Resource distribution information representing method based on OFDM system

Abstract

The invention discloses a resource allocation information representation method which comprises the following steps: all the available subcarriers are divided into at least one resource block; all the available subcarriers are divided into at least one resource group, wherein, each resource group comprises at least one resource block; relevant information of the resource group which is allocated to a target user is represented by a bitmap representation method, and the allocation conditions of the resource block in the resource group are represented by the bitmap representation method or the combination of the number of the allocated continuous resource blocks and the starting positions of the allocated continuous resource blocks, or the resource allocation conditions of an orthogonal frequency division multiplexing system are represented by a high-granularity resource block bitmap representation method. By using the bitmap method of different granularities and the method for obtaining the combination representation of continuous RB quantity and the starting positions of the continuous RB in the group, the invention reduces the signaling overhead and simultaneously ensures a more flexible resource scheduling.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a method for expressing resource allocation information based on an orthogonal frequency division multiplexing system. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM for short) technology is one of the main candidate solutions for future wireless communication technologies. In the frequency domain, a given channel is divided into many orthogonal subcarriers, signals are modulated on each subcarrier, and each subcarrier is transmitted in parallel. In this way, although the frequency response curve of the wireless channel is non-flat and has frequency selectivity, each sub-carrier is relatively flat, and a narrow-band transmission is performed on each sub-carrier, and the signal bandwidth is smaller than the channel bandwidth, so the signal waveform can be greatly eliminated. Interference between. Since each sub-carrier is orthogon...

AI Technical Summary

Problems solved by technology

The biggest advantage of the bitmap-based signaling representation method is that it can support completely flexible resource scheduling, but this representation method needs to establish a corresponding bitmap for each user. Strong correlation, so the overhead waste is serious

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