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Switching method between frequencies

An inter-frequency and gap technology, applied in the field of inter-frequency handover, can solve the problems of data transmission link performance degradation, loss of power control bit information, and link quality degradation, so as to improve resource utilization and prevent link signal quality The effect of reducing and shortening the transmission interval

Inactive Publication Date: 2003-07-09
HUAWEI TECH CO LTD
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AI Technical Summary

Problems solved by technology

Due to the large gap generated by the compressed mode, more power control bit information may be lost, resulting in poor performance of the data transmission link. In the process of inter-frequency handover, the signal quality itself has deteriorated, and precise power control is required. control to prevent link quality degradation, so existing inter-frequency handover methods are not conducive to preventing link quality degradation

Method used

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] The DPCCH gating technology is applicable to uplink and downlink data transmission links. When there is no data to be sent, stop sending DPCCH, and when there is data to be sent, resume the sending of DPCCH and DPDCH (dedicated physical control channel and dedicated physical data channel). Since the gating technology adopts the above-mentioned scheme, compared with the compression mode, the gating gap generated by it in a data frame is discontinuous, making the gating gap smaller. If the gating technology is used for inter-frequency switching, the lost TPC Less information. The essence of the present invention is that the UE performs inter-frequency cell synchronization and measurement through the gap generated by the DPCCH gating technology, which can maintain the continuity of power control and improve the performance of inter-frequency switching whi...

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Abstract

A method of switching between frequencies includes the follows: Using the Vser's equipment to detect signal quality of original small area, if detected quality of signal is lower than predefined threshold the measurnig result will be reported to network and the network will define to apply gating technique of special physical control channel for carrying on measurement between frequencies and also to dispose transmission format set, UE and DPCCH gate control parameter at base station side according to the reported rsult; UE and network side will carry on gate control according to the gate control parameter, UE will carry on also quality measurement of signal and synchronization for adjacent frequency small area by using gap created with DPCCH gate control technique and to report measuringresult to network; the network will judge whether the switching between frequencies is ncessary or not according to measured result.

Description

technical field [0001] The present invention relates to a handover method of user equipment (UE) between different base stations in a mobile communication system, especially an inter-frequency handover method. Background technique [0002] In a mobile communication system, when a UE moves from a local base station to a target base station, handover between base stations is usually involved. Since the frequency used by the UE to establish a connection with the local base station or the target base station may be different, this handover is essentially The above is inter-frequency switching. The existing inter-frequency handover scheme is completed using the compressed mode. The specific method is: when the UE detects that the signal quality of the original cell is lower than a certain predefined threshold, it reports the measurement result to the network, and the network, according to the reported result, Configure the compressed mode parameters on the UE and the base statio...

Claims

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Application Information

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IPC IPC(8): H04W36/30H04B7/26
Inventor 李志明
Owner HUAWEI TECH CO LTD