By IEEE Communications Society
The final reference e-book for pros within the instant undefined
the knowledge awarded during this ebook displays the evolution of instant applied sciences, their impression at the career, and the industry's typically approved top practices. geared up into seven major parts of craftsmanship, A advisor to the instant Engineering physique of information (WEBOK) complements readers' figuring out of:
- instant entry applied sciences
- community and repair structure
- community administration and protection
- Radio frequency engineering, propagation,and antennas
- amenities infrastructure
- Agreements, criteria, guidelines, and laws
- instant engineering basics
Complemented with numerous references and proposals for extra analyzing, the WEBOK is an vital source for an individual operating within the instant undefined.
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Extra info for A Guide to the Wireless Engineering Body of Knowledge (WEBOK)
Reverselink QoS is controlled by a token bucket scheme to ensure that average and peak resources utilized by each reverse traffic channel are less than or equal to the limitations imposed by RAN. The limitations are specified by traffic-to-pilot ratios (T2P). LoLat has higher T2P ratios for the first 2 to 3 sub-packets. HiCap has the same T2P ratios for all 4 sub-packets, as illustrated in Figure 1-22. Figure 1-22: Reverse-Link Resource Management for QoS Wireless Access Technologies 39 1xEV-DO Rev.
CQI Transport block size Number of codes Modulation 1 2 7 10 15 16 30 137 173 650 1262 3319 3565 25558 1 1 2 3 5 5 15 QPSK QPSK QPSK QPSK QPSK 16-QAM 16-QAM value Table 1-1: Modulation and Coding Schemes (MCS) for Different CQI Values To allow the system to benefit from short-term radio channel variations, packet-scheduling decisions are done in Node B. If desired, most of the cell capacity may be allocated for a very short time to one user, when radio conditions are the most favorable. , a larger transport block size) can be used.
For example, operators with PDC or 3GPP2 technologies may have chosen to implement UMTS technologies or a 3G operator may choose any of the OFDMA-based technologies in its roadmap. 1 GSM, GPRS, EDGE GSM/UMTS standards and networks range from GSM phase 1 to the HSPA family. GSM Phase 1 is a circuit-switched mobile network technology using TDMA, which provides voice services and shortmessage service (SMS). Subsequent phases of GSM introduced packet services (GPRS) while keeping such fundamental features as TDMA radio transmission, the MAP signaling protocol for roaming, and the security features.
A Guide to the Wireless Engineering Body of Knowledge (WEBOK) by IEEE Communications Society