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| Content Provider | IET Digital Library |
|---|---|
| Author | Zhang, Xiaoling Liang, Wei Yu, Haibin Feng, Xisheng |
| Abstract | The shared-medium nature and complex wireless environment of wireless sensor networks (WSNs) poses fundamental challenges to the design of effective transmission scheduling algorithms that are optimised with respect to superframe length and reliability. In this study, the authors propose an adaptive and reliable transmission scheduling algorithm for WSNs based on low-cost estimation of channel states. The authors establish a hierarchical scheduling framework on global centralised timeslot scheduling and local distributed channel scheduling. On the one hand, global centralised timeslot scheduling aims to guarantee global optimality of resource allocation, during which a mathematical reliability model is built to avoid resource waste by the stationary allocation method and improve the reliability of packet transmission. On the other hand, local distributed channel scheduling shares the responsibility of resource allocation. During channel scheduling, the channel model is constructed by the dynamic programming method and takes both probing cost and channel quality into consideration, which alleviates the uncertain and time-varying interference and overcomes the blindness of traditional methods. In contrast with previous works that do not consider link reliability and channel probing cost and often assume two channel states, the scheduling algorithm performs reliably for an arbitrary number of channels and arbitrary number of channel states. Extensive simulations and experiments under a variety of network environments have been conducted to validate our theoretical claims. |
| Starting Page | 71 |
| Ending Page | 81 |
| Page Count | 11 |
| ISSN | 17518628 |
| Volume Number | 7 |
| e-ISSN | 17518636 |
| Issue Number | Issue 1, Jan (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/7/1 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2010.1008 |
| Journal | IET Communications |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Channel Allocation Channel Estimation Channel Probing Cost Communication Channel Equalisation And Identification Complex Wireless Environment Dynamic Programming Dynamic Programming Method Electromagnetic Compatibility Global Centralised Timeslot Scheduling Interference Link Reliability Local Distributed Channel Scheduling Low-cost Channel Estimation Mathematical Analysis Mathematical Reliability Model Multichannel Wireless Sensor Network Optimisation Technique Packet Transmission Reliability Radio Frequency Interference Reliability Reliable Transmission Scheduling Algorithm Resource Allocation Resource Waste Avoidance Scheduling Shared-medium Nature Wireless Environment Stationary Allocation Method Telecommunication Network Reliability Time-varying Channel Time-varying Interference Wireless Channel Wireless Sensor Network WSN |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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