Embodiments of the present disclosure provide a method for accessing an inter-RAT cell and a related device, and the method includes: sending, by a base station, a first message to a terminal, where the first message is used to instruct the terminal to access an inter-RAT cell, and an LTE cell and the inter-RAT cell are different cells. Beneficial effects are as follows: The first message is sent to the terminal, so that the terminal directly accesses the inter-RAT cell without a need to access the base station. In this way, the terminal does not need to perform a handover procedure, thereby reducing a delay in an access process, effectively ensuring that the terminal can successfully access the inter-RAT cell, and effectively ensuring that a radio access technology new RAT service can be performed between the terminal and a base station of the inter-RAT cell.

A system, method and computer-readable medium for concurrent support of Voice Call Continuity (VCC) capabilities in both the enterprise space and the carrier space are provided. The enterprise VCC functionality is used when the user is located in the enterprise domain which does not impact the carrier's network while the carrier VCC capability is used when the user is located in the carrier domain to support seamless handover between the wireless networks that the carrier may offer. The carrier VCC anchoring point and the enterprise VCC anchoring point may communicate with each other to confirm and inform the other anchoring point that a call handover is occurring or will occur.

The present disclosure relates to methods and apparatus for flexible, security context management during AMF changes. One aspect of the disclosure is a mechanism for achieving backward security during AMF changes. Instead of passing the current NAS key to the target AMF, the source AMF derives a new NAS key, provides the new NAS key to the target AMF, and sends a key change indication to the UE, either directly or through some other network node. The UE can then derive the new NAS key from the old NAS key. In some embodiments, the AMF may provide a key generation parameter to the UE to use in deriving the new NAS key. In other embodiments, the target AMF may change one or more security algorithms.

Disclosed in embodiments of the present disclosure are a network handover method, apparatus and system. The method includes: a first network element instructing a source base station connected to a user equipment (UE) to initiate a handover during establishment of traffic for the UE; and a second network element initiating bearer establishment or Quality of Service (QoS) flow establishment after the UE has been handed over from a first access network to a second access network. With the embodiments of the present disclosure, a technical problem of an over-complicated handover between networks in the related art is solved.

Systems and methods are described for call management. A method may comprise determining at least a portion of a network topology. A handoff parameter may be determined based on one or more of network telemetry information or reliability information associated with the network topology. A handoff may be caused, based on at least the handoff parameter, between a first network device and a second network device associated with the network topology.

A dynamic spectrum arbitrage (DSA) system includes a dynamic spectrum policy controller (DPC) and a dynamic spectrum controller (DSC) that together dynamically manage the allocation and use of resources across different networks. The DSC component may be configured to receive notice that an eNodeB is congested, identify a geographic boundary area for a bid serviced by the congested eNodeB, generate a list of eligible active wireless devices that are inside the geographic boundary area, determine an available resource of target a eNodeB that services the identified geographic boundary area, select for handin to the target eNodeB wireless devices from the received list of eligible active devices, and send a handin initiate communication message to the target eNodeB servicing the wireless devices that are selected for handin.

According to the present disclosure, a mobility management method, an access network device, and a terminal device are disclosed. A base station system includes a centralized unit and a distributed unit, the centralized unit communicates with the distributed unit, and the distributed unit communicates with a terminal device through an air interface. An example method includes: selecting, by the centralized unit, a target cell as a secondary cell based on a measurement report reported by the terminal device, and sending configuration information of the target cell to the terminal device through the distributed unit; and receiving, by the centralized unit, primary cell change indication information sent by the distributed unit, performing air interface resource reconfiguration for the target cell based on the primary cell change indication information, generating reconfiguration information, and sending, by the centralized unit, the reconfiguration information to the terminal device through the distributed unit.

A base station according to an embodiment constitutes a mobile communication network. The base station comprises: a controller configured to perform at least either one of load distribution controls of a first control in which a parameter is set to a value by which switching from the mobile communication network to a wireless LAN is performed easier than a predetermined value or a second control in which a predetermined radio terminal, out of radio terminals subordinate to the base station, is allowed to perform handover; and a transmitter configured to transmit status information indicating whether or not the base station is performing the load distribution control, to a neighboring base station. The parameter is used for determining whether or not the radio terminal subordinate to the base station switches a standby target or a connection target between the mobile communication network and the wireless LAN.

A method for handling NR capabilities comprises the first BS transmitting at least one E-UTRA capability and at least one first NR capability of a communication device to the second BS; the second BS generating a RRC Connection Reconfiguration message according to the at least one E-UTRA capability and the at least one first NR capability, wherein the RRC Connection Reconfiguration message comprises at least one E-UTRA configuration and a NR configuration; the second BS transmitting the RRC Connection Reconfiguration message to the first BS; the first BS generating a first NR-access RRC message comprising the RRC Connection Reconfiguration message; the first BS transmitting the first NR-access RRC message to the communication device; and the second BS receiving a RRC Connection Reconfiguration Complete message from the communication device.

An apparatus (10) used in a Self-Organizing Network (SON) includes a SON execution unit (101) and an exclusion processing unit (105). The SON execution unit (101) executes a SON operation on a first cell (40), a second cell (41) or a neighboring cell pair (40 and 41), the SON operation including repeatedly adjusting a configuration parameter that affects an operation of a base station (20) or a mobile station (30) to achieve an optimization objective. The exclusion processing unit (105) excludes the first cell (40), the second cell (41) or the neighboring cell pair (40 and 41) from a future SON operation by the SON execution unit (101), if achievement status of the optimization objective after completion of the SON operation by the SON execution unit (101) does not satisfy a predetermined reference level. This can contribute to suppression of execution of SON operation providing only little performance improvement.