Communication method, device, system, and storage medium

Abstract

The present application provides a communication method, a device, a system, and a storage medium. The communication method applied to a communication system comprises: obtaining a plurality of optical power loss levels by splitting an optical path loss level formed by a first loss value and a second loss value of an optical distribution network of a passive optical network system, wherein the minimum value and the maximum value of each optical power loss level are both greater than or equal to the first loss value, and are both less than or equal to the second loss value, the first loss value is the minimum optical path loss of the optical distribution network, and the second loss value is the maximum optical path loss of the optical distribution network; and accessing different first communication devices according to different optical power loss levels in the passive optical network system.

Description

Communication method, device, system and storage medium Technical Field

[0001] The present application relates to the field of communication technologies, for example, to communication methods, devices, systems and storage media. Background Art

[0002] In a passive optical network (PON), the power loss between the optical line terminal (OLT) and the optical network unit (ONU) varies depending on the distance across the optical distribution network (ODN), the splitting ratio, and the number of splitter cascades. Each transmitter in the OLT has different transmission margins. This results in significant variations in the optical power received by ONUs deployed at different locations under the same standards, leading to uneven reception, underutilized network resources, and overall high PON system network costs, as well as high energy consumption and low utilization.

[0003] Summary of the Invention

[0004] The embodiments of the present application provide a communication method, device, system, and storage medium, which improve the communication capability of the system and reduce the overall cost and power consumption of the system while ensuring the quality of user service.

[0005] The present invention provides a communication method for a communication system, including:

[0006] Several optical power loss levels are separated from the optical path loss level composed of the first loss value and the second loss value of the optical distribution network of the passive optical network system; the minimum value and the maximum value of each of the optical power loss levels are greater than or equal to the first loss value, and are less than or equal to the second loss value; the first loss value is the minimum optical path loss of the optical distribution network, and the second loss value is the maximum optical path loss of the optical distribution network; different first communication devices are accessed in the passive optical network system according to different optical power loss levels.

[0007] An embodiment of the present application provides a communication method, applied to a communication system, including:

[0008] Several optical power loss levels are separated from the optical path loss level composed of the first loss value and the second loss value of the optical distribution network of the passive optical network system; the minimum value and the maximum value of each of the optical power loss levels are greater than or equal to the first loss value, and are less than or equal to the second loss value; the first loss value is the minimum optical path loss of the optical distribution network, and the second loss value is the maximum optical path loss of the optical distribution network; the configuration content of the second communication device is determined according to different optical power level indication information; wherein the optical power level indication information is used to indicate the optical power loss level adopted by the first communication device.

[0009] An embodiment of the present application provides a first communication device, comprising: a memory, and one or more processors; the memory is configured to store one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors implement the communication method described in any of the above embodiments.

[0010] An embodiment of the present application provides a second communication device, comprising: a memory, and one or more processors; the memory is configured to store one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors implement the communication method described in any of the above embodiments.

[0011] An embodiment of the present application provides a communication system, including: a first communication device and a second communication device; the receiving sensitivity of the first communication device corresponds to at least one optical power loss level; or the optical power transmitted by the transmitter of the first communication device corresponds to the optical power loss level; the first communication device reports the optical power loss level and receives the configuration content sent by the second communication device; the second communication device determines and sends the configuration content of the first communication device according to the optical power loss level of each first communication device; the second communication device performs corresponding configuration and data transmission on itself according to the optical power loss level of each first communication device.

[0012] An embodiment of the present application provides a storage medium storing a computer program. When the computer program is executed by a processor, the communication method described in any of the above embodiments is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG1 is a flow chart of a communication method provided in an embodiment of the present application;

[0014] FIG2 is a flow chart of another communication method provided in an embodiment of the present application;

[0015] FIG3 is a schematic diagram of the structural configuration of a PON system provided in an embodiment of the present application;

[0016] FIG4 is a schematic diagram of a mapping relationship between an optical power loss level and a receiving sensitivity provided in an embodiment of the present application;

[0017] 5 is a schematic diagram of a mapping relationship between an optical power loss level and a receiving sensitivity between an OLT and an ONU according to an embodiment of the present application;

[0018] FIG6 is a schematic diagram of a configuration of a PON system divided by optical power loss level according to an embodiment of the present application;

[0019] FIG7 is a structural block diagram of a communication device provided in an embodiment of the present application;

[0020] FIG8 is a structural block diagram of another communication device provided in an embodiment of the present application;

[0021] FIG9 is a structural block diagram of a communication system provided in an embodiment of the present application;

[0022] FIG10 is a schematic structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] The following describes the embodiments of the present application in conjunction with the accompanying drawings. The following describes the present application in conjunction with the accompanying drawings, and the examples are only used to explain the present application.

[0024] PON systems use optical splitters to split a single transmitted optical signal into multiple optical paths for transmission, enabling multi-user sharing of network resources. Furthermore, PON systems define multiple optical link budget levels to address varying network requirements and application scenarios, including transmission rates, transmission distances, number of users, and bandwidth resources. Generally speaking, a higher link budget level requires greater fiber length and the number of optical splitters required, resulting in longer transmission distances and higher costs.

[0025] In a PON system, a fixed downstream rate is used, such as 49.7664 Gbit / s in G.9804.3. For the two different optical power budget levels (N1 / C+) defined in the standard, in the downstream direction, the sensitivity requirements for the ONU receiver are exactly the same, except that the C+ level at the OLT transmitter is 3dB higher than the N1 level. In the upstream direction, for the same line rate, the ONU transmitter optical power requirements are exactly the same, except that the C+ level at the OLT receiver is 3dB higher than the N1 level. However, different upstream line rates may correspond to different transmit optical powers and receive sensitivities.

[0026] Although PON systems have multiple different optical power budgets, their corresponding coverage distances are generally fixed, such as DD20 (20 km) or DD40 (40 km), and they all use the same line coding, such as Non-Return-to-Zero (NRZ) line coding. Because the ONU receivers in PON systems, whether N1 or C+, use a single sensitivity standard, all ONUs must meet the same specifications for receiver design. This sensitivity standard is based on the worst-case ODN scenario, resulting in the optical power received by most ONUs far exceeding the required sensitivity. Furthermore, under the same optical power budget, all ONU transmitters are set at the same average optical power transmission level, without considering the actual power loss between the OLT and the ONUs. This not only increases the cost of the overall PON system but also hinders system power reduction.

[0027] In order to improve the PON system capabilities while ensuring basic user service quality and reducing overall system cost and power consumption, the present application proposes a communication method, system and device for flexibly configuring the structure of the PON system.

[0028] In the Common Transmission Convergence (ComTC) standard, there are two definitions related to power indication. One is the ODN class (occupying 3 bits) of the OC body data block in the downlink physical synchronization block (PSBd) in the downlink frame header, which is used to identify the ODN levels at which the transmitters and receivers defined in the physical layer standard can operate; the other is the minimum indication (ONURssiMin) and maximum indication (ONURssiMax) of the ONU received signal strength defined in the Burst_Profile Message. During the ONU activation and registration phases, when the optical power signal transmitted by the ONU is received by the OLT channel termination (CT), the OLT measures the received signal strength indicator (RSSI) and the bit error rate it receives. When the RSSI and the bit error rate meet the registration conditions, the OLT sends a SN_ONU physical layer operations, administration, and maintenance (PLOAM) message to the ONU. Only when the ONU's RSSI satisfies ONURssiMin < RSSI < ONURssiMax will the ONU send the corresponding SN_ONU message and complete the activation and registration. In addition, there are no other definitions related to power indication in the current ComTC and physical layer standards.

[0029] In one embodiment, FIG. 1 is a flowchart of a communication method provided by an embodiment of the present application. This embodiment is applied to the case of flexibly configuring a PON system. This embodiment is applied to a communication system, where the communication system can be a PON system. As shown in FIG. 1, this embodiment includes: S110 - S120.

[0030] S110. Split several optical power loss levels from the optical path loss levels composed of the first loss value and the second loss value of the ODN of the PON system.

[0031] The minimum value and the maximum value of each optical power loss level are both greater than or equal to the first loss value and both less than or equal to the second loss value; the first loss value is the minimum optical path loss of the optical distribution network, and the second loss value is the maximum optical path loss of the optical distribution network.

[0032] In an embodiment, an optical path loss level is formed by the minimum optical path loss (i.e., a first loss value) and the maximum optical path loss (i.e., a second loss value) of the optical distribution network. The optical path loss level is then split to obtain a plurality of optical power loss levels. The minimum and maximum values ​​of each optical power loss level are both greater than or equal to the first loss value, and both are less than or equal to the second loss value, such that the minimum and maximum values ​​of each optical power loss level are within the numerical range formed by the optical path loss level. That is, the minimum and maximum values ​​of each optical power loss level form a corresponding numerical sub-range, and the numerical range contains a plurality of numerical sub-ranges. In one embodiment, there may be no intersection between any two adjacent optical power loss levels, or there may be a partial overlap.

[0033] S120: Access different first communication devices according to different optical power loss levels in the passive optical network system.

[0034] In an embodiment, different first communication devices are connected to the PON system according to optical power loss levels.

[0035] In one embodiment, the different first communication devices include: first communication devices with different receiving sensitivities; or first communication devices with different transmitted optical powers. In this embodiment, the optical power loss of the first communication devices at various locations in the passive optical network system is monitored, and the optical power loss class to which the optical power loss belongs is determined. Then, a first communication device with an appropriate receiving sensitivity is selected for connection to the PON system; or a first communication device with an appropriate transmitted optical power is selected for connection to the PON system.

[0036] In one embodiment, the communication method applied to the first communication device in the communication system further includes:

[0037] Report optical power level indication information to the second communication device; wherein the optical power level indication information is used to indicate the optical power loss level adopted by the first communication device; receive the configuration content of the first communication device determined by the second communication device based on the optical power level indication information.

[0038] The optical power level indication information can be directly used to indicate the minimum and maximum values ​​corresponding to the optical power loss level adopted by the first communication device; or a level identifier can be directly used to represent the optical power loss level adopted by the first communication device. For example, assuming that the minimum and maximum values ​​corresponding to an optical power loss level (such as loss level 1) are 14dB and 16dB respectively, 14dB and 16dB can be directly carried in the optical power level indication information, and the second communication device can directly obtain the optical power loss level adopted by the first communication device as loss level 1 based on 14dB and 16dB; or a level identifier can be directly used as identifier 1 to indicate loss level 1, that is, identifier 1 is sent to the second communication device, so that the second communication device can obtain the optical power loss level adopted by the first communication node as loss level 1 based on the identifier.

[0039] In an embodiment, each first communication device reports optical power level indication information used to characterize the optical power loss level adopted by itself to the second communication device, so that the second communication device determines the optical power loss level adopted by each first communication device through the optical power level indication information, and determines the configuration content of the corresponding first communication device according to the optical power loss level.

[0040] In one embodiment, the optical power level indication information is used to indicate the mapping relationship between the optical power loss level and at least one receiving sensitivity. In an embodiment, the optical power level indication information can be used to indicate the mapping relationship between a determined receiving sensitivity and multiple optical power loss levels, or to indicate the mapping relationship between an optical power loss level and multiple receiving sensitivities. Exemplarily, a determined receiving sensitivity (e.g., -24dBm) corresponds to multiple optical power loss levels (e.g., loss levels 0 to 3), or a determined receiving sensitivity (e.g., -27dBm) corresponds to multiple optical power loss levels (e.g., loss levels 7 to 9). Since a receiver with weak performance can be replaced with a receiver with strong performance, for example, a receiver with a receiving sensitivity of -27dBm can directly replace a receiver with a receiving sensitivity of -24dBm, that is, one optical power loss level can correspond to multiple receiving sensitivities.

[0041] In one embodiment, the optical power level indication information is used to indicate a mapping relationship between an optical power loss level and at least one transmitted optical power. In one embodiment, multiple transmitted optical powers can be determined based on the optical power loss level of the optical distribution network, and a mapping relationship between different optical power loss levels and at least one transmitted optical power can be established.

[0042] In one embodiment, in the downlink direction, the configuration content determined by the optical power level indication information includes at least one of the following: forward error correction (FEC) decoding, demodulation mode, line rate, and operating wavelength.

[0043] In one embodiment, in the downlink direction of the passive optical network, at least two different FEC decodings can be configured to match optical network units with various optical power loss levels. For example, at least two different FEC decodings can be configured in different time slots in a frame; or, the FEC decoding of the same frame can be the same, but the FEC decoding of each downlink frame can be the same or different.

[0044] In one embodiment, in the downlink direction of the passive optical network, multiple line rates can be configured to match optical network units with various optical power loss levels. For example, for optical links that support higher line rates at optical power loss levels, signal transmission can be configured as needed to not exceed the maximum link rate supported by them; for optical links that support multiple line rates, signal transmission can be switched at each line rate.

[0045] In one embodiment, at least two different demodulation modes are configured in the downstream direction of a passive optical network to match optical network units with various receive optical power loss levels. For optical links with low optical power loss levels, a higher-order demodulation mode can be used to transmit data at a higher line rate; for optical links with high optical power loss levels, a lower-order demodulation mode can be used to transmit data at a stable line rate.

[0046] In one embodiment, in the downlink direction of the passive optical network, it can be configured to have at least two different operating wavelengths to match optical network units with different optical power loss levels.

[0047] In one embodiment, in the downlink direction of a passive optical network, if the optical power loss of a data frame arriving at a first communication device, or the optical power loss level indicated by the frame header, does not meet the first communication device's receive sensitivity specification, the first communication device automatically discards the received data frame. Otherwise, the next step is performed.

[0048] In one embodiment, in the uplink direction, the configuration content determined by the optical power level indication information includes at least one of the following: transmitted optical power, FEC coding, modulation mode, line rate, and operating wavelength.

[0049] In one embodiment, in the uplink direction of the passive optical network, at least two different FEC codes can be configured to match optical network units with various optical power loss levels. For example, at least two different FEC codes can be configured in different time slots in a frame; or, the FEC codes of the same frame can be the same, but the FEC codes of each downlink frame can be the same or different.

[0050] In one embodiment, in the uplink direction of the passive optical network, multiple line rates can be configured to match optical network units with various optical power loss levels. For example, for an optical link that supports a higher line rate at an optical power loss level, signal transmission can be configured as needed to not exceed the maximum link rate it supports; for an optical link that supports multiple line rates, signal transmission can be switched at each line rate.

[0051] In one embodiment, at least two different modulation schemes are configured in the upstream direction of a passive optical network to match optical network units with various receive optical power loss levels. For optical links with low optical power loss levels, a higher-order modulation scheme can be used to transmit data at a higher line rate; for optical links with high optical power loss levels, a lower-order modulation scheme can be used to transmit data at a stable line rate.

[0052] In one embodiment, in the uplink direction of the passive optical network, it can be configured to have at least two different operating wavelengths to match optical network units with different optical power loss levels.

[0053] In one embodiment, FIG2 is a flow chart of another communication method provided by an embodiment of the present application. This embodiment is applied to a flexible configuration of a PON system. This embodiment is applied to a communication system, where the communication system may be a PON system. As shown in FIG2 , this embodiment includes: S210-S220.

[0054] S210: Separate a plurality of optical power loss levels from an optical path loss level formed by a first loss value and a second loss value of an optical distribution network of a passive optical network system.

[0055] The minimum value and maximum value of each optical power loss level are both greater than or equal to the first loss value, and both less than or equal to the second loss value; the first loss value is the minimum optical path loss of the optical distribution network, and the second loss value is the maximum optical path loss of the optical distribution network.

[0056] S220: Determine configuration content of the second communication device according to different optical power level indication information.

[0057] The optical power level indication information is used to indicate the optical power loss level adopted by the first communication device.

[0058] In an embodiment, optical power level indication information is used to indicate the optical power loss level used by a first communication device. That is, the number of optical power level indication information is related to the number of first communication devices in the PON system. One optical power level indication information can be used to indicate the optical power loss level used by one first communication device, or one optical power level indication information can be used to indicate the optical power loss level used by multiple first communication devices. Generally speaking, one optical power level indication information is used to indicate the optical power loss level used by one first communication device. In an embodiment, a second communication device in the PON system determines the configuration content of the second communication device based on different optical power level indication information, and uses parameters corresponding to the configuration content for data transmission.

[0059] In one embodiment, the communication method applied to the second communication device in the communication system further includes:

[0060] Receive optical power level indication information reported by a first communication device; determine and send configuration details of the first communication device based on the optical power level indication information. In an embodiment, each first communication device in the PON system reports its own optical power level indication information to a second communication device. The second communication device determines the configuration details of the corresponding first communication device based on the different optical power level indication information, and sends the configuration details to the corresponding first communication device, so that the first communication device performs data transmission according to the configuration details.

[0061] In one embodiment, in the downlink direction, the configuration content determined by the optical power level indication information includes at least one of the following: FEC coding, modulation mode, line rate, and operating wavelength.

[0062] In one embodiment, in the uplink direction, the configuration content determined by the optical power level indication information includes at least one of the following: FEC decoding, demodulation mode, line rate, and operating wavelength.

[0063] In one embodiment, the optical power level indication information is used to indicate a mapping relationship between an optical power loss level and at least one receiving sensitivity.

[0064] In one embodiment, the optical power level indication information is used to indicate a mapping relationship between an optical power loss level and at least one transmit optical power.

[0065] For the explanation of various parameters such as the optical power loss level, optical power level indication information, and various configuration contents indicated by the optical power level indication information in the communication method applied to the second communication device, please refer to the description of the corresponding parameters in the above-mentioned communication method applied to the first communication device, and will not be repeated here.

[0066] In one embodiment, FIG3 is a schematic diagram of the structure configuration of a PON system provided by an embodiment of the present application. This embodiment takes the communication system as a PON system, the first communication device as an OLT, and the second communication device as an ONU as an example to illustrate the configuration of the structure of the PON system. As shown in FIG3, one OLT and 20 ONUs are configured in the PON system. Among them, the ONU 17 、ONU 18 、ONU 19 and ONU 20 It is the farthest from the OLT, while ONU1, ONU2, ONU3, ONU4, and ONU5 are closest to the OLT.

[0067] In one embodiment, FIG4 is a schematic diagram of a mapping relationship between an optical power loss level and a receiving sensitivity provided in an embodiment of the present application. As shown in FIG4 , the receiving sensitivity can be divided into three levels, namely Sens.Lv.1, Sens.Lv.2, and Sens.Lv.3; and the optical power loss level can be divided into 10 levels, namely loss level 0, loss level 1, loss level 2, loss level 3, ..., loss level 8, and loss level 9. A determined receiving sensitivity can correspond to multiple optical power loss levels. For example, Sens.Lv.1 corresponds to three optical power loss levels (loss level 0, loss level 1, and loss level 2), Sens.Lv.2 corresponds to four optical power loss levels (loss level 3, loss level 4, loss level 5, and loss level 6), and Sens.Lv.3 corresponds to three optical power loss levels (loss level 7, loss level 8, and loss level 9).

[0068] In one embodiment, FIG5 is a schematic diagram of a mapping relationship between the optical power loss level between the OLT and the ONU and the receiving sensitivity provided by an embodiment of the present application. This embodiment illustrates the mapping relationship between the optical power loss level and the receiving sensitivity between each ONU and the OLT in the PON system shown in FIG3. As shown in FIG5, a certain sensitivity can correspond to multiple optical power loss levels: the optical power loss levels of ONU1, ONU2, ONU3, ONU4 and ONU5 are relatively small, and accordingly, the receiving sensitivity can be lower, configured as Sens.Lv.1; ONU 10 、ONU 11 ONU1 12 、ONU 14 、ONU 15 and ONU 16The optical power loss level of ONU6, ONU7, ONU8, ONU9 and ONU5 is larger than that of ONU1, ONU2, ONU3, ONU4 and ONU5. Accordingly, the receiving sensitivity needs to be higher and can be configured as Sens.Lv.1 or Sens.Lv.2; ONU6, ONU7, ONU8, ONU9 and ONU 13 The optical power loss level is compared with ONU 10 、ONU 11 ONU1 12 、ONU 14 、ONU 15 and ONU 16 The receiving sensitivity needs to be higher, which can be configured as Sens.Lv.2; 17 、ONU 18 、ONU 19 and ONU 20 The optical power loss level of ONU6, ONU7, ONU8, ONU9 and ONU 13 For example, if the optical power loss level of ONU1, ONU2, ONU3, ONU4, and ONU5 is relatively low, normal data transmission can be achieved using the receive sensitivity of Sens.Lv.1. However, data transmission can also be achieved using the higher receive sensitivity of Sens.Lv.2 or Sens.Lv.3.

[0069] Using the communication method proposed in the embodiments of the present application, a single PON system can simultaneously have multiple modulation modes, different receive sensitivity specifications, and different transmit optical power specifications. For example, the OLT and ONU can use multiple modulation and demodulation modes, line rates, FEC encoding and decoding, operating wavelengths, and ONUs with multiple receive sensitivities or rates. Figure 6 is a schematic diagram of the configuration of a PON system divided by optical power loss level, provided in an embodiment of the present application. As shown in Figure 6, a PON system with 4 Pulse Amplitude Modulation (PAM4) 100G ONUs and NRZ 50G ONUs coexisting.

[0070] After the PON system's ODN is deployed, the received optical power at each ONU is essentially determined. At the start of service provisioning, specialized instruments such as optical power meters can be used to measure the optical power loss from the OLT to each ONU (at the metering point). This optical power loss can then be used to determine the corresponding optical power loss level, allowing the selection of ONUs with appropriate receiving sensitivity for access to the PON system. The OLT then configures the ONUs and performs data reception based on each ONU's optical power loss level.

[0071] In one implementation, the process of receiving an optical signal with optical power loss levels is described. The fiber length between the ONU and the OLT in a PON system, the cascaded optical splitter levels, and the splitting ratio at each level all affect the optical signal power loss between the OLT and a specific ONU, thereby determining different optical power loss levels. Different fiber lengths cause different optical signal attenuation, assuming the attenuation value A1 (dB) satisfies A1 = f1 (D). The cascaded optical splitter levels M and the splitting ratio Rm of each level also cause different optical signal attenuation, assuming the attenuation value A2 (dB) satisfies A2 = f2 (M, Rm). Other attenuation values, such as connectors, are assumed to be A3 (dB). Therefore, multiple different optical power loss levels can be classified based on the optical signal attenuation value A.

[0072] In a PON system, the attenuation value A between any ONU and the OLT can be expressed as A=A1+A2+A3.

[0073] After the optical power loss levels are classified, the optical power loss level of the ONU at that location can be determined based on the attenuation value A, and an ONU device with corresponding receiving sensitivity can be used to receive and further process the optical signal at that location in the PON system.

[0074] For example, optical reception classes are categorized based on optical power loss: low reception class (C1), medium reception class (C2), and high reception class (C3). Each class has a different receiving sensitivity. This allows ONUs with low reception classes to use photodetectors with lower sensitivity requirements, significantly reducing equipment manufacturing costs. For example, C1 uses PIN for reception; C2 uses PIN + SOA for reception; and C3 uses APD for reception. Attenuation is calculated in dB, and receiving sensitivity is calculated in dBm.

[0075] In one implementation, the optical power loss level is determined after the ODN in the PON system is deployed. The optical signal attenuation between the OLT and the ONU determines the appropriate ONU receiver sensitivity and transmit optical power. Furthermore, even if all ONUs use the same transmitter, the optical power loss level can be used to instruct the ONU to use different transmit optical powers for uplink data transmission, enabling adjustable transmit optical power. The optical power loss level can be embedded in the FS frame or the PSBd, sent from the OLT to the ONU via a PLOAM message, or indicated in other ways. This ensures minimal variation in the optical power reaching the OLT receiver from each ONU in the PON system, reducing the power balancing requirements on the OLT side and overall power consumption of the PON system.

[0076] In one implementation, the OLT performs ONU configuration and data reception (of the ONU) according to the received optical power loss level of each ONU.

[0077] After an ONU is connected to the PON system, during its registration and activation phase, the ONU can report its corresponding optical power loss level for reception, or the corresponding optical power loss level for transmission, or information related to reception sensitivity. Alternatively, the ONU can report such information through PLOAM messages or ONU Management and Control Interface (OMCI) messages during its working state (for example, O5 state). After the OLT obtains this information, it can adjust the ONU's line rate, operating wavelength, FEC encoding or modulation and demodulation mode manually or automatically to achieve optimal configuration of network resources.

[0078] In one implementation, different uplink and downlink modulation and demodulation methods may be applied according to the optical power loss level between the OLT and the ONU.

[0079] For ONUs with low received optical power loss levels, due to the small optical path loss, high-order modulation methods such as PAM4 can be used to communicate with the OLT (modulation and demodulation). However, for ONUs with high received optical power loss levels, due to the large optical path loss, low-order modulation methods such as NRZ can be used for stable transmission and reception.

[0080] In the downlink direction, when the same frame contains both high-order modulated data blocks and low-order modulated data blocks, it does not affect the reception after classification by optical power loss level. The ONU with low optical power loss level can receive the entire data frame, demodulate it one by one, extract and determine whether the demodulated data is the required data, and proceed to the next step of processing; while the ONU with high receiving optical power loss level can discard the high-order modulated data blocks, or even output an erroneous result according to the low-order demodulation method and then extract the corresponding data blocks according to the instructions in the frame.

[0081] Different modulation methods can correspond to different line rates. For example, at the same baud rate, the line rate of PAM4 is twice that of NRZ.

[0082] In one implementation, different FEC protections can be applied to data between the OLT and ONUs based on the different optical power loss levels between the OLT and ONUs. For example, low optical power loss levels correspond to high-throughput FEC encoding, further improving transmission rates; high optical power loss levels correspond to high-redundancy FEC encoding, further improving error correction capabilities.

[0083] In one embodiment, FIG7 is a block diagram of a communication device provided by an embodiment of the present application. This embodiment is applied to a communication system. As shown in FIG7 , the communication device in this embodiment includes: a splitting module 710 and an access module 720.

[0084] The splitting module 710 is configured to split a plurality of optical power loss levels from an optical path loss level composed of a first loss value and a second loss value of an optical distribution network of a passive optical network system; the minimum value and the maximum value of each optical power loss level are both greater than or equal to the first loss value, and both less than or equal to the second loss value; the first loss value is the minimum optical path loss of the optical distribution network, and the second loss value is the maximum optical path loss of the optical distribution network; the access module 720 is configured to access different first communication devices in the passive optical network system according to different optical power loss levels.

[0085] In one embodiment, the different first communication devices include: first communication devices with different receiving sensitivities; or first communication devices with different transmitting optical powers.

[0086] In one embodiment, the communication apparatus applied to the first communication device in the communication system further includes:

[0087] The reporting module is configured to report optical power level indication information to the second communication device; wherein the optical power level indication information is used to indicate the optical power loss level adopted by the first communication device; the receiving module is configured to receive the configuration content of the first communication device determined by the second communication device based on the optical power level indication information.

[0088] In one embodiment, the optical power level indication information is used to indicate a mapping relationship between an optical power loss level and at least one receiving sensitivity.

[0089] In one embodiment, the optical power level indication information is used to indicate a mapping relationship between an optical power loss level and at least one transmit optical power.

[0090] In one embodiment, in the downlink direction, the configuration content determined by the optical power level indication information includes at least one of the following: FEC decoding, demodulation mode, line rate, and operating wavelength.

[0091] In one embodiment, in the uplink direction, the configuration content determined by the optical power level indication information includes at least one of the following: transmitted optical power, FEC coding, modulation mode, line rate, and operating wavelength.

[0092] The communication apparatus provided in this embodiment is configured to implement the communication method applied to the first communication device in the embodiment shown in FIG1 . The implementation principle and technical effects of the communication apparatus provided in this embodiment are similar and will not be described in detail here.

[0093] In one embodiment, FIG8 is a block diagram of another communication device provided by an embodiment of the present application. This embodiment is applied to a communication system. As shown in FIG8 , the communication device in this embodiment includes: a splitting module 810 and a first determining module 820.

[0094] The splitting module 810 is configured to split a plurality of optical power loss levels from an optical path loss level composed of a first loss value and a second loss value of an optical distribution network of a passive optical network system; the minimum value and the maximum value of each optical power loss level are both greater than or equal to the first loss value, and both less than or equal to the second loss value; the first loss value is the minimum optical path loss of the optical distribution network, and the second loss value is the maximum optical path loss of the optical distribution network; the first determination module 820 is configured to determine the configuration content of the second communication device according to different optical power level indication information; wherein the optical power level indication information is used to indicate the optical power loss level adopted by the first communication device.

[0095] In one embodiment, the communication apparatus applied to the second communication device in the communication system further includes:

[0096] The receiving module is configured to receive the optical power level indication information reported by the first communication device; the second determining module is configured to determine and send the configuration content of the first communication device according to the optical power level indication information.

[0097] In one embodiment, in the downlink direction, the configuration content determined by the optical power level indication information includes at least one of the following: FEC coding, modulation mode, line rate, and operating wavelength.

[0098] In one embodiment, in the uplink direction, the configuration content determined by the optical power level indication information includes at least one of the following: FEC decoding, demodulation mode, line rate, and operating wavelength.

[0099] In one embodiment, the optical power level indication information is used to indicate a mapping relationship between an optical power loss level and at least one receiving sensitivity.

[0100] In one embodiment, the optical power level indication information is used to indicate a mapping relationship between an optical power loss level and at least one transmit optical power.

[0101] The communication apparatus provided in this embodiment is configured to implement the communication method applied to the second communication device in the embodiment shown in FIG. 2 . The implementation principle and technical effects of the communication apparatus provided in this embodiment are similar and will not be described in detail here.

[0102] In one embodiment, FIG9 is a block diagram of a communication system provided by an embodiment of the present application. As shown in FIG9 , the communication system in this embodiment includes: a first communication device 910 and a second communication device 920; the receiving sensitivity of the first communication device 910 corresponds to at least one optical power loss level; or the optical power transmitted by the transmitter of the first communication device 910 corresponds to the optical power loss level; the first communication device 910 reports the optical power loss level and receives configuration content sent by the second communication device 920; the second communication device 920 determines and sends the configuration content of the first communication device 910 based on the optical power loss level of each first communication device 910; and the second communication device 920 configures itself and transmits data accordingly based on the optical power loss level of each first communication device 910.

[0103] In one embodiment, Figure 10 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. As shown in Figure 10, the device provided in the present application includes: a processor 1010, a memory 1020, and a communication interface 1030. The number of processors 1010 in the device can be one or more, and Figure 10 uses one processor 1010 as an example. The number of memories 1020 in the device can be one or more, and Figure 10 uses one memory 1020 as an example. The processor 1010, memory 1020, and communication interface 1030 of the device can be connected via a bus or other means, and Figure 10 uses a bus connection as an example. In this embodiment, the device can be a first communication device.

[0104] The memory 1020, as a computer-readable storage medium, can be configured to store software programs, computer executable programs, and modules, such as program instructions / modules corresponding to the device of any embodiment of the present application (for example, the splitting module 710 and the access module 720 in the communication device). The memory 1020 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; and the data storage area may store data created according to the use of the device, etc. In addition, the memory 1020 may include a high-speed random access memory and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 1020 may further include a memory remotely located relative to the processor 1010, and these remote memories may be connected to the device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof. Among them, the communication interface 1030 is configured to implement a communication connection between the first communication device and the second communication device.

[0105] When the communication device is a first communication device, the above-mentioned device can be configured to execute a communication method applied to a communication system provided in any of the above-mentioned embodiments, as well as a communication method of the first communication device in the communication system, and have corresponding functions and effects.

[0106] When the communication device is a second communication device, the above-mentioned device can be configured to execute another communication method provided in any of the above-mentioned embodiments and applied in the communication system, as well as the communication method of the second communication device in the communication system, and have corresponding functions and effects.

[0107] An embodiment of the present application also provides a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to execute a communication method applied to a communication system, the method comprising: splitting a plurality of optical power loss levels from an optical path loss level composed of a first loss value and a second loss value of an optical distribution network of a passive optical network system; the minimum value and the maximum value of each optical power loss level are both greater than or equal to the first loss value, and both less than or equal to the second loss value; the first loss value is the minimum optical path loss of the optical distribution network, and the second loss value is the maximum optical path loss of the optical distribution network; and accessing different first communication devices in the passive optical network system according to different optical power loss levels.

[0108] An embodiment of the present application also provides a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to execute another communication method applied to a communication system, the method comprising: splitting a plurality of optical power loss levels from an optical path loss level composed of a first loss value and a second loss value of an optical distribution network of a passive optical network system; the minimum value and the maximum value of each optical power loss level are both greater than or equal to the first loss value, and both less than or equal to the second loss value; the first loss value is the minimum optical path loss of the optical distribution network, and the second loss value is the maximum optical path loss of the optical distribution network; determining the configuration content of the second communication device according to different optical power level indication information; wherein the optical power level indication information is used to indicate the optical power loss level adopted by the first communication device.

[0109] It will be appreciated by those skilled in the art that the term user equipment encompasses any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a car-mounted mobile station.

[0110] In general, various embodiments of the present application may be implemented in hardware or dedicated circuits, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although the present application is not limited thereto.

[0111] Embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example, in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0112] Any block diagram of the logic flow in the drawings of the present application may represent program operations, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program operations and logic circuits, modules and functions. A computer program may be stored on a memory. The memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical storage devices and systems (digital versatile discs (DVD) or compact disks (CD)), etc. Computer-readable media may include non-transient storage media. A data processor may be of any type suitable for the local technical environment, such as, but not limited to, a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), and a processor based on a multi-core processor architecture.

Claims

1. A communication method, applied to a communication system, include: Different optical power loss levels are separated from the optical path loss level composed of the first loss value and the second loss value of the optical distribution network of the passive optical network system; the minimum value and the maximum value of each optical power loss level are both greater than or equal to the first loss value, and both are less than or equal to the second loss value; the first loss value is the minimum optical path loss of the optical distribution network, and the second loss value is the maximum optical path loss of the optical distribution network; Different first communication devices are accessed in the passive optical network system according to the different optical power loss levels.

2. The method according to claim 1, in, The different first communication devices include: first communication devices with different receiving sensitivities; or first communication devices with different transmitting optical powers.

3. The method according to claim 1, in, The method is applied to a first communication device in a communication system, and the method further includes: Reporting optical power level indication information to the second communication device; wherein the optical power level indication information is used to indicate the optical power loss level adopted by the first communication device; The configuration content of the first communication device determined by the second communication device according to the optical power level indication information is received.

4. The method according to claim 3, in, The optical power level indication information is used to indicate a mapping relationship between an optical power loss level and at least one receiving sensitivity.

5. The method according to claim 3, in, The optical power level indication information is used to indicate a mapping relationship between an optical power loss level and at least one transmitted optical power.

6. The method according to claim 3, in, In the downlink direction, the configuration content determined by the optical power level indication information includes at least one of the following: forward error correction decoding, demodulation mode, line rate, and operating wavelength.

7. The method according to claim 3, in, In the uplink direction, the configuration content determined by the optical power level indication information includes at least one of the following: transmitted optical power, forward error correction coding, modulation mode, line rate, and operating wavelength.

8. A communication method, applied to a communication system, include: Different optical power loss levels are separated from the optical path loss level composed of the first loss value and the second loss value of the optical distribution network of the passive optical network system; the minimum value and the maximum value of each optical power loss level are both greater than or equal to the first loss value, and both are less than or equal to the second loss value; the first loss value is the minimum optical path loss of the optical distribution network, and the second loss value is the maximum optical path loss of the optical distribution network; The configuration content of the second communication device is determined according to different optical power level indication information; wherein the optical power level indication information is used to indicate the optical power loss level adopted by the first communication device.

9. The method according to claim 8, in, The method is applied to a second communication device in a communication system, and the method further includes: Receiving optical power level indication information reported by the first communication device; The configuration content of the first communication device is determined and sent according to the optical power level indication information.

10. The method according to claim 8, in, In the downlink direction, the configuration content determined by the optical power level indication information includes at least one of the following: forward error correction coding, modulation mode, line rate, and operating wavelength.

11. The method according to claim 8, in, In the uplink direction, the configuration content determined by the optical power level indication information includes at least one of the following: forward error correction decoding, demodulation mode, line rate, and operating wavelength.

12. A first communication device, include: memory, and at least one processor; The memory is configured to store at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the communication method as described in any one of claims 1 to 7.

13. A second communication device, include: memory, and at least one processor; The memory is configured to store at least one program; When the at least one program is executed by the at least one processor, the at least one processor implements the communication method as described in any one of claims 8 to 11.

14. A communication system, include: a first communication device and a second communication device; The receiving sensitivity of the first communication device corresponds to at least one optical power loss level; or the optical power of the transmitted light of the first communication device corresponds to the optical power loss level; The first communication device is configured to report an optical power loss level and receive configuration content sent by the second communication device; The second communication device is configured to determine and send the configuration content of each first communication device according to the optical power loss level of each first communication device; The second communication device is also configured to configure itself and transmit data accordingly according to the optical power loss level of each first communication device.

15. A storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the communication method as described in any one of claims 1 to 7, or implements the communication method as described in any one of claims 8 to 11.

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