Telefonaktiebolaget Lm Ericsson (publ)

Ramon Delgado

Katrina Lau

Richard Middleton

Torbjörn Wigren

Iana Siomina

Ying Sun

Robert Karlsson

A method for controlling acknowledgement signalling in a multi-point communication system comprises receiving (S), in a wireless device, a data item over a first signalling path out of a plurality of possible signalling paths. Signalling path information associated with the received data item is obtained (S). A transmission of an acknowledgement message for the data item is initiated (S) to be performed over a second signalling path out of the plurality of possible signalling paths selected in dependence of the obtained signalling path information. Alternatively, or in combination, initiating of a transmission of an acknowledgement message comprising attaching of information of the identity of the second signalling path to the acknowledgement message. Methods, performed in a network node, assisting the wireless device are also disclosed. Devices for the methods are also presented.

Management of acknowledgement signalling in a multi-point communication system

According to a first aspect, there is provided a method for delay alignment in a multi-point communication system. The method comprises determining of a respective reference value of round trip time for n+1 signalling paths in the multi-point communication system, where n>0. The determination is performed using n reference values of round trip time skews between a respective signalling path and a single reference signalling path of the n+1 signalling paths, and a reference value of a sum of round trip times over all of the n+1 signalling paths as exclusive input values. The respective reference values of round trip times are limited within a predetermined allowed interval for round trip times. The method further comprises performing of a separate, preferably globally stable, control of data signalling in each single one of the n+1 signalling paths based on the respective reference values of round trip times.

Stable multi-point alignment

The disclosure provides, inter alia, a method performed by a wireless receiving node for receiving a data stream from one or more wireless transmitting nodes, the data stream comprising a sequence of data items. The method comprising: receiving an indication of an algorithm from a wireless transmitting node of the one or more wireless transmitting nodes; receiving a plurality of data packets from the one or more wireless transmitting nodes, each data packet comprising respective duplicate copies of data items belonging to the data stream; and utilizing the algorithm to select, based on respective times at which the data packets are received, for each position in the sequence, one or more of the duplicate copies of data items for reconstruction of the data stream.

Methods, apparatus and machine-readable media relating to transmission and reconstruction of data streams using data duplication

A method for generating a probability map for a cell served by a network node is provided. The method includes generating a first probability map (P) indicating a likelihood of primary beam directions (step). Generating the first probability map includes recording a first direction of a first user equipment (UE), the first direction indicating a direction of a first beam (e.g., a first set of antenna weights (a.k.a., precoding vector)) associated with the first UE when the first UE appears in the cell served by the network node. The method further includes generating a second probability map (P) indicating a joint likelihood of primary and secondary beam directions (step). Generating the second probability map includes recording a second direction of a second beam associated with the first UE when the first UE switches from the first beam to the second beam, the second direction being recorded in association with the first direction.

Efficient beam searching

A method by a first network node for handling directions of transmission of beamformed beams by a first radio network node. Both nodes operate in a wireless communications network. The first network node determines, out of a set of directions in which the first radio network node is capable of transmitting the beams, a subset of directions of transmission of the beams having a probability of detection above a threshold, by a first wireless device. The determining is based on data obtained from previous attempts of positioning one or more second wireless devices using at least some of the directions. The first network node also initiates providing, to at least one of the first radio network node and a second network node operating in the wireless communications network, an indication of the determined subset.

First network node methods therein for handling directions of transmission of beamformed beams

Embodiments herein relate to a network node operable in a radio communication network and a method performed by the network for communication between the network node and a wireless device. The method comprises obtaining () information associated with a channel quality of a channel between the network node and the wireless device; and estimating () respective one or more variables associated with the channel quality based on the obtained channel quality information. The method () further comprises determining () an Outer Loop Link Adaptation, OLLA, adjustment based on the obtained channel quality information, and based on the estimated respective one or more variables associated with the channel quality, and when the obtained channel quality information indicates that the channel performance is acceptable: also based on a Sequential Hypothesis Testing, SHT, of the obtained channel quality information.

Network node and method for outer loop link adaption

There is provided a method performed by a network node for determining the transmit power to be used on a physical channel. The method comprises the step of obtaining values for the geometry factors G of a set of User Equipments, UEs. The method also comprises the step of creating, based on the obtained geometry factors and representations of the statistical moments of the geometry factors, a statistical measure G* for the set of UEs. The method also comprises the step of determining a value representing the transmission power for physical channel transmissions based on a power control expression for physical channel transmissions comprising the statistical measure G* for the set of UEs, and setting the transmission power to the determined value. A corresponding network node and a corresponding computer program is also provided.

Growing community of inventors

Elermore Vale, Australia

Ramon Delgado