ABSTRACT
Contents 20.1 Introduction ................................................................................................................... 499 20.2 Background .....................................................................................................................501 20.3 Multichannel MAC Protocol: Schedule-Based Approach ............................................... 502
20.3.1 Network Model and Assumption ........................................................................ 502 20.3.2 Problem Statement .............................................................................................. 502 20.3.3 Description of Protocol ....................................................................................... 502
20.3.3.1 Cycle Structure ..................................................................................... 503 20.3.3.2 Scheduling Transmission ...................................................................... 504 20.3.3.3 Scheduling Example ............................................................................. 506
20.4 Simulated Performance .................................................................................................. 508 20.5 Future Research Directions ............................................................................................ 510 20.6 Conclusions .................................................................................................................... 511 References ............................................................................................................................... 511
atomic computing particles, which can be deployed to geographical locations for capturing and processing the data of their surroundings. e expected achievement of such sensor networks is to produce, over an extended period of time, global information from local data sensed by individual sensors. Harmonizing sensor nodes into a sophisticated computation and communication infrastructure, called a WSN, may have a strong impact on a wide variety of sensitive applications [1-4], such as military, scientific, industrial, health, and home networks. However, because of the half-duplex property of the sensor radio and the broadcast nature of the wireless medium, limited bandwidth remains a pressing issue for WSNs. e bandwidth problem is more serious for multihop WSNs because of interference between successive hops on the same path as well as that between neighboring paths. As a result, conventional single channel MACs cannot adequately support the bandwidth requirements.
