By Andrzej Jajszczyk
The final reference on instant technology?now up to date and revised
Fully up-to-date to include the newest advancements and criteria within the box, A advisor to the instant Engineering physique of data, moment Edition presents execs with a one-stop connection with every little thing they should layout, enforce, function, safe, and troubleshoot instant networks.
Written by way of a gaggle of overseas specialists, the publication deals an unrivaled breadth of insurance and a different specialise in real-world engineering concerns. The authors draw upon large adventure in all components of the expertise to discover subject matters with confirmed functional purposes, highlighting rising parts resembling long-term Evolution (LTE) in instant networks. the recent version is punctiliously revised for readability, studies instant engineering basics, and lines a variety of references for additional research.
Based at the components of workmanship coated within the IEEE instant verbal exchange Engineering applied sciences (WCET) examination, this booklet explains:
- Wireless entry applied sciences, together with the most recent in cellular mobile technology
- Core community and repair structure, together with vital protocols and solutions
- Network administration and safety, from operations method types to key safety issues
- Radio engineering and antennas, with specifics on radio frequency propagation and instant hyperlink design
- Facilities infrastructure, from lightning defense to surveillance systems
With this relied on reference at their facet, instant practitioners gets up to the mark on advances and top practices within the box and procure the typical technical language and instruments wanted for operating in several components of the world.Content:
Chapter 1 instant entry applied sciences (pages 1–74):
Chapter 2 community and repair structure (pages 75–134):
Chapter three community administration and protection (pages 135–172):
Chapter four Radio Engineering and Antennas (pages 173–217):
Chapter five amenities Infrastructure (pages 219–245):
Chapter 6 Agreements, criteria, regulations, and laws (pages 247–264):
Chapter 7 primary wisdom (pages 265–282):
Read or Download A Guide to the Wireless Engineering Body of Knowledge (WEBOK), Second Edition PDF
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Additional resources for A Guide to the Wireless Engineering Body of Knowledge (WEBOK), Second Edition
The layer 1 data flow transmitted on dedicated channels (SDCCH or TCH) is the result of a bit-per-bit addition of the user data flow and of a ciphering stream generated by the ciphering/deciphering algorithm. This algorithm uses both a ciphering key and the TDMA frame number. The ciphering key (Kc) is computed independently on both the MS side and the network side by the authentication procedure; algorithm A8 is used to derive Kc. The SIM card is provided by the network operator; thus the network operator can control the security features even in a roaming situation.
The MSC has an interface with the BSC, on the access side, and to the back-end and fixed networks, as indicated earlier. The MSC is a digital exchange entity, able to perform all necessary functions to handle the calls to and from mobile subscribers located in its area, and furthermore, it is able to cope with the mobility of the subscribers, using the HLR and VLR. The signaling exchanges between these entities are specified in the Mobile Application Part (MAP), which is the protocol used to provide roaming.
4 Mb/s; and • The reduction of transmission delays. HSDPA is an optimization of UMTS. The same frequency bands used for WCDMA Phase 1 may be used. A fundamental goal of HSDPA, as is evident from its name, is to provide high throughput in the downlink. To achieve this, it uses methods known from GSM/EDGE standards, including link adaptation and the HARQ (Hybrid Automatic Repeat reQuest) retransmission algorithm. In addition, HSDPA exploits a new dimension of diversity that has not been exploited by other 3GPP systems: the multi-user diversity that takes advantage of the multiplicity of users to optimize the use of radio resources.