Pham Huy Hoang

Research on innovating, evaluating and applying multicast routing technique for routing messages in service-oriented routing

MANET (short for Mobile Ad-Hoc Network) consists of a set of mobile network nodes, network configuration changes very fast. Each node will act as a router to maintain network operation. There is no central node for controlling entire network. So routing in MANET is very important.

Innovating R Tree to Create Summary Filter for Message Forwarding Technique in Service-Based Routing

In service-oriented routing [5], the problem for storing routing table of filters includes search predicates received from subscribers through subscription messages is an important job. When a content request happens, subscriber will create one subscription message, the subscription message stores several kinds of information, the most important content is filter that is a conjunction of some constraints [5]. One filter is denoted by F character, that has mathematical formula: F=P1 ΛP2 Λ …Λ Pn (1), in which P1 is service request, has format: P1 = ‘Service_name = requested_service_name’. Every Pi (in which i= \({\overline{2..{\rm n}}}\)) is a constraint that is formed by three components: (Key, op, Value), Key is a keyword for searching, op is an operator, Value is searching condition. Key belongs to the set of name of properties of content that the requested service supplies. Op is operator that depends on the type of data of the Key. Therefore the routing table of the service based routing is a set of filters which are received from all subscribers on networks. The algorithms for inserting, updating, deleting and finding filters that match content messages have been published by service providers are very important. In this paper, We mention the technique on filter summary for storing and searching filter quickly that based on some previous researches and cluster routing [6] based on root’s summary filter.

Building Multiple Multicast Trees with Guarranteed QOS for Service Based Routing Using Artificial Algorithms

In Service Based Routing (SBR), data is transmitted from a source node to destination nodes are not depended on destination addresses. Hence, it is comfortable with new advanced technology as cloud computing and also flexible and reliable. Multicast routing is advanced technique to deliver data simultaneously from one source node to multiple destination nodes with QOS (quality of service). In this paper, we introduce a technique that is extended from multicast technique with multiple multicast trees that are conformed quality of service routing. This technique is based on Greedy, Ant Colony Optimization, and fuzzy logic to get optimal routes to transmit data from one source to multiple destination node very effectively. The usage of the ANT Colony optimization, Greedy, fuzzy logic algorithms to find cyclic or multiple paths routes on each trunk by multiple criterions to transmit data effectively.

Research on Innovating, Applying Multiple Paths Routing Technique Based on Fuzzy Logic and Genetic Algorithm for Routing Messages in Service - Oriented Routing

MANET (short for Mobile Ad-Hoc Network) consists of a set of mobile network nodes, network configuration changes very fast. In content based routing, data is transferred from source node to request nodes is not based on destination addresses. Therefore, it is very flexible and reliable, because source node does not need to know destination nodes. If We can find multiple paths that satisfies bandwidth requirement, split the original message into multiple smaller messages to transmit concurrently on these paths. On destination nodes, combine separated messages into the original message. Hence it can utilize better network resources, causes data transfer rate to be higher, load balancing, failover. Service Oriented Routing is inherited from the model of content based routing (CBR), combined with several advanced techniques such as Multicast, multiple path routing, Genetic algorithm to increase the data rate, and data encryption to ensure information security. Fuzzy logic is a logical field study evaluating the accuracy of the results based on the approximation of the components involved, make decisions based on many factors relative accuracy based on experimental or mathematical proof. This article presents some techniques to support multiple path routing from one network node to a set of nodes with guaranteed quality of service. By using these techniques can decrease the network load, congestion, use network resources efficiently.

Innovating R Tree and Multicast Routing to Make QOS Multiple Paths for Service Based Routing

In the advanced routing of new networks communication and network technologies, it not only operates on some lower levels of a network protocol. But it also operates on some upper layers such as the application layer the highest-level layer in network protocol stack of OSI model. The routing process can be known by a more abstract concept. It can process on many layers on network’s stack of OSI model. So this kind of routing may be called the upper layer routing protocol. As the content based routing, in the service based routing protocol, the information can be classified by categories or service classes. Subscribers and publishers can communicate with each other but they don’t know other’s address. So it is more dynamical in processing and more comfortable for ad-hoc network. However the upper routing must be based on lower layers to make routing decisions. But normal routing protocols are used for most static network or rather small wireless networks or not high mobility networks. In mobile ad-hoc networks, nodes move very often and fast, so bandwidth of connection between them may be reduced. Therefore the transmission delay may be increased. The paper aims at purpose to increate QOS of routing by hierarchical clustering routing by using R+ tree in addition with some advanced techniques multicast routing, multiple paths, use GEN/ BEE/ ANT to optimize routes to transmit data. In R+ tree model, the network’s nodes are managed by Bottom-Up model from leaf nodes to root of the tree. All the leaf nodes, inner nodes and root of this tree are used for two roles: (i) Manage a cluster that consists all nodes that have direct connections with this node; (ii) Operate as a normal node. The paper mentions: (i) Setup hierarchical clustering network by using R tree structure. (ii) Making multicast tree from some cluster heads for fast routing. (iii) Making optimized route by Ant Colony Optimization.

Research on Improving, Evaluating and Applying the Ternary Search Tree and Binary Search for Storing and Searching Content - Based Address for Forwarding Technique in Service-Oriented Routing

Service-based network infrastructure is a new network interface in which the flow of messages is controlled by class of services that generated it. Next is its content, improved shipping address specified by the sender and attached to the message. Networks based on services complement for networks based on traditional unicast and multicast addresses, which provides support for communication patterns based on the service class of large-scale applications, loose connections, multiple partitions and scattered like auctions, information sharing, distributed according to personal information.