METHODS AND APPARATUSES FOR ASSOCIATING SINGLE-MODAL FLOWS FOR SYNCHRONIZATION AND RESOURCE ALLOCATION

1 - 26 . (canceled)

27 . A method, implemented in a network node, the method comprising:

receiving a first message comprising first information including service requirements for a data flow and second information indicating that the data flow is associated with a multi-modal data set;

determining, based on the second information, one or more policy and charging control (PCC) rules for a packet data unit (PDU) session of the data flow, wherein the one or more PCC rules are associated with the data flow; and

transmitting a second message comprising third information indicating the one or more PCC rules associated with the data flow.

28 . The method of claim 27 , comprising:

determining, based on the second information, a data network name and a single network slice selection assistance information (DNN/S-NSSAI) combination that is associated with the multi-modal data set; and

transmitting, to a wireless transmit/receive unit (WTRU), a third message comprising fourth information indicating a user equipment route selection policy (URSP) rule,

wherein the URSP rule includes the DNN/S-NSSAI combination, and wherein the WTRU is associated with at least one flow of the multi-modal data set.

29 . The method of claim 27 , wherein at least one other data flow is part of the multi-modal data set.

30 . The method of claim 29 , wherein the data flow is associated with a first WTRU, wherein the at least one other data flow of the multi-modal data set is associated with a second WTRU, and wherein the first WTRU is different from the second WTRU.

31 . The method of claim 27 , wherein the second information is a multi-modal data set identifier.

32 . The method of claim 27 , wherein the second message is transmitted to a session management function (SMF) network element.

33 . The method of claim 27 , wherein the first message is received from an application function (AF) network element.

34 . The method of claim 33 , wherein the first message is received from the AF via a network exposure function (NEF) network element.

35 . The method of claim 27 , wherein the network node is a policy control function (PCF) network element.

36 . A network node, comprising a processor, a transceiver unit and a storage unit, and configured to:

receive a first message comprising first information including service requirements for a data flow and second information indicating that the data flow is associated with a multi-modal data set;

determine, one or more policy and charging control (PCC) rules for a packet data unit (PDU) session of the data flow, wherein the one or more PCC rules are associated with the data flow; and

transmit a second message comprising third information indicating the one or more PCC rules associated with the data flow.

37 . The network node of claim 36 , configured to:

determine, based on the second information, a data network name and a single network slice selection assistance information (DNN/S-NSSAI) combination that is associated with the multi-modal data set; and

transmit, to a wireless transmit/receive unit (WTRU), a third message comprising fourth information indicating a user equipment route selection policy (URSP) rule,

wherein the URSP rule includes the DNN/S-NSSAI combination and wherein the WTRU is associated with at least one flow of the multi-modal data set.

38 . The network node of claim 36 , wherein at least one other data flow is part of the multi-modal data set.

39 . The network node of claim 38 , wherein the data flow is associated with a first WTRU and the at least one other data flow of the multi-modal data set is associated with a second WTRU; wherein the first WTRU is different from the second WTRU.

40 . The network node of claim 36 , wherein the second information is a multi-modal data set identifier.

41 . The network node of claim 36 , wherein the second message is transmitted to a session management function (SMF) network element.

42 . The network node of claim 36 , wherein the first message is received from an application function (AF) network element.

43 . The network node of claim 42 , wherein the first message is received from the AF via a network exposure function (NEF) network element.

44 . The network node of claim 36 , wherein the network node is a policy control function (PCF) network element.