In order to increase capacity, an array, which can increase the carrier to interference ratio (C/I) at both the base station and the mobile terminal, is required.
The radio and high-speed data links connect the three subsystems. In cellular mobile communication systems, smart antennas (an antenna array with digitally steerable beams) are being used to increase user capacity and expand geographic coverage. It interfaces with telephone company zone offices, controls call processing, provides operation and maintenance, and handles billing activities.Ĭonnections. The switching office, the central coordinating element for all cell sites, contains the cellular processor and cellular switch. Wireless Links and network characteristics WiFi: 802.11 wireless LANs. These cells are created by the radiations from the cell towers owned by the mobile operators. wireless: communication over wireless link mobility: handling the mobile user. It has a control unit, radio cabinets, antennas, a power plant, and data terminals. A mobile cellular network consists of a large number of interconnected coverage zones called cells that are deployed throughout the geographical areas that a mobile network operator wants to cover. The cell site provides interface between the MTSO and the mobile units. Wireless and Mobile Communication Systems Lecture Slide Part 1 Version 2011-2012 Mohd Nazri Mahmud Introduction, OBE This course reviews the topics on optical fibre. A mobile telephone unit contains a control unit, a transceiver, and an antenna system.Ĭell site.
2.1 shows, with connections to link the three subsystems. We can further distinguish two circuit-switched systems: one for an analog system and one for a digital system.Ī basic analog cellular system, consists of three subsystems: a mobile unit, a cell site, and a mobile telephone switching office (MTSO), as Fig. The HLR (home location register) and VLR (visitor location register) are. Both tower and antenna are a part of the BTS, while all associated electronics are contained in the BSC. A generic block diagram in shown in the figure: A BS consists of a base transceiver system (BTS) and a BSC. In a circuit-switched system, each traffic channel is dedicated to a user until its cell is terminated. A cellular system requires a fairly complex infrastructure. What is wireless and mobile networking History of Wireless Challenges of Mobile and Wireless Communication and Networking What is Personal Communications.
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