Uplink bandwidth allocation method and system for WiMAX system

Abstract

The invention provides an uplink bandwidth allocation method for a WiMAX system, which comprises the following steps of: A, calculating scheduling factors for UGS and ertPS service connection, and performing bandwidth allocation on each UGS and each ertPS service connection according to the order of the scheduling factors; B, calculating scheduling factors of ertPS, rtPS and nrtPS service connection bandwidth requests, and performing bandwidth allocation on each ertPS, rtPS and nrtPS service connection bandwidth request according to the order of the scheduling factors; C, performing bandwidth allocation on unicast; D, performing bandwidth allocation on a BE service connection bandwidth request; and E, establishing a UL-Map message according to bandwidth resources allocated to mobile user terminals so as to broadcast and inform the mobile user terminals to send data or a bandwidth request in the next frame according to the allocated bandwidth. The invention also provides an uplink bandwidth allocation system for the WiMAX system. The method and the system have the advantages of fully utilizing network resources, improving system throughput, having a simple algorithm, facilitating hardware and software implementation, and reducing equipment cost.

Description

technical field [0001] The invention relates to the technical field of wireless broadband access, in particular to an uplink bandwidth allocation method and system for a WiMAX system. Background technique [0002] Since WiMAX is an emerging wireless broadband access technology, the current IEEE 802.16 protocol does not define the uplink bandwidth allocation and scheduling method. Specifically for the PMP mode in the 802.16 protocol, how to allocate and schedule bandwidth resources in base stations, how to effectively configure bandwidth request policies and utilize limited wireless bandwidth resources, there are still few technical researches at present. Therefore, researching and proposing an effective uplink bandwidth allocation method that can make full use of network resources and increase system throughput has become one of the key points in the development and implementation of WiMAX networks. [0003] In the WiMAX standard, in order to ensure the service quality of v...

AI Technical Summary

Problems solved by technology

[0012](2) Fairness: If the variability of the wireless link is not considered, the following situation is likely to occur: according to a certain scheduling strategy, a packet is scheduled on the wireless link When transmitting, the link is actually in an error state, which wastes transmission bandwidth

However, they do not give too much consideration to wireless link variability, fairness, throughput, and implementation complexity.

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