By Ralf Kreher
This thoroughly revised and up-to-date version of the hugely profitable UMTS Signaling offers a deep perception into all points of UMTS signalling. The bankruptcy constitution has been transformed for enhanced “usability” for readers, in addition to together with many new positive factors and updates.
The profitable trial, deployment, operation and troubleshooting of 3G or UMTS infrastructures and functions is the largest problem dealing with today’s cellular communications. community aspect instability, community point and multi-vendor interoperability, configuration and community making plans faults are only many of the demanding situations affecting functionality and profitability that must be addressed. This booklet is a useful advisor to resolving such problems.
Highlights of the second one Edition:
- Includes new info and situations on HSPA / HSDPA / HSUPA, and IMS
- Covers not just WCDMA, but additionally TD-SCDMA issues
- Contains updated info on releases five and six, and incorporates a new bankruptcy at the destiny releases 7 and 8
- Provides the most important info for community operators and kit providers prepared to appreciate the way to deal with and examine UMTS signaling approaches that allows you to get the community into operation, discover error and troubleshoot faults
- Uses first hand, genuine global info to provide an explanation for matters that are uncertain within the standards
- Includes complete descriptions and documentation of UMTS reference situations for various UMTS procedures
The unified accomplished strategy taken by way of the authors makes this publication crucial studying for engineers in community operators, integrators or method providers who must be on the innovative of this expertise. it is going to even be a useful source for postgraduates on telecommunications classes, specially people with a spotlight on sign research.
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Extra info for UMTS Signaling: UMTS Interfaces, Protocols, Message Flows and Procedures Analyzed and Explained
High-speed trains, telematic services); macro cells for large area coverage) – higher capacities – very high data rates (WLAN) – large cells/high mobility (MBWA). r Multiple Input Multiple Output (MIMO): – spatial multiplexing with multiple input and multiple output – improves HSDPA capacity and peak rates – peak rates up to 30 Mbps and beyond. 6 kbps. 6 kbps. UMTS-GSM compatibility; evolution of GSM towards UMTS. GSM Phase 2+ PS core network (GPRS), VHE, CAMEL, MExE, STK, OSA, higher data rates (HSCSD, GPRS and EDGE), enhanced speech codecs (EFR and AMR), MMS.
35 Enigma and Bomb as examples for decryption and encryption. g. 36 Potential attack points of intruders. Asymmetric technologies use one encryption key (public key) and another decryption key (private key). It is not possible to calculate the decryption key by knowing only the encryption key. The most common asymmetric ciphering method is RSA, developed by Rivest, Shamir, and Adleman in 1978. The method is based on the principle of big prime numbers: It is relatively easy to detect two prime numbers x and y with 1000 and more digits.
After these procedures the user will be sure that he is connected to his served/trusted network and the network is sure that the claimed identity of the user is true. Authentication is needed for other security mechanisms such as conﬁdentiality and integrity. 40 UMTS interface and domain architecture overview. 48 UMTS Signaling Integrity Integrity protection is used to secure that the content of a signaling message between the user and the network has not been manipulated, even if the message might not be conﬁdential.
UMTS Signaling: UMTS Interfaces, Protocols, Message Flows and Procedures Analyzed and Explained by Ralf Kreher