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Method and apparatus for judging timing inconsistency between user equipment (ue) and network side

A consistent technology on the network side, applied in the direction of synchronization devices, electrical components, wireless communication, etc., can solve problems such as handover failure and timing inconsistency

Active Publication Date: 2015-04-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the application scenario is a switching scenario, the abnormal situation will inevitably lead to switching failure
In a nutshell, the WCDMA standard system does not have a fault-tolerant mechanism for system exceptions such as "the timing of the UE and the AP is inconsistent"

Method used

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  • Method and apparatus for judging timing inconsistency between user equipment (ue) and network side
  • Method and apparatus for judging timing inconsistency between user equipment (ue) and network side
  • Method and apparatus for judging timing inconsistency between user equipment (ue) and network side

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Experimental program
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Embodiment 2

[0080] The difference between the scheme of Embodiment 2 and the scheme of Embodiment 1 is that after L1 reports that the timing of the L3 UE is inconsistent with the AP (wrong frame), it actively performs reconfiguration of L1-related channels without waiting for the reconfiguration signaling of L3, while L3 only performs reconfiguration for L2 Only relevant channels need to be reconfigured, which can speed up the reconfiguration process and shorten the delay.

[0081] The technical solution of Embodiment 3 of the present invention is different from Embodiment 1 and Embodiment 2 in that this solution completes the error-tolerant processing of timing inconsistency (wrong frame) between UE and AP at the physical layer, without requiring corresponding processing by L2 and L3. Deskew is faster.

[0082] Its core idea includes two points: first, the physical layer caches the demodulated data, and the cache time period is centered on the current CFN, and the cached data length is d...

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Abstract

The present invention provides a solution for an abnormal condition of the timing inconsistency (wrong frame) between a User Equipment (UE) and a Base Station (BS) in a wireless communication system. The solution includes a method and an apparatus for judging timing inconsistency between the UE and the BS. And the method includes the following steps of: by demodulating an uplink Dedicated Physical Control Channel (DPCCH) of the UE, obtaining a corresponding relationship of a Transport Format Combination Indicator (TFCI) and two parameters corresponding to a Single Frequency Network (SFN); according to the TFCI, educing reversely a Transport Format Indicator (TFI) of a Dedicated Channel (DCH) bearing a signaling; according to the TFI, finding a wireless frame sequence bearing signaling data during a Transmission Time Interval (TTI), and considering the relationship of SFN and TTI corresponding to a first frame, judging that the timing is abnormal or not. The technical solution of the present invention, based on the judgment of the timing inconsistency (wrong frame) between the UE and the BS side, re-allocates the timing of a physical channel of the BS side, enables timing consistency between the UE and the BS side; and also, by adjusting selection mode of decoded wireless frame data in a physical layer, ensures that the decoded data in the physical layer are data sent from the UE side in a TTI rather than data crossing the border of a TTI, with which the problem of timing inconsistency between the UE and the BS side is solved.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method and a device for judging timing inconsistency between a user equipment (UE) and a network side. Background technique [0002] Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access) is a synchronous system. Timing is the basis of the synchronous system. The WCDMA system operates based on timing synchronization. Timing synchronization is the prerequisite and condition for the normal operation of the system. The user equipment (UE) completes synchronization with the base station (Node B) when performing cell search; the UE achieves timing consistency with the base station by demodulating system messages. That is, the UE adjusts its own timing according to the downlink common channel (synchronization channel, pilot channel, broadcast channel, etc.) of the base station to achieve frame synchronization, time slot synchroniza...

Claims

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Application Information

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IPC IPC(8): H04W56/00
CPCH04W56/00
Inventor 俞新民蔡建恒李浩宁富勇
Owner HUAWEI TECH CO LTD