Methods of signaling reserved resources for ultra-reliable low latency communication (URLLC) traffic
A set of resources, e.g. time and frequency resources, used for configured grants for a group of user equipments (UEs) is signalled to a second group of UEs. The second group of UEs consider the signalled set of resources to be reserved, and, therefore, avoid transmitting anything on the set of resources even if they are scheduled to do so.
1. A method performed by a first wireless device, the method comprising:
the first wireless device receiving, from a network node, a Radio Resource Control (RRC) message addressed to the first wireless device, the RRC message addressed to the first wireless device comprising aggregated uplink information comprising information specifying a first set of reserved uplink (UL) resources that are not available for use by the first wireless device; and
configuring an uplink transmission based on the aggregated uplink information.
2. The method of claim 1 , wherein configuring the uplink transmission based on the aggregated uplink information comprises utilizing, for the uplink transmission, a second set of uplink resources wherein the second set of uplink resources does not include any reserved UL resource included in the first set of reserved UL resources.
3. The method of claim 1 , wherein configuring the uplink transmission based on the aggregated uplink information comprises:
identifying a portion of the uplink transmission that is scheduled to utilize a reserved resource included in the first set of reserved UL resources; and
removing the identified portion of the uplink transmission.
4. The method of claim 1 , wherein
the aggregated uplink information further comprises information indicating a second set of reserved uplink (UL) resources, wherein the second set of reserved UL resources are available for use by the first wireless device, and
the method further comprises performing the uplink transmission using at least one of the reserved UL resources included in the second set of reserved UL resources.
5. The method of claim 1 , wherein the aggregated uplink information further comprises information indicating: a periodicity, a number of configured repetitions, a time domain resource allocation, and/or a frequency resource allocation.
6. A method performed by a network node, the method comprising:
obtaining a first uplink (UL) grant free (GF) configuration for a first user equipment (UE), wherein the first UL GF configuration indicates UL resources reserved for the first UE;
obtaining a second uplink (UL) grant free (GF) configuration for a second user equipment (UE), wherein the second UL GF configuration indicates UL resources reserved for the second UE;
aggregating the first and second UL GF configurations to form aggregated UL information, wherein the aggregated UL information indicates an aggregated set of reserved UL resources, and the aggregated set of reserved UL resources includes the UL resources reserved for the first UE and the UL resources reserved for the second UE; and
transmitting a Radio Resource Control (RRC) message comprising the aggregated uplink information.
7. The method of claim 6 , wherein each of the uplink GF configurations comprises one or more parameters that indicate at least one of: the periodicity, a number of configured repetitions, a time domain resource allocation and a frequency domain resource allocation.
8. The method of claim 6 , wherein aggregating the uplink GF configurations comprises:
sorting the uplink GF configurations according to predetermined criteria.
9. The method of claim 6 , wherein transmitting the aggregated uplink configuration comprises transmitting the aggregated uplink information to an individual UE.
10. The method of claim 6 , wherein the uplink GF configurations are allocated for ultra-reliable low latency communication transmission.
11. The method of claim 6 , wherein each of the two or more first UEs are capable of URLLC transmission.
12. A first wireless device, comprising:
a receiver for receiving, from a network node, a Radio Resource Control (RRC) message addressed to the first wireless device, the RRC message comprising aggregated uplink information comprising information indicating a first set of reserved uplink (UL) resources that are not available for use by the first wireless device;
memory; and
processing circuitry coupled to the memory, wherein the first wireless device is configured to configure an uplink transmission based on the aggregated uplink information.
13. A network node, comprising:
memory; and
processing circuitry coupled to the memory, wherein the network node is configured to perform a method comprising:
obtaining a first uplink (UL) grant free (GF) configuration for a first user equipment (UE), wherein the first UL GF configuration indicates UL resources reserved for the first UE;
obtaining a second uplink (UL) grant free (GF) configuration for a second user equipment (UE), wherein the second UL GF configuration indicates UL resources reserved for the second UE;
aggregating the first and second UL GF configurations to form aggregated UL information, wherein the aggregated UL information indicates an aggregated set of reserved UL resources, and the aggregated set of reserved UL resources includes the UL resources reserved for the first UE and the UL resources reserved for the second UE; and
transmitting a Radio Resource Control (RRC) message comprising the aggregated uplink information.
14. The method of claim 1 , wherein the information specifies that the first set of UL resources are not available for use by the first wireless device by indicating that the first set of UL resources are reserved for a wireless device other than the first wireless device.
15. The method of claim 6 , wherein
the UL resources reserved for the first UE are not available for use by the second UE, and
the UL resources reserved for the second UE are not available for use by the first UE.
16. The method of claim 1 , wherein the RRC message is addressed solely to the first wireless device.