Communications device, infrastructure equipment and methods
A method of transmitting data by a communications device in a wireless communications network, the method comprising receiving a first downlink control message comprising an indication of a first dynamic grant allocating first uplink communications resources for transmission of data by the communications device, receiving a second downlink control message, the second downlink control message comprising an indication of a second dynamic grant allocating second uplink communications resources for transmission of data by the communications device, determining that the second uplink communications resources comprise at least a portion of the first uplink communications resources, determining that the first uplink communications resources are associated with a higher priority than the second uplink communications resources, and in response to the determining that the first uplink communications resources are associated with a higher priority than the second uplink communications resources, transmitting a transport block using the first uplink communications resources.
1. A method of transmitting data by a communications device in a wireless communications network, the method comprising:
receiving a first downlink control message comprising an indication of a first dynamic grant allocating first uplink communications resources for transmission of data by the communications device,
receiving a second downlink control message, the second downlink control message comprising an indication of a second dynamic grant allocating second uplink communications resources for transmission of data by the communications device,
determining that the second uplink communications resources comprise at least a portion of the first uplink communications resources,
determining that the first uplink communications resources are associated with a higher priority than the second uplink communications resources based on an indication included in the first downlink control message permitting pre-emption of the second uplink communications resources allocated by the second downlink control message received prior to the first downlink control message, and
in response to the determining that the first uplink communications resources are associated with a higher priority than the second uplink communications resources, transmitting a transport block using the first uplink communications resources.
2. The method according to claim 1 , wherein determining that the first uplink communications resources are associated with a higher priority than the second uplink communications resources further comprises determining that the first control indication was received after the second control indication.
3. The method according to claim 1 , wherein determining that the first uplink communications resources are associated with a higher priority than the second uplink communications resources further comprises determining that the first uplink communications resources start after the second uplink communications resources.
4. The method according to claim 1 , wherein determining that the first uplink communications resources are associated with a higher priority than the second uplink communications resources further comprises determining that a duration of the first uplink communications resources is greater than a duration of the second uplink communications resources.
5. The method according to claim 1 , wherein determining that the first uplink communications resources are associated with a higher priority than the second uplink communications resources further comprises determining that a modulation and coding scheme to be used for the transmission of the data using the first uplink communications resources provides greater reliability than a modulation and coding scheme to be used for a transmission of data using the second uplink communications resources.
6. The method according to claim 1 , wherein the first uplink communications resources are associated with a first sub-carrier spacing, and the second uplink communications resources are associated with a second sub-carrier spacing, and
determining that the first uplink communications resources are associated with a higher priority than the second uplink communications resources further comprises determining that the first sub-carrier spacing is greater than the second sub-carrier spacing.
7. The method according to claim 1 , wherein determining that the first uplink communications resources are associated with a higher priority than the second uplink communications resources comprises determining
that the second downlink control message was received before the first downlink control message was received and comprises an indication that pre-emption is not permitted.
8. The method according to claim 1 , wherein
the first downlink control message comprises an indication of the priority associated with the first uplink communications resources, and
the second downlink control message comprises an indication of the priority associated with the second uplink communications resources.
9. The method according to claim 8 , wherein the indication of the priority associated with the first uplink communications resources comprises an indication of a first logical channel, the first logical channel being associated with a first logical channel priority, and
the indication of the priority associated with the second uplink communications resources comprises an indication of a second logical channel, the second logical channel being associated with a second logical channel priority, and
determining that the first uplink communications resources are associated with a higher priority than the second uplink communications resources further comprises determining that the first logical channel priority is higher than the second logical channel priority.
10. The method according to claim 8 , wherein the indication of the priority associated with the first uplink communications resources comprises an indication of a priority value for the first uplink communication resources,
the indication of the priority associated with the second uplink communications resources comprises an indication of a priority value for the second uplink communication resources, and
determining that the first uplink communications resources are associated with a higher priority than the second uplink communications resources further comprises determining that the priority value of the first uplink communication resources is higher than the priority value of the second uplink communication resources.
11. The method according to claim 8 , wherein the indication of the priority associated with the first uplink communications resources comprises an indication of a first group of one or more logical channels,
the indication of the priority associated with the second uplink communications resources comprises an indication of a second group of one or more logical channels,
each of the one or more logical channels being associated with a logical channel priority, and
determining that the first uplink communications resources are associated with a higher priority than the second uplink communications resources further comprises determining that the highest logical channel priority associated with any of the first group of one or more logical channels is greater than the highest logical channel priority associated with any of the second group of one or more logical channels.
12. The method according to claim 11 , wherein a first scheduling request (SR) identity is associated with first control channel communications resources for transmitting a scheduling request requesting an allocation of communications resources for transmitting data associated with one or more of the first group of logical channels,
a second SR identity is associated with second control channel communications resources for transmitting a scheduling request requesting an allocation of communications resources for transmitting data associated with one or more of the second group of logical channels,
the indication of the first group of one or more logical channels comprises an indication of the first SR identity, and
the indication of the second group of one or more logical channels comprises an indication of the second SR identity.
13. The method according to claim 11 , wherein a first logical channel group (LCG) identity is associated with the first group of logical channels, a buffer status corresponding to each of the first group of logical channels being reported within a single buffer status report,
a second SR identity is associated with a second LCG identity is associated with the second group of logical channels, a buffer status corresponding to each of the second group of logical channels being reported within a single buffer status report,
the indication of the first group of one or more logical channels comprises an indication of the first LCG identity, and
the indication of the second group of one or more logical channels comprises an indication of the second LCG identity.
14. The method according to claim 1 , the method comprising
forming a second transport block comprising second data, and
transmitting the second transport block using a portion of the second uplink communications resources, the portion of the second uplink communications resources not including any of the first uplink communications resources.
15. The method according to claim 1 , wherein the first uplink communications resources are on a physical uplink shared channel.
16. The method according to claim 1 , the method comprising
receiving data associated with each of a plurality of logical channels, and
determining, based on the first downlink control message, a priority for filling an available capacity of the transport block with the data from one or more of the plurality of logical channels.
17. The method according to claim 16 , wherein the first downlink control message comprises an indication of one or more logical channels, and
the priority for filling the available capacity of the transport block is based on the indication of the one or more logical channels.
18. The method according to claim 17 , wherein the indication of the one or more logical channels comprises one of an SR identity, an LCG identity and a logical channel identity.
19. A method of receiving data by an infrastructure equipment in a wireless communications network, the method comprising:
transmitting a first downlink control message comprising an indication of a first dynamic grant allocating first uplink communications resources for transmission of data by a communications device,
transmitting a second downlink control message, the second downlink control message comprising an indication of a second dynamic grant allocating second uplink communications resources for transmission of data by the communications device, and
receiving a transport block using the first uplink communications resources based on determination that the second uplink communications resources comprise at least a portion of the first uplink communications resources, wherein
the first uplink communications resources are associated with a higher priority than the second uplink communications resources as determined based on based on an indication included in the first downlink control message permitting pre-emption of the second uplink communications resources allocated by the second downlink control message received prior to the first downlink control message.