Communication method, device, system and storage medium

Abstract

The invention provides a communication method, device and system and a storage medium. The communication method applied to the communication system comprises the following steps: splitting 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; 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 smaller 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 according to different optical power loss levels.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method, device, system and storage medium. Background Art

[0002] In the Passive Optical Network (PON), the power loss between the Optical Line Terminal (OLT) and the Optical Network Unit (ONU) varies with the distance, splitting ratio and splitter cascade level of the Optical Distribution Network (ODN). Each transmitter in the OLT has a different transmission margin, which leads to large differences in the optical power received by the ONUs deployed at different locations under the same standard specifications, resulting in uneven reception effects, underutilized network resources, and high overall network costs and energy consumption of the PON system but low utilization. Summary of the invention

[0003] In view of this, 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.

[0004] The present application provides a communication method, which is applied to a communication system, including:

[0005] A plurality of optical power loss levels are separated 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; a minimum value and a 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;

[0006] Different first communication devices are accessed in the passive optical network according to different optical power loss levels.

[0007] The embodiment of the present application provides a communication method, which is applied to a communication system, including: 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; a minimum value and a 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;

[0008] 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, including: a memory, and one or more processors;

[0010] The memory is configured to store one or more programs;

[0011] When the one or more programs are executed by the one or more processors, the one or more processors implement the method described in any of the above embodiments.

[0012] An embodiment of the present application provides a second communication device, including: a memory, and one or more processors;

[0013] The memory is configured to store one or more programs;

[0014] When the one or more programs are executed by the one or more processors, the one or more processors implement the method described in any of the above embodiments.

[0015] The 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 transmitter transmission optical power of the first communication device corresponds to the optical power loss level;

[0016] The first communication device reports the optical power loss level and receives configuration content sent by the second communication device;

[0017] The second communication device determines and sends configuration content of the first communication device according to the optical power loss level of each of the first communication devices;

[0018] The second communication device configures itself and transmits data accordingly according to the optical power loss level of each of the first communication devices.

[0019] An embodiment of the present application provides a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any of the above embodiments is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a flow chart of a communication method provided by an embodiment of the present application;

[0021] Figure 2 is a flow chart of another communication method provided by an embodiment of the present application;

[0022] Figure 3 It is a schematic diagram of the structural configuration of a PON system provided in an embodiment of the present application;

[0023] Figure 4 This 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;

[0024] Figure 5 This is a schematic diagram of a mapping relationship between an optical power loss level and a receiving sensitivity between an OLT and an ONU provided in an embodiment of the present application;

[0025] Figure 6 It is a configuration diagram of a PON system divided by optical power loss level provided in an embodiment of the present application;

[0026] Figure 7 is a structural block diagram of a communication device provided in an embodiment of the present application;

[0027] Figure 8 is a structural block diagram of another communication device provided in an embodiment of the present application;

[0028] Fig. 9 is a structural block diagram of a communication system provided in an embodiment of the present application;

[0029] Fig.10 It is a structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The following will describe the embodiments of the present application in conjunction with the accompanying drawings. The following will describe the present application in conjunction with the accompanying drawings of the embodiments, and the examples cited are only used to explain the present application and are not used to limit the scope of the present application.

[0031] The existing PON system uses a splitter to split a transmitted optical signal into multiple optical paths for transmission, so that multiple users can share network resources. At the same time, multiple different optical link budget levels are defined in the PON system to cope with different network requirements and application scenarios such as transmission rate, transmission distance, number of users and bandwidth resources. Generally speaking, the higher the link budget level, the longer the optical fiber length and the number of splitters, the longer the transmission distance of the optical signal, and the higher the cost.

[0032] In the existing PON system, a fixed downstream rate is used, such as 49.7664Gbit / s for G.9804.3. For the two different optical power budget levels N1 / C+ defined by the standard, in the downstream direction, except that the C+ level of the OLT transmitting end is 3dB higher than the N1 level, the sensitivity requirements of the ONU receiving side are exactly the same; in the upstream direction, for the same line rate, except that the C+ level of the OLT receiving end is 3dB higher than the N1 level, the transmission optical power requirements of the ONU transmitting side are exactly the same. Of course, the corresponding transmission optical power and receiving sensitivity of different upstream line rates will be different.

[0033] Although there are multiple different optical power budgets in the existing PON system, the corresponding coverage distances are generally fixed, such as DD20 (20km) or DD40 (40km), and the same line coding is used, such as NRZ line coding. Since the ONU receiver in the PON system uses a sensitivity standard value, whether N1 or C+, this requires that the receiving design of all ONUs must guarantee the same specification, and this value is formulated based on the worst case of ODN, so the optical power received by most ONUs is far higher than the receiving sensitivity requirement. In addition, under the same optical power budget, the transmitters of all ONUs are also at the same average optical power transmission level, and the actual power loss between OLT and ONU is not considered. This not only brings higher costs to the overall PON network, but also is not conducive to reducing system power consumption.

[0034] In order to further improve the PON system capabilities while ensuring the basic service quality of users and reducing the 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.

[0035] In the current 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 CT, the OLT measures the received signal strength indicator (RSSI) and the bit error rate it receives. When the registration conditions are met, it sends the SN_ONU PLOAM message to the ONU. Only when the RSSI of the ONU satisfies ONURssiMin < RSSI < ONURssiMax, will the ONU respond to the 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.

[0036] In one embodiment, Figure 1 is a flowchart of a communication method provided by an embodiment of the present application. This embodiment is applied to the situation of flexibly configuring a PON system. This embodiment is applied to a communication system, where the communication system can be a PON system. As Figure 1 shown, this embodiment includes: S110 - S120.

[0037] S110. Split several optical power loss levels from the optical path loss levels formed by the first loss value and the second loss value of the ODN of the PON system.

[0038] Among them, 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.

[0039] In an embodiment, an optical path loss level is composed of the minimum optical path loss (i.e., the first loss value) and the maximum optical path loss (i.e., the second loss value) of the optical distribution network, and the optical path loss level is 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 the minimum and maximum values ​​are both less than or equal to the second loss value, so as to satisfy that the minimum and maximum values ​​of each optical power loss level are both within the numerical range composed of 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 an embodiment, there may be no intersection between each two adjacent optical power loss levels, or there may be a partial overlapping area.

[0040] S120: Access different first communication devices in the passive optical network according to different optical power loss levels.

[0041] In an embodiment, different first communication devices are connected to the PON system according to optical power loss levels.

[0042] In one embodiment, different first communication devices include: first communication devices with different receiving sensitivities; or first communication devices with different transmitting optical powers. In an embodiment, the optical power loss of first communication devices at various positions in the passive optical network is monitored, and the optical power loss level to which the optical power loss belongs is determined, and then a first communication device with appropriate receiving sensitivity is selected to access the PON system; or a first communication device with appropriate transmitting optical power is selected to access the PON system.

[0043] In one embodiment, the communication method applied to the first communication device in the communication system further includes:

[0044] 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;

[0045] The configuration content of the first communication device determined by the second communication device according to the optical power level indication information is received.

[0046] Among them, 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, then 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 by carrying 14dB and 16dB in the optical power level indication information; 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.

[0047] 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.

[0048] 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 by a receiver with strong performance, for example, a receiver with a receiving sensitivity of -27dBm can directly replace a receiver with -24dBm, that is, an optical power loss level can correspond to multiple receiving sensitivities.

[0049] 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 an embodiment, the optical power loss level of the optical distribution network can be divided into multiple transmitted optical powers, and a mapping relationship between different optical power loss levels and at least one transmitted optical power can be established.

[0050] 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.

[0051] 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 each downlink frame can be the same or different.

[0052] In one embodiment, in the downstream 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, they can be configured as needed to transmit signals at a rate not exceeding the maximum link rate they support; for optical links that support multiple line rates, signal transmission can be switched at each line rate.

[0053] In one embodiment, in the downlink direction of the passive optical network, at least two different demodulation modes are configured to match optical network units of various receiving 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 low-order demodulation mode can be used to transmit data at a stable line rate.

[0054] In one embodiment, in the downstream 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.

[0055] In one embodiment, in the downlink direction of the passive optical network, if the optical power loss of the data frame arriving at the first communication device or the optical power loss level indicated by the frame header thereof does not meet the receiving sensitivity specification of the first communication device, the first communication device automatically discards the received data frame. Otherwise, the next step is performed.

[0056] 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.

[0057] 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 each downlink frame can be the same or different.

[0058] 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 optical links that support higher line rates at optical power loss levels, they can be configured as needed to transmit signals at a rate not exceeding the maximum link rate they support; for optical links that support multiple line rates, signal transmission can be switched at each line rate.

[0059] In one embodiment, in the upstream direction of the passive optical network, at least two different modulation modes are configured to match optical network units with various receiving optical power loss levels. For optical links with low optical power loss levels, a higher-order modulation mode can be used to transmit data at a higher line rate; for optical links with high optical power loss levels, a low-order modulation mode can be used to transmit data at a stable line rate.

[0060] In one embodiment, in the upstream 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.

[0061] In one embodiment, Figure 2 1 is a flow chart of another 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, wherein the communication system may be a PON system. Figure 2 As shown, this embodiment includes: S210-S220.

[0062] S210, separating 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.

[0063] The minimum and maximum values ​​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.

[0064] S220: Determine configuration content of the second communication device according to different optical power level indication information.

[0065] The optical power level indication information is used to indicate the optical power loss level adopted by the first communication device.

[0066] In an embodiment, optical power level indication information is used to indicate the optical power loss level used by the 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, the second communication device in the PON system determines the configuration content of the second communication device according to different optical power level indication information, so as to use the parameters corresponding to the configuration content for data transmission.

[0067] In one embodiment, the communication method applied to the second communication device in the communication system further includes:

[0068] Receiving optical power level indication information reported by the first communication device;

[0069] Determine and send the configuration content of the first communication device according to 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 the second communication device, and the second communication device determines the configuration content of the corresponding first communication device according to different optical power level indication information, and sends the configuration content to the corresponding first communication device, so that the first communication device performs data transmission according to the configuration content.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] It should be noted that 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.

[0075] In one embodiment, Figure 3 Schematic diagram of the structure configuration of a PON system provided in 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 structure configuration of the PON system. Figure 3 As shown in the figure, one OLT and 20 ONUs are configured in the PON system. 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.

[0076] In one embodiment, Figure 4 Schematic diagram of a mapping relationship between optical power loss level and receiving sensitivity provided in an embodiment of the present application. Figure 4 As shown, 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 certain 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, 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).

[0077] In one embodiment, Figure 5 This is a schematic diagram of a mapping relationship between the optical power loss level and the receiving sensitivity between the OLT and the ONU provided in an embodiment of the present application. Figure 3 The mapping relationship between the optical power loss level and the receiving sensitivity between each ONU and OLT in the PON system shown in FIG. Figure 5 As shown, 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 relatively low, configured as Sens.Lv.1; 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. Correspondingly, the receiving sensitivity needs to be higher and can be configured as Sens.Lv.1 or Sens.Lv.2. 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, the optical power loss level of ONU1, ONU2, ONU3, ONU4 and ONU5 is relatively small, and the receiving sensitivity Sens.Lv.1 can achieve normal data transmission, but the receiving sensitivity Sens.Lv.2 or Sens.Lv.3 with higher sensitivity can also be used to achieve data transmission.

[0078] By adopting the communication method proposed in the embodiment of the present application, a plurality of modulation modes, specifications of different receiving sensitivities, specifications of different transmitted optical powers, etc. can be simultaneously provided in the same PON system. For example, the OLT and the ONU can adopt a plurality of modulation and demodulation modes, line rates, FEC encoding and decoding, working wavelengths, and ONUs with a plurality of receiving sensitivities or rates. Figure 6 1 is a schematic diagram of a configuration of a PON system divided by optical power loss level provided in an embodiment of the present application. Figure 6 , PON system where PAM4100GONU and 50G NRZ ONU coexist.

[0079] After the ODN of the PON system is laid, the received optical power of each ONU is basically determined. At the beginning of the service opening, the specific optical power loss transmitted from the OLT to each ONU (at the metering point) can be obtained through professional instruments such as receiving optical power meters, so that the corresponding optical power loss level can be obtained according to the optical power loss, and then the ONU with appropriate receiving sensitivity can be selected to access the PON system. After that, the OLT performs ONU configuration and (ONU) data reception according to the optical power loss level of each ONU.

[0080] In one implementation, the process of receiving an optical signal with an optical power loss level is described. The optical fiber length between the ONU and the OLT in the PON system, the cascade level of the optical splitter, and the splitting ratio of each level will affect the loss of the optical signal power between the OLT and a specific ONU, thereby determining different optical power loss levels. Among them, different optical fiber lengths will cause different attenuation of the optical signal, assuming that the attenuation value A1 (dB) satisfies A1 = f1 (D); the cascade level M of the optical splitter and the splitting ratio Rm of each layer will also cause different attenuation of the optical signal, assuming that the attenuation value A2 (dB) satisfies A2 = f2 (M, Rm); other attenuation values, such as connectors, are assumed to be A3 (dB); then multiple different optical power loss levels can be divided with reference to the attenuation value A of the optical signal.

[0081] In the PON system, the attenuation value A between any ONU and OLT can be expressed as A=A1+A2+A3.

[0082] After the optical power loss level is divided, the optical power loss level of the ONU at that location can be determined according to 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.

[0083] For example, according to the different levels of optical power loss, they are divided into three categories: low reception level (C1), medium reception level (C2), and high reception level (C3); each category has different receiving sensitivities, so that the ONUs with low reception levels only need to use photodetectors that do not require high sensitivity, thereby greatly reducing the equipment manufacturing cost. For example, C1 uses PIN for reception; C2 uses PIN+SOA for reception; and C3 uses APD for reception. Among them, the attenuation value is calculated in dB, and the receiving sensitivity is calculated in dBm.

[0084] In one implementation, after the ODN of the PON system is deployed, the optical power loss level is determined. According to the different attenuation of the optical signal between the OLT and the ONU, it can be determined which type of ONU with receiving sensitivity and transmitting optical power to use. In addition, even if all ONUs use the same transmitter, this optical power loss level can be used to instruct the ONU to use different transmitting optical powers for upstream data transmission, so as to achieve adjustable transmitting optical power. The optical power loss level can be embedded in the FS frame, or embedded in the PSBd, or sent from the OLT to the ONU through the PLOAM message, or indicated in other ways. In this way, the optical power reaching the OLT receiver from each ONU in the PON system is not much different, which can reduce the requirements for power balancing processing on the OLT side and reduce the overall power consumption of the PON system.

[0085] In one implementation, the OLT performs ONU configuration and (ONU's) data reception according to the received optical power loss level of each ONU.

[0086] After the ONU is connected to the PON system, during its registration and activation phase, the ONU can report the corresponding optical power loss level of its reception, or the corresponding optical power loss level of its transmission, or information related to the receiving sensitivity, or report such information through a PLOAM message or an OMCI message in the working state of the ONU (for example, the O5 state). After the OLT obtains the information, it adjusts the line rate, working wavelength, FEC encoding or modulation and demodulation mode of the ONU manually or automatically to achieve optimal configuration of network resources.

[0087] 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.

[0088] For ONUs with low received optical power loss levels, since the optical path loss is small, high-order modulation methods, such as PAM4, can be used to communicate with the OLT (modulation and demodulation); while for ONUs with high received optical power loss levels, since the optical path loss is large, low-order modulation methods, such as NRZ, can be used for stable transmission and reception.

[0089] In the downstream 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 being divided by optical power loss levels. The ONU with a low optical power loss level can receive the entire data frame and demodulate it one by one, extract and determine whether it is the required data and proceed to the next step of processing; while the ONU with a 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.

[0090] 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.

[0091] In one implementation, different FEC protections can be implemented for data between the OLT and the ONU according to different optical power loss levels between the OLT and the ONU. For example, a high-throughput FEC is used to encode data with a low optical power loss level to further improve the transmission rate; a high-redundancy FEC is used to encode data with a high optical power loss level to further improve the error correction capability.

[0092] In one embodiment, Figure 7 is a structural block diagram of a communication device provided in an embodiment of the present application. This embodiment is applied to a communication system. Figure 7As shown, the communication device in this embodiment includes: a splitting module 710 and an access module 720.

[0093] The splitting module 710 is configured to split 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; a minimum value and a 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;

[0094] The access module 720 is configured to access different first communication devices according to different optical power loss levels in the passive optical network.

[0095] 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.

[0096] In one embodiment, the communication apparatus applied to the first communication device in the communication system further includes:

[0097] A reporting module 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;

[0098] The receiving module is configured to receive the configuration content of the first communication device determined by the second communication device according to the optical power level indication information.

[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 transmitted optical power.

[0101] 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.

[0102] 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.

[0103] The communication device provided in this embodiment is configured to implement Figure 1 The communication method applied to the first communication device in the illustrated embodiment is similar to the implementation principle and technical effect of the communication device provided in this embodiment, and will not be described in detail here.

[0104] In one embodiment, Figure 8 is a structural block diagram of another communication device provided in an embodiment of the present application. This embodiment is applied to a communication system. Figure 8 As shown, the communication device in this embodiment includes: a splitting module 810 and a first determining module 820.

[0105] The splitting module 810 is configured to split 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; a minimum value and a 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;

[0106] 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.

[0107] In one embodiment, the communication apparatus applied to the second communication device in the communication system further includes:

[0108] A receiving module, configured to receive optical power level indication information reported by the first communication device;

[0109] The second determination module is configured to determine and send configuration content of the first communication device according to the optical power level indication information.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] The communication device provided in this embodiment is configured to implement Figure 2 The communication method applied to the second communication device in the illustrated embodiment is similar to the implementation principle and technical effect of the communication device provided in this embodiment, and will not be described in detail here.

[0115] In one embodiment, Fig. 9 is a structural block diagram of a communication system provided in an embodiment of the present application. Fig. 9 As shown, 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 transmitter transmitting optical power 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 the 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 according to the optical power loss level of each first communication device 910; the second communication device 920 performs corresponding configuration and data transmission on itself according to the optical power loss level of each first communication device 910.

[0116] In one embodiment, Fig.10 Schematic diagram of a communication device provided in an embodiment of the present application. Fig.10 As shown, the device provided by 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. Fig.10 In the example, a processor 1010 is used. The number of memories 1020 in the device may be one or more. Fig.10 A memory 1020 is taken as an example. The processor 1010, the memory 1020 and the communication interface 1030 of the device can be connected via a bus or other means. Fig.10 In the embodiment, the bus connection is taken as an example. In this embodiment, the device may be a first communication device.

[0117] The memory 1020, as a computer-readable storage medium, may 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 (e.g., the split 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; 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 arranged 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 realize a communication connection between the first communication device and the second communication device.

[0118] When the communication device is a first communication device, the above-mentioned device can be configured to execute a communication method applied in 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.

[0119] When the communication device is a second communication device, the above-mentioned device can be configured to execute another communication method applied in a communication system provided by any of the above-mentioned embodiments, as well as a communication method of a second communication device in a communication system, and have corresponding functions and effects.

[0120] An embodiment of the present application also provides a storage medium containing computer executable instructions. When the computer executable instructions are executed by a computer processor, they are used to execute a communication method applied to a communication system. The method includes: 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 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; and accessing different first communication devices in the passive optical network according to different optical power loss levels.

[0121] 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 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; 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.

[0122] 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.

[0123] In general, various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can 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.

[0124] 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.

[0125] The block diagram of any logic flow in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions. A computer program may be stored on a memory. The memory may have 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 memory 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 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 (FGPAs) and a processor based on a multi-core processor architecture.

[0126] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A communication method, characterized in that: Applications in communication systems, including: A plurality of optical power loss levels are separated 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; a minimum value and a 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 connected to the passive optical network according to different optical power loss levels.

2. The method according to claim 1, characterized in that 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, characterized in that Applied to a first communication device in a communication system, the method comprises: 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 1, characterized in that: 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 1, characterized in that 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, characterized in that: 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, characterized in that 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, characterized in that: Applications in communication systems, including: A plurality of optical power loss levels are separated 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; a minimum value and a 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.

9. The method according to claim 8, characterized in that Applied to a second communication device in a communication system, the method comprising: 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, characterized in that 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, characterized in that 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, characterized in that: include: 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 as described in any one of claims 1 to 7.

13. A second communication device, characterized in that: include: 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 as described in any one of claims 8 to 11.

14. A communication system, characterized in that: 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 reports the optical power loss level and receives configuration content sent by the second communication device; The second communication device determines and sends configuration content of the first communication device according to the optical power loss level of each of the first communication devices; The second communication device configures itself and transmits data accordingly according to the optical power loss level of each of the first communication devices.

15. A storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, it 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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