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Paper-1: Effective Channel Exploitation in IEEE 802.16j Networks for Maritime Communications

Paper-1: Effective Channel Exploitation in IEEE 802.16j Networks for Maritime Communications. Authors: Hanwu WANG*, Weijia JIA *, Geyong MIN ** *City University of Hongkong **Bradford University presented by Ikhsan Putra Kurniawan. About Paper. This paper appeared in:. Content .

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Paper-1: Effective Channel Exploitation in IEEE 802.16j Networks for Maritime Communications

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  1. Paper-1: Effective Channel Exploitation in IEEE802.16jNetworks for Maritime Communications Authors: Hanwu WANG*, Weijia JIA*, Geyong MIN** *City University of Hongkong **Bradford University presented by IkhsanPutra Kurniawan 운영체제특론(Advanced Operating System) - Spring 2012

  2. About Paper This paper appeared in: 운영체제특론(Advanced Operating System) - Spring 2012

  3. 운영체제특론(Advanced Operating System) - Spring 2012

  4. Content • Communication in the sea. • The IEEE 802.16 Technology. • IEEE 802.16e. • IEEE 802.16j. • 802.16j Studies. • Current Research Works on Maritime Communications. • This Paper Proposes • The Rest of The Paper. 운영체제특론(Advanced Operating System) - Spring 2012

  5. Communication in the sea Currently high cost (usually via 3G). wire-line infrastructure is almost impossible. Appropriate(acceptable cost) wireless access technology is required. Future trend is to construct IEEE 802.16 communication networks over the maritime environment. 운영체제특론(Advanced Operating System) - Spring 2012

  6. 운영체제특론(Advanced Operating System) - Spring 2012

  7. The IEEE 802.16 Technology • Aims high transmission rate and wide coverage for wireless communications. • The relevant standards include IEEE • 802.16d (targets fixed wireless access). • 802.16e (to support the mobileapplications). • 802.16j • etc. 운영체제특론(Advanced Operating System) - Spring 2012

  8. IEEE 802.16e • Single hop communication (eg 802.16e) is often limited geographical size. • IEEE802.16e + low cost relay station(RS) increase range & enhance transmission capacity between base station(BS) and mobile station(MS). • RS-enabled multi-hop networks has been the focus of the recently established IEEE 802.16j standard working group. 운영체제특론(Advanced Operating System) - Spring 2012

  9. IEEE 802.16j • Based on 802.16e + mobile multi-hop relay (MMR) operation. • High transmission rate, wide coverage, mobility, and flexible deployment. • Promising alternative for maritime environment. • It has 3 types of stations BS, RS, MS (end user). • RSs (uplink:superordinate, downlink: subordinate). • Existing studies in IEEE 802.16j networks are mainly focus on the resource scheduling which is based on the land application scenarios. 운영체제특론(Advanced Operating System) - Spring 2012

  10. 802.16j Studies Fei[6] proposed a dynamic bandwidth allocation algorithm in the relay station to support the QoS requirements of different types of service. Mogre[7] designed a scheduling algorithm in 802.16j relay networks by considering the spatial reuse to achieve high bandwidth utilization and system throughput. Wang[8] proposed two efficientschemes to forward broadcast data in 802.16j relay networks. Ghosh[9] proposed a scheduling heuristic for prioritized traffic in OFDMA based 802.16j relay networks with regarding to both network link and demand conditions. [10] addressed the multicast recipients grouping problem and proposed a dynamic station selection scheme to maximize the number of multicast recipients. None of the existing 802.16j schemes can be applied into a maritime scenario where the channel state varies from time to time due to the natural movement of the ocean surface. 운영체제특론(Advanced Operating System) - Spring 2012

  11. Current Research Works onMaritime Communications Kong[11] proposed an aggregatedpath routing approach to enhance transmission efficiency over a multi-hop maritime network. [12] proposed a new routing protocol by piggybacking information on WiMAX MAC control messages to increase the routing availability between maritime stations. Zhou[13] employed the multi-frequencychannels to improve the network transmission performance with respect to a distributed adaptive resource allocation scheme. None of those existing proposals provided a theoretical analysis model for maritimechannel state specification and channel utilization. 운영체제특론(Advanced Operating System) - Spring 2012

  12. This Paper Proposes • A novel schemes to tackle with the maritime channel exploitation including channel state specification, channel transmission adaptation and optimized channel utilization over IEEE 802.16j based maritime networks. • In maritime networks the key challenge is how to provide an appropriate resource (i.e.,channel transmission bandwidth) for sea users to meet their desired application requirements. • We carry out the following three tasks for maritime channel exploitation: • 1) specification of the state of maritime communication channels; • 2) adaptation of maritime channel transmission rate; • 3) optimized utilization on maritime channel bandwidth. 운영체제특론(Advanced Operating System) - Spring 2012

  13. Different from the land scenarios, in a maritime environment the communication channel between two stations is affected by the movement of the sea surface. We construct an analytical model by jointly considering path loss, path shadowing and multipath fading to specify the state of communication channels. Based on the obtained channel state, we further develop a transmission adaptation scheme to maximize the maritime channel transmission capacity. we also propose an adaptive traffic schedule scheme to fully utilize maritime channel bandwidth. Simulation modelswhich emulate different sea surface conditions are configured to implement our proposed channel state specification and transmission adaptation schemes and traffic scheduling scheme as well. 운영체제특론(Advanced Operating System) - Spring 2012

  14. The Rest of The Paper • Section II • presents an analytical model to specify maritime channel state. • Section III • describes the adaptation scheme for maritimechannel transmission. • Section IV • proposes an adaptive traffic scheduling scheme to fully utilize the maritime channel capacity; • Section V • Experiment results. • Section VI • Conclusion. 운영체제특론(Advanced Operating System) - Spring 2012

  15. References • Material references: • http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=5961673 • http://dl.acm.org/citation.cfm?id=2014843 • http://www.ieee802.org/16/tgd/ • http://www.ieee802.org/16/tge • http://www.ieee802.org/16/relay/ • http://en.wikipedia.org/wiki/IEEE_802.16 • Image illustration references: • http://dels-old.nas.edu/oceans/images/weather_observations.jpg • http://www.merl.com/publications/TR2007-120/ • http://www.surfholidays.com/blog/August-2010/What-Causes-the-Perfect-Wave.aspx 운영체제특론(Advanced Operating System) - Spring 2012

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