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Downlink Resource Scheduling Method for Mixed Services in LTE System

A mixed service and resource scheduling 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 Overall performance, the effect of improving service quality

Active Publication Date: 2018-03-06
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 Mixed Services in LTE System
  • Downlink Resource Scheduling Method for Mixed Services in LTE System
  • Downlink Resource Scheduling Method for Mixed Services in LTE 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]

[0047] Among them, r i,j = log 2 (1+SINRi,j ) represents the instantaneous transmission rate of the user at this moment, SINR i,j Indicates the effective signal-to-noise ratio of user i on reso...

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Abstract

The invention discloses a downlink resource scheduling method of a hybrid service in an LTE system, that is, a Hybrid Service Exponential Factor (HSEF, Hybrid Service Exponential Factor) algorithm. The scheduling method includes the following steps: on the base station side, calculate the effective signal-to-noise ratio SINRi,j of the user in each resource block according to the information reported by the bottom layer of the base station, and then calculate the instantaneous transmission rate ri,j of the user at this moment according to Shannon's formula j, and obtain the instantaneous spectrum factor. According to the currently obtained instantaneous transmission rate ri,j, calculate the average user throughput and obtain the average throughput factor. According to the business type of each service and the corresponding guaranteed bit rate (GBR, Guranteed Bit Rate) It is required to calculate the service weight factor Wi,j; finally, calculate the user scheduling weight ωi,j according to the above-mentioned factors, and the system performs resource scheduling according to the user's scheduling weight. The present invention improves the fairness among users and the performance of the guaranteed bit rate service, thereby improving the overall performance of the LTE system.

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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Patent Type & Authority Patents(China)
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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