Abstract:
A terrestrial digital video broadcast (DVB-T) network comprises a content provider 2 and first to third transmitters 3 to 5. Each transmitter may transmit more than one signal , different signals having different frequencies, multiplexes and the like and relating to different network types. An integrated receiver/decoder (IRD) 6 is mobile in the area around transmitters 3 to 5. As well as transmitting service information as part of a network information table on a data layer, the transmitters 3 to 5 provide in their output signals transmitter parameter information as TPS data on a physical layer. This TPS information includes one bit identifying the type of the network to which the signal relates and information identifying whether or not the signal contains time-sliced data streams. This information is used by the IRD 6 both in signal scan, or initialising the IRD with parameters needed for OSI layers 1 to 2 service discovery, and for deselecting signals as handover candidates. Since the transmission parameter information is transmitted more frequently and in a lower OSI layer than the network information table, the IRD 6 can more efficiently make decisions as to whether or not a signal is suitable for handover, or is otherwise a signal of interest.
Abstract:
Provided are apparatuses and methods for detecting neighboring cells in a communication network based on Transmission Parameter Signaling (TPS) bits received in a signaling frame. In one example, a signaling frame contains a field of TPS bits that indicate a type of the signaling frame. The type of the signaling frame may indicate the information carried in the signaling frame as information of a current cell or a neighboring cell. The signaling frame may further include information from a neighboring cell in the same network or a different network as the current cell. The signaling frame may further be arranged in a superframe in which the a plurality of frames are transmitted to a receiver in a certain sequence. Each frame in a superframe or a sequence of frames may include a parameter for defining the location of the frame.
Abstract:
Provided are apparatuses and methods for transmitting and receiving a service discovery section (SDS) associated with a service. In one example, the SDS corresponds to a channel identifier and contains mapping information. The mapping information may map the channel identifier to a packet identifier for the service. In addition, the mapping information may contain mapping information for IP addresses corresponding to the channel identifier, information identifying the network for transmission, a cell in which data is transmitted or priority information for the data.
Abstract:
Provided are apparatuses and methods for identifying unused bandwidth in portions of a time slice frame that are allocated to carrying elementary service burst data and related overhead data, and using that unused bandwidth for the transmission of additional data. The unused portions may be aggregated and subdivided into unused time slice frames, which may be further subdivided into additional channels for use by different services.
Abstract:
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.
Abstract:
Methods and system for transmitting a DVB-H network ID in transmission parameter signaling (TPS) data are described. A sixteen bit DVB-H network ID may be divided into four four-bit portions, and each four-bit portion may be included in an orthogonal frequency division multiplex (OFDM) TPS frame transmitted by the DVB-H network. Because each OFDM TPS frame also includes a frame order of that frame within its corresponding super-frame, a receiver of the TPS data can reassemble the network ID by ordering the four received portions according to the frame order of the respective OFDM TPS frames in which they were received. The sixteen bit DVB-H network ID may alternatively be divided into two eight-bit portions, and each eight-bit portion may be included in the cell_ID bits of two frames of a super-frame.
Abstract:
Provided are apparatuses and methods for detecting neighboring cells in a communication network based on Transmission Parameter Signaling (TPS) bits received in a signaling frame. In one example, a signaling frame contains a field of TPS bits that indicate a type of the signaling frame. The type of the signaling frame may indicate the information carried in the signaling frame as information of a current cell or a neighboring cell. The signaling frame may further include information from a neighboring cell in the same network or a different network as the current cell. The signaling frame may further be arranged in a superframe in which the a plurality of frames are transmitted to a receiver in a certain sequence. Each frame in a superframe or a sequence of frames may include a parameter for defining the location of the frame.