Telefonaktiebolaget Lm Ericsson (publ)

Qiang Zhang

Johan Furuskog

Håkan Andersson

Mattias Frenne

Niclas Wiberg

Henrik Sahlin

Stefan Parkvall

Andreas Bergström

Johan Kåredal

Martin Hessler

Tomas Sundin

John Skördeman

Robert Baldemair

Ajit Nimbalker

Ashim Biswas

Anders Elgcrona

Nicolas Schrammar

Marc Bohlin

Magnus Wikström

Hakan C Andersson

Lars Lindbom

Jonas Fröberg Olsson

Arne Simonsson

Wei Zhou

Peter Nauclér

Andreas Bergstrom

Yongqian Chen

Henrick Sahlin

Hákan Andersson

Björn Halvarsson

There is disclosed a method of operating a transmitting radio node in a wireless communication network. The method includes transmitting data signaling utilising a plurality of transmission sources, wherein the data signaling represents a plurality of code blocks. Modulation symbols of a modulation symbol sequence are mapped to the plurality of transmission sources in c-tuples, the modulation symbol sequence representing the plurality of code blocks in which c is dependent on the modulation used for transmitting the signaling. The disclosure also pertains to related devices and methods.

Data signaling for wireless communication networks

Systems and methods are disclosed for transmission and reception of an uplink grant during a gap created in radio resources assigned by a previous multiple Transmit Time Interval (multi-TTI) uplink grant in a system operating according to a Time Division Duplexing (TDD) scheme. In one embodiment, a method of operation of a wireless device operating according to a TDD scheme in a cellular communications network includes: receiving a first uplink grant from a radio network node that assigns first radio resources for a first multiple transmit time interval uplink transmission, the first radio resources comprising a set of consecutive subframes; and interrupting an uplink transmission on the first radio resources during a gap in the first radio resources assigned for the first multiple transmit time interval uplink transmission, the gap comprising a time domain gap within the set of consecutive subframes.

Uplink multi-TTI scheduling in TDD system

Systems and methods for signal processing are provided. The method which may be performed by a radio device comprises determining categories of reference signal resource groups available for a cell. The categories of reference signal resource groups may indicate different usage states of the reference signal resource groups in a communication scheduled for the radio device in the cell. The method further comprises performing signal processing per reference signal resource group, according to the categories of the reference signal resource groups.

Method and apparatus for signal processing

Embodiments herein relate to a method performed by a radio network node for handling transmission of data from a wireless device in a wireless communication network. The radio network node determines a delay value for a transmission of data from the wireless device based on a transmission type of data from the wireless device or a capability of the wireless device. The capability is related to a processing time for processing received data from the radio network node, or for processing data for transmission to the radio network node. The radio network node further transmits an indication, to the wireless device, which indication indicates the determined delay value.

Delaying transmission depending on transmission type and UE processing capabilities

Embodiments herein relate to method performed by a radio-network node for handling a data transmission, from a wireless device to the radio-network node, in a wireless communication network. The radio-network node schedules one or more resources for carrying an uplink data transmission from the wireless device over a channel, and for carrying a feedback transmission, of a downlink data transmission from the radio-network node, over the same channel. The radio-network node transmits a control message to the wireless device, which control message indicates the one or more resources scheduled for carrying the uplink data transmission and the feedback transmission over the same channel.

Radio-network node, wireless device and methods performed therein

A system and method of Random-Access Response, RAR, messaging when a base station employs narrow beamforming. Multiple RAR messages are successively transmitted from the base station to a User Equipment, UE, before any response to a RAR message is received from the UE. Thus, despite any calibration mismatch between Uplink, UL, and Downlink, DL, beams in the beamformed system, a RAR message is not only received by the UE, but is received over the most-suitable DL beam for that UE. Each RAR message may contain a message-specific scheduling-delay indicator in the UL grant carried in the RAR message to provide an adjustable time delay for the UE's uplink transmission scheduled by the UL grant. Multiple RAR transmissions can schedule a single UL transmission at a specific time instance or different UL transmissions at different time intervals. The UE may report to the base station the best DL RAR transmission detected by the UE.

Random-access response with analog beamforming

A guard period for switching between uplink and downlink subframes is created by shortening an uplink subframe, i.e., by not transmitting during one or more symbol intervals at the beginning of the subframe interval. A grant message includes signaling indicating when a shortened subframe should be transmitted. An example method is implemented in a first wireless node configured to transmit data in transmit subframes occurring at defined subframe intervals and having a predetermined number of symbol intervals. This example method includes determining that a transmit subframe is to be shortened, relative to the predetermined number of symbol intervals and, in response to this determination, shortening transmission of the transmit subframe by not transmitting during a beginning portion of the subframe interval for the transmit subframe and transmitting during the remainder of the subframe interval.

Uplink subframe shortening in time-division duplex (TDD) systems

There is disclosed a method of operating a wireless device in a wireless communication network, the method including transmitting feedback signaling including feedback information, the feedback information being encoded with an error coding scheme, wherein an error coding size of the error coding scheme is dependent on a type of the feedback information. The disclosure also pertains to related devices and methods.

Feedback signaling for wireless communication

A guard period for switching between uplink and downlink subframes is created by shortening a downlink subframe, i.e., by not transmitting during one or more symbol intervals at the end of the subframe. A grant message includes signaling indicating when a shortened subframe is being transmitted. An example method is implemented in a receiving node configured to receive data from a transmitting node in subframes having a predetermined number of symbol intervals. In an LTE system, this receiving node may be a UE, and the subframes are downlink subframes. This example method includes determining that a received subframe is to be shortened, relative to the predetermined number of symbol intervals and, in response to this determination, disregarding a last part of the received subframe by disregarding one or more symbols at the end of the received subframe when processing the received subframe.

Downlink subframe shortening in time-division duplex (TDD) systems

A method for operating a wireless communication network, wherein a first member of the network transmits a scheduling message to a secondary member of the network and the secondary member receives the scheduling message. The secondary member schedules sounding signal transmissions and/or a corresponding schedule based on the scheduling message, wherein the scheduling message and/or the sounding signal schedule refers to a schedule for sounding signals based on a status of beam forming performed in the network and/or wherein the sounding signal schedule and/or the schedule message refers to a compact schedule of sounding signals.

Method and apparatuses for operating a wireless communication network

A method in a wireless device for performing random access to a network node. The method comprises receiving a set of downlink beam-specific reference signals, BRS, from the network node, and determining a preferred BRS based on the received signal power for each BRS. The method also comprises selecting, based on the preferred BRS, a random-access resource to be used for transmitting a random-access attempt to the network node, as well as using the selected random-access resource when transmitting a random-access attempt to the network node, whereby the selection of random-access resource indicates to the network node which downlink beam is preferred by the wireless device to be used for downlink transmissions.

System and method for beam-based physical random-access

A method performed by a wireless device () for determining Channel State Information, CSI, estimates to be transmitted in a CSI report for the wireless device () to a network node () in a radio communications network () is provided. The wireless device () receives a message comprising an indication to use CSI estimates corresponding to a determined period of time. In response to said message, the wireless device () determines CSI estimates to be used in the CSI report to the network node () according to the received indication. A wireless device () is also described. A network node () and method therein for controlling CSI estimates transmitted by one or more wireless devices () in CSI reports to the network node () in a radio communications network () are also provided.

Growing community of inventors

Täby, Sweden

Qiang Zhang