3. Consider four nodes, A, B, C, and D that use the slotted ALOHA protocol to...
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3. Consider four nodes, A, B, C, and D that use the slotted ALOHA protocol to contend for a channel. Assume that each of nodes A, B, and C attempts to transmit in each slot with probability p, and assume that node D attempts to transmit in each slot with probability 2p. That is, each node always has a frame to send, and the node transmits with the given probability for a fresh frame as well as for a frame that has already suffered a collision. (a) What is the probability for a given slot that node D successfully transmits a frame? (Note: In any given slot, D may or may not attempt to transmit.) (b) What is the probability for a given slot that node C successfully transmits a frame? (c) What is the probability for a given slot that no node attempts to transmit a frame? 3. Consider four nodes, A, B, C, and D that use the slotted ALOHA protocol to contend for a channel. Assume that each of nodes A, B, and C attempts to transmit in each slot with probability p, and assume that node D attempts to transmit in each slot with probability 2p. That is, each node always has a frame to send, and the node transmits with the given probability for a fresh frame as well as for a frame that has already suffered a collision. (a) What is the probability for a given slot that node D successfully transmits a frame? (Note: In any given slot, D may or may not attempt to transmit.) (b) What is the probability for a given slot that node C successfully transmits a frame? (c) What is the probability for a given slot that no node attempts to transmit a frame?
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The slotted ALOHA protocol is a random access protocol where time is divided into discrete slots and nodes attempt to transmit at the beginning of eac... View the full answer
Related Book For
Computer Networking A Top-Down Approach
ISBN: 978-0136079675
5th edition
Authors: James F. Kurose, Keith W. Ross
Posted Date:
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