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Wireless resource allocation method and device of OFDMA system

An orthogonal frequency division multiple access, wireless resource technology, applied in the multi-frequency code system, transmission system, wireless communication and other directions, can solve the problem of not considering the relationship between the carrier allocation between time slots, etc., to reduce power and improve system capacity , the effect of reducing complexity

Inactive Publication Date: 2008-05-21
GCI SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current subcarrier allocation research focuses on resource allocation for a certain time slot (for example, allocating resources to users with the best channel status at each moment), without considering the relationship between carrier allocation between time slots

Method used

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  • Wireless resource allocation method and device of OFDMA system
  • Wireless resource allocation method and device of OFDMA system
  • Wireless resource allocation method and device of OFDMA system

Examples

Experimental program
Comparison scheme
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Embodiment

[0037] As shown in Figure 1, a kind of OFDMA system radio resource allocation device, it comprises following modules:

[0038] Acquisition module 1, used to collect all user information that has been connected to the system and the service quality requirement information of each user at the time of the current frame, and output relevant information;

[0039] The scheduling information module 2 is used to divide the resource blocks in the OFDMA frame, receive the user information and service quality requirement information, and respectively calculate the resource blocks that can be allocated to the user when the service quality requirements of each user are met Puzzle, and output the resource pre-allocation information of each user;

[0040] The resource allocation module 3 is used to receive the resource pre-allocation information of each user, select the resource pre-allocation information of several users that can meet the overall performance requirements of the system for r...

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Abstract

The invention discloses a wireless resource distribution method and a device for orthogonal frequency division multiple access system, comprising the following steps: dividing orthogonal frequency multiple access intraframe blocks; collecting all the user information in current frame and information on service quality requirements of the users that accessed to the system; when respectively calculating the service quality requirement for meeting the need of the each user, respectively distributing a resource block pattern to the user continuously as the resource pre-distributive information ofthe user; and selecting the resource pre-distributive information of a plurality of users meeting the integrated performance requirement of the system for resource allocation. The invention has the advantages of ensuring continuous resource acquisition of each user in each frame during distribution of the wireless resource of orthogonal frequency division, enabling the base station terminal to manage the mapping relation between the resource and the user in a simpler way, reducing the received power of the user, increasing the capacity of the entire orthogonal frequency division system, ensuring the minimum rate requirement of the user, and facilitating the expansion to meet higher service quality demand.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and device for allocating wireless resources of an Orthogonal Frequency Division Multiple Access system. Background technique [0002] Orthogonal Frequency Division Multiplex (OFDM) is a multi-carrier communication technology that distributes high-speed data streams to several mutually orthogonal subcarriers with relatively low transmission rates through serial-to-parallel conversion. in the transmission. The OFDM system can effectively eliminate inter-symbol interference (Inter Symbol Interference, ISI for short) and inter-carrier interference (Inter Channel Interference, ICI for short) generated by multipath delay extension, and effectively utilize frequency resources. Orthogonal Frequency Division Multiple Access (OFDMA) is an access technology based on Orthogonal Frequency Division Multiplexing, which realizes multiple access by assigning independent su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/36H04B7/204H04L12/56H04L27/26H04W72/54
CPCY02B60/50Y02D30/70
Inventor 梁锦华张永强
Owner GCI SCI & TECH
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