Method and apparatus for vehicle to everything (V2X) communication in a wireless communication system
View Patent ↗A method for vehicle to everything (V2X) communication in a wireless communication system is provided. The method includes receiving, from a first network, first downlink control information (DCI) for scheduling of a sidelink associated with a second network, wherein the first network is associated with a new radio (NR) network and the second network is associated a long term evolution (LTE) network; and performing, based on the first DCI, a sidelink communication; wherein the first DCI is scrambled by a first radio network temporary identity (RNTI) different from a second RNTI scrambling a second DCI, wherein the second DCI is for scheduling of a sidelink associated with the first network, and wherein the first DCI is used to activate or deactivate a semi-persistently scheduled sidelink transmission.
1. A method of operating a user equipment (UE) in a wireless communication system, the method comprising:
receiving, from a new radio (NR) base station, first downlink control information (DCI) for scheduling of a long term evolution (LTE) sidelink (SL); and
performing, based on the first DCI, a transmission of the LTE SL,
wherein the first DCI is scrambled by an LTE-SL-vehicle to everything (V2X)-radio network temporary identity (V-RNTI) different from an RNTI scrambling a second DCI, wherein the second DCI is for scheduling of an NR SL,
wherein the LTE-SL-V-RNTI is used to activate or deactivate a semi-persistently scheduled SL transmission, and
wherein at least one zero bit is added to the second DCI until a payload size of the second DCI equals a payload size of the first DCI based on a number of information bits of the second DCI being less than the payload size of the first DCI.
2. The method of claim 1 , wherein the LTE SL is transmitted at least after an additional time offset from a reception of the first DCI, and
wherein the first DCI comprises information on the additional time offset.
3. The method of claim 1 ,
wherein a power for a uplink transmission is reduced to ensure that a total transmission power of the UE does not exceed P CMAX in case that the LTE SL overlaps an uplink transmission and an SL transmission has a higher priority than a pre-configured threshold.
4. The method of claim 1 ,
wherein a power for an SL transmission is reduced to ensure that the total transmission power of the UE does not exceed P CMAX in case that the SL transmission has a lower priority than a pre-configured threshold.
5. The method of claim 1 ,
wherein the performing of the transmission of the LTE SL further comprises:
in case that the transmission of the LTE SL overlaps a transmission of the NR SL in time, transmitting an SL with a higher priority between the LTE SL and NR SL.
6. The method of claim 5 ,
wherein a priority of the LTE SL and a priority of the NR SL are known at least before the transmission of the LTE SL or the NR SL is performed.
7. A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver; and
at least one processor connected with the transceiver and configured to:
receive, from a new radio (NR) base station, first downlink control information (DCI) for scheduling of a long term evolution (LTE) sidelink (SL), and
perform, based on the first DCI, a transmission of the LTE SL,
wherein the first DCI is scrambled by an LTE-SL-vehicle to everything (V2X)-radio network temporary identity (V-RNTI) different from an RNTI scrambling a second DCI, wherein the second DCI is for scheduling of an NR SL,
wherein the LTE-SL-V-RNTI is used to activate or deactivate a semi-persistently scheduled SL transmission, and
wherein at least one zero bit is added to the second DCI until a payload size of the second DCI equals a payload size of the first DCI based on a number of information bits of the second DCI being less than the payload size of the first DCI.
8. The UE of claim 7 , wherein the LTE SL is transmitted at least after an additional time offset from a reception of the first DCI, and
wherein the first DCI comprises information on the additional time offset.
9. The UE of claim 7 ,
wherein a power for an uplink transmission is reduced to ensure that a total transmission power of the UE does not exceed P CMAX in case that the LTE SL overlaps an uplink transmission and an SL transmission has a higher priority than a pre-configured threshold.
10. The UE of claim 7 ,
wherein a power for an SL transmission is reduced to ensure that the total transmission power of the UE does not exceed P CMAX in case that the SL transmission has a lower priority than a pre-configured threshold.
11. The UE of claim 7 ,
wherein the at least one processor is further configured to:
in case that the transmission of the LTE SL overlaps a transmission of the NR SL in time, transmit an SL with a higher priority between the LTE SL and NR SL.
12. The UE of claim 11 ,
wherein a priority of the LTE SL and a priority of the NR SL are known at least before the transmission of the LTE SL or the NR SL is performed.
13. A method of operating a new radio (NR) base station in a wireless communication system, the NR method comprising:
transmitting first downlink control information (DCI) for scheduling of a long term evolution (LTE) sidelink (SL),
wherein the first DCI is scrambled by an LTE-SL-vehicle to everything (V2X)-radio network temporary identity (V-RNTI) different from an RNTI scrambling a second DCI, wherein the second DCI is for scheduling of an NR SL,
wherein the LTE-SL-V-RNTI is used to activate or deactivate a semi-persistently scheduled SL transmission, and
wherein at least one zero bit is added to the second DCI until a payload size of the second DCI equals a payload size of the first DCI based on a number of information bits of the second DCI being less than the payload size of the first DCI.
14. A new radio (NR) base station in a wireless communication system, the base station comprising:
a transceiver; and
at least one processor connected with the transceiver and configured to:
transmit first downlink control information (DCI) for scheduling of a long term evolution (LTE) sidelink (SL),
wherein the first DCI is scrambled by an LTE-SL-vehicle to everything (V2X)-radio network temporary identity (V-RNTI) different from an RNTI scrambling a second DCI, wherein the second DCI is for scheduling of an NR SL,
wherein the LTE-SL-V-RNTI is used to activate or deactivate a semi-persistently scheduled SL transmission, and
wherein at least one zero bit is added to the second DCI until a payload size of the second DCI equals a payload size of the first DCI based on a number of information bits of the second DCI being less than the payload size of the first DCI.