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Method and device for controlling transmission rate of the forward link data packets

A technology of forward link and transmission rate, applied in the direction of selection device, radio/inductive link selection arrangement, digital transmission system, etc., can solve the problem that the terminal cannot adjust DRC information, etc., and achieve the effect of quality control

Inactive Publication Date: 2008-04-30
杨江
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  • Summary
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  • Description
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AI Technical Summary

Problems solved by technology

[0017] The purpose of the embodiments of the present invention is to provide a method and device for controlling the sending rate of data packets of the forward link, so as to solve the problem that the terminal cannot cooperate with the base station to adjust the DRC information

Method used

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  • Method and device for controlling transmission rate of the forward link data packets

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Embodiment Construction

[0028] Embodiments of the present invention provide a method and a device for controlling the sending rate of data packets of the forward link.

[0029] In the embodiment of the present invention, the base station counts the PER of the data packets sent at the rate indicated by each DRC information according to the ACK and NAK information sent by the terminal. If the packet error rate of data packets sent at a rate indicated by a certain DRC information exceeds a preset maximum threshold packet error rate, increase the DRCOffset attribute value corresponding to the rate indicated by the DRC information, that is, reduce the forward link transmission Rate; if the packet error rate of data packets sent at a rate indicated by certain DRC information is lower than a preset minimum threshold packet error rate. Then reduce the DRCOffset attribute value corresponding to the rate indicated by the DRC information, and the minimum value of the DRCOffset attribute value is 0, that is, inc...

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Abstract

The invention provides a method and a device to control transmission rate of data packets on a forward chaining path. The method mainly includes the steps of: according to the rate indicated by received DRC (data rate control) information, transmitting data packets by a base station to terminals on the forward chaining path, and calculating mistaken packet ratio of the data packets sent at the rate indicated by the DRC information according to the right and wrong response messages returned from terminals; comparing the mistaken packet ratio of the data packets sent at the rate indicated by the DRC information with the pre-established mistaken packet ratio of threshold, and adjusting the transmission rate of the data packets on the forward chaining path according to the comparative result. The invention can adjust the transmission rate of the data packets on the forward chaining path of the base station through coordination of the base station and the terminals, further controls the mistaken packet rate of the data packets sent at the rate indicated by the DRC information, and thereby controlling the quality of the forward chaining path.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and a device for controlling the sending rate of forward link data packets in the wireless communication field. Background technique [0002] In CDMA (Code Division Multiple Access, Code Division Multiple Access) 2000 1x-EVDOrevA (1x-RTT EVolution to packet Data Optimized technique, packet data optimization technology evolved from single frequency band) technology, the base station sends each information code with full power , the terminal determines the transmission rate of the forward link according to its own wireless environment. In an area closer to the base station, the terminal generally selects a larger transmission rate; in an area farther from the base station, the terminal generally selects a smaller transmission rate. The terminal continuously reports the selected rate indication information to the base station through the reverse channel, and the base stat...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/16H04Q7/22
Inventor 王志峰
Owner 杨江
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