A wireless multi-hope network of nodes including data nodes and at least one sink node. The data nodes include battery-powered nodes (BPNs) having active and sleep periods and mains-powered nodes (MPNs) having only active periods, wherein each data node transmits the packets only within corresponding active periods. A BPN includes a transceiver for transmitting and receiving data packets and a processor for determining a schedule of active and sleep periods of the BPN independently from the active and sleep periods of other data nodes in the network and independently from commands transmitted by the sink node, and a battery for providing energy to the transceiver and the processor. The processor switches the transceiver ON and OFF according to the schedule.

Decreasing interference of a first device operating according to high speed serial bus standard on a second device operating according to another different communication standard is provided. The method can include obtaining a first signal strength received by the second device before connection of the first device. The method can include obtaining a second signal strength received by the second device after connection of the first device and comparing the first signal strength and the second signal strength. If decrease of the second signal strength in comparison with the first signal strength exceeds a predetermined threshold, a command can be sent to the first device to enable the first device to operate at a lower bandwidth than the high speed serial bus standard.

A display device accessing a broadcast receiver via a web browser according to one embodiment of the present invention includes a user interface unit configured to receive an input signal from a user, a broadcast service module configured to receive a broadcast signal, a communication module configured to perform data communication with a server and the broadcast receiver, a display module configured to display at least one or more contents and a controller, the controller configured to access a web address corresponding to the broadcast receiver via the web browser, the controller configured to receive an IP (internet protocol) address information mapped to the web address from a DNS (domain name server), the controller configured to access the broadcast receiver using the received IP address, the controller configured to receive data of content displayed on the broadcast receiver and control the data to be displayed on a screen of the display device.

A collaborative method for a node includes forming a local network with at least one other node using a lower power subsystem; selecting a master node from among the local network based on a first set of criteria; and communicating with a back end server over a wireless wide area network (WWAN) using a higher power subsystem. An apparatus may include a first subsystem for communicating with a local network; and a second subsystem having an active mode and an inactive mode, the second subsystem for communicating with a wireless wide area network (WWAN) when in the active mode, the apparatus selecting the active mode or inactive mode based on a set of criteria.

A method in a radio network node for ranking cells within a group of cells in a cellular network is provided. The radio network node is serving a first cell, in the group of cells. The radio network node receives (201) power level measurements from one or more user equipments. The power level measurements respectively indicate a power level in at least one cell of the group of cells where the respective one or more user equipments is active. The radio network node then ranks (202) importance of the cells in the group of cells, both based on the power level measurements, and on the number, for each cell out of the group of cells, of user equipments whose power level measurements indicate that the respective cell has the highest power level.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may select, based at least in part on a sensor selection criteria, a first subset of sensors from a set of available sensors of the UE, each sensor in the set of available sensors associated with a sensor type. The UE may perform, using the first subset of sensors, sensing operations to obtain a first sensing data, the first sensing data comprising sensing data measured by the UE during the sensing operations. The UE may transmit a first sensing report indicating the first sensing data. The UE may receive, based at least in part on the first sensing report, a second sensing report indicating a second sensing data, the second sensing data comprising a unified sensing report based on the first sensing report from the UE and one or more additional sensing reports from other UE.

Wireless communication system for underground pipeline inspection. The system includes a plurality of sensor nodes moved by robots within the pipeline and each sensor node includes a radio transceiver. A plurality of spaced apart, above ground relay nodes are deployed along the pipeline, each relay node including a radio transceiver for communication with the sensor nodes. A remote monitoring center is provided in communication with the relay nodes, whereby a leak detected by a sensor node is communicated to the remote monitoring center. Each sensor node may further include a microcontroller, an accelerometer and a timer.

The present invention discloses a method and equipment for saving energy. The method comprises the following steps: the first network node acquires load information of the second network node next to the first and modifies energy saving state according to its own load information and that of said second network node; said first and second network nodes send information on indication for saving energy state to the adjacent third network node and inform the information of modifying energy saving state to said third network node based on said information on indication for saving energy state. Embodiments of the present invention optimize resource utilization rate of the whole network.

[Problem] To provide a base station device and a handover control method capable of avoiding a situation in which the base station device of a cell becomes overloaded when the cell transitions from an inactive state to an active state. [Solution] A base station device (100) having: an adjacent base station information table (150) for storing adjacent base station information that includes handover suppression information correlated with an adjacent cell (200a) managed by an adjacent base station device (200), and also includes the processing capacity index of the adjacent base station device; and a handover control unit (130) for limiting the handover of a mobile terminal device (300) under control to an activated adjacent cell on the basis of the handover suppression information and the processing capacity index when the adjacent cell transitions from an inactive state to an active state.

In a wireless communication system, a master device includes a wireless communicator that performs wireless communication with the slave device, a power supply that supplies power to each unit of the master device, an interrupt detector that detects various interrupts, and a controller that controls the entire master device, the interrupt detector supplies power from the power supply to each unit when detecting the interrupt, and the controller performs control to continuously transmit a capture signal to the slave device that waits for reception at a reception timing of a first predetermined interval, via the wireless communicator for time longer than the first predetermined interval when the detected interrupt is an interrupt that requests signal transmission to the slave device, and control to await a capture signal transmitted from the slave device through the wireless communicator when the detected interrupt is a timer interrupt occurring at a second predetermined interval.