33results about How to "Realize space reuse" patented technology

The invention discloses a DLS (direct-link setup) space multiplexing method, and workstations and a control access point supporting the DLS. The method comprises the following steps: determining DLS links polled at the same time according to the number of the current idle service channels and / or information of adjacent workstations reported by the workstation; and transmitting a polling message, and indicating the DLS links polled at the same time in the polling message. The method can achieve DLC space multiplexing to simultaneously poll the plurality of DLS links, and the plurality of corresponding workstations can simultaneous carry out DLS service, thereby improving the space utilization rate of the system resources.

The invention discloses a GMI sensor probe based on a ring-shaped amorphous wire and a preparation method thereof. The GMI sensor probe comprises a amorphous wire coil which is formed by winding the ring-shaped amorphous wire, wherein the amorphous wire coil comprises an amorphous wire section with the sensitivity to magnetic fields and an amorphous wire section losing the sensitivity to magnetic fields, and a signal acquiring coil is wound around the amorphous wire section losing the sensitivity to magnetic fields; The preparation method of the GMI sensor probe comprises the following steps of winding the amorphous wire into the ring-shaped amorphous wire coil, conducting heat treatment on a defined section of the amorphous wire coil so as to enable the amorphous wire coil to form the amorphous wire section with the sensitivity to magnetic fields and the amorphous wire section losing the sensitivity to magnetic fields, and winding and forming the signal acquiring coil around the amorphous wire section losing the sensitivity to magnetic fields. A processing shortcoming that the amorphous wire is hard to weld can be overcome, amorphous wire spatial reuse is achieved, and meanwhile only a mature heat treatment process in the material processing techniques is needed while plenty of complicated and immature amorphous welding is not needed.

The invention discloses a signal transmitting and receiving method for a code division multiple access multiple-input-multiple-output (CDMA-MIMO) system by employing generalized three-dimensional complementary codes, which belongs to the field of communication and aims to solve the problems that the signal transmitting and receiving method for the existing CDMA-MIMO system is low in adaptive capacity relative to different communication environments and the resource utilization rate requirement of the system is high. The method comprises the following steps: respectively performing space-time coding and spectrum spreading based on the generalized three-dimensional complementary codes on initial data transmitted by K users; superposing and merging a data flow which corresponds to the same antenna and the same carrier, modulating the data which corresponds to the same antenna and the same carrier to the same carrier for merging and transmitting; then simultaneously receiving the signal by employing P receiving antennas, respectively performing carrier demodulation by employing M carriers after each path of signal is synthesized, and despreading and decoding based on the generalized three-dimensional complementary codes, wherein each user acquires P groups of data corresponding to the P receiving antennas; merging and judging by employing the maximum ratio merger criterion, and outputting the data. The method is used for transmitting and receiving signals.

Embodiments of the present application provide an antenna structure and electronic equipment, which relate to the technical field of electronic equipment, and enable the antenna structure to cover the same frequency band while integrating two antennas to realize spatial multiplexing. The antenna structure includes: a signal reference ground, a first antenna and a second antenna; the first antenna includes a first radiator and a first feed line, the first radiator has a first feed position, and the first radiator passes through the first feed The electric wire is fed into electricity from the first feeding position, and the first radiator is electrically connected to the signal reference ground; the second antenna includes a second radiator and a second feeding line, the second radiator has a second feeding position, and the second The radiator is fed with electricity from the second feed position through the second feed line, the second feed line includes a signal transmission line and a signal reference ground line, and the signal reference ground line is electrically connected to the first radiator. The antenna structure provided by the embodiments of the present application is applied to electronic equipment.

The embodiment of the present invention discloses a data communication method and device. The data communication method includes: when a network node receives a PPDU, acquiring a BSS identifier in the PPDU; if the BSS identifier in the PPDU is different from the first BSS identifier, And the BSS identifier in the PPDU is the same as the second BSS identifier, and it is judged whether the PPDU meets the preset spatial multiplexing condition; the first BSS identifier is the identifier of the first BSS to which the network node belongs, and the second BSS identifier is the extended BSS to which the target relay belongs , the target relay and the network node belong to the first BSS; if the PPDU satisfies the preset spatial multiplexing condition, compete for the access channel, and communicate with the stations in the first BSS except the target relay. By adopting the embodiment of the present invention, the problem of data transmission collision during space reuse between different BSSs can be solved.

The invention discloses a dual-band eight-port MIMO terminal antenna based on radiator multiplexing technology, which includes a dielectric substrate and a pair of dielectric boards perpendicular to the dielectric substrate; a metal floor is arranged on the lower surface of the dielectric substrate, and a There are several antenna pair units on it, the antenna pair units include the first antenna unit on the inner wall of the dielectric board and the second antenna unit on the outer wall, each antenna pair unit includes two antenna ports, one antenna port is in the metal The first feed point on the floor; the other antenna port is the second feed point of the second antenna unit; the first antenna unit is connected to the first feed point feed through the feeder line and the coaxial inner core passing through the floor, The second antenna element is fed directly through the coaxial line. The antenna has the advantages of antenna-to-unit radiator multiplexing, no need for additional decoupling structures, dual-band operation and high isolation between antenna units, and is suitable for 5G smart terminals.

The invention discloses a horizontal type throat block driving device of a semi-flexible nozzle guide rail of a continuous transonic wind tunnel, which realizes precise control of the position and posture of the nozzle section throat block. It includes a drive unit composed of a motor, a reducer, a screw, a slide table, a guide rail, and a slider arranged horizontally; an execution unit composed of a two-force rod and a joint bearing; and a support unit composed of a support platform. The invention has simple and compact structure; each drive is controlled independently, and the overall drive device has high stability; in the case of limited vertical travel, the spare space in the horizontal direction can be used to realize pose adjustment; the dislocation arrangement of guide rails realizes Space reuse saves space in the horizontal direction; all drive units are above the support platform, which greatly facilitates mechanism maintenance; six degrees of freedom can be adjusted to resist the influence of the lateral force of the throat block.

A channel access method and a station under spatial multiplexing, including detecting the first wireless signal of a third-party station by the listening station, updating the local network allocation vector and / or response frame to indicate delayed access time; determining the third-party station's When the second wireless signal satisfies the spatial orthogonal condition, a channel contention access process is triggered, and subsequent data transmission is completed within the updated time. In the case where the network allocation vector or the response frame indicates that the delayed access time is not 0, when the third-party station determines that the sector transmission in the transmission initiated by the station is orthogonal to its own transmission space, it ignores or resets The network allocation vector or response frame indicates the delayed access time, and the competition is initiated within the updated network allocation vector or response frame to indicate the delayed access time to start spatial orthogonal transmission, which realizes space multiplexing and ensures the inter-site channel Access fairness, thus ensuring the effectiveness of site data transmission.

A first communication device that simultaneously transmits to a group of two or more second communication devices using multi-user multiple input multiple output (MU-MIMO) communication; performs beamforming training with a selected second communication device of the group of second communication devices by transmitting one or more transmit packets including one or more training units, wherein an analog beamforming training matrix and / or a digital beamforming training matrix adapted for beamforming training with the selected second communication device are applied on the one or more training units, receiving from the selected second communication device feedback in response to the transmitted transmit packets, the feedback including beamforming information determined by the selected second communication device based on the reception of the transmit packets, and determining, for use in the simultaneous transmission of data to a group of two or more second communication devices including the selected second communication device, an updated analog beamforming matrix based on the analog beamforming training matrix and the received feedback and / or an updated digital beamforming matrix based on the digital beamforming training matrix and / or the received feedback.

Provided are a pilot frequency allocation method and device based on MIMO, the method comprising: if the total number of demodulation reference signal (DMRS) ports corresponding to a sector to be managed is less than the total number of wave beams on the sector to be managed, then grouping the wave beams on the sector to be managed in a preset direction so as to obtain at least two first groups, and respectively numbering the wave beams in each of the first groups in the preset direction; respectively allocating a corresponding DMRS port for each wave beam in each of the first groups; allocating the same DMRS port for the wave beams having the same number in different first groups; and respectively determining a matching wave beam corresponding to each user terminal on the sector to be managed, and determining a DMRS port matching the user terminal according to the DMRS port allocated for the matching wave beam. The embodiment of the present invention removes the limit of maximum matches on the number of user layers in the prior art, and effectively improves demodulation performance.

The invention discloses an improved dual-band Femtocell (DBF) unlicensed channel access method to realize spatial multiplexing. According to relative distance between the DBF and a WiFi AP, the method has two situations: when the DBF and the WiFi AP are visible to each other, the method is simplified into an existing method, that is, the DBF and the WiFi AP occupies an unlicensed channel at different time, and all of DBF users in a DBF schedulable coverage range carry out data transmission; and when the DBF and the WiFi AP are invisible to each other, if the WiFi AP carries out data transmission with WiFi users in the coverage overlapped range, the DBF cannot take up the unlicensed channel, and if the WiFi AP carries out data transmission with WiFi users outside the coverage overlapped range, the DBF can take up the unlicensed channel and calls DBF users outside the coverage overlapped range to carry out data transmission. Compared with an existing DBF unlicensed channel access method, the method realizes maximized utilization of unlicensed frequency band frequency spectrum resources on the basis of ensuring WiFi system performance, and improves the system performance.