CN114268859A - Signal transmission method, device, equipment and readable storage medium - Google Patents
Signal transmission method, device, equipment and readable storage medium Download PDFInfo
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Abstract
The invention provides a signal transmission method, a signal transmission device, signal transmission equipment and a readable storage medium, and relates to the technical field of communication. The transmission method of the uplink signal is applied to an inter-domain interface of an optical transport network, and comprises the following steps: receiving a first signal sent by client terminal equipment, wherein the transmission rate of the first signal is less than 1G bit/s; mapping the first signal into a second signal according to a first mapping rule, wherein the transmission rate of the second signal is greater than that of the first signal; and sending the second signal to a metropolitan area network. The invention can solve the problem of bandwidth resource waste when an inter-domain interface bears a small-particle service signal in the prior art.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a signal transmission method, a signal transmission device, signal transmission equipment and a readable storage medium.
Background
In a metropolitan area Network environment, to implement access to a Customer service, an operator may deploy, at a user side, user side Equipment, such as CPE (Customer premises Equipment) OTN (Optical Transport Network) Equipment, to implement PDH (Plesiochronous Digital Hierarchy), such as E1; SDH (Synchronous Digital Hierarchy) such as STM-1, STM-4, etc.; the access of Ethernet such as FE, GE, etc., the CPE OTN equipment is connected to the metropolitan area OTN equipment through the upper connection IrDI (inter-domain interface) interface, so as to realize the transmission of the collecting service from the access to the metropolitan area network to the backbone network.
The minimum of the current IrDI interface for uplink is OTU1, namely 2.5G rate, and the problem of bandwidth waste exists. Secondly, a 2.5G OTU1 interface is connected to the metro OTN network, and the metro OTN network opens up a 2.5G channel, even if the actual traffic flow in the channel is only hundreds of M, tens of M, or even several M, and the channel is encapsulated in a 2.5G channel for transmission, which may result in the waste of the metro OTN network bandwidth resources.
Disclosure of Invention
Embodiments of the present invention provide a signal transmission method, an apparatus, a device, and a readable storage medium, which solve the problem of bandwidth resource waste when an inter-domain interface in the prior art carries a small-granule service signal.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a method for transmitting an uplink signal, which is applied to an inter-domain interface of an optical transport network, and includes:
receiving a first signal sent by client terminal equipment, wherein the transmission rate of the first signal is less than 1G bit/s;
mapping the first signal into a second signal according to a first mapping rule, wherein the transmission rate of the second signal is greater than that of the first signal;
and sending the second signal to a metropolitan area network.
Optionally, the mapping the first signal to the second signal according to the first mapping rule includes:
mapping the first signal into one or more optical path data unit ODU0 signals;
mapping the one or more optical channel data unit ODU0 signals into an optical channel transport unit OTUk signal;
wherein the optical path transmission unit OTUk signal is one of an OTU0 signal, an OTU1 signal, an OTU2 signal, an OTU3 signal and an OTU4 signal.
Optionally, the mapping the first signal into one or more optical channel data unit ODU0 signals includes:
mapping the first signal of one or more different types to an ODU0 signal according to a GFP-C protocol.
Optionally, before the sending the second signal to the metropolitan area network, the method further includes:
and if the transmission rate of the second signal is less than a first target transmission rate, adjusting the transmission rate of the second signal to the first target transmission rate.
In a second aspect, an embodiment of the present invention further provides a method for transmitting a downlink signal, which is applied to an inter-domain interface of an optical transport network, and includes:
receiving a third signal sent by a metropolitan area network;
demapping the third signal into a fourth signal according to a first demapping rule, wherein a transmission rate of the fourth signal is smaller than a transmission rate of the third signal;
and sending the fourth signal to client terminal equipment, wherein the transmission rate of the fourth signal is less than 1G bit/s.
Optionally, the demapping the third signal into the fourth signal according to the first demapping rule includes:
demapping the third signal into one or more optical channel data unit ODU0 signals, where the third signal is an optical channel transport unit OTUk signal;
wherein the optical path transmission unit OTUk signal is one of an OTU0 signal, an OTU1 signal, an OTU2 signal, an OTU3 signal and an OTU4 signal;
demapping the one or more optical path data unit ODU0 signals into a fourth signal.
In a third aspect, an embodiment of the present invention further provides a device for transmitting an uplink signal, where the device includes:
the first receiving module is used for receiving a first signal sent by client terminal equipment, and the transmission rate of the first signal is less than 1G bit/s;
a first conversion module, configured to map the first signal into a second signal according to a first mapping rule, where a transmission rate of the second signal is greater than a transmission rate of the first signal;
and the first sending module is used for sending the second signal to a metropolitan area network.
Optionally, the first conversion module includes:
a first mapping submodule, configured to map the first signal into one or more optical channel data unit ODU0 signals;
a second mapping sub-module, configured to map the one or more optical channel data unit ODU0 signals into an optical channel transport unit OTUk signal; wherein the optical path transmission unit OTUk signal is one of an OTU0 signal, an OTU1 signal, an OTU2 signal, an OTU3 signal and an OTU4 signal.
Optionally, when the OTUk signal of the optical path transmission unit is an OTU0 signal, the OTUk signal is a block frame structure of 4 rows and 4080 columns, where 1 to 7 columns of the 1 st row are frame header indication overheads, 8 to 15 columns of the 1 st row are overhead regions of OTU0, 3825 to 4080 columns of the 1 st to 4 th rows are forward error correction code check regions of OTU0, and the rest are payload regions of OTU 0.
Optionally, the apparatus further comprises:
and the first rate adjusting module is used for adjusting the transmission rate of the second signal to the first target transmission rate if the transmission rate of the second signal is less than the first target transmission rate.
In a fourth aspect, an embodiment of the present invention further provides a device for transmitting a downlink signal, where the device includes:
the second receiving module is used for receiving a third signal sent by the metropolitan area network;
a second conversion module, configured to demap the third signal into a fourth signal according to a first demapping rule, where a transmission rate of the fourth signal is less than a transmission rate of the third signal;
and the second sending module is used for sending the fourth signal to the client terminal equipment, and the transmission rate of the fourth signal is less than 1G bit/s.
Optionally, the second conversion module includes:
a first demapping submodule, configured to demap the third signal into one or more optical channel data unit ODU0 signals, where the third signal is an optical channel transport unit OTUk signal; wherein the optical path transmission unit OTUk signal is one of an OTU0 signal, an OTU1 signal, an OTU2 signal, an OTU3 signal and an OTU4 signal;
a second demapping submodule, configured to demap the one or more optical channel data unit ODU0 signals into a fourth signal.
In a fifth aspect, an embodiment of the present invention further provides a signal transmission apparatus, applied to a metropolitan area network side of an optical transport network, including: a processor and a transceiver;
the transceiver is used for acquiring a first signal from client terminal equipment, and the transmission rate of the first signal is less than 1G bit/s;
the processor is configured to map the first signal into a second signal according to a first mapping rule, where a transmission rate of the second signal is greater than a transmission rate of the first signal;
the transceiver is used for transmitting the second signal to a metropolitan area network.
In a sixth aspect, an embodiment of the present invention further provides a signal transmission apparatus, applied to a client terminal device side of an optical transport network, including: a processor and a transceiver;
the transceiver is used for acquiring a third signal from a metropolitan area network;
the processor is configured to demap the third signal into a fourth signal according to a first demapping rule, where a transmission rate of the fourth signal is smaller than a transmission rate of the third signal;
and the transceiver is used for sending the fourth signal to client terminal equipment, and the transmission rate of the fourth signal is less than 1G bit/s.
In a seventh aspect, an embodiment of the present invention further provides a communication device, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is configured to read a program in the memory to implement the steps in the method for transmitting an uplink signal according to the first aspect; or implementing the steps in the method for transmitting downlink signals according to the second aspect.
In an eighth aspect, an embodiment of the present invention further provides a readable storage medium, which is used for storing a program, and when the program is executed by a processor, the method for transmitting an uplink signal according to the first aspect is implemented; or implementing the steps in the method for transmitting downlink signals according to the second aspect.
In the embodiment of the invention, when a first signal with the transmission rate less than 1 gigabit/s sent by client terminal equipment is received, the first signal is mapped into a second signal with the transmission rate greater than that of the first signal according to a first mapping rule, and the second signal is sent to a metropolitan area network. By the method, when the client signal with the traffic volume less than 1G bit/s is received, the transmission rate of the client signal to the metropolitan area network is improved by adopting the first mapping rule, so that the waste of the metropolitan area OTN network bandwidth resource can be reduced.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a flowchart of a method for transmitting an uplink signal according to an embodiment of the present invention;
fig. 2 is a mapping table applied in the uplink signal transmission method according to the embodiment of the present invention;
fig. 3 is a flowchart of a method for transmitting a downlink signal according to an embodiment of the present invention;
fig. 4 is one of the structural diagrams of the uplink signal transmission apparatus according to the embodiment of the present invention;
fig. 5 is a schematic diagram of an OTU0 frame structure of a transmission method of an uplink signal according to an embodiment of the present invention;
fig. 6 is a second structural diagram of an uplink signal transmission apparatus according to an embodiment of the present invention;
fig. 7 is one of the structural diagrams of a downlink signal transmission apparatus according to an embodiment of the present invention;
fig. 8 is one of the structural diagrams of a signal transmission apparatus provided in the embodiment of the present invention;
fig. 9 is a second structural diagram of a signal transmission device according to an embodiment of the present invention;
fig. 10 is one of the structural diagrams of a communication apparatus provided in the embodiment of the present invention.
Detailed Description
The term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a flowchart of a transmission method of an uplink signal according to an embodiment of the present invention, applied to an inter-domain interface of an optical transport network, including the following steps:
step 101: receiving a first signal sent by client terminal equipment, wherein the transmission rate of the first signal is less than 1G bit/s;
step 102: mapping the first signal into a second signal according to a first mapping rule, wherein the transmission rate of the second signal is greater than that of the first signal;
step 103: and sending the second signal to a metropolitan area network.
In the embodiment of the invention, when a first signal with the transmission rate less than 1G bit/s sent by client terminal equipment is received, the first signal is mapped into a second signal with the transmission rate greater than that of the first signal according to a first mapping rule, and the second signal is sent to a metropolitan area network. By the method, when the client signal with the traffic volume less than 1G bit/s is received, the transmission rate of the client signal to the metropolitan area network is improved by adopting the first mapping rule, so that the waste of the metropolitan area OTN network bandwidth resource can be reduced.
In some embodiments of the present invention, optionally, the mapping the first signal to the second signal according to the first mapping rule includes:
mapping the first signal into one or more optical path data unit ODU0 signals;
mapping the one or more optical channel data unit ODU0 signals into an optical channel transport unit OTUk signal;
wherein the optical path transmission unit OTUk signal is one of an OTU0 signal, an OTU1 signal, an OTU2 signal, an OTU3 signal and an OTU4 signal.
In this embodiment of the present invention, a first mapping rule is that a first signal is mapped to one or more ODU0 signals, and then one or more ODU0 signals are mapped to OTUk signals; by redefining a new high-efficiency OTUk signal encapsulation mode, the high-efficiency transmission from the encapsulation of the small-particle service signals to the inter-domain interface is realized.
In some embodiments of the present invention, the OTU0 signal may be used on the edge access side of the OTN network, which enables multiple vendors to implement signal transmission between each other based on the OTU0 interface.
According to the transmission method of the uplink signal provided by the real-time embodiment of the invention, a novel IrDI interface can be provided, and meanwhile, in order to ensure the backward compatibility of the interface, the flexible bandwidth adjustment of the interface at different rates needs to be ensured, and the specific mode is as follows:
mode 1: when the OTUk signal is an OTU0 signal, an OTU0 IrDI interface with a rate of about 1G may be adopted, that is, the existing GE ethernet optical device is repeatedly utilized to encapsulate a plurality of or a plurality of service signals in the OTU 0.
In the embodiment of the invention, a novel IrDI interface OTU0 suitable for carrying small particle service is designed.
Mode 2: when the OTUk signal is one of OTU1, OTU2, OTU3 and OTU4, taking OTU1 as an example, the existing OTU1 IrDI interface can be used, and when the initial traffic is not large, the OTU1 interface can be adjusted to 1G of OTU0, and when the traffic is increased, the rate is increased to 2.5G.
The OTU1 IrDI interface can adapt the transmission rate to the transmission rate of OTU0 when small service signals are transmitted.
In the 2 implementation manners, the same interface rate and encapsulation manner are adopted.
In some embodiments of the present invention, optionally, when the OTUk signal of the optical path transmission unit is an OTU0 signal, the OTUk signal is a 4-row 4080-column block frame structure, where 1 to 7 columns of the 1 st row are frame header indication overheads, 8 to 15 columns of the 1 st row are overhead areas of the OTU0, 3825 to 4080 columns of the 1 st to 4 th rows are forward error correction code check areas of the OTU0, and the rest are payload areas of the OTU 0.
In the embodiment of the present invention, the frame structure of the OTU0 is based on the ODU0 frame structure, and is extended by using a forward error correction code check area.
Referring to fig. 5, fig. 5 is a schematic diagram of an OTU0 frame structure of a transmission method of an uplink signal according to an embodiment of the present invention, where an OTU0 adopts a block frame structure, and there are 4 rows and 4080 columns in total. Columns 1-7 of a row 1 are frame header indication overhead, and columns 8-15 of the row 1 are overhead areas of OTU 0; 3825-4080 columns of the 1 st-4 th rows are forward error correction code check areas of OTU 0; the rest is a payload area of the OTU0, which is used for filling service signals; starting from column 3825, 256 columns of FECs are added to the ODU0 frame.
The OTU0 overhead is the same as the OTUk (k ═ 1,2,3) overhead, and management and control signaling is passed using a specific overhead.
The bit rate of the OTU0 signal was 255/239 x 1244160kbit/s (about 1327451.046 kbit/s).
The frame period of the OTU0 signal is approximately 98.354 mus.
The forward error correction code check field in the OTU0 frame contains a forward error correction code of RS error correction Codes (Reed-Solomon Codes, block-based error correction Codes), where the RS error correction code may be RS (255,239) and is calculated and processed in the same manner as the OTUk ( k 1,2,3,4) forward error correction code.
In some embodiments of the present invention, optionally, to reduce the traffic transmission delay, the forward error correction function of the OTU0 may be turned off or on, and in a scenario where the transmission distance is short, for example, within 2km, the forward error correction may be turned off, so as to reduce the delay caused by the forward error correction processing.
In some embodiments of the present invention, optionally, the mapping the first signal into one or more optical channel data unit ODU0 signals includes:
mapping the first signal of one or more different types to an ODU0 signal according to a GFP-C protocol.
In some embodiments of the invention, the OTU0 carries one or more client signals within the OTN network, and the corresponding client end device may be one or more of GE/FE ethernet, STM-1/STM-4, or E1.
In some embodiments of the present invention, optionally, mapping the first signal into one or more ODU0 signals includes:
and selecting a proper container according to the flow of the first signal, and selecting a mapping mode according to the type of the client terminal equipment to map the container into the ODU0 signal.
And the flow of the first signal is determined according to the number and the types of different client terminal devices. The container and the mapping mode are determined according to the requirements of customers; the Container may be a VC (Virtual Container) or an STM Module (Synchronous Transport Module) that loads multiple VCs; in particular, the container may be one or more of VC12, VC3, VC4, STM-1 and STM-4. The Mapping method may be one of GMP (Generic Mapping Procedure), GFP-F (Generic Framing Procedure), GFP-C (Generic Framing Procedure for CBR for fixed bit rate services), and GMP TTT (Generic Mapping Procedure using Transparent Timing transform), where GMP TTT is a standard Mapping method for GE to ODU0 for each manufacturer.
Specifically, referring to fig. 2, fig. 2 is a mapping table of a transmission method of an uplink signal according to an embodiment of the present invention, for example, when a client terminal device is a mixture of 1 or more STM-1/STM-4, an STM-4 signal and 3 STM-1 signals are used as first signals, and are mapped to an ODU0 signal according to a GFP-C mapping method and then mapped to an OTUk signal, which indicates that STM-1/STM-4 mixed transmission is performed and clock transparent transmission is supported.
In the embodiment of the present invention, a novel mapping rule is provided, a novel efficient OTU0 encapsulation manner is defined, and mapping of one or more different types of first signals into ODU0 signals according to a GFP-C protocol is supported.
In some embodiments of the present invention, optionally, before the sending the second signal to the metropolitan area network, the method further includes:
and if the transmission rate of the second signal is less than a first target transmission rate, adjusting the transmission rate of the second signal to the first target transmission rate.
Wherein, the transmission rate of the OTU0 is 1.32G bit/s, and the transmission rate of the OTU1 is 2.5G bit/s.
When the OTUk signal is one of OTU1, OTU2, OTU3 and OTU4, taking the OTU1 signal as an example, the transmission rate of the OTU1 can be adaptive to 1.32G bit/s when carrying small-particle traffic.
In the embodiment of the invention, when one of the interfaces OTU1, OTU2, OTU3 and OTU4 is adopted to transmit the small particle service less than 1G bit/s, the transmission rate of the interface can be reduced to 1.32G bit/s, and the bandwidth resource use in the small particle service scene is further optimized; when the uplink traffic is less, the interfaces OTU1, OTU2, OTU3 and OTU4 can adopt OTU0 with lower speed to transmit the traffic, and when the traffic is increased, the interfaces are directly switched to OTU1/OTU2/OTU3/OTU4 with higher speed, so that smooth upgrade of traffic transmission can be ensured without replacing the interfaces.
Referring to fig. 3, fig. 3 is a flowchart of a method for transmitting downlink signals according to an embodiment of the present invention, which is applied to an inter-domain interface of an optical transport network, and includes the following steps:
step 301: receiving a third signal sent by a metropolitan area network;
step 302: demapping the third signal into a fourth signal according to a first demapping rule, wherein a transmission rate of the fourth signal is smaller than a transmission rate of the third signal;
step 303: and sending the fourth signal to client terminal equipment, wherein the transmission rate of the fourth signal is less than 1G bit/s.
In the embodiment of the invention, when a third signal sent by a metropolitan area network is received, the third signal is demapped into a fourth signal according to a first demapping rule, and the fourth signal is sent to the client terminal equipment, wherein the transmission rate of the fourth signal is less than 1G bit/s. By the method, the first demapping rule is adopted when the metropolitan area network sends the client signal with the traffic less than 1G bit/s to the client terminal equipment, and waste of metropolitan area OTN network bandwidth resources is reduced.
In some embodiments of the present invention, optionally, the demapping the third signal into the fourth signal according to the first demapping rule includes:
demapping the third signal into one or more optical channel data unit ODU0 signals, where the third signal is an optical channel transport unit OTUk signal. Wherein the optical path transport unit OTUk signal is one of an OTU0 signal, an OTU1 signal, an OTU2 signal, an OTU3 signal, and an OTU4 signal, and then the one or more optical path data unit ODU0 signals are demapped into a fourth signal.
In this embodiment of the present invention, a first demapping rule is to firstly demap a third signal into one or more ODU0 signals, where the third signal is an OTUk signal; demapping the one or more ODU0 signals to a fourth signal; by redefining a new high-efficiency OTUk signal encapsulation mode, the high-efficiency transmission from the encapsulation of the small-particle service signals to the inter-domain interface is realized.
Referring to fig. 4, fig. 4 is a structural diagram of an uplink signal transmission device 40 according to an embodiment of the present invention, including:
a first receiving module 401, configured to receive a first signal sent by a client terminal device, where a transmission rate of the first signal is less than 1G bit/s;
a first conversion module 402, configured to map the first signal into a second signal according to a first mapping rule, where a transmission rate of the second signal is greater than a transmission rate of the first signal;
a first sending module 403, configured to send the second signal to a metropolitan area network.
In the embodiment of the invention, when the transmission device of the uplink signal receives a first signal with the transmission rate less than 1 gigabit/s sent by the client terminal equipment, the first signal is mapped into a second signal with the transmission rate greater than that of the first signal according to a first mapping rule, and the second signal is sent to the metropolitan area network. By the method, when the transmission device of the uplink signal receives the client signal with the traffic volume less than 1 gigabit/s, the first mapping rule is adopted to improve the transmission rate of the client signal to the metropolitan area network, so that the waste of the metropolitan area OTN network bandwidth resource can be reduced.
In some embodiments of the present invention, optionally, the first conversion module 401 includes:
a first mapping submodule, configured to map the first signal into one or more optical channel data unit ODU0 signals;
a second mapping sub-module, configured to map the one or more optical channel data unit ODU0 signals into an optical channel transport unit OTUk signal; wherein the optical path transmission unit OTUk signal is one of an OTU0 signal, an OTU1 signal, an OTU2 signal, an OTU3 signal and an OTU4 signal.
In the embodiment of the present invention, a transmission device of an uplink signal maps a first signal into one or more ODU0 signals, and then maps one or more ODU0 signals into an OTUk signal; by redefining a new high-efficiency OTUk signal encapsulation mode, the high-efficiency transmission from the encapsulation of the small-particle service signals to the transmission device of the uplink signals is realized.
In some embodiments of the present invention, optionally, when the OTUk signal of the optical path transmission unit is an OTU0 signal, the OTUk signal is a 4-row 4080-column block frame structure, where 1 to 7 columns of the 1 st row are frame header indication overheads, 8 to 15 columns of the 1 st row are overhead areas of the OTU0, 3825 to 4080 columns of the 1 st to 4 th rows are forward error correction code check areas of the OTU0, and the rest are payload areas of the OTU 0.
In the embodiment of the present invention, the frame structure of the OTU0 is based on the ODU0 frame structure, and is extended by using a forward error correction code check area.
In some embodiments of the present invention, optionally, the apparatus further includes:
and the first rate adjusting module is used for adjusting the transmission rate of the second signal to the first target transmission rate if the transmission rate of the second signal is less than the first target transmission rate.
Specifically, referring to fig. 6, fig. 6 is a second structural diagram of the uplink signal transmission device according to the embodiment of the present invention, including:
a first receiving module 601, configured to receive a first signal sent by a client terminal device, where a transmission rate of the first signal is less than 1G bit/s;
a conversion module 605, configured to map the first signal into a second signal according to a first mapping rule, where a transmission rate of the second signal is greater than a transmission rate of the first signal;
a first sending module 602, configured to send the second signal to a metropolitan area network;
a second receiving module 603, configured to receive a third signal sent by the metropolitan area network;
the conversion module 605 is further configured to demap the third signal into a fourth signal according to a first demapping rule, where a transmission rate of the fourth signal is less than a transmission rate of the third signal;
a second sending module 604, configured to send the fourth signal to the client terminal device, where a transmission rate of the fourth signal is less than 1G bit/s;
a rate identifying device 606, configured to adjust the transmission rate of the second signal to a first target transmission rate if the transmission rate of the second signal is less than the first target transmission rate.
In some embodiments of the present invention, optionally, when the transmission rate of the OTU1 is adaptive to the transmission rate of the OTU0, the rate identification device 606 is built in an optical module of the OTU1 interface, the rate identification device 606 may automatically adjust a CDR (clock data recovery) in an optical chip according to the size of the identification electrical-layer signal, when the device output electrical signal is 2.5Gbit/s, the rate identification device 606 adjusts the CDR rate to 2.5G, and simultaneously feeds back information that the phase locking is successful to the receiving CDR605, so as to ensure that the received signal is also 2.5 Gbit/s. If the electric signal output by the device is lower than 1.32Gbit/s, the CDR is directly reduced to 1.32G by the identifier.
In some embodiments of the present invention, optionally, the OTU0 and OTU1 use the same FEC coding.
In the embodiment of the invention, when one of the interfaces OTU1, OTU2, OTU3 and OTU4 is adopted to transmit the small particle service less than 1G bit/s, the transmission rate of the interface can be reduced to 1.32G bit/s, and the bandwidth resource use in the small particle service scene is further optimized; when the uplink traffic is less, the interfaces OTU1, OTU2, OTU3 and OTU4 can adopt OTU0 with lower speed to transmit the traffic, and when the traffic is increased, the interfaces are directly switched to OTU1/OTU2/OTU3/OTU4 with higher speed, so that smooth upgrade of traffic transmission can be ensured without replacing the interfaces.
Referring to fig. 7, fig. 7 is a structural diagram of a downlink signal transmission apparatus according to an embodiment of the present invention. The transmission device of the downlink signal comprises:
a second receiving module 701, configured to receive a third signal sent by a metropolitan area network;
a second conversion module 702, configured to demap the third signal into a fourth signal according to a first demapping rule, where a transmission rate of the fourth signal is smaller than a transmission rate of the third signal;
a second sending module 703, configured to send the fourth signal to the client terminal device, where a transmission rate of the fourth signal is less than 1G bit/s.
In the embodiment of the invention, when the transmission device of the downlink signal receives the third signal sent by the metropolitan area network, the third signal is demapped into the fourth signal according to the first demapping rule, and the fourth signal is sent to the client terminal equipment, wherein the transmission rate of the fourth signal is less than 1G bit/s. By the method, the first demapping rule is adopted when the metropolitan area network sends the client signal with the traffic less than 1G bit/s to the client terminal equipment, and waste of metropolitan area OTN network bandwidth resources is reduced.
In some embodiments of the present invention, optionally, the second conversion module 702 includes:
a first demapping submodule, configured to demap the third signal into one or more optical channel data unit ODU0 signals, where the third signal is an optical channel transport unit OTUk signal; wherein the optical path transmission unit OTUk signal is one of an OTU0 signal, an OTU1 signal, an OTU2 signal, an OTU3 signal and an OTU4 signal;
a second demapping submodule, configured to demap the one or more optical channel data unit ODU0 signals into a fourth signal.
In the embodiment of the present invention, a downlink signal transmission device first demaps a third signal into one or more ODU0 signals, where the third signal is an OTUk signal; demapping the one or more ODU0 signals to a fourth signal; by redefining a new high-efficiency OTUk signal encapsulation mode, the high-efficiency transmission from the encapsulation of the small-particle service signal to the transmission device of the downlink signal is realized.
Referring to fig. 8, fig. 8 is a structural diagram of a signal transmission apparatus 80 according to an embodiment of the present invention, which is applied to a metropolitan area network side of an optical transport network, and as shown in fig. 8, the signal transmission apparatus includes: a transceiver 81 and a processor 82;
the transceiver 81 is configured to acquire a first signal from a client terminal device, where a transmission rate of the first signal is less than 1G bit/s;
the processor 82 is configured to map the first signal into a second signal according to a first mapping rule, where a transmission rate of the second signal is greater than a transmission rate of the first signal;
the transceiver 81 is configured to send the second signal to a metropolitan area network.
Optionally, the mapping the first signal to the second signal according to the first mapping rule includes:
mapping the first signal into one or more optical path data unit ODU0 signals;
mapping the one or more optical channel data unit ODU0 signals into an optical channel transport unit OTUk signal;
wherein the optical path transmission unit OTUk signal is one of an OTU0 signal, an OTU1 signal, an OTU2 signal, an OTU3 signal and an OTU4 signal.
Optionally, the mapping the first signal into one or more optical channel data unit ODU0 signals includes:
mapping the first signal of one or more different types to an ODU0 signal according to a GFP-C protocol.
Optionally, before the sending the second signal to the metropolitan area network, the method further includes:
and if the transmission rate of the second signal is less than a first target transmission rate, adjusting the transmission rate of the second signal to the first target transmission rate.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Referring to fig. 9, fig. 9 is a structural diagram of a signal transmission apparatus according to an embodiment of the present invention, applied to a client terminal device side of an optical transport network, as shown in fig. 9, including: a transceiver 91 and a processor 92;
the transceiver 91 is configured to acquire a third signal from the metropolitan area network;
the processor 92 is configured to demap the third signal into a fourth signal according to a first demapping rule, where a transmission rate of the fourth signal is smaller than a transmission rate of the third signal;
the transceiver 91 is configured to send the fourth signal to the client terminal device, where a transmission rate of the fourth signal is less than 1G bit/s.
Optionally, the demapping the third signal into the fourth signal according to the first demapping rule includes:
demapping the third signal into one or more optical channel data unit ODU0 signals, where the third signal is an optical channel transport unit OTUk signal;
wherein the optical path transmission unit OTUk signal is one of an OTU0 signal, an OTU1 signal, an OTU2 signal, an OTU3 signal and an OTU4 signal;
demapping the one or more optical path data unit ODU0 signals into a fourth signal.
The apparatus provided in the embodiment of the present invention may implement the method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Referring to fig. 10, fig. 10 is a block diagram of a communication device according to an embodiment of the present invention.
An embodiment of the present invention further provides a communication device 10, including: the uplink signal transmission method comprises a transceiver 1001, a memory 1002, a processor 1003 and a program stored on the memory 1002 and capable of running on the processor 1003, wherein the processor 1003 executes the program to realize the steps in the uplink signal transmission method when executing the program; or implement the steps in the transmission method of the downlink signal as described above.
The embodiment of the present invention further provides a readable storage medium, where a program is stored on the readable storage medium, and when the program is executed by a processor, the program implements each process of the above-described uplink signal transmission method embodiment; or implementing each process of the above-described downlink signal transmission method embodiment, and achieving the same technical effect, which is not described herein again to avoid repetition. The readable storage medium may be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical memory (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (e.g., ROM, EPROM, EEPROM, nonvolatile memory (NAND FLASH), Solid State Disk (SSD)), etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. With such an understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the methods according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. A transmission method of uplink signals is applied to an inter-domain interface of an optical transport network, and is characterized by comprising the following steps:
receiving a first signal sent by client terminal equipment, wherein the transmission rate of the first signal is less than 1G bit/s;
mapping the first signal into a second signal according to a first mapping rule, wherein the transmission rate of the second signal is greater than that of the first signal;
and sending the second signal to a metropolitan area network.
2. The method according to claim 1, wherein the mapping the first signal to the second signal according to the first mapping rule comprises:
mapping the first signal into one or more optical path data unit ODU0 signals;
mapping the one or more optical channel data unit ODU0 signals into an optical channel transport unit OTUk signal;
wherein the optical path transmission unit OTUk signal is one of an OTU0 signal, an OTU1 signal, an OTU2 signal, an OTU3 signal and an OTU4 signal.
3. The method according to claim 2, wherein the mapping the first signal into one or more optical channel data unit ODU0 signals includes:
mapping the first signal of one or more different types to an ODU0 signal according to a GFP-C protocol.
4. The method for transmitting upstream signals according to claim 2, wherein before said sending the second signal to a metropolitan area network, the method further comprises:
and if the transmission rate of the second signal is less than a first target transmission rate, adjusting the transmission rate of the second signal to the first target transmission rate.
5. A transmission method of downlink signals is applied to an inter-domain interface of an optical transport network, and is characterized by comprising the following steps:
receiving a third signal sent by a metropolitan area network;
demapping the third signal into a fourth signal according to a first demapping rule, wherein a transmission rate of the fourth signal is smaller than a transmission rate of the third signal;
and sending the fourth signal to client terminal equipment, wherein the transmission rate of the fourth signal is less than 1G bit/s.
6. The method according to claim 5, wherein the demapping the third signal into a fourth signal according to the first demapping rule includes:
demapping the third signal into one or more optical channel data unit ODU0 signals, where the third signal is an optical channel transport unit OTUk signal;
wherein the optical path transmission unit OTUk signal is one of an OTU0 signal, an OTU1 signal, an OTU2 signal, an OTU3 signal and an OTU4 signal;
demapping the one or more optical path data unit ODU0 signals into a fourth signal.
7. An apparatus for transmitting an uplink signal, comprising:
the first receiving module is used for receiving a first signal sent by client terminal equipment, and the transmission rate of the first signal is less than 1G bit/s;
a first conversion module, configured to map the first signal into a second signal according to a first mapping rule, where a transmission rate of the second signal is greater than a transmission rate of the first signal;
and the first sending module is used for sending the second signal to a metropolitan area network.
8. A downlink signal transmission apparatus, comprising:
the second receiving module is used for receiving a third signal sent by the metropolitan area network;
a second conversion module, configured to demap the third signal into a fourth signal according to a first demapping rule, where a transmission rate of the fourth signal is less than a transmission rate of the third signal;
and the second sending module is used for sending the fourth signal to the client terminal equipment, and the transmission rate of the fourth signal is less than 1G bit/s.
9. A signal transmission apparatus applied to a metropolitan area network side of an optical transport network, comprising: a processor and a transceiver;
the transceiver is used for acquiring a first signal from client terminal equipment, and the transmission rate of the first signal is less than 1G bit/s;
the processor is configured to map the first signal into a second signal according to a first mapping rule, where a transmission rate of the second signal is greater than a transmission rate of the first signal;
the transceiver is used for transmitting the second signal to a metropolitan area network.
10. A signal transmission apparatus applied to a client terminal device side of an optical transport network, comprising: a processor and a transceiver;
the transceiver is used for acquiring a third signal from a metropolitan area network;
the processor is configured to demap the third signal into a fourth signal according to a first demapping rule, where a transmission rate of the fourth signal is smaller than a transmission rate of the third signal;
and the transceiver is used for sending the fourth signal to client terminal equipment, and the transmission rate of the fourth signal is less than 1G bit/s.
11. A communication device, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the processor is configured to read a program in the memory to implement the steps in the uplink signal transmission method according to any one of claims 1 to 4; or implementing the steps in the method for transmitting a downlink signal according to any of claims 5-6.
12. A readable storage medium storing a program, wherein the program when executed by a processor implements the steps in the method for transmitting an upstream signal according to any one of claims 1 to 4; or implementing the steps in the method for transmitting a downlink signal according to any of claims 5-6.
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