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Method for indicating downlink resource allocation

A resource allocation and indication technology, applied in the field of communication, can solve problems such as limited flexibility, can not cover completely decentralized and centralized allocation, and achieve the effect of reducing signaling overhead

Inactive Publication Date: 2009-09-09
闫中平
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] Although this resource allocation indication method can indicate fully decentralized and centralized RB allocation to a certain extent within RB Subsets, its flexibility is very limited and cannot cover all fully decentralized and centralized allocations

Method used

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  • Method for indicating downlink resource allocation
  • Method for indicating downlink resource allocation
  • Method for indicating downlink resource allocation

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Embodiment Construction

[0026] The technical solution of the present invention will be described in more detail below in conjunction with the drawings and embodiments.

[0027] The downlink resource allocation indication method provided by the present invention includes: after the network side allocates downlink resources for the user side in a centralized, fully distributed or partially distributed manner according to the needs of the user side, the tree structure, permutation and combination are adopted accordingly. The mode of the resource block subset indicates the downlink resource allocation mode. The specific steps indicated are as figure 2 As shown below:

[0028] a. The network side calculates the number of bits required to indicate the centralized, fully distributed, and partially distributed resource allocation methods according to the system bandwidth. B 1 , B 2 , B 3 , And denote the largest number of bits above as B max ;

[0029] b. Each of the downlink resource allocation methods contains...

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Abstract

The invention provides a method for indicating downlink resource allocation. The method comprises that: after a network side allocates a downlink resource for a user side according to the requirement of the user side by centralization, full decentralization or partial decentralization, the allocation mode of the downlink resource is indicated by a tree structure, a permutation and combination mode or a resource block subset mode correspondingly. By the method, all situations of RB allocation in the full decentralization mode and centralization mode can be indicated, meanwhile, most situations of the RB allocation in the partial decentralization mode can be indicated. Furthermore, when bandwidths in an LTE (long term evolution) system and an IMT-Advanced (advanced international mobile telecommunication) system are larger, under a condition of not reducing the dispatch flexibility, signaling cost of resource allocation can be reduced to a certain extent.

Description

Technical field [0001] The present invention relates to communication technology, and in particular to a method for indicating downlink resource allocation. Background technique [0002] The downlink system divides frequency resources into several physical resource blocks (PRBs). The PRB is the smallest allocation unit of downlink resources, and the size is 12 subcarriers. Downlink user data is sent in the form of a virtual resource block (VRB), and the VRB can be mapped onto the PRB in a centralized (Localized) or distributed (Distributed) manner. The localized mode occupies several adjacent PRBs. In this mode, the system can obtain multi-user gain through frequency domain scheduling; the distributed mode occupies several distributed PRBs, which are divided into fully distributed and partially distributed modes. The system can obtain frequency diversity gain by performing mapping in a way. [0003] The characteristics of the above three resource allocation methods are detailed b...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04B7/26
Inventor 袁明
Owner 闫中平
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