District switching method capable of improving switching success rate

A cell handover and success rate technology, applied in the field of communication, can solve the problems of increasing the delay and failure of the control plane of the user terminal, and achieve the effect of improving the success rate and reducing the delay

Inactive Publication Date: 2009-06-24
SHANGHAI RES CENT FOR WIRELESS COMM
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AI Technical Summary

Problems solved by technology

If the target base station cannot correctly receive the handover confirmation message sent by the user terminal, then the user terminal performs the RRC re-establishment process [see Reference 2 "3GPP TR 36.331," Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Re

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  • District switching method capable of improving switching success rate
  • District switching method capable of improving switching success rate
  • District switching method capable of improving switching success rate

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[0039] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] The present invention discloses a cell handover method that improves the handover success rate. When a serving base station sends a handover command to a handover user, the handover target base station also sends a handover command to the same handover user; when the user terminal feeds back a handover confirmation message, the serving base station and The target base station can detect this message. By adopting the technical scheme of the present invention, the probability that the handover user successfully receives the handover command can be improved on the premise that the L1 and L2 control signaling of the LTE system is not basically changed, the delay of the user control plane is reduced, and the time for the user to successfully handover can be accelerated.

[0041] The present invention specifically includes a handover preparati...

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Abstract

The invention discloses a subdistrict switching method which can improve the switching success ratio, wherein, when a service basic station transmits a switching command to a switching user, a switching target basic station can also transmit the switching command to the same switching user; when a user terminal feedbacks switching confirmation information, the service basic station and the target basic station both detect the information. The method can effectively improves the success ratio that the switching command information is received by the user terminal by the technology that the service basic station and the target basic station can both transmit the switching command information to the user terminal; in addition, the switching confirmation information fed back by the user terminal can be detected by both the service basic station and the target basic station, so as to avoid the re-establishing of the radio resource control (RRC) connection as the user terminal does not receive the switching command information or the target basic station does not receive the switching confirmation information, thus reducing the time lapse of a user terminal control plane and improving the switching success ratio.

Description

technical field [0001] The invention belongs to the technical field of communication, relates to a cell switching method, in particular to a cell switching method which improves the switching success rate. Background technique [0002] In a wireless communication system, because the user has mobility, the system needs to support the handover of the user between different base stations. In the Wideband Code Division Multiple Access (WCDMA) system, a key technology introduced is soft handover. The user terminal measures the signal quality of the common pilot channel (CPICH) of adjacent cells, establishes and maintains a dedicated channel (DCH) active set according to the measurement results, and maintains a soft handover connection with the cells in the dedicated channel (DCH) active set to maintain data transmission . The cells in the active set may belong to the same base station or different base stations. Compared with the Global System for Mobile Communications (GSM) i...

Claims

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Application Information

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IPC IPC(8): H04W36/08H04W36/24
Inventor 金圣峣芮赟田金凤易辉跃胡宏林
Owner SHANGHAI RES CENT FOR WIRELESS COMM
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