Method for receiving mobile station reverse channel quality indicating channel of CDMA base station

Abstract

The system composed of base station controller including unit of selecting distribution, multiple base station transmitterrceiver including function unit for controlling packet data channel, and mobile station receives CQI information sent by mobile station through following method: corresponding BTS of all channels supporting forward packet data in current effective set pilot carrier of mobile station receive channel information of quality indication in backward channel at same time; information synchronization is carried out at base station controller in mode of combining active reporting with passive querying, and real time updating is carried out by working BTS of forward packet data channel in mobile station. Advantages of the invention are: preventing a great lot of message of reported CQI information from appearing on Abis port, giving play to receiving capability furthest, maximized accuracy for CQI information timely.

Description

technical field [0001] The invention relates to the field of CDMA (Code Division Multiple Access) mobile communication, in particular to a method for receiving a reverse channel quality indicator (Reverse Channel Quality Indicator Channel) by a base station in a CDMA 1XEV-DV (1 carrier enhanced data and voice) system. Background technique [0002] The CDMA 1XEV-DV system is an upgraded device of the CDMA 1X system, which can provide both voice and data services on the same carrier frequency. On the basis of being fully compatible with CDMA 1X functions, the forward wireless data transmission rate can theoretically reach up to '3.1Mbps / This is mainly due to the fact that the newly added forward packet data channel in the CDMA 1XEV-DV system adopts a modulation technology with higher spectrum efficiency, and then through the forward packet data control channel and the reverse channel quality indicator channel Used in conjunction with the reverse acknowledgment channel, HARQ (...

AI Technical Summary

Problems solved by technology

[0003] Each packet sent to the forward packet data channel must set a certain modulation mode, including parameters such as time slot length, modulation order and number of WALSH code channels. The setting of these parameters determines the expected data parameter rate and transmission of the channel. Anti-interference ability, the expected data transmission rate of the modulation mode and the anti-interference ability of the transmission are inversely proportional, so if the expected data parameter rate is increased blindly, the anti-interference ability of the transmission will be reduced, thereby increasing the packet transmission failure rate, making the actual On the contrary, if the transmission anti-interference ability is blindly improved, the transmission capacity will be wasted. Only by setting the modulation mode reasonably can the transmission capacity of the forward packet data channel be maximized.

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