551 results about "Mesh node" patented technology

Provided are a method and an arrangement for creating a wireless mesh network in which a new node is provided that is connected between mesh nodes and an AAA server located in an infrastructure network. Based on basic encoding data that is available to the new node following successful initial authentication of a first mesh node, the new node performs the authentication similar to a proxy server instead of an AAA server, particularly for a limited time, during subsequent authentication attempts.

A method and an arrangement are provided wherein a newly added mesh node does not require a link to the AAA server for the purpose of authentication. Authentication is carried out using a node which is already present in the mesh network and which has a link to the AAA server.

A wireless mesh communication protocol that dynamically assigns communication time-slots and frequencies to mesh nodes. A first node is established as a PC that sequentially polls other nodes. A second node responds at a predetermined time with information that includes database records, and then a third node responds similarly. The second node is then established as the PC and the first node is polled during dynamically allocated time-slots and on a frequency that depend on the second node's database records. The third node is then established as a PC and acts similarly. In both cases the first node responds by sending information and data records. The first node is then re-established as the PC. The first node then polls the second and third nodes at times and frequencies that depend on the first node's database records.

We disclose systems and methods of dynamically virtualizing a wireless communication network. The communication network is comprised of heterogeneous multi-RAT mesh nodes coupled to a computing cloud component. The computing cloud component virtualizes the true extent of the resources it manages and presents an interface to the core network that appears to be a single base station.

Wireless network devices discover individual mesh nodes and networks of mesh nodes. An association is formed on the basis of peer-to-peer interactions at layer-1, layer-2 and / or higher layers of the Open System Interconnect (OSI) model. In particular, the system uses Beacon, Probe Request, Probe Response, Association Request, Association Response, and Disassociation frames and introduces a new Extensible Mesh Information Element (EMIE) used by mesh nodes to discover, authenticate, and associate with other peer nodes.

A wireless mesh communication protocol that dynamically assigns communication time-slots and frequencies to mesh nodes. A first node is established as a PC that sequentially polls other nodes. A second node responds at a predetermined time with information that includes database records, and then a third node responds similarly. The second node is then established as the PC and the first node is polled during dynamically allocated time-slots and on a frequency that depend on the second node's database records. The third node is then established as a PC and acts similarly. In both cases the first node responds by sending information and data records. The first node is then re-established as the PC. The first node then polls the second and third nodes at times and frequencies that depend on the first node's database records.

A combined fixed directional and mobile omnidirectional interleaved wireless mesh network is described where the fixed mesh nodes have directional antennas facing in horizontally orthogonal directions. The antennas can be focused to have a horizontal beam width of less than ninety degrees in order to achieve greater strength of signal and radiation. Each directional node can have multiple radios that communicate on separate channels, such that packets propagated through the mesh network can utilize any channel to enter or leave a particular node. The combined network also includes mobile nodes that utilize multiple radios, each connected to an omnidirectional antenna and operating on a different channel. The mobile nodes can maintain constant communication with the directional nodes as they move between various quadrants covered by the directional nodes. The mobile nodes can also maintain connections to each other even during the loss of communication with the fixed directional nodes.

A Grid Proxy Architecture for Network Resources (GPAN) is proposed to allow Grid applications to access resources shared in communication network domains. GPAN bridges Grid services serving user applications and network services controlling network devices through its proxy functions such as resource data and management proxies. Working with Grid resource index and broker services, GPAN employs distributed network service peers (NSP) in network domains to discover, negotiate and allocate network resources such as bandwidth for Grid applications. An elected master NSP is the unique Grid node that runs GPAN and represents the whole network to share network resources to Grids without Grid involvement of network devices. GPAN provides the Grid Proxy service (GPS) to interface with Grid services and applications, and the Grid Delegation service (GDS) to interface with network services to utilize network resources. Resource-based XML messaging is employed for the GPAN proxy communication.

Abstract of the DisclosureAn Enhanced Multicast Forwarding Cache (eMFC) supports multicast transmissions in mobile mesh networks. The enhanced MFC is designed to support mesh node mobility, quality of service, and security requirements that are particular to mesh networks. To achieve these goals, the enhanced MFC draws from a global state maintained by a unicast routing protocol, multicast aware applications, and distributed services. The eMFC distributes this derived global state through the use of an eMFC-specific multicast packet header. Information contained within the eMFC header is also used to collect and derive multicast traffic statistics at each mesh node. To maintain backwards compatibility, multicast traffic without the eMFC-specific header is also honored by the MFC. Mobile mesh network specific interfaces, such as radio interfaces, as well as conventional interface types are supported. Security is maintained through the use of authentication and encryption techniques.

Provided is a power distribution apparatus that includes: a neighboring node information collection unit collecting power distribution amount information and physical distance information between grid nodes from neighboring grid nodes belonging to the same grid network; and a power transmission target node selecting unit allocating priorities to the neighboring grid nodes by using the power distribution amount information and the distance information and selecting a neighboring grid node having the highest priority as a neighboring power transmission grid node by comparing the priorities allocated to the neighboring grid nodes.

A system and method are disclosed, which controls congestion to efficiently transmit data through a network of grid node network in a grid computing environment where a large amount of data is processed. The system and method are performed in such a way that, according to a grid application program's request for distributed processing a large amount of data, the data is divided into packets, the node availability of respective nodes distributed in the grid network is measured with consideration to the bandwidth and the queue size of available grid nodes to avoid and control network congestion that may occur when the packets are processed by distributed processing using the respective nodes, the average node availability of all nodes is predicted using a statistical method, a threshold is calculated based on the predicted average node availability to set a dynamic congestion area representing the congestion level of the respective nodes, and the amount of packet transmission is controlled based on the congestion area. As the grid nodes are managed by controlling congestion, packet loss and packet delay are reduced and the rate of packet processing and the rate of node use are increased. Therefore, data can be stably transmitted to the grid user through the network with an improvement in the Quality of Service (QoS).