Configuration schemes for secondary cell, bandwidth part and physical resource block indexing
The disclosure describes configuration schemes for secondary cell (SCell), bandwidth part (BWP) and physical resource block (PRB) indexing. An apparatus of user equipment (UE) for BWP activation and deactivation operation is disclosed. The apparatus includes baseband circuitry that includes a radio frequency (RF) interface, and one or more processors. The one or more processors are to receive radio resource control (RRC) data via the RF interface, configure a timer for a BWP according to the RRC data, and trigger the timer for the BWP in response to detection of an event associated with an access node after the BWP has been activated.
1. A user equipment (UE) for communication with an access node, the UE comprising baseband circuitry including:
a radio frequency (RF) interface; and
one or more processors configured to:
for a secondary cell (SCell) carrier without a synchronization signal block (SSB), receive from the RF interface data that indicates an offset between a reference point and a lowest subcarrier of a reference physical resource block (PRB), wherein the reference PRB is a lowest PRB of a carrier from a perspective of the access node that allocates the SCell carrier to the UE; and
configure data transmission with the access node according to the offset indicated by the received data.
2. The UE of claim 1 , wherein the reference point is a lowest PRB of the SCell carrier from a perspective of the UE.
3. The UE of claim 1 , wherein the reference point is a PRB containing a center frequency of the SCell carrier from the perspective of the access node.
4. The UE of claim 1 , wherein the reference point is a PRB containing a center frequency of the SCell carrier from a perspective of the UE.
5. The UE of claim 1 , wherein the reference point is a PRB containing a direct current (DC) subcarrier.
6. The UE of claim 1 , wherein the reference point is a position of a virtual SSB which is not physically present in the SCell carrier from a perspective of the UE.
7. The UE of claim 1 , wherein the offset defines a common PRB indexing that is common to multiple UEs sharing a wideband component carrier (CC).
8. A method of operating a user equipment (UE) for communication with an access node, comprising:
receiving, for a secondary cell (SCell) carrier without a synchronization signal block (SSB), from a radio frequency (RF) interface, data indicating an offset between a reference point and a lowest subcarrier of a reference physical resource block (PRB), wherein the reference PRB is a lowest PRB of a carrier from a perspective of the access node that allocates the SCell carrier to the UE; and
configuring data transmission with the access node according to the offset indicated by the received data.
9. The method of claim 8 , wherein the reference point is a lowest PRB of the SCell carrier from a perspective of the UE.
10. The method of claim 8 , wherein the reference point is a PRB containing a center frequency of the SCell carrier from the perspective of the access node.
11. The method of claim 8 , wherein the reference point is a PRB containing a center frequency of the SCell carrier from a perspective of the UE.
12. The method of claim 8 , wherein the offset defines a common PRB indexing that is common to multiple UEs sharing a wideband component carrier (CC).