Abstract:
A method for receiving data, by an end-STA from a root AP, may comprise receiving, from a relay AP, a first beacon frame comprising a relay information element. The relay information element may include a field which indicates whether a root AP BSSID field indicating a BSSID of the root AP is included in the beacon frame. The end-STA may transmit an association request to the relay AP and may receive an association response from the relay AP if the relay AP is allowed by the root AP to associate with the end-STA. The end-STA may receive, from the relay AP, traffic indication map (TIM) indications, of which at least one of the TIM indications may be for the end-STA. The one of the TIM indications may indicate that the data is available for the end-STA. The end-STA may then receive the data from the relay AP.
Abstract:
This disclosure describes systems, methods, and apparatus related to narrowband mesh networking. A device may determine one or more first devices within a coverage area of the device. The device may encode a timeslot frame (TSF) for transmission on a first narrowband channel of one or more narrowband channels. The device may cause the TSF to be wirelessly transmitted to the one or more devices over the first narrowband channel.
Abstract:
A method and a device are provided for controlling operation of a wireless device (200). The method (500) includes transmitting an initial signal (410) to a controller device (120) in an initial mode (505); receiving initial instructions (420) from the controller device in the initial mode, after transmitting the initial signal (510), the initial instructions identifying an operational mode; setting transmit and receive circuitry in the wireless device to transmit and receive according to the operational mode (515, 520, 525); and transmitting operational signals (430) in the operational mode (530). The wireless device 200 includes an antenna controller (290) and an antenna switch (225) for implementing this method.
Abstract:
Exemplary apparatuses and methods are provided associated with an unobtrusive router/relay system (URRS) configured to communicate with a plurality of radio frequency (RF) systems including a first radio frequency (RF) system (e.g. a cell phone, RF system carried or used by an individual or team, etc.), other URRS systems (which each include a second RF receiver/transmitter), and an RF communication's hub (e.g. cell tower, tethered UAV, control center, etc.). Locations are identified for a specific location or number of locations along a transit path where the RF communication's hub lacks transmit/receive coverage with the first RF system. URRS are positioned in the locations or transit path lacking RF communication hub transmit/receive coverage. The exemplary URRS are configured to route/relay the first RF system's signals to the RF communications' hub directly or through one or more other URRS systems. URRS are designed to blend with their surroundings.
Abstract:
Systems and methods for providing broadband internet access to mobile platforms such as vehicles, aircraft, and portable devices, using a network of one or more entities such as drones/unmanned aerial vehicles (UAVs). In one embodiment, the drone communication system comprises an antenna sub-system, a radio sub-system and a data switching sub-system. The mobile platforms comprise antenna and radio sub-systems to communicate with the drones, detect changes in the mobile platforms azimuth and elevation changes, and adjust the mobile platform's antenna beam to compensate for the orientation changes to optimally point toward the drones. The exemplary mobile platform further comprises methods to detect the need for handoff to a different drone and to carry out the handoff.
Abstract:
Provided is a data transmission method using physical network coding in a relay station. The method may include an operation of receiving a first signal and a second signal from first and the second nodes, respectively, an operation of generating a third signal to which a physical network coding is applied based on the first signal and the second signal, an operation of forming a beam which maximizes a lower effective power between effective power of the first channel between the relay station and the first node and effective power of the second channel between the relay station and the second node, and an operation of transmitting the third signal to the first node and the second node based on the beam.
Abstract:
A method and apparatus for zero interference multi-gigabit inter-satellite communication between system satellites (300) and client satellites (301) using millimeter wave beams at transmit and receive frequencies that are aligned to the peak atmospheric molecular absorption frequencies in the electromagnetic spectrum (FIG. 1). The narrow low power beams are accurately steered within a restricted set of directions (FIG. 5) that prevent interference to other space borne radio receivers whether in geostationary or low earth orbits and cannot interfere with terrestrial receivers due to atmospheric absorption. The apparatus comprises an integrated electronically steered 2-D phased array (401), transceiver and baseband integrated circuits (402, 403) with a beam controller (404) coupled to the spacecraft attitude determination and control subsystem (407), central processing unit (406) and solid state storage device (405).
Abstract:
A wireless communication apparatus reducing power consumption of a large circuit size switch unit, includes a demultiplexing unit that separates an input multiplexed signal into plural signals for each input port, a prestage rearrangement unit that rearranges the plural signals input from the demultiplexing unit and outputs plural prestage rearranged signals for each input port, a switch unit that inputs the plural prestage rearranged signals output from the prestage rearrangement unit provided for each input port as plural signals before switching and applies switching processes to the plural signals before the switching to be output as plural switched signals for each output port, a poststage rearrangement unit that inputs and rearranges the plural switched signals output from the switch unit for each output port and outputs plural poststage rearranged signals for each output port, and a multiplexing unit that multiplexes the plural poststage rearranged signals for each output port.
Abstract:
A communication system includes a terminal apparatus, an information providing apparatus outputting content data, a wireless communication relay apparatus relaying communication between the terminal apparatus and the information providing apparatus, a wireless apparatus coupled to the terminal apparatus, and a reception apparatus coupled to the information providing apparatus and the wireless apparatus, wherein the terminal apparatus transmits attribute information to the information providing apparatus, the information providing apparatus transmits identification information to the terminal apparatus, the terminal apparatus transmits the identification information to the wireless apparatus, the wireless apparatus transmits the identification information to the reception apparatus, the reception apparatus transmits the identification information to the information providing apparatus, and the information providing apparatus outputs the content data.
Abstract:
An access network for terminals of a digital telecommunications system includes base stations adapted for receiving radiofrequency signals emitted by the terminals, each terminal a physical layer processing module adapted to form a radiofrequency signal on the basis of binary data in accordance with a predefined physical layer protocol. Moreover, for at least one base station, termed the “partial station”, an inverse physical layer processing, making it possible to extract binary data from a radiofrequency signal, is distributed between the partial station and a processing server distinct from the partial station, an inverse physical layer processing module being made up of a first inverse processing module, integrated into the partial station, and a second inverse processing module, integrated into the processing server. The invention also relates to a method of digital telecommunications.