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Cell selection method, auxiliary cell selection method, device and communication system

A cell selection and assisting cell technology, applied in the field of communication, can solve the problems of increasing the burden of air interface signaling transmission between the UE and the serving base station, and the inability of the serving base station to provide channel quality information, etc., so as to reduce the burden of air interface signaling transmission and improve communication quality Effect

Active Publication Date: 2010-12-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] During the research and practice of the prior art, the inventors of the present invention found that in the prior art, the UE measures the quality of the uplink channel and sends the measurement report to the serving base station, and the serving base station selects the The shortcoming of the prior art for the UE's uplink joint receiving cell is that it increases the signaling transmission burden on the air interface between the UE and the serving base station, and the UE cannot measure the fast fading of the uplink channel, and cannot provide more detailed channel quality information for the serving base station

Method used

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  • Cell selection method, auxiliary cell selection method, device and communication system
  • Cell selection method, auxiliary cell selection method, device and communication system
  • Cell selection method, auxiliary cell selection method, device and communication system

Examples

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Embodiment 1

[0038] This embodiment provides a cell selection method, such as figure 1 As shown, the method includes:

[0039] Step 1: Receive the measurement report of the cell under the jurisdiction of the non-serving base station sent by the non-serving base station of the terminal, the measurement report carries the uplink signal quality parameters of the terminal in the cell;

[0040] Wherein, the measurement report of the cell under the jurisdiction of the non-serving base station in step 1 may be an uplink channel quality parameter acquired by the non-serving base station through measurement of uplink reference symbols (SRS, Sounding Reference Symbols) sent by the UE. Wherein, the uplink channel quality parameter may include: any one of uplink signal received power, uplink signal received strength, interference signal strength, channel instantaneous quality value or any combination of several items, wherein the channel instantaneous quality value may include: channel response . Int...

Embodiment 2

[0060] This embodiment provides a method for assisting cell selection. The method provided in the first embodiment above is executed from the side of the UE's serving base station. This embodiment is a method executed from the side of the UE's non-serving base station. In this embodiment, the UE's The non-serving base station measures the cells within its coverage, obtains the uplink signal quality parameters, includes the uplink signal quality parameters in the cell measurement report, and sends them to the serving base station of the UE, so as to select the uplink signal more reasonably for the serving base station of the UE. The joint receiving cell provides the basis.

[0061] An auxiliary cell selection method provided in this embodiment, such as figure 2 As shown, the method includes:

[0062] Step M1: Measure the uplink signal sent by the terminal received by the cell under its jurisdiction, and obtain the uplink signal quality parameter of the terminal in the cell; ...

Embodiment 3

[0070] This embodiment provides a cell selection method, which is similar to Embodiment 1. In this embodiment, the focus is on the operation of the serving base station selecting an uplink coordinated multi-point candidate cell of the terminal according to the uplink signal quality parameters sent by the non-serving base station. Such as image 3 The method shown in this embodiment includes:

[0071] Step A1: The non-serving base station measures the uplink channel quality according to the received measurement signal sent by the UE, so as to obtain the uplink signal quality parameters of the cell. The uplink signal quality parameters of the cell include at least: the uplink signal reception of the adjacent cell of the UE power, or the received strength of the uplink signal of the adjacent cell of the serving cell of the UE;

[0072] It should be noted that the measurement signals measured by the non-serving base station include: any one of the uplink SRS sent by the UE, the s...

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Abstract

The invention relates to a cell selection method, an auxiliary cell selection method, a device and a communication system. The cell selection method comprises the following steps: receiving a measurement report of a cell of a non-service base station, which is transmitted by the non-service base station of a terminal, wherein the measurement report carries uplink signal quality parameters of the terminal in the cell; and selecting an uplink combined receiving cell of the terminal based on the received uplink signal quality parameters. Since the uplink channel measured by the non-service base station is more accurate than the uplink channel measured by UE, the technical scheme enables the service base station to select the uplink combined receiving cell of the UE according to the measurement report more reasonably, thereby improving the communication quality of the system.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a cell selection method, an auxiliary cell selection method, equipment and a communication system. Background technique [0002] In a wireless communication system, the overall performance of a cell and user experience at a cell edge can be significantly improved by using Coordinated Multiple-Point (CoMP, Coordinated Multiple-Point) technology. Wherein, the CoMP technology includes: downlink coordinated multi-point transmission and uplink coordinated multi-point reception. The downlink coordinated multi-point transmission means that multiple geographically dispersed transmitting points send data to a user terminal (UE, User Equipment); the uplink coordinated multi-point reception means that multiple geographically dispersed receiving points jointly receive the data sent by the UE, and Process the received data sent by the UE. [0003] Usually, when multiple cells...

Claims

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Application Information

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IPC IPC(8): H04W24/10H04W48/18H04W88/08
Inventor 宋巍巍赵亚军于映辉王燕任晓涛李强
Owner HUAWEI TECH CO LTD
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