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Coordinated multi-point transmission control method and device during cell handover

A technology of multi-point transmission and cell switching, which is applied in the fields of electrical components, wireless communication, network data management, etc.

Active Publication Date: 2018-01-16
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The purpose of the present invention is to provide a method and device for controlling CoMP transmission in the process of cell handover, so as to solve the problem of how to deal with the CoMP UE's CoMP transmission when the CoMP UE performing CoMP UE performs cell handover

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  • Coordinated multi-point transmission control method and device during cell handover
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  • Coordinated multi-point transmission control method and device during cell handover

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Embodiment Construction

[0116] The core idea of ​​the embodiment of the present invention is: during the cell handover process, if it is determined that the target base station supports CoMP transmission for the terminal, maintain the CoMP transmission for the terminal; transmission, deactivating the CoMP transmission of the terminal, and instructing other access network nodes in the coordination set to deactivate the CoMP transmission for the terminal, without ensuring the continuity of the CoMP transmission of the terminal.

[0117] The embodiments of the present invention are not only applicable to LTE and LTE-A networks, but also applicable to other communication networks with CoMP transmission.

[0118] Before describing the embodiments of the present invention in detail with reference to the accompanying drawings, technical terms involved in the embodiments of the present invention will be explained first.

[0119] A CoMP UE refers to a UE that supports CoMP transmission. The technical problem...

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Abstract

The invention discloses a coordinated multipoint transmission control method and device during cell handover. The method includes: after the serving base station determines to perform cell switching for the terminal, it determines whether the target base station supports coordinated multipoint transmission for the terminal; if so, sends a switching notification message to other access network nodes in the cooperation set, which carries the terminal's Identification information, identification information of the target base station and coordinated multipoint transmission maintenance instruction information. If not, deactivate coordinated multipoint transmission for the terminal, and send a message indicating deactivation of coordinated multipoint transmission to other access network nodes. If other access network nodes receive the handover notification message, they determine that the terminal switches to the target base station and continue coordinated multipoint transmission; if they receive a message to deactivate coordinated multipoint transmission, they deactivate the coordinated multipoint transmission of the terminal. The embodiments of the present invention solve the problem of how to handle the coordinated multipoint transmission of a terminal that performs coordinated multipoint transmission when the terminal performs cell switching.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for controlling CoMP transmission during cell handover. Background technique [0002] In the Long Term Evolution (LTE) system, the UE performs cell handover process as follows: [0003] The source evolved base station (eNB) makes a decision to perform X2 handover for the UE according to the measurement result reported by the user equipment (User Equipment, UE). [0004] The source eNB sends a handover request message to the target eNB. [0005] After receiving the handover request message, the target eNB configures a new bearer for the UE, and if the configuration is successful, the target eNB returns a handover response message to the source eNB. [0006] After receiving the handover response message, the source eNB sends a Radio Resource Control (RadioResourceControl, RRC) reconfiguration message to the UE, and stops receiving and se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W8/24H04W36/00H04W72/12
CPCH04W36/08H04W36/0061H04W36/00692
Inventor 付喆
Owner DATANG MOBILE COMM EQUIP CO LTD
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