Global system for mobile communications (GSM)
نویسندگان
چکیده
منابع مشابه
Global system for mobile communications (GSM)
This paper describes the early history of GSM, who founded it, and why it was founded. Some services of GSM will be described like SMS, and the emergency call service. The network layout of GSM, and the layers of the protocol will also be described. Introduction GSM was conceived in the early 1980’s by the study group: Groupe Spécial Mobile. GSM had some ambitious goals, some were met, and some...
متن کاملRTP Payload Format for Global System for Mobile Communications Half Rate (GSM-HR)
This document specifies the payload format for packetization of Global System for Mobile Communications Half Rate (GSM-HR) speech codec data into the Real-time Transport Protocol (RTP). The payload format supports transmission of multiple frames per payload and packet loss robustness methods using redundancy. Information about the current status of this document, any errata, and how to provide ...
متن کاملURI Scheme for Global System for Mobile Communications (GSM) Short Message Service (SMS)
This memo specifies the Uniform Resource Identifier (URI) scheme "sms" for specifying one or more recipients for an SMS message. SMS messages are two-way paging messages that can be sent from and received by a mobile phone or a suitably equipped networked device. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at in effect on ...
متن کاملExtensible Authentication Protocol Method for Global System for Mobile Communications (GSM) Subscriber Identity Modules (EAP-SIM)
Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. The EAP-SIM protocol was developed by 3GPP. The documentation of EAP-SIM is provided as information to the Internet community. While the EAP WG has verified that EAP-SIM is compatible with EAP, as defined in RFC 3748, no oth...
متن کاملImproved Equalization for Gsm Mobile Communications
An alternative equalization concept for mobile communications is presented. Instead of full-state Viterbi equalization which is the state-of-the-art solution for the GSM system, the application of decision-feedback sequence estimation (DFSE) is proposed. With DFSE, longer impulse responses can be equalized, while complexity remains comparable to the state of the art. It turns out, that a proper...
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ژورنال
عنوان ژورنال: Scholarpedia
سال: 2008
ISSN: 1941-6016
DOI: 10.4249/scholarpedia.4115