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Service quality guarantee method for broadband radio access network media accessing control layer

A medium access control, broadband wireless technology, used in data exchange networks, digital transmission systems, electrical components, etc.

Inactive Publication Date: 2007-09-12
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a service quality assurance method for the media access control layer of a broadband wireless access network. Quality of service assurance at the ingress control layer

Method used

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  • Service quality guarantee method for broadband radio access network media accessing control layer
  • Service quality guarantee method for broadband radio access network media accessing control layer
  • Service quality guarantee method for broadband radio access network media accessing control layer

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0132] FPGA, DSP, ASIC (ARM core) can be used in the base station and the sub-station to realize the QoS guarantee system of media access control layer. When the system is initialized, the registers of all modules are cleared. The four types of service classification in the IEEE 802.16 system are Unsolicited Granted Service (UGS), Real-time Polling Service (rtPS), Non-real-time Polling Service (nrtPS) and Best Effort Service (BE), corresponding to the first, third, and fourth , 5 types of services, in addition, an unsolicited authorization portability request service (UGPRS) corresponding to the 2nd type of service is added.

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[0136] The uplink service connection queue buffer of the substation caches the application data identified by the connection ...

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Abstract

This invention belongs to a classification of service quality Broad Band wireless access network technology, its characteristics is that the service is divided into five categories and increase of variable-length packet, variable bit rate, real-time services fluctuations gentle flow; The sub-stations and base stations are made a detailed functional breakdown, the business services is established by admission control module to accept or reject IP layers; reading bandwidth allocation module with a wide range of services requested bandwidth connections with the quality of service parameters and distribution system available bandwidth, different sub-stations authorized obtained the total bandwidth; using uplink and downlink scheduling of the total bandwidth in accordance with its mandate and the necessary bandwidth, by service Priority service connecting the various dispatching through lower physical layer interface to send the media access control layer of data and control information. Not only satisfy a wide range of services connecting service quality requirements, but also take into account the unexpected increase in the data, increased fairness between sub-station and inter-connecting different priority-class service.

Description

technical field [0001] The invention belongs to the field of broadband wireless access network with graded service quality. Background technique [0002] Today broadband wireless access has become an important means of high-speed Internet connection, integrated data, voice and video transmission. The broadband wireless access technology based on the IEEE 802.16 standard has the advantages of high transmission rate and guaranteed quality of service (QoS), and is an excellent choice for the last mile access in the metropolitan area network. At the same time, in order to realize my country's independent intellectual property rights, the Broadband Wireless Multimedia Group uses CoMAC technology to integrate broadcasting and communication systems at the media access control layer (MAC). Although the signaling mechanism of the media access control layer is defined in the two standards, radio resource management and scheduling, which play an important role in ensuring the quality ...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L12/56H04L47/80
Inventor 贺媛曾烈光金德鹏
Owner TSINGHUA UNIV
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