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Method and apparatus for power level adjustment in a wireless communication system

A wireless communication system and wireless device technology, applied in wireless communication, power management, transmission system and other directions, can solve problems such as too late for negotiation and signal deterioration

Inactive Publication Date: 2007-12-26
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the signal usually deteriorates too quickly to negotiate

Method used

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  • Method and apparatus for power level adjustment in a wireless communication system
  • Method and apparatus for power level adjustment in a wireless communication system
  • Method and apparatus for power level adjustment in a wireless communication system

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Embodiment Construction

[0023] A method of call recovery in a wireless system according to an embodiment provides information about neighboring cells and / or sectors that are available and capable of call recovery for a mobile station that may have lost a communication link. Each base station with call recovery capability has a default forward call recovery channel identified by a predetermined code. In another embodiment, each neighborhood is assigned more than one default forward call recovery channel and mobile stations use channels with IMSI (International Mobile Station Identity), TIMSI (Temporary International Mobile Station Identity), ESN (Electronic Serial number), system time, or a combination thereof to determine decisively which channels to use to receive transmissions from each recovery-capable base station. The mobile station can then use the channel to receive signals from the recovering base station. Then, when the mobile station visits the base station, the mobile station can be instr...

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Abstract

A method and apparatus for transmitter re-initialization in a wireless communication system (810). When the communication link between a mobile station (38) and a base station (32) is in trouble, the mobile station and the infrastructure prearrange potential rescue base stations (34). The mobile station (838) disables the transmitter during the rescue process. On recovery the transmit po wer level of the transmitter is incremented for transmission of the pilot strength measurement message until a hand-off direction message is received. The transmit power level is incremented to a maximum value.

Description

technical field [0001] The present invention relates to wireless voice and data communications, and more particularly to a novel and improved method and apparatus for call recovery within a wireless communication system. Background technique [0002] A wireless communication network typically includes a plurality of base stations (BS), each associated with a cell and / or sector, communicating with a number of mobile stations (MS). The base stations are controlled by a base station controller (BSC). As the mobile station moves within the system, the quality of the received signal from the base station is not stable. When a communication link between a base station and a given mobile station deteriorates, communication loss can be prevented by establishing a link with at least one other base station. The handover procedure provides for the initiation of this alternate communication link. In the case of a handoff, the infrastructure is negotiated with each base station and mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005H04B7/26H04M1/72H04W24/00H04W28/18H04W36/08H04W52/32H04W52/36H04W76/02H04W76/04
CPCH04W52/367H04W76/02H04W28/18H04W36/08H04B17/0077H04B17/0057H04W24/00H04W52/325H04W76/04H04B17/318H04B17/382H04W76/20H04W76/10H04W52/32H04W52/36
Inventor T·陈王俊
Owner QUALCOMM INC