A system operative to synchronize wireless transmissions between a base station and a plurality of wireless client devices using a plurality of twisted pairs. The system includes a base station located in a first area and comprising a medium access controller (MAC) functionality; a plurality of twisted pairs; and a plurality of converters located in other areas, in which the plurality of twisted pairs are operative to connect the base station with the plurality of converters, thereby forming a star topology. The base station is configured to determine a transmission plan to be followed by the base station and a plurality of wireless client devices associated with the base station. The base station is configured to distribute the transmission plan via the plurality of twisted pairs and converters to the wireless client devices, thereby synchronizing wireless transmissions between the base station and at least some of the wireless client devices.

A system operative to synchronize wireless transmissions between a base station and a plurality of wireless client devices using a plurality of twisted pairs. The system includes a base station located in a first area and comprising a medium access controller (MAC) functionality; a plurality of twisted pairs; and a plurality of converters located in other areas, in which the plurality of twisted pairs are operative to connect the base station with the plurality of converters, thereby forming a star topology. The base station is configured to determine a transmission plan to be followed by the base station and a plurality of wireless client devices associated with the base station. The base station is configured to distribute the transmission plan via the plurality of twisted pairs and converters to the wireless client devices, thereby synchronizing wireless transmissions between the base station and at least some of the wireless client devices.

A network for providing air-to-ground (ATG) wireless communication in various cells may include an in-flight aircraft including an antenna assembly, a plurality of ATG base stations, a plurality of terrestrial base stations. Each of the ATG base stations defines a corresponding radiation pattern, and the ATG base stations are spaced apart from each other to define at least partially overlapping coverage areas to communicate with the antenna assembly in an ATG communication layer defined between a first altitude and a second altitude. The terrestrial base stations are configured to communicate primarily in a ground communication layer below the first altitude. The terrestrial base stations and the ATG base stations are each configured to communicate using the same radio frequency (RF) spectrum in the ground communication layer and ATG communication layer, respectively.

A network for providing air-to-ground (ATG) wireless communication in various cells may include an in-flight aircraft including an antenna assembly, a plurality of ATG base stations, a plurality of terrestrial base stations. Each of the ATG base stations defines a corresponding radiation pattern, and the ATG base stations are spaced apart from each other to define at least partially overlapping coverage areas to communicate with the antenna assembly in an ATG communication layer defined between a first altitude and a second altitude. The terrestrial base stations are configured to communicate primarily in a ground communication layer below the first altitude. The terrestrial base stations and the ATG base stations are each configured to communicate using the same radio frequency (RF) spectrum in the ground communication layer and ATG communication layer, respectively.

A wireless sensor network deployment structure combined with SFFT and COA and a frequency spectrum reconstruction method therefor. The wireless sensor network deployment structure includes: frequency spectrum acquisition sensor nodes dispersed in each region, and a sink node, wherein all the frequency spectrum acquisition sensor nodes have the same structure, and include: a broadband frequency spectrum antenna, a delayer, an ADC, a first baseband processing module, a DAC and a transmitting antenna that are successively connected; all the frequency spectrum acquisition sensor nodes are cooperated to realize SFFT and COA of signals; the signals transmitted by all the frequency spectrum acquisition sensor nodes are superimposed over the air and received by the sink node; and the sink node extracts a data domain from a received signal frame by post-processing, thereby completing frequency spectrum reconstruction. The solution can be easily deployed in an existing wireless sensor network without changing the traditional ADC working mode and communication mode; moreover, the delay is shorter, the sampling rate of the reconstructed frequency spectrum is higher, and the complexity is lower.

A wireless sensor network deployment structure combined with SFFT and COA and a frequency spectrum reconstruction method therefor. The wireless sensor network deployment structure includes: frequency spectrum acquisition sensor nodes dispersed in each region, and a sink node, wherein all the frequency spectrum acquisition sensor nodes have the same structure, and include: a broadband frequency spectrum antenna, a delayer, an ADC, a first baseband processing module, a DAC and a transmitting antenna that are successively connected; all the frequency spectrum acquisition sensor nodes are cooperated to realize SFFT and COA of signals; the signals transmitted by all the frequency spectrum acquisition sensor nodes are superimposed over the air and received by the sink node; and the sink node extracts a data domain from a received signal frame by post-processing, thereby completing frequency spectrum reconstruction. The solution can be easily deployed in an existing wireless sensor network without changing the traditional ADC working mode and communication mode; moreover, the delay is shorter, the sampling rate of the reconstructed frequency spectrum is higher, and the complexity is lower.

A communication scheme and system converges a 5G communication system supporting a data rate higher than that of a 4G system with an internet of things (IoT) technology. Applicable to intelligent services (e.g., smart homes, smart buildings, smart cities, smart cars, connected cars, health care, digital education, retails, and security and safety-related services), the communication scheme and system is based on the 5G communication technology and the IoT-related technology. Methods of operation a terminal and a network for facilitating a 5G terminal registration procedure in a wireless communication system are disclosed.

A communication scheme and system converges a 5G communication system supporting a data rate higher than that of a 4G system with an internet of things (IoT) technology. Applicable to intelligent services (e.g., smart homes, smart buildings, smart cities, smart cars, connected cars, health care, digital education, retails, and security and safety-related services), the communication scheme and system is based on the 5G communication technology and the IoT-related technology. Methods of operation a terminal and a network for facilitating a 5G terminal registration procedure in a wireless communication system are disclosed.

A method for ubiquitously covering a selected area with a single wireless communication channel. At least two wireless converters are placed at different locations to provide an aggregated wireless coverage area, the wireless converters covering wirelessly only a respective portion of a selected area with least two portions at least partially overlapping. An OFDM base station transmits a sequence of OFDM signals simultaneously via at least two distribution lines, each OFDM signal modulated by sub-carriers. The wireless converters simultaneously receive, via respective distribution lines, the OFDM signals from the OFDM base station, and up-convert a respective OFDM signal into an RF band to re-transmit wirelessly the respective OFDM signal. At least two re-transmissions of each OFDM signal arrive at a wireless client device. Each sub-carrier from each OFDM signal re-transmission can combine with the respective sub-carrier of the other re-transmissions of said respective OFDM signal, thereby facilitating said ubiquitous coverage.

A method for ubiquitously covering a selected area with a single wireless communication channel. At least two wireless converters are placed at different locations to provide an aggregated wireless coverage area, the wireless converters covering wirelessly only a respective portion of a selected area with least two portions at least partially overlapping. An OFDM base station transmits a sequence of OFDM signals simultaneously via at least two distribution lines, each OFDM signal modulated by sub-carriers. The wireless converters simultaneously receive, via respective distribution lines, the OFDM signals from the OFDM base station, and up-convert a respective OFDM signal into an RF band to re-transmit wirelessly the respective OFDM signal. At least two re-transmissions of each OFDM signal arrive at a wireless client device. Each sub-carrier from each OFDM signal re-transmission can combine with the respective sub-carrier of the other re-transmissions of said respective OFDM signal, thereby facilitating said ubiquitous coverage.