1. 1 後卓越計畫進度報告 曾煜棋老師實驗室

2. 2 Problem Statement Event-driven Sensor Networks Exploiting the spatial correlation of sensor data Designing a specific MAC protocol

3. 3 Designing a MAC protocol Built on top of any CSMA-based protocol A CSMA-based MAC Protocol

4. 4 Designing a MAC protocol Two Modes ES Mode & NES Mode Issues Entering the ES Mode Slot Assignment Slot Size Synchronization Leaving the ES Mode

5. 5 Designing a MAC protocol Entering & Leaving the ES mode The first slot (i.e., slot 1) will be started on-the-fly in an event-driven manner Slot Assignment A node can use the same slot used by its one-hop neighbors But, it cannot use the same slot used by its two- hop neighbors

6. 6 Slot Size Synchronization Multiple Events & Event Propagation Delay Tight synchronization is not required Designing a MAC protocol