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Stepwise dynamic subcarrier distribution method of LTE uplink

A carrier allocation, step-by-step technology, applied in the field of mobile communication technology resource allocation, can solve the problems of high algorithm complexity and insufficiency, and achieve the effect of reducing computational complexity and improving performance.

Active Publication Date: 2016-05-25
HARBIN ENG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method cannot meet the requirements of systems with high spectral efficiency, and the algorithm complexity is high

Method used

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  • Stepwise dynamic subcarrier distribution method of LTE uplink
  • Stepwise dynamic subcarrier distribution method of LTE uplink
  • Stepwise dynamic subcarrier distribution method of LTE uplink

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Experimental program
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Embodiment Construction

[0027] Such as figure 1 As shown, the LTE uplink step-by-step subcarrier allocation method of the present invention includes the following steps:

[0028] Step 1: Initialization. There are K users, L subcarriers and N resource blocks, and each resource block has the same number of subcarriers. Create user group set I group ={1,2,...,G}, user set I user ={1,2,...,K} and resource chunk set I chunk ={1,2,...,N}. The users are evenly assigned to each user set in sequence, and the number of users included in each user group is S=K / G.

[0029] Step 2: Calculate the user group average SNR for each user combination The minimum mean square error method is used to reduce the inter-symbol interference, so the signal-to-noise ratio of user k transmission γ k for:

[0030] γ k ( P k , I c h , ...

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Abstract

The invention relates to a stepwise dynamic subcarrier distribution method of an LTE uplink. The method comprises the following steps that 1) initialization is carried out, and a to-be-distributed resource block set, a user set and a user group set are established; 2) the average signal to noise ratio of each user group when the resource blocks are distributed are calculated; 3) the resource blocks are distributed to the user groups in the manner that aims at improving the distribution fairness; and 4) the resource block distributed to each user group is further distributed to users in the group in the manner that aims at improving the throughput of the system.

Description

technical field [0001] The invention relates to the field of mobile communication technology resource allocation, in particular to an LTE uplink dynamic subcarrier allocation method. Background technique [0002] At present, LTE is the most important 4G technology, and research on its spectrum resource allocation method has become an important subject. How to efficiently manage and utilize spectrum resources to achieve user service needs and improve the overall effectiveness and reliability of the system has become an important indicator to measure whether a modern wireless communication system can be commercialized. It is known that the uplink of the LTE system adopts the SC-FDMA multiple access technology, and its multi-carrier transmission structure and characteristics fully guarantee the feasibility of spectrum resource scheduling. Spectrum resources of LTE are allocated in the form of sub-carriers, a certain number of sub-carriers constitute a resource block, and a blo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04L5/00
CPCH04L5/001H04W72/0453
Inventor 叶方顿辉王秋滢李一兵
Owner HARBIN ENG UNIV