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Downlink resource scheduling method for hybrid service in LTE (long term evolution) system

A resource scheduling and mixed service technology, applied in electrical components, wireless communication, etc., can solve problems such as not considering user service QoS requirements, not considering fairness system performance, and not being able to meet real-time service performance requirements well, so as to improve Quality of service, the effect of improving overall performance

Active Publication Date: 2015-05-20
ZHEJIANG UNIV OF TECH
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Problems solved by technology

The former type of algorithm does not consider the QoS requirements of user services, making it unable to meet the performance requirements of real-time services; while the latter type of algorithms meets the QoS requirements of real-time services, but does not consider the fairness between different services and different services. Applied to system performance in mixed scenarios

Method used

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  • Downlink resource scheduling method for hybrid service in LTE (long term evolution) system
  • Downlink resource scheduling method for hybrid service in LTE (long term evolution) system
  • Downlink resource scheduling method for hybrid service in LTE (long term evolution) system

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Embodiment Construction

[0044] The implementation of the present invention will be further described below in conjunction with the accompanying drawings. The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, not to constitute an improper limitation of the present invention.

[0045] Step 1. Calculate the effective signal-to-noise ratio SINR of the user on each resource block according to the signal received by the user i,j , and calculate the user's instantaneous transmission rate r at this moment according to Shannon's formula i,j , to calculate the instantaneous spectral factor

[0046] E i , j S = min ( r i ...

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Abstract

The invention discloses a downlink resource scheduling method for hybrid service in an LTE (long term evolution) system, i.e., an HSEF (hybrid service exponential factor) algorithm. The scheduling method comprises the following steps that at a base station side, according to information reported by a base station bottom layer, an effective signal to noise ratio SINRi, j of a user at each resource block is calculated, then, the instant transmission speed ri, j of the user at the moment is calculated according to a Shannon equation, and in addition, an instant spectrum factor Ei, j is calculated; a user average throughput capacity R<->i, j(n) is calculated according to the currently obtained instant transmission speed ri, j, and an average throughput capacity factor Ei, j is calculated; a service weight factor Wi, j is calculated according to the service type of each service and the corresponding GBR (guaranteed bit rate) requirements; finally, a user scheduling weight Omegai, j is calculated according to each of the obtained factors, and the system carries out resource scheduling according to the user scheduling weights. The downlink resource scheduling method has the advantages that the fairness among users is improved, and the performance of the bit rate service is ensured, so that the integral performance of the LTE system is improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to the technical field of downlink resource scheduling in an LTE (Long Term Evolution) system. Background technique [0002] In recent years, with the extensive access requirements of mixed multimedia services in the Internet and the rapid development of wireless communication technology, wireless cellular network technology and market have experienced explosive growth. The next-generation mobile communication system LTE's hybrid service downlink resource scheduling algorithm in multi-service scenarios can effectively improve real-time service performance and meet users' mixed service requirements in high-bandwidth and high-mobility scenarios, especially for guaranteed bit rate services in real-time services. need. [0003] The key to meeting the QoS requirements of real-time and non-real-time services such as data and video is that the wireless communication system ha...

Claims

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Application Information

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IPC IPC(8): H04W72/14
CPCH04W72/12
Inventor 吴哲夫金腾飞陈滨王中友
Owner ZHEJIANG UNIV OF TECH
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