CN104506440B - The data packet sending method and routing table amending method of router - Google Patents
The data packet sending method and routing table amending method of router Download PDFInfo
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- CN104506440B CN104506440B CN201410830240.4A CN201410830240A CN104506440B CN 104506440 B CN104506440 B CN 104506440B CN 201410830240 A CN201410830240 A CN 201410830240A CN 104506440 B CN104506440 B CN 104506440B
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Abstract
The invention provides the data packet sending method of router and routing table amending method, it is related to electronic information field.Routing table amending method provided in an embodiment of the present invention, it is by pre-establishing multiple secondary routing tables, each secondary routing table is used for access path corresponding to the thread offer different into the router, whole threads are made not access same secondary routing table simultaneously, and specified secondary routing table is pinned and modified successively, so that secondary routing table will not pin simultaneously, whole threads namely in router will not be stopped simultaneously, this also just makes because the time changed secondary routing table and make thread be stopped is shared out, even if routing table is modified, also router will not be caused to carry out the reduction of transmission efficiency to packet in some period, and modification time interval and each secondary routing table by setting secondary routing table receive the number of threads accessed, the rational work efficiency for controlling router.
Description
Technical field
The present invention relates to electronic information field, is repaiied in particular to the data packet sending method and routing table of router
Change method.
Background technology
Router is a part indispensable in network today, and router realizes that network is mutual by forwarding packet
Even.The network architecture as shown in Figure 1, by router A, router B, switch A, B and corresponding computer composition.
When packet is specifically sent, e.g., if (1) PC-A will transmit packets to PC-C, if PC-A does not have
PC-C IP address, then PC-A first have to send dns request, router A or dns resolution server can return to PC-A
Answer PC-C ip addresses, to improve IP address information, such PC-A on packet third layer IP address information with regard to complete：Source
IP address：PC-A, purpose ip address：PC-C.
(2) next how PC-A is it is to be understood that to reach PC-C, and then, PC-A can send arp address resolution request,
This address resolution request is sent, is not configured to obtain destination host PC-C MAC Address, but has sent a request to route
In device A, then the MAC Address in router A can be sent to source host PC-A, to improve mac address information, such PC-A number
Also complete, the source MAC according to the second layer information of bag：PC-A MAC Address, target MAC (Media Access Control) address：Router A MAC Address,
(3) and then data can reach switch A, and switch A is seen the second layer target MAC (Media Access Control) address of packet, is destined to
Router A's, packet is just sent to router A, router A receives packet, first looks at the third layer ip of packet
Destination address, if there is the route for going to PC-C in the routing table of oneself, it is a routable packet to illustrate this,
According to local routing table is stored in, packet is sent into next network node (router B), and then complete packet
Transmission.
Router carries out the process of IP restructuring and packet.The layer-2 header information of this packet, router are changed first
PC-A, which reaches PC-C, will pass through a wide area network, can encapsulate the related agreement of many wide area networks herein.Its act on also for
Look for the information of next stage.The packet re-graduation to the second layer and third layer is tested simultaneously.Data are sent out by Internet
Go.Finally pass through many network nodes, and be ultimately routed in destination host PC_C.
In correlation technique, each network node is in IP packet transfer procedures are carried out, typically multiple thread serial process roads
By table, cause route processing efficiency too low.Wherein, routing table refers to storing on router or other network nodes
Table, there is the path for reaching particular network terminal in the table.
Routing table can modify (such as according to the situation of user at any time：Addition, delete routing rule), when modification is route
During table, routing table is first pinned, does not allow thread to conduct interviews it, caused whole threads to be both needed to be stopped, repaiied etc. routing table
Change after discharging, thread can just go to access (read-write) routing table.It is, in the related art, due to changing routing table, meeting
Router is caused to carry out the reduction of transmission efficiency to packet in some period.
The content of the invention
It is above-mentioned to solve it is an object of the invention to provide the data packet sending method of router and routing table amending method
The problem of.
The data packet sending method of router is provided in an embodiment of the present invention, including：
Pass through packet corresponding to specified thread acquisition；
According to entrained operation code in the packet, searched in the secondary routing table corresponding with the thread described in
Access path corresponding to operation code, a router includes multiple secondary routing tables, and each secondary routing table is used for institute
Access path corresponding to thread offer different in router is provided；
The packet is transmitted according to the access path got.
Preferably, each secondary routing table is corresponding with a thread, and each secondary routing table only allows
One thread pool access path.
Preferably, each secondary routing table is corresponding with multiple threads, corresponding with a secondary routing table
Multiple threads be used to handle classification identical affairs, and each secondary routing table only allows multiple institutes corresponding thereto
State thread pool access path.
The embodiment of the present invention additionally provides routing table amending method, including：
If receiving modification routing table instruction, the secondary routing table specified is pinned successively, the secondary routing table for making and being lockable
Corresponding thread can not be accessed it, and a router includes multiple secondary routing tables, and each secondary routing table is used for institute
Access path corresponding to thread offer different in router is provided；
The secondary routing table pinned is modified according to default mode；
By the secondary routing table release of modified completion, make the thread corresponding with the secondary routing table specified can
To access it.
Preferably, the secondary routing table specified of pinning includes：
According to default interval time, each secondary routing table in the router is pinned successively.
Preferably, it is described according to default interval time, each secondary routing table in the router is pinned successively
Including：
After changing and discharging a secondary routing table, next secondary route is lived according still further to default sequence lock
Table, until each secondary routing table in the router is changed and discharged.
Preferably, in addition to：Every the predetermined review time, check whether to receive the modification routing table instruction.
Preferably, in addition to：The predetermined review time is the 2-5 seconds.
Preferably, each secondary routing table is corresponding with a thread, and each secondary routing table only allows
One thread pool access path.
Preferably, each secondary routing table is corresponding with multiple threads, corresponding with a secondary routing table
Multiple threads be used to handle classification identical affairs, and each secondary routing table only allows multiple institutes corresponding thereto
State thread pool access path.
Routing table amending method provided in an embodiment of the present invention, with it is of the prior art by will in a router it is unique
A routing table first pin, the thread in router can not be conducted interviews to the routing table, enter in the routing table that will lock up
Row modification, makes router during modification can not normally perform work, and then the efficiency for transmitting packet is reduced and compared, and it is logical
Cross and pre-establish multiple secondary routing tables, each secondary routing table is used for the thread different into the router and provides corresponding access
Path, whole threads is not accessed same secondary routing table simultaneously, and specified secondary routing table is pinned and carried out successively
Modification so that secondary routing table will not pin simultaneously, that is, whole threads in router will not be stopped simultaneously, and this is also
Make, because the time changed secondary routing table and make thread be stopped is shared out, even if modifying to routing table, also will not
Cause router some period to packet carry out transmission efficiency reduction, so as to solve it is of the prior art not
Foot.
Brief description of the drawings
Fig. 1 shows the traditional network architecture for including router in correlation technique；
Fig. 2 shows the basic procedure of the data packet sending method of the router of the embodiment of the present invention；
Fig. 3 shows the basic procedure of the routing table amending method of the embodiment of the present invention；
Fig. 4 shows main routing table and the modification order signal of secondary routing table of the routing table amending method of the embodiment of the present invention
Figure.
Embodiment
The present invention is described in further detail below by specific examples of the implementation and with reference to accompanying drawing.The present invention is implemented
Example 1 provides the data packet sending method of router, as shown in Fig. 2 comprising the following steps：
S101, pass through packet corresponding to specified thread acquisition；
S102, according to entrained operation code in packet, the search operation generation in the secondary routing table corresponding with thread
Access path corresponding to code, a router includes multiple secondary routing tables, and each secondary routing table is used for into router
Access path corresponding to different thread offers；
S103, packet is transmitted according to the access path got.
Thread is the controlling stream of some single order in process.Also referred to as lightweight process (lightweight
processes).Computer science terms, refer to the thread of active program.
Thread, sometimes referred to as Lightweight Process (Lightweight Process, LWP), it is the minimum that program performs stream
Unit.The thread of one standard is by Thread Id, current instruction pointer (PC), set of registers and storehouse composition.In addition, thread is
An entity in process, is the base unit independently dispatched and assigned by system, and thread oneself does not possess system resource, only gathered around
A little essential resource, but it can share what process was possessed with belonging to other threads of a process together in operation
Whole resources.One thread can create and cancel another thread, can concurrently be held between multiple threads in same process
OK.Due to the mutual restriction between thread, thread is caused to show discontinuity in operation.Thread also has ready, obstruction and fortune
Three kinds of basic status of row.At least one thread of each program, if program only has a thread, that is, program is in itself.
Thread is a single sequential control flow in program.Thread namely one controls the minimum that can be performed
Unit, therefore, when a process is handling affairs when, actually completed by multiple smaller threads, if one
Smaller thread is not included in individual process, then it is to complete to specify affairs under some specific environment to be then considered as this process
Least unit.Thus, thread signified in the present embodiment, which is interpreted as performing some in router, has specific function
Controlling stream, the concept of this controlling stream should include traditional process or thread.
It is the most basic bar that router is operated by packet corresponding to the acquisition of some thread in step S101
Part.The thread specified when this packet is handled, according to predetermined step held by data that can be in packet
OK.
, it is necessary to set secondary routing table in advance for one or more threads in step S102, and establish secondary routing table and line
The corresponding relation of journey, secondary routing table that each thread is accessed and corresponding with itself.Establishing secondary routing table and thread
Can be one-to-one or one-to-many relation, that is, secondary routing table can be by a thread when corresponding relation
Conduct interviews, can also be conducted interviews by multiple threads, but a routing table can not be by whole threads in same router
Conduct interviews.Secondary routing table and the routing table in correlation technique can be corresponding to complete corresponding relation or part
Relation, that is, the content of secondary routing table can be perfectly correlated with the content of the routing table in correlation technique, recites and local
The related full detail of router, so that thread conducts interviews to it；It can also be content described in each secondary routing table
A simply part for the content of the routing table in correlation technique, the information as a complete routing table of router is included are divided into
Four parts, are A, B, C and D respectively, in secondary routing table it is entrained can be in A, B, C and D some, certain two, or
Person three, but need to ensure be in entrained in secondary routing table be to provide what is accessed to corresponding thread enough,
The thread namely specified can obtain necessary information by accessing with the secondary routing table corresponding to the thread.
After secondary routing table is got out, each thread is when queried access path is needed, it is only necessary to accesses and is somebody's turn to do
The corresponding secondary routing table of thread.Routing table access mode in correlation technique (only has a route in each router
Table), the routing table in same router is merely able to access same routing table, and multiple threads are in a serial manner
Routing table is conducted interviews, or multiple threads can not conduct interviews to routing table simultaneously, thus also can be to a certain extent
Limit the processing speed of thread.And the data packet sending method of router provided by the present invention, due to for one or more lines
Secondary routing table has been separately configured in journey, and therefore, the thread in same router can access different secondary routing tables respectively, also
Each thread is accessed corresponding secondary routing table simultaneously, and then obtain corresponding access path, this also just makes line
Journey to specified secondary routing table when conducting interviews, it is not necessary to wait the access of other threads to terminate, or wait when
Between greatly reduce, so as to improve the efficiency that thread obtains access path, also just improve the treatment effeciency of thread.
In step S103, each thread obtains predetermined access path, only by accessing corresponding secondary routing table
Need to deliver a packet to the address specified according to the access path got, so as to complete routing table to packet
Forwarding work.
Further, it is contemplated that specific use environment, Ke Yishi, each secondary routing table is corresponding with a thread, and often
Individual secondary routing table only allows a thread pool access path.
For each secondary one thread corresponding thereto of configuration so that only this thread can be to the secondary road
Conducted interviews by table.So that no longer need to be lined up when thread conducts interviews to routing table, raising thread that can be higher
Treatment effeciency.
Specifically, when being modified to each secondary routing table can according to existing for script in router main road by
Table and carry out.Described main routing table and the routing table in correlation technique are phase same-actions herein, and main routing table has grasped this
The relevant information such as whole access path in router.Modification information is received in main routing table, and is completed just one after modification
It is secondary that each secondary routing table is modified, that is, the modification of secondary routing table is modification according to main routing table.As shown in figure 4,
Main routing table modification terminate after, just start successively, be provided at pre-determined intervals and each secondary routing table modified.Namely
Main routing table is modified after modification is completed to the first secondary routing table, after completing the first secondary routing table modification, to second
Secondary routing table is modified, and after completing the second secondary routing table modification, is modified to the 3rd secondary routing table, until all secondary roads
Changed and completed by table.
But if the thread in a router is excessive, for each thread configure a secondary routing table can take it is more
System resource.In order to overcome the problem, Ke Yishi, each secondary routing table is corresponding with multiple threads, with a secondary routing table
Corresponding multiple threads are used to handle classification identical affairs, and each secondary routing table only allows corresponding thereto multiple
Thread pool access path.
The multiple threads corresponding with a secondary routing table can belong to same program, so, the secondary routing table
In can only deposit the content associated with these threads, unnecessary can not deposit, to reduce the occupancy volume of system resource.Class
Other identical affairs can perform similar action etc. such as same application program.By multiple lines in same router
Cheng Jinhang sorts out, and for each species thread a secondary routing table is respectively configured being capable of redundancy pair routing table in reduction system
Quantity, and the processing speed of thread can be improved to a certain extent.
Whether be one secondary routing table of each thread or multiple thread configurations, can according to secondary routing table phase
The situation of corresponding thread, to determine the quantity of content in secondary routing table, the content that the thread corresponding with itself uses less than
Without storage, to reduce the occupancy quantity of system resource.
The data packet sending method of router provided by the present invention, by pre-setting multiple secondary routing tables, and often
Individual secondary routing table is used for access path corresponding to the thread offer different into the router, and is used in view of specific
Situation, can be that a secondary routing table corresponding with a thread or a secondary routing table and multiple threads are corresponding,
So as to which when thread needs routing table corresponding to access, each thread in same router can access corresponding thereto
The secondary routing table answered, so that the situation that thread when routing table is accessed, will not be lined up, improves the processing of thread
Speed.
The embodiment of the present invention 2 provides routing table amending method, as shown in figure 3, comprising the following steps：
S201, if receiving modification routing table instruction, the secondary routing table specified is pinned successively, the secondary road for making and being lockable
It can not be accessed by the corresponding thread of table, a router includes multiple secondary routing tables, and each secondary routing table is used for
The access path corresponding to the offer of different threads into router；
S202, the secondary routing table pinned is modified according to default mode；
S203, the secondary routing table of modified completion is discharged, make the thread corresponding with the secondary routing table specified can be with
It is accessed.
The routing table amending method that the present embodiment is provided, the packet sender of the router provided with embodiment 1
Method is similar, it is also desirable to establishes the corresponding relation of secondary routing table and thread.
Namely need to set secondary routing table in advance for one or more threads, and establish pair of secondary routing table and thread
It should be related to, secondary routing table that each thread is accessed and corresponding with itself.Establishing secondary routing table and the corresponding pass of thread
Can be one-to-one or one-to-many relation when being, that is, secondary routing table can be visited by a thread
Ask, can also be conducted interviews by multiple threads, but a routing table can not be visited by whole threads in same router
Ask.Secondary routing table can be relation completely corresponding to corresponding relation or part with the routing table in correlation technique,
The content for being exactly secondary routing table can be perfectly correlated with the content of the routing table in correlation technique, recites and local router phase
The full detail of pass, so that thread conducts interviews to it；Can also be that content described in each secondary routing table is correlation
A part for the content of routing table in technology, the information as a complete routing table of router is included are divided into four parts,
A, B, C and D respectively, in secondary routing table it is entrained can be in A, B, C and D some, certain two, or certain three
It is individual, but need to ensure be in entrained in secondary routing table be to provide what is accessed to corresponding thread enough, that is,
The thread specified can obtain necessary information by accessing with the secondary routing table corresponding to the thread.The present embodiment Zhong Fu roads
It is identical by the function and effect and the function of the secondary routing table in embodiment 1 and effect of table, here, repeating no more.
In correlation technique, there was only a unique routing table in a router, when being modified to routing table,
Need to pin this unique routing table, discharging after the modification, that is, need the thread to be conducted interviews to routing table, on road
It can not be worked when being lockable by table.So also just reduce the treatment effeciency of thread.
And routing table amending method provided by the present invention, in step S101, due to having built up a lot of pair routing table,
Therefore, when needing to modify to routing table, when change in specific in routing table, that is, need to each secondary routing table
Modify, or the secondary routing table to including given content is modified.Every time to the whole in a router
, it is necessary to pin each routing table respectively when routing table is modified, the modification of particular content, modification are carried out after pinning again
Process and correlation technique in modification process be identical, here, repeating no more.But in order to ensure in same router
Multiple threads will not be stopped simultaneously, and each secondary routing table for needing to change can be performed successively in a predetermined sequence
The action pinned, change and discharged.Namely whole secondary routing tables will not modify simultaneously, and this also just makes same router
In thread will not be stopped simultaneously.
Step S102 modifies to secondary routing table according to predetermined manner.
In step S103, the routing table for completing modification is discharged, enables the thread corresponding with the secondary routing table to it
Conduct interviews, that is, the thread corresponding with the routing table has recovered normal work.
It should be noted that when being modified to routing table, can be after upper one secondary routing table completes modification,
Next secondary routing table is modified again or is modified to predetermined degree in a secondary routing table, or is started
Change the predetermined time and then next routing table is modified and (change and moved comprising pinning, modification and release three herein
Make).
Further, in step S201, pinning the secondary routing table specified includes：
According to default interval time, each secondary routing table in router is pinned successively.
Namely in order to shorten the overall modification duration of routing table, meanwhile, in order that in certain time in same router
Thread the number of threads that is stopped will not be excessive simultaneously, can start successively to each pair according to default interval time
The modification of routing table.
Further, according to default interval time, each secondary routing table pinned successively in router includes：
After changing and discharging a secondary routing table, next secondary routing table is lived according still further to default sequence lock, until road
Changed and discharged by each secondary routing table in device.
Namely after the modification of a secondary routing table is completed, starting the modification of next secondary routing table, so
Just reasonably can control in a period of time, the number of threads being stopped.
In order to preferably check whether there is routing table modification instruction, routing table amending method provided by the present invention also wraps
Include：Every the predetermined review time, check whether to receive modification routing table instruction.
The predetermined review time is the 2-5 seconds.
, can be to be repaiied in a predetermined sequence to secondary routing table as long as checking new routing table modification instruction
Change.
It is similar with the routing table provided in embodiment 1
It is corresponding with a thread in view of specific use environment, Ke Yishi, each secondary routing table, and each secondary route
Table only allows a thread pool access path.
For each secondary one thread corresponding thereto of configuration so that only this thread can be to the secondary road
Conducted interviews by table.So that no longer need to be lined up when thread conducts interviews to routing table, raising thread that can be higher
Treatment effeciency.
If the thread in a router is excessive, configures a secondary routing table for each thread and can take and more be
System resource.In order to overcome the problem, Ke Yishi, each secondary routing table is corresponding with multiple threads, relative with a secondary routing table
The multiple threads answered are used to handle classification identical affairs, and each secondary routing table only allows multiple threads corresponding thereto
Queried access path.
The multiple threads corresponding with a secondary routing table can belong to same program, so, the secondary routing table
In can only deposit the content associated with these threads, unnecessary can not deposit, to reduce the occupancy volume of system resource.Class
Other identical affairs can perform similar action etc. such as same application program.By multiple lines in same router
Cheng Jinhang sorts out, and for each species thread a secondary routing table is respectively configured being capable of redundancy pair routing table in reduction system
Quantity, and the processing speed of thread can be improved to a certain extent.
Whether be one secondary routing table of each thread or multiple thread configurations, can according to secondary routing table phase
The situation of corresponding thread, to determine the quantity of content in secondary routing table, the content that the thread corresponding with itself uses less than
Without storage, to reduce the occupancy quantity of system resource.
Also, in view of specific modification situation, in order that the secondary routing table in modification state simultaneously in a period of time
Quantity control within certain amount, also for shorten global revision time, can be according to the content number in secondary routing table
Measure to determine that the modification order of secondary routing table and two neighboring secondary routing table start the difference of modification time point.
Number of threads according to corresponding to secondary routing table is different, or the thread importance corresponding to secondary routing table is not
Together, first the secondary routing table more than corresponding number of threads can be modified, or it is stronger to corresponding thread importance
Secondary routing table modify.
Routing table amending method provided in an embodiment of the present invention, by pre-establishing multiple secondary routing tables, each secondary route
Table makes whole threads not access simultaneously same for access path corresponding to the thread offer different into the router
Secondary routing table, and specified secondary routing table is pinned and modified successively so that secondary routing table will not pin simultaneously, also
It is that whole threads in router will not be stopped simultaneously, this also just makes to make thread be stopped due to changing secondary routing table
Time shared out, even if being modified to routing table, also router will not be caused to enter in some period to packet
The reduction of row transmission efficiency, and to be spaced by the way that there is provided the modification order of secondary routing table and modification, make in same router
Secondary routing table can more quickly finish modification, and overall modification time is shorter, existing so as to preferably solve
Deficiency in technology.
Obviously, those skilled in the art should be understood that above-mentioned each step of the invention can be filled with general calculating
To put to realize, they can be concentrated on single computing device, or are distributed on the network that multiple computing devices are formed,
Alternatively, they can be realized with the program code that computing device can perform, it is thus possible to be stored in storage device
In performed by computing device, they are either fabricated to each integrated circuit modules respectively or by multiple moulds in them
Block or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software
With reference to.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. the data packet sending method of router, it is characterised in that including：
Pass through packet corresponding to specified thread acquisition；
According to entrained operation code in the packet, the operation is searched in the secondary routing table corresponding with the thread
Access path corresponding to code, a router includes multiple secondary routing tables, and each secondary routing table is used for the road
The access path as corresponding to providing thread different in device；
The packet is transmitted according to the access path got.
2. the data packet sending method of router according to claim 1, it is characterised in that each secondary routing table with
One thread is corresponding, and each secondary routing table only allows a thread pool access path.
3. the data packet sending method of router according to claim 1, it is characterised in that each secondary routing table with
Multiple threads are corresponding, are used to handle classification identical thing with the corresponding multiple threads of the secondary routing table
Business, and each secondary routing table only allows multiple thread pool access path corresponding thereto.
4. routing table amending method, it is characterised in that including：
If receiving modification routing table instruction, the secondary routing table specified is pinned successively, is made relative with the secondary routing table being lockable
The thread answered can not be accessed it, and a router includes multiple secondary routing tables, and each secondary routing table is used for the road
The access path as corresponding to providing thread different in device；
The secondary routing table pinned is modified according to default mode；
By the secondary routing table release of modified completion, allow the thread corresponding with the secondary routing table specified right
It is accessed.
5. routing table amending method according to claim 4, it is characterised in that described to pin the secondary routing table bag specified
Include：
According to default interval time, each secondary routing table in the router is pinned successively.
6. routing table amending method according to claim 5, it is characterised in that it is described according to default interval time, according to
The secondary each secondary routing table pinned in the router includes：
After changing and discharging a secondary routing table, next secondary routing table is lived according still further to default sequence lock, directly
Each secondary routing table into the router is changed and discharged.
7. routing table amending method according to claim 4, it is characterised in that also include：Every the predetermined review time,
Check whether to receive the modification routing table instruction.
8. routing table amending method according to claim 7, it is characterised in that also include：The predetermined review time
For the 2-5 seconds.
9. routing table amending method according to claim 4, it is characterised in that each secondary routing table with described in one
Thread is corresponding, and each secondary routing table only allows a thread pool access path.
10. routing table amending method according to claim 4, it is characterised in that each secondary routing table and multiple institutes
State that thread is corresponding, be used to handle classification identical affairs with the corresponding multiple threads of the secondary routing table, and often
The individual secondary routing table only allows multiple thread pool access path corresponding thereto.
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| WO2017000281A1 (en) * | 2015-07-01 | 2017-01-05 | 冯旋宇 | Data transmission method for multiple access devices in router and router |
| CN111314222A (en) * | 2020-02-12 | 2020-06-19 | 杭州涂鸦信息技术有限公司 | Routing data scheduling method and system suitable for load balancing |
| CN111431805B (en) * | 2020-03-27 | 2021-01-12 | 上海天好信息技术股份有限公司 | Internet of things multi-channel signal multiplexing synchronization strategy method |
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