Patent application number | Description | Published |
20110222416 | 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. | 09-15-2011 |
20110222491 | METHOD AND APPARATUS FOR SENDING CONTROL INFORMATION WITH ENHANCED COVERAGE IN A WIRELESS NETWORK - Techniques for sending control information in a manner to improve reliability are described. In an aspect, control information may be sent on multiple control channels, which may be independently configured and operated, in order to improve reliability. In one design, a base station may send signaling to instruct at least one UE to receive control information on both a first control channel (e.g., a Physical Downlink control Channel (PDCCH)) and a second control channel (e.g., a Relay PDCCH (R-PDCCH)). The base station may send control information for the at least one UE on the first and second control channels, e.g., in different time and/or frequency regions of a subframe. In another aspect, control information may be sent on a control channel in multiple subframes with bundling to improve reliability. A user equipment (UE) may perform the complementary processing to recover the control information sent by the base station on multiple control channels or with bundling. | 09-15-2011 |
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 |
20110250911 | NOISE PADDING TECHNIQUES IN HETEROGENEOUS NETWORKS - A method of wireless communication includes detecting uplink interference in a received uplink transmission of a user equipment. The received uplink transmission is padded with noise based on the detected interference and also based on a frequency domain partition, whether a subframe is protected, and/or a user equipment type. | 10-13-2011 |
20110250913 | RANDOM ACCESS PROCEDURE ENHANCEMENTS FOR HETEROGENEOUS NETWORKS - Certain aspects of the present disclosure provide various mechanisms that allow a user equipment to convey information regarding one or more attributes to a base station during a random access (RA) procedure. The attributes may include, for example a capability of the UE (e.g., to support a particular feature or version of a standard) or a condition of the UE (e.g., if it is currently experiencing an interference condition). | 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 |
20110275394 | RESOURCE PARTITIONING INFORMATION FOR ENHANCED INTERFERENCE COORDINATION - Methods and apparatus for partitioning resources for enhanced inter-cell interference coordination (eICIC) are provided. Certain aspects involve broadcasting a message indicating time-domain resource partitioning information (RPI), where a user equipment (UE) may be operating in idle mode. With the RPI, the UE may be able to identify protected resources with reduced/eliminated interference from neighboring cells. The RPI in this broadcasted message may be encoded as a bitmap as an alternative or in addition to enumeration of the U/N/X subframes. Other aspects entail transmitting a dedicated or unicast message indicating the time-domain RPI, where a UE may be operating in connected mode. With the RPI, the UE may be able to determine channel state information (CSI), make radio resource management (RRM) measurements, or perform radio link monitoring (RLM), based on one or more signals from a serving base station during the protected time-domain resources. | 11-10-2011 |
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 |
20110292823 | SOUNDING REFERENCE SIGNAL (SRS) IN HETEROGENEOUS NETWORK (HETNET) WITH TIME DIVISION MULTIPLEXING (TDM) PARTITIONING - Methods and apparatus for uplink (UL) radio link monitoring (RLM) in a Long Term Evolution (LTE) heterogeneous network (HetNet) with enhanced inter-cell interference coordination (eICIC) are described. Various options are presented in an effort to transmit a sounding reference signal (SRS) of a user equipment device (UE) served by a Node B in the HetNet, avoiding both interference from UL transmissions from other UEs being served by neighboring Node Bs and collisions with the UE's own channel quality information (CQI) or physical uplink shared channel (PUSCH), for example. | 12-01-2011 |
20110312358 | Channel Quality Reporting for Different Types of Subframes - A method for determining channel quality estimates of two or more types of subframes, such as clean and unclean subframes, may be applicable to both legacy and newer user equipment. A first base station affects a channel quality measurement by either transmitting dummy signals over designed tones that correspond to a second base station, or by puncturing transmissions during designated tones that correspond to the second base station. | 12-22-2011 |
20110319090 | Resource Utilization Measurements for Heterogeneous Networks - Interference issues between wireless network devices are mitigated. An evolved node B (eNodeB) may experience higher cell load or higher interference when serving user equipment (UEs) that are operating in an cell range extension (CRE) area in which the UEs are strongly affected by aggressor eNodeBs. An eNodeB experiencing higher cell load or serving user equipments (UEs) under higher interference generally requests an interfering/aggressor eNodeB to repartition some of its resources. Repartitioning of resources, however, may have a negative impact on the eNodeB serving CRE area UEs. In one aspect, a new measurement of utilization accounts for CRE status and differentiates between protected and unprotected resources, such as subframes. | 12-29-2011 |
20120021753 | 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. | 01-26-2012 |
20120087266 | METHOD AND APPARATUS FOR MANAGING INTER-CELL INTERFERENCE COORDINATION ACTIONS FOR TIME-DOMAIN PARTITIONED CELLS - Aspects of the present disclosure relate generally to wireless communication systems, and more particularly, to systems and methods for managing inter-cell interference coordination (ICIC) actions for time-domain partitioned cells. In certain aspects, time-domain partitioning is accounted for by an eNB in determining whether to send frequency-based inter-cell interference information (e.g., uplink overload indicator) to neighboring eNB(s) and/or responsive actions to take in response to receiving frequency-based inter-cell interference information (e.g., uplink overload indicator, high interference indicator, and/or relative narrowband transmission power). | 04-12-2012 |
20120093010 | EVOLVED NODE B CHANNEL QUALITY INDICATOR (CQI) PROCESSING FOR HETEROGENEOUS NETWORKS - Methods and apparatus for processing channel quality information (CQI) and scheduling resources subject to cooperative resource allocation based on the CQI are provided. To convey the CQI for protected/unprotected subframes in a single report, a new vector CQI format may be utilized. Two alternatives for CQI processing this vector format and the advantages of each are described. In the first alternative, a single entry from the CQI vector is selected for processing by a downlink scheduler and/or other media access control (MAC) blocks (e.g., a PHICH, DCI power control, and/or PDCCH scheduler). In the second alternative, the selection from the CQI vector is made on a per-subframe basis, and both the subframe and the selected CQI element are processed by the downlink scheduler and/or the other MAC blocks. In this manner, better scheduling decisions may be made using the CQI vector. | 04-19-2012 |
20120093095 | METHOD AND APPARATUS FOR SUPPORTING COMMUNICATIONS IN A HETEROGENEOUS NETWORK - A method, an apparatus, and a computer program product for wireless communication are provided in which an apparatus may determine broadcast channel scheduling information for one or more broadcasts of a payload by a broadcast channel associated with a first base station based on one or more broadcast channel interference coordination schemes, wherein reception of the broadcast channel associated with the first base station is interfered at least in part based on one or more transmissions from a second base station, and receive the payload based on the determined broadcast channel scheduling information. | 04-19-2012 |
20120093096 | 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. | 04-19-2012 |
20120207069 | DISCONTINUOUS RECEPTION (DRX) OPTIMIZATIONS - Certain aspects of the present disclosure provide methods and apparatus for optimizing discontinuous reception (DRX) modes, for example, based on monitored traffic statistics. | 08-16-2012 |
20120243488 | METHODS AND APPARATUS FOR EFFECTIVE ALLOCATION OF ADAPTIVE RESOURCE PARTITIONING INFORMATION (ARPI) TO PICO ENHANCED NODE B BY MACRO ENHANCED NODE B IN HETEROGENEOUS NETWORK - Methods and apparatus for effectively allocating resource partitioning information (RPI) in a wireless communication network are provided. For certain aspects, a method for wireless communications generally includes receiving, at a first base station, such as a pico enhanced Node B (eNB), resource partitioning information (RPI) from at least one second base station, such as a macro eNB; determining one or more resources indicated in the RPI actually usable by the first base station; and sending, from the first base station to the at least one second base station, an indication of the actually usable resources. | 09-27-2012 |
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 |
20130121186 | UPLINK DATA TRANSMISSION WITH INTERFERENCE MITIGATION - Systems and methods providing uplink coordinated multi-point (CoMP) communication are shown. A second cell may identify at least one first UE communicating with a first cell and capable of causing high uplink interference to the second cell. The second cell may estimate uplink interference from the at least one first UE at the second cell. The second cell may estimate uplink interference on specific resources. For example, the second cell may determine resources assigned to the at least one first UE for data transmission to the first cell (e.g., using pre-scheduling information provided by the first cell) and estimate uplink interference from the at least one first UE on the resources assigned to the at least one first UE. The second cell may schedule at least one second UE for uplink data transmission to the second cell based on the estimated uplink interference from the at least one first UE. | 05-16-2013 |
20130176874 | UPLINK POWER/RATE SHAPING FOR ENHANCED INTERFERENCE COORDINATION AND CANCELLATION - According to an aspect of the present disclosure, a serving base station determines a path loss and/or a distance measurement between the serving base station and a neighbor base station. A cell-specific power control parameter and a UE transmission power may be determined based on the determined path loss and/or distance measurement. Finally, the serving base station assigns a UE transmission rate based at least on a region where a UE is located, the region being within a serving cell | 07-11-2013 |
20130194953 | POWER CONTROL MANAGEMENT IN UPLINK (UL) COORDINATED MULTIPOINT (COMP) TRANSMISSION - Techniques for performing path loss (PL) compensation in coordinated multipoint (CoMP) systems are provided. A method for wireless communications by a user equipment (UE) is provided. The method generally includes selecting, from a plurality of transmission points involved in uplink (UL) coordinated multipoint (CoMP) operations with the UE, a transmission point to associate with for path loss (PL) compensation, and adjusting power of one or more transmissions based on path loss measured based on the selected transmission point | 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 |
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 |
20130250927 | Resource Partitioning Information for Enhanced Interference Coordination - Methods and apparatus for partitioning resources for enhanced inter-cell interference coordination (eICIC) are provided. Certain aspects involve broadcasting a message indicating time-domain resource partitioning information (RPI), where a user equipment (UE) may be operating in idle mode. With the RPI, the UE may be able to identify protected resources with reduced/eliminated interference from neighboring cells. The RPI in this broadcasted message may be encoded as a bitmap as an alternative or in addition to enumeration of the U/N/X subframes. Other aspects entail transmitting a dedicated or unicast message indicating the time-domain RPI, where a UE may be operating in connected mode. With the RPI, the UE may be able to determine channel state information (CSI), make radio resource management (RRM) measurements, or perform radio link monitoring (RLM), based on one or more signals from a serving base station during the protected time-domain resources. | 09-26-2013 |
20130301458 | CHANNEL QUALITY REPORTING FOR DIFFERENT TYPES OF SUBFRAMES - A method for determining channel quality estimates of two or more types of subframes, such as clean and unclean subframes, may be applicable to both legacy and newer user equipment. A first base station affects a channel quality measurement by either transmitting dummy signals over designed tones that correspond to a second base station, or by puncturing transmissions during designated tones that correspond to the second base station. | 11-14-2013 |
20130301461 | RESOURCE UTILIZATION MEASUREMENTS FOR HETEROGENEOUS NETWORKS - Interference issues between wireless network devices are mitigated. An evolved node B (eNodeB) may experience higher cell load or higher interference when serving user equipment (UEs) that are operating in an cell range extension (CRE) area in which the UEs are strongly affected by aggressor eNodeBs. An eNodeB experiencing higher cell load or serving user equipments (UEs) under higher interference generally requests an interfering/aggressor eNodeB to repartition some of its resources. Repartitioning of resources, however, may have a negative impact on the eNodeB serving CRE area UEs. In one aspect, a new measurement of utilization accounts for CRE status and differentiates between protected and unprotected resources, such as subframes. | 11-14-2013 |
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 |
20140016582 | SUBFRAME CONFIGURATION MANAGEMENT IN LTE HETNETS WITH TIME DOMAIN EICIC AND VOIP - A method, an apparatus, and a computer program product for wireless communication where a macro eNB or similar device may be configured to adjust an ABS configuration that is used for designating ABS subframes are provided to provide a VoLTE service to a UE. The ABS configuration may be adjusted by imposing one or more restrictions, such as alignment of the DRX OnDuration of a UE with some offset to the serving cell non-ABS subframes, and imposing restrictions on the ABS subframe settings at the macro eNB. The method or apparatus may initiate or terminate a wireless communication feature for a UE, and may adjust an ABS configuration based on the wireless communication feature, such that a maximum limit is set on a number of ABS subframes or a minimum limit is set on a number of non-ABS subframes based on the wireless communication feature. | 01-16-2014 |
20140119320 | RANDOM ACCESS PROCEDURE ENHANCEMENTS FOR HETEROGENEOUS NETWORKS - Certain aspects of the present disclosure provide various mechanisms that allow a user equipment to convey information regarding one or more attributes to a base station during a random access (RA) procedure. The attributes may include, for example a capability of the UE (e.g., to support a particular feature or version of a standard) or a condition of the UE (e.g., if it is currently experiencing an interference condition). | 05-01-2014 |
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 |
20140204889 | 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. | 07-24-2014 |
20140247790 | 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. | 09-04-2014 |
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 |
20140334318 | METHOD AND APPARATUS FOR ESTIMATING AN ACHIEVABLE LINK THROUGHPUT BASED ON ASSISTANCE INFORMATION - Methods and apparatuses are provided for determining available uplink bandwidth as an achievable throughput for a link. An available link capacity of a link with a cell for a user equipment is estimated based on a communication quality measured in the cell. An available fraction of cell resources for the user equipment over the link is also estimated based at least in part on received assistance information. An available bandwidth of the cell is then estimated as an achievable throughput for the user equipment over the link as a function of the estimated available link capacity and the estimated available fraction of cell resources. Moreover, a network procedure can be performed based at least in part on comparing the achievable throughput to one or more thresholds. | 11-13-2014 |
20140348019 | 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). | 11-27-2014 |
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 |
20150049707 | TECHNIQUES FOR MANAGING RADIO LINK FAILURE RECOVERY FOR A USER EQUIPMENT CONNECTED TO A WWAN AND A WLAN - Certain aspects of the present disclosure relate to techniques for managing radio link failure recovery for a user equipment (UE) connected to a WWAN and a WLAN. The techniques may include establishing communication with a first radio access technology (RAT) and a second RAT. At least one data flow may be transmitted over each of the first RAT and the second RAT. Determinations may be made as to whether to maintain the at least one data flow over the second RAT when a radio link failure (RLF) is detected at the UE and/or whether to resume the at least one data flow over the second RAT upon RLF recovery. The determinations may be made at the UE, at a network entity in communication with the UE, or some combination thereof. | 02-19-2015 |
20150085796 | FLEXIBLE OPERATION OF ENHANCED TTI-BUNDLING MODES IN LTE - A method, an apparatus, and a computer program product for wireless communication are provided. At least two hybrid automatic repeat request (HARQ) processes are selected from among a plurality of HARQ processes within a round trip time. The at least two selected HARQ processes are combined to transmit the same data in a combined transmission. The at least two selected HARQ processes may be continuous within the round trip time, or offset within the round trip time. In the case of offset HARQ processes, the offset between the at least two selected HARQ processes may allow for early termination of the combined transmission. For example, an ACK of a first of the selected HARQ processes may terminate the transmission of a second of the selected HARQ processes. | 03-26-2015 |