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Feedback information generation method

A technology of feedback information and information elements, applied in the direction of using the return channel for error prevention/detection, etc., can solve the problems of wasting system resources and reducing system transmission efficiency, and achieve the effect of improving system transmission efficiency and reducing the number of feedback message bits

Inactive Publication Date: 2009-05-13
ZTE CORP
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AI Technical Summary

Problems solved by technology

When the terminal uses the uplink channel allocated by the base station to send data to the base station using hybrid automatic repeat request (HARQ) technology, the base station will send feedback messages to each terminal separately according to the decoding status of each terminal's corresponding data. Reply, but when multiple terminals send data to the base station through the uplink channel allocated by the base station at the same time and the base station has not successfully decoded or all decoded successfully, this will waste valuable system resources and reduce the transmission efficiency of the system

Method used

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Embodiment Construction

[0028] The main idea of ​​the present invention is to improve system transmission efficiency by reducing the number of bits of the feedback message for sending uplink data to terminals using HARQ technology. Therefore, multiple terminals simultaneously send data to them through the uplink channel allocated by the base station In the case of no successful decoding or all successful decoding, the base station sends a unified feedback message to all terminals requiring HARQ feedback, thus achieving the purpose of improving system transmission efficiency.

[0029] The technical solutions adopted by the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] figure 1 Describes a wireless communication system with centralized scheduling control of base stations. After multiple terminals and / or non-transparent relay stations use HARQ technology to send uplink data to the base station at the same time, the base station ...

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Abstract

The present invention discloses a method for generating feedback information, which belongs to the field of wireless communication. The invention particularly suitable for a process in which a plurality of terminals and / or non-transparent relay station simultaneously adopt hybrid automatic repeat request HARQ technique for transmitting data to base station in wireless communication system that is integrated scheduled and controlled. If received data are analyzed to be all successful or all failed by base station, then feedback information will be transmitted to all terminals that need HARQ feedback by base station. The feedback information carries analytic status information of transmitted data from terminals to base station. Bit numbers of feedback information of ascending data which transmitted to terminals that adopted HARQ technique are reduced thereby system transmitting efficiency is improved.

Description

technical field [0001] The invention belongs to the field of wireless communication, in particular to a method for generating feedback information. Background technique [0002] In a wireless communication system, a base station is a device that provides services to terminals. The base station communicates with the terminal through uplink and downlink. The downlink refers to the direction from the base station to the terminal, and the uplink refers to the direction from the terminal to the base station. Multiple terminals can simultaneously send data to the base station through the uplink, and can also receive data from the base station through the downlink at the same time. [0003] In a wireless communication system that adopts the centralized scheduling control of the base station, the scheduling and allocation of all available resources of the system are performed by the base station, such as the resource allocation when the base station performs downlink transmission an...

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Application Information

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IPC IPC(8): H04L1/18H04L1/12
Inventor 鲁照华方惠英
Owner ZTE CORP
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