Using the mechanism of the active queue and passive queue, a GCA(grouping communication algorithm) in single computer cluster and a GCAD(grouping communication algorithm in double computer clusters) were studied.
For the need of large scale parallel computing based on Data Grid that is composed of the multi- clusters, the single clus- ter grouping communication model for multi- level grouping communication has been researched.
Firstly,the thesis introduces the technology foundation of the IP phone from packet communication technology,speech signal processing technology, the basic construction of and the principle of IP phone. Secondly,the ARP protocol,IP protocol,ICMP protocol and UDP protocol of UDP/IP protocols,about the whole core technologies of IP phone terminal, are done extensive but in-depth analysis.
In April of 2003, IPCC produced packet communications reference architecture V2.0, it's the update of V1.0 in June of 2001 and its purpose is to bring a consistent terminology to the next generation packet voice networks.
In this paper, the author will introduce the main content of IPCC's packet communications reference architecture and analyze it with the status in quo of international NGN devices and domestic NGN standards.
The use of adaptive-transmission protocols in wireless, store-and-forward, packet communication networks may result in large differences in the energy requirements of the alternative paths that are available to the routing protocol.
We introduce an all-optical WDM packet communication network that performs wavelength bypassing at the routers.
We study the delay performance of all-optical packet communication networks configured as ring and bus topologies employing cross-connect switches (or wavelength routers).
A PDP context activates a packet communication session with the SGSN.
Also refers to a Trimble-specified interface protocol for digital packet communication to/from the GPS receiver.
Optimizing the transmission parameters-packet length and sliding window simultaneously to maximize the transmission efficiency of satellite link, when data transfer via satellite link by packet form basing on HDLC protocol, is discussed in this paper.A mathematical model is suggested and the general conclusions are derived. Finally, the Packet Satellite Communication Processor and the experimental results are reported.
SAMA is a new concept to spread spectrum packet radio network and random multiaccess.Seeing that variance of packet length is important to performance of packet network,both analysis and simulation schemes for selection of optimal packet length in SAMA system are presented in this paper based on performance analysis of SAMA.Schemes are generalized for common DS/SSMA packet network easily.
In this paper, the author summarizes the data communication technology in communication based train control, which includes BALISE, LOOPS, LEAKY CABLE, GSM-R, GPRS, SSMA, and gives a detailed introduction to FFB's function allocation and the special request in FFB.