Method and apparatus for controlling sidelink and uplink transmissions of NR supporting V2X
The present application is related to a method performed by user equipment (UE). The method includes: determining whether a uplink (UL) transmission and a sidelink (SL) transmission overlap in time domain; and in response to the UL transmission and the SL transmission overlapping in time domain, determining, based on quality of service (QoS) requirements of the UL transmission and the SL transmission, transmitting which one of the UL transmission and the SL transmission and not transmitting the other one of the UL transmission and the SL transmission.
1 . A method performed by a user equipment (UE), the method comprising:
determining that an uplink transmission and a sidelink transmission overlap in a time domain, wherein the uplink transmission includes a media access control-control element of a plurality of media access control-control elements;
determining that the uplink transmission lacks priority based at least in part on a value of a priority level associated with the uplink transmission, wherein the value of the priority level associated with the uplink transmission is associated with an upper layer of the UE;
in response to the uplink transmission and the sidelink transmission overlapping in the time domain and based at least in part on the uplink transmission lacking the priority, determining whether to transmit the uplink transmission or the sidelink transmission based at least in part on a comparison of a value of the priority level associated with the media access control-control element included in the uplink transmission to a first threshold and a value of a priority level associated with the sidelink transmission to a second threshold, wherein the value of the priority level associated with the uplink transmission is different from the first threshold and the second threshold; and
transmitting, based at least in part on the comparison and based at least in part on a delay budget of data for the sidelink transmission being less than a delay budget of data for the uplink transmission, the sidelink transmission and not transmitting the uplink transmission.
2 . The method of claim 1 , wherein a resource type associated with one or more quality of service parameters of the sidelink transmission, and one or more quality of service parameters of the uplink transmission include at least one of a guaranteed bit rate, a delay-critical guaranteed bit rate, or a non-guaranteed bit rate, wherein the plurality of media access control-control elements comprise one or more of a buffer status report media access control-control element, a sidelink buffer status report media access control-control element, a power headroom report, a configured grant confirmation media access control-control element, or a recommended bit rate media access control-control element.
3 . The method of claim 1 , wherein determining whether to transmit the uplink transmission or the sidelink transmission comprises:
comparing one or more quality of service parameters of the uplink transmission and one or more quality of service parameters of the sidelink transmission; and
if the one or more quality of service parameters of the uplink transmission are higher than the one or more quality of service parameters of the sidelink transmission, determining to transmit the uplink transmission and not transmitting the sidelink transmission;
if the one or more quality of service parameters of the sidelink transmission are higher than the one or more quality of service parameters of the uplink transmission, transmitting the sidelink transmission and not transmitting the uplink transmission; or
in response to the one or more quality of service parameters of the uplink transmission being the same as the one or more quality of service parameters of the sidelink transmission, further determining whether to transmit the uplink transmission or the sidelink transmission based at least in part on one or more other conditions.
4 . The method of claim 3 , wherein the determining whether to transmit the uplink transmission or the sidelink transmission based at least in part on the one or more other conditions comprises:
determining whether the sidelink transmission has a blind retransmission; and
in response to the sidelink transmission having the blind retransmission, determining to transmit the uplink transmission and to not transmit the sidelink transmission.
5 . The method of claim 3 , wherein the determining whether to transmit the uplink transmission or the sidelink transmission based at least in part on the one or more other conditions comprises:
transmitting the sidelink transmission and not transmitting the uplink transmission based at least in part on determining that the sidelink transmission has enabled feedback based at least in part on a hybrid automatic repeat request retransmission and has been retransmitted a lower number of times than the uplink transmission.
6 . The method of claim 1 , wherein the determining whether to transmit the uplink transmission or the sidelink transmission comprises:
in response to the value of the priority level associated with the media access control-control element included in the uplink transmission being less than the first threshold, determining to transmit the uplink transmission and not transmitting the sidelink transmission, wherein the priority level associated with the media access control-control element included in the uplink transmission is associated with one or more quality of service parameters associated with the media access control-control element or configured by a base station;
in response to the value of the priority level associated with the media access control-control element included in the uplink transmission being greater than the first threshold and the value of the priority level associated with the sidelink transmission being less than the second threshold, transmitting the sidelink transmission and not transmitting the uplink transmission, wherein the priority level associated with the sidelink transmission is associated with one or more quality of service parameters of the sidelink transmission or configured by the base station; or
in response to the value of the priority level associated with the sidelink transmission being greater than the second threshold, determining to transmit the uplink transmission and not transmitting the sidelink transmission, wherein the priority level associated with the sidelink transmission is associated with the one or more quality of service parameters of the sidelink transmission or configured by the base station.
7 . The method of claim 1 , wherein the determining whether to transmit the uplink transmission or the sidelink transmission comprises:
determining whether the uplink transmission contains one or more specific logical channels;
in response to the uplink transmission containing the one or more specific logical channels, determining to transmit the uplink transmission and to not transmit the sidelink transmission;
in response to the uplink transmission not containing the one or more specific logical channels, comparing the value of the priority level of the sidelink transmission to the first threshold, wherein the priority level associated with the sidelink transmission is associated with one or more quality of service parameters of the sidelink transmission or configured by a base station; and
in response to the value of the priority level associated with the sidelink transmission being less than the first threshold, transmitting the sidelink transmission and not transmitting the uplink transmission; or
in response to the value of the priority level associated with the sidelink transmission being greater than the first threshold, determining to transmit the uplink transmission and to not transmit the sidelink transmission.
8 . The method of claim 1 , wherein the determining whether to transmit the uplink transmission or the sidelink transmission comprises:
determining whether the uplink transmission comprises a scheduling request; and
in response to the uplink transmission comprising the scheduling request, determining, based at least in part on a quality of service requirement of the scheduling request and one or more quality of service parameters of the sidelink transmission, determining to transmit one of the uplink transmission or the sidelink transmission and to not transmit the other one of the uplink transmission or the sidelink transmission.
9 . The method of claim 1 , wherein transmitting the sidelink transmission and not transmitting the uplink transmission is based at least in part on the sidelink transmission having been retransmitted fewer times than the uplink transmission.
10 . A processor for wireless communication, comprising:
at least one controller coupled with at least one memory and operable to cause the processor to:
determine that an uplink transmission and a sidelink transmission overlap in a time domain, wherein the uplink transmission includes a media access control-control element of a plurality of media access control-control elements;
determine that the uplink transmission lacks priority based at least in part on a value of a priority level associated with the uplink transmission;
in response to the uplink transmission and the sidelink transmission overlapping in the time domain and based at least in part on the uplink transmission lacking the priority, the uplink transmission based at least in part on the uplink transmission lacking priority, determine whether to transmit the uplink transmission or the sidelink transmission based at least in part on a comparison of a value of the priority level associated with the media access control-control element included in the uplink transmission to a first threshold and a value of a priority level associated with the sidelink transmission to a second threshold, wherein the value of the priority level associated with the uplink transmission is different from the first threshold and the second threshold; and
transmit, based at least in part on the comparison and based at least in part on a delay budget of data for the sidelink transmission being less than a delay budget of data for the uplink transmission, the sidelink transmission and not transmitting the uplink transmission.
11 . A user equipment (UE) for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured operable to cause the UE to:
determine that an uplink transmission and a sidelink transmission overlap in a time domain, the uplink transmission including a media access control-control element of a plurality of media access control-control elements;
determine that the uplink transmission lacks priority based at least in part on a value of a priority level associated with the uplink transmission, wherein the value of the priority level associated with the uplink transmission is associated with an upper layer of the UE;
in response to the uplink transmission and the sidelink transmission overlapping in the time domain and based at least in part on the uplink transmission lacking the priority, determining whether to transmit the uplink transmission or the sidelink transmission based at least in part on a comparison of a value of the priority level associated with the media access control-control element included in the uplink transmission to a first threshold and a value of a priority level associated with the sidelink transmission to a second threshold, wherein the value of the priority level associated with the uplink transmission is different from the first threshold and the second threshold; and
transmit, based at least in part on the comparison and based at least in part on a delay budget of data for the sidelink transmission being less than a delay budget of data for the uplink transmission, the sidelink transmission and not transmit the uplink transmission.
12 . The UE of claim 11 , wherein a resource type associated with one or more quality of service parameters of the sidelink transmission and one or more quality of service parameters of the uplink transmission include at least one of a guaranteed bit rate, a delay-critical guaranteed bit rate, or a non-guaranteed bit rate.
13 . The UE of claim 11 , wherein to determine whether to transmit the uplink transmission or the sidelink transmission, the at least one processor is configured to cause the UE to:
compare one or more quality of service parameters of the uplink transmission and one or more quality of service parameters of the sidelink transmission; and
determine to transmit the uplink transmission and not the sidelink transmission if the one or more quality of service parameters of the uplink transmission are higher than the one or more quality of service parameters of the sidelink transmission;
transmit the sidelink transmission and not the uplink transmission if the one or more quality of service parameters of the sidelink transmission are higher than the one or more quality of service parameters of the uplink transmission; or
further determine whether to transmit the uplink transmission or the sidelink transmission based at least in part on one or more other conditions if the one or more quality of service parameters of the uplink transmission and the one or more quality of service parameters of the sidelink transmission are the same.
14 . The UE of claim 13 , wherein to determine whether to transmit the uplink transmission or the sidelink transmission based at least in part on the one or more other conditions, the at least one processor is configured to cause the UE to:
determine whether the sidelink transmission has a blind retransmission; and
in response to the sidelink transmission having the blind retransmission, determine to transmit the uplink transmission and not the sidelink transmission.
15 . The UE of claim 13 , wherein to determine whether to transmit the uplink transmission or the sidelink transmission based at least in part on the one or more other conditions, the at least one processor is configured to cause the UE to:
transmit the sidelink transmission and not transmit the uplink transmission based at least in part on determining that the sidelink transmission has enabled feedback based at least in part on hybrid automatic repeat request retransmission and has been retransmitted a lower number of times than the uplink transmission.
16 . The UE of claim 11 , wherein to determine whether to transmit the uplink transmission or the sidelink transmission, the at least one processor is configured to cause the UE to:
determine to transmit the uplink transmission and not the sidelink transmission if the value of the priority level associated with the media access control-control element included in the uplink transmission is less than the first threshold, wherein the priority level associated with the media access control-control element included in the uplink transmission is associated with one or more quality of service parameters associated with the media access control-control element or configured by a base station; and
transmit the sidelink transmission and not the uplink transmission if the value of the priority level associated with the media access control-control element included in the uplink transmission is greater than the first threshold and the value of the priority level associated with the sidelink transmission is less than the second threshold, wherein the priority level associated with the sidelink transmission is associated with one or more quality of service parameters of the sidelink transmission or configured by the base station; or
determine to transmit the uplink transmission and not the sidelink transmission if the value of the priority level associated with the sidelink transmission is greater than the second threshold, wherein the priority level associated with the sidelink transmission is associated with the one or more quality of service parameters of the sidelink transmission or configured by the base station.
17 . The UE of claim 11 , wherein to determine whether to transmit the uplink transmission or the sidelink transmission, the at least one processor is configured to cause the UE to:
determine whether the uplink transmission contains one or more specific logical channels;
determine to transmit the uplink transmission and not the sidelink transmission if the uplink transmission contains the one or more specific logical channels;
compare the value of the priority level associated with the sidelink transmission to the first threshold based at least in part on the uplink transmission not containing the one or more specific logical channels, wherein the priority level associated with the sidelink transmission is associated with one or more quality of service parameters of the sidelink transmission or configured by a base station; and
transmit the sidelink transmission and not the uplink transmission if the value of the priority level associated with the sidelink transmission is less than the first threshold; or
determine to transmit the uplink transmission and not the sidelink transmission if the value of the priority level associated with the sidelink transmission is greater than the first threshold.
18 . The UE of claim 11 , wherein to determine whether to transmit the uplink transmission or the sidelink transmission, the at least one processor is configured to cause the UE to:
determine whether the uplink transmission comprises a scheduling request; and
in response to the uplink transmission comprising the scheduling request, determine, based at least in part on a quality of service requirement of the scheduling request and one or more quality of service parameters of the sidelink transmission, to transmit one of the uplink transmission or the sidelink transmission and not transmit the other one of the uplink transmission or the sidelink transmission.
19 . A method performed by a base station user equipment (UE), the method comprising:
determining that an uplink transmission and a sidelink transmission overlap in a time domain, wherein the uplink transmission includes a media access control-control element of a plurality of media access control-control elements;
determining that the uplink transmission lacks priority based at least in part on a value of a priority level associated with the uplink transmission;
in response to the uplink transmission and the sidelink transmission overlapping in the time domain and based at least in part on the uplink transmission lacking the priority, the uplink transmission based at least in part on the uplink transmission lacking priority, determining whether to transmit the uplink transmission or the sidelink transmission based at least in part on a comparison of a value of the priority level associated with the media access control-control element included in the uplink transmission to a first threshold and a value of a priority level associated with the sidelink transmission to a second threshold, wherein the value of the priority level associated with the uplink transmission is different from the first threshold and the second threshold; and
transmitting, based at least in part on the comparison and based at least in part on the sidelink transmission being retransmitted fewer times than the uplink transmission, the sidelink transmission and not transmitting the uplink transmission.
20 . The method of claim 19 , wherein transmitting the sidelink transmission and not transmitting the uplink transmission is based at least in part on the sidelink transmission having enabled feedback based at least in part on a hybrid automatic repeat request retransmission.