Stream control transmission protocol (SCTP) based group calling business data packet identification method

Abstract

The invention discloses a stream control transmission protocol (SCTP) based group calling business data packet identification method. The method comprises the steps of firstly, before a cluster scheduling business is established, determining that an available SCTP association exists between a wireless access system and a cluster server; then, allocating stream identifiers in establishment of the cluster scheduling business; next, when a group calling business data sending party sends business data, carrying the stream identifiers in the data for group calling business data packet identification; and finally, when a business data receiving party receives the group calling business data, performing packet identification on the group calling business data according to the stream identifiers carried in the data. Through adoption of the method, port resource use ratio is greatly improved, transmission identification efficiency is improved remarkably, processing complexity of the wireless access system and the cluster server is lowered effectively, system capacity is increased, system expandability is enhanced, and operating cost of the cluster communication network is lowered.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a trunking communication system, in particular to a group call service data packet identification method based on the SCTP protocol. Background technique [0002] With the development of wireless communication technology, trunking communication system, as a flexible and efficient command and dispatch communication system developed in recent years, is widely used in government agencies, airport terminals, fire police, industrial and mining enterprises and other fields. The so-called trunking communication system means that the available channels of the system can be shared by all users of the system. The trunking communication system is a multi-purpose, high-efficiency wireless dispatching communication system that shares resources, shares costs, and shares channel equipment and services. [0003] The group call service is one of the most basic and commonly u...

AI Technical Summary

Problems solved by technology

Its technical complexity and processing complexity will seriously affect the call establishment time, and the processing efficiency of a large number of multicast IP will also decrease with the increase of the number of group calls

[0013] In the port-based grouping identification method, when terminals, wireless access systems, and cluster servers are used as receiving ends, different ports are used for different group calls. Since the total number of ports is 65535, its actual use is severely limited and affects the centralization of the system. The scalability of the group call service capacity limits the application value of the trunking system in actual deployment

At the same time, in the case of large-scale networking, due to the many-to-many characteristics of the cluster system networking model, that is, the same group call may involve multiple wireless access systems and multiple cluster servers

In this case, since different wireless access systems randomly assign ports to different group call services, the same group call service data may be sent and received using different ports in different wireless access systems. The cluster server needs to When sending group call service data to different wireless access systems, port information needs to be dynamically adjusted, which will increase the processing complexity of the cluster server, thereby increasing the speed of group call service data processing and forwarding

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