Simulation Study Of High-speed Packet Radio Network (hsprn)

High Speed Packet Radio Network (HSPRN) is a data communication network which applies packet switching to the domain of broadcast radio. It employs advanced network communication protocols, dynamic topology structure, multi-hop forwarding technology and self-organization management, which make it widely used in the fields of military tactical communication as well as civil wireless communication. The research on it includes many items, such as network structure, channel multi-access mechanisms, routing protocols, etc.Based on computer simulation, the paper discusses system-level scheme design and simulation of HSPRN, and describes a complete simulation model of distributed direct-sequence, multi-hop high-speed packet radio networks. Through simulation, we validate the effectivity and feasibility of some important protocols and algorithms, including distributed routing protocol (used in single channel network and multi-channel network), multi-access protocol (RTS/CTS and RTS/CTS with spread spectrum), connection-oriented data transmission mode and so on. After collecting lots of simulation data, we can easily acquire the end-to-end delay of message or packet, network throughput and some other network performancesFirstly, the makeup and principles of PRN is briefly introduced. Then we analyze the related protocols and algorithms in simulation model in detail, with emphasis on routing protocols, channel multi-access mechanism and network interconnection. Here we creatively propose a routing protocol which can realize routing in multi-channel network, and a multi-access mechanism combined with spread spectrum. We also describe the whole structure of our simulation model and the functions of each module. Lastly, simulation results are presented, from which the whole set of protocols is tested and validated. These results are helpful to practical network design, management and optimization as well as person training.