Abstract: The present disclosure discloses a communication method and device in the field of communication technology. The method includes: transmitting at least one level information of the UE to a base station, the level information being used for indicating a transmission rate of the UE for communication, when a first service is triggered, querying first level information corresponding to the first service in a corresponding relationship between the service and the level information of the UE, and if the at least one level information comprises the first level information, transmitting a first service request to the base station at a transmission rate indicated by the first level information, the first service request being used for requesting the base station to communicate with the UE for the first service according to the transmission rate indicated by the first level information.

Abstract: Methods and apparatus relate to a bidirectional differential interface having a voltage-mode transmit driver architecture formed of multiple selectively enabled slices for coarse output resistance impedance matching. In an illustrative example, the transmit driver may include a programmable resistance for fine-tuning to impedance match the output resistance for transmit operation. During receive operation, protective voltage may be proactively applied to gates of drive transistors, for example, to minimize voltage stresses applied by external signal sources. Some implementations may automatically float the sources of the drive transistors, for example, to prevent back-feeding externally driven signal currents during receive mode operations. The transmit driver may have programmable voltage swing on, for example, the upper and/or lower bounds to enhance compatibility. A programmable common mode voltage node may be selectively applied, for example, through common mode resistors for receive mode operations.

Abstract: The present disclosure discloses a communication method and device in the field of communication technology. The method includes: transmitting at least one level information of the UE to a base station, the level information being used for indicating a transmission rate of the UE for communication, when a first service is triggered, querying first level information corresponding to the first service in a corresponding relationship between the service and the level information of the UE, and if the at least one level information comprises the first level information, transmitting a first service request to the base station at a transmission rate indicated by the first level information, the first service request being used for requesting the base station to communicate with the UE for the first service according to the transmission rate indicated by the first level information.