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Method and device for obtaining channel quality indication information

A channel quality indication and acquisition method technology, applied in digital transmission systems, error prevention, electrical components, etc., can solve the problems of reduced flexibility and performance, and the failure of relay nodes to obtain accurate channel quality indication information, so as to improve flexibility performance and performance, accurate results

Active Publication Date: 2011-08-31
南通东湖国际商务服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0053] The main purpose of the present invention is to provide a method and device for obtaining channel quality indication information to solve the problem that the relay node in the existing system cannot obtain accurate channel quality indication information because the existence of R-PDCCH is not considered, which leads to the flexibility of the system. issues with sex and performance

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  • Method and device for obtaining channel quality indication information
  • Method and device for obtaining channel quality indication information
  • Method and device for obtaining channel quality indication information

Examples

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Embodiment 1

[0073] figure 1 It is a preferred structural block diagram of a device for acquiring channel quality indication information of a relay node according to an embodiment of the present invention, and the device includes: a receiving unit 102, a measuring unit 104, a determining unit 106, and a transmitting unit 108 connected in sequence, wherein:

[0074] The receiving unit 102 receives channel state information CSI reference resources sent by the base station;

[0075] The measuring unit 104 measures the channel state information reference symbol CSI-RS and / or the common reference signal CRS corresponding to the CSI reference resource;

[0076] The determination unit 106 determines the CQI value corresponding to the CSI reference resource according to the measurement results, wherein it is assumed that the relay physical downlink control channel R-PDCCH does not occupy the resource elements in the CSI reference resource; or it is assumed that no resource element in the CSI refer...

Embodiment 2

[0085] image 3 It is a preferred flowchart of a method for acquiring channel quality indication information according to an embodiment of the present invention, and the method includes:

[0086] S302. The relay node receives the channel state information CSI reference resource sent by the base station;

[0087]S304, the relay node measures the channel state information reference symbol CSI-RS and / or the common reference signal CRS corresponding to the CSI reference resource;

[0088] S306. The relay node determines the CQI value corresponding to the CSI reference resource according to the measurement result, where it is assumed that the relay physical downlink control channel R-PDCCH does not occupy resource elements in the CSI reference resource, or that the CSI reference resource is not configured. Resource elements in the resource are assigned to the relay physical downlink control channel R-PDCCH;

[0089] S308, the relay node reports the CQI value to the base station. ...

Embodiment 3

[0097] Figure 4 It is another flowchart of a method for acquiring channel quality indication information according to an embodiment of the present invention, and the method includes:

[0098] S401, the base station eNodeB sends the CSI-RS and the CRS to the relay node (Relay Node, referred to as RN);

[0099] S403, the relay node performs channel measurement according to the CSI-RS or CRS;

[0100] S405, the relay node determines the CSI reference resource, and determines the CQI value on the CSI reference resource according to the channel measurement result, and the CQI acquisition method includes, when determining the CQI value, assuming an R-PDCCH (Relay Physical Downlink Control Channel) relay The resources of the CSI reference resource not used by the physical downlink control channel; or, assuming that the resource elements in the CSI reference resource are not configured for the relay physical downlink control channel R-PDCCH;

[0101] S407, the relay node reports th...

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Abstract

The invention discloses a method and a device for obtaining channel quality indication information. The method comprises the following steps: a CSI (channel state information) reference resource which is sent by a base station is received by a relay node; a CSI-RS (channel state information-reference signal) corresponding to the CSI reference resource and / or CRS (cell relay service) is measured by the relay node; a CQI (channel quality information) valve corresponding to the CSI reference resource is determined by the relay node according to the measured result; and the condition that a resource element in the CSI reference resource is not occupied by a R-PDCCH (relay-physical downlink control channel) is assumed, or, the condition that the resource element in the CSI reference resource is not configured for the R-PDCCH is assumed, the CQI valve is reported to the base station by the relay node. The problem that the accurate channel quality indication information can not be obtained without considering the existence of the R-PDCCH by the relay node in the existing system, therefore, the system flexibility and performance are reduced is solved by the method, and the effect of obtaining the channel quality indication information accurately and improving the system flexibility and performance are achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for acquiring channel quality indication information. Background technique [0002] In wireless communication technology, when the base station side (e.g., evolved Node B, eNodeB, eNB for short) uses multiple antennas to transmit data, it can adopt spatial multiplexing to increase the data transmission rate, that is, use the same time-frequency The resource transmits different data at different antenna positions, and a receiving end (such as a user equipment (User Equipment, UE for short)) also uses multiple antennas to receive data. In the case of a single user, the resources of all antennas are allocated to the same user, and this user exclusively occupies the physical resources allocated to the base station side within a transmission interval. This transmission method is called Single User Multiple Input Multiple Output (SMUMO). -Input Multiple-Out-put, r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L1/00
Inventor 徐俊李儒岳袁弋非毕峰陈艺戬张峻峰
Owner 南通东湖国际商务服务有限公司
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