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Method and device for allocating frequency resources in fractional frequency reuse (FFR) system

A technology for frequency resource and frequency allocation, which is applied in the field of frequency resource allocation and can solve problems such as inability to adapt to changes in channel conditions.

Inactive Publication Date: 2012-05-30
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method and device for allocating frequency resources in a partial frequency multiplexing system, which is used to solve the problem in the prior art that cannot adapt to changes in channel conditions when frequency resources with specified multiplexing coefficients are fixedly allocated

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  • Method and device for allocating frequency resources in fractional frequency reuse (FFR) system
  • Method and device for allocating frequency resources in fractional frequency reuse (FFR) system
  • Method and device for allocating frequency resources in fractional frequency reuse (FFR) system

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Embodiment Construction

[0018] Embodiments of the present invention provide a method and device for allocating frequency resources in a partial frequency multiplexing system, which dynamically allocates frequency resources for terminals by monitoring changes in terminal isolation, thereby fully adapting to changing channel conditions.

[0019] An embodiment of the present invention provides a method for allocating frequency resources in a partial frequency reuse system, such as figure 1 shown, including:

[0020] S101: Determine the isolation degree of the user terminal, where the isolation degree is the difference between the signal strength of the current cell received by the user terminal and the maximum value of the signal strengths of all adjacent cells received by the user terminal;

[0021] S102: According to the comparison result between the isolation degree of the user terminal and the set threshold, determine to allocate the first part of frequency resources or the second part of frequency ...

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Abstract

The invention discloses a method and a device for allocating frequency resources in a fractional frequency reuse (FFR) system. The method comprises the following steps of: determining the isolation of a user terminal, wherein the isolation is difference between the signal intensity of this cell received by the user terminal and the maximum signal intensity of all adjacent cells received by the user terminal; determining to allocate the first part of frequency resources or the second part of frequency resources to the user terminal according to a comparison result between the isolation of the user terminal and the set threshold, wherein the reuse coefficient of the first part of frequency resources is greater than that of the second part of frequency resources; monitoring the change of the signal quality of the user terminal; and if the change amount exceeds the set change threshold, re-determining the isolation of the user terminal and allocating the frequency resources to the user terminal according to the isolation of the user terminal. As the isolation sufficiently reflects the interference of adjacent cells suffered by the terminal, the method can allocate the frequency resources more reasonably and efficiently to achieve the aim of interference coordination.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for allocating frequency resources in a partial frequency reuse system. Background technique [0002] In recent years, Orthogonal Frequency Division Multiplexing (OFDM) technology has become a mainstream technology of wireless communication physical layer technology due to its ability to effectively combat multipath interference and narrowband interference and high spectrum efficiency. Worldwide Interoperability for Microwave Access (WiMAX), the WiMAX 802.16e standard and the 802.16m standard under development, which adopt OFDM technology as the core technology of the physical layer and take into account the characteristics of mobility and broadband, are the next-generation mobile communication standards strong competitor. In the WiMAX wireless broadband network, OFDM technology will make the wireless resources have a time-frequency two-dimensional str...

Claims

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Application Information

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IPC IPC(8): H04W16/10H04W24/00H04W72/12
Inventor 谷成金唐枫
Owner ZTE CORP
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