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Channel quality feedback method, device and user terminal for multiple base station collaboration group

A channel quality, user terminal technology, applied in the field of communication, can solve problems such as inability to provide

Inactive Publication Date: 2009-03-25
新奇点智能科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide a multi-base station cooperative group channel quality feedback method and device, and a user terminal to solve the problem that the existing 3GPP LTE system cannot provide a corresponding channel feedback mechanism to support such as 3GPP LTE -The working mode of multi-base station cooperation in Advanced's next-generation mobile communication system

Method used

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  • Channel quality feedback method, device and user terminal for multiple base station collaboration group
  • Channel quality feedback method, device and user terminal for multiple base station collaboration group
  • Channel quality feedback method, device and user terminal for multiple base station collaboration group

Examples

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Effect test

example 1

[0094] Example 1: Partial channel sharing feedback method

[0095] This example explains the method for feedbacking channel information of users under the coverage of adjacent base stations that are partly shared between base stations in multi-base station cooperation mode. In this case UE A Channel H needs to be fed back to base station A AA The channel quality information CQI (channel quality indicator, channel quality indicator) / PMI (preferred matrix index, preferred matrix index), UE A Channel H needs to be fed back to base station B BA channel quality information (CQI / PMI); UE B Feedback mode with UE A Similarly, therefore, in this example only UE A As an example, a specific description is given.

[0096] First, determine the user ID N of the multi-base station cooperative group where base station A and base station B are located c ID , for example, to determine N c ID =1100. Here, it should be noted that the identity of the cooperation group can be an identity ...

example 2

[0107] Example 2: Full Channel Sharing Feedback Method

[0108] According to the present invention, this example explains the feedback method of fully sharing the channel information of the users under the coverage of adjacent base stations between the base stations in the multi-base station cooperative mode. In this case UE A Channel H needs to be fed back to base station A AA channel quality information (CQI / PMI), UE A Need to think about base station B feedback channel H BA The channel quality information (CQI / PMI) of the, similarly, in this example only with UE A As an example, a specific description is given.

[0109] First, determine the user ID N of the multi-base station cooperative group where base station A and base station B are located c ID , for example, to determine N c ID =1100, the method of determining this parameter is similar to that of Example 1, and will not be repeated here. And determine the position and resource size in the frequency domain of ...

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Abstract

The invention discloses a channel quality feedback method of a multi-base-station cooperative group, a device and user terminals. The multi-base-station cooperative group comprises a plurality of base stations distributed in different cells, and user terminals covered by the base station, wherein share feedback channels are formed between different cells and occupy corresponding physical resources; and the multi-base-station cooperative group has corresponding mark. The feedback method comprises the following steps: determining the share feedback channels in the multi-base-station cooperative groove; estimating the channel quality of the share feedback channels; and acquiring the transmission parameters of the channel quality information, and transmitting the channel quality information according to the mark of the multi-base-station cooperative group, the physical resources occupied by the share feedback channels, and transmission parameters. The method can achieve channel quality feedback in the multi-base-station cooperative grope so as to provide feasibility for performance gain of multi-base-station cooperation.

Description

technical field [0001] The present invention relates to the communication field, in particular to a multi-base station cooperative group channel quality feedback method and device, and a user terminal in a frequency division multiplexing duplex system. Background technique [0002] Multi-base station cooperation can reduce or eliminate mutual interference by utilizing the coordination and cooperation between adjacent base stations, thereby improving the throughput of the communication system and improving the performance of users at the cell border. Therefore, in mobile communication systems such as 3rd Generation Partnership Project-Long Term Evolution Advanced (3GPP LTE-Advanced), multi-base station cooperation has become an important technology. [0003] The premise that multiple base stations can cooperate is that each base station in the cooperative group can obtain the information of all or part of the channels in the group in advance, so that the base station can perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03H04L1/16H04L27/26H04B1/707H04L1/00H04L25/02
Inventor 张辉王西强
Owner 新奇点智能科技集团有限公司
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