Systems and methods for maintaining a user session during an access network handover are provided. The method can include establishing, between a user equipment and an access network, a first connection over a first access network, and a second connection over a second access network such that the first and second connections exist concurrently. The method can include setting the first connection as an active connection for conveying data packets for stateful user session, and setting the second connection as a standby connection. The method can include exchanging a series of handover messages between the user equipment and the access gateway. The method can include transitioning the active connection to the second connection, and setting the first connection to the standby connection. The method can include continuing, over the second connection, the stateful user session such that a state of the stateful user session is maintained through the transition.

A method and system for wireless communication with a mobile router in a moving vehicle, such as a train, and an external wireless network is disclosed. The external network includes a plurality of trackside base stations distributed along a path of travel. The method includes: determining the presence of a mobile router within the access area of a trackside base station, and when the presence of a mobile router has been determined: setting the power of the trackside base station to a high power mode; determining a direction of travel of the vehicle; setting the power of at least one trackside base station arranged in the forward direction of the base station for which the mobile router has been detected to a high power mode; and setting the power of at least one trackside base station arranged in the backward direction of the base station to a low power mode.

A method and user equipment (UE) for recovering a service in a wireless network is provided. The method includes detecting, in a UE, that a fast cell update criteria is met, and recovering, in the UE, the service in the wireless network by performing a cell update procedure.

A user communications device having active and idle states operates in a cellular communications network in which user communications devices communicate via network communications devices of cells of the network. History data identifying the cells in which the user communications device has been present whilst in the idle state is maintained. This history data is used by the user communications device or by a network communications device to enable adjustment of cell selection/reselection parameters for the user communications device in the active state.

Techniques presented herein may provide Distributed Unit (DU) failover techniques for a virtualized Radio Access Network (vRAN) architecture. In one example, a method may include maintaining, by a management node for a vRAN, service information for a plurality of distributed unit components for the vRAN in which the service information identifies, at least in part, service characteristics and failover rules for the vRAN. The method may further include determining a failure of a particular DU component of the plurality of DU components; and reassigning one or more particular RUs currently assigned to the particular DU component to one or more other DU components based on the service characteristics maintained in the service information and particular failover rules identified in the service information that are associated with each of the one or more particular RUs that are re-assigned.

A wireless communication method includes: transmitting, by a base station, a signal subjected to reduction of transmission power that is reduced compared with specific transmission power of the base station; and giving notice of, by a wireless terminal, when the wireless terminal detects a signal of the base station, a reduction cancellation request to the base station based on information relating to the reduction of the transmission power of the base station and a reception level of the signal of the base station, the reduction cancellation request being used for cancelling the reduction of the transmission power in the base station.

Disclosed are a network optimization method, device and system for a radio link failure (RLF), the method comprising: if a local base station determines, after receiving an RLF report transmitted by a UE, that the RLF report is a link failure related to bearer separation, then transmitting the RLF report to a macro eNB; the macro eNB determines the cause of the link failure according to the RLF report and a bearer separation and recovery process, such that the macro eNB involved in the cause of the link failure conducts parameter adjustment, thus achieving self-configuration and self-optimization according to the RLF report reported by the UE when setting the parameter related to bearer separation.

A method, system and device load balancing in a telecommunications network is provided where the selection of the one or more User Equipment (UE) 150, to be relocated from a source cell 112 to a target cell 122, is based on a prediction value of the performance in the target cell. The prediction of the performance in the target cell is performed by mapping the current load of the target cell and a current detected signal of the target cell, into a perceived performance, perceived by UEs that have been relocated previously. After relocation of the UE the perceived performance in the target cell is measured actually and fed back 312 by the target cell RBS 120 to the source cell RBS 110, and used for updating the predicted performance value.

A method for controlling a UE situated in both a coverage area of a first base station and a coverage area of a second base station involves detecting that the UE is ping-ponging between being served by the first base station and being served by the second base station and determining that the second base station is a relay base station. Further, the method involves, responsive to detecting the ping-ponging and determining that the second base station is a relay base station, (a) determining a carrier on which the first base station provides service and on which the second base station does not provide service, and (b) based on the first base station providing service on the determined carrier and the second base station not providing service on the determined carrier, causing the UE to be served by the first base station on the determined carrier.

A base station according to an embodiment comprises: a receiver configured to receive resource information indicating a usage status of radio resources of a node to which an energy saving mode in which consumed power is reduced by stopping a use of at least a part of radio resources is applied. The resource information includes identification information for identifying whether or not the usage status indicated by the resource information is a usage status of radio resources available when the energy saving mode is applied.