Multicast QoS Routing Using Collaborative Path Exploration

Quality of Service (QoS) is one of the most active research areas in networking. The most fundamental requirement for QoS routing is the ability to find and maintain a network path that provides the required network resources between two or more nodes. In this paper, we present a distributed collaborative multicast QoS routing architecture that uses a semi-greedy probing heuristic to quickly find a QoS path between a joining node and the multicast tree. The proposed architecture will enable the routers along the path to intelligently and dynamically discover a QoS path. Any router that receives a probe will only know its neighbours and it will create a link to the previous router from where the probe comes from. The proposed architecture is a tree-initiated QoS search and the first QoS packet to reach the joining node will be used as the QoS path. Analysis of this method shows that the path search time and message overhead is lower than other similar schemes

Performance of a shared tree multicast label filter architecture

This paper defines a new multicast filter algorithm. This algorithm is used to filter packets on a mobile multicast architecture using a multicast shared tree. In a mobile multicast architecture, communications between a corresponding node (source) and the mobile node (receiver) should be private and not be sent to every node (receivers) on the multicast tree. We propose using an algorithm that sets up a label sub-tree on an existing mobile multicast shared tree to filter packets based on these labels. Our proposed label filter architecture is implemented differently to the current MPLS architecture. In this paper, we validate the effectiveness of the label filter in mobile communication compared to the traditional method of creating a new multicast tree by analysing the message and time complexity of the algorithm against the setting up time of a new multicast shared tree

Core based tree multicast (M-CBT) approach in supporting mobility

IP multicasting provides a mechanism for faster handoff support than Mobile IP. Coupled with its location independent addressing, multicasting is a viable alternative to support mobility in the Internet. This paper continues research into using IP multicasting in mobility. Our proposed scheme looks at enabling a mobile node to initiate two way communications with a corresponding node on a shared multicast tree. We use as much of the existing Internet architecture as possible by making the base station a member of the multicast group. The mobile is not directly connected to the tree but goes through the base station to send and receive packets. This paper explains the differences and advantages of our proposed scheme compared with other multicast based mobility schemes and Mobile IP

Implementing label filters on a shared tree mobile multicast architecture

This paper describes an architecture that filters packets within a subset of nodes on an existing shared multicast tree. The path connecting the group of nodes that want to communicate privately on the existing tree was given a label. These labels are used to route one-to-one and group communication traffic for selected nodes on a multicast tree. Nodes connected to the tree but are not on this label path do not receive any filtered packets. This filter architecture reduces network resource waste by utilising the existing network resources on the multicast tree like quality of service (QoS). In this paper, we also describe how this architecture can be used for mobile communication when implemented in a shared tree mobile multicast architecture

Mobility and quality of service in wireless multicast infrastructure

This paper defines a new wireless mobility architecture with quality of service (QoS) that uses the fixed network infrastructure for group communication. The mobile core-based tree (M-CBT) architecture uses multicast to provide fast handoff and reduce network utilization costs for group communication. The M-CBT architecture can be coupled with a multicast QoS routing protocol to provide QoS for mobile communication. The Explore Best Path Message (EBPM) protocol is a probe-based dynamic distributed multicast QoS routing protocol that is designed to quickly search the network for an optimal QoS path from a joining node to the multicast tree. This paper illustrates how mobile devices using M-CBT and EBPM can participate in group communications and quickly find a QoS path as theyhandoff to a new network

A Framework for Patient Practitioner Information Exchange

The global Type 2 Diabetes Mellitus (T2DM) epidemic imposes a heavy burden on communities that are ethnically vulnerable to the disease and further disadvantaged by socio-economic circumstance and cultural communications barriers. Aboriginal communities in rural and remote Western Australia are representative of these high-riskgroups. Indigenous patients needing continuous management of T2DM are also experiencing disproportionate risk of co-morbidities and hospitalizations compared with nonindigenous patients. Type 2 Diabetes Mellitus (T2DM) is often described as ’the lifestyle disease’. Within clinical care and patient quality of life management domains, T2DM presents both the healthcare practitioner and the patient with a mosaic of complexities.Information processing demands for self-management of diabetes are extensive, requiring constant self monitoring and assessment of the illness state in order to apply per instance and per condition the most appropriate form of control. In this work we introduce a primary care communications concept tool centered upon optimization of the Patient-Practitioner Interview Encounter (PPIE). The target beneficiary is the Aboriginal T2DM patient living in Western Australia. Avital part of our design effort is therefore dedicated to understanding and responding to the cultural domain barriers, challenges and opportunities of this specific health care environment

Coupling of indigenous-patient-friendly cultural communications with clinical care guidelines for type 2 diabetes mellitus

Distance, terrain, climate and inadequate medical resources seriously constrain health care accessibility for rural and remote Indigenous communities of Western Australia (WA). Management of the Type 2 Diabetes Mellitus (T2DM), a chronic condition affecting Indigenous people much more than non-Indigenous, requires a complex assortment of time-sensitive communications activity and interventions to avert serious complications. Communications barriers arising from pervasive cultural misunderstanding in primary care go far beyond language differences and routine translation techniques. Practitioners and patients lacking the capability and capacity to facilitate dialogue for shared meaning in the examination and testing discourse need a culturally sensitive purpose-driven informatics system of support for the Patient-Practitioner Interview Encounter (PPIE). The dominant unidirectional clinician-biased forms of communication employed by healthcare professionals are a major barrier. Our developing communications support model utilizes the mapping of ontologies. The Community Healthcare ontology is dedicated to mapping a clinical taxonomy for T2DM national guidelines to Aboriginal English (AE). The eventual user interface will represent Aboriginal patient-culture-driven access to and use of interactive audio visual media in the primary healthcare setting.This research objective establishes value of and respect for the Aboriginal patient’s dialectal and pragmatic preferences, thereby enabling us to couple these preferences with Australia’s Standard English clinical communications practice in the treatment and care of IndigenousT2DM patients. A critical capability of the eventual application, especially when phrase ontology guidance enters the interface will be the interception of ambiguities and mitigation of misinterpretation risk. The emphasis is concentrated on bi-directional communications assistance that will not only enhance the Aboriginal patient opportunity to contribute to the PPIE, but will reinforce the value of and reciprocal respect for, sound clinical practice

Chaos Theory Based Detection against Network Mimicking DDoS Attacks

DDoS attack traffic is difficult to differentiate from legitimate network traffic during transit from the attacker, or zombies, to the victim. In this paper, we use the theory of network self-similarity to differentiate DDoS flooding attack traffic from legitimate self-similar traffic in the network. We observed that DDoS traffic causes a strange attractor to develop in the pattern of network traffic. From this observation, we developed a neural network detector trained by our DDoS prediction algorithm. Our preliminary experiments and analysis indicate that our proposed chaotic model can accurately and effectively detect DDoS attack traffic. Our approach has the potential to not only detect attack traffic during transit, but to also filter it

Real-time public group collaboration using IP multicast label filters

Internet based enterprise level collaboration tools enable organizations to make decisions faster and more accurately with less effort. However, these tools provide limited real-time group collaboration within and across organizations. Multicast protocols were developed to provide efficient group communication. This paper proposes a novel IP multicast network layer filter architecture that provides efficient and scalable real-time group collaboration between the required entities within an organization. This proposed network architecture uses a label filter mechanism to improve scalability and bandwidth for one-to-many and many-to-many real-time collaboration

Survey on WI-MAX System Based on Wavelet Packet Modulation Technique

A study within the field of Worldwide ability for Microwave Access system or communication system is way required as communication services. rippling Packet Modulation is AN helpful technique of multicarrier modulation that has high information measure, potency and adaptability. This paper inquires, simulation of IEEE802.16 in MATLAB software package victimization rippling packet modulation in WIMAX. The results show that BER performance of words per minute system is best than OFDM that uses cyclic prefix and consequently has higher SNR. The study is simulated over AN AWGN channel and frequency selective Rayleigh channel. BER performance of various rippling families is planned for this channel conditions OFDM is being wide utilized in wireless communication systems for its ability to cut back the information measure and enhance the information rate. The scheme provides lustiness against interference and may adapt simply to weakening eventualities. This paper offers a comparison of channel performance victimization numerous modulation techniques over completely different weakening environments. Modulation schemes include BPSK, QPSK, 64- QAM that are utilized beneath the influence of AWGN, Rayleigh, flat weakening, frequency selective and Rican attenuation channels. BER (Bit Error Rate) and SNR (Signal to Noise ratio) functions are wont to analyze the performance of information transmitted over these channels Mat research lab is employed to develop the OFDM model and analysis the performance of WiMAX system