Handover schemes in satellite networks: state-of-the-art and future research directions

Abstract

Abstract-Low Earth Orbit (LEO) satellites will work as an important component in future data communication networks. LEO satellites provide low end-to-end delays and efficient frequency spectrum utilization, making it suitable for personal communication. However, due to high satellite speed, the ongoing communication using LEO constellations experiences frequent handover. In this paper, we provide an up-to-date comprehensive literature survey on proposed handover schemes for LEO satellite systems. We also present a detailed classification of handover schemes based on a common framework. We first classify the schemes into link layer and network layer handover schemes. Link layer handover schemes are further classified into three categories: (a) spotbeam handover schemes, (b) satellite handover schemes, and (c) ISL handover schemes. Spotbeam handover schemes are categorized based on channel capacity, handover guarantee, and handover prioritization techniques. Network layer handover schemes are also classified depending on connection transfer strategies. Finally, we compare the handover schemes using different Quality of Service.

A New Method for Controlling Mobility Management Cost of PatHO-LEO satellite and Mobile IP Network

“…Handoff latency is also affected of the system .there are some method of reducing the handoff latency of the system [7][8] [9].Handoff failure is one of the big issue during handover management.Some methods are discussed toovercome these in [11].These not has been discussed here.…”

Area based Mobility Management by using GPS in LEO satellite Networks

“…To provide such applications, scalable mobility management and IP communication between end nodes are required. Conventional IP mobility management protocols, typified by Mobile IP [5] and LIN6 (Location Independent Network architecture for IPv6) [7], require mobile nodes to send binding update requests to the Location Directory every time a handover occurs. Given the high-mobility of satellite networks, usage of these approaches will result in a large number of binding update requests and consequently affect the scalability of the mobility management schemes.…”

Seamless Handover in Software-Defined Satellite Networking

“…This is similar to the network-initiated and network-controlled hard handover in long-term evolution (LTE) systems [3], where the base stations make hard handover decisions in order to route data packets correctly. There have also been lots of academic research efforts studying resource management and handover schemes in satellite networks [4]- [6]. It has been shown that the centralized algorithm [4] and hybrid handover schemes [5] can improve the overall quality of service (QoS) during handover.…”

“…We then present a seamless handover protocol that is tailored to and takes advantage of the SDSN, with a meaningful level of detail for implementation. Performance of the proposed SDSN handover protocol (in terms of handover latency, throughput, and user quality of experience (QoE)) is tested on a physical layer simulator and compared with those of existing hard [6] and hybrid [5] handover schemes for satellite networks. We also analyze the relationship between the height of satellites, the location of users and the communication quality for the considered satellite handover mechanisms, and reveal the relationship between communication metrics and the QoE of users.…”

“…It has been shown that the centralized algorithm [4] and hybrid handover schemes [5] can improve the overall quality of service (QoS) during handover. Various handover mechanisms, including spotbeam handover, satellite handover and inter-satellite links handover are surveyed in [6].…”