Signal transmission method, network element and communication equipment

Abstract

The present application provides a signal transmission method, network element, and communication device. The method includes: a first network element obtaining a modulation code set and a first signal, the modulation code set including a first modulation code of the first network element; the first network element modulating an operation, maintenance, and management (OAM) signal of the first network element using the first modulation code to obtain a modulated signal; the first network element modulating the modulated signal onto the first signal to obtain a second signal; and the first network element transmitting the second signal to a network element downstream of the first network element. This application can improve the transmission effect of OAM signals between network elements.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a signal transmission method, a network element, and a communication device. Background Art

[0002] In an Optical Transport Network (OTN), to improve network management and maintainability, it is necessary to transmit the Operation Administration and Maintenance (OAM) information of network elements at the optical layer. However, the optical layer OAM information loading capacity of existing OTN network elements is very weak, resulting in poor transmission of OAM information between network elements. Summary of the Invention

[0003] The present application provides a signal transmission method, a network element, and a communication device to solve the problem of poor transmission effect of OAM information between network elements.

[0004] In a first aspect, an embodiment of the present application provides a signal transmission method, including:

[0005] A first network element obtains a modulation code set and a first signal, where the modulation code set includes a first modulation code of the first network element;

[0006] The first network element modulates an operation, maintenance and management (OAM) signal of the first network element using the first modulation code to obtain a modulated signal;

[0007] The first network element modulates the modulated signal onto the first signal to obtain a second signal;

[0008] The first network element transmits the second signal to a network element next to the first network element.

[0009] In a second aspect, an embodiment of the present application further provides a network element, including:

[0010] A first acquisition module, configured to acquire a modulation code set and a first signal, wherein the modulation code set includes a first modulation code of a first network element;

[0011] a signal modulation module, configured to modulate the management, control, and maintenance OAM signal of the first network element using the first modulation code to obtain a modulated signal;

[0012] a signal top-down module, configured to top-down the modulated signal to the first signal to obtain a second signal;

[0013] A transmission module is used to transmit the second signal to the next network element of the first network element.

[0014] In the third aspect, an embodiment of the present application also provides a communication device, including: a transceiver, a memory, a processor, and a program stored on the memory and runnable on the processor; the processor is used to read the program in the memory to implement the steps in the method described in the first aspect of the embodiment of the present application.

[0015] In a fourth aspect, an embodiment of the present application further provides a readable storage medium, on which a program is stored, and when the program is executed by a processor, the steps in the method described in the first aspect of the embodiment of the present application are implemented.

[0016] In an embodiment of the present application, a first network element obtains a modulation code set and a first signal, wherein the modulation code set includes a first modulation code of the first network element; the first network element uses the first modulation code to modulate the operation, maintenance and management (OAM) signal of the first network element to obtain a modulation signal; the first network element tops the modulation signal to the first signal to obtain a second signal; and the first network element transmits the second signal to the next network element of the first network element. By modulating the OAM signal of the first network element and topping the obtained modulation signal to the first signal, the first network element can transmit the second signal including the OAM signal of the first network element to the next network element of the first network element, thereby realizing the transmission of the OAM signal of the first network element between network elements and improving the transmission effect of the OAM signal between network elements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 This is a flow chart of a signal transmission method provided in an embodiment of the present application;

[0019] Figure 2 is a schematic diagram of an optical communication network provided in an embodiment of the present application;

[0020] Figure 3 This is a flow chart of an OAM signal loading method provided in an embodiment of the present application;

[0021] Figure 4 1 is a flow chart of another OAM signal loading method provided in an embodiment of the present application;

[0022] Figure 5 This is a schematic diagram of the structure of a network element provided in an embodiment of the present application;

[0023] Figure 6 It is a structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] The terms "first", "second" etc. in the embodiments of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. In addition, the terms "comprise" and "have" and any deformation thereof are intended to cover non-exclusive inclusions, such as, the process, method, system, product or equipment comprising a series of steps or units need not be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or that are intrinsic to these processes, methods, products or equipment. In addition, "and / or" is used in the present application to represent at least one of connected objects, such as A and / or B and / or C, and represents comprising independent A, independent B, independent C, and A and B all exist, B and C all exist, A and C all exist, and 7 situations that A, B and C all exist.

[0026] See also Figure 1 , Figure 1 This is a flow chart of a signal transmission method provided by an embodiment of the present application. Figure 1 As shown, the following steps are included:

[0027] Step 101: A first network element obtains a modulation code set and a first signal, where the modulation code set includes a first modulation code of the first network element.

[0028] The first network element may be any optical node in the OTN. Accordingly, the first signal may include the original data signal, or may include the OAM signal of the network element preceding the first network element. For example, in some embodiments, the first signal is a signal transmitted from the network element preceding the first network element to the first network element. If the preceding network element needs to modulate the OAM signal, the first signal may include the OAM signal of the preceding network element. If the preceding network element does not need to modulate the OAM signal, the first signal does not include the OAM signal of the preceding network element. In some embodiments, when the first network element is the first network element in which the signal is transmitted, the first signal is the original data signal that needs to be transmitted.

[0029] It can be understood that the modulation codes in the above modulation code set are orthogonal to each other, and the modulation codes in the above modulation code set can correspond one-to-one to the network elements. In this way, for the modulation code set obtained by the first network element, the above first network element can use the first modulation code of the first network element to modulate the signal, and can also use the modulation code of other network elements to demodulate the signal.

[0030] Step 102: The first network element modulates the operation, maintenance and management (OAM) signal of the first network element using the first modulation code to obtain a modulated signal.

[0031] Optionally, the first modulation code includes a spread spectrum code or a frequency hopping code;

[0032] The first network element modulating the OAM signal of the first network element using the first modulation code includes:

[0033] In a case where the first modulation code includes a spread spectrum code, the first network element performs spread spectrum modulation on the OAM signal of the first network element using the first modulation code; or,

[0034] In a case where the first modulation code includes a frequency hopping code, the first network element performs frequency hopping modulation on the OAM signal of the first network element using the first modulation code.

[0035] It can be understood that the types of modulation codes in the above modulation code set are consistent. For example, when the above first modulation code belongs to a spread spectrum code, the modulation codes in the above modulation code set all belong to spread spectrum codes; when the above first modulation code belongs to a frequency hopping code, the modulation codes in the above modulation code set all belong to frequency hopping codes.

[0036] It can be understood that when the above-mentioned first network element modulates the OAM signal of the above-mentioned first network element, it can use spread spectrum modulation or frequency hopping modulation. The specific modulation code used corresponds to the modulation method. After the above-mentioned OAM signal is spread spectrum modulated or frequency hopping modulated, the above-mentioned modulated signal is obtained.

[0037] Step 103: The first network element adds the modulated signal to the first signal to obtain a second signal.

[0038] Step 104: The first network element transmits the second signal to a network element next to the first network element.

[0039] As can be understood, the optical layer OAM signal has a low power value and is easily drowned out by noise. By modulating the OAM signal and then adding it to the first signal to obtain the second signal, the second signal transmitted between the first network element and the next network element includes the OAM signal of the first network element, thereby allowing the OAM signal of the first network element to be transmitted between the first network element and the next network element. This allows the transmission of optical layer OAM signals between network elements in the OTN, and the OAM signal of any network element can be transmitted to the next network element using this signal transmission method.

[0040] Among them, the signal can be transmitted in the OTN through a transmission channel composed of multiple network elements. The next network element of the above-mentioned first network element is the next network element that the above-mentioned first signal needs to pass through after passing through the above-mentioned first network element during the transmission process. The next network element of the above-mentioned first network element is adjacent to the above-mentioned first network element in the transmission channel.

[0041] In an embodiment of the present application, a first network element obtains a modulation code set and a first signal, wherein the modulation code set includes a first modulation code of the first network element; the first network element uses the first modulation code to modulate the operation, maintenance and management (OAM) signal of the first network element to obtain a modulation signal; the first network element tops the modulation signal to the first signal to obtain a second signal; and the first network element transmits the second signal to the next network element of the first network element. By modulating the OAM signal of the first network element and topping the obtained modulation signal to the first signal, the first network element can transmit the second signal including the OAM signal of the first network element to the next network element of the first network element, thereby realizing the transmission of the OAM signal of the first network element between network elements and improving the transmission effect of the OAM signal between network elements.

[0042] In addition, through the above signal transmission method, the OAM signal of the first network element can be transmitted to the next network element, that is, the OAM signal can be transmitted between the network elements in the OTN, thereby realizing parameter monitoring of optical layer performance and further realizing flexible operation and maintenance of the network.

[0043] Optionally, the first signal includes an original data signal, and the modulation code set further includes second modulation codes of multiple network elements located in the same transmission channel as the first network element;

[0044] In a case where the first network element is not the first network element to transmit the original data signal in the transmission channel, after the first network element obtains the modulation code set and the first signal, the method further includes:

[0045] The first network element demodulates the first signal using the second modulation code of the second network element to obtain the OAM signal of the second network element, and the second network element is any network element among the multiple network elements to which the original data signal is transmitted before being transmitted to the first network element. In some embodiments, when the first network element is not the first network element to transmit the original data signal in the above-mentioned transmission channel, there is at least one second network element located before the above-mentioned first network element in the above-mentioned transmission channel. For example, the above-mentioned transmission channel includes four network elements: network element 1, network element 2, network element 3 and network element 4, and the transmission order of the original data signal between the above-mentioned four network elements is: network element 1, network element 2, network element 3 and network element 4. If the above-mentioned first network element is network element 3, the above-mentioned second network element can be network element 1 or network element 2. Taking the above-mentioned second network element as network element 1 as an example, after network element 3 (the first network element) obtains the first signal sent by network element 2, it can use the modulation code set The second modulation code of network element 1 (the second network element) in the modulation code set is demodulated to obtain the OAM signal of network element 1 (the second network element); taking network element 2 as the above-mentioned second network element as an example, after network element 3 (the first network element) obtains the first signal sent by network element 2 (the second network element), it can use the second modulation code of network element 2 (the second network element) in the modulation code set to demodulate, thereby obtaining the OAM signal of network element 2 (the second network element), that is, the above-mentioned second network element can be any network element located before the above-mentioned first network element in the above-mentioned transmission channel, and the above-mentioned first network element can obtain the OAM signal of any network element located before the first network element in the above-mentioned transmission channel by using the corresponding modulation code. That is, the above-mentioned first signal obtained by the above-mentioned first network element may include the OAM signal of the above-mentioned second network element, and the OAM signal of the above-mentioned second network element can be obtained by demodulating the above-mentioned first signal using the second modulation code corresponding to the above-mentioned second network element. It can be understood that in the above transmission channel, if there are multiple second network elements located before the above first network element, the above first network element can obtain the OAM signals of the above multiple second network elements by demodulating the above first signal.

[0046] In this embodiment, when the first network element is not the network element that first transmits the original data signal in the transmission channel, the first network element uses the second modulation code of the second network element to demodulate the first signal to obtain the OAM signal of the second network element; that is, the first network element can obtain the OAM signals of other network elements by demodulating the first signal, thereby realizing the loading of the OAM signals of each network element in the first signal by the first network element.

[0047] Optionally, after the first network element obtains the modulation code set and the first signal in step 101, the method may further include the following steps:

[0048] The first network element obtains OAM signals of multiple second network elements;

[0049] The first network element determines, based on the OAM signals of the plurality of second network elements, a transmission order of the original data signal in the plurality of second network elements;

[0050] The first network element determines a topological relationship between the plurality of second network elements and the first network element based on the transmission order.

[0051] It can be understood that the first network element can demodulate the first signal by using the modulation code corresponding to each second network element, thereby obtaining the OAM signal of each second network element.

[0052] The first network element can obtain the OAM signals of all network elements in the transmission channel that are transmitted before being transmitted to the first network element by demodulating the first signal. For example, when the first network element is the third network element to transmit in the transmission channel, the OAM signals of the two network elements before the first network element can be obtained by demodulating the first signal. It is understood that the transmission order of the original data signal in each network element can be determined by the OAM signal of each network element. For example, the order of the two network elements in the transmission channel can be determined by the OAM signals of the two network elements, thereby determining the topological relationship between the first network element and the two network elements.

[0053] In this embodiment, the first network element determines the transmission order of the original data signal in the multiple second network elements based on the acquired OAM signals of the multiple second network elements, and further determines the topological relationship between the multiple second network elements and the first network element. That is, the first network element can determine the topological relationship between the network element located before the first network element in the transmission channel and the first network element based on the acquired OAM signal. The corresponding network element can be located through the OAM signal, which facilitates the management of the network.

[0054] Optionally, the OAM signal includes a timestamp;

[0055] The first network element determining, based on the OAM signals of the plurality of second network elements, a transmission order of the original data signal in the plurality of second network elements may specifically include:

[0056] The first network element obtains, based on the OAM signals of the plurality of second network elements, timestamps corresponding to the plurality of second network elements;

[0057] The first network element determines a transmission order of the original data signal in the plurality of second network elements based on the timestamps corresponding to the plurality of second network elements.

[0058] It can be understood that by comparing the timestamps in the OAM signals of each of the above-mentioned second network elements, the order in which the signals are transmitted to each network element in the above-mentioned transmission channel can be determined, that is, the order of the timestamps is the order of the corresponding network elements in the above-mentioned transmission channel, thereby determining the transmission order of the above-mentioned original data signals in the above-mentioned multiple second network elements.

[0059] In this embodiment, the first network element obtains the timestamps corresponding to the multiple second network elements based on the OAM signals of the multiple second network elements; the first network element determines the transmission order of the original data signal in the multiple second network elements based on the timestamps corresponding to the multiple second network elements, that is, the timestamps corresponding to the multiple second network elements can be directly obtained through the OAM signal, thereby determining the transmission order of the original data signal in the multiple second network elements.

[0060] Optionally, the first network element determining, based on the OAM signals of the multiple second network elements, the transmission order of the original data signal in the multiple second network elements may specifically include:

[0061] The first network element obtains, based on the OAM signals of the plurality of second network elements, a signal-to-noise ratio of the OAM signals of the plurality of second network elements;

[0062] The first network element determines a transmission order of the original data signal in the plurality of second network elements based on a signal-to-noise ratio of the OAM signals of the plurality of second network elements.

[0063] It is understood that in an OTN, optical amplifiers exist between network elements. When optical signals pass through optical amplifiers, they increase noise and reduce the optical signal-to-noise ratio (OSNR). Therefore, for the OAM signals obtained from the multiple second network elements, the signal-to-noise ratios of the OAM signals of each network element can be calculated and compared. The network element corresponding to the OAM signal with a smaller signal-to-noise ratio can be determined as the network element closer to the front of the transmission channel, and the network element corresponding to the OAM signal with a larger signal-to-noise ratio can be determined as the network element closer to the back of the transmission channel. The reference network element for determining whether a network element is closer to the front or back is the first network element. Comparing the signal-to-noise ratios of the OAM signals of each network element can be performed by comparing the signal-to-noise ratios of each network element pairwise, or by ranking the signal-to-noise ratios of the OAM signals of all network elements in order of magnitude to obtain a signal-to-noise ratio comparison result.

[0064] In this implementation manner, the first network element may determine the transmission order of the original data signal in the plurality of second network elements based on the signal-to-noise ratio of the OAM signals of the plurality of second network elements.

[0065] Optionally, the first network element determines, based on the OAM signals of the multiple second network elements, a transmission order of the original data signal in the multiple second network elements, specifically including:

[0066] The first network element obtains dispersion characteristics of management, control and maintenance signals of the plurality of second network elements based on the OAM signals of the plurality of second network elements;

[0067] The first network element determines a transmission order of the original data signal in the plurality of second network elements based on dispersion characteristics of the OAM signals of the plurality of second network elements.

[0068] It can be understood that the longer the distance the optical signal is transmitted, the greater the dispersion generated. The present application uses dispersion characteristics to represent the dispersion phenomenon of the above-mentioned optical signal. For the OAM signals obtained from the above-mentioned multiple second network elements, the dispersion characteristics of the OAM signals of each network element can be calculated and compared respectively. Among them, the network element corresponding to the OAM signal with a smaller dispersion characteristic can be determined as the network element closer to the front in the above-mentioned transmission channel, and the network element corresponding to the OAM signal with a larger dispersion characteristic can be determined as the network element closer to the back in the above-mentioned transmission channel. The reference network element for judging whether a network element is closer to the front or back is the above-mentioned first network element. That is, by comparing the dispersion characteristics of the OAM signals of multiple second network elements, the order of distance between each second network element in the multiple second network elements and the above-mentioned first network element can be determined, that is, the transmission order of the signal in the above-mentioned multiple second network elements can be determined.

[0069] In this implementation, the transmission order of the original data signal in the plurality of second network elements may be determined based on the dispersion characteristics of the OAM signals of the plurality of second network elements.

[0070] The various optional implementation methods introduced in the embodiments of the present application can be implemented in combination with each other or separately if they do not conflict with each other, and the embodiments of the present application do not limit this.

[0071] For ease of understanding, the following examples are provided:

[0072] This application provides a method for loading optical layer OAM signals, such as Figure 2 As shown, each optical node in the OTN can load the optical layer OAM signal.

[0073] When the above method is applied to a code division multiplexing access (CDMA) system, Figure 3 As shown, the specific process may include the following:

[0074] The management and control system generates CDMA spreading codes for each network element (first network element, last network element or middle network element);

[0075] The management and control system allocates CDMA spreading codes to each network element;

[0076] The first network element A can modulate the OAM signal at the optical layer: the OAM signal x(A) of network element A is loaded on the spread spectrum code c(A) and modulated on top of the data signal. Where H is the channel transmission matrix, i.e. y = c(A)x(A);

[0077] The intermediate network element B can modulate the OAM signal at the optical layer: the OAM signal x(B) of the network element B is loaded on the spread spectrum code c(B) and modulated on top of the data signal. That is, y = c(A)x(A) + c(B)x(B);

[0078] The intermediate network element C can modulate the OAM signal at the optical layer: the OAM signal x(C) of the network element C is loaded on the spread spectrum code c(C) and modulated on top of the data signal. That is, y=c(A)x(A)+c(B)x(B)+c(C)x(C);

[0079] The intermediate network element D can modulate the OAM signal at the optical layer: the OAM signal x(D) of the network element D is loaded on the spread spectrum code c(D) and modulated on top of the data signal. That is, y=c(A)x(A)+c(B)x(B)+c(C)x(C)+c(D)x(D);

[0080] When demodulating the OAM signal, the intermediate network element B can demodulate the OAM signal: the network element B can demodulate the OAM signal x(A) of the first network element A, x(A) = yc(A);

[0081] When demodulating the OAM signal, the intermediate network element C can demodulate the OAM signal: the network element C can demodulate the OAM signal x(A) of the first network element A, x(A)=yc(A), and can also demodulate the OAM signal x(B) of the intermediate network element B, x(B)=yc(B);

[0082] When demodulating the OAM signal, the intermediate network element D can demodulate the OAM signal: the network element D can demodulate the OAM signal x(A) of the first network element A, where x(A)=yc(A), and can also demodulate the OAM signal x(B) of the intermediate network element B, where x(B)=yc(B), and can also demodulate the OAM signal x(C) of the intermediate network element C, where x(C)=yc(C).

[0083] When demodulating OAM signals, the last network element E can demodulate OAM signals: network element E can demodulate the OAM signal x(A) of the first network element A, where x(A) = yc(A). It can also demodulate the OAM signal x(B) of the intermediate network element B, where x(B) = yc(B), the OAM signal x(C) of the intermediate network element C, where x(C) = yc(C), and the OAM signal x(D) of the intermediate network element D, where x(D) = yc(D).

[0084] Where y represents the OAM modulation signal of each network element, c(A), c(B), c(C) and c(D) represent the OAM signals of each network element respectively, c(A), c(B), c(C), c(D) and C(E) represent the spreading codes corresponding to each network element respectively, and c(A), c(B), c(C), c(D) and C(E) are orthogonal to each other, such as c(A) T c(B)=0.

[0085] When the above method is applied to a frequency-hopping spread spectrum system (FHSS), Figure 4 As shown, the specific process may include the following:

[0086] The management and control system generates frequency hopping codes for each network element (first network element, last network element or intermediate network element);

[0087] The management and control system allocates frequency hopping codes to each network element;

[0088] The first network element A can modulate the OAM signal at the optical layer: the OAM signal x(A) of network element A is loaded on the frequency hopping code c(A) and modulated on top of the data signal. Where H is the channel transmission matrix, i.e. y = c(A)x(A);

[0089] The intermediate network element B can modulate the OAM signal at the optical layer: the OAM signal x(B) of the network element B is loaded on the frequency hopping code c(B) and modulated on top of the data signal. That is, y = c(A)x(A) + c(B)x(B);

[0090] The intermediate network element C can modulate the OAM signal at the optical layer: the OAM signal x(C) of the network element C is loaded on the frequency hopping code c(C) and modulated on top of the data signal. That is, y=c(A)x(A)+c(B)x(B)+c(C)x(C);

[0091] The intermediate network element D can modulate the OAM signal at the optical layer: the OAM signal x(D) of the network element D is loaded on the frequency hopping code c(D) and modulated on top of the data signal. That is, y=c(A)x(A)+c(B)x(B)+c(C)x(C)+c(D)x(D);

[0092] When demodulating the OAM signal, the intermediate network element B can demodulate the OAM signal: the network element B can demodulate the OAM signal x(A) of the first network element A, x(A) = yc(A);

[0093] When demodulating the OAM signal, the intermediate network element C can demodulate the OAM signal: the network element C can demodulate the OAM signal x(A) of the first network element A, x(A)=yc(A), and can also demodulate the OAM signal x(B) of the intermediate network element B, x(B)=yc(B);

[0094] When demodulating the OAM signal, the intermediate network element D can demodulate the OAM signal: the network element D can demodulate the OAM signal x(A) of the first network element A, where x(A)=yc(A), and can also demodulate the OAM signal x(B) of the intermediate network element B, where x(B)=yc(B), and can also demodulate the OAM signal x(C) of the intermediate network element C, where x(C)=yc(C).

[0095] When demodulating OAM signals, the last network element E can demodulate OAM signals: network element E can demodulate the OAM signal x(A) of the first network element A, where x(A) = yc(A). It can also demodulate the OAM signal x(B) of the intermediate network element B, where x(B) = yc(B), the OAM signal x(C) of the intermediate network element C, where x(C) = yc(C), and the OAM signal x(D) of the intermediate network element D, where x(D) = yc(D).

[0096] Where y represents the OAM modulation signal of each network element, c(A), c(B), c(C) and c(D) represent the OAM signals of each network element respectively, c(A), c(B), c(C), c(D) and C(E) represent the frequency hopping codes corresponding to each network element respectively, and c(A), c(B), c(C), c(D) and C(E) are mutually orthogonal, such as c(A) T c(B)=0.

[0097] After any network element obtains the OAM signal of the previous network element by demodulating the signal, the present application also provides a method for determining the distance of each network element based on the OAM signal, which can specifically include the following methods:

[0098] (1) Determine the distance of the network element based on the timestamp:

[0099] The timestamp of each node is loaded onto the OAM signal, and then demodulated at the receiving node to obtain the timestamp of the corresponding node, so as to determine the order in which the optical nodes pass.

[0100] (2) Determine the distance of the network element based on the signal-to-noise ratio of the OAM signal:

[0101] When optical signals pass through optical amplifiers, they increase noise and reduce the OSNR. At the receiving node, the signal's OSNR (Optical Signal Noise Ratio) is calculated. Nodes with lower SNRs are closer to the front, while nodes with higher SNRs are closer to the back. This helps determine the order in which nodes the signal passes through, and the distance to the network element can be determined from this order.

[0102] (3) Determine the distance of the network element based on the dispersion of the OAM signal:

[0103] As optical signals travel longer distances, their dispersion increases. At the receiving node, the signal dispersion is calculated. Nodes with greater dispersion are closer to the front, while those with less dispersion are closer to the back. This helps determine the order in which nodes are passed, and the order in which nodes are passed can be used to determine the proximity of network elements.

[0104] See also Figure 5 , Figure 5 This is a schematic diagram of the structure of a network element provided in an embodiment of the present application. Figure 5 As shown, the network element 500 includes:

[0105] A first acquisition module 501 is configured to acquire a modulation code set and a first signal, where the modulation code set includes a first modulation code of a first network element;

[0106] A signal modulation module 502 is configured to modulate the management, control, and maintenance OAM signal of the first network element using the first modulation code to obtain a modulated signal;

[0107] a signal top-modulation module 503, configured to top-modulate the modulated signal to the first signal to obtain a second signal;

[0108] The transmission module 504 is configured to transmit the second signal to a network element next to the first network element.

[0109] Optionally, the first modulation code includes a spread spectrum code or a frequency hopping code;

[0110] The signal modulation module 502 may specifically include:

[0111] a first modulation unit configured to, when the first modulation code includes a spread spectrum code, perform spread spectrum modulation on the OAM signal of the first network element using the first modulation code; or

[0112] The second modulation unit is configured to perform frequency hopping modulation on the OAM signal of the first network element using the first modulation code when the first modulation code includes a frequency hopping code.

[0113] Optionally, the first signal includes an original data signal, and the modulation code set further includes second modulation codes of multiple network elements located in the same transmission channel as the first network element;

[0114] In the case where the first network element is not the first network element to transmit the original data signal in the transmission channel, the network element 500 may further include:

[0115] A signal demodulation module is used to demodulate the first signal using a second modulation code of a second network element to obtain an OAM signal of the second network element, where the second network element is any network element among the multiple network elements to which the original data signal is transmitted before being transmitted to the first network element.

[0116] Optionally, the network element 500 may further include:

[0117] A second acquisition module, configured to acquire OAM signals of multiple second network elements;

[0118] A first determining module, configured to determine a transmission order of the original data signal in the plurality of second network elements based on the OAM signals of the plurality of second network elements;

[0119] A second determining module is configured to determine a topological relationship between the plurality of second network elements and the first network element based on the transmission order.

[0120] Optionally, the OAM signal includes a timestamp;

[0121] The first determining module may specifically include:

[0122] A first acquiring unit, configured to acquire timestamps corresponding to the multiple second network elements based on the OAM signals of the multiple second network elements;

[0123] The first determining unit is configured to determine a transmission order of the original data signal in the multiple second network elements based on timestamps corresponding to the multiple second network elements.

[0124] Optionally, the first determining module may further include:

[0125] A second acquiring unit, configured to acquire a signal-to-noise ratio of the OAM signals of the plurality of second network elements based on the OAM signals of the plurality of second network elements;

[0126] The second determining unit is configured to determine a transmission order of the original data signal in the plurality of second network elements based on a signal-to-noise ratio of the OAM signals of the plurality of second network elements.

[0127] Optionally, the first determining module may further include:

[0128] a third acquiring unit, configured to acquire dispersion characteristics of management, control and maintenance signals of the plurality of second network elements based on the OAM signals of the plurality of second network elements;

[0129] The third determining unit is configured to determine a transmission order of the original data signal in the plurality of second network elements based on the dispersion characteristics of the OAM signals of the plurality of second network elements.

[0130] The network element 500 can realize the embodiment of the present application Figure 1 The various processes of the method embodiment and the achievement of the same beneficial effects are not described again here to avoid repetition.

[0131] The embodiment of the present application also provides a communication device. Figure 1 The image recognition method shown is similar, so the implementation of the communication device can refer to the implementation of the method, and the repeated parts will not be repeated. Figure 6 As shown, the communication device of the embodiment of the present application includes: a processor 600, which is used to read the program in the memory 620 and perform the following process:

[0132] Acquire a modulation code set and a first signal, where the modulation code set includes a first modulation code of a first network element;

[0133] Modulating an operation, maintenance, and management (OAM) signal of the first network element using the first modulation code to obtain a modulated signal;

[0134] Adding the modulated signal to the first signal to obtain a second signal;

[0135] transmitting the second signal to a network element next to the first network element;

[0136] The transceiver 610 is configured to receive and send data under the control of the processor 600 .

[0137] Among them, Figure 6 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 600 and memory represented by memory 620. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 610 may be a plurality of components, i.e., a transmitter and a transceiver, providing a unit for communicating with various other devices on a transmission medium. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 when performing operations.

[0138] Optionally, the first modulation code includes a spread spectrum code or a frequency hopping code;

[0139] The modulating the OAM signal of the first network element by using the first modulation code may specifically include:

[0140] In a case where the first modulation code includes a spread spectrum code, performing spread spectrum modulation on the OAM signal of the first network element using the first modulation code; or,

[0141] In a case where the first modulation code includes a frequency hopping code, the first modulation code is used to perform frequency hopping modulation on the OAM signal of the first network element.

[0142] Optionally, the first signal includes an original data signal, and the modulation code set further includes second modulation codes of multiple network elements located in the same transmission channel as the first network element;

[0143] When the first network element is not the first network element to transmit the original data signal in the transmission channel, the processor 600 is further configured to read a program in the memory 620 and execute the following steps:

[0144] The first signal is demodulated using a second modulation code of a second network element to obtain an OAM signal of the second network element, where the second network element is any network element among the multiple network elements to which the original data signal is transmitted before being transmitted to the first network element.

[0145] Optionally, the processor 600 is further configured to read a program in the memory 620 and execute the following steps:

[0146] Obtaining OAM signals of multiple second network elements;

[0147] determining, based on the OAM signals of the plurality of second network elements, a transmission order of the original data signal in the plurality of second network elements;

[0148] A topological relationship between the plurality of second network elements and the first network element is determined based on the transmission order.

[0149] Optionally, the OAM signal includes a timestamp;

[0150] The determining, based on the OAM signals of the multiple second network elements, the transmission order of the original data signal in the multiple second network elements may specifically include:

[0151] Obtaining timestamps corresponding to the multiple second network elements based on the OAM signals of the multiple second network elements;

[0152] Based on the timestamps corresponding to the multiple second network elements, a transmission order of the original data signal in the multiple second network elements is determined.

[0153] Optionally, determining the transmission order of the original data signal in the multiple second network elements based on the OAM signals of the multiple second network elements may specifically include:

[0154] Acquire, based on the OAM signals of the plurality of second network elements, a signal-to-noise ratio of the OAM signals of the plurality of second network elements;

[0155] Based on the signal-to-noise ratios of the OAM signals of the multiple second network elements, a transmission order of the original data signal in the multiple second network elements is determined.

[0156] Optionally, determining the transmission order of the original data signal in the multiple second network elements based on the OAM signals of the multiple second network elements may specifically include:

[0157] acquiring dispersion characteristics of management, control and maintenance signals of the plurality of second network elements based on the OAM signals of the plurality of second network elements;

[0158] Based on the dispersion characteristics of the OAM signals of the multiple second network elements, a transmission order of the original data signal in the multiple second network elements is determined.

[0159] The communication device provided in the embodiment of the present application can perform the above Figure 1 The implementation principle and technical effect of the method embodiment shown are similar, and this embodiment will not be repeated here.

[0160] The present application also provides a readable storage medium in which a program is stored. When the program is executed by a processor, the following is achieved: Figure 1 The various processes of the method embodiment in the embodiment can achieve the same technical effect, and to avoid repetition, they will not be described here.

[0161] In the several embodiments provided in this application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection of some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0162] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may be physically included separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0163] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to execute some steps of the sending and receiving methods described in various embodiments of the present application. The aforementioned storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program code.

[0164] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A signal transmission method, characterized in that: include: A first network element obtains a modulation code set and a first signal, where the modulation code set includes a first modulation code of the first network element; The first network element modulates an operation, maintenance and management (OAM) signal of the first network element using the first modulation code to obtain a modulated signal; The first network element modulates the modulated signal onto the first signal to obtain a second signal; The first network element transmits the second signal to a network element next to the first network element; The first signal includes an original data signal, and the modulation code set further includes second modulation codes of multiple network elements located in the same transmission channel as the first network element; In a case where the first network element is not the first network element to transmit the original data signal in the transmission channel, after the first network element obtains the modulation code set and the first signal, the method further includes: The first network element demodulates the first signal using a second modulation code of a second network element to obtain an OAM signal of the second network element, where the second network element is any network element among the multiple network elements to which the original data signal is transmitted before being transmitted to the first network element.

2. The method according to claim 1, wherein The first modulation code includes a spread spectrum code or a frequency hopping code; The first network element modulating the OAM signal of the first network element using the first modulation code includes: In a case where the first modulation code includes a spread spectrum code, the first network element performs spread spectrum modulation on the OAM signal of the first network element using the first modulation code; or, In a case where the first modulation code includes a frequency hopping code, the first network element performs frequency hopping modulation on the OAM signal of the first network element using the first modulation code.

3. The method according to claim 1, wherein After the first network element obtains the modulation code set and the first signal, the method further includes: The first network element obtains OAM signals of multiple second network elements; The first network element determines, based on the OAM signals of the plurality of second network elements, a transmission order of the original data signal in the plurality of second network elements; The first network element determines a topological relationship between the plurality of second network elements and the first network element based on the transmission order.

4. The method according to claim 3, wherein The OAM signal includes a timestamp; The first network element determining, based on the OAM signals of the plurality of second network elements, a transmission order of the original data signal in the plurality of second network elements, comprising: The first network element obtains, based on the OAM signals of the plurality of second network elements, timestamps corresponding to the plurality of second network elements; The first network element determines a transmission order of the original data signal in the plurality of second network elements based on the timestamps corresponding to the plurality of second network elements.

5. The method according to claim 3, wherein The first network element determining, based on the OAM signals of the plurality of second network elements, a transmission order of the original data signal in the plurality of second network elements, comprising: The first network element obtains, based on the OAM signals of the plurality of second network elements, a signal-to-noise ratio of the OAM signals of the plurality of second network elements; The first network element determines a transmission order of the original data signal in the plurality of second network elements based on a signal-to-noise ratio of the OAM signals of the plurality of second network elements.

6. The method according to claim 3, wherein The first network element determining, based on the OAM signals of the plurality of second network elements, a transmission order of the original data signal in the plurality of second network elements, comprising: The first network element obtains dispersion characteristics of management, control and maintenance signals of the plurality of second network elements based on the OAM signals of the plurality of second network elements; The first network element determines a transmission order of the original data signal in the plurality of second network elements based on dispersion characteristics of the OAM signals of the plurality of second network elements.

7. A network element, characterized in that: include: A first acquisition module, configured to acquire a modulation code set and a first signal, wherein the modulation code set includes a first modulation code of a first network element; a signal modulation module, configured to modulate the management, control, and maintenance OAM signal of the first network element using the first modulation code to obtain a modulated signal; a signal top-down module, configured to top-down the modulated signal to the first signal to obtain a second signal; a transmission module, configured to transmit the second signal to a network element next to the first network element; The first signal includes an original data signal, and the modulation code set further includes second modulation codes of multiple network elements located in the same transmission channel as the first network element; In a case where the first network element is not the first network element to transmit the original data signal in the transmission channel, after the first network element obtains the modulation code set and the first signal, the network element further includes: A signal demodulation module is used to demodulate the first signal using a second modulation code of a second network element to obtain an OAM signal of the second network element, where the second network element is any network element among the multiple network elements to which the original data signal is transmitted before being transmitted to the first network element.

8. A communication device comprising: A transceiver, a memory, a processor, and a program stored in the memory and executable on the processor; characterized in that: The processor is configured to read a program in a memory to implement the steps in the method according to any one of claims 1 to 6.

9. A readable storage medium, characterized in that: The readable storage medium stores a program, and when the program is executed by a processor, the steps in the method according to any one of claims 1 to 6 are implemented.

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