Design and Performance of 3G Wireless Networks and Wireless by Mooi Choo Chuah, Qinqing Zhang

By Mooi Choo Chuah, Qinqing Zhang

Layout and function of 3G instant Networks and instant LANs is for instant verbal exchange procedure engineers, community engineers, execs, and researchers. community architectures of UMTS, CDMA2000 platforms, and the way significant community parts in the 3G networks will be designed, are defined. additionally, the authors describe how end-to-end functionality for voice and information companies should be made up our minds. in addition they supply instructions on how radio entry networks and middle networks will be engineered. Of equivalent value, is inclusion of reasons of assorted instant LAN criteria (IEEE 802.11a, 802.11b, 802.11g, 802.11e) and the way voice and information providers may be provided within the instant LAN structures. extra highlights comprise: - evaluate of center rules of instant communications (e.g. FDMA, TDMA, CDMA) airlink skill research, and assessment. - site visitors version descriptions and illustrations for circuit-switched and packet-switched companies. - In-depth assurance of ways base station and radio community controller should be designed to fulfill skill standards. - dialogue of designated layout concerns in 3G networks, cutting edge ideas, and attainable new 3G beneficial properties. This fabric additionally presents skill engineering guidance for 3G networks and instant LANs. assessment routines are supplied on the finish of every bankruptcy to facilitate educating and self research.

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Each subframe contains a 3-byte compressed UDP/IP header and the data (either voice or data RLC Protocol Data Units). LIPE [ChuOO] is a protocol proposed by Bell Laboratories researchers for multiplexing small voice/video/data frames into a single IP packet. LIPE uses either UDP/IP or IP as the transport layer. Its protocol stack and the encapsulated format are shown in Figure 2-7. The MPLSMux scheme proposed in [Chu03a] is illustrated in Figure 2-8. Each subframe contains a header (LEN field) that conveys the length of the subframe.

For thirdgeneration networks such as UMTS, the standards (for UMTS only Release 99 standard) mandate that ATM be used as the transport technology for carrying voice and data traffic in the radio access networks. This is because the MAC protocol units between the base stations and radio network controllers need to meet tight delay/jitter requirements. ATM can negotiate the required QoS treatment and enforce it accordingly. 933]. The primary advantages that such a transition offers to the service providers are the potential savings resulting from the less expensive IP equipment cost and the ease of maintenance due to the convergence of core and access networks.

The following are common techniques used for QoS engineering: • Traffic characterization Before any QoS engineering work can be performed, the traffic engineer needs to understand the different applications that will be used by the subscribers, the traffic arrival patterns of such applications, and the packet sizes/volume generated/received by such applications during a typical active session. , available power, airlink capacity, buffers, CPU processing power within network elements. Therefore, admission control modules exist within different network elements to grant permission for different users to use different segments of the network resources.

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