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Determination method of codebook generation mode and apparatus thereof

A generation method and determination method technology, applied in the field of mobile communication, can solve the problems of reducing system performance, affecting accuracy scheduling, inappropriateness, etc., and achieve the effect of improving system performance

Active Publication Date: 2012-08-01
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to different actual conditions, such as different channel conditions, when using a certain rank, some UEs may be suitable for using the 4+2 codebook generation method, while some UEs may be suitable for using the 2+2+2 codebook generation method. In addition, some UEs may use the 4+2 codebook generation method when using a certain rank, and the 2+2+2 codebook generation method when using another rank. If the codebook generation method used is inappropriate, the codebook used subsequently will be inappropriate, which will affect the accuracy of the PMI obtained by the UE and the scheduling of the UE by the serving cell, reducing system performance.

Method used

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  • Determination method of codebook generation mode and apparatus thereof
  • Determination method of codebook generation mode and apparatus thereof
  • Determination method of codebook generation mode and apparatus thereof

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Embodiment Construction

[0028] Aiming at the problems existing in the prior art, the present invention proposes an improved method for determining the codebook generation method.

[0029] In order to make the technical solution of the present invention clearer and clearer, the solution of the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0030] figure 1 It is a flowchart of a method embodiment of the present invention. Such as figure 1 shown, including:

[0031] Step 11: From at least two preset codebook generation methods, select a codebook generation method for the rank grouping of the user terminal; wherein, the rank grouping of the UE can be one of the N types of ranks supported by the UE The M ranks are divided into any one of the Z groups, N, M and Z are all integers greater than or equal to 1, and M is less than or equal to N, and Z is less than or equal to M.

[0032] In practical applications, the UE and the servin...

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Abstract

The invention discloses a determination method of a codebook generation mode. The method comprises the following steps: A. Dividing M kinds of ranks in N kinds of the ranks supported by a user equipment (UE) into Zgroups, and selecting one codebook generation mode from at least two preset codebook generation modes according to the each group, wherein the N, the M and the Z are integers which are greater than or equal to 1, and the M is less than or equal to the N and the Z is less than or equal to M; B. Notifying a selection to the UE or a service cell. The invention simultaneously discloses the UE and a base station. By using the method and an apparatus of the invention, system performance can be increased.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a method and device for determining a codebook generation method. Background technique [0002] In the data transmission mode of Coordinated Multiple Points Transmission and Reception Joint Process (CoMP JP, Coordinated Multiple Points Transmission and Reception Joint Process), multiple cells serve a user terminal (UE, User Equipment) at the same time, that is, simultaneously on the same time-frequency resource There are multiple cells transmitting the same data for a UE. These cells serving the UE at the same time form a set of coordinated cells, one of which is a serving cell, and the other cells are coordinated cells. [0003] Assuming that there are 3 cells serving the UE at the same time, these 3 cells are respectively cell a, cell b and cell c, and the corresponding numbers of antenna ports are respectively Na, Nb, and Nc, then the number of antenna ports Nt serving the U...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L1/00
CPCH04B7/0665H04B7/0482H04L25/03942H04B7/0486H04B7/04H04B7/0456H04B7/0417H04B7/0639
Inventor 周永行任晓涛夏亮孙静原
Owner HUAWEI TECH CO LTD