Telefonaktiebolaget Lm Ericsson (publ)

Optis Cellular Technology, LLC

Magnus Larsson

Muhammad Ali Kazmi

Joakim Axmon

Robert Baldemair

Torgny Palenius

Christian Bergljung

Magnus Sandgren

Stefan Parkvall

John Walter Diachina

Walter Müller

Imadur Rahman

Bikramjit Singh

Jung-Fu Cheng

Iana Siomina

Henning Wiemann

Mattias Bergström

Shaohua Li

Peter Alriksson

Niklas Andgart

Christopher Peter Callender

Fredrik Nordström

Fredrik Huss

Oskar Mauritz

Christian Skärby

Meng Wang

Thomas Chapman

Lisa Boström

Farshid Ghasemzadeh

Olav Queseth

Maomao Chen

Johan Sköld

Jan-&angst;ke Engstrand

Stefan Fritze

Jan-Åke Engstrand

Rickard Svensson

Walter MÜLLER

Lisa BOSTRÖM

Mattias Tan BERGSTRÖM

Christian SKÄRBY

Jan- Ke Engstrand

A method and system are disclosed for a network node or wireless device (WD) to communicate with another WD or network node. The node or WD is configured to perform at least one timing measurement over a measurement period (T) on signals transmitted between the node or WD and another node or WD and, during T, determine if there is any change in a fixed time offset (FTO) used by the nodes for transmitting a reference signal. If there is a change in the FTO over T, the network nodes or WDs are configured to perform an operational task and, if not, continue performing the timing measurement over T. The operational tasks may include discarding the timing measurement, restarting the timing measurement, extending the measurement time, informing another node about a change in the FTO or informing another node about an action taken by the network node or WD.

Positioning timing measurement procedure under timing offset change

According to some embodiments, a method performed by a wireless device capable of operating in a time sensitive network (TSN) comprises obtaining a time synchronization capability of the wireless device and transmitting an indication of the time synchronization capability to a network node. In particular embodiments, the time synchronization capability comprises one or more of a downlink receive tracking accuracy supported by the wireless device, a receive to transmit relative timing accuracy supported by the wireless device, an internal timing accuracy supported by the wireless device, and a propagation delay (PD) compensation method selection capability supported by the wireless device.

User equipment capabilities for time sensitive networking

Embodiments include methods for a network node in a RAN to support timestamping of time-sensitive network (TSN) messages received by a UE. Such methods include sending one of the following information to the UE for use in timestamping of TSN messages: a second indication of one of multiple available downlink propagation delay (DL PD) compensation methods that is selected by the network node the UE; or a DL PD compensation value, determined by the network node based on one of the available DL PD compensation methods selected by the UE on a different one of the available DL PD compensation methods selected by the network node for the UE. Such methods also include sending, to the UE proximately after sending the information, an indication of a system clock time, associated with the RAN, to be compensated by the UE based on the information.

Selecting propagation delay compensation for time-sensitive network (TSN) information

A method, system and apparatus for switching of a transmission between cell groups. According to one aspect of the disclosure, a network node is configured to provide a first cell on a first carrier and to communicate with a wireless device where the first cell is part of a first cell group is provided. The network node includes processing circuitry configured to: receive a transmission from a wireless device after a time period following a switching of a transmission from a second cell being part of a second cell group, the first cell group being different from the second cell group; and determine a timing value corresponding to the time period, the time value being associated at least in part with the second cell group.

Switching of transmission between cell groups

A method performed by a wireless device for determining a timing advance (TA) offset in a new radio (NR) network is described herein along with associated network devices and systems. An exemplary method includes obtaining an indication of whether a carrier frequency of the NR network coexists with a carrier frequency of a long term evolution (LTE) network, determining, based on whether the carrier frequency of the NR network coexists with carrier frequency of the LTE network, a TA offset for uplink transmission; and transmitting an uplink transmission using the determined TA offset.

Signaling TA-offset in NR

At least one antenna node is controlled to provide power correction instructions to a wireless communication device at an appropriate time when switching between uplink reception radio lobes, irrespective of which direction the reception radio lobes are directed in relation to the direction of movement of the wireless communication device. Loss of data and receive blocking problems can thereby be at least mitigated.

Power control in high speed scenario

A network node is connected to a plurality of antenna nodes that are located along a constrained path where a plurality of wireless communication devices are located. The antenna nodes are controlled to maintain reception radio lobes substantially along the path such that the wireless communication devices can perform uplink radio communication with the network node via the reception radio lobes. At least one RF signal is detected in a PRACH, with a first PRACH configuration. A determination is made of a radio frequency offset of the detected RF signal. A determination is then made that the at least one RF signal originates from a wireless communication device of a specific subset among the plurality of wireless communication devices. Each wireless communication devices in the specific subset is associated with the radio frequency offset. A second PRACH configuration that is common to all wireless communication devices in the specific subset of wireless communication devices is then provided to the wireless communication device.

Random access handling in single frequency network with unidirectional antenna node arrangement

A network node is connected to a plurality of antenna nodes that are located along a constrained path where a plurality of wireless communication devices are located. The antenna nodes are controlled to maintain reception radio lobes substantially along the path such that the wireless communication devices can perform uplink radio communication with the network node via the reception radio lobes. At least one radio frequency, RF, signal is detected and a determination is made that the detected at least one RF signal originates from a respective wireless communication device of a specific subset among said plurality of wireless communication devices. The specific subset comprises wireless communication devices that are associated with a common radio frequency offset. An allocation of a common uplink radio communication resource is then made for all wireless communication devices in the specific subset of wireless communication devices.

Uplink resource allocation in a unidirectional single frequency network arrangement for high speed trains

Antenna nodes are controlled to maintain a respective radio cell, each cell having one and the same physical cell identity. The antenna nodes are further controlled to maintain the respective radio cell in a single direction substantially along a path such that each wireless communication device, during movement in a movement direction along the path, can connect either to consecutive antenna nodes towards which the wireless communication device is moving or connect to consecutive antenna nodes away from which the wireless communication device is moving.

Radio cell arrangement in high speed scenario

The embodiments disclosed herein relates to a wireless communication device, network nodes and methods therein for handling multiple connectivity. A method in a network node comprises determining the extent to which a wireless communication device requires different signals received from different non-co-located radio network points to be synchronized in order to operate with multiple connectivity. The method further comprises deciding whether to configure the WCD to operate with multiple connectivity, based on said determination.

Adaptation of dual connectivity procedures

Flexible carrier aggregation is provided for a radio communications system. A capability is determined to communicate over a radio interface using multiple radio frequency component carriers. Each of the multiple component carriers is configurable with one or more control channels in a first mode of operation and with no control channels in a second mode of operation. Configuration information for one of the multiple radio frequency component carriers is signaled to indicate at least one of the component carriers is configured to operate in a selected one of the first mode of operation and the second mode of operation so that a network radio node and a user equipment radio node can communicate using the selected mode of operation.

Signaling for flexible carrier aggregation

A network node is connected to a plurality of antenna nodes that are located along a path where a plurality of wireless communication devices are located. The antenna nodes are controlled () to maintain reception radio lobes substantially along the path such that the wireless communication devices can communicate with the network node via the reception radio lobes. From a detected () radio frequency signal, a determination () is made that a UE belongs to a group of UEs having common Doppler radio frequency characteristics. This determination then enables processing () of the received signal involving the common Doppler characteristics.

Processing uplink signals in high speed scenario

A method of handling TAGs in a UE capable of CA is disclosed. The method comprises monitoring time differences between signals received from any two serving cells and determining for each time difference whether a configured capability of the UE supports the time difference. A wireless telecommunication device and a computer program are also disclosed.

Handling timing differences in timing advance groups in a communication device

A first network node has first antenna nodes located along a track and associated with a first cell. Some of them serve a first cell overlap region that overlaps a second cell overlap region of second antenna nodes connected to a second network node. Some first antenna nodes form downlink beams in a same direction with power levels controlled such that respective amounts of overlap between the downlink beams and respective power levels of the downlink beams jointly cause the first cell's overlap region to emulate a cell border for a user equipment travelling at high speed. Emulated cell border signal power is lower at locations closer to an emulated cell outer edge than at more distant locations. Emulated cell border length is sufficient to cause the travelling user equipment to be within the emulated cell border long enough to successfully perform a handover between the first and second cells.

Cell boundary crossing in a unidirectional SFN for high speed trains

It is presented a method for obtaining a capability of channel spacing between component carriers used in carrier aggregation for a user equipment, UE. The method is performed in a network node and comprises the step of: determining, from a plurality of alternatives, the capability of channel spacing for the UE based on signalling between the UE and the network node, the channel spacing capability comprising at least one of the alternatives of: a multiple of 300 kHz, a multiple of 15 kHz and any other channel spacing. A corresponding network node and UE are also presented.

Growing community of inventors

Sollentuna, Sweden

Magnus Larsson