Methods, apparatus and systems for determining a power headroom for an uplink transmission
Methods, apparatus and systems for determining a power headroom for an uplink transmission are disclosed. In one embodiment, a method performed by a wireless communication device is disclosed. The method comprises: determining a configuration of at least one power control parameter from a plurality of candidate configurations; determining, based on the configuration of the at least one power control parameter, a power headroom report (PHR) associated with an uplink transmission from the wireless communication device to a wireless communication node; and generating a power headroom report (PHR) medium access control (MAC) control element (CE) for reporting the PHR to the wireless communication node.
1. A method performed by a wireless communication device, the method comprising:
determining a configuration of at least one power control parameter from a plurality of candidate configurations, wherein the plurality of candidate configurations correspond to a plurality of different application types of uplink transmissions respectively, the configuration corresponding to one of the plurality of different application types;
determining, based on the configuration of the at least one power control parameter, a power headroom report (PHR) associated with an uplink transmission from the wireless communication device to a wireless communication node; and
generating a power headroom report (PHR) medium access control (MAC) control element (CE) for reporting the PHR to the wireless communication node,
wherein a plurality of triggering conditions is configured for the plurality of different application types respectively, wherein one of the plurality of triggering conditions is a highest priority among the plurality of different application types, and
wherein the PHR MAC CE is generated in response to a triggering of the one of the plurality of different application types having the highest priority among the plurality of different application types.
2. The method of claim 1 , wherein the PHR MAC CE comprises at least one indication indicating the configuration of the at least one power control parameter and/or an application type of the plurality of different application types corresponding to the configuration.
3. The method of claim 2 , wherein:
the at least one indication is represented by at least one bit in a PHR MAC CE.
4. The method of claim 1 , wherein the configuration of the at least one power control parameter is determined based on a semi-static configuration by the wireless communication node or based on a system pre-definition.
5. The method of claim 1 , wherein the configuration of the at least one power control parameter is determined based on an application type of the plurality of different application types corresponding to a physical uplink shared channel (PUSCH) carrying the PHR.
6. The method of claim 1 , wherein the configuration of the at least one power control parameter is determined based on whether the PHR is an actual PHR or a virtual PHR.
7. The method of claim 1 , wherein the configuration of the at least one power control parameter is determined based on:
a time of receiving a downlink control information (DCI) for scheduling an uplink transmission;
a predetermined number of time units before a starting symbol of a configured grant uplink transmission;
whether each uplink transmission overlaps at least partially with a target PUSCH carrying the PHR;
whether each uplink transmission overlaps at least partially with a time unit where the target PUSCH carrying the PHR is located;
a transmission time for each uplink transmission; and/or
an application type associated with each uplink transmission.
8. The method of claim 1 , wherein:
the plurality of triggering conditions configured for the plurality of different application types further comprises:
an application type is a default application type that is determined based on a semi-static configuration by the wireless communication node or based on a system pre-definition,
an application type has the highest priority among the plurality of different application types priority and priorities of the plurality of different application types are determined based on a semi-static configuration by the wireless communication node or based on a system pre-definition,
the PHR is an only actual PHR among PHRs of the plurality of different application types,
an application type is a default application type, which is among application types with actual PHRs in the plurality of different application types and is determined based on a semi-static configuration by the wireless communication node or based on a system pre-definition, and/or
an application type has a highest priority among application types with actual PHRs in the plurality of different application types, wherein priorities of the plurality of different application types are determined based on a semi-static configuration by the wireless communication node or based on a system pre-definition.
9. A method performed by a wireless communication node, the method comprising:
determining a plurality of candidate configurations for at least one power control parameter for a wireless communication device, wherein the plurality of candidate configurations correspond to a plurality of different application types of uplink transmissions respectively, wherein at least two of the plurality of different application types have different priorities from each other; and
receiving, from the wireless communication device, a power headroom report (PHR) medium access control (MAC) control element (CE) comprising a PHR associated with an uplink transmission from the wireless communication device, wherein the PHR is determined based on a configuration among the plurality of candidate configurations,
wherein a plurality of triggering conditions is configured for a plurality of application types respectively, wherein one of the plurality of triggering conditions is a highest priority among the plurality of different application types, and
wherein the PHR MAC CE is generated in response to a triggering of the one of the plurality of different application types having the highest priority among the plurality of different application types.
10. The method of claim 9 , wherein the PHR MAC CE comprises at least one indication indicating the configuration of the at least one power control parameter and/or an application type of the plurality of different application types corresponding to the configuration.
11. The method of claim 10 , wherein:
the at least one indication is represented by at least one bit in a PHR MAC CE.
12. The method of claim 9 , wherein the configuration of the at least one power control parameter is determined based on a semi-static configuration by the wireless communication node or based on a system pre-definition.
13. The method of claim 9 , wherein the configuration of the at least one power control parameter is determined based on an application type of the plurality of different application types corresponding to a physical uplink shared channel (PUSCH) carrying the PHR.
14. The method of claim 9 , wherein the configuration of the at least one power control parameter is determined based on whether the PHR is an actual PHR or a virtual PHR.
15. The method of claim 9 , wherein the configuration of the at least one power control parameter is determined based on:
a time of receiving a downlink control information (DCI) for scheduling an uplink transmission;
a predetermined number of time units before a starting symbol of a configured grant uplink transmission;
whether each uplink transmission overlaps at least partially with a target PUSCH carrying the PHR;
whether each uplink transmission overlaps at least partially with a time unit where the target PUSCH carrying the PHR is located;
a transmission time for each uplink transmission; and/or
an application type associated with each uplink transmission.
16. A wireless communication device comprising:
a memory storing a plurality of instructions; and
a processor configured to execute the plurality of instructions, and upon execution of the plurality of instructions, is configured to:
determine a configuration of at least one power control parameter from a plurality of candidate configurations, wherein the plurality of candidate configurations correspond to a plurality of different application types of uplink transmissions respectively, the configuration corresponding to one of the plurality of different application types;
determine, based on the configuration of the at least one power control parameter, a power headroom report (PHR) associated with an uplink transmission from the wireless communication device to a wireless communication node; and
generate a power headroom report (PHR) medium access control (MAC) control element (CE) for reporting the PHR to the wireless communication node,
wherein a plurality of triggering conditions is configured for the plurality of different application types respectively, wherein one of the plurality of triggering conditions is a highest priority among the plurality of different application types, and
wherein the PHR MAC CE is generated in response to a triggering of the one of the plurality of different application types having the highest priority among the plurality of different application types.