南京邮电大学学报（自然科学版）2025，Vol.45Issue(3)：18-27,10.DOI:10.14132/j.cnki.1673-5439.2025.03.003
基于天通卫星的数字集群跨区域互联协议设计
Design of cross-regional interconnection protocol for digital trunk based on Tiantong satellite
摘要
Abstract
To solve the problem of cross-regional interconnection for local PDT networks,a solution based on the Tiantong-1 satellite system is proposed.This solution converts PDT and Tiantong trunk sig-naling into SIP signaling and exchanges it through a converged gateway.Thus the cross-regional communi-cation for PDT terminals is conducted without modifications to the user terminals.This reduces the need for terminal equipment modifications and facilitates rapid deployment.Two methods for cross-regional cluster interconnection are proposed:(1)the signaling direct mapping method:achieving cross-regional interconnection by directly converting signaling fields and forwarding them across networks via the gate-way;(2)the gateway fast feedback method:reducing cross-regional interconnection latency by preemp-tively responding to access requests and caching access data through the converged gateway.Theoretical analysis and simulations demonstrate that the gateway fast feedback method offers superior connection performance and call experience compared to the signaling direct mapping method.关键词
卫星通信系统/SIP协议/数字集群/异构通信/PDT/天通一号Key words
satellite communication systems/SIP protocol/digital cluster/heterogeneous communica-tion/PDT/Tiantong-1分类
电子信息工程引用本文复制引用
陈啸川,缪霏阳,丁良辉,李大鹏,杨峰..基于天通卫星的数字集群跨区域互联协议设计[J].南京邮电大学学报（自然科学版）,2025,45(3):18-27,10.基金项目
上海市重点实验室基金(STCSM15DZ2270400)和上海高校特聘教授(东方学者)岗位计划资助项目 （STCSM15DZ2270400）
