Patent application number | Description | Published |
20110103331 | METHOD AND APPARATUS TO ACTIVATE COMPONENT CARRIERS IN A WIRELESS COMMUNICATION NETWORK - A method and apparatus are disclosed to activate component carriers in a wireless communication system. The method includes sending a dedicated resource control (RRC) signal to configure a user equipment with a plurality of component carriers for carrier aggregation. The method further includes sending an activation signal to the UE to activate a component carrier. The method also includes using the activation signal to request the UE to initiate a random access procedure on the activated component carrier to update the timing advance for uplink transmissions. | 05-05-2011 |
20110103332 | METHOD AND APPARATUS TO TRIGGER A RANDOM ACCESS PROCEDURE FOR CARRIER AGGREGRATION IN A WIRELESS COMMUNICATION NETWORK - A method and apparatus for a base station to trigger a random access procedure for carrier aggregation in a wireless communication system are disclosed. The method includes sending a dedicated radio resource control signal to configure a user equipment with a plurality of secondary component carriers (SCCs) that include uplink SCCs and/or downlink SCCs for carrier aggregation. The method further includes sending an activation signal to the user equipment to activate a configured downlink SCC. The method also includes transmitting a physical downlink control channel order only on the downlink primary CC to trigger a random access procedure. | 05-05-2011 |
20110142095 | METHOD AND APPARATUS FOR PERIODIC SOUNDING REFERENCE SIGNAL TRANSMISSION FROM MULTIPLE ANTENNAS IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting sounding reference signals from a user equipment having multiple antennas is disclosed. The user equipment may concurrently send two periodic sounding reference signals. A first sounding reference signal is sent from a single antenna. A second sounding reference signal is sent from multiple antennas. Transmission of the sounding reference signal from multiple antennas is triggered when the user equipment receives activation signal from the network. | 06-16-2011 |
20110159867 | METHOD AND APPARATUS TO ALLOCATE RANDOM ACCESS CHANNEL (RACH) RESOURCES FOR CARRIER AGGREGATION IN A WIRELESS COMMUNICATION NETWORK - A method and apparatus for an eNodeB (eNB) are disclosed to allocate random access channel (RACH) resources in a wireless communication system. The method includes configuring a user equipment (UE) with an uplink (UL) component carrier (CC) set and a downlink (DL) component carrier set for carrier aggregation (CA). The method further includes pairing an uplink component carrier that has random access channel (RACH) resources and that is in the uplink component carrier set with a downlink component carrier in the downlink component carrier set for random access. The method also includes receiving a random access preamble message on the UL CC from the UE and transmitting a random access response message on the paired DL CC in response to reception of the random access preamble message during a random access procedure. | 06-30-2011 |
20110170500 | METHOD AND APPARATUS FOR HANDLING SEMI-PERSISTENT TRANSMISSION RESOURCES IN WIRELESS COMMUNICATION SYSTEM - A method for handling semi-persistent transmission resources in a network terminal of a wireless communication system is disclosed. The wireless communication system supports carrier aggregation and semi-persistent scheduling (SPS). Carrier aggregation enables a user equipment (UE) of the wireless communication system to perform transmission and/or reception using multiple carriers. The method includes steps of establishing an RRC connection via a cell containing an uplink carrier and a downlink carrier, configuring at least one downlink carrier to the UE via a first RRC message, and transmitting a physical downlink control channel (PDCCH) signaling addressed to an SPS cell radio network temporary identifier of the UE, to configure or reconfigure a semi-persistent transmission resource to the UE or to trigger an SPS retransmission. | 07-14-2011 |
20110274057 | METHOD AND APPARATUS FOR COMPONENT CARRIER DEACTIVATION IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for component carrier deactivation in a user equipment (UE) of a wireless communication system includes receiving a Radio Resource Control (RRC) message for configuring carrier aggregation (CA) to the UE, and flushing all uplink hybrid automatic repeat-request (HARQ) buffers of the HARQ entity corresponding to an uplink (UL) CC when a linked downlink (DL) CC which provides a physical downlink control channel (PDCCH) scheduling for the UL CC is deactivated. | 11-10-2011 |
20120026982 | METHOD FOR IMPROVING HIGH-SPEED DOWNLINK OPERATION IN CELL_FACH STATE FOR A WIRELESS COMMUNICATIONS SYSTEM AND RELATED APPARATUS - A method of improving a high-speed downlink operation in CELL_FACH state for a network terminal of a wireless communications system includes using a first function but not using a second function when a user equipment, hereinafter called UE, initiates a cell update procedure. The network terminal wirelessly communicates with the UE, and the network terminal and the UE both support the high-speed downlink operation in CELL_FACH state. The first function is used for allocating a dedicated HS-DSCH radio network transaction identifier (H-RNTI) to the UE, so as to manage the UE to perform the high-speed downlink operation in CELL_FACH based on the dedicated H-RNTI. The second function is used for not allocating the dedicated H-RNTI to the UE. | 02-02-2012 |
20120057539 | METHOD AND APPARATUS FOR HYBRID AUTOMATIC REPEAT REQUEST IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for handling Hybrid Automatic Repeat reQuest (HARQ) retransmission in a User Equipment (UE) includes being configured with at least one Secondary Cell (SCell), sending an UpLink (UL) transmission corresponding to an uplink grant, and setting a HARQ FEEDBACK variable corresponding to the UL transmission to Acknowledgement (ACK) if a HARQ feedback reception corresponding to the UL transmission is prohibited due to RF retuning. | 03-08-2012 |
20120069782 | METHOD AND APPARATUS FOR IMPROVING DRX IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for handling discontinuous reception (DRX) configuration in a network of a wireless communication system includes configuring DRX cycles of a DRX function in a user equipment (UE) to include a first DRX cycle, a second DRX cycle having a value greater than a value of the first DRX cycle, and a third DRX cycle having a value greater than the value of the second DRX cycle for the UE to switch the DRX cycle between the first DRX cycle, the second DRX cycle and the third DRX cycle in a Radio Resource Control Connected (RRC_CONNECTED) mode. | 03-22-2012 |
20120082107 | METHOD AND APPARATUS FOR IMPLICIT SCELL DEACTIVATION IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for Secondary Cell (SCell) deactivation in a wireless communication system includes initiating a Random Access (RA) procedure associated with a SCell, and not implicit deactivating the SCell when the RA procedure associated with the SCell is initiated or the RA procedure associated with the SCell is ongoing. | 04-05-2012 |
20120106430 | METHOD AND APPARATUS FOR ENHANCING RECEIVING EFFICIENCY OF AN MULTIMEDIA BROADCAST MULTICAST SERVICE IN A WIRELESS COMMUNICATIONS SYSTEM - A method for enhancing receiving efficiency of a multimedia broadcast multicast service, know as MBMS, in a wireless communications system includes setting an indicator for indicating whether an MBMS service is transmitted on an MBSFN, an abbreviation of MBMS over a Single Frequency Network, carrier or not, and sending the indicator to a user equipment of the wireless communications system. | 05-03-2012 |
20120106510 | METHOD AND APPARATUS FOR SECONDARY CELL RELEASE DURING HANDOVER IN A WIRELESS COMMUNICATION SYSTEM - Methods and an apparatus for Secondary Cell (SCell) release during User Equipment (UE) handover comprises including information by a source eNB in a HandoverPreparationInformation message for a target eNB to control SCell release in the UE during handover, or including an indicator by a target eNB in a handover command for the UE to distinguish whether or not to release all configured SCells. | 05-03-2012 |
20120155303 | METHOD AND APPARATUS FOR AVOIDING IN-DEVICE COEXISTENCE INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for coexistence interference avoidance in a UE equipped with a LTE radio and an ISM radio includes applying a TDM solution in the UE for avoiding coexistence interference between the LTE radio and the ISM radio, the TDM solution defining a period of the TDM solution allocated for the LTE radio and another period of TDM solution allocated for the ISM radio. The method further includes the UE reporting an ISM buffer status to an eNB for adapting the TDM solution. | 06-21-2012 |
20120155437 | METHOD AND APPARATUS FOR AVOIDING IN-DEVICE COEXISTENCE INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for coexistence interference avoidance in a UE equipped with an LTE radio and an ISM radio includes applying a TDM solution in the UE for avoiding coexistence interference between the LTE radio and the ISM radio, the TDM solution defining a period of the TDM solution allocated for the LTE radio and another period of TDM solution allocated for the ISM radio. The method further includes the UE skipping incrementing a transmission counter associated with a Hybrid Automatic Repeat Request (HARQ) process if a corresponding uplink transmission is scheduled to occur during the period allocated for the ISM radio. | 06-21-2012 |
20120195248 | METHOD AND APPARATUS TO AVOID IN-DEVICE COEXISTENCE INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus are disclosed to avoid in-device coexistence interference in a wireless communication system. In one embodiment, the method includes receiving at a user equipment (UE) a MBMS service via a Point-To-Multipoint (PTM) transmission, and initiating a Time Division Multiplexing (TDM) solution in the UE for coexistence interference avoidance, wherein the TDM solution defines one or more scheduling periods and one or more unscheduled periods, and the UE stops receiving the MBMS service via the PTM transmission when the TDM solution is initiated in the UE. | 08-02-2012 |
20120195291 | METHOD AND APPARATUS FOR ADVOIDING IN-DEVICE COEXISTENCE INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for coexistence interference avoidance in a user equipment (UE) having a first radio with an LTE/LTE-Advanced radio technology and a second radio based on another radio technology includes initiating a time division multiplexing (TDM) solution in the UE on a serving cell between the first and second radios, the TDM solution defining scheduling periods and unscheduled periods. In one embodiment the UE increments the PREAMBLE_TRANSMISSION_COUNTER by 1 for each random access preamble transmission reattempt during the random access procedure, and the UE considers an unscheduled period of the TDM solution when determining the next available Physical Random Access Channel (PRACH) subframe for preamble transmission. | 08-02-2012 |
20120195298 | METHOD AND APPARATUS TO AVOID IN-DEVICE COEXISTENCE INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus are disclosed to avoid in-device coexistence interference in a user equipment (UE) that is equipped with a first radio based on LTE radio technology or LTE-Advance radio technology, and a second radio based on an alternate radio technology. In one embodiment, the method comprises including an assistant information in a UE Capability Information message sent to an evolved node B (eNB) for in-device coexistence interference avoidance. | 08-02-2012 |
20120231836 | METHOD AND APPARATUS TO AVOID IN-DEVICE COEXISTENCE INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus are disclosed for in-device coexistence interference detection. In one embodiment, the method comprises equipping a UE (user equipment) with a first radio based on LTE radio technology or LTE-advanced radio technology and a second radio based on another radio technology. The method also comprises activating the first radio and the second radio in the UE. Furthermore, the method comprises determining a presence of in-device coexistence interference from the second radio based on a transport block error rate (TBER) in the LTE radio technology or LTE-advanced radio technology. | 09-13-2012 |
20120236805 | METHOD AND APPARATUS FOR PROVIDING INFORMATION TO DETERMINE A CAUSE OF LOW QUALITY OF SERVICE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for providing information to determine a cause of low Quality of Service (QoS) includes Scheduling Request (SR) transmission status reporting or reporting uplink power for SR transmission. The SR transmission status reporting includes a User Equipment (UE) being configured with Physical Uplink Control Channel (PUCCH) resource for SR transmission, and the UE reporting SR transmission status information to a connecting eNB. The reporting of uplink power for SR transmission includes a UE being configured with a PUCCH resource for SR transmission; and the UE reporting uplink power information for SR transmission to a connecting eNB. | 09-20-2012 |
20120250602 | METHOD AND APPARATUS TO IMPROVE HIGH-SPEED MOBILITY IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus are disclosed to improve high-speed mobility. In one embodiment, the method comprises broadcasting, from a cell, an indication that the cell supports a relay node to access, select or re-select. The method also comprises allowing the relay node to access the cell if there is the indication that the cell supports the relay node, and not allowing the relay node to access the cell if there is no indication that the cell supports the relay node. | 10-04-2012 |
20120250662 | METHOD AND APPARATUS TO AVOID HIGHER RANDOM ACCESS (RA) FAILURE RATE DUE TO A SOLUTION FOR IN-DEVICE COEXISTENCE INTERFERENCE IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus are disclosed to avoid higher random access (RA) failure rate. In one embodiment, the method comprises (i) equipping a UE on a serving cell with a first radio based on LIE or LIE-advanced radio technology and a second radio based on another radio technology, (ii) activating a TDM solution in the UE for the serving cell for avoiding in-device coexistence interference between the radio technologies, wherein the TDM solution defines one or more scheduling periods and unscheduled periods, (iii) initiating a RA procedure on the serving cell, (iv) transmitting a RA preamble for the initiated RA procedure from the serving cell, (v) receiving a corresponding RA response on the serving cell, and (vi) transmitting an Msg3, and starting a mac-ComentionResolutionTimer, wherein the UE may suspend the mac-ContentionResolutionTimer during an unscheduled period and resume the mac-ContentionResolutionTimer when entering a next scheduling period. | 10-04-2012 |