Uplink transmission skipping
A wireless device receives one or more messages. The one or messages comprise: configuration parameters for a plurality of cells comprising a licensed cell and a licensed assisted access (LAA) cell; and one or more skipping parameters indicating uplink transmission skipping is configured. A downlink control information is received indicating an uplink grant for uplink transmission of one or more packets via a first subframe of a first cell in the plurality of cells. The uplink transmission is skipped in response to: the first cell being the licensed cell; and first criteria being met. The one or more packets are transmitted in response to: the first cell being the LAA cell; and the first criteria being met.
1. A method comprising: receiving, by a wireless device, one or more messages comprising:
configuration parameters for a plurality of cells comprising one or more licensed cells and one or more unlicensed cells; and
one or more skipping parameters indicating uplink transmission skipping is configured for the wireless device;
receiving, by the wireless device, a downlink control information indicating an uplink grant for an uplink transmission via a first subframe of a first cell in the plurality of cells; and based on the first cell being an unlicensed cell, transmitting the uplink transmission via the first subframe of the first cell when:
the one or more skipping parameters indicate uplink transmission skipping is configured for the wireless device in the first subframe;
the uplink transmission comprises a medium access control (MAC) packet data unit comprising:
zero MAC service data units; and
a MAC control element (CE) only for a padding buffer status report (BSR) or a periodic BSR; and
no aperiodic channel state information is requested for the first subframe.
2. The method of claim 1 , wherein the uplink transmission comprises one or more medium access control (MAC) packets.
3. The method of claim 1 , wherein the one or more skipping parameters indicate that the uplink transmission skipping is configured for dynamic grants.
4. The method of claim 1 , wherein the transmitting the uplink transmission is further based on a listen before talk (LBT) procedure indicating a clear channel.
5. The method of claim 1 , wherein the uplink grant is a single-subframe grant.
6. The method of claim 1 , wherein the uplink grant is a multi-subframe grant.
7. The method of claim 1 , wherein the one or more skipping parameters indicate that the uplink transmission skipping is configured for semi-persistent scheduling (SPS) grants.
8. The method of claim 7 , wherein the uplink transmission comprises a zero byte medium access control service data unit.
9. The method of claim 7 , wherein the one or more messages comprise configuration parameters for an SPS.
10. A wireless device comprising: one or more processors, memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
receive one or more messages comprising: configuration parameters for a plurality of cells comprising one or more licensed cells and one or more unlicensed cells; and
one or more skipping parameters indicating uplink transmission skipping is configured for the wireless device,
receive a downlink control information indicating an uplink grant for an uplink transmission via a first subframe of a first cell in the plurality of cells; and
based on the first cell being an unlicensed cell, transmit the uplink transmission via the first subframe of the first cell when:
the one or more skipping parameters indicate uplink transmission skipping is configured for the wireless device in the first subframe;
the uplink transmission comprises a medium access control (MAC) packet data unit comprising:
zero MAC service data units; and
a MAC control element (CE) only for a padding buffer status report (BSR) or a periodic BSR; and
no aperiodic channel state information is requested for the first subframe.
11. The wireless device of claim 10 , wherein the uplink transmission comprises one or more medium access control (MAC) packets.
12. The wireless device of claim 10 , wherein the one or more skipping parameters indicate that the uplink transmission skipping is configured for dynamic grants.
13. The wireless device of claim 10 , wherein the instructions that cause the wireless device to transmit the uplink transmission further cause the wireless device to transmit the uplink transmission based on a listen before talk (LBT) procedure indicating a clear channel.
14. The wireless device of claim 10 , wherein the uplink grant is a single-subframe grant.
15. The wireless device of claim 10 , wherein the uplink grant is a multi-subframe grant.
16. The wireless device of claim 10 , wherein the one or more skipping parameters indicate that the uplink transmission skipping is configured for semi-persistent scheduling (SPS) grants.
17. The wireless device of claim 16 , wherein the uplink transmission comprises a zero byte medium access control service data unit.
18. The wireless device of claim 16 , wherein the one or more messages comprise configuration parameters for an SPS.
19. The wireless device of claim 10 , wherein the one or more messages are radio resource control messages.
20. The method of claim 1 , wherein the one or more messages are radio resource control messages.