Method and apparatus for scheduling time frequency resource of OFDM system

Abstract

The invention discloses a method and a device for scheduling time-frequency resource of an orthogonal frequency-division multiplexing (OFDM) system. The method comprises the following steps: according to the number N of cells in the clusters of the OFDM system and the number S of sectors of each cell, a time-frequency resource is divided into N*S time-frequency resource block groups; during the allocation of the time-frequency resource, part or all of the N*S time-frequency resource block groups are allocated to the sectors of the cells according to the actual business of each sector, whereinthe time-frequency resource block groups allocated to the sectors are different, the time-frequency resource block groups allocated to the same sector are different, and the priority levels of the time-frequency resource block groups allocated to each sector are arranged from high to low according to an allocation sequence; and the base stations in each cell allocate the time-frequency blocks of the time-frequency resource block groups to services in need according to the high-to-low sequence of the priority levels of the time-frequency resource block groups allocated to the sectors of the cell.

Description

technical field The invention relates to the field of wireless communication, in particular to a method and device for scheduling time-frequency resources in an orthogonal frequency division multiplexing system. Background technique 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. Like other cellular communication systems, the OFDM system also needs to determine the frequency reuse mode and perform frequency planning during network planning, among which: Frequency reuse is rea...

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Problems solved by technology

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

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