Abstract: Example access network devices are described. One example access network device includes a signal processing apparatus. The signal processing apparatus includes a first power amplifier, a second power amplifier, a first filter, a second filter, and a combiner. The first filter filters a second signal obtained by the first power amplifier, to obtain a first sub-signal belonging to a first frequency band and a second sub-signal belonging to a second frequency band. The second filter filters a fourth signal obtained by the second power amplifier, to obtain n sub-signals including at least a third sub-signal belonging to a third frequency band. The combiner combines the first sub-signal and i sub-signals in the n sub-signals based on a preset condition, to obtain a first combined signal. The communication module sends the first combined signal by using a first port, and sends the second sub-signal by using a second port.

Abstract: Embodiments of this application provide antenna switching methods and apparatuses. In an implementation, a first communication device determines a first antenna identifier based on air interface transmission information, the first communication device sends the first antenna identifier to a digital switch, and the digital switch switches from a second switch state to a first switch state based on the first antenna identifier, where the first switch state indicates that a second communication device communicates with the first antenna within a first time unit, and the second switch state indicates that the second communication device communicates with a second antenna within a second time unit.

Abstract: Example access network devices are described. One example access network device includes a signal processing apparatus. The signal processing apparatus includes a first power amplifier, a second power amplifier, a first filter, a second filter, and a combiner. The first filter filters a second signal obtained by the first power amplifier, to obtain a first sub-signal belonging to a first frequency band and a second sub-signal belonging to a second frequency band. The second filter filters a fourth signal obtained by the second power amplifier, to obtain n sub-signals including at least a third sub-signal belonging to a third frequency band. The combiner combines the first sub-signal and i sub-signals in the n sub-signals based on a preset condition, to obtain a first combined signal. The communication module sends the first combined signal by using a first port, and sends the second sub-signal by using a second port.

Abstract: Example signal processing methods and apparatus are described. The signal processing apparatus includes a first power amplifier, a second power amplifier, a first filter, a second filter, and a combiner. The first filter filters a second signal obtained by the first power amplifier to obtain a first sub-signal belonging to a first frequency band and a second sub-signal belonging to a second frequency band. The second filter filters a fourth signal obtained by the second power amplifier to obtain n sub-signals including at least a third sub-signal belonging to a third frequency band. The combiner combines the first sub-signal and i sub-signals in the n sub-signals based on a preset condition to obtain a first combined signal. The communication module sends the first combined signal by using a first port, and sends the second sub-signal by using a second port.

Abstract: Example signal processing methods and apparatus are described. The signal processing apparatus includes a first power amplifier, a second power amplifier, a first filter, a second filter, and a combiner. The first filter filters a second signal obtained by the first power amplifier to obtain a first sub-signal belonging to a first frequency band and a second sub-signal belonging to a second frequency band. The second filter filters a fourth signal obtained by the second power amplifier to obtain n sub-signals including at least a third sub-signal belonging to a third frequency band. The combiner combines the first sub-signal and i sub-signals in the n sub-signals based on a preset condition to obtain a first combined signal. The communication module sends the first combined signal by using a first port, and sends the second sub-signal by using a second port.

Abstract: An example remote radio apparatus is provided, including a body, a mainboard, a mainboard heat sink, a maintenance cavity, an optical module, and an optical module heat sink. The maintenance cavity and the optical module heat sink are integrally connected, while the optical module is mounted on a bottom surface of the optical module heat sink. The maintenance cavity and the optical module heat sink are mounted on a side surface of the body, and the mainboard heat sink is mounted on and covers the mainboard. The mainboard heat sink and the mainboard are installed on a front surface of the body, and the mainboard heat sink and the optical module heat sink are spaced by a preset distance. The temperature of the optical module is controlled within a range required by a specification.

Abstract: An example remote radio apparatus is provided, including a body, a mainboard, a mainboard heat sink, a maintenance cavity, an optical module, and an optical module heat sink. The maintenance cavity and the optical module heat sink are integrally connected, while the optical module is mounted on a bottom surface of the optical module heat sink. The maintenance cavity and the optical module heat sink are mounted on a side surface of the body, and the mainboard heat sink is mounted on and covers the mainboard. The mainboard heat sink and the mainboard are installed on a front surface of the body, and the mainboard heat sink and the optical module heat sink are spaced by a preset distance. The temperature of the optical module is controlled within a range required by a specification.

Abstract: An example remote radio apparatus is provided, including a body, a mainboard, a mainboard heat sink, a maintenance cavity, an optical module, and an optical module heat sink. The maintenance cavity and the optical module heat sink are integrally connected, while the optical module is mounted on a bottom surface of the optical module heat sink. The maintenance cavity and the optical module heat sink are mounted on a side surface of the body, and the mainboard heat sink is mounted on and covers the mainboard. The mainboard heat sink and the mainboard are installed on a front surface of the body, and the mainboard heat sink and the optical module heat sink are spaced by a preset distance. The temperature of the optical module is controlled within a range required by a specification.

Abstract: Embodiments of the present disclosure disclose a radio remote unit, a receiver, and a base station. The radio remote unit includes at least one receive channel pair, a first local oscillator module, a second local oscillator module, a local oscillator switching switch, and a controller. Each receive channel pair includes a first receive channel and a second receive channel. Each receive channel in each receive channel pair includes a filtering module, a frequency mixing module connected to the filtering module, and a digital processing module connected to the frequency mixing module. A frequency mixing module on the second receive channel is connected to the first local oscillator module and the second local oscillator module by the local oscillator switching switch. The controller is configured to receive an operating mode that is sent by a base station, and control the local oscillator switching switch to perform switching.

Abstract: An example remote radio apparatus is provided, including a body, a mainboard, a mainboard heat sink, a maintenance cavity, an optical module, and an optical module heat sink. The maintenance cavity and the optical module heat sink are integrally connected, while the optical module is mounted on a bottom surface of the optical module heat sink. The maintenance cavity and the optical module heat sink are mounted on a side surface of the body, and the mainboard heat sink is mounted on and covers the mainboard. The mainboard heat sink and the mainboard are installed on a front surface of the body, and the mainboard heat sink and the optical module heat sink are spaced by a preset distance. The temperature of the optical module is controlled within a range required by a specification.

Abstract: Embodiments of the present disclosure disclose a radio remote unit, a receiver, and a base station. The radio remote unit includes at least one receive channel pair, a first local oscillator module, a second local oscillator module, a local oscillator switching switch, and a controller. Each receive channel pair includes a first receive channel and a second receive channel. Each receive channel in each receive channel pair includes a filtering module, a frequency mixing module connected to the filtering module, and a digital processing module connected to the frequency mixing module. A frequency mixing module on the second receive channel is connected to the first local oscillator module and the second local oscillator module by the local oscillator switching switch. The controller is configured to receive an operating mode that is sent by a base station, and control the local oscillator switching switch to perform switching.

Abstract: Embodiments of the present invention relate to an RRU device and an assembly thereof. The RRU device includes: an enclosure, where the enclosure includes a front-end plate and a back-end plate that are respectively set on two lengthwise ends of the enclosure, multiple parallel spaced heat sinks are set on two widthwise sides of the enclosure and between the front-end plate and the back-end plate, and the front-end plate and the back-end plate extend along a widthwise direction of the enclosure by a length which is greater than a length by which the heat sinks extend; and a joint part set on the enclosure, where the joint part is used to fasten two side-by-side radio remote unit devices together.

Abstract: Embodiments of the present invention relate to an RRU device and an assembly thereof The RRU device includes: an enclosure, where the enclosure includes a front-end plate and a back-end plate that are respectively set on two lengthwise ends of the enclosure, multiple parallel spaced heat sinks are set on two widthwise sides of the enclosure and between the front-end plate and the back-end plate, and the front-end plate and the back-end plate extend along a widthwise direction of the enclosure by a length which is greater than a length by which the heat sinks extend; and a joint part set on the enclosure, where the joint part is used to fasten two side-by-side radio remote unit devices together.

Abstract: Embodiments of the present invention relate to an RRU device and an assembly thereof. The RRU device includes: an enclosure, where the enclosure includes a front-end plate and a back-end plate that are respectively set on two lengthwise ends of the enclosure, multiple parallel spaced heat sinks are set on two widthwise sides of the enclosure and between the front-end plate and the back-end plate, and the front-end plate and the back-end plate extend along a widthwise direction of the enclosure by a length which is greater than a length by which the heat sinks extend; and a joint part set on the enclosure, where the joint part is used to fasten two side-by-side radio remote unit devices together.

Abstract: Embodiments of the present invention relate to an RRU device and an assembly thereof. The RRU device includes: an enclosure, where the enclosure includes a front-end plate and a back-end plate that are respectively set on two lengthwise ends of the enclosure, multiple parallel spaced heat sinks are set on two widthwise sides of the enclosure and between the front-end plate and the back-end plate, and the front-end plate and the back-end plate extend along a widthwise direction of the enclosure by a length which is greater than a length by which the heat sinks extend; and a joint part set on the enclosure, where the joint part is used to fasten two side-by-side radio remote unit devices together.