Validation for pre-configured uplink resource
Aspects relate to validating a pre-configured uplink resource (PUR) occasion. For example, prior to using a PUR occasion for an uplink transmission, a user equipment (UE) may perform a validation procedure for the PUR occasion. A validation procedure for a PUR occasion may involve ensuring that the UE will be able to reliably transmit during the PUR occasion. A base station may send a PUR configuration to the UE that the UE can use for the validation procedure. The PUR configuration may include timing advance (TA) validation information and PUR validation information that depend on at least on capability of the UE.
1 . A user equipment, comprising:
one or more memories that store processor-executable code; and
one or more processors coupled to the one or more memories and configured to execute the processor-executable code and cause the user equipment to:
receive a pre-configured uplink resource (PUR) configuration comprising PUR validation information and timing advance (TA) validation information for a plurality of PUR occasions, wherein the PUR validation information and the TA validation information depend on at least one capability of the user equipment;
perform a validation procedure for a first PUR occasion of the plurality of PUR occasions according to the PUR validation information and the TA validation information,
the validation procedure comprising:
a determination that a switching gap between a first uplink transmission and a first downlink transmission is defined for the user equipment,
a determination whether a first time gap between the first PUR occasion and a last downlink symbol before the first PUR occasion is greater than or equal to a first threshold, and
a determination whether the user equipment has conducted measurements for TA validation prior to the last downlink symbol; and
selectively transmit an uplink transmission during the first PUR occasion according to the validation procedure.
2 . The user equipment of claim 1 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
transmit a PUR configuration request to a network entity; and
receive the PUR configuration from the network entity after transmitting the PUR configuration request.
3 . The user equipment of claim 2 , wherein:
the PUR configuration request indicates the at least one capability of the user equipment;
the PUR configuration includes an uplink bandwidth part configuration that is associated with at least one of: first PUR validation for the plurality of PUR occasions, first TA validation for the plurality of PUR occasions, first transmissions on the plurality of PUR occasions, or a combination thereof; and
the PUR configuration includes a downlink bandwidth part configuration that is associated with at least one of: second PUR validation for the plurality of PUR occasions, second TA validation for the plurality of PUR occasions, second transmissions on the plurality of PUR occasions, or a combination thereof.
4 . The user equipment of claim 1 , wherein:
the plurality of PUR occasions are configured on an uplink bandwidth part indicated by the PUR configuration; and
the one or more processors are further configured to execute the processor-executable code and cause the user equipment to selectively transmit the uplink transmission according to at least one transmission parameter associated with at least one valid PUR occasion of the plurality of PUR occasions.
5 . The user equipment of claim 1 , wherein the PUR validation information comprises at least one of: a resource allocation associated with the plurality of PUR occasions, a transmission parameter associated with the plurality of PUR occasions, an uplink bandwidth part configured for PUR validation for the plurality of PUR occasions, a downlink bandwidth part configured for PUR validation for the plurality of PUR occasions, or a combination thereof.
6 . The user equipment of claim 1 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
receive the PUR configuration via a radio resource control (RRC) message or a medium access control-control element (MAC-CE).
7 . The user equipment of claim 1 , wherein:
the PUR configuration indicates an uplink bandwidth part for the plurality of PUR occasions, whereby the first PUR occasion is in the uplink bandwidth part;
the PUR configuration indicates a downlink bandwidth part for measurements associated with TA validation of the plurality of PUR occasions; and
the one or more processors are further configured to execute the processor-executable code and cause the user equipment to determine that a TA is valid based on whether the user equipment conducted measurements for a TA validation procedure of the validation procedure on the downlink bandwidth part prior to the first PUR occasion in the uplink bandwidth part.
8 . The user equipment of claim 1 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
determine that the first PUR occasion is not valid according to the validation procedure; and
abstain from transmitting the uplink transmission during the first PUR occasion after the determination that the first PUR occasion is not valid.
9 . The user equipment of claim 8 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
after the determination that the first PUR occasion is not valid, determine whether a second PUR occasion of the plurality of PUR occasions is valid.
10 . The user equipment of claim 8 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
after the determination that the first PUR occasion is not valid, abstain from transmitting the uplink transmission during at least one subsequent PUR occasion of the plurality of PUR occasions.
11 . The user equipment of claim 1 , wherein the PUR validation information comprises an indication of a period of time.
12 . The user equipment of claim 1 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
determine that a TA validation for the first PUR occasion failed; and
abstain from validating the first PUR occasion after the determination that the TA validation for the first PUR occasion failed.
13 . The user equipment of claim 12 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
suspend transmissions on the plurality of PUR occasions for a period of time.
14 . The user equipment of claim 1 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
determine that a TA validation for the first PUR occasion passed; and
validate the first PUR occasion after the determination that the TA validation for the first PUR occasion passed.
15 . The user equipment of claim 1 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
determine that a PUR validation for the first PUR occasion failed; and
abstain from performing a TA validation for the first PUR occasion after the determination that the PUR validation for the first PUR occasion failed.
16 . The user equipment of claim 1 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
determine that a PUR validation for the first PUR occasion passed; and
perform a TA validation for the first PUR occasion after the determination that the PUR validation for the first PUR occasion passed.
17 . The user equipment of claim 1 , wherein the PUR validation information is defined for all user equipment under a cell of a network entity.
18 . The user equipment of claim 1 , wherein the first threshold depends on at least one of: a duplex mode, a subcarrier spacing for the first PUR occasion, a capability of the user equipment, or a combination thereof.
19 . The user equipment of claim 1 , wherein the first threshold is a standardized value or the user equipment receives the first threshold from a network entity.
20 . The user equipment of claim 1 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
determine whether the user equipment is operating in a time division duplex (TDD) mode, a full-duplex-frequency division duplex (FD-FDD) mode, or a half-duplex-frequency division duplex (HD-FDD) mode.
21 . The user equipment of claim 1 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
determine whether uplink symbols for the first PUR occasion align with a slot format for a time division duplex (TDD) mode of operation.
22 . The user equipment of claim 1 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
determine whether uplink symbols for the first PUR occasion align with an uplink resource configuration for a half-duplex-frequency division duplex (HD-FDD) mode of operation.
23 . The user equipment of claim 1 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
determine whether a transmission gap between a first-second uplink transmission and a PUR transmission is defined for the user equipment; and
if the transmission gap is defined, determine whether a second time gap between the first PUR occasion and a last uplink symbol before the first PUR occasion is greater than or equal to a second threshold.
24 . The user equipment of claim 23 , wherein the second threshold depends on at least one of: a duplex mode, a subcarrier spacing for the first PUR occasion, the at least one capability of the user equipment, or a combination thereof.
25 . The user equipment of claim 23 , wherein the second threshold is a standardized value or the user equipment receives the second threshold from a network entity.
26 . The user equipment of claim 23 , wherein the one or more processors are further configured to execute the processor-executable code and cause the user equipment to:
determine whether the user equipment is operating in a time division duplex (TDD) mode, a full-duplex-frequency division duplex (FD-FDD) mode, or a half-duplex-frequency division duplex (HD-FDD) mode.
27 . A method for wireless communication at a user equipment, the method comprising:
receiving a pre-configured uplink resource (PUR) configuration comprising PUR validation information and timing advance (TA) validation information for a plurality of PUR occasions, wherein the PUR validation information and the TA validation information depend on at least one capability of the user equipment;
performing a validation procedure for a first PUR occasion of the plurality of PUR occasions according to the PUR validation information and the TA validation information, the validation procedure comprising:
determining that a switching gap between a first uplink transmission and a first downlink transmission is defined for the user equipment,
determining whether a first time gap between the first PUR occasion and a last downlink symbol before the first PUR occasion is greater than or equal to a first threshold, and
determining whether the user equipment has conducted measurements for TA validation prior to the last downlink symbol; and
selectively transmitting an uplink transmission during the first PUR occasion according to the validation procedure.
28 . The method of claim 27 , further comprising:
transmitting a PUR configuration request to a network entity; and
receiving the PUR configuration from the network entity after transmitting the PUR configuration request.
29 . The method of claim 27 , further comprising:
determining that the first PUR occasion is not valid according to the validation procedure; and
abstaining from transmitting the uplink transmission during the first PUR occasion after the determining that the first PUR occasion is not valid.
30 . A user equipment, comprising:
means for receiving a pre-configured uplink resource (PUR) configuration comprising PUR validation information and timing advance (TA) validation information for a plurality of PUR occasions, wherein the PUR validation information and the TA validation information depend on at least one capability of the user equipment;
means for performing a validation procedure for a first PUR occasion of the plurality of PUR occasions according to the PUR validation information and the TA validation information, the validation procedure comprising:
determining that a switching gap between a first uplink transmission and a first downlink transmission is defined for the user equipment,
determining whether a first time gap between the first PUR occasion and a last downlink symbol before the first PUR occasion is greater than or equal to a first threshold, and
determining whether the user equipment has conducted measurements for TA validation prior to the last downlink symbol; and
means for selectively transmitting an uplink transmission during the first PUR occasion according to the validation procedure.