Example 2.7 A hexagonal cell within a 4-cell system has a radius of 1.387 km. A total of 60 channels are used within the entire system. If the load per user is 0.029 Erlangs, and 2=call/hour, compute the following for an Erlang C system that has a 5% probability of a delayed call: (a) How many users per square kilometer will this system support? (b) What is the probability that a delayed call will have to wait for more than 10s? (c) What is the probability that a call will be delayed for more than 10 seconds?
Example 2.7 A hexagonal cell within a 4-cell system has a radius of 1.387 km. A total of 60 channels are used within the entire system. If the load per user is 0.029 Erlangs, and 2=call/hour, compute the following for an Erlang C system that has a 5% probability of a delayed call: (a) How many users per square kilometer will this system support? (b) What is the probability that a delayed call will have to wait for more than 10s? (c) What is the probability that a call will be delayed for more than 10 seconds?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Transcribed Image Text:Ехample 2.7
A hexagonal cell within a 4-cell system has a radius of 1.387 km. A total of 60 channels
are used within the entire system. If the load per user is 0.029 Erlangs, and 2= call/hour,
compute the following for an Erlang C system that has a 5% probability of a delayed
call:
(a) How many users per square kilometer will this system support?
(b) What is the probability that a delayed call will have to wait for more than 10s?
(c) What is the probability that a call will be delayed for more than 10 seconds?
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