A method for providing for network function (NF) fallback to a recovered network function NF repository function (NRF) includes, at an NF including at least one processor, generating an NF register message including an indication to notify the NF of recovery of a first NRF after a failure of the first NRF. The method further includes transmitting the NF register message to the first NRF. The method further includes communicating with the first NRF and detecting failure of the first NRF. The method further includes, in response to detecting failure of the first NRF, initiating communications with a second NRF that is a geo-redundant mate of the first NRF. The method further includes receiving notification of recovery of the first NRF and falling back to communicating with the first NRF.

A method for providing for network function (NF) fallback to a recovered network function NF repository function (NRF) includes, at an NF including at least one processor, generating an NF register message including an indication to notify the NF of recovery of a first NRF after a failure of the first NRF. The method further includes transmitting the NF register message to the first NRF. The method further includes communicating with the first NRF and detecting failure of the first NRF. The method further includes, in response to detecting failure of the first NRF, initiating communications with a second NRF that is a geo-redundant mate of the first NRF. The method further includes receiving notification of recovery of the first NRF and falling back to communicating with the first NRF.

An apparatus and method for providing handover support information in a mobile communication system are provided. A method for an Base Station (BS) to provide information necessary for measurement report trigger performance to a Mobile Station (MS) after the MS determines neighboring BSs in a mobile communication system includes, in a case where the MS is an active mode MS, providing a Time To Trigger (TTT) independently by a specific neighboring BS to the active mode MS and, in a case where the MS is an idle mode MS, providing a reselection time period (Treselection) independently by the specific neighboring BS to the idle mode MS.

The embodiments of the invention disclose a data transmission method comprising: a base station receives terminal information transmitted by terminal equipment; the base station determines, according to the terminal information, that the terminal equipment is able to communicate with the base station via a first relay node; and the base station transmits to the terminal equipment a first notification message to, instruct the terminal equipment to communicate with the base station via the first relay node. In the embodiment of the invention, the base station can instruct the terminal equipment to switch from a cellular link to a sidelink passing through the first relay node, thereby ensuring communication quality between the terminal equipment and the base station.

A communication system comprising at least one radio station which includes a main radio unit and at least one associated standby radio unit and comprising a user console connected via a communication network to the main radio unit of the radio station addressed by a network address of the communication network, wherein the main radio unit and its associated standby radio units are configured to be operated in parallel and to exchange operational parameters during operation of said communication system, wherein an operation failure of the main radio unit of a radio station triggers an automatic handover of the used network address from the main radio unit of the radio station to an associated standby radio unit of said radio station to maintain an uninterrupted communication between the user console and the respective radio station of said communication system.

A device and a method for reducing power consumption of an electronic device is provided. The electronic device includes a display device, a battery, and at least one processor configured to be operatively connected to the display device, wherein the processor may determine whether to perform a handover to a second communication network, based on whether the display device is activated and a data throughput, in a state of connection to a first communication network among a plurality of communication networks supportable by the electronic device, and perform a handover to the second communication network when it is determined to perform the handover to the second communication network.

A device and a method for reducing power consumption of an electronic device is provided. The electronic device includes a display device, a battery, and at least one processor configured to be operatively connected to the display device, wherein the processor may determine whether to perform a handover to a second communication network, based on whether the display device is activated and a data throughput, in a state of connection to a first communication network among a plurality of communication networks supportable by the electronic device, and perform a handover to the second communication network when it is determined to perform the handover to the second communication network.

The embodiments of present application provide a method and device for handover, wherein, the method includes: receiving a configuration message transmitted by a second node to support the first node for handover, wherein, the first node includes any one of a relay node, a mobile terminal part of the relay node, and a distributed unit of the relay node, and the second node includes any one of an anchor node, and a central unit of the anchor node; and configuring the first node according to the configuration message transmitted by the second node. The method provided in the present application achieves the effect of updating the configuration of the first node during the handover of the first node when moving, so that the relay node may continuously provide service for a user equipment accessing the first node.

Embodiments provide a core network selection method, an apparatus, and a system. The method includes the following steps: obtaining first dedicated core network (DCN) information from an access network device, where the first DCN information includes information about at least one DCN that can be accessed by the access network device. The method also includes selecting a to-be-accessed DCN from the at least one DCN according to the first DCN information, and sending information about the to-be-accessed DCN to the access network device, so that the access network device determines a core network device according to the information about the to-be-accessed DCN.

Provided is a communication device that favorably implements SR communication and MU communication. A communication device that operates as a base station includes a determination unit that determines a communication status in a BSS of the communication device, and a control unit that controls transmission and reception of a signal regarding connection change of a terminal according to the communication status to and from a surrounding base station. The determination unit determines the presence of a small number of terminals falling outside a distribution of implementation statuses of spatial reuse communication or multi user communication of entire subordinate terminals, and transmits a signal requesting the small number of terminals to be connected to the surrounding base station or transmits a signal inquiring of the surrounding base station acceptance of the small number of terminals.