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Method and device for cell handover

A cell switching and cell technology, applied in the field of communication, can solve problems such as cell switching cannot be completed

Active Publication Date: 2017-11-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a method and device for cell switching, which can solve the problem that cell switching cannot be completed in the case of different-frequency networking between macro cells and micro cells

Method used

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  • Method and device for cell handover
  • Method and device for cell handover
  • Method and device for cell handover

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Experimental program
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Effect test

Embodiment 1

[0222] Figure 3A It is a schematic diagram of a cell switching situation provided by an embodiment of the present invention. refer to Figure 3A , this embodiment is aimed at a macro-micro heterogeneous network composed of a macro cell and a micro cell (real cell 1) under the macro cell. In this embodiment, a guide cell is established for the real cell 1 in advance. Among them, the macro cell uses the frequency point F1, and the micro cell uses the frequency point F2 for networking.

[0223] The cell switching method provided in this embodiment includes the following configuration phase and cell switching phase between cell switching.

[0224] The configuration phase process between cell handovers is as follows:

[0225] 1. Use a single pair of radio frequency transceiver channels to establish a guide cell with the same frequency and different interference as the macro cell for the real cell 1, and the PSC of the guide cell uses the same PSC as the real cell 1;

[0226] ...

Embodiment 2

[0244] Figure 4 It is a schematic diagram of a cell switching situation provided by an embodiment of the present invention. refer to Figure 2A , this embodiment is aimed at a macro-micro heterogeneous network composed of two macro cells and one micro cell (real cell 1). Wherein, two macro cells use frequency points F1 and F2 respectively. The micro cell is located under one of the macro cells (specifically under the macro cell F2 in this embodiment), and shares the frequency point F2 of the macro cell. In this embodiment, a guide cell for the macro cell F1 is established in advance for the real cell 1 .

[0245] The configuration phase process between cell handovers in this embodiment is as follows:

[0246] 1. Use a single pair of radio frequency transceiver channels to establish a guide cell with the same frequency and different interference as the macro cell F1 for the real cell 1, and the PSC of the guide cell uses the same PSC as the real cell 1;

[0247] 2. On the...

Embodiment 3

[0259] Figure 5 It is a schematic diagram of a cell switching situation provided by an embodiment of the present invention. refer to Figure 5 , this embodiment is aimed at a macro-micro heterogeneous network composed of three macro cells and one micro cell (real cell 1). Among them, the three macro cells respectively use frequency points F1, F2 and F3. The micro cell is located under one of the macro cells (specifically under the macro cell F3 in this embodiment), and shares the frequency point F3 of the macro cell. In this embodiment, two guide cells are established for the real cell 1: one guide cell is for the macro cell F1, and the other guide cell is for the macro cell F2.

[0260] The configuration phase process between cell handovers in this embodiment is as follows:

[0261] 1. Use a single pair of radio frequency transceiver channels to establish a guide cell 1 with the same frequency as the macro cell F1 and a guide cell 2 with the same frequency and no interfe...

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Abstract

The present invention provides a method and device for cell switching, which relates to the field of communications and is used to solve the problem that cell switching cannot be completed when macro cells and micro cells are networked at different frequencies. The method includes: the target base station receives a relocation request message, the relocation request message is used to instruct the user equipment to switch from the source cell of the source base station to the guide cell of the target base station; the target base station responds to the relocation request message, the user equipment is switched to the guide cell; the target base station switches the user equipment from the guide cell to the real target cell of the target base station; wherein the guide cell of the target base station is the same as the guide cell of the target base station. The source cell of the source base station is a cell with the same frequency but with a different primary scrambling code; the real target cell of the target base station is a cell with a different frequency than the guide cell but with the same primary scrambling code. The invention is used for cell handover.

Description

technical field [0001] The present invention relates to the communication field, in particular to a cell switching method and device. Background technique [0002] Wireless communication has entered a period of explosive growth of data services. In order to increase network capacity and reduce transmission costs, a heterogeneous network (Heterogeneous Network, Hetnet) technology has been proposed in the industry. A heterogeneous network is composed of multiple cells of different sizes and types, including macro cells (Macro cells) and micro cells. The micro cells include: a micro cell (Micro cell), a pico cell (Pico Cell), a femto cell (Femto Cell), a cell in the form of a remote radio head (Remote Radio Head, RRH), and the like. By deploying more micro-cells in traffic-intensive areas, the network capacity of the area can be effectively increased, and the construction costs (Capital Expenditure, Capax) and operating costs (Operating Expense, Opex) of micro-cells are relati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/04H04W36/00
CPCH04W36/13
Inventor 孙海珊牛晓莉
Owner HUAWEI TECH CO LTD
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