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LTE fairness scheduling method based on time delay sensitivity

A scheduling method and delay-sensitive technology, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve problems such as not considering the impact of delay on business

Active Publication Date: 2016-08-17
CERTUS NETWORK TECHNANJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current scheduling methods, such as RR (Round Robin, round-robin scheduling), PF (Proportion Fair, proportional fairness) and SJF (Short Job First, shortest job first), etc., all simply emphasize system throughput or fairness, and do not Consider the impact of delay on business, or achieve a balance between the above indicators

Method used

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  • LTE fairness scheduling method based on time delay sensitivity
  • LTE fairness scheduling method based on time delay sensitivity
  • LTE fairness scheduling method based on time delay sensitivity

Examples

Experimental program
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Embodiment 1

[0026] The delay-sensitive LTE fairness scheduling method described in this example includes steps such as rate accounting, scheduling buffering, delay adjustment, service quality assurance, and scheduling execution.

[0027] Step 1: Rate calculation;

[0028] Step 1-1: Set the bandwidth B occupied by each RB resource RB , the number of RB resource blocks allocated to user i is NPRB i , calculate the bandwidth B used by each user i =NPRB i *B RB ;

[0029] Step 1-2: Set the signal-to-noise ratio SINR for each user i and business bit error rate BER i , calculate the current rate V of each user i =B i * log 2 (1+SINR i / (-ln(5BER i ) / 1.5);

[0030] Step 2: Scheduling buffer;

[0031] Set n as the number of times of the current scheduled TTI (Transmission Time Interval, transmission time interval), Calculate the scheduling priority of user i entering the buffer queue for the average transmission rate of user i before the nth TTI

[0032] Step 3: Delay adjustment...

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Abstract

The invention discloses an LTE fairness scheduling method based on time delay sensitivity. The method includes the steps of speed calculating, scheduling buffering, time delay adjusting, service quality ensuring and scheduling executing. According to the obtained LTE fairness scheduling method based on time delay sensitivity, by tracking time delay of current service and automatically adjusting the priority of the current service, users at low speed and high speed are screened out independently according the speed of the current service, channel resources can be distributed more positively for the users at low speed, proper punishment is conducted on the users at high speed, then the fairness is ensured among the users, and therefore the scheduling method keeps the service time delay sensitivity and considers the system throughput capacity and fairness at the same time, the service development service quality is improved, and customer perception is ensured.

Description

technical field [0001] The invention relates to a scheduling method of an LTE system, in particular to a delay-sensitive fairness scheduling method. Background technique [0002] Wireless resource packet scheduling is a key technology in LTE (Long Term Evolution) system design, and it is an important part to ensure the quality of service QoS (Quality of Service) of each user's multi-service, meet user fairness, and maintain system stability. How to provide quality assurance for various services in the harsh wireless propagation environment and when users interfere with each other, and at the same time make full use of precious wireless spectrum resources is a problem that the LTE system must seriously solve. Packet scheduling includes uplink scheduling and downlink scheduling. For different users, RB (Resource Block) resource allocation is performed according to various factors such as their current channel indication, service quality, and scheduling status, so as to ensure ...

Claims

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Application Information

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IPC IPC(8): H04W28/02H04W28/08
CPCH04W28/0231H04W28/0268H04W28/08
Inventor 李静李锋
Owner CERTUS NETWORK TECHNANJING
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