100 people are sitting in an airplane 20 in business class...

100 people are sitting in an airplane, 20 in business class, 80 in economy/coach class. You are asked to briefly sketch the design of a MAC protocol for Wireless LAN technology with a single Access Point in the plane that satisfies two requirements: The people in business class must have a higher priority to the medium than those in economy class. Within a class, the protocol must try to be fair and must maximize throughput. You must assume basic capabilities, e.g., only one frequency channel is available, no directional antennas, etc. You can base your answer on existing protocols like IEEE 802.11 or MACA or MACAW Protocols if required and just suggest what should be changed/implemented to achieve desired goals.

Transcript

00:01 Hello student, here is a brief sketch of a mac protocol for the wireless lane technology with a single access point in an aeroplane that satisfies the two requirements which are given to us.

00:11 The people in the business class must have a higher priority to the medium than those in the economy class.

00:18 Within a class, the protocol must try to be fair and must maximize throughput.

00:24 The protocol is based on ieee 802 .11 protocol but with the following changes.

00:31 Priority e station is assigned a priority based on its class.

00:36 Business class stations have a higher than economy class.

00:40 Number 2, fair within a class, stations are scheduled in a round -robin fashion.

00:45 So this ensures that all the stations have an equal opportunity to transmit.

00:50 So these are two changes.

00:53 Now protocol work as follows.

00:55 When the station has a data to transmit it, send a contention free periods request to the access point cfp.

01:03 Now second point is the access point grant cfp request to the station with the highest priority.

01:10 Number 3, the station transmit its data during the cfp.

01:14 Number 4, after the cfp, the access point grant the next cfp request to the station within the highest priority.

01:22 So this process continues until all the station have transmitted their data.

01:27 To maximize the throughput, the access point can use a technique called transmit power control tpc.

01:34 Tpc allow the access point to adjust the transmit power of each station to ensure all the station can communicate with the access point within the interference...

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