Abstract: A method for configuring and updating random access resources in a multi-antenna multiple-input multiple-output (MIMO) environment is provided, including: initializing a base station; broadcasting, by the base station, the available RACH resources using an SIB2; initiating, by users who have data to be sent in an uplink, random access processes on the RACH resources configured by the base station; and redefining an S state, an I state, and a C state. Configuration of the RACH resources may be gradually and dynamically optimized according to the quantity of antennas of the base station and a utilization rate threshold of the RACH resources, so that waste of random access RACH resources is reduced provided that an MIMO system meets a required user/service access success probability; a utilization of the resources is improved by fully utilizing spatial diversity characteristics of the MIMO system.

Abstract: An indication to remove one or more data in a time series database is received. A metadata index associated with the time series database is updated to indicate a soft removal of each data of the one or more data. A data hole index associated with the time series database is updated to indicate a data hole at a location of each data of the one or more data in the time series database. Responsive to an input/output rate for the time series database being below a threshold, the data hole of each data of the one or more data is optimized.

Abstract: A self-adjusting hydraulic static penetrating device and method suitable for a seabed slope area is provided. The device includes an upper adjustable injection platform and a lower adjustable supporting platform. The upper adjustable injection platform is fixedly connected with the upper surface of the lower adjustable supporting platform. The upper adjustable injection platform includes a rack, a control cabin, an injection mechanism, a hydraulic station, a balance weight and first jacks. The control cabin, the injection mechanism, the hydraulic station, the balance weight and the first jacks are all arranged on the rack. The four first jacks are installed at the bottom of a steel structure frame, and the first jacks are fixed to the lower adjustable supporting platform. The device is simple in structure and low in cost, and can guarantee, to the maximum extent, that the overall gravity center of the device is always constant or slightly changes.