Abstract:
This application provides an antenna module and a base station system. The antenna module may transmit an electromagnetic wave of a specific frequency band. The base station system includes: a signal tower, a first antenna module, and a second antenna module. The first antenna module and the second antenna module are separately fixed at the signal tower, and share a same antenna installation platform on the signal tower; a distance between a center point of the first antenna module and the signal tower is less than a distance between a center point of the second antenna module and the signal tower. The solutions in this application can enable the base station system to implement multi-band coverage. The antenna module in the system can operate independently without affecting each other, and can be mounted and disassembled separately.
Abstract:
A method and an apparatus for transmitting control information are disclosed. The method includes: grouping UEs in a cell, and obtaining second control information of each UE group after grouping; performing joint channel coding on the second control information of each UE group; obtaining first control information, and transmitting the first control information to the UEs in the cell, where the first control information includes indication information of the second control information, on which joint channel coding has been performed, of each UE group, so as to obtain the second control information according to the indication information; and transmitting the second control information, on which joint channel coding has been performed, of each UE group to the UEs in the cell.
Abstract:
The technology of this application relates to a terminal device configured to receive a first message from a first access network device, where the first message is used by the terminal device to obtain a timing advance (TA) of the terminal device in a target cell, and the target cell is not a cell currently accessed by the terminal device. The terminal device is configured to send a second message to the first access network device, where the second message indicates that the terminal device has completed configuration of the target cell. In embodiments of this application, the terminal device is configured to receive the first message from the first access network device.
Abstract:
A base station includes multiple edge nodes and a central node. The edge nodes are configured to perform communication with a user equipment, and execute baseband processing and mutual conversion between baseband data and radio data, in which the multiple edge nodes belong to one or more edge node groups, and each edge node group includes at least one edge node. The central node is configured to perform communication with the multiple edge nodes, manage the multiple edge nodes, and perform resource sharing so that resources are shared by the multiple edge nodes. The base station is divided into two levels of architecture, namely, a central node and an edge node, and the central node implements resource sharing so that resources are shared by the edge nodes, so that a resource sharing degree in the base station is enhanced.
Abstract:
This application provides a downlink transmitting system and a switching method. The downlink transmitting system includes at least one digital intermediate frequency module group, at least one Tx port group, a plurality of PAs, at least one switching switch, and an antenna array. The plurality of PAs are connected to the antenna array. The plurality of PAs are connected to all Tx ports included in the downlink transmitting system in a one-to-one correspondence. The at least one digital intermediate frequency module group is in a one-to-one correspondence with the at least one Tx port group. Each Tx port group is connected to each digital intermediate frequency module in a corresponding digital intermediate frequency module group through one switching switch. Each Tx port group includes a plurality of Tx ports.
Abstract:
A method includes: a transmit end transmits at least two mixed pilot signals to a receive end separately by using at least two physical antennas. The at least two mixed pilot signals are separately obtained after preset pilot signals corresponding to logical antennas in the at least two logical antennas are weighted by using a precoding weight matrix. The transmit sends a first codebook subset restriction instruction to the receive end. The first codebook subset restriction instruction carries a rank indication RANK and at least one precoding matrix index PMI. The transmit end receives a channel quality feedback message that is fed back by the receive end according to downlink channel quality of an equivalent channel of a specified antenna. Accordingly, a suitable serving antenna is selected for a receive end, thereby improving signal quality.
Abstract:
A user equipment, UE (4), registered with an anchor cell base station (3-0) of an anchor cell (2-0) of a cellular wireless network (1), the UE (4) comprising a determination unit being adapted to predict an inter cell interference, ICI, at the UE (4), caused by base stations (3-1 to 3-6) of neighbouring cells (2-1 to 2-6), depending on precoding matrix indicators, PMIs, of precoding matrices, PMs, the PMIs being exchanged between the anchor cell base station (3-0) of the anchor cell (2-0) and the base stations (3-1 to 3-6) of the neighbouring cells (2-1 to 2-6).
Abstract:
Embodiments of the present invention disclose a method and a base station for coordinating cell interference. The method includes: receiving each backhaul signal transmitted by each cooperative base station, where the backhaul signal is determined by the cooperative base station according to strength of a signal received from a served user and strength of a signal received by a serving base station from an interfering user in the cooperative base station; and combining, at different stages of baseband processing and according to a type of each backhaul signal, a backhaul signal of a corresponding type and a user signal received from each user. An embodiment of the present invention further provides a base station. According to the embodiments of the present invention, backhaul transmission capacity is maximally utilized, backhaul transmission efficiency is improved, and relatively high performance is obtained.
Abstract:
A downlink transmission method, an apparatus, and a system, are provided to improve coverage of different types of information. The method includes: determining a radio frame, where the radio frame includes at least two of a first subframe, a second subframe, and a third subframe, the first subframe includes a first symbol, the second subframe includes a second symbol, the third subframe includes the first symbol and the second symbol, a bandwidth of the first symbol is a first bandwidth, a bandwidth of the second symbol is a second bandwidth, and the first bandwidth is less than the second bandwidth; and performing downlink transmission based on the radio frame. It may be learned from the foregoing descriptions that, the radio frame includes both the first symbol having a relatively low bandwidth and the second symbol having a relatively high bandwidth.
Abstract:
An antenna system and a signal transmission method are provided. The antenna system includes: an antenna array and a matching network, where an S parameter matrix of the matching network matches an S parameter matrix of the antenna array and the matching network is configured to perform pre-distortion on a to-be-transmitted signal or de-distortion on a received signal, and the antenna array is configured to transmit the pre-distorted to-be-transmitted signal. According to the antenna system and the signal transmission method provided in this application, pre-distortion may be performed on a signal that needs to be transmitted by the antenna array or de-distortion may be performed on a signal received by the antenna array, so as to configure energy that is coupled from each antenna array element to an adjacent antenna array element, thereby reducing a coupling effect between antenna array elements.