Telefonaktiebolaget Lm Ericsson (publ)

Efthymios Stathakis

Gustav Wikström

Zhenhua Zou

Yu Wang

Kittipong Kittichokechai

Zhao Wang

Swarup Kumar Mohalik

Martha Vlachou-Konchylaki

Arthur Gusmao

Daniel Chen Larsson

Shaohua Li

Jonas Fröberg Olsson

Ali Behravan

Niklas Andgart

Håkan Björkegren

Joerg Niemoeller

Alexey Shapin

Stéphane Tessier

Jörg Niemöller

A method of configuration in a communications network includes: obtaining operational data relating to operation of at least one network node, the operational data including, for each of a plurality of time periods, data relating to at least one configuration parameter of the network node and data relating to at least one performance indicator of the network node; defining a plurality of actions, wherein each action corresponds to a specific set of values of the at least one configuration parameter in two successive time periods; and defining a plurality of states, wherein each state corresponds to one specific set of values of the operational data. A probabilistic graph is constructed from the operational data, the probabilistic graph indicating, for a plurality of the defined states, a probability that an action will lead to a transition to a respective other state.

Configuration of a communications network

The properties of a plurality of operational units are estimated by generating a central system state graph model representing the properties of the plurality of operational units as probabilities of transitions between states for the plurality of operational units, where the states represent operational data. Then a respective updated system state graph model is generated for each of the plurality of operational units, based on the central system state graph model and based on new operational data for the respective operational unit. A distance measure is determined between the respective updated system state graph models. If the distance measure fulfils a divergence criterion, a plurality of new central system state graph models are generated, each representing the properties of a respective subset of the plurality of operational units as the probabilities of transitions between states for the respective subset of the plurality of operational units.

Estimating properties of units using system state graph models

A method and a receiving node for determining a channel window length (l{circumflex over (&#x2003;)}) for a transformed domain channel estimator, the channel window length (l{circumflex over (&#x2003;)}) to be applied for a particular reference signal (RS) carrying symbol. At least two subsets (A, A, . . . ) of received RS carrying symbols are obtained out of a set of RS carrying symbols ({S, S, . . . }), where the particular RS carrying symbol is included in at least one of the at least two subsets (A, A, . . . ). A corresponding hypothesis channel window length (l*) is determined for the at least one of the subsets (A, A, . . . ) based on a set of channel responses. The channel window length (l{circumflex over (&#x2003;)}) for the particular RS carrying symbol is then determined based on the corresponding hypothesis channel window length (l*).

Method and receiving node for determining channel window length

Embodiments of the disclosure generally relate to resource configuration. A network device configures, based on an access mode of a terminal device, an information transmission pattern for the terminal device from a first resource set associated with a MOMA mode and a second resource set associated with a NOMA mode.

Method and device for resource configuration

A method, apparatus and computer-readable mediums relating to the transmission of data packets in a wireless communication network. The method, performed by a node of a wireless communication network, for selecting a feedback scheme associated with transmission of data packets over one or more radio bearers to one or more wireless devices. The method comprises: upon receiving a data packet for transmission to a wireless device, starting a timer associated with the data packet, the timer being set to expire after a period of time which varies as a function of a latency requirement for the data packet; and, in dependence on a remaining time value for the timer, selecting one of a plurality of feedback schemes for transmission of the data packet.

Methods, apparatus and computer-readable mediums relating to scheduling and feedback schemes for the transmission of data packets in a wireless communication network

A receiving node in a wireless communication network is operable to determining a process identifier for a repeated transmission by allocating, to a transmitting node, a plurality of resources for use with repeated transmissions, receiving a transmission from the transmitting node where the transmission uses at least one resource from the plurality of resources assigned to the transmitting node for use with repeated transmissions, and determining the process identifier for the transmission based on the at least one resource from the plurality of resources for use with repeated transmissions used by the transmission. Related methods and systems are also disclosed.

HARQ PID signaling for SPS UL

A method in a wireless receiver for estimating a channel. The method includes receiving a signal comprising a plurality of transmission layers, each layer having at least one reference signal according to a predefined reference signal sequence; determining a window size for performing a sampling operation, wherein the operation is performed in a transformed domain of the received signal; selecting a channel tap length, from a range of channel tap lengths, wherein the selection is based on the window size, a noise mean and a noise variance. The channel estimation is performed from a reference signal sequence for the at least one reference signal and based on samples corresponding to the selected channel tap length.

Channel estimation in a multi-layer system

A method of operating a network node in a Radio Access Network includes configuring a first User Equipment with a first transmission pattern indicating time-frequency resources and configuring a second UE with a second transmission pattern indicating time-frequency resources. The method further includes receiving a first signal comprising a first message from the first UE, using a first time-frequency resource indicated by the first transmission pattern and receiving a second signal comprising a second message from the second UE, using a second time-frequency resource indicated by the second transmission pattern. The first and second time-frequency resources, at least partly, overlap. Further, the method includes decoding the first or the second message, based on a received third signal comprising the first message from the first UE, wherein the third signal is received using a third time-frequency resource indicated by the first transmission pattern.

Method and apparatus for low-latency transmission using shared SR-less resources

A method performed by a node in a wireless communications network for improving multi-user transmissions in the wireless communications network is provided. The node determines channel estimates based on demodulation reference signals, or a data symbol in at least one Physical Resource Block, PRB, of the latest received subframe. Then, the node determines a phase difference and an amplitude difference between Resource Elements, REs, in a first set of contiguous REs in the at least one PRB of the latest received subframe based on the obtained channel estimates. The node then pre-equalizes at least one channel within at least one PRB of a transmission subframe by aligning the phase and amplitude of REs in a second set of contiguous REs therein based on the determined phase and amplitude differences. A node for improving multi-user transmissions in the wireless communications network is also provided.

Nodes and methods therein for improving multi-user transmissions in a wireless communications network

According to some embodiments, a method of reporting channel quality information for use in a wireless device of a wireless communication network comprises: measuring a reference signal to determine a signal to noise ratio; determining a first channel quality index (CQI) using the signal to noise ratio and a first transport block error probability (e.g., BLER); determining a second CQI using the signal to noise ratio and a second transport block error probability; and reporting the first CQI and the second CQI to a network node.

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Stockholm, Sweden

Efthymios Stathakis