Abstract: A method of making photolithography mask plate is provided. The method includes: providing a carbon nanotube composite structure, wherein the carbon nanotube composite structure comprises a carbon nanotube layer and a chrome layer coated on the carbon nanotube layer; locating the carbon nanotube composite structure on a substrate to expose partial surfaces of the substrate; and depositing a cover layer on the carbon nanotube composite structure.

Abstract: A method of making photolithography mask plate is provided. The method includes: providing a carbon nanotube layer on a substrate; depositing a chrome layer on the carbon nanotube layer, wherein the chrome layer includes a first patterned chrome layer and a second patterned chrome layer, the first patterned chrome layer is located on the carbon nanotube layer, and the second patterned chrome layer is deposited on the substrate corresponding to holes of the carbon nanotube layer; transferring the carbon nanotube layer with the first patterned chrome layer thereon from the substrate to a base, and the carbon nanotube layer being in contact with the base; and depositing a cover layer on the first patterned chrome layer.

Abstract: Embodiments of synchronized hinges for foldable displays are described. In some embodiments, a hinge may include: a first bracket coupled to a first shaft via a first arm, a second bracket coupled to a second shaft via a second arm, and a synchronization bracket coupled to the first and second shafts.

Abstract: This disclosure provides a method of controlling a transmission of a wireless signal in a wireless telecommunications network, the wireless telecommunications network including a transmitter, a multi-layer transmissive Reconfigurable Intelligent Surface (RIS) including a first transmissive RIS layer and a last transmissive RIS layer, and a receiver.

Abstract: According to the present disclosure there is provided a multiple-input-multiple-output (MIMO) transmitter for transmitting wireless communication signals over a communication channel to a receiver, the transmitter including a digital signal processor configured to perform pre-coding on a plurality Ns of data streams; a plurality NRF of radio-frequency (RF) chains each configured to pass a pre-coded data stream from the digital signal processor to generate a signal representing that data stream; a lens antenna array comprising an array of NT antenna elements; and a selecting unit coupled between the plurality NRF of RF chains and the lens antenna array, the selecting unit including a plurality of separate coupling units each configured to couple a respective RF chain to a selective sub-array of NTBRF antenna elements concurrently for transmitting the signal representing the data stream passed through that RF chain.

Abstract: A method of controlling transmission of a wireless signal in a wireless telecommunications network including a transmitting node, a receiving node, and an Intelligent Reflective Surface (IRS), the transmitting node including a processor operating a first neural network that inputs an input bit sequence and outputs the wireless signal and a transmitter to transmit the wireless signal output by the first neural network, the IRS includes a reflective surface for reflecting the wireless signal transmitted by the transmitter and further includes a processor for applying a phase change to the wireless signal according to a phase shift matrix, and the receiving node includes a receiver for receiving an accumulated wireless signal transmitted by the transmitter and reflected off the reflective surface and a processor operating a second neural network that inputs the received accumulated wireless signal and outputs an output bit sequence.

Abstract: A reflective surface for directing wireless communications signals that includes a plurality of independently reconfigurable elements disposed irregularly on the surface is disclosed. A method of controlling a communication channel of a wireless communication system that includes the reflective surface having an irregular element arrangement is also disclosed.

Abstract: Embodiments of the present disclosure provide a method and apparatus for configuring multi-level cells or cell clusters and a communications system. The method includes: exchanging by a base station with one or more other base stations or cell cluster heads in the same level to obtain first information; receiving, by the base station, second information reported by one or more base stations or cell cluster heads in the lower level; configuring one or more cells in the lower level into a cell cluster by the base station according to the first information and the second information, and determining a cluster head of the cell cluster; and performing information transmission with the cluster head of the cell cluster.

Abstract: A method of performing channel estimation in a multiple-input-multiple-output (MIMO) communication system comprising a downlink device and an uplink device arranged to communicate over a communication channel, the method including at the uplink device: analyzing a first channel vector representing channel gains between the downlink device and a first antenna of the uplink device in the angular domain to identify a set of angular domain support points; generating from the set of angular domain support points a value vector; and feeding back from the uplink device to the downlink device an indication of the value vector; and at the downlink device: analyzing a second channel vector representing channel gains between the downlink device and a second antenna of the uplink device; generating a transmit steering matrix; and generating an estimate of the first channel vector.

Abstract: Embodiments of the present disclosure provide a resource allocation method and apparatus for a small cell cluster and a communications system. The resource allocation method includes: exchanging by the base station of the upper level with another base station of the upper level, to obtain information on resources and/or interference of the other base station of the upper level; receiving information by the base station of the upper level at least from the cluster head of the SCC, to obtain information on resources and/or interference of the base station of the upper level; and allocating resources for the small cell cluster by the base station of the upper level based on the obtained information on resources and/or interference of the other base station of the upper level and the information on resources and/or interference of the base station of the upper level.

Abstract: A method of performing channel estimation in a multiple-input-multiple-output (MIMO) communication system comprising a downlink device and an uplink device arranged to communicate over a communication channel, the method including at the uplink device: analyzing a first channel vector representing channel gains between the downlink device and a first antenna of the uplink device in the angular domain to identify a set of angular domain support points; generating from the set of angular domain support points a value vector; and feeding back from the uplink device to the downlink device an indication of the value vector; and at the downlink device: analyzing a second channel vector representing channel gains between the downlink device and a second antenna of the uplink device; generating a transmit steering matrix; and generating an estimate of the first channel vector.

Abstract: Multiple-Input Multiple-Output (MIMO) transmitters, receivers and transceivers are disclosed, as well as other associated devices, systems and methods. In particular, aspects and embodiments of the disclosure relate to MIMO transmitters, receivers and transceivers implemented as modules of relay devices for signals transmitted to and/or from base-stations and/or mobile-stations, in particular when such devices are implemented on mobile and/or aerial vehicles, and in particular for transmitting, receiving and/or forwarding wireless communication signals at frequencies in what is termed the “millimeter-wave band”. In such devices, a power control unit is configured to determine an energy availability measure and/or a power demand measure and, in response, cause a switching unit to connect a plurality of RF chains to a plurality of antenna elements in different states.

Abstract: Embodiments of the present disclosure provide a resource management method and apparatus for a cell cluster and a communications system. The method includes: transmitting resource allocation information by a base station taken as a cluster head of the cell cluster to other base stations in the cell cluster. By transmitting the resource allocation information by the base station taken as the cluster head of the cell cluster to the other base stations in the cell cluster, resource allocation for the cells may be performed efficiently, capabilities of coordinating inter-cell interference may be improved, and as the cell cluster may be expanded to cell clusters of a lower level or more levels, scalability of the network may be improved.

Abstract: This disclosure provides a method in a wireless telecommunications network, and a wireless telecommunications network node for implementing the method, the network including a transmitter having an overall coverage area and a plurality of User Equipment (UE) within the transmitter's overall coverage area, the method including receiving data indicating a first count of UEs of the plurality of UEs disposed in a first section of the transmitter's overall coverage area and further indicating a second count of UEs of the plurality of UEs disposed in a second section of the transmitter's overall coverage area; comparing the first and second counts to a predetermined threshold; and transmitting a first data beam having a first beam coverage area and a second data beam having a second beam coverage area, wherein a magnitude of the first beam coverage area is based on the comparison of the first count to the predetermined threshold and a magnitude of the second beam coverage area is based on upon the comparison of the

Abstract: According to the present disclosure there is provided a multiple-input-multiple-output (MIMO) transmitter for transmitting wireless communication signals over a communication channel to a receiver, the transmitter including a digital signal processor configured to perform pre-coding on a plurality Ns of data streams; a plurality NRF of radio-frequency (RF) chains each configured to pass a pre-coded data stream from the digital signal processor to generate a signal representing that data stream; a lens antenna array comprising an array of NT antenna elements; and a selecting unit coupled between the plurality NRF of RF chains and the lens antenna array, the selecting unit including a plurality of separate coupling units each configured to couple a respective RF chain to a selective sub-array of NTBRF antenna elements concurrently for transmitting the signal representing the data stream passed through that RF chain.

Abstract: This disclosure provides a method in a wireless telecommunications network, and a wireless telecommunications network node for implementing the method, the network including a transmitter having an overall coverage area and a plurality of User Equipment (UE) within the transmitter's overall coverage area, the method including receiving data indicating a first count of UEs of the plurality of UEs disposed in a first section of the transmitter's overall coverage area and further indicating a second count of UEs of the plurality of UEs disposed in a second section of the transmitter's overall coverage area; comparing the first and second counts to a predetermined threshold; and transmitting a first data beam having a first beam coverage area and a second data beam having a second beam coverage area, wherein a magnitude of the first beam coverage area is based on the comparison of the first count to the predetermined threshold and a magnitude of the second beam coverage area is based on upon the comparison of the

Abstract: Embodiments of the present disclosure provide a method and apparatus for configuring multi-level cells or cell clusters and a communications system. The method includes: exchanging by a base station with one or more other base stations or cell cluster heads in the same level to obtain first information; receiving, by the base station, second information reported by one or more base stations or cell cluster heads in the lower level; configuring one or more cells in the lower level into a cell cluster by the base station according to the first information and the second information, and determining a cluster head of the cell cluster; and performing information transmission with the cluster head of the cell cluster.

Abstract: Embodiments of the present disclosure provide a resource management method and apparatus for a cell cluster and a communications system. The method includes: transmitting resource allocation information by a base station taken as a cluster head of the cell cluster to other base stations in the cell cluster. By transmitting the resource allocation information by the base station taken as the cluster head of the cell cluster to the other base stations in the cell cluster, resource allocation for the cells may be performed efficiently, capabilities of coordinating inter-cell interference may be improved, and as the cell cluster may be expanded to cell clusters of a lower level or more levels, scalability of the network may be improved.

Abstract: Embodiments of the present disclosure provide a resource allocation method and apparatus for a small cell cluster and a communications system. The resource allocation method includes: exchanging by the base station of the upper level with another base station of the upper level, to obtain information on resources and/or interference of the other base station of the upper level; receiving information by the base station of the upper level at least from the cluster head of the SCC, to obtain information on resources and/or interference of the base station of the upper level; and allocating resources for the small cell cluster by the base station of the upper level based on the obtained information on resources and/or interference of the other base station of the upper level and the information on resources and/or interference of the base station of the upper level.