Abstract: A user equipment (UE) measures one or more reference signals received from a base station to estimate a set of parameters that characterize a wireless channel between the UE and the base station. The set of parameters includes at least a respective departure angle associated with each path of a plurality of paths of the wireless channel. The UE transmits the set of parameters to the base station to enable the base station to facilitate beamforming strategies to enhance signal quality at the UE based on at least one of a channel matrix and a transmit covariance matrix associated with the wireless channel. The channel matrix and transmit covariance matrix are represented by the set of parameters.

Abstract: A method, applied in an apparatus and computer readable storage medium, for establishing location of a target terminal in an obstructed environment comprises determining, based on indoor environmental information and data observed by a plurality of base stations in communication with the terminal, establishes lines of signals from the terminal scattered by local obstructions, and based on positional information as to the obstructions which cause the scattering, estimating a more precise positional information of the terminal.

Abstract: A method, applied in an apparatus and computer readable storage medium, for establishing location of a target terminal in an obstructed environment comprises determining, based on indoor environmental information and data observed by a plurality of base stations in communication with the terminal, establishes lines of signals from the terminal scattered by local obstructions, and based on positional information as to the obstructions which cause the scattering, estimating a more precise positional information of the terminal.

Abstract: A six-needle eight-thread stitch configuration includes six rows of threads (21-26) sewn to two adjoining portions (13, 14) respectively of two fabrics (11, 12). Each row of threads (21-26) tightens a top thread (3; 3?) and a bottom thread (4; 4?) respectively and extending sinuously on upper and lower sides of each adjoining portion (13, 14). Each row of threads (21-26) includes a plurality of upper loops (27) and a plurality of lower loops (28) respectively on the upper and lower sides of the adjoining portions (13, 14). The top thread (3; 3?) extends through the upper loops (27) of each row of threads (21-26) and is fixed to the upper sides of the fabrics (11, 12). The lower thread (4; 4?) extends through the lower loops (28) of each row of threads (21-26) and is fixed to the lower sides of the fabrics (11, 12).