Patent Application
20250167896
This application relates to the optical access field, and more specifically, to a signal amplification apparatus, an optical signal receiving apparatus, and a method.
A passive optical network (PON) is a communication network formed by connecting an optical line terminal (OLT) to a specific quantity of optical network terminals (ONT) or a plurality of optical network units (ONU) through an optical distribution network (ODN). As video services become basic services of broadband networks and PON technologies gradually develop from the home broadband field to the field of government and enterprise industry, for example, telemedicine, industrial intelligent manufacturing, and communication in factories and mines, a higher requirement is posed on a bandwidth. Currently, it is widely recognized to increase a bandwidth of a next-generation optical access network to 50 Gbps to gradually replace some 10GPON and GPON devices. Therefore, how to simply and efficiently implement smooth evolution of a system bandwidth becomes a research hotspot in the PON field.
This application provides a signal amplification apparatus, an optical signal receiving apparatus, and a method, to meet different performance requirements of both 50GPON and GPON.
According to a first aspect, an embodiment of this application provides a signal amplification apparatus. The apparatus includes a signal receiving unit, a channel selection unit, a first amplification and data recovery channel, and a second amplification and data recovery channel. The signal receiving unit is configured to receive a first signal, and output the first signal to the channel selection unit, where the first signal includes a first-rate signal and a second-rate signal. The channel selection unit is configured to connect the signal receiving unit to at least one of the first amplification and data recovery channel and the second amplification and data recovery channel, and transmit the first signal to the at least one of the first amplification and data recovery channel and the second amplification and data recovery channel. The first amplification and data recovery channel is configured to perform amplification and data recovery on the first signal transmitted to the first amplification and data recovery channel. The second amplification and data recovery channel is configured to perform amplification and data recovery on the first signal transmitted to the second amplification and data recovery channel.
For example, in embodiments of this application, the signal receiving unit may be a serial port configured to receive a signal.
For example, in embodiments of this application, the signal amplification apparatus may be an amplification apparatus, or may be a module in the amplification apparatus, or may be in a form of a chip. This is not limited in this application.
Based on the foregoing solution, the channel selection unit is connected to different amplification and data recovery channels, so that the multi-rate first signal may be transmitted to different amplification and data recovery channels. When the solution is applied to a multi-generation-coexistence PON system, first signals at different rates may be transmitted by multiplexing a same carrier. In other words, optical signals in a same band may be used on 50GPON and GPON carriers, so that a scenario in which 50GPON and GPON devices coexist in a system can be implemented without affecting system performance.
With reference to the first aspect, in some implementations of the first aspect, the signal receiving unit is specifically configured to receive the first-rate signal and the second-rate signal that arrive at different moments.
In other words, in this application, the first-rate signal and the second-rate signal in the first signal arrive at the signal receiving unit in a staggered manner according to a specific chronological.
With reference to the first aspect, in some implementations of the first aspect, the first amplification and data recovery channel is specifically configured to perform limiting amplification and data recovery on the first-rate signal. The second amplification and data recovery channel is specifically configured to perform linear amplification and data recovery on the second-rate signal.
With reference to the first aspect, in some implementations of the first aspect, the channel selection unit includes a control unit and a switching element. The control unit is configured to receive first control signaling, and control, based on the first control signaling, the switching element to connect the signal receiving unit to the first amplification and data recovery channel or the second amplification and data recovery channel. When the switching element connects the signal receiving unit to the first amplification and data recovery channel, the switching element is configured to transmit the first-rate signal to the first amplification and data recovery channel. When the switching element connects the signal receiving unit to the second amplification and data recovery channel, the switching element is configured to transmit the second-rate signal to the second amplification and data recovery channel.
Based on the foregoing solution, the first signal is transmitted to different amplification and data recovery channels through cooperation between the control unit and the switching element, so that the first signal can be amplified on an amplification and data recovery channel that rate-matches the first signal, thereby ensuring signal integrity during transmission, and further improving system performance.
With reference to the first aspect, in some implementations of the first aspect, the switching element includes a single-pole double-throw switch or a transistor.
For example, the single-pole double-throw switch is a “single-pole double-throw” high-speed electronic switch.
Channel switching for the first signal is implemented based on a common element like the single-pole double-throw switch or the transistor, so that network upgrade costs can be reduced.
With reference to the first aspect, in some implementations of the first aspect, the first control information is from a medium access control MAC.
For example, when the signal amplification apparatus is used in a receiver, because the MAC of a system may store a rate of an uplink time division multiplexing signal, the first control information is sent to the control unit based on an uplink time sequence stored in the MAC, and the channel selection unit is controlled, based on the first control information, to be connected to amplification and data recovery channels with different bandwidths, so that reliability of channel switching can be ensured, thereby ensuring stability of system performance.
With reference to the first aspect, in some implementations of the first aspect, the channel selection unit includes a mirroring module. The mirroring module is configured to mirror the first signal to obtain a second signal, and respectively transmit the first signal and the second signal to the first amplification and data recovery channel and the second amplification and data recovery channel.
Mirroring of the first signal is implemented based on a common mirroring circuit, so that network upgrade costs can be reduced. When this solution is applied to a scenario in which 50GPON and GPON coexist, even if a first signal at a specific rate is transmitted on each amplification and data recovery channel, the MAC may select, based on a time sequence, an amplification and data recovery channel that rate-matches the first signal for reception. Therefore, system performance can still be ensured.
With reference to the first aspect, in some implementations of the first aspect, the first amplification and data recovery channel is further configured to receive second control signaling, and determine an operating rate/operating bandwidth of the first amplification and data recovery channel based on the second control signaling. Alternatively, the second amplification and data recovery channel is further configured to receive second control signaling, and determine an operating rate/operating bandwidth of the second amplification and data recovery channel based on the second control signaling.
Based on this solution, an operating rate/operating bandwidth of an amplification and data recovery channel is controlled based on the second control signaling, so that one channel can correspond to a plurality of operating rates/operating bandwidths, and application requirements in different scenarios can be met based on flexible rate adjustment.
With reference to the first aspect, in some implementations of the first aspect, the second control information is from the medium access control MAC.
For example, when the signal amplification apparatus is used in a receiver, because the MAC may store a rate of an uplink time division multiplexing signal, the second control information is sent to an amplifier based on an uplink time sequence stored in the MAC, and the amplifier adjusts bandwidths of different amplification and data recovery channels based on the second control information, so that a signal-to-noise ratio existing after signal amplification can be ensured, thereby ensuring stability of system performance.
With reference to the first aspect, in some implementations of the first aspect, the apparatus includes M amplification and data recovery channels, rates of the first signal include N rates, the M amplification and data recovery channels correspond to the N rates, and each of the N rates corresponds to one of the M amplification and data recovery channels. The channel selection unit is configured to connect the signal receiving unit to an amplification and data recovery channel corresponding to a rate of the first signal. M and N are integers greater than or equal to 2.
Based on this solution, the multi-channel amplification apparatus provided in this application has a capability of performing amplification and data recovery on a multi-rate signal, so that application in a plurality of scenarios is implemented while system performance is ensured.
According to a second aspect, an embodiment of this application provides an optical signal receiving apparatus. The apparatus includes an optical signal receiving and converting unit, a channel selection unit, a first amplification and data recovery channel, and a second amplification and data recovery channel. The optical signal receiving and converting unit is configured to receive a first optical signal, convert the first optical signal into a first electrical signal, and output the first electrical signal to the channel selection unit, where the first optical signal includes a first-rate optical signal and a second-rate optical signal, the first-rate optical signal corresponds to a first-rate electrical signal, and the second-rate optical signal corresponds to a second-rate electrical signal. The channel selection unit is configured to connect the optical signal receiving and converting unit to at least one of the first amplification and data recovery channel and the second amplification and data recovery channel, and transmit the first electrical signal to the at least one of the first amplification and data recovery channel and the second amplification and data recovery channel. The first amplification and data recovery channel is configured to perform amplification and data recovery on the first electrical signal transmitted to the first amplification and data recovery channel. The second amplification and data recovery channel is configured to perform amplification and data recovery on the first electrical signal transmitted to the second amplification and data recovery channel.
For example, the optical signal receiving and converting unit may be an avalanche photodiode APD, or another element or chip configured to convert an optical signal into an electrical signal, and may convert the first optical signal into the first electrical signal by using an optical-to-electrical conversion chip.
With reference to the second aspect, in some implementations of the second aspect, the optical signal receiving and converting unit is specifically configured to receive the first-rate optical signal and the second-rate optical signal that arrive at different moments, convert the first-rate optical signal and the second-rate optical signal into the first-rate electrical signal and the second-rate electrical signal, and separately output the first-rate electrical signal and the second-rate electrical signal to the channel selection unit at different moments.
It should be understood that, in this application, a first-rate signal and a second-rate signal in the first optical signal and the first electrical signal arrive at the optical signal receiving and converting unit in a staggered manner according to a specific chronological.
With reference to the second aspect, in some implementations of the second aspect, the first amplification and data recovery channel is specifically configured to perform limiting amplification and data recovery on the first-rate electrical signal. The second amplification and data recovery channel is specifically configured to perform linear amplification and data recovery on the second-rate electrical signal.
With reference to the second aspect, in some implementations of the second aspect, the channel selection unit includes a control unit and a switching element. The control unit is configured to receive first control signaling, and control, based on the first control signaling, the switching element to connect the optical signal receiving and converting unit to the first amplification and data recovery channel or the second amplification and data recovery channel. When the switching element connects the optical signal receiving and converting unit to the first amplification and data recovery channel, the switching element is configured to transmit the first-rate electrical signal to the first amplification and data recovery channel. When the switching element connects the optical signal receiving and converting unit to the second amplification and data recovery channel, the switching element is configured to transmit the second-rate electrical signal to the second amplification and data recovery channel.
With reference to the second aspect, in some implementations of the second aspect, the switching element includes a single-pole double-throw switch or a transistor.
With reference to the second aspect, in some implementations of the second aspect, the first control information is from a medium access control MAC.
With reference to the second aspect, in some implementations of the second aspect, the channel selection unit includes a mirroring module. The mirroring module is configured to mirror the first electrical signal to obtain a second electrical signal, and respectively transmit the first electrical signal and the second electrical signal to the first amplification and data recovery channel and the second amplification and data recovery channel.
With reference to the second aspect, in some implementations of the second aspect, the first amplification and data recovery channel is further configured to receive second control signaling, and determine an operating rate/operating bandwidth of the first amplification and data recovery channel based on the second control signaling. Alternatively, the second amplification and data recovery channel is further configured to receive second control signaling, and determine an operating rate/operating bandwidth of the second amplification and data recovery channel based on the second control signaling.
With reference to the second aspect, in some implementations of the second aspect, the second control information is from the medium access control MAC.
With reference to the second aspect, in some implementations of the second aspect, the apparatus includes M amplification and data recovery channels, the first optical signal or the first electrical signal includes signals at N rates, the M amplification and data recovery channels correspond to the signals at the N rates, a signal at each of the N rates corresponds to one of the M amplification and data recovery channels, and the M amplification and data recovery channels include a limiting amplification and data recovery channel and a linear amplification and data recovery channel. The channel selection unit is configured to connect the optical signal receiving and converting unit to an amplification and data recovery channel corresponding to a rate of the first electrical signal. M and N are integers greater than or equal to 2.
According to a third aspect, an embodiment of this application provides a signal amplification method. The method includes: receiving a first signal, where the first signal includes a first-rate signal and a second-rate signal; transmitting the first signal to at least one of a first amplification and data recovery channel and a second amplification and data recovery channel; performing, by the first amplification and data recovery channel, amplification and data recovery on the first signal when the first signal is transmitted to the first amplification and data recovery channel; and performing, by the second amplification and data recovery channel, amplification and data recovery on the first signal when the first signal is transmitted to the second amplification and data recovery channel.
With reference to the third aspect, in some implementations of the third aspect, the receiving a first signal includes: receiving the first-rate signal and the second-rate signal that are at different moments.
With reference to the third aspect, in some implementations of the third aspect, the performing, by the first amplification and data recovery channel, amplification and data recovery on the first signal includes: performing, by the first amplification and data recovery channel, limiting amplification and data recovery on the first signal. The performing, by the second amplification and data recovery channel, amplification and data recovery on the first signal includes: performing, by the second amplification and data recovery channel, linear amplification and data recovery on the first signal.
With reference to the third aspect, in some implementations of the third aspect, the method further includes: receiving first control signaling; and transmitting the first signal to the first amplification and data recovery channel or the second amplification and data recovery channel based on the first control signaling.
With reference to the third aspect, in some implementations of the third aspect, the first control information is from a medium access control MAC.
With reference to the third aspect, in some implementations of the third aspect, the method further includes: mirroring the first signal to obtain a second signal; and respectively transmitting the first signal and the second signal to the first amplification and data recovery channel and the second amplification and data recovery channel.
With reference to the third aspect, in some implementations of the third aspect, the method further includes: receiving second control signaling; and determining an operating rate/operating bandwidth of the first amplification and data recovery channel or the second amplification and data recovery channel based on the second control signaling.
With reference to the third aspect, in some implementations of the third aspect, the second control information is from the medium access control MAC.
With reference to the third aspect, in some implementations of the third aspect, rates of the first signal include N rates, the N rates correspond to M amplification and data recovery channels, each of the N rates corresponds to one of the M channels, and M and N are integers greater than or equal to 2. The first signal is transmitted to a channel corresponding to a rate of the first signal.
According to a fourth aspect, an embodiment of this application provides a passive optical network system. The system includes an optical line terminal OLT and a plurality of optical network units ONUs, the OLT and the ONUs communicate through at least one downlink wavelength channel and one uplink wavelength channel, the uplink wavelength channel is used to transmit a first signal, and the OLT is configured to perform the method provided in any one of the third aspect or the implementations of the third aspect.
It should be understood that the uplink wavelength channel transmits optical signals that include at least two different rates and that are staggered in time dimension.
According to a fifth aspect, an embodiment of this application provides a chip. The chip includes a processor and an optical signal receiving apparatus, the optical signal receiving apparatus is configured to receive a first signal and transmit the first signal to the processor, and the processor is configured to perform the method provided in any one of the third aspect or the implementations of the third aspect.
According to a sixth aspect, an embodiment of this application provides a communication apparatus. The apparatus is configured to perform the method provided in the third aspect. Specifically, the communication apparatus may include a unit and/or a module, for example, a processing module and a transceiver module, configured to perform the method provided in any one of the third aspect or the implementations of the third aspect.
In an implementation, the communication apparatus may include a unit and/or a module configured to perform the method provided in any one of the third aspect or the implementations of the third aspect, and is a receiving device. The transceiver module may be a transceiver or an input/output interface. The processing module may be at least one processor. Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.
In another implementation, the communication apparatus is a chip, a chip system, or a circuit in a receiving device. The transceiver module may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin, a related circuit, or the like on the chip, the chip system, or the circuit. The processing module may be at least one processor, a processing circuit, a logic circuit, or the like.
According to a seventh aspect, an embodiment of this application provides a processor, configured to perform the method provided in the third aspect.
Operations such as sending and obtaining/receiving related to the processor may be understood as operations such as output and receiving or input of the processor, or operations such as sending and receiving performed by a radio frequency circuit and an antenna, unless otherwise specified, or provided that the operations do not contradict actual functions or internal logic of the operations in related descriptions. This is not limited in this application.
According to an eighth aspect, an embodiment of this application provides a computer-readable storage medium. The computer-readable storage medium stores program code to be executed by a device, and the program code is used to perform the method provided in any one of the third aspect and the implementations of the third aspect.
According to a ninth aspect, an embodiment of this application provides a computer program product including instructions. When the computer program product runs on a computer, the computer is enabled to perform the method provided in any one of the third aspect and the implementations of the third aspect.
According to a tenth aspect, an embodiment of this application provides a chip. The chip includes a processor and a communication interface. The processor reads, through the communication interface, instructions stored in a memory, to perform the method provided in any one of the third aspect and the implementations of the third aspect.
Optionally, in an implementation, the chip further includes the memory. The memory stores a computer program or instructions. The processor is configured to execute the computer program or the instructions stored in the memory. When the computer program or the instructions are executed, the processor is configured to perform the method provided in any one of the third aspect and the implementations of the third aspect.
For specific beneficial effects brought by the second aspect and the tenth aspect, refer to descriptions of the beneficial effects in the first aspect. Details are not described herein again.
The following describes technical solutions of this application with reference to accompanying drawings.
A PON technology is a broadband access technology based on a passive ODN network. In the technology, a point-to-multipoint (P2MP) topology is used, wavelengths in uplink and downlink transmission are independent, and time division multiplexing is performed on data. In a PON system, an ODN network that connects an OLT and an ONU uses a pure optical medium, which is passive throughout the process, has strong environment adaptability, and is easy to expand and upgrade. Due to comparative advantages in fiber-based, passive, P2MP, and the like relative to copper line access, the PON technology achieves a great success, and is deployed on a large scale. In addition, as broadband networks become increasingly prominent as basic platforms for economic and social development, internet video applications are rapidly popularized, and high-bandwidth services such as 4K/8K high definition, home cloud, and video calls are continuously developed, GPON devices are deployed on a large scale. Currently, deployment of 10GPON devices tends to rapidly rise year by year. However, as video services become basic services of broadband networks and PON technologies gradually develop from the home broadband field to the field of government and enterprise industry, for example, telemedicine, industrial intelligent manufacturing, and communication in factories and mines, a higher requirement is posed on a bandwidth. Therefore, research on a 50GPON technology with a higher bandwidth is in full swing. In the future, 50GPON devices are expected to be used in various scenarios on a large scale.
Due to large-scale deployment of GPON devices and 10GPON devices, it is foreseeable that GPON, 10GPON, and 50GPON devices coexist in one ODN scenario within a specific period of time.
During network evolution, operators have always focused on making full use of live network resources and reducing upgrade and evolution costs. Currently, during smooth evolution from GPON to 10GPON, the most effective method that has been verified currently is to use, on a center office device, an integrated optical transceiver module with coexistence of a plurality of standards. For example, a combo PON (that is, Combo PON) concept is used to implement multiplexing of GPON and 10GPON. A main idea of this solution is to modulate GPON and 10GPON signals on carriers with different wavelengths, and then use a wavelength division multiplexing (WDM) multiplexer to combine light with different optical wavelengths into one optical fiber for transmission. After a multiplexed signal is received, a wavelength division multiplexing demultiplexer demultiplexes optical signals with a plurality of wavelengths in the optical fiber to different receivers based on the different optical wavelengths. In this solution, for different rates, receivers corresponding to the rates are used. To be specific, an avalanche photodiode (APD) and a trans-impedance amplifier (TIA) corresponding to GPON are used during reception in GPON, and an APD and a TIA corresponding to 10GPON are used during reception in 10GPON. In this way, it can be ensured that reception performance at each rate is optimal.
However, difficulty in implementing GPON, 10GPON, and 50GPON on optical components by using the combo PON solution cannot be ignored. First, the technical difficulty is high. Compared with uplink bandwidths in GPON and 10GPON, an available band in 50GPON is narrow. For a scenario in which 50GPON does not coexist with GPON or 10GPON in the future, the narrow band cannot meet a use requirement of a 50GPON system. In addition, the narrow band causes an excessively small wavelength division spacing when an OLT device in a center office receives a signal and performs wavelength division demultiplexing. As a result, a requirement for mounting precision of a passive component is extremely high, and manufacturing is difficult. In addition, due to three-generation coexistence, compared with that in current XGS Combo, an optical module is longer. If all electrical chips are integrated, manufacturing of the optical module faces a great challenge. In addition, a layout of a communication interface of an optical receiver and a multi-generation compatibility solution also bring many problems. Further, three-generation coexistence further causes an increase in costs, for example, manufacturing costs of the optical module and cooling and packaging costs of an ONT.
Therefore, the existing coexistence solution cannot implement a requirement for smooth evolution to 50GPON.
In view of this, embodiments of this application provide a signal amplification method, a communication apparatus, and a passive optical network system. Based on the signal amplification method provided in this application, the foregoing technical problem and cost problem that are caused due to use of WDM during coexistence with 50GPON can be resolved. In this application, 50GPON and GPON coexist in a time division multiplexing manner, optical carriers in a same wavelength range are used, and a same photodetector (APD) is used. A unique TIA (which separately outputs GPON and 50G-PON signals) is designed, and a serial-to-parallel conversion interface of medium access control (MAC) is used to choose to receive a GPON or 50G-PON signal at a specific moment. According to the solution provided in this application, deployment space of a center office device can be saved, and energy consumption of an optical access device can be reduced, so that network construction costs of an operator can be reduced while ODN resources of a live network are effectively used.
Embodiments of this application are applied to a PON system.
Generally, the OLT device is usually located in a center office (center office, CO), and the ONU device is located at or near a user's home. The ONU device provides a user-side interface, and is connected to the ODN device. If the ONU also provides a user interface function, for example, provides an Ethernet user interface or a plain old telephone service (plain old telephone service, POTS) user interface, the ONU is referred to as an optical network terminal (optical network terminal, ONT).
The ODN device includes a passive optical splitter used for optical power distribution, a feeder fiber connected between the passive optical splitter and the OLT, and a distribution fiber connected between the passive optical splitter and the ONU device. During downlink data transmission, the ODN device transmits downlink data of the OLT device to each ONU device through the optical splitter. Similarly, during uplink data transmission, the ODN device aggregates uplink data of the ONU device and then transmits the aggregated uplink data to the OLT device.
It should be noted that a signal amplification apparatus provided in this application is located in an OLT device in a center office, for example, may be integrated into an optical module in the OLT device as a functional feature. A form of the signal amplification apparatus is not limited in this application.
In an implementation, the channel selection unit 202 includes a control unit 2021 and a switching element 2022. In this case, the signal amplification apparatus 200 is shown in
Optionally, the switching element 2022 may be a single-pole double-throw switch, a transistor, or another element that can implement link switching. It should be understood that in
Specifically, as shown in
In another implementation, as shown in
In another implementation, when a rate of the first signal received by the signal receiving unit 201 is 25 Gbps, the first control signaling received by the control unit 2021 indicates the control unit 2021 to control the switching element 2022 to connect the signal receiving unit 201 to the second amplification and data recovery channel 204. In this case, the second amplifier 2041 on the second amplification and data recovery channel 204 is further configured to receive second control signaling. The second control signaling indicates the second amplifier 2041 to decrease a bandwidth of 50G, and preferably, may indicate the second amplifier 2041 to adjust the bandwidth to 25G. In this scenario, the first signal at the rate of 25 Gbps is transmitted to the second amplification and data recovery channel 204 through the switching element 2022, and amplification and data recovery are performed on the first signal by using the second amplifier 2041 located on the second amplification and data recovery channel 204.
It should be understood that, for the first signal whose rate is measured by Gbps, the first control signaling may be used to transmit the first signal within such a rate range to the first amplification and data recovery channel 203, and a bandwidth of the first amplifier 2031 located on the first amplification and data recovery channel 203 is adjusted with reference to the second control signaling.
Adjusting the bandwidth of the amplifier based on the second signaling helps improve a signal-to-noise ratio existing after signal amplification, implement flexible signal amplification, and further improve communication quality.
It should be understood that, for the signal amplification apparatus 200 provided in this embodiment of this application, when amplification and data recovery are performed on a first signal received each time, the first control signaling and the second control signaling are not received along with the first signal at the same time. For example, when the first-rate signal received at a first moment is at a magnitude of 10 Gbps, for example, 25 Gbps, if the second-rate signal received at a second moment after the first moment is at the same magnitude, for example, 50 Gbps, in this case, switching the first control signaling is not needed. In other words, for a receiving apparatus (for example, a receiver) that uses the signal amplification apparatus 200 provided in this application, when a signal is received in a time division multiplexing manner, corresponding control may be performed at a transmitting end. For example, a signal corresponding to a rate of the first amplification and data recovery channel 203 is first sent, and then a signal corresponding to a rate of the second amplification and data recovery channel 204 is sent. In this case, for the receiver, an application scenario in which the first control signaling is received only once and the switching element 2022 is adjusted once during reception can be implemented, so that signal amplification efficiency can be greatly improved, and system performance can be further improved.
In addition, when the signal amplification apparatus 200 receives the first control signaling and the second control signaling, there may be no specific sequence for receiving the control signaling. Preferably, the first control signaling and the second control signaling are received synchronously.
It should be further noted that, in embodiments of this application, both the first control signaling and the second control signaling may be instructions from a system, for example, a control and processing center like a MAC of the system. In this way, the system can control, at different moments based on different rates of arriving uplink signals, the signals to be transmitted to different amplification and data recovery channels, and receive the signals on the corresponding amplification and data recovery channels.
In another implementation, the channel selection unit 202 includes a mirroring module 2023.
Specifically, as shown in
Optionally, as shown in
When the rate of the first signal received by the signal receiving unit 201 is 25 Gbps, in an implementation, the second amplifier 2041 on the second amplification and data recovery channel 204 may receive the second control signaling, and adjust, based on the second control signaling, a bandwidth of the second amplifier 2041 to decrease. Preferably, the second signaling indicates the second amplifier 2041 to decrease the bandwidth to 25G, so that a signal-to-noise ratio of the 25-Gbps first signal that passes through the second amplifier 2041 is improved.
It should be noted that, when the signal amplification apparatus is shown in
It should be further noted that, in embodiments of this application, both the first control signaling and the second control signaling may be instructions from a system, for example, a control and processing center like a MAC of the system. In this way, the system can receive, on corresponding amplification and data recovery channels at different moments based on different rates of arriving uplink signals, the signals that arrive at the moments.
In addition, the amplification apparatus provided in embodiments of this application may further include another amplification and data recovery channel, configured to perform amplification and data recovery on a multi-rate signal. For example, the amplification apparatus provided in embodiments of this application includes M amplification and data recovery channels, rates of the first signal include N rates, the M amplification and data recovery channels correspond to the N rates, and each of the N rates corresponds to one of the M amplification and data recovery channels. Each of the M amplification and data recovery channels is configured to perform amplification and data recovery for a rate corresponding to the channel, and N signals at the N rates are sequentially received by the apparatus 200 or 300 in a time division multiplexing manner. For this process, refer to the foregoing related descriptions of the first amplification and data recovery channel or the second amplification and data recovery channel. Details are not described herein again.
The foregoing describes the signal amplification apparatus provided in embodiments of this application with reference to
Specifically, in the signal amplification apparatus 200, the signal receiving unit 201 is configured to receive the first signal, where the first signal includes the first-rate signal and the second-rate signal. The first-rate signal and the second-rate signal arrive at the signal receiving unit 201 in a staggered manner according to a specific chronological.
It should be understood that, in embodiments of this application, the first signal may further include a signal at another rate, that is, the first signal includes signals at a plurality of rates, and all these signals are transmitted to the signal receiving unit 201 in a time division multiplexing form.
Specifically, in the apparatus 200, the channel selection unit 202 is configured to transmit the first signal to at least one of the first amplification and data recovery channel 203 and the second amplification and data recovery channel 204. When the first signal is transmitted to the first amplification and data recovery channel 203, the first amplification and data recovery channel 203 performs amplification and data recovery on the first signal. When the first signal is transmitted to the second amplification and data recovery channel 204, the second amplification and data recovery channel 204 performs amplification and data recovery on the first signal.
Specifically, in the signal amplification apparatus 200, the signal receiving unit 201 is configured to receive the first signal, where the first signal includes the first-rate signal and the second-rate signal. The first-rate signal and the second-rate signal arrive at the signal receiving unit 201 in a staggered manner according to a specific chronological.
Similarly, the first signal may further include a signal at another rate, that is, the first signal includes signals at a plurality of rates, and all these signals are transmitted to the signal receiving unit 201 in a time division multiplexing form.
Specifically, the control unit 2021 receives the first control signaling, where the first control signaling indicates to transmit the first signal to a first amplification and data recovery channel or a second amplification and data recovery channel.
Specifically, the control unit 2021 controls, based on the first control signaling, the switching element 2022 to connect the signal receiving unit 201 to the first amplification and data recovery channel 203 or the second amplification and data recovery channel 204. For example, when an operating rate/operating bandwidth of the first amplification and data recovery channel 203 corresponds to a first rate, after receiving the first-rate signal, the control unit 2021 controls, based on the first control signaling, the switching element 2022 to connect the signal receiving unit 201 to the first amplification and data recovery channel 203, so that the first amplification and data recovery channel 203 performs amplification and data recovery on the first-rate signal. When an operating rate/operating bandwidth of the second amplification and data recovery channel 204 corresponds to a second rate, after receiving the second-rate signal, the control unit 2021 controls, based on the first control signaling, the switching element 2022 to connect the signal receiving unit 201 to the second amplification and data recovery channel 204, so that the second amplification and data recovery channel 204 performs amplification and data recovery on the second-rate signal.
Specifically, in the signal amplification apparatus 300, the signal receiving unit 201 is configured to receive the first signal, where the rates of the first signal include the first rate and the second rate.
Similarly, the rates of the first signal may include another rate, that is, the first signal is a multi-rate signal.
Specifically, the mirroring module 2023 mirrors the first signal to obtain the second signal.
Specifically, after mirroring the first signal to obtain the second signal, the mirroring module 2023 respectively transmits the first signal and the second signal to the first amplification and data recovery channel and the second amplification and data recovery channel, so that the second amplification and data recovery channel 204 performs amplification and data recovery on the second signal while the first amplification and data recovery channel 203 performs amplification and data recovery on the first signal.
It should be noted that sequence numbers of the foregoing processes do not mean a sequence of execution. The sequence of execution of the processes should be determined according to functions and internal logic of the processes, and should not constitute any limitation on an implementation process of embodiments of this application.
It should be further understood that in embodiments of this application, unless otherwise stated or there is a logic conflict, terms and/or descriptions between different embodiments are consistent and may be mutually referenced, and technical features in different embodiments may be combined into a new embodiment based on an internal logical relationship thereof.
Specifically, in
In an implementation, when a rate of the first-rate signal is 1.25 Gbps, after amplification and data recovery are performed on the first-rate signal by using a first amplifier 2031, the first-rate signal is transmitted to a line amplifier (LA) or a limiting amplifier (LA) 220 for amplification again, enters a burst clock and data recovery (burst clock and data recovery, BCDR) 230 for decision and data recovery, and then is received by a MAC 260. When the second-rate signal is 50 Gbps, after being amplified by a second amplifier 2041, the second-rate signal is transmitted to a 50G optical digital signal processing (optical digital signal processing, oDSP) and BCDR decision module 240 for digital processing and data recovery, is output to a 2*25G non-return-to-zero (NRZ) coding module 250 for coding, and then is received by the MAC 260.
For example, the optical signal receiving and converting unit may be an optical-to-electrical conversion chip, for example, an APD.
Next, two different structures 1001 and 1002 of the receiving apparatus 1000 in this application are described in detail based on different structures of the channel selection unit 202 with reference to
Specifically, as shown in
For example, when an uplink first optical signal at a first moment is a first-rate optical signal, for example, is 1.25 Gbps, the optical signal receiving and converting unit converts the first-rate optical signal into a first-rate electrical signal, and outputs the first-rate electrical signal to the channel selection unit 202. The control unit 2021 receives the first control signaling from the MAC, controls, based on the first control signaling, the single-pole double-throw switch 2022 to be connected to the first amplification and data recovery channel 203, and transmits the first-rate electrical signal to the first amplification and data recovery channel 203. The first-rate electrical signal is received by the MAC 260 after successively passing through the LA 220 and the BCDR 230. When an uplink first optical signal at a second moment is a second-rate optical signal, for example, is 50 Gbps, the optical signal receiving and converting unit converts the second-rate optical signal into a second-rate electrical signal, and outputs the second-rate electrical signal to the channel selection unit 202. The control unit 2021 receives the first control signaling from the MAC, controls, based on the first control signaling, the single-pole double-throw switch 2022 to be connected to the second amplification and data recovery channel 204, and transmits the second-rate electrical signal to the second amplification and data recovery channel 204. The second-rate electrical signal is received by the MAC 260 after successively passing through the oDSP and BCDR decision module 240 and the NRZ coding module 250.
In addition, the MAC 260 may control operating rates/operating bandwidths of different amplification and data recovery channels by sending second control signaling to the first amplifier 2031 or the second amplifier 2041. Specifically, when the rate of the first signal is 25 Gbps, the MAC 260 may send the second control signaling to the second amplifier 2041 based on the rate of the first signal, where the second control signaling indicates the second amplifier 2041 to decrease an amplification bandwidth. In an implementation, the second control signaling includes a specified bandwidth value, and indicates the second amplifier 2041 to adjust the amplification bandwidth to the specified bandwidth value. For example, when the specified bandwidth value is 25G, the second amplifier 2041 adjusts the bandwidth to the specified 25G. Alternatively, in another implementation, the second control signaling indicates the second amplifier 2041 to decrease the bandwidth, the second control signaling includes an indication field, and a value of the indication field is a bandwidth value for adjustment by the second amplifier 2041. For example, when the value of the indication field is 25, after receiving the second control signaling, the second amplifier 2041 decreases the bandwidth of 50G by 25G, so that after a decreased bandwidth is adjusted to 25G, amplification and data recovery are performed on the received first signal. Alternatively, in another implementation, the second control signaling only indicates the second amplifier 2041 to decrease the bandwidth, and does not specifically indicate a bandwidth value that needs to be decreased. After receiving the second indication signaling, the second amplifier 2041 needs only to decrease the bandwidth of 50G.
The control end of the MAC 260 may receive, based on an uplink time sequence of an ONT device, an uplink signal on an amplification and data recovery channel that matches the rate of the first signal. For example, when the rate of the first signal is 50 Gbps at a specific moment, although the first signal is transmitted on the first amplification and data recovery channel 203 in addition to the second amplification and data recovery channel 204, the control end of the MAC 260 receives only an uplink signal transmitted on the second amplification and data recovery channel 204.
It should be understood that for descriptions of other parts shown in
The communication apparatus provided in embodiments of this application is described below in detail with reference to
In embodiments of this application, the signal amplification apparatus 200 or 300 may be divided into functional modules based on the foregoing method examples. For example, each functional module may be obtained through division based on each corresponding function, or two or more functions may be integrated into one processing module. The integrated module may be implemented in a form of hardware, or may be implemented in a form of a software functional module. It should be noted that division into the modules in embodiments of this application is an example, and is merely logical function division. In actual implementation, there may be another division manner. An example in which each functional module is obtained through division based on each corresponding function is used below for description.
The processor 1301 and the optical transceiver 1302 are configured to implement the methods performed by the apparatus 200 or 300 in
The memory 1303 may be configured to store instructions, so that the processor 1301 can be configured to perform the steps mentioned in the foregoing figures. Alternatively, the memory 1303 may be configured to store other instructions, to configure a parameter of the processor 1301 to implement a corresponding function.
It should be noted that the apparatus in
Based on the foregoing embodiments, an embodiment of this application further provides a computer-readable storage medium. The storage medium stores a software program. When the software program is read and executed by one or more processors, the method provided in any one or more of the foregoing embodiments may be implemented. The computer-readable storage medium may include any medium that can store program code, such as a USB flash drive, a removable hard disk, a read-only memory, a random access memory, a magnetic disk, or an optical disc.
Based on the foregoing embodiments, an embodiment of this application further provides a chip. The chip includes a processor, configured to implement the function in any one or more of the foregoing embodiments, for example, perform amplification and data recovery on a first signal. Optionally, the chip further includes a memory. The memory is configured to store program instructions and data that are necessary for execution by the processor. The chip may include a chip, or may include a chip and another discrete component.
It is clear that a person skilled in the art can make various modifications and variations to embodiments of this application without departing from the scope of embodiments of this application. Thus, this application is intended to cover these modifications and variations, provided that they fall within the scope of the claims of this application and their equivalent technologies.
It should be understood that the processor in embodiments of this application may be a central processing unit (CPU), or may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or another programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or the like. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor or the like.
It should be further understood that the memory mentioned in embodiments of this application may be a volatile memory and/or a nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a programmable read-only memory (programmable ROM, PROM), an erasable programmable read-only memory (erasable PROM, EPROM), an electrically erasable programmable read-only memory (electrically EPROM, EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM). For example, the RAM may be used as an external cache. By way of example and not limitation, the RAM may include a plurality of forms, such as a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), a synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), an enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), a synchlink dynamic random access memory (synchlink DRAM, SLDRAM), and a direct rambus random access memory (direct rambus RAM, DR RAM).
It should be noted that when the processor is a general-purpose processor, a DSP, an ASIC, an FPGA or another programmable logic device, a discrete gate or a transistor logic device, or a discrete hardware component, the memory (a storage module) may be integrated into the processor.
A person of ordinary skill in the art may be aware that, in combination with the examples described in embodiments disclosed in this specification, units and steps may be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed by hardware or software depends on specific applications and design constraints of the technical solutions. A person skilled in the art may use different methods to implement the described functions for each particular application, but it should not be considered that the implementation goes beyond the protection scope of this application.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the described apparatus embodiments are merely examples. For example, division into the units is merely logical function division. In actual implementation, there may be another division manner. For example, a plurality of units or components may be combined or integrated into another system, or some features may be ignored or not performed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections may be implemented through some interfaces, and indirect couplings or communication connections between apparatuses or units may be implemented in an electrical, mechanical, or another form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected based on actual requirements to achieve the solutions provided in this application.
In addition, functional units in embodiments of this application may be integrated into one unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
All or some of the foregoing embodiments may be implemented by software, hardware, firmware, or any combination thereof. When software is used to implement the embodiments, all or some of the embodiments may be implemented in a form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions according to embodiments of this application are all or partially generated. The computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable apparatuses. For example, the computer may be a personal computer, a server, or a network device. The computer instructions may be stored in a computer-readable storage medium or may be transmitted from a computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center to another website, computer, server, or data center in a wired (for example, a coaxial cable, an optical fiber, or a digital subscriber line (DSL)) or wireless (for example, infrared, radio, or microwave) manner. The computer-readable storage medium may be any usable medium accessible by the computer, or a data storage device, such as a server or a data center, integrating one or more usable media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, or a magnetic tape), an optical medium (for example, a DVD), a semi-conductor medium (for example, a solid-state disk (SSD)), or the like. For example, the usable medium may include but is not limited to any medium that can store program code, for example, a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disc.
The foregoing descriptions are merely specific implementations of this application. However, the protection scope of this application is not limited thereto. Any change or replacement readily figured out by a person skilled in the art within the technical scope disclosed in this application shall fall within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202210912578.9 | Jul 2022 | CN | national |
This application is a continuation of International Application No. PCT/CN2023/099948, filed on Jun. 13, 2023, which claims priority to Chinese Patent Application No. 202210912578.9, filed on Jul. 30, 2022. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2023/099948 | Jun 2023 | WO |
| Child | 19027990 | US |
