IP Library Granted Patent US 11,558,276
Granted Patent B2
US 11,558,276 · App. 17/314,552 · Granted Jan 17, 2023

Latency prediction and guidance in wireless communication systems

Inventors: Rajarajan Sivaraj (Dublin, CA); Varun Gupta (Morristown, NJ); Dhruv Gupta (San Ramon, CA); Rittwik Jana (Montville, NJ); Jin Wang (Fremont, CA); Laurie Bigler (Lafayette, CA); Weihua Ye (Chicago, IL); Zhengye Liu (Pleasanton, CA)
Assignee: AT&T Intellectual Property I, L.P.
H04L43/0876G06N20/00H04L5/006H04L41/145H04L43/0852
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Quick Facts
Patent No.
US 11,558,276
App. No.
17/314,552
Granted
Jan 17, 2023
Kind
B2
Abstract

The described technology is generally directed towards reducing latency in a wireless communications network. Radio access network latency data corresponding to a measured latency impact criterion is obtained by a network device of a wireless network. Based on the radio access network latency data, latency guidance data usable by the radio network device to achieve a reduction in communication latency that is experienced by a user equipment is predicted, e.g., by a learned model. The latency guidance data can be used to facilitate a reduction in the communication latency that is experienced by a user equipment.

Claims (46)

1. A method, comprising, determining, by network equipment comprising a processor based on radio access network latency data representative of network latency associated with a communication network in which the network equipment operates, predicted latency guidance data comprising a first impact score indicative of a first rate of change of a transmission control protocol round trip time associated with an application, used by a user equipment, relative to the network latency and a second impact score indicative of a second rate of change of a motion-to-photon latency associated with the application relative to the network latency; and

based on the predicted latency guidance data, facilitating, by the network equipment, a reduction in a communication latency that is experienced by the user equipment.

2. The method of claim 1 , wherein the network equipment is first network equipment, and further comprising:

obtaining, by the first network equipment from second network equipment communicatively coupled to the first network equipment, the radio access network latency data according to a measured latency impact criterion.

3. The method of claim 1 , wherein the radio access network latency data comprises data of a type selected from a group of data types comprising spectrum utilization data representative of spectrum utilization by the network equipment, signal quality data representative of a signal quality experienced by the user equipment, cell load data representative of a load level of respective network cell devices in the communication network, and traffic rate data representative of traffic observed by the network equipment.

4. The method of claim 1 , wherein determining the predicted latency guidance data comprises processing the radio access network latency data via a machine-learned model.

5. The method of claim 1 , wherein facilitating the reduction in the communication latency comprises:

generating a load balancing recommendation based on the predicted latency guidance data; and

transmitting, from the network equipment to a radio access network controller of the communication network, the load balancing recommendation.

6. The method of claim 1 , wherein facilitating the reduction in the communication latency comprises:

generating a handoff recommendation based on the predicted latency guidance data, wherein the handoff recommendation relates to a handoff of the user equipment from a first base station of the communication network to a second base station of the communication network; and

transmitting, from the network equipment to a radio access network controller of the communication network, the handoff recommendation.

7. The method of claim 1 , wherein facilitating the reduction in the communication latency comprises:

generating a data scheduling recommendation based on the predicted latency guidance data, the data scheduling recommendation relating to a schedule for communication of data by a base station serving the user equipment; and

transmitting, from the network equipment to the base station serving the user equipment, the data scheduling recommendation.

8. The method of claim 1 , wherein the network equipment is first network equipment, and wherein facilitating the reduction in the communication latency comprises transmitting, from the first network equipment to second network equipment associated with a content provider for the application, the predicted latency guidance data.

9. The method of claim 1 , wherein facilitating the reduction in the communication latency comprises transmitting, from the network equipment to the user equipment, the predicted latency guidance data.

10. The method of claim 1 , wherein facilitating the reduction in the communication latency comprises:

generating a network slicing recommendation based on the predicted latency guidance data; and

transmitting, from the network equipment to a radio access network controller of the communication network, the network slicing recommendation.

11. Network equipment, comprising:

a processor; and

a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising:

applying network latency data representative of network latency in a communication network in which the network equipment operates to a prediction model, resulting in latency guidance data comprising a first impact score indicative of a first rate of change of a transmission control protocol round trip time for an application, associated with a user equipment, relative to the network latency and a second impact score indicative of a second rate of change of a motion-to-photon latency of the application relative to the network latency; and

using the latency guidance data to facilitate a reduction in communication latency experienced by the user equipment in the communication network.

12. The network equipment of claim 11 , wherein the operations further comprise:

obtaining, from a network device communicatively coupled to the network equipment, the network latency data according to a measured latency impact criterion.

13. The network equipment of claim 11 , wherein the network latency data comprises data of a type selected from a group of data types comprising spectrum utilization data representative of spectrum utilization by the network equipment, signal quality data representative of a signal quality experienced by the user equipment, cell load data representative of a load level of respective network cell devices in the communication network, and traffic rate data representative of traffic observed by the network equipment.

14. The network equipment of claim 11 , wherein using the latency guidance data to facilitate the reduction in the communication latency comprises:

generating a load balancing recommendation based on the latency guidance data; and

transmitting the load balancing recommendation to a radio access network controller of the communication network.

15. The network equipment of claim 11 , wherein using the latency guidance data to facilitate the reduction in the communication latency comprises:

generating a data scheduling recommendation based on the latency guidance data, the data scheduling recommendation relating to a schedule for communication of data by a base station serving the user equipment; and

transmitting the data scheduling recommendation to the base station.

16. A non-transitory machine-readable medium comprising executable instructions that, when executed by a processor, facilitate performance of operations, the operations comprising:

processing radio access network latency information representative of latency observed in a communication network, the processing resulting in latency guidance data comprising a first impact score representing a first rate of change of a transmission control protocol round trip time for an application, used by a user equipment in the communication network, relative to the latency observed in the communication network and a second impact score representing a second rate of change of a motion-to-photon latency for the application relative to the latency observed in the communication network; and

enabling, based on the latency guidance data, a reduction in communication latency experienced by the user equipment in connection with usage of the application.

17. The non-transitory machine-readable medium of claim 16 , wherein the operations further comprise:

obtaining, from a message router device in the communication network, the radio access network latency information according to a measured latency impact criterion.

18. The non-transitory machine-readable medium of claim 16 , wherein the radio access network latency information comprises information of a type selected from a group of types comprising spectrum utilization information representative of spectrum utilization by network equipment operating in the communication network, signal quality information representative of a signal quality experienced by the user equipment, cell load information representative of a load level of respective network cell devices in the communication network, and traffic rate information representative of traffic observed by the network equipment.

19. The non-transitory machine-readable medium of claim 16 , wherein the operations further comprise:

generating a handoff recommendation based on the latency guidance data, wherein the handoff recommendation relates to a handoff of the user equipment from a first base station of the communication network to a second base station of the communication network; and

transmitting, to a radio access network controller of the communication network, the handoff recommendation.

20. The non-transitory machine-readable medium of claim 16 , wherein the operations further comprise:

generating a network slicing recommendation based on the latency guidance data; and

transmitting, to a radio access network controller of the communication network, the network slicing recommendation.

Assignments (2)
CORRECTIVE ASSIGNMENT TO CORRECT THE EXECUTION DATE FOR THE 8TH INVENTOR PREVIOUSLY RECORDED AT REEL: 056172 FRAME: 0140. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded May 11, 2021
From: LIU, ZHENGYE
To: AT&T INTELLECTUAL PROPERTY I, L.P.
Reel/Frame 056199/0764 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 7, 2021
From: SIVARAJ, RAJARAJAN; GUPTA, VARUN; GUPTA, DHRUV; JANA, RITTWIK; WANG, JIN; BIGLER, LAURIE; YE, WEIHUA; LIU, ZHENGYE
To: AT&T INTELLECTUAL PROPERTY I, L.P.
Reel/Frame 056172/0140 →
Continuity (2)
Continuation 16220664 · Dec 14, 2018
Related Publication 20210266247A1 · Aug 26, 2021
Cited By (1)
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