Data burst volume indication for TSC
Systems and methods are disclosed for data burst volume indication for Time Sensitive Communication (TSC). In one embodiment, a method performed by Radio Access Network (RAN) node comprises receiving, from a core network (CN) node, one or more parameters, in additional to a maximum data burst volume (MDBV) parameter, that describe one or more data volume characteristics of a Quality of Service (QoS) flow. In this manner, compared to always assuming the worst-case scenario with the MDBV, the RAN node has a more accurate understanding of the traffic characteristics, which allows the RAN node to optimally schedule radio resources to cater to the data volume.
1 . A method performed by Radio Access Network (RAN) node, the method comprising:
receiving, from a core network (CN) node, one or more parameters, in addition to a maximum data burst volume (MDBV) parameter, that describe one or more data burst volume characteristics of a Quality of Service (QoS) flow, wherein the one or more parameters comprise one or more parameters that indicate a distribution of the data burst volume of the QoS flow; and
performing one or more operational tasks based on the one or more parameters.
2 . The method of claim 1 , wherein the one or more operational tasks comprises scheduling or allocating resources for a data radio bearer associated to the QoS flow.
3 . The method of claim 1 , wherein the QoS flow is a guaranteed bit rate (GBR) QoS flow.
4 . The method of claim 3 , wherein the GBR QoS flow is of a delay-critical resource type or of a non-delay-critical resource type.
5 . The method of claim 1 , wherein the QoS flow is a non-guaranteed bit rate QoS flow.
6 . The method of claim 1 , wherein receiving the one or more parameters comprise receiving the one or more parameters as Time-Sensitive Communication Assistance Information (TSCAI).
7 . The method of claim 1 , wherein receiving the one or more parameters comprise receiving the one or more parameters as one or more QoS parameters.
8 . The method of claim 1 , wherein receiving the one or more parameters comprise receiving at least one of the one or more parameters as Time-Sensitive Communication Assistance Information (TSCAI) and receiving at least one other of the one or more parameters as at least one QoS parameter.
9 . The method of claim 1 , wherein the one or more parameters comprise a parameter that indicates a minimum data burst volume for the QoS flow.
10 . The method of claim 9 , wherein one or more QoS requirements associated to the QoS flow are applied to the minimum data burst volume rather than the MDBV.
11 . The method of claim 9 , wherein one or more QoS requirements associated to the QoS flow are applied to the MDBV.
12 . The method of claim 1 , wherein the one or more parameters comprise one or more parameters that indicate a data burst volume range of a next message on the QoS flow with respect to an actual size of a previous message on the QoS flow.
13 . The method of claim 12 , wherein the one or more parameters that indicate the data burst volume range of the next message on the QoS flow with respect to the actual size of the previous message on the QoS flow are configured according to a confidence interval.
14 . The method of claim 13 , wherein the confidence interval is tuned according to a packet error rate (PER) of the QoS flow.
15 . The method of claim 1 , wherein the one or more parameters comprise one or more parameters that indicate one or more statistical properties of the data burst volume of the QoS flow.
16 . The method of claim 15 , wherein the one or more statistical properties of the data burst volume of the QoS flow comprise an average data burst volume of the QoS flow, a variance of the data burst volume of the QoS flow, or both the average data burst volume and the variance of the data burst volume of the QoS flow.
17 . The method of claim 15 , wherein the one or more parameters that indicate the one or more statistical properties of the data burst volume of the QoS flow are provided as TSCAI.
18 . The method of claim 1 , wherein the one or more parameters comprise one or more parameters that indicate a generalized conditional distribution of the data burst volume of the QoS flow with respect to a previous data burst volume of the QoS flow.
19 . The method of claim 1 , wherein the one or more parameters comprise one or more parameters that indicate a relative burst size in comparison to another burst data volume indication for the QoS flow.
20 . The method of claim 19 , wherein the other burst data volume indication is by MDBV, or by the minimum data burst volume.
21 . The method of claim 19 , wherein the other burst data volume indication is by observation, by the RAN node, of the actual burst data volume of all previous messages.
22 . The method of claim 1 , wherein the one or more parameters comprise one or more parameters that indicate a relative deviation from a minimum burst size indicated for the QoS flow.
23 . The method of claim 1 , wherein the one or more parameters comprise different parameters for different sub-flows of the QoS flow.
24 . The method of claim 1 , wherein the one or more parameters comprise one or more parameters related to aperiodic deterministic traffic for the QoS flow.
25 . A Radio Access Network (RAN) node comprising processing circuitry configured to cause the RAN node to:
receive, from a core network (CN) node, one or more parameters, in addition to a maximum data burst volume (MDBV) parameter, that describe one or more data burst volume characteristics of a Quality of Service (QoS) flow, wherein the one or more parameters comprise one or more parameters that indicate a distribution of the data burst volume of the QoS flow.
26 . A method performed by core network (CN) node, the method comprising:
sending, to a Radio Access Network (RAN) node, one or more parameters, in addition to a maximum data burst volume (MDBV) parameter, that describe one or more data burst volume characteristics of a Quality of Service (QoS) flow, wherein the one or more parameters comprise one or more parameters that indicate a distribution of the data burst volume of the QoS flow.
27 . A core network (CN) node comprising processing circuitry configured to cause the network node to:
send, to a Radio Access Network (RAN) node, one or more parameters, in addition to a maximum data burst volume (MDBV) parameter, that describe one or more data burst volume characteristics of a Quality of Service (QoS) flow, wherein the one or more parameters comprise one or more parameters that indicate a distribution of the data burst volume of the QoS flow.