中国邮电高校学报(英文) ›› 2017, Vol. 24 ›› Issue (3): 51-57.

• Networks • 上一篇    下一篇

QoS-oriented packet scheduling scheme for opportunistic networks

姚文斌1,陈茵1,宗鸣2,王东滨1   

  1. 1. 北京邮电大学
    2. 电子科技大学
  • 收稿日期:2016-11-24 修回日期:2017-03-30 出版日期:2017-06-30 发布日期:2017-06-30
  • 通讯作者: 陈茵 E-mail:chenyin0629@163.com
  • 基金资助:
    国家自然科学基金-广东联合基金重大项目;国家科技支撑计划;信息安全专项基金;北京市教育委员会共建项目专项;中央高校基本科研基金

QoS-oriented packet scheduling scheme for opportunistic networks

  • Received:2016-11-24 Revised:2017-03-30 Online:2017-06-30 Published:2017-06-30
  • Contact: Yin Chen E-mail:chenyin0629@163.com
  • Supported by:
    NSFC-Guangdong Joint Found;National Science & Technology Pillar Program;China Information Security Special Fund;Co-construction Program with the Beijing Municipal Commission of Education

摘要: The unique characteristics of opportunistic networks (ONs), such as intermittent connectivity and limited network resources, makes it difficult to support quality of service (QoS) provisioning, particularly to guarantee delivery ratio and delivery delay. In this paper, we propose a QoS-oriented packet scheduling scheme (QPSS) to make decisions for bundle transmissions to satisfy the needs for the delivery ratio and delivery delay constraints of bundles. Different from prior works, a novel bundle classification method based on the reliability and latency requirements is utilized to decide the traffic class of bundles. A scheduling algorithm of traffic class and bundle redundancy is used to maintain a forwarding and dropping priority queue and allocate network resources in QPSS. Simulation results indicate that our scheme not only achieves a higher overall delivery ratio but also obtains an approximate 14% increase in terms of the amount of eligible bundles.

关键词: opportunistic networks, packet scheduling, QoS, traffic class of bundles

Abstract: The unique characteristics of opportunistic networks (ONs), such as intermittent connectivity and limited network resources, makes it difficult to support quality of service (QoS) provisioning, particularly to guarantee delivery ratio and delivery delay. In this paper, we propose a QoS-oriented packet scheduling scheme (QPSS) to make decisions for bundle transmissions to satisfy the needs for the delivery ratio and delivery delay constraints of bundles. Different from prior works, a novel bundle classification method based on the reliability and latency requirements is utilized to decide the traffic class of bundles. A scheduling algorithm of traffic class and bundle redundancy is used to maintain a forwarding and dropping priority queue and allocate network resources in QPSS. Simulation results indicate that our scheme not only achieves a higher overall delivery ratio but also obtains an approximate 14% increase in terms of the amount of eligible bundles.

Key words: opportunistic networks, packet scheduling, QoS, traffic class of bundles