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Ch 4- Medium Access Control sub layer

  • Channel Allocation problem
  • Media Access Protocol – ALOHA
  • CSMA
  • CSMA/CD Protocols
  • Collision free protocols
  • Contention protocols
  • WDM access protocols, Wireless LAN protocols
  • Ethernet- types of Ethernet, IEEE 802.2
  • Bus-token ring,
  • DQDB, FDDI, Bridges

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Contention free protocol �A bit map protocol�resolve collision during the contention period

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Collision free protocols

Computer Networks

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Wireless LAN Protocols

(a) A and C are hidden terminals �when transmitting to B.

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Wireless LAN Protocols

(b) B and C are exposed terminals

when transmitting to A and D.

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Wireless LAN Protocols

The MACA Wireless Protocol

(a) A sending an RTS to B.

(b) B responding with a CTS to A.

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End of Part-3 (Ch-4 MAC layer)

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Thanks.

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