L1 signaling for scell dormancy indication
A method, system and apparatus are disclosed. According to one or more embodiments, a wireless device configured to communicate with a network node is provided. The wireless device includes processing circuitry configured to: receive downlink control information, DCI, from a primary cell, Pcell; determine that at least one bitfield in the DCI indicates a secondary cell Scell, dormancy; and cause the wireless device to transition the Scell from one of to and from a dormant state based on the at least one bitfield, a timing of the transition being based on a numerology of at least one of the Pcell and Scell.
1. A method for a wireless device that is configured to communicate with a network node, the method comprising:
receiving downlink control information, DCI, from a primary cell, Pcell; and
determining that a first bitfield in the DCI is set to a specific value, and when the first bitfield in the DCI is set to the specific value:
determining that at least one second bitfield in the DCI is used to indicate a secondary cell, Scell, dormancy; and
causing the wireless device to transition the Scell from one of to and from a dormant state based on the at least one second bitfield.
2. The method of claim 1 , wherein the at least one second bitfield in the DCI is one of:
set to a first value to indicate to transition to the dormant state; and
set to a second value to indicate to transition from the dormant state, the first value being different from the second value.
3. The method of claim 1 , wherein determining that the first bitfield in the DCI is set to a specific value is based at least in part on the first bitfield in the DCI being set to one of:
a first value for a type 1 resource allocation; and
a second value for a type 0 resource allocation.
4. The method of claim 3 , further comprising interpreting the at least one second bitfield in the DCI based at least on a value indicated by the first bitfield in the DCI.
5. The method of claim 3 , wherein the first bitfield in the DCI is a frequency domain resource allocation, FDRA, field.
6. The method of claim 1 , wherein the at least one second bitfield in the DCI includes at least one of a modulation and coding scheme bitfield, a new data indicator bitfield, a redundancy version bitfield, Hybrid Automatic Repeat Request, HARQ, process number bitfield, antenna port bitfield and demodulation reference signal, DMRS, sequence initialization bitfield.
7. The method of claim 1 , further comprising determining that the DCI does not schedule a physical downlink shared channel, PDSCH, for the wireless device.
8. The method of claim 1 , wherein the transition of one of to and from a dormant state corresponds to one of:
a transition from a non-dormant bandwidth part, BWP, to a dormant BWP; and
a transition from the dormant BWP to the non-dormant BWP.
9. The method of claim 8 , wherein a dormant BWP corresponds to a BWP, on the activated Scell, on which physical downlink control channel, PDCCH, monitoring is not performed by the wireless device.
10. The method of claim 1 , wherein the Scell dormancy indication indicates a plurality of configured Scell groups, each bit in the Scell dormancy indication corresponding to a respective Scell group of the plurality of configured Scell groups.
11. A method for a network node that is configured to communicate with a wireless device, the method comprising:
transmitting, via a primary cell, Pcell, downlink control information, DCI, including:
a first bitfield in the DCI set to a specific value; and
at least one second bitfield used to indicate a secondary cell, Scell, dormancy, the at least one bitfield configured to at least in part cause the wireless device to transition the Scell from one of to and from a dormant state.
12. The method claim 11 , further comprising setting the at least one second bitfield in the DCI to one of:
a first value to indicate to transition to the dormant state; and
a second value to indicate to transition from the dormant state, the first value being different from the second value.
13. The method of claim 11 , wherein the first bitfield in the DCI is set to:
a first value for a type 1 resource allocation; and
a second value for a type 0 resource allocation.
14. The method of claim 13 , wherein the at least one second bitfield in the DCI is configured to be interpreted based at least on a value indicated by the first bitfield in the DCI.
15. The method of claim 11 , wherein the at least one second bitfield in the DCI includes at least one of a modulation and coding scheme bitfield, a new data indicator bitfield, a redundancy version bitfield, Hybrid Automatic Repeat Request, HARQ, process number bitfield, antenna port bitfield and demodulation reference signal, DMRS, sequence initialization bitfield.
16. The method of claim 11 , wherein the DCI does not schedule a physical downlink shared channel, PDSCH, for the wireless device.
17. The method of claim 11 , wherein the transition of one of to and from the dormant state corresponds to one of:
a transition from a non-dormant bandwidth part, BWP, to a dormant BWP; and
a transition from the dormant BWP to the non-dormant BWP.
18. The method of claim 17 , wherein a dormant BWP corresponds to a BWP, on the activated Scell, on which physical downlink control channel, PDCCH, monitoring is not performed by the wireless device.
19. The method of claim 11 , wherein the Scell dormancy indication indicates a plurality of configured Scell groups, each bit in the Scell dormancy indication corresponding to a respective Scell group of the plurality of configured Scell groups.
20. A wireless device configured to communicate with a network node, the wireless device comprising:
processing circuitry configured to:
receive downlink control information, DCI, from a primary cell, Pcell; and
determine that a first bitfield in the DCI is set to a specific value, and when the first bitfield in the DCI is set to the specific value:
determine that at least one second bitfield in the DCI is used to indicate a secondary cell Scell, dormancy; and
cause the wireless device to transition the Scell from one of to and from a dormant state based on the at least one second bitfield.