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— IP-based solutions to accommodate mobile hosts within existing internetworks do not address the distinctive features of wireless mobile computing. IP-based transport protocols thus suffer from poor performance when a mobile host communicates with a host on the fixed network. This is caused by frequent disruptions in network layer connectivity due to — i)(More)
This paper deals with multicasting in an internetwork with mobile hosts, particularly with regard to Mobile-IP [11] and Distance Vector Multicast Routing (DVMRP) [10, 9] protocols. When the source of a multicast datagram is a mobile host (MH), the datagram may not reach all group members to which the datagram is addressed, including other mobile hosts. When(More)
Over the past few years, Transmission Control Protocol (TCP) has become the most widely used transport layer protocol on the Internet. TCP performs poorly however, if one of the communicating hosts is a mobile wireless computer [6]. One way to address this performance problem is to modify TCP to make it aware of host mobility. Such an approach is infeasible(More)
Networking protocols are being modied to handle mobility of hosts. This paper argues that there is a need to make mobility explicit at every level of the OSI model | even above the network level through user or application level. Further, it is proposed that the mobile host and the rst hop (wireless link) of communication be handled dierently than the rest(More)
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