摘要:
Embodiments of the present invention relate to the communications field, and provide a data transmission method, apparatus, and system, to reduce core network bandwidth resources occupied by data transmission. The method includes: receiving, by a first base station, a request message sent by a first device, where the request message carries identification information of requested data and identification information of the first device, and the first device includes a user equipment or a second base station; retrieving, by the first base station, in stored data according to the identification information of the requested data; and when matched data is retrieved, sending, by the first base station, the matched data to the first device according to the identification information of the first device, where the matched data refers to data that matches the identification information of the requested data.
摘要:
A networked system for managing a physical intrusion detection/alarm includes a network of end nodes, e.g., sensor nodes including one or more constrained sensor nodes for sensing physical conditions, and a gateway to provide network connections for the constrained sensor nodes. The system also includes a range extender for connecting the one or more constrained sensor nodes to the gateway, with the range extender including first and second radios and corresponding processors to wirelessly communicate with the gateway and constrained nodes.
摘要:
A networked system for managing a physical intrusion detection/alarm includes a network of end nodes, e.g., sensor nodes including one or more constrained sensor nodes for sensing physical conditions, and a gateway to provide network connections for the constrained sensor nodes. The system also includes a range extender for connecting the one or more constrained sensor nodes to the gateway, with the range extender including first and second radios and corresponding processors to wirelessly communicate with the gateway and constrained nodes.
摘要:
The present invention discloses a direct-link quality monitoring method, communications device, and system, where the method includes: determining, by a local device after establishing a neighbor relationship with a peer device, whether a quantity of neighbors of the local device is the same as a quantity of neighbors of the peer device; if the quantity of neighbors of the local device is different from the quantity of neighbors of the peer device, electing a device, either the local device or the peer device, with a larger quantity of neighbors as a measurement control point MCP of a direct link between the local device and the peer device; and executing a corresponding monitoring operation according to whether the local device is the MCP of the direct link, so as to monitor quality of the direct link together with the peer device.
摘要:
A networked system for managing a physical intrusion detection/alarm includes a network of end nodes, e.g., sensor nodes including one or more constrained sensor nodes for sensing physical conditions, and a gateway to provide network connections for the constrained sensor nodes. The system also includes a range extender for connecting the one or more constrained sensor nodes to the gateway, with the range extender including first and second radios and corresponding processors to wirelessly communicate with the gateway and constrained nodes.
摘要:
A network system and a method for checking plausibility of value returned by a device in the network system are provided. The network system comprises a plurality of devices. The method for checking plausibility of value returned by a device comprises: computing, by the device, a first hash address in a distributed hash table based on network addressing information and a current output value of the device; determining, by the device, a plurality of current neighbors in the distributed hash table; advertizing, by the device, the current output value of the device and a previous output value of the device to the determined plurality of current neighbors; and checking, by each of the determined plurality of current neighbors, the plausibility of value returned by the device.
摘要:
Systems and methods are provided for flight simulators that share video via peering networks. One embodiment includes a flight tracking controller and connection controller. The flight tracking controller receives static images that represent video feeds from a plurality of flight simulators, transmits the static images to a monitoring entity, and receives a response from the monitoring entity selecting a video feed represented by a static image from a flight simulator. The response identifies multiple candidate paths for streaming the selected video feed from the flight simulator to the monitoring entity across a packet switched network. The connection controller forwards the response to the flight simulator, receives a confirmation from the flight simulator that confirms one of the candidate paths, and forwards the confirmation to the monitoring entity in order to establish a peer-to-peer connection for streaming the selected video feed directly between the flight simulator and the monitoring entity.
摘要:
Methods and apparatus for transmitting service information in a neighborhood of peer-to-peer communication groups are disclosed. A peer-to-peer client device connects to a peer-to-peer communication group via a peer-to-peer group owner. The peer-to-peer client generates a service notification including a category and a sub-category and transmits the service notification to the first peer-to-peer group owner. The first peer-to-peer group owner then forwards the service notification (a) to a first group member that is associated with the category and the sub-category, and (b) to a second group member that is identified as a first bridge and is associated with the category.