US20200336235A1 - Time-multiplexed spectrum sharing - Google Patents
Time-multiplexed spectrum sharing Download PDFInfo
- Publication number
- US20200336235A1 US20200336235A1 US16/090,047 US201716090047A US2020336235A1 US 20200336235 A1 US20200336235 A1 US 20200336235A1 US 201716090047 A US201716090047 A US 201716090047A US 2020336235 A1 US2020336235 A1 US 2020336235A1
- Authority
- US
- United States
- Prior art keywords
- content
- region
- frame
- broadcaster
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0647—Synchronisation among TDM nodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/02—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information
- H04H60/07—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information characterised by processes or methods for the generation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
- H04H20/30—Arrangements for simultaneous broadcast of plural pieces of information by a single channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
- H04H20/33—Arrangements for simultaneous broadcast of plural pieces of information by plural channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/42—Arrangements for resource management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/71—Wireless systems
- H04H20/72—Wireless systems of terrestrial networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/10—Arrangements for reducing cross-talk between channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1694—Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
Definitions
- the present invention relates to RF communication systems and is particularly directed to systems and methods for sharing a broadcast channel among a plurality of broadcasters.
- Time-division multiplexing is a method of transmitting and receiving independent signals over a common signal path by means of synchronized switches at each end of the transmission line so that each signal appears on the line only a fraction of time in an alternating pattern.
- the time domain is divided into several recurrent time slots of fixed length, one for each subchannel.
- a sample byte or data block of first subchannel is transmitted during a first time slot, a second subchannel is transmitted during a second time slot, and so forth.
- One TDM frame consists of one time slot per subchannel plus a synchronization channel and, optionally, an error correction channel. After the all of the subchannels, error correction, and synchronization, the cycle starts all over again with a new frame, starting with a second sample, byte or data block from the first subchannel.
- a system including a first broadcaster configured to broadcast a first content on a channel over an associated first region of signal coverage.
- a second broadcaster is configured to broadcast a second content, different from the first content, on the channel over an associated second region of signal coverage that overlaps the first region of signal coverage to form a region of overlap.
- a gateway device is configured to schedule transmission times for the first and second broadcasters, such that a receiver tuned to the channel receives the first and second content as a time divisional multiplexed signal.
- a method for providing content to a receiver.
- a first frame of content is broadcast on a channel over an associated first region of signal coverage from a first location.
- a second frame of content is broadcast on the channel over an associated second region of signal coverage from a second location.
- the second region of signal coverage overlaps the first region of signal coverage to form a region of overlap.
- Transmission times are scheduled for the first and second frames, such that a receiver tuned to the channel receives the first and second frames as a time divisional multiplexed signal.
- a system for providing content to a receiver.
- a first broadcaster is configured to broadcast, from a first location, a first frame of content on a channel over an associated first region of signal coverage.
- a second broadcaster is configured to broadcast, from a second location, a second frame of content, different from the first frame, on the channel over an associated second region of signal coverage that overlaps the first region of signal coverage to form a region of overlap.
- a gateway device includes multiplexing logic configured to ensure that the first broadcaster and second broadcaster use complimentary parameters for broadcasting their respective content, such the first frame of content does not overlap the second frame of content.
- FIG. 1 illustrates one example of a spectrum sharing arrangement among a plurality of broadcasters
- FIG. 2 illustrates a simplified example of a frame structure for the transmission in accordance with an aspect of the present invention
- FIG. 3 illustrates a method for providing content to a receiver
- FIG. 4 is a schematic block diagram illustrating an exemplary system of hardware components capable of implementing examples of the systems and methods disclosed in FIGS. 1-3 .
- FIG. 1 illustrates one example of a spectrum sharing arrangement among a plurality of broadcasters.
- FIG. 1 illustrates a situation in which multiple broadcasters are providing signal coverage over respective regions 12 and 14 having a significant region of overlap 16 at a same frequency band. It will be appreciated that, in a standard system, the region of overlap 16 would experience significant interference between the broadcast signals. Accordingly, a receiver 22 located within the region of overlap 16 would be unlikely to receive a usable signal, particularly if the broadcasters were broadcasting different content.
- a plurality of broadcasters 32 and 34 share at least an overlap in their respective service regions. It will be appreciated that, by a broadcaster, it is meant a system capable of conditioning and transmitting a signal, carrying content, such as video, audio, and/or data.
- a given broadcaster can be associated with one or more than one transmitters for carrying the content.
- Each broadcaster 32 and 34 may be providing a different content to its associated service region 32 and 34 , such that the region of overlap can receive multiple, different content signals.
- the broadcasters 32 and 34 can share the channel via a time multiplexing arrangement, such that they transmit on the same allocated channel, but at different times.
- each broadcaster 32 and 34 can broadcast its associated content within a single allocated time slot, such that within the region of overlap, the content from the various broadcasters is received in a time-multiplexed fashion.
- a receiver 22 located within the region of overlap can include appropriate logic for extracting the time-multiplexed content into the individual content streams, such that all broadcasted content can be available at a device associated with the receiver.
- each individual broadcaster would be assigned a periodic time slot during which they transmit their content.
- the broadcaster will output no signal during the time slots belonging to other broadcasters.
- each frame has a coded header which identifies the type of frame.
- a consumer receiver can tune to content associated with a specific broadcaster by searching for the correct header.
- a gateway device 40 can buffer the broadcast content and schedule the frame transmission times for individual transmitters.
- a user can enter frame durations, percent usage, and other parameters to the gateway device 40 to allocate the time slots among the various broadcasters.
- the gateway device 40 can include multiplexing logic 42 configured to ensure that gateways used for transmitters sharing an allocated channel use complementary parameters, such that the time slots align. It will be appreciated that, while the above discussion focuses on broadcast, a broadcaster with rights to a spectrum allocation in a region could also use this method to share spectrum with other entities which are not traditional broadcasters. A broadcaster could also broadcast other content in same timeslot in different parts of his coverage area.
- the gateway device 40 can provide a digital signal, including synchronization data, to the plurality of broadcasters 32 and 34 to allow the transmitters 32 and 34 to operate synchronously. It will be appreciated that the digital signal from the gateway device 40 can also contain content to be broadcast by one or more of the plurality of broadcasters 32 and 34 , but, for the purpose of example, it is assumed that at least one broadcaster is broadcasting content that is not provided via the digital signal.
- the synchronization data can include a symbol indicating the beginning of a frame, such as a P1 symbol in the Digital Video Broadcasting—Second Generation Terrestial (DVB-T2) protocol.
- the cadence signal can be formed by inverting the value at the MPEG-2 data packet synchronization word at the beginning of every other field (e.g., at the beginning of each frame). This allows the various transmitters to coordinate the beginning of each data frame according to an associated time reference (e.g., a GPS receiver).
- the synchronization data can instead utilize a frame-level time stamp, inserted in place of every other MPEG-2 synchronization word that instructs the transmitters 32 and 34 as to when the frame should be transmitted and provides any other operation necessary for synchronization.
- respective transmitters associated with each broadcaster can be configured for increased efficiency during intermittent operation.
- the transmitter can be configured such that one of the optimization states of the amplifier is a no signal state.
- the amplifier can utilize a dynamic power source at one or more associated power amplifiers, allowing the system to enter a substantially dormant state when the transmitter is not broadcasting. To this end, the efficiency of the transmitter can be significantly increased.
- Pending spectrum repack will incentivize individual broadcasters to share single allocated channels with other broadcasters in a region. While individual broadcasters could combine their content into a single multiplex that is transmitted from a single transmitter, the illustrated system allows the individual broadcasters to keep their own multiplex and transmitter, with the accompanying flexibility this allows in providing content. Accordingly, a more efficient use of the available spectrum can be achieved.
- FIG. 2 illustrates a simplified example of a frame structure 100 for the transmission in accordance with an aspect of the present invention.
- the broadcasters utilize the entirety of a given superframe 110 , 120 , and 130 . It will be appreciated, however, that the broadcasters can instead use a portion of a larger frame, for example, a future extension frame in a hybrid broadcasting arrangement.
- the time slots 111 , 112 , 121 , 122 , 131 , and 132 within each superframe 110 , 120 , and 130 are of equal length and maintain a standard order of broadcast within each superframe. While this arrangement of frames is not necessary for the operation of the system, it will be appreciated that by assigning the time slots in this order, it is possible to reduce the necessary frequency of headers or timing information provided to a receiver associated with the system.
- FIG. 3 a methodology in accordance with various aspects of the present invention will be better appreciated with reference to FIG. 3 . While, for purposes of simplicity of explanation, the methodology of FIG. 3 is shown and described as executing serially, it is to be understood and appreciated that the present invention is not limited by the illustrated order, as some aspects could, in accordance with the present invention, occur in different orders and/or concurrently with other aspects from that shown and described herein. Moreover, not all illustrated features may be required to implement a methodology in accordance with an aspect the present invention.
- FIG. 3 illustrates a method 150 for providing content to a receiver.
- a first frame of content is broadcast, from a first location, on a channel over an associated first region of signal coverage.
- the first frame includes a coded header that can be used by a receiver to identify content from the first location.
- the frame can be located within a future extension frame of a broadcasting standard, such as the digital video broadcasting, terrestrial (DVB-T2) standard.
- DVD-T2 digital video broadcasting, terrestrial
- a second frame of content is broadcast, from a second location, on the channel over an associated second region of signal coverage that overlaps the first region of signal coverage to form a region of overlap.
- the second frame includes a coded header that can be used by a receiver to identify content from the second location. It will be appreciated that, since the two broadcasters will be broadcasting different content, it can be desirable to broadcast over similar areas, such that the first region of signal coverage can be substantially coextensive with the second region of signal coverage.
- the method could further include broadcasting, from a third location, a third frame of content, different from each of the first and the second frame, on the channel over an associated third region of signal coverage that overlaps the region of overlap. And to provide diversity of content to the receiver, the first region of signal coverage, the second region of signal coverage, and the third region of signal coverage can be substantially coextensive.
- transmission times for the first and second frames are scheduled within the superframe, such that a receiver tuned to the channel receives the first and second frames as a time divisional multiplexed signal.
- a user is allowed to configure parameters associated with a superframe containing the two frames of content, and more specifically the scheduled transmission times, via an associated user interface. For example, the user can be allowed to select a length of each of the first frame and the second frame or a percent of the superframe used by each of the first location and the second location.
- the illustrated method 150 allows broadcaster to keep control of their content multiplex, modulation and transmission but share a single allocated channel with other broadcasters in same geographic region.
- Other television systems require cooperation of content providers to combine transport streams into single multiple for broadcast.
- cellular TDMA systems are lower power and don't cover as large a geographic area per transmitter.
- FIG. 4 is a schematic block diagram illustrating an exemplary system 200 of hardware components capable of implementing examples of the systems and methods disclosed in FIGS. 1-3 .
- the system 200 can include various systems and subsystems.
- the system 200 can be a personal computer, a laptop computer, a workstation, a computer system, an appliance, an application-specific integrated circuit (ASIC), a server, a server blade center, a server farm, etc.
- ASIC application-specific integrated circuit
- the system 200 can includes a system bus 202 , a processing unit 204 , a system memory 206 , memory devices 208 and 210 , a communication interface 212 (e.g., a network interface), a communication link 214 , a display 216 (e.g., a video screen), and an input device 218 (e.g., a keyboard and/or a mouse).
- the system bus 202 can be in communication with the processing unit 204 and the system memory 206 .
- the additional memory devices 208 and 210 such as a hard disk drive, server, stand-alone database, or other non-volatile memory, can also be in communication with the system bus 202 .
- the system bus 202 interconnects the processing unit 204 , the memory devices 206 - 210 , the communication interface 212 , the display 216 , and the input device 218 .
- the system bus 202 also interconnects an additional port (not shown), such as a universal serial bus (USB) port.
- USB universal serial bus
- the processing unit 204 can be a computing device and can include an application-specific integrated circuit (ASIC).
- the processing unit 204 executes a set of instructions to implement the operations of examples disclosed herein.
- the processing unit can include a processing core.
- the additional memory devices 206 , 208 and 210 can store data, programs, instructions, database queries in text or compiled form, and any other information that can be needed to operate a computer.
- the memories 206 , 208 and 210 can be implemented as computer-readable media (integrated or removable) such as a memory card, disk drive, compact disk (CD), or server accessible over a network.
- the memories 206 , 208 and 210 can comprise text, images, video, and/or audio, portions of which can be available in formats comprehensible to human beings.
- the system 200 can access an external data source or query source through the communication interface 212 , which can communicate with the system bus 202 and the communication link 214 .
- the system 200 can be used to implement one or more parts of a broadcast system in accordance with the present invention, such as the multiplexing logic 42 .
- Computer executable logic for implementing the broadcast system resides on one or more of the system memory 206 , and the memory devices 208 , 210 in accordance with certain examples.
- the processing unit 204 executes one or more computer executable instructions originating from the system memory 206 and the memory devices 208 and 210 .
- the term “computer readable medium” as used herein refers to a medium that participates in providing instructions to the processing unit 204 for execution, and can, in practice, refer to multiple, operatively connected apparatuses for storing machine executable instructions.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Transmitters (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
Description
- This application claims priority to U.S. Provisional Patent Application Ser. No. 62/314,643, filed Mar. 29, 2016. The entirety of this application is hereby incorporated by reference.
- The present invention relates to RF communication systems and is particularly directed to systems and methods for sharing a broadcast channel among a plurality of broadcasters.
- Time-division multiplexing (TDM) is a method of transmitting and receiving independent signals over a common signal path by means of synchronized switches at each end of the transmission line so that each signal appears on the line only a fraction of time in an alternating pattern. The time domain is divided into several recurrent time slots of fixed length, one for each subchannel. A sample byte or data block of first subchannel is transmitted during a first time slot, a second subchannel is transmitted during a second time slot, and so forth. One TDM frame consists of one time slot per subchannel plus a synchronization channel and, optionally, an error correction channel. After the all of the subchannels, error correction, and synchronization, the cycle starts all over again with a new frame, starting with a second sample, byte or data block from the first subchannel.
- In accordance with an aspect of the present invention, a system is provided including a first broadcaster configured to broadcast a first content on a channel over an associated first region of signal coverage. A second broadcaster is configured to broadcast a second content, different from the first content, on the channel over an associated second region of signal coverage that overlaps the first region of signal coverage to form a region of overlap. A gateway device is configured to schedule transmission times for the first and second broadcasters, such that a receiver tuned to the channel receives the first and second content as a time divisional multiplexed signal.
- In accordance with another aspect of the present invention, a method is provided for providing content to a receiver. A first frame of content is broadcast on a channel over an associated first region of signal coverage from a first location. A second frame of content is broadcast on the channel over an associated second region of signal coverage from a second location. The second region of signal coverage overlaps the first region of signal coverage to form a region of overlap. Transmission times are scheduled for the first and second frames, such that a receiver tuned to the channel receives the first and second frames as a time divisional multiplexed signal.
- In accordance with yet another aspect of the present invention, a system is provided for providing content to a receiver. A first broadcaster is configured to broadcast, from a first location, a first frame of content on a channel over an associated first region of signal coverage. A second broadcaster is configured to broadcast, from a second location, a second frame of content, different from the first frame, on the channel over an associated second region of signal coverage that overlaps the first region of signal coverage to form a region of overlap. A gateway device includes multiplexing logic configured to ensure that the first broadcaster and second broadcaster use complimentary parameters for broadcasting their respective content, such the first frame of content does not overlap the second frame of content.
- The foregoing and other features of the present invention will become apparent to those skilled in the art to which the present invention relates upon consideration of the following description of the invention with reference to the accompanying drawings, wherein:
-
FIG. 1 illustrates one example of a spectrum sharing arrangement among a plurality of broadcasters; -
FIG. 2 illustrates a simplified example of a frame structure for the transmission in accordance with an aspect of the present invention; -
FIG. 3 illustrates a method for providing content to a receiver; and -
FIG. 4 is a schematic block diagram illustrating an exemplary system of hardware components capable of implementing examples of the systems and methods disclosed inFIGS. 1-3 . -
FIG. 1 illustrates one example of a spectrum sharing arrangement among a plurality of broadcasters.FIG. 1 illustrates a situation in which multiple broadcasters are providing signal coverage overrespective regions overlap 16 at a same frequency band. It will be appreciated that, in a standard system, the region ofoverlap 16 would experience significant interference between the broadcast signals. Accordingly, areceiver 22 located within the region ofoverlap 16 would be unlikely to receive a usable signal, particularly if the broadcasters were broadcasting different content. - A plurality of
broadcasters broadcaster service region - In the spectrum sharing arrangement utilized in the system of
FIG. 1 , however, thebroadcasters broadcaster receiver 22 located within the region of overlap can include appropriate logic for extracting the time-multiplexed content into the individual content streams, such that all broadcasted content can be available at a device associated with the receiver. - To this end, each individual broadcaster would be assigned a periodic time slot during which they transmit their content. The broadcaster will output no signal during the time slots belonging to other broadcasters. In one implementation, each frame has a coded header which identifies the type of frame. A consumer receiver can tune to content associated with a specific broadcaster by searching for the correct header.
- A
gateway device 40 can buffer the broadcast content and schedule the frame transmission times for individual transmitters. A user can enter frame durations, percent usage, and other parameters to thegateway device 40 to allocate the time slots among the various broadcasters. Thegateway device 40 can includemultiplexing logic 42 configured to ensure that gateways used for transmitters sharing an allocated channel use complementary parameters, such that the time slots align. It will be appreciated that, while the above discussion focuses on broadcast, a broadcaster with rights to a spectrum allocation in a region could also use this method to share spectrum with other entities which are not traditional broadcasters. A broadcaster could also broadcast other content in same timeslot in different parts of his coverage area. - To ensure that the content from the individual signals is provided in the appropriate time slot, the
gateway device 40 can provide a digital signal, including synchronization data, to the plurality ofbroadcasters transmitters gateway device 40 can also contain content to be broadcast by one or more of the plurality ofbroadcasters - In one example, the synchronization data can include a symbol indicating the beginning of a frame, such as a P1 symbol in the Digital Video Broadcasting—Second Generation Terrestial (DVB-T2) protocol. In one example utilizing MPEG-2 data, the cadence signal can be formed by inverting the value at the MPEG-2 data packet synchronization word at the beginning of every other field (e.g., at the beginning of each frame). This allows the various transmitters to coordinate the beginning of each data frame according to an associated time reference (e.g., a GPS receiver). In an alterative embodiment, the synchronization data can instead utilize a frame-level time stamp, inserted in place of every other MPEG-2 synchronization word that instructs the
transmitters - In one implementation, respective transmitters associated with each broadcaster can be configured for increased efficiency during intermittent operation. For example, the transmitter can be configured such that one of the optimization states of the amplifier is a no signal state. In one example, the amplifier can utilize a dynamic power source at one or more associated power amplifiers, allowing the system to enter a substantially dormant state when the transmitter is not broadcasting. To this end, the efficiency of the transmitter can be significantly increased.
- Pending spectrum repack will incentivize individual broadcasters to share single allocated channels with other broadcasters in a region. While individual broadcasters could combine their content into a single multiplex that is transmitted from a single transmitter, the illustrated system allows the individual broadcasters to keep their own multiplex and transmitter, with the accompanying flexibility this allows in providing content. Accordingly, a more efficient use of the available spectrum can be achieved.
-
FIG. 2 illustrates a simplified example of aframe structure 100 for the transmission in accordance with an aspect of the present invention. In the illustrated implementation, only two broadcasters are illustrated, although it will be appreciated that the systems and methods described herein can be used with more than two broadcasters. Further, in this example 100, the broadcasters utilize the entirety of a givensuperframe - In the illustrated implementation, the
time slots superframe - In view of the foregoing structural and functional features described above, a methodology in accordance with various aspects of the present invention will be better appreciated with reference to
FIG. 3 . While, for purposes of simplicity of explanation, the methodology ofFIG. 3 is shown and described as executing serially, it is to be understood and appreciated that the present invention is not limited by the illustrated order, as some aspects could, in accordance with the present invention, occur in different orders and/or concurrently with other aspects from that shown and described herein. Moreover, not all illustrated features may be required to implement a methodology in accordance with an aspect the present invention. -
FIG. 3 illustrates amethod 150 for providing content to a receiver. At 152, a first frame of content is broadcast, from a first location, on a channel over an associated first region of signal coverage. In one example, the first frame includes a coded header that can be used by a receiver to identify content from the first location. Alternatively or additionally, the frame can be located within a future extension frame of a broadcasting standard, such as the digital video broadcasting, terrestrial (DVB-T2) standard. - At 154, a second frame of content is broadcast, from a second location, on the channel over an associated second region of signal coverage that overlaps the first region of signal coverage to form a region of overlap. In one example, the second frame includes a coded header that can be used by a receiver to identify content from the second location. It will be appreciated that, since the two broadcasters will be broadcasting different content, it can be desirable to broadcast over similar areas, such that the first region of signal coverage can be substantially coextensive with the second region of signal coverage.
- Further, more than two broadcasters can share the channel, with the total number constrained only by the available bandwidth associated with the channel and the specific application. For example, the method could further include broadcasting, from a third location, a third frame of content, different from each of the first and the second frame, on the channel over an associated third region of signal coverage that overlaps the region of overlap. And to provide diversity of content to the receiver, the first region of signal coverage, the second region of signal coverage, and the third region of signal coverage can be substantially coextensive.
- At 156, transmission times for the first and second frames are scheduled within the superframe, such that a receiver tuned to the channel receives the first and second frames as a time divisional multiplexed signal. In one implementation, a user is allowed to configure parameters associated with a superframe containing the two frames of content, and more specifically the scheduled transmission times, via an associated user interface. For example, the user can be allowed to select a length of each of the first frame and the second frame or a percent of the superframe used by each of the first location and the second location.
- The illustrated
method 150 allows broadcaster to keep control of their content multiplex, modulation and transmission but share a single allocated channel with other broadcasters in same geographic region. Other television systems require cooperation of content providers to combine transport streams into single multiple for broadcast. Further, cellular TDMA systems are lower power and don't cover as large a geographic area per transmitter. -
FIG. 4 is a schematic block diagram illustrating anexemplary system 200 of hardware components capable of implementing examples of the systems and methods disclosed inFIGS. 1-3 . Thesystem 200 can include various systems and subsystems. Thesystem 200 can be a personal computer, a laptop computer, a workstation, a computer system, an appliance, an application-specific integrated circuit (ASIC), a server, a server blade center, a server farm, etc. - The
system 200 can includes asystem bus 202, aprocessing unit 204, asystem memory 206,memory devices communication link 214, a display 216 (e.g., a video screen), and an input device 218 (e.g., a keyboard and/or a mouse). Thesystem bus 202 can be in communication with theprocessing unit 204 and thesystem memory 206. Theadditional memory devices system bus 202. Thesystem bus 202 interconnects theprocessing unit 204, the memory devices 206-210, thecommunication interface 212, thedisplay 216, and theinput device 218. In some examples, thesystem bus 202 also interconnects an additional port (not shown), such as a universal serial bus (USB) port. - The
processing unit 204 can be a computing device and can include an application-specific integrated circuit (ASIC). Theprocessing unit 204 executes a set of instructions to implement the operations of examples disclosed herein. The processing unit can include a processing core. - The
additional memory devices memories memories system 200 can access an external data source or query source through thecommunication interface 212, which can communicate with thesystem bus 202 and thecommunication link 214. - In operation, the
system 200 can be used to implement one or more parts of a broadcast system in accordance with the present invention, such as the multiplexinglogic 42. Computer executable logic for implementing the broadcast system resides on one or more of thesystem memory 206, and thememory devices processing unit 204 executes one or more computer executable instructions originating from thesystem memory 206 and thememory devices processing unit 204 for execution, and can, in practice, refer to multiple, operatively connected apparatuses for storing machine executable instructions. - From the above description of the invention, those skilled in the art will perceive improvements, changes and modifications in the invention. Such improvements, changes and modifications within the skill of the art are intended to be covered by the appended claims.
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/090,047 US20200336235A1 (en) | 2016-03-29 | 2017-03-29 | Time-multiplexed spectrum sharing |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662314643P | 2016-03-29 | 2016-03-29 | |
US16/090,047 US20200336235A1 (en) | 2016-03-29 | 2017-03-29 | Time-multiplexed spectrum sharing |
PCT/US2017/024743 WO2017172913A1 (en) | 2016-03-29 | 2017-03-29 | Time-multiplexed spectrum sharing |
Publications (1)
Publication Number | Publication Date |
---|---|
US20200336235A1 true US20200336235A1 (en) | 2020-10-22 |
Family
ID=59965156
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/090,047 Abandoned US20200336235A1 (en) | 2016-03-29 | 2017-03-29 | Time-multiplexed spectrum sharing |
US16/090,018 Active US10666369B2 (en) | 2016-03-29 | 2017-03-29 | Adaptive processing in time-multiplexed signals |
US16/882,012 Active US11258525B2 (en) | 2016-03-29 | 2020-05-22 | Adaptive processing in time-multiplexed signals |
US17/572,748 Active US11683108B2 (en) | 2016-03-29 | 2022-01-11 | Adaptive processing in time-multiplexed signals |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/090,018 Active US10666369B2 (en) | 2016-03-29 | 2017-03-29 | Adaptive processing in time-multiplexed signals |
US16/882,012 Active US11258525B2 (en) | 2016-03-29 | 2020-05-22 | Adaptive processing in time-multiplexed signals |
US17/572,748 Active US11683108B2 (en) | 2016-03-29 | 2022-01-11 | Adaptive processing in time-multiplexed signals |
Country Status (5)
Country | Link |
---|---|
US (4) | US20200336235A1 (en) |
EP (2) | EP3437217A4 (en) |
KR (2) | KR20180123572A (en) |
BR (2) | BR112018069924A2 (en) |
WO (2) | WO2017172903A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11943630B2 (en) * | 2020-02-21 | 2024-03-26 | Qualcomm Incorporated | Enhancements for multiple radio protocol dynamic spectrum sharing |
EP4303180A1 (en) | 2021-03-02 | 2024-01-10 | Tokuyama Corporation | Hexagonal boron nitride agglomerated particles, hexagonal boron nitride powder, resin composition, and resin sheet |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4059729A (en) * | 1976-06-09 | 1977-11-22 | Martin Marietta Aerospace | Method and system for selectively accessing multiplexed data transmission network for monitoring and testing of the network |
US4313195A (en) * | 1979-04-23 | 1982-01-26 | Sangamo Weston, Inc. | Reduced sample rate data acquisition system |
US5249085A (en) * | 1991-10-07 | 1993-09-28 | The United States Of America As Represented By The Secretary Of The Navy | Recording system using multiplexed inputs to a multichannel recorder |
US7072380B2 (en) * | 1995-06-30 | 2006-07-04 | Interdigital Technology Corporation | Apparatus for initial power control for spread-spectrum communications |
US6477707B1 (en) * | 1998-03-24 | 2002-11-05 | Fantastic Corporation | Method and system for broadcast transmission of media objects |
US6519262B1 (en) * | 1998-06-10 | 2003-02-11 | Trw Inc. | Time division multiplex approach for multiple transmitter broadcasting |
US7593481B2 (en) * | 1998-08-31 | 2009-09-22 | Kamilo Feher | CDMA, W-CDMA, 3rd generation interoperable modem format selectable (MFS) systems with GMSK modulated systems |
TW507428B (en) * | 1999-03-31 | 2002-10-21 | Harris Corp | Method and system for extending broadcast coverage on a single frequency network |
US6975600B1 (en) * | 2000-09-18 | 2005-12-13 | The Directv Group, Inc. | Multimode transmission system using TDMA |
US6775300B2 (en) * | 2002-02-28 | 2004-08-10 | Teknovus, Inc. | Clock distribution in a communications network |
US7844214B2 (en) * | 2002-03-02 | 2010-11-30 | Nokia Corporation | System and method for broadband digital broadcasting |
US8971236B2 (en) * | 2002-04-09 | 2015-03-03 | Alcatel Lucent | System and method for real-time interconnection of elements of a wide area monitoring, measurement or data collection system through a direct digital satellite broadcasting multiplexing system |
US7558296B2 (en) * | 2002-06-26 | 2009-07-07 | Panasonic Corporation | Multiplexer and demultiplexer |
US20050063298A1 (en) | 2003-09-02 | 2005-03-24 | Qualcomm Incorporated | Synchronization in a broadcast OFDM system using time division multiplexed pilots |
US7359357B2 (en) * | 2004-03-18 | 2008-04-15 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting and receiving broadcast data using outer-coding |
US8670363B2 (en) * | 2007-05-30 | 2014-03-11 | Qualcomm Incorporated | Method and apparatus for sending scheduling information for broadcast and multicast services in a cellular communication system |
CN102255718B (en) * | 2011-07-11 | 2013-09-11 | 电信科学技术研究院 | Data transmission method and device for carrier aggregation system |
US9253428B2 (en) * | 2014-05-21 | 2016-02-02 | Arthur Webb Allison, III | Broadcasting system with digital television signals and metadata that modulate respective sets of OFDM carriers |
US10389498B2 (en) * | 2014-08-04 | 2019-08-20 | Lg Electronics Inc. | Signaling method for CoMP operation in wireless communication system and device therefor |
US20160080778A1 (en) * | 2014-09-11 | 2016-03-17 | Gatesair, Inc. | Hybrid modulator utilizing digital domain multiplexing |
-
2017
- 2017-03-29 EP EP17776541.9A patent/EP3437217A4/en not_active Ceased
- 2017-03-29 EP EP17776546.8A patent/EP3437218A4/en not_active Withdrawn
- 2017-03-29 BR BR112018069924A patent/BR112018069924A2/en not_active IP Right Cessation
- 2017-03-29 KR KR1020187031188A patent/KR20180123572A/en not_active Application Discontinuation
- 2017-03-29 KR KR1020187031174A patent/KR102208053B1/en active IP Right Grant
- 2017-03-29 WO PCT/US2017/024732 patent/WO2017172903A1/en active Application Filing
- 2017-03-29 US US16/090,047 patent/US20200336235A1/en not_active Abandoned
- 2017-03-29 WO PCT/US2017/024743 patent/WO2017172913A1/en active Application Filing
- 2017-03-29 US US16/090,018 patent/US10666369B2/en active Active
- 2017-03-29 BR BR112018069925A patent/BR112018069925A2/en not_active IP Right Cessation
-
2020
- 2020-05-22 US US16/882,012 patent/US11258525B2/en active Active
-
2022
- 2022-01-11 US US17/572,748 patent/US11683108B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3437217A4 (en) | 2019-12-11 |
US11683108B2 (en) | 2023-06-20 |
KR20180123572A (en) | 2018-11-16 |
US20220131629A1 (en) | 2022-04-28 |
US20210013979A1 (en) | 2021-01-14 |
EP3437218A4 (en) | 2020-01-01 |
US20190140755A1 (en) | 2019-05-09 |
KR20180123571A (en) | 2018-11-16 |
KR102208053B1 (en) | 2021-01-28 |
EP3437218A1 (en) | 2019-02-06 |
BR112018069925A2 (en) | 2019-02-05 |
WO2017172913A1 (en) | 2017-10-05 |
US10666369B2 (en) | 2020-05-26 |
EP3437217A1 (en) | 2019-02-06 |
BR112018069924A2 (en) | 2019-02-05 |
WO2017172903A1 (en) | 2017-10-05 |
US11258525B2 (en) | 2022-02-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11910200B2 (en) | Broadcast/broadband convergence network | |
US11082173B2 (en) | Systems and methods for OFDM with flexible sub-carrier spacing and symbol duration | |
RU2581623C2 (en) | Device and method for reception and transmission of data streams in wireless system | |
US8780769B2 (en) | Method, apparatus, and system for identifying different frame structures | |
US20100009687A1 (en) | System and method for enabling efficient mbms downlink radio resource re-use for other downlink traffic | |
JP6800980B2 (en) | Data signal transmission in wireless communication systems with reduced end-to-end latency | |
CN109155991A (en) | A kind of resource indicating method, relevant device and system | |
US20200336235A1 (en) | Time-multiplexed spectrum sharing | |
JP6783441B2 (en) | Telegraph split of ALOHA with slot | |
CA2998079C (en) | Transmission device, receiving device, and data processing method | |
JP6901839B2 (en) | High-definition video transmitter, high-definition video receiver and high-definition video transmission / reception system | |
KR102395355B1 (en) | Method for providing ad-hoc broadcasting service based on channel share and apparatus using the same | |
US6842432B2 (en) | Method for allocating channel resources in a distributed control channel system | |
US9906824B2 (en) | Method and device for allocating media data to a superframe and transmitting a superframe in which a time length of media data corresponds to a time length of the superframe in a digital broadcasting system | |
WO2023076266A1 (en) | Quantized transport for importer-exporter audio client in digital radio broadcast | |
KR20170001091A (en) | Modulator interface for ldm-based next generation broadcasting system | |
KR20090029142A (en) | Apparatus and method of packet allocation for time division multiplexing with multiple rf channel |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
AS | Assignment |
Owner name: GATESAIR, INC., OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HALOZAN, SCOTT;REEL/FRAME:054661/0229 Effective date: 20201120 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |
|
AS | Assignment |
Owner name: CITIZENS BANK, N.A., MASSACHUSETTS Free format text: SECURITY INTEREST;ASSIGNORS:PHENIXYA LENDCO II, LLC;GATESAIR, INC.;PHENIXYA LENDCO I, LLC;REEL/FRAME:061039/0484 Effective date: 20220801 |
|
AS | Assignment |
Owner name: GATESAIR, INC., OHIO Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:CITIZENS BANK,N.A.;REEL/FRAME:065117/0891 Effective date: 20230929 |