Nec Corporation

Nec Laboratories Europe Gmbh

Andres Garcia-Saavedra

Xavier Costa Perez

Xi Li

Xavier Costa-Perez

Josep Xavier Salvat Lozano

Fabian Schneider

Luis Diez Fernandez

Ramon Agueero

Victor Valls

Jose Ayala Romero

Xavier Costa-PÉREZ

Xavier PÉREZ Costa

A method for dynamically allocating radio resources across a set of virtualized radio access points (vRAPs) in a virtual radio access network (vRAN) includes collecting contextual information across all vRAPs that share a common carrier bandwidth of a physical radio access point. The method also includes mapping, by a radio resource controller according to an internal mapping policy, the contextual information of the vRAPs into an allocation of vRAN slices to the vRAPs, wherein each vRAN slice comprises allocated computing resources and an allocated bandwidth part (BWP) of the common carrier bandwidth, the BWPs being orthogonal across the vRAN slices. The method also includes notifying the vRAPs of the allocated BWP.

Virtualized RAN slicing with bandwidth parts

A method for managing radio and computing resources of a virtualized radio access network (vRAN) includes a number of virtualized radio access points (vRAPs) that share a common pool of central processing units (CPUs). The method includes dividing, per vRAP, an L1 layer processing pipeline into at least one main processing pipeline and into a number of subordinate processing pipelines, and coordinating the execution of the pipelines across multiple vRAPs. The coordinating includes allocating tasks of the main processing pipelines to dedicated CPUs, and allocating tasks of the subordinate processing pipelines to shared CPUs.

Autonomous virtual radio access network control

A radio access network includes a processing system and one or more radio access points configured to broadcast over a radio band including one or more radio channels. Contextual data is acquired which is representative of at least one of: (i) a quality of the radio band and (ii) a quantity of data demanded by user equipment in communication with the one or more radio access points over the radio band. A compute policy and a radio policy are generated based on the acquired contextual data. Data transmissions for processing are assigned to computing resources of the processing system based on the compute policy. Data are scheduled for transmission over the radio band based on the radio policy. A modulation and coding scheme for the scheduled data transmissions is selected based on the radio policy.

Virtual radio access network control

A method for anomaly detection and troubleshooting in a network includes parsing a network service descriptor (NSD) describing a network service (NS) to be deployed in the network. Monitoring data including time series of service-level metrics and resource-level metrics of network functions (NFs) of the NS are received from different domains of the network. Representations of the time series from the different domains are learned with a common dimensionality. An NS signature of the NS is computed as a cross-correlation matrix comprising cross-correlations between the service-level metrics and the resource-level metrics of the NFs. Embeddings of the NS signature are learned using a model and determining a reconstruction error of the model. It is determined whether the NS is anomalous based on the reconstruction error of the model. The NS is identified as a target for the troubleshooting in a case that the NS was determined to be anomalous.

Anomaly detection and troubleshooting system for a network using machine learning and/or artificial intelligence

A method for anomaly detection of cloud services based on mining time-evolving graphs includes steps of receiving tracing data for a plurality of micro-services of the deployed cloud service, wherein the tracing data defines relationships between the plurality of micro-services of the deployed cloud service at a plurality of different time intervals, computing a functional graph based on the tracing data for each of the plurality of different time intervals, wherein nodes of each functional graph include the plurality of micro-services and wherein links between the nodes represent relationships between the plurality of micro-services, comparing the functional graphs for each of the plurality of time intervals to determine an anomaly score for each of the functional graphs, and detecting a presence of one or more anomalies based on the anomaly scores.

Methods and systems for detecting anomalies in cloud services based on mining time-evolving graphs

A method for managing radio resources in a multiple radio access technology (multi-RAT) wireless communication network, which includes one or more orthogonal frequency-division multiple access (OFDMA)-based base stations that implement different radio access technologies (RATs), includes the step of creating, for each of a plurality of mobile terminals, an incoming queue where data destined to the respective mobile terminal is buffered. Queue information of each mobile terminal is collected and provided to the multi-RAT wireless communication network. System constraints of the multi-RAT wireless communication network are defined and network constraint information is provided. Based on the queue information and the network constraint information, a resource scheduling algorithm is executed that jointly determines: an allocation of physical resource blocks (PRBs) to each link between a RAT and a mobile terminal, an assignment of modulation levels to each of the allocated PRBs, and an activation/deactivation of each of the RATs.

Multi-connectivity scheduler for a multi-rat system

A method provides operating information for a network having a set of computing entities (CPE) for performing functions on data; a set of connecting entities (CNE) for connecting users and performing functions on data; and a set of forwarding entities (SFE) for forwarding data between the CPE and CNE. CNE are assigned to the CPE. At least part of the functions performed by the CNE are split and offloaded to the assigned CPE for performing the part of functions. The method includes: determining: a) network information, including network topology information and network capability information of the network, b) entity location information, including network locations of the entities, and c) function splitting information, including possible configurable functions which can be split; and, based on the determined information of a)-c), jointly optimizing: routing between the network entities, assignments of the CNE to the CPE, and function splits.

Method for providing operating information for a network

A method for operating a plurality of different wireless networks operating at least in part in overlapping frequency bands includes monitoring, by a first wireless transmitter, activity in the overlapping frequency bands. The first wireless transmitter determines whether a channel in the overlapping frequency bands is idle for a predefined time period. Based on the channel being idle for the predefined time period, it is determined that the first wireless transmitter has a transmission opportunity on the channel. The first wireless transmitter measures an amount of time until a next frame boundary on the channel and, based on the amount of time until the next frame boundary being below a threshold, reserves the channel for a fixed duration of time. Based on the amount of time until the next frame boundary being above the threshold, the first wireless transmitter skips the transmission opportunity on the channel.

System and method for improving transmission in wireless networks

A method for operating a plurality of wireless networks includes blocking a channel in a second wireless network (SWN) by a first wireless network station (FWN-S) connected to a first wireless network (FWN) and the SWN within an overlapping frequency band. A time for performing blocking after a busy channel is smaller than a predetermined time period. The method further includes indicating part of a total airtime the channel in the SWN will be occupied by the first FWN-S for transmission. The total airtime is computed as a sum of time slots used for successful transmission, their number being computed such that the transmission performance of the SWN is not degraded more than the level of transmission performance is degraded if the first FWN-S would be operating for transmission within the SWN only.

Method for operating a plurality of wireless networks

A method for configuring resources of a radio access network (RAN) including a radio unit includes monitoring, by a data plane node, a quality of at least one portion of a link between the radio unit and a central processing unit of the RAN; determining, by the data plane node, that the quality of the at least one portion of the link has changed relative to a previous quality of the at least one portion of the link; generating, by the data plane node according to local control logic programmed into the data plane node, a decision specifying a placement for one or more RAN functions; and transmitting, by the data plane node to one or both of the radio unit and the central processing unit, a notification including the decision specifying the placement for the one or more RAN functions.

Growing community of inventors

Heidelberg, Germany

Andres Garcia-Saavedra