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Localization in wireless sensor networks is a main issue, i.e. to determine the position of a given device in the network. Location information of mobile nodes is a demand in many wireless systems. To give the position of the target node reference points have to be used. The node can calculate its distance and/or angle between itself and the reference points. In the 2D space, if a node knows its distance...
This paper proposes an extension of Proxy Mobile IPv6 (PMIPv6) with bicasting for multi-homing and mobility support. In the proposed scheme, the Local Mobility Anchor (LMA) extends its Binding Cache Entry (BCE) for support of multiple bindings, and a mobile node (MN) performs the binding update to LMA. To support the handover, the LMA begins the bicasting of data packets to the New-Mobile Access Gateway...
This paper proposes an enhanced handover scheme of the Proxy Mobile IPv6 (PMIPv6) with partial bicasting in wireless networks. In the proposed PMIPv6 handover scheme, when a mobile node (MN) moves into a new network and thus its Mobile Access Gateway (MAG) performs the binding update to the Local Mobility Anchor (LMA), the LMA begins the `partial' bicasting of data packets to the new MAG as well as...
This paper proposes the two extensive data delivery schemes of Query-based PMIPv6 (Q-PMIPv6) and Signalling Query-based PMIPv6 (SQ-PMIPv6) in wireless networks. In the proposed Q-PMIPv6 scheme, when a correspond node (CN) sends the data packet to mobile node (MN), the Mobile Access Gateway (MAG), which CN is attached to, will send the binding query messages to Local Mobility Anchor (LMA) to get the...
Existing wireless networks typically support mobility by routing via a mobility anchor in a home network, but such via routing can result in non-optimized routes. This paper proposes a method to distribute the functions of the mobility anchor to different networks to avoid such non-optimized routes. It proposes a distributed mobility anchors architecture consisting of home mobility anchors (H-MA)...
One of the most challenged area in fourth generation wireless network is service continuity, i.e., when a mobile node is moving in an overlapping area continuous service must need so there a technique is used called “HANDOVER”. This technique is used to achieve the service continuity, for this we must rely on seamless vertical handover techniques with minimum processing delay. Thus it is necessary...
This paper presents efficient motion detection of mobile node (MN) based on weighted momentum of received signal strength (WMRSS) in support of better handoff management in wireless network. In this method, for making momentum of received signal strength (MRSS) more accurate in detecting motion of MN, weight is applied to the received signal strength (RSS) of MN according to the priority and weighted...
It is proved that wireless network is suitable for disaster information infrastructure because of its robustness, mobility and flexibility. However current conventional wireless networks have limit in communication distance because of low electro-magnetic power density, non-directional antenna. This is quite fatal as emergency network particularly in mountain areas like Japan. In order to solve those...
We consider content discovery and provision in wireless networks with infrastructure, where mobile nodes store, advertise and consume contents while Broker entities running on infrastructure devices let demand and offer meet. We refer to this paradigm as match-making, and study its performance in terms of query success probability, i.e., the probability that a content query is successful. To ensure...
It is proved that wireless network is suitable for disaster information infrastructure because of its robustness, mobility and flexibility. However current conventional wireless networks have limit in communication distance because of low electro-magnetic power density, non-directional antenna. This is quite fatal as emergency network particularly in mountain areas like Japan. In order to solve those...
Because of the virtue mobility, flexibility, and convenience, more and more wireless network are used in our everyday life. During the move between two scales of different AP (Access Point), the quality of the services heavily depends on the seamless handoff scheme which provide less packet lost. There are many people propose lots of strategies to reduce packet lost and do many contribution to it...
In recent years, a lot of terminal mobility support schemes have been proposed. These schemes mainly focus on providing seamless mobility by reducing the handover delay. They work well when the handover takes place between two overlapping wireless networks. However, in some worst scenario, it is possible that a mobile node (MN) becomes disconnected from the network for some time before it can join...
We propose and analyse a new random access protocol with multiple power levels selection schemes for infrastructureless wireless networks. In these networks, mobile nodes may communicate with each other without a central entity (base station), where each mobile node will be either in a transmitting mode or in a receiving mode or in an idle mode. Throughput with random power levels selection scheme...
We present in this paper a novel solution to the problem of vertical handoff for wireless networks when a mobile node carries multiple communication sessions with different QoS requirements. We solve this issue by treating it as a group decision making problem. We extend the classical AHP (Analytic Hierarchy Process) method to provide the mobile node with two types of solutions: a deterministic solution...
With the emergence of the wireless communication technology, it is important to consider the service supporting mobile node. Especially, new multimedia services such as mobile IPTV need multicast technology for efficient delivery of service. Various multicast technologies with use of mobile IP have been suggested, but most of those technologies cannot solve the deployment problem. As an alternative...
One of the main issues in the fourth generation (4G) wireless networks is the vertical handoff decision. The handoff is the mechanism used in order to let a mobile node (MN) switches from a network to another without remarkable service disconnection. Thus, the delay consumed to choose the suitable network to which the MN may connect is a major issue, which may impact the offered quality of service...
Mobile IPv6 supports a global mobility solution in wireless networks. The mobile node is unable to send or receive packets during handover, due to link switching delay and IP protocol operations. This handover latency is caused by standard mobile IPv6 procedures, such as movement detection, new care of address configuration, and binding update. This configuration is the most time-consuming phase,...
Next generation wireless networks are envisaged to be an integration of heterogeneous but complementary wireless access networks. The inter-networking of these heterogeneous wireless networks with the Internet will provide ubiquitous access to roaming network users. However, a seamless handover mechanism with negligible handover delay is required to maintain active connections during roaming across...
This paper presents a novel motion detection scheme by using the momentum of received signal sstrength (MRSS) to improve the quality of handoff in a general wireless network. MRSS can detect the motion state of a mobile node (MN) without assistance of any positioning service. Although MRSS is sensitive in detecting user's motion, it is static and fails to detect quickly the motion changes of users...
Future wireless networks are expected to be based on coexistence of multiple different access network technologies. Mobile devices will then be equipped with multiple wireless interfaces enabling connectivity via multiple architectures. Different wireless technologies differ widely considering their capabilities and coverage. This requires a mobile node to maintain multiple active connections depending...
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