Patent application number | Description | Published |
20090046605 | Uplink scheduling grant for time division duplex with asymmetric uplink and downlink configuration - Singalling uplink and downlink scheduling grants for a plurality of subframes in a time division duplex frame is addressed. In one aspect the allocated uplink subframes are divided into groups, so the number of groups equals the number of downlink subframes being allocated. Uplink grants for the groups are sent with the downlink grants, and for those groups that have more than one uplink subframe, the grant message also indicates which uplink subframes are included in that group. In another aspect there are two sets of grant messages, one for the uplink subframes and one for the downlink subframes. Each of the uplink grant messages is sent on a different uplink grant message, and there is a one-to-one correspondence between the uplink grant channel and the uplink subframe being scheduled by the grant. That correspondence may also be signalled with the grant messages. | 02-19-2009 |
20090046649 | Mapping of uplink ACK in TDD with asymmetric frame structure - For each of at least two ratios of downlink subframes exceeding uplink subframes in a frame is stored a pre-determined grouping of a plurality of downlink subframes that map to one uplink subframe. A frame is scheduled corresponding to one of the ratios. Scheduling grants are transmitted to user equipments UEs in at least some of the scheduled downlink subframes, wherein the number of scheduled downlink subframes is greater than the number of scheduled uplink subframes in the frame. The UEs receive their grant, map the downlink subframe in which the scheduling grant was received to an uplink subframe using the stored predetermined grouping for the ratio that corresponds to the frame in which the scheduling grant was received, and send their ACK/NACK for the grant in the mapped subframe. The network receives multiple ACKs/NACKs in a single uplink subframe and maps them, to the downlink subframes of the group. | 02-19-2009 |
20090207811 | FREQUENCY QUALITY CRITERIA FOR INTER-FREQUENCY HANDOVER IN A TD-CDMA COMMUNICATION SYSTEM - A method for determining whether to perform handover of a UE apparatus to a candidate cell and carrier frequency of a TD-CDMA telecommunications network (such as a TD-SCDMA network) based separately on coverage and capacity, using one decision metric for coverage (e.g. based on received signal code power for the candidate cell and carrier frequency) and a different decision metric for capacity (e.g. based on a quantity proportional to the received signal code power for the candidate cell and carrier frequency and inversely proportional to a measure of total interference in the candidate cell on the carrier frequency. Corresponding equipment and a computer program product are also provided. In deciding whether handover is needed based on capacity, a threshold for received signal code power may be used in addition to the metric for capacity. | 08-20-2009 |
20090323602 | Efficient bandwith request for broadband wireless networks - Methods and apparatuses for scheduling transmissions between a base station and multiple user stations in a broadband wireless access network may include a subscriber station generating a bandwidth request which includes one of a limited number of available and predefined preamble sequences and a data portion identifying the resources requested. The subscriber station randomly selects a contention slot in a wireless channel, allocated by the base station, for sending a bandwidth request. The receiving base station is able to detect the preamble sequence of bandwidth requests and differentiate between subscribers even when bandwidth requests of two or more subscribers may collide by virtue of selecting the same contention slot. In this manner, latency and overhead of bandwidth requests may be improved. Additional variants and embodiments are also disclosed. | 12-31-2009 |
20100005354 | Detection and recovery of HARQ NAK-TO-ACK feedback error in wireless communications systems - In wireless communication networks that use ARQ/HARQ feedback protocols, when a first device receives an apparent HARQ ACK from a second device, the first device may make a new transmission using a HARQ Channel ID whose previous usage was under conditions indicating a likelihood of error in the ACK. When the second device receives the new transmission, the reuse of that HARQ Channel ID in a new transmission rather than a retransmission lets the second device know that its previous NAK transmission was incorrectly received as an ACK. | 01-07-2010 |
20100172318 | Handling Hybrid Automatic Repeat Requests in Wireless Systems - A mobile station may implement an uplink hybrid automatic repeat request acknowledgement channel. The mobile station may use frequency hopping to randomize inter cell interference. The mobile unit may use time division multiplexing, frequency division multiplexing, and/or code division multiplexing. | 07-08-2010 |
20100202376 | SCHEDULING OF VOICE OVER IP DATA - Voice over Internet Protocol (VoIP) transfer is provided over radio links between mobile stations and base stations with a mechanism to schedule initial transmission within voice spurts when semi-persistent allocation of radio resources is employed. The radio link is changed during the voice spurt by allocating different physical resource blocks or by changing transmission parameters with given rescheduling intervals. The scheduling is informed from the base station to involved MS by using data link layer VoIP packet padding bits. The radio link can also be changed per initiative of the MS so that the MS codes a predetermined request into data link layer padding bits of an uplink VoIP packet. The requests from the MS typically involve a change of audio coding mode or informing of the present packet buffer status for VoIP packets at the MS. | 08-12-2010 |
20100208831 | TECHNIQUES FOR QUICK ACCESS CHANNEL INFORMATION LOADING IN WIRELESS NETWORKS - An embodiment of the present invention provides a method of quick access channel information loading in wireless networks, comprising mapping at least one quick access channel to one distributed resource unit of control tiles, said control tiles being spread across consecutive sub-carriers and consecutive OFDMA symbols, wherein each control tile and a predetermined number of sub carriers are used to send a bandwidth indicator and a predetermined number of sub carriers are used to send a bandwidth request message, and wherein there exist unique orthogonal sequences for the bandwidth indicator and each of the sequences are capable of being selected as a preamble sequence. | 08-19-2010 |
20100226357 | Differential codebook for a wireless network, MIMO beamforming system using same, and method of reducing a quantization error in a MIMO beamforming system for a wireless network using same - A differential codebook for a wireless network includes a plurality of codewords and [e | 09-09-2010 |
20100227565 | TRANSMISSION OF CHANNEL QUALITY DATA IN WIRELESS COMMUNICATION SYSTEMS - Briefly, in accordance with one or more embodiments, data transmitted from a transmitter is received in a downlink channel, and channel quality data is fed back to the transmitter in a first uplink channel or in a second uplink channel. Channel quality data is feedback at a lower rate on the first uplink channel and channel quality data is feedback at a higher rate on the second uplink channel in the event there is a higher amount of data to be fed back. Link adaptation may be utilized to select a transmission rate on the second uplink channel, wherein the transmission rate is selected based at least in part on a channel condition or a user location. | 09-09-2010 |
20100260140 | Apparatus, Method and Computer Program Product Providing Non-Synchronized Random Access Handover - A method is provided including sending a source Node-B a target Node-B cell-specific unique identifier for a user equipment to be handed over to the target Node-B, sending the source Node-B a predetermined access preamble sequence for the user equipment to be handed over to the target Node-B, and in response to receiving the predetermined access preamble sequence from the user equipment, sending the user equipment handover related information in association with the cell-specific unique identifier for handing over to the target Node-B. | 10-14-2010 |
20100272033 | HARQ BUFFER MANAGEMENT AND FEEDBACK DESIGN FOR A WIRELESS SYSTEM - A method is disclosed for performing HARQ buffer management. The HARQ buffer management method is a new approach to buffer overflow management that allows the mobile station, rather than the base station, to control the size of its buffer. The HARQ buffer management reports buffer size, buffer occupancy status, and buffer overflow to the base station, to facilitate efficient communication between the base station and the mobile station. | 10-28-2010 |
20100272047 | FEEDBACK CHANNEL RELEASE - Briefly, in accordance with one or more embodiments, a communication link is established between a base station and a mobile station. The base station transmits a feedback allocation to the mobile station for the allocation of the resources of a feedback channel. If the feedback allocation is to be terminated, the base station transmits a feedback deallocation to the mobile station. If the feedback deallocation is successful, the mobile station transmits a deallocation confirmation to the base station to confirm receipt of the feedback deallocation. | 10-28-2010 |
20100273435 | UPLINK FEEDBACK CHANNEL REPORTING MECHANISM IN WIRELESS SYSTEMS - An uplink feedback channel reporting method is disclosed for using the primary and secondary fast feedback channels to efficiently report the channel quality, MIMO feedback, and CQI types of data from a mobile station to a base station. The reporting method reports regular information periodically and non-regular information on demand. | 10-28-2010 |
20100329316 | Techniques for transmission of channel quality data in wireless systems - An embodiment of the present invention provides an apparatus, including a transceiver adapted for use in a wireless network using a fast feedback channel design that incorporates a 2-two level adaptive fast feedback channel framework separating uplink (UL) fast feedback channels into primary and secondary UL fast feedback channels. | 12-30-2010 |
20110002263 | BEAMFORMING USING BASE AND DIFFERENTIAL CODEBOOKS - Embodiments of methods and apparatus for determining and/or quantizing a beamforming matrix are disclosed. In some embodiments, the determining and/or quantizing of the beamforming matrix may include the use of a base codebook and a differential codebook. Additional variants and embodiments are also disclosed. | 01-06-2011 |
20110002280 | MIDAMBLE FOR WIRELESS NETWORKS - Briefly, in accordance with one or more embodiments, a midamble for a downlink subframe is generated by rotating an order of midamble tones per antenna between two or more subbands. A Golay sequence may be utilized in the modulation of one or more subcarriers of the midamble via a reuse-3 arrangement. Alternatively, a reuse-1 arrangement may be applied to the midamble. | 01-06-2011 |
20110010598 | User Specific Load Balancing - In accordance with exemplary embodiments of the invention there is a method and apparatus to detect with a hybrid automatic repeat request function a collision between an uplink packet re-transmission and a new uplink packet transmission within a hybrid automatic repeat request process, and in response, to dynamically allocating resources for transmitting the new uplink packet transmission in a different hybrid automatic repeat request process that does not collide with the uplink packet re-transmission. In accordance with other exemplary embodiments of the invention, there is a method and apparatus to transmit a packet re-transmission in a hybrid automatic repeat request process using a semi-persistently scheduled uplink resource, and responsive to receiving a dynamic allocation of a different hybrid automatic repeat request process, to transmit a new packet using the dynamically allocated different hybrid automatic repeat request process. | 01-13-2011 |
20110044183 | RESOURCE METRIC QUANTIZATION IN WIRELESS DATA COMMUNICATIONS - A resource metric quantization is described that has use for resources of wireless data communications system. In one example the quantization include measuring a signal parameter for a plurality of frequency partitions, setting a first resource metric for a first frequency partition equal to a first value, determining a second and a third resource metric for a second and third frequency partition, respectively, based on comparing the measured signal parameter for the second and third frequency partitions to the measured signal parameter for the first partition, encoding a second and a third resource metric, and transmitting the encoded resource metrics to a remote wireless station. | 02-24-2011 |
20110058522 | METHOD AND APPARATUS FOR TRANSMITTING AN ACK/NACK SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - Machine-readable media, methods, apparatus and system for transmitting ACK/NACK signal in a wireless communication system are described. In some embodiments, a sequence corresponding to one of acknowledge (ACK) information and non-acknowledge (NACK) information may be determined. Then, the sequence may be mapped onto a transmission channel for later transmission from the mobile station to a base station. In some embodiments, the transmission channel may be allocated with at least a part of three feedback mini-tiles (FMTs), wherein each of the FMTs comprises two subcarriers contiguous in frequency domain by six orthogonal frequency division multiplexing (OFDM) symbols contiguous in time domain and the three FMTs being discontinuous in frequency domain. | 03-10-2011 |
20110075619 | Apparatus and method for transmitting fast feedback data in wireless systems - Embodiments of the present invention may help facilitate improved performance for high throughput, mobile wireless networks, e.g., IEEE 802.16m, mobile implementations for 3GPP Long Term Evolution (LTE) including LTE advanced mobile phone networks, and other types of high bandwidth networks. In some embodiments, provided are orthogonal sequences with desirable correlation properties for, e.g., 4-6 bits of information, among other things, typically achieving improved performance at varied vehicle speeds. In some embodiments, correlation distances for 6 bits may be less than 3.86, for 5 bits may be less than 3.12, and for 4 bits may be less than 1.95. Additionally, in some embodiments, dedicated coding for PFBCH information may be provided to achieve improved performance for most (if not all) information bits at a relatively wide range of vehicle speeds. Different code sequences for different tiles in one PFBCH channel may be applied for same messages to overcome error floors in high speed scenarios. | 03-31-2011 |
20110075650 | POLAR CAP RESET METHOD FOR DIFFERENTIAL CODEBOOK FOR WIRELESS COMMUNICATIONS - Techniques for periodically resetting the polar cap for a differential codebook precoding scheme for wireless communications are described. An apparatus may comprise a fixed device for a mobile broadband communications system utilizing an orthogonal frequency-division multiple access technique, the fixed device having a precoding module operative to generate a precoding matrix using a received first codeword of a first base codebook, subsequently reconstruct the precoding matrix using a received polar-cap codeword of a polar-cap codebook, and periodically reset the precoding matrix to clear accumulated error at the fixed device using a received second codeword of a second base codebook. Other embodiments are described and claimed. | 03-31-2011 |
20110116468 | Handover of user equipment - The invention relates to supporting a handover of user equipment ( | 05-19-2011 |
20110158218 | Techniques utilizing step size adaptation for differential beamforming in wireless networks - An embodiment of the present invention provides a method used in transmit beam forming, comprising, providing differential feedback by using variable differential codebooks across a plurality of feedbacks wherein the differential codebooks may have different shapes, and/or spans, and/or the numbers of codewords across feedbacks. | 06-30-2011 |
20110158337 | OFDM TRANSMITTER AND METHODS FOR REDUCING THE EFFECTS OF SEVERE INTERFERENCE WITH SYMBOL LOADING - Embodiments of an OFDM transmitter and method of reducing the effects of interference on subcarriers in an OFDM system by symbol loading are disclosed herein. A linear transformation is performed on a group of two or more input data symbols that are mapped to different signal dimensions to generate a corresponding two or more output data symbols. Each of the output data symbols has an increased number of constellation points. Each output data symbol is configured for transmission within one of the different signal dimensions. The linear transformation is configured so that each of the two or more output data symbols carry the information of each of the input data symbols of the group. This coding together of input data symbols that are mapped to different signal dimensions may provide improved reliability against fading and severe interference. The different signal dimensions may comprise a frequency, a time and/or a space dimension. | 06-30-2011 |
20110216722 | CONTENTION-BASED TRANSMISSION WITH CONTENTION-FREE FEEDBACK FOR REDUCING LATENCY IN LTE ADVANCED NETWORKS AND ENHANCED PUCCH - Methods for contention-based transmission with contention-free feedback for reduced latency in LTE Advanced networks and an enhanced PUCCH are generally disclosed herein. User equipment (UE) may transmit a contention sequence on a physical uplink control channel (PUCCH) to an enhanced-Node B (eNB) and may concurrently transmit data requesting uplink resources on a physical uplink shared channel (PUSCH) to the eNB. The contention sequence is transmitted on the PUCCH in accordance with a format that is assigned by the eNB. The contention sequence is either randomly selected by the UE or assigned by the eNB. When the contention sequence and data are not successfully received by the eNB, the UE may fall back to a more conventional random access channel (RACH) procedure for uplink resource allocation. | 09-08-2011 |
20110249655 | TECHNIQUES USING DIFFERENTIAL PRECODING FOR HIGHLY CORRELATED CHANNELS IN WIRELESS NETWORKS - An embodiment of the present invention provides a method of using differential precoding for highly correlated channels in a wireless network, comprising, using a differential codebook optimized for highly correlated antennas. | 10-13-2011 |
20110268102 | TECHNIQUES FOR FORMATTING SIGNALS FOR TRANSMISSION USING A WIRELESS NETWORK - Techniques are described for forming signals for transmission to a receiver. Two transmitters can form resource blocks with different Physical Uplink Control Channel (PUCCH) demodulation reference signal (DMRS) patterns that are orthogonal over time and/or frequency to each other. The transmitters can simultaneously transmit the same resource block but with different DMRS patterns. If a receiver is mounted with two antennas, the receiver can utilize a MIMO receiver to differentiate resource blocks from two transmitters. | 11-03-2011 |
20110269493 | Control channel interference mitigation - In some embodiments, control channel data is passed between neighboring base stations to allocate control channel resources to mitigate inter-cell interference. | 11-03-2011 |
20110280174 | METHOD AND DEVICE FOR IMPLICIT RELAY - Embodiments of a method and apparatus for implicit relay of communication between a base station and a subscriber station within a wireless network are described. Some embodiments may reduce co-channel interference at the subscriber station and some embodiments may allow the base station to reduce its transmission power. Other embodiments may be described and claimed. | 11-17-2011 |
20120038521 | Configurable common rerfernce signal port for reference signal received power in distributed antenna systems - A method of determining reference signal received power (RSRP) by user equipment (UE) associated with a distributed antenna system (DAS) may include detecting at least three different reference signals in one or more common reference signals (CRSs) that are associated with different antennas in the DAS. The method may also include determining at least three different RSRPs corresponding to the at least three different reference signals. The at least three different RSRPs may be level 3 filtered to produce at least three corresponding filtered powers. The UE may report a maximum of the at least three corresponding filtered powers to the distributed antenna system. | 02-16-2012 |
20120045003 | COMMUNICATION STATION AND METHOD FOR EFFICIENTLY PROVIDING CHANNEL FEEDBACK FOR MIMO COMMUNICATIONS - Embodiments of a communication station and methods for efficiently providing channel feedback for MIMO communications over an OFDM channel are generally described herein. In some embodiments, receiving stations may perform a recursive differential quantization of channel information across time and/or frequency to generate quantized differential channel feedback. The quantized differential channel feedback from each receiving station may be used by a transmitting station to precode MIMO transmissions to one or more of the receiving stations. The quantized differential channel feedback may be either a quantized differential channel matrix or a quantized differential beamforming matrix. | 02-23-2012 |
20120063442 | TECHNIQUES FOR QUICK ACCESS CHANNEL INFORMATION LOADING IN WIRELESS NETWORKS - An embodiment of the present invention provides a method of quick access channel information loading in wireless networks, comprising mapping at least one quick access channel to one distributed resource unit of control tiles, said control tiles being spread across consecutive sub-carriers and consecutive OFDMA symbols, wherein each control tile and a predetermined number of sub carriers are used to send a bandwidth indicator and a predetermined number of sub carriers are used to send a bandwidth request message, and wherein there exist unique orthogonal sequences for the bandwidth indicator and each of the sequences are capable of being selected as a preamble sequence. | 03-15-2012 |
20120082082 | FRAMEWORK FOR COORDINATED MULTIPOINT TRANSMISSION BASED ON A MULTICELL MAC/RRC DESIGN - Briefly, in accordance with one or more embodiments, two or more cells are configured to perform coordinated multipoint (CoMP) transmission for one or more user equipment devices with a common media access control (MAC) or a common radio resource control (RRC). Measurement information is received from the one or more user equipment devices. One or more of the cells may be deactivated, or one or more additional cells may be activated for coordinated multipoint transmission based at least in part on the measurement information. | 04-05-2012 |
20120082190 | PMI FEEDBACK WITH CODEBOOK INTERPOLATION - Various embodiments of this disclosure may describe apparatuses, methods, and systems for interpolation of precoding matrixes to increase feedback accuracy of the channel state information (CSI) feedback in a wireless communication network. Other embodiments may also be disclosed or claimed. | 04-05-2012 |
20120113830 | ENHANCED NODE B AND METHOD FOR PRECODING WITH REDUCED QUANTIZATION ERROR - Embodiments of an enhanced Node B (eNB) and method for precoding with reduced quantization error are generally described herein. In some embodiments, first and second precoding-matrix indicator (PMI) reports may be received on an uplink channel and a single subband precoder matrix may be interpolated from precoding matrices indicated by both the PMI reports. Symbols for multiple-input multiple output (MIMO) beamforming may be precoded using the interpolated precoder matrix computed for single subband for a multiple user (MU)-MIMO downlink orthogonal frequency division multiple access (OFDMA) transmission. In some embodiments, each of the first and second PMI reports includes a PMI associated with a same subband that jointly describes a recommended precoder. | 05-10-2012 |
20120163291 | Physical uplink control channel Interference Mitigation in heterogenous networks - In some embodiments, a wireless device comprises a baseband processor, a control module coupled to the signal processor and comprising logic to map a first set and at least one redundant set of physical uplink control channel (PUCCH) blocks into a subframe structure, wherein the at least one redundant set of PUCCH blocks is embedded in an interior section of the subframe, an RF modulator/demodulator coupled to the baseband processor to modulate/demodulate the PUCCH blocks for communication within a predetermined frequency range, and a transmitter to transmit the PUCCH blocks. Other embodiments may be described. | 06-28-2012 |
20120176965 | CQI DEFINITION FOR TRANSMISSION MODE 9 IN LTE-ADVANCED - An evolved Node B (eNB) in a 3GPP LTE-based network receives Channel State Information-Reference Signal (CSI-RS) from a User Equipment (UE) that is configured with Precoder Matrix Indictor (PMI) disabled. A channel is estimated between the eNB and the UE for link adaptation in Transmission Mode 9 (TM9) based on CSI-RS by the UE and SRS by the eNB. CQI is calculated at UE such that if a number of CSI-RS antenna ports equals one, TM9 transmission from the eNB to the UE uses a predetermined single antenna port. If the number of CSI-RS antenna ports equals two, TM9 transmission from the eNB to the UE uses transmit diversity. If the number of CSI-RS antenna ports does not equal one or two, TM9 transmission from the eNB to the UE uses spatial multiplexing based on a rank-1 precoder that is determined from a wideband channel covariance matrix R. | 07-12-2012 |
20120201227 | FREQUENCY QUALITY CRITERIA FOR INTER-FREQUENCY HANDOVER IN A TD-CDMA COMMUNICATION SYSTEM - A method for determining whether to perform handover of a UE apparatus to a candidate cell and carrier frequency of a TD-CDMA telecommunications network (such as a TD-SCDMA network) based separately on coverage and capacity, using one decision metric for coverage (e.g. based on received signal code power for the candidate cell and carrier frequency) and a different decision metric for capacity (e.g. based on a quantity proportional to the received signal code power for the candidate cell and carrier frequency and inversely proportional to a measure of total interference in the candidate cell on the carrier frequency. Corresponding equipment and a computer program product are also provided. In deciding whether handover is needed based on capacity, a threshold for received signal code power may be used in addition to the metric for capacity. | 08-09-2012 |
20120257575 | CO-PHASING OF TRANSMISSIONS FROM MULTIPLE INFRASTRUCTURE NODES - Briefly, in accordance with one or more embodiments, mobile station or user equipment receives pilot signals from two or more infrastructure nodes in a distributed antenna system, and calculates phase or timing information, or combinations thereof, from the pilot signals. The mobile station feeds back the phase or timing information, or combinations thereof, to the infrastructure nodes, and then receives one or more subsequent transmissions from the infrastructure nodes with phase shift or timing adjustments, or combinations thereof, calculated by the infrastructure nodes and applied to the spatial streams transmitted by the infrastructure nodes. | 10-11-2012 |
20130083744 | PHYSICAL-LAYER CELL IDENTITY (PCI) PARTITION FOR HETEROGENEOUS NETWORKS - Technology for partitioning small cell physical-layer cell identities (PCI) at a node in a heterogeneous network (HetNet) is disclosed. One method can include the node identifying at least one small cell PCI of a plurality of small cells in a macro cell. Each small cell PCI can be associated with a low power node (LPN) in the HetNet. The node can generate a small cell PCI list to include the at least one small cell PCI. The node can broadcast the small cell PCI list to a wireless device. | 04-04-2013 |
20130100898 | BEAMFORMING USING BASE AND DIFFERENTIAL CODEBOOKS - Embodiments of methods and apparatus for determining and/or quantizing a beamforming matrix are disclosed. In some embodiments, the determining and/or quantizing of the beamforming matrix may include the use of a base codebook and a differential codebook. Additional variants and embodiments are also disclosed. | 04-25-2013 |
20130114658 | CHANNEL STATE INFORMATION FEEDBACK IN COORDINATED MULTI-POINT SYSTEM - Embodiments of the present disclosure describe devices, methods, computer-readable media and systems configurations for communication of channel state information among network entities. In various embodiments, may calculate first-, second- and third-stage channel state information for nodes of a coordinated multipoint measurement set. Other embodiments may be described and/or claimed. | 05-09-2013 |
20130163551 | SEARCH SPACE DETERMINATION - Embodiments of the present disclosure describe apparatuses, systems, methods, and articles of manufacture for identifying search space candidates that may be used in the transmission of downlink control information. Other embodiments may be described and claimed. | 06-27-2013 |
20130188533 | Dynamic Direction Changing in Time Division Duplex Radios - In accordance with some embodiments, in a time division duplex system, the transmission direction may be changed dynamically, for example in response to instantaneous traffic conditions. Particularly in some embodiments an eNodeB or base station may, in response to instantaneous traffic conditions, change the direction of transmission in certain subframes. In some embodiments this can be done in a way which is backwards compatible with prior generations of Long-Term Evolution (LTE) radio systems. | 07-25-2013 |
20130188566 | LTE ENHANCEMENTS FOR SMALL PACKET TRANSMISSIONS - Disclosed in some examples is a method of wireless resource block assignment in a long term evolution wireless network including creating a downlink control information message for a user equipment, the downlink control information message comprising: a resource block assignment field which indicates up to N physical resource blocks scheduled to the user equipment by specifying an index into a plurality of all possible physical resource block allocations of between 1 and N resource blocks, wherein the resource block assignment field comprises at most a number of bits necessary to address all of the possible physical resource block allocations for assignments of 1 to N physical resource blocks, and wherein N is less than a total number of physical resource blocks; and sending the downlink control information over a physical downlink control channel using orthogonal frequency division multiplexing. | 07-25-2013 |
20130195070 | TIME AND FREQUENCY SYNCHRONIZATION FOR LTE-ADVANCED NEW CARRIER TYPE - A particular kind of component carrier that may be used as a secondary cell in an LTE system is a new type carrier that has reduced or eliminated legacy control signaling such as the omission of CRSs. Alternative techniques are described for performing timing and frequency synchronization in the downlink between an eNB and a UE when CRSs are not present in a component carrier. These techniques involve using either channel state information reference signals or UE-specific reference signals. | 08-01-2013 |
20130223495 | TECHNIQUES USING DIFFERENTIAL PRECODING FOR HIGHLY CORRELATED CHANNELS IN WIRELESS NETWORKS - An embodiment of the present invention provides a method of using differential precoding feedback for correlated channels, comprising, transmitting by a mobile station (MS) as feedback an index angle for a differential discrete Fourier transform (DFT) codeword corresponding to a shift of a dominant beam represented by a base codeword, where the feedback corresponds to a precoding vector V(t)=Q({circumflex over (θ)}) for index angle θ, where | 08-29-2013 |
20130242770 | In enhanced physical downlink control channel (ePDCCH) - Technology for transmitting a distributed control channel element (CCE) for an enhanced physical downlink control channel (ePDCCH) and a localized CCE in a physical resource block (PRB) pair from a node and technology for physical downlink shared channel (PDSCH) physical resource block (PRB) allocation with at least one enhanced physical downlink control channel (ePDCCH) at a wireless device is disclosed. One method can include a node precoding at least one distributed CCE and at least one localized CCE for the PRB pair. The node can transmit the at least one distributed CCE for transmit diversity using at least two user equipment-specific reference signal (UERS) ports and transmitting the at least one localized CCE in the PRB pair. The at least two UERS ports can be used to transmit two CCEs. | 09-19-2013 |
20130242817 | UPLINK CONTROL CHANNEL RESOURCE MAPPING FOR AN ENHANCED PDCCH IN LTE SYSTEMS - An enhanced physical down link control channel (ePDCCH) for Long Term Evolution (LTE) systems is described that is constructed using enhanced control channel elements (eCCEs). Techniques are also described by which user equipment (UE) may be implicitly allocated uplink resources for transmitting acknowledgements to data received via downlink resources allocated by an ePDCCH. | 09-19-2013 |
20130242885 | ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL (ePDCCH) INTER-CELL INTERFERENCE COORDINATION (ICIC) - Technology for communicating enhanced physical downlink control channels (ePDCCHs) configured for inter-cell interference coordination (ICIC) for a plurality of cells in a physical resource block (PRB) is disclosed. One method can include a node mapping a serving cell control channel element (CCE) in an serving cell ePDCCH in a PRB and a coordination cell CCE in a coordination cell ePDCCH in the PRB. The node can transmit the map of the serving cell CCE and the coordination cell CCE to a wireless device. | 09-19-2013 |
20130242886 | ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL (ePDCCH) WITH PHYSICAL RESOURCE BLOCK (PRB) BUNDLING - Technology for physical resource block (PRB) bundling an enhanced physical downlink control channel (ePDCCH) with a physical downlink shared channel (PDSCH) is disclosed. One method can include a wireless device receiving from a node the ePDCCH in an ePDCCH PRB contiguous in frequency with a PDSCH PRB carrying the PDSCH. The wireless device can PRB bundle the ePDCCH PRB with the PDSCH PRB. | 09-19-2013 |
20130242890 | PHYSICAL UPLINK CONTROL CHANNEL (PUCCH) RESOURCE MAPPING USING AN ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL (ePDCCH) - Technology for physical uplink control channel (PUCCH) resource mapping corresponding to an enhanced physical downlink control channel (ePDCCH) is disclosed. One method can include a node mapping a PUCCH resource n | 09-19-2013 |
20130242947 | DOWNLINK CONTROL INFORMATION (DCI) VALIDATION FOR ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL (ePDCCH) - Technology for downlink (DL) grant validation is disclosed. One method can include a wireless device receiving from a node a downlink grant masked with a cell radio network temporary identifier (C-RNTI) for a resource allocation (RA) including an enhanced physical downlink control channel (ePDCCH) physical resource block (PRB) carrying the downlink grant. The wireless device can validate a downlink control information (DCI) format of the downlink grant. The at least two UERS ports can be used to transmit two CCEs. The wireless device can determine that the downlink grant is received with a non-matching cyclic redundancy check (CRC) when the DCI format is not validated. | 09-19-2013 |
20130243118 | MOBILE DEVICE TRANSMITTER AND METHODS FOR TRANSMITTING SIGNALS IN DIFFERENT SIGNAL DIMENSIONS FOR 3GPP LTE - Embodiments of a mobile device transmitter and methods for transmitting signals in different signal dimensions are generally disclosed herein. The mobile device transmitter comprises a mapper to map a block of two or more input modulation symbols to different signal dimensions comprising two or more spatial dimensions, and linear transform circuitry to perform a linear transform on the block of mapped input modulation symbols to generate a block of preceded complex-valued output symbols such that each output symbol carries some information of more than one input modulation symbol. The mobile device also comprises transmitter circuitry to generate time-domain signals from the blocks of precoded complex-valued output symbols for each of the spatial dimensions for transmission using the two or more antennas. The precoded complex-valued output symbols are mapped to different signal dimensions comprising at least different frequency dimensions prior to transmission. | 09-19-2013 |
20130272132 | SUPPORTED, SELF-OPTIMIZING WIRELESS NETWORKS, OPTIMIZED WITH RESPECT TO ENERGY, MOBILITY, AND CAPACITY - Technology is discussed for self-optimization approaches within wireless networks to optimize networks for energy efficiency, load capacity, and/or mobility, together with new, supporting channel state measurements and handover techniques. New, Channel State Information-Reference Signals (CSI-RSs) for yet-to-be-configured Cell-IDentifications (Cell-IDs) can be used to determine whether adjacent transmission cells can provide coverage for transmission cells that can be switched off for energy efficiency during formation of a Single Frequency Network (SFN). New approaches are also discussed to facilitate mobility within such a network. The new CSI-RSs and mobility approaches can also be used to split up such a SFN when changing load demands so require. Additionally, such new approaches can be used to create a SFN with a common Cell-ID where high mobility is required, such as near a roadway, and to break it up where high capacity is required, such as during a period of traffic congestion. | 10-17-2013 |
20130272182 | D2D CONNECTION RECOVERY SCHEMES - Schemes for recovering D2D connections between terminals (UEs) in an LTE network are described. The schemes may be applied in situations where a D2D connection is established between two UEs but is lost by, for example, one of the UEs entering a sleep state. The schemes may be applied to either centralized or distributed D2D systems. Some of the schemes are eNB-assisted while others are performed solely by the UEs. | 10-17-2013 |
20130272196 | INTERFERENCE NOTIFICATION IN DEVICE-TO-DEVICE COMMUNICATION - Systems and techniques for wireless device-to-device (D2D) communication are provided herein. A D2D group identifier may be included in wireless transmissions within D2D groups. D2D interference mitigation processes may be initiated when a D2D group identifier is detected by a wireless device outside the D2D group. | 10-17-2013 |
20130272214 | MAPPING OF ENHANCED PHYSICAL DOWNLINK CONTROL CHANNELS IN A WIRELESS COMMUNICATION NETWORK - In embodiments, an evolved Node B (eNB) of a wireless communication network may map individual enhanced control channel elements (eCCEs) of a physical resource block (PRB) pair to a plurality of non-continuous enhanced resource element groups (eREGs) of the PRB pair. The eNB may further map the plurality of eREGs to individual antenna ports for transmission to the UE, with individual antenna ports associated with a continuous group of eREGs. The eNB may assign at least a portion of an enhanced physical downlink control channel (ePDCCH) to one or more of the eCCEs for transmission to the UE. Additionally, or alternatively, an eNB may map eCCEs of a plurality of PRB pairs to a plurality of distributed resource block (DRB) pairs. | 10-17-2013 |
20130272262 | MULTI-ACCESS SCHEME AND SIGNAL STRUCTURE FOR D2D COMMUNICATIONS - A signal structure for use in D2D communications is described. In one embodiment, a preamble for automatic gain control at the receiver end is included in the transmitted signal. Techniques for scheduling of D2D transmissions using carrier sensing multiple access (CSMA) and a power control schemes for interference management are also described. | 10-17-2013 |
20130273923 | APPARATUS AND METHOD TO ENABLE DEVICE-TO-DEVICE (D2D) DISCOVERY IN CELLULAR NETWORKS - An apparatus and method of allowing user equipment (UE) to transmit information directly with other user equipment, using a device-to-device (D2D) mode is disclosed herein. A D2D UE (dUE | 10-17-2013 |
20130286997 | WIRELESS COMMUNICATION SYSYTEM WITH COMMON CELL ID - Briefly, in accordance with one or more embodiments, a conventional physical downlink control channel (PDCCH) is transmitted in a first region of a physical downlink control channel structure utilized by a remote radio head that has been assigned a cell identifier that is common to one or more other remote radio heads within the cell, and an enhanced physical downlink control channel (ePDCCH) is transmitted in a second region of the physical downlink control channel structure. | 10-31-2013 |
20130287000 | TECHNIQUES FOR FORMATTING SIGNALS FOR TRANSMISSION USING A WIRELESS NETWORK - Techniques are described for forming signals for transmission to a receiver. Two transmitters can form resource blocks with different Physical Uplink Control Channel (PUCCH) demodulation reference signal (DMRS) patterns that are orthogonal over time and/or frequency to each other. The transmitters can simultaneously transmit the same resource block but with different DMRS patterns. If a receiver is mounted with two antennas, the receiver can utilize a MIMO receiver to differentiate resource blocks from two transmitters. | 10-31-2013 |
20130287139 | SYSTEM AND METHOD OF RANK ADAPTATION IN MIMO COMMUNICATION SYSTEM - An apparatus may include a transmitter arranged to wirelessly transmit channel status reports for channels within a transmission band to a base station and a processor. The apparatus may further include a rank adaptation (RA) module operable on the processor to direct the transmitter to send a multiplicity of sub-band channel quality indicator (CQI) reports, each sub-band CQI report comprising a measurement of a respective sub-band of the transmission band and a multiplicity of rank indicator (RI) reports, where each sub-band CQI report is accompanied by an RI report. The apparatus may further include a digital display arranged to display information transmitted via the base station to the apparatus. Other embodiments are disclosed and claimed. | 10-31-2013 |
20130294390 | SYSTEM AND METHOD OF UPLINK POWER CONTROL IN A WIRELESS COMMUNICATION SYSTEM - An apparatus may include a transceiver operable to receive a downlink message from a base station for a serving cell, the downlink message allocating a set of control parameters. The apparatus may also include a processor circuit communicatively coupled to the transceiver and an uplink power control module operable on the processor circuit to read the set of control parameters, and apply a signal-to-noise-and-interference (SINR) parameter based on the received set of control parameters to determine physical uplink shared channel (PUSCH) power to be applied for a PUSCH transmission. Other embodiments are disclosed and claimed. | 11-07-2013 |
20130301438 | APPARATUS AND METHOD TO ESTABLISH A DEVICE-TO-DEVICE (D2D) CONNECTION IN A 3GPP-LTE NETWORK USING A DISTRIBUTED CHANNEL SCAN - An apparatus and method that allow user equipment (UE) to transmit information directly with other user equipment, using a device-to-device (D2D) mode is disclosed herein. A first D2D UE (dUE | 11-14-2013 |
20130301549 | DOWNLINK CONTROL INDICATION FOR A STAND-ALONE NEW CARRIER TYPE (NCT) - Technology for determining a common search space (CSS) from a physical resource block (PRB) indication for a stand-alone carrier type is disclosed. In an example, a user equipment (UE) configured for determining a common search space (CSS) from a physical resource block (PRB) indication for a stand-alone carrier type can include a processing module to: Determine a PRB set in the CSS from an enhanced physical hybrid automatic repeat request (ARQ) indicator channel (ePHICH) configuration information in a master information block (MIB); and decode an enhanced physical downlink control channel (ePDCCH) or the ePHICH from PRB region candidates in the PRB set. | 11-14-2013 |
20130303167 | COORDINATED DYNAMIC POINT SELECTION (DPS) WITH CELL RANGE EXPANSION IN A COORDINATED MULTIPOINT (CoMP) SYSTEM - Technology for mitigating edge effect interference in a Coordinated MultiPoint (CoMP) system having multiple CoMP clusters is disclosed. In an example, a method can include a macro node transmitting a cell range expansion request to user equipments (UEs) within a cell. A CoMP cluster for nodes within the cell that includes UEs operating with the cell range expansion can be generated. Blanked resources between a plurality of macro nodes for the CoMP clusters in the CoMP system can be coordinated using a muting preference including a blanked resource. | 11-14-2013 |
20130322352 | PUCCH RESOURCE ALLOCATION WITH ENHANCED PDCCH - Embodiments of the present disclosure include methods, apparatuses, and instructions for receiving at a user equipment (UE) of a third generation partnership project (3GPP) network an offset value selected from a plurality of offset values in downlink control information. The UE also receives one or more enhanced control channel elements (eCCEs) of an enhanced physical downlink control channel (ePDCCH). The UE may then determine an allocation of an uplink resource for a transmission on a physical uplink control channel (PUCCH) based at least in part on the index of a first eCCE and the offset value. | 12-05-2013 |
20130324050 | RADIO COMMUNICATION DEVICES AND METHODS FOR CONTROLLING A RADIO COMMUNICATION DEVICE - A radio communication device may be provided. The radio communication device may include: a measurement circuit configured to measure a first reception quality of a first signal from another radio communication device and configured to measure a second reception quality of a second signal from the other radio communication device; a transmitter configured to transmit information related to the measured first reception quality to the other radio communication device; a memory configured to store information related to the transmitted information; a comparison circuit configured to compare information related to the measured second reception quality with the stored information; a determiner configured to determine a quality of the previously transmitted information based on the comparison by the comparison circuit; and the transmitter further configured to transmit to the other radio communication device information indicating the determined quality of the previously transmitted information. | 12-05-2013 |
20130336152 | STRUCTURED CODEBOOK FOR UNIFORM CIRCULAR ARRAY (UCA) - Embodiments of the present disclosure describe method, apparatus, and system configurations that implement or otherwise use a codebook designed for antennas configured in a circular array. A method includes receiving, by user equipment (UE) from an enhanced node B (eNB) station of a wireless communication network, a Channel State Information Reference Signal (CSI-RS) for the UE to perform channel measurements of multiple antennas of the eNB station, wherein the multiple antennas are configured in one or more circular arrays, performing, by the UE, channel measurements of the multiple antennas of the eNB station using the received CSI-RS, and determining, by the UE, a code word based on the channel measurements, the code word being stored in a codebook designed for a circular antenna array. Other embodiments may be described and/or claimed. | 12-19-2013 |
20130344816 | MOBILITY MEASURMENT USING CSI-RS IN ADDITIONAL CARRIER - A system and a method for a mobility measurement in a wireless network comprises determining at a wireless terminal a channel power estimation E | 12-26-2013 |
20140003240 | SUPPORTING MEASURMENTS AND FEEDBACK FOR 3D MIMO WITH DATA TRANSMISSION OPTIMIZATION | 01-02-2014 |
20140016714 | LARGE DELAY CYCLIC DELAY DIVERSITY (CDD) PRECODER FOR OPEN LOOP MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) - A physical channel processor on a wireless device and method for precoding for spatial multiplexing in an open-loop multiple-input multiple-output (MIMO) mobile communication system is disclosed. The method comprises the operation of receiving an input vector block from a layer mapper. The input vector block includes user equipment-specific reference signals (UE-RSs) or data in a physical downlink shared channel (PDSCH). The operation of generating a large delay cyclic delay diversity (CDD) vector block from the input vector block using a precoder configured for large delay CDD on an antenna port follows. The data can be resource element mapped with UE-RSs or channel-state information reference signals (CSI-RSs) in a physical resource block (PRB). | 01-16-2014 |
20140029533 | UPLINK CONTROL INFORMATION TRANSMISSION WITH LARGE NUMBER OF BITS - Embodiments of the present disclosure describe devices, methods, computer-readable media and systems configurations for transmitting periodic channel state information having large payload sizes. Other embodiments may be described and claimed. | 01-30-2014 |
20140036876 | HIGH EFFICIENCY DISTRIBUTED DEVICE-TO-DEVICE (D2D) CHANNEL ACCESS - Techniques for facilitating device-to-device (D2D) communications using a high efficiency distributed channel access scheme are generally described herein. In some examples, a communication zone allocated for wireless D2D communications is divided into resource contention and scheduled transmission portions. The resource contention segment may be used to transmit a request message from a transmitting device to a receiving device (a request-to-send message), and transmit a response to the request message from the receiving device to the transmitting device (a clear-to-send message). The response can indicate a time for the data transmission to occur during the scheduled transmission segment. During the scheduled transmission segment, the scheduled data transmission and other D2D data transmissions among the various devices will be performed. In further examples, contention access techniques may be used during the resource contention segment to manage access to the resource channel. | 02-06-2014 |
20140044070 | ENHANCED NODE B AND METHOD OF TRANSMITTING PHYSICAL-DOWNLINK CONTROL CHANNELS (PDCCHS) IN A LTE-A SYSTEM - Embodiments of an eNB and method of transmitting PDCCHs are generally described herein. In some embodiments, the eNB may be configured to transmit PDCCHs that are based on a UE-specific reference signal (i.e., a UE-RS). In these embodiments, the UEs may be able to demodulate their PDCCH using a demodulation reference signal (DM-RS) that is specific to the UE (e.g., instead of a common reference signal). The PDCCHs disclosed herein may be suitable the Uu interface of an LTE-A system. | 02-13-2014 |
20140056279 | MAPPING AN ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL - Technology for mapping an enhanced physical downlink control channel to physical resource blocks in a radio frame is disclosed. One method comprises mapping modulated symbols in the ePDCCH to at least one control channel element. The at least one control channel element may be mapped to resource elements located in a plurality of distributed physical resource blocks in a subframe, wherein each resource block is in a distributed resource block group and is separated by at least one additional resource block in the subframe. The mapping may also be to resource elements distributed in a single resource block in the subframe, wherein the control channel element is mapped to be distributed in frequency and time relative to other mapped resource elements in the single resource block and the single resource block belongs to a localized resource block group. | 02-27-2014 |
20140064201 | APPARATUSES AND METHODS FOR CSI-RS CONFIGURATION IN DISTRIBUTED RRH SYSTEMS - Apparatuses and methods for channel state information reference signal (CSI-RS) configuration in distributed remote radio head (RRH) systems are described. A transmission point selection module can receive a user equipment (UE) signal via a transmission point from a plurality of transmission points sharing a single cell identification. A downlink transmission point can be selected based on the UE signal. The UE can then be configured to report CSI-RS measurements for the selected downlink transmission point. | 03-06-2014 |
20140092821 | DETERMINATION OF ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL CANDIDATES IN A WIRELESS COMMUNICATION NETWORK - In embodiments, an evolved Node B (eNB) of a wireless communication network may configure an enhanced physical downlink control channel (EPDCCH) physical resource block (PRB) set for a user equipment (UE). The EPDCCH-PRB set may include a plurality of PRB-pairs. The EPDCCH-PRB set may further include a plurality of enhanced resource element groups (EREGs) organized into localized enhanced control channel elements (ECCEs) having EREGs of the same PRB-pair and distributed ECCEs having EREGs of different PRB-pairs. In some embodiments, the eNB may determine a set of distributed EPDCCH candidates for the UE from the EPDCCH-PRB set, wherein the individual distributed EPDCCH candidates include one or more of the distributed ECCEs, and wherein the set of distributed EPDCCH candidates includes at least one EREG from each of the plurality of localized ECCEs. Other embodiments may be described and claimed. | 04-03-2014 |
20140092829 | SYSTEMS AND METHODS FOR SEMI-PERSISTENT SCHEDULING OF WIRELESS COMMUNICATIONS - Methods, systems, and devices for transmission and reception of SPS communications are disclosed herein. User equipment (UE) is configured to receive, in a first subframe, a physical downlink control channel or enhanced physical downlink control channel (PDCCH/EPDCCH) corresponding to semi-persistent scheduling (SPS) activation. The PDCCH/EPDCCH conveys a value of nSCID. The UE configures, based on the SPS activation, a downlink (DL) assignment in a second subframe for receiving an SPS physical downlink shared channel (PDSCH) without a corresponding PDCCH/EPDCCH. The UE determines a reference signal sequence corresponding to the SPS PDSCH using n | 04-03-2014 |
20140092830 | BLIND DECODING FOR AN ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL (EPDCCH) - Technology for blind decoding downlink control information (DCI) from an enhanced physical downlink control channel (EPDCCH) is disclosed. In an example, a user equipment (UE) can include a processor configured to: Recursively attempt to decode the DCI from enhanced control channel elements (ECCE) of the EPDCCH from physical resource block (PRB) region candidates in a PRB set using a selected set of enhanced resource element group (EREG) index maps for the ECCE until the DCI is successfully decoded; and decode the DCI with an EREG index map associated with a same aggregation level used to encode the DCI. Each EREG index map can be configured for a different aggregation level (AL). | 04-03-2014 |
20140105109 | Joint Transmission in a Wireless Network - A system for receiving joint transmission wireless signals may include a transceiver to receive a plurality of colliding wireless signals. One of the wireless signals may include reference signal data while another of the wireless signals may include user data. The reference signal data may be combined with the user data into a superimposed signal. The reference signal data may be filtered out from the superimposed data, and the user data may be decoded. | 04-17-2014 |
20140112406 | TECHNOLOGY FOR CSI FEEDBACK IN A MIMO COMMUNICATION SYSTEM - Technology for channel state information (CSI) feedback in a multiple-input multiple-output (MIMO) communication system is disclosed. A method comprises receiving, at a mobile device, a dynamic channel state information (CSI) feedback switch signal from a transmission station that identifies a selected CSI feedback state for the mobile device. A process for selecting a precoding matrix indicator (PMI) and a rank indicator is identified based on the CSI feedback switch signal as either a process configured for MU-MIMO reception or single-user (SU) MIMO reception of a downlink signal at the mobile device. | 04-24-2014 |
20140126487 | MAPPING AN ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL - Technology for mapping an enhanced physical downlink control channel to physical resource blocks in a radio frame is disclosed. One method comprises mapping modulated symbols in the ePDCCH to at least one control channel element. The at least one control channel element can be mapped to resource elements located in a plurality of distributed physical resource blocks in a subframe, wherein each resource block is separated by at least one additional resource block in the subframe. The mapping can also be to resource elements distributed in a single resource block in the subframe, wherein the control channel element is mapped to be distributed in frequency and time relative to other mapped resource elements in the single resource block. | 05-08-2014 |
20140133445 | ENHANCED NODE B AND METHOD FOR PRECODING WITH REDUCED QUANTIZATION ERROR - Embodiments of an enhanced Node B (eNB) and method for precoding with reduced quantization error are generally described herein. In some embodiments, first and second precoding-matrix indicator (PMI) reports may be received on an uplink channel and a single subband precoder matrix may be interpolated from precoding matrices indicated by both the PMI reports. Symbols for multiple-input multiple output (MIMO) beamforming may be precoded using the interpolated precoder matrix computed for single subband for a multiple user (MU)-MIMO downlink orthogonal frequency division multiple access (OFDMA) transmission. In some embodiments, each of the first and second PMI reports includes a PMI associated with a same subband that jointly describes a recommended precoder. | 05-15-2014 |
20140140304 | CONTENTION-BASED TRANSMISSION WITH CONTENTION-FREE FEEDBACK FOR REDUCING LATENCY IN LTE ADVANCED NETWORKS AND ENHANCED PUCCH - Methods for contention-based transmission with contention-free feedback for reduced latency in LTE Advanced networks and an enhanced PUCCH are generally disclosed herein. User equipment (UE) may transmit a contention sequence on a physical uplink control channel (PUCCH) to an enhanced-Node B (eNB) and may concurrently transmit data requesting uplink resources on a physical uplink shared channel (PUSCH) to the eNB. The contention sequence is transmitted on the PUCCH in accordance with a format that is assigned by the eNB. The contention sequence is either randomly selected by the UE or assigned by the eNB. When the contention sequence and data are not successfully received by the eNB, the UE may fall back to a more conventional random access channel (RACH) procedure for uplink resource allocation. | 05-22-2014 |
20140146752 | LAYER SHIFTING IN OPEN LOOP MULTIPLE-INPUT, MULTIPLE-OUTPUT COMMUNICATIONS - Embodiments of the present disclosure describe methods, apparatuses, and systems related to use of interphase/quadrature component layer shifting in open loop multiple-input, multiple-output communications. Other embodiments may be described and/or claimed. | 05-29-2014 |
20140169298 | DEVICE-TO-DEVICE DISTRIBUTED SCHEDULING - A system and method for distributed scheduling of transmissions between device-to-device (D2D) communications is disclosed. The distributed scheduling method employs a distributed scheduling structure in which device identifiers rather than connection identifiers are used to enable scheduling of a D2D data transfer between devices in a wireless neighborhood. The novel distributed scheduling structure is scalable to a larger number of D2D devices than is feasible with a connection ID-based tone matrix. | 06-19-2014 |
20140177541 | PDSCH RESOURCE ELEMENT MAPPING FOR THREE-CELL JOINT TRANSMISSION - A PDSCH resource element mapping method is used for joint transmissions. The method solves a problem of colliding resource elements in joint transmissions, due to interference caused when PDSCH resource elements are transmitted in the resource block of one cell and cell-specific reference signals (CRSs) are transmitted in the same location of the resource block of an adjacent cell. The method is particularly beneficial for coordinated multipoint (CoMP) transmissions. The PDSCH resource element mapping method employs one of three schemes for transmitting the collided resource elements, with minimal interference. In the first scheme, one PDSCH symbol is transmitted over three consecutive CRS-collided PDSCH resource elements. In the second scheme, two PDSCH symbols are transmitted over three consecutive CRS-collided PDSCH resource elements. In a third scheme, CRS-collided resource elements are transmitted using a lower modulation order than is specified by the modulation and coding scheme. | 06-26-2014 |
20140241278 | PUCCH RESOURCE ALLOCATION WITH ENHANCED PDCCH - Embodiments of the present disclosure include methods, apparatuses, and instructions for receiving at a user equipment (UE) of a third generation partnership project (3GPP) network an offset value selected from a plurality of offset values in downlink control information. The UE also receives one or more enhanced control channel elements (eCCEs) of an enhanced physical downlink control channel (ePDCCH). The UE may then determine an allocation of an uplink resource for a transmission on a physical uplink control channel (PUCCH) based at least in part on the index of a first eCCE and the offset value. | 08-28-2014 |
20140247860 | CODEBOOK AND CODEBOOK SEARCH - Briefly, in accordance with one or more embodiments, a codebook used to provide a precoding matrix indicator and/or channel state information comprises one or more rank-1 codewords and at least one or more rank-2 codewords exhibiting a nesting property with the rank-1 codewords, and one or more rank-2 codewords not exhibiting a nesting property with the rank-1 codewords. Further, the rank-1 codewords may include at least some Discrete Fourier Transform (DFT) vectors, and at least some vectors that are optimized for a cross polarize array of antennas if the array of antennas is cross polarized. The codebook may be utilized for single-user multiple-input, multiple-output (SU-MIMO) or multi-user multiple-input, multiple-output (MU-MIMO). | 09-04-2014 |
20140254504 | DOWN-SAMPLING OF CELL-SPECIFIC REFERENCE SIGNALS (CRS) FOR A NEW CARRIER TYPE (NCT) - Technology for selecting physical resource blocks (PRB) for cell-specific reference signal (CRS) transmission for a new carrier type (NCT) is disclosed. In an example, device operable in an evolved Node B (eNB) to select physical resource blocks (PRB) for cell-specific reference signal (CRS) transmission for a new carrier type (NCT) can include computer circuitry configured to: Determine a frequency bandwidth for the NCT; and select a CRS pattern of PRBs for a transmission of the CRS in the frequency bandwidth, wherein the frequency bandwidth includes PRBs with CRS and PRBs without CRS. | 09-11-2014 |
20140269459 | USER EQUIPMENT WITH REDUCED POWER CONSUMPTION OPERATIONAL MODES - A user equipment (UE) power-cycles UE transmission modem components to reduce overall UE power consumption. For example, multiple HARQ ACK/NACK feedback bits are aggregated for a predetermined number of consecutive DL subframes, and then the feedback is transmitted in a single dedicated UL subframe so that a transmitter and power amplifier may be temporarily turned off (State 3) to reduce power consumption in the UE. | 09-18-2014 |
20140295858 | USER EQUIPMENT AND METHOD FOR DISTRIBUTED CHANNEL ACCESS FOR D2D COMMUNICATIONS - Embodiments of a system and method for distributed channel access for device-to-device (D2D) communication in a wireless network are generally described herein. User equipment (UE) may transmit a connection identifier (CID) code at a beginning of a contention window to request channel access for a D2D transmission to a receiving device. Links for D2D transmissions from a transmitting device to a receiving device are identified by a CID that is mapped to a CID code. The UE may receive a bandwidth grant from the receiving device during the contention window, along with bandwidth grants for other CIDs, in an order based on a priority level of the CID. The UE may transmit data after reception of the bandwidth grants in time-frequency resources indicated in an associated one of the bandwidth grants. In some embodiments, spatial-reuse and variable resource size allocation are supported. | 10-02-2014 |
20140348077 | CONTROL CHANNEL DESIGN FOR NEW CARRIER TYPE (NCT) - Technology for allocating at least one physical resource block (PRB) for an Enhanced Physical Hybrid-ARQ Indicator Channel (EPHICH) transmission for a New Carrier Type (NCT) is disclosed. In one method, a number of bits associated with channel coding for an acknowledgement (ACK) or negative acknowledgement (NACK) in the EPHICH transmission is determined. A plurality of modulation symbols for each ACK or NACK in the EPHICH transmission is generated based in part on the number of bits associated with the ACK or NACK. The plurality of modulation symbols are mapped as EPHICH quadrants in one or more resource element blocks (REGs), wherein the EPHICH quadrants are mapped to a plurality of physical resource blocks (PRBs) allocated for EPHICH to increase frequency diversity gain. | 11-27-2014 |
20140355529 | SYSTEM AND METHOD OF MANAGING WIRELESS COMMUNICATIONS WITH MULTIPLE TRANSMISSION POINTS - An apparatus includes a processor a channel state information (CSI) module operative on the processor to evaluate channel state information for a multiplicity of transmission points and to allocate a selection of channel state information reference signals (CSI-RS) to an uplink sub-frame allotted for transmitting channel quality/precoding matrix index/rank indicator (CQI/PMI/RI) information to a transmission point. The apparatus may further include a wireless transceiver operative to transmit the selection of CSI-RS in the uplink sub-frame to the transmission point in a wireless network, and receive information from the transmission point in response to the CSI-RS and a digital display operative to present the information received from the transmission point. | 12-04-2014 |
20140355531 | ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL SCRAMBLING AND DEMODULATION REFERENCE SIGNAL SEQUENCE GENERATION - Methods, apparatuses, and systems are described to provide enhanced physical downlink control channel scrambling and demodulation reference signal sequence generation. | 12-04-2014 |
20140355705 | USER EQUIPMENT AND METHODS FOR CODEBOOK SUBSAMPLING FOR ENHANCED 4TX CODEBOOKS - Embodiments of user equipment (UE) and methods for codebook subsampling for enhanced 4TX codebooks in 3GPP LTE wireless networks are generally described herein. In some embodiments, a physical uplink control channel (PUCCH) is configured for transmission of channel state information (CSI) feedback including a rank indicator (RI) and a precoding matrix (W1). The rank indicator (RI) and a precoding matrix (W1) are jointly encoded and codebook subsampling is performed for the enhanced 4Tx codebook for at least one of: PUCCH report type 5 (RI/1st PMI) in PUCCH 1-1 submode 1; PUCCH report type 2c (CQI/1st PMI/2nd PMI) in PUCCH 1-1 submode 2; and PUCCH report type 1a (subband CQI/2nd PMI) in PUCCH 2-1. | 12-04-2014 |
20140365405 | Context Aware Information Prediction - In some embodiments, instead of relying only on information about the characters that are being entered to predict what data is intended to be entered into a user interface, information about the user interface itself may be used to help predict what data may be entered. For example, attributes that are associated with a text entry box can be used to provide more accurate predictions of what data a user intends to enter. | 12-11-2014 |
20150016311 | PHYSICAL UPLINK CONTROL CHANNEL (PUCCH) RESOURCE ALLOCATION (RA) FOR A HYBRID AUTOMATIC RETRANSMISSION RE-QUEST-ACKNOWLEDGE (HARQ-ACK) TRANSMISSION - Technology to provide conditional physical uplink control channel (PUCCH) resource allocation in time division duplex (TDD) for a hybrid automatic retransmission request-acknowledge (HARQ-ACK) transmission in a subframe n is disclosed. In an example, a user equipment (UE) can include computer circuitry configured to: Receive a downlink control channel within a prior specified subframe, wherein the prior specified subframe occurs in time before the subframe n; recognize a downlink control channel type received within the prior specified subframe is a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (EPDCCH); determine a PUCCH resource for the HARQ-ACK transmission using a lowest control channel element (CCE) index of the PDCCH when the received downlink control channel type is the PDCCH; and determine the PUCCH resource for the HARQ-ACK transmission using a lowest enhanced CCE (ECCE) index of the EPDCCH when the received downlink control channel type is the EPDCCH. | 01-15-2015 |
20150024749 | USER EQUIPMENT AND METHOD FOR PICO-CELL ATTACHMENT AND ATTACHMENT INHIBITING - Embodiments of user equipment (UE) and method for pico-cell attachment and attachment inhibiting are generally described herein. In some embodiments, the UE may determine an angle threshold, calculate an angle between a moving direction and a direction toward the target pico eNB, permit pico-cell attachment if the calculated angle is less than or equal to the angle threshold and inhibit pico-cell attachment when the calculated angle is greater than the angle threshold. In some angle-limitation embodiments, the UE may be configured to receive the angle threshold that is broadcasted by a target pico eNB using the SIBs which may be transmitted on the DL-SCH. In some minimum-distance threshold embodiments, the UE is configured to calculate the angle threshold from a distance threshold and a distance to a target pico eNB. | 01-22-2015 |
20150029875 | DOWNTILT SELECTION IN A FULL DIMENSIONAL MULTIPLE-INPUT MULTIPLE-OUTPUT SYSTEM - A technology for an enhanced node B (eNode B) in a cellular network that is operable to determine downtilt using full dimensional (FD) multiple-input multiple-output (MIMO). A plurality of orthogonal frequency division multiple access (OFDMA) signals can be transmitted, wherein each transmitted OFDMA signal is transmitted with a selected downtilt angle from a two dimensional antenna array of the eNode B. Reference signal received power (RSRP) feedback information can be received from a UE for each of transmitted OFDMA signals at the selected downtilt angles. Received signal strength indicator (RSSI) feedback information can be received from the UE. A reference signal received quality (RSRQ) can be calculated for each of the selected antennas angles using the RSRP feedback information and the RSSI feedback information. A downtilt angle can be selected for transmitting data from the eNode B with a highest signal to interference plus noise ratio (SINR). | 01-29-2015 |
20150029919 | TECHNIQUES FOR EFFICIENT SMALL CELL DISCOVERY - Techniques for efficient small cell discovery are described. In one embodiment, for example, an evolved node B (eNB) may comprise logic, at least a portion of which is in hardware, the logic to determine a discovery signal transmission schedule for a series of radio frames based on a discovery signal muting pattern specifying at least one discovery-muted radio frame among the series of radio frames, and a transceiver to transmit at least one primary synchronization signal (PSS) and at least one secondary synchronization signal (SSS) during the series of radio frames according to the discovery signal transmission schedule. Other embodiments are described and claimed. | 01-29-2015 |
20150029957 | UPLINK COMMUNICATION TECHNIQUES FOR NON-IDEAL BACKHAUL SCENARIOS - Uplink communication techniques for non-ideal backhaul scenarios are described. In one embodiment, for example, user equipment (UE) may comprise logic, at least a portion of which is in hardware, the logic to receive an uplink (UL) communication process configuration message identifying a configured UL communication process for the UE, the UL communication process configuration message comprising a cell identifier and one or more configuration information elements (IEs), each configuration IE comprising configuration information for UL communications on the part of the UE, the logic to send a UL message based on the configuration information comprised in at least one of the configuration IEs. Other embodiments are described and claimed. | 01-29-2015 |
20150085722 | PHYSICAL UPLINK CONTROL CHANNEL (PUCCH) RESOURCE ALLOCATION (RA) FOR A HYBRID AUTOMATIC RETRANSMISSION RE-QUEST-ACKNOWLEDGE (HARQ-ACK)TRANSMISSION - Technology to provide physical uplink control channel (PUCCH) resource allocation in time division duplex (TDD) for a hybrid automatic retransmission request-acknowledge (HARQ-ACK) transmission in a subframe n is disclosed. In an example, a user equipment (UE) can include first circuitry configured to detect a downlink control channel within a prior specified subframe that is received in time before the subframe n. The UE can include second circuitry configured to: determine that the downlink control channel detected within the prior specified subframe is one of a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (EPDCCH); and determine one of a legacy PUCCH resource for the HARQ-ACK transmission when the downlink control channel detected within the prior specified subframe is the PDCCH or an enhanced PUCCH resource for the HARQ-ACK transmission when the downlink control channel detected within the prior specified subframe is the EPDCCH. | 03-26-2015 |