Flow-based processing in wireless systems
The WTRU may determine that one or more data units correspond to a flow of such data units. The WTRU may perform such determination as a function of one or more matching rule(s). Flow-based processing may be enabled in the layer 2/layer 1 chain by per-packet determination using one or more rules, for example by routing through the applicable processing functions and/or using the applicable configuration and/or mapping to the applicable uplink physical layer functions and/or resources. One or more functions such as scheduling request, buffer status reporting, HARQ processing, and/or radio link failure and recovery may be controlled based on the policy associated with the flow corresponding to the data being processed.
1. A method implemented by wireless transmit/receive unit (WTRU), the method comprising:
generating (1) a first data unit including first data and a first QoS flow indicator and (2) a second data unit including second data and a second QoS flow indicator, wherein the first data and the first QoS flow indicator are associated with a first data flow, and wherein the second data and the second QoS flow indicator are associated with a second data flow;
determining, based on one or more mapping rules, that the first data unit and the second data unit are associated with a data radio bearer;
generating a transport block that includes: (1) the first data unit including the first QoS flow indicator and (2) the second data unit including the second QoS flow indicator; and
sendinga data transmission including the transport block.
2. The method of claim 1 , wherein the first and second data units are layer 2 data units.
3. The method of claim 1 , wherein the generating of the first and second data units includes generating a first layer 2 header of the first data unit including the first QoS flow indicator and a second layer 2 header of the second data unit including the second QoS flow indicator.
4. The method of claim 1 , wherein a value of the first QoS flow indicator indicates a first guaranteed flow bitrate or a first maximum flow bitrate associated with the first data flow and a value of the second QoS indicator indicates a second, different guaranteed flow bitrate or a second, different maximum flow bitrate associated with the second data flow.
5. The method of claim 1 , wherein the data radio bearer is associated with a plurality of data flows having respectively different values of QoS flow indicators.
6. The method of claim 1 , wherein the data radio bearer is a New Radio (NR) data radio bearer.
7. The method of claim 1 , further comprising determining, based on a plurality of QoS flow indicators including at least the first and second QoS flow indicators of first and second data units of the transport block, any of: (1) one or more physical resources, (2) one or more cells, (3) one or more carriers, (4) one or more transmission points, or (5) one or more Radio Access Technologies (RATs) to be used for sending the transport block.
8. The method of claim 1 , wherein the first data unit is associated with an Ultra Reliable Low Latency (URLLC) service and the second data unit is associated with an enhanced Mobile Broadband (eMBB) service.
9. The method of claim 1 , further comprising receiving configuration information including data radio bearer information associated with the data radio bearer and Quality of Service (QoS) flow information associated with the first data flow and the second data flow.
10. The method of claim 1 , further comprising receiving a third data unit associated with the first data flow and a fourth data unit associated with the second data flow.
11. The method of claim 1 , further comprising:
mapping the first data unit to the data radio bearer based on the first QoS flow indicator; and
mapping the second data unit to the data radio bearer based on the second QoS flow indicator.
12. The method of claim 1 , wherein the generating comprises generating the transport block based on the determining that the first data unit and the second data unit are associated with the data radio bearer.
13. A wireless transmit/receive unit (WTRU), comprising:
a transmitter/receiver unit; and
a processor configured to:
generate (1) a first data unit including first data and a first QoS flow indicator and (2) a second data unit including second data and a second QoS flow indicator, wherein the first data and the first QoS flow indicator are associated with a first data flow, and wherein the second data and the second QoS flow indicator are associated with a second data flow,
determine, based on one or more mapping rules, that the first data unit and the second data unit are associated with a data radio bearer, and
generate a transport block that includes: (1) the first data unit including the first QoS flow indicator and (2) the second data unit including a second QoS flow indicator,
wherein the transmitter/receiver unit is configured to send a data transmission including the transport block.
14. The WTRU of claim 11 , wherein the first and second data units are layer 2 data units.
15. The WTRU of claim 11 , wherein the processor is configured to generate a first layer 2 header of the first data unit including the first QoS flow indicator and a layer 2 header of the second data unit including the second QoS flow indicator.
16. The WTRU of claim 13 , wherein a value of the first QoS flow indicator indicates a first guaranteed flow bitrate or a first maximum flow bitrate associated with the first data flow and a value of the second QoS indicator indicates a second, different guaranteed flow bitrate or a second, different maximum flow bitrate associated with the second data flow.
17. The WTRU of claim 11 , wherein the processor is configured to establish the data radio bear that is associated with a plurality of data flows having respectively different values of QoS flow indicators.
18. The WTRU of claim 11 , wherein the processor is configured to establish a New Radio (NR) data radio bearer, as the data radio bearer.
19. The WTRU of claim 11 , wherein the processor is configured to determine, based on a plurality of QoS flow indicators including at least the first and second QoS flow indicators of first and second data units of the transport block, any of: (1) one or more physical resources, (2) one or more cells, (3) one or more carriers, (4) one or more transmission points, or (5) one or more Radio Access Technologies (RATs) to be used to send the transport block.
20. The WTRU of claim 11 , wherein the first data unit is associated with an Ultra Reliable Low Latency (URLLC) service and the second data unit is associated with an enhanced Mobile Broadband (eMBB) service.
21. The WTRU of claim 13 , wherein the transmitter/receiver unit is configured to receive configuration information including data radio bearer information associated with the data radio bearer and Quality of Service (QoS) flow information associated with the first data flow and the second data flow.
22. The WTRU of claim 13 , wherein the transmitter/receiver unit is configured to receive a third data unit associated with the first data flow and a fourth data unit associated with the second data flow.
23. The WTRU of claim 13 , wherein the processor is configured to:
map the first data unit to the data radio bearer based on the first QoS flow indicator; and
map the second data unit to the data radio bearer based on the second QoS flow indicator.
24. The WTRU of claim 13 , wherein the transport block is generated based on the determination that the first data unit and the second data unit are associated with the data radio bearer.