By Andrzej Jajszczyk
The final reference on instant technology?now up-to-date and revised
Fully up-to-date to include the most recent advancements and criteria within the box, A consultant to the instant Engineering physique of data, moment Edition offers execs with a one-stop connection with every thing they should layout, enforce, function, safe, and troubleshoot instant networks.
Written by way of a bunch of overseas specialists, the booklet bargains an unequalled breadth of assurance and a different specialise in real-world engineering matters. The authors draw upon large adventure in all components of the expertise to discover issues with confirmed useful purposes, highlighting rising parts similar to long-term Evolution (LTE) in instant networks. the recent version is carefully revised for readability, studies instant engineering basics, and contours various references for additional examine.
Based at the parts of craftsmanship lined within the IEEE instant communique 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 procedure types to key safety issues
- Radio engineering and antennas, with specifics on radio frequency propagation and instant hyperlink design
- Facilities infrastructure, from lightning security to surveillance systems
With this relied on reference at their facet, instant practitioners gets on top of things 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 safety (pages 135–172):
Chapter four Radio Engineering and Antennas (pages 173–217):
Chapter five amenities Infrastructure (pages 219–245):
Chapter 6 Agreements, criteria, guidelines, and rules (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
Also, a new modulation is introduced, 16-QAM (Quadrature Amplitude Modulation), in addition to Quadrature Phase Shift Keying (QPSK). The use of more robust coding, fast HARQ, and multi-code operation removes the need for variable SF. Table 1-2 shows some possible modulation and coding schemes. CQI Value 1 2 7 10 15 16 30 Transport Block Size 137 173 650 1262 3319 3565 25558 Number of Codes 1 1 2 3 5 5 15 Modulation QPSK QPSK QPSK QPSK QPSK 16-QAM 16-QAM Table 1-2: Applicable Modulation and Coding Schemes (MCS) for a Given Reported CQI To allow the system to benefit from short-term radio channel variations, packet scheduling decisions are done in Node B.
It measures the received power level from the base station and adjusts its transmit power accordingly. If it receives a strong signal, it can determine that the path loss going back to the base station is low, and it therefore lowers its transmit power. The required mobile 24 A Guide to the Wireless Engineering Body of Knowledge transmit power can be determined by a calibration constant which factors in cell loading, cell noise figure, antenna gain, and power amplifier output. Reverse link closed or inner loop power control is a function of the base station.
In this state, it listens to the network for overhead messages containing network information or pages indicating that a call is being made to the MS. In this idle state, the MS is monitoring what is commonly referred to as a paging channel. There is a link between the amount of pages sent and the quantity of registrations. A balance is needed and proper system design is required to efficiently page the MS for mobile-terminated calls. The more often the MS registers, the mpre precisely the network knows its location so that paging can be targeted to a smaller group of cells, reducing messaging that consumes precious wireless channel capacity.
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