Abstract: A broadband Doherty power amplifier is provided, which includes a power divider, a carrier power amplifier circuit, a peak power amplifier circuit, and a load modulation network. The carrier power amplifier circuit includes a carrier input matching circuit, a carrier power amplifier, and a carrier output matching circuit. The peak power amplifier circuit includes a peak input matching circuit, a peak power amplifier and a peak output matching circuit. A resistance value of a system load is ZL. An output impedance of the carrier output matching circuit is Zm and meets Zm=ZL(n+ 1). An output impedance of the peak output matching circuit is Zp and meets Zp ZL(n+1)/n. The load modulation network is configured to set an impedance of a combination point to be ZQ, whose resistance value is ZL. A method of implementing a broadband Doherty power amplifier is further provided.

Abstract: The present invention discloses a message transmission method, a message transmission device, and a message transmission system. In an embodiment of the present invention, a message transmission device is provided. When a message is transmitted to the device, the device is responsible for message parsing, routing, and sending. In the case of communication between processes on the same communication node, the device communicates in shared memory mode; in the case of communication between processes in different hosts, the device establishes a TCP channel and communicates with TCP protocol. In addition, the present invention also provides a method and a system for message communication, which utilize the same idea to solve the problem of low efficiency of communication between processes. In conclusion, with the present invention, working efficiency of process and communication quality may be improved.

Abstract: A system, an apparatus, and a method for upgrading a service are provided herein. The method includes: loading and registering the upgraded new service version, and retaining the service of the old version; receiving a service processing request, and sending the received service processing request to the service processing device which is loaded with the service version corresponding to the service processing request according to the stored mapping relation between the service processing request and the information about the version of the service. In this way, the data loss is reduced or avoided in the service upgrade process, and the service works normally after the upgrade.

Abstract: A method for implementing an active/standby switchover includes: sending received data to an active device corresponding to a physical IP address in a mapping relation with a preset communication identification (ID); changing the physical IP address of the active device in the mapping relation with the communication ID to the physical IP address of a standby device for switchover when determining that the system needs to perform the active/standby switchover; sending the received data to the standby device corresponding to the physical IP address in the mapping relation with the preset communication ID after the system performs the active/standby switchover. A system and device for implementing an active/standby switchover are also disclosed. With the method, system, and device provided by the present invention, a long interruption of ongoing services is prevented when the active/standby switchover is performed.

Abstract: The present invention discloses a message transmission method, a message transmission device, and a message transmission system. In an embodiment of the present invention, a message transmission device is provided. When a message is transmitted to the device, the device is responsible for message parsing, routing, and sending. In the case of communication between processes on the same communication node, the device communicates in shared memory mode; in the case of communication between processes in different hosts, the device establishes a TCP channel and communicates with TCP protocol. In addition, the present invention also provides a method and a system for message communication, which utilize the same idea to solve the problem of low efficiency of communication between processes. In conclusion, with the present invention, working efficiency of process and communication quality may be improved.