Mobile broadband traffic has been exploding in wireless networks (300) resulting in an increase of interferences and reduced operator control. Networks (300) are also becoming more heterogeneous putting additional demand in interference management. There is currently no support for signalling of neighbor cell interference gleaned from soft and softer handover powers. Thus, there are no algorithms that accounts for and/or estimates interference impact factors between neighboring cells based on neighbor cell interference estimates gleaned from soft and softer handover power. To address these and other issues, techniques to accurately predict/estimate neighbor cell interferences that accurately accounts for own cell powers, soft handovers, softer handovers, neighbor cell interferences, and remaining neighbor cell interferences are presented. The described techniques estimate coupling effects of scheduling decisions in one cell to surrounding cells. In this way, interferences in the network (300) can be managed. To allow sharing of impact factors between network nodes (500), signalling techniques are also presented.

The present disclosure relates to a communication technique which combines a 5G communication system, for supporting a higher data transmission rate than 4G systems, with IoT technology, and a system for same. The present invention may be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, smart retailers, security and safety-related services, or the like) based on 5G communication technology and IoT-related technology. The present disclosure relates to a method and device for performing an efficient handover, without the suspension of data transmission and reception, upon handover in a next generation mobile communication system.

An electronic device includes a communication circuit configured to support cellular communication through a terrestrial network and a non-terrestrial network and at least one communication processor, comprising processing circuitry, wherein at least one communication processor, individually and/or collectively, is configured to: determine, based on a frequency of a terrestrial network having a previous connection history before a connection to the non-terrestrial network and/or frequency information of a pre-stored terrestrial network, a frequency of the terrestrial network to be found, perform a search for the terrestrial network in a section in which data is not received, based on a location of the electronic device, and determine whether to release a connection with the non-terrestrial network and make the connection to the terrestrial network according to whether a specified condition is satisfied based on the terrestrial network being found.

A method, apparatus and computer program product are provided herein to provide service continuity between a Stand-alone Non-Public Network (SNPN) and a Public Land Mobile Network (PLMN). For example, a method is provided that comprises after determining that the user equipment (UE) with the first protocol data unit (PDU) session established in the first SNPN is or will be leaving the coverage area of the first SNPN, causing a request message to be transmitted to the UE, wherein the request message comprises a request to initiate a second PDU session establishment procedure towards a PLMN. The method also includes causing the UE to establish the second PDU session with an internet protocol anchor function of a user plane function in the PLMN via the first SNPN radio access network (RAN) or via the PLMN RAN, wherein the second PDU session is established prior to release of the first PDU session.

A method performed by a User Equipment, UE, to perform handover from a source access node to a target access node is provided. The UE, the source access node and 5 the target access node are operating in a wireless communications network. The UE receives (601) a handover command message from the source access node. The UE establishes (602) a target radio connection with the target access node, and determines (603) whether or not a source cell release criterion is fulfilled. When the source cell release criterion is determined to be fulfilled, the UE releases (604) a source radio 10 connection with the source access node.

Embodiments of this application relate to the field of communications technologies, and in particular, to a communication method and a communications apparatus. The solution includes: sending, by a source access network device, a first data packet of a terminal to a target access network device; and when the source access network device determines that the target access network device has received the first data packet, sending, by the source access network device, a first message to the terminal, where the first message is used to indicate the terminal to hand over to the target access network device.

Techniques to achieve near zero millisecond mobility of wireless terminals are described. In one example method, a wireless terminal receives a radio resource control message from a source node. The message indicates the use of a simultaneous connectivity mobility of the wireless terminal during a mobility procedure from the source node to a target node. The wireless terminal performs the mobility procedure based on the control message.

Methods and apparatus which allow a wireless terminal (302) to simultaneously maintain connections with multiple base stations (304, 306) are described. Each wireless terminal (302) is capable of supporting multiple separate timing and/or other control loops one, for each base station connection thereby allowing the connections to operate independently and in parallel. Different control signals and/or data are transmitted on each connection that is established with a base station (302, 306). In this manner base stations (302, 306) receive different data allowing for asynchronous data transmission. The data received by the base stations (302, 306) can be supplied to a wired asynchronous network (308) without the need to combine the received data prior to supplying it to the wired network (308). The communications techniques of the invention can be used to implement soft handoffs without the need to duplicate data transmissions to multiple base stations.

Systems, methods, apparatuses, and computer program products for reducing handover interruption time using sidelink communication are provided. For example, the handed-over (remote) user equipment may exchange uplink and downlink data with the target cell via the additional or assisting link to another relay user equipment while the remote user equipment performs the random access procedure (random access channel procedure) and may establish its own direct radio link to the target cell.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a terminal in a mobile communication system is provided according to one embodiment of the present disclosure. The method comprises the steps of: transmitting a first message, comprising network function information of the terminal, to a mobility management entity associated with a first network; if the network function information instructs support for a second network, receiving a second message comprising connection reactivation request information from the mobility management entity; releasing the connection with respect to the first network in response to the second message; transmitting a third message, for reestablishing connection to the first network, to the mobility management entity on the basis of the connection reactivation request information. The third message comprises an identifier of a first session for the second network corresponding to the connection with respect to the first network allocated by the terminal.