摘要
由于低轨(Low Earth Orbit,LEO)卫星网络具有卫星高速运动、切换频繁、通信时延长等特点,移动管理协议在LEO卫星网络中的性能表现不同于地面网络。分析比较主流移动IP管理协议在LEO卫星网络移动性管理中的性能,针对LEO卫星网络特点,首先建立LEO卫星网络模型,然后详细分析移动IPv6(Mobile IPv6,MIPv6)、快速移动IPv6(Fast Mobile IPv6,FMIPv6)、代理移动IPv6(Proxy Mobile IPv6,PMIPv6)、快速代理移动IPv6(Fast Proxy Mobile IPv6,FPMIPv6)的切换信令流程,并据此推导LEO卫星网络切换时延、丢包数、信令开销的解析表达式。最后,根据数值结果分析比较四种移动IP管理协议在LEO卫星网络中性能差异的影响因素,从而为未来LEO卫星网络移动管理协议的设计及性能优化提供依据。
The performance of mobile management protocols in LEO（Low Earth Orbit） satellite networks is different from that in terrestrial networks due to the features of LEO satellite networks such as high moving-speed,highly-frequent handovers and large communication latency.The performance of the mainstream mobile IP management protocol in mobility management of LEO satellite networks is analyzed and compared.In view of the characteristics of LEO satellite network,LEO satellite network model is firstly established,then the handover signaling processes of MIPv6（Mobile IPv6）,FMIPv6（Fast Mobile IPv6）,PMIPv6（Proxy Mobile IPv6） and FPMIPv6（Fast Proxy Mobile IPv6） are analyzed in detail,and based on this,the analytical expressions for handover delay,packet loss and signaling overhead of LEO satellite networks are derived.Finally,according to the numerical results,the factors causing different performances of four mobile IP management protocols in LEO satellite networks are compared and discussed,thus to provide the basis for the design and performance optimization of mobile management protocol for LEO satellite network in the future.
出处
《通信技术》
2017年第9期1957-1967,共11页
Communications Technology
关键词
LEO
MIP
移动管理
时延
丢包
信令开销
LEO
MIP
mobile management
handover latency
packet loss
signaling overhead
