In general, techniques are described for simplifying admission control signaling between subscriber devices, access nodes, and service edge routers to facilitate subscriber-specific admission control for multicast streams. In one example, a service edge router receives a service request and accesses a subscriber profile to determine whether the requesting subscriber is authorized to receive the service. Upon authorization, the service edge router returns the service request to the access node in a substantially similar form in which the service request was received. The access node receives the service request on a service edge router-facing interface, indicating the service edge router has granted authorization for the subscriber device to receive multicast traffic associated with the multicast group identified within the service request. The access node therefore modifies internal mapping tables that determine local elaboration of multicast traffic associated with the multicast group to include an interface to the subscriber device.

Techniques for using traceroute with tunnels and cloud-based systems for determining measures of network performance are presented. Systems and methods include receiving a request, from a client, for a trace of the tunnel; causing the trace inside the tunnel; obtaining results of the trace inside the tunnel; and sending the results of the trace inside the tunnel to the client so that the client aggregates these details with details from one or more additional legs to provide an overall view of a service path between the client and a destination.

A network element in a data center includes a plurality of servers and a switch. The switch includes a plurality of physical ports, a packet-forwarding table, and an application program interface (API) for modifying a packet-forwarding behavior of the switch. The packet-forwarding table determines a packet-traffic distribution across the servers by mapping packet traffic arriving at the switch to the plurality of ports. Each port of the plurality of physical ports is in communication with one of the servers. The network element further includes means for determining in real time the packet-traffic distribution across the servers, and means for dynamically changing the packet-traffic distribution across the servers in response to the determined packet-traffic distribution by modifying the packet-forwarding behavior of the switch through the API of the switch.

A method for sending a wireless packet is described. A signal strength of a client is acquired. A priority queue to which the client belongs is set according to the signal strength of the client. A priority of a wireless packet to be sent to the client is set according to the priority queue so as to send the set wireless packet. In the meanwhile, a device for sending a wireless packet is also described. The disclosure can be utilized to put a wireless packet sent to a remote client (STA) having a weak signal into a low priority service queue and put a wireless packet sent to a close STA having a strong signal strength into a high priority service queue, so as to ensure data transmission of the close STA having a good signal and reduce the impact of the remote STA having a weak signal on the performance of the whole wireless network, thus improving reasonable allocation of wireless network resources and the Quality of Service (QoS) of the wireless network to further improve the satisfaction of user experience.

Embodiments of the present invention provide a data sending and receiving method and device. The method includes: receiving a threshold; if a data volume of a packet to be sent is less than the threshold, sending the packet in a first data transmission manner; and if a data volume of the packet is greater than or equal to the threshold, sending the packet in a second data transmission manner. By adopting the technical solution of the present invention, a resource waste caused by transmitting small data in a data transmission manner used for transmitting a large packet in the prior art can be reduced, transmission efficiency of small data can be improved, and a transmission delay can be reduced.

A method is shown for allocating a plurality of channels to a plurality of radio nodes (RNs) in a radio access network (RAN). In accordance with the method, an initial RN is selected from among the plurality of RNs. A first of the plurality of channels is assigned to the initial RN. The first channel is selected such that external interference experienced by the initial RN from sources other than the RAN on the first channel is minimized. A second RN is selected from among the plurality of RNs. A second of the plurality of channels is assigned to the second RN. The second channel is selected such that a metric reflective of an information carrying capacity of the RNs that have already been assigned one of the plurality of channels is maximized. The assigned channels are allocated to the respective RNs to which they have been assigned.

A data transmitting device configured to transmit data to a data receiving device via a communication line, the data transmitting device determines, based on first bandwidth information indicating a first bandwidth of the communication line from the data transmitting device to the data receiving device and first load information indicating a first load of the data receiving device, whether a first process is to be executed on first data before the first data is transmitted to the data receiving device, when it is determined that the first process is to be executed, executes the first process on the first data, and transmits, to the data receiving device, the first data on which the first process is executed, and when it is not determined that the first process is to be executed, transmits the first data to the data receiving device without executing the first process.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for presenting content items. In one aspect, a method includes identifying an opportunity to present a content item at a device and in a manner that precludes a user from accessing content of one or more applications executing on the device. Data relating to a status of each of the one or more applications are identified. A level of urgency for a user to access content of the one or more applications is determined based on the data. A response to the opportunity to present a content item is selected based on the level of urgency for the user to access content of the one or more applications. The response is selected from a first response that causes presentation of the content item and a second response that precludes presentation of the content item.

Methods and systems for selecting routes from among multiple media and/or optimizing transmission across those media are described. A minimum data rate may be determined for transmitting a content item. Based on that minimum data rate, a device may determine whether to transmit the content item via a given medium, select a different medium for transmission, or adjust transmission to compensate for unfavorable network conditions. A device may select a medium based on ranking one or more routes from a content source to a user device. Further, a device may determine a data rate for transmission based on calculating an expected time of transmission that includes time spent performing retransmissions at a given data rate.

An object of the present invention is to avoid the situation where data to be transmitted have to be discarded, even when a network to which the data is to be transmitted is unavailable. The electronic control unit has: a determination part that executes a first determination process for determining whether a network to which data is to be transmitted is available or not; and a transmission part that executes a first transmission process for transmitting the data to the network when it is determined that the network is available, and executes a storage process for storing the data in a storage medium when it is determined that the network is unavailable. The electronic control unit executes the same processes for another network as well.