Emerging Wireless Technologies and the Future Mobile by Dipankar Raychaudhuri, Mario Gerla

By Dipankar Raychaudhuri, Mario Gerla

This publication offers a preview of rising instant applied sciences and their architectural influence at the destiny cellular web. The reader will locate an outline of architectural issues for the cellular net, besides extra exact technical dialogue of recent protocol ideas at present being thought of on the learn level. the 1st bankruptcy starts off with a dialogue of expected mobile/wireless utilization eventualities, resulting in an id of latest protocol beneficial properties for the longer term web. this can be by way of numerous chapters that offer in-depth assurance of next-generation instant criteria, advert hoc and mesh community protocols, opportunistic supply and hold up tolerant networks, sensor community architectures and protocols, cognitive radio networks, vehicular networks, defense and privateness, and experimental platforms for destiny net learn. each one of those contributed chapters encompasses a dialogue of recent networking standards for the instant situation into account, architectural ideas, and particular protocol designs, many nonetheless at study degree.

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They have broad applications in Internet access, emergency networks, public safety, and so forth. 5, and 3GPP LTE-advanced. IETF has also defined routing protocols for mobile ad hoc networks. 1 Emerging IEEE WLAN Standards The throughput of wireless LANs1 keeps increasing with advances in radio technologies. 11n standard2 is able to achieve up to 600 Mbps data rate when operating on 40 MHz bandwidth by using advanced physical layer techniques including MIMO and channel bonding. 11a/g radios. At the MAC layer, it is still based on carrier-sensing multiple access with collision avoidance (CSMA/CA) contention-based media access, called enhanced distributed channel access (EDCA) and polling-based content-free media access, called hybrid coordination function controlled channel access (HCCA).

18 At least one MSC in the traditional CS domain is enhanced with interworking functionality and a new interface Sv. The MME in the EPC also needs additional functionality to support the Sv interface and the associated single-radio voice call continuity procedure. Due to the make-before-break approach, the voice interruption in the handover procedure is normally less than several hundreds of milliseconds, which should be imperceptible to the user. However, it cannot be guaranteed that the QoS of the nonvoice session is sustained after the handover because of the bandwidth limitation in the UTRAN/GETRAN.

PMIPv6 provides a network-based mobility mechanism. The mobile access gateway (MAG), that is, the 3GPP S-GW or the non-3GPP mobile access gateway (A-GW) acts as the proxy/foreign agent for the UE and handles the mobility management signaling. Once the UE has changed its point of attachment to a new mobile access gateway, the new MAG provides the UE with the same IP address as the UE had at its previous point of attachment. The new MAG also handles updating the mobility anchor in the network so that the packets arrive at the new point of attachment.

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