Self-adaption resource allocation method in orthogonal frequency division multiplexing multi-address access system

An access system, orthogonal frequency division technology, applied in the field of subcarrier allocation

Inactive Publication Date: 2008-01-02
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, few technical literatures consider the allocation of subcarriers when a new user requests to enter the system

Method used

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  • Self-adaption resource allocation method in orthogonal frequency division multiplexing multi-address access system
  • Self-adaption resource allocation method in orthogonal frequency division multiplexing multi-address access system
  • Self-adaption resource allocation method in orthogonal frequency division multiplexing multi-address access system

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Embodiment Construction

[0038] Below in conjunction with accompanying drawing, the method of the present invention is described in further detail:

[0039] In order to clearly describe the idea of ​​the present invention, some assumptions are specially made: in the OFDMA system, it is assumed that K-1 users are already in the active state, that is to say, the minimum number of subcarriers that these K-1 users need to allocate It has been determined that these K-1 users are respectively recorded as users 1, 2, ..., K-1, and now there is a Kth user who is ready to enter the activation state. For the convenience of description, the set of these K users is recorded as U.

[0040] In order to solve the above problems, the present invention provides a method for resource allocation in an Orthogonal Frequency Division Multiple Access (OFDMA) system. The basic idea of ​​the method is to meet the basic service requirements of each user in the system. Under the premise, assign as many subcarriers as possible t...

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Abstract

The invention relates to a wireless mobile communication system, in particular to a method for realizing self-adaptive resource distribution of orthogonal frequency-division multiplex multiple access system. The inventive method comprises that base station confirms the user number with access allowance (sub carrier distribution), the base station confirms the number and power of sub carriers distributed by each user, the base station decides the exact sub carriers distributed by each user. The invention resolves the problem for confirming the number of sub carriers when user requests to access system. Compared with traditional static sub carrier distribution, the invention is dynamic, which can distribute engouh sub carriers for each user with minimum system emission power, to realize frequency diversity. The invention can overcome the iteration confirm process of complex filling level in filling algorism, to avoid iteration and simplify operation.

Description

technical field [0001] The present invention relates to a wireless mobile communication system, in particular to a method for realizing adaptive resource allocation in an Orthogonal Frequency Division Multiple Access (OFDMA) system, in particular to a method for implementing adaptive resource allocation in an Orthogonal Frequency Division Multiple A subcarrier allocation method is realized in OFDMA system. Background technique [0002] Spectrum resources in wireless communication systems are very limited, therefore, wireless mobile communication systems must utilize these limited frequency resources reasonably. Especially in future mobile communication systems, users have more and more business demands for high-speed and high-quality data transmission, so how to provide high-quality services for more users on limited radio frequency resources is becoming more and more important. In frequency selective fading environments, OFDM is a promising solution. [0003] Orthogonal F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04Q7/38H04W72/04
CPCH04L27/2608H04L5/023H04W72/04H04L5/0044
Inventor 蒋小奎张力王衍文王强
Owner ZTE CORP
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