Patent application number | Description | Published |
20080225743 | REVERSE-LINK QUALITY-OF-SERVICE INFORMATION IN DATA PACKET HEADER - Quality-of-service information provides details related to data packets, including delay information. A data packet header may be analyzed to determine a portion capable of retaining quality-of-service information. Quality-of-service information may be compressed and placed into the identified portion. The header may be transmitted to a base station, where the quality-of-service information is decompressed, read, and modification of operations occurs as a function of the quality-of-service information. | 09-18-2008 |
20090238141 | METHOD AND APPARATUS FOR HANDOVER IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described that facilitate system frame number (SFN) indication and identification during a random access procedure (e.g., associated with a handover). As described herein, a target cell can configure one or more Random Access Responses (RARs) designated for transmission to a terminal during the access phase of a handover to include the SFN of the target cell. Techniques are further described herein by which the target cell can include SFN information in a sub-header associated with a RAR, in the payload of a RAR, and/or in other appropriate manners. In addition, the target cell can configure one or more flags of the RAR to indicate the presence of SFN information. Upon receiving a RAR with embedded SFN information, a terminal can utilize the SFN for operations such as frequency hopping or uplink resource configuration as described herein. | 09-24-2009 |
20100158176 | CHANNEL ESTIMATION FOR WIRELESS COMMUNICATION - Techniques for deriving channel estimates with different channel estimation filters are described. In one scheme, a filter selection metric is determined for a signal to be recovered, a channel estimation filter is selected based on the filter selection metric, and a channel estimate is derived with the selected channel estimation filter. In another scheme, a first channel estimate is derived with a first channel estimation filter having a first filter response, a first signal is recovered with the first channel estimate, and interference due to the first signal is estimated and removed. A second channel estimate is derived with a second channel estimation filter having a second filter response that is different from the first filter response. | 06-24-2010 |
20100309877 | RANDOM ACCESS SIGNALING TRANSMISSION FOR SYSTEM ACCESS IN WIRELESS COMMUNICATION - Techniques for transmitting random access signaling for system access are described. In an aspect, random access signaling may be sent based on at least one transmission parameter having different values for different user equipment (UE) classes. At least one parameter value may be determined based on a particular UE class, and the random access signaling may be sent based on the determined parameter value(s). The random access signaling may be a random access preamble, and the at least one transmission parameter may include a target SNR, a backoff time, and/or a power ramp. The random access preamble may then be sent based on a target SNR value, a power ramp value, and/or a backoff time value for the particular UE class. In another aspect, a message for system access may be sent based on a power control correction received in a random access response for the random access preamble. | 12-09-2010 |
20110026653 | CHANNEL ESTIMATION FOR WIRELESS COMMUNICATION - Techniques for deriving channel estimates with different channel estimation filters are described. In one scheme, a filter selection metric is determined for a signal to be recovered, a channel estimation filter is selected based on the filter selection metric, and a channel estimate is derived with the selected channel estimation filter. In another scheme, a first channel estimate is derived with a first channel estimation filter having a first filter response, a first signal is recovered with the first channel estimate, and interference due to the first signal is estimated and removed. A second channel estimate is derived with a second channel estimation filter having a second filter response that is different from the first filter response. | 02-03-2011 |
20110194527 | FREQUENCY AND TIME DOMAIN RANGE EXPANSION - For range expansion, a determination to enter range expansion may be made based on a signal strength differential for user equipment (UE) communications between a first class of base stations and a second class of base stations. If the signal strength differential is beyond a certain threshold, range expansion may be implemented. In range expansion, a signal is transmitted, on a resource coordinated with at least one of the first class of base stations, from one of the second class of base stations to the UE which could experience dominant interference from one of the first class of base stations if coordination were not performed. Transmission power may be reduced from one of the first class of base stations on that resource. The second signal may be transmitted within the region of the Physical Downlink Shared Channel. | 08-11-2011 |
20110249642 | ADAPTIVE RESOURCE NEGOTIATION BETWEEN BASE STATIONS FOR ENHANCED INTERFERENCE COORDINATION - Methods and apparatus for supporting adaptive resource negotiation between evolved node Bs (eNBs) for enhanced inter-cell interference coordination (eICIC) are provided. This resource negotiation may occur via a network backhaul between the eNBs or, in some cases, using over-the-air messages (OAMs). For certain aspects, a first eNB may propose its adaptive resource partitioning information (ARPI) to a second eNB, where the second eNB may accept or reject the proposed resource partitioning. If the second eNB accepts the proposed partitioning, the second eNB may schedule resources, such as subframes, based on the accepted partitioning. | 10-13-2011 |
20110250899 | UPLINK POWER CONTROL IN LONG TERM EVOLUTION NETWORKS - A method for power control in a long term evolution (LTE) network is disclosed and includes configuring a user equipment (UE) with a plurality of transmit power levels where each transmit power level corresponds to a subframe type. A first power level is used in subframes protected by cooperative coordination between base stations. A second power level corresponds to unprotected subframes. The method also includes scheduling the UE to transmit in accordance with the configured transmit power levels. | 10-13-2011 |
20110250919 | CQI ESTIMATION IN A WIRELESS COMMUNICATION NETWORK - Techniques for estimating and reporting channel quality indicator (CQI) are disclosed. Neighboring base stations may cause strong interference to one another and may be allocated different resources, e.g., different subframes. A UE may observe different levels of interference on different resources. In an aspect, the UE may determine a CQI for resources allocated to a base station and having reduced or no interference from at least one interfering base station. In another aspect, the UE may determine multiple CQI for resources of different types and associated with different interference levels. For example, the UE may determine a first CQI based on at least one first subframe allocated to the base station and having reduced or no interference from the interfering base station(s). The UE may determine a second CQI based on at least one second subframe allocated to the interfering base station(s). | 10-13-2011 |
20110255468 | ENHANCING UPLINK COVERAGE IN INTERFERENCE SCENARIOS - A method for wireless communication in a Long Term Evolution (LTE) network includes transmitting a request, from a first evolved Node B (eNodeB) of the LTE network to a second eNodeB of the LTE network, for the second eNodeB to yield a bundles of non-consecutive subframes. The method also includes configuring a User Equipment (UE), which is associated with the first eNodeB and experiencing interference from the second eNodeB, for uplink transmission in the plurality of bundles of non-consecutive subframes. | 10-20-2011 |
20110286407 | SYSTEMS AND METHODS FOR ENHANCING UPLINK COVERAGE IN INTERFERENCE SCENARIOS - A method and apparatus are for communication in a wireless network in which a User Equipment (UE) associated with a first evolved Node B (eNB) experiences interference from a second eNB. The method includes negotiating by the first eNB of the wireless network with a second eNB of the wireless network for a partitioning of subband resources on an uplink. A first subset of subband resources is assigned to the first eNB, and a second subset of subband resources is assigned to the second eNB. A method and apparatus are for communication in a wireless network. The method includes decoding a downlink control channel received during a protected downlink subframe to determine an uplink subframe n containing a protected subband for uplink transmission. The method also includes transmitting data during the uplink subframe n on the protected subband. | 11-24-2011 |
20120087261 | DYNAMIC SWITCHING BETWEEN COMMON REFERENCE SIGNAL INTERFERENCE CANCELATION AND RESOURCE ELEMENT PUNCTURING IN A CO-CHANNEL HETEROGENEOUS NETWORK - Communication in a dominant interference scenario may be supported by performing inter-cell interference coordination (ICIC). Resource coordination/partitioning may be performed to allocate resources to a serving Node B located near the vicinity of a strong interfering Node B. The interfering Node B may avoid transmitting on the allocated/protected resources, possibly except for a common reference signal (CRS). A UE can then communicate with the serving Node B on the protected resources in the presence of the interfering Node B and may observe no interference (possibly except for the CRS) from the interfering Node B. When CRS tones of an interferer may collide with control/data tones of a serving cell, CRS interference cancellation (CRS IC) or puncturing of interfered resource elements (REs) may be appropriate. Certain aspects of the present disclosure provide techniques, where the UE may dynamically switch between CRS IC and RE puncturing based on certain parameters. | 04-12-2012 |
20120281588 | METHODS AND APPARATUS FOR UPLINK AND DOWNLINK INTER-CELL INTERFERENCE COORDINATION - A method for inter-cell interference coordination (ICIC) by a home evolved NodeB (HeNB) is described. A portion of bandwidth is reserved for a user equipment (UE). Notification of the reserved portion of bandwidth is sent to at least one potentially interfering evolved NodeB (eNB). A data exchange is performed with the UE using the reserved portion of bandwidth. Notification is sent to the potentially interfering eNBs releasing the reserved portion of bandwidth. | 11-08-2012 |
20130016630 | BEACONS FOR USER EQUIPMENT RELAYS - Certain aspects of the present disclosure provide methods and apparatus for detecting user equipment (UE) relays using beacons (whether in-band or out-of-band) or other mechanisms. One method generally includes determining an identifier indicative of a UE functioning as a relay and transmitting a broadcast signal including the identifier. Another method generally includes receiving, at a UE functioning as a relay, first broadcast signals at a first interval from an apparatus serving the UE; and transmitting second broadcast signals at a second interval, wherein the second broadcast signals are the same type as the first broadcast signals and wherein the second interval is greater than the first interval. | 01-17-2013 |
20130021932 | SLEEP MODE FOR USER EQUIPMENT RELAYS - Certain aspects of the present disclosure provide methods and apparatus for subframe muting and/or discontinuous reception (DRX) mode related to sleep mode for user equipment (UE) relays. One method generally includes measuring, at a UE functioning as a relay (i.e., a UE relay), signals of one or more other UEs functioning as relays during one or more particular subframes and reporting the measurements of the signals to an apparatus. Another method generally includes determining, at a first UE functioning as a relay, that no UEs are being served by the first UE; based on the determination, increasing an interval between broadcast signals; and transmitting the broadcast signals according to the increased interval. | 01-24-2013 |
20130077586 | SYSTEMS AND METHODS FOR OVER THE AIR LOAD INDICATOR FOR WIRELESS SCHEDULING - Systems and methods for facilitating inter-cell interference coordination using load indication are described. A UE may receive load indicator signals from a plurality of base stations in adjacent cells and determine, based at least in part on the load indicator signals, a transmit power metric. The transmit power metric may be provided to a serving base station, which may allocate uplink resources based on the transmit power metric. Additional information related to receiver sensitivity and/or path loss may be used to determine the transmit power metric. | 03-28-2013 |
20130176934 | LONG TERM EVOLUTON (LTE) USER EQUIPMENT RELAYS HAVING A LICENSED WIRELESS OR WIRED BACKHAUL LINK AND AN UNLICENSED ACCESS LINK - Certain aspects of the present disclosure provide methods and apparatus for employing relaying devices, such as Long Term Evolution (LTE) user equipment (UE) relays, having a licensed wireless or wired backhaul link and an unlicensed access link. One method generally includes receiving, at a first device, data from a first apparatus via a first carrier frequency in a licensed spectrum, wherein the first device comprises a relaying device, and relaying the data to a second apparatus via a second carrier frequency in an unlicensed spectrum. In this manner, wireless communication systems with relaying devices may achieve better spectral efficiency in unlicensed access links. | 07-11-2013 |
20130195043 | REGIONAL AND NARROW BAND COMMON REFERENCE SIGNAL (CRS) FOR USER EQUIPMENT (UE) RELAYS - Certain aspects of the present disclosure relate to techniques for assigning resources for common reference signal (CRS) transmissions from user equipment (UE) relays. Aspects of the present disclosure provide techniques to use minimum possible resources for transmission of CRS in an attempt to reduce interference, reduce power consumption while providing appropriate reference for channel measurement and demodulation. In an aspect, a wireless node (e.g., a UE relay station) may determine resources for transmission of CRS in a subframe based, at least in part, on a type of one or more channels to be transmitted in the subframe, and may transmit the CRS using the determined resources. | 08-01-2013 |
20130223373 | METHODS AND APPARATUS FOR FACILITATING INTER-CELL INTERFERENCE COORDINATION VIA OVER THE AIR LOAD INDICATOR AND RELATIVE NARROWBAND TRANSMIT POWER - Systems and methods for facilitating inter-cell interference coordination using resource partitioning are described. A UE may receive or determine information related to received interference and/or future scheduling. The information may be communicated to a serving base station, which may use the information to allocate uplink or downlink resources between cells. The uplink and/or downlink resource may be partitioned in subbands to mitigate interference from adjacent network nodes. The eNBs may communicate, such as directly, via a backhaul connection, and/or between UEs to configure interference coordination and signaling. | 08-29-2013 |
20130229933 | HETEROGENEOUS NETWORK (HETNET) USER EQUIPMENT (UE) RADIO RESOURCE MANAGEMENT (RRM) MEASUREMENTS - Methods and apparatus for performing radio resource management (RRM) measurements in a heterogeneous network (HetNet) are provided in an effort to prevent failure of RRM measurement procedures in a dominant interference scenario. Several alternatives are provided for determining particular resources (e.g., subframes) to use for performing the RRM measurements, wherein the particular resources are based on cooperative resource partitioning between cells of the HetNet, wherein the cells may be of different types (e.g., macro, pico, or femto cells). These alternatives include, for example: (1) intra-frequency or intra-RAT (radio access technology) alternatives, which may involve transmitting resource partitioning information (RPI) in or deriving non-serving cell RPI based on the serving cell's RPI, as well as (2) inter-frequency or inter-RAT alternatives, where the RRM measurements may be performed during a measurement gap. | 09-05-2013 |
20130244678 | METHODS AND APPARATUS FOR FACILITATING INTER-CELL INTERFERENCE COORDINATION VIA OVER THE AIR LOAD INDICATOR AND RELATIVE NARROWBAND TRANSMIT POWER - Systems and methods for facilitating inter-cell interference coordination using resource partitioning are described. A UE may receive or determine information related to received interference and/or future scheduling. The information may be communicated to a serving base station, which may use the information to allocate uplink or downlink resources between cells. The uplink and/or downlink resource may be partitioned in subbands to mitigate interference from adjacent network nodes. The eNBs may communicate, such as directly, via a backhaul connection, and/or between UEs to configure interference coordination and signaling. | 09-19-2013 |
20130250913 | COOPERATION AND OPERATION OF MACRO NODE AND REMOTE RADIO HEAD DEPLOYMENTS IN HETEROGENEOUS NETWORKS - A method, an apparatus, and a computer program product for wireless communication are provided for separating control transmissions and data transmissions within the coverage area of a plurality of transmission/reception points or points that are geographically displaced, the plurality of points comprising a macro node and a plurality of remote radio heads (RRHs) coupled to the macro node. Separating control transmissions and data transmissions in the macro node/RRH configuration may allow UEs to be associated with one set of transmission points for data transmissions and the same set or a different set of transmission points for common control signaling. Separating control transmissions and data transmissions may also allow for faster reconfiguration of antenna ports used for UE data transmission compared with reconfiguration via a handover process. | 09-26-2013 |
20130258919 | FLEXIBLE DTX AND DRX IN A WIRELESS COMMUNICATION SYSTEM - A data traffic responsive battery-saving approach for a wireless user equipment (UE) device such as an data packet capable cellphone incorporates flexible discontinuous transmission and reception (DTX-DRX) when in Long Term Evolution (LTE) active mode as dictated by an evolved radio access network (RAN) such as an evolved base node (eNode B). A UE device requests are made on unsynchronized random access channel (RACH). Lengthening a duration of DRX and reducing requirements for synchronization uplink transmissions results in power savings of up to 75%, as well as creating opportunities for reducing interference and for allocating additional time slots for data. This power savings is compatible with other downlink scheduling proposals, with control channel-less Voice-over-IP (VoIP), and need not target those UE devices in had radio conditions. Legacy UE devices that can interact with the eNode B by being capable of radio resource control (RRC) signaling continue to be compatible. | 10-03-2013 |
20130273930 | COMPUTATION OF CHANNEL STATE FEEDBACK IN SYSTEMS USING COMMON INTERFERENCE SIGNAL INTERFERENCE CANCELATION - When enabled with common reference signal interference cancelation, a user equipment (UE) may still compute a channel state feedback value with consideration of any canceled interfering neighboring signals. When the neighboring cells are determined to be transmitting data during the time for which the channel state feedback value is being computed, the UE is able to derive the channel state feedback value considering those canceled interfering signals. The UE determines whether each neighboring cell is transmitting during the designated time either by obtaining signals that indicate the transmission schedule of the neighboring cells or by detecting the transmission schedule, such as based on the power class of the neighboring cells. If the UE determines that the neighboring cells are transmitting data during this time period, the UE will compute the channel state feedback value including consideration of the canceled interfering signals. | 10-17-2013 |
20130294337 | Buffer Status Report Triggers in Wireless Communications - Systems and methodologies are described that facilitate utilizing timers in conjunction with transmitting buffer status reports (BSR). A prohibit timer can be utilized to determine when BSRs can be transmitted to an eNB. The prohibit timer can be initialized or restarted upon transmitting a BSR to an eNB. A BSR retransmit timer can be used to determine when to retransmit a BSR. The BSR retransmit timer can be initialized upon transmitting a BSR to an eNB and restarted each time an uplink resource allocation is received from the eNB. Once the timer expires, if an uplink transmission buffer contains data (e.g., size>0), the BSR can be retransmitted to the eNB. Control data feedback can additionally be used to determine when to retransmit the BSR. In addition, in either case, the timer duration values can be provided by the eNB. | 11-07-2013 |
20130301566 | COEXISTENCE BETWEEN LEGACY CARRIER TYPES AND NEW CARRIER TYPES - A method of wireless communication occurs in a frequency band having a first set of resources associated with a first carrier type and a second set of resources associated with a second carrier type. In one configuration, the first carrier type is a new carrier type and the second carrier type is a legacy carrier type. Legacy UEs may only receive signals from the second carrier type. However, new UEs may receive signals from both the first carrier type and the second carrier type. Therefore, to provide backward compatibility while supporting new UEs, an eNodeB may signal support of the first carrier type to a new UE while maintaining signaling with legacy UEs. Additionally, the eNodeB may restrict operations of a UE to the first set of resources or second set of resources. | 11-14-2013 |
20130336186 | USING DTX AND DRX IN A WIRELESS COMMUNICATION SYSTEM - Systems, methodologies, and devices are described that can facilitate reducing power consumption associated with mobile devices. A mobile device can utilize a sleep mode controller that can facilitate selecting and/or switching to a desired sleep mode based in part on predefined sleep mode criteria. The sleep modes can include a non-sleep mode, light sleep mode, and/or deep sleep mode. The mobile device can employ an analyzer to evaluate information related to explicit signals, implicit signals, and/or the current sleep mode to determine whether a condition is met based in part on the predefined sleep mode criteria such that a transition to a different sleep mode is to be performed. If such a condition is met, the sleep mode controller can facilitate transitioning from the current sleep mode to a different sleep mode to facilitate reducing power consumption by the mobile device. | 12-19-2013 |
20130343355 | SEMI-PERSISTENT SCHEDULING GRANTS IN HETEROGENEOUS NETWORKS - Time division multiplexing (TDM) partitioning is one of the inter-cell interference coordination (ICIC) mechanisms considered for a heterogeneous network (HetNet) ICIC in a co-channel deployment. For example, in subframes that are pre-allocated to an evolved Node B (eNB), neighbor eNBs may not transmit, hence interference experienced by served user equipments (UEs) may be reduced. Semi-persistent scheduling (SPS) grants may have various available periodicities, which may not be compatible with TDM partitioning. Therefore, a UE may miss an SPS opportunity that was scheduled for a subframe that was not usable by the UE. Hence, using SPS grants with small periodicities in a heterogeneous network with TDM partitioning may require changes which may include adjusting the periodicities of the SPS grants, rescheduling of uplink SPS messages based on resource partitioning information (RPI), and/or determining RPI based on current SPS grants. | 12-26-2013 |
20140112262 | METHOD AND APPARATUS FOR IMPROVING RESOURCE USAGE IN COMMUNICATION NETWORKS USING INTERFERENCE CANCELATION - Systems, method and devices utilized in wireless communication may include creating, scheduling and/or using a transmission having at least one quasi-ABS which includes at least one macro set corresponding to a designated sector of a plurality of sectors in a macro node. Such subframes may be formed and partitioned to provide for a partition which may be used by a range expansion resource, such as a pico node or user entity. | 04-24-2014 |
20140146798 | METHODS AND APPARATUS FOR SUBFRAME INTERLACING IN HETEROGENEOUS NETWORKS - Methods and apparatus for providing wireless communications using subframe partitioning are disclosed. Two or more base stations may be allocated subframes in a radio frame. All or part of the subframe allocation may be provided to the associated user equipment (UEs), which may use it to determine signal metrics during assigned subframes for an associated base station. | 05-29-2014 |
20140198749 | TRANSMISSION AND PROCESSING OF HIGHER ORDER MODULATION - A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be a UE. The UE identifies properties associated with reference signals of a received payload. The properties associated with reference signals of the received payload may include a reference signal structure and/or a traffic to pilot ratio. The UE determines a payload structure based on the identified properties. Subsequently, the UE decodes the received payload based on the determined payload structure. The UE may receive mapping information indicating a mapping between possible properties associated with reference signals and possible payload structures. The UE may determine the payload structure further based on the received mapping information. The UE may receive the mapping information through a broadcast or RRC signaling. | 07-17-2014 |
20140204881 | Systems, Apparatus and Methods for Facilitating Frequency Reuse for Downlink Control Channels - Systems and methods for frequency reuse on downlink control channels (DLCCs) are provided. One method can include determining a first number of symbols to support transmission of control information on a DLCC, and configuring a second number of symbols for transmission of the control information on the DLCC, wherein the second number of symbols is greater than the first number of symbols. The method can also include assigning a number of DLCCs based on the second number of symbols, and transmitting control information over an assigned number of DLCCs to achieve an effective reuse factor less than one. Another method can include identifying fractions of bandwidth in a system having cells, and allocating at least one of the cells to at least one of the fractions of bandwidth in a system. Resource element groups allocated to the fractions of bandwidth can be coordinated across cells to provide frequency reuse. | 07-24-2014 |
20140211701 | COMMON REFERENCE SIGNAL PHASE DISCONTINUITY AND SEQUENCE INITIALIZATION - Methods, systems, and devices are described for supporting common reference signaling in wireless communications systems. Some configurations introduce a phase discontinuity between common reference signal (CRS) transmissions on different subframes. This may address issues that may arise when a reduced CRS periodicity is utilized. Indicators may also be transmitted from base stations to user equipment (UEs) to indicate whether phase continuity may be assumed or not. Some configurations may support CRS sequence initialization. These tools and techniques may utilize an extended CRS sequence periodicity, which may increase the number of CRS sequences transmitted by a cell. | 07-31-2014 |
20140254509 | METHODS AND APPARATUS FOR MULTI-SUBFRAME SCHEDULING - Methods, systems, and devices are described for scheduling transmissions for multiple subframes in a single scheduling operation. Scheduling information is provided in a multi-subframe scheduling information transmission for a set of subframes. Differences in characteristics for subframes under the multi-subframe information are determined, and one or more properties for communication during the one or more subframes may be adjusted based on subframe characteristics. Such multi-subframe scheduling may allow for reduced overhead for scheduling uplink or downlink transmissions. | 09-11-2014 |
20140301272 | COMMON REFERENCE SIGNAL INTERFERENCE CANCELLATION TRIGGERING IN HOMOGENEOUS NETWORKS - A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines whether one or more criteria for triggering interference cancellation in a homogeneous network are satisfied. The apparatus transmits a signal to a UE to control triggering the interference cancellation at the UE if the one or more criteria are satisfied. | 10-09-2014 |
20140341050 | CHANNEL ESTIMATE UNDER NON-UNIFORM REFERENCE SIGNAL PATTERN - Reference signals may not uniformly span over time and/or frequency on a resource unit. For example, reference signals may non-uniformly occupy symbols of a subframe. Alternatively, reference signals normally transmitted over certain tones of a subframe may have to be punctured to avoid collisions with a PSS and/or SSS transmitted over the same tones. Consequently, a UE may only be able to use a subset of reference signal tones for performing channel estimation. Accordingly, a method, an apparatus, and a computer program product for wireless communication are provided for improving channel estimation under a non-uniform signal pattern. The apparatus indicates to a UE to utilize a subset of reference signals to derive a channel estimate for demodulating data in a specific subframe, and transmits a plurality of subframes, the plurality of subframes including the reference signals and the specific subframe, the specific subframe including a PSS and/or SSS. | 11-20-2014 |
20140364136 | COMPUTATION OF CHANNEL STATE FEEDBACK IN SYSTEMS USING COMMON REFERENCE SIGNAL INTERFERENCE CANCELATION - When enabled with common reference signal interference cancellation, a user equipment (UE) may still compute a channel state feedback value with consideration of any canceled interfering neighboring signals. When the neighboring cells are determined to be transmitting data during the time for which the channel state feedback value is being computed, the UE is able to derive the channel state feedback value considering those canceled interfering signals. The UE determines whether each neighboring cell is transmitting during the designated time either by obtaining signals that indicate the transmission schedule of the neighboring cells or by detecting the transmission schedule, such as based on the power class of the neighboring cells. If the UE determines that the neighboring cells are transmitting data during this time period, the UE will compute the channel state feedback value including consideration of the canceled interfering signals. | 12-11-2014 |
Patent application number | Description | Published |
20080247358 | METHOD AND APPARATUS FOR CHANNEL SENSITIVE SCHEDULING IN A COMMUNICATION SYSTEM - Method and apparatus for a channel sensitive scheduler for scheduling transmissions in a communication system. The scheduler is defined by a priority function of the channel condition as determined by amount of transmission power needed by a mobile station. In one embodiment the channel condition is determined based on the transmission pilot power of each mobile station and is used to calculate a priority value for each mobile station. The mobile stations are then scheduled to transmit based on the priority value. | 10-09-2008 |
20090097412 | SYSTEM AND METHOD FOR RATE ASSIGNMENT - A method and apparatus for determining the data rate of a reverse link communication. An embodiment includes transmitting at a null rate on the communication channel only when the station is not transmitting voice, signaling, or data. An embodiment includes determining a maximum requested rate based on the normalized average pilot transmit power and the pilot reference value, and determining the timing of the rate request. An embodiment involves determining a maximum transmission rate. An embodiment involves determining sufficient power and a power-control set point. | 04-16-2009 |
20090170523 | SYSTEM AND METHOD FOR MULTILEVEL SCHEDULING - A method and apparatus for determining multilevel scheduling of a reverse link communication. An embodiment includes estimating capacity on the reverse link based on the sector load. An embodiment includes estimating load contribution based on an estimated signal-to-noise ratio. An embodiment includes estimating capacity available to schedule based on a ratio of measured other-cell interference over thermal noise, and based on sector load. An embodiment includes a method of distributing sector capacity across a base station (BS) and a base station controller (BSC). An embodiment includes determining priority of a station based on the pilot energy over noise plus interference ratio, the soft handoff factor, the fairness value, and the fairness factor α. | 07-02-2009 |
20110299626 | FEEDBACK OF CHANNEL STATE INFORMATION FOR MIMO AND SUBBAND SCHEDULING IN A WIRELESS COMMUNICATION SYSTEM - Techniques for efficiently sending channel state information using differential encoding are described. Differential encoding may be performed across space, across frequency, across space and frequency, across space, frequency and time, or across some other combination of dimensions. In one design, spatial state information may be determined for multiple spatial channels on multiple subbands. The spatial channels may correspond to different antennas, different precoding vectors, etc. Channel quality indicator (CQI) values may be obtained for the multiple spatial channels on the multiple subbands. The CQI values may be differentially encoded across the multiple spatial channels and the multiple subbands to obtain differential CQI information. In another design, CQI values may be obtained for multiple spatial channels on the multiple subbands in multiple time intervals and may be differentially encoded across space, frequency and time. The differential CQI information and the spatial state information may be sent as feedback. | 12-08-2011 |
20130028149 | METHOD AND APPARATUS FOR SIGNALING CONTROL DATA OF AGGREGATED CARRIERS - Techniques are provided for communicating control information for aggregated carriers. For example, a method includes receiving one or more assignments for a plurality of aggregated carriers. For example, the at least one of the plurality of aggregated carriers is a time division duplexing (TDD) carrier having a different subframe configuration than at least another one of the plurality of aggregated carriers. The method may include communicating control information for the plurality of aggregated carriers over one of the plurality of aggregated carriers. | 01-31-2013 |
20130114419 | RESOURCE MANAGEMENT FOR ENHANCED PDCCH - Certain aspects of the present disclosure provide techniques for managing resources utilized for enhanced physical downlink control channel (PDCCH) transmissions. | 05-09-2013 |
20130114565 | STRUCTURE OF ENHANCED PHYSICAL DOWNLINK CONTROL CHANNEL (e-PDCCH) IN LONG TERM EVOLUTION (LTE) - Aspects of the present disclosure relate generally to wireless communication systems, and more particularly, to defining a structure of and enhanced physical downlink control channel (e-PDCCH). Certain aspects provide methods and apparatus for determining a search space in which a base station (eNodeB) may transmit an enhanced physical downlink control channel (e-PDCCH), wherein the search space comprises one or more fractional portions of frequency-time resources of a physical resource block (PRB) pair, and attempting to decode the e-PDCCH based on the determined search space. | 05-09-2013 |
20130121216 | METHOD AND APPARATUS FOR SOFT BUFFER MANAGEMENT FOR HARQ OPERATION - Certain aspects of the present disclosure propose a method and an apparatus for calculating maximum number of hybrid automatic repeat request (HARQ) processes per component carrier and/or number of soft buffer bits for HARQ operation by taking into account the subframes which are available for a physical downlink shared channel (PDSCH) for a user equipment (UE) or a group of UEs. In the proposed method, the subframes that are not available for a PDSCH for at least a UE (either by specification or by configuration) may not be considered in calculating the number of soft buffer bits. | 05-16-2013 |
20130121270 | METHOD AND APPARATUS FOR SENDING CHANNEL STATE INFORMATION USING SUBFRAME - DEPENDENT CONTROL CHANNEL FORMAT - Techniques for reporting channel state information (CSI) for multiple cells (e.g., carriers) using multiple control channel formats are disclosed. A user equipment (UE) may be configured for operation on a plurality of cells. The UE may be configured to periodically report CSI for the plurality of cells and may also report CSI whenever requested. The UE may be configured with a plurality of control channel formats for sending CSI and possibly other control information in different subframes. The plurality of control channel formats may be associated with at least two different capacities. The UE may report CSI for the plurality of cells in the plurality of subframes based on the plurality of control channel formats. | 05-16-2013 |
20130121271 | SYSTEM AND METHOD FOR MANAGING SIMULTANEOUS UPLINK SIGNAL TRANSMISSIONS IN CARRIER AGGREGATION SYSTEMS - Systems and methods for managing the transmission of multiple signals on one or more uplink (UL) channels using carrier aggregation in LTE-A systems. A UE simultaneously transmits signals such as ACK/NACK and periodic CSI using one or more uplink channels, such as a physical uplink shared channel (PUSCH) and/or a physical uplink control channel (PUCCH), by increasing the resources used to transmit at least one of those signals. According to one aspect, a UE simultaneously transmits ACK/NACK signals and periodic CSI signals by multiplexing those signals on the PUSCH. Certain aspects avoid frequently dropped periodic CSI signals and provide mechanisms to ensure that ACK/NACK signals are transmitted. | 05-16-2013 |
20130258864 | H-ARQ TIMING DETERMINATION UNDER CROSS-CARRIER SCHEDULING IN LTE - Techniques are provided for carrier aggregation and H-ARQ timing in LTE or the like. For example, there is provided a method, operable by a mobile device, that may involve identifying a first component carrier and a second component carrier among a plurality of component carriers to be aggregated, wherein a first number of subframes of a subframe type in the first component carrier is less than a second number of subframes of the same subframe type in the second component carrier. The method may further involve receiving a configuration to monitor a control channel for the second component carrier on the first component carrier. The method further may further involve determining a reference uplink-downlink subframe configuration for the second component carrier based at least in part on the subframe type and the received configuration for the control channel. | 10-03-2013 |
20130343239 | DATA TRANSMISSION IN CARRIER AGGREGATION WITH DIFFERENT CARRIER CONFIGURATIONS - Techniques are provided for aggregating carriers with different carrier configurations. The carriers may include both time division duplex (TDD) and frequency division duplex (FDD) carriers which may be configured such that control information for both carrier types is conveyed by the TDD carrier. In one aspect, an association between a set of subframes, including both TDD and FDD subframes, is determined. The association may operate to distribute control information for the FDD carrier over uplink subframes of the TDD carrier to achieve a load balancing. Alternatively, the association may operate to minimize a hybrid automatic repeat request (HARQ) feedback delay. The TDD carrier may provide resource grants for the aggregated carriers and the association may be used to identify subframes from both carriers which may be scheduled in a given DL subframe. | 12-26-2013 |
20140050194 | MULTIPLE TIMING ADVANCE GROUPS (TAGS) FOR UL CARRIER AGGREGATION (CA) - Techniques are provided for assigning aggregated component carriers. For example, a method may include receiving from a user equipment (UE) a set of rules associated with timing advance groups (TAGs) comprising allowable combinations of frequency bands. The method may include determining frequencies of aggregated component carriers. The method may include assigning the aggregated component carriers to at least one timing advance group based on the allowable combinations of frequency bands and the determined frequencies of the aggregated component carriers. | 02-20-2014 |
20140126399 | BUFFER STATUS REPORTING AND LOGICAL CHANNEL PRIORITIZATION IN MULTIFLOW OPERATION - Uplink reporting and logical channel prioritization in multiflow operation is described. In some embodiments, uplink reporting for multiflow operation utilizes bearer level splitting where the UE associates bearers or logical channel groups (LCGs) with cells for uplink reporting. In some embodiments, uplink reporting for multiflow operation utilizes packet level splitting where the UE groups buffers for all LCGs into a common pool for uplink reporting. In packet level splitting embodiments, the UE may perform uplink reporting based on the total amount of data available for transmission in the common buffer pool or by applying scaling coefficients associated with the serving cells. Some embodiments manage mapping of logical channel payloads to uplink grants for multiflow operation. | 05-08-2014 |
20140133415 | UPLINK CONTROL AND DATA TRANSMISSION IN MULTIFLOW-ENABLED NETWORKS - Signaling and procedural considerations are disclosed for uplink multiflow operations in user equipment configured for carrier aggregation. Advanced wireless networks may take advantage of unused capacity of neighboring cells by configuring network nodes and UEs to both receive on the downlink and transmit on the uplink to multiple cells or network nodes. Implementing multiflow on UE for the uplink transmission process may cause issues in various channels, signaling, and procedural operations that may be addressed through data and control signaling the techniques disclosed herein. | 05-15-2014 |
20140133474 | UPLINK TRANSMISSION FOR CARRIER AGGREGATION VIA MULTIPLE NODES - Uplink control channel management is disclosed in which a user equipment receives a configuration for multiple uplink control channels for transmission to multiple nodes in multiflow communication with the UE. The UE generates the uplink control channels based on the configuration, wherein each of the uplink control channels is generated for a corresponding one of the nodes. The UE then transmits each of the uplink control channels to the corresponding node. For UEs capable of multiple uplink transmissions, in which the UE communicates with at least one of the nodes over multiple component carriers (CCs), the configuration may designate with of the multiple CCs the UE should transmit the uplink control channel for that node. For UEs capable of only single uplink transmissions, the configuration may designate the transmission of the uplink control channels in either frequency division multiplex (FDM) or time division multiplex (TDM) schemes. | 05-15-2014 |
20140169197 | WAN-WLAN CELL SELECTION IN UES - A selection process is disclosed for a user equipment (UE) to select between a WAN and a WLAN. Instead of defaulting to select one or the other networks, as long as the connection is available, a better load balancing and maximization of the system capacity may be achieved when the UE selects the network according to a priority order between the WAN/WLAN. The priority order takes into account various network metrics, such as loading, channel conditions, bandwidth, and service requirements. | 06-19-2014 |
20140211725 | Anchor Carrier in a Multiple Carrier Wireless Communication System - Multiple downlink (DL) and uplink (UL) carriers can enhance wireless communication between nodes and user equipment (UE). Among the carriers, it is beneficial to have some special, by configuration designated carriers to provide synchronization, system information, paging, data and control for multi-carrier enabled UEs. Thereby, overhead system information can be reduced. For instance, synchronization and paging for a certain cell are not provided on all carriers. A carrier can provide backward compatibility for single carrier UEs for access, synchronization, broadcast, and new control region within the data region of the legacy terminals. Coordination between nodes for selecting anchor carriers that mitigate interference and for transmit power control for non-anchor carriers provide further network performance advantages. | 07-31-2014 |
20140247738 | SYSTEM AND METHOD FOR RATE ASSIGNMENT - A method and apparatus for determining the data rate of a reverse link communication. An embodiment includes transmitting at a null rate on the communication channel only when the station is not transmitting voice, signaling, or data. An embodiment includes determining a maximum requested rate based on the normalized average pilot transmit power and the pilot reference value, and determining the timing of the rate request. An embodiment involves determining a maximum transmission rate. An embodiment involves determining sufficient power and a power-control set point. | 09-04-2014 |
20140293970 | WLAN UPLINK SCHEDULER FOR LTE-WLAN AGGREGATION - Techniques for improving uplink throughput of UE uplink transmissions are disclosed. The UE may communicate with an eNB over an LTE wireless link using a first radio, and with a WLAN access point over a WLAN wireless link using a second radio. The UE may schedule a first portion of uplink data from an aggregating layer of the UE for transmission over the WLAN wireless link during a scheduling window, the scheduling based on an availability of access to the LTE wireless link. The UE may transmit the first portion of the uplink data over the WLAN wireless link during the scheduling window. The aggregation of the LTE wireless link with the WLAN wireless link may allow the UE to transmit uplink data from the aggregating layer of the UE over both the LTE wireless link or the WLAN wireless link. | 10-02-2014 |
20140307622 | PACKET-LEVEL SPLITTING FOR DATA TRANSMISSION VIA MULTIPLE CARRIERS - Packet-level splitting for data transmission via multiple carriers is discussed. Data packets for transmission may be segregated by a first network node into multiple flows in which data packets for a first flow may be sent from the first network node to a second network node using a first set of carriers while data packets for the other flows may be forwarded to other network nodes for transmission to the second network node using other sets of carriers. The various sets of carriers are determined by the sets of carriers configured for the second network node. | 10-16-2014 |
20140321376 | LTE-WLAN CENTRALIZED DOWNLINK SCHEDULER - Techniques for managing downlink transmissions from a base station to multiple UEs over aggregated LTE and WLAN links are provided. The base station may jointly assign resources for transmitting downlink data during a scheduling instance. The resource assignment may include a prioritization based on channel conditions and system throughput when the links are considered jointly. In accordance with the joint resource assignment, the base station may build packets for the downlink transmission at an aggregating layer which, for example, may be coupled to media access control (MAC) elements associated with the respective links. The base station may then transmit the packets to at least a subset of the UEs based on the joint resource assignment. | 10-30-2014 |
20140334429 | Transmission of Feedback Information for Data Transmission on Multiple Carriers - Techniques for sending feedback information for multi-carrier operation are described. In an aspect, feedback information for data transmissions on multiple downlink carriers may be sent on at least one uplink resource determined based on at least one downlink resource used to send at least one downlink grant for the data transmissions. In another aspect, feedback information for data transmissions on multiple downlink carriers may be sent with reduced or no orthogonal spreading to enable more feedback information to be sent. In yet another aspect, feedback information for data transmissions on multiple downlink carriers may be sent with channel selection. A UE may send a transmission of at least one signal value on at least one resource to convey acknowledgement (ACK) information for data transmissions on multiple downlink carriers. The signal value(s) and resource(s) may be determined based on the content of the ACK information. | 11-13-2014 |
20140349701 | UPLINK POWER HEADROOM MANAGEMENT FOR CONNECTIVITY WITH LOGICALLY SEPARATE CELLS - Power headroom management in uplink carrier aggregation for connectivity with logically separate cells of a wireless communications system is performed by a network entity, alone or in combination with another network entity, one or more mobile entities, or both. This may include determining an uplink power allocation across at least two independently controlled cells of a wireless communication network for a mobile entity served by at least two independently controlled cells of a wireless communication network, subject to a total PH constraint for uplink transmissions by the mobile entity. A network entity may then manage PH reporting for determining the uplink power allocation by the uplink serving cells, based on the determined uplink power allocation. Managing the PH reporting may be performed by at least one of: explicit coordination between the at least two independently controlled cells, implicit coordination between the at least two independently controlled cells, or configuring PH reporting from the mobile entity by at least one of the at least two independently controlled cells. | 11-27-2014 |
20140376438 | RESOURCE SPECIFICATION FOR BROADCAST/MULTICAST SERVICES - Techniques for supporting multimedia broadcast/multicast services (MBMS) are described. In an aspect, resources used for MBMS services may be provided with a multi-tier structure. In the first tier, resources (e.g., subframes) used for a multicast control channel (MCCH) for MBMS services may be signaled in a system information block (SIB). In the second tier, resources (e.g., subframes) for channels carrying data for MBMS services may be signaled via the MCCH. In one design, a base station/cell may determine resources used to send a MCCH. The cell may generate a SIB comprising information indicative of the resources used to send the MCCH. The cell may send the SIB in a broadcast control channel (BCCH). The cell may send the MCCH on the resources indicated by the information sent in the SIB. The cell may send other channels carrying data for MBMS services based on information sent in the MCCH. | 12-25-2014 |
20150043479 | TECHNIQUES FOR ALLOCATING USER EQUIPMENT PROCESSING CAPABILITY AMONG MULTIPLE ACCESS NODES - Certain aspects of the present disclosure relate to allocating user equipment (UE) processing capability among multiple access nodes. In an aspect, processing capability of a UE may be determined. When the UE is in communication with at least a first access node and a second access node, a first allocation of the UE processing capability for the first access node or a second allocation of the UE processing capability for the second access node may be determined. Resources may be assigned for the UE based at least in part on the first allocation or the second allocation. In an aspect, the first access node and the second access node may negotiate to determine the first allocation or the second allocation. In an aspect, the first allocation or the second allocation may be determined based on a previously-configured rule associated with a category of the UE. | 02-12-2015 |
20150085718 | SIMPLIFIED FDD-TDD CARRIER AGGREGATION - Methods, systems, and devices are described for multi-carrier communications involving one or more TDD component carriers and one or more FDD component carriers in a wireless communications network. Some described embodiments are directed to systems and methods for multi-carrier communications for a half-duplex device. The described methods, systems, and devices may simplify multi-carrier communications, such as the determination of hybrid automatic repeat request (HARQ) and/or scheduling timing with FDD+TDD carrier aggregation. | 03-26-2015 |
20150085720 | REDUCED DELAY HARQ PROCESS TIMELINE FOR FDD-TDD CARRIER AGGREGATION - Methods, systems, and devices for multi-carrier scheduling in wireless communications networks. The described techniques may be employed to minimize hybrid automatic repeat requests (HARQ) delay in a wireless communications network utilizing one or more TDD component carriers and one or more FDD component carriers. Scheduling of TDD uplink (UL) and downlink (DL) may be determined based on an FDD component carrier. A number of HARQ processes may be determined for a TDD component carrier based on DL/UL configuration of the TDD component carrier. Scheduling may include overwriting certain HARQ transfers. The described techniques may apply to any TDD DL/UL configuration. | 03-26-2015 |
Patent application number | Description | Published |
20090238141 | METHOD AND APPARATUS FOR HANDOVER IN A WIRELESS COMMUNICATION SYSTEM - Systems and methodologies are described that facilitate system frame number (SFN) indication and identification during a random access procedure (e.g., associated with a handover). As described herein, a target cell can configure one or more Random Access Responses (RARs) designated for transmission to a terminal during the access phase of a handover to include the SFN of the target cell. Techniques are further described herein by which the target cell can include SFN information in a sub-header associated with a RAR, in the payload of a RAR, and/or in other appropriate manners. In addition, the target cell can configure one or more flags of the RAR to indicate the presence of SFN information. Upon receiving a RAR with embedded SFN information, a terminal can utilize the SFN for operations such as frequency hopping or uplink resource configuration as described herein. | 09-24-2009 |
20110076962 | CONTROL INFORMATION SIGNALING - Methods, systems, apparatus and computer program products are provided to facilitate the configuration and allocation of control information associated with transmissions of a wireless communication system. In systems that utilize multiple component carriers, cross-carrier signaling may be used to carry the control information associated with one component carrier on a different component carrier. By allowing control information messages to share their allocated search spaces, the number of decoding attempts needed to obtain control information can be kept within desirable limits while improving scheduling and resource allocation flexibility. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the disclosed subject matter. Therefore, it is to be understood that it should not be used to interpret or limit the scope or the meaning of the claims. | 03-31-2011 |
20110081939 | COMPONENT CARRIER POWER CONTROL IN MULTI-CARRIER WIRELESS NETWORK - Techniques for adjusting transmit power of component carriers in a multi-carrier wireless communication system are disclosed. A base station may determine a plurality of associations relating to one or more component carriers configured for use by a user equipment. The user equipment may receive downlink control information from the base station including one or more power control commands and may adjust a transmit power of its component carriers based on the associations. The user equipment may be notified of the associations either implicitly or explicitly. | 04-07-2011 |
20110188436 | METHOD AND APPARATUS FOR SENDING SCHEDULING INFORMATION FOR BROADCAST/MULTICAST SERVICES - Techniques for supporting multimedia broadcast/multicast services (MBMS) are described. A group of base stations/cells may support a number of MBMS services and may transmit any set of MBMS services in a given scheduling period. In one design, a base station may determine scheduling information for a plurality of MBMS services, generate a bitmap based on the scheduling information, and send the bitmap to convey the scheduling information. The bitmap may include a bit for each MBMS service, and the bit may indicate whether or not that MBMS service is scheduled. In one design, the bitmap may cover all MBMS services supported by the base station. In another design, a plurality of groups of MBMS services may be formed for all supported MBMS services. A group of MBMS services may be selected from among the plurality of groups, and the bitmap may be for the MBMS services in the selected group. | 08-04-2011 |
20120039269 | METHOD AND APPARATUS OF DEACTIVATING CARRIERS IN WIRELESS COMMUNICATIONS - Methods and apparatuses are provided for determining whether to deactivate one or more uplink carriers based at least in part on determining deactivation of a downlink carrier. A linking of the one or more uplink carriers to the downlink carrier can be obtained for determining whether to deactivate the one or more uplink carriers. The linking can be a system information block linking, a carrier indicator field linking, a pathloss linking, an uplink timing reference linking, and/or the like. The one or more uplink carriers can be deactivated based on the linking and/or another linking to one or more other downlink carriers. | 02-16-2012 |
20130028117 | METHOD AND APPARATUS FOR AGGREGATING CARRIERS OF MULTIPLE RADIO ACCESS TECHNOLOGIES - The described aspects include methods and apparatus for communicating control information in a carrier aggregation configuration that uses multiple radio access technologies (RAT). A first resource assignment related to a first carrier corresponding to a first RAT can be received, as well as, a second resource assignment related to a second carrier corresponding to a second RAT. The first carrier and the second carrier are aggregated for communicating data in a wireless network. In addition, resources can be determined for communicating first RAT control data for the first RAT over an uplink carrier based at least in part on the first resource assignment. Second RAT control data can then also be communicated in containers and/or using timing for control data of the first RAT over at least a portion of the resources. | 01-31-2013 |
20130083749 | Random Access Channel Design for Narrow Bandwidth Operation in a Wide Bandwidth System - A method of wireless communication includes a random access channel configuration for narrow bandwidth operations within a wider LTE system bandwidth. A first random access channel (RACH) configuration is broadcast for a regular device. A second RACH configuration is broadcast for a narrow bandwidth device. The narrow bandwidth device operates in a narrower bandwidth than the regular device. | 04-04-2013 |
20130089048 | EXTENSION CARRIER AS A BANDWIDTH EXTENSION - A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus receives extended bandwidth information indicating availability of an extended bandwidth. The extended bandwidth includes a base carrier and an extension carrier within a legacy guard band of the base carrier. The apparatus receives data on a downlink in the extension carrier based on the extended bandwidth information. | 04-11-2013 |
20130114495 | Physical Channel Characteristics for e-PDCCH in LTE - Certain aspects of the present disclosure provide techniques for processing and transmitting enhanced physical downlink control channel (PDCCH) transmissions. | 05-09-2013 |
20130195084 | PHYSICAL LAYER ISSUES RELATED TO MULTI-TA GROUP SUPPORT - A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may determine a number of uplink timing groups configured for a plurality of component carriers, and determine whether to transmit at least one of data or control information on one or more first component carriers of the plurality of component carriers concurrently with sounding reference signals (SRS) on one or more second component carriers of the plurality of component carriers based at least in part on the number of uplink timing groups. When only one uplink timing group is determined, the SRS is transmitted in a symbol on the one or more second component carriers if the data and control information is not transmitted in the symbol. When two uplink timing groups are determined SRS may be transmitted on the second component carriers concurrently with data or control information on the component carriers | 08-01-2013 |
20130301566 | COEXISTENCE BETWEEN LEGACY CARRIER TYPES AND NEW CARRIER TYPES - A method of wireless communication occurs in a frequency band having a first set of resources associated with a first carrier type and a second set of resources associated with a second carrier type. In one configuration, the first carrier type is a new carrier type and the second carrier type is a legacy carrier type. Legacy UEs may only receive signals from the second carrier type. However, new UEs may receive signals from both the first carrier type and the second carrier type. Therefore, to provide backward compatibility while supporting new UEs, an eNodeB may signal support of the first carrier type to a new UE while maintaining signaling with legacy UEs. Additionally, the eNodeB may restrict operations of a UE to the first set of resources or second set of resources. | 11-14-2013 |