A method for selecting at least one gateway in a set of gateways for relaying data received from a server and intended for each endpoint in a group of endpoints, each endpoint in group communicating with the server via at least one gateway in the set of gateways, the group of endpoints and the set of gateways forming a LoRa network, each gateway receiving data intended for at least one endpoint retransmitting data to each endpoint for which data are intended in a frame in accordance with the LoRaWAN protocol. The method includes: selecting a subset of gateways of the set of gateways enabling the server to communicate with each endpoint group of minimum size, the selected subset minimising a risk of the data sent by the server and relayed by each gateway of subset being lost because of collisions between frames relaying data sent by the gateways of subset.

A method for selecting at least one gateway in a set of gateways for relaying data received from a server and intended for each endpoint in a group of endpoints, each endpoint in group communicating with the server via at least one gateway in the set of gateways, the group of endpoints and the set of gateways forming a LoRa network, each gateway receiving data intended for at least one endpoint retransmitting data to each endpoint for which data are intended in a frame in accordance with the LoRaWAN protocol. The method includes: selecting a subset of gateways of the set of gateways enabling the server to communicate with each endpoint group of minimum size, the selected subset minimising a risk of the data sent by the server and relayed by each gateway of subset being lost because of collisions between frames relaying data sent by the gateways of subset.

Diversity receiver front end system with flexible antenna routing. A receiving system can include a plurality of amplifiers. Each one of the plurality of amplifiers can be disposed along a corresponding one of a plurality of paths between an input of the receiving system and an output of the receiving system. Each one of the plurality of paths can correspond to a different frequency band. The receiving system can include an input multiplexer configured to receive, at one or more of a plurality of input multiplexer inputs, one or more RF signals. Each one of the one or more RF signals can include one or more frequency bands. The input multiplexer can be configured to output each of the one or more RF signals to one or more of a plurality of input multiplexer outputs. The receiving system can include a controller configured to receive an antenna configuration signal and, based on the antenna configuration signal, control the input multiplexer to route each of the one or more RF signals to propagate along one or more of the plurality of paths corresponding to the one of more frequency bands of the RF signal.

Diversity receiver front end system with flexible antenna routing. A receiving system can include a plurality of amplifiers. Each one of the plurality of amplifiers can be disposed along a corresponding one of a plurality of paths between an input of the receiving system and an output of the receiving system. Each one of the plurality of paths can correspond to a different frequency band. The receiving system can include an input multiplexer configured to receive, at one or more of a plurality of input multiplexer inputs, one or more RF signals. Each one of the one or more RF signals can include one or more frequency bands. The input multiplexer can be configured to output each of the one or more RF signals to one or more of a plurality of input multiplexer outputs. The receiving system can include a controller configured to receive an antenna configuration signal and, based on the antenna configuration signal, control the input multiplexer to route each of the one or more RF signals to propagate along one or more of the plurality of paths corresponding to the one of more frequency bands of the RF signal.

A method for terminal clustering in a wireless communication system supporting D2D (Device-to-Device) communication and an apparatus supporting the method are disclosed. More specifically, a method for a user equipment (UE) to perform UE clustering in a wireless communication system supporting D2D communication comprises determining an initial preference value, determining an initial preference triplet by performing an AP (Affinity Propagation) method by increasing or decreasing the preference value, updating a preference triplet through a GSS (Golden Section Search) method based on the initial preference triplet, determining a final preference value for minimizing energy consumption of the entire UEs from the updated preference triplet; and determining a head UE and member UEs belonging to the head UE by performing the AP method by using the final preference value.

A method for terminal clustering in a wireless communication system supporting D2D (Device-to-Device) communication and an apparatus supporting the method are disclosed. More specifically, a method for a user equipment (UE) to perform UE clustering in a wireless communication system supporting D2D communication comprises determining an initial preference value, determining an initial preference triplet by performing an AP (Affinity Propagation) method by increasing or decreasing the preference value, updating a preference triplet through a GSS (Golden Section Search) method based on the initial preference triplet, determining a final preference value for minimizing energy consumption of the entire UEs from the updated preference triplet; and determining a head UE and member UEs belonging to the head UE by performing the AP method by using the final preference value.

A control device includes: a processor configured to: control a multihop communication path in a wireless network that includes a node group; when a first power storage speed of a target relay node in the node group is negative, calculate a first estimated time that is needed to reach a target power-storage value in a case where the target relay node is in a non-relay operating state; and in accordance with a length of the first estimated time calculated, change a state of the target relay node into the non-relay operating state or a stop state and change a state of another node, which is in the non-relay operating state, into a relay operating state.

A control device includes: a processor configured to: control a multihop communication path in a wireless network that includes a node group; when a first power storage speed of a target relay node in the node group is negative, calculate a first estimated time that is needed to reach a target power-storage value in a case where the target relay node is in a non-relay operating state; and in accordance with a length of the first estimated time calculated, change a state of the target relay node into the non-relay operating state or a stop state and change a state of another node, which is in the non-relay operating state, into a relay operating state.

In accordance with an embodiment, a network device includes a network controller and at least one network interface coupled to the network controller that includes at least one media access control (MAC) device configured to be coupled to at least one physical layer interface (PHY). The network controller may be configured to determine a network path comprising the at least one network interface that has a lowest power consumption and minimum security attributes of available media types coupled to the at least one PHY.

In accordance with an embodiment, a network device includes a network controller and at least one network interface coupled to the network controller that includes at least one media access control (MAC) device configured to be coupled to at least one physical layer interface (PHY). The network controller may be configured to determine a network path comprising the at least one network interface that has a lowest power consumption and minimum security attributes of available media types coupled to the at least one PHY.