36results about How to "Increase perceived speed" patented technology

The invention discloses a device and method for quickly detecting equipment faults in a data center computer room, including a track, a moving mechanism is slidably connected to the lower part of the outer surface of the track, and a control box is fixedly connected to the lower end of the moving mechanism, and the control box The middle part of the lower end of the telescopic controller is movably connected with a telescopic controller through a bearing, and an adjustment mechanism is interspersed and fixedly connected to the outer surface of the telescopic controller, and a camera is movably connected to the lower part of the outer surface of the adjustment mechanism, and the left front and left end of the camera are The rear parts are all provided with cameras, the middle part of the front end of the control box is fixedly connected with a display, and the upper front part and the upper rear part of the moving mechanism are fixedly connected with a fixing frame. A device and method for quickly sensing equipment failures in a data center computer room according to the present invention, the entire device can perform mobile inspections according to the planned track route, and can quickly sense whether the equipment in the computer room is faulty, the sensing efficiency is high, and it is suitable for wide application .

Provided are a radio communication system, a base station, a mobile station, and a radio communication method, by which it is possible to shorten a control time until the transmission of uplink data is possible, and to improve a perceived speed of a user when uplink data is small. A base station 100 transmits collision-type access permission including information on a collision-type access channel toward a plurality of mobile stations, the collision-type access channel serving as a radio resource other than a radio resource assigned in response to a scheduling request and a radio resource available for transmission of uplink data by the plurality of mobile stations. A mobile station 200A transmits the uplink data to the base station by using the collision-type access channel on the basis of the collision-type access permission received from the base station.

The invention relates to a method for fast spectrum sensing , which comprises the following steps: establishing a paired carrier multiple-access fast spectrum sensing model; obtaining a noise varianceestimation value of the paired carrier multiple-access fast spectrum sensing model through parameter estimation; obtaining a received signal sample value of the sensing terminal in the paired carriermultiple access fast spectrum sensing model according to the noise variance estimation value; and according to the received signal sampling value of the sensing terminal, determining an idle frequency band, and initiating communication by the sensing terminal through the idle frequency band. Compared with the prior art, the invention has the advantages of coherent spectrum use, high spectrum utilization rate, high spectrum sensing speed and the like.

The invention discloses a method, system and storage medium for constructing a 3D topology map of a rescue area. By dividing the observation area of ​​the rescue area into key areas and non-critical areas, a 3D panorama of fusion depth information of key areas in the rescue area and corresponding Based on the location information of the key area and the location information of the non-critical area, the spatial positions of the key area and the non-critical area are connected, and the key area is based on the location information of the non-critical area. The 3D panorama of the rescue area and the unidirectional images in the non-critical area build a 3D topological map of the rescue area. The invention makes 360-degree key observation on the key area of ​​the rescue site, so that the controller can fully understand the environment of the core area of ​​the rescue site, and then effectively formulate a rescue plan, and for the non-critical area connected to the key area, by collecting only one-way Image mode to reduce the viewing angle, thereby speeding up the speed of environmental perception.

The invention discloses a broadband compressed spectrum sensing method based on sub-band matching selection. In a spectrum sensing stage, a secondary user carries out compressed sampling to received analog signals through an analog information converter, thus obtaining few compressed sampling data; frequency domain sparsity signals corresponding to the signals obtained by carrying out Nyquist sampling to the analog signals are reconstructed through an iteration mode; then the secondary user judges the occupation state of each sub-band on the reconstructed frequency domain sparsity signals by an energy detection method; the method has the advantages that the single frequency point matching selection is changed into the sub-band matching selection; the sub-bands of a primary user can be determined; the iterations of the algorithms in the spectrum reconstruction can be greatly reduced; the spectrum reconstruction time is shortened; the residual errors are updated by a regularized least square method; therefore, the spectrum reconstruction accuracy and robustness can be further improved; and the broadband spectrum sensing performance is improved.