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Switching back method after failure of relay switching

A relay switching, physical layer technology, applied in the direction of electrical components, synchronization devices, radio/induction link selection and arrangement, etc., can solve the problems of RRC misjudgment, RRC wrong action, etc., to save the switchback speed and avoid RRC wrong action. Effect

Active Publication Date: 2007-03-21
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

If the UE detects that the radio link fails during the handover process, it will cause a misjudgment by the RRC and cause the RRC to take wrong actions.

Method used

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  • Switching back method after failure of relay switching
  • Switching back method after failure of relay switching
  • Switching back method after failure of relay switching

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Embodiment Construction

[0041] The core of the present invention is that during the relay handover process of the UE, if the UE RRC detects that the physical layer has not been synchronized within the specified time, it will perform a switchback operation, and the specified physical layer will be activated immediately, and the uplink and downlink will be activated simultaneously . In order to enable the UE to re-establish synchronization with the original cell after the handover and continue to perform various measurements before the handover, the UE keeps recording the synchronization deviation parameters between the UE and each neighboring cell and the measurement control message configured by the network side during the handover process. When the handover of the UE fails and the switchback configuration is performed, RRC can invert the recorded synchronization deviation parameter and configure it to the physical layer, and then RRC (radio resource control) waits for the switchback synchronization i...

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Abstract

A method for carrying out back-switch after relay switching over is failure includes activating up link and down link of assigned physical layer simultaneously and immediately when physical layer being not synchronized with object cell in specified time is detected out by user device, obtaining user date sent by original cell base station and carrying out synchronization with said base station by physical layer as well as transmitting user data to high level layer of user device by physical layer simultaneously for holding communication with original cell base station.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method for switching back after a relay switching fails. Background technique [0002] Since the mobile communication system adopts a cellular structure, when a UE (user equipment) crosses a cell divided by space, it must perform handover, that is, to complete the transfer of the air interface from the UE to the base station, and from the base station to the network portal and from the network portal to the switch. The corresponding transfer of the center. In the TD-SCDMA (Time Slot-Synchronous Code Division Multiple Access) system, the relay handover technology is used to realize the handover. Its design idea is to use technologies such as smart antennas and uplink synchronization to determine whether the mobile station has moved to a phase that can be handed over based on the distance and azimuth of the mobile station, and according to the azimuth and distance i...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04W36/30H04W56/00
Inventor 熊军衡荟欣全海洋
Owner DATANG MOBILE COMM EQUIP CO LTD
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