Abstract:
A radio over fiber (RoF) system and a nonlinear compensation method, where the RoF system includes a BBU and an RRU, the RRU includes an electrical component, and the BBU includes a downlink and a feedback link. A predistortion module and an optical component are disposed on the downlink, an input end of the feedback link is connected to an output end of the optical component, and the feedback link is configured to feed back, to the predistortion module, a nonlinear signal output by the optical component. The RoF system further includes a temperature detection module configured to detect a temperature value of the electrical component, and transmit the temperature value to the predistortion module. The predistortion module is configured to perform digital predistortion DPD on a baseband signal based on the temperature value and the nonlinear signal.
Abstract:
A communication method includes obtaining, by a first device, first target information, determining, by the first device based on the first target information, a data transmit array element from light emitting diodes (LEDs) of the first device, where each data transmit array element of the first device includes at least one LED, and sending, by the first device, to-be-sent data to a data receive array element of a second device using the data transmit array element, where each data receive array element of the second device includes at least one LED of the second device.
Abstract:
A data transmission method and a communications device, the method including: determining, by a first communications device, a target data transmission mode, where the target data transmission mode is used to indicate a quantity of times that the first communications device transmits an encoded-bit combination to a second communications device and an encoded-bit combination transmitted each time, the encoded-bit combination transmitted each time may include one encoded bit sequence or a plurality of encoded bit sequences, where the encoded bit sequence is obtained by encoding all or some of K information bits, and K is a positive integer, and sending, by the first communications device, the encoded-bit combination to the second communications device in the target data transmission mode, and receiving, by the second communications device, the encoded-bit combination sent by the first communications device, and decoding the encoded bit sequence included in the encoded-bit combination.
Abstract:
Embodiments of the present invention disclose a road condition information sharing method. The method includes: receiving, by a server, a road condition information request sent by a first terminal, where the road condition information request carries a road condition position of concern; determining, by the server, a second terminal according to the road condition position of concern, where the second terminal has a road condition recording capability, and a distance between the second terminal and the road condition position of concern is less than a preset threshold; and sending, by the server, a road condition sharing request to the second terminal, so that the second terminal shares a road condition according to the road condition position of concern.
Abstract:
A call processing method, including receiving a first call request of a calling terminal for a called terminal, triggering a mobility management entity to control a base station to page the called terminal, performing call waiting according to a paging response message when receiving the paging response message from the mobility management entity indicating that the called terminal is a power saving state and cannot be paged by the base station, and establishing a session coupling between the calling terminal and the called terminal according to addressing information of the called terminal when receiving, in a call waiting process, the addressing information of the called terminal from the mobility management entity.
Abstract:
A small-cell subscriber management method includes receiving, by a terminal, a closed subscriber group (CSG) identity broadcast by a small cell, determining whether the CSG identity is in a CSG identity list stored by the terminal, sending, by the terminal, an access request to the small cell when the CSG identity is in the CSG identity list, requesting, by the terminal after successfully accessing the small cell, a current CSG subscriber list of the small cell from the small cell, managing, by the terminal after receiving the current CSG subscriber list of the small cell, the current CSG subscriber list of the small cell, where a management includes adding a subscriber to, removing a subscriber from, or changing a subscriber in the current CSG subscriber list. According to the foregoing method, a management terminal is used to manage the CSG subscriber list to implement convenient management of a small cell.
Abstract:
Embodiments of the present invention provide a method and a device for processing interference, wherein according to a first demodulation reference signal DMRS pilot symbol carried by a first subcarrier used by an uplink user equipment, an interference channel matrix of an uplink interference channel from the uplink user equipment to a D2D receiving end is measured, wherein the first subcarrier is a subcarrier shared by a D2D transmitting end and the uplink user equipment; a null space matrix of the uplink interference channel is calculated according to the interference channel matrix; and the signal received by the D2D receiving end via the first subcarrier is processed by using the null space matrix to eliminate an interference signal which comes from the uplink user equipment in the signal.
Abstract:
A femtocell subscriber includes: receiving, by a femtocell, an access request sent by an access terminal, where the access request carries IMSI information of the access terminal; determining, by the femtocell, whether an international mobile subscriber identity IMSI of the access terminal is in a CSG subscriber list of the femtocell; if the access terminal is in the closed subscriber group CSG subscriber list, allowing the access terminal to access the femtocell; or if the IMSI of the access terminal is not in the CSG subscriber list of the femtocell, obtaining, by the femtocell from a server, a mobile phone number corresponding to the IMSI; if the mobile phone number of the access terminal is not in the CSG subscriber list of the femtocell, requesting, by the femtocell, a management terminal to determine whether to allow the access terminal to access the femtocell.
Abstract:
A method for controlling an intelligent wearable device, including generating, by a terminal device, a first power-off instruction, where the first power-off instruction is used to instruct the terminal device to power off; before the terminal device powers off, generating, by the terminal device, a second power-off instruction and sending the second power-off instruction to the intelligent wearable device associated with the terminal device, where the second power-off instruction is used to instruct the intelligent wearable device to power off or disable a communications module of the intelligent wearable device. By using the technical solutions provided in the embodiments of the present disclosure, power consumption of the intelligent wearable device can be reduced. In addition, the embodiments of the present disclosure further provide a corresponding apparatus and system.
Abstract:
The present invention provides a D2D communication method and a D2D communication device. The method includes: determining a second time slot for transmitting D2D data according to a first time slot for transmitting D2D signaling to a D2D receiver and a synchronous transmission relationship between the D2D signaling and the D2D data, the second time slot being after the first time slot; determining a third time slot for transmitting uplink control information in cellular communication according to the second time slot, the uplink control information being used for indicating an uplink radio resource in the second time slot, and the third time slot being before the second time slot; demodulating the uplink control information in the third time slot to acquire the uplink radio resource in the second time slot; multiplexing the uplink radio resource in the second time slot to perform D2D communication with the D2D receiver.