Method for communication access net system to process fast feedback channel

Abstract

The invention discloses a treatment method for rapid feedback channel of a communication access network system, comprising: A. the rapid feedback channel is distributed for a terminal and the distribution information is recorded; B. the reception of the feedback information of the rapid feedback channel is judged according to the recorded distribution information and processing operation is carried out with pertinence according to the reception of the feedback information. When abnormal reception occurs, the feedback information can not be analyzed and preset treatment operation for abnormal reception is started. The invention can enhance the probability of correct analysis of the feedback information so as to enhance the communication quality and save system resource.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a processing method for a fast feedback channel of a communication access network system. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) is a special form of multi-carrier modulation technology. The basic principle is to distribute high-speed data streams to several sub-channels with relatively low transmission rates for transmission through serial-parallel switching. [0003] In the protocol 802.16e using OFDM technology, the access network system can learn terminal information through a fast feedback channel. The fast feedback channel is a specially designated area marked with uplink interval usage code (UIUC, Uplink Interval Usage Code) = 0 for fast feedback. The modulation method used is quadrature phase shift keying (QPSK), fast feedback Channels are represented by time slots, and allocating ...

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Problems solved by technology

[0012] As long as the access network system (including the base station and the base station controller) of the prior art receives the feedback information on the fast feedback channel, it will analyze the feedback information, and use the analyzed content for processing, without checking the reception status of the feedback information. Whether it is abnormal or not, it will cause the access network to parse the feedback information incorrectly when the following feedback information is received abnormally:

[0013] 1) The access network has sent a release information element (IE, Information Element) to the terminal, which requires the terminal not to feed back information on the specified fast feedback channel, but the terminal still sends feedback information on the fast feedback channel; 2) receiving The network access believes that the fast feedback channel allocated to a terminal has expired, but the terminal is still sending feedback information on the fast feedback channel; 3) the access network re-allocates a new fast feedback channel to the terminal, and the terminal does not receive There is a problem with the newly allocated IE or the processing of the terminal, causing it to still feed back information on the fast feedback channel originally allocated to it; 4) The terminal may not feedback information on the channel allocated to itself

[0014] If the access network incorrectly parses the feedback content, it may lead to corresponding failure processing, such as power control failure, MIMO mode error, handover failure, Band AMC failure, etc., which will cause the terminal to fail to communicate correctly with the access network, or even Cause the terminal to go offline

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