CN113873361A - Configuration method for uplink service transmission capability of ONU (optical network Unit) and optical line terminal - Google Patents
Configuration method for uplink service transmission capability of ONU (optical network Unit) and optical line terminal Download PDFInfo
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Abstract
The disclosure provides a configuration method for uplink service transmission capability of an ONU and an optical line terminal. The method comprises the following steps: acquiring uplink service characteristics and equipment identity information of a plurality of industrial network elements connected with user ports of the ONU, wherein the uplink service characteristics comprise the transmission period and bandwidth requirement information of uplink service of each industrial network element; acquiring the maximum value of the sending period of the uplink services of the industrial network elements based on the acquired uplink service characteristics and the equipment identity information, and calculating the sum of time slot resources occupied by the industrial network elements in the sending period of the maximum value when the industrial network elements transmit data periodically; under the condition that the maximum value of the sending period is smaller than the sum of the time slot resources, deploying the industrial network element with the maximum data transmission quantity in the plurality of industrial network elements below other PON ports, and otherwise, allocating the time slot resources for the uplink services of the plurality of industrial network elements; and generating an uplink DBA scheduling message, and issuing the uplink DBA scheduling message to the ONU.
Description
Technical Field
The present disclosure relates to the field of Optical communication technologies, and in particular, to a configuration method for an uplink service transmission capability of an ONU (Optical Network Unit) and an OLT (Optical Line Terminal).
Background
Passive Optical Network (PON) technology has been widely deployed in public access networks. In a PON system, an uplink service defense line is implemented based on a Time Division Multiplexing (TDM) technology, an OLT in a PON device is responsible for allocating an uplink bandwidth in each bandwidth period in real Time to all online ONUs under a PON port of the OLT, and the ONUs transmit uplink data in a next transmission period strictly according to the bandwidth allocation scheme.
In the manner in the current standard, the current bandwidth allocation method is as follows: (1) the ONU reports how many byte data packets need to be transmitted in the next period in each frame (125 microseconds); (2) the OLT is all on-line ONUs, and a reasonable uplink burst transmission window in the next period is distributed to the ONUs according to the requirements of the data to be transmitted in the next period reported by all the ONUs in combination with the overall situation, wherein the number of the actual windows is determined by the OLT; (3) the requirement of The FTTH (Fiber To The Home) network service time delay is relatively loose, and in order To guarantee The efficiency of The uplink bandwidth, The OLT equipment performs The allocation interaction of The uplink time slot resources in each 125 microsecond period, so as To guarantee The fairness.
The passive optical network can be applied to the industrial internet. In such an industrial scenario, the number of industrial network elements and the service transmission periodicity suspended under the PON system remain stable for a long time, and meanwhile, compared with the transmission bandwidth, there is a higher demand for deterministic latency of the uplink network in the industrial scenario.
The PON uplink time slot allocation method in the related art is applied to an industrial scenario, and may have the following problems: the network elements and the service characteristics of the industrial application scene are stable and hardly change, and the mode of re-scheduling resources in each polling period occupies a large amount of precious uplink burst time slot resources.
Disclosure of Invention
The technical problem that this disclosure solved is: a configuration method for uplink service transmission capability of an ONU is provided to avoid frequent occupation of uplink time slot resources for repeated resource allocation as much as possible.
According to an aspect of the present disclosure, there is provided a method for configuring an uplink traffic transmission capability of an ONU, including: acquiring uplink service characteristics and equipment identity information of a plurality of industrial network elements connected with user ports of an ONU (optical network unit), wherein the uplink service characteristics comprise a sending period and bandwidth requirement information of uplink service of each industrial network element; acquiring the maximum value of the sending period of the uplink services of the industrial network elements based on the acquired uplink service characteristics and the equipment identity information, and calculating the sum of time slot resources occupied by the industrial network elements during the periodic data transmission in the sending period of the maximum value; under the condition that the maximum value of the sending period is smaller than the sum of the time slot resources, deploying the industrial network element with the maximum data transmission quantity in the plurality of industrial network elements to be below other PON ports different from the current PON port of the passive optical network where the ONU is located; under the condition that the maximum value of the sending period is greater than or equal to the sum of the time slot resources, allocating the time slot resources to the uplink services of the industrial network elements; and generating an uplink Dynamic Bandwidth Allocation (DBA) scheduling message after allocating time slot resources for the uplink services of the industrial network elements, and sending the uplink DBA scheduling message to the ONU.
In some embodiments, the step of allocating a timeslot resource for uplink traffic of the plurality of industrial network elements includes: allocating time slot resources for uplink services of the industrial network elements with the periodic services in the plurality of industrial network elements; and after allocating the time slot resource for the uplink service of the industrial network element with the periodic service, allocating the time slot resource for the uplink service of the industrial network element with the aperiodic service in the plurality of industrial network elements.
In some embodiments, the step of allocating a timeslot resource for uplink traffic of an industrial network element having periodic traffic among the plurality of industrial network elements includes: and allocating time slot resources to the uplink service of each industrial network element with the periodic service in turn according to the sequence from small to large of the transmission period of the uplink service of all the industrial network elements with the periodic service.
In some embodiments, the configuration method further comprises: after the industrial network element with the largest data transmission quantity in the plurality of industrial network elements is deployed below other PON ports different from the current PON port where the ONU is located, judging whether the maximum value of the sending period of the remaining industrial network elements is smaller than the sum of the time slot resources; under the condition that the maximum value of the sending period of the remaining industrial network elements is smaller than the sum of the time slot resources, continuously deploying the industrial network element with the maximum data transmission quantity in the remaining industrial network elements below other PON ports different from the current PON port where the ONU is located; and under the condition that the maximum value of the sending periods of the rest industrial network elements is greater than or equal to the sum of the time slot resources, allocating the time slot resources for the uplink services of the rest industrial network elements.
In some embodiments, the uplink DBA scheduling packet includes information of timeslot resources allocated to uplink services of each industrial network element.
According to another aspect of the present disclosure, there is provided an optical line termination, OLT, comprising: the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring uplink service characteristics and equipment identity information of a plurality of industrial network elements connected with user ports of ONU, and the uplink service characteristics comprise the transmission period and bandwidth requirement information of uplink service of each industrial network element; an uplink resource allocation module, configured to obtain a maximum value of a sending period of the uplink services of the multiple industrial network elements based on the collected uplink service characteristics and the equipment identity information, and calculate a sum of time slot resources occupied by the multiple industrial network elements during periodic data transmission in the sending period of the maximum value, and deploy an industrial network element with a largest data transmission amount among the multiple industrial network elements below another PON port different from a current PON port where the ONU is located when the maximum value of the sending period is smaller than the sum of the time slot resources; an uplink resource scheduling module, configured to allocate a time slot resource to the uplink services of the multiple industrial network elements when the maximum value of the sending period is greater than or equal to the sum of the time slot resources; and the scheduling message issuing module is used for generating an uplink DBA scheduling message after allocating time slot resources for the uplink services of the industrial network elements and issuing the uplink DBA scheduling message to the ONU.
In some embodiments, the uplink resource scheduling module is configured to allocate a time slot resource for an uplink service of an industrial network element having a periodic service among the plurality of industrial network elements, and allocate a time slot resource for an uplink service of an industrial network element having an aperiodic service among the plurality of industrial network elements after allocating a time slot resource for an uplink service of an industrial network element having a periodic service.
In some embodiments, the uplink resource scheduling module is configured to sequentially allocate a time slot resource to the uplink service of each industrial network element with the periodic service according to a descending order of the transmission periods of the uplink services of all the industrial network elements with the periodic service.
In some embodiments, the uplink resource allocation module is further configured to, after the industrial network element with the largest data transmission amount among the plurality of industrial network elements is deployed below another PON port different from the current PON port where the ONU is located, determine whether a maximum value of a transmission period of the remaining industrial network elements is smaller than the sum of the time slot resources, and continue to deploy the industrial network element with the largest data transmission amount among the remaining industrial network elements below another PON port different from the current PON port where the ONU is located when the maximum value of the transmission period of the remaining industrial network elements is smaller than the sum of the time slot resources; and the uplink resource scheduling module is further configured to allocate the time slot resources to the uplink services of the remaining industrial network elements when the maximum value of the transmission periods of the remaining industrial network elements is greater than or equal to the sum of the time slot resources.
In some embodiments, the uplink DBA scheduling packet includes information of timeslot resources allocated to uplink services of each industrial network element.
According to another aspect of the present disclosure, there is provided an OLT including: a memory; and a processor coupled to the memory, the processor configured to perform the method as previously described based on instructions stored in the memory.
According to another aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method as previously described.
In the method, the periodic service uplink time slot resources of a plurality of network elements hung under the ONU are pre-configured based on the periodic service characteristics of the industrial network elements, the polling and resource re-scheduling allocation mechanism of the conventional PON system at fixed time intervals is cancelled, and unnecessary uplink burst time slot resources are saved, so that the uplink time slot resources are prevented from being frequently occupied to carry out repeated resource allocation as much as possible.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:
fig. 1 is a flowchart illustrating a configuration method for uplink traffic transmission capability of an ONU according to one embodiment of the present disclosure;
fig. 2 is a diagram illustrating an uplink timeslot resource scheduling method according to an embodiment of the present disclosure;
fig. 3 is a diagram illustrating a signaling message for uplink timeslot resource allocation according to an embodiment of the present disclosure;
fig. 4 is a flowchart illustrating a configuration method for uplink traffic transmission capability of an ONU according to another embodiment of the present disclosure;
figure 5 is a schematic diagram illustrating the structure of an optical line terminal according to one embodiment of the present disclosure;
fig. 6 is a schematic diagram showing a structure of an optical line terminal according to another embodiment of the present disclosure;
fig. 7 is a schematic diagram illustrating a structure of an optical line terminal according to another embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
In the present disclosure, when a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without intervening devices, or may be directly connected to the other devices without intervening devices.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a flowchart illustrating a configuration method for uplink traffic transmission capability of an ONU according to one embodiment of the present disclosure. As shown in fig. 1, the method includes steps S102 to S110.
In step S102, uplink service characteristics and device identity information of a plurality of industrial network elements connected to the user port of the ONU are collected, where the uplink service characteristics include a transmission period and bandwidth requirement information (i.e., required bandwidth) of an uplink service of each industrial network element.
Here, the plurality of industrial network elements connected to the user port of the ONU are the plurality of industrial network elements hung down by the ONU. The device identity information may include a Media Access Control Address (MAC) Address of the industrial network element, and the like. In this step, the OLT may acquire uplink service characteristics and device identity information of an industrial network element that is hung below the PON ONU.
In step S104, based on the collected uplink service characteristics and the device identity information, a maximum value (Tm) of a transmission period of the uplink services of the plurality of industrial network elements is obtained, and a total sum (To) of time slot resources occupied by the plurality of industrial network elements when data are transmitted periodically in the transmission period of the maximum value is calculated.
For example, taking a Gigabit-Capable Passive Optical network (GPON) system as an example, the uplink direction rate is 1Gbps (Gigabit per second), and the minimum unit of the conventional uplink timeslot is 125 μ s (microseconds), which is let to be T.
It can be calculated that 1Gbps, 125 μ s, 125000bit, 15.625KB (Kilobyte) can be transmitted in 125 μ s in the upstream direction.
For the uplink service requirement of the industrial network element, the acquired uplink service period and uplink transmission bandwidth requirement may be both converted into multiples of T to be represented, and a specific example is shown in table 1 below:
TABLE 1
As can be seen from table 1, the maximum value Tm of the uplink traffic periodicity characteristic is 8000T.
The total To of the time slot resources occupied by all the industrial network elements during the periodic data transmission is as follows:
To＝(8000/8)*T+(8000/80)*2T+(8000/800)*3T+(8000/4000)*4T+(8000/8000)*5T+(8000/8)*7T
＝1000*T+100*2T+10*3T+2*4T+5T+7000T
＝8243T
in step S106, in a case that the maximum value of the transmission period is smaller than the sum of the time slot resources, the industrial network element with the largest data transmission amount among the plurality of industrial network elements is deployed below another PON port different from the current PON port where the ONU is located.
For example, in the above example, Tm is 8000T, To is 8243T, i.e., Tm < To. At this time, it is necessary to separately allocate independent PON ports and ONU resources to the industrial network element F occupying the largest uplink timeslot resource, that is, the industrial network element F is deployed below other PON ports different from the current PON port where the ONU is located.
In the above steps, if Tm is less than To, the industrial network element with the largest data transmission quantity is deployed under another single PON port, and the above steps are repeated To ensure that Tm is greater than or equal To under all PON ports.
In some embodiments, the method may further comprise: after the industrial network element with the largest data transmission quantity in the plurality of industrial network elements is deployed below other PON ports different from the current PON port where the ONU is located, judging whether the maximum value of the sending period of the remaining industrial network elements is smaller than the sum of the time slot resources; under the condition that the maximum value of the sending period of the remaining industrial network elements is smaller than the sum of the time slot resources, continuously deploying the industrial network element with the largest data transmission amount in the remaining industrial network elements to other PON ports (the other PON ports herein may be the same ports as the other PON ports described above, or different ports) different from the current PON port where the ONU is located; and under the condition that the maximum value of the sending periods of the rest industrial network elements is larger than or equal to the sum of the time slot resources, allocating the time slot resources for the uplink services of the rest industrial network elements. By repeating the steps, it can be ensured that the maximum value Tm of the transmission periods of the industrial network elements under all PON ports is greater than or equal To the total To of the time slot resources occupied by the industrial network elements when the data are transmitted periodically.
In step S108, when the maximum value of the transmission period is greater than or equal to the sum of the time slot resources, the time slot resources are allocated to the uplink services of the plurality of industrial network elements.
For example, in the above example, after the industrial network element F is deployed below other PON ports, for the remaining network elements, To is recalculated To obtain To 1243T, and at this time, To is smaller than Tm, so that timeslot resources may be allocated To the uplink traffic of the remaining industrial network elements a To E.
In some embodiments, this step S108 includes: allocating time slot resources for uplink services of industrial network elements with periodic services in a plurality of industrial network elements; and after allocating the time slot resource for the uplink service of the industrial network element with the periodic service, allocating the time slot resource for the uplink service of the industrial network element with the aperiodic service in the plurality of industrial network elements.
In some embodiments, the step of allocating a timeslot resource for uplink traffic of an industrial network element having periodic traffic among a plurality of industrial network elements includes: and allocating time slot resources to the uplink service of each industrial network element with the periodic service in turn according to the sequence from small to large of the transmission period of the uplink service of all the industrial network elements with the periodic service.
That is to say, in the above embodiment, the uplink services of the network element may be sorted from small to large according to their periodicity, and the uplink transmission timeslot resources are first allocated to the service with the smallest period, and then the remaining periodic services are allocated according to the order from small to large. And after all the periodic services are distributed, distributing the residual time slot resources to the aperiodic services.
For example, as shown in fig. 2, in the network elements 1 to 3, the sequence from small to large according to the period is: the periodicity of network element 1 < the periodicity of network element 2 < the periodicity of network element 3. Then, the uplink transmission time slot resource is allocated to the service of the network element 1 with the minimum period, then the uplink transmission time slot resource is allocated to the service of the network element 2 with the middle period, then the uplink transmission time slot resource is allocated to the service of the network element 3 with the maximum period, and finally the remaining time slot resource is allocated to the non-periodic service.
In the above steps, according to the sequence from small to large of the network element service period, firstly allocating uplink DBA time slot resources for the network element with the minimum data transmission period, and then allocating sequentially according to the sequence until the allocation is completed; and after the uplink resources of all the periodic services are distributed, distributing the uplink resources for the rest aperiodic services.
In step S110, after allocating time slot resources for the uplink services of the multiple industrial network elements, an uplink DBA (Dynamic Bandwidth Allocation) scheduling packet is generated, and the DBA scheduling packet is sent to the ONU. For example, the DBA scheduling packet may include a GRANT packet (GRANT packet).
Thus far, a configuration method for uplink traffic transmission capability of an ONU according to some embodiments of the present disclosure has been described. The method comprises the following steps: acquiring uplink service characteristics and equipment identity information of a plurality of industrial network elements connected with user ports of the ONU, wherein the uplink service characteristics comprise the transmission period and bandwidth requirement information of uplink service of each industrial network element; acquiring the maximum value of the sending period of the uplink services of the industrial network elements based on the acquired uplink service characteristics and the equipment identity information, and calculating the sum of time slot resources occupied by the industrial network elements during the periodic data transmission in the sending period of the maximum value; under the condition that the maximum value of a sending period (namely the maximum value of the uplink time slot resources of the sending period of the PON port) is smaller than the sum of time slot resources (namely the sum of time slot resource requirements), deploying the industrial network element with the maximum data transmission quantity in the plurality of industrial network elements below other PON ports different from the current PON port where the ONU is located; under the condition that the maximum value of the sending period is greater than or equal to the sum of the time slot resources, allocating the time slot resources to the uplink services of the industrial network elements; and generating an uplink DBA scheduling message after allocating time slot resources for the uplink services of the plurality of industrial network elements, and issuing the uplink DBA scheduling message to the ONU. In this embodiment, the periodic service uplink timeslot resources of multiple network elements that are hung below the ONU are preconfigured based on the periodic service characteristics of the industrial network elements, a polling and resource re-scheduling allocation mechanism of the existing PON system at fixed time intervals (for example, 125 μ s) is cancelled, and unnecessary uplink burst timeslot resources are saved, so that frequent occupation of the uplink timeslot resources is avoided as much as possible to perform repeated resource allocation.
Further, the method optimizes the periodic transmission characteristics of the industrial scene when the periodic service is mainly used, reasonably allocates the OLT PON port resources and the uplink time slot resources in each maximum common period by calculating the periodic uplink time slot requirements of all the network elements, and allocates the uplink time slot resources for the aperiodic service after the periodic service uplink time slot resources are met. The method designs a reasonable scheduling mechanism according to the service characteristics and the periodicity characteristics of the industrial network elements, and realizes the deterministic network capability.
The inventor of the present disclosure also finds that the uplink burst timeslot resource in the prior art can only be accurate to the ONU, and cannot be individually and finely allocated to each network element hung below the ONU, so that it is difficult to implement the uplink direction deterministic service capability.
In view of this, the embodiments of the present disclosure provide an uplink DBA scheduling packet for uplink timeslot resource allocation. In some embodiments, the uplink DBA scheduling packet includes information of timeslot resources allocated for uplink traffic of each industrial network element. Therefore, uplink time slot resource allocation is refined to each industrial network element, the uplink deterministic time delay capability of the PON network under the industrial scene is effectively guaranteed and improved, and the industrial PON network can be supported to be applied to the deterministic industrial production network with low time delay requirements.
Fig. 3 is a diagram illustrating a signaling message for uplink timeslot resource allocation according to an embodiment of the present disclosure. The form of the uplink DBA scheduling packet is described in detail below with reference to fig. 3. For example, the uplink DBA scheduling packet is GRANT packet.
For example, as shown in fig. 3, ONU Y hangs down an industrial network element 1, an industrial network element 2, and an industrial network element 3, and ONU X hangs down an industrial network element 4, an industrial network element 5, and an industrial network element 6. In the uplink DBA scheduling message shown in fig. 3, the identity information of the industrial network elements 1 to 3(Target clients) that the ONU Y hangs down and the information of the timeslot resources allocated to the uplink services of each industrial network element 1 to 3 are included, including the Start time (Start time) and the size (Grant size) of the allocated timeslot resource time slice, the identity information of the industrial network elements 4 to 6 that the ONU X hangs down and the information of the timeslot resources allocated to the uplink services of each industrial network element 4 to 6 are also included, including the Start time and the size of the allocated timeslot resource time slice.
In the above embodiment, by adding information such as the network element hung below the ONU in the uplink DBA scheduling packet of the existing PON system, the uplink resource allocation is accurately assigned to the network element hung below the specific ONU, and the uplink direction deterministic service capability is improved.
Fig. 4 is a flowchart illustrating a configuration method for uplink traffic transmission capability of an ONU according to another embodiment of the present disclosure. As shown in fig. 4, the method includes steps S402 to S416. The method is performed by an OLT, for example, the OLT includes an acquisition module, an uplink resource allocation module, an uplink resource scheduling module, and a scheduling packet issuing module (described in detail later).
In step S402, the uplink service characteristics and device information of the industrial network element hung below the PON ONU are collected.
In step S404, the requirements of all network elements for uplink timeslot resources are counted. For example, based on the collected characteristic data, the maximum value (Tm) of the periodic characteristics of the uplink services of all industrial network elements is obtained, and the sum (To) of the time slot resources occupied by the periodic data transmission of all industrial network elements in the period is calculated. All industrial network elements described herein refer to all industrial network elements under which a certain ONU is hung.
In step S406, it is determined whether the maximum value of the transmission period of the uplink service of the industrial network element is smaller than the sum of the time slot resources occupied by the periodic data transmission of all the industrial network elements.
Here, the sum of time slot resources occupied by the periodic data transmission of all the industrial network elements is the uplink resource requirement of all the industrial network elements, and the maximum value of the transmission period of the uplink service of the industrial network elements is the PON port capability. That is, the step is to actually determine whether the uplink resource needs of all the industrial network elements exceed the PON port capability. If so, the process proceeds to step S408, otherwise, the process proceeds to step S410.
In step S408, new PON ports and ONU resources are allocated to the network element with the largest uplink resource requirement (i.e. the network element with the largest data transmission amount). And then repeating the steps To ensure that Tm is greater than or equal To under all PON ports.
In step S410, uplink timeslot resources are allocated for the periodic service. For example, according to the sequence from small to large of the network element service period, the uplink DBA time slot resource is allocated to the network element with the minimum data transmission period first, and then allocated in sequence according to the sequence until the allocation is completed.
In step S412, after the uplink resources of all the periodic services are allocated, uplink timeslot resources are allocated for the remaining aperiodic services.
In step S414, an uplink DBA scheduling packet is generated and the ONU is issued. For example, a GRANT message is allocated to an upstream burst timeslot of an existing PON system, and information of network unit on the ONU is added, so that upstream resource allocation is accurately assigned to a specific ONU network unit on the ONU, and upstream deterministic service capability is improved.
In step S416, the configuration is completed and normal service operation is started.
To this end, a configuration method for uplink traffic transmission capability of an ONU according to other embodiments of the present disclosure is provided. The method optimizes the traditional PON uplink bandwidth allocation mechanism aiming at the long-term stable periodic service bearing scene in the industrial scene, pre-configures the periodic service uplink time slot resources of all network elements based on the periodic service characteristics of the industrial network elements, designs a reasonable scheduling mechanism, realizes the deterministic network capacity, and avoids frequently occupying the uplink time slot resources to allocate repeated resources. And uplink time slot resource allocation is refined to each industrial network element by combining with the improved uplink DBA scheduling message, so that the uplink deterministic time delay capability of the PON network in an industrial scene is effectively ensured and improved, the industrial PON network can be supported to be applied to a deterministic industrial production network with extremely low time delay requirements, and the network performance in the industrial scene is improved.
Fig. 5 is a schematic diagram illustrating a structure of an optical line terminal according to an embodiment of the present disclosure. As shown in fig. 5, the olt includes an acquisition module 502, an uplink resource allocation module 504, an uplink resource scheduling module 506, and a scheduling packet issuing module 508.
The acquisition module 502 is configured to acquire uplink service characteristics and device identity information of a plurality of industrial network elements connected to the user ports of the ONUs. The uplink service characteristics comprise the transmission period and bandwidth requirement information of the uplink service of each industrial network element.
The uplink resource allocation module 504 is configured to obtain a maximum value of a sending period of the uplink services of the multiple industrial network elements based on the collected uplink service characteristics and the device identity information, and calculate a sum of time slot resources occupied by the multiple industrial network elements during periodic data transmission in the sending period of the maximum value, and deploy an industrial network element with a largest data transmission amount among the multiple industrial network elements below another PON port different from a current PON port where the ONU is located, in a case that the maximum value of the sending period is smaller than the sum of the time slot resources.
The uplink resource scheduling module 506 is configured to allocate the time slot resources to the uplink services of the plurality of industrial network elements when the maximum value of the transmission period is greater than or equal to the sum of the time slot resources.
In some embodiments, the uplink resource scheduling module 506 is configured to allocate a time slot resource for uplink traffic of an industrial network element having periodic traffic among the plurality of industrial network elements, and allocate a time slot resource for uplink traffic of an industrial network element having aperiodic traffic among the plurality of industrial network elements after allocating the time slot resource for uplink traffic of the industrial network element having periodic traffic.
In some embodiments, the uplink resource scheduling module 506 is configured to sequentially allocate time slot resources to the uplink traffic of each industrial network element with periodic traffic according to a descending order of the transmission periods of the uplink traffic of all industrial network elements with periodic traffic.
The scheduling message issuing module 508 is configured to generate an uplink DBA scheduling message after allocating a time slot resource for uplink services of multiple industrial network elements, and issue the uplink DBA scheduling message to an ONU.
For example, the uplink DBA scheduling packet includes information of timeslot resources allocated to the uplink service of each industrial network element.
To this end, an optical line terminal according to one embodiment of the present disclosure is provided. The optical line terminal comprises an acquisition module, an uplink resource allocation module, an uplink resource scheduling module and a scheduling message issuing module. In the optical line terminal, the uplink time slot resources of the periodic services of a plurality of network elements hung below the ONU are pre-configured based on the periodic service characteristics of the industrial network elements, and the uplink time slot resources are prevented from being frequently occupied to carry out repeated resource allocation as much as possible.
In some embodiments, the uplink resource allocation module 504 may be further configured to, after deploying an industrial network element with the largest data transmission amount among the multiple industrial network elements to a PON port different from the current PON port where the ONU is located, determine whether a maximum value of a transmission period of the remaining industrial network elements is smaller than a sum of time slot resources occupied by the multiple industrial network elements during periodic data transmission, and continue to deploy the industrial network element with the largest data transmission amount among the remaining industrial network elements to a PON port different from the current PON port where the ONU is located when the maximum value of the transmission period of the remaining industrial network elements is smaller than the sum of time slot resources.
In some embodiments, the uplink resource scheduling module 506 may be further configured to allocate a time slot resource to the uplink service of the remaining industrial network element when the maximum value of the sending period of the remaining industrial network element is greater than or equal to the sum of the time slot resources occupied by the plurality of industrial network elements during the periodic data transmission.
Fig. 6 is a schematic diagram showing a structure of an optical line terminal according to another embodiment of the present disclosure. The optical line terminal includes a memory 610 and a processor 620. Wherein:
the memory 610 may be a magnetic disk, flash memory, or any other non-volatile storage medium. The memory is used for storing instructions in the embodiments corresponding to fig. 1 and/or fig. 4.
In some embodiments, as may also be shown in figure 7, optical line terminal 700 includes memory 710 and processor 720. Processor 720 is coupled to memory 710 by BUS 730. The olt 700 may be coupled to an external storage device 750 via the storage interface 740 to retrieve external data, and may be coupled to a network or another computer system (not shown) via the network interface 760, which will not be described in detail herein.
In the embodiment, the data instruction is stored by the memory, the instruction is processed by the processor, and the uplink time slot resource of the periodic service of the plurality of network elements hung under the ONU is pre-configured based on the periodic service characteristic of the industrial network element, so that the uplink time slot resource is prevented from being frequently occupied to carry out repeated resource allocation as much as possible.
In other embodiments, the present disclosure also provides a computer-readable storage medium on which computer program instructions are stored, the instructions implementing the steps of the method in the embodiments corresponding to fig. 1 and/or fig. 4 when executed by a processor. As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Thus far, the present disclosure has been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (12)
1. A configuration method for uplink service transmission capability of an Optical Network Unit (ONU), comprising the following steps:
acquiring uplink service characteristics and equipment identity information of a plurality of industrial network elements connected with user ports of an ONU (optical network unit), wherein the uplink service characteristics comprise a sending period and bandwidth requirement information of uplink service of each industrial network element;
acquiring the maximum value of the sending period of the uplink services of the industrial network elements based on the acquired uplink service characteristics and the equipment identity information, and calculating the sum of time slot resources occupied by the industrial network elements during the periodic data transmission in the sending period of the maximum value;
under the condition that the maximum value of the sending period is smaller than the sum of the time slot resources, deploying the industrial network element with the maximum data transmission quantity in the plurality of industrial network elements to be below other PON ports different from the current PON port of the passive optical network where the ONU is located;
under the condition that the maximum value of the sending period is greater than or equal to the sum of the time slot resources, allocating the time slot resources to the uplink services of the industrial network elements; and
and after allocating time slot resources for the uplink services of the industrial network elements, generating an uplink Dynamic Bandwidth Allocation (DBA) scheduling message, and sending the uplink DBA scheduling message to the ONU.
2. The configuration method of claim 1, wherein the step of allocating the timeslot resources for the uplink traffic of the plurality of industrial network elements comprises:
allocating time slot resources for uplink services of the industrial network elements with the periodic services in the plurality of industrial network elements; and
and after allocating the time slot resources for the uplink service of the industrial network element with the periodic service, allocating the time slot resources for the uplink service of the industrial network element with the aperiodic service in the plurality of industrial network elements.
3. The configuration method according to claim 2, wherein the step of allocating a timeslot resource for uplink traffic of an industrial network element having periodic traffic among the plurality of industrial network elements comprises:
and allocating time slot resources to the uplink service of each industrial network element with the periodic service in turn according to the sequence from small to large of the transmission period of the uplink service of all the industrial network elements with the periodic service.
4. The configuration method of claim 1, further comprising:
after the industrial network element with the largest data transmission quantity in the plurality of industrial network elements is deployed below other PON ports different from the current PON port where the ONU is located, judging whether the maximum value of the sending period of the remaining industrial network elements is smaller than the sum of the time slot resources;
under the condition that the maximum value of the sending period of the remaining industrial network elements is smaller than the sum of the time slot resources, continuously deploying the industrial network element with the maximum data transmission quantity in the remaining industrial network elements below other PON ports different from the current PON port where the ONU is located;
and under the condition that the maximum value of the sending periods of the rest industrial network elements is greater than or equal to the sum of the time slot resources, allocating the time slot resources for the uplink services of the rest industrial network elements.
5. The configuration method of claim 1,
and the uplink DBA scheduling message comprises information of time slot resources allocated to the uplink service of each industrial network element.
6. An optical line termination, OLT, comprising:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring uplink service characteristics and equipment identity information of a plurality of industrial network elements connected with user ports of ONU, and the uplink service characteristics comprise the transmission period and bandwidth requirement information of uplink service of each industrial network element;
an uplink resource allocation module, configured to obtain a maximum value of a sending period of the uplink services of the multiple industrial network elements based on the collected uplink service characteristics and the equipment identity information, and calculate a sum of time slot resources occupied by the multiple industrial network elements during periodic data transmission in the sending period of the maximum value, and deploy an industrial network element with a largest data transmission amount among the multiple industrial network elements below another PON port different from a current PON port where the ONU is located when the maximum value of the sending period is smaller than the sum of the time slot resources;
an uplink resource scheduling module, configured to allocate a time slot resource to the uplink services of the multiple industrial network elements when the maximum value of the sending period is greater than or equal to the sum of the time slot resources; and
and the scheduling message issuing module is used for generating an uplink DBA scheduling message after allocating time slot resources for the uplink services of the industrial network elements and issuing the uplink DBA scheduling message to the ONU.
7. The OLT of claim 6, wherein,
the uplink resource scheduling module is configured to allocate a time slot resource to an uplink service of an industrial network element having a periodic service among the plurality of industrial network elements, and allocate a time slot resource to an uplink service of an industrial network element having an aperiodic service among the plurality of industrial network elements after allocating a time slot resource to the uplink service of the industrial network element having the periodic service.
8. The OLT of claim 6, wherein,
and the uplink resource scheduling module is used for sequentially allocating time slot resources to the uplink service of each industrial network element with the periodic service according to the sequence that the sending period of the uplink service of all the industrial network elements with the periodic service is from small to large.
9. The OLT of claim 6, wherein,
the uplink resource allocation module is further configured to, after deploying an industrial network element with the largest data transmission amount among the plurality of industrial network elements to a PON port different from the current PON port where the ONU is located, determine whether a maximum value of a transmission cycle of a remaining industrial network element is smaller than a sum of the time slot resources, and continue to deploy the industrial network element with the largest data transmission amount among the remaining industrial network elements to a PON port different from the current PON port where the ONU is located when the maximum value of the transmission cycle of the remaining industrial network element is smaller than the sum of the time slot resources;
and the uplink resource scheduling module is further configured to allocate the time slot resources to the uplink services of the remaining industrial network elements when the maximum value of the transmission periods of the remaining industrial network elements is greater than or equal to the sum of the time slot resources.
10. The OLT of claim 6, wherein,
and the uplink DBA scheduling message comprises information of time slot resources allocated to the uplink service of each industrial network element.
11. An OLT, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the method of any of claims 1-5 based on instructions stored in the memory.
12. A computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of any one of claims 1 to 5.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114338503A (en) * | 2022-01-04 | 2022-04-12 | 武汉烽火技术服务有限公司 | Method and device for adjusting domain resources in communication network |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1780223A (en) * | 2004-11-19 | 2006-05-31 | 上海贝尔阿尔卡特股份有限公司 | Various-service dispatching method and system in passive light network |
| KR100825763B1 (en) * | 2006-12-06 | 2008-04-29 | 한국전자통신연구원 | Dynamic bandwidth allocation apparatus and method for transmission efficiency extension in wdm/tdm-pon |
| CN109039444A (en) * | 2017-06-08 | 2018-12-18 | 中国电信股份有限公司 | ONU method for detecting abnormality, device, OLT and optical-fiber network |
| CN109274628A (en) * | 2017-07-17 | 2019-01-25 | 普天信息技术有限公司 | Uplink service sending method and device in a kind of multi-sub-band system |
-
2021
- 2021-09-28 CN CN202111142951.9A patent/CN113873361B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1780223A (en) * | 2004-11-19 | 2006-05-31 | 上海贝尔阿尔卡特股份有限公司 | Various-service dispatching method and system in passive light network |
| KR100825763B1 (en) * | 2006-12-06 | 2008-04-29 | 한국전자통신연구원 | Dynamic bandwidth allocation apparatus and method for transmission efficiency extension in wdm/tdm-pon |
| CN109039444A (en) * | 2017-06-08 | 2018-12-18 | 中国电信股份有限公司 | ONU method for detecting abnormality, device, OLT and optical-fiber network |
| CN109274628A (en) * | 2017-07-17 | 2019-01-25 | 普天信息技术有限公司 | Uplink service sending method and device in a kind of multi-sub-band system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114338503A (en) * | 2022-01-04 | 2022-04-12 | 武汉烽火技术服务有限公司 | Method and device for adjusting domain resources in communication network |
| CN114338503B (en) * | 2022-01-04 | 2022-11-22 | 武汉烽火技术服务有限公司 | Method and device for adjusting domain resources in communication network |
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