LTE downlink resource scheduling method for minimizing compression loss

A technology of compression loss and resource scheduling, applied in electrical components, wireless communication, etc., can solve problems such as CQI drop, low CQI, and uneven resource allocation, and achieve the effects of reducing compression loss, improving compression efficiency, and high throughput

CN106900064AInactive Publication Date: 2017-06-27XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-06-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an LTE downlink resource scheduling method for minimizing compression loss. The problem that the resource block compression is unconsidered when performing resource scheduling in the prior art is mainly solved. The scheme is as follows: 1, numbering a user and expanding to be same as the resource block number; 2, initializing transition probability of an algorithm; 3, completing allocation process from all resource blocks to the user; 4, updating the current maximum throughput and the optimal allocation scheme; 5, performing the transition probability update on the algorithm based on the optimal allocation scheme; and 6, iterating the algorithm until achieving the maximum iteration time, and mapping the expanded user serial number back to an original user number, thereby obtaining the optimal allocation scheme. In the sub-band channel quality allocation, the user fairness is guaranteed, and the compression efficiency of the resource block is improved, the improvement of the throughput is maximally guaranteed, and the method can be used for the multiuser scheduling in a long term evolution system.
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Description

technical field

[0001] The invention belongs to the technical field of wireless communication, and in particular relates to an LTE downlink dynamic resource allocation method, which can be used for resource access requirements of multi-user scheduling in the long-term evolution system LTE. Background technique

[0002] For wireless communication, wireless resources, such as frequency spectrum and time slot, are very precious. How to improve spectrum utilization has become a technical issue that people are very concerned about. Many users compete for wireless resources, so that the allocation strategy needs to consider the fairness of users. While making each user can be scheduled fairly as much as possible, the throughput of the system must also be taken into consideration. The factors that determine the system throughput include: transmit power, time-frequency resources, channel quality, and resource allocation algorithm, and user fairness depends on the downlink schedulin...

Examples

Embodiment Construction

[0030] The embodiments and effects of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] Suppose the number of resource blocks in the system is N, the total number of users is M, and the rate obtained by each user in each scheduling cycle is R k k=1,2,...,M, assuming that the base station can obtain the channel state information CQI value of the user terminal through the feedback channel, and dynamically allocate resource blocks for each user according to the feedback value.

[0032] Define ρ k,n Indicates the occupancy of resource blocks, when ρ k,n =1, it means resource block n is occupied by user k, when ρ k,n =0 means that resource block n is not occupied by user k.

[0033] define c k,n Represents the number of bits allocated by user M on resource block n, defines T as the throughput of the system, and maximizes the total throughput T of the system through the dynamic allocation of resource blocks, ...