COMPUTER NETWORKS AND COMMUNICATIONS
WIRELESS COMMUNICATION TECHNOLOGIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Connection less
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Connection Oriented
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Packet Switching
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Circuit Switching
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Detailed explanation-1: -GSM uses GPRS, a packet-based communication service, to transmit data, such as through web browsing.
Detailed explanation-2: -GSM has two types of traffic channels TCH/FS and TCH/HS. It is used both in the uplink and downlink after mobile has established connection with the GSM cell (BTS). It uses 26 frame multi frame structure. TCH/FS stands for traffic channel at Full rate speech and TCH/HS stands for traffic channel at half rate speech.
Detailed explanation-3: -Explanation: There are three main control channels in the GSM system. These are the broadcast channel (BCH), the common control channel (CCCH) and the dedicated control channel (DCCH).
Detailed explanation-4: -Traffic channels carry digitally encoded user voice or user data and have identical formats of both forward link and reverse link. Control channels carry signal and synchronization commands between the base station and mobile station. Other control channels are used only for forward and reverse link.
Detailed explanation-5: -A cellular communication system consists of four major components-namely, a public switched telephone network (PSTN), a mobile telephone switching office (MTSO), cell sites with antenna systems, and mobile subscriber units (MSU). Hence option 4th is correct.