On-demand system information

• US 10,575,226 B2
• Filed: 12/17/2018
• Issued: 02/25/2020
• Est. Priority Date: 02/10/2015
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Kubota, Keiichi, Ji, Tingfang, Bhushan, Naga, Horn, Gavin Bernard, Smee, John Edward, Soriaga, Joseph Binamira, Zeng, Wei
• Primary Examiner(s): Solinsky, Peter G
• Application Number:
  US16/222,588
• Publication Number:
  US 20190124568A1
• Time in Patent Office: 435 Days
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04L 12/18 for broadcast or conference , e.g. multicast
• CPC Class Codes: H04W 36/0083 Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A wireless network may provide system information by either a fixed periodic broadcast or broad-beam transmission or in response to a request by a user equipment (UE). The wireless network may broadcast (or broad-beam transmit) a signal that indicates to the UEs within a cell or zone coverage area that system information is to be transmitted on a fixed periodic schedule or in response to a request sent by one or more UEs.

Claims

1. A method for wireless communication at a user equipment (UE), comprising:

receiving, at the UE, a system information block indicating that additional system information is to be requested and indicating resources to use to request the additional system information;

transmitting, by the UE, a request for the additional system information using at least some of the indicated resources;

receiving, at the UE, the additional system information in accordance with the request; and

communicating with a base station in accordance with the additional system information.

2. The method of claim 1, wherein receiving the system information block further comprises receiving, by the UE, the system information block via a broadcast or broad-beam operation, and wherein receiving the additional system information further comprises receiving, by the UE, the additional system information via a narrow-beam operation.

3. The method of claim 1, wherein the system information block is a master system information block (MSIB) or a first system information block.

4. The method of claim 1, wherein receiving the system information block further comprises:

receiving information indicating where the UE is to send the request for additional system information.

5. The method of claim 1, wherein receiving the system information block further comprises:

receiving information indicating a predetermined channel on which the additional system information is to be transmitted via a broadcast signal via a broadcast or broad-beam operation.

6. The method of claim 1, wherein receiving the system information block further comprises receiving another system information block (OSIB) that is numbered and organized based on system information functions.

7. The method of claim 1, wherein receiving the system information block comprises:

receiving the system information block as part of a broad-beam operation in a massive multiple-input/multiple-output (MIMO) network.

8. The method of claim 7, wherein receiving the additional system information comprises:

receiving the additional system information as part of a broad-beam or narrow-beam operation.

9. The method of claim 1, wherein receiving the system information block comprises:

receiving the system information block as part of a broadcast operation in a non-massive multiple-input/multiple-output (MIMO) network.

10. The method of claim 9, wherein receiving the additional system information comprises:

receiving the additional system information as part of a broadcast or unicast operation.

11. The method of claim 1, further comprising:

identifying one or more functions for which the additional system information is to be obtained.

12. The method of claim 11, wherein transmitting the request further comprises transmitting a request for the additional system information for the one or more functions, and wherein receiving the additional system information further comprises receiving the additional system information for the one or more functions in response to the request.

13. The method of claim 11, wherein receiving the additional system information further comprises:

receiving a system information block that is a SIB2 or greater.

14. The method of claim 11, wherein the indication comprises a first indication, and receiving the system information block comprises:

receiving a second indication that the additional system information for the one or more functions is to be broadcast at one or more predetermined times and on one or more predetermined channels.

15. The method of claim 11, wherein the indication comprises a first indication, and receiving the first signal further comprises:

receiving a second indication that the additional system information for the one or more functions is available.

16. The method of claim 15, wherein receiving the system information block further comprises:

receiving information identifying a target device where one or more requests for the additional system information for the one or more functions are to be sent.

17. The method of claim 15, wherein receiving the system information block further comprises:

receiving information identifying one or more time periods corresponding to when one or more requests for the additional system information for the one or more functions are to be sent, wherein each time period corresponds to a separate service of the one or more functions.

18. The method of claim 11, wherein receiving the additional system information further comprises:

receiving the additional system information for one of the one or more functions;

determining whether second additional system information for the one of the one or more functions is needed; and

requesting the second additional system information for the one of the one or more functions based at least in part on the determining.

19. The method of claim 11, wherein the one or more functions include one or more of an energy efficient function, a high reliability function, a low latency function, a broadcast function, or a small data function.

20. The method of claim 11, wherein receiving the additional system information further comprises:

receiving the additional system information for the one or more functions, wherein the additional system information includes information identifying a validity time period; and

receiving the additional system information again for the one or more functions upon expiration of the validity time period.

21. The method of claim 20, wherein the validity time period is based on a power saving mode (PSM) time period or an amount of time to cycle through all value tags of the additional system information.

22. An apparatus for wireless communication, comprising:

means for receiving, at the UE, a system information block indicating that additional system information is to be requested and indicating resources to use to request the additional system information;

means for transmitting, by the UE, a request for the additional system information using at least some of the indicated resources;

means for receiving, at the UE, the additional system information in accordance with the request; and

means for communicating with a base station in accordance with the additional system information.

23. The apparatus of claim 22, wherein the means for receiving the system information block further comprises means for receiving, by the UE, the system information block via a broadcast or broad-beam operation, and wherein the means for receiving the additional system information further comprises means for receiving, by the UE, the additional system information via a narrow-beam operation.

24. The apparatus of claim 22, wherein the system information block is a master system information block (MSIB) or a first system information block.

25. The apparatus of claim 22, wherein means for receiving the system information block further comprises:

means for receiving information indicating where the UE is to send the request for additional system information.

26. The apparatus of claim 22, wherein means for receiving the system information block further comprises means for receiving another system information block (OSIB) that is numbered and organized based on system information functions.

27. The apparatus of claim 22, further comprising:

identifying one or more functions for which the additional system information is to be obtained.

28. The apparatus of claim 27, wherein transmitting the request further comprises transmitting a request for the additional system information for the one or more functions, and wherein receiving the additional system information further comprises receiving the additional system information for the one or more functions in response to the request.

29. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory, the instructions being executable by the processor to;

receive, at the UE, a system information block indicating that additional system information is to be requested and indicating resources to use to request the additional system information;

transmit, by the UE, a request for the additional system information using at least some of the indicated resources;

receive, at the UE, the additional system information in accordance with the request; and

communicate with a base station in accordance with the additional system information.

30. A non-transitory computer-readable medium storing computer-executable code for wireless communication, the code executable by a processor to:

receive, at the UE, a system information block indicating that additional system information is to be requested and indicating resources to use to request the additional system information;

transmit, by the UE, a request for the additional system information using at least some of the indicated resources;

receive, at the UE, the additional system information in accordance with the request; and

communicate with a base station in accordance with the additional system information.