A Novel Access Protocol for Communication System in Near Space

The calling of users is very uneven and the channel collision detection ability is quite weak in communication system in near space (CSNS). To ensure quality of service (QoS), a novel load measurement access control (LMAC) protocol is proposed. Combined with Markov M/M/n queue model, integrated theoretical analytical model is established for CSNS. The effect which the waiting probability of calling service, calling number and measure parameter have on the performance of the networks are analyzed. Besides, the LMAC scheme is introduced to greatly increase the maximum throughput to 0.33 and improves the maximum throughput nearly one time compared to the maximum throughput 0.18 of the simple ALOHA protocol and closed to the theoretical bound.

[1]  A. Vilhar,et al.  Home Agent Placement Optimization for HAP-Based Network Mobility , 2005, 2005 2nd International Symposium on Wireless Communication Systems.

[2]  I. Islam,et al.  A Theoretical Analysis of combination of M/M/n and M/M/n/N for Mobile Cellular Network , 2006, 2006 2nd International Conference on Information & Communication Technologies.

[3]  T. Van Do,et al.  Providing telecommunications services for rural areas from the HAP (High Altitude Platform): a case study in the region of Hungary , 2006, Networks 2006. 12th International Telecommunications Network Strategy and Planning Symposium.

[4]  Iwao Sasase,et al.  The effect of message-class dependent threshold-type scheduling on the delay for the M/M/n queue , 1992, [Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications.

[5]  Fabio Dovis,et al.  Small-scale fading for high-altitude platform (HAP) propagation channels , 2002, IEEE J. Sel. Areas Commun..

[6]  David Grace,et al.  High-altitude platforms for wireless communications , 2001 .