Abstract: A method of operation of a multi-hop wireless communication system comprising operating a first device to communicate with one or more network devices using a preamble sequence; locating the first device within range of a network entity; and switching the preamble sequence of the first device to a second preamble for communicating with the one or more network devices.

Abstract: Techniques are provided which can allow a host to determine whether to send a DNS request via a distributed Domain Name Service (DNS) protocol or a regular DNS protocol.

Abstract: A system and method for cognitive communication device operation. In accordance with the system and method, a node (102, 106, 107) that communicates in a wireless multihopping communication network (100) uses a receiver (302, 402, 502, 602) to acquire a digital sample of a communication signal, and extracts at least one feature of the digital sample. The node (102, 106, 107) employs a classifier (306, 406, 506) to determine the signal type, and a transmitter (108) to send feature vectors including information representing the signal type to other nodes (102, 106, 107) in the network (100).

Abstract: In a multihop network having a first type of node, a second type of node and a third type of node, techniques are provided for optimizing topology learning in the multihop network which can reduce the amount of control traffic that occurs due to frequent topology changes. For example, each of the nodes can transmit a node identifier and status information to the first type of node. The status information associated with each node can include a node type and a mobility state of the node. The first type of node can store the node identifier and the status information from each of the nodes. The first type of node can reserve or allocate a channel resource to each of the second type of nodes having a mobile state. The channel resource is used by the second type of node for exchanging topology information with the first type of node.

Abstract: A system and method for data transmission using a multichannel medium access control (MAC) protocol to send small messages on the reservation channel directly without any RTS/CTS handshake or channel switching delays. The message is assigned a special type so that it can be distinguished from the RTS/CTS message. The message can also include information about congestion, activity, device type, mobility level, and so forth.

Abstract: A method and apparatus for authentication in a wireless communication network is disclosed. A secret is shared between a mobile device and a home device. When a mobile device requests a connection to a remote device and the remote device does not have knowledge of the shared secret, the remote device determines whether the mobile device can connect to the remote device by concurrently sending a challenge to the mobile device and the home device. The remote device then compares the responses from the mobile device and the home device.

Abstract: A method and system for secure processing of authentication key material in an ad hoc wireless network enables secure distribution of the authentication key material between a mesh authenticator (110) and a mesh key distributor (115), which may be separated by multiple wireless links. The method includes deriving a pairwise transient key for key distribution (PTK-KD) using a mesh key holder security information element (MKHSIE). A mesh authenticator pairwise master key (PMK-MA) is then requested using a first mesh encrypted key information element (MEKIE) that includes data origin information. Using the pairwise transient key for key distribution (PTK-KD), a second mesh encrypted key information element (MEKIE) is then decrypted to obtain the mesh authenticator pairwise master key (PMK-MA).

Abstract: A method and system for providing credit for participation in an ad hoc wireless communication network is useful for improving network efficiency. The method includes receiving at a first network node a first data packet transmitted from a second network node (step 305). The first data packet includes payload data and credit claim data. The first node then determines that the credit claim data should be forwarded to a credit accounting authority (step 310), so a second data packet is then transmitted from the first node to the credit accounting authority (step 315). The second data packet includes some of the credit claim data. The first node then transmits a third data packet to a third network node, where the third data packet includes the payload data (step 320).

Abstract: A system and method for providing a traffic control scheme for QoS provision and congestion control across multiple interfaces of wireless nodes (102, 106 and 107), such as wireless access points (107 and 106), communicating in a wireless multihopping communication network (100). The nodes (102, 106 and 107) can include multiple transceivers. The system and method detects bottleneck interfaces in these nodes (102,106, 107) to control the traffic along the path of the corresponding traffic flow. Different measurements and cross-layer feedback are used to differentiate the cause of the congestion, such as wireless link quality degradation due to fading or degradation due to congestion in a shared medium. The nodes (102, 106, 107) inform each other on the status of their congestion level. High and low level signaling and interruption mechanisms are used to control the interfaces of the congested node (102, 106 or 107) to adjust traffic flow and alleviate the congestion.

Abstract: A radiator for an RF communication device (100) including a first member (311, 600) including a first conducting surface (601, 603) operable to provide a radiating surface, a second member (301) including a second conducting surface (303) operable to provide a near field reflector or ground plane surface, the first conducting surface and the second conducting surface being galvanically connected (by 401), wherein the first conducting surface is disposed at an angle relative to the second conducting surface and the first conducting surface includes a first conducting region (601) and a second conducting region (601) having between them a gap (621) having a portion (629) which is tapered.

Abstract: A multicast architecture and method of operation for multi-hop wireless mesh networks is provided. The multicast architecture is above the network infrastructure to identify a group of clients. These clients share the same application and communicate to each other by using a common multicast address.

Abstract: A node (200) includes a processor (201) for determining neighbor nodes in a routing path to a destination based on a routing table associated with the node (200). The node (200) includes a memory for storing a first authenticated tokens. The node includes a transmitter (203) for transmitting a first request-to-route (RTR) message including an indication specifying information units (IUs) from the first node to the neighbor nodes in a routing path from the first node to the destination. The node (200) includes a receiver (205) for receiving a neighbor reply message from one of the neighbor nodes to the first node which indicates that the neighbor node will route the information units (IUs). The transmitter (203) transmits a second authenticated tokens from the first node to one of the neighbor nodes. The second authenticated tokens are converted into a tradable entity and provide compensation to the neighbor node selected.

Abstract: System and method are provided for establishing internet protocol (IP) communication between a mobile node (MN) and one or more mobile networks. The method includes receiving (100) a request from a MN when the MN joins a first mobile network, creating (105) routing information indicating a home address of the MN, and announcing (110) the home address to the nodes of the mobile network(s). The request indicates the home address of the MN.

Abstract: The disclosure relates to techniques and technologies for establishing a secure link between a mesh authenticator and a mesh key distributor for transporting security association messages. The secure link can allow the mesh key distributor to communicate results of an authentication process to the mesh authenticator.

Abstract: A system and method for routing packets in a multihopping wireless communication network (100). The system and method selects a node (106-1) of the wireless network (100) to operate as an aggregation point, at which two or more possible routes for transmitting packets or packet fragments from a source mobile node (102-1) to a destination mobile node (102-2) meet. A primary route is selected based on historical quality of one or more links between nodes (102, 106, 107), and one or more secondary routes are selected based on the success rate of packets reaching the aggregation point.

Abstract: A system and method for enhancing media access control (MAC) address privacy in a multi-hop wireless network, comprising providing at least one node which generates a temporary MAC address for itself for use in the network by at least one other node, and which ensures that the temporary MAC address is unique among other nodes in the network prior to using the temporary MAC address.

Abstract: A method is used by a mesh point that includes one or more step of receiving one of a beacon and probe response from an other mesh point; setting a state of whether the mesh point is already synchronized with one or more peers to true and performing a beacon timing synchronization function when the mesh point is in the unsynchronized state and the other mesh point requests synchronization from a peer mesh point; adding an identity of the other mesh point to a database of beacon senders maintained by the mesh point and performing a beacon timing synchronization function when the mesh point and the other mesh point are both synchronized; and providing indications of whether the mesh point supports synchronization, requests synchronization from a peer mesh point, and is already synchronized with one or more peer.

Abstract: Techniques are provided for allowing a node (300) in an ad hoc network to deterministically decide whether to relay broadcast information to another node in the ad hoc network. The node (300) receives broadcast information and measures received signal strength (RSS) of the broadcast information. The node (300) may determine if the measured RSS is below a low threshold, and if so, can relay the broadcast information to neighbor nodes. Otherwise, the node (300) can also determine if the measured RSS is above a high threshold, and if not, wait for a waiting period before relaying the broadcast information to the neighbor nodes. The node (300) may dynamically adjust the low threshold by decreasing the low threshold as the number of neighbor nodes increases and may dynamically adjust the high threshold by increasing the high threshold as the number of neighbor nodes decreases.

Abstract: A system and method for achieving crest factor (CF) reduction for multi-carrier modulation in a wireless communication network (100), such as an ad-hoc peer-to-peer multi-hopping mobile wireless communication network (100). The system and method use the properties of the Inverse Fourier Transform (TFT) for achieving crest-factor reduction. Specifically, the system and method map original signal input frequencies to a new set of frequencies by mapping every input frequency to some other input frequency, and then using the IFT to create multiple versions of the transmitted signal and then computing the transform with the lowest CF and selecting that signal for transmission.