Opportunistic reclaiming of resources in new radio-spectrum sharing (NR-SS)

• US 10,616,771 B2
• Filed: 06/26/2019
• Issued: 04/07/2020
• Est. Priority Date: 12/06/2016
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Montojo, Juan, Yoo, Taesang, Zhang, Xiaoxia, Damnjanovic, Aleksandar, Mallik, Siddhartha
• Primary Examiner(s): Figueroa, Marisol
• Application Number:
  US16/453,884
• Publication Number:
  US 20190320323A1
• Time in Patent Office: 286 Days
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 28/26 Resource reservation
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/56 based on priority criteria
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 74/0808 using carrier sensing, e.g. carrier sense multiple access [CSMA]
• CPC Class Codes: H04W 74/0875 with assigned priorities based access

Abstract

Wireless communications systems and methods related to reclaiming of resources in a shared frequency spectrum shared by multiple operators are provided. A first wireless communication device associated with a first operator of a plurality of operators identifies a transmission opportunity in a shared frequency spectrum shared by the plurality of operators, wherein the first operator has priority among the plurality of operators for accessing the shared frequency spectrum in the transmission opportunity. The first wireless communication device communicates with a second wireless communication device associated with the first operator, in the transmission opportunity without a prior reservation of the transmission opportunity.

Claims

1. A method of wireless communication, comprising:

identifying, by a first wireless communication device associated with a first operator of a plurality of operators, a transmission opportunity in a shared frequency spectrum shared by the plurality of operators, wherein the transmission opportunity is not reserved by the first wireless communication device during a reservation indication slot of the transmission opportunity;

determining, by the first wireless communication device, that the transmission opportunity is reclaimable after the reservation indication slot; and

communicating, by the first wireless communication device, with a second wireless communication device associated with the first operator, in a reclaimed portion of the transmission opportunity without a reservation of the transmission opportunity by the first wireless communication device.

2. The method of claim 1, wherein the determining comprises detecting that a transmission from a third wireless communication device in a first portion of the transmission opportunity has completed, and wherein the reclaimed portion is after the first portion.

3. The method of claim 2, wherein the third wireless communication device is associated with the first operator.

4. The method of claim 2, wherein the third wireless communication device is associated with a second operator of the plurality of operators different from the first operator.

5. The method of claim 4, wherein the first operator has priority over the second operator for accessing the shared frequency spectrum in the transmission opportunity.

6. The method of claim 4, wherein the second operator has priority over the first operator for accessing the shared frequency spectrum in the transmission opportunity.

7. The method of claim 1, further comprising:

determining, by the first wireless communication device, that data is ready for transmission after the reservation indication slot,

wherein the communicating includes communicating, with the second wireless communication device, the data in the reclaimed portion of the transmission opportunity.

8. An apparatus comprising:

a processor configured to;

identify a transmission opportunity in a shared frequency spectrum shared by a plurality of operators, wherein the apparatus is associated with a first operator of the plurality of operators, and wherein the transmission opportunity is not reserved by the apparatus during a reservation indication slot of the transmission opportunity;

determine that the transmission opportunity is reclaimable after the reservation indication slot; and

a transceiver configured to communicate, with a second wireless communication device associated with the first operator, in a reclaimed portion of the transmission opportunity without a reservation of the transmission opportunity by the apparatus.

9. The apparatus of claim 8, wherein the processor configured to determine that the transmission opportunity is reclaimable is further configured to:

detect that a transmission from a third wireless communication device in a first portion of the transmission opportunity has completed, wherein the reclaimed portion is after the first portion.

10. The apparatus of claim 9, wherein the third wireless communication device is associated with the first operator.

11. The apparatus of claim 9, wherein the third wireless communication device is associated with a second operator of the plurality of operators different from the first operator.

12. The apparatus of claim 11, wherein the first operator has priority over the second operator for accessing the shared frequency spectrum in the transmission opportunity.

13. The apparatus of claim 11, wherein the second operator has priority over the first operator for accessing the shared frequency spectrum in the transmission opportunity.

14. The apparatus of claim 8, wherein the processor is further configured to:

determine that data is ready for transmission after the reservation indication slot, and

wherein the transceiver configured to communicate with the second wireless communication device is further configured to;

communicate, with the second wireless communication device, the data in the reclaimed portion of the transmission opportunity.

15. A non-transitory computer-readable medium having program code recorded thereon, the program code comprising:

code for causing a first wireless communication device associated with a first operator of a plurality of operators to identify a transmission opportunity in a shared frequency spectrum shared by the plurality of operators, wherein the transmission opportunity is not reserved by the first wireless communication device during a reservation indication slot of the transmission opportunity;

code for causing the first wireless communication device to determine that the transmission opportunity is reclaimable after the reservation indication slot; and

code for causing the first wireless communication device to communicate, with a second wireless communication device associated with the first operator, in a reclaimed portion of the transmission opportunity without a reservation of the transmission opportunity by the first wireless communication device.

16. The non-transitory computer-readable medium of claim 15, wherein the code for causing the first wireless communication device to determine that the transmission opportunity is reclaimable is further configured to:

detect that a transmission from a third wireless communication device in a first portion of the transmission opportunity has completed, wherein the reclaimed portion is after the first portion.

17. The non-transitory computer-readable medium of claim 16, wherein the third wireless communication device is associated with the first operator.

18. The non-transitory computer-readable medium of claim 16, wherein the third wireless communication device is associated with a second operator of the plurality of operators different from the first operator.

19. The non-transitory computer-readable medium of claim 18, wherein the first operator has priority over the second operator for accessing the shared frequency spectrum in the transmission opportunity.

20. The non-transitory computer-readable medium of claim 18, wherein the second operator has priority over the first operator for accessing the shared frequency spectrum in the transmission opportunity.