A new data link layer protocol for satellite IP networks

Abstract

This paper analyze the development trend of the satellite communications, describe the existing data link layer protocol of the Satellite Networks network and conclude the characteristics and impact of the sate llite network, then a new satellite ne twork data link layer protocol (NSLP) has been proposed. The comparison shows that the new protocol can effectively reduce the link layer header overhead and improve the efficiency of information transmission. In practical applications, the new protocol can simplify the data link layer functions, have a better compatibility with the TCPIIP protocol and higher IP protocol coupling degree, save resources on star and many other advantages. The new protocol has a benefit to effectively enhance the overall performance of the satel lite IP networks.Keyword�satellite IP networks; data link layer proto col; NSLP 1. IN TR O DUCTIONThe satellite network has the unique characteristics of wider coverage and broadcasting ca pabilities, simplicity access, which supports broadband applications and services in rural and remote areas. Satellite networks are independent for distance, which enables them to be cost-effective for global coverage for point-to-multipoint broadcasting services. Satellite networks are suitable for providing multimedia applications and Internet services for both fixed and mobile users, which has become an exploration and important supplement part of the terrestrial communication network. Due to the long time delay, the high data error, the low bandwidth

Small satellites and CubeSats: Survey of structures, architectures, and protocols

“…Due to their additional hardware and link budget constraints, small satellites have to employ lightweight protocols in order to keep the resource consumption as low as possible and better exploit limited available bandwidth. There are several papers in the literature that define ad hoc protocols for small satellites; some of them developed within each mission, others with a more general purpose: Data link layer protocols: New satellite data link protocol (NSLP): Simple data link layer protocol suitable for small satellite IP networks. Its header size is small, and its functionalities limited to data frame encapsulation, transmission, and error detection performed by using a 2 byte CRC field. –Low‐altitude multiple satellite data link control (LAMS‐DLC): Data link protocol that attempts to integrate the advantages of ARQ protocols with those of FEC schemes.…”

“…Data link layer protocols: New satellite data link protocol (NSLP): Simple data link layer protocol suitable for small satellite IP networks. Its header size is small, and its functionalities limited to data frame encapsulation, transmission, and error detection performed by using a 2 byte CRC field. –Low‐altitude multiple satellite data link control (LAMS‐DLC): Data link protocol that attempts to integrate the advantages of ARQ protocols with those of FEC schemes.…”

“…New satellite data link protocol (NSLP): Simple data link layer protocol suitable for small satellite IP networks. Its header size is small, and its functionalities limited to data frame encapsulation, transmission, and error detection performed by using a 2 byte CRC field.…”