Patent application number | Description | Published |
20130022145 | DECIDING THE ORDER OF SIC DETECTION BY ADJUSTING MCS - Method, receiver and computer program product for processing a signal, wherein the signal is received over a wireless network from a transmitter, the signal comprising a plurality of data streams. A selected one of the data streams is preferentially treated by reporting an adjusted value of a characteristic of the selected data stream to the transmitter and the received signal is decoded using a technique of successively decoding data streams in which the selected data stream is the first data stream to be decoded, a signal corresponding to the selected data stream being removed from the received signal prior to decoding at least one of the unselected data streams in the received signal. | 01-24-2013 |
20130039349 | Methods of Channel State Information Feedback and Transmission in Coordinated Multi-Point Wireless Communications System - An apparatus and method for feedback solutions that function in conjunction with CoMP transmissions. The feedback solutions are applicable to joint transmission (JT) as well as coordinated scheduling (CS) and coordinated beamforming (CB). Embodiments of the present disclosure are described herein in the context of a wireless network in compliance with LTE standards. | 02-14-2013 |
20130083681 | Methods of Channel State Information Feedback and Transmission in Coordinated Multi-Point Wireless Communications System - A method of operating an eNB in a wireless communication network is provided, wherein the eNB is configured for coordinated multipoint (CoMP) transmission. The method comprises determining, by the eNB, whether to use a fall back transmission scheme for communicating with a UE in the network, wherein the fall back transmission scheme is different from a regular transmission scheme. The method further comprises transmitting, by the eNB, data using the fall back transmission scheme in one or more selected subframes and/or on selected frequency resources. | 04-04-2013 |
20130089040 | Interference Management in a Wireless Network - A method for interference management at a network element within a wireless telecommunications network, and the network element and user equipment, the method coordinating transmission of cell specific resource elements with at least one other network element; and transmitting the cell specific resource element to a user equipment concurrent to a resource element transmission from the at least one other network element. Also a method for interference avoidance at a network element operating within a wireless telecommunications network, and the user equipment and network element, the method receiving interference information from a user equipment; providing the interference information to at least one interfering network element; and precoding transmissions to the use equipment for interference cancellation. | 04-11-2013 |
20130114434 | APPARATUS AND METHOD FOR ADAPTIVE TRANSMISSION DURING ALMOST BLANK SUBFRAMES IN A WIRELESS COMMUNICATION NETWORK - A system and method for communication in a wireless communication network are disclosed. One embodiment of the system includes an overlay access node that supports Almost Blank Subframes (ABSs). The overlay access node, such as macro eNB, can receive measurement results from one or more user equipments, including macro user equipments (UEs) and/or pico (UEs), either directly or via an underlay access node, such as a pico eNB. The macro eNB can determine a set of macro UEs that are sufficiently close to the macro eNB for transmission during ABSs with a low transmission power or beamforming without significant interference to the pico UEs. This scheme improves the throughput of transmission between the macro eNB and macro UEs while reducing interference to the pico UEs. | 05-09-2013 |
20130121258 | METHOD AND SYSTEM FOR REQUESTING A SERVICE UTILIZING A SEQUENCE OF CODES - A method and a signaling entity, for sending a signal to a signaled entity, the method determining, at the signaling entity, at least a first code of a sequence of codes comprising the signal and an assignation of resources for transmission of at least the first code of the sequence of codes, wherein the first code is selected from a set of first codes; transmitting, utilizing at least the first code of the sequence of codes and the assignation, the signal, wherein at least the first code of the sequence of codes is shared among a plurality of signaling entities; and sending, utilizing subsequent codes of the sequence of codes, the signal. | 05-16-2013 |
20130121259 | METHOD AND SYSTEM FOR REQUESTING A SERVICE UTILIZING A SEQUENCE OF CODES - A method, at a signaling entity, for sending a signal to a signaled entity, the method determining, at the signaling entity, at least a first code of a sequence of codes comprising the signal; receiving, at the signaling entity, an assignation of resources from the signaled entity for transmission of at least the first code of the sequence of codes; transmitting, utilizing at least the first code of the sequence of codes and the assignation, the signal, wherein at least the first code of the sequence of codes is shared among a plurality of signaling entities; and sending, utilizing subsequent codes of the sequence of codes, the signal, wherein the sequence of codes is unique to the signal. | 05-16-2013 |
20130223360 | FOURIER TRANSFORM FOR A SIGNAL TO BE TRANSMITTED ON A RANDOM ACCESS CHANNEL - Method and apparatus for processing a signal using a recursive method for determining a plurality of frequency components of the signal, the signal being a chirp-like polyphase sequence, wherein a first frequency component of the plurality of frequency components is determined; a component factor is determined by accessing a factor table for use in determining a second frequency component of the plurality of frequency components; and the second frequency component is determined using the determined first frequency component and the determined component factor. | 08-29-2013 |
20130223502 | RANK SIGNALING IN SPATIAL MULTIPLEXING - Method, receiver and computer program product for processing a signal transmitted over a wireless network from a plurality of spatially separated transmit antennas of a transmitter using a Multiple-Input Multiple-Output transmission. The signal is received at a plurality of receive antennas, the signal comprising a plurality of data streams. The channel quality for each of the data streams in the received signal is determined and based on the determined channel quality of the data streams, the number of independent data streams that can be supported in the Multiple-Input Multiple-Output transmission of the signal is determined. An indication of the determined number is transmitted to the transmitter. | 08-29-2013 |
20130235916 | DECODING A SIGNAL - Method, receiver and computer program product for processing a signal transmitted from a plurality of spatially separated transmit antennas using a Multiple-Input Multiple-Output transmission over a wireless network. The signal is received at a plurality of spatially separated receive antennas, the signal comprising a plurality of data streams and the quality/reliability of each of the data streams in the received signal is determined. Based on the determined quality/reliability of the data streams, a decoding technique is selected to be one of (i) a successive decoding technique for successively decoding data streams in which one of the data streams is decoded and a signal corresponding to said one of the data streams is removed from the received signal prior to decoding further data streams in the received signal, and (ii) a non-successive decoding technique in which each data stream is decoded from the received signal by treating the other data streams as noise in the received signal. The received signal is then decoded using the selected decoding technique. | 09-12-2013 |
20140016451 | PHASE-ROTATED REFERENCE SIGNALS FOR MULTIPLE ANTENNAS - Systems, methods, and apparatuses for phase-rotated reference signals are provided. In accordance with one implementation, phase-rotated reference signals are transmitted from multiple transmit antennas on the same reference signal (RS) resource elements. The receiver may determine channel coefficients for links corresponding to the multiple antennas, based on the received signals at the RS resource elements. Time-domain filtering or frequency-domain orthogonal codes may be used to determine the channel coefficients for links corresponding to the multiple antennas. The phase-rotation information may be broadcasted in a system information block (SIB) message or signaled in a radio resource control (RRC) message. | 01-16-2014 |
20140016681 | PHASE-ROTATED REFERENCE SIGNALS FOR MULTIPLE ANTENNAS - Systems, methods, and apparatuses for phase-rotated reference signals are provided. In accordance with one implementation, phase-rotated reference signals are transmitted from multiple transmit antennas on the same reference signal (RS) resource elements. The receiver may determine channel coefficients for links corresponding to the multiple antennas, based on the received signals at the RS resource elements. Time-domain filtering or frequency-domain orthogonal codes may be used to determine the channel coefficients for links corresponding to the multiple antennas. The phase-rotation information may be broadcasted in a system information block (SIB) message or signaled in a radio resource control (RRC) message. | 01-16-2014 |
20150016295 | Methods of Channel State Information Feedback and Transmission in Coordinated Multi-Point Wireless Communications System - A method of operating an eNB in a wireless communication network is provided, wherein the eNB is configured for coordinated multipoint (CoMP) transmission. The method comprises determining, by the eNB, whether to use a fall back transmission scheme for communicating with a UE in the network, wherein the fall back transmission scheme is different from a regular transmission scheme. The method further comprises transmitting, by the eNB, data using the fall back transmission scheme in one or more selected subframes and/or on selected frequency resources. | 01-15-2015 |
20150271853 | FOURIER TRANSFORM FOR A SIGNAL TO BE TRANSMITTED ON A RANDOM ACCESS CHANNEL - Provided is a recursive method and apparatus for processing a signal for determining a plurality of frequency components of the signal, the signal being a chirp-like polyphase sequence. In one embodiment, the method includes: (1) determining a first frequency component of the plurality of frequency components, (2) determining a component factor by accessing a factor table, (3) determining the second frequency component using the determined first frequency component and the determined component factor. If there is at least one further frequency component of the signal, the method further comprising for each of the further frequency components: (4) determining a respective further component factor by accessing the factor table, and (5) determining the further frequency component using a previously determined frequency component and the determined further component factor, wherein the previously determined frequency component is the frequency component determined most recently prior to determining each respective further frequency component. | 09-24-2015 |
Patent application number | Description | Published |
20130250785 | Adaptive Partial Packet Decoding - A user device receives packets from a base station. The user device may invoke decoding while the packet is still being received, based on the incomplete contents of a given packet. This “partial packet decoding” relies on the fact that the underlying information in the packet is encoded with redundancy (code rate less than one). If link quality is poor, the partial packet decoding is likely to be unsuccessful, i.e., to fail in its attempt to recover the underlying information. To avoid waste of power, the user device may be configured to apply one or more tests of link quality prior to invoking the partial packet decoding on a current packet. | 09-26-2013 |
20130260758 | APPARATUS AND METHODS FOR SYNCHRONIZATION RECOVERY IN A HYBRID NETWORK - Methods and apparatus for synchronizing operational state during hybrid network operation. In one embodiment, the various access technologies that makeup the hybrid network not fully synchronized. Thus, a wireless device operating in a mixed mode must be capable of managing synchronization across multiple access technologies. The wireless device is configured to estimate an expected “tune-away” period when disengaging with a one access technology to address events (for example, link maintenance, calls, data, and the like) or perform monitoring on a second access technology. The estimate is then used by the device to adjust its operational parameters on the technology from which it is tuning away. This ensures smooth switching away from and back to the various network technologies. | 10-03-2013 |
20130267267 | Assisted Management of Radio Resources across Dual Networks - A user equipment (UE) operating in a communication system comprising a base station and one or more UEs. The UE may be configured to operate on or “camp” on two different networks with one radio. In this exemplary system, the radio may be normally connected to the first network (NW | 10-10-2013 |
20130272212 | METHOD FOR IMPLEMENTING AUTONOMOUS MANAGEMENT OF RADIO RESOURCES ACROSS DUAL NETWORKS - Managing radio resources across dual networks includes a wireless mobile device connecting to a first wireless network using a first radio access technology. The wireless device may notify the first network of a capability to be temporarily non-responsive to the first network while maintaining a signaling connection to the first network. The wireless device may communicate with a second network. The wireless device may return to communicating with the first network subsequent to communicating with the second network, and in response to communicating with the second network for less than a predetermined amount of time, the wireless device may send a scheduling request to the first network. In response to receiving a grant acknowledgement from the first network, the wireless device may send a buffer status report that includes a value such as zero to indicate that the wireless device has returned to and can communicate with the first network. | 10-17-2013 |
20130310057 | Fast Communication Recovery in Dual Network Radio Resource Management - Various embodiments are disclosed of a method and apparatus for fast communication recovery in wireless mobile devices arranged to perform dual network radio resource management. In one embodiment, a wireless mobile device includes a transceiver configured to communicate with each of first and second networks. After establishing and maintaining a link with the first network, the wireless mobile device may tune a transceiver to the second network to monitor for traffic, subsequently tuning back to the first network. After turning the transceiver back to the first network, the wireless mobile device may perform one or more attempts to restore the link to the first network. The number of attempts to restore the link is dependent upon an amount of time the transceiver is tuned to the second network. | 11-21-2013 |
20130310091 | Outer Loop Link Adaptation for Device Resumption - Outer loop link adaptation for device resumption. A user equipment (UE) and base station (BS) may be in communication in a first network (e.g., an LTE network). Communication between the UE and the BS may be interrupted, e.g., due to a long fading environment, the UE tuning away to a second network (e.g., a CDMA network). Accordingly, the measured error rate may increase dramatically. After resumption from the interruption, a negative offset may be applied to a reported SINR value from the UE due to the previous increase in error rate. Upon improvement in the error rate, a larger, positive offset adjustment may be added to the negative offset, allowing the estimated SINR to return to reported SINR more quickly. Additionally, the error rate estimation may be adjusted to converge to a more recently measured more quickly by decreasing a feedback filter coefficient. | 11-21-2013 |
20130310092 | Outer Loop Link Adaptation for Device Resumption - Outer loop link adaptation for device resumption. A user equipment (UE) and base station (BS) may be in communication in a first network (e.g., an LTE network). Communication between the UE and the BS may be interrupted, e.g., due to a long fading environment, the UE tuning away to a second network (e.g., a CDMA network). Accordingly, the measured error rate may increase dramatically. After resumption from the interruption, a negative offset may be applied to a reported SINR value from the UE due to the previous increase in error rate. Upon improvement in the error rate, a larger, positive offset adjustment may be added to the negative offset, allowing the estimated SINR to return to reported SINR more quickly. Additionally, the error rate estimation may be adjusted to converge to a more recently measured more quickly by decreasing a feedback filter coefficient. | 11-21-2013 |
20130315119 | TUNE BACK COORDINATION WITH CONNECTED MODE DISCONTINUOUS RECEIVE - A method is disclosed for coordinating a user equipment's communication with a network during tune back with C-DRX (connected mode discontinuous receive). When a user equipment tunes back to a network after a tune away or a signal fade, a scheduling request is sent to the network to indicate the tune back as quickly as possible. The user equipment waits for a downlink transmission from the network. When the user equipment does not receive the downlink transmission, the method determines if the connection between the user equipment and the network has been released. The sending of the first scheduling request and any additional scheduling requests is coordinated with the C-DRX configuration so as to maximize the battery savings of C-DRX and minimize the latency of the tune back process in case the user equipment has uplink data to send. | 11-28-2013 |
20130324145 | LINK ADAPTATION RESUMPTION BASED ON CQI OFFSET - Methods, apparatuses and computer readable media are described that adjust signaling messages that include channel quality metrics communicated between a mobile wireless device and a wireless access network before and/or after interruption of a connection to improve downlink performance after resumption of the connection. One or more adjusted channel quality metrics are determined and communicated to the wireless access network to compensate at least in part for an estimate of communication channel performance degradation by a network element of the wireless access network following the interruption and resumption of the connection between the mobile wireless device and the wireless access network. | 12-05-2013 |
20130329586 | IMPROVING RECEPTION BY A WIRELESS COMMUNICATION DEVICE - A method for improving reception by a wireless communication device is provided. The method can include a wireless communication device using a first RF chain to support a connection to a network via a first frequency band. The method can further include the wireless communication device tuning a second RF chain, which is not being actively used for carrier aggregation, to a second frequency band. The method can additionally include the wireless communication device measuring, via the second RF chain, a signal characteristic of the second frequency band. The method can also include the wireless communication device adjusting a configuration of the first RF chain based at least in part on the measured signal characteristic. | 12-12-2013 |
20130331077 | RF CHAIN MANAGEMENT IN A CARRIER AGGREGATION CAPABLE WIRELESS COMMUNICATION DEVICE - A method for managing radio frequency (RF) chains in a carrier aggregation capable wireless communication device is provided. The method can include a wireless communication device using a first RF chain associated with a first component carrier and a second RF chain associated with a second component carrier to support a connection to a network. The method can further include the wireless communication device formatting a deactivation message configured to trigger deactivation of the second component carrier. The method can additionally include the wireless communication device sending the deactivation message to the network to trigger deactivation of the second component carrier. The method can also include the wireless communication device discontinuing usage of the second RF chain to support the connection to the network via the second component carrier after sending the deactivation message. | 12-12-2013 |
20140003260 | Modulation and Coding Scheme (MCS) Recovery based on CQI Offset | 01-02-2014 |
20140016490 | MISSED RANK REPORT IN DUAL NETWORK RADIO RESOURCE MANAGEMENT - A method for handling a missed rank report during a tune-away period is provided. The method can include a wireless communication device tuning away from a first network to a second network for a tune-away period; returning to the first network from the tune-away period; determining that a scheduled rank report was missed during the tune-away period; generating a Channel State Indicator (CSI) report based on a previously defined Rank Indicator (RI) value known to the first network in response to missing the scheduled rank report; and sending the CSI report to the first network. | 01-16-2014 |
20140098693 | TRIGGERING CELL TRANSITION IN AN UPLINK POWER LIMITED CONDITION - A method for triggering cell transition in an uplink power limited condition is disclosed. The method can include a wireless communication device determining that the wireless communication device is experiencing an uplink power limited condition; deriving a modified downlink channel quality measurement by adjusting a measured downlink channel quality to indicate a lower downlink channel quality than the measured downlink channel quality; generating a measurement report including the modified downlink channel quality measurement; and sending the measurement report to the serving cell to trigger transition of the wireless communication device from the serving cell to a second cell. | 04-10-2014 |
20140098694 | DYNAMIC RECEIVE DIVERSITY SELECTION FOR LTE - Methods, apparatuses and computer readable media are described that configure wireless circuitry in a wireless communication device. The wireless communication device establishes a connection to a wireless network using wireless circuitry that includes a first radio frequency receive signal chain and a second radio frequency receive signal chain. The wireless communication device monitors uplink and downlink traffic activity communicated between the wireless communication device and the wireless network and measures downlink radio frequency receive signal conditions at the wireless communication device. The wireless communication device reconfigures the wireless circuitry to enable receive diversity or to disable receive diversity at the wireless communication device based on the monitored traffic activity and the measured downlink radio frequency receive signal conditions. | 04-10-2014 |
20140112172 | Load Estimation in 3GPP Networks - Loading estimation of 3GPP networks. One or more metrics relating to a cell of a 3GPP network may be measured. Loading of the cell may be estimated based on the one or more metrics. The metrics may include metrics measured, estimated, or derived at multiple layers, possibly including one or more of physical layer, radio link control layer, radio resource control layer, or application layer metrics. | 04-24-2014 |
20140113630 | Wireless Device Based Inter Radio Access Technology Handover Initiation - User Equipment (UE) based forced inter radio access technology (iRAT) handover. A connection to a network may be established via a first cell operating according to a first radio access technology (RAT). It may be determined to initiate a handover of the UE from the first cell to a second cell operating according to a second RAT. An indication may be transmitted to the network to initiate a handover of the UE from the first cell to the second cell. An indication may be received from the network to perform handover of the UE from the first cell to the second cell in response to the indication to initiate the handover. Handover of the UE from the first cell to the second cell may be performed in response to the indication to perform the handover. Handover may include releasing the connection to the network via the first cell and establishing a connection to the network via the second cell. | 04-24-2014 |
20140126544 | NETWORK CELL TRANSITIONS FOR VOLTE DEVICES AT CALL INITIATION - Apparatus and methods of performing a network cell transition for a voice over long term evolution (VoLTE) capable mobile device. Initially, the mobile device can detect a call initiation event. Thereafter, the mobile device determines whether a radio signal power associated with its serving LTE network base station is less than a radio access technology (RAT) specific threshold (i.e., an LTE-specific threshold). In a scenario where the radio signal power is less than the RAT-specific threshold the mobile device can effectuate a transition to an available neighbor network base station employing a legacy RAT, prior to establishing a voice call. When the mobile device is in a radio resource control (RRC) connected mode the network cell transition may be associated with an induced network handover procedure. Alternatively, when the mobile device is in an RRC idle mode the network cell transition may be associated with network reselection procedure. | 05-08-2014 |
20140128074 | CELL LOADING-BASED CELL TRANSITION - A method for making a cell transition decision based on cell loading is provided. The method can include a wireless communication device receiving a message sent by a base station associated with a serving cell for the wireless communication device. The message can include loading information indicative of a loading factor for each of at least one neighbor cell. The method can further include the wireless communication device reading at least a portion of the loading information from the message; and selecting a target cell for transition from the at least one neighbor cell based on the read loading information. | 05-08-2014 |
20140200002 | REDUCING POWER CONSUMPTION THROUGH REDUCED MEASUREMENT FREQUENCY - A method for reducing power consumption by a wireless communication device is disclosed. The method can include the wireless communication device performing a first measurement of an alternative cell during a first measurement gap; sending a first measurement report generated based on the first measurement to the serving cell; storing the first measurement report; determining a mobility state of the wireless communication device; comparing the mobility state to a mobility threshold criterion; resending the first measurement report to the serving network as a report for a second measurement gap in an instance in which the mobility state satisfies the mobility criterion; and performing a second measurement of the alternative cell during the second measurement gap and sending a second measurement report generated based on the second measurement to the serving cell in an instance in which the mobility state does not satisfy the mobility threshold criterion. | 07-17-2014 |
20140241243 | REDUNDANT TRANSMISSION OF REAL TIME DATA - A method for redundant transmission of real time data is provided. The method can include an edge node in a wireless network sending a first RTP packet including a first real time data frame to a second edge node. The method can further include the edge node determining that a radio link condition is sufficient to support redundant transmission of real time data to the second edge node. The method can additionally include the edge node, in response to determining that the radio link condition is sufficient to support redundant transmission of real time data, bundling the first real time data frame with a next sequential real time data frame that has not been previously sent to the second edge node in a second RTP packet at a PDCP layer of the edge node; and sending the second RTP packet to the second edge node. | 08-28-2014 |
20140269373 | ADAPTIVE USE OF RECEIVER DIVERSITY - A method for adaptively disabling receiver diversity is provided. The method can include a wireless communication device determining an active data traffic pattern; defining a threshold channel quality metric based at least in part on a threshold channel quality needed to support a threshold quality of service for the active data traffic pattern; comparing a measured channel quality to the threshold channel quality metric; and disabling receiver diversity in an instance in which the measured channel quality metric satisfies the threshold channel quality metric. | 09-18-2014 |
20140269624 | VOICE CALL RESUMPTION ON A LEGACY NETWORK - A method for resuming a voice call on a legacy network is provided. The method can include a wireless communication device establishing a voice call with a remote device over a first cellular network; determining that a connection quality of the first cellular network has dropped below a threshold connection quality; sending a notification that the wireless communication device is releasing the voice call to transition to a legacy cellular network and will resume the voice call on the legacy cellular network; releasing the voice call on the first cellular network; transitioning to the legacy cellular network; establishing a second voice call with the remote device on the legacy cellular network; and using the second voice call to resume the voice call with the remote device. | 09-18-2014 |
20140369226 | Adaptive Partial Packet Decoding - A user device receives packets from a base station. The user device may invoke decoding while the packet is still being received, based on the incomplete contents of a given packet. This “partial packet decoding” relies on the fact that the underlying information in the packet is encoded with redundancy (code rate less than one). If link quality is poor, the partial packet decoding is likely to be unsuccessful, i.e., to fail in its attempt to recover the underlying information. To avoid waste of power, the user device may be configured to apply one or more tests of link quality prior to invoking the partial packet decoding on a current packet. | 12-18-2014 |
20150085685 | Application Dependent Channel Condition Assessment - This disclosure relates to application dependent channel condition assessment mode selection for reduced power consumption in cellular communications. In one embodiment, a channel condition assessment mode may be selected for assessing a wireless communication channel used for a cellular link. The channel condition assessment mode may be selected from at least two channel condition assessment modes, and may be selected at least in part based on application characteristics of an application using the cellular link. Channel condition assessment may be performed according to the selected channel condition assessment mode. Channel condition assessment results obtained from the channel condition assessment may be transmitted to a cellular base station via the cellular link. | 03-26-2015 |
20150085728 | Uplink and Downlink Semi-Persistent Scheduling Alignment - This disclosure relates to aligning semi-persistent scheduling (SPS) uplink and downlink communications. In one embodiment, a cellular base station may select SPS parameters for a wireless device. The SPS parameters may include a subframe offset, a downlink SPS interval, and an uplink SPS interval. The subframe offset may indicate a subframe at which both an initial downlink subframe and an initial uplink subframe are scheduled. An indication of the SPS parameters may be transmitted to the UE. The wireless device and the cellular base station may perform uplink and downlink communication according to the SPS parameters. | 03-26-2015 |
20150085729 | Transport Block Size and Channel Condition Assessment Based Power Consumption Reduction for Cellular Communication - This disclosure relates to reducing power consumption for cellular communication based on transport block size in combination with channel condition measurements for applications with certain application characteristics. In one embodiment, a transport block size for use for uplink communication with a base station by a wireless device may be selected. The transport block size may provide more robust communication characteristics than required for current channel conditions. The transport block size may be selected based on application characteristics of an application performing the uplink communication. A transmit power for the wireless device to use for the uplink communication may be selected based on the transport block size providing more robust communication characteristics than required for the current channel conditions. In particular, transport power selection may be biased towards a reduced transmit power based on the transport block size providing more robust communication characteristics than required for the current channel conditions. | 03-26-2015 |
20150087351 | Power Consumption Optimization for Cellular Communication via Power Amplifier Biasing - This disclosure relates to optimizing power consumption for cellular communication based on transport block size in combination with channel condition measurements via power amplifier biasing. According to one embodiment, an indication of a transport block size to be used for uplink communication with a base station may be received. It may be determined that the transport block size provides more robust communication characteristics than required for current channel conditions. A power amplifier (PA) bias current for uplink communication with the cellular base station may be selected based at least in part on determining that the transport block size provides more robust communication characteristics than required for the current channel conditions. In particular, PA bias current selection may be biased to reduce power consumption at a cost of greater non-linearity based on the transport block size providing more robust communication characteristics than required for the current channel conditions. | 03-26-2015 |
20150092575 | DEVICE-INITIATED CODEC RATE CHANGE DURING A VOICE CALL - A method for initiating a codec rate change during a VoIP call by a wireless communication device is disclosed. The method can include the wireless communication device establishing a first codec rate for use in the VoIP call during a call establishment phase; using the first codec rate to encode voice data for transmission during a first portion of the VoIP call; determining a channel quality while using the first codec rate; determining that the channel quality satisfies a threshold for requesting a codec rate change; requesting a codec rate change from the first codec rate to a second codec rate in response to the channel quality satisfying the threshold; and using the second codec rate to encode voice data for transmission during a second portion of the VoIP call. | 04-02-2015 |
20150092708 | ADAPTIVE RECEPTION OF LTE IN A SINGLE RADIO WIRELESS DEVICE - Methods, apparatuses and computer-readable media are described that configure wireless circuitry of a wireless device. The wireless device establishes a connection to a first wireless network using first and second receiving signaling chains. The wireless device obtains a configuration processing delay time for the first wireless network and sends a first channel status report having a rank indicator value of one before starting a tune-away event at a time based on the obtained configuration processing delay time. The wireless device reconfigures at least one of the radio frequency signaling chains to receive signals from a second wireless network during the tune-away event. The wireless device subsequently sends a second channel status report having a rank indicator value greater than one before ending the tune-away event and reconfiguring the at least one of the radio frequency receive signaling chains back to the first wireless network. | 04-02-2015 |
20150098342 | Modulation and Coding Scheme (MCS) Recovery based on CQI Offset - Manipulating modulation and coding scheme (MCS) allocation after a communication interruption. A UE device may resume communications with a BS after a communication interruption. Channel quality information may be generated and transmitted to the BS. The channel quality information may be based on channel quality measurements, and may also be based on an offset configured manipulate an MCS allocation by the BS based on determining that the interruption to communication between the UE and the BS has occurred. | 04-09-2015 |
20150124671 | SHORTENED HARQ TIMELINES FOR LOW BANDWIDTH APPLICATIONS - Apparatus and methods for performing reduced hybrid automatic repeat request (HARQ) operations for a user equipment (UE) during a data communications session, e.g., for voice over LTE (VoLTE) communications. The UE can initially inform the network, via an enhanced NodeB (eNodeB), that the UE is capable of performing advanced HARQ functions. The eNodeB can further evaluate various network conditions to determine when reduced HARQ operations should be employed. When network conditions allow, the eNodeB can transmit an RRC message to the UE, including reduced HARQ timeline configuration information. Thereafter, the UE and the eNodeB can collaborate to institute the reduced HARQ timeline to schedule an application data retransmission during the data communications session. The reduced HARQ operations can be performed in conjunction with various semi-persistent scheduling (SPS) and connected mode discontinuous reception (C-DRX) operations, to further conserve UE device resources. | 05-07-2015 |
20150156636 | Carrier Aggregation Using Unlicensed Frequency Bands - Carrier aggregation using unlicensed frequency bands. A primary carrier for communication between a base station (BS) and a wireless user equipment (UE) device may be configured according to a first wireless communication technology. The primary carrier may be on a licensed frequency band. A secondary carrier for communication between the BS and the UE may also be configured according to a first wireless communication technology. The secondary carrier may be on an unlicensed frequency band. Channel conditions for each of multiple possible channels of the unlicensed frequency band may be assessed according to a second wireless communication technology as part of configuring the secondary carrier. | 06-04-2015 |
20150156693 | Device to Device Communications with Carrier Aggregation - Device-to-device (D2D) communications in conjunction with carrier aggregation. A base station (BS) may coordinate D2D communication between two wireless user equipment (UE) devices. A primary cell may be configured for communicating with each of the UEs. A secondary cell may be configured for D2D communication between the two UEs. The primary cell and the secondary cell may utilize different component carriers. Additionally, cross-carrier scheduling may be used, such that at least some control information for the secondary cell is communicated via the primary cell. | 06-04-2015 |
20150180619 | TTI Bundling for Downlink Communication - This disclosure relates to TTI bundling for downlink communication. According to one embodiment, a base station and a wireless device may establish a wireless communication link. The base station may determine to enable TTI bundling for downlink communication for at least one carrier of the wireless communication link. The base station may provide an indication to the wireless device to enable TTI bundling for downlink communication for the determined carrier(s) of the wireless communication link. The base station may subsequently transmit TTI bundle downlink communications to the wireless device via the determined carrier(s). | 06-25-2015 |
20150181514 | Virtual WLAN Interface for Cellular Data Offloading in a Wireless Device - This disclosure relates to use of WLAN virtual interfaces. According to one embodiment, a wireless device may be capable of using a WLAN chipset for user initiated WLAN communication and for cellular offloading WLAN communication. A separate WLAN virtual interface may be established for each type of WLAN communication, including a first WLAN virtual interface between the WLAN chipset and a WLAN connectivity manager executing on an application processor of the wireless device and a second WLAN virtual interface between the WLAN chipset and a cellular connectivity manager executing on the application processor. The virtual interfaces may each use a different IP address, and may either multiplex data onto a shared RF chain in a time-sharing manner or each be provided with their own RF chain to perform WLAN communication. | 06-25-2015 |
20150181638 | Radio Link Control Duplication for Carrier Aggregation - This disclosure relates to carrier aggregation using separate RLC entities for different component carriers. According to one embodiment, a base station and a wireless device may establish a primary component carrier and at least one secondary component carrier according to a first radio access technology. Separate radio link control entities may be established for the primary component carrier and the secondary component carrier. Data communicated between the base station and the wireless device may be routed by way of the primary component or the secondary component carrier based on differing characteristics of the component carriers, and the RLC entities may treat downlink data differently on the primary component carrier and the secondary component carrier based on the differing characteristics of the component carriers. | 06-25-2015 |
20150195737 | Cell Utilization Estimation by a Wireless Device - Estimating loading and potential available throughput a serving cell of a wireless user equipment (UE) device. Physical layer metrics of a channel on which the UE communicates with the serving cell may be measured. Cell utilization of the serving cell may be calculated based at least in part on the measured physical layer metrics. A maximum available throughput of the serving cell may be calculated based on the cell utilization. | 07-09-2015 |
20150222414 | Reference Subframes for Synchronization and Cell Measurements - This disclosure relates to using a dedicated reference subframes in a cellular communication system. According to one embodiment, a base station may transmit reference signals in a dedicated synchronization and measurement reference subframe. Neighboring base stations may also transmit reference signals in dedicated reference subframes in a temporally coordinated (synchronized) manner. The reference signals transmitted be each base station may be orthogonal with the reference signals transmitted by each neighboring base station. The reference subframes may be transmitted periodically, and data subframes may be transmitted between reference subframes. Some or all of the data subframes may not include cell-specific reference symbols, as their function may be unnecessary given the use of the dedicated reference subframes. | 08-06-2015 |
20150223244 | Wi-Fi Signaling by Cellular Devices for Coexistence in Unlicensed Frequency Bands - This disclosure relates to Wi-Fi signaling in conjunction with cellular communication in unlicensed frequency bands for efficient co-existence. According to one embodiment, a cell may be established between a cellular base station and a wireless user equipment device on a frequency channel in an unlicensed frequency band. A cellular communication may be scheduled between the base station and the user equipment device. A Wi-Fi signal may be transmitted on the frequency channel in conjunction with the scheduled cellular communication. The Wi-Fi signal may indicate a length of the scheduled cellular communication using Wi-Fi signaling. The scheduled cellular communication may be performed via the cell. | 08-06-2015 |
20150230206 | DYNAMIC ANTENNA TUNER SETTING FOR CARRIER AGGREGATION SCENARIOS - Apparatus and methods for dynamically adjusting radio frequency circuitry in a wireless communication device are disclosed. The wireless communication device can receive downlink communication using carrier aggregation through a primary component carrier and a secondary component carrier. When carrier aggregation is not enabled, the wireless communication device adjusts the radio frequency circuitry based on default values. When carrier aggregation is enabled, the wireless communication device evaluates radio frequency conditions for the primary and secondary component carriers and adjusts the radio frequency circuitry based on whether uplink and/or downlink communication is power constrained. When uplink communication is power constrained, the wireless communication device adjusts the radio frequency circuitry for optimal performance via the primary component carrier, and when uplink communication is not power constrained, the wireless communication device adjusts the radio frequency circuitry for optimal performance via the combination of the primary and secondary component carriers used for carrier aggregation. | 08-13-2015 |
20150256303 | UPLINK TRANSMISSION ON UNLICENSED RADIO FREQUENCY BAND COMPONENT CARRIERS - Methods and apparatus for using an unlicensed radio frequency band component carrier for uplink transmission are disclosed. A wireless communication device receives a carrier aggregation configuration, which can include at least one licensed radio frequency band component carrier and at least one unlicensed radio frequency band component carrier. The wireless communication device establishes a set of radio bearers and associates an unlicensed radio frequency band permission level with each of the radio bearers. The wireless communication device multiplexes uplink traffic for the radio bearers on the at least one licensed radio frequency band component carrier and the at least one unlicensed radio frequency band component carrier based at least in part on the unlicensed radio frequency band permission levels associated with the radio bearers. | 09-10-2015 |
20150288475 | Cell Measurements in Unlicensed Frequency Bands - This disclosure relates to performing cell measurements in unlicensed frequency bands and/or in channels with interference. According to some embodiments, a wireless user equipment (UE) device may define a reference symbol vector for a cell. Each respective element of the reference symbol vector may correspond to a respective subcarrier of the cell that carries a respective reference symbol. The UE may perform channel estimation at each respective element of the reference symbol vector. The UE may estimate the cell strength of the cell by cross-correlating channel estimates of different elements of the reference symbol vector. | 10-08-2015 |
20150288809 | OAM System for LTE-U and Wi-Fi Operation and Coexistence Deployment - This disclosure relates to operation and management of cellular communication systems including cells and access points operating in unlicensed frequency bands. According to some embodiments, a base station in a network may receive operation and management policy information, including information for configuring network elements operating in unlicensed frequency bands. The policy information may include information for coordinating network elements operating in unlicensed frequency bands in a manner configured to reduce interference in the unlicensed frequency bands. The base station may provide configuration information to one or more network elements in the network operating in unlicensed frequency bands. The configured network elements may operate in the unlicensed frequency bands in accordance with the configuration information. | 10-08-2015 |
20150304883 | Deterministic RRC Connections - This disclosure relates to techniques for scheduling radio resource control connections between a wireless device and a network element of a network in advance. According to some embodiments, a wireless device may provide an indication of one or more types of upcoming data traffic to the network element. The network element may schedule one or more radio resource control connections for the wireless device based at least in part on the indication of one or more types of upcoming data traffic. The network element may provide an indication of the scheduled radio resource control connection(s) to the wireless device. The wireless device and the network may establish the scheduled radio resource control connection at the scheduled time. | 10-22-2015 |
20150304955 | Deterministic RRC Connections - This disclosure relates to techniques for scheduling radio resource control connections between a wireless device and a network element of a network in advance. According to some embodiments, a wireless device may provide an indication of one or more types of upcoming data traffic to the network element. The network element may schedule one or more radio resource control connections for the wireless device based at least in part on the indication of one or more types of upcoming data traffic. The network element may provide an indication of the scheduled radio resource control connection(s) to the wireless device. The wireless device and the network may establish the scheduled radio resource control connection at the scheduled time. | 10-22-2015 |
20150305056 | Deterministic RRC Connections - This disclosure relates to techniques for scheduling radio resource control connections between a wireless device and a network element of a network in advance. According to some embodiments, a wireless device may provide an indication of one or more types of upcoming data traffic to the network element. The network element may schedule one or more radio resource control connections for the wireless device based at least in part on the indication of one or more types of upcoming data traffic. The network element may provide an indication of the scheduled radio resource control connection(s) to the wireless device. The wireless device and the network may establish the scheduled radio resource control connection at the scheduled time. | 10-22-2015 |
20150326378 | Spectrum Enhancement and User Equipment Coexistence through Uplink/Downlink Decoupling for Time Division Duplexing and through Non-Continuous Frame Structures for Frequency Division Duplexing - Mobile devices, base stations, and/or relay stations may implement methods for decreasing required guard bands while also minimizing Adjacent Channel Leakage Ratio, when multiple mobile devices communicate over different respective adjacent specified frequency bands. For communications over at least one specified frequency band of the different respective adjacent frequency bands, a first bandwidth of uplink communications and/or a second bandwidth of downlink communications may be adjusted to differ from each other, and/or a communications bandwidth within the specified frequency band may be adjusted to be of a first size during a first portion of a specified data transmission period and to be of a second size during a second portion of the specified data transmission period, when at least some of the communications over the specified frequency band take place at frequencies adjacent to frequencies at which at least some of the communications take place over another specified frequency band. | 11-12-2015 |
20150358047 | Intermodulation Cancellation of Third-order Distortion in an FDD Receiver - A transceiver device may include a transmit path that generates a modulated transmit signal based on a baseband signal, and a receive path that receives a receive signal, which is subject to third-order order distortion caused by intermodulation noise resulting from a continuous wave blocker intermodulating with transmit leakage from the transmit path. The transceiver may also include a compensation path that models portions of the transmit path and the receive path, and generates a replica signal representative of the third-order order distortion according to at least a specified function and the modeled portions of the transmit path and the receive path. The compensation path also filters the replica signal and subtracts the filtered replica signal from the receive signal to eliminate the third-order order distortion caused by the intermodulation noise. The filtering of the replica signal may be performed by programmable finite impulse response filters. | 12-10-2015 |
20150365198 | Enhanced LTE UL HARQ Feedback Indication for Power Saving and Range Improvement - Mobile devices, base stations, and/or relay stations may implement a method for an improved and reliable automatic repeat request feedback indication. A mobile device (UE) may establish communication within a wireless network, and indicate to the network that the UE is a special type device, e.g. a constrained device. The network (base station) may then not send an indication on a physical indicator channel to the UE when certain conditions are met, and instead, the mobile device may interpret control information received from the network on a physical control channel as a negative acknowledgment indication corresponding to an automatic repeat request from the network. The UE may then perform a retransmission according to the interpreted control information. A new control information format may be used to further define how the network and UE implement the automatic repeat request process, to reduce the total number of bits required in the control information. | 12-17-2015 |
20150365930 | Decoding of PCFICH in LTE for Power Saving and Range Improvement - An apparatus, system, and method for reliable decoding of control information during LTE wireless transmissions is described. A mobile device may decode the PCFICH blindly, which may include obtaining resource elements (REs) that are reserved for Physical Downlink Control Channel (PDCCH), based on a largest value of a control format indicator (CFI), finding a total number of control channel elements (CCEs) according to the obtained REs, numbering the CCEs, and decoding the PDCCH for the largest value of the CFI over the numbered CCEs. Accordingly, the mobile device does not need to decode the PCFICH specifically. The mobile device may indicate to the NW that the mobile device is a constrained device, and the NW may responsively transmit control information using a reserved control format indication value corresponding to the UE being indicated as a constrained device. The mobile device may then not need to decode the PCFICH, and decode the PDCCH based on the PDCCH occupying a first four OFDM symbols. | 12-17-2015 |
20150365977 | Enhanced PRACH Scheme for Power Savings, Range Improvement and Improved Detection - Enhanced random access procedures for link-budget-limited user equipment (UE) devices are disclosed. A user equipment device may transmit a first message containing a Physical Random Access Channel (PRACH). The PRACH contains instances of a Zadoff-Chu sequence, and may be transmitted repeatedly as part of a single random attempt, to facilitate correlation data combining at the base station. The available Zadoff-Chu sequences may be partitioned among a plurality of sets, each set being associated with a respective Doppler shift range (or frequency hop pattern or time repetition pattern). A UE device may signal Doppler shift (or other information) to the base station by selection of one of the sets. The first PRACH transmission and the following PRACH transmission may occur in consecutive subframes. A UE device may select from a special set of Zadoff-Chu sequences (different from a conventional set of sequences), to signal its status as a link-budget-limited device. | 12-17-2015 |
20150365995 | Adaptive C-DRX Management - This disclosure relates to techniques for adaptive C-DRX Management. A wireless device and a cellular base station may establish a cellular link. According to some embodiments, the base station may monitor upcoming traffic with the wireless device. Based at least in part on the upcoming traffic for the wireless device, the base station may provide a command indicating to the wireless device to enter C-DRX. The command may further indicate to the wireless device a number of C-DRX cycles through which to remain in a low power state. | 12-17-2015 |
20150373649 | Power Allocation for Encoded Bits in OFDM Systems - Power allocation for encoded bits in OFDM systems. OFDM symbol subcarriers may be allocated to a wireless user equipment (UE) device by a base station. A first portion of the allocated subcarriers may include systematic bits and a second portion of the allocated subcarriers may include parity bits according to a coding scheme. Transmit power may be unevenly allocated to the subcarriers allocated to the UE, such that subcarriers including systematic bits are allocated different power than the subcarriers including parity bits. The OFDM symbols including the subcarriers allocated to the UE may be transmitted to the UE by the base station according to the allocated power distribution. | 12-24-2015 |
20150373689 | Selecting a Physical Data Channel based on Application Traffic Pattern - Selecting a physical channel for cellular communication based on application traffic pattern. A radio bearer may be established between a wireless device and a base station. A physical downlink channel may be selected for the radio bearer. The physical downlink channel may be selected based on an application traffic pattern of an application associated with the radio bearer. In some instances, a physical uplink channel may also be selected based on an application traffic pattern of an application associated with the radio bearer. | 12-24-2015 |
20150373774 | End-to-End Delay Adaptation with Connected DRX in a Cellular Voice Call - End-to-end delay adaptation in conjunction with connected discontinuous reception (C-DRX) mode communication during cellular voice calls. A Voice over LTE (VoLTE) call may be established between a first wireless user equipment (UE) device and a second UE. End-to-end delay between real-time transport protocol (RTP) layers of the first UE and the second UE for the VoLTE call may be estimated. The end-to-end delay may be compared with one or more thresholds A C-DRX cycle length for the VoLTE call may be modified based on comparing the end-to-end delay with the one or more thresholds. | 12-24-2015 |
20160007240 | Procedures for 3GPP Circuit Switched Fallback - Mobile devices, base stations, and/or relay stations may implement CSFB (circuit switched fallback) operations by using RRC (radio resource control) connection release and/or handover procedures. If the CSFB RAT (radio access technology) target is not well configured, the UE may be informed and provisioned by the NW during a CSFB procedure with the information to return to LTE. Having this information, the UE may perform an autonomous search of LTE cells after the CSFB call release, speeding up return to LTE. To minimize potential call failures during CSFB, the UE may autonomously perform an additional cell search, in particular a search for cells on a RAT different from the initial target RAT. This creates an opportunity to prevent call failure of CSFB calls that would otherwise fail. The UE may be provisioned during the CSFB procedure with information to perform the additional cell search, should such a search be necessary. | 01-07-2016 |
20160037448 | Apparatus, System, and Method for Parallelizing UE Wakeup Process - An apparatus, system, and method for parallelizing user equipment (UE) wakeup process are described. In one embodiment, power may be provided to a crystal oscillator to exit a first sleep state. One or more clocking signals may be provided to RF circuitry based on output from the crystal oscillator. Calibration and state restoration of the RF circuitry may be performed independent of baseband circuitry. State restoration of the baseband circuitry may be performed. Data may be received from a wireless communication network using the RF circuitry. The data may be processed using the baseband circuitry. State retention for the RF circuitry and the baseband circuitry may be performed. Finally, the crystal oscillator may be powered down to enter a second sleep state. | 02-04-2016 |
20160050658 | Radio Access Technology with Non-Continuous and Periodic PUSCH Transmission - In some embodiments, a user equipment (UE) and base station implement improved communication methods which enable a UE that is peak current limited to perform UL transmissions which are consistent with the UL timeline. Embodiments are also presented which enable a UE that is peak current limited to utilize a new form of distributed TTI (transmit time interval) bundling for improved uplink communication performance. In performing “distributed” TTI bundling, the UE may transmit a plurality of redundancy versions of first information to the base station, wherein the plurality of redundancy versions are transmitted in non-consecutive sub-frames with a periodicity of X ms. After the plurality of redundancy versions of first information are transmitted to the base station, the base station may provide a single acknowledge/negative acknowledge (ACK/NACK) to the UE. A method for dynamically generating and using a bundle size for TTI bundling is also disclosed. | 02-18-2016 |
20160073299 | Radio Resource Management for Packet-Switched Voice Communication - Techniques are disclosed relating to informing a network that a UE desires packet-switched voice communication. In one embodiment, a method includes receiving first information from a UE device requesting voice communication over a packet-switched network. In this embodiment, the method further includes transmitting, in response to the first information, second information to a base station serving the UE device, wherein the second information indicates that the UE device is requesting voice communication over the packet-switched network. In this embodiment, the transmitting is performed prior to establishment of a dedicated bearer by the base station for the UE device. In this embodiment, the second information operates to configure communications between the base station and the UE device to provide a particular quality of service for the packet-switched voice communication using the dedicated bearer. | 03-10-2016 |
20160073331 | Circuit Switched Fallback Optimization In Wireless Devices - Instead of barring an LTE network for the Long Bar Time duration (LBT) if the LTE cell doesn't support CSFB, a wireless communication device may perform a scan for LTE networks before expiration of the LBT if the UE has changed its location. When the UE is in LTE acquisition mode, or the necessary information about a CS network for CSFB is unavailable, the UE may maintain its state on both the LTE and CS network, and check CS paging messages to see if the UE can decode any status. Unlike for CSFB, checking for overhead messages may be performed over the LTE system, and the UE may wake up on CS pages to determine if a suitable network is available. By maintaining its state on both types of networks, the UE may use LTE for data services which would otherwise be provided by different systems for the CS networks when messages transmitted over LTE do not include CS registration information. | 03-10-2016 |
20160073339 | Enhanced DCI Formats for Link Budget Improvement in LTE - In some embodiments, a user equipment device (UE) may be configured to transmit an indication to a base station that the UE is link budget limited and receive control information encoded in a downlink control information (DCI) format. The DCI format may be determined based on the indication. The UE may decode the control information according to the DCI format. The DCI format may specify the number of bits for various parameters and may combine these parameters. Parameters may include format flag, hopping flag, modulation and coding scheme (MCS), redundancy version (RV), uplink index, downlink assignment index (DAI), carrier indicator, channel state information (CSI) request, sounding reference symbol (SRS) request, resource allocation type, localized/distributed indication, code-word swap, and so forth. Additionally, the DCI format may specify a bit length when using a particular number of resource blocks. | 03-10-2016 |
20160088542 | Multi-RAT Radio Resource Aggregation with Split Bearer Support - This disclosure relates to aggregation of radio resources provided according to multiple radio interfaces. According to some embodiments, a base station may establish a radio bearer with a wireless user equipment (UE) device. The radio bearer may initially utilize a first radio interface between the base station and the UE. The base station may receive an indication to aggregate radio resources of an access point that utilizes a second radio interface for the UE. Based on the indication to aggregate radio resources for the UE, the base station may redirect at least a portion of data of the radio bearer by way of the access point to be exchanged with the UE using the second radio interface. | 03-24-2016 |
20160095055 | DSP Assisted and On Demand RF and Analog Domain Processing for Low Power Wireless Transceivers - A wireless user equipment (UE) device may include a receiver and transmitter. The UE device may dynamically vary the fidelity requirements imposed on the analog signal processing performed by the receiver and/or the transmitter in response factors such as: amount of signal interference (e.g., out-of-band signal power); modulation and coding scheme; number of spatial streams; extent of transmitter leakage; and size and/or frequency location of resources allocated to the UE device. Thus, the UE device may consume less power on average than a UE device that is designed to satisfy fixed fidelity requirements associated with a worst case reception scenario and/or a worst case transmission scenario. | 03-31-2016 |
20160100304 | Peer to Peer Mobile User Equipment Communication with On-Demand Discovery Signal Transmission - In some embodiments, a user equipment device (UE) implements a method for discovering the presence of neighboring UEs using an on-demand discovery signal transmission technique. This discovery process may be performed to enable the UEs to perform peer-to-peer communications with each other, wherein peer-to-peer communications is defined as direct communication between the UEs without involving a base station. The UE may be configured to transmit a discovery request signal when it has moved greater than a threshold amount since transmission of a prior discovery request signal. The discovery request signal causes one or more neighboring UEs to each transmit a discovery signal in response, and also causes the UE which generated the discovery request signal to transmit its own discovery signal. The received discovery signal from each of the neighboring UEs is useable to discover, or detect the presence of, these neighboring UEs. | 04-07-2016 |
20160112162 | Adaptive HARQ for Half Duplex Operation for Battery and Antenna Constrained Devices - A user equipment (UE) implements improved communication methods which enable uplink (UL) transmissions consistent with an UL timeline. The UE may have a transmit duty cycle and may transmit acknowledge/negative acknowledge messages to a base station according to the transmit duty cycle. Additionally, the UE may be configured to determine signal-to-interference-plus noise ratio (SINR) between the UE and the base station and compare SINR to a threshold. The UE may transmit redundancy versions of data in consecutive sub-frames with a duty cycle of two transmissions per X+1 sub-frames if SINR is equal or above the threshold and redundancy versions using a duty cycle of one transmission per X sub-frames if SINR is below the threshold. Further, the UE may be configured to communicate a number of UL HARQ processes supported by the UE, receive first information in a first sub-frame, and send second information X sub-frames after the first sub-frame. | 04-21-2016 |
20160112181 | Adaptive HARQ for Half Duplex Operation for Battery and Antenna Constrained Devices - A user equipment (UE) implements improved communication methods which enable uplink (UL) transmissions consistent with an UL timeline. The UE may have a transmit duty cycle and may transmit acknowledge/negative acknowledge messages to a base station according to the transmit duty cycle. Additionally, the UE may be configured to determine signal-to-interference-plus noise ratio (SINR) between the UE and the base station and compare SINR to a threshold. The UE may transmit redundancy versions of data in consecutive sub-frames with a duty cycle of two transmissions per X+1 sub-frames if SINR is equal or above the threshold and redundancy versions using a duty cycle of one transmission per X sub-frames if SINR is below the threshold. Further, the UE may be configured to communicate a number of UL HARQ processes supported by the UE, receive first information in a first sub-frame, and send second information X sub-frames after the first sub-frame. | 04-21-2016 |
20160127990 | Apparatus, System, and Method for PDCCH Preparation in Radio Frequency Circuitry - An apparatus, system, and method for performing PDCCH preparation in RF circuitry are described. In one embodiment, power may be provided to a crystal oscillator to exit a first sleep state. One or more clocking signals may be provided to RF circuitry based on output from the crystal oscillator. Calibration and state restoration of the RF circuitry may be performed independent of baseband circuitry. A plurality of algorithms to prepare for receiving data form a wireless communication network may be performed independent of the baseband circuitry. After initiating the plurality of algorithms, state restoration of the baseband circuitry may be performed. Data may be received from a wireless communication network using the RF circuitry. The data may be processed using the baseband circuitry. State retention for the RF circuitry and the baseband circuitry may be performed. Finally, the crystal oscillator may be powered down to enter a second sleep state. | 05-05-2016 |
Patent application number | Description | Published |
20140313993 | Secondary Component Carrier Future Scheduling in LTE Carrier Aggregation - A wireless communication system is presented for future scheduling of secondary component carrier(s) (SCC) during carrier aggregation in LTE wireless communications. A primary component carrier in a first subframe can be used to indicate at what future subframe SCC data may exist for the mobile device (e.g., UE, etc.). The UE can then leave off all SCC receive circuitry until the future subframe, when it can turn on all needed SCC receive circuitry to receive the SCC data. After receiving the SCC data, the UE can again power off the SCC receive circuitry. | 10-23-2014 |
20150092563 | CONTROL SIGNALING OPTIMIZATION FOR LTE COMMUNICATIONS - The disclosure describes procedures for allocating network resources for a mobile device communicating within a Long Term Evolution (LTE) network. The mobile device can be configured to decode a physical downlink shared channel (PDSCH), acquire first and second physical downlink control channel (PDCCH) decode indicators from a payload of the same PDSCH communication, decode a PDCCH for downlink control information (DCI) associated with a first application data type based on the first PDCCH decode indicator a second application data type based on the second PDCCH decode indicator. The first PDCCH decode indicator can identify an upcoming LTE subframe where the mobile device is required to decode the PDCCH for DCI associated VoLTE resource assignments and the second PDCCH decode indicator can identify an upcoming LTE subframe where the mobile device is required to decode the PDCCH for DCI associated with high bandwidth best effort (BE) data resource assignments. | 04-02-2015 |
20150092645 | DELAYED AND BUNDLED RETRANSMISSIONS FOR LOW BANDWIDTH APPLICATIONS - Apparatus and methods are disclosed for performing delayed hybrid automatic repeat request (HARQ) communications in the downlink (DL) to reduce power consumption for a user equipment (UE) during a connected mode discontinuous reception (C-DRX) cycle. An enhanced NodeB can be configured to monitor a physical uplink control channel (PUCCH) for DL HARQ information to determine when the PUCCH contains a negative acknowledgement (NACK) message, and in response to determining that the PUCCH contains a NACK message, the eNodeB can wait until a next C-DRX ON duration to transmit a HARQ DL retransmission. The eNodeB can also determine whether or not to bundle the HARQ DL retransmission in consecutive transmission time intervals, based on a signal to interference plus noise ratio (SINR) associated with the UE. | 04-02-2015 |
20150092646 | CONTROL SIGNALING OPTIMIZATION FOR LTE COMMUNICATIONS - The disclosure describes apparatus and methods for including downlink control information (DCI) normally associated with the physical downlink control channel (PDCCH) within a physical downlink shared channel (PDSCH) to reduce power consumption for a user equipment (UE) operating in a Long Term Evolution (LTE) radio resource control (RRC) connected mode. An enhanced NodeB base station can be configured to generate DCI associated with a future downlink resource assignment or uplink grant for the UE on the PDSCH or a physical uplink shared channel (PUSCH), and then include this DCI within the payload of a current PDSCH communication, such that the PDCCH does not need to be decoded by the UE during a time when DCI for future PDSCH communication is included within a current PDSCH. | 04-02-2015 |
20150092647 | CONTROL SIGNALING OPTIMIZATION FOR LTE COMMUNICATIONS - The disclosure describes procedures for including downlink control information (DCI) within a physical downlink shared channel (PDSCH) communication to reduce power consumption for a user equipment (UE) operating in a Long Term Evolution (LTE) network. A network apparatus can be configured to identify an expected DCI change for the UE, determine whether an LTE subframe location for the DCI change is known, generate either a general or a specific DCI change indicator, and send the corresponding DCI change indicator to the UE on the PDSCH. The specific DCI change indicator can include a bitmap identifying a particular upcoming LTE subframe where the UE is required to decode the PDCCH for DCI, and the general DCI change indicator can include a bit flag identifying a time associated with one or more upcoming LTE subframes when the UE should decode the PDCCH for DCI. | 04-02-2015 |
20150092893 | PHYSICAL DOWNLINK CONTROL CHANNEL DECODING - Methods and apparatuses to reduce resource consumption by a mobile wireless device when decoding control channel information, such as a physical downlink control channel (PDCCH), in a subframe received from an LTE wireless network are disclosed. Representative methods include demodulating a first set of one or more PDCCH OFDM symbols contained in the subframe based on a first channel estimate; obtaining a second channel estimate based on a second OFDM symbol before demodulating a second set of one or more PDCCH OFDM symbols contained in the subframe based on both the first channel estimate and the second channel estimate. When the PDCCH indicates no downlink assignments for the subframe, the mobile wireless device enters a reduced power consumption mode after demodulating the PDCCH. | 04-02-2015 |
20150095955 | SEAMLESS DISPLAY OF VIDEO DURING CONNECTION SWITCHING - An electronic device uses one antenna to wirelessly communicate information with two different wireless networks via concurrent connections associated with different radio access technologies. More specifically, the electronic device may receive video via a first of the connections using a multicast communication protocol. In order to maintain the second connection, the electronic device may switch, for a time interval, from the first connection to the second connection during switching events. This switching can disrupt displayed content associated with the video. To prevent this disruption, in response to a trigger that warns of an upcoming switching event, the electronic device accesses a portion of the video in a buffer during the time interval associated with the switching event. When the communication circuit switches back to the first connection after the switching event, the electronic device reverts to the video communication using the multicast communication protocol. | 04-02-2015 |
20150181472 | ESR Extension for LTE TDD to FDD Redirection for VoLTE - This application presents techniques for an LTE user equipment (UE) to use an extended service request (ESR) extension for LTE TDD to FDD redirection for mobile originated and mobile terminated VoLTE calls. These techniques include the UE informing the network that it supports the particular features of the ESR extensions presented. Once the UE attaches to the network, a radio resource control (RRC) message can be sent to indicate that the UE supports the new ESR extension, after which the UE can use the new ESR extension to facilitate an LTE TDD to FDD redirection for the VoLTE call. | 06-25-2015 |
20150181483 | VoLTE Call Establishment in TD and FDD LTE Networks - This application discloses various techniques for call establishment using voice-over LTE (VoLTE) in networks supporting time division (TD) and frequency division duplexed (FDD) LTE communication systems. Such techniques can include systems and methods for mobile-originated calls for a UE in a TD-LTE cell, systems and methods for mobile-terminated calls for a connected UE in a TD-LTE cell and systems and methods for mobile-terminated calls for an idle UE in a TD-LTE cell. These methods and systems can leverage component carriers from a carrier aggregating capable UE to facilitate more efficient and/or effective UE call establishment. | 06-25-2015 |
20150222410 | METHOD AND APPARATUS FOR FREQUENCY HOPPING COEXISTENCE IN UNLICENSED RADIO FREQUENCY BANDS FOR MOBILE DEVICES - Apparatus and methods for frequency hopping among a set of frequency channels used for secondary cells by wireless devices operating with carrier aggregation across a combination of licensed and unlicensed radio frequency (RF) bands are described. A wireless device establishes a connection with an eNodeB using a primary component carrier (PCC) of a primary cell in a licensed radio frequency band. The wireless device obtains a configuration for a secondary cell operating in the unlicensed radio frequency band from the eNodeB, the configuration including a set of RF channels and a frequency-hopping pattern for communicating via a secondary component carrier in the secondary cell. The wireless device transmits to or receives from the eNodeB, via the SCC during a first hop of the frequency-hopping pattern using a first frequency channel in the set of frequency channels, and using a second frequency channel during a second hop. | 08-06-2015 |
20150223115 | OFFLOADING AND RESELECTION POLICIES AND RULES FOR MOBILE DEVICES - Apparatus and methods for managing use of radio frequency channels in unlicensed radio frequency bands by a wireless communication device in communication with a cellular wireless network are disclosed. The wireless communication device obtains, from an eNodeB of the wireless network, one or more access network discovery and selection function (ANDSF) policies that include rules for mobility of the wireless communication device and offloading of traffic for the wireless communication device to radio frequency channels in an unlicensed radio frequency band. The wireless communication device determines when at least one radio frequency channel in the unlicensed radio frequency band is available for offloading traffic, for network selection, for network re-selection, or for a supplemental connection via carrier aggregation based on the ANDSF policies, measured interference levels, and/or loading information provided by the eNodeB. | 08-06-2015 |
20150223243 | METHOD AND APPARATUS FOR TIME DIVISION COEXISTENCE IN UNLICENSED RADIO FREQUENCY BANDS FOR MOBILE DEVICES - Apparatus and methods for time division multiplexing of radio frequency channels in unlicensed radio frequency bands by a wireless device in communication with a cellular wireless network are disclosed. The wireless device obtains, from an eNodeB, a configuration for carrier aggregation using a primary component carrier (PCC) in a licensed radio frequency band and at least one secondary component carrier (SCC) in an unlicensed radio frequency band. The configuration information specifies an “on” time period and an “off” time period for a repetitive time division cycle to use the at least one SCC in the unlicensed radio frequency band. During an “on” time period, the wireless device can transmit or receive using the PCC and the at least one SCC, as scheduled by the eNodeB. During an “off” time period, the wireless device can transmit or receive using the PCC and not using the at least one SCC. | 08-06-2015 |
20150271824 | DYNAMIC SELECTION OF POWER REDUCTION VALUES - A method for dynamically selecting an A-MPR value to apply for an uplink transmission is provided. The method can include a wireless communication device receiving an indication from a network that A-MPR should be applied for uplink transmissions within a frequency band used for communication between the wireless communication device and the network. The method can further include the wireless communication device receiving an RB allocation for a subset of RB's within the frequency band from the network. The method can additionally include the wireless communication device determining an allocation ratio and a distribution characteristic of the allocated subset of RB's within the frequency band. The method can also include the wireless communication device selecting an A-MPR value to apply based at least in part on the allocation ratio and the distribution characteristic. The method can further include the wireless communication device applying the selected A-MPR. | 09-24-2015 |
20160080067 | ADAPTIVE USE OF RECEIVER DIVERSITY - A method for adaptively disabling receiver diversity is provided. The method can include a wireless communication device determining an active data traffic pattern; defining a threshold channel quality metric based at least in part on a threshold channel quality needed to support a threshold quality of service for the active data traffic pattern; comparing a measured channel quality to the threshold channel quality metric; and disabling receiver diversity in an instance in which the measured channel quality metric satisfies the threshold channel quality metric. | 03-17-2016 |