A system and method for routing network packets. A switch fabric connects a plurality of forwarding units, including an egress forwarding unit and two or more ingress forwarding units, each ingress forwarding unit forwarding network packets to the egress forwarding unit via the switch fabric. The egress forwarding unit includes a scheduler and an output queue. Each ingress forwarding unit includes a Virtual Output Queue (VOQ) connected to the output queue and a VOQ manager. The scheduler receives time of arrival information for packet groups stored in the VOQs, determines, based on the time of arrival information for each packet group, a device resident time for each packet group, and discards the packet groups when the determined device resident time for the packet group is greater than a maximum resident time.

A communication apparatus is mounted on a train and forms a train communication system together with a system control apparatus that generates control frames including general and low-latency frames. The communication apparatus includes: a general transfer processing unit that stores the general frame; a low latency transfer processing unit that stores the low-latency frame, the low latency frame requiring transferring with lower latency than the general frame; a frame identification unit that identifies priority of the control frame and outputs the control frame to the general transfer processing unit or the low latency transfer processing unit based on a priority setting table indicating the priority of the control frame and set in the identification unit; an output control unit that preferentially transfers the low-latency frame over the general frame; and a control unit that modifies the priority setting table.

Systems, methods, apparatus and computer-readable medium are described for improving efficiency and robustness for processing network packets at a network device, such as a customer premises equipment (CPE). The network device may include a plurality of physical network interfaces for receiving and transmitting network packets, and one or more processing entities. The one or more processing entities may provide a first router for providing routing functionality, wherein the first router is not virtualized, enable a virtual machine to execute a second router for providing routing functionality and forward a network packet using the first router or the second router from the device. The one or more processors may be configured to execute instructions associated with the first router from user space.

According to an embodiment, an information processing apparatus includes one or more processors. The processors prefetch a scheduling entry corresponding a future time period in advance from scheduling information including one or more scheduling entries, each entry of which contains a transmission state and an interval for each of one or more transmission queues. The processors determine a starting time of transmission for one or more frames waiting for transmission in each queue, based on the scheduling entry. At least one of timing of the prefetching process and timing of the scheduling process is determined based on a result of comparison of a time difference and one or more thresholds. The time difference is a difference between current time and future time where the future time is a candidate for starting time of transmission.

A router fabric for switching real time broadcast video signals in a media processing network includes a logic device configured to route multiple channels of packetized video signals to another network device, a crossbar switch configured to be coupled to a plurality of input/output components and to switch video data of the multiple channels between the logic device and the plurality of input/output components in response to a control instruction, and a controller configured to map routing addresses for each video signal relative to the system clock, and to send the control instruction with the mapping to the crossbar switch and the logic device.

The present disclosure describes various embodiments of surveillance systems and methods. In one such embodiment, an exemplary surveillance system includes at least one video camera configured to capture video data of a surveilled area; and a computing device that stores a surveillance program. An exemplary surveillance program includes computer-executable instructions configured to: analyze the video data captured by the at least one video camera; identify objects that enter the surveilled area and log a time at which the objects entered the surveilled area; determine an object type for each object; track the identified objects to determine a period of time the objects have been present within the surveilled area; and generate and transmit an alert for each identified object that has been present within the surveilled area for a period of time that exceeds a predetermined time threshold.

Systems, methods, apparatus and computer-readable medium are described for improving efficiency and robustness for processing network packets at a network device, such as a customer premises equipment (CPE). The network device may include a plurality of physical network interfaces for receiving and transmitting network packets, and one or more processing entities. The one or more processing entities may provide a first router for providing routing functionality, wherein the first router is not virtualized, enable a virtual machine to execute a second router for providing routing functionality and forward a network packet using the first router or the second router from the device. The one or more processors may be configured to execute instructions associated with the first router from user space.

A wireless communication circuit for operating over a wireless local area network (WLAN) in which real time application (RTA) traffic and non-RTA traffic coexist and are distinguished from one another. RTA queues are created to enqueue RTA packets while non-RTA packets are pushed into non-RTA queues. Management frames containing RTA session parameters and RTA queue setting information are exchanged between stations. Channel time is allocated to RTA queues for transmitting packets, during which non-RTA queues are not allowed to access the channel. Stations determine which RTA queues to enqueue an RTA packet into based on RTA queue classification information of its RTA session.

A system, process, and computer-readable medium for updating an application cache using a stream listening service is described. A stream listening service may monitor one or more data streams for content relating to a user. The stream listening service may forward the content along with time-to-live values to an application cache. A user may use an application to obtain information regarding the user's account, where the application obtains information from a data store and/or cached information from the application cache. The stream listening service, by forwarding current account information, obtained from listening to one or more streams, to the application cache, reduces traffic at the data store by providing current information from the data stream to the application cache.

A router fabric for switching real time broadcast video signals in a media processing network includes a logic device configured to route multiple channels of packetized video signals to another network device, a crossbar switch configured to be coupled to a plurality of input/output components and to switch video data of the multiple channels between the logic device and the plurality of input/output components in response to a control instruction, and a controller configured to map routing addresses for each video signal relative to the system clock, and to send the control instruction with the mapping to the crossbar switch and the logic device.