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Method for distributing time frequency resource of OFDM system and system thereof

A time-frequency resource and orthogonal frequency division technology, applied in the field of time-frequency resource allocation, can solve problems such as poor inter-cell interference suppression effect, and achieve the effect of reducing the degree of interference in the network, improving the interference suppression effect, and reducing the planning granularity.

Inactive Publication Date: 2009-05-20
CHINA MOBILE GROUP DESIGN INST
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Problems solved by technology

[0007] Embodiments of the present invention provide a method for allocating time-frequency resources in an OFDM system and its system, so as to solve inter-cell interference suppression caused by not allocating time-frequency two-dimensional characteristics of resource management in the prior art The problem of poor performance

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  • Method for distributing time frequency resource of OFDM system and system thereof
  • Method for distributing time frequency resource of OFDM system and system thereof
  • Method for distributing time frequency resource of OFDM system and system thereof

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Embodiment Construction

[0029] The embodiment of the present invention aims at the time-frequency two-dimensional characteristics of OFDM / OFDMA system resource management and scheduling, proposes a time-frequency unit-resource block allocation method based on resource management, and proposes OFDM / OFDMA dynamic time frequency allocation method. The allocation method provided by the embodiment of the present invention not only absorbs the advantages of the traditional frequency allocation method, but also strengthens the pertinence of OFDM / OFDMA technology. The dynamic allocation method further improves the performance of planning, and better controls and manages OFDM / OFDMA groups. Internet interference.

[0030] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] In OFDM / OFDMA systems, resource management and scheduling are time-frequency two-dimensional. In terms of time, scheduling management is generally performed in units...

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Abstract

The invention discloses a method for allocating time-frequency resources in an orthogonal frequency division multiplexing system and a system thereof. The method comprises the following steps: the quantity N of cells contained by each cluster and the quantity S of sectors contained by each cell are determined; usable time-frequency resources are divided into N*S time-frequency resource block groups; the N*S time-frequency resource block groups are allocated to the vectors of the cells by allocating the time-frequency resource block groups to the vectors for many times, wherein when the time-frequency resource block groups are allocated for the vectors each time, the time-frequency resource block groups allocated to the vectors are different from each other, allocated time-frequency resources in each sector are different from each other, and the priority level is preset for the time-frequency resources allocated to the sectors from high to low according to the allocation sequence so that base station equipment performs resource scheduling according to the priority level of the time-frequency resources in the vectors. The adoption of the method can aim at the time-frequency two-dimensional characteristic of resource management to perform resource planning and allocation, and strengthen the interference inhibition effect among the cells.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for allocating time-frequency resources in an orthogonal frequency division multiplexing system and a system thereof. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) technology was proposed in the 1960s as a high-speed transmission technology for wireless communication systems. In recent years, with the rapid development of digital signal processing technology and integrated circuit technology, the The technology has been applied in a variety of communication standards, such as IEEE 802.16 series standards, 3GPP Long-Term Evolution (LTE), etc., and is expected to become a mainstream key technology in the next-generation mobile communication system IMT-Advanced. [0003] Like other cellular communication systems, the OFDM system also needs to determine the frequency reuse mode and perform frequency planning during network planning, amo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04J11/00
Inventor 高鹏孟德香程楠吴晓岩宋智源
Owner CHINA MOBILE GROUP DESIGN INST
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