Comparison of Common Mobile Radio Systems
By comparing the mobile radio systems we note that each of the mobile system uses a fixed base station for good reason.
- Table 1.5 and Table 1.6 illustrate the types of service, level of infrastructure, cost, and complexity required for the subscriber segment and base station segment of each of the five mobile or portable radio systems.
- It is important to note that each of the five mobile radio systems given in Table 1.5 and Table 1.6 use a fixed base station, and for good reason.
- Virtually all mobile radio communication systems strive to connect a moving terminal to a fixed distribution system of some sort and attempt to look invisible to the distribution system
- Cordless telephones use fixed base stations so they may be plugged into the telephone line supplied by the phone company — the radio link between the cordless phone base station and the portable hand set is designed to behave identically to the coiled cord connecting a traditional wired telephone handset to the telephone carriage
- For the case of low power, hand-held cellular phones, a large number of base stations are required.
- If base stations were not within close range, a great deal of transmitter powerwould be required of the phone, thus limiting the battery life and rendering theservice useless for hand-held users.
- Merging mobile satellite networks willrequire orbiting base stations.