This document develops an architecture and a set of requirements needed to support alerting of hosts that are in dormant mode. The architecture and requirements are designed to guide development of an IP protocol for alerting dormant IP mobile hosts, commonly called paging.

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Abstract. This paper 1 presents and evaluates Hash-Based DSR, a DSR extension for !arge networks. This protocol reduces the per-packet control overhead of DSR by compressing the source-route with a Bloom filter. Simulations on !arge networks show that H B-D SR increases the network capacity by a factor of up to 15. H B-DSR is an attractive extension to DSR for !arge ad-hoc networks. Another important property of HE-DSR is that, as opposed to DSR, its performance is similar for IPv4 and IPv6. While 1Pv6 !arge addresses areprohibitive in DSR, we show by simulations that HE-DSR performs as weil for both IP versions. This is important contribution considering the growing interest of the wireless network community for 1Pv6.

IP Paging has received considerable attention recently . Th e IETF has decided to develop an IP Paging protocol an d some IP Paging protocols have been proposed by researcher s [13,12] . However all of these proposals use static and manually configured paging areas . We argue that the size and the shape of paging areas are very critical for the performance of a paging system . A system that allows each hos t to use a paging area that adapts to its mobility and communication patterns will perform better . This paper proposes to extend the IETF IP Paging functional architecture to support adaptive and per-host paging areas . We introduce a new functional module, the Paging Area Configuration Agent (PACA), that automatically configures th e paging area relative to each cell of a cellular domain . . INTRODUCTIO NIn this paper we consider wireless access to the Internet vi a cellular IP networks [2,11] . We envision the next generation of cellular wireless networks as pure IP-based network s where base stations are IP-routers . In these networks, mobility should be handled at the IP layer . Different mobility management protocols have been proposed for such networks (e .g . HAWAII [10], CellularlP [2]) . Mobile IP [9, 5 ] is of course a good candidate but needs some extensions t o be used efficiently in such environments . Mobile IP require s that a mobile host sends a location registration message t o its Home Agent whenever it moves from one point of attachment to another one . These location registrations ar e required even if the mobile host is in dormant mode (i .e . idle) while moving . This signaling cost can become quit e significant as the number of mobile hosts increases and th e cell sizes get smaller . Furthermore with Mobile IP, a dormant host has to wake up each time it moves to send a registration . This is obviously not very power-efficient .Several proposals have been made to extend Mobile IP with paging [13,12] . Paging is based on the division of the network in several paging areas . A dormant mobile host onl y sends a location registration message to its Home Agen t when it enters a new paging area . When the Home Agent needs to contact the mobile host for packet delivery, th e host is paged in its current paging area . The host then reports its exact location to its Home Agent using standar d Mobile IP . The IETF Seamoby Working Group [4] has bee n chartered to develop an IP Paging protocol . Recently, th e working group has proposed a functional architecture and i s currently working on the protocol . Current IP Paging protocol proposals use static and manually configured paging areas . We argue that a system that allows each host to use a per-host paging area that adapts to its mobility and communication patterns will perform better than a scheme that uses static paging areas (in terms of signaling load and power consumption) . This paper proposes to extend the IETF IP Paging functional architectur e to support adaptive per-host paging areas . We do not propose a new IP Paging protocol but rathe...