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MRS (Mobile Relay Station) PCI (physical cell ID) distribution method

An allocation method and re-allocation technology, applied in the direction of electrical components, wireless communication, network data management, etc., can solve the problems of increased PCI allocation delay, inapplicability, and unsuitable application, etc., to reduce processing load and signaling overhead , Avoid PCI collision and save link resources

Inactive Publication Date: 2011-10-12
SHANGHAI RES CENT FOR WIRELESS COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] After analysis, such a solution cannot completely avoid PCI collisions, and is not suitable for fast-moving MRS
This is because on the one hand, processing information by OAM (Operation Administration and Maintenance) will increase the PCI allocation delay; on the other hand, frequent searches by MRS and frequent reporting of information to the macro base station will increase the processing load and Signaling overhead, competing for limited backhaul link resources, so the current technology is not suitable for MRS scenarios

Method used

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  • MRS (Mobile Relay Station) PCI (physical cell ID) distribution method
  • MRS (Mobile Relay Station) PCI (physical cell ID) distribution method
  • MRS (Mobile Relay Station) PCI (physical cell ID) distribution method

Examples

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Embodiment 1

[0043] This embodiment provides a method for MRS PCI allocation, which includes the following steps:

[0044] [Step A], the PCI allocation detection list is set at the macro base station end of each community; the PCI allocation detection list includes table one, table two, and a recovery table; the table one is used to store available PCI; the table two is used to store PCIs that are already in use; the recovery table is used to store spare PCIs. The available PCIs are a certain number of PCIs randomly selected from remaining PCIs in the cell, except for the fixed PCIs in the cell and the fixed PCIs in adjacent cells. Said table two includes a first module and a second module; said first module is used to store the fixed PCI in the neighborhood of the community and in the community, and the PCI stored in this module is static; the second module uses To store the PCI of the newly introduced site, if there is a conflict between the PCI of the newly introduced site and the PCI ...

Embodiment 2

[0057] In this embodiment, a high-speed moving train is taken as an example. The MRS PCI collision detection scenario is as follows: figure 1 Shown:

[0058] Firstly, configure a PCI list for each macro base station according to the principle of PCI non-conflict between adjacent cells. The list includes three parts: Table 1, Table 2, and Recycling Table.

[0059] Table 1: Store available PCI;

[0060] According to the search of each cell, you can know the macro base stations adjacent to the cell and the fixed PCIs in the cell, exclude these PCIs, and randomly select a certain number of PCIs from the remaining PCIs to create a dedicated PCI list, that is, Table 1. For the allocation of MRS PCI, the principle of non-conflict between the exclusive lists of adjacent cells must be followed when setting.

[0061] Table 2: Store the PCIs that are already in use;

[0062] What is included from this list can be considered in two modules:

[0063] The first module is the fixed PCI i...

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Abstract

The invention discloses a MRS (Mobile Relay Station) PCI (physical cell ID) distribution method. The method comprises the following steps: step A, a PCI distribution detection list is configured at the terminal of a macro base station of each cell; step B, information interaction of the PCI distribution detection lists can be carried out between the macro base station of the cell in which the MRS locates and macro base stations of the cells adjacent to the cell in which the MRS locates so as to predict a possible PCI collision caused by the MRS; step C, if a collision is predicted, the macro base station of the cell in which the MRS locates can redistribute a PCI for the MRS to avoid the predictable collision. In the invention, the PCI of the MRS is configured at the terminal of the macro base station to detect the MRS entering in the cell in advance and can be changed in advance if a collision happens, thus avoiding the happening of PCI collision; besides, the invention transfers the work of PCI configured by an OAM (Operation Administration and Maintenance) to the macro base station in which the MRS locates, so the delay brought from the OAM configuration can be avoided; and meanwhile, the monitoring and reporting works of the MRS can be saved, the processing load and the signaling cost of the MRS can be alleviated and the backhaul link resource can be saved.

Description

technical field [0001] The invention belongs to the field of wireless communication, is oriented to the fourth-generation mobile communication technology, and relates to an MRS PCI allocation method. Background technique [0002] The mobile communication technology with the greatest development potential and the broadest market prospect in today's communication field has ushered in the 3G era. However, in order to solve problems such as the shortage of spectrum resources, limited system capacity, and increasing UE demand, the International Telecommunication Union (ITU) launched the technical solicitation work for the fourth-generation mobile communication system IMT-Advanced in February 2008. In response to the ITU-R IMT-Advanced technical solicitation, 3GPP, which once formulated the most influential 3G UMTS technical standard in the industry, was unwilling to be left alone, and launched the LTE-Advanced standard process in March 2008. A characteristic of the LTE-A system ...

Claims

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Application Information

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IPC IPC(8): H04W8/26H04W16/02H04W16/24H04W24/00
Inventor 杜婷徐景杨馨朱元萍
Owner SHANGHAI RES CENT FOR WIRELESS COMM
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