Abstract:
Embodiments provide a signal transmission apparatus and a downlink signal transmission method. A downlink common channel signal that needs to be sent by using a wide beam is divided into multiple groups of grouped signals; for each group of grouped signals, signal weighting is separately performed on different radio frequency paths in a multi-antenna system; weighted grouped signals are combined to obtain a weighted downlink common channel signal; and the weighted downlink common channel signal is transmitted.
Abstract:
Embodiments of the present disclosure provide a base station and a beam forming method. The method includes: determining, according to uplink sounding signals separately received using m beams, an uplink receive power of each beam in the m beams, where m is a positive integer greater than 2; selecting n beams from the m beams according to the uplink receive power of each beam in the m beams, where 2≤n
Abstract:
Embodiments of the present invent provide a method for selecting a pre-coding matrix indication, an apparatus and a system. In embodiments the method includes sending, by a base station, indication information to a terminal, wherein the indication information is used to instruct the terminal to send uplink data without weighting the uplink data or after weighting the uplink data by using an identity matrix and receiving, by the base station, the uplink data sent by the terminal. The method further includes selecting, by the base station, a first pre-coding matrix indication (PMI) from a pre-coding matrix indication set of the base station according to the uplink data and sending the first PMI to the terminal.
Abstract:
Embodiments of the present disclosure provide a base station and a beam forming method. The method includes: determining, according to uplink sounding signals separately received using m beams, an uplink receive power of each beam in the m beams, where m is a positive integer greater than 2; selecting n beams from the m beams according to the uplink receive power of each beam in the m beams, where 2≦n
Abstract:
Embodiments of the present invent provide a method for selecting a pre-coding matrix indication, an apparatus and a system. In embodiments the method includes sending, by a base station, indication information to a terminal, wherein the indication information is used to instruct the terminal to send uplink data without weighting the uplink data or after weighting the uplink data by using an identity matrix and receiving, by the base station, the uplink data sent by the terminal. The method further includes selecting, by the base station, a first pre-coding matrix indication (PMI) from a pre-coding matrix indication set of the base station according to the uplink data and sending the first PMI to the terminal.
Abstract:
Embodiments of the present invention provide a signal transmission method, apparatus, and base station. The method includes: sending downlink signals through N sectors, where the N sectors are created by using M sectors used to receive uplink signals, and N>M. In the embodiments of the present invention, the base station creates N sectors by using M sectors used to receive uplink signals and sends downlink signals through the N sectors, so that the multi-sector technology is mainly used in the downlink and the multi-antenna technology is mainly used in the uplink. This may resolve an existing conflict between the uplink and the downlink when system capacity is being improved, thereby improving system capacity of a wireless communication network.
Abstract:
A method and an apparatus for balancing power between antennas, and a base station are provided. The method includes multiplying n virtual antenna signals by an orthogonal matrix to obtain n intermediate regulative signals; and using a corresponding rotary phase to rotate phases of m of the n intermediate regulative signals, so that a phase difference exists between at least two of n physical antenna signals output by antennas.
Abstract:
A communication method, a base station, and user equipment are provided. The method includes: forming m beams by using a manner of antenna weighting, where m is a positive integer greater than 1; determining an uplink receive power of each beam according to an uplink sounding signal of UE; selecting n beams from the m beams according to the uplink receive power of each beam, where n is a positive integer, and n
Abstract:
Embodiments provide a signal transmission apparatus and a downlink signal transmission method. A downlink common channel signal that needs to be sent by using a wide beam is divided into multiple groups of grouped signals; for each group of grouped signals, signal weighting is separately performed on different radio frequency paths in a multi-antenna system; weighted grouped signals are combined to obtain a weighted downlink common channel signal; and the weighted downlink common channel signal is transmitted.
Abstract:
A method and an apparatus for balancing power between antennas, and a base station are provided. The method includes multiplying n virtual antenna signals by an orthogonal matrix to obtain n intermediate regulative signals; and using a corresponding rotary phase to rotate phases of m of the n intermediate regulative signals, so that a phase difference exists between at least two of n physical antenna signals output by antennas.