Abstract: Method, apparatus and computer program product able to determining whether a user equipment in a wireless communications network has applied a stored or acquired system information message of a new system information area within a predefined time, where the user equipment replaced a system information message of an initial system information area with a system information message of another system information area or with a cell-specific system information message of another cell. If the new system information area is equivalent to the system information area of the initial system information area, then the system information message for the initial system information area is applied. If the new system information area is different from the system information area of the initial system information area, then a system information message for that different system information area is applied.

Abstract: Systems, methods, apparatuses, and computer program products for managing neighbor relations and coordinating physical cell identifier (PCIs), for example, for moving high altitude platform systems are provided.

Abstract: An apparatus has means for causing a random access message to be transmitted from a communications device to a target cell while the communications device is connected to a source cell and for receiving from the source cell information indicating that the random access message has been received by the target cell.

Abstract: In accordance with some embodiments, a method may include transmitting, by a source network entity, at least one handover prepare request comprising at least one extension indication to a target network entity. The method may further include receiving, by the source network entity, in response to the at least one handover prepare request, at least one handover request response from the target network entity. The method may further include transmitting, by the source network entity, at least one handover command acknowledgement to at least one user equipment based upon the at least one handover request response.

Abstract: It is provided a method, comprising monitoring if a first cell receives one or more scheduling mode indications including a first scheduling mode indication for at least one of a downlink transmission of the first cell and an uplink transmission to the first cell, wherein the first scheduling mode indication comprises forbidding to schedule a respective resource for the at least one of the downlink transmission and the uplink transmission; and the method further comprises forbidding, for the first scheduling mode indication, a scheduler of the first cell to schedule the respective resource for the at least one of the downlink transmission and the uplink transmission if the one or more scheduling mode indications are received.

Abstract: In accordance with an example embodiment of the present invention, a method comprising: receiving, by a user equipment, instructions based on a determination that a communication sent from the user equipment to at least one network comprising signaling to at least one network node over continuous time slots of at least one uplink connection would cause a problem with the communication; and based on the instructions, preventing by the user equipment the signaling over at least one particular time slot of the at least one uplink connection to overcome the problem, wherein the instructions are received in a recurring pattern indicating the at least one particular time slot.

Abstract: A source network apparatus (10) which provides access for a user equipment (30) to a communication network transmits (S102) a handover command to the user equipment (30), the handover command indicating a target network apparatus (20) for providing access for the user equipment (30) to the communication network, and a detach condition on when the user equipment (30) is to detach from the source network apparatus (10) after having accessed the target network apparatus (20) (S204) and received user plane data packets from the target network apparatus (20) (S205), wherein the source network apparatus (10) continues exchanging user plane data packets with the user equipment (30) (S101, S103) until the user equipment (30) detaches (S306) from the source network apparatus (10).

Abstract: The present invention provides a multi-connectivity establishment method, communication system, user equipment (UE) and access point (AP), the method comprising: a UE setting up a first RRC connection with a CN node via a first AP; the UE, when the first AP transmits to the UE a notification that RAN anchoring function is supported by the first AP and the UE determines to use a second AP to set up a second RRC connection, transmitting a second connection request message to the second AP, wherein, the second connection request message including identifying information of the first AP; and the second AP, according to the second connection request message, transmitting an anchoring request message to the first AP so as to obtain UE context information, and setting up the second RRC connection with the UE according to the UE context information.

Abstract: A technique of performing a HO includes the source BS sending a HO resume message to the UE at the conclusion of a RACH access procedure that occurs in response to a HO command while a second TRX of the UE continues to exchange data packets with the source BS as if no HO command were issued. By continuing to exchange data with the source BS as if there were no HO command until the HO resume message reintroduces a RACH-less HO procedure, the interruption may be reduced to about 4 msec. At any point in time the UE handles only one protocol stack and only one security, which avoids the complexity of the advanced prior art methods.

Abstract: An apparatus and a method are described by which, upon preparing a handover of a terminal device in a source cell, mobility information and at least one connected slice network slice identifier identifying at least one network slice used by the terminal device is added to a terminal device history of the terminal device, and the terminal device history is sent to a target cell for the handover.

Abstract: Systems, methods, apparatuses, and computer program products for managing neighbor relations and coordinating physical cell identifier (PCIs), for example, for moving high altitude platform systems are provided.

Abstract: An exemplary embodiment provides an apparatus comprising at least one processor and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause said apparatus to determine that a path switch can be initiated during a handover of a user equipment from a first access node to a second access node, determine at least one condition for initiating the path switch, postpone the initiation of the path switch until the at least one condition has been met, and in response to determining that the at least one condition has been met, indicate the initiation of the path switch to the first access node or the second access node.

Abstract: An apparatus for use by a first communication network control element configured to control a communication connection of at least one communication element in a first network area providing a specific communication capability, the apparatus including processing circuitry, and memory for storing instructions to be executed by the processing circuitry, wherein the memory and the instructions are configured to, with the processing circuitry, cause the apparatus at least: to determine that a communication element communicating in the first network area and using the specific communication capability enters a second network area which does not provide the specific communication capability and that there is a switching of the communication connection to the second network area, and to cause sending of connection switching information related to the switching of the communication connection of the communication element to a second communication network control element.

Abstract: Methods and apparatus, including computer program products, are provided for conditional handovers. In some example embodiments, there may be provided a method including sending, by a first node serving a user equipment, a message to a second node, the message including an indication of whether a conditional cell change is prohibited at the second node; and receiving, by the first node, an acknowledgment in response to the message.

Abstract: A method may include receiving a request for conditional handover from a source node. The method may also include sending a conditional handover request acknowledgment message in response to the request. The method may further include sending a conditional handover cancellation message to a source node. The conditional cancellation message may include a genuine cancellation or a modification-related cancellation. Further, the method may include receiving a response message from the source node in response to the conditional handover cancellation message. In addition, the method may include deciding to keep or release user equipment context based on the response message.

Abstract: A PCell for a UE participates in a first phase to add a PSCell to a set of cells including the PCell to be used by the UE for a MCHO, comprising determining that the UE is to participate in the MCHO, and sending indications of at least resources for selected ones of multiple candidate cells toward the UE for use for the MCHO. The PCell participates in a second phase to add the PSCell to the set, comprising determining by the PCell which of the selected multiple cells has been accessed by the UE as the PSCell. The PCell participates in a swap from being the PSCell for the UE to becoming a current PSCell for the UE, wherein the PSCell is swapped from the PSCell to being a current PCell for the UE. The current PSCell participates in a release of a connection to the UE.

Abstract: Systems, methods, apparatuses, and computer program products for configuring Channel State Information-Reference Signal (CSI-RS) resources of neighboring cells for inter-cell mobility are provided. One method may include providing, by a network node, at least one reporting configuration to one or more user equipment. The reporting configuration is based on at least one of channel state information reference signals (CSI-RS) or synchronization signal/physical broadcast channel (SS/PBCH) blocks. The method may also include receiving at least one measurement report comprising measurement results when and as specified by the at least one reporting configuration.

Abstract: The present invention provides a connection setup method, the corresponding user equipment, common central control node and communication system. A connection setup method performed by a user device, comprising: acquiring information transmitted by a plurality of cells; determining a plurality of candidate cells according to the information transmitted by the plurality of cells, sending a common connection setup request for the plurality of candidate cells to a common central control node, the common central control node corresponding to each of the plurality of candidate cells; receiving a common connection setup message for a plurality of connecting cells transmitted by the common central control node, the plurality of connecting cells being determined from the plurality of candidate cells by the common central control node, so that the user equipment establishes multiple radio connections through each of the plurality of connecting cells.

Abstract: Various communication systems may benefit from improved handover. For example, it may be helpful to manage a list candidate cells to which a user equipment may be handed over. A method may include receiving at a user equipment a list of prepared candidate cells from a source cell. The method may also include transmitting the list of prepared candidate cells from the user equipment to a target cell after or during handover from the source cell to the target cell.

Abstract: An apparatus suitable for at least to: receive, from a serving access node, a random access update precondition and a configuration with regard to a conditional handover, wherein the configuration indicates at least one handover candidate cell; carry out measurements according to the configuration, and if the random access update precondition is fulfilled, transmit a message to the serving access node, the message comprising information obtained by the measurements and indicating at least one beam of at least one handover candidate cell and/or at least one handover candidate cell that caused the random access update precondition being fulfilled for obtaining a random access resource configuration for carrying out the conditional handover.