Frequency selection method and device of physical resource block

A technology of physical resource block and resource allocation type, applied in the field of frequency selection method and device of physical resource block, can solve the problems of high complexity, decreased system throughput, decreased scheduling efficiency, etc., so as to reduce processing complexity and improve system Throughput, the effect of reducing the number of traversals and logical judgments

Active Publication Date: 2014-11-12
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0025] Since the minimum allocation granularity and selection criteria of the three allocation types are different, for types 1 and 2, if a single PRB is used as the step size to traverse, and the selection results of all resource allocation types are calculated sequentially, it will bring extremely high performance to the system. Complexity, reducing scheduling efficiency, and indirectly reducing system throughput

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  • Frequency selection method and device of physical resource block
  • Frequency selection method and device of physical resource block
  • Frequency selection method and device of physical resource block

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Embodiment Construction

[0041] It should be noted that the reporting granularity of the CQI is basically the same as that of allocation type 0. Therefore, the inventor found in the research process that the block selection method of allocation type 0 pairs of PRBs can be used for reference. The other two types are also converted to PRB group management, and the granularity is unified with type 0 to reduce the computational complexity.

[0042] In the embodiment of the present invention, the system bandwidth is divided into more than one PRB group according to the minimum granularity reported by the CQI, and in the process of traversing the PRB group once, according to the allocation based on PRB group management corresponding to each resource allocation type set resource selection based on the mode information, and obtain the currently available PRB group information under the corresponding resource allocation type; select the resource allocation type of the user terminal and the resource allocation ...

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Abstract

The invention discloses a frequency selection method and a device of a physical resource block (PRB) so as to reduce selection complexity and improve scheduling efficiency. The frequency selection method is to divide the system bandwidth into more than one PRB group according to the minimum particle degree reported according to channel quality indication (CQI). The frequency selection method includes in a one-time PRB group traversal process, performing resource selection according to allocation mode information based on PRB group management and corresponding to various resource allocation types so as to respectively obtain current available PRB group information in corresponding resource allocation types, and selecting the resource allocation types of a user terminal and PRB information used for reporting to the CQI in the resource allocation types from current available PRB groups in obtained various resource allocation types.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for frequency selection of physical resource blocks. Background technique [0002] In the Long Term Evolution (LTE) system, the number of physical resource blocks (PRBs) available for each downlink subframe is fixed, and its value is distinguished according to the bandwidth configuration. Taking 20M as an example, the total number of PRBs is 100 (due to the computational complexity It mainly exists when the system bandwidth is large and the number of PRBs is large, so 20M is used as an example below). [0003] There are three resource allocation types specified in the agreement: [0004] 1. Resource allocation type 0 (Resource allocation type 0) [0005] Resource allocation type 1 is referred to as type 0 for short. The eNB schedules resource block groups (RBGs) at the smallest granularity, and an RBG is a group of P consecutive physical reso...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04
Inventor 裘紫清
Owner DATANG MOBILE COMM EQUIP CO LTD
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