Enhanced autonomous uplink timing adjustment
A method for enhanced autonomous uplink timing adjustment includes determining that a user equipment (UE) is traveling above a predetermined velocity. In response to the determination that the UE is traveling above the predetermined velocity, a maximum aggregate adjustment rate to an uplink timing for the UE and a maximum amount of a magnitude of a timing change to the uplink timing for the UE are determined. The uplink timing for the UE is adjusted based on the maximum aggregate adjustment rate and the maximum amount of the magnitude of the timing change.
1. A method, comprising:
receiving, from an access node, a high-speed configuration;
determining a time adjustment to an uplink timing for a device based at least in part on the high-speed configuration, wherein the time adjustment is greater than 3.5 times a basic time unit for a network configured with a downlink bandwidth greater than or equal to 10 megahertz (MHz); and
transmitting an uplink transmission based at least in part on the determined time adjustment to the uplink timing.
2. The method of claim 1 , wherein receiving the high-speed configuration comprises determining that the device is traveling above a predetermined velocity.
3. The method of claim 2 , wherein the determination that the device is traveling above the predetermined velocity is based on data from one or more sensors coupled to the device.
4. The method of claim 1 , wherein the high-speed configuration received from the access node comprises a highSpeedEnhancedMeasFlag.
5. The method of claim 1 , wherein the high-speed configuration received from the access node comprises a SCCmeasurementEnhancements-r16 flag.
6. The method of claim 1 , wherein the high-speed configuration received from the access node is received via radio resource control (RRC) signaling or medium access control (MAC) signaling.
7. The method of claim 1 , wherein the high-speed configuration received from the access node is transmitted in response to determining that the device is traveling above a predetermined velocity based on one or more uplink transmissions.
8. The method of claim 1 , wherein the time adjustment is within a maximum amount of a magnitude of a single autonomous time adjustment to the uplink timing by the device.
9. The method of claim 1 , wherein the time adjustment is greater than 5.5 times a basic time unit for a network configured with a downlink bandwidth greater than 5 megahertz (MHz).
10. A device, comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
receiving, from an access node, an indication of a high-speed configuration for a device;
determining a time adjustment to an uplink timing for the device based at least in part on the indication of the high-speed configuration for the device, wherein the time adjustment is greater than 3.5 times a basic time unit for a network configured with a downlink bandwidth greater than or equal to 10 megahertz (MHz); and
transmitting an uplink transmission by the device based at least in part on the determined time adjustment to the uplink timing.
11. The device of claim 10 , wherein receiving the indication of the high-speed configured for the device comprises determining that the device is traveling above a predetermined velocity.
12. The device of claim 10 , wherein the indication from the AN comprises a highSpeedEnhancedMeasFlag.
13. The device of claim 10 , wherein the time adjustment is greater than 5.5 times a basic time unit for a network configured with a downlink bandwidth greater than 5 megahertz (MHz).
14. An access node (AN), comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
transmitting a high-speed configuration for a device; and
receiving an uplink transmission from the device, wherein the uplink transmission is transmitted based on the uplink timing associated with a time adjustment that is determined based at least in part on the high-speed configuration, and wherein the time adjustment is greater than 3.5 times a basic time unit for a network configured with a downlink bandwidth greater than or equal to 10 megahertz (MHz).
15. The AN of claim 14 , wherein the time adjustment is greater than 5.5 times a basic time unit for a network configured with a downlink bandwidth greater than 5 megahertz (MHz).
16. The device of claim 10 , wherein the device comprises a user equipment (UE).
17. The device of claim 10 , wherein the device is a baseband processor.