Abstract: Mechanisms for calibrating radio frequency branches of a radio transceiver device in a radio access network node. The method includes co-scheduling downlink time/frequency resources for terminal devices in accordance with a set of terminal device identifiers. One of the terminal device identifiers is not of any terminal device served by the radio access network node. The downlink time/frequency resources for this terminal device identifier define time/frequency resources for calibrating the radio frequency branches. The method includes determining a difference in amplitude/phase between the radio frequency branches by analysing a signal as received via an internal coupler unit in the radio transceiver device. The signal represents the time/frequency resources as transmitted over at least some of the radio frequency branches.

Abstract: The present disclosure provides a method (100) at a first network node and a method (300) at a second network node. The method (100) at the first network node comprises performing (110) scheduling in a first frequency band and providing (120) information related to a result of the scheduling to the second network node. The method (300) at the second network node comprises obtaining (310) information related to a result of scheduling by the first network node in a first frequency band and determining (320), based at least on the information, a size of a guard band between the first frequency band and a second frequency band to be scheduled by the second network node.

Abstract: Embodiments of the present disclosure provide methods and apparatuses for RIS node in a communication network. A method performed by a reconfigurable intelligent surface, RIS, node, comprising: communicating with a base station, BS, in a communication network, to attach to the BS, via an access procedure; further communicating with the BS according to scheduling in the communication network, to receive a configuration from the BS; and reflecting wireless signals in the communication network, at least based on the configuration. According to embodiments of the present disclosure, the RIS node can be configured dynamically by a base station. Therefore, embodiments of the present disclosure will provide a communication network with control capability on RIS nodes/devices and make the RIS nodes/devices to have manageable behaviors.

Abstract: The present disclosure discloses methods and devices for wireless communication. Specifically, a method for resource allocation at a network device is provided. The method includes allocating a first frequency band to at least one first terminal device utilizing a first radio access technology (RAT), and allocating a second frequency band to at least one second terminal device utilizing a second RAT. The first frequency band is at least partly overlapped with the second frequency band, and the overlapped part of the first and second frequency bands is spatially multiplexed between the at least one first terminal device and the at least one second terminal device.

Abstract: Provided is a method in a network device for radio beam determination. The method includes: obtaining current information data related to a terminal device; and estimating a candidate radio beam configuration for communication with the terminal device based on the current information data by using a probabilistic mechanism, algorithm or policy that is obtained by analyzing historical radio beam configurations for communication with the terminal device and history information data related to the terminal.

Abstract: Embodiments of the present disclosure provide a method in a base station for coordinating resources in a wireless communications system with carrier aggregation in which a first group of terminal devices is served by a primary cell and one or more secondary cells under control of the base station. The method comprises obtaining information indicating arrival of a second group of terminal devices at coverage of the base station. A speed of any terminal device of the second group is higher than a speed of any terminal device of the first group. The method also comprises releasing resources on at least one secondary cell of the one or more secondary cells and allocating the released resources to the second group of terminal devices.

Abstract: The present disclosure proposes a method, a network element, and a non-transitory computer readable storage medium for scheduling a user equipment (UE) for transmission. The method comprises: determining, for the UE, a first downlink channel status at a first time point and a second downlink channel status at a second time point which is later than the first time point, respectively, determining, for the UE, a temporal coherence between the first downlink channel status and the second downlink channel status; and scheduling the UE based on the determined temporal coherence.

Abstract: Embodiments of the present disclosure provide method and apparatus for determining communication parameter. A method performed by a network node. The method includes obtaining measurement data for at least one terminal device. The method further includes filtering the measurement data to remove error measurement data by a machine learning algorithm. The method further includes determining at least one communication parameter based on the filtered measurement data.

Abstract: The present disclosure provides a method in an application server for Quality of Service, QoS, control. The method includes: determining to adjust a QoS associated with a service for one or more terminal devices; and transmitting, to a control function entity, a request for adjusting the QoS for the one or more terminal devices.

Abstract: The present disclosure proposes a method, a network element, and a non-transitory computer readable storage medium of scheduling a UL RS resource for an MU-MIMO enabled UE. The method is performed at a network element to schedule a UL RS resource for an MU-MIMO enabled UE. The method comprises: determining whether channel status information for the UE is known or not; assigning a first RS resource from a first RS group to the UE in response to determining that the channel status information for the UE is unknown and that the first RS resource is not assigned to any other UE; and assigning a second RS resource from a second RS group to the UE in response to determining that the channel status information for the UE is known.

Abstract: The present disclosure provides a method (100) in a network device. The method (100) includes: determining (110) a number, N, of sets of beam vectors by: creating a first set of beam vectors orthogonal to each other; and determining an n-th set of beam vectors each obtained by linear combination of two or more beam vectors from the (n?1)-th set of beam vectors, where N and n are integers and N?n>1. The method (100) further includes: selecting (120), from one or more of the N sets, a plurality of beam vectors for beamforming of a radio signal.

Abstract: A lens antenna and a lens antenna array are disclosed. A radio device and a method performed by the radio device are also disclosed. The lens antenna may include a lens, and two or more sets of antenna elements which are respectively disposed on two or more imaginary surfaces on a lateral side of the lens. The two or more imaginary surfaces may have different distances to a center point of the lens. The lens antenna array may include a plurality of lens antennas described above. The antenna elements in the plurality of lens antennas may be disposed on a same lateral side of the lenses in the plurality of lens antennas. A method for selecting antenna elements is performed by the radio device controlling the lens antenna or lens antenna array, when the lens antenna or lens antenna array operates as transmission or reception radio antennas.

Abstract: The present disclosure provides a method for a Base Station (BS) in a communication network is provided. The method includes: obtaining channel quality information sent from a User Equipment (UE), and in response to determining that the UE is in poor coverage according to the channel quality information, configuring the UE to perform downlink measurements on at least one downlink RLM measurement source in accordance with measurement configurations. The corresponding devices, computer readable storage medium, carrier, etc. thereof are also provided.

Abstract: Embodiments of the present disclosure provide method and apparatus for controlling training data. A method performed by a network device includes determining control information for training data. The method further includes transmitting the control information for training data to a wireless device. According to the control information, the transmitting and receiving of the training signals is carried out. The training data is used for air-interface machine learning.

Abstract: The present disclosure, a method performed by a Radio Unit, RU, is provided. The method includes: receiving, from a Digital Unit, DU, an instruction to receive a reference signal; receiving, from a terminal device, the reference signal in accordance with the instruction; and transmitting, to the DU, a positioning signal based on the received reference signal.

Abstract: Various embodiments of the present disclosure provide a method for beamforming. The method which may be at a network node and includes: obtaining channel information of a terminal device; determining a self-correlation factor of the terminal device according to the channel information; determining main lobe width according to a relationship between self-correlation factor and main lobe width; determining a weight vector on at least one transmitting antenna according to the determined main lobe width; and transmitting a message using the weight vector on the at least one transmitting antenna, to the terminal device.

Abstract: Embodiments of the present disclosure provide methods and apparatus for terminal device behavior classification. A method performed by a first network function comprises obtaining communication measurement data related to at least one terminal device. The method further comprises determining terminal implementation characteristics for a group of terminal devices based on the communication measurement data. The method further comprises sending the terminal implementation characteristics and/or a policy for the group of terminal devices to at least one second network function. The policy for the group of terminal devices is determined based on the terminal implementation characteristics.

Abstract: A method is implemented in a digital unit connected with a plurality of distributed antennas including a first antenna, a second antenna and a third antenna. The method comprises: causing transmitting a first signal from the first antenna, a second signal from the second antenna, and a third signal from the third antenna in a same frequency resource; obtaining a receiver and transmitter side loop-back phase difference between the first antenna and the second antenna based on the first signal received at the third antenna, the second signal received at the third antenna, the third signal received at the first antenna, and the third signal received at the second antenna; and obtaining estimations of a time delay difference and an initial phase difference between the first and second antennas based on the obtained loop-back phase difference.

Abstract: Various embodiments of the present disclosure provide a method for information sharing. The method which may be performed by a first network node comprises receiving a first measurement report from a terminal device. The terminal device may be capable of communicating with the first network node over a first connection. The method further comprises transmitting first measurement information based at least in part on the first measurement report to a second network node. The terminal device may be capable of communicating with the second network node over a second connection.

Abstract: Embodiments of the present disclosure provide methods and apparatus for managing load of a network node. A method performed at a first network node may comprise: determining (S101), by the first network node, whether to dispatch a task to another network node; transmitting (S102), by the first network node, to at least one network node including a second network node, a request of dispatching the task; receiving (S103), by the first network node, from the second network node, a response of accepting the task; transmitting (S104), by the first network node, to the second network node, at least one portion of the task; and receiving (S105), by the first network node, from the second network node, a result of executing the at least one portion of the task. According to embodiments herein, a network node may dispatch at least one portion of a task to another network node.