POWER CONTROL CONFIGURATION FOR UPLINK TRANSMISSIONS

• US 20190159136A1
• Filed: 11/19/2018
• Published: 05/23/2019
• Est. Priority Date: 11/17/2017
• Status: Active Grant

• Current Assignee: Lenovo Singapore Pte Limited (Lenovo Group Ltd.)
• Original Assignee: Lenovo Singapore Pte Limited (Lenovo Group Ltd.)
• Inventors: MolavianJazi, Ebrahim, Jung, Hyejung, Nangia, Vijay
• Granted Patent: US 10,660,044 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04W 52/08 Closed loop power control
• CPC Class Codes: H04W 52/10 Open loop power control
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/242 taking into account path loss
• CPC Class Codes: H04W 52/265 taking into account the quality of service QoS
• CPC Class Codes: H04W 52/281 taking into account user or data type priority
• CPC Class Codes: H04W 52/34 TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
• CPC Class Codes: H04W 52/362 Aspects of the step size
• CPC Class Codes: H04W 52/365 Power headroom reporting
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 52/38 TPC being performed in particular situations
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

Apparatuses, methods, and systems are disclosed for transmission power control. One method includes receiving a first configuration indicating a plurality of bandwidth parts on a first serving cell and configuration information corresponding to the plurality of bandwidth parts. The configuration information comprises an open-loop power control configuration, a closed loop power control configuration, or a combination thereof corresponding to each bandwidth part of the plurality of bandwidth parts. The method comprises receiving scheduling information for a first uplink transmission on a first bandwidth part of the plurality of bandwidth parts. The method comprises determining a first transmission power for the first uplink transmission based on the configuration information and the scheduling information. The method comprises performing the first uplink transmission with the first transmission power.

Claims

1. A method comprising:

receiving a first configuration indicating a plurality of bandwidth parts on a first serving cell and configuration information corresponding to the plurality of bandwidth parts, wherein the configuration information comprises an open-loop power control configuration, a closed loop power control configuration, or a combination thereof corresponding to each bandwidth part of the plurality of bandwidth parts;

receiving scheduling information for a first uplink transmission on a first bandwidth part of the plurality of bandwidth parts;

determining a first transmission power for the first uplink transmission based on the configuration information and the scheduling information; and

performing the first uplink transmission with the first transmission power.

2. The method of claim 1, further comprising triggering a power headroom report in response to an initial configuration of a bandwidth part of the plurality of bandwidth parts.

3. The method of claim 1, wherein the open-loop power control configuration comprises pathloss estimation reference signal information.

4. The method of claim 3, wherein the pathloss estimation reference signal information comprises:

a first set of pathloss estimation reference signals for at least one spatial transmit filter corresponding to a transmitted synchronization signal block or physical broadcast channel;

a second set of pathloss estimation reference signals for at least one spatial transmit filter corresponding to a physical uplink shared channel configuration, at least one configured sounding reference signal resource for physical uplink shared channel transmission, at least one configured sounding reference signal resource for channel state information acquisition, or a combination thereof;

a third set of pathloss estimation reference signals for at least one spatial transmit filter corresponding to at least one channel state information reference signal resource for channel state information acquisition;

a fourth set of pathloss estimation reference signals for at least one spatial transmit filter corresponding to at least one configured sounding reference signal resource for an uplink beam management procedure;

a fifth set of pathloss estimation reference signals for at least one spatial transmit filter corresponding to a physical uplink control channel configuration;

a sixth set of pathloss estimates for at least one network beam configured for a radio link monitoring procedure, a radio link failure procedure, a beam failure recovery procedure, a link recovery procedure, a beam failure detection procedure, a link failure detection procedure, or some combination thereof;

or

some combination thereof.

5. The method of claim 1, wherein a number of pathloss estimation reference signals simultaneously maintained at a user equipment is bounded by a function corresponding to:

a number of transmitted synchronization signal blocks;

a number of physical broadcast channels;

a number equal to a function, multiple, offset, or combination thereof of a number of spatial transmission filters configured for operation;

or

some combination thereof.

6. The method of claim 1, wherein the open loop power control configuration comprises a configuration for:

an enhanced mobile broadband service;

an ultra-reliable low-latency communication service;

two uplinks of a supplementary uplink configuration;

different spatial transmission filters for uplink transmission;

a configured grant operation;

or

some combination thereof.

7. The method of claim 1, wherein a number of uplink power control configurations is bounded by a number of supported traffic types, a number of supported service types, a number of uplinks per serving cell, a number of spatial transmission filters for uplink transmission, a number of configured grant configurations, or some combination thereof.

8. The method of claim 1, wherein the closed loop power control configuration is dependent upon at least a set of spatial transmission filters configured for uplink transmission.

9. The method of claim 1, wherein a same closed loop power control process is configured for a first traffic type, a first service type, or a combination thereof and a second traffic type, a second service type, or a combination thereof, in response to a same spatial transmission filter configuration for both the first traffic type, the first service type, or the combination thereof and the second traffic type, the second service type, or the combination thereof.

10. The method of claim 1, wherein a same closed loop power control process is configured for a first dynamically scheduled uplink transmission and a second configured grant uplink transmission, in response to a same spatial transmission filter configuration for both the first dynamically scheduled uplink transmission and the second configured grant uplink transmission.

11. The method of claim 1, wherein the closed loop power control configuration includes at least one step size for a transmit power control command and at least one application time for the transmit power control command for each closed loop power control configuration of a plurality of closed loop power control configurations.

12. The method of claim 11, wherein the at least one step size for the transmit power control command and the at least one application time for the transmit power control command are configured to be based on a grant type, a service type, a traffic type, or some combination thereof corresponding to each closed loop power control configuration of the plurality of closed loop power control configurations.

13. The method of claim 12, wherein step sizes for the transmit power control command configured for an ultra-reliable low-latency communication service are larger than those configured for an enhanced mobile broadband service.

14. The method of claim 12, wherein application times for the transmit power control command configured for an ultra-reliable low-latency communication service are smaller than those configured for an enhanced mobile broadband service.

15. The method of claim 12, wherein step sizes for the transmit power control command configured for a configured grant uplink transmission are larger than those configured for a dynamically scheduled uplink transmission.

16. The method of claim 12, wherein application times for the transmit power control command configured for a configured grant uplink transmission are smaller than those configured for a dynamically scheduled uplink transmission.

17. The method of claim 1, further comprising receiving a second configuration indicating:

a new spatial transmission filter to be added to a set of configured spatial transmission filters;

a new pathloss estimation reference signal to be added to a set of configured pathloss estimation reference signals;

or a combination thereof.

18. The method of claim 17, wherein a current accumulation status of a closed-loop power control corresponding to an existing spatial transmission filter of the set of configured spatial transmission filters is applied to the new spatial transmission filter in response to the new spatial transmission filter having spatial characteristics, quasi-location information, or a combination thereof similar to the existing spatial transmission filter.

19. The method of claim 17, wherein a current accumulation status of a closed-loop power control corresponding to an existing pathloss estimation reference signal of the set of configured pathloss estimation reference signals is applied to the new pathloss estimation reference signal in response to the new pathloss estimation reference signal having spatial characteristics, quasi-location information, or a combination thereof similar to the pathloss estimation reference signal.

20. The method of claim 1, wherein, in response to a sounding reference signal resource not being tied to a physical uplink shared channel transmission, the closed loop power control configuration comprises one separate closed-loop power control for the sounding reference signal resource.

21. The method of claim 1, wherein, in response to a sounding reference signal resource not being tied to a physical uplink shared channel transmission, the closed loop power control configuration comprises no closed-loop power control for the sounding reference signal resource.

22. The method of claim 1, wherein, in response to:

a first periodic sounding reference signal resource set for uplink beam management and a second aperiodic sounding reference signal resource set for uplink beam management being associated with a same set of spatial transmission filters; and

the closed loop power control configuration comprising a first configured closed loop power control process for the first periodic sounding reference signal resource set;

then the closed loop power control configuration comprises the first configured closed loop power control process for the second aperiodic sounding reference signal resource set.

23. The method of claim 22, wherein the first configured closed loop power control process carries over an accumulated power control adjustment state if switching transmission between the first periodic sounding reference signal resource set and the second aperiodic sounding reference signal resource set.

24. The method of claim 1, wherein, in response to a third aperiodic sounding reference signal resource set for uplink beam management being associated with a different set of spatial transmission filters than those associated with any periodic sounding reference signal resource sets for uplink beam management, the closed loop power control configuration comprises no closed-loop power control for the third aperiodic sounding reference signal resource set.

25. An apparatus comprising:

a receiver that;

receives a first configuration indicating a plurality of bandwidth parts on a first serving cell and configuration information corresponding to the plurality of bandwidth parts, wherein the configuration information comprises an open-loop power control configuration, a closed loop power control configuration, or a combination thereof corresponding to each bandwidth part of the plurality of bandwidth parts; and

receives scheduling information for a first uplink transmission on a first bandwidth part of the plurality of bandwidth parts; and

a processor that;

determines a first transmission power for the first uplink transmission based on the configuration information and the scheduling information; and

performs the first uplink transmission with the first transmission power.