Texas Instruments Corporation

Shantanu Kangude

Pierre Bertrand

Ramanuja Vedantham

Ariton E Xhafa

Zukang Shen

Harshal Shantanu Chhaya

Sandeep Bhadra

Badri N Varadarajan

Seung Baek

Yanjun Sun

Xiaolin Lu

Tarik Muharemovic

Jing Jiang

Shu Du

Itay Sherman

Simplified communication between user equipment and a neighboring cell not the primary cell is achieved by restricting the transmission parameters, such as bandwidth, of the neighboring cell transmission and provision of a simplified secondary baseband processor in the user equipment.

Enabling down link reception of system and control information from intra-frequency neighbors without gaps in the evolved-UTRA systems

A transport block size (TBS) of a first uplink message (RACH Msg3) transmitted on a Physical Uplink Shared Channel (PUSCH) during a random access procedure in a User Equipment (UE) accessing a radio access network may be determined by receiving a pathloss threshold parameter. A downlink pathloss value indicative of radio link conditions between the UE and a base station (eNB) serving the UE is then determined. A smaller value of TBS is selected from a set of TBS values if the determined pathloss value is greater than an operating power level of the UE minus the pathloss threshold parameter. A larger value of TBS is selected if the pathloss value is less than the operating power level of the UE minus the pathloss threshold parameter and the TBS required to transmit the RACH Msg3 exceeds the smaller TBS value.

Preamble group selection in random access of wireless networks

Enabling down link reception of system and control information from intra-frequency neighbors without gaps in the serving cell in evolved-utra systems

In at least some embodiments, a wireless networking system is provided. The wireless networking system includes a base-station and a plurality of user devices in communication with the base-station. The base-station selectively assigns each user device to one of a first group and a second group. Also, the base-station selectively assigns each user device to an uplink synchronized state and an uplink non-synchronized state. The base-station allocates a unique reduced identifier to each user device in the uplink synchronized state, but does not allocate unique reduced identifiers to user devices in the non-synchronized state.

Uplink synchronization management in wireless networks

Enabling down link reception of system and control information from intra-frequency neighbors without gaps in the serving cell in evolved-UTRA systems

This invention employs an inherent tradeoff in a radio bearer dependent data handling method for intra-E-UTRA handoffs. For user equipment using real time data, the source node forwards to the target node not yet acknowledged real time service data units and disconnects. This makes the handoff latency short at the expense of data traffic between nodes. For user equipment not needing real time data, the source node continues to receive user equipment acknowledgements during a time out period and only forwards service data units acknowledged during the time out period. This reduces X2 interface traffic between the source and target nodes but extends the handoff latency.

Radio bearer dependent forwarding for handover

A device includes a peer-to-peer group owner processor. The device also includes a memory coupled to the peer-to-peer group owner processor. At least one client associated with the device is a legacy client, and the peer-to-peer group owner processor enters a listening state after a dozing state. The device consumes less power in the listening state than in an awake state.

Peer-to-peer group owner enhanced power management

A wireless transmit/receive unit (WTRU) () in a wireless communications system includes a transceiver () for transmitting and receiving data from a plurality of base stations () and a controller () communicatively coupled to the transceiver () and configured to adjust an operation mode of the transceiver (). In the WTRU (), adjusting comprises configuring the transceiver () to begin a radio link handover procedure responsive to receiving a handover (HO) command from a first of the plurality of base stations () over a first communications link, specifying a first time, and reconfiguring the transceiver () to begin a radio link interruption procedure responsive to an expiry of the first time prior to completion of the radio link handover procedure. In the WTRU (), the radio link interruption procedure first attempts to re-establish the first communications link.

System and method for managing radio link failures

A pre-synchronization method in which the source cell chooses a signature for the user equipment (mobile) to use in the target cell for RACH access, and instructs the user equipment to perform RACH access and return to the current cell before a handover command (break command) is issued. This causes parallel execution of the UL synchronization process with the context transfer process among the two base stations.

Pre-synchronization method for hard handovers in wireless networks

A digital communications system for delivering data blocks includes at least one transmit/receive unit (TRU). The TRU includes a storage element for receiving transmit data packets and retransmit data packets from a sending unit and a processing element communicatively coupled to the storage element. The processing element is configured for recognizing a failure to receive at least one other transmit data packet (missing data packet) from the sending unit, and for configuring a status control packet for transmission to the sending unit, the control packet includes a header including a next packet identifier for a next data packet anticipated to be received and a status payload portion including a missing packet identifier including the transmit packet identifier for the missing data packet. In the system, the retransmit data packet includes at least a segment of the data payload in the missing data packet associated with the missing packet identifier.

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Dallas, TX, United States of America

Shantanu Kangude