Small packet optimizations for internet-of-things applications

• US 10,721,763 B2
• Filed: 01/18/2018
• Issued: 07/21/2020
• Est. Priority Date: 01/20/2017
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Rico Alvarino, Alberto, Dhanda, Mungal Singh
• Primary Examiner(s): Sweet, Lonnie V
• Application Number:
  US15/874,787
• Publication Number:
  US 20180213556A1
• Time in Patent Office: 915 Days
• Field of Search: None
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/26025 Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking allocating sub-channels of the transmission path H04L5/003
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 68/02 Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 74/004 in the uplink, i.e. towards network
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states

Abstract

Certain aspects of the present disclosure relate to methods and apparatus for optimizing delivery of a small amount of mobile originated (MO) or mobile terminated (MT) data.

Claims

1. A method for wireless communication by a base station, comprising:

receiving a paging indication and at least an indication of a limited amount of data targeted for a user equipment (UE) that is not in a connected state with the base station;

transmitting a paging message to the UE with at least one of the data or an indication of the data, wherein the paging message includes an indication of whether the data is to be acknowledged; and

monitoring for a physical random access channel (PRACH) transmission from the UE as an acknowledgment of receipt of the data.

2. The method of claim 1, wherein the data is encapsulated in the paging message.

3. The method of claim 1, wherein the paging message is received with the data encapsulated in a non-access stratum (NAS) protocol data unit (PDU).

4. The method of claim 1, wherein the paging message triggers a timer for retransmitting the data if not acknowledged within a predetermined period of time.

5. The method of claim 1, further comprising including, in the paging message, an indication of PRACH resources for the UE to use for acknowledging the data.

6. A method for wireless communication by a base station, comprising:

receiving a paging indication and at least an indication of a limited amount of data targeted for a user equipment (UE) that is not in a connected state with the base station;

transmitting a paging message to the UE with the indication of the data, wherein the paging message includes an indication of whether the paging message is to be acknowledged; and

transmitting the data after the paging message.

7. The method of claim 6, further comprising providing information, in the paging message, regarding resources for the UE to use for monitoring for the data.

8. The method of claim 6, further comprising:

including, in the paging message, an indication of physical random access channel (PRACH) resources for the UE to use for acknowledging the paging message; and

sending the data after receiving a PRACH transmission from the UE on the indicated PRACH resources.

9. The method of claim 6, further comprising:

including, in the paging message, an indication of physical random access channel (PRACH) resources for the UE to use for acknowledging the paging message; and

requesting the data from a network node after receiving a PRACH transmission from the UE on the indicated PRACH resources; and

sending the data to the UE.

10. A method for wireless communication by a user equipment (UE), comprising:

receiving from a base station, while not in a connected state, a paging message and at least an indication of a limited amount of data targeted for the UE, wherein the paging message includes an indication of whether the data is to be acknowledged;

receiving the data in at least one of the paging message or a subsequent message; and

transmitting a physical random access channel (PRACH) to the base station as an acknowledgment of receipt of the data.

11. The method of claim 10, wherein the data is encapsulated in the paging message.

12. The method of claim 10, wherein the paging message includes an indication of the PRACH resources for the UE to use for acknowledging the data.

13. A method for wireless communication by a user equipment (UE), comprising:

receiving from a base station, while not in a connected state, a paging message and at least an indication of a limited amount of data targeted for the UE, wherein the paging message includes an indication of whether the paging message is to be acknowledged; and

receiving the data in a subsequent message after the paging message.

14. The method of claim 13, further comprising receiving information, in the paging message, regarding resources for the UE to use for monitoring for the data.

15. The method of claim 13, further comprising:

receiving, in the paging message, an indication of physical random access channel (PRACH) resources for the UE to use for acknowledging the paging message; and

receiving the data after transmitting a PRACH transmission from the UE on the indicated PRACH resources.

16. A method for wireless communication by a user equipment (UE), comprising:

determining a set of resources for connectionless delivery of a limited amount of data to a base station, based at least in part on an amount of the data the UE has to send; and

transmitting to the base station, while not in a connected state, the limited amount of data using the determined set of resources, wherein the data is transmitted via a physical random access channel (PRACH) transmission.

17. The method of claim 16, wherein different sets of resources are allocated to at least one of different coverage levels or packet sizes.

18. The method of claim 16, wherein the set of resources are determined based on broadcast system information.

19. The method of claim 16, further comprising receiving a contention resolution message containing a UE identifier as an acknowledgement of receipt of the data.

20. A method for wireless communication by a base station, comprising:

determining a set of resources for connectionless delivery of a limited amount of data from a user equipment (UE), based at least in part on an amount of the data the UE has to send; and

receiving from the UE, while the UE is not in a connected state, the limited amount of data using the determined set of resources, wherein the data is received via a physical random access channel (PRACH) transmission.

21. The method of claim 20, wherein different sets of resources are allocated to at least one of different coverage levels or packet sizes.

22. The method of claim 20, further comprising broadcasting system information indicating the set of resources.

23. The method of claim 20, further comprising transmitting a contention resolution message containing a UE identifier as an acknowledgement of receipt of the data.

24. An apparatus for wireless communication by a user equipment (UE), comprising:

at least one processor configured to

receive, from a base station, while not in a connected state, a paging message and at least an indication of a limited amount of data targeted for the UE, wherein the paging message includes an indication of whether the data is to be acknowledged,

receive the data in at least one of the paging message or a subsequent message, and

transmit a physical random access channel (PRACH) to the base station as an acknowledgment of receipt of the data; and

a memory coupled with the at least one processor.

25. The apparatus of claim 24, wherein the data is encapsulated in the paging message.

26. The apparatus of claim 24, wherein the paging message includes an indication of PRACH resources for the UE to use for acknowledging the data.

27. An apparatus for wireless communication by a user equipment (UE), comprising:

at least one processor configured to

receive from a base station, while not in a connected state, a paging message and at least an indication of a limited amount of data targeted for the UE, wherein the paging message includes an indication of whether the paging message is to be acknowledged, and

receive the data in a subsequent message after the paging message; and

a memory coupled with the at least one processor.

28. The apparatus of claim 27, wherein the processor is further configured to receive information, in the paging message, regarding resources for the UE to use for monitoring for the data.

29. The apparatus of claim 27, wherein the processor is further configured to:

receive, in the paging message, an indication of physical random access channel (PRACH) resources for the UE to use for acknowledging the paging message; and

receive the data after transmitting a PRACH transmission from the UE on the indicated PRACH resources.

30. An apparatus for wireless communication by a user equipment (UE), comprising:

at least one processor configured to

determine a set of resources for connectionless delivery of a limited amount of data to a base station, based at least in part on an amount of the data the UE has to send, and

transmit to the base station, while not in a connected state, the limited amount of data using the determined set of resources, wherein the data is transmitted via a physical random access channel (PRACH) transmission; and

a memory coupled with the at least one processor.

31. The apparatus of claim 30, wherein different sets of resources are allocated to at least one of different coverage levels or packet sizes.

32. The apparatus of claim 30, wherein the set of resources are determined based on broadcast system information.

33. The apparatus of claim 30, wherein the processor is further configured to receive a contention resolution message containing a UE identifier as an acknowledgement of receipt of the data.