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Interference measurement method, apparatus and system of multipoint cooperative transmission

A technology of interference measurement and multi-point coordination, applied in the field of communication, can solve the problems of increasing reference signal resource overhead, affecting system throughput, reducing system available resources, etc., to achieve the goal of improving system throughput, saving resource overhead, and increasing available resources Effect

Inactive Publication Date: 2017-10-10
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since CSI-IM resources need to be reserved, the resource overhead of the reference signal is increased, the available resources of the system are reduced, and the system throughput is affected.

Method used

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  • Interference measurement method, apparatus and system of multipoint cooperative transmission
  • Interference measurement method, apparatus and system of multipoint cooperative transmission
  • Interference measurement method, apparatus and system of multipoint cooperative transmission

Examples

Experimental program
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Embodiment 1

[0026] figure 2 It is a flow chart of an interference measurement method for coordinated multi-point transmission provided in Embodiment 1 of the present invention. This embodiment is applicable to the case of interference measurement in CoMP for coordinated multi-point transmission, and the method may be executed by a user equipment UE. Specifically include the following steps:

[0027] Step 110, configure at least one channel state information process CSI process, each CSI process information includes at least one non-zero power NZP channel state information reference signal CSI-RS resource.

[0028] When the base station detects an edge user and determines to perform CoMP for the edge user, the base station configures a plurality of coordinated transmission nodes TP associated with it, and the base station sends configuration parameters to each TP and user equipment UE. Through configuration, each TP can output according to the configuration parameters after receiving the...

Embodiment 2

[0040] image 3 A schematic diagram of an interference measurement method for coordinated multi-point transmission provided in Embodiment 2 of the present invention. When two TPs are configured in the network, they are called the first TP (also called TP1) and the second TP (also called TP2) respectively. ), at this time, step 110, configuring at least one channel state information process CSI process, can be specifically implemented as:

[0041] Step 110a, configure two CSI process information, each CSI process includes one NZPCSI-RS resource.

[0042] Correspondingly, step 120, receiving the non-zero power channel state information reference signal NZP CSI-RS sent by the preset coordinated transmission node TP in the configured NZP CSI-RS resources, and other TPs being silent, may be specifically implemented as:

[0043] Step 121a, receiving the NZPCSI-RS sent by the first TP in the first NZP CSI-RS resource, and the second TP is silent;

[0044] Step 122a: Receive the NZP...

Embodiment 3

[0056] Figure 4 It is a schematic diagram of an interference measurement method for coordinated multi-point transmission provided in Embodiment 3 of the present invention. In one implementation, multiple TPs need to perform dynamic point selection (DynamicPoint Selection, DPS). When performing dynamic point selection, Usually only one TP outputs a useful signal. In the prior art, three CSI-IM resources need to be set up to measure the interference signal corresponding to when TP1 sends useful signals TP2 and TP3 are silent, the corresponding interference signal when TP2 sends useful signals TP1 and TP3 are silent, and TP3 sends useful signals TP1 and TP2 are silent corresponding interference signal. In view of this situation, in the embodiment of the present invention, when there are three TPs configured in the network, they are respectively called the first TP, the second TP and the third TP (also called TP3), and the three TPs perform dynamic node selection (Dynamic Point ...

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Abstract

The invention discloses an interference measurement method, apparatus and system of multipoint cooperative transmission. The method is applied to user equipment UE, and comprises the following steps: configuring at least one channel state information process CSI process, wherein each CSI process information comprises at least one non zero power NZP channel state information reference signal CSI-RS resource; receiving a non zero power channel state information reference signal NZP CSI-RS sent by a preset cooperative transmission node TP in the configured NZP CSI-RS resource, and other TPs are silent; and performing interference measurement according to the received NZP CSI-RS. In the interference measurement method, apparatus and system disclosed by the embodiment of the invention, the non zero power NZP channel state information reference signal CSI-RS resource is configured at first, then the NZP CSI-RS sent by the TP is received in the NZP CSI-RS resource, and the interference measurement is performed according to the obtained NZP CSI-RS. The NZP CSI-RS does not need to perform resource retaining, the reserved resources occupied by the CSI-IM resource can be greatly saved, thereby reducing the resource cost during the interference measurement in the multipoint cooperative transmission CoMP, increasing the available system resources and improving the system throughput.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to an interference measurement method, device and system for coordinated multi-point transmission. Background technique [0002] In order to improve the performance of cell edge users and meet the requirement of cell edge spectrum efficiency, Coordinated Multiple Points Transmission / Reception (CoMP) technology is introduced in the 3GPP R11 version. The CoMP technology refers to a plurality of coordinated transmission nodes (Transmission Point, TP) geographically separated, cooperatively participating in data transmission for a user equipment (User Equipment, UE) or jointly receiving data sent by a user equipment. The diversity of transmission modes in the coordinated multi-point transmission CoMP technology may cause the user equipment to face multiple interference hypotheses (Mmultiple Transmission Hypotheses), so interference measurement is very...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W72/04H04B7/024
CPCH04B7/024H04W24/02H04W72/53H04W72/23
Inventor 周欢孙鹏
Owner BEIJING XINWEI TELECOM TECH