Techniques for ATSC 3.0 broadcast boundary area management using complete service reception during scan to determine signal quality of frequencies carrying the duplicate service

Patent metadata

Field	Value
Publication number	US-11838680-B2
Application number	US-202117488258-A
Country	US
Kind code	B2
Filing date	Sep 28, 2021
Priority date	Aug 6, 2021
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

Techniques are described for expanding and/or improving the Advanced Television Systems Committee (ATSC) 3.0 television protocol in robustly delivering the next generation broadcast television services. In a boundary region between first and second broadcast stations in which a receiver can pick up signals from both stations, a lower level signaling PLP is used to identify frequencies duplicatively carrying the same service and then higher level PLPs are activated for each duplicate to determine a channel quality metric for identifying the best frequency to receive the service on, which is sent from both stations.

First claim

What is claimed is:

1. In digital television system comprising at least one boundary region in which at least one DTV receiver receives broadcast signals from at least first and second digital television broadcast assemblies, a method, comprising:
using a digital television receiver, enabling a first physical layer pipe (PLP);
scanning a frequency spectrum using the first PLP to render a result;
using the result, identifying at least first and second respective frequencies from the respective first and second digital television broadcast assemblies as carrying a first service; and
using respective second and third PLPs, identifying respective first and second quality metrics associated with the respective first and second frequencies to form a basis for selecting which frequency to tune to for acquiring the first service.

2. The method claim 1 , wherein the digital television receiver comprises an advanced television systems committee (ATSC) 3.0 receiver.

3. The method of claim 1 , comprising automatically tuning to the first or second frequency based on the quality metric of the respective first or second frequency without user intervention.

4. The method of claim 1 , comprising presenting an audibly or visually perceptive message to tune to the first or second frequency based on the quality metric of the respective first or second frequency.

5. The method of claim 1 , wherein the digital TV receiver is a mobile receiver.

6. The method of claim 1 , wherein the first PLP comprises a lower level signaling (LLS) PLP.

7. The method of claim 6 , wherein the second and third PLPs comprise respective service layer signaling (SLS) PLPs.

8. The method of claim 1 , wherein the second and third PLPs are identified using a link mapping table (LMT) acquired by means of the first PLP.

9. A digital television apparatus comprising:
at least one receiver configured to receive digital television from a digital television transmitter system comprising at least first and second broadcast transmitters, the receiver comprising:
at least one processor programmed with instructions to:
scan a frequency spectrum using a lower level signaling (LLS) physical layer pipe (PLP);
use results of the scan by the LLS PLP to identify at least one service duplicated by the first and second broadcast transmitters;
use results of the scan to identify respective service layer signaling (SLS) PLPs to acquire the service from the respective first and second broadcaster transmitters;
use the SLS PLPs to determine respective quality metrics associated with the service from the first and second broadcasters transmitters; and
acquire the service from the first or second broadcast transmitter having a higher quality signal as determined from the SLS PLPs.

10. The digital television apparatus of claim 9 , wherein the digital television receiver comprises an advanced television systems committee (ATSC) 3.0 receiver.

11. The digital television apparatus of claim 9 , wherein the instructions are executable to automatically tune to the first or second broadcast transmitter based on the quality of the respective signal without user intervention.

12. The digital television apparatus of claim 9 , wherein the instructions are executable to present an audibly or visually perceptive message to tune to the first or second broadcast transmitter.

13. The digital television apparatus of claim 9 , wherein the receiver comprises one and only one tuner.

14. The digital television apparatus of claim 9 , wherein the receiver is not a mobile receiver.

15. The digital television apparatus of claim 9 , wherein the use of the results of the scan by the LLS PLP to identify at least one service duplicated by the first and second broadcast transmitters requires no PLPs other than the LLS PLP.

16. A digital television apparatus comprising:
at least one receiver comprising at least one processor programmed with instructions to configure the processor to:
receive from plural digital television broadcasters information from respective frequencies;
use a lower level signaling (LLS) physical layer pipe (PLP) to identify at least one service carried by at least first and second frequencies from respective first and second digital television broadcasters, and to identify at least first and second service layer signaling (SLS) PLPs for acquiring the first and second frequencies;
identify, using the respective first and second SLS PLPs, respective first and second quality metrics of the respective first and second frequencies; and
automatically tune to, or present a message to tune to, the first frequency based at least in part on a relationship between the first and second quality metrics.

17. The digital television apparatus of claim 16 , wherein the digital television receiver comprises an advanced television systems committee (ATSC) 3.0 receiver.

18. The digital television apparatus of claim 16 , wherein identifying at least one service carried by at least first and second frequencies from respective first and second digital television broadcasters comprises scanning a frequency spectrum using the LLS PLP.

19. The digital television apparatus of claim 18 , wherein identifying respective first and second SLS PLPs uses a link mapping table (LMT) acquired by means of the LLS PLP.

20. The digital television apparatus of claim 16 , wherein the receiver is a mobile receiver.

Assignees

• Sony Group Corp

Inventors

• Clift Graham
• Fay Luke
• Candelore Brant
• Goldberg Adam
• Ansfield Fred
• Pineda Loren F

Classifications

• H04B17/309

  Measuring or estimating channel quality parameters · CPC title

• H04N5/50 Primary

  Tuning indicators; Automatic tuning control · CPC title

• H04N17/00

  Diagnosis, testing or measuring for television systems or their details · CPC title

• H04N21/426

  Internal components of the client {; Characteristics thereof} (H04N5/44 takes precedence) · CPC title

• H04N21/4382 Primary

  Demodulation or channel decoding, e.g. QPSK demodulation (analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002) · CPC title