A Proportional Fair Scheduling Method for LTE

A proportionally fair scheduling and power ratio technology, applied in the field of mobile communications, can solve the problems of inability to distinguish services of different levels of services and throughput factor weights, changes, etc., to ensure the service quality of services, improve performance, and overcome weight imbalance. Effect

Active Publication Date: 2017-07-28
WUHAN POST & TELECOMM RES INST CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0004] The present invention aims at the problems of the prior art and overcomes the defect that the classic PF algorithm cannot distinguish services of different levels of business and the weight of the throughput factor changes with the number of service users

Method used

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  • A Proportional Fair Scheduling Method for LTE
  • A Proportional Fair Scheduling Method for LTE
  • A Proportional Fair Scheduling Method for LTE

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0047] The concrete calculation of embodiment is as follows:

[0048] Non-GBR users:

[0049]

[0050] In the formula, e is a mathematical constant, T Non-GBR_noschedIndicates the non-GBR user data available in the RLC (Radio Link Control layer protocol) cache is not scheduled time statistics, that is, the scheduling delay. It is a self-adjusting factor, and during specific implementation, those skilled in the art can set it to adjust the weight of the scheduling delay in the scheduling algorithm according to the actual application scenario, so as to fine-tune the scheduling weight of the user. The PDB indicates the delay requirement related to the user. During specific implementation, this value can be configured differently according to the priority of each user, and at the same time, it plays a role in normalizing the scheduling delay.

[0051] GBR users:

[0052]

[0053] In the formula, e is a mathematical constant, and λ represents a self-adjusting factor to ad...

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Abstract

The invention provides an LTE proportional fair scheduling method. The method includes the steps that the total signal power ratio of a user service is obtained on a base station according to information reported by a bottom layer, and the instant spectrum efficiency of a user is calculated according to the Shannon equation; the QOS weight of the user is calculated according to the type of the service; the throughput capacity weight of the user is calculated according to the average throughput capacity; the scheduling weight of the user is finally obtained; scheduling is conducted according to the scheduling weight of the user. According to the method, factors such as the scheduling delay, the requirement for the service quality of the service and the system user capacity scale are taken into comprehensive consideration, all the factors are unified in the aspect of magnitude, and the scheduling weight is equalized. By means of the method, the scheduling efficiency of an LTE system can be improved, and service quality of the user service can be ensured.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to an LTE proportional fair scheduling method. Background technique [0002] LTE (Long Term Evolution, Long Term Evolution) is an evolution technology of 3G system, and adopts key technologies such as MIMO (Multiple Input Multiple Output) and OFDM (Orthogonal Frequency Division Multiplexing) to significantly improve system performance. How to efficiently and rationally allocate and use the limited wireless resources of the LTE system to meet the increasing needs of users, and ensure the service quality of user services, the coverage area of ​​the system planning, and improve the system capacity, this is the scheduling method in the LTE system to be solved question. [0003] Scheduling methods should consider two aspects: the complexity of method implementation and the impact on system performance indicators, such as fairness, delay, and business quality of service (QOS...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12
CPCY02D30/70
Inventor 冯伟江世宇黄念陈磊赵凯南袁伟
Owner WUHAN POST & TELECOMM RES INST CO LTD
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