System and method for improving reverse data rate

Abstract

The invention discloses a system and method for improving the reverse data rate, belonging to the CDMA wireless communication system. In the method, after determining that a cell has the narrow-band interference, the base station calculates the cell interference level value and carries out the interference suppression operation of the users of the cell and then determines the power gain value of areverse supplementation channel corresponding to a reverse pilot channel and sends the power gain value to a mobile station; the mobile station determines the transmission power of the reverse supplementation channel according to the received power gain value and finally improves the reverse data rate. Under the condition of the mobile station having the interference, the invention guarantees that the transmission rate of reverse high speed data is not influenced during the power control of the mobile station, and finally guarantees the signal-to-noise ratio of the base station in the operation of demodulating high speed data.

Description

technical field [0001] The invention belongs to a CDMA wireless communication system, in particular to a system and method for increasing reverse data rate. Background technique [0002] At present, in the CDMA wireless communication system, when there is narrowband interference, the transmission power of the reverse mobile station will be significantly increased, and the capacity of the cell will be reduced, while the reverse high-speed data rate will drop rapidly. [0003] The reverse service channels of the CDMA system include: reverse pilot channel, reverse basic channel and reverse supplementary channel, among which the reverse supplementary channel is used to transmit reverse high-speed data, and its transmission rate can reach up to 307.2kbps. In order to ensure that the base station can correctly demodulate the signal of the reverse high-speed data, the reverse supplementary channel carrying high-speed data needs to reach the signal-to-noise ratio Eb / Nt required by t...

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Problems solved by technology

[0004] However, when there is reverse narrowband interference in the CDMA system, the mobile station still transmits signals according to the above ideal transmission power. At this time, the noise becomes larger, resulting in a significant decrease in Eb / Nt. According to the closed-loop power, the mobile station will Increase the transmit power until the frame error rate of the reverse fundamental channel reaches the target of about 1%

However, generally in the process of increasing the power of the reverse fundamental channel, the difference between the transmit power of the reverse pilot channel and the reverse supplementary channel will remain fixed, thus causing The power gain value RL_ATT_ADJ_GAIN_TO_PILOT is invalid, and finally the transmission rate of reverse high-speed data drops

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