Abstract: A method for performing optimized radio resource management (RRM) in an O-RAN network, includes: performing, at the RRM analytics module, a machine learning-based analysis to determine an optimal resource allocation policy based on at least one performance measurement performed at a distributed unit (DU); receiving, by the DU, the optimal resource allocation policy determined by the RRM; and utilizing, by the DU, the optimal resource allocation policy to one of schedule or not schedule user equipments (UEs). In a given slot and for a given state of the base station, candidate UEs to serve in the slot are selected based on a chosen policy. If the number of selected candidate UEs is higher than the maximum number the base station can serve in that slot, the radio resource management (RRM) module selects, using the chosen policy, the maximum number of UEs, and the selected UEs are allocated resources.

Abstract: A system for optimizing shut-down and restart of an Open Radio Access Network (O-RAN) radio unit (O-RU) deployed in an O-RAN Citizens Broadband Radio Service (CBRS) network includes: spectrum access system (SAS); CBRS Domain Proxy (DP) located in a Centralized Data Center (CDC); Cloud Management Service (CMS) located in the CDC; a first CBRS Interface Monitoring and Alert (CIMA) located in the CDC; a second CIMA located in a Distributed Data Center (DDC); at least one O-RAN Distributed Unit (O-DU) located in the DDC; a plurality of O-RAN Radio Units (O-RUs) located in the DDC; and an O1 interface connecting the CDC and DDC. The second CIMA located in the DDC monitors the O1 interface connection to the DDC, and if a failure of the O1 interface lasts longer than a specified time duration Sd, alerts the at least one O-DU regarding the failure of the O1 interface.

Abstract: There is provided a method of operating an Open Radio Access Network (O-RAN) having an O-RAN radio unit (O-RU) and an O-RU controller. The method includes sending, from the O-RU to the O-RU controller, (i) a message informing that the O-RU supports a feature such as (a) a plurality of delay management profiles, and/or (b) a plurality of transmission window sizes, and (ii) a report of capabilities of the O-RU, where the report includes a parameter such as (a) a quantity of supported delay management profiles, (b) supported window sizes for each of the plurality of delay management profiles, and/or (c) a supported window offset for each of the plurality of delay management profiles. The O-RU controller configures the O-RU based on the feature and the parameter.

Abstract: A method of Narrow-band Internet of Things physical random-access channel (NPRACH) communication includes: transmitting, from a user equipment (UE), a Narrow-band Internet of Things (NB-IoT) Orthogonal Frequency-Division Multiple Access (OFDMA) symbol using a transmit inverse fast Fourier transform (Tx-IFFT) having a first length; processing, at lower physical layer (LPHY) of a baseband unit (BBU), the NB-IoT OFDMA symbol using a receive fast Fourier transform (Rx-FFT) having a second length different from the first length to generate an Rx-FFT output; sending, from the LPHY of the BBU to upper physical layer (UPHY) of the BBU, a selected number of values of the Rx-FFT output corresponding to desired resources block in the NB-IoT OFDMA symbol; filtering, at the UPHY, intercarrier interference (ICI) from the selected number of values of the Rx-FFT output; and reconstructing, at the UPHY, the NB-IoT OFDMA symbol.

Abstract: A method of implementing an optimal handover of a user equipment (UE) in an Open Radio Access Network (O-RAN) system from a first serving cell subject to a shutdown to an optimal target cell for the UE before executing the shutdown includes: providing an event trigger style for an event trigger used to trigger an event in an E2 node of the O-RAN system when a configuration change is ongoing within the E2 node, wherein the event trigger style is provided as radio intelligent controller (RIC) Event Trigger Definition information element (IE) Style Type 5; sending the event trigger from the E2 node to a near-real time (near-RT) RIC; and sending, by the near-RT RIC, a control message to the E2 node to implement the optimal handover of the UE to the optimal target cell for the UE.

Abstract: A method for optimizing bandwidth part (BWP) management for 5G wireless network includes: periodically analyzing, by a BWP analytics module located at one of near-real-time radio access network intelligent controller (near-RT RIC) or a distributed unit (DU) of a gNodeB, at least one of physical resource block (PRB) utilization difference, delay violation percentage corresponding to a percentage of logical channels not able to meet delay requirements for quality of service (QOS) profile assigned to the logical channels, throughput, and interference levels of a BWP to classify the BWP; periodically analyzing, by the BWP analytics module, at least one of PRB utilization, throughput, and delay requirements of at least one user equipment (UE); and categorizing, by the BWP analytics module, the at least one UE into one of a plurality of BWP classifications based on the analyzing of the at least one of PRB utilization, throughput, and delay requirements.

Abstract: A system for providing granular location information for User Equipment (UE) in an Open Radio Access Network (O-RAN) that generates and transmits a Location Report without receiving a Location Reporting Control message. When UE moves either, between sectors or bands of a cell site or the UE is handed over to another cell site, a Location Update message is generated by the cell site responsible for the UE and is transmitted to a controlling Distributed Unit (DU) and onward to a controlling Central Unit (CU). The information is further transmitted to Core equipment that may include Mobility Management Entity/Access and Mobility Management Function (MME/AMF) and Lawful Interception Management System (LIMS) allowing for high granularity for location identification of UE in an O-RAN system.

Abstract: A method for providing generic information encoding for RAN OAM-related data by providing semantics of RAN OAM data including CM/PM/Trace data and a generic information encoding model using Information Elements (IE) and/or IE structures that leverage the RAN semantics for encoding RAN OAM-related data using common message structures to encode any number of OAM-related RAN parameters, nested in hierarchical RAN structures to any depths enabling an R1 data consumer via a data customer computer to discover data capabilities of an R1 data producer that produces the RAN OAM-related data over an O-RAN-standardized R1 interface between rApps and Non-RT RIC/SMO platform functions.

Abstract: A method of implementing Orthogonal Channel Noise (OCN) testing in a wireless network for fully loaded conditions in the absence of actual user equipment (UE) loads, said wireless network including a radio unit (RU), a Layer 1 module, and a Layer 2 module connected to the Layer 1 module over a message-based interface, the method comprising: sending, by the Layer 2 module, OCN parameters to the Layer 1 module via a Downlink Transmission Time Interval request (DL_TTI.request) message; and configuring, by the Layer 1 module, the RU using the OCN parameters. In the method, i) the DL_TTI.request message contains isOCNsConfigured parameter; and ii) in the case the isOCNsConfigured parameter is set to TRUE, then the DL_TTI.Request message additionally contains OCNs configuration (OCNsConfig) information.

Abstract: A system method of resource allocation for coexistence of low latency, low loss and scalable throughput (L4S) traffic and non-L4S traffic in a 5G wireless system includes: classifying, by a centralized unit-user plane (CU-UP), each downlink (DL) data radio bearer (DRB) as one of L4S DRB or non-L4S DRB and sorting the computed scheduling metric values for each L4S and non-L4S DRB to select a specified L number of logical channels with the highest values of the scheduling metric.

Abstract: There is provided an Open Radio Access Network (O-RAN) that includes a fronthaul interface over which an O-RAN Distributed Unit (O-DU) and an O-RAN Radio Unit (O-RU) communicate with one another and exchange O-RAN standard defined user-plane (U-plane) packets and control-place (C-Plane) packets. The fronthaul interface carries control and management information via management-plane (M-Plane) message exchange, and timing synchronization is achieved in accordance with synchronization-plane (S-Plane) procedures, and the O-RAN accommodates communications via 2G and 3G based mobile networks.

Abstract: In a method for optimizing radio resource allocation for 5G-slicing environment, each of the downlink (DL) and uplink (UL) schedulers allocate resources to each protocol data unit (PDU) session according to the following rules for each radio resource management (RRM) policy ratio instance n, n=1,2, . . . , N: i) dedicated resource allocation: an aggregate of X_n % of total available resources Avail_RBTOT is allocated to all PDU sessions belonging to slices in a member List L_n; ii) prioritized resource allocation: an aggregate of (Y_n?X_n) % of Avail_RBTOT is allocated to PDU sessions belonging to slices in L_n; and iii) shared resource allocation: remaining resources are shared by all signaling radio bearers (SRBs), Medium Access Control elements (MAC-CEs) and PDU sessions, such that the aggregate resources allocated to PDU sessions in L_n do not exceed Z_n % of Avail_RBTOT for each n=0, 1, 2, . . . , N.

Abstract: A method for optimizing service-level-policy-based network performance management in a 5G wireless network slice includes: analyzing, by a slice analytics module, a target slice throughput of the slice in comparison to an observed slice throughput of the slice to compute a slice-throughput error function; and updating, by the slice analytics module, based on at least the slice-throughput error function, at least one of the following: i) radio resource management policy maximum ratio for the slice and a corresponding shared pool of resource blocks (RBs) for the slice; ii) radio resource management policy minimum ratio for the slice and a corresponding prioritized pool of RBs for the slice; and iii) radio resource management policy dedicated ratio for the slice and a corresponding dedicated pool of RBs for the slice.

Abstract: A method for load balancing in an Open Radio Access Network (O-RAN) system having an overloaded serving cell of a first base station includes: determining, by at least the first base station, radio-resource-usage efficiency of each one of a subset of user equipments (UEs) in the overloaded serving cell; determining, by at least the first base station, from the subset of UEs a list of candidate UEs for handover from the overloaded serving cell to a non-overloaded neighboring cell, based on one of i) per-UE average physical resource block (PRB) usage over a specified time period, or ii) per-UE average of measurements involving modulation-and-coding-scheme over a specified time period; and handing over, by the first base station, at least a selected number of UEs from the list of candidate UEs to the non-overloaded neighboring cell to implement load balancing.

Abstract: A method for optimizing Control Unit (CU)-Distributed Unit (DU) flow control to detect congestion over midhaul and take corrective action to reduce packet dropping in the midhaul includes: computing, by DU, desired data rate (DDR) for each data radio bearer (DRB); and sending, by the DU, the DDR every time when desired buffer size (DBS) is sent from DU to CU user plane (CU-UP), along with Downlink Data Delivery Status (DDDS). DU computes DDR for a DRB as follows: DDR=TBS(MCS?, prb?, rank)*(number of slots/subframe in 1 sec)*(beta)*(beta_drb), with TBS being the Transport block size computation, and MCS?=min {(current MCS+MCS_step), MCSmax}.

Abstract: With MR-DC, UE is connected to both MCG and SCG. When an MCG handover failure occurs, there is a defined method to categorize the handover failures and take corrective actions, however, for SCG handover failures, there are no defined categorizations and corresponding corrective actions currently available. The current method facilitates identification and categorization of SCG handover failures to be categorized as too early, too late and wrong cell handovers. By fine-tuning the handover parameters (based on the SCG handover failure type) SCG handover failure rates would be reduced significantly.

Abstract: Canary upgrades are currently supported only for one set of microservices that are stateless. This does not allow for canary evaluation of all microservices that are part of a Containerized Network Function (CNF). This CNF level Canary deployment extends the capability to all microservices in a CNF deployed in different modes like stateless, stateful, singleton, active/standby. CNF level Canary deployment facilitates evaluation of complete CNF in a controlled fashion before extending the same to all production deployments. In addition, Canary deployment is also extended across CNFs to facilitate evaluation of a feature/performance across multiple CNFs of a new release in a controlled fashion.

Abstract: A method for providing enhanced resiliency of a radio access network (RAN) cell site having multiple sectors includes: providing a first radio unit (RU) simultaneously serving a first set of sectors with a first set of antenna streams; providing a second RU simultaneously serving at least a second set of sectors with a second set of antenna streams; providing a third RU simultaneously serving at least a third set of sectors with a third set of antenna streams; and reconfiguring, by a network management unit, at least the first set of sectors with a reduced antenna configuration in the case of one of a failure or shutdown of the first RU, and all sectors of the cell site are served by the second RU and the third RU to remain in service.

Abstract: A method for optimizing uplink performance of Open Radio Access Network (O-RAN) system implementing O-RAN split option 7-2x-based uplink (UL) multiple-input multiple-output (MIMO) operation includes: selectively utilizing non-port reduced DMRS symbols and non-port reduced DMRS measurements to mitigate performance degradation of the UL MIMO in conditions involving high mobility for a user equipment (UE) and/or high interference. The non-port reduced DMRS symbols are DMRS symbols from multiple antenna streams before digital beamforming operation, and non-port reduced DMRS measurements are measurements derived from the non-port reduced DMRS symbols. A radio unit (RU) of the O-RAN system i) extracts the non-port reduced DMRS symbols, and ii) transmits the non-port reduced DMRS measurements to a distributed unit (DU) of the O-RAN system. The DU transmits combining and/or digital beamforming matrix elements to the RU for combining and/or digital beamforming matrix application.

Abstract: A method that uses CCE randomization to improve the detectability of PDCCH transmission in 5G NR applications to increase the RACH success rate and throughput at the system level. The method includes allocating PDCCH CCE for CORESETs for nearby sectors to be separated by frequency and/or by time providing differing Start CCE indexes for CORESETs according to the aggregation levels in PDCCH transmission.