CN100531130C - Method and system for controlling flow based on bandwidth adjusting mechanism - Google Patents
Method and system for controlling flow based on bandwidth adjusting mechanism Download PDFInfo
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- CN100531130C CN100531130C CNB2006100610188A CN200610061018A CN100531130C CN 100531130 C CN100531130 C CN 100531130C CN B2006100610188 A CNB2006100610188 A CN B2006100610188A CN 200610061018 A CN200610061018 A CN 200610061018A CN 100531130 C CN100531130 C CN 100531130C
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Abstract
The invention relates to communication field, disclose a flow control method based on bandwidth adjustment mechanism, comprising : user data packets arrived at the hostel MSTP equipment from the source MSTP-end equipment; the MSTP equipment detect its own memory state, connect the link bandwidth of source MSTP equipment according to detection results, and send the regulating information to the sources MSTP equipment; the source MSTP equipment adjust its up-run bandwidth according to the above regulating information. The invention also discloses a network, comprising source MSTP equipment and hostel MSTP equipment. The MSTP equipment described comprises: FIFO state detection module, the FIFO receiving memory modules, FIFO sending memory modules, LCAS control modules and LCAS module. The invention transmits the congestion of the users' residential side in network to the source end users, avoid user data information packet loss, and achieve the end-to-end flow control for users.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of flow control methods based on bandwidth adjustment mechanism, and the network system that is applied to this method.
Background technology
Metropolitan area network obtains swift and violent development as the network that connects Access Network and core layer net in recent years.Operator wishes to provide more business support by metropolitan area network, makes network value added, revenue growth.But increase along with the Access Network data service, brought new problem by the huge data of quantity that the Local Area Network that inserts brings to metropolitan area network, because SDH (Synchronous Digital Hierarchy)/synchronous optical network (SDH/SONET) is a kind of circuit-switched technology, rather than packet system, be difficult to effectively handle the packet of burst and effective Bandwidth Management is provided.
Along with Virtual Concatenation (Virtual Concatenation, VCAT), Generic Framing Procedure (GenericFraming Procedure, GFP) and Link Capacity Adjustment Scheme (Link Capacity AdjustmentScheme, LCAS) be the appearance of the digital synchronous system of future generation (NG-SDH) of sign, make multi-service transport platform (Multiservice Transport Platform, MSTP) on different paths, bandwidth can be flexibly, dynamically distributed, and the application efficiency of network can be on the basis that the multi-service service is provided, improved effectively.
Cascade is a kind of data map technology that realizes on MSTP, and it can (VirtualContainer VC) combines, and keeps single container of bit sequence integrality to use as one with a plurality of virtual containers.The Virtual Concatenation technology is to be distributed in different SDH signal rate grade (STM-N, N is a positive integer) the virtual container (VC-n of specific specifications, n can be 11,12,2,3 etc.) according to the method for cascade, form a virtual container set (Virtual Container Group, VCG) transmit, wherein each VC-n all have independent structures and corresponding path overhead (Path Overhead, POH).Several VC-n Virtual Concatenations just are equivalent to interleaving of a plurality of VC-n.Each VC-n of Virtual Concatenation can independent transmission, selects different paths, and middle transmission equipment is not had specific demand, and only has special agreement to support requirement to terminal device aspect equipment.
LCAS is a kind of bandwidth varying distribution technique, and it has characteristics such as the flexible and dynamic adjustment of bandwidth, when user bandwidth changes, can adjust the quantity of virtual cascade group VC-n, and this adjustment can not produce user's regular traffic to be interrupted.In addition, the LCAS technology also provides a kind of fault tolerant mechanism, can strengthen the robustness of Virtual Concatenation: have a VC-n to lose efficacy in virtual cascade group, whole virtual cascade group was lost efficacy, but automatically the VC-n that lost efficacy is rejected from virtual cascade group, remaining normal VC-n continues transport service; After inefficacy VC-n recovered, system automatically added virtual cascade group with this VC-n again again.
GFP is a new frame-forming protocol, can be used for the transmission of fixed-length data bag, and because GFP has continued to use asynchronous transfer mode (Asynchronous Transfer Mode, that ATM) adopts controls (Header Error Control based on header error, HEC) mechanism that defines of frame also makes it can be used for the transmission of variable-length data package.GFP has opened up the ability of modulator-demodulator point-to-point transmission, and input traffic is arranged transmission in order, thereby has simplified the boundary positioning action of the synchronous and Frame of data link layer greatly.
Flow control is a kind of method of avoiding or reducing network congestion.In order to avoid LOF as far as possible, in connection-oriented network, can resend the frame of losing, or consult the maximum bandwidth that to transmit by sliding window mechanism.In connectionless network, operate by the transmitted traffic control information.The node that network congestion takes place is to the system's transmitted traffic control information that is connected; After source node is received this information, stop at once sending data to destination node.In the Ethernet of full duplex, flow control realizes that by the PAUSE function of 802.3x standard definition still the support to this function is the option of 802.3x standard.
For fear of or reduce network congestion, in present MSTP equipment, (Ethernet over SDH, flow control EOS) generally has two kinds of processing modes to SDH carrying Ethernet.
Prior art scheme one: do not carry out flow control and handle, that is, when appearance is congested in the SDH network, adopt the mode that directly abandons.
The advantage of this scheme is to implement fairly simplely, and shortcoming is:
1, there is the LOF situation; The frame that high-rise connection-oriented network layer needs repeatedly transmission again to be dropped, bandwidth availability ratio is low, and the terminal use's that finally slows down network response time;
2, because network congestion causes the continuous adjustment of bandwidth, the oscillation of flows phenomenon appears.
Prior art scheme two: the PAUSE function by the 802.3x standard definition realizes the flow control processing.
Fig. 2 shows Ethernet medium access control (Madia Access Control, MAC) structure of sublayer in the prior art.
Fig. 3 shows the structure of the MAC control sublayer of EOS in the prior art.
802.3x the method for operation of standard is to be that flow control messages is created a structure by optional MAC control sublayer, finishes to send and accept flow control information, flow control information sends by the PAUSE frame.Media access control sublayer in Fig. 2, Fig. 3 all is options of 802.3x standard.
Fig. 4 shows the flow control process of 802.3x standard in the prior art:
The data that device A converges are passed through the VCG pipeline of SDH to the equipment B transmission;
Equipment B sends PAUSE message to device A after receiving the buffer memory deficiency of message or surpassing certain thresholding, and data congestion is described, request suspends the transmission data;
After device A is received PAUSE message, stop to send message immediately;
Device A is restarted the transmission data after waiting for a period of time.
In said process, the time that device A is waited for equals the time out in the PAUSE frame.
Though such scheme has solved the problem of data-bag lost, but still there is following shortcoming:
1, the chronomere that requests timeout in the PAUSE frame can't be provided with;
2, the PAUSE frame is as the payload of SDH, and its transmission needs to conciliate through the encapsulation mapping process of mapping,
It is distant to add transmission range, and it is bigger to send to the source terminal delay time from Su Duan;
3, the PAUSE frame is subjected to the influence of congested flow easily as band inner control information.
Summary of the invention
In view of this, the invention provides a kind of flow control methods, in order to solve the system side data service flow control problem on MSTP equipment at present based on bandwidth adjustment.
The present invention also provides a kind of flow control network that is used for based on bandwidth adjustment, in order to solve the system side data service flow control problem on MSTP equipment at present.
Flow control methods based on bandwidth adjustment mechanism provided by the present invention comprises that data are being transferred to the place end user device and are carrying out following steps from the source end user device:
A, user data message arrive place end MSTP equipment from source end MSTP equipment;
B, place end MSTP Equipment Inspection self memory state are regulated the link bandwidth of connection source end MSTP equipment according to testing result, and adjusting information is sent to source end MSTP equipment;
C, source end MSTP equipment are regulated self upstream bandwidth according to aforementioned adjusting information.
Described source end MSTP equipment in the method for the invention and place end MSTP equipment are supported VCAT and LCAS function simultaneously.
Disclosed described source end MSTP equipment is linking to each other with place end MSTP equipment by the VCG pipeline in the inventive method.
In the method for the invention, step B further may further comprise the steps:
B1, place end MSTP equipment pass to the user data message that receives in the reception FIFO memory module of place end MSTP apparatus logic port;
B2, fifo status detection module obtain the storage depth information that receives the FIFO memory module;
B3, bandwidth adjustment control module are regulated the link bandwidth that place end MSTP equipment connects source end MSTP equipment according to the reception FIFO memory module depth information that is obtained;
B4, place end MSTP equipment are sent to source end MSTP equipment with aforementioned bandwidth adjustment information by network overhead.
The control module of bandwidth described in the method for the invention comprises LCAS control module and LCAS module.
The B3 of step described in the method for the invention further comprises:
B31, LCAS control module calculate the quantity of the VC that should increase or reduce in the end MSTP equipment VCG pipeline of place according to obtain to receive FIFO depth information, and the LCAS module is mail in regulating command;
Corresponding deletion of regulating command that B32, LCAS module basis are received or the quantity that increases VC in the end MSTP equipment VCG pipeline of place.
The algorithm that the control module of LCAS described in the method for the invention is calculated VC quantity among the VCG can be linear, also can be non-linear.
The C of step described in the method for the invention may further comprise the steps:
C1, source end MSTP equipment are received the instruction of VC quantity in the adjusting VCG pipeline that place end MSTP equipment sends;
The LCAS module of C2, source end MSTP equipment is according to the corresponding deletion of regulating command that receives or increase the ducted VC quantity of source end MSTP equipment VCG;
The fifo status detection module of C3, source end MSTP equipment obtains the depth information that sends the FIFO memory module and judges whether source end MSTP equipment data congestion takes place;
C4, source end MSTP equipment generation data congestion carry out flow control between source end MSTP equipment and source end user device.
The implementation method of described step C4 comprises: when source end MSTP equipment generation data congestion, the data that the source end user device is sent abandon;
Or
Adopt the 802.3x standard to carry out flow control.
The invention also discloses a kind of network, comprise source end MSTP equipment and place end MSTP equipment, and described source end MSTP equipment is connected to described place end MSTP equipment by the VCG pipeline, and described source end MSTP equipment is used for the user data message is sent to described place end MSTP equipment; Described place end MSTP equipment, be used to detect self memory state, regulate the link bandwidth of connection source end MSTP equipment according to testing result, and adjusting information is sent to source end MSTP equipment, make described source end MSTP equipment regulate upstream bandwidth according to aforementioned adjusting information.Described source end MSTP equipment and place end MSTP equipment are supported VCAT and LCAS function simultaneously.
Described source end MSTP equipment in the network disclosed in this invention and place end MSTP equipment include:
Send the FIFO memory module, be used for store M STP equipment and data message to be sent such as handled;
Receive the FIFO memory module, be used for the data message that store M STP apparatus logic port receives;
The fifo status detection module is used to obtain the depth information that sends FIFO memory module and reception FIFO memory module and judges whether to produce data congestion;
The LCAS control module is used for calculating the VC quantity of VCG and produces and send the bandwidth adjustment instruction;
The LCAS module is used for regulating bandwidth according to the bandwidth adjustment instruction of LCAS control module.
The VCG pipeline of described connection source end MSTP equipment and place end MSTP equipment is made up of a plurality of VC.
The present invention has well solved the data congestion problem that exists in the network, shows: do not need equipment to support MAC control sublayer, reduced network layer, reduced the realization difficulty; Do not need to send the PAUSE frame, avoid the influence of network delay by the network payload; By to middle transfer bandwidth adjustment, with the congested user source end that has been delivered to of user Su Duan, realize customer flow control end to end, avoided loss of user data.
Description of drawings
Fig. 1 is a MSTP network diagram in the prior art;
Fig. 2 is an ethernet mac control sublayer structure schematic diagram in the prior art;
Fig. 3 is the MAC control sublayer structure schematic diagram of EOS in the prior art;
Fig. 4 is the flow control process schematic diagram of 802.3x standard code in the prior art;
Fig. 5 is the structural representation of aggregation networks of the present invention;
Fig. 6 is the schematic diagram of the bandwidth adjustment flow control mechanism of the embodiment of the invention;
Fig. 7 is the schematic diagram that the LCAS of the embodiment of the invention regulates policing algorithm;
Fig. 8 reduces the schematic diagram of VCG pipeline bandwidth for place end MSTP equipment in the embodiment of the invention takes place when congested;
Fig. 9 increases the schematic diagram of VCG pipeline bandwidth in the embodiment of the invention during congested the alleviating of place end MSTP equipment.
Embodiment
The present invention is by configuration MSTP equipment in network, and the data that the source end user device is sent send to place end MSTP equipment by source end MSTP equipment, and finally arrive the place end user device via place end MSTP equipment.If the data that place end user device generation data congestion or place end MSTP equipment receive surpass self the transfer capability or the data of receiving ability or reception during less than preset threshold, carry out bandwidth adjustment, and adjusting information sent to source end MSTP equipment, source end MSTP equipment is according to the corresponding adjusting upstream bandwidth of receiving of bandwidth adjustment information, if therefore source end MSTP equipment produce data congestion, then between source end MSTP equipment and source end user device, carry out flow control strategy of the prior art, thereby reach customer flow control end to end.
Above-mentioned bandwidth adjustment process realizes by network of the present invention.Network source end MSTP equipment of the present invention and place end MSTP equipment suppose that source end MSTP equipment is connected to described place end MSTP equipment by the VCG pipeline of being made up of 48 VC12, and source end MSTP equipment and place end MSTP equipment are supported VCAT and LCAS function simultaneously.The characteristics of network of the present invention are that source end MSTP equipment and place end MSTP equipment include: the fifo status detection module is used to detect the store status of FIFO memory module; The LCAS control module is used to send accommodation zone wide instruction and LCAS module, is used to carry out bandwidth adjustment.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.Need to prove that embodiments of the invention only are used for explaining the present invention, rather than are used for limiting scope of the present invention.
Referring to Fig. 5, be the structural representation of aggregation networks of the present invention, under the situation that data congestion does not take place, its process operation data is as follows:
The data that source end user device CE_A, CE_C send arrive source end MSTP device A and C respectively;
Source end MSTP device A, C send to place end MSTP equipment B with the data that the receive VCG pipeline by separately;
Place end MSTP equipment B mails to place end user device CE_B with the data that receive.
If it is congested that data take place, then carry out following operation:
Place end MSTP equipment B is received the congestion messages of place end user device CE_B or is detected and self takes place congestedly, regulates self bandwidth and congestion information and the bandwidth adjustment information expense by SDH is sent to source end MSTP device A, C;
Source end MSTP device A, C receive after the bandwidth adjustment signal of place end MSTP equipment B transmission, regulate the bandwidth of self, and carry out Flow-rate adjustment at source end MSTP device A, C and subscriber equipment CE_A, CE_C according to the method for 802.3x standard definition, perhaps on source end MSTP device A, C, abandon the user data message of receiving.
The bandwidth adjustment flow control mechanism of the present invention under the data congestion situation takes place is embodied among Fig. 6: after user data arrives place end MSTP equipment B, be introduced into the reception FIFO memory module of VCG porch, the fifo status detection module detects the degree of depth of reception FIFO memory module and sends testing result to the bandwidth adjustment control module, after the depth information that receives the FIFO memory module surpasses certain threshold value, the bandwidth adjustment control module is regulated the quantity of the ducted VC12 of VCG, regulates bandwidth with this.
Fig. 7 is that a kind of LCAS of the embodiment of the invention regulates policing algorithm.After the LCAS control module is received the depth information of the reception FIFO memory module that the fifo status detection module sends, will calculate the bandwidth that allows input according to certain adjusting strategy.Adopted linear algorithm in the present embodiment: when the degree of depth that receives the FIFO memory module during smaller or equal to Len, the LCAS control module is not carried out bandwidth adjustment; When the degree of depth that receives the FIFO memory module during greater than Len, the LCAS control module is according to the number of VC12 in the diagram algorithm computation VCG pipeline, the bandwidth when promptly determining data congestion takes place.
Above embodiment only is a kind of algorithm of the present invention, and all can realize that the linearity of the object of the invention and nonlinear algorithm are all in design scope of the present invention.
Fig. 8 and Fig. 9 further show LCAS adjustment process of the present invention.
Fig. 8 is in the embodiment of the invention during place end MSTP equipment generation data congestion, and reduce the schematic diagram of VCG pipeline bandwidth: data flow arrives by the VCG pipeline and receives the FIFO memory module; The fifo status detection module detects the degree of depth that receives the FIFO memory module and surpasses certain threshold value, and testing result is sent to LCAS control module in the bandwidth adjustment control module; The number of the ducted VC12 of inlet VCG also sent to this information the LCAS module in the bandwidth adjustment control module after the LCAS control module was regulated according to adjusting policy calculation shown in Figure 7, sent the instruction of deleting VC12 to the LCAS module simultaneously; The LCAS module is dynamically deleted unnecessary VC12 in 48 VC12 of inlet VCG pipeline, no longer increase up to the degree of depth that receives the FIFO memory module.
Fig. 9 is in the embodiment of the invention during congested the alleviating of place end MSTP equipment, increase the schematic diagram of VCG pipeline bandwidth: the fifo status detection module detects the degree of depth that receives the FIFO memory module and is reduced to certain threshold value, and testing result is sent to LCAS control module in the bandwidth adjustment control module; The number of the ducted VC12 of inlet VCG also sent to this information the LCAS module in the bandwidth adjustment control module after the LCAS control module was regulated according to adjusting policy calculation shown in Figure 7, sent the instruction of increase VC12 simultaneously to the LCAS module; The LCAS module dynamically increases the number of VC12 in inlet VCG pipeline, reach poised state up to the degree of depth that receives the FIFO memory module.
What need further specify is; in the present invention; described VCG pipeline is made of 48 VC12; the embodiment that this only a kind of VCG pipeline constitutes; VC has had multiple model; use the design of the identical or similar function of any class VC realization, all within protection scope of the present invention.
Only lifted the described a kind of LCAS bandwidth adjustment strategy of Fig. 7 among the present invention, this does not also mean that to have only linear bandwidth adjustment strategy to be only the content that the present invention will protect.As previously mentioned, bandwidth adjustment strategy of the present invention not only can be linear, can also be non-linear.Simultaneously, because the number of VC can only be a natural number, therefore, bandwidth adjustment strategy of the present invention also can disperse.
The present invention mainly with place end MSTP equipment because the processing of the data congestion that self transfer capability deficiency causes, the place end user device generation data congestion but the present invention is equally applicable to, and this congestion information is sent to the situation of place end MSTP equipment.In this case, the congestion messages of place end user device directly is sent to the bandwidth adjustment control module of place end MSTP equipment, carries out the bandwidth adjustment by the bandwidth adjustment control module.
The present invention has solved the data congestion problem that exists in the communication network well, by adjustment to middle transfer bandwidth, the data congestion that user Su Duan equipment is taken place is delivered to the user source end, realize customer flow control end to end, reached the purpose of losing of avoiding infomational message in the user data.
The above embodiment only is preferred embodiment of the present invention; only be used for explaining the present invention; and can not be used for limiting scope of the present invention; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (13)
1, a kind of flow control methods based on bandwidth adjustment mechanism comprises:
A, user data message arrive place end MSTP equipment from source end MSTP equipment;
B, place end MSTP Equipment Inspection self memory state are regulated the link bandwidth of connection source end MSTP equipment according to testing result, and adjusting information is sent to source end MSTP equipment;
C, source end MSTP equipment are regulated upstream bandwidth according to aforementioned adjusting information.
2, the method for claim 1 is characterized in that, described source end MSTP equipment and place end MSTP equipment are supported VCAT and LCAS function simultaneously.
3, the method for claim 1 is characterized in that, described source end MSTP equipment is linking to each other with place end MSTP equipment by the VCG pipeline.
4, the method for claim 1 is characterized in that, described step B further may further comprise the steps:
B1, place end MSTP equipment pass to the user data message that receives in the reception FIFO memory module of place end MSTP apparatus logic port;
B2, fifo status detection module obtain the storage depth information that receives the FIFO memory module;
B3, bandwidth adjustment control module are regulated the link bandwidth that place end MSTP equipment connects source end MSTP equipment according to the reception FIFO memory module depth information that is obtained;
B4, place end MSTP equipment are sent to source end MSTP equipment with aforementioned bandwidth adjustment information by network overhead.
5, method as claimed in claim 4 is characterized in that, described bandwidth adjustment control module comprises LCAS control module and LCAS module.
6, method as claimed in claim 4 is characterized in that, described step B3 further comprises:
B31, LCAS control module calculate the quantity of the VC that should increase or reduce in the end MSTP equipment VCG pipeline of place according to obtain to receive FIFO depth information, and the LCAS module is mail in regulating command;
Corresponding deletion of regulating command that B32, LCAS module basis are received or the quantity that increases VC in the end MSTP equipment VCG pipeline of place.
7, method as claimed in claim 6 is characterized in that, the algorithm that described LCAS control module is calculated VC quantity among the VCG can be linear, also can be non-linear.
8, the method for claim 1 is characterized in that, described step C may further comprise the steps:
C1, source end MSTP equipment are received the instruction of VC quantity in the adjusting VCG pipeline that place end MSTP equipment sends;
The LCAS module of C2, source end MSTP equipment is according to the corresponding deletion of regulating command that receives or increase the ducted VC quantity of source end MSTP equipment VCG;
The fifo status detection module of C3, source end MSTP equipment obtains the depth information that sends the FIFO memory module and judges whether source end MSTP equipment data congestion takes place;
C4, source end MSTP equipment generation data congestion carry out flow control between source end MSTP equipment and source end user device.
9, method as claimed in claim 8 is characterized in that, the implementation method of described step C4 comprises: when source end MSTP equipment generation data congestion, the data that the source end user device is sent abandon;
Or
Adopt the 802.3x standard to carry out flow control.
10, a kind of network comprises source end MSTP equipment and place end MSTP equipment, it is characterized in that,
Described source end MSTP equipment is connected to described place end MSTP equipment by the VCG pipeline;
Described source end MSTP equipment is used for the user data message is sent to described place end MSTP equipment;
Described place end MSTP equipment, be used to detect self memory state, regulate the link bandwidth of connection source end MSTP equipment according to testing result, and adjusting information is sent to source end MSTP equipment, make described source end MSTP equipment regulate upstream bandwidth according to aforementioned adjusting information.
11, network as claimed in claim 10 is characterized in that,
Described source end MSTP equipment and place end MSTP equipment are supported VCAT and LCAS function simultaneously.
12, network as claimed in claim 10 is characterized in that, described source end MSTP equipment and place end MSTP equipment include:
Send the FIFO memory module, be used for store M STP equipment and data message to be sent such as handled;
Receive the FIFO memory module, be used for the data message that store M STP apparatus logic port receives;
The fifo status detection module is used to obtain the depth information that sends FIFO memory module and reception FIFO memory module and judges whether to produce data congestion;
The LCAS control module is used for calculating the VC quantity of VCG and produces and send the bandwidth adjustment instruction;
The LCAS module is used for regulating bandwidth according to the bandwidth adjustment instruction of LCAS control module.
13, network as claimed in claim 10 is characterized in that, the VCG pipeline of described connection source end MSTP equipment and place end MSTP equipment is made up of a plurality of VC.
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| CN101184041B (en) * | 2007-12-07 | 2011-05-04 | 烽火通信科技股份有限公司 | Method for implementing automatic grading bandwidth regulation on multi-service transmission platform |
| CN101582839B (en) * | 2008-05-14 | 2012-06-27 | 华为技术有限公司 | Method, device and system for regulating data traffic |
| CN101771617B (en) * | 2010-03-08 | 2013-07-10 | 瑞斯康达科技发展股份有限公司 | Method and system for following point-to-point bandwidth, remote terminal equipment and home terminal equipment |
| CN103577266B (en) * | 2012-07-31 | 2017-06-23 | 国际商业机器公司 | For the method and system being allocated to field programmable gate array resource |
| CN103023803B (en) * | 2012-12-12 | 2015-05-20 | 华中科技大学 | Method and system for optimizing virtual links of fiber channel over Ethernet |
| CN104092623A (en) * | 2013-04-01 | 2014-10-08 | 株式会社日立制作所 | Method and device used for carrying out overload protection on network node or server |
| CN105591983B (en) * | 2015-10-30 | 2020-01-07 | 新华三技术有限公司 | QoS outlet bandwidth adjusting method and device |
| CN108242969B (en) * | 2016-12-23 | 2021-04-20 | 华为技术有限公司 | Transmission rate adjusting method and network equipment |
| CN106612240B (en) * | 2016-12-27 | 2019-07-30 | 郑州云海信息技术有限公司 | A kind of storage high-efficiency network connection system and method |
| CN111726822A (en) * | 2019-03-21 | 2020-09-29 | 大唐移动通信设备有限公司 | Trap message processing method and data synchronization management device |
| CN113473644B (en) * | 2021-06-23 | 2023-08-08 | 深圳供电局有限公司 | 5G-based inter-station communication method of stability control device and stability control device |
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