Flow-based processing in wireless systems

Abstract

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 wireless transmit/receive unit (WTRU) in communication with a communication network, the WTRU comprising:
 a memory;   a processor, the processor configured at least to:
 determine to send one or more uplink (UL) transmissions; 
 determine a first Transmission Time Interval (TTI) duration for the one or more UL transmissions; 
 determine one or more transport blocks (TBs) associated with the first TTI duration; 
 determine one or more logical channels associated with the first TTI duration, the one or more logical channels associated with the first TTI duration having a respective priority; and 
 determine one or more first data units for the one or more UL transmissions for association with the one or more TBs associated with the first TTI duration based at least in part on the respective priority of the one or more logical channels associated with the first TTI duration; and 
   a transceiver, the transceiver configured at least to; send the one or more UL transmissions using at least the one or more TBs associated with the first TTI duration to a node of the communication network.   
     
     
         2 . The WTRU of  claim 1 , wherein the processor is further configured such that a Medium Access Control (MAC) entity determines the one or more first data units for the one or more UL transmissions for association with the one or more TBs associated with the first TTI duration based at least in part on the respective priority of the one or more logical channels associated with the first TTI duration. 
     
     
         3 . The WTRU of  claim 1 , wherein the one or more logical channels associated with the first TTI duration have a respective prioritized bit rate (PBR). 
     
     
         4 . The WTRU of  claim 3 , wherein the processor is further configured to determine the one or more first data units for the one or more UL transmissions for association with the one or more TBs associated with the first TTI duration up to the PBR of the one or more logical channels associated with the first TTI duration in a decreasing order of the respective priority of the one or more logical channels associated with the first TTI duration. 
     
     
         5 . The WTRU of  claim 1 , wherein the processor is further configured to:
 determine a second Transmission Time Interval (TTI) duration for the one or more UL transmissions;   determine one or more transport blocks (TBs) associated with the second TTI duration;   determine one or more logical channels associated with the second TTI duration, the one or more logical channels associated with the second TTI duration having a respective priority; and   determine one or more second data units for the one or more UL transmissions for association with the one or more TBs associated with the second TTI duration based at least in part on the respective priority of the one or more logical channels associated with the second TTI duration.   
     
     
         6 . The WTRU of  claim 5 , wherein the one or more logical channels associated with the second TTI duration have a respective prioritized bit rate (PBR). 
     
     
         7 . The WTRU of  claim 6 , wherein the processor is further configured to determine the one or more second data units for association with the one or more TBs associated with the second TTI duration up to the PBR of the one or more logical channels associated with the second TTI duration in a decreasing order of the corresponding priority of the one or more logical channels associated with the second TTI duration. 
     
     
         8 . The WTRU of  claim 7 , wherein the transceiver is further configured to send the one or more UL transmissions using the one or more TBs associated with the second TTI duration to the node of the communication network. 
     
     
         9 . The WTRU of  claim 1 , wherein the one or more TBs associated with the first TTI duration have a corresponding size. 
     
     
         10 . The WTRU of  claim 9 , wherein the processor is further configured to determine the one or more TBs associated with the first TTI duration up to a maximum size of the one or more TBs associated with the first TTI duration in a decreasing order of the respective priority of the one or more logical channels associated with the first TTI duration. 
     
     
         11 . The WTRU of  claim 5 , wherein the one or more TBs associated with the second TTI duration have a corresponding size. 
     
     
         12 . The WTRU of  claim 11 , wherein the processor is further configured to determine the one or more TBs associated with the second TTI duration up to a maximum size of the one or more TBs associated with the second TTI duration in a decreasing order of the respective priority of the one or more logical channels associated with the second TTI duration. 
     
     
         13 . The WTRU of  claim 1 , wherein the first TTI duration is one of a plurality of TTI durations configured on the WTRU, and the processor is further configured to determine the first TTI duration for the one or more UL transmissions based on a determination that the first TTI is a shortest duration of the plurality of TTI durations. 
     
     
         14 . The WTRU of  claim 5 , wherein the processor is configured such that the respective priority of the one or more logical channels associated with the first TTI duration is the same as the respective priority of the one or more logical channels associated with the second TTI duration. 
     
     
         15 . A wireless transmit/receive unit (WTRU) in communication with a communication network, the WTRU comprising:
 a memory;   a processor, the processor configured at least to:
 determine one or more data units for a transmission; 
 determine at least one of: a radio link monitoring (RLM) rule, or a radio link failure (RLF) rule, based on the one or more data units; 
 monitor a control channel for at least one RLF indication according to the at least one of: the RLM rule, or the RLF rule; 
 detect the at least one RLF indication on the control channel based on at least one of: the RLM rule, or the RLF rule; and 
 initiate a recovery rule based on the one or more data units upon the detection of the at least one RLF indication. 
   
     
     
         16 . The WTRU of  claim 15 , wherein the one or more data units require a highly reliable service, and the processor is further configured such that the at least one of: the RLM rule or the RLF rule includes an action to prioritize the detection of the at least on RLF indication. 
     
     
         17 . The WTRU of  claim 16 , wherein the processor is further configured such that the recovery rule includes an action to initiate duplication of data corresponding to the one or more data units until an occurrence of a radio link re-establishment. 
     
     
         18 . The WTRU of  claim 15 , wherein the one or more data units utilize a connection-less transfer, and the processor is further configured such that the recovery rule includes an action to initiate at least one of: a cell-(re)selection, or a connection (re)establishment. 
     
     
         19 . The WTRU of  claim 18 , wherein the one or more data units are associated with a process regarding one or more beams, and the processor is further configured such that the recovery rule includes an action to initiate at least one of: a reacquisition, or a reconfiguration of the one or more beams. 
     
     
         20 . The WTRU of  claim 15 , wherein the processor is further configured such that the at least one of: the RLM rule, or the RLF rule is received via a Radio Resource Control layer of the WTRU.