Distributed resource mapping method

A technology of distributed resource and mapping method, which is applied in the direction of space transmit diversity, diversity/multi-antenna system, orthogonal multiplexing system, etc., can solve the defects of diversity gain and adjacent cell interference, the scheme allocation method is not flexible enough, Resource scheduling strategy is limited and other issues, to achieve good time-frequency diversity gain, low complexity, and reduce the effect of adjacent cell interference

Active Publication Date: 2008-01-09
ZTE CORP
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Problems solved by technology

[0006] The existing scheme allocation method is not flexible enough, which will limit the resource scheduling strategy, and there are defects in diversity gain and neighbor cell interference
[0007] However, so far, no scheme has been proposed that can support more flexible resource allocation with lower signaling overhead, obtain greater frequency diversity, and at the same time reduce adjacent cell interference

Method used

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Embodiment Construction

[0024] In this embodiment, a distributed resource mapping method is provided.

[0025] As shown in FIG. 1, the distributed resource mapping method according to this embodiment includes: step S102, setting the logical number of the PRB for each PRB in each subframe within the system bandwidth, wherein the logical number i represents the ith PRB, And, 1≤i≤N_PRB, where N_PRB represents the total number of PRBs; the logical number of DVRB is set for each DVRB, and the numbering method is the same as the numbering method of PRB, wherein the logical number j represents the jth VRB, and, 1 ≤i≤N_VRB, N_DVRB indicates the total number of DVRB; and, the logical number of PRB corresponds to the logical number of VRB;

[0026] Step S104, extract all or part of the PRB as DPRB, and divide each DPRB into multiple data units (Data Unit, DU), wherein each data unit contains the same number of OFDM symbols and subcarriers, and belongs to the same DU in the same The subcarriers of the physical...

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Abstract

The invention is concerned with the mapping method of the distributing source, includes: Setup the logic number for the sub frame physics source piece of the system band width and each the distributing dummy source piece separately; Distilling all or part of the physics source piece to use as the distributing physics source piece with several data unit and reordering the data unit; the reordered data unit can be used as the distributing dummy source piece opposite the logic number of the distributing dummy source piece.

Description

technical field [0001] The present invention relates to the communication field, and in particular, to a distributed resource mapping method based on a frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) system. Background technique [0002] At present, OFDM technology is developing rapidly. With many advantages, this technology has been called one of the main candidates for future wireless communication technology. [0003] OFDM technology divides a given channel into many orthogonal subcarriers in the frequency domain, modulates signals on each subcarrier separately, and transmits each subcarrier in parallel. In this way, although the frequency response curve of the wireless channel is non-flat and has frequency selectivity, the frequency response within each subcarrier is narrowband transmission on each subcarrier, and the signal bandwidth is smaller than the channel bandwidth, so the signal waveform can be greatly eliminated. Interference ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L27/26H04J11/00
Inventor 戴博田刚薛妍郝鹏
Owner ZTE CORP
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