Abstract: In a location change reporting method, a session management function entity receives from a mobility management entity information including location change information of UE in a first presence reporting area (PRA), an identity of the first PRA, and an identity of a PRA set that includes the first PRA. The session management function entity identifies, based on the identity of the PRA set and locally stored PRA subscription information, a subscription entity that subscribes to location change events of the UE in the PRA set, and sends the identity of the first PRA and the location change information of the UE in the first PRA to the subscription entity.

Abstract: Apparatuses, systems, and methods assign to a first group of DSL lines a first set of loop lengths and a second set of loop lengths to a second group of DSL lines. A first set of power control parameters is identified for the first group of DSL lines to enable a first upstream rate, subject to a given set of criteria for the second group of DSL lines or subject to a second set of power control parameters for the second group of DSL lines. The first and second sets of power control parameters may then be applied to their respective groups of DSL lines, e.g., to implement upstream power control.

Abstract: The present description is directed towards systems and methods for directing a user request for content over a network to a given content server on the basis of one or more rules. Methods and systems implemented in accordance with the present description comprise receiving a request for content form a user, the request for content including a profile of the user identifying one or more characteristics associated with the user. One or more rules are retrieved for identifying a content server to which a request for content is to be delivered, the one or more rules including at least one of business rules, network rules, and user profile rules. The one or more retrieved rules are applied to the request for content to identify a content server to which the request for content is to be delivered and the request for content is delivered to the identified content server.

Abstract: A forwarding path link table packet is generated, the forwarding path link table packet comprises forwarding information of each SDN switch on a forwarding path; and the forwarding path link table packet is delivered to any one of SDN switches on the forwarding path, to enable the forwarding path link table packet to be delivered among SDN switches on the forwarding path, so as to cause each SDN switch that receives the forwarding path link table packet to generate a forwarding flow table entry of the SDN switch according to the forwarding information of the SDN switch in the forwarding path link table packet, and forward the forwarding path link table packet on the forwarding path.

Abstract: Systems and methods for generating a graphical user interface representation of a network topology using discovery parameters. An example method includes receiving, from a client, user input requesting the graphical user interface representation of the network topology. Discovery parameters for discovering a plurality of nodes in the network may be determined from the user input. First network configuration information may be retrieved from the first node determined from discovery parameters. The configuration information may describe a first subset of the plurality of nodes connected to the first node. A second node may be identified from the first subset. Second network configuration information may be retrieved from the second node, which describes a second subset of the plurality of nodes connected to the second node. The graphical user interface representation may be generated from the network configuration information.

Abstract: Drone-based systems and methods are described for providing an airborne relocatable communication hub within a delivery vehicle for broadcast-enabled devices maintained within the delivery vehicle. Such a method has an aerial communication drone paired with the delivery vehicle transitioning to an active power state, uncoupling from a secured position on an internal docking station fixed within the delivery vehicle and then moving to a first deployed airborne position within the delivery vehicle. At a first position, the method has the aerial communication drone establishing a first wireless data communication path to a first broadcast-enabled device within the delivery vehicle, then establishing a second wireless data communication path to a second broadcast-enabled device within the delivery vehicle. The drone then couples the first and second wireless data communication paths it established operating as the airborne relocatable communication hub for the devices.

Abstract: The subject disclosure relates to facilitating a transmission of data, information or instructions between a mobile device and an electronic storage device. In an aspect, a system is described comprising a detection component that detects, by an application executing on a first device, signal data corresponding to a second device. In another aspect, the system can comprise a requesting component that requests, by the application executing on the first device, from a third device a set of storage data corresponding to the second device.

Abstract: One apparatus includes a processor and a radio transceiver that receives a set of reference signals transmitted from transmission point. The processor selects a subset of beams from a plurality of orthogonal beams based on the received set of reference signals and computes sets of amplitude and phase parameters for one or more channel compression matrices. In some embodiments, each channel compression matrix corresponds to one transmission layer of a multiple-layer transmission and each channel compression matrix is comprised of one or more column vectors. The processor controls the radio transceiver to send indications of the sets of amplitude and phase parameters.

Abstract: A method of determining the location of a mobile computing device includes measuring a first time of flight (ToF) value and a first value of received energy of direct path (EDP) (PR) of a number of acknowledgement (ACK) packets received in response to a number of first probe packets sent to a first mobile device. The method calculates a preliminary distance value (d0) using a ToF-based distance equation, selects an ACK packet with a distance closest to d0 from the number of ACK packets, calculates an initial path loss exponent (?0) of the selected ACK packet sample using d0 and PR. With the access point, the method also includes measuring a second PR for a second number of ACK packets received in response to a number of second probe packets sent to the first mobile device, calculates a supplemental distance value using an EDP-based distance equation and the ?0, and determines the location of the mobile device using multilateration and the supplemental distance value.

Abstract: An example network security and threat assessment system is configured to determine, based on one or more events that have occurred during execution of one or more applications, a potential security vulnerability of a target computing system, where the one or more events correspond to a node represented in the hierarchical risk model. The system is further configured to identify, based on a mapping of the node represented in the hierarchical risk model to a node represented in a hierarchical game tree model, one or more actions that are associated with the potential security vulnerability and that correspond to the node represented in the hierarchical game tree model, and to output, for display in a graphical user interface, a graphical representation of the potential security vulnerability and the one or more actions associated with the potential security vulnerability.

Abstract: A flow policy service that allows clients to define policies for packet flows to, from, and within their virtual networks on a provider network. Logic may be embedded in a flow policy that dictates what happens to a packet as it enters the network, or after the packet leaves an appliance. Via the service, a client may define conditional rules that specify different paths that packets should follow on the provider network according to conditional evaluations of information about the packets, for example source and/or destination endpoints of the packets, or output codes from appliances that process the packets.

Abstract: In various example embodiments, a system, a method, and a machine readable medium to manage multicast traffic are disclosed. The system includes a controller server for receiving first multicast group member information and for providing centralized control of a network. The first multicast group member information is received from a first end-host computer and received at the controller server responsive to a first packet forwarding system identifying the first end-host computer is joining a first multicast group on a first virtual network. The controller server generates a first multicast tree and communicates a first network configuration message to at least one packet forwarding system of the first plurality of packet forwarding systems. The first network configuration message includes a packet flow table entry enabling configuration of a flow table to enable communication of multicast traffic for the first multicast group over a portion of the first multicast tree.

Abstract: Aspects of the disclosure provide a method for restoring connectivity among partitioned segments in a partitioned wireless sensor and actor network (WSAN). The method includes placing batches of mobile nodes at locations surrounding mobile nodes previously placed within a damaged area of the partitioned WSAN, spreading the batches of mobile nodes, determining whether connectivity among the partitioned segments has been restored, and repeating placing batches of mobile nodes, spreading the patches of mobile nodes, and determining whether connectivity among the partitioned segments has been restored when connectivity among the partitioned segments is not restored. The method is based on a distributed dropping approach which introduces minimal disruption to previously deployed mobile nodes, and decreases total traveled distance a mobile node might move compared with a traditional central dropping approach.

Abstract: A non-transitory computer-readable medium storing a computer program readable by a computer of a communication apparatus, the computer program causing the communication apparatus to: when first trigger information for establishing first wireless connection is received, supply a first connection instruction to a first wireless interface and store device information into a memory; when second trigger information is received, supply a second connection instruction to the first wireless interface; and in a specific case where it is not possible to re-establish first wireless connection with the external apparatus, display, on a display, display information for re-establishing the first wireless connection with the external apparatus. The display information includes first display information in case the device information is first device information, and second display information in case the device information is second device information.

Abstract: In one example, a computing device is disclosed, which includes a storage unit, a communication interface, and an authentication unit. The storage unit may store communication information corresponding to a wireless device. The communication information may include information used to establish communication between the wireless device and a user device. Further, the communication interface may receive a request to establish communication with the wireless device from the user device via a short-range wireless communication. Furthermore, the authentication unit may authenticate an access credential associated with the user device to access the wireless device and enable the storage unit to transmit the communication information associated with the wireless device to the user device upon successful authentication. The communication information is set up on the user device to establish communication with the wireless device.

Abstract: Aspects of the disclosure provide a method for restoring connectivity among partitioned segments in a partitioned wireless sensor and actor network (WSAN). The method includes placing batches of mobile nodes at locations surrounding mobile nodes previously placed within a damaged area of the partitioned WSAN, spreading the batches of mobile nodes, determining whether connectivity among the partitioned segments has been restored, and repeating placing batches of mobile nodes, spreading the patches of mobile nodes, and determining whether connectivity among the partitioned segments has been restored when connectivity among the partitioned segments is not restored. The method is based on a distributed dropping approach which introduces minimal disruption to previously deployed mobile nodes, and decreases total travelled distance a mobile node might move compared with a traditional central dropping approach.

Abstract: According to some embodiments, a system and method for managing dynamic tunneling in in a mesh network is disclosed. The method comprises associating an application that transmits high density data packets with a first of a plurality of nodes in a mesh network. The first of the plurality of nodes functions as an originator station for transmitting the high-density data packets to a second of the plurality of nodes in the mesh network that functions as a target station. An auto-trigger to be initiated by the application in a case that the application requires more bandwidth is created. In response to the auto-trigger being activated, a message is generated across the plurality of nodes to activate a best path through the mesh network where the message indicates a time duration that the application will require more bandwidth.

Abstract: Techniques for updating data operations in a perception system are discussed herein. A vehicle may use a perception system to capture data about an environment proximate to the vehicle. The perception system may receive image data, lidar data, and/or radar data to determine information about an object in the environment. As different sensors may be associated with different time periods for capturing and/or processing operations, the techniques include updating object data with data from sensors associated with a shorter time period to generate intermediate object data. Such intermediate object data may reduce a delay in updating a position of an object in an environment, which may improve reaction time(s) and/or safety outcomes in systems implementing such perception systems, such as an autonomous vehicle.

Abstract: Methods and apparatus are described for implementing service discovery protocols on subnetted zero configuration networks. A process for managing service advertisement across a plurality of subnets may comprise: collecting service advertisements on a local network level by designated network devices; sending listings of services from each of the designated devices to a master network device; sending a table of services for the plurality of subnets from the master device to all of the designated devices on the plurality of subnets; creating by each of the designated network devices for the corresponding subnet a service discovery proxy table listing the service advertisements on the subnets of the plurality of subnets beyond the subnet corresponding to the designated device; and periodically transmitting by each of the designated devices on the corresponding subnets service advertisements for the services of the corresponding service discovery proxy table.

Abstract: The present invention discloses methods and systems for sending information packets from a first network node to a second network node. An aggregated tunnel is established between the first network node and the second network node. An information packet is determined whether to be sent according to profile condition(s) of the aggregated tunnel and then according to a selected policy. When a selected policy is selected and the information packet is sent through a tunnel according to the selected policy. When no policy is selected, the information packet is sent through one of a first group of tunnels. When no profile is selected, the information packet is sent through a network interface of the first network node.

Abstract: A direct cloud access (DCA) computing system for enabling access by a developer computing device hosted on a development network to a plurality of production networks hosted on a cloud services platform is provided. The DCA system includes a development private network interface to a private network, and a production private network interface to the private network. The DCA system further includes a plurality of DCA computing devices each coupled to a respective one of the plurality of production networks. Each DCA is programmed to establish a first VPN connection with a developer computing device on the development network via the private network, receive a client VPN packet addressed to the first DCA network address, and transmit the packet to the production computing device based on a resource address.

Abstract: A network element includes one or more ports forming a plurality of optical carriers (Optical Tributary Signal (OTSi)) that transport a single Optical Transport Unit Cn (OTUCn) in a network; and circuitry communicatively coupled to the one or more ports and configured to, subsequent to an optical carrier failure of the plurality of optical carriers, determine which services in the OTUCn are affected, cause signaling of a partial failure for the OTUCn and signaling a failure for the affected services, and cause adjustment of some or all of the affected services on non-failed optical carriers of the plurality of optical carriers.

Abstract: Systems, methods, and computer-readable media for assurance of quality-of-service configurations in a network. In some examples, a system obtains a logical model of a software-defined network, the logical model including rules specified for the software-defined network, the logical model being based on a schema defining manageable objects and object properties for the software-defined network. The system also obtains, for each node in the software-defined network, a respective hardware model, the respective hardware model including rules rendered at the node based on a respective node-specific representation of the logical model. Based on the logical model and the respective hardware model, the system can perform an equivalency check between the rules in the logical model and the rules in the respective hardware model to determine whether the logical model and the respective hardware model contain configuration inconsistencies.

Abstract: User equipments (UEs) may transmit periodic discovery broadcasts to enable another UE to establish a relay connection to a network. When the UEs transmit respective discovery broadcasts, the discovery broadcasts may cause excessive utilization of network or battery resources. In some aspects, described herein, a first UE, based at least in part on failing to receive a periodic discovery broadcast, may transmit a search signal. A second UE may refrain from transmitting periodic discovery broadcasts based at least in part on a first energy metric not satisfying a first energy metric threshold, but may transmit a discovery broadcast as a response to the search signal based at least in part on a second energy metric satisfying a second energy metric threshold, thereby enabling the first UE to establish a connection to a base station using the second UE as a relay.

Abstract: Enhanced channel state information (CSI) feedback is disclosed for full dimensional multiple input, multiple output (FD-MIMO) operations. In one aspect, a single CSI process is defined that is configured with an azimuth and elevation CSI-reference signal (RS) ports. A user equipment (UE) will send a precoding matrix indictor (PMI) report including a precoding matrix indicator (PMI) for the azimuth ports and a PMI for the elevation ports. One of the PMIs is assigned a low rank. The base station will use the two PMIs to create a whole channel precoding matrix. In another aspect, a single CSI process is configured having a plurality of CSI-RS resources. The UE generates channel measurement information for each of the CSI-RS resources, but only sets a CSI report to the base station of a subset of the total number of resources.

Abstract: The present invention relates to a method and an apparatus for connecting adjacent devices using Bluetooth Low Energy (LE). In particular, a method performed in a first device comprises the steps of: receiving an advertisement message from at least one adjacent device, wherein the advertisement message includes information on a content type supported by the at least one adjacent device; transmitting, to the at least one adjacent device, a notification message for notifying a pop-up for a user of the first device on the basis of the advertisement message; and transmitting a connection request message for requesting connection to the at least one adjacent device according to an input of the user.

Abstract: A method and system of time-offset based synchronization for mobile device indoor navigation and positioning. The method, executed in a processor of a server computing device, comprises receiving, at a set of fixed nodes, a wireless signal transmission from a moving node; deriving a time difference of flight (TDOF) offset amongst the set of fixed nodes and the moving node; and localizing the moving node at a given time based at least in part on the TDOF offset.

Abstract: In one embodiment, an exploratory linktrace is initiated from an initiating network device with an exploratory linktrace message (ELM) having a target address. Each network device receiving the ELM may then propagate the ELM on a plurality of its ports to a plurality of downstream network devices based on the target address. In addition, each receiving network device returns an exploratory linktrace reply (ELR) for each of the plurality of ports, where each ELR is returned according to one or more mechanisms to mitigate stormed replies to the initiating network device.

Abstract: The present disclosure provides an apparatus mounted on a host vehicle to detect a duplicate temporary ID in basic safety messages (BSMs). The apparatus includes a receiver and a duplicate identifier. The receiver is configured to receive the BSMs from surrounding vehicles through packet transmission. The duplication identifier configured to identify the duplicate temporary ID based on the BSMs having an identical temporary ID value commonly used by at least two surrounding vehicles. A locator is configured to detect a location for each of the packets based on locational information. An absolute distance calculator is configured to calculate an absolute distance between the locations for two successive packets. The duplication identifier is configured to identify the duplicate temporary ID when the absolute distance calculated by the absolute distance calculator is greater than an absolute distance threshold.

Abstract: Systems, methods, and software described herein provide enhancements for deploying applications in spaceborne and airborne devices. In one example, a satellite device includes one or more sensor systems, a communication interface, and a virtualized execution system. The virtualized execution system is configured to receive state information via the communication interface from at least a peer device related to execution of one or more software payloads by the peer device, and execute one or more virtual nodes based at least on the state information to employ the one or more sensor systems and establish imaging data.

Abstract: A method for operating a user equipment with multi-beam communication capability includes performing measurements in accordance with received reference signals, and determining that at least one antenna panel is unused, wherein the determining is in accordance with the measurements, and based thereon, reporting an availability of the at least one antenna panel.

Abstract: In one example, a router is configured to process communications according to a tunneling protocol to provide network overlay tunnels to facilitate virtual private networks (VPNs) for hosts, and to process communications associated with an external network with use of a provider virtualization routing and forwarding (VRF) instance. With use of a subscription function, the router receives an initial set of extranet VPN prefixes associated with the network overlays for storage in association with the provider VRF, as well as regularly receive publications of updates to extranet VPN prefixes associated with the network overlays. With use of a route obtaining function, the router, in response to receiving a communication associated with one of the stored extranet VPN prefixes at the provider VRF, sends to a communications management server a message indicating request for a host-to-router mapping and receive from the communications management server a reply including the host-to-router mapping.

Abstract: Presented herein are techniques for using mobile client density to compensate for variations in path loss between neighboring access points. In one example, a device (e.g., wireless controller) determines one or more mobile client density variation trends in a wireless network location and determines one or more neighbor message power variation trends between at least first and second access points within the wireless network location. The device generates one or more correlation bias factors using the mobile client density variation trends and the neighbor message power variation trends. The device determines a path loss between at least the first and second access points based on the correlation bias factor and data associated with neighbor messages sent between the first and second access points.

Abstract: An embodiment includes a plurality of tables in a hardware network for performing packet processing. Each table in the plurality of tables includes a table declaration. The table declaration includes a first set of fields used for input matching and a second set of fields used as inputs for action processing. A first table is selected from the plurality of tables. Successor tables to the first table are selected from the plurality of tables. There is a third set of fields for each successor table of the successor tables. The contents of the third set of fields are output fields where the output fields are modified by the first table when a next table of the first table is the successor table of the first table.

Abstract: A session monitoring method is used for determining session information in a service server, and the session information includes at least one type of current session information or historical session information. The current session information is sent to a control device, and the current session information is used by the control device to determine a control instruction. The historical session information is sent to an analysis device, and the historical session information is used by the analysis device to analyze a historical session. The current session information is analyzed, so as to obtain an analysis result of the current session information. Therefore, data is separately processed according to a requirement. This facilitates implementation of a session monitoring solution, reduces resource consumption, and meets a service requirement of session monitoring.

Abstract: Techniques for configuration of a user equipment (UE) for fifth generation (5G) Channel State Information (xCSI) Reference Signals (xCSI-RS) are discussed. One example apparatus employable at a base station comprises a processor configured to schedule a fifth generation Physical Downlink Shared Channel (xPDSCH) during one or more xPDSCH symbols of a subframe n; schedule a final M symbols of the one or more xPDSCH symbols for fifth generation Channel State Information Reference Signals (xCSI-RS); and output one or more control messages to transmitter circuitry for transmission to one or more User Equipments (UEs), wherein the one or more control messages comprise a xCSI-RS configuration for the one or more UEs, wherein the xCSI-RS configuration indicates the value of M and the final M symbols scheduled for xCSI-RS.

Abstract: For a network with host machines that are hosting virtual machines, a method for facilitating BUM (broadcast, unknown unicast, and multicast) traffic between a hardware switch (e.g., ToR switch) and the host machines is provided. The network has a set of host machines configured as a cluster of replicators for replicating BUM traffic from the hardware switch to the host machines. A set of network controllers establishes failure-detection tunnels for links between the hardware switch and the replicator cluster. The replicator cluster informs the set of controllers of a change in the membership of the replicator cluster to initiate an update to the active failure-detection sessions. The set of network controllers communicates with the replicator cluster and a ToR switch to establish bidirectional forwarding detection (BFD) sessions between one or more replicator nodes in the replicator cluster and the ToR switch.

Abstract: The present disclosure includes methods and apparatuses that include write command overlap detection. A number of embodiments include receiving an incoming write command and comparing a logical address of the incoming write command to logical addresses of a number of write commands in a queue using a tree data structure, wherein a starting logical address and/or an ending logical address of the incoming write command and a starting logical address and/or an ending logical address of each of the number of write commands are associated with nodes in the tree data structure.

Abstract: A method for evaluating positioning parameters in a defined area, wherein the defined area is affected by at least three stationary access beam points and over which a grid pattern is laid with at least two grids, each grid having an anchor. An initial vector of positioning parameters is assigned to each anchor and a plurality of RSSI measurements are captured within the defined area by receiving signals from the at least three stationary access beam points. The plurality of RSSI measurement are clustered in a plurality of subsets, wherein the number of subsets corresponds to the number of the at least two grids. Finally, each subset of the plurality of subsets is associated with a respective one of the at least two grids and the initial vector is updated based on the subset of the plurality of subsets associated with the respective one of the at least two grids.

Abstract: Example methods are provided for assigning a routing domain identifier in a logical network environment that includes one or more logical distributed routers and one or more logical switches. In one example, the method may comprise obtaining network topology information specifying how the one or more logical distributed routers are connected with the one or more logical switches; and selecting, from the one or more logical switches, a particular logical switch for which routing domain identifier assignment is required. The method may also comprise: identifying a particular logical distributed router that is connected with the particular logical switch based on the network topology information; assigning the particular logical switch with the routing domain identifier that is associated with the particular logical distributed router; and using the routing domain identifier in a communication between a management entity and a host.

Abstract: A method for facilitating communications between client devices in geographically separated networks is described. First, message monitoring is conducted by each of a plurality of virtual appliances within a local network to detect a message of a first message type. Responsive to failing to locate a Media Access Control (MAC) address of a destination for the message within a prescribed table by a default gateway, one of the plurality of virtual appliances is selected for handling a forwarding of the message to a plurality of remote networks, and the message via the selected virtual appliance is forwarded to a plurality of gateways associated with a plurality of remote networks. Responsive to locating the MAC address of the destination within the table, the virtual appliance previously handling communications with the destination to forward the message to the destination.

Abstract: Network pathways are identified to transfer packets between a pair of regional virtual traffic hubs of a provider network. At a first hub of the pair, a first action is performed, resulting in a transmission of a packet received from a first isolated network to the second hub along a pathway selected using dynamic routing parameters. At the second hub, a second action is performed, resulting in the transmission of the packet to a destination within a second isolated network.

Abstract: In some examples, a wireless device includes a communication interface to communicate with a wireless network, and at least one processor configured to, while the wireless device is in a pre-associated state, receive, from the wireless network, information including a network address policy of the wireless network. The at least one processor is configured to further, in response to the information including the network address policy, use an address of the wireless device according to the network address policy.

Abstract: The present invention discloses methods and systems for managing VPN tunnels. A VPN concentrator establishes a first aggregated VPN connection and a second aggregated VPN connection with a rust host and a first network device respectively. When the first aggregated VPN connection comprises a first plurality of VPN tunnels, the VPN concentrator applies uplink and downlink bandwidth limits to each of the plurality of VPN tunnels. Similarly, when the second aggregated VPN connection comprise a second plurality of VPN tunnels, the VPN concentrator applies uplink and downlink bandwidth limits to each of the plurality of VPN tunnels. The first host encapsulates a first data packet in a first encapsulating packet and transmits the first encapsulating packet to a VPN concentrator using a first aggregated VPN connection.

Abstract: The present invention is to provide a camera retrieval server, a camera retrieval method, and a program for the camera retrieval server, which enables a network camera with high advertising effectiveness to be recognized and retrieved when a company's advertisement is published. The present invention provides a camera retrieval server associates and stores an identifier identifying a network camera, a link destination display request rate showing a display request rate when the display request is made for a link destination related to a banner advertisement replayed together with a moving image output from the network camera, and a keyword showing the type of the banner advertisement, and accepts an input of a predefined keyword from an advertiser's terminal, compare the entered keyword with keywords stored in the server, and extract an identifier of the network camera with a high display request rate for the link destination.

Abstract: Techniques are described for extending a two-way active measurement protocol (TWAMP) to enable measurement of service key performance indicators (KPIs) in a software defined network (SDN) and network function virtualization (NFV) architecture. The TWAMP extensions enable control messaging to be handled by a TWAMP control client executed on a centralized controller, and data messaging to be handled by a TWAMP session initiator executed on a separate network device. Techniques are also described for extending TWAMP to enable measurement of any of a plurality of service KPIs for a given service supported at a TWAMP server. The service KPIs may include one or more of keepalive measurements, round trip time measurements, path delay measurements, service latency measurements, or service load measurements. The TWAMP extensions for the service KPIs may be used in both conventional network architectures and in SDN and NFV architectures.

Abstract: The present invention relates to a wireless communication terminal and a wireless communication method for efficiently scheduling uplink multi-user transmission. To this end, provided are a base wireless communication terminal, including: a transceiver configured to transmit and receive a wireless signal; and a processor configured to control an operation of the transceiver, wherein the processor selects an access category for transmitting a trigger frame which solicits an uplink multi-user transmission, performs a backoff procedure for transmitting the trigger frame based on the selected access category, and transmits the trigger frame when a backoff counter of the backoff procedure expires and a wireless communication method using the same.

Abstract: A secure wireless communication system has a communication device acting as a service seeker (210) and a further communication device acting as a service provider (220) according to a security protocol defining link layer security according to a security mechanism. The service provider enables a first service requiring a link layer security according to a first security mechanism. The devices establish a first secure link connection 5 (241) to engage the first service. The service provider determines that a further service requires a link layer security according to a second security mechanism different from the first security mechanism.

Abstract: In accordance with embodiments disclosed herein, there are provided apparatuses, systems and methods for implementing upstream power control for DSL communications. For example, such a system may include means for: dividing a plurality of DSL lines into a first group of DSL lines and a second group of DSL lines based on characteristics common to each of the DSL lines within the respective first and second groups; determining attainable upstream data rates for the first and second groups of DSL lines according to the characteristics of each group; selecting upstream power control parameters to apply to each of the first and second groups of DSL lines based on the attainable upstream data rates determined; and instructing the DSL lines of the first and second groups to adopt the selected upstream power control parameters. Other related embodiments are disclosed.

Abstract: A method for identifying a critical link in a path between a source node and a destination node in a wireless mesh network, wherein said method comprises the steps of receiving, a forwarding path request, PREQ, message relating to a discovery of a path between said source node and said destination node, determining that further PREQ message relating to the discovery of said path are not received during a predetermined duration, and, triggered by said determination, setting a first critical flag in a discovery table entry associated with said path between said source node and said destination node, and forwarding said received PREQ message to one or more other nodes in said wireless mesh network.