Telefonaktiebolaget Lm Ericsson (publ)

Elmar Trojer

Miguel Berg

Chenguang Lu

Per-Erik Eriksson

Jacob Österling

Daniel Cederholm

Jacob Kristian Osterling

Aldebaro Klautau

Leonardo Ramalho

Roland A Smith

Kim Laraqui

Boris Dortschy

Thomas Magesacher

André Mendes Cavalcante

Igor Almeida

Ralf Bergqvist

Marcos Takeda

Fredrik Gunnarsson

Pål Frenger

Bo Hagerman

Fabio Cavaliere

Niklas Jaldén

Luca Giorgi

Ling Chen

Stefan Dahlfort

David Hood

Filippo Ponzini

Yezi Huang

Per Ola Börjesson

Johan Söder

Peter De Bruin

Yue Sun

Björn Skubic

Eduardo Lins De Medeiros

Jaume Rius I Riu

Tsao-Tsen Chen

Gunther Auer

Johan Thorebäck

Rune Johansson

Albin Johansson

Jonathan Olsson

Tomas Andreason

Henrik Almeida

Jonas Emanuel Rosenberg

Stefan Höst

Peter Pääkkönen

Sándor Albrecht

Olof V Tidblad

Michael Petras

Erik Rickard Söderqvist

Lukas Sandström

Inigo Pinilla

Eduardo Medeiros

Nilma Fonseca

Lu Chenguang

Embodiments described herein relate to methods and apparatus for transmitting radio data over a fronthaul network. The method comprises receiving radio data for transmission over the fronthaul network; and translating the radio data between a time domain multiplexing protocol and packet based protocol before transmitting the data over the fronthaul network; wherein the step of translating comprises: receiving control information indicative of a level of congestion over a part of the radio network using the packet based protocol; and modifying the radio data during the step of translating to control the level of congestion.

Methods and apparatus for transmitting radio data over a fronthaul network

A method and transition device for enabling communication of data between a remote radio unit and a central baseband unit in a wireless network. When detecting a first interface configuration used by the remote radio unit and a second interface configuration used by the baseband unit, the transition device configures interface functions, based on the first and second interface configurations. The interface functions are selected from a set of predefined interface functions associated with different interface configurations. The transition device then establishes a data flow between the remote radio unit and the central baseband unit over the transition device, and performs conversion between the first interface configuration and the second interface configuration for data communicated in the data flow, using the selected interface functions.

Method and transition device for enabling communication of data in a wireless network

The present disclosure relates to a method of a radio base station () of controlling allocation of resources to wireless communication devices (), and a radio base station () performing the method. In an aspect, a method of a radio base station () of controlling allocation of resources to wireless communication devices () is provided. The method comprises providing (S) a first location with radio coverage using at least a first frequency band and a second frequency band and a second location with radio coverage using the first frequency band, the second frequency band being located at a higher frequency than the first frequency band and temporarily reallocating (S) resources of the second frequency band from the first location to the second location upon acquiring an indication that a wireless communication device () at the second location requires improved coverage.

Reallocating resources in a wireless communications network

A method, network node and customer premises equipment (CPE) and apparatus for 3Generation Partnership Project (3GPP) Fifth Generation (5G) hybrid fiber coax (HFC)-distributed antenna system (DAS) network with machine learning beam management are disclosed. According to one aspect, a method in a network node includes determining a set of beam weights for each CPE of the plurality of CPE, each set of beam weights being associated with a synchronization signal block, SSB, beam index, each SSB index being associated with a window of time for communication between the network node and CPE associated with a beam ID; and transmitting an SSB index to CPE associated with the beam ID to indicate to the CPE the window of time for communication between the network node and the CPE.

Hybrid fiber cable distributed antenna system (HFC-DAS) network with machine learning beam

A method, network node and customer premises equipment for pre-equalization using beamforming functionality are disclosed. According to one aspect, a method in a network node includes estimating an uplink channel of a hybrid fiber cable network using references signals received from consumer premises equipment, determining a downlink channel using an inverse of the uplink channel estimate, mapping a downlink signal to a plurality of layer-specific signals, and applying beamforming weights to the layer-specific signals to produce layer-specific downlink signals, and summing the layer-specific downlink signals to produce a frequency-compensated downlink signal for transmission over the hybrid fiber cable network.

Pre-equalization using beamforming functionality

Embodiments described herein relate to methods and apparatus for managing packet dropping in the fronthaul network. A method in a packet processing system includes receiving a plurality of data packets for transmission over the fronthaul network, wherein the plurality of data packets include radio data; obtaining first information for the plurality of data packets, wherein the first information is related to transmission of the radio data over a radio access interface in the radio network; and responsive to a requirement to decrease a load in the fronthaul network, selecting at least one of the plurality of packets to drop by applying at least one prioritization rule to the plurality of data packets based on the obtained first information.

Methods and apparatus for packet dropping in a fronthaul network

A method performed by an IRU of a base station system, the base station system comprising the IRU, a BBU connected to the IRU, and a first RH connected to the IRU via a packet data network. The first RH is arranged for wireless transmission in RF of a plurality of antenna carriers to UEs. The method comprises receiving, from the BBU, a plurality of first digital representations of the plurality of antenna carriers of the first RH, each first digital representation representing one antenna carrier, the plurality of first digital representations being received in a baseband frequency range, frequency multiplexing the plurality of first digital representations of the plurality of antenna carriers into a second digital representation over a first bandwidth, and transmitting the second digital representation to the first RH.

Methods, intermediate radio units and radio heads of base station systems for transmission of antenna carriers

Disclosed is a method performed by an IRU () of a base station system (), the base station system comprising the IRU (), a BBU () connected to the IRU (), and a first RH () connected to the IRU () via a packet data network (). The first RH () is arranged for wireless transmission in RF of a plurality of antenna carriers to UEs (). The method comprises receiving, from the BBU (), a plurality of first digital representations of the plurality of antenna carriers of the first RH (), each first digital representation representing one antenna carrier, the plurality of first digital representations being received in a baseband frequency range, frequency multiplexing the plurality of first digital representations of the plurality of antenna carriers into a second digital representation over a first bandwidth, and transmitting the second digital representation to the first RH ().

A method performed by an encoder of a base station system, for handling a data stream for transmission over a transmission connection between a remote unit and a base unit of the base station system, the remote unit being arranged to transmit wireless signals to, and receive from, mobile stations. The method comprises quantizing a plurality of IQ samples, converting the quantized plurality of IQ samples to IQ predictions, calculating per sample a difference between the quantized plurality of IQ samples and the IQ predictions in order to create IQ prediction errors. The method further comprises quantizing the IQ predictions or the IQ prediction errors, entropy encoding the IQ prediction errors and sending the entropy encoded IQ prediction errors over the transmission connection to a decoder of the base station system. The method can be performed by a decoder.

Methods, decoder and encoder for handling a data stream for transmission between a remote unit and a base unit of a base station system

A method performed by a RRU of a distributed base station system, which further comprising a BBU, connected to the RRU. The RRU is arranged to wirelessly communicate with at least one UE. The method comprises determining a downlink channel estimate from received uplink signals and determining a first part of precoding coefficients to be used for precoding signals to be sent downlink to the at least one UE based on the determined downlink channel estimate. The method further comprises receiving a second part of the precoding coefficients from the BBU, precoding downlink signals of data received from the BBU using the first and the second part of the precoding coefficients and sending the precoded downlink signals to the at least one UE via the plurality of antennas.

Methods, systems and units of a distributed base station system for handling of downlink communication

Described is a method performed by an encoder of a base station system () of a wireless communication network, for handling a bit stream for transmission over a transmission link () between a remote unit () and a base unit () of the base station system. The remote unit is arranged to transmit wireless signals to and receive from mobile stations (). The bit stream comprises a first OFDM symbol and a second OFDM symbol, each OFDM symbol comprising a number of consecutive IQ samples. The method comprises, for a first number of the IQ samples situated at a boundary between the first and the second OFDM symbol, transmitting, over the transmission link to a decoder of the base station system, the first number of IQ samples having a representation spanning a first amplitude range. The method further comprises, for a second number of IQ samples of the second OFDM symbol, following the first number of IQ samples, converting, using a predictive filter, individual of the second number of IQ samples to IQ prediction errors, where the IQ prediction errors have a representation spanning a second amplitude range that is smaller than the first amplitude range, and transmitting the IQ prediction errors over the transmission link to the decoder.

Method, decoder and encoder for handling a bit stream for transmission over a transmission link between a remote unit and a base unit of a base station system

A method () of controlling utilization of a fronthaul link in a wireless communication network, the fronthaul link being configured to transport a time-domain sample representation of a carrier having a traffic load, the time-domain sample representation of the carrier being generated at a bit rate. The method comprising: obtaining () an indication of a traffic load of the carrier; determining () a new bit rate for the time-domain sample representation of the carrier, the new bit rate being dependent on the indication of the traffic load of the carrier; and generating () a control signal configured to cause the time-domain sample representation of the carrier to be generated at the new bit rate.

Apparatus and method of controlling utilization of a fronthaul link in a wireless communication network

A method performed by an intermediate unit of a distributed base station system of a wireless communication network. The distributed base station system has a first base unit and a second base unit connected to the intermediate unit. The intermediate unit is further connected to a first remote unit, which is further connected for distributing wireless signals to pieces of User Equipment (UEs). The intermediate unit receives, from the first base unit, first data and sends the first data over a point-to-point connection to the first remote unit for further distribution wirelessly over a radio channel to the UEs. In response to the reception of the first data, a first indication is sent to the second base unit that the radio channel is free. The second base unit can send second data that is then to be sent from the remote unit towards the UEs on the radio channel.

Methods and nodes of a distributed base station system for improved downlink transmission

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Täby, Sweden

Elmar Trojer