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A Relay-based MAC Protocol for Multi-Rate and Multi-Range Infrastructure Wireless LANs

A Relay-based MAC Protocol for Multi-Rate and Multi-Range Infrastructure Wireless LANs

A Relay-based MAC Protocol for Multi-Rate and Multi-Range Infrastructure Wireless LANs. Dept. of computer Science and Information Management Providence University Taichung, Taiwan 433, R.O.C. ??? ?????. Outline. Introduction Relay-based Adaptive Auto Rate Control protocol (RAAR)

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507 views • 38 slides
Sensor MAC Design

Sensor MAC Design

Sensor MAC Design. Requirements: Energy efficiency Simple operations Working with a large number of sensors Fair share of the channel among competing sensor nodes. Introduction to MAC. The role of medium access control (MAC)

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443 views • 36 slides
MAC Layer Design for Wireless Sensor Networks

MAC Layer Design for Wireless Sensor Networks

MAC Layer Design for Wireless Sensor Networks. Wei Ye USC Information Sciences Institute. Introduction. Wireless sensor network Large number of densely distributed nodes Battery powered Multi-hop ad hoc wireless network Node positions and topology dynamically change Self-organization

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348 views • 31 slides
An Energy-efficient MAC protocol for Wireless Sensor Networks

An Energy-efficient MAC protocol for Wireless Sensor Networks

An Energy-efficient MAC protocol for Wireless Sensor Networks. Wei Ye, John Heidemann, Deborah Estrin presented by Xiang Li. Outline. Introduction to WSN Design considerations Energy inefficiency Sources Existing MAC protocol design S-MAC Testbed and Implementation Result and Analysis

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629 views • 30 slides
An Anti-Collision Algorithm for Active RFID

An Anti-Collision Algorithm for Active RFID

An Anti-Collision Algorithm for Active RFID. ?? RFID ????????????????? RFID ????? RFID ???????????????????????????????????????????????????????? DCMA ????????????????? RFID ?????????????????????????? DCMA ???????????

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418 views • 26 slides
S-MAC Sensor Medium Access Control Protocol

S-MAC Sensor Medium Access Control Protocol

S-MAC Sensor Medium Access Control Protocol. An Energy Efficient MAC protocol for Wireless Sensor Networks. Outline. Introduction Design Considerations Main sources of energy inefficiency Current MAC design S-MAC Protocol implementation in a test-bed Discussion

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472 views • 25 slides
S-MAC Sensor Medium Access Control Protocol

S-MAC Sensor Medium Access Control Protocol

S-MAC Sensor Medium Access Control Protocol. An Energy Efficient MAC protocol for Wireless Sensor Networks. Outline. Introduction Design Considerations Main sources of energy inefficiency Current MAC design S-MAC Protocol implementation in a test-bed Discussion

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602 views • 25 slides
The Case for Heterogeneous Wireless MACs

The Case for Heterogeneous Wireless MACs

The Case for Heterogeneous Wireless MACs. Chun-cheng Chen Haiyun Luo Dept. of Computer Science, UIUC. C. A. B. CS. CS. CS. RSS. RSS. CS Thrshld. CS Thrshld. Problem#1: intra-BSS interference. Clear channel assessment (CCA): transmit iif RSS < CS threshold

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355 views • 23 slides
Cross-layer design for Multiple access techniques in wireless communications

Cross-layer design for Multiple access techniques in wireless communications

Cross-layer design for Multiple access techniques in wireless communications. Daniele Tarchi University of Florence, Italy E-mail: tarchi@lenst.det.unifi.it. Outline. Link Adaptation Adaptive Modulation and Coding VSF-CDMA TETRA Release 2 Ad-Hoc Networks. Link Adaptation.

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444 views • 20 slides
MAC layer Multicast in Wireless Multihop Networks

MAC layer Multicast in Wireless Multihop Networks

MAC layer Multicast in Wireless Multihop Networks. Shweta Jain Samir Das. Overview . Motivation. Introduction. Description if IEEE 802.11. Description of various Multicast MAC protocols. Description of Multicast MAC. Performance results. Conclusion. Motivation.

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385 views • 19 slides

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