Telefonaktiebolaget Lm Ericsson (publ)

Lenovo (beijing) Limited

Ericsson Gmbh

Congchi Zhang

Zhang Zhang

Marco Belleschi

Mingzeng Dai

Lianhai Wu

Shehzad Ali Ashraf

Le Yan

Liang Hu

Haiming Wang

Antonino Orsino

Jose Angel Leon Calvo

Joachim Löhr

Ricardo Blasco Serrano

Hyung-Nam Choi

Muhammad Ali Kazmi

Prateek Basu Mallick

Haipeng Lei

Thorsten Lohmar

Santhan Thangarasa

Juying Gan

Anders E Eriksson

Hieu Do

Yunxi Li

Ajmal Muhammad

Zhang Fu

Massimo Condoluci

Maciej Muehleisen

Conny Larsson

Bastian Cellarius

Mohammed Yazid Lyazidi

Yibin Zhuo

Antonino Orsini

The present disclosure provides a method in a first terminal device. The method includes: receiving, from a second terminal device serving as a relay between the first terminal device and a network node, system information related to sidelink communication between the first terminal device and the second terminal device.

Terminal device, network node and methods therein for handling system information

Methods of operating a radio access network node and a core network node to link a remote user equipment, RMUE, device to a relay user equipment, RLUE, device in a communications network are described. The radio access network node operates to receive a message that includes information corresponding to either the RMUE device or the RLUE device having a connection that is established between the radio access network node and the corresponding one of the RMUE device or the RLUE device and that uses a first access and mobility management function, AMF. The radio access network node further operates to link the RMUE device to the RLUE device using the first AMF. The core network node operates to receive a message that a first AMF includes data corresponding to the RLUE device and links the RMUE device to the RLUE device based on the message.

Associating remote UE with relay UE in 5GC

The present application relates to a method and an apparatus for performing a handover procedure. One embodiment of the subject application provides a method, which includes: receiving a configuration signaling including first configuration information or second configuration information; determining a first target primary cell (PCell) based on the configuration signaling; and performing a handover procedure to the first target PCell.

Method and apparatus for performing handover procedure

Embodiments of the present disclosure relate to methods and apparatuses for multicast and broadcast services (MBS). According to an embodiment of the present disclosure, a method may include: determining whether a user equipment (UE) in an RRC_IDLE state or RRC_INACTIVE state should enter an RRC_CONNECTED state for reception of at least one MBS session; and transmitting indication information for indicating whether the UE should enter the RRC_CONNECTED state.

Methods and apparatuses for multicast and broadcast services

The present disclosure relates to a method and apparatus for transmission of control signals. The method is performed by a NodeB including a central unit (CU) and a distributed unit (DU). The method comprises transmitting a first channel indication and a first data unit from the CU to the DU, the DU transmitting the multicast and broadcast services (MBS) configuration to user equipment (UE) over a first channel indicated by the first channel indication, the DU receiving a first completion indication from the UE, and transmitting the first completion indication from the DU to the CU. The first data unit includes a MBS configuration.

Method and apparatus for transmission of control signals

The present invention relates to a method, wireless device and network node for supporting efficient, fast dynamic adaptation of radio links that allow for direct communication between wireless devices. It is desired to reduce signalling overhead and computations. The method at the wireless device comprises receiving configuration-information related to the other wireless device from the other wireless device or a node; determining a link-property of a first radio link of the multiple radio links based on the configuration-information; causing a modification of a second radio link of the multiple radio links based on the determined link-property.

Wireless device, network node and methods for efficient sidelink management

A method for performing random access includes: performing a 2-step RA procedure with a BS (S); receiving a fallback RAR from BS (S); performing a 4-step RA procedure with BS (S); and associating a 2-step RA information of the 2-step RA procedure with a 4-step RA information of the 4-step RA procedure (S).

Method and apparatus for performing random access

Embodiments of the present disclosure relate to wireless communication in an IAB network. According to some embodiments of the disclosure, a method may include: ciphering an uplink (UL) packet with a cipher configuration associated with a destination of the UL packet, wherein the UE is connected to a first integrated access and backhaul (IAB) donor and a second IAB donor via an IAB node, and the destination of the UL packet is either the first IAB donor or the second IAB donor; providing the ciphered UL packet with the destination of the UL packet; and transmitting the ciphered UL packet to the destination of the UL packet via the IAB node. By employing the solutions in the present disclosure, a UE can determine that the DL packet is from which IAB donor and thus can process the DL packet accordingly. Moreover, an IAB node can determine that the UL packet is to which IAB donor and can route the UL packet to the corresponding IAB donor.

Method and apparatus for wireless communication

Systems and methods are disclosed herein for exchanging Sidelink (SL) User Equipment (UE) context and configurations between a Master Node (MN) and a Secondary node (SN), e.g., in normal Multi-Radio Dual Connectivity (MR-DC) operations. In some embodiments, the SL UE context and configuration are exchanged between the MN and the SN via inter-node Radio Resource Control (RRC) messages. In this way, the two network nodes (the MN and the SN) are aware of the SL transmission going on under their coverage and can take the necessary actions to guarantee a stable and reliable SL connectivity.

Sidelink transmission continuity

Systems and methods are disclosed herein for sidelink measurement reporting. In one embodiment, a method performed by a wireless device for reporting sidelink measurements comprises obtaining a configuration of a plurality of threshold conditions for triggering an aperiodic sidelink measurement report and detecting one of the plurality of threshold conditions for triggering an aperiodic sidelink measurement report. The method further comprises, in response to detecting the one of the plurality of threshold conditions for triggering an aperiodic sidelink measurement report, sending an aperiodic sidelink measurement report. In this manner, more accurate path loss or channel busy ratio (CBR) estimation in sidelink communication is enabled, thereby improve sidelink power control performance, resource allocation performance, and hence the overall sidelink communication performance.

Sidelink measurements report

A D2D communication device sends a synchronization signal to enable synchronization of one or more other D2D communication devices. The D2D communication device provides the synchronization signal with an indication that the synchronization signal is derived from a D2D communication device configured as a synchronization master which, when not being synchronized to an external synchronization reference, has a higher priority to be used as a synchronization source than other D2D communication devices not synchronized to an external synchronization reference.

Priority management for D2D communication devices as synchronization source

Embodiments herein relate to a method performed by a UE () for handling communication in a wireless communication network. The UE () handles one or more data units based on a communication range requirement of one or more services, wherein the one or more data units are associated with the one or more services, by using a mapping of an indication of a communication range requirement and a radio resource for communication.

Method performed by a user equipment for handling communication in a wireless communication network

Embodiments described herein relate to methods and apparatus for communicating between devices using sidelinks. There is provided a method performed by a transmitting device for transmitting a packet to a destination device. The method comprises duplicating the packet and adding header information to form duplicated modified packets, each having a respective duplication identifier. Multiple wireless pathways to the destination device are determined, each wireless pathway comprising a sidelink. The duplicated modified packets are transmitted onto respective wireless pathways.

Packet duplication over multiple sidelinks

A method and apparatus for hybrid automatic retransmission request (HARQ) is provided. The method is performed by a first UE. The method includes receiving, from a NodeB, an acknowledge configuration indicating an HARQ scheme of the first UE and uplink resource for the HARQ scheme; determining whether an acknowledgement for a data block associated with a first downlink control information (DCI) is to be transmitted according to the HARQ scheme.

Method and apparatus for hybrid automatic retransmission request

A method is provided that includes selecting a resource within a resource selection window for an initial transmission of a first Medium Access Control protocol data unit (MAC PDU) of a plurality of periodic MAC PDUs to be transmitted by a first communication device (TX UE) over a device-to-device, D2D, link to a second communication device (RX UE). The method further includes selecting a period (P) for periodic transmission of the plurality of periodic MAC PDUs so that initial transmissions of all MAC PDUs of the plurality of periodic MAC PDUs other than the first MAC PDU occur in resources after the resource selection window. Communication devices (RX UE) and computer program products are also provided.

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Shanghai, China

Congchi Zhang