Abstract: A switch (110R.3) uses a forwarding database (140F) to forward multicast packets. The switch participates in a multicast protocol (e.g. PIM) with other switches, and also uses a snooping database (e.g. for IGMP snooping) to learn about local group members, i.e. members for which the router serves as a local multicast router (e.g. the local members do not participate in the multicast protocol). When the switch learns of a local member of a multicast group, the switch updates the snooping database but may or may not install the snooping information in the forwarding database. Thus, the forwarding database is not necessarily provisioned for locally sourced data packets addressed to the group until receipt of a locally sourced data packet addressed to the group. If no such packets are received, the forwarding database is not provisioned for such packets, and therefore its size is reduced. Other features are also provided.

Abstract: Systems and methods for multicasting using Bluetooth low energy are described herein. In one embodiment, a first device advertises multicasting capabilities over one or more channels using a first type of advertising packet. One or more receiving devices scan the one or more channels for the first type of advertising packets to identify the first device as a multicasting capable device. Further, the one or more receiving devices request information from the first device as to the channel and timing of transmission of the multicasting data. The one or more receiving devices use the requested information to listen for the multicasting data on the appropriate channel.

Abstract: In a multi-PHY, low power and lossy network comprising a plurality of nodes, a sender determines that a dwell time threshold limit for transmission of data will be exceeded by transmission of the data over a first network interface or that the recipient is unknown. The sender determines transmission parameters for the transmission of the data over the first network interface and transmits the transmission parameters to a receiver device over a second network interface that is different than the first network interface. The sender determines a channel on the first network interface for transmission of the data and transmits the determined channel with the transmission parameters to the receiver, or the receiver determines the channel on the first network interface for transmission of the data and transmits an indication of the determined channel to the sender in response to receiving the transmission parameters.

Abstract: In one embodiment, nodes are polled in a network for Quality of Service (QoS) measurements, and a QoS anomaly that affects a plurality of potentially faulty nodes is detected based on the QoS measurements. A path, which traverses the plurality of potentially faulty nodes, is then computed from a first endpoint to a second endpoint. Also, a median node that is located at a point along the path between the first endpoint and the second endpoint is computed. Time-stamped packets are received from the median node, and the first endpoint and the second endpoint of the path are updated based on the received time-stamped packets, such that an amount of potentially faulty nodes is reduced. Then, the faulty node is identified from a reduced amount of potentially faulty nodes.

Abstract: A method and network device are disclosed for multicast forwarding. In one embodiment, the method includes receiving at a node configured to use a bit-indexed forwarding table a multicast message comprising an incoming message bit array. The method further includes comparing the incoming message bit array to a first neighbor bit array within a first forwarding table entry, and determining that for at least one relative bit position in the bit arrays a corresponding destination node is both a destination for the message and a reachable destination from a first neighboring node. The method further includes forwarding toward the first neighboring node a copy of the message, where a first node on the path of the forwarded message is not configured to use a respective bit-indexed forwarding table. An embodiment of the device includes a network interface, a memory and a processor configured to perform steps of the method.

Abstract: Systems and methods that enable scalable, cost-effective payment reconciliation between owners of devices at least temporarily connected in or to a particular low-power, ad hoc mesh network.

Abstract: Techniques, devices, systems, and protocols are disclosed herein that relate to data transfer between communication nodes via multiple heterogeneous paths. In various embodiments, network coding may be used to improve data flow and reliability in a multiple path scenario. Transmission control protocol (TCP) may also be used within different paths to further enhance data transfer reliability. In some embodiments, multiple levels of network coding may be provided within a transmitter in a multiple path scenario, with one level being applied across ail paths and another being applied within individual paths.

Abstract: A plurality of communication lines are connected to a gateway. The gateway relays a communication message between the communication lines. A communication message input to the gateway from a first communication line out of the communication lines is defined as a first communication message. The gateway generates a communication message for relay. The communication message for relay contains first path information and second path information incorporated into the first communication message. The first path information indicates the first communication line. The second path information indicates the fact that the first communication message has been input to the gateway. Further, the gateway transfers the communication message for relay to at least one communication line different from the first communication line. The communication device determines the reliability of the received communication message based on the first path information and the second path information in the received communication message.

Abstract: A passage channel is calculated by taking into account a plurality of requirements having different importance degrees. A channel calculation unit (202) of a transport control server (100) calculates a plurality of passage channel candidates with respect to a passage setting request wherein an active passage candidate and a standby passage candidate are paired in the passage channel candidate; and calculates the occurrence number of phenomena that violate a predetermined requirement relating an operation of the active passage and the standby passage, or a value of a network element for determining whether the requirement is violated, with respect to each passage channel candidate. A cost calculation unit (205) calculates the cost of a passage channel from the calculated number of occurrence, network element value, and a predetermined cost calculation coefficient corresponding to the requirement.

Abstract: Technology for a lawful interception of a proximity service (e.g., device-to-device (D2D) communication) provided to user equipments (UEs) is disclosed. In an example, a method can include an evolved Node B (eNB) transmitting a proximity service setup message to a first UE to setup D2D communication with a second UE. The eNB can transmit a lawful interception message to the first UE or the second UE to provide lawful interception of the D2D communication. The eNB can receive packets associated with the D2D communication from the first UE or the second UE. The eNB can communicate the received packets from the first UE and the second UE to the core network (CN) to be copied.

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus receives a first MTCH. The apparatus stores MBMS control information for at least a second MTCH. The apparatus subsequently determines to receive the second MTCH. The apparatus then accesses the stored MBMS control information for the second MTCH upon determining to receive the second MTCH. The apparatus receives the second MTCH based on the accessed MBMS control information without acquiring the MBMS control information for the second MTCH after the determination to receive the second MTCH.

Abstract: Some demonstrative embodiments include coordinating a session transfer between first and second multi-band wireless communication devices capable of communicating over at least first and second wireless communication frequency bands, wherein at least one device uses the same medium access control (MAC) address in both the first and second wireless communication frequency bands. An information element may be used to convey information between the devices to assist in the transfer.

Abstract: In a wireless sensor network having a plurality of mobile sensor nodes (62, 63, 64, 65), a sink (70) is provided and re-positioned as required by assigning the role of sink to one of the mobile sensors at a time. Re-positioning involves finding candidate sinks in the vicinity of a current sink, a temporary sink or a central candidate in the network; judging the suitability of each candidate, for example by estimating the data throughput likely to be achieved if each candidate is selected as the new sink; and transferring the role of sink to the best candidate found. The temporary sink or central candidate may be selected with the aid of a positioning system (80) of the network. Suitability of a candidate sink may take into account a desired transmission rate of each sensor node in the vicinity of a candidate, this desired rate being found from a 3-D look-up table of each sensor.

Abstract: A communication device is described including a transceiver configured to establish a communication connection via a first radio cell and to carry out data communication via the communication connection according to a frame structure including a plurality of frames, a determiner configured to determine timings for a plurality of data communications via a second radio cell, determine whether, for any frame of the plurality of frames, the number of timings falling within the frame is above a predetermined threshold and determine, if for any frame of the plurality of frames, the number of timings falling within the frame is above the predetermined threshold, change the timings such that for no frame of the plurality of frames the number of timings falling within the frame is above the predetermined threshold and a controller configured to control the transceiver to carry out the data communications via the second radio cell according to the timings.

Abstract: An approach is provided for control signaling. A sub-set of channel parameters is received. Control channels are automatically mapped to physical resources of a communication network according to the received channel parameters.

Abstract: A system for delay-matched analog self-interference cancellation including a transmit coupler, that samples the analog transmit signal to create a sampled analog transmit signal; a delay matcher that imposes a variable delay on the sampled analog transmit signal to create a delayed analog transmit signal; an analog self-interference canceller that transforms the delayed analog transmit signal to an analog self-interference cancellation signal; and a receive coupler, that combines the analog self-interference cancellation signal with the analog receive signal.

Abstract: A base station is provided. The base station includes a transmit path circuitry to transmit an indication of whether a subscriber station is configured with precoding matrix indicator/rank indicator (PMI/RI) reporting. The transmit path circuitry sets a pre-coding granularity to multiple physical resource blocks in the frequency domain to perform a same pre-coding over a bundled resource block if the subscriber station is configured with PMI/RI reporting. The bundled resource block includes multiple consecutive physical resource blocks in the frequency domain. The base station also includes a receive path circuitry to receive feedback from the subscriber station.

Abstract: A method establishing a quality indicator of a radio transmission channel in a first cell of a cellular network using a plurality of orthogonal frequency-division multiplexed subcarriers for transmitting data. A first transmitter located in the first cell transmits a reference control signal including a total-load control signal modulating one or more of the orthogonal subcarriers, during one or more first symbol times dedicated to transmission of symbols other than data symbols, and a useful-load control signal modulating one or more orthogonal subcarriers during at least one second symbol time dedicated to transmission of data symbols. A transmitter located in an adjacent cell transmits an interfering control signal modulating, during the first symbol time(s). The quality indicator is determined according to a measured quality indicator of the channel under the useful load and a measured quality indicator of the channel under the total load.

Abstract: A method and device for acquiring user equipment duplex mode information are disclosed by the present invention, wherein, the method includes: the user equipment establishes a radio resource control connection with a base station, and reports the user equipment duplex mode information when establishing the radio resource control connection. With the technical scheme provided in the embodiments of the present invention, the network side acquires the duplex mode of the user equipment.

Abstract: According to certain aspects, techniques for periodically reporting channel state information (CSI) on protected and unprotected resources are provided. The protected resources may include resources in which transmissions in a first cell are protected by restricting transmissions in a second cell.