Patent classifications
H04Q11/0478
TRANSMISSION APPARATUS, TRANSMISSION METHOD, RECEPTION APPARATUS, AND RECEPTION METHOD
The present technology relates to a transmission apparatus, a transmission method, a reception apparatus, and a reception method that enable channel selection information and time information to be transmitted effectively.
A transmission apparatus acquires channel selection information for selecting a service and time information used for synchronizations on a transmission side and a reception side, generates, as a physical layer frame constituted of a preamble and a data portion, the physical layer frame in which specific information including at least one of the channel selection information and the time information is arranged at a head of the data portion right after the preamble, and transmits the physical layer frame as digital broadcast signals. The present technology is applicable to IP packet broadcasting, for example.
System-wide synchronized switch-over of multicast flows
A network device includes multiple ports, for communicating over a communication network, and packet processing circuitry. The packet processing circuitry is configured to receive via the ports packets belonging to a plurality of multicast flows, to receive, for each of the multicast flows, (i) a first configuration that specifies clients that are to receive the multicast flow prior to a specified switch-over time, and (ii) a second configuration that specifies the clients that are to receive the multicast flow after the specified switch-over time, to forward the multicast flows via the ports in accordance with the first configuration, to extract from a field in at least one of the packets a value that is indicative of the switch-over time, and, based on the extracted value, to switch-over forwarding of the multicast flows from the first configuration to the second configuration simultaneously at the switch-over time.
Clock synchronization method, receiver, transmitter, and clock synchronization system
A clock synchronization method, a receiver, a transmitter, and a clock synchronization system, where the method includes obtaining a common reference clock signal, determining B.sub.t according to the common reference clock signal and Mr.sub.d(t1), where
determining that Mr.sub.d(t1) is a target Mr.sub.d when C.sub.t obtained by means of calculation according to Mr.sub.d(t1) is less than or equal to a threshold, where C.sub.t=B.sub.tA.sub.t, A.sub.t is included in a residual time stamp (RTS) packet received by a receiver last time from the transmitter, and
Service layer anycast and somecast
Somecast/anycast service may function at the service layer and include service nodes/groups selection and post-selection processing. Somecast/anycast information may be used for identifying different scenarios of anycast/somecast, facilitating service nodes selection, and handling retransmission.
Transmission apparatus, transmission method, reception apparatus, and reception method
The present technology relates to a transmission apparatus, a transmission method, a reception apparatus, and a reception method that enable channel selection information and time information to be transmitted effectively. A transmission apparatus acquires channel selection information for selecting a service and time information used for synchronizations on a transmission side and a reception side, generates, as a physical layer frame constituted of a preamble and a data portion, the physical layer frame in which specific information including at least one of the channel selection information and the time information is arranged at a head of the data portion right after the preamble, and transmits the physical layer frame as digital broadcast signals. The present technology is applicable to IP packet broadcasting, for example.
METHODS, SYSTEMS, AND DEVICES FOR PROVIDING A VIDEO TRAILER FOR MEDIA CONTENT DURING A VOICE COMMUNICATION SESSION
Aspects of the subject disclosure may include, for example, embodiments can include initiating a voice call to a communication device utilized by a subscriber of a media content service. The voice call indicates a video trailer for media content is available for viewing by the subscriber. Further embodiments can include receiving a first request to present the video trailer for the media content in response to the voice call. Additional embodiments can include providing the video trailer to the communication device. Other embodiments are disclosed.
Clock Synchronization Method, Receiver, Transmitter, and Clock Synchronization System
A clock synchronization method, a receiver, a transmitter, and a clock synchronization system, where the method includes obtaining a common reference clock signal, determining B.sub.t according to the common reference clock signal and Mr.sub.d(t1), where
determining that Mr.sub.d(t1) is a target Mr.sub.d when C.sub.t obtained by means of calculation according to Mr.sub.d(t1) is less than or equal to a threshold, where C.sub.t=B.sub.tA.sub.t, A.sub.t is included in a residual time stamp (RTS) packet received by a receiver last time from the transmitter, and
performing frequency division on the common reference clock signal using the target Mr.sub.d as a frequency dividing coefficient to obtain a first clock signal, and performing frequency multiplication processing on the first clock signal to obtain a service clock signal. Hence, random phase offset may be avoided.
Apparatus and method for transmitting/receiving multiuser packet in a mobile communication system
An apparatus and method is provided for generating one packet with transmission data and transmitting the packet from an access network transceiver system (ANTS) to a plurality of access terminals (ATs) in a mobile communication system including the ATs and the ANTS which are capable of performing packet data communication with ATs located in coverage thereof. The method includes the steps of generating a medium access control (MAC) header including information on a receiving AT's address, a length and format for transmission data, generating a MAC payload, by consecutively connecting data units to be transmitted to the receiving AT, and generating a MAC trailer. The ANTS pads 0 bits to the MAC header if a predetermined MAC size is greater than a sum of lengths of the MAC header, the MAC payload and the MAC trailer.
VERY SMALL APERTURE TERMINAL INCLUDING CELL SITE COMPONENTS, AND A SYSTEM
A Very Small Aperture Terminal (VSAT) and cellular system to provide backhaul satellite communications for a cellular base station are disclosed. The VSAT including an Evolved Packet Core (EPC) Core Network (CN) device; and a satellite modem connected to the EPC CN device and to communicate over a satellite link, wherein the EPC CN device manages communication of user traffic from the cellular base station to the satellite modem.
SYSTEM AND METHOD TO SEPARATELY ROUTE CELLULAR VOICE AND DATA TRAFFIC TO DIFFERENT LOCATIONS WITH A SATELLITE BACKHAUL
A cellular system and method to provide voice and data services to a user terminal are disclosed. The cellular system includes a cellular base station; a satellite backhaul including a first satellite link and a second satellite link; and a traffic classifier to classify traffic from the cellular base station as voice traffic for transportation via the first satellite link and as data traffic for transportation via the second satellite link.