Mobile Communications Protocols
Administrator
Join Date: Jul 2005
Posts: 152
Join Date: Jul 2005
Posts: 152
Interim Standard 136 (IS-136) is a specific Time Division Multiple Access (TDMA) based radio frequency (RF) standard.
IS-95 is a specific Code Division Multiple Access (CDMA) based radio frequency (RF) standard. With TDMA, multiplexing occurs within time slots within dedicated frequency band for each call or data session. On the other hand, CDMA is a "spread spectrum technology", utilizing all available frequency and time slots within an allocated service band.
It is important to be aware that TDMA and CDMA are digital RF protocols. There are various analog RF protocols that are still in commercial service, but they are being replaced with TDMA and CDMA as mobile operators upgrade their networks.
Mobile Networking Protocols
IS-136 and IS-95 based networks both utilize ANSI-41 as a protocol for mobile networking. ANSI-41 based networks are deployed primarily in the Americas and parts of Asia.
Global System for Mobility (GSM) is a global standard based on TDMA. GSM utilizes the GSM Mobile Application Part (MAP) as a mobile networking protocol.
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Join Date: Aug 2005
Posts: 15