CN110049388B - Distributed OLT data processing method and distributed OLT equipment - Google Patents
Distributed OLT data processing method and distributed OLT equipment Download PDFInfo
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Abstract
The invention relates to a distributed OLT data processing method and a distributed OLT device, wherein the method comprises the following steps: configuring a plurality of GPON service interface modules and a plurality of XGPON service processing modules according to the required service capacity; arranging the GPON service interface modules on the back plate in parallel to form a low-rate service area; arranging the XGPON service processing modules on the back plate in parallel to form a high-speed service area; bridging every two GPON service interface modules and each GPON service interface module through a low-speed backboard bus; bridging the low-rate service area and the high-rate service area through a low-rate backboard bus; bridging every two XGPON service processing modules and the XGPON service processing modules through a high-speed backboard bus. The invention can improve the utilization rate of bandwidth, increase the density of low-rate service interfaces, and simultaneously, can carry out smooth upgrade when the service capacity is increased.
Description
Technical Field
The present invention relates to the field of electronic and information technologies, and in particular, to a distributed OLT data processing method and a distributed OLT device.
Background
The network access technology of operators goes through technologies such as DSL, HFC, FTTN, FTTB, FTTC, FTTSA and the like, so that the network access efficiency and the user bandwidth are greatly improved, the network experience of users is effectively improved, especially the latest FTTH (Fibre To The Home, fiber to the home) fiber access technology is used for directly connecting the fiber to the home of the users (or the place required by the users), the problem of information transmission of the last kilometer is solved, the bandwidth, the wavelength and the transmission technology types are not limited, and the network access technology is suitable for introducing various new services, is an optimal service transparent network and is the optimal mode for the development of the access network at present.
However, with the arrival of applications such as 4K video, VR and 5G, the FTTH service bandwidth needs to be larger and larger, the mainstream GPON network is difficult to meet the service application needs slowly, the next generation network needs to be gradually and smoothly upgraded to the XGPON network, in the network evolution process, the GPON service interface and the XGPON service interface coexist, the OLT device needs to support the GPON service board and the XGPON service board at the same time, and the traditional OLT device GPON (low rate) service board and the XGPON (high rate) service board, and the uplink GE (low rate) service module and the 10GE (high rate) service module share the device slot resources.
The current OLT technical architecture mainly has a structural style as shown in fig. 1, and OLT equipment mainly comprises a back board, a GPON service (gpon\xgpon) module arranged on the back board, a main control exchange module, an uplink ethernet (GE/10 GE) service module, a fan module and a power module, wherein the GPON service module is used for accessing data services from optical fibers to users, and the main control exchange module is used for converging the services to the uplink ethernet (GE/10 GE) service module to access an operator network. The above-described construction has at least the following disadvantages:
1) The low-rate service module occupies the slot position of the high-rate service module, the bandwidth utilization rate is low, and the number of service ports is small.
2) The services of the high-speed service module and the low-speed service module are exchanged in a concentrated manner through the main control exchange module, and the low-speed service module adopts a high-speed backboard bus for adapting the concentrated exchange, so that the hardware cost is high.
Disclosure of Invention
Based on this, it is necessary to provide a distributed OLT data processing method and a distributed OLT device, so as to increase the bandwidth utilization, increase the low-rate service interface density, and at the same time, perform smooth upgrade when the service capacity increases.
In order to achieve the above object, the present invention adopts the following technical scheme.
The invention firstly provides a data processing method of a distributed OLT, wherein the OLT comprises a back plate, and the method comprises the following steps:
configuring a plurality of GPON service interface modules and a plurality of XGPON service processing modules according to the required service capacity;
arranging the GPON service interface modules on the back plate in parallel to form a low-rate service area;
arranging the XGPON service processing modules on the back plate in parallel to form a high-speed service area;
bridging every two GPON service interface modules and each GPON service interface module through a low-speed backboard bus; bridging the low-rate service area and the high-rate service area through a low-rate backboard bus;
bridging every two XGPON service processing modules and each XGPON service processing module through a high-speed backboard bus;
judging whether the required service capacity exceeds a preset value;
if the preset value is exceeded, configuring a plurality of main control exchange modules to form a service exchange area;
according to the relative layout of the low-rate service area and the high-rate service area, arranging the plurality of main control exchange modules on the backboard in parallel;
bridging the service switching area and the high-rate service area through a high-rate backboard bus;
if the low-rate service area and the high-rate service area are in a vertical insertion layout, that is, the low-rate service area and the high-rate service area are in a one-to-one corresponding parallel connection, the service switching area is embedded in the high-rate service area, and the high-rate backboard bus is utilized to bridge with the XGPON service processing modules;
if the low-rate service area and the high-rate service area are in a transverse insertion layout, that is, the low-rate service area and the high-rate service area are in a serial connection relation of stacking in sequence, the service switching area is arranged at the output end of the high-rate service area, so that the low-rate service area, the high-rate service area and the service switching area are arranged in sequence, and the plurality of main control switching modules and the plurality of XGPON service processing modules are bridged by utilizing a high-rate backboard bus.
Preferably, the GPON service interface modules are detachably connected to the back board through slots respectively.
The invention also provides a distributed OLT device, which comprises a back plate, a plurality of GPON service interface modules and a plurality of XGPON service processing modules, wherein the GPON service interface modules are arranged on the back plate in parallel to form a low-rate service area; arranging the XGPON service processing modules on the back plate in parallel to form a high-speed service area; and each two GPON service interface modules are bridged with each other through a low-speed backboard bus; bridging the low-rate service area and the high-rate service area through a low-rate backboard bus; bridging every two XGPON service processing modules and each XGPON service processing module through a high-speed backboard bus;
the system also comprises a plurality of main control exchange modules, wherein the plurality of main control exchange modules form a service exchange area; the master control exchange modules are arranged on the backboard in parallel; the service switching area and the high-speed service area are bridged by a high-speed backboard bus.
Preferably, a vertical insertion layout is arranged between the low-rate service area and the high-rate service area, that is, the low-rate service area and the high-rate service area are in one-to-one corresponding parallel connection, and the service switching area is embedded in the high-rate service area and is bridged with the xGPON service processing modules through a high-rate backboard bus.
Preferably, a horizontal insertion layout is arranged between the low-rate service area and the high-rate service area, that is, a serial connection relationship of stacking in sequence is arranged between the low-rate service area and the high-rate service area, the service switching area is arranged at the output end of the high-rate service area, so that the low-rate service area, the high-rate service area and the service switching area are sequentially arranged, and the plurality of main control switching modules and the plurality of XGPON service processing modules are bridged through a high-rate backboard bus.
Preferably, the GPON service interface modules are detachably connected to the back board through slots respectively.
Preferably, the distributed OLT apparatus further includes a fan module for dissipating heat from each module and a power module for supplying power to each module, where the fan module and the power module are electrically connected to each module respectively.
Compared with the prior art, the invention has the following advantages:
1. the bandwidth utilization rate of the backboard can be effectively improved, and the interface density of the low-rate service area is increased;
2. and selecting whether to adopt the main control exchange module according to the required service capacity, so that the hardware cost of the product is effectively reduced when the service capacity is not large.
3. By adopting a distributed architecture, when the service capacity is not large, only the GPON service interface module and the XGPON service processing module support are required to be configured, and a main control exchange module is not required; when the service capacity is increased, smooth upgrading can be realized by adding the main control exchange module, and the equipment does not need to be purchased again so as to be compatible with the large service capacity.
4. With the increase of service capacity, when the low-rate service interface is smoothly upgraded to the high-rate service interface, the whole physical dismantling of the low-rate service area is structurally supported, so that the occupied space of equipment is saved.
Drawings
Fig. 1 is a schematic diagram of an OLT architecture according to the prior art;
fig. 2 is a schematic flow chart of a data processing method of a distributed OLT in an embodiment of the present invention;
fig. 3 is a schematic diagram of a vertical plug layout structure of an OLT technical architecture in an embodiment of the present invention;
fig. 4 is a schematic diagram of a cross-plug layout structure of an OLT technical architecture in an embodiment of the present invention.
Detailed Description
Further description will be made with reference to the accompanying drawings and specific embodiments.
As shown in fig. 2, the present invention provides a distributed OLT (Optical Line Terminal ) data processing method, where the OLT includes a back plane, and various circuits and electronic components are disposed on the back plane, and the method includes the following steps:
s1: configuring a plurality of GPON service interface modules and a plurality of XGPON service processing modules according to the required service capacity;
s2: arranging the GPON service interface modules on the back plate in parallel to form a low-rate service area;
s3: arranging the XGPON service processing modules on the back plate in parallel to form a high-speed service area;
s4: bridging every two GPON service interface modules and each GPON service interface module through a low-speed backboard bus; bridging the low-rate service area and the high-rate service area through a low-rate backboard bus;
s5: bridging every two XGPON service processing modules and the XGPON service processing modules through a high-speed backboard bus.
The GPON service interface module is a low-rate service access optical interface module with an uplink rate peak value of 1.25Gbps and a downlink rate peak value of 2.5Gbps, and is hereinafter referred to as a low-rate service module.
The XGPON service processing module is a high-rate service access optical interface module with a line rate peak value of 2.5Gbps and a downlink rate peak value of 10Gbps, and is hereinafter referred to as a high-rate service module.
The high-rate backplane bus herein refers to a backplane bus with a transmission rate higher than 10Gbps, and the low-rate backplane bus refers to a backplane bus with a transmission rate lower than 10 Gbps.
In step S4, bridging between every two GPON service interface modules and each GPON service interface module through a low-rate backplane bus, and bridging between each of the low-rate service area and each of the high-rate service area through a low-rate backplane bus are based on cost consideration, and because the communication bandwidths between each of the GPON service interface modules and each of the low-rate service area and each of the high-rate service area are based on the PON service interface module, only a low-rate backplane bus with lower cost is required, and if a high-rate backplane bus is used, performance is excessive and unnecessary cost is increased.
Similarly, in step S5, the high-rate back board bus bridge is adopted for each two XGPON service processing modules to pass through, because the communication broadband between the XGPON service processing modules is larger, the high-rate back board bus bridge must be used to fully exert the performance of the product, and the hardware surplus is avoided.
In addition, the distributed OLT data processing method of the present embodiment further includes the following steps:
s6: judging whether the required service capacity exceeds a preset value;
s7: if the preset value is exceeded, configuring a plurality of main control exchange modules to form a service exchange area;
s8: according to the relative layout of the low-rate service area and the high-rate service area, arranging the plurality of main control exchange modules on the backboard in parallel;
s9: bridging the service exchange area and the high-speed service area through a high-speed backboard bus.
Typically, determining the required traffic capacity is empirically determined, and the predetermined value is set according to the FTTH traffic bandwidth requirements of the user. When the service bandwidth is large enough, the required service capacity can be considered to exceed a preset value, and at the moment, the user terminal is considered to be a high-capacity service terminal.
For the high-capacity service end, the technical architecture of the corresponding OLT equipment can adopt a vertical plug layout and a horizontal plug layout.
Because the low-rate service module is used for accessing the data service from the optical fiber to the user, and the main control exchange module is used for converging the data service to the high-rate service module so as to access the operator network, the vertical insertion layout adopts the technical architecture shown in fig. 3, and the horizontal insertion layout adopts the technical architecture shown in fig. 4.
Therefore, in step S8, the step of arranging the plurality of master control switch modules on the back board in parallel according to the relative layout of the low rate service area and the high rate service area specifically includes:
s81: if the low-rate service area and the high-rate service area are in a vertical insertion layout, that is, the low-rate service area and the high-rate service area are in a one-to-one corresponding parallel connection, the service switching area is embedded in the high-rate service area, and the high-rate backboard bus is utilized to bridge with the XGPON service processing modules.
S82: if the low-rate service area and the high-rate service area are in a transverse insertion layout, that is, the low-rate service area and the high-rate service area are in a serial connection relation of stacking in sequence, the service switching area is arranged at the output end of the high-rate service area, so that the low-rate service area, the high-rate service area and the service switching area are arranged in sequence, and the plurality of main control switching modules and the plurality of XGPON service processing modules are bridged by utilizing a high-rate backboard bus.
The communication bandwidth of each module and the backboard bus can be fully utilized by the structural style, so that the utilization rate of the backboard bandwidth is improved.
In this embodiment, the GPON service interface modules are detachably connected to the back board through the slots, so that when the service capacity is increased, the whole low-rate service area is physically removed from the structure and directly inserted into the high-rate service module, thereby replacing the low-rate service area with the high-rate service area, not only realizing smooth upgrade of the system, but also saving the space of the machine room occupied by the equipment.
The invention also provides a distributed OLT device, which comprises a backboard, a plurality of GPON service interface modules and a plurality of XGPON service processing modules, wherein the GPON service interface modules are arranged on the backboard in parallel to form a low-rate service area; arranging the XGPON service processing modules on the back plate in parallel to form a high-speed service area; and each two GPON service interface modules are bridged with each other through a low-speed backboard bus; bridging the low-rate service area and the high-rate service area through a low-rate backboard bus; bridging every two XGPON service processing modules and the XGPON service processing modules through a high-speed backboard bus.
Likewise, when the required service capacity exceeds a preset value, a plurality of main control exchange modules can be set, and the plurality of main control exchange modules form a service exchange area; the master control exchange modules are arranged on the backboard in parallel; the service switching area and the high-speed service area are bridged by a high-speed backboard bus.
As shown in fig. 3, a vertical insertion layout may be adopted between the low-rate service area and the high-rate service area in this embodiment, that is, the low-rate service area and the high-rate service area are in a one-to-one parallel relationship, and the service switching area is embedded in the high-rate service area and bridged with the XGPON service processing modules through a high-rate backplane bus.
As shown in fig. 4, a cross-plug layout may also be adopted between the low-rate service area and the high-rate service area in this embodiment, that is, a serial relationship between the low-rate service area and the high-rate service area that are stacked in sequence, where the service switching area is disposed at an output end of the high-rate service area, so that the low-rate service area, the high-rate service area and the service switching area are sequentially arranged, and the plurality of main control switching modules and the plurality of XGPON service processing modules bridge each other through a high-rate backplane bus.
In order to facilitate smooth upgrade of the system, the GPON service interface modules are detachably connected to the back board through slots respectively. When the service capacity is increased, the whole low-rate service area is physically removed from the structure and is directly inserted into the high-rate service module, so that the low-rate service area is replaced by the high-rate service area, the smooth upgrading of the system is realized, and the space of a machine room occupied by equipment is saved.
In addition, the distributed OLT equipment further comprises a fan module for radiating heat for each module and a power module for supplying power for each module, and the fan module and the power module are respectively and electrically connected with each module.
In summary, the invention has the following advantages:
1. the bandwidth utilization rate of the backboard can be effectively improved, and the interface density of the low-rate service area is increased;
2. and selecting whether to adopt the main control exchange module according to the required service capacity, so that the hardware cost of the product is effectively reduced when the service capacity is not large.
3. By adopting a distributed architecture, when the service capacity is not large, only the GPON service interface module and the XGPON service processing module support are required to be configured, and a main control exchange module is not required; when the service capacity is increased, smooth upgrading can be realized by adding the main control exchange module, and the equipment does not need to be purchased again so as to be compatible with the large service capacity.
4. With the increase of service capacity, when the low-rate service interface is smoothly upgraded to the high-rate service interface, the whole physical dismantling of the low-rate service area is structurally supported, so that the occupied space of equipment is saved.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (5)
1. A method for processing data of a distributed OLT, the OLT comprising a back-plane, the method comprising the steps of:
configuring a plurality of GPON service interface modules and a plurality of XGPON service processing modules according to the required service capacity;
arranging the GPON service interface modules on the back plate in parallel to form a low-rate service area;
arranging the XGPON service processing modules on the back plate in parallel to form a high-speed service area;
bridging every two GPON service interface modules and each GPON service interface module through a low-speed backboard bus; bridging the low-rate service area and the high-rate service area through a low-rate backboard bus;
bridging every two XGPON service processing modules and each XGPON service processing module through a high-speed backboard bus;
judging whether the required service capacity exceeds a preset value;
if the preset value is exceeded, configuring a plurality of main control exchange modules to form a service exchange area;
according to the relative layout of the low-rate service area and the high-rate service area, arranging the plurality of main control exchange modules on the backboard in parallel;
bridging the service switching area and the high-rate service area through a high-rate backboard bus;
if the low-rate service area and the high-rate service area are in a vertical insertion layout, that is, the low-rate service area and the high-rate service area are in a one-to-one corresponding parallel connection, the service switching area is embedded in the high-rate service area, and the high-rate backboard bus is utilized to bridge with the XGPON service processing modules;
if the low-rate service area and the high-rate service area are in a transverse insertion layout, that is, the low-rate service area and the high-rate service area are in a serial connection relation of stacking in sequence, the service switching area is arranged at the output end of the high-rate service area, so that the low-rate service area, the high-rate service area and the service switching area are arranged in sequence, and the plurality of main control switching modules and the plurality of XGPON service processing modules are bridged by utilizing a high-rate backboard bus.
2. The distributed OLT data processing method of claim 1, wherein the plurality of GPON service interface modules are detachably connected to the backplane through slots, respectively.
3. A distributed OLT apparatus comprising a backplane, characterized in that: the system also comprises a plurality of GPON service interface modules and a plurality of XGPON service processing modules, wherein the GPON service interface modules are arranged on the back plate in parallel to form a low-rate service area; arranging the XGPON service processing modules on the back plate in parallel to form a high-speed service area; and each two GPON service interface modules are bridged with each other through a low-speed backboard bus; bridging the low-rate service area and the high-rate service area through a low-rate backboard bus; bridging every two XGPON service processing modules and each XGPON service processing module through a high-speed backboard bus;
the system also comprises a plurality of main control exchange modules, wherein the plurality of main control exchange modules form a service exchange area; the master control exchange modules are arranged on the backboard in parallel; the service switching area and the high-rate service area are bridged by a high-rate backboard bus;
if the low-rate service area and the high-rate service area are in a vertical insertion layout, namely the low-rate service area and the high-rate service area are in a one-to-one corresponding parallel connection, the service switching area is embedded in the high-rate service area and is bridged with the XGPON service processing modules through a high-rate backboard bus;
if the low-rate service area and the high-rate service area are in a transverse insertion layout, namely, the low-rate service area and the high-rate service area are in a serial connection relation of stacking in sequence, the service switching area is arranged at the output end of the high-rate service area, so that the low-rate service area, the high-rate service area and the service switching area are sequentially arranged, and the plurality of main control switching modules and the plurality of XGPON service processing modules are bridged through a high-rate backboard bus.
4. The distributed OLT apparatus of claim 3, wherein: the GPON service interface modules are detachably connected to the backboard through slots respectively.
5. The distributed OLT apparatus of claim 4, wherein: the distributed OLT equipment further comprises a fan module for radiating heat for each module and a power module for supplying power for each module, and the fan module and the power module are respectively and electrically connected with each module.
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| CN113382317B (en) * | 2020-03-09 | 2022-05-10 | 中国电信股份有限公司 | Optical communication method, system, OLT and ONU |
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