WO2009105611A1

3G

Title

Increasing capacity in wireless communications

Application Number:

WO2009US34637

Publication Date:

27-08-2009

Current Assignee:

QUALCOMM INC , JOU YU-CHEUN , ATTAR RASHID AHMED AKBAR , BLACK PETER J

Family ID:

42813474

Application Date:

20-02-2009

Publication Country:

US

View on Espacenet

Priority Date:

20-02-2008

Declaring Company:

QUALCOMM INC

Abstract  Abstract

Techniques to increase capacity in a wireless communications system. In an aspect systematic non-transmission or blanking of minimal-rate frames transmitted in a communications system is provided. In an exemplary embodiment eighth rate frames in a cdma2000 voice communications system are systematically substituted with null-rate frames carrying zero traffic bits. Provisions are nevertheless made for the transmission of certain designated as critical by e.g. a vocoder. The receiver detects the presence of null rate or non-null rate transmissions and processes the received frames accordingly including updating an outer loop power control only in response to non-null rate frames. Further techniques for changing the pilot transmission gating pattern to assist the receiver in detecting null rate frames are provided. In another aspect early termination of a signal transmission over a wireless communications link is provided. In an exemplary embodiment a base station (BS) transmits power control groups (PCGs) for a frame over a forward link (FL) to a mobile station (MS) until accurate reception of the frame is acknowledged by the MS over a reverse link (RL) possibly before all PCGs of the frame are received over the FL. Possible ACK signaling methods are defined for channels associated with a cdma2000 wireless communications system. In another exemplary embodiment techniques for reverse link early termination are also provided.

Note:

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