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 consultant to the instant Engineering physique of information, moment Edition presents execs with a one-stop connection with every thing they should layout, enforce, function, safe, and troubleshoot instant networks.
Written via a bunch of foreign specialists, the publication bargains an unequalled breadth of assurance and a distinct concentrate on real-world engineering concerns. The authors draw upon vast event in all components of the know-how to discover themes with confirmed useful functions, highlighting rising components comparable to long-term Evolution (LTE) in instant networks. the recent version is carefully revised for readability, reports instant engineering basics, and contours quite a few references for additional research.
Based at the components of craftsmanship lined within the IEEE instant communique Engineering applied sciences (WCET) examination, this publication explains:
- Wireless entry applied sciences, together with the newest in cellular mobile technology
- Core community and repair structure, together with very important protocols and solutions
- Network administration and protection, from operations strategy types to key safeguard issues
- Radio engineering and antennas, with specifics on radio frequency propagation and instant hyperlink design
- Facilities infrastructure, from lightning safety to surveillance systems
With this relied on reference at their facet, instant practitioners gets up to the mark on advances and most sensible 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 safeguard (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 rules (pages 247–264):
Chapter 7 basic wisdom (pages 265–282):
Read Online 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
In slotted mode, a MS is able to power down some of its electronics and periodically wake up to check for new overhead messages or page messages indicating there is an incoming call. The network and MS must be synchronized so that pages for a specific MS are broadcast when it is awake. The longer the sleep period, the better the battery life, but this comes at the expense of a longer duration to page the MS to complete an incoming call. A sleep period of between 2-5 seconds is typically found in mobile networks.
The Gateway GPRS Support Node (GGSN) works with the packet data networks (fixed and mobile). It is connected to the SGSN through an IP network; it contains routing information for GPRS users. These network entities have been defined to work with IP networks. After the rollout of GPRS, a GSM network includes circuit-switched and packet-switched domains. The basic architecture is shown in Figure 1-23. 3 in the next chapter. Figure 1-23: Evolved GSM Architecture (GPRS) EDGE EDGE (Enhanced Data Rates for GSM Evolution) uses more advanced modulation to increase the throughput at the radio interface.
These data are used for two security features, namely the authentication procedure and ciphering. The authentication procedure enables the network to validate the mobile subscriber identity, and thus protects the network against unauthorized use. When the MSC receives a mobile identity (IMSI) transmitted on the radio path, it triggers an authentication procedure. The network sends a random number RAND to the mobile station in order to check that it contains the Ki linked to the claimed IMSI. The Mobile Station applies algorithm A3 to RAND and Ki in order to compute the answer to be sent to the network.