Consider a Bluetooth scatternet consisting of 2 piconets. a. What is the probabi

Question

Consider a Bluetooth scatternet consisting of 2 piconets.

a. What is the probability of a collision between packets of the 2 piconets? Assume nodes are not using CSMA. A successful transmission requires both a successful polling message to be sent from the master to a slave, and then a successful message sent from the slave to the master. Assume there are 80 frequencies possible and in each time slot each frequency is used equally likely. All piconets constantly have packets to send.

b. What is the probability of successfully sending a 5-slot ACL packet in a piconet? Assume the other piconet is only sending 1-slot packets.

Explanation / Answer

b)The preference of the piconet/scatter net plan will be that it permits huge numbers units will stake those same physical zone What's more settle on effective utilization of the data transfer capacity. A Bluetooth framework utilization a frequency-hopping plan for a bearer dividing from claiming 1 mhz. Typically, dependent upon 80 diverse frequencies would used, for an aggregate transfer speed from claiming 80 MHz though recurrence hopping isn't used, a absolute channel might relate with a single 1 MHz band. With recurrence hopping, a legitimate channel may be characterized toward those frequency-hopping successions. At whatever provided for time, the data transfer capacity accessible may be 1 MHz, with an most extreme from claiming eight gadgets imparting those transfer speed. Diverse legitimate channels (different hopping sequences) might at the same time stake those same 80 MHz data transfer capacity. Collisions will happen when units in distinctive piconets, around separate legitimate channels, happen to utilize the same jump recurrence during the same period. Likewise the amount for piconets to a territory increases, the amount about collisions increases, Furthermore execution degrades. Done summary, those physical region What's more aggregate data transfer capacity are imparted by those diffuse net. Those legitimate channel Furthermore information exchange are imparted toward An piconet.

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