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Method, base station and system for inter-cell handover

An inter-cell and base station technology, applied in the field of communication, can solve the problems of adjacent cell interference and low handover success rate, and achieve the effects of reducing uplink and downlink delay, improving handover success rate, and reducing adjacent cell interference.

Inactive Publication Date: 2015-12-16
郎法望
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the process of implementing the present invention, the inventors found that at least the following problems exist in the prior art: when there are many neighboring cells and the interference of neighboring cells is large, the use of ICIC technology may make the handover signaling exchanged between the UE and the base station during handover Or the data packet is fragmented, resulting in a low switching success rate

Method used

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  • Method, base station and system for inter-cell handover

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Embodiment 1

[0031] The embodiment of the present invention provides a method for inter-cell handover, such as figure 1 As shown, the method includes:

[0032] 101. The source base station sends a handover command to the UE through the handover bandwidth of the source cell, so as to instruct the UE to handover from the source base station to the target base station.

[0033] 102. When the UE exchanges handover signaling with the target base station through the handover bandwidth of the target cell, the source base station performs interference coordination on the handover bandwidth of the target cell, so as to reduce interference to the UE.

[0034] Wherein, the handover bandwidth of the source cell and the handover bandwidth of the target cell may be pre-agreed by the source base station and the target base station, or may be set in the network planning layout, but not limited thereto. The handover bandwidth of the source cell is used for transmitting handover signaling between the sourc...

Embodiment 2

[0038] The embodiment of the present invention provides a method for inter-cell handover, such as figure 2 As shown, the method includes:

[0039] 201. When the UE exchanges handover signaling with the source base station, the target base station performs interference coordination on the handover bandwidth of the source cell.

[0040] 202. When the UE completes handover signaling interaction with the source base station, the target base station stops interference coordination for the handover bandwidth of the source cell.

[0041] 203. The target base station exchanges handover signaling with the UE through the handover bandwidth of the target cell, and completes handover of the UE from the source base station to the target base station.

[0042] Wherein, the handover bandwidth of the source cell and the handover bandwidth of the target cell may be pre-agreed by the source base station and the target base station, or may be set in the network planning layout, but not limited...

Embodiment 3

[0046] The embodiment of the present invention provides a method for inter-cell handover, such as image 3 As shown, the method includes:

[0047] 301. The source base station receives a measurement report sent by the UE, where the measurement report is used to determine a target base station.

[0048] 302. The source base station sends a handover request (handover request) message to the target base station according to the measurement report and RRM (radioresourcemanagement, radio resource management) information; or

[0049] The source base station sends a handover request message to the core network according to the measurement report and the RRM information, and the core network forwards the handover request message to the target base station.

[0050] 303. The target base station receives the handover request message, and sends a response message about the handover request message to the source base station; or

[0051] After receiving the handover request message, the t...

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Abstract

The invention discloses an inter-cell handover method, a base station and a system, which relate to the field of communication technology and are used to solve the problem of low handover success rate caused by high interference from adjacent cells when user equipment performs inter-cell handover. The inter-cell handover method provided by the present invention includes: sending a handover command to the user equipment through the source cell handover bandwidth to instruct the user equipment to switch from the source base station to the target base station; when the user equipment communicates with the target base station through the target cell handover bandwidth When interactive handover signaling is performed, interference coordination is performed on the target cell handover bandwidth to reduce interference to user equipment. The invention is applicable to the communication field and is used for inter-cell handover of user equipment at the edge of a cell.

Description

technical field [0001] The present invention relates to the technical field of communications, and in particular to a method, base station and system for switching between cells. Background technique [0002] In the field of wireless communication technology, the LTE (long term evolution, 3GPP long-term evolution) system is a main trend in the development of communication technology. The LTE system uses OFDMA (orthogonal frequency division multiple access, Orthogonal Frequency Division Multiple Access) as a multiple access method to construct a cellular mobile communication network. The interference within a cell in the system is very small, but the interference between cells cannot be ignored. Especially, when a UE (user equipment, user equipment) at the edge of a cell is handed over between adjacent cells, it suffers from severe interference from adjacent cells. [0003] Currently, an ICIC (inter-cell interference coordination, inter-cell interference coordination) techno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/08H04W16/14H04W88/08
CPCH04W36/0072H04W36/20H04W36/249
Inventor 解应春
Owner 郎法望
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