Method for controlling service priority for tunneling data packet in general packet wireless service
A general packet radio and control method technology, applied in the field of code division multiple access mobile communication systems, can solve the problems of occupying large equipment resources, control plane data service general packet radio service support node service quality degradation, SGSN equipment crash, etc. Provides the effect of efficiency of use
Inactive Publication Date: 2003-05-07
HUAWEI TECH CO LTD
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Problems solved by technology
[0003] 1. If the control plane data and user plane data of the GPRS Tunneling Protocol are processed on the same interface, the reliability of the control plane messages will be reduced because the priority guarantee is not performed on the control plane messages of the GPRS Tunneling Protocol.
When the equipment is overloaded, a large amount of control plane data loss will greatly reduce the service quality of the serving general packet radio service support node (SGSN)
[0004] 2. If a dedicated interface device is used to process control plane data, since the data flow of the control plane is not large, and the existing interface device has a strong processing capacity, it will reduce the use efficiency of the interface device
[0005] 3. If the error indication message in the user plane data cannot be separated, processing the error indication message will occupy a large amount of device resources
In this way, when a large number of error indication messages are sent under certain conditions such as restarting the peer device, the local SGSN device will crash due to resource exhaustion.
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[0022] The guiding idea of the tunnel data packet service priority control method in the general packet radio service of the present invention is to control the message of the control plane of the general packet radio service tunneling protocol and the non-T-PDU (GTP-U data) of the user plane of the general packet radio service tunneling protocol. The payload in the packet (that is, the payload in the GPRS Tunneling Protocol User Plane Protocol packet) is pre-analyzed so that it can be controlled together with the T-PDU packet to enhance the quality of service by adding a small amount of system processing. The performance of the system, the specific steps are as follows,
[0023] a. Classify the received GPRS Tunneling Protocol data packets, separate the T-PDU data packets, message packets and error indication data packets, and use the key characteristic value to identify or directly analyze the message type in the data packet during the classification Character.
[0024] b...
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The received data packets of the general packet wireless service tunnel protocol are sorted to separate out the T-PDU data packets, the message packets and the error indication data packets. When the highest priority treatment being carried out, the message packet is put to the highest priority queue. The forwarding context of the T-PDU data is checked so as to obtain the prearranged priority of the T-PDU data. The error indication data packets are filtered, the packets in certain ratio are processed, and the others are discarded. By using the invention, the single interface board can accept the load data of the control surface and the user surface of the GPRS tunnel protocol. The high priority and the high reliability are guaranteed for the data of the control surface.
Description
technical field [0001] The invention relates to a code division multiple access mobile communication system, in particular to a method for controlling the service priority of a tunnel data packet in a general packet radio service (GPRS). Background technique [0002] The concept of Quality of Service (QOS) is widely used in existing communication technologies, and it is mainly proposed for services carried by communication devices without involving the control message flow of the communication devices themselves. This is inseparable from the physical separation of control messages and user plane service data in traditional communication protocols, and the control message flow can be transmitted on the highest priority bearer link. But in GPRS Tunneling Protocol protocol, because it is a tunneling protocol, its transmission bears the weight of in UDP / IP (User Datagram Protocol / Internet Protocol) network and makes the above-mentioned quality of service control method have the ...
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IPC IPC(8): H04L1/00H04L47/31
Inventor 朱奋勤周艳蒋铭
Owner HUAWEI TECH CO LTD