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Erasure detection and power control for a transport channel with unknown format in a wireless communication system

A wireless communication system, erasing block technology, applied in wireless communication, transmission control/equalization, error detection/prevention using a signal quality detector, etc., can solve problems such as difficulty in determining accurately

Inactive Publication Date: 2014-08-20
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because it may be difficult to accurately determine the true status of each received block on such a transport channel, i.e. whether the received block is a good block, a DTX block, or a bad block

Method used

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  • Erasure detection and power control for a transport channel with unknown format in a wireless communication system
  • Erasure detection and power control for a transport channel with unknown format in a wireless communication system
  • Erasure detection and power control for a transport channel with unknown format in a wireless communication system

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Embodiment Construction

[0022] figure 1 A wireless communication system 100 is shown. Each base station 110 in system 100 provides communication coverage for a respective geographic area. A base station is a fixed station and may also be called a Node B, base transceiver subsystem (BTS), access point, or some other terminology. Wireless devices 120 are typically dispersed throughout system 100 . A wireless device may be either fixed or mobile, and may also be called User Equipment (UE), mobile station, terminal, or some other terminology. A wireless device may communicate with one or more base stations on the downlink and / or one or more base stations on the uplink at any given moment. A system controller 130 is coupled to the base station 110 and may be further coupled to other systems and networks, such as a public switched telephone network (PSTN), a network entity supporting packet data, and the like. The system controller 130 provides coordination and control for the base stations coupled th...

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Abstract

Erasure detection and power control are performed for an intermittently active transport channel with unknown format. A receiver processes each received block and determines whether it passes or fails CRC. For each received block with CRC failure, the receiver performs erasure detection by computing a symbol error rate (SER) and energy of the received block, comparing the computed SER against an SER threshold, comparing the computed energy against an energy threshold, and declaring an erasure if the computed SER is less than the SER threshold and the computed energy exceeds the energy threshold. The SER and energy thresholds may be adjusted based on the average SER and the average energy for prior received blocks with CRC failures. For power control, an SIR target is increased by an UP step whenever an erased block is detected for the transport channel.

Description

[0001] divisional application [0002] The patent application of the present invention is the application date of June 6, 2005, the application number is 200580026118.0, and the invention patent application title is "erasure detection and power control for transmission channels with unknown formats in wireless communication systems". Divisional application. technical field [0003] This disclosure relates generally to communications, and more particularly to techniques for performing erasure detection and power control in a wireless communication system. Background technique [0004] In a wireless communication system, a wireless device, such as a cellular telephone, communicates with one or more base stations through transmissions on the downlink and uplink. The downlink (or forward link) refers to the communication link from the base station to the wireless device, and the uplink (or reverse link) refers to the communication link from the wireless device to the base stat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/04H04W52/12H04W52/20H04W52/44H04L1/20H04B7/005
CPCH04W52/287H04L1/20H04W52/12H04W52/362H04W52/20H04W52/16H04W52/44H04W52/04H04L1/201
Inventor 阿米特·布塔拉帕瓦塔纳坦·苏布拉马尼亚吴又金
Owner QUALCOMM INC
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