Serving cell activation and deactivation
A method, system and apparatus are disclosed. According to one or more embodiments, a method is performed by a wireless device The method includes: determining an activation or a deactivation of a first serving cell associated with a first physical channel; sending a corresponding Hybrid Automatic Repeat reQuest, HARQ, acknowledgment, ACK, in a second physical channel, a subcarrier spacing configuration of the first physical channel being different from a subcarrier spacing of the second physical channel; and performing a procedure related to the first serving cell based at least in part on a time offset, k, the time offset, k, being based at least in part on a reference physical channel.
1. A method implemented by a wireless device, the method comprising:
determining a deactivation of a first serving cell associated with a first physical channel, the deactivation being based on one of two different time offsets for applying serving cell deactivation actions for the first serving cell:
a first time offset being used when the first serving cell is deactivated using an explicit deactivation command; and
a second time offset being used when the first serving cell being is deactivated upon expiration of a deactivation timer, the first serving cell being a secondary serving cell;
sending, when the first serving cell is deactivated using an explicit deactivation command, a corresponding Hybrid Automatic Repeat reQuest, HARQ, acknowledgment, ACK, in a second physical channel, a subcarrier spacing configuration of the first physical channel being different from a subcarrier spacing configuration of the second physical channel; and
performing a procedure related to the first serving cell based at least in part on the first time offset when the cell is deactivated using the explicit deactivation command and the second time offset when the cell is deactivated upon expiration of the deactivation timer, the first time offset being based at least in part on the subcarrier spacing configuration of the second physical channel, and the second time offset being based at least in part on information related to a physical channel of a scheduling cell of the first serving cell for which the deactivation timer expires.
2. The method of claim 1 , wherein the first physical channel is a physical downlink shared channel, PDSCH, and the second physical channel is a physical uplink control channel, PUCCH.
3. The method of claim 1 , wherein the procedure related to the first serving cell comprises stopping at least one of channel state information, CSI, reporting, physical downlink control channel, PDCCH, monitoring and sounding reference signal, SRS, transmission on the first serving cell in response to receiving the command for deactivation of the first serving cell.
4. A method implemented in a network node configured to communicate with a wireless device, the method comprising:
determining a deactivation of a first serving cell associated with a first physical channel, the deactivation being based on one of two different time offsets for applying serving cell deactivation actions for the first serving cell:
a first time offset being used when the first serving cell is deactivated using an explicit deactivation command; and
a second time offset being used when the first serving cell is deactivated upon expiration of a deactivation timer, the first serving cell being a secondary serving cell; and
receiving, when the first serving cell is deactivated using an explicit deactivation command, a corresponding Hybrid Automatic Repeat reQuest, HARQ, acknowledgment, ACK, in a second physical channel, a subcarrier spacing configuration of the first physical channel being different from a subcarrier spacing configuration of the second physical channel, and the deactivation of the first serving cell initiating a procedure related to the first serving cell, the procedure being based at least in part on the first time offset when the cell is deactivated using the explicit deactivation command and the second time offset when the cell is deactivated upon expiration of the deactivation timer, the first time offset being based at least in part on the subcarrier spacing configuration of the second physical channel, and the second time offset being based at least in part on information related to a physical channel of a scheduling cell of the first serving cell for which the deactivation timer expires.
5. The method of claim 4 , wherein the first physical channel is a physical downlink shared channel, PDSCH, and the second physical channel is a physical uplink control channel, PUCCH.
6. The method of claim 4 , wherein the procedure related to the first serving cell comprises the wireless device stopping at least one of channel state information, CSI, reporting, physical downlink control channel, PDCCH, monitoring and sounding reference signal, SRS, transmission on the first serving cell in response to the command for deactivation of the first serving cell.
7. A wireless device configured to communicate with a network node, the wireless device comprising processing circuitry, the processing circuitry configured to cause the wireless device to:
determine a deactivation of a first serving cell associated with a first physical channel, the deactivation being based on one of two different time offsets for applying serving cell deactivation actions for the first serving cell;
a first time offset being used when the first serving cell is deactivated using an explicit deactivation command; and
a second time offset being used when the first serving cell is deactivated upon expiration of a deactivation timer, the first serving cell being a secondary serving cell;
send, when the first serving cell is deactivated using an explicit deactivation command, a corresponding Hybrid Automatic Repeat reQuest, HARQ, acknowledgment, ACK, in a second physical channel, a subcarrier spacing configuration of the first physical channel being different from a subcarrier spacing configuration of the second physical channel; and
perform a procedure related to the first serving cell based at least in part on the first time offset when the cell is deactivated using the explicit deactivation command and the second time offset when the cell is deactivated upon expiration of the deactivation timer, the first time offset being based at least in part on the subcarrier spacing configuration of the second physical channel, and the second time offset being based at least in part on information related to a physical channel of a scheduling cell of the first serving cell for which the deactivation timer expires.
8. A network node configured to communicate with a wireless device, the network node comprising processing circuitry, the processing circuitry configured to cause the network node to:
determine a deactivation of a first serving cell associated with a first physical channel, the deactivation being based on one of two different time offsets for applying serving cell deactivation actions for the first serving cell:
a first time offset being used when the first serving cell is deactivated using an explicit deactivation command; and
a second time offset being used when the first serving cell is deactivated upon expiration of a deactivation timer, the first serving cell being a secondary serving cell; and
receive, when the first serving cell is deactivated using an explicit deactivation command, a corresponding Hybrid Automatic Repeat reQuest, HARQ, acknowledgment, ACK, in a second physical channel, a subcarrier spacing configuration of the first physical channel being different from a subcarrier spacing configuration of the second physical channel, and the deactivation of the first serving cell initiating a procedure related to the first serving cell, the procedure being based at least in part on the first time offset when the cell is deactivated using the explicit deactivation command and the second time offset when the cell is deactivated upon expiration of the deactivation timer, the first time offset being based at least in part on the subcarrier spacing configuration of the second physical channel, and the second time offset being based at least in part on information related to a physical channel of a scheduling cell of the first serving cell for which the deactivation timer expires.
9. The method of claim 1 , where the second time offset is a fixed value.
10. The method of claim 1 , wherein the second time offset is a pre-defined number of slots per subframe for a subcarrier spacing, SCS, configuration.
11. The method of claim 4 , where the second time offset is a fixed value.
12. The method of claim 4 , wherein the second time offset is a pre-defined number of slots per subframe for a subcarrier spacing, SCS, configuration.