A model on the differentiated service with packet scheduling in multi-hop wireless networks

作者：Dong Zanqiang; Shen Subin^*

来源：Journal of Computational Information Systems, 2012, 8(1): 397-404.

• Data packet
• Data transmission delay
• Differentiated service models
• Differentiated Services
• Dynamic bandwidth
• Local networks
• Multihop wireless network
• Multimedia data
• Network data
• Packet scheduling
• QoS demands
• Queue scheduling
• Round-robin scheduling
• Service guarantees
• Service priority
• Theoretic analysis
• Ubiquitous networking
• Window Size
• Wired networks

For the purpose of ubiquitous networking, the multi-hop wireless networks have become a vital extension to wired networks. It is an important issue on how to provide the differentiated service for multimedia data which has widespread applications in the multi-hop wireless networks and strict QoS demands. Nowadays, most researches on differentiated service in wireless networks concentrate on the adjustment of contending window size without considering the difference on the communication state in each local network node. Some differentiated service mechanisms risk the excessive resource allocation and complicated signaling exchange procedure. For these cases, this paper proposes a differentiated service model MDSPH applied in multi-hop wireless networks, which takes the end-to-end data transmission delay as the analyzed object. Based on the data packet hierarchy queue scheduling and the dynamic bandwidth resource allocation in multi-queue scheduling, the data transmission delay and rate for the high service priority data are guaranteed in multi-hop wireless networks to the utmost extent. Meanwhile, the service opportunity for the low service priority data is also obtained in terms of round-robin scheduling rule and this ensures fairness in providing service guarantee for different network data. Theoretic analysis and simulation test show the validity of the model.

• 出版日期2012
• 单位南京邮电大学