Cellular Networks : A Type Of Wireless Wan Essay

1167 Words Oct 8th, 2016 5 Pages
Cellular networks are a type of wireless WAN. Various technologies are utilized in cellular networks but there are only three basic modes of signal communications. These are simplex, half duplex and full duplex. In simplex transmissions the signal goes in only one direction and this type is usually seen in television and radio stations. Half duplex signaling is bi-directional but each signal has to wait its turn because only one can travel at a time. Examples of half duplex are the push-to-talk Nextel phones and standard walkie-talkies. The third communication mode that allows for simultaneous bi-directional signal transfer is known as full duplex. Cellular technologies utilize full duplex (Gow & Smith, 2006). The purpose a cellular network is to connect a highly mobile society and provide not only voice connections but also broadband connections (Kumar, Bhola, & Batra, 2014). My current cellular phone is a 4G LTE and until this class I had no idea what that meant other than 4G was better than 3G. LTE stands for long-term evolution and provides for high-level performance and capacity (Kumar et al., 2014). Other technologies used are wideband code division multiple access (WCDMA), high-speed packet access (HSPA), global system for mobile communication (GSM), general packet radio service (GPRS), international mobile communications (IMT-2000), and wireless fidelity (WiFi) (Kumar et al., 2014). There are two main 4G networks in the U.S. and they are LTE and WiMax. The…

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