By Mooi Choo Chuah, Qinqing Zhang
Design and function of 3G instant Networks and instant LANs is for instant verbal exchange process engineers, community engineers, pros, and researchers. community architectures of UMTS, CDMA2000 structures, and the way significant community parts in the 3G networks should be designed, are defined. additionally, the authors describe how end-to-end functionality for voice and information providers could be made up our minds. in addition they offer guidance on how radio entry networks and middle networks could be engineered. Of equivalent value, is inclusion of motives of assorted instant LAN criteria (IEEE 802.11a, 802.11b, 802.11g, 802.11e) and the way voice and knowledge companies should be provided within the instant LAN systems.
Additional highlights include:
* evaluation of middle rules of instant communications (e.g., FDMA, TDMA, CDMA), airlink ability research, and evaluation.
* site visitors version descriptions and illustrations for circuit-switched and packet-switched services.
* In-depth assurance of the way base station and radio community controller should be designed to satisfy capability requirements.
* dialogue of exact layout matters in 3G networks, leading edge ideas, and attainable new 3G features.
This fabric additionally offers skill engineering guidance for 3G networks and instant LANs. overview workouts are supplied on the finish of every bankruptcy to facilitate instructing and self study.
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Extra resources for Design and Performance of 3G Wireless Networks and Wireless Lans
The second approach is the split-connection approach [Bak95] which completely hides the wireless link from the sender by terminating the TCP connection at the base station and uses a separate reliable connection between the base station and the destination hosts. The second connection can use techniques such as negative or selective acknowledgments to achieve better performance over the wireless links [Har95a]. An example of the split connection is shown in Figure 2-12. In Figure 2-12, we see that packets 2 to 6 are received at the base station but the mobile terminal has not received packet 2 so it keeps sending acknowledgements for packet 1.
3, we use UMTS as an example to show how Quality of Service (QoS) features are provided in 3G networks and how QoS engineering is used to support multimedia applications. UMTS allows a user to negotiate bearer characteristics that are most appropriate for an application. It also allows the bearer properties to be renegotiated during an active session. Bearer negotiation is initiated by a user while bearer renegotiation can be triggered either by a user or by the network. 107] is depicted in Figure 3-1.
We describe each of these activities next. 1 Registration and Call Initiation When a mobile user's phone is activated, it scans for the strongest control channel in its vicinity. Each control channel carries signals from one base station in the vicinity of the cellular phone. Then, the cellular phone tunes to that strongest control channel and decodes the signals in the channel. , the system identifier, how much power it needs to transmit to send information to the base station, which radio channel it needs to use to transmit such information, etc.
Design and Performance of 3G Wireless Networks and Wireless Lans by Mooi Choo Chuah, Qinqing Zhang