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An auto-regulation method on network time delay at ABIS mouth

An automatic adjustment, port network technology, applied in the field of mobile communication, can solve the problems of PATE value error, great influence, wrong forward frame sequence number, etc., to achieve the effect of improving tolerance and improving call success rate

Active Publication Date: 2011-06-22
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are also some problems with PATE value adjustment: because the PATE value is inaccurate, the calculation of the forward frame number based on the PATE value may be wrong, so the frame number is adjusted again before the PATE value of the adjusted frame number is not fed back.
At the same time, using the PATE value adjustment, the PATE value must be calculated every 20msCHM, which has a great impact on the CPU. In order to save CPU, many systems use a fixed advance method, but the delay that can be tolerated by the fixed advance method is fixed. Once the delay exceeds the tolerance range, there will be a lot of frame loss

Method used

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  • An auto-regulation method on network time delay at ABIS mouth
  • An auto-regulation method on network time delay at ABIS mouth
  • An auto-regulation method on network time delay at ABIS mouth

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Experimental program
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Embodiment 1

[0034] like figure 2 as shown,

[0035] (1) When a call is established, the database allocates CE, SE resources and corresponding frame offsets;

[0036] (2) The SDM determines the initial fixed number of frames in advance according to the frame offset of the SE and the frame offset of the CE;

[0037] (3) CHM caches the frame received from SDM and sends it according to the time corresponding to the frame number. If CHM judges that it cannot be sent in time due to network delay, it will calculate the corresponding PATE value according to the PATE value adjustment algorithm, and the calculated The PATE value is filled in the reverse service frame and fed back to SDM. If it can be sent in time, the PATE value is directly filled with 0;

[0038] (4) SDM receives the reverse business frame from CHM, and takes out the PATE value from it. If it is 0, it will not be adjusted. If it is not 0, it will be counted. If the number of consecutive times that the PATE value is not 0 reache...

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Abstract

The invention relates to a method for automatically adjusting time lag of an Abis interface network. A base station controller sends a front service frame based on primarily fixed and advanced frame numbers and adjusts the fixed and advanced frame numbers according to time adjusting information that exceeds preset threshold values between the base station controller and a base station transceiver, and the time adjusting information comprises but is not limited by PATE values. The method combines fixed advance and PATE adjustment, can self-adapt the time lag of the Abis interface network basedon not consuming too much CPU, thus improving tolerance ranges and calling success ratio of time lag variation.

Description

technical field [0001] The invention relates to mobile communication, in particular to a method for automatically adjusting network time delay at an ABIS port. Background technique [0002] In a CDMA system, an Abis interface refers to an internal interface between a BSC (Base Station Controller, Base Station Controller) and a BTS (Base Transceiver System, Base Transceiver System), and is used to transmit signaling and media flow information. In the process of sending the service channel of the code division multiple access CDMA system, the BTS sends a service frame to the MS (Mobile Station, mobile station) every frame time (usually a frame time is 20ms), and the MS sends a reverse service frame to the BTS . For soft handover, when MS communicates with more than two BTSs, the time points of the frames sent by the two BTSs must be synchronized; otherwise, the MS will not be able to demodulate correctly during the handover. After passing through the Abis interface, each for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00H04W28/14H04B7/26
Inventor 李平华蒋峄杨宝国孙云山
Owner ZTE CORP