MACHINE LEARNING ASSISTED RADIO RESOURCE MANAGEMENT (RRM) POLICIES FOR HIGH DATA RATE LOW LATENCY AND OTHER APPLICATIONS IN O-RAN NETWORKS
A method for implementing enhanced radio resource management of open radio access network (O-RAN) based on machine-learning-based technique, includes: sending, from a distributed unit (DU) of the O-RAN to a traffic prediction analytics module, values of at least one network performance parameter comprising buffer occupancy (BO) for a plurality of data radio bearers (DRBs) at 5G Quality of Service Identifier (5QI) level; deploying, at the traffic prediction analytics module, a Long Short-Term Memory (LSTM) neural network comprising at least one LSTM unit for data traffic prediction of one of per-DRB data traffic or per-logical channel (LC) traffic for each one of a plurality of logical channels (LCs) based on the at least one network performance parameter; and deriving, by the traffic prediction analytics module based on at least the data traffic prediction, a set of parameters defining a policy for determining a scheduling priority of each one the LCs.
1 . A method for implementing enhanced radio resource management of open radio access network (O-RAN) based on machine-learning-based technique, comprising:
sending, from a distributed unit (DU) of the O-RAN to a traffic prediction analytics module, values of at least one network performance parameter comprising buffer occupancy (BO) for a plurality of data radio bearers (DRBs) at 5G Quality of Service Identifier (5QI) level;
deploying, at the traffic prediction analytics module, a Long Short-Term Memory (LSTM) neural network comprising at least one LSTM unit for data traffic prediction of one of per-DRB data traffic or per-logical channel (LC) traffic for each one of a plurality of logical channels (LCs) based on the at least one network performance parameter; and
deriving, by the traffic prediction analytics module based on at least the data traffic prediction, a set of parameters defining a policy for determining a scheduling priority of each one the LCs.
2 . The method according to claim 1 , wherein:
the traffic prediction analytics module is in one of a near-real time radio intelligent controller (near-RT RIC), a centralized unit (CU) of the O-RAN, or an analytics server.
3 . The method according to claim 2 , wherein:
the at least one network performance parameter further comprises at least one of cell load and characteristics of DU-to-CU mid-haul connection.
4 . The method according to claim 3 , wherein the traffic prediction analytics module is in a CU user plane (CU-UP).
5 . The method according to claim 4 , wherein the LSTM neural network is deployed for all of the plurality of DRBs.
6 . The method according to claim 4 , wherein the LSTM neural network is deployed for only DRBs carrying traffic for high-data-rate, low-latency applications.
7 . The method according to claim 4 , wherein the LSTM neural network is deployed for only some of the DRBs within the same 5QI.
8 . The method according to claim 3 , wherein:
the traffic prediction analytics module is in the near-RT RIC; and
the DU sends to the near-RT RIC the BO for each DRB in a radio link control (RLC) queue at the DU.
9 . The method according to claim 8 , wherein the LSTM neural network is deployed for all of the plurality of DRBs.
10 . The method according to claim 8 , wherein the LSTM neural network is deployed for only DRBs carrying traffic for high-data-rate, low-latency applications.
11 . The method according to claim 8 , wherein the LSTM neural network is deployed for only some of the DRBs within the same 5QI.
12 . The method according to claim 5 , further comprising:’
providing, by each of the plurality of DRBs, a prediction of channel state information (CSI);
wherein the set of parameters defining the policy for determining the scheduling priority is derived based on the prediction of CSI and the data traffic prediction.
13 . The method according to claim 6 , further comprising:’
providing, by each of the plurality of DRBs, a prediction of channel state information (CSI);
wherein the set of parameters defining the policy for determining the scheduling priority is derived based on the prediction of CSI and the data traffic prediction.
14 . The method according to claim 7 , further comprising:’
providing, by each of the plurality of DRBs, a prediction of channel state information (CSI);
wherein the set of parameters defining the policy for determining the scheduling priority is derived based on the prediction of CSI and the data traffic prediction.
15 . The method according to claim 9 , further comprising:’
providing, by each of the plurality of DRBs, a prediction of channel state information (CSI);
wherein the set of parameters defining the policy for determining the scheduling priority is derived based on the prediction of CSI and the data traffic prediction.
16 . The method according to claim 10 , further comprising:’
providing, by each of the plurality of DRBs, a prediction of channel state information (CSI);
wherein the set of parameters defining the policy for determining the scheduling priority is derived based on the prediction of CSI and the data traffic prediction.
17 . The method according to claim 11 , further comprising:’
providing, by each of the plurality of DRBs, a prediction of channel state information (CSI);
wherein the set of parameters defining the policy for determining the scheduling priority is derived based on the prediction of CSI and the data traffic prediction.