Packet scheduling method based on mixed services in LTE communication system

Abstract

The invention relates to the scheduling function of an LTE communication system, in particular to a packet scheduling method based on mixed services in the LTE communication system. The method comprises the steps that first, users are divided into GBR users and Non-GBR users according to services; the GBR users are divided into overload users and non-overload users; the scheduling mode of the overload users and the scheduling mode of the non-overload users are different; when the packet delay of HOL is bigger, the packet priority of the non-overload users is higher, and the priority of the overload users is lower; the Non-GBR users are divided into retransmission users and new-transmission users in order to guarantee the integrity of user data, and the priority of the retransmission users is higher than that of the new-transmission users; the scheduling mode of the retransmission users is the same as the scheduling mode of the new-transmission users; a classical APF algorithm is selected to conduct scheduling. The packet scheduling method can meet the different requirements for packet delay of different real-time services, the internal parameters can be adjusted in a self-adaptive mode, the QoS requirements of various real-time services are met, and the inspection to the user service integrity is embodied in the non-real time service scheduling process.

Description

technical field [0001] The present invention relates to a scheduling function of a Long Term Evolution (Long Term Evolution, LTE) communication system, in particular to a group scheduling of multiple services in the LTE communication system. Background technique [0002] As the main evolution direction of the mobile communication system, LTE technology has attracted more and more attention from major operators and equipment manufacturers in the world due to its characteristics of high speed and low delay. The main task of packet scheduling technology is to reasonably allocate wireless resources for packet services of wireless users. On the premise of ensuring user fairness, it can effectively improve mobile channel utilization and service Quality of Service (QoS). [0003] Scheduling algorithms are usually divided into two categories for real-time services and non-real-time services. Different types of packet services have different requirements for scheduling technologies. ...

AI Technical Summary

Problems solved by technology

[0004] Different services have different requirements on packet delay, and the classic real-time service scheduling method usually makes real-time scheduling for a specific service, which cannot be adjusted as the service type changes

Therefore, the scheduling under mixed traffic cannot be satisfied

However, the traditional non-real-time business scheduling method mainly considers throughput and fairness, and cannot reflect the impact of packet loss rate on user experience.

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