Transmission switching on multiple carriers in IoT NTN
Methods and apparatuses for transmission switching on multiple carriers in IoT NTN are disclosed. A method comprises receiving a resource configuration: and transmitting UL signal on a physical resource determined by the resource configuration.
1 . A method performed by a user equipment (UE), the method comprising:
receiving a resource configuration that includes multiple carrier configurations, each carrier configuration including a carrier ID, a beam ID, or a frequency position and one or more satellite configurations, each satellite configuration including a satellite ID, satellite ephemeris, satellite activation timer (P) to a reference time, satellite activation duration (T), satellite initial timing offset (TO), and a TO drift rate; and
transmitting uplink (UL) signal on a physical resource determined by the resource configuration.
2 . The method of claim 1 , wherein each carrier configuration is associated with a carrier activation starting time (Ts) and a carrier activation duration (N0), and the carrier activation starting time is determined by T and a carrier activation time offset (T offset ).
3 . The method of claim 1 , wherein an activated physical resource that has longest remaining T or carrier activation duration (N0) among multiple activated physical resources is determined as the physical resource.
4 . The method of claim 1 , wherein an activated physical resource that has a lowest or a highest carrier index, beam index or satellite index among multiple activated physical resources is determined as the physical resource.
5 . The method of claim 1 , wherein a transmission gap is inserted in response to determining switching of the physical resource.
6 . The method of claim 1 , further comprising:
receiving a control signal, the control signal including at least one of an order of transmission in multiple physical resources, an initial physical resource, or transmission repetition numbers in the multiple physical resources; and
transmitting the UL signal on a physical resource determined by the control signal.
7 . 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 to cause the UE to:
receive a resource configuration that includes multiple carrier configurations, each carrier configuration including a carrier ID, a beam ID, or a frequency position and one or more satellite configurations, each satellite configuration including a satellite ID, satellite ephemeris, satellite activation timer (P) to a reference time, satellite activation duration (T), satellite initial timing offset (TO), and a TO drift rate; and
transmit uplink (UL) signal on a physical resource determined by the resource configuration.
8 . The UE of claim 7 , wherein each carrier configuration is associated with a carrier activation starting time (Ts) and a carrier activation duration (NO), and the carrier activation starting time is determined by T and a carrier activation time offset (T offset ).
9 . The UE of claim 7 , wherein an activated physical resource that has longest remaining T or carrier activation duration (NO) among multiple activated physical resources is determined as the physical resource.
10 . The UE of claim 7 , wherein an activated physical resource that has a lowest or a highest carrier index, beam index or satellite index among multiple activated physical resources is determined as the physical resource.
11 . The UE of claim 7 , wherein a transmission gap is inserted in response to determining switching of the physical resource.
12 . The UE of claim 11 , wherein the transmission gap starts at one of: a time point that is a first duration before an invalidation or expiry of a previous physical resource; a time point on which a previous physical resource becomes invalid or expired; a time point that is a second duration before validation or activation of a later physical resource; or a time point on which the later physical resource becomes valid or activated.
13 . The UE of claim 7 , wherein the at least one processor is configured to cause the UE to:
receive a control signal, the control signal including at least one of an order of transmission in multiple physical resources, an initial physical resource, or transmission repetition numbers in the multiple physical resources; and
transmit the UL signal on a physical resource determined by the control signal.
14 . A base station for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the base station to:
transmit a resource configuration that includes multiple carrier configurations, each carrier configuration including a carrier ID, a beam ID, or a frequency position and one or more satellite configurations, each satellite configuration including a satellite ID, satellite ephemeris, satellite activation timer (P) to a reference time, satellite activation duration (T), satellite initial timing offset (TO), and a TO drift rate; and
receive uplink (UL) signal on a physical resource determined by the resource configuration.
15 . The base station of claim 14 , wherein each carrier configuration is associated with a carrier activation starting time (Ts) and a carrier activation duration (NO), and the carrier activation starting time is determined by T and a carrier activation time offset (T offset ).
16 . The base station of claim 14 , wherein an activated physical resource that has longest remaining T or carrier activation duration (NO) among multiple activated physical resources is determined as the physical resource.
17 . The base station of claim 14 , wherein an activated physical resource that has a lowest or a highest carrier index, beam index or satellite index among multiple activated physical resources is determined as the physical resource.
18 . The base station of claim 14 , wherein a transmission gap is inserted in response to determining switching of the physical resource.
19 . The base station of claim 14 , wherein the at least one processor is configured to cause the base station to:
transmit a control signal, the control signal including at least one of an order of transmission in multiple physical resources, an initial physical resource, or transmission repetition numbers in the multiple physical resources; and
receive the UL signal on a physical resource determined by the control signal.
20 . A method performed by a base station, the method comprising:
transmitting a resource configuration that includes multiple carrier configurations, each carrier configuration including a carrier ID, a beam ID, or a frequency position and one or more satellite configurations, each satellite configuration including a satellite ID, satellite ephemeris, satellite activation timer (P) to a reference time, satellite activation duration (T), satellite initial timing offset (TO), and a TO drift rate; and
receiving uplink (UL) signal on a physical resource determined by the resource configuration.