From GSM to LTE: An Introduction to Mobile Networks and by Martin Sauter

By Martin Sauter

Instant platforms resembling GSM, UMTS, LTE, WiMAX, wireless and Bluetooth provide probabilities to maintain humans attached whereas at the circulation. during this flood of know-how, From GSM to LTE: An advent to cellular Networks and cellular Broadband allows readers to envision and comprehend each one know-how, and the way to utilise numerous assorted platforms for the simplest effects. This booklet comprises not just a technical description of different instant platforms to be had at the present time, but in addition explains the reason at the back of the various mechanisms and implementations; not just the 'how' but additionally the 'why' is concentrated on. therefore the benefits and in addition obstacles of every know-how turn into apparent.

Offering a fantastic advent to significant worldwide instant criteria and comparisons of the several instant applied sciences and their functions, this re-creation has been up to date to supply the most recent instructions and actions in 3GPP standardization attaining as much as liberate 10, and importantly features a new bankruptcy on LTE. the recent LTE bankruptcy covers facets similar to Mobility administration and tool Optimization, Voice over LTE, and Air Interface and Radio community.

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Extra resources for From GSM to LTE: An Introduction to Mobile Networks and Mobile Broadband

Sample text

This is the main reason why subscribers can roam in GSM networks across the world that have roaming agreements with each other. The common standard also substantially reduces research and development costs as hardware and software can now be sold worldwide with only minor adaptations for the local market. The European Telecommunication Standards Institute (ETSI), which is also responsible for a number of other standards, was the main body responsible for the creation of the GSM standard. The ETSI GSM standards are composed of a substantial number of standards documents, each of which is called a technical specification (TS), which describe a particular part of the system.

6 The Network Subsystem The most important responsibilities of the NSS are call establishment, call control and routing of calls between different fixed and mobile switching centers and other networks. Other networks are, for example, the national fixed-line network, which is also called the Public Switched Telephone Network (PSTN), international fixed-line networks, other national and international mobile networks and Voice over Internet Protocol (VoIP) networks. Furthermore, the NSS is responsible for subscriber management.

A link with a high bandwidth is used to transfer the packets of many users. By using the destination address contained in each packet, each network node that the packet traversed decides over which outgoing link to forward the packet. Further details can be found in Chapter 2. Owing to the rise of the Internet and IP-based applications, network operators now have to maintain two separate networks: a circuit-switched network for voice calls and a packet-switched network for Internet-based services.

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