Method and apparatus for obtaining location information after transitioning between modes of communications

{
  "publication_number": "US11519999B2",
  "country": "US",
  "kind": "B2",
  "title": "Method and apparatus for obtaining location information after transitioning between modes of communications",
  "abstract": "Aspects of the subject disclosure may include, for example, monitoring, by a device, a synchronization signal generated by at least one anchor of a plurality of anchors located in a network, while engaged in a network communications mode. The disclosure further includes detecting an inability to sense the synchronization signal generated by the at least one anchor of the plurality of anchors for a number of frames and configuring the device to transition to peer-to-peer communications. The subject disclosure also addresses monitoring for a presence of the synchronization signal generated by the network of anchors, while engaged in peer-to-peer communications, to determine whether to transition back to a network communications mode. Other embodiments are disclosed.",
  "claims": [
    "1. A device, comprising: a processing system including a processor; and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations comprising: monitoring a beacon signal generated by at least one anchor of a plurality of anchors located in a network, the network enabling the device and a plurality of other devices to determine their respective locations in a coverage area of the network; detecting a plurality of instances in which the beacon signal generated by the at least one anchor of the plurality of anchors is not sensed by the device; responsive to the plurality of instances exceeding a first threshold, transitioning to peer-to-peer communications between the device and one or more devices of the plurality of other devices, wherein the peer-to-peer communications enables the device to determine its location relative to the one or more devices; and responsive to the transitioning to the peer-to-peer communications between the device and the one or more devices: selecting a finite period having a select periodicity; monitoring, during the finite period, for a presence of the beacon signal generated by the at least one anchor of the plurality of anchors located in the network; detecting the presence of the beacon signal; extending the finite period to synchronize the device to the beacon signal generated by the at least one anchor of the network; and responsive to the device being synchronized to the beacon signal: determining that a number of instances of the beacon signal exceeds a second threshold; and transitioning from the peer-to-peer communications to communications with the at least one anchor of the plurality of anchors located in the network.",
    "2. The device of claim 1, wherein the monitoring is performed by a first radio receiver of the device.",
    "3. The device of claim 2, wherein the first radio receiver utilizes ultra-wideband signaling technology for receiving the beacon signal and for determining a location of the device in the coverage area.",
    "4. The device of claim 2, wherein a second radio receiver of the device is utilized for the peer-to-peer communications between the device and the one or more devices.",
    "5. The device of claim 2, wherein the first radio receiver is configured according to a first wireless technology.",
    "6. The device of claim 5, wherein the second radio receiver is configured according to a second wireless technology.",
    "7. The device of claim 6, wherein the first wireless technology differs from the second wireless technology.",
    "8. The device of claim 7, wherein responsive to the device being synchronized to beacon signal, the operations further comprise transitioning from peer-to-peer communications to communications with the at least one anchor of the plurality of anchors located in the network.",
    "9. The device of claim 7, wherein the first wireless technology comprises a wideband signaling technology, and wherein the second wireless technology comprises narrowband signaling technology.",
    "10. The device of claim 1, wherein the operations further comprise transmitting, to the at least one anchor, event information collected by the device, the event information associated with locations of the device obtained by the device while the device operated according to peer-to-peer communications.",
    "11. The device of claim 10, wherein the at least one anchor is configured to submit the event information for delivery to a server managing operations of the network, and wherein the event information comprises proximity information between the device and the one or more devices, trajectory of the device, one or more alarms initiated by the device, or combinations thereof.",
    "12. The device of claim 1, wherein responsive to the device being synchronized to beacon signal, the operations further comprise detecting that the device is in a first portion of the coverage area of the network that does not provide location services, and responsive to the detecting, adjusting a timing of the peer-to-peer communications to avoid interfering with other devices operating in a second portion of the coverage area of the network that is providing the location services to the other devices.",
    "13. The device of claim 12, wherein the detecting that the device is in the first portion of the coverage area of the network that does not provide the location services comprises receiving messages from one or more anchors of the plurality of anchors and determining from the messages that the device is in the first portion of the coverage area of the network that does not provide the location services.",
    "14. The device of claim 1, wherein responsive to the transitioning to the peer-to-peer communications, the operations further comprise collecting event information associated with determined locations of the device and transmitting the event information to a communication device located outside of the coverage area of the plurality of anchors, wherein the communication device is configured to provide the event information to a server managing operations of the network.",
    "15. The device of claim 14, wherein the communication device comprises a smartphone utilized by a user in proximity to the device.",
    "16. A non-transitory machine-readable medium comprising executable instructions that, when executed by a processing system including a processor operating from a device, facilitate performance of operations, the operations comprising: performing peer-to-peer communication services to determine a location of the device relative to other devices; monitoring for a presence of a beacon signal during a finite period having a select periodicity, the beacon signal generated by at least one anchor of a plurality of anchors located in a network, the network enabling the device and a plurality of other devices to determine their respective locations when located in a coverage area of the network; detecting the presence of the beacon signal generated by the at least one anchor of the network; extending the finite period to synchronize a clock of the device to the beacon signal generated by the at least one anchor of the network; responsive to the device being synchronized to beacon signal, determining whether to transition from peer-to-peer communications to communications with the at least one anchor of the plurality of anchors located in the network: responsive to the determining whether to transition from the peer-to-peer communications to communications with the at least one anchor of the plurality of anchors located in the network, detecting that the device is in a first portion of the coverage area of the network that does not provide location services; and responsive to the detecting that the device is in the first portion of the coverage area of the network that does not provide the location services, adjusting a timing of peer-to-peer communications to avoid interfering with other devices operating in a second portion of the coverage area of the network that is providing location services to the other devices.",
    "17. The non-transitory machine-readable medium of claim 16, wherein the monitoring is performed by a first radio receiver of the device.",
    "18. A method, comprising: monitoring, by a processing system including a processor operating from a device, a synchronization signal generated by at least one anchor of a plurality of anchors located in a network, the network enabling the device and a plurality of other devices to determine their respective locations in a coverage area of the network; detecting, by the processing system, an inability to sense the synchronization signal generated by the at least one anchor of the plurality of anchors for a number of frames, each frame including an instance of the synchronization signal; responsive to the detecting, configuring, by the processing system, the device to transition to peer-to-peer communications between the device and one or more devices of the plurality of other devices, wherein the peer-to-peer communications enables the device to determine its location relative to the one or more devices; monitoring, by the processing system during a finite period having a select periodicity, for a presence of the synchronization signal generated by the at least one anchor of the plurality of anchors located in the network; detecting, by the processing system, the presence of the synchronization signal; synchronizing, by the processing system, to the synchronization signal generated by the at least one anchor of the network; and responsive to determining that a number of instances of the synchronization signal exceeds a second threshold, transitioning, by the processing system, from the peer-to-peer communications to communications with the at least one anchor of the plurality of anchors located in the network.",
    "19. The method of claim 18, wherein the monitoring for a presence of a synchronization signal is performed by a first radio receiver of the device.",
    "20. The method of claim 19, wherein the first radio receiver is configured according to a first wireless technology."
  ],
  "description_excerpt": "The subject disclosure relates to a method and apparatus for obtaining location information after transitioning between modes of communication.\n\nDetermining location information between objects can serve multiple purposes such as predicting and mitigating collisions between objects, tracking distances between objects, enforcing distancing between objects, inventory management, or combinations thereof. Objects can include people, mobile machinery such as forklifts and robots, vehicles controlled by individuals or driverless, or other objects for which location management and/or tracking may be desirable. Location information can correspond to distances between objects, trajectory of objects, speed of objects, positions of objects, or combinations thereof.\n\nReference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:\n\nFIG. 1 is a block diagram illustrating an exemplary, non-limiting embodiment of a mobile tag and anchors for determining location information between the mobile tag and the anchors in accordance with various aspects described herein.\n\nFIG. 2 is a block diagram illustrating an exemplary, non-limiting embodiment of a timing diagram for determining location information between the mobile tag and the anchors of FIG. 1 in accordance with various aspects described herein.\n\nFIG. 3 is a block diagram illustrating an exemplary, non-limiting embodiment for determining location information between the mobile tag and pairs of anchors in accordance with various aspects described herein.",
  "cpc": [
    "G01S 5/0289",
    "G01S 11/06",
    "G01S 13/765",
    "G01S 5/10",
    "G01S 5/12",
    "G01S 5/14",
    "G08B 21/0266",
    "G08B 21/18",
    "H04W 16/14",
    "H04W 4/027",
    "H04W 4/029",
    "H04W 64/00",
    "H04W 76/14"
  ],
  "ipc": [
    "H04W 16/14",
    "H04W 4/02",
    "H04W 4/029",
    "H04W 64/00",
    "H04W 76/14",
    "G01S 5/02",
    "G08B 21/18"
  ],
  "assignees": [
    "Red Point Positioning Corp"
  ],
  "inventors": [
    "Serhii Rybalko",
    "Zhenzhen Ye",
    "Chunjie Duan"
  ],
  "filing_date": "2020-10-28",
  "publication_date": "2022-12-06",
  "grant_date": "2022-12-06",
  "priority_date": "2020-07-10",
  "application_number": "US-202017082795-A",
  "family_id": "79172426",
  "cited_by_count": 5,
  "citations": [
    "CN105075317A",
    "CN105075317B",
    "US20160212579A1",
    "US20180020329A1",
    "US20180101704A1",
    "US20190373477A1",
    "US20220011398A1"
  ]
}