Patent application number | Description | Published |
20080228974 | Design Structure for a Livelock Resolution Circuit - A design structure for a livelock resolution circuit is provided. When a bus unit detects a timeout condition, or potential timeout condition, the bus unit activates a livelock resolution request signal. A livelock resolution unit receives livelock resolution requests from the bus units and signals an attention to a control processor. The control processor performs actions to attempt to resolve the livelock condition. Once a bus unit that issued a livelock resolution request has managed to successfully issue its command, it deactivates its livelock resolution request. If all livelock resolution request signals are deactivated, then the control processor instructs the bus and all bus units to resume normal activity. On the other hand, if the control processor determines that a predetermined amount of time passes without any progress being made, it determines that a hang condition has occurred. | 09-18-2008 |
20080301374 | STRUCTURE FOR DYNAMIC LIVELOCK RESOLUTION WITH VARIABLE DELAY MEMORY ACCESS QUEUE - A design structure for resolving the occurrence of livelock at the interface between the processor core and memory subsystem controller. Livelock is resolved by introducing a livelock detection mechanism (which includes livelock detection utility or logic) within the processor to detect a livelock condition and dynamically change the duration of the delay stage(s) in order to alter the “harmonic” fixed-cycle loop behavior. The livelock detection logic (LDL) counts the number of flushes a particular instruction takes or the number of times an instruction re-issues without completing. The LDL then compares that number to a preset threshold number. Based on the result of the comparison, the LDL triggers the implementation of one of two different livelock resolution processes. These processes include dynamically configuring the delay queue within the processor into one of two different configurations and changing the sequence and timing of handling memory access instructions, based on the specific configuration of the delay queue. | 12-04-2008 |
20090164682 | Livelock Resolution - A mechanism is provided for resolving livelock conditions in a multiple processor data processing system. When a bus unit detects a timeout condition, or potential timeout condition, the bus unit activates a livelock resolution request signal. A livelock resolution unit receives livelock resolution requests from the bus units and signals an attention to a control processor. The control processor performs actions to attempt to resolve the livelock condition. Once a bus unit that issued a livelock resolution request has managed to successfully issue its command, it deactivates its livelock resolution request. If all livelock resolution request signals are deactivated, then the control processor instructs the bus and all bus units to resume normal activity. On the other hand, if the control processor determines that a predetermined amount of time passes without any progress being made, it determines that a hang condition has occurred. | 06-25-2009 |
20100153647 | Cache-To-Cache Cast-In - A data processing system includes a first processing unit and a second processing unit coupled by an interconnect fabric. The first processing unit has a first processor core and associated first upper and first lower level caches, and the second processing unit has a second processor core and associated second upper and lower level caches. In response to a data request, a victim cache line is selected for castout from the first lower level cache. The first processing unit issues on the interconnect fabric a lateral castout (LCO) command that identifies the victim cache line to be castout from the first lower level cache and indicates that a lower level cache is an intended destination. In response to a coherence response indicating success of the LCO command, the victim cache line is removed from the first lower level cache and held in the second lower level cache. | 06-17-2010 |
20100235576 | Handling Castout Cache Lines In A Victim Cache - A victim cache memory includes a cache array, a cache directory of contents of the cache array, and a cache controller that controls operation of the victim cache memory. The cache controller, responsive to receiving a castout command identifying a victim cache line castout from another cache memory, causes the victim cache line to be held in the cache array. If the other cache memory is a higher level cache in the cache hierarchy of the processor core, the cache controller marks the victim cache line in the cache directory so that it is less likely to be evicted by a replacement policy of the victim cache, and otherwise, marks the victim cache line in the cache directory so that it is more likely to be evicted by the replacement policy of the victim cache. | 09-16-2010 |
20100235584 | Lateral Castout (LCO) Of Victim Cache Line In Data-Invalid State - A victim cache line having a data-invalid coherence state is selected for castout from a first lower level cache of a first processing unit. The first processing unit issues on an interconnect fabric a lateral castout (LCO) command identifying the victim cache line to be castout from the first lower level cache, indicating the data-invalid coherence state, and indicating that a lower level cache is an intended destination of the victim cache line. In response to a coherence response to the LCO command indicating success of the LCO command, the victim cache line is removed from the first lower level cache and held in a second lower level cache of a second processing unit in the data-invalid coherence state. | 09-16-2010 |
20100262784 | Empirically Based Dynamic Control of Acceptance of Victim Cache Lateral Castouts - A second lower level cache receives an LCO command issued by a first lower level cache on an interconnect fabric. The LCO command indicates an address of a victim cache line to be castout from the first lower level cache and indicates that the second lower level cache is an intended destination of the victim cache line. The second lower level cache determines whether to accept the victim cache line from the first lower level cache based at least in part on the address of the victim cache line indicated by the LCO command. In response to determining not to accept the victim cache line, the second lower level cache provides a coherence response to the LCO command refusing the identified victim cache line. In response to determining to accept the victim cache line, the second lower level cache updates an entry corresponding to the identified victim cache line. | 10-14-2010 |
20130055176 | SOFT HIERARCHY-BASED PHYSICAL SYNTHESIS FOR LARGE-SCALE, HIGH-PERFORMANCE CIRCUITS - In one embodiment, the invention is a method and apparatus for soft hierarchy-based synthesis for large-scale, high-performance circuits. One embodiment of a method for physically synthesizing a design of an integrated circuit includes compiling a logical description of the design into a flattened netlist, extracting a soft hierarchy from the flattened netlist, wherein the soft hierarchy defines a boundary on a die across which cells of the integrated circuit are permitted to move, and placing a cell of the integrated circuit on the die in accordance with the soft hierarchy. | 02-28-2013 |
Patent application number | Description | Published |
20120026972 | APPARATUS AND METHOD FOR SUPPORTING RANGE EXPANSION IN A WIRELESS NETWORK - A wireless network for communicating with a mobile station capable of operating in a range expansion mode. The wireless network comprises a macro-base station (BS) operable to communicate with the mobile station and a micro-base station (BS) in a coverage area associated with the macro-BS. The macro-BS transmits to the micro-BS a first control message indicating a range expansion (RE) capability of the mobile station. In response, the micro-BS transmits to the macro-BS PCFICH information associated with the micro-BS. The macro-BS transmits the PCFICH information to the mobile station and the mobile station uses the PCFICH information to perform a handover procedure to the micro-BS. | 02-02-2012 |
20120176926 | SECONDARY CARRIER ACTIVATION/DEACTIVATION METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A secondary carrier activation/deactivation method for activating/deactivating secondary carriers in addition to a primary carrier is provided for a mobile communication system supporting carrier aggregation. The method includes identifying, when a secondary carrier control message is received from a base station, carriers to be activated are deactivated, determining, when the message includes a secondary carrier activation command, whether a first time point has arrived, and executing, when the first time point arrives, predetermined first operations. The present invention is advantageous to avoid malfunctions in communication system supporting carrier aggregation by defining UE operations to be taken in SCell activation and deactivation. | 07-12-2012 |
20120176967 | RANDOM ACCESS METHOD AND APPARATUS OF UE IN MOBILE COMMUNICATION SYSTEM - A method and an apparatus for performing random access and uplink transmission of a User Equipment (UE) supporting Carrier Aggregation (CA) are provided. The method includes determining whether a Scheduling Request (SR) is pending, determining, when the SR is pending, whether an uplink transmission resource is available in a current Transmission Time Interval (TTI), determining, when the uplink transmission resource is not available, whether a Physical Uplink Control Channel (PUCCH) resource is configured for transmission of the SR, and initiating, when the PUCCH resource is not configured, a random access process in a primary cell. The random access method and apparatus of the present invention is advantageous to reduce the waste of transmission resources. | 07-12-2012 |
20120176979 | UPLINK TRANSMISSION POWER CONFIGURATION METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM - A method and an apparatus for configuring uplink transmission power and apparatus in a mobile communication system supporting downlink and uplink carrier aggregation are provided. The method includes determining a per-terminal maximum transmission power and per-serving cell maximum transmission powers based on ΔT | 07-12-2012 |
20120269140 | DOWNLINK CONTROL SIGNALING FOR COORDINATED MULTIPOINT TRANSMISSION - A base station performs a method for coordinated multipoint (CoMP) transmission to a plurality of user equipments (UEs). The method includes transmitting a first and a second physical downlink control channel (PDCCH) to a user equipment (UE) in a subframe, wherein the first PDCCH has a first downlink control information (DCI) format and the second PDCCH has a second DCI format. The method also includes transmitting a first transport block of at least one CoMP transmission to the UE in the subframe according to the first PDCCH, the at least one CoMP transmission comprising the first transport block from the base station and a second transport block from a second base station, wherein the second transport block is scheduled according to the second PDCCH. | 10-25-2012 |
20120300714 | METHODS AND APPARATUS FOR RANDOM ACCESS PROCEDURES WITH CARRIER AGGREGATION FOR LTE-ADVANCED SYSTEMS - An eNodeB is configured to perform a method for a random access procedure in an LTE-Advanced system. The method includes receiving from a user equipment a random access preamble message on a physical random access channel (PRACH) on a first cell, the PRACH associated with a random access radio network temporary identifier (RA-RNTI). The method also includes transmitting to the user equipment a random access response (RAR) message on a second cell. At least one of the RAR message and the RA-RNTI includes information configured to allow the user equipment to identify a target Timing Advance Group (TAG) or cell associated with the RAR message. | 11-29-2012 |
20130044665 | METHODS AND SYSTEMS FOR DYNAMIC SWITCHING, UPLINK POWER CONTROL AND SYNCHRONIZATION IN WIRELESS NETWORKS - Dynamic switching of uplink power control and synchronization in wireless networks involves switching a user equipment (UE) from a transmission point common (TP-common) mode to a transmission point specific (TP-specific) mode in a wireless network. The UE transmits at a high power level in a TP-common mode to compensate for a larger path loss between the UE and the TPs and at a low power level in a TP-specific mode to save battery power based on a smaller path loss between the UE and a specific, nearby TP. | 02-21-2013 |
20130066482 | APPARATUS AND METHOD FOR EXECUTING ENERGY DEMAND RESPONSE PROCESS IN AN ELECTRICAL POWER NETWORK - A demand response (DR) architecture performs processes for use in an electrical power network. The DR architecture performs a method for selecting a process to use for scheduling devices. The method includes receiving, by a demand response controller, demand response specific input. The method includes determining a process to use to schedule device running time patterns, based on the received input. The method further includes executing the determined process. | 03-14-2013 |
20130077513 | CoMP MEASUREMENT SYSTEM AND METHOD - According to one embodiment, a subscriber station configured to communicate with one or more base stations in a wireless communication network. The subscriber station is configured to receive, from the network, information associated with one or more of the TPs that are candidates for coordinated multipoint (CoMP) transmission with the subscriber station, measure a plurality of channel quality values for each of the one or more TPs, and report to the network, the measured channel quality values. | 03-28-2013 |
20130077569 | APPARATUS AND METHOD FOR UPLINK TRANSMISSION IN WIRELESS COMMUNICATION SYSTEMS - An apparatus and method for a User Equipment in a wireless network including at least one Base Station (BS) are provided. The method includes receiving an Information Element (IE) for configuring at least one of a PUSCH power control method and a PUSCH DMRS generation method from the BS, determining a state of the IE, and transmitting a PUSCH and a DMRS for the PUSCH according to the state of the IE. A transmission power of the PUSCH is controlled and a base sequence for the PUSCH DMRS is generated according to the state of the IE. When the state of the IE indicates a first state, the transmission power of the PUSCH is determined according to a first power control equation. When the state of the IE indicates a second state, the transmission power of the PUSCH is determined according to a second power control equation. | 03-28-2013 |
20130083682 | DOWNLINK TIMING REFERENCE FOR COORDINATED MULTIPOINT COMMUNICATION - A method, apparatus and a system are disclosed. A method of operating a user equipment includes receiving one or more signals from one or more transmission points for a coordinated multi-point (CoMP) transmission. The method also includes identifying a timing reference for receiving the coordinated multi-point (CoMP) transmission as a time when a signal is first received from one of the transmission points. | 04-04-2013 |
20130114535 | REFERENCE SIGNAL FOR TIME AND/OR FREQUENCY TRACKING IN A WIRELESS NETWORK - A method and an apparatus in a base station are capable of including a tracking reference signal (TRS) in a downlink subframe. The method includes generating a TRS subframe by including the TRS in the downlink subframe at a frequency density of at least one resource element per six resource elements in the TRS subframe. Additionally, the method includes transmitting the TRS subframe at a periodicity among other subframes not including the TRS. | 05-09-2013 |
20130114574 | APPARATUS AND METHOD FOR DEFINING TIMING REFERENCE FOR SECONDARY CELLS IN A SECONDARY TIMING ADVANCE GROUP - A user equipment (UE) is configured to perform a method for determining a timing reference for a secondary cell (SCell) in a secondary timing advance group (sTAG). The method includes selecting a SCell among a plurality of SCells within a sTAG as an uplink timing reference cell based on a predefined rule that is known at the UE and an eNB in communication with the UE. The method also includes receiving a downlink carrier from the selected SCell and determining, from the downlink carrier, a downlink timing used as a reference for an uplink transmission timing. | 05-09-2013 |
20130136098 | APPARATUS AND METHOD FOR MACHINE-TYPE COMMUNICATIONS - A network and user equipment are configured to support machine type communications is provided. The UE includes processing circuitry to process a physical broadcast channel (PBCH) to acquire at least one system information block (SIB). The processing circuitry also processes the at least one SIB to determine a location of a lite SIB (SIB-L). The processing circuitry determines a location of a lite physical downlink control channel (L-PBCCH) from the SIB-L. | 05-30-2013 |
20130182687 | APPARATUS AND METHOD FOR CONTROLLING SECONDARY CELL UPLINK SYNCHRONIZATION STATES - A user equipment (UE) is configured to perform a method for controlling synchronization with a secondary cell (SCell). The method includes receiving a physical downlink control channel (PDCCH) order from an eNodeB associated with an SCell. The method also includes, in response to receiving the PDCCH order, transitioning from a first state where the UE considers the SCell in sync for an uplink transmission to a second state where the UE considers the SCell out of sync for the uplink transmission. | 07-18-2013 |
20130208689 | METHOD AND DEVICE FOR ACTIVATING SECONDARY CARRIER IN WIRELESS COMMUNICATION SYSTEM FOR USING CARRIER AGGREGATION TECHNIQUE - The present invention proposes a method for activating secondary carriers in addition to the primary carrier in a wireless communication system supporting carrier aggregation technology. Through the present invention, the UE sorts the operations for activating an SCell into two groups that are executed at different timings, thereby facilitating communication without malfunctioning. | 08-15-2013 |
20130229953 | APPARATUS AND METHOD FOR INDICATING SYNCHRONIZATION SIGNALS IN A WIRELESS NETWORK - A base station in a heterogeneous network is configured to communicate with a plurality of base stations via a backhaul link and configured to communicate with a plurality of subscriber stations. The base station includes a transmit path configured to transmit data, reference signals, synchronization signals and control elements to at least one of the plurality of subscriber stations. The base station also includes processing circuitry configured to map primary synchronization signals (PSS) and secondary synchronization signals (SSS) onto each of a carrier of a first carrier type and a carrier of a second carrier type. The PSS and SSS on the second carrier type are mapped onto different time locations than in the first carrier type. In addition, the PSS/SSS are mapped onto consecutive resource elements (REs) on each of the carrier of the first type and the carrier of the second type. | 09-05-2013 |
20130235780 | METHOD AND APPARATUS FOR OPTIMIZING POWER CONSUMPTION OF A TERMINAL IN A MOBILE COMMUNICATION SYSTEM - The present invention relates to a method and to an apparatus for optimizing the power consumption of a terminal in a mobile communication system. The method for optimizing power consumption of a terminal in a mobile communication system comprises: a determination step of determining whether there is a need for changing a configuration for a discontinuous reception operation of the terminal; and a transmission step of transmitting, to a base station, a request message for a change in the discontinuous reception operation, if it is determined that the change is needed. | 09-12-2013 |
20130250878 | APPARATUS AND METHOD FOR MACHINE-TYPE COMMUNICATIONS - For use in a wireless network, a method for supporting a Machine-Type Communication (MTC) User Equipment (UE) is provided. The method comprises transmitting an MTC-specific Master Information Block (M-MIB) carrying information specific to a User Equipment (UE), via a MTC Physical Broadcast Channel (M-PBCH) to the MTC UE. The M-PBCH is transmitted in a M-PBCH subframe being different from a Physical Broadcast Channel (PBCH) subframe in which a PBCH is transmitted. | 09-26-2013 |
20130308596 | METHOD AND APPARATUS FOR TRANSMISSION OF PHYSICAL CHANNEL IN DwPTS - For use in a wireless network, a method for scheduling a Downlink Pilot Time Slot (DwPTS) subframe is provided. The method comprises expanding Physical Resource Blocks (PRBs) in a subframe prior to a DwPTS subframe to include resource elements (REs) of the DwPTS subframe, a number of OFDM symbols of the DwPTS subframe being less than or equal to a threshold OFDM symbol number. The method further comprises facilitating for a UE to demodulate REs in a DwPTS subframe based on DeModulation Reference Signals (DMRS) transmitted in a downlink subframe prior to the DwPTS subframe. | 11-21-2013 |
20140023055 | METHOD AND DEVICE FOR CARRIER ACTIVATION IN CARRIER AGGREGATION SYSTEM - The present invention relates to a method and a device for cell activation in a carrier aggregation system, and the method for activating a cell of a terminal according to one embodiment of the present invention comprises: a step for receiving an activation message of a first cell; a step for activating the first cell when the message of the first cell is received; an information obtaining step for obtaining uplink activation information of the first cell; and a transmission determination step for determining whether to execute an uplink transmission according to the uplink activation information. According to an embodiment of the present invention, efficient carrier management plan can be provided. | 01-23-2014 |
20140092812 | METHOD AND APPARATUS FOR APPLYING A TIME ALIGNMENT TIMER IN A WIRELESS COMMUNICATION SYSTEM USING A CARRIER AGGREGATION TECHNIQUE - Operation of a terminal for determining which time alignment timer is applied to a certain condition when specific timers operate for each carrier-wave group in the event a wireless communication system using carrier aggregation techniques. A terminal performs communication without malfunctions using a timer suitable for a certain condition. The terminal operates the timer by receiving, from a base station, a message including a timing advance command and an index on a timing advance group (TAG), operating the timer for the TAG, the index has a value of 00 when the TAG includes a first cell. A terminal operates a timer by operating a first timer for a TAG including a first cell, operating a second timer upon receipt of a timing advance command for a second TAG that does not include the first cell, and, if the first timer has expired, deeming the second timer to also be expired. | 04-03-2014 |
20140211744 | SECONDARY CARRIER ACTIVATION/DEACTIVATION METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A method for activating/deactivating secondary carriers of a User Equipment (UE) in a mobile communication system supporting carrier aggregation is provided. The method comprises, receiving a control message including an activation/deactivation Control Element (CE) in a first sub-frame from a Base station, identifying an activation command or a deactivation command of at least one secondary carrier based on the control message, determining whether a current sub-frame is a second sub-frame or not, performing at least one first operation for the at least one secondary carrier in a second sub-frame, and performing, when the activation/deactivation CE indicates deactivation of the at least one secondary carrier, at least one second operation for the at least one secondary carrier no later than the second sub-frame. | 07-31-2014 |
20140307670 | RANDOM ACCESS METHOD AND APPARATUS OF UE IN MOBILE COMMUNICATION SYSTEM - A method and an apparatus for performing random access and uplink transmission of a User Equipment (UE) supporting Carrier Aggregation (CA) are provided. The method includes determining whether a Scheduling Request (SR) is pending, determining, when the SR is pending, whether an uplink transmission resource is available in a current Transmission Time Interval (TTI), determining, when the uplink transmission resource is not available, whether a Physical Uplink Control Channel (PUCCH) resource is configured for transmission of the SR, and initiating, when the PUCCH resource is not configured, a random access process in a primary cell. The random access method and apparatus of the present invention is advantageous to reduce the waste of transmission resources. | 10-16-2014 |
20140328284 | SECONDARY CARRIER ACTIVATION/DEACTIVATION METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A method for activating/deactivating secondary carriers of a User Equipment (UE) in a mobile communication system supporting carrier aggregation is provided. The method comprises, receiving a control message including an activation/deactivation Control Element (CE) in a first sub-frame from a Base station, identifying an activation command or a deactivation command of at least one secondary carrier based on the control message, determining whether a current sub-frame is a second sub-frame or not, performing at least one first operation for the at least one secondary carrier in a second sub-frame, and performing, when the activation/deactivation CE indicates deactivation of the at least one secondary carrier, at least one second operation for the at least one secondary carrier no later than the second sub-frame. | 11-06-2014 |
20150103771 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA USING PLURALITY OF CARRIERS IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and apparatus for transmitting and receiving data using a plurality of carriers in a wireless communication system. The method includes the steps of: receiving secondary serving cell (SCell) setting information for setting an SCell from a base station; determining whether the secondary SCell belongs to a primary set or to a non-primary set; and, according to a results of the determination, setting forward and reverse initial states as an active or inactive state. | 04-16-2015 |
20150131596 | SECONDARY CARRIER ACTIVATION/DEACTIVATION METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A method for activating/deactivating secondary carriers of a User Equipment (UE) in a mobile communication system supporting carrier aggregation is provided. The method comprises, receiving a control message including an activation/deactivation Control Element (CE) in a first sub-frame from a Base station, identifying an activation command or a deactivation command of at least one secondary carrier based on the control message, determining whether a current sub-frame is a second sub-frame or not, performing at least one first operation for the at least one secondary carrier in a second sub-frame, and performing, when the activation/deactivation CE indicates deactivation of the at least one secondary carrier, at least one second operation for the at least one secondary carrier no later than the second sub-frame. | 05-14-2015 |
20150139170 | METHOD AND APPARATUS OF ACTIVATING/DEACTIVATING SECONDARY CARRIERS IN MOBILE COMMUNICATION SYSTEM USING CARRIER AGGREGATION - A method for activating/deactivating secondary carriers of a User Equipment (UE) in a mobile communication system supporting carrier aggregation is provided. The method comprises, receiving a control message including an activation/deactivation Control Element (CE) in a first sub-frame from a Base station, identifying an activation command or a deactivation command of at least one secondary carrier based on the control message, determining whether a current sub-frame is a second sub-frame or not, performing at least one first operation for the at least one secondary carrier in a second sub-frame, and performing, when the activation/deactivation CE indicates deactivation of the at least one secondary carrier, at least one second operation for the at least one secondary carrier no later than the second sub-frame. | 05-21-2015 |
20150139171 | METHOD AND APPARATUS OF ACTIVATING/DEACTIVATING SECONDARY CARRIERS IN MOBILE COMMUNICATION SYSTEM USING CARRIER AGGREGATION - A method for activating/deactivating secondary carriers of a User Equipment (UE) in a mobile communication system supporting carrier aggregation is provided. The method comprises, receiving a control message including an activation/deactivation Control Element (CE) in a first sub-frame from a Base station, identifying an activation command or a deactivation command of at least one secondary carrier based on the control message, determining whether a current sub-frame is a second sub-frame or not, performing at least one first operation for the at least one secondary carrier in a second sub-frame, and performing, when the activation/deactivation CE indicates deactivation of the at least one secondary carrier, at least one second operation for the at least one secondary carrier no later than the second sub-frame. | 05-21-2015 |
20150223090 | MEASUREMENT IN MBMS - Drive testing for network optimization has been supplemented by the use of information measuring radio conditions collected by mobile terminals (i.e. UEs). To improve the user experience of multicast and broadcast services based on cellular telecommunications networks, such as MBMS and eMBMS, a mechanism is described that adapts UE-based reporting of measurement reports to multicast and broadcast services. | 08-06-2015 |
20150256301 | METHOD AND DEVICE FOR ACTIVATING SECONDARY CARRIER IN WIRELESS COMMUNICATION SYSTEM FOR USING CARRIER AGGREGATION TECHNIQUE - The present invention proposes a method for activating secondary carriers in addition to the primary carrier in a wireless communication system supporting carrier aggregation technology. Through the present invention, the UE sorts the operations for activating an SCell into two groups that are executed at different timings, thereby facilitating communication without malfunctioning. | 09-10-2015 |
20150271746 | NETWORK SELECTION AND RANDOM ACCESS METHOD AND APPARATUS OF MACHINE-TYPE COMMUNICATION USER EQUIPMENT IN MOBILE COMMUNICATION SYSTEM - A network selection, a random access method, and an apparatus of a Machine Type Communication (MTC) User Equipment (UE) for use in a Long Term Evolution (LTE) are provided. A cell selection method of an MTC terminal of the present disclosure includes receiving a message from a base station forming a cell, determining whether the message includes an MTC supportability indicator, and barring, when the message includes no MTC supportability indicator, scanning a frequency used in communication with the base station during a determined period. | 09-24-2015 |
20150351122 | UPLINK TRANSMISSION POWER CONFIGURATION METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM - A method and an apparatus for configuring uplink transmission power and apparatus in a mobile communication system supporting downlink and uplink carrier aggregation are provided. The method includes determining a per-terminal maximum transmission power and per-serving cell maximum transmission powers based on ΔT | 12-03-2015 |
20160007327 | METHOD AND APPARATUS OF ACTIVATING/DEACTIVATING SECONDARY CARRIERS IN MOBILE COMMUNICATION SYSTEM USING CARRIER AGGREGATION - A method for activating/deactivating secondary carriers of a User Equipment (UE) in a mobile communication system supporting carrier aggregation is provided. The method comprises, receiving a control message including an activation/deactivation Control Element (CE) in a first sub-frame from a Base station, identifying an activation command or a deactivation command of at least one secondary carrier based on the control message, determining whether a current sub-frame is a second sub-frame or not, performing at least one first operation for the at least one secondary carrier in a second sub-frame, and performing, when the activation/deactivation CE indicates deactivation of the at least one secondary carrier, at least one second operation for the at least one secondary carrier no later than the second sub-frame. | 01-07-2016 |
20160029309 | METHOD AND APPARATUS FOR OPTIMIZING POWER CONSUMPTION OF A TERMINAL IN A MOBILE COMMUNICATION SYSTEM - The present invention relates to a method and to an apparatus for optimizing the power consumption of a terminal in a mobile communication system. The method for optimizing power consumption of a terminal in a mobile communication system comprises: a determination step of determining whether there is a need for changing a configuration for a discontinuous reception operation of the terminal; and a transmission step of transmitting, to a base station, a request message for a change in the discontinuous reception operation, if it is determined that the change is needed. | 01-28-2016 |
20160029310 | METHOD AND APPARATUS FOR OPTIMIZING POWER CONSUMPTION OF A TERMINAL IN A MOBILE COMMUNICATION SYSTEM - The present invention relates to a method and to an apparatus for optimizing the power consumption of a terminal in a mobile communication system. The method for optimizing power consumption of a terminal in a mobile communication system comprises: a determination step of determining whether there is a need for changing a configuration for a discontinuous reception operation of the terminal; and a transmission step of transmitting, to a base station, a request message for a change in the discontinuous reception operation, if it is determined that the change is needed. | 01-28-2016 |
20160029317 | METHOD AND APPARATUS FOR OPTIMIZING POWER CONSUMPTION OF A TERMINAL IN A MOBILE COMMUNICATION SYSTEM - The present invention relates to a method and to an apparatus for optimizing the power consumption of a terminal in a mobile communication system. The method for optimizing power consumption of a terminal in a mobile communication system comprises: a determination step of determining whether there is a need for changing a configuration for a discontinuous reception operation of the terminal; and a transmission step of transmitting, to a base station, a request message for a change in the discontinuous reception operation, if it is determined that the change is needed. | 01-28-2016 |
20160037451 | METHOD AND APPARATUS FOR OPTIMIZING POWER CONSUMPTION OF A TERMINAL IN A MOBILE COMMUNICATION SYSTEM - The present invention relates to a method and to an apparatus for optimizing the power consumption of a terminal in a mobile communication system. The method for optimizing power consumption of a terminal in a mobile communication system comprises: a determination step of determining whether there is a need for changing a configuration for a discontinuous reception operation of the terminal; and a transmission step of transmitting, to a base station, a request message for a change in the discontinuous reception operation, if it is determined that the change is needed. | 02-04-2016 |
20160037452 | METHOD AND APPARATUS FOR OPTIMIZING POWER CONSUMPTION OF A TERMINAL IN A MOBILE COMMUNICATION SYSTEM - The present invention relates to a method and to an apparatus for optimizing the power consumption of a terminal in a mobile communication system. The method for optimizing power consumption of a terminal in a mobile communication system comprises: a determination step of determining whether there is a need for changing a configuration for a discontinuous reception operation of the terminal; and a transmission step of transmitting, to a base station, a request message for a change in the discontinuous reception operation, if it is determined that the change is needed. | 02-04-2016 |
20160050713 | METHOD AND APPARATUS FOR OPTIMIZING POWER CONSUMPTION OF A TERMINAL IN A MOBILE COMMUNICATION SYSTEM - The present invention relates to a method and to an apparatus for optimizing the power consumption of a terminal in a mobile communication system. The method for optimizing power consumption of a terminal in a mobile communication system comprises: a determination step of determining whether there is a need for changing a configuration for a discontinuous reception operation of the terminal; and a transmission step of transmitting, to a base station, a request message for a change in the discontinuous reception operation, if it is determined that the change is needed. | 02-18-2016 |
Patent application number | Description | Published |
20150181575 | METHODS AND APPARATUS FOR ENHANCED COVERAGE TRANSMISSION FOR LTE ADVANCED - A system and method for communicating with a coverage enhanced user equipment (UE) is provided. A base station transmits system information (SI) to the UE in a MTC framework. The MTC framework comprising intermittent transmission periods of a number of MTC SI transmission blocks. The MTC SI transmission block includes a MTC Master Information Block (MIB) and a number of MTC System Information Blocks (SIBs). Two consecutive transmissions of the MTC SI are separated by N number of frames, and N is an integer number. | 06-25-2015 |
20150189574 | METHODS FOR DORMANT CELL SIGNALING FOR ADVANCED CELLULAR NETWORK - User equipment for wireless communication with at least one base station includes a transceiver operable to communicate with the at least one base station by transmitting radio frequency signals to the at least one base station and by receiving radio frequency signals from the at least one base station. The transceiver is configured to receive a discovery signal from a base station of the at least one base station, the discovery signal comprising a discovery signal identifier. The transceiver is also configured to receive a synchronization signal or reference signal, the synchronization signal or the reference signal comprising a physical cell identifier. The user equipment also includes processing circuitry configured to determine whether the discovery cell identifier matches the physical cell identifier. The processing circuitry is also configured to, responsive to the discovery cell identifier matching the physical cell identifier, identifying that the base station is active or in coverage | 07-02-2015 |
20150201383 | UPLINK TRANSMISSIONS FOR DUAL CONNECTIVITY - Methods and apparatus are provided for a User Equipment (UE) configured by a Master enhanced NodeB (MeNB) for operation with dual connectivity to a Secondary eNB (SeNB) to determine a power for transmission to the MeNB and a power for transmission to the SeNB in a subframe when a total power the UE determines according to power control processes for transmission to the MeNB and for transmission to the SeNB exceeds a maximum transmission power in the subframe. Methods and apparatus are also provided for the MeNB to select one or more antenna ports the UE uses to transmit to the MeNB and inform the selected antenna ports to the UE. | 07-16-2015 |
20150208366 | ADAPTATIONS OF DUAL CONNECTIVITY OPERATION TO UE CAPABILITY - Methods and apparatus are provided for a User Equipment (UE) configured by a Master enhanced NodeB (MeNB) for operation with dual connectivity to a Secondary eNB (SeNB) to transmit acknowledgement information when the UE is power limited and for a respective eNB to determine a UE power limitation. Methods and apparatus are also provided for the UE, the MeNB, and the SeNB to adjust operation according to a partitioning of a UE capability between the MeNB and the SeNB. The UE capability can be a transmission power, a soft buffer size, a reception or a transmission of a number of data transport block bits, or a number of decoding operations. | 07-23-2015 |
20150263796 | CHANNEL STATE INFORMATION FOR REPORTING AN ADVANCED WIRELESS COMMUNICATIONS SYSTEM - Multi-user channel quality, information (MU-CQI) indicating demodulation interference at the user equipment between co-channel signals within a multi-user, multiple input multiple output (MU-MIMO) transmission is derived utilizing a demodulation interference measurement resource (DM-IMR) and based upon a demodulation reference signal (DMRS). Derivation of signal, interference, and signal-plus-interference parts of the MU-CQI is configurable, as is the MU-CQI reporting, selection of physical resource blocks (PRBs) to be employed, and periods, subframes and/or antenna ports for determining MU-CQI. The interfering transmission may originate from the same transmission point as the desired signal or from a different transmission point. | 09-17-2015 |
20150264588 | METHODS AND APPARATUS FOR SYNCHRONIZATION IN DEVICE-TO-DEVICE COMMUNICATION NETWORKS - A Device to Device (D2D) user equipment (UE) is configured to support synchronization (sync) in a D2D network. The D2D UE includes an antenna configured to communicate via a D2D communication. The D2D UE also includes processing circuitry configured to communicate with a second portable terminal via the D2D communication. The processing circuitry is further configured to: derive a transmission (TX) timing from a synchronization (sync) source; and transmit a D2D Sync Signal (D2DSS) and Physical D2D Sync Channel (PD2DSCH) configured to indicate a hop number from the sync source. The hop number is indicated via the preamble sequence set and the indicator in PD2DSCH. | 09-17-2015 |
20150264592 | METHODS AND APPARATUS FOR DISCOVERY AND MEASUREMENT IN CELLULAR NETWORKS - Adaptation of measurement procedures for cell detection and association provide more accurate and frequent reports for use by the network, to enhance cell association. A user equipment receives, within a configured measurement bandwidth, orthogonal frequency division multiplexing symbols comprising discovery reference signals (DRS). For subframes in which the DRS are transmitted, a discovery reference signal received quality (D-RSRQ) is determined from the DRS within the received symbols as a ratio of discovery reference signal received power (D-RSRP) to carrier discovery received signal strength indicator (D-RSSI), where the D-RSRP is measured in symbols containing DRS resource elements and the D-RSSI is measured in all symbols in subframes containing the DRS. For a UE configured to also measure common reference signals, non-DRS measurements are suspended upon deactivation of a secondary cell, and measurement timing of the DRS during a deactivation period is based on a measurement timing parameter. | 09-17-2015 |
20150271861 | METHODS AND APPARATUS FOR DEVICE TO DEVICE SYNCHRONIZATION PRIORITY - A Device to Device (D2D) user equipment (UE) is configured to support synchronization in a D2D network. The D2D UE includes an antenna configured to communicate via a D2D communication. The D2D UE also includes processing circuitry configured to enter a communication Mode 2 when certain conditions are met. The certain conditions include: when a first timer (T | 09-24-2015 |
20150365931 | HARQ PROCEDURE AND FRAME STRUCTURE FOR LTE CELLS ON UNLICENSED SPECTRUM - A user equipment (UE) is configured to perform a Hybrid Automatic Repeat Request (HARQ) in an un-licensed system. The UE includes at least one antenna configured to communicate with a base station. The UE also includes processing circuitry. The processing circuitry is configured to: send and receive data through the at least one antenna, in response to failing to decode a transport block transmitted by a first downlink carrier, transmit a negative acknowledgement message to the base station, and receive a re-transmission of the transport block from a second downlink carrier. The first downlink carrier comprises a unlicensed spectrum carrier and the second downlink carrier is different from the first downlink carrier. | 12-17-2015 |
20150372728 | OFDM SIGNAL COMPRESSION - Methods and apparatuses for fronthaul signal compression and decompression. An apparatus for fronthaul signal compression includes a receiver, signal processing circuitry, and a fronthaul interface. The receiver is configured to receive one or more signals comprising complex samples. The signal processing circuitry is configured to construct vectors representing at least a portion of the complex samples; map the vectors to codeword indices in a vector quantization codebook; and process the codeword indices into an output signal. The fronthaul interface is configured to transmit the output signal via a fronthaul communication link of a wireless network. The vectors may be constructed according to the selected vectorization method. The vector quantization codebook may be selected from a set of vector quantization codebooks generated based on training signals and signaled. | 12-24-2015 |
20160029337 | APPARATUS AND METHOD FOR DEFINING TIMING REFERENCE FOR SECONDARY CELLS IN A SECONDARY TIMING ADVANCE GROUP - A user equipment (UE) is configured to perform a method for determining a timing reference for a secondary cell (SCell) in a secondary timing advance group (sTAG). The method includes selecting a SCell among a plurality of SCells within a sTAG as an uplink timing reference cell based on a predefined rule that is known at the UE and an eNB in communication with the UE. The method also includes receiving a downlink carrier from the selected SCell and determining, from the downlink carrier, a downlink timing used as a reference for an uplink transmission timing. | 01-28-2016 |
20160044665 | METHODS AND APPARATUS FOR RESOURCE ALLOCATION FOR D2D COMMUNICATIONS - A user equipment, apparatus, and method are provided for wireless communication in a hybrid communication network. A method includes transmitting, by a first user equipment (UE), a scheduling request to a first eNodeB (eNB). The scheduling request indicates that the UE is capable of device-to-device (D2D) communications. The method includes receiving, by the first UE, a first scheduling assignment (SA) from the first eNB. The first SA indicates resources to be used by the first UE for device-to-device (D2D) communications with the first eNB. The method includes communicating, by the first UE, with the first eNB according to the first SA. | 02-11-2016 |
20160050667 | COMMUNICATION ON LICENSED AND UNLICENSED BANDS - Methods and apparatus are provided for communication on licensed carriers and on unlicensed carriers. The base station can perform a clear channel assignment (CCA) to reserve the unlicensed carrier and enable transmissions from user equipments (UEs) on the unlicensed carrier. The base station can configure random access preamble transmission from a UE on the unlicensed carrier. One or more UEs can perform CCA and reserve the unlicensed carrier using transmissions of reference signals. A UE can indicate to the base station a CCA outcome through a licensed carrier. A UE can also experience large propagation loss and may not be able to correctly perform CCA. | 02-18-2016 |
20160073366 | CELL DETECTION, SYNCHRONIZATION AND MEASUREMENT ON UNLICENSED SPECTRUM - Methods and apparatuses for cell detection, synchronization and measurement on unlicensed spectrum. A method for receiving a discovery reference signal (DRS) includes identifying, based on a DRS measurement timing configuration (DMTC), a DRS detection/measurement gap duration and a periodicity; and listening for the DRS on a carrier in an unlicensed spectrum during the identified gap duration at the identified periodicity. An apparatus for an eNodeB associated with a cell includes a controller and a transceiver. The controller is configured to configure a DMTC including a DRS detection/measurement gap duration and periodicity. The transceiver is configured to transmit the DRS on a carrier in an unlicensed spectrum during the gap duration at the periodicity. | 03-10-2016 |