Patent application number | Description | Published |
20080200186 | DETERMINING GEOGRAPHICAL POSITION IN IPV6 NETWORKS - A computer-readable medium, device and system for responding to a request for a geographically-based service are provided. A request for a geographically-based service is received. The received request indicates that a geographical position of a target node and a radius associated with a maximum distance from the geographical position is requested. A requesting service message is formatted that is associated with a higher-layer protocol and includes an indicator indicating that the geographical position of the target node and the radius is requested. The requesting service message is merged in a first header of a requesting datagram which is sent to the target node. A reply datagram is received from the target node and a reply position message component is extracted from the received reply datagram. A reply position message component is extracted from a second header of the received reply datagram. The first geographical position of the target node and the radius from the extracted reply position message component is determined. A response to the received request is provided based on the determined radius and the determined geographical position. | 08-21-2008 |
20080214102 | Method and System to Signal Network Information in TPS Bits - Embodiments are directed to defining hierarchical digital broadcast transport streams as separate cells, which reduces the signaling in OSI layer 1, and removing use of sub-cells so that the coverage area of a transposer may be treated as a cell. In accordance with at least one embodiment, each hierarchical DVB-H stream (i.e., the HP stream and the LP stream) has its own separate dedicated “current signal” frame. This allows the streams to be independent of each other (even to belong to different networks). Furthermore, in accordance with the hierarchical signal arrangement, a cell can be uniquely identified by its network_id and cell_id. In accordance with at least one embodiment, frequency may be used as an additional identifier thereby allowing a first cell to be transposed to a sub-cell. | 09-04-2008 |
20080225778 | Service Discovery Mechanism in Broadcast Telecommunication Network - Aspects of the invention are directed to service discovery in a digital broadcast network. A service discovery descriptor, which may be electronic service guide-provider and cell specific, provides mapping between a service identifier, a logical channel identifier, and a physical channel, which may be characterized by a frame identifier and a slot identifier, that is, each physical channel may have one or more slots within one or more frames. A neighboring service discovery descriptor provides mapping for the service available within neighboring cells. Aspects of the invention are directed to an encapsulation protocol that encapsulates variable length data, including, but not limited to, the service discovery descriptor and the neighboring service discovery descriptor, into fixed length data stream packets. | 09-18-2008 |
20080225838 | Common Rate Matching Slot for Variable Bit Rate Services - In accordance with at least one embodiment, fixed TDM slot/frame structure and statistical multiplexing are combined. A TDM slot, which is fixed (in size and position) is reserved for a variable bit rate service such that the bit rate of the TDM slot/channel is below the average rate of the service. Such a reserved TDM slot may be referred to as a service specific slot. Since the service specific slot is reserved with a bit rate below the average rate of the service, additional capacity is reserved from a rate matching slot, which may be common for multiple services. In this rate matching slot, the capacity may be shared between services according to any suitable strategy for allotting services to portions of the rate matching slot, including, but not limited to, a statistical multiplexing algorithm. | 09-18-2008 |
20080225892 | Using Forward Error Correction with Generic Stream Encapsulation in a Digital Broadcast Network - Aspects of the invention are directed to using forward error correaction in a digital broadcast network that supports generic stream encapsulation. According to an embodiment, error correaction data is calculated over application data, and the application data and error correaction data are encapsulated in generic stream encapsulation packets. In another embodiment, error correaction data is calculated over generic stream encapsulation packets. In yet another embodiment, error correaction data is calculated over, and encapsulated within, generic stream encapsulation packets. In still another embodiment, error correaction data is calculated over application data packets. | 09-18-2008 |
20080225900 | DVB LOW BIT RATE SERVICES - The invention is directed to efficient transfer of low bit rate services in a communication system. A synchronization symbol which has known characteristics may be included as a first symbol of digital broadcast frames. The synchronization symbol, which can be decoded without having to resort to trial and error methods, contains parameters for the rest of the signal. Low bit rate services are allocated to time slots following the pilot symbol used for synchronization allowing for fast access times with maximum power saving capabilities. A user terminal wakes up just before the synchronization symbol and received the data allocated for the low bit rate services. The user terminal may power off for the remaining time slots which are allocated for higher bit services to conserve power. | 09-18-2008 |
20080225995 | Digital Broadcast Service Discovery Correlation - Aspects of the invention are directed to service and channel discovery in a digital broadcast network. A pilot synchronization symbol, which has known characteristics, is included as a first symbol of digital broadcast frames. The pilot symbol, which can be decoded without having to resort to trial and error methods, contains parameters for the rest of the signal. So, the rest of the signal can be decoded without trial and error methods after the pilot symbol (and any additional synchronization symbols) is decoded. Channels containing digital video broadcast services can be efficiently detected using the known part of the signal. If the fixed known part is not found from the examined signal, then the signal will be considered a non-digital-video-broadcast signal or an empty channel, and the receiver can promptly proceed to a next channel/frequency. In this way, detecting non-digital-video-broadcast and empty channels becomes relatively fast. | 09-18-2008 |
20080225996 | DIGITAL BROADCAST SERVICE DISCOVERY CORRELATION - Aspects of the invention are directed to service and channel discovery in a digital broadcast network. A pilot synchronization symbol, which has known characteristics, is included as a first symbol of digital broadcast frames. The pilot symbol, which can be decoded without having to resort to trial and error methods, contains parameters for the rest of the signal. In another aspect of the invention, at least two pilot symbols may be defined and used at the beginning of each frame. The at least two pilot symbols P1 and P2 may enable fast channel search and service discovery within the frame. Signaling may be realized as a combination of L1 and L2 signaling. | 09-18-2008 |
20080285579 | Digital Broadcast Network Best Effort Services - In accordance with an embodiment, a best-effort service is divided into packets for best-effort digital broadcast transmission. The packets are encapsulated with an encapsulation protocol that uses a packet order defining field. The encapsulated packets are inserted into an unused portion of a slot of a digital broadcast transmission frame. Then, the encapsulated packets are repeatedly inserted into the unused portion of the slot of the digital broadcast transmission frame in a packet-carousel fashion. And the transmission frame is digitally broadcast. In accordance with an embodiment, a digital broadcast transmission is received. Encapsulated packets that have been repeatedly broadcast in a packet-carousel fashion are accessed from a best-effort portion of a digital broadcast transmission frame slot. And a best-effort service is composed from the encapsulated packets by combining the encapsulated packets in an order based on a packet order defining field of the encapsulated packets. | 11-20-2008 |
20090059887 | SYSTEM AND METHOD FOR SCHEDULING AND TRANSFERRING DATA THROUGH A TRANSMISSION SYSTEM - A system and method for dynamically dividing the capacity of a fixed time division multiplexing (TDM) frame between physical channels for data transmission. According to various embodiments, a time frequency frame is divided into a plurality of subframes, and each of the plurality of subframes are divided into a plurality of corresponding slots. The plurality of slots are then selectively time shifted such that a defined time shift exists between corresponding slots in each subframe within the time frequency frame. For any slots or slot portions which have been selectively shifted beyond the end of the time frequency frame, such slots or slot portions are cyclically shifted to the beginning of the frame. Service data is then written into the slots of the time frequency frame, and the frame containing the service data can then be transmitted. Initialization and service access processes for a receiver are also provided. | 03-05-2009 |
20090067384 | METHOD AND SYSTEM TO ENABLE SIMULTANEOUS RECEPTION OF PLURALITY OF SERVICES IN DVB SYSTEMS - A method comprises dividing a time frequency frame into a plurality of slots, the frame having one or more radio-frequency (RF) channels, determining a maximum slot length, and scheduling service data in symbols such that all service data symbols are within the maximum slot length of symbols corresponding to at least one common service part. | 03-12-2009 |
20090094356 | Associating Physical Layer Pipes and Services Through a Program Map Table - Embodiments are directed to mapping Physical Layer Pipes (PLPs) with the service_id and with components of a service through the Program Map Table (PMT). A descriptor may be defined for this purpose. In accordance with one or more embodiments, a PLP_identifier_descriptor may contain an identifier for a physical layer pipe (PLP_id). In addition, several other PLP related parameters may be carried within the PLP_identifier_descriptor, instead of carrying the parameters in OSI Layer 1. The PLP_identifier_descriptor may be carried in several different tables, including, but not limited to, a Program Map Table (PMT). The PLP_identifier_descriptor may include a physical layer pipe identifier and, optionally, parameters for modulation, code rate, and FEC block type. A receiver, in accordance with embodiments, may be able to access the actual service content based on a combination of the L1 signalling information, legacy PSI/SI information, and the signalling information set forth in the PLP_identifier_descriptor. | 04-09-2009 |
20090097446 | METHOD AND SYSTEM TO GUARANTEE SERVICE RECEPTION WITHIN BROADCAST SYSTEM - A system and method is provided for ensuring that time for tuning to another RF channel between two TF frames in TF slicing exists while reception with a single hopping-tuner is enabled, and reception for terminals can be guaranteed when transmitting and receiving common services. An additional time for tuning is introduced for TF-sliced services, where the time for tuning can be inserted either before of after the P | 04-16-2009 |
20090103649 | Digital Broadcast Signaling Metadata - Embodiments are directed to transmitting L1 pre-signaling information with predetermined modulation and code rate such that L1 pre-signaling information can be received without preliminary knowledge on the network. L1 pre-signaling information makes it possible to receive the L1 signaling information, data link layer information, and notification data that may have configurable code rates and modulation. Therefore, L1 pre-signaling information can be thought of as signaling metadata (i.e., information about other signaling information). L1 signaling is divided into pre-signaling and signaling parts. The pre-signaling part includes parameters used for receiving the L1 signaling information. L1 pre-signaling signaling enables the receiver to receive the signaling itself (L1 signaling and data link layer information) by informing the receiver about the type of modulation, coding, and the like, used to transmit the L1 signaling, data link layer, and notification information. | 04-23-2009 |
20090113471 | METHOD AND APPARATUS FOR SIGNALING UPDATES TO NOTIFICATION SESSION IN IP DATACAST - Systems and methods of signaling changes and updates associated with the default notification channels in a non-time sliced way are provided. A default notification channel event is signaled to a terminal. The signaling includes a reference to the relevant default notification channel, a timestamp, and/or a version number/counter. A comparison is made between a stored timestamp and/or version number/counter with the timestamp and/or version number/counter indicated in the signaling. A more recent timestamp and/or version number/counter prompts the terminal to tune in to the default notification channel to process the default notification channel event. The signaling can be performed using Program Specific Information/Service Information (PSI/SI), which is non-time-sliced and is received by all terminals. Additionally, the PSI/SI signaling is effectuated by creating descriptors in existing notification/network information tables and/or by creating a dedicated notification signaling table. | 04-30-2009 |
20090129302 | SYSTEM AND METHOD FOR IMPLEMENTING OPTIMIZED MULTIPLEXING AND POWER SAVING IN A BROADCAST NETWORK - A system and method for implementing optimized multiplexing and power saving in a broadcast/multicast network. According to various embodiments, frame and slot structures are designed in such a way so as to adapt based upon the bit rate variation of the input stream, while at the same time not compromising the receiver's power consumption. | 05-21-2009 |
20090187949 | Mapping of Network Information Between Data Link and Physical Layer - Aspects of the invention are directed to a cell-frequency-link descriptor configured to map network-specific parameters with time frequency slicing (TFS) information in a digital video broadcast system. The cell-frequency-link descriptor may include fields that provide a mapping between a cell identifier, a TFS group identifier, a bandwidth, a guard interval, a transmission mode, and a frequency. The fields may provide a mapping between cells, frequencies, TFS groups, related guard intervals, bandwidths, and transmission modes for multiple cells within the digital video broadcast system. The fields may include: a cell identifier field, a TFS-group identifier field, a bandwidth field, a guard interval field, a transmission mode field, a frequency field, a cell identifier extension field, and a transposer frequency field. | 07-23-2009 |
20090203326 | DIGITAL BROADCAST RECEIVER CAPACITY SIGNALLING METADATA - Embodiments are directed to transmitting receiver-capacity-signalling data that specifies a plurality of receiver capacities to be used for receiving a service. The signalled receiver capacities may include: a type of time interleaver being used and a minimum burst interval between two consequent bursts. The signaled receiver capacities may also specify: how often a physical layer pipe appears in frames, and/or a number of a frame in which a physical layer pipe appears for a first time during a super frame. Embodiments are directed to receiving the receiver-capacity-signalling data and if, based on the received receiver-capacity-signalling data, receiver capacity is sufficient for one or more selected services, performing service discovery and decoding the one or more services. Otherwise, decoding the one or more services may not be performed. | 08-13-2009 |
20090222855 | Method and apparatuses for hierarchical transmission/reception in digital broadcast - In accordance with various aspects of the invention, there is being provided a method and apparatus for transmitting, and a method and apparatus for receiving a digital broadcast signal including a hierarchical modulation having a high priority stream and a low priority stream. The content to be received or transmitted in encoded into two stream so that a first stream is configured to be transmitted or received with the high priority stream, and a second stream to be transmitted/received with the low priority stream is configured to contain additional information for increasing the bitrate of the first stream. | 09-03-2009 |
20100169921 | Method and System for Providing Quick Service Access - Provided are apparatuses and methods for transmitting and receiving quick access services. For example, a mobile terminal may receive a data stream containing a quick access service of a particular type. The quick access service may have a fixed Packet Identification (PID) and/or fixed IP address. The fixed PID and/or fixed IP addressed may be associated with a quick access service based on the particular type of the quick access service. In another example, a mobile terminal and a user interface on a mobile terminal may provide a menu for selection of an access mode for accessing the quick access service. Also, a quick access service may be selected based on the type of the quick access service. | 07-01-2010 |
20100195633 | MAPPING SERVICE COMPONENTS IN A BROADCAST ENVIRONMENT - Services and service components in a broadcast network may be mapped to disparate physical layer transmission channels (PLPs) using logical layer pipes (LLPs). The use of LLPs allows different service components of a single service to be mapped to physical layer transmission channels (PLPs). Accordingly, service components may be shared among different services. Additionally or alternatively, different functions (e.g., different error detection or correction protocols) may be applied to each service components of a service. A receiver may identify services, service components and corresponding PLPs based on LLP identifiers. The receiver may then access and receive desired services and service components through the identified PLPs. | 08-05-2010 |
20100290560 | Digital Broadcast Service Discovery Correlation - Aspects of the invention are directed to service and channel discovery in a digital broadcast network. A pilot synchronization symbol, which has known characteristics, is included as a first symbol of digital broadcast frames. The pilot symbol, which can be decoded without having to resort to trial and error methods, contains parameters for the rest of the signal. In another aspect of the invention, at least two pilot symbols may be defined and used at the beginning of each frame. The at least two pilot symbols P1 and P2 may enable fast channel search and service discovery within the frame. Signaling may be realized as a combination of L1 and L2 signaling. | 11-18-2010 |
20100322355 | METHODS AND APPARATUS FOR SIGNALING OFFSETS AND CHANGES IN DIGITAL BROADCAST NETWORKS - Systems and methods are provided for receivers of digital broadband broadcast signals to determine a time of delivery and a version of a particular signaling table. The receiver is able to determine whether an update of the signaling table is needed based on factors such as whether the update applies (e.g., a DVB-H specific change for a mobile terminal in a DVB-H network). The receiver may power down while awaiting delivery of the signaling table (or utilize the radio for other purposes), powering back up in time to receive the signaling table. | 12-23-2010 |
20110055887 | Tunneling and Signaling of Content in Legacy Formats - Broadcast services and other transmissions may conform to multiple types of protocols. Accordingly, a broadcast system may tunnel broadcasts or transmissions of a first protocol in a transport stream conforming to a second protocol. Each of the tunneled streams may be multicast together and may correspond to a separate and different physical layer pipe. The types of protocols and physical layer pipes carried in the transport stream may be defined in a pre-signaling section and/or post-signaling section of the transport stream. Common physical layer pipes may be generated and included in the transport stream to carry information and data common to multiple broadcast services or transmissions such as program specific information or service information. | 03-03-2011 |
20110072469 | Addressing Fringe Areas in Broadcast Networks - Methods and systems for addressing fringe areas within a broadcast network are described. At least one broadcast stream may be transmitted at a broadcast network A determination may be made as to whether a fringe area exists in the broadcast network. Information of the fringe area may be provided to a receiver in at least one signaling section associated to the at least one broadcast stream. A fringe area may occur within a single transmitter coverage area or cell of the broadcast network or over a plurality of different transmitter coverage areas or cells within the broadcast network. The fringe areas may be represented by one or more generally elliptically shaped regions. | 03-24-2011 |
20110194492 | Service Discovery Mechanism in Broadcast Telecommunication Network - Aspects of the invention are directed to service discovery in a digital broadcast network. A service discovery descriptor, which may be electronic service guide-provider and cell specific, provides mapping between a service identifier, a logical channel identifier, and a physical channel, which may be characterized by a frame identifier and a slot identifier, that is, each physical channel may have one or more slots within one or more frames. A neighboring service discovery descriptor provides mapping for the service available within neighboring cells. Aspects of the invention are directed to an encapsulation protocol that encapsulates variable length data, including, but not limited to, the service discovery descriptor and the neighboring service discovery descriptor, into fixed length data stream packets. | 08-11-2011 |