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Routing in cellular networks
Network routing in a cellular network deals with the challenges of traditional telephony such as switching and call setup.〔(【引用サイトリンク】 title=Networking and Understanding Routing )〕 Most of the cellular network routing issues in different cells can be attributed to the multiple access methods used for transmission. The location of each mobile phone must be known to reuse a given band of frequencies in different cells and forms space-division multiple access(SDMA).
==Networks in cellular==
FDMA is one of the multiple access method used in cellular network and 50 MHz blocks of communication channel is assigned which lies in radio frequency range and contains equal number of uplinks(terminal to base station) and downlink(base station to terminal).〔(【引用サイトリンク】 title=Frequency Division Multiple Access (FDMA) and cellular phone technology )〕
One or more than one bidirectional channels are being carried by 10-90 band pairs.
The digital networks on the other hand make additionally use of either code division multiple access or time division multiple access methods.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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