Enhanced random access and wake-up mechanism

• US 10,687,278 B2
• Filed: 08/04/2017
• Issued: 06/16/2020
• Est. Priority Date: 08/04/2017
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Krishnamoorthy, Parthasarathy, Mohan, Prashanth, Pasunooru, Naveen Kumar, Annam, Raevanth Venkat, Vasanthasenan, Krishnakumar, Dhanapal, Muthukumaran, Raghunathan, Shravan Kumar
• Primary Examiner(s): Nguyen, Steven H
• Application Number:
  US15/669,420
• Publication Number:
  US 20190045437A1
• Time in Patent Office: 1,047 Days
• 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 28/0221 power availability or consumption
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Methods, systems, and devices for wireless communication are described. One technique includes identifying, by a user equipment (UE), a periodic time window for the UE to access a network, and transmitting an indication of the periodic time window to the network in a random access channel transmission. The technique also describes receiving, from the network based at least in part on the periodic time window, an indication of uplink resources allocated to the UE during the identified periodic time window. Another technique includes receiving, from a UE in a random access channel transmission, an indication of a periodic time window for the UE to access the network. The technique also includes determining, based at least in part on the periodic time window, uplink resources for the UE to access the network during instances of the identified periodic time window and transmit an indication of the uplink resources.

Claims

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

detecting, by the UE, congestion in a network;

performing data mining to determine a time that the UE performs random access to access the network;

identifying, by the UE, a periodic time window for the UE to access the network, wherein a period of the periodic time window is determined based at least in part on a parameter of an application running on the UE, the detected congestion, and the determined time;

transmitting, to the network in a random access channel transmission, an indication of the identified periodic time window;

receiving, from the network based at least in part on the indication of the identified periodic time window, an indication of uplink resources allocated to the UE for the UE to access the network during the identified periodic time window; and

entering, by the UE, a sleep mode until an instance of the identified periodic time window based at least in part on the received indication of uplink resources.

2. The method of claim 1, further comprising:

determining, by the UE, that parameters for the periodic time window have changed; and

transmitting, to the network, an indication of an updated periodic time window in a second random access channel transmission.

3. The method of claim 1, wherein the indication of the identified periodic time window comprises an information element in the random access channel transmission.

4. The method of claim 1, wherein identifying the periodic time window comprises:

identifying the periodic time window for the UE to access the network based at least in part on a data requirement for the UE, or a time when network access is desired by the UE, or a duration of network access desired by the UE, or a combination thereof.

5. The method of claim 1, wherein the UE is an Internet-of-Things device that has a maximum network speed cap of 10 megabits per second.

6. The method of claim 1, wherein entering the sleep mode until the instance of the identified periodic time window skips a hyper system frame number (SFN) cycle.

7. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to;

detect congestion in a network;

perform data mining to determine a time that the UE performs random access to access the network;

identify a periodic time window for the UE to access the network, wherein a period of the periodic time window is determined based at least in part on a parameter of an application running on the UE, of the detected congestion, and the determined time;

transmit, to the network in a random access channel transmission, an indication of the identified periodic time window;

receive, from the network based at least in part on the indication of the identified periodic time window, an indication of uplink resources allocated to the apparatus for the apparatus to access the network during the identified periodic time window; and

enter, by the UE, a sleep mode until an instance of the identified periodic time window based at least in part on the received indication of uplink resources.

8. The apparatus of claim 7, wherein the instructions are further executable by the processor to:

determine that parameters for the periodic time window have changed; and

transmit, to the network, an indication of an updated periodic time window in a second random access channel transmission.

9. The apparatus of claim 7, wherein the indication of the identified periodic time window comprises an information element in the random access channel transmission.

10. The apparatus of claim 7, wherein identifying the periodic time window comprises:

identifying the periodic time window for the apparatus to access the network based at least in part on a data requirement for the apparatus, or a time when network access is desired by the apparatus, or a duration of network access desired by the apparatus, or a combination thereof.

11. The apparatus of claim 7, wherein the apparatus is an Internet-of-Things device that has a maximum network speed cap of 10 megabits per second.

12. The apparatus of claim 7, wherein entering the sleep mode until the instance of the identified periodic time window skips a hyper system frame number (SFN) cycle.

13. A method for wireless communication at a network device of a network, comprising:

receiving, from a user equipment (UE) in a random access channel transmission, an indication of a periodic time window for the UE to access the network, wherein a period of the periodic time window is determined based at least in part on a parameter of an application running on the UE, congestion in the network, and data mining to determine a time that the UE performs random access to access the network;

determining, based at least in part on the received indication of the periodic time window, uplink resources for the UE to access the network during instances of the identified periodic time window;

transmitting, to the UE, an indication of the determined uplink resources; and

determining that the UE is entering a sleep mode until an instance of the identified periodic time window based at least in part on the transmitted indication of the determined uplink resources.

14. The method of claim 13, further comprising:

storing an indication of the periodic time window for the UE with an identifier of the UE.

15. The method of claim 13, further comprising:

receiving, from the UE, an indication of an updated periodic time window in a second random access channel transmission;

determining, based at least in part on the updated periodic time window, updated uplink resources for the UE; and

transmitting, to the UE, an indication of the updated uplink resources.

16. The method of claim 15, further comprising:

storing an updated indication of the updated periodic time window for the UE with an identifier of the UE.

17. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to;

receive, from a user equipment (UE) in a random access channel transmission, an indication of a periodic time window for the UE to access the network, wherein a period of the periodic time window is determined based at least in part on a parameter of an application running on the UE, congestion in the network, and data mining to determine a time that the UE performs random access to access the network;

determine, based at least in part on the received indication of the periodic time window, uplink resources for the UE to access the network during instances of the identified periodic time window;

transmit, to the UE, an indication of the determined uplink resources; and

determine that the UE is entering a sleep mode until an instance of the identified periodic time window based at least in part on the transmitted indication of the determined uplink resources.

18. The apparatus of claim 17, wherein the instructions are further executable by the processor to:

store an indication of the periodic time window for the UE with an identifier of the UE.

19. The apparatus of claim 17, wherein the instructions are further executable by the processor to:

receive, from the UE, an indication of an updated periodic time window in a second random access channel transmission;

determine, based at least in part on the updated periodic time window, updated uplink resources for the UE; and

transmit, to the UE, an indication of the updated uplink resources.