District switching method capable of improving switching success rate

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...

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 Resource Control (RRC) )", 2008. "], and it is possible to carry out the process of cell reselection, if the selected cell does not have the context of the user, the RRC reconstruction process will fail, which will greatly increase the delay of the user terminal control plane

Images