Advanced Transport Protocols for Space Communications

Wireless;Satellite;Deep space;Interplanetary internet;Transport protocol;Multicast;Multimedia

Fang, Jian ; Electrical and Computer Engineering

University:Georgia Institute of Technology

Department:Electrical and Computer Engineering

关键词: Wireless;    Satellite;    Deep space;    Interplanetary internet;    Transport protocol;    Multicast;    Multimedia;   

Others  :  https://smartech.gatech.edu/bitstream/1853/4959/1/fang_jian_200412_phd.pdf

美国|英语

来源: SMARTech Repository

【 摘 要 】

Satellite IP networks are characterized by high bit error rates, long propagation delays, low bandwidth feedback links, and persistent fadesresulting from varying weather patterns. A new unicast transport protocol is designed to address all the above challenges. Two new algorithms, JumpStart and Quick Recovery, are presented to replace the traditional Slow Start algorithm and to recover rapidly from multiple segment losses within one window of data. The characteristics of satellite IP networks also distinguish satellite multicasting from multicasting in terrestrialwirelined networks. A reliable data multicast transport protocol, TCP-Peachtree, is proposed to solve the acknowledgment implosion and scalability problems in satellite IP networks. Developments in space technology are enabling the realization of deep space missions. The scientific data from these missions need to be delivered to the Earthsuccessfully. To achieve this goal, the InterPlaNetary Internet is proposed as the Internet of the deep space planetary networks, which is characterized by extremely high propagation delays, high link errors, asymmetrical bandwidth, and blackouts. A reliable transport protocol, TP-Planet, is proposed for data traffic in the InterPlaNetary Internet. TP-Planet deploys rate-based additive-increase multiplicative-decrease (AIMD) congestion control and replaces the inefficient slow start algorithm with a novel Initial State algorithm that allows the capture of link resources in a very fast and controlled manner. A new congestion detection and control mechanism is developed and a Blackout State is incorporated into the protocol operation. Multimedia traffic is also one part of the aggregate traffic over InterPlaNetary Internet backbone links and it has additional requirements such as minimum bandwidth, smooth traffic, and error control.To address all the above challenges, RCP-Planet is proposed. RCP-Planet consists of two novel algorithms, i.e., Begin State and Operational State. The protocol is based on a novel rate probing mechanism and a new rate control scheme to update the media rate smoothly based on the observed rate for the probing sequence.