1 / 30

Chapter 5

Chapter 5. The Medium Access Sublayer. Chapter 5 The Medium Access Layer. 5.1 The Channel Allocation problem - Static and dynamic channel allocation in LANs & MANs 5.2 Multiple Access Protocols

lida
Download Presentation

Chapter 5

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 5 The Medium Access Sublayer

  2. Chapter 5 The Medium Access Layer • 5.1 The Channel Allocation problem - Static and dynamic channel allocation in LANs & MANs • 5.2 Multiple Access Protocols - ALOHA, CSMA, CSMA/CD, Collision-free protocols, Limited-contention protocols, Wireless LAN protocols • 5.3 Ethernet - Cabling, MAC sublayer protocol, Backoff algorithm, Performance, Gigabit Ethernet, 802.2 Logical Link Control • 5.4Wireless LANs - 802.11 protocol stack, physical layer, MAC sublayer protocol, frame structure

  3. 5.5 Broadband Wireless - Comparison of 802.11 with 802.16, protocol stack, frame structure • 5.6 Bluetooth - Bluetooth architecture, Application, Protocol stack, Frame structure • 5.7 Data Link Layer Switching - Bridges from 802.x to 802.y, Local internetworking, Spanning tree bridges, Remote bridges

  4. 5.1 The Channel Allocation problem 5.1.1 Static channel Allocation in LANs and WANs Frequency Division Multiplexing (FDM)

  5. 5.1.2 Dynamic Channel Allocation in LANs and WANs Assumptions • Station Model. The model consists of N independent stations, each generates the frame with probability in an interval . Once a frame is generated, the station is blocked. • Single Channel Assumption. A single channel is available for all communication. • Collision Assumption. If two frames are transmitted simultaneously, they are destroyed and must be retransmitted again later. There are no other errors.

  6. 4a. Continuous Time. Frame transmission can begin at any instant. 4b. Slotted Time. Time is divided into slots. Frame transmission always begin at the start of a slot. 5a. Carrier Sense. Stations can tell if the channel is in use before trying to use it. 5b. No Carrier Sense. Stations cannot sense the channel before trying to use it.

  7. 5.2 Multiple Access Protocols 5.2.1 ALOHA 5-1.

  8. 5-2.

  9. 5-3.

  10. 5.2.2 Carrier Sense Multiple Access Protocols

  11. 5-4.

  12. 5-5.

More Related