Most current mobile phones connect to a cellular network consisting of switching points and base stations owned by a mobile network operator. but first of all, A cellular network is a radio network made up of a number of radio cells (or just cells) each served by at least one fixed-location transceiver known as a cell site or base station. These cells cover different land areas to provide radio coverage over a wider area than the area of one cell, so that a variable number of portable transceivers can be used in any one cell and moved through more than one cell during transmission. Here is the example of the cellular network radio tower and the structure of the 2G cellular network:
Then the base staion is a GPS receiver at an accurately-known fixed location which is used to derive correction information for nearby portable GPS receivers. This correction data allows propagation and other effects to be corrected out of the position data obtained by the mobile stations, which gives greatly increased location precision and accuracy over the results obtained by uncorrected GPS receivers.Then, a mobile network operator (MNO), also known as mobile phone operator ,carrier service provider (CSP), wireless service provider, wireless carrier, mobile phone operator, or cellular company, is a telephone company that provides services for mobile phone subscribers.The process of becoming a mobile network operator within a country usually begins by acquiring a radio spectrum license from the government. The precise spectrum obtained does depend on the type of mobile phone technology the operator intends to deploy. For example, a Global System for Mobile Communications (GSM) network will require a GSM frequency range.The government may allocate spectrum using whichever method it chooses. example of mobile network operator in Malaysia are DIGI, MAXIS, CELLCOM, U-MOBILE, and ect
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