Replicated grant-free transmissions utilizing multiple configurations
Various arrangements for using multiple grant-free transmission configurations are presented. A cellular network may assign multiple grant-free transmission configurations to a user equipment (UE). The UE may schedule and transmit the same data using at least two separate grant-free transmission configurations.
1. A system for using multiple grant-free transmission configurations, the system comprising:
a first user equipment (UE), configured to:
schedule a first set of data for transmission using a first plurality of resource units of a first grant-free transmission configuration of a plurality of grant-free transmission configurations;
schedule a replication of the first set of data for transmission using a second plurality of resource units of a second grant-free transmission configuration of the plurality of grant-free transmission configurations, wherein:
each resource unit of the first plurality of resource units and the second plurality of resource units corresponds to a timeslot and a frequency; and
each resource unit of the first grant-free transmission configuration directly corresponds to a corresponding resource unit of the second grant-free transmission configuration; and
transmit the first set of data using the first grant-free transmission configuration and the replication of the first set of data using the second grant-free transmission configuration to a base station of a cellular network, wherein:
the base station is configured to reconstruct a second set of data, transmitted by a second UE and involved in a collision with the first set of data, by performing a lookup to determine the first grant-free transmission configuration used by the first UE and the second grant-free transmission configuration used by the first UE to determine correspondence between the first plurality of resource units and the second plurality of resource units.
2. The system of claim 1 , wherein each grant-free transmission configuration of the plurality of grant-free transmission configurations defines a plurality of time-windows and a plurality of frequencies corresponding to the plurality of time-windows.
3. The system of claim 2 , wherein the first UE is further configured to:
receive a first definition of the first grant-free transmission configuration from the base station of the cellular network; and
receive a second definition of the second grant-free transmission configuration from the base station of the cellular network.
4. The system of claim 3 , wherein the first UE is configured to schedule the replication of the first set of data for transmission using the second grant-free transmission configuration prior to transmission of the first set of data.
5. The system of claim 4 , wherein the first plurality of resource units of the first grant-free transmission configuration do not overlap any resource units of the second plurality of resource units of the second grant-free transmission configuration.
6. The system of claim 5 , wherein the first UE is further configured to schedule the replication of the first set of data for transmission using the second grant-free transmission configuration in response to receiving authorization from the base station to transmit grant-free transmissions using more than one grant-free transmission configuration.
7. The system of claim 6 , wherein the first UE communicates using 5G New Radio (NR) radio access technology (RAT).
8. The system of claim 4 , further comprising the base station of the cellular network, the base station configured to:
receive the first set of data according to the first grant-free transmission configuration and the replication of the first set of data according to the second grant-free transmission configuration.
9. The system of claim 8 , wherein the base station is further configured to:
detect that the collision has occurred between the first set of data received via the first grant-free transmission configuration and the transmission of the second UE.
10. A non-transitory processor-readable medium comprising processor-readable instructions configured to cause a user equipment (UE) to:
schedule a first set of data for transmission using a first plurality of resource units of a first grant-free transmission configuration of a plurality of grant-free transmission configurations;
schedule a replication of the first set of data for transmission using a second plurality of resource units of a second grant-free transmission configuration of the plurality of grant-free transmission configurations, wherein:
each resource unit of the first plurality of resource units and the second plurality of resource units corresponds to a timeslot and a frequency; and
each resource unit of the first grant-free transmission configuration directly corresponds to a corresponding resource unit of the second grant-free transmission configuration; and
cause the first set of data to be transmitted to a base station of a cellular network using the first grant-free transmission configuration and cause the replication of the first set of data to be transmitted using the second grant-free transmission configuration to the base station of the cellular network, wherein:
the base station is configured to reconstruct a second set of data, transmitted by a second UE and involved in a collision with the first set of data, by performing a lookup to determine the first grant-free transmission configuration used by the first UE and the second grant-free transmission configuration used by the first UE to determine correspondence between the first plurality of resource units and the second plurality of resource units.
11. The non-transitory processor-readable medium of claim 10 ,
wherein each grant-free transmission configuration of the plurality of grant-free transmission configurations defines a plurality of time-windows and a plurality of frequencies corresponding to the plurality of time-windows.
12. The non-transitory processor-readable medium of claim 11 , wherein the processor-readable instructions are further configured to cause the UE to:
receive a first definition of the first grant-free transmission configuration from the base station of the cellular network; and
receive a second definition of the second grant-free transmission configuration from the base station of the cellular network.
13. The non-transitory processor-readable medium of claim 12 , wherein the processor-readable instructions cause the UE to schedule the replication of the first set of data for transmission using the second grant-free transmission configuration prior to transmission of the first set of data.
14. The non-transitory processor-readable medium of claim 13 , wherein the first plurality of resource units of the first grant-free transmission configuration do not overlap any resource units of the second plurality of resource units of the second grant-free transmission configuration.
15. The non-transitory processor-readable medium of claim 14 , wherein the processor-readable instructions are further configured to cause the UE to:
schedule the replication of the first set of data for transmission using the second grant-free transmission configuration in response to receiving authorization from the base station to transmit grant-free transmissions using more than one grant-free transmission configuration.
16. A method for using multiple grant-free transmission configurations, the method comprising:
scheduling, by user equipment (UE), a first set of data for transmission using a first plurality of resource units of a first grant-free transmission configuration of a plurality of grant-free transmission configurations;
scheduling, by the UE, a replication of the first set of data for transmission using a second plurality of resource units of a second grant-free transmission configuration of the plurality of grant-free transmission configurations, wherein:
each resource unit of the first plurality of resource units and the second plurality of resource units corresponds to a timeslot and a frequency; and
each resource unit of the first grant-free transmission configuration directly corresponds to a corresponding resource unit of the second grant-free transmission configuration; and
transmitting, by the UE, the first set of data using the first grant-free transmission configuration and the replication of the first set of data using the second grant-free transmission configuration to a base station of a cellular network, wherein:
the base station is configured to reconstruct a second set of data, transmitted by a second UE and involved in a collision with the first set of data, by performing a lookup to determine the first grant-free transmission configuration used by the first UE and the second grant-free transmission configuration used by the first UE to determine correspondence between the first plurality of resource units and the second plurality of resource units.
17. The method of claim 16 , further comprising:
receiving, by the UE, a first definition of the first grant-free transmission configuration from the base station of the cellular network; and
receiving, by the UE, a second definition of the second grant-free transmission configuration from the base station of the cellular network, wherein
each grant-free transmission configuration of the plurality of grant-free transmission configurations defines a plurality of time-windows and a plurality of frequencies corresponding to the plurality of time-windows.
18. The method of claim 17 , wherein the UE schedules the replication of the first set of data for transmission using the second grant-free transmission configuration prior to transmission of the first set of data.
19. The method of claim 18 , wherein the first plurality of resource units of the first grant-free transmission configuration do not overlap any resource units of the second plurality of resource units of the second grant-free transmission configuration.
20. The method of claim 19 , further comprising:
receiving, by the UE, authorization from the base station to transmit grant-free transmissions using more than one grant-free transmission configuration, wherein
the UE schedules the replication of the first set of data for transmission using the second grant-free transmission configuration based on the authorization.