Telefonaktiebolaget Lm Ericsson (publ)

Optis Cellular Technology, LLC

Anders Jonsson

Namir Lidian

Martin Skarve

SaiRamesh Nammi

Gunnar Bergquist

Mikael Wittberg

Fredrik Ovesjö

Torbjörn Wigren

Angelo Centonza

Janne Peisa

Ingemar Johansson

Samir Shah

Ina Widegren

Linda Brus

Bo Göransson

Jose Luis Pradas

Nianshan Shi

Hans Hannu

Kai-Erik Sunell

Matteo Fiorani

Karin Lagergren

Peter Ökvist

Elena Myhre

Kjell Larsson

Filip Barac

Stephen G Craig

Markus Ringström

Samuel Axelsson

Roger Wallerius

Stefan Wahlman

Erik De Wit

Nils Brännström

Aleksandar Jovanovic

Jack Zeyu Song

Peter Larsen

Christer Henriksson

Louise Sun

Uffe Winberg

Charles G Lignell

Chung M Lee

Maria Hallmen

Johan Husman

Sairamesh Nammi

Aleksander Jovanovic

The present disclosure relates to the field of wireless communication, and in particular to a method and arrangement for improving flow control interaction in a low latency distributed radio access network, RAN, including an upper layer RAN node and at least one lower layer RAN node. The method includes determining a Packet Data Convergence Protocol, PDCP, Protocol Data Unit, PDU, buffer dwell time target, BDTT, and providing the BDTT to the upper layer RAN node and/or the lower layer RAN node.

Method and arrangements for desired buffer size target time

A method performed by a first network node, for deciding a configuration to be used in a data communication between the first network node and a second network node in a wireless communications network is provided. The first network node receives a second message from the second network node. The second message includes user plane configuration information. The user plane configuration information includes a vendor identity of the second network node, a highest user plane protocol version supported by the second network node and a set of proprietary features of the vendor that are supported by the second network node. The second message is conveyed by using a frame structure according to a protocol specification that is being negotiated. The first network node decides a user plane vendor configuration to be used in the data communication between the first network node, and the second network node.

Network node and method in a wireless communications network

A method performed by a first unit for handling a connection between the first unit and multiple second units in a wireless communications network is provided. The first unit obtains from each of the multiple second units a respective indication of which one or more version of NR User plane protocol (NR-U) it supports. The first unit decides which version of NR-U that is possible to use for the connection based on the indications received from the multiple second units.

First unit, second unit and methods in a wireless communications network

Embodiments include methods for handling data units in a communication protocol layer (e.g., PDCP) of a network node for a wireless communications network. Such methods include receiving, from a lower protocol layer, one or more first data units with corresponding first sequence numbers. Such methods include, upon expiration of a first timer, forwarding the first data units to a higher protocol layer without receiving one or more second data units, from the lower protocol layer, with corresponding second sequence numbers that are lower than the first sequence numbers. Such methods include forwarding, to the higher protocol layer, any of the second data units that were received from the lower protocol layer during a second time period after expiration of the first timer. Other embodiments include network nodes (e.g., base stations, UEs) configured to perform such methods, as well as computer-readable media containing instructions that embody such methods.

Network node and methods therein for packet data convergence protocol (PDCP) reordering

Methods and devices for monitoring a radio link control, RLC, communication path for transmitting/receiving data units, DUs are disclosed. The methods/devices including or triggering determining a decline of the RLC communication path based on a timer for one or more unacknowledged/outstanding DUs transmitted/received on the RLC communication path.

Technique for monitoring a radio link control (RLC)

In one aspect, one or more network nodes configured control the use of data duplication (DD) for a UE simultaneously served by two or more distributed transmission units (DUs) receive from one or more of the DUs, feedback information. The one or more network nodes determine, based on the feedback information, whether to activate DD for transmissions to the UE.

NR user plane signaling controlled triggering of PDCP duplication

A network nodeand a method for Packet Data Convergence Protocol (PDCP) reordering. The network node is operating in a wireless communications network. The network node buffers in order one or more first data units received out of order by a PDCP layer, wherein the one or more first data units are received from a lower layer during a first time period, and wherein the lower layer is a layer below the PDCP layer. When the first time period has expired, the network node forwards the one or more buffered first data units in order to an upper layer and starts a second time period. Further, the network node forwards, to the upper layer and in any order, one or more second data units received from the lower layer during the second time period.

Methods and devices for monitoring a radio link control, RLC, communication path for transmitting/receiving data units, DUs are disclosed. The methods/devices comprising or triggering determining a decline of the RLC communication path based on a timer for one or more unacknowledged/outstanding DUs transmitted/received on the RLC communication path.

Technique for monitoring a radio communication

Techniques for signaling radio link control (RLC) status reports to a wireless network, such as a network supporting multi-carrier High-Speed Downlink Packet Access (HSDPA). An example method performed in a mobile terminal comprises calculating a throughput estimate data transmissions to the mobile terminal, determining a rate at which to send radio link control status reports, based on the throughput estimate, and sending radio link control status reports to the wireless network node at the determined rate. In some embodiments, the mobile terminal determines the rate at which to send radio link control status reports by comparing the throughput estimate to a threshold value and selecting the rate based on the comparison. The threshold value may be received from the wireless network node prior to the comparison.

RLC status reporting for eight-carrier HSDPA

Recovery control is provided for recovering data packet flow control between a network node and a radio base station over a radio network interface. The base station communicates with at least one user equipment, UE, over a radio interface and measures information relating to a data transmission rate over the radio interface and an amount of a downlink packet queue in the base station associated with the UE communication. In one embodiment, the base station sends at least some of the measurement information to the network node. A process controller in the network node processes the measurement information to determine a desired amount to be stored in the downlink packet queue. The process controller determines a commanded bit rate to transmit data from the network node to the downlink packet queue based on the determined desired amount and transmits data to the radio base station in accordance with the commanded bit rate.

Methods and apparatuses for recovering data packet flow control against radio base station buffer run away

It is presented a method for managing a sequence number (SN) range for radio link control (RLC) entities in a radio access network () during an on-going connection. The method is performed in a transmitting node () of the radio access network and comprises the steps of: monitoring () send state variables for a transmission window; determining () to change the SN range based on the send state variables; and transmitting () a control message when the SN range is determined to change. It is also presented a transmitting node, a receiving node, a method performed in a receiving node, a computer program and a computer program product.

Managing a sequence number range for radio link control entities in a radio access network during an on-going connection

A method implemented in a first peer entity communicating with a second peer entity using a predetermined protocol includes receiving a first packet from the second peer entity. The method further includes identifying an instruction field included within the first packet, the instruction field indicating a predetermined function to be performed by the first peer entity. The method further includes determining whether the predetermined function can be performed by the first entity. The method also includes transmitting a second packet to the second peer entity indicating whether the first entity performs the predetermined function.

Method and apparatus for activation and deactivation of radio network functionality

A Radio Base Station (RBS) and a method performed by the RBS comprises receiving a frame Ffrom a network node, the frame having a sequence number N. If the last received frame F, prior to the received frame F, has a sequence number lower than N&#x2212;1, then starting a first timer Thaving a predefined length in time and temporarily storing the received frame F. If a subsequent frame Fhaving a sequence number lower than N and higher than the sequence number of frame Fis received, then the received frame Fis stored. When all frames having a sequence number between the sequence number of frame Fand N have been received during the predefined length of the first timer T, then forwarding the stored frames and/or received frames to the UE in the order of the sequence numbers.

RBS, RNC and respective methods performed thereby for transmitting data to a UE

Recovery control is provided for recovering data packet flow control between a network node () and a radio base station () over a radio network interface (). The base station communicates with at least one user equipment, UE, () over a radio interface () and measures information relating to a data transmission rate over the radio interface and an amount of a downlink packet queue () in the base station associated with the UE communication. In one embodiment, the base station sends at least some of the measurement information to the network node. A process controller () in the network node processes the measurement information to determine a desired amount to be stored in the downlink packet queue. The process controller determines a commanded bit rate to transmit data from the network node to the downlink packet queue based on the determined desired amount and transmits data to the radio base station in accordance with the commanded bit rate.

Some embodiments herein relate to a method in a radio network controller () for transmitting data to a user equipment () in a wireless communication system (). The radio network controller () is communicating over a Radio Link Control layer with the user equipment (). The radio network controller transmits a packet data unit to the user equipment (). The packet data unit comprises a header with a first field, which first field comprises bits for a sequence number of the packet data unit. The header further comprises a second field comprising at least one bit indicating that a third field of the header comprises bits for the sequence number as an extension of bits to the first field for the sequence number.

Packet data unit, a receiving communication device, a radio network controller and methods therein for transmitting data from the radio network controller to the user equipment

Growing community of inventors

Täby, Sweden

Anders Jonsson