Uplink transmission via consecutive subframes in a wireless device
A wireless device receives an uplink grant indicating radio resources in consecutive time intervals. A respective packet is stored for each time interval of the consecutive time intervals. in response to determining that the wireless device cannot access a channel for a transmission in a first time interval of the consecutive time intervals: the respective packet stored for the first time interval is not transmitted; and a listen-before-talk procedure indicating that the channel is clear in a second time interval subsequent to the first time interval is performed. The respective packet stored for each time interval of the time intervals is transmitted via time intervals starting from the second time interval to a last time interval of the consecutive time intervals.
1. A method comprising:
receiving, by a wireless device, an uplink grant indicating radio resources in m consecutive subframes 0 to m−1, where m is two or more;
storing, for each subframe of the m consecutive subframes, a respective packet;
in response to determining that the wireless device cannot access a channel for a transmission in subframe k, kϵ{0, . . . , m−2}:
not transmitting the respective packet stored for subframe k; and
performing a listen-before-talk procedure indicating that the channel is clear in subframe k+1; and
transmitting, via subframes k+1 to m−1, the respective packet stored for each subframe of subframes k+1 to m−1.
2. The method of claim 1 , wherein the uplink grant is a downlink control information (DCI).
3. The method of claim 1 , wherein the uplink grant comprises a field indicating m.
4. The method of claim 1 , wherein:
the uplink grant comprises one or more fields indicating one or more listen-before-talk configurations;
the one or more listen-before-talk configurations indicate at least one of a listen-before-talk type or a listen-before-talk priority class; and
the listen-before-talk procedure is performed on the channel according to the one or more listen-before-talk configurations.
5. The method of claim 4 , wherein the respective packet stored for each subframe of the m consecutive subframes is associated with a hybrid automatic repeat request process ID corresponding to the subframe for which the respective packet is stored.
6. The method of claim 5 , wherein the uplink grant indicates a modulation and coding scheme (MCS), a power control command, and a resource block assignment applicable to each subframe in the m consecutive subframes.
7. The method of claim 1 , wherein each subframe in the m consecutive subframes is associated with a hybrid automatic repeat request process identifier, a redundancy version (RV), and a new data indicator (NDI).
8. The method of claim 1 , wherein the respective packet stored for each subframe of the m consecutive subframes is associated with a hybrid automatic repeat request process ID corresponding to the subframe for which the respective packet is stored.
9. The method of claim 1 , wherein the uplink grant comprises a field indicating that the listen-before-talk procedure is performed on the channel in a first symbol of subframe k or a last symbol of subframe k−1 to make a transmission in subframe k.
10. The method of claim 1 , wherein the uplink grant indicates a modulation and coding scheme (MCS), a power control command, and a resource block assignment applicable to each subframe in the m consecutive subframes.
11. A method comprising:
receiving, by a wireless device, an uplink grant indicating radio resources in consecutive time intervals;
storing, for each time interval of the consecutive time intervals, a respective packet;
in response to determining that the wireless device cannot access a channel for a transmission in a first time interval of the consecutive time intervals:
not transmitting the respective packet stored for the first time interval; and
performing a listen-before-talk procedure indicating that the channel is clear in a second time interval subsequent to the first time interval; and
transmitting, via time intervals starting from the second time interval to a last time interval of the consecutive time intervals, the respective packet stored for each time interval of the time intervals.
12. The method of claim 11 , wherein the uplink grant is a downlink control information (DCI).
13. The method of claim 11 , wherein the time interval is a subframe.
14. The method of claim 11 , wherein the second time interval is adjacent to the first time interval.
15. The method of claim 11 , wherein:
the uplink grant comprises one or more fields indicating one or more listen-before-talk configurations;
the one or more listen-before-talk configurations indicate at least one of a listen-before-talk type or a listen-before-talk priority class; and
the listen-before-talk procedure is performed on the channel according to the one or more listen-before-talk configurations.
16. The method of claim 15 , wherein the respective packet stored for each time interval of the consecutive time intervals is associated with a hybrid automatic repeat request process ID corresponding to the time interval for which the respective packet is stored.
17. The method of claim 16 , wherein the uplink grant indicates a modulation and coding scheme (MCS), a power control command, and a resource block assignment applicable to each time interval in the consecutive time intervals.
18. The method of claim 11 , wherein each time interval of the consecutive time intervals is associated with a hybrid automatic repeat request process identifier, a redundancy version (RV), and a new data indicator (NDI).
19. The method of claim 11 , wherein the respective packet stored for each time interval of the consecutive time intervals is associated with a hybrid automatic repeat request process ID corresponding to the time interval for which the respective packet is stored.
20. The method of claim 11 , wherein the uplink grant indicates a modulation and coding scheme (MCS), a power control command, and a resource block assignment applicable to each time interval in the consecutive time intervals.