Method and device for detecting failure of wireless link

A technology of wireless link failure and detection method, which is applied in the field of wireless link failure detection method and device, can solve problems such as long DRX cycle, long startup timer time, terminal cannot detect wireless link failure in time, and achieve timely The effect of detecting and improving sensitivity

Inactive Publication Date: 2010-07-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the process of reporting the out-of-synchronization indication or synchronization indication, the inventor found at least the following problems in the prior art: since only one detection is required in each DRX cycle in the DRX mode, the DRX cycle will be longer, for example: When the DRX cycle is 1s, the physical layer needs to detect the signal quality of the previous 5s before reporting an out-of-sync or in-sync to the upper layer
In the case of the same parameter N310, starting the T310 timer in non-DRX mode needs to continuously send the out-of-sync indication for N310*10ms; and starting the T310 timer in DRX mode needs to continuously send the out-of-sync indication for N310*1s; Therefore, it takes a long time to start the timer in DRX mode, which makes the terminal unable to detect the failure of the wireless link in time

Method used

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  • Method and device for detecting failure of wireless link
  • Method and device for detecting failure of wireless link
  • Method and device for detecting failure of wireless link

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Embodiment 1

[0063] Since N310 is a parameter set for non-DRX mode, the user terminal in this embodiment reconfigures N310' in DRX mode, that is, the rated number of out-of-sync indications in DRX mode. This embodiment provides a detection method for wireless link failure, such as Figure 5 As shown, the method includes:

[0064] 501. Multiply the rated number N310 of out-of-sync indications in the non-DRX mode by the frame period of 10ms to obtain an equivalent detection time T, that is, T=N310*10ms. In this embodiment, assuming that N310 is 10, the calculated equivalent detection time T=100ms.

[0065] 502. Divide the foregoing equivalent detection time T by the DRX cycle, and round down the divided result. In this embodiment, it is assumed that the DRX cycle is 80 ms, then dividing T by 80 and rounding down to an integer equals 1 as the final calculation result. During specific implementation, the result after division may also be rounded up, and the value after rounding up may be us...

Embodiment 2

[0075] The user terminal in this embodiment reconfigures N310' in DRX mode. This embodiment provides another detection method for wireless link failure, such as Figure 6 As shown, the method includes:

[0076] 601. Multiply the rated number N310 of out-of-sync indications in the non-DRX mode by the frame period of 10 ms, and add the physical layer evaluation time in the non-DRX mode to obtain an equivalent detection time T, wherein the physical layer evaluation time in the non-DRX mode It is 200ms (because the signal quality of the first 200ms is evaluated each time), ie: T=N310*10ms+200ms. In this embodiment, assuming that N310 is 10, the calculated equivalent detection time T=300ms.

[0077] 602. Subtract the above equivalent detection time from the physical layer evaluation time in DRX mode, where the physical layer evaluation time in DRX mode may be 5 DRX cycles (because each evaluation is the signal quality of the previous 5 DRX cycles), In this embodiment, assuming t...

Embodiment 3

[0087] The user terminal in this embodiment reconfigures N310' in DRX mode. This embodiment provides another detection method for wireless link failure, such as Figure 7 As shown, the method includes:

[0088] 701. Multiply the rated number N310 of out-of-sync indications in the non-DRX mode by the frame period of 10ms, and add the timer duration in the non-DRX mode (which can be represented by T310) to obtain an equivalent detection time T, namely: T=N310 *10ms+T310. In this embodiment, it is assumed that N310=10, T310=500ms, then the calculated equivalent detection time T=600ms.

[0089] 702. Divide the foregoing equivalent detection time T by the DRX cycle, and round up the divided result. In this embodiment, it is assumed that the DRX cycle is 80 ms, then dividing T by 80 and rounding to an integer equals 7 or 8 as the final calculation result.

[0090] 703. Directly use the above rounded value as the rated number N310' of out-of-sync indications in the DRX mode, that...

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Abstract

The invention discloses a method and a device for detecting failure of a wireless link, relates to the technical field of communication, and solves the problem of large time difference between continuously-received desynchronizing instructions used by starting a timer in a DRX mode and a non-DRX mode in the prior art. In the embodiment of the invention, the rated number of desynchronizing instructions is determined again in the DRX mode so as to change the number of continuously-received desynchronizing instructions required by starting the timer; or a surplus detection time is preset, and the time between the continuously-received desynchronizing instructions required by for starting the timer is limited within the surplus detection time.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for detecting wireless link failure. Background technique [0002] At present, in the LTE (Long Term Evolved, Long Term Evolution) system, the user terminal can realize the detection of radio link failure by the following method: when the physical layer of the user terminal detects that the signal quality of the serving cell is lower than a certain parameter, the user terminal The physical layer of the physical layer sends an out-of-synchronization indication to the upper layer (layer 2 or layer 3). If the upper layer receives a specific number (in the LTE system, the parameter N310 is used to indicate the number) of continuous out-of-synchronization indications, the timer is started (can be Called T310 timer), if the timer expires, it is regarded as a wireless link failure. [0003] For the DRX (discontinuous reception) mode and the non-DRX mode in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00H04W76/00H04B7/26
Inventor 谢明江
Owner HUAWEI TECH CO LTD
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