Abstract: Embodiments of the present invention provide a traffic control method and an apparatus. The method includes: obtaining, by a server, a traffic flow of a road; adjusting, by the server, a lane quantity or a lane width of the road at a lane layer on a map according to the traffic flow of the road; and sending, by the server, a lane layer obtained after the adjustment, so that a vehicle running on the road runs according to a lane obtained after the adjustment. In the embodiments of the present invention, the traffic flow of the road is obtained, and the lane quantity or the lane width of the road is adjusted at the lane layer on the map according to the traffic flow of the road, so that the vehicle running on the road can run according to the lane obtained after the adjustment.

Abstract: This application provides a communications method and device. The communications method includes: determining a first frequency band and a second frequency band in an operating frequency band; and transmitting a first-type frame in the first frequency band, and transmitting a second-type frame in the second frequency band, where the first-type frame is used to carry a first-type service, the second-type frame is used to carry a second-type service, and the second-type frame and the first-type frame have different frame structures. Therefore, in embodiments of the present application, different frame structures are used in different frequency bands in the operating frequency band, and different services are carried by using the different frame structures, thereby meeting transmission requirements of different types of services.

Abstract: A positioning method and a device includes detecting, by a first device using a sensor, a target object that occurs within a range detectable to the sensor; and performing, by the first device in response to detecting any target object, each of determining relative location information of the first device relative to the target object according to a detection signal, determining absolute location information of the target object according to the relative location information and prestored absolute location information of the first device, and sending, using a wireless network, the absolute location information of the target object to a second device disposed on the target object.

Abstract: This application relates to the field of communications technologies and discloses a positioning method and a device, so as to improve operability of positioning when there is no GPS signal. The method includes: detecting, by a first device by using a sensor, a target object that occurs within a range detectable to the sensor; and performing, by the first device, the following operations when the sensor detects any target object: determining relative location information of the first device relative to the target object according to a detection signal that is obtained when the sensor detects the target object, determining absolute location information of the target object according to the relative location information and prestored absolute location information of the first device, and sending, by using a wireless network, the absolute location information of the target object to a second device disposed on the target object.

Abstract: This application provides a communications method and device. The communications method includes: determining a first frequency band and a second frequency band in an operating frequency band; and transmitting a first-type frame in the first frequency band, and transmitting a second-type frame in the second frequency band, where the first-type frame is used to carry a first-type service, the second-type frame is used to carry a second-type service, and the second-type frame and the first-type frame have different frame structures. Therefore, in embodiments of the present application, different frame structures are used in different frequency bands in the operating frequency band, and different services are carried by using the different frame structures, thereby meeting transmission requirements of different types of services.

Abstract: Embodiments of the present invention provide a traffic control method and an apparatus. The method includes: obtaining, by a server, a traffic flow of a road; adjusting, by the server, a lane quantity or a lane width of the road at a lane layer on a map according to the traffic flow of the road; and sending, by the server, a lane layer obtained after the adjustment, so that a vehicle running on the road runs according to a lane obtained after the adjustment. In the embodiments of the present invention, the traffic flow of the road is obtained, and the lane quantity or the lane width of the road is adjusted at the lane layer on the map according to the traffic flow of the road, so that the vehicle running on the road can run according to the lane obtained after the adjustment.

Abstract: Embodiments of the present invention disclose a method and an apparatus for transmitting information in a power communications system, and a system. The method is applied to a power communications system that uses at least two frequency bands for wireless communication, frequency band licensing statuses of the at least two frequency bands are different, and the method includes: determining a target frequency band from the at least two frequency bands based on an information type of to-be-sent information and a correspondence between the information type and a frequency band; and sending the to-be-sent information by using the target frequency band.

Abstract: An information transmission system includes a power system control center, a network device, a transmission device, and at least one system terminal. The network device belongs to a wide area network. Some or all system terminals of the at least one system terminal are configured to send at least one first report message to the transmission device, where the at least one first report message is transmitted using a first network transmission protocol. The transmission device is configured to send at least one second report message to the power system control center using the network device based on information in the at least one first report message, where the at least one second report message is transmitted using a second network transmission protocol different from the first network protocol.