A multiple-access transceiver handles communications with mobile stations in environments that exceed mobile station design assumptions without necessarily requiring modifications to the mobile stations. One such environment is in Earth orbit. The multiple-access transceiver is adapted to close communications with mobile stations while exceeding mobile station design assumptions, such as greater distance, greater relative motion and/or other conditions commonly found where functionality of a terrestrial transceiver is to be performed by an orbital transceiver. The orbital transceiver might include a data parser that parses a frame data structure, a signal timing module that adjusts timing based on orbit to terrestrial propagation delays, frequency shifters and a programmable radio capable of communicating from the Earth orbit that uses a multiple-access protocol such that the communication is compatible with, or appears to the terrestrial mobile station to be, communication between a terrestrial cellular base station and the terrestrial mobile station.

A transmitter is set to time division multiple access (TDMA) mode and allocated a first TDMA channel. In the TDMA mode, the additional TDMA channels are allocated to and deallocated from the transmitter, according a traffic demand at the transmitter, until all TDMA channels are assigned and the traffic demand reaches a threshold, whereupon the transmitter is switched to a frequency division multiple access (FDMA) mode, and assigned an FDMA channel. In response to traffic levels, the transmitter is switched to larger bandwidth FDMA channels and, optionally, to a concurrent FDMA-TDMA mode having a large bandwidth FDMA channel in addition to a number of TDMA channels. Optionally, switching the transmitter among TDMA mode, FDMA mode, and concurrent FDMA-TDMA mode is based, at least in part, on QoS, or time of day, or user statistics, or combinations thereof.

Satellite communications systems, methods, and related devices are described. In one embodiment, a satellite communications system is configured to dynamically allocate bandwidth among different downlink beams. The satellite may receive and compile traffic measurements and terminal parameters. The satellite may be configured with different downlink beam coverage areas, and may dynamically allocate downlink bandwidth and particular frequency channels to different beam coverage areas based on the measurements and parameters. The satellite may also assign frequency channels and time slots based on such measurements and parameters.

The disclosure presents a method and a wireless communication device configured to use a first communication protocol for performing a first communication event and a second communication protocol for performing a second communication event, comprising; a first processing unit may be configured to perform the first communication event within a first communication window by the use of the first communication protocol; a second processing unit may be configured to perform the second communication event within a second communication window by the use of the second communication protocol; a wireless communication unit connected to a radio-frequency antenna may be configured to transmit and/or receive a packet wirelessly, and the wireless communication unit is further connected to the second processing unit, the second processing unit may be configured to perform the second communication event of the packet via the wireless communication unit, and the wireless communication unit is further connected to the first processing unit configured to perform the first communication event of the packet via the wireless communication unit. Additionally, the second processing unit or the wireless communication unit may be configured to transmit an event signal to the first processing unit when performing the second communication event or when the wireless communication unit receives a packet, respectively, and the first processing unit is configured to arrange the first communication window (or the first communication event) with respect to the second communication window (or the second communication event) based on the event signal so that the interference between the first communication window and the second communication window is minimized when the first processing unit and the second processing unit performs the first communication event and the second communication event, respectively.

A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus is configured to determine whether radar signals are present on one or more channels. The apparatus is configured to transmit a channel feedback report that includes channel information for each of the one or more channels based on the determination of whether radar signals are present on the one or more channels. The channel information for each of the one or more channels includes at least one of a time at which radar signal detection was attempted, a frequency range of a detected radar signal, a set of radar signal characteristics, a received radar vector, a geographical location of the wireless device when radar signal detection was attempted, or an indication of wireless activity.

Satellite communications systems, methods, and related devices are described. In one embodiment, a satellite communications system is configured to dynamically allocate bandwidth among different downlink beams. The satellite may receive and compile traffic measurements and terminal parameters. The satellite may be configured with different downlink beam coverage areas, and may dynamically allocate downlink bandwidth and particular frequency channels to different beam coverage areas based on the measurements and parameters. The satellite may also assign frequency channels and time slots based on such measurements and parameters.

A method and a system for multi-user transmission in a network, comprising at least on network control center NCC and one or more terminals, wherein the method comprises at least the following steps: determining the number of 4D-TDMA carriers as a function of the number and needs of the terminals, determining the type (SCPC or TDMA) and frequency band Bi of each of the 4D-TDMA carriers as a function of the terminals transmitting on the carriers, for each frame, dividing the band B into PTDMA transmission channels and into PSCPC service channels, each channel consisting of frames comprising a plurality of slots, STDMA slots and SSCPC slots, dynamically allocating a plurality of slots of a 4D-TDMA carrier according to the services required by each terminal, configuring the coding and modulation scheme of each slot by taking account of the quality of the received signals.

A method and wireless communication device use a first processing unit to perform a first communication event within a first communication window by use of a first communication protocol, a second processing unit to perform a second communication event within a second communication window by use of a second communication protocol, and a wireless communication unit connected to a radio-frequency antenna to transmit and/or receive a packet wirelessly. The first and second processing units may perform the first and second communication events via the wireless communication unit. The second processing unit or the wireless communication unit may transmit an event signal to the first processing unit when performing the second communication event or receiving a packet, respectively, to allow the first processing unit to arrange the first communication window (or first communication event) with respect to the second communication window (or second communication event) to minimize interference.

A receiving device includes a receiving unit that receives, via a receiving antenna, an image signal including an in-vivo image of a subject that is captured by an in-vivo-image acquiring device introduced into the subject; a transmitting unit that wirelessly transmits the image signal to a real-time display device that displays the in-vivo image in real time; a detecting unit that detects a non-receiving period in which the receiving unit does not receive the image signal; and a control unit that performs a control to wirelessly transmit the image signal to the real-time display device during the non-receiving period immediately after receipt of the image signal by the receiving unit.

A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus is configured to determine whether radar signals are present on one or more channels. The apparatus is configured to transmit a channel feedback report that includes channel information for each of the one or more channels based on the determination of whether radar signals are present on the one or more channels. The channel information for each of the one or more channels includes at least one of a time at which radar signal detection was attempted, a frequency range of a detected radar signal, a set of radar signal characteristics, a received radar vector, a geographical location of the wireless device when radar signal detection was attempted, or an indication of wireless activity.