Earticle

The radio propagation effect of fading or shadowing between mobile nodes has not been well considered in contact rate. One way to incorporate interference into contact rate is multiplied by probability that the infected node copies the message to the susceptible node during a contact in epidemic routing. In this paper, we develop a model to incorporate the wireless link reliability into contact rate. For application, we proposed a scheme for epidemical delay tolerate network with considering the effects based on the model. Simulation shows that proposed scheme has better performance.

In order to provide guaranteed quality of service for real-time applications in the next IP-based mobile networks, end to end resource reservation should be executed. Two IETF protocols, RSVP and QoS NSLP, have been devised for resource reservation. But both of them are developed without considering mobility management protocols. Tremendous previous works have been carried out to extend these protocols to improve the performance when they are used in IP-based mobility scenarios for resource reservation. This survey provides a description and analysis of these previous works. We list some critical issues regarding resource reservation in IP-based mobility scenarios, and analyze the solutions proposed to address these issues. Also, we point out some opened issues that need to be resolved before resource reservation is widely used in mobility scenarios.

Current mobile networking technology is continuously progressing to support the demand of today’s generation of Internet users who connect about with sophisticated mobile computers and digital wireless devices. Routing protocols needs to be modified in host mobility in order that packets will be sent and delivered in its right destination. In Mobile Internet protocol, the mobile node will be able to send and receive packet from its original Home IP address to its current location regardless of the location upon connection with Internet. Through this kind of connection, packet loss is inevitable during the handover process. To solve this, numerous studies on the handover process was studied in order to minimize packet loss during the handover process. In this paper, we suggest context aware based smart distributed packet (SDP) transmission mechanism using multi-access routing switching mechanism in wireless integrated networks. We will explain and discuss the scheme that supports a distributed fast handover effectively in mobile management protocol based context-awareness. New signaling messages, smart distributed packet update messages, advanced TFRC message and reverse PBUs, are defined and utilized to hasten the handover procedure.