Techniques for discontinuous reception cycle based measurement gaps

Patent metadata

Field	Value
Publication number	US-11622328-B2
Application number	US-202117190617-A
Country	US
Kind code	B2
Filing date	Mar 3, 2021
Priority date	Jul 2, 2020
Publication date	Apr 4, 2023
Grant date	Apr 4, 2023

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may establish a communication connection with a serving cell associated with a first discontinuous reception (DRX) cycle configuration, determine, based at least in part on at least one of a first on duration of a first DRX cycle indicated by the first DRX cycle configuration or a type of traffic of one or more communications received during the first DRX cycle, an autonomous measurement gap associated with a neighboring cell, and perform a measurement of the neighboring cell during the autonomous measurement gap. Numerous other aspects are provided.

First claim

What is claimed is:

1. A method of wireless communication performed by a user equipment (UE), comprising:
establishing a communication connection with a serving cell associated with a first discontinuous reception (DRX) cycle configuration;
identifying a time period after a start of a first on duration of a first DRX cycle indicated by the first DRX cycle configuration;
determining an autonomous measurement gap, associated with a neighboring cell, based at least in part on determining that:
the time period has passed, or
the UE has transitioned from an active state of the first DRX cycle to an inactive state of the first DRX cycle; and

performing a measurement of the neighboring cell during the autonomous measurement gap.

2. The method of claim 1 , wherein the serving cell includes a first serving cell associated with the first DRX cycle configuration and a second serving cell associated with a second DRX cycle configuration, and
wherein the autonomous measurement gap associated with the neighboring cell is determined further based at least in part on a second on duration of a second DRX cycle indicated by the second DRX cycle configuration.

3. The method of claim 2 , wherein the first serving cell is associated with a first radio access technology (RAT) and the second serving cell is associated with a second RAT.

4. The method of claim 1 , wherein the serving cell is associated with a first radio access technology (RAT) and the neighboring cell is associated with a second RAT.

5. The method of claim 1 , wherein identifying the time period comprises:
determining the time period based at least in part on the first DRX cycle configuration.

6. The method of claim 1 , wherein identifying the time period comprises:
determining the time period based at least in part on at least one of:
a DRX cycle length indicated by the first DRX cycle configuration, or
an inactivity timer indicated by the first DRX cycle configuration.

7. The method of claim 1 , wherein identifying the time period comprises:
determining the time period based at least in part on a type of traffic of one or more communications received during the first DRX cycle.

8. The method of claim 1 , wherein identifying the time period comprises:
identifying historical data associated with an amount of time between the start of the first on duration of the first DRX cycle and the UE transitioning from the active state of the first DRX cycle to the inactive state of the first DRX cycle; and
determining the time period based at least in part on the historical data associated with the amount of time between the start of the on duration of the first DRX cycle and the UE transitioning from the active state of the first DRX cycle to the inactive state of the first DRX cycle.

9. The method of claim 1 , further comprising:
reducing the time period based at least in part on at least one of:
determining that a length of the autonomous measurement gap is less than a threshold,
determining that a display of the UE is off and one or more communications received during the first DRX cycle are associated with traffic that is delay tolerant, or
determining that one or more previous measurements of the neighboring cell satisfy a measurement threshold.

10. The method of claim 1 , further comprising:
increasing the time period based at least in part on at least one of:
determining that one or more communications received during the first DRX cycle are associated with traffic that is not delay tolerant,
determining that the UE is not located within a coverage area associated with the neighboring cell, or
determining that previous measurements of the neighboring cell do not satisfy a measurement threshold.

11. The method of claim 1 , wherein identifying the time period comprises:
determining that a plurality of autonomous measurement gaps are to occur during the first DRX cycle; and
determining the time period based at least in part on the determination that a plurality of autonomous measurement gaps are to occur during the first DRX cycle.

12. The method of claim 1 , further comprising:
receiving, from the serving cell, a second DRX cycle configuration,
wherein identifying the time period comprises:
determining the time period based at least in part on at least one of:
the first DRX cycle configuration,
the second DRX cycle configuration, or
a combination thereof.

13. The method of claim 12 , wherein the first DRX cycle configuration is associated with a first radio access technology (RAT) and the second DRX cycle configuration is associated with a second RAT.

14. The method of claim 1 , further comprising:
determining that a communication received during the first DRX cycle is associated with traffic that is not delay tolerant,
wherein determining the autonomous measurement gap associated with the neighboring cell comprises:
determining that the autonomous measurement gap associated with the neighboring cell is to occur during an inactive state of the first DRX cycle.

15. The method of claim 1 , further comprising:
determining that a communication received during the first DRX cycle is associated with traffic that is not delay tolerant; and
determining that a communication associated with traffic that is not delay tolerant is not to be received until a next DRX cycle,
wherein determining the autonomous measurement gap associated with the neighboring cell comprises:
determining that the autonomous measurement gap associated with the neighboring cell is to occur after the communication received during the first DRX cycle that is associated with traffic that is not delay tolerant.

16. The method of claim 15 , wherein determining that a communication associated with traffic that is not delay tolerant is not to be received until a next DRX cycle comprises:
identifying historical data associated with receiving communications associated with traffic that is not delay tolerant; and
determining an average amount of time between receiving communications associated with traffic that is not delay tolerant.

17. A user equipment (UE) for wireless communication, comprising:
a memory; and
one or more processors, coupled to the memory, configured to:
establish a communication connection with a serving cell associated with a first discontinuous reception (DRX) cycle configuration;
identify a time period after a start of a first on duration of a first DRX cycle indicated by the first DRX cycle configuration;
determine an autonomous measurement gap, associated with a neighboring cell, based at least in part on determining that:
the time period has passed, or
the UE has transitioned from an active state of the first DRX cycle to an inactive state of the first DRX cycle; and

perform a measurement of the neighboring cell during the autonomous measurement gap.

18. The UE of claim 17 , wherein the serving cell includes a first serving cell associated with the first DRX cycle configuration and a second serving cell associated with a second DRX cycle configuration, and
wherein the autonomous measurement gap associated with the neighboring cell is determined further based at least in part on a second on duration of a second DRX cycle indicated by the second DRX cycle configuration.

19. The UE of claim 18 , wherein, to determine the time period, the one or more processors are configured to:
determine the time period based at least in part on the first DRX cycle configuration.

20. The UE of claim 18 , wherein, to determ

Assignees

• Qualcomm Inc

Inventors

• Ciftcioglu Ertugrul Necdet
• Banister Brian Clarke
• Santhanam Arvind Vardarajan
• Singh Sumit Kumar
• Umatt Bhupesh Manoharlal
• Dutta Himanshu
• Sivakumar Preeti
• Hingorani Vishal
• Kadavakuduru Prem Swaroop

Classifications

• H04W52/0216 Primary

  using a pre-established activity schedule, e.g. traffic indication frame · CPC title

• H04W76/16

  Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer · CPC title

• H04W76/28 Primary

  Discontinuous transmission [DTX]; Discontinuous reception [DRX] · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04W36/0088

  Scheduling hand-off measurements · CPC title