A communication device may, in response to a wireless link via the first wireless interface being established with a terminal device while the communication device is a parent station state, receive a predetermined signal from the terminal device via the second wireless interface, if the predetermined signal is received from the terminal device, shift the communication device from the parent station state to a specific state where the communication device does not operate as a parent station, wherein the communication device is maintained in the parent station state if the predetermined signal is not received from the terminal device even if the wireless link via the first wireless interface has been established with the terminal device and establish a first wireless connection via the second wireless interface with the terminal device so as to participate in a second wireless network as a child station.

A communication terminal is described comprising a first transceiver configured for communication according to a first radio access technology and a second transceiver configured for communication according to a second radio access technology. The second transceiver is configured to determine whether a frequency range is occupied by a transmission according to the second radio access technology and to notify the first transceiver whether the frequency range is occupied by a transmission according to the second radio access technology. The first transceiver is configured to receive signals transmitted in the frequency range based on the notification from the second transceiver.

Aspects of the subject disclosure may include, for example, providing radio access information to a first server of an IP multimedia subsystem network to cause the first server to establish an interface between the first server and a second server for providing the radio access information to the second server, where the interface does not utilize an S14 interface, and where the providing of the radio access information to the second server causes the second server to discover access networks in proximity to the communication device and to manage connections to the access networks. Other embodiments are disclosed.

In a first aspect, a communication control method is used in a cellular communication system. The communication control method includes, by a relay node, including additional information in a failure occurrence notification indicating occurrence of a failure in a first backhaul link between a first parent node and the relay node, and transmitting the additional information to a child node. The communication control method includes receiving, by the child node, the failure occurrence notification including the additional information. Here, the additional information includes a first BAP routing ID unavailable due to the failure and/or a first destination BAP address included in the first BAP routing ID, and includes identification information indicating that the additional information includes the BAP routing ID and/or the first destination BAP address.

A method and an apparatus for receiving a common public radio interface (CPRI) data stream, a method and an apparatus for receiving an Ethernet frame, and a system, where a first network apparatus receives a first CPRI data stream using a CPRI of the first network apparatus, where the first network apparatus generates a segment of the first CPRI data stream according to the first CPRI data stream, the first network apparatus generates an Ethernet frame, where the Ethernet frame includes the segment of the first CPRI data stream and a CPRI data identifier, and the CPRI data identifier indicates that the Ethernet frame carries CPRI data, and the first network apparatus sends the Ethernet frame to a second network apparatus using an Ethernet interface of the first network apparatus.

The invention concerns transmission interfaces steering mechanisms in order to improve the transmission of data between communication devices embedding a plurality of transmission interfaces. Known band steering mechanisms do not provide an efficient traffic load balancing between the two frequency bands which leaves part of the wireless communication capacities unused. To overcome these drawbacks, it is proposed to determine, among a plurality of transmission interfaces embedded in a communication device, which transmission interface to be used for transmitting the data to another communication device. Such a method enables traffic-load balancing between a plurality of transmission interfaces embedded in the communication devices. Such a method enables a communication device to transmit data packets simultaneously on a plurality of transmission interfaces to one or more communication devices.

Aspects of the subject disclosure may include, for example, providing radio access information to a first server of an IP multimedia subsystem network to cause the first server to establish an interface between the first server and a second server for providing the radio access information to the second server, where the interface does not utilize an S14 interface, and where the providing of the radio access information to the second server causes the second server to discover access networks in proximity to the communication device and to manage connections to the access networks. Other embodiments are disclosed.

A communication system includes an outdoor gateway and an indoor gateway. The outdoor gateway includes: a communication IF that connects to an outdoor network; and a communication IF that communicates wirelessly. The indoor gateway includes: a communication IF that connects to an indoor network; and a communication IF that connects, via wireless communication, to the communication IF included in the outdoor gateway.

Methods, systems, and devices for wireless communications are described. An access and mobility management function (AMF) proxy may establish a first communication link between the AMF proxy and a first radio access network (RAN) associated with a first network operator, a second communication link between the AMF proxy and a first AMF associated with the first network operator, and a third communication link between the AMF proxy and a second AMF associated with a second network operator. The AMF proxy may the receive a message from the first RAN that includes a source identifier (ID) associated with a network entity of the first RAN and a target AMF ID. Following, the AMF proxy may transmit the message to the first AMF or transmit the message to the second AMF, based on the target AMF ID corresponding to the first AMF or the target AMF ID corresponding to the second AMF.

The present specification relates to a method for efficiently managing a D2D sidelink process using D2D data priority. The method, which is performed by a D2D receiving device, comprising: from a D2D transmitting device, receiving, through a sidelink physical channel, scheduling assignment (SA) including information regarding transmission of D2D data; receiving, from the D2D transmitting device, the D2D data on the basis of the received scheduling assignment (SA); and performing a sidelink process with respect to the received D2D data.