面向DMR应急通信系统的时间确定性服务网络

doi:10.11896/jsjkx.250400072

Abstract

Abstract: In traditional DMR networks,connections are made via Ethernet.When facing a high volume of burst traffic,long queues often occur,leading to high latency.This can easily result in a high rate of retransmissions and packet loss.Implementing flow control for IP network end systems to reduce traffic flow conflicts at switching nodes,and thereby avoid long queues,may be an effective solution.Based on this,this paper explores key issues related to the integration of DMR emergency communication networks with deterministic networks under IP interconnection.It proposes a traffic forwarding and scheduling method for DMR emergency communication networks,and designs a deterministic forwarding unit.This unit utilizes a scheduling table to ensure staggered transmission and relay of traffic flows,allowing for controlled traffic flow transmission according to scheduling rules.Tests performed with DMR equipment demonstrate that the method increases jitter stability by 19.80%.

Key words: DMR, Deterministic networking, Emergency communication, Flow control

CLC Number:

TP393

WANG Ruijia, WANG Wenkai, LUO Haoxiang, REN Xingliang, DING Lei, ZHANG Dongpo. Time-deterministic Service Network for DMR Emergency Communication Systems[J].Computer Science, 2026, 53(6A): 250400072-7.

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