In a control apparatus, a channel selection control unit selects a “switching destination channel pair” from among a plurality of “switching destination channel pair candidates” in a plurality of radio channels. The “switching destination channel pair” is selected based on the degree of similarity between two BSSIDs of two radio channels constituting the currently-connected radio channel pair, and a plurality of degrees of similarity each of which is a degree of similarly between two BSSIDs of two radio channels constituting a respective one of the plurality of switching destination channel pair candidates. A channel switching control unit performs control so that radio units connect to the switching destination channel pair selected by the channel selection control unit.

A method for communication and related devices are provided in the disclosure. The method includes the following. A terminal device determines a failure of access to a target primary secondary cell (PSCell) or a radio link failure (RLF) after the target PSCell is accessed. The terminal device transmits a secondary cell group (SCG) failure report to a first network node, where the SCG failure report includes first indication information, and the first indication information indicates type information of PSCell addition/change.

A user equipment (UE) communicates in dual connectivity (DC) with a master node (MN) and a secondary node (SN) (2002). The UE determines that a radio connection with the MN has failed (2004); transmits, the SN, an indication of the failed radio connection, using radio resources of the SN (2006); detects, after the determining and before the radio connection is recovered, an uplink message for transmission to the MN (2008); and transmits, after the radio connection with the MN is recovered, the uplink message to the MN, using radio resources of the MN (2010).

A method of enabling multi-connectivity in a wireless network includes predicting at least one of a RLF, a call drop, and a jitter based on a plurality of Key Performance Indicators (KPIs) associated with the UE and the wireless network, determining whether the UE is in one of a Dual Connectivity (DC) mode and a carrier aggregation (CA) mode, performing one of: adding a new secondary gNodeB (gNB) in response to determining that the UE is not in both the DC mode and the CA mode and converting the new gNB to a master gNB, converting an existing secondary gNodeB to a master gNodeB with one of an existing Master Cell Group (MCG) gNodeB and another gNodeB as the secondary gNodeB, in response to determining that the UE is in the DC mode, and converting an existing secondary cell to a primary cell.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may configure a bandwidth part (BWP) switching configuration of a user equipment in connection with a dual active protocol stack (DAPS) handover based at least in part on a BWP switching rule; and perform the DAPS handover. Numerous other aspects are provided.

A radio terminal (1) determines that the radio terminal (1) is approaching a first station (5), receives from a center server (4) a cell identifier of a first cell corresponding to an entrance gate function (53) of the first station (5), and transmit a message containing the cell identifier to a cellular communication network. The message causes the network to add the first cell (54) as a secondary cell in dual connectivity for the radio terminal (1), enabling the radio terminal (1) to communicate with the entrance gate function (53) via a user plane path including a radio connection of the first cell (54). The radio terminal (1) then communicates with the entrance gate function (53) via the user plane path. This contributes, for example, to reducing latency required to transmit or receive user data in a narrow coverage cell when a radio terminal receives a signal from that cell.

The described technology is generally directed towards intelligent dual-connectivity for non-standalone network nodes. Network nodes can report state information to a central controller, such as a radio access network intelligent controller. The controller can determine, based on the state information reported by multiple network nodes, network nodes to cooperate in non-standalone mode. The controller can provide the network nodes with instructions to implement the controller's non-standalone relationship determinations.

A method of coordinating a plurality of radio access networks (RANs) includes aggregating, with a gateway, communications interfaces between a plurality of RANs and a packet core network through the gateway. A plurality of radio nodes (RNs) in each of the RANs is communicatively coupled to the gateway and to user equipment (UE) devices associated with the RNs in each of the RANs. The gateway also controls and coordinates mobility of the UE devices within and among the RANs. In addition, the gateway acts as a virtual enhanced NodeB (eNB) to the packet core network, thereby hiding the aggregated communications interfaces from the packet core network.

A method includes monitoring for a radio link failure associated with a secondary cell of a secondary base station. This may be a PScell. A user device may select a second secondary cell as a target secondary cell. The user device initiates a relocation procedure with the target secondary cell.

Embodiments include methods for a target node to establish a connection with a user equipment (UE) operating in dual connectivity (DC) with a PCell utilizing a first radio access technology (RAT) and with a PSCell utilizing a second RAT. Embodiments include receiving, from the UE, a re-establishment request message comprising parameters associated with the PSCell, a first message authentication code (MAC), and an indication of the UE's selection of a target cell served by the target node as a replacement for the PCell. The target cell utilizes the second RAT. Embodiments include verifying the message integrity based on the first MAC, and determining a full UE context based on the plurality of parameters associated with the PSCell and on a successful verification of the message integrity. Embodiments include establishing a connection with the UE based on the full UE context, whereby the target cell serves as a PCell for DC.