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Resource distribution method in WiMax system

A resource allocation, Poisson distribution technology, applied in electrical components, sustainable buildings, climate sustainability, etc., can solve problems such as scheduling and resource allocation algorithms are not provided

Inactive Publication Date: 2011-01-19
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Although the IEEE802.16 standard defines different scheduling service types and their QoS working mechanisms, it does not provide specific scheduling and resource allocation algorithms

Method used

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  • Resource distribution method in WiMax system
  • Resource distribution method in WiMax system
  • Resource distribution method in WiMax system

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Experimental program
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Embodiment Construction

[0068] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0069] figure 1 It is a frame diagram of the resource allocation system in the WiMax system. The system includes two parts: base station BS and terminal equipment. Such as figure 1 As shown, the base station includes the following functional modules: packet buffer, scheduler, power allocation, coding and modulation, adaptive beamforming, IFFT and parallel-to-serial conversion, adding cyclic prefix and receiving channel state information modules. The terminal equipment includes the following functional modules: removing cyclic prefix, FFT and serial-to-parallel conversion, combining weights, demodulating and decoding, and extracting channel state information.

[0070] figure 2 Schematic diagram for subcarrier grouping. At the base station, the time axis is divided into frames. Each frame includes control information and data information, and the d...

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Abstract

The invention relates to a resource distribution method in a WiMax system. In the method, the hypothesis is that each connected grouping reaches a base station in the mode of Poisson distribution, and each connection only belongs to one service type of five services of UGS, rtPS, ertPS, nrtPS and BE; and the grouping from the same connection is stored in one buffer zone to arrange in one queue; among the queues, a dispatcher in a base station end dispatches the grouping and distributes a subchannel according to a dispatching priority factor. The method specifically comprises the following steps: firstly, a base station end is divided into different resource blocks, and an equipment end feeds back channel information according to a dividing result; secondly, the dispatcher of the base station end calculates the value of the dispatching utility function of different service types; thirdly, the dispatcher dispatches in an MAC layer according to the obtained dispatching priority function;and finally, a power distribution module in the base station end distributes power on a corresponding subcarrier by a Greedy algorithm according to the result of the dispatcher so as to finish the resource distribution of all services in the WiMax system.

Description

technical field [0001] The invention relates to the field of wireless metropolitan area network access, in particular to a resource allocation method in a WiMax system. Background technique [0002] As a bridge between wireless users and existing wired networks or other service networks, the wireless access network mainly completes the function of forwarding or routing packet services between the network and mobile users. WiMax is based on IEEE802.16 or broadband wireless access standard. It is a wireless metropolitan area network WMAN technology. It is used to connect 802.11a wireless access points to the Internet, and can also connect companies and homes to wired backbone lines. It can be used as a wireless extension technology of cable and DSL to realize wireless broadband access. [0003] The WiMax system can support different multimedia services and provide reliable QoS (Quality of Service) guarantee. In order to achieve the goal of QoS-guaranteed services, different ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/12
CPCY02B60/50
Inventor 胡亚辉慈松唐晖谭红艳
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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