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A realization method for D channel link access regulation

A technology of a link access procedure and an implementation method, which is applied to the implementation field of the D channel link access procedure, can solve the problems of partial function loss of the base station, increased maintenance work of the LAPD link, etc., so as to save time slot resources and improve robustness The effect of reducing the probability of base station failure

Inactive Publication Date: 2008-08-06
ZTE CORP
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Problems solved by technology

This greatly increases the maintenance work of the base station controller on the LAPD link, and the resources between these LAPD links are independent of each other, so the failure of any LAPD link will lead to the loss of some functions of the base station

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  • A realization method for D channel link access regulation

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Embodiment Construction

[0026] The idea of ​​the method of the present invention is: if only through the improvement of the software protocol without making hardware changes, one LAPD link can be carried on multiple physical channels, and these channels can be freely configured, have equal status, and work together. The method is load sharing, then the maintenance work of the LAPD link of the base station is greatly reduced, and the failure of a single physical channel will not cause any functional failure of the base station. In addition, the load sharing method can also reduce the number of physical channels used for control plane message transmission and increase the number of user plane physical channels used for voice and data transmission, which is especially necessary for precious Abis port physical resources.

[0027] By improving the original LAPD protocol, the present invention realizes the LAPD communication scheme carried by multiple load-sharing physical channels (time slots). The presen...

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Abstract

The present invention discloses a method for realizing a link access procedure on a D channel; the link access procedure on the D channel is as follows: an LAPD link is borne by one or a plurality of physical channels; an assembly of the physical channels which bears one LAPD link forms a channel cluster; a realtime uplink and downlink communication state test is carried out on each of the physical channels contained by the channel cluster; according to the test result, one of the available physical channels is selected for sending a data frame before each time of sending the data frame of the LAPD link. Through the realizing method of the present invention, one LAPD link can be borne on the channel assembly formed by a plurality of physical channels, wherein the plurality of physical channels can be configured freely, the statuses of the channels are equivalent, the working means of the channels is load sharing, and the channels accomplish the load work of one LAPD link jointly.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for implementing a Link Access Procedure on the D channel (LAPD for short). Background technique [0002] E1 (European transmission standard, the rate is 2Mbps) transmission is a widely used transmission medium in mobile communications, and the LAPD protocol has become the most widely used Abis port (communication interface between mobile communication base station and base station controller) data link. road layer protocol. With the development of Ethernet technology application, IP Abis technology based on packet transmission is becoming more and more mature, and it is the general trend that IP Abis replaces traditional E1 Abis. However, because the current mainstream mobile communication operators still retain a large number of E1 transmissions, IP Abis will coexist with E1 Abis for quite a long period of time. [0003] LAPD is a protocol that works on the data lin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L1/20H04L29/08H04L12/803
Inventor 刘晨吉
Owner ZTE CORP
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