CN107302575A - A kind of synchronous Internet of Things access node and the method and system of money order elementary time - Google Patents
A kind of synchronous Internet of Things access node and the method and system of money order elementary time Download PDFInfo
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- CN107302575A CN107302575A CN201710463235.8A CN201710463235A CN107302575A CN 107302575 A CN107302575 A CN 107302575A CN 201710463235 A CN201710463235 A CN 201710463235A CN 107302575 A CN107302575 A CN 107302575A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
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Abstract
The present embodiments relate to internet of things field, the method and system of a kind of synchronous Internet of Things access node and money order elementary time are disclosed, this method includes：Access node periodically sends the first packet to filtering gateway；The access node address information that filtering gateway includes according to the first packet, convergence unit is transmitted to by the first packet；Converge unit and receive the first packet, and return to the second packet；The access node address information that filtering gateway includes according to the second packet, access node is transmitted to by the second packet；Access node receives the second packet, send time point, the first reception time point of the first packet, the second transmission time point of the second packet and the second packet according to the first of the first packet second receives time point, the time bias value between access node and convergence unit is calculated, the time of itself is adjusted according to time bias value；For the time between access node in synchronous Internet of Things and convergence unit.
Description
Technical field
The present invention relates to internet of things field, and in particular to a kind of synchronous Internet of Things access node and money order elementary time
Method and system.
Background technology
Internet of Things is digitized all things by sensor, REID, location technology etc., networking, in thing
Efficient information interactive mode is realized between product, between article and people, between people and actual environment.During temporal information is Internet of Things
Basic parameter, in many applications of Internet of Things, such as condition adjudgement of access node or internet-of-things terminal equipment, access node
Mutual collaboration, the data fusion of access node etc., all time precision is had higher requirements, completion information gathering can be cooperateed with to appoint
Business.Because time synchronized requires different in different application, also cause monitoring, manage these equipment and become difficult, therefore, the time
Synchronously become one of important subject of Internet of Things.
The content of the invention
The embodiment of the invention discloses a kind of synchronous Internet of Things access node and the method and system of money order elementary time, use
Time in synchronous Internet of Things between access node and convergence unit, realize effective management to internet of things equipment.
A kind of method that first aspect present invention discloses synchronous Internet of Things access node and money order elementary time, can be wrapped
Include：
Access node periodically sends the first packet to filtering gateway, and first packet includes the access node
First transmission time point of address information and first packet；
The access node address information that the filtering gateway includes according to first packet, under convergence unit
It is preferential forwarding packet that first packet is identified in the forwarding rule list of hair, and first packet is transmitted into institute
State convergence unit；
The convergence unit receives first packet, and returns to the second packet, and second packet includes institute
Access node address information is stated, described first time point is sent, the first of first packet receives time point and described the
The second of two packets sends time point；
The access node address information that the filtering gateway includes according to second packet, from the forwarding rule
It is preferential forwarding packet that second packet is then identified in table, and second packet is transmitted into the access saves
Point；
The access node receives second packet, according to described first send time point, first receive time point,
Second transmission time point and the second reception time point for receiving second packet, calculate the access node and converged with described
Time bias value between poly- unit, the time of itself is adjusted according to the time bias value.
As an alternative embodiment, in first aspect present invention, the access node is periodically to screen pack
Close and send the first packet, it may include：
The access node periodically obtains the device type of the terminal device in its wireless network coverage and described
Terminal device uploads the period of data；
The access node sends the first packet to filtering gateway, and first packet includes the terminal device
Device type, the terminal device upload period, the access node address information and first packet of data
First sends time point；
The access node address information that the filtering gateway includes according to first packet, under convergence unit
It is preferential forwarding packet that first packet is identified in the forwarding rule list of hair, and first packet is transmitted into institute
Convergence unit is stated, including：
The access node address information that the filtering gateway includes according to first packet, the terminal device
Device type and the terminal device upload periods of data, identify institute from the forwarding rule list that issues of convergence unit
It is preferential forwarding packet to state the first packet, and first packet is transmitted into the convergence unit.
As an alternative embodiment, in first aspect present invention, the filtering gateway is according to the described first number
Data are uploaded according to the access node address information, the device type of the terminal device and the terminal device included
It is preferential forwarding packet that first packet is identified in period, the forwarding rule list issued from convergence unit, by institute
State the first packet and be transmitted to the convergence unit, including：
The filtering gateway from the forwarding rule list with finding out the access node that includes with first packet
The target forwarding that the period that location information, the device type of the terminal device and the terminal device upload data is associated is excellent
First level, whether be highest forwarding priority in the forwarding rule list, if it is, by institute if judging the target forwarding priority
State the first packet and be transmitted to the convergence unit.
As an alternative embodiment, in first aspect present invention, first packet also refers to including direction
Indicating is known；The access node address information that the filtering gateway includes according to first packet, under convergence unit
It is preferential forwarding packet that first packet is identified in the forwarding rule list of hair, and first packet is transmitted into institute
Stating convergence unit includes：
The access node address information that the filtering gateway includes according to first packet, under convergence unit
It is preferential forwarding packet that first packet is identified in the forwarding rule list of hair, and according to the first packet bag
The direction sign included, the convergence unit is transmitted to by first packet.
As an alternative embodiment, in first aspect present invention, second packet also refers to including direction
Indicating is known, the access node address information that the filtering gateway includes according to second packet, from the forwarding rule
It is preferential forwarding packet that second packet is then identified in table, and second packet is transmitted into the access saves
Point, including：
The access node address information that the filtering gateway includes according to second packet, from the forwarding rule
Then identify that second packet refers to for preferential forwarding packet, and the direction included according to second packet in table
Indicating is known, and second packet is transmitted into the access node.
The system that second aspect of the present invention discloses a kind of synchronous Internet of Things access node and money order elementary time, can be wrapped
Include：
Access node, sends the first packet, first packet includes described connect for periodicity to filtering gateway
First transmission time point of ingress address information and first packet；
The filtering gateway, for the access node address information included according to first packet, from convergence
It is preferential forwarding packet that first packet is identified in the forwarding rule list that unit is issued, and first packet is turned
Issue the convergence unit；
The convergence unit, for receiving first packet, and returns to the second packet, the second packet bag
Include the access node address information, the first transmission time point, the first reception time point of first packet and institute
State the second packet second sends time point；
The filtering gateway is additionally operable to, the access node address information included according to second packet, from institute
State and identify that second packet is preferential forwarding packet in forwarding rule list, second packet is transmitted to described
Access node；
The access node is additionally operable to, and receives second packet, and time point, the first reception are sent according to described first
Time point, the second transmission time point and the second reception time point for receiving second packet, calculate the access node
Time bias value between the convergence unit, the time of itself is adjusted according to the time bias value.
As an alternative embodiment, in second aspect of the present invention, the access node is used for periodically to mistake
Filter screen close send the first packet mode be specially：
The access node be used for the device type for periodically obtaining terminal device in its wireless network coverage and
The terminal device uploads the period of data；
The access node is additionally operable to send the first packet to filtering gateway, and first packet includes the terminal
The device type of equipment, the terminal device upload period, the access node address information and first number of data
Time point is sent according to the first of bag；
The filtering gateway is additionally operable to the access node address information included according to first packet, from convergence
It is preferential forwarding packet that first packet is identified in the forwarding rule list that unit is issued, and first packet is turned
Issuing the mode for converging unit is specially：
The access node address information that the filtering gateway is additionally operable to be included according to first packet, the end
The device type of end equipment and the terminal device upload the period of data, know in the forwarding rule list issued from convergence unit
It is preferential forwarding packet not go out first packet, and first packet is transmitted into the convergence unit.
As an alternative embodiment, in second aspect of the present invention, the filtering gateway is additionally operable to according to described
The access node address information, the device type of the terminal device and the terminal device that first packet includes are uploaded
It is preferential forwarding data that first packet is identified in the period of data, the forwarding rule list issued from convergence unit
Bag, first packet is transmitted into the mode for converging unit is specially：
The filtering gateway is additionally operable to find out the access included with first packet from the forwarding rule list
Node address information, the device type of the terminal device and the terminal device upload the target being associated the period of data
Forwarding priority, whether judge the target forwarding priority is the highest forwarding priority forwarded in rule list, if
It is that first packet is transmitted to the convergence unit.
As an alternative embodiment, in second aspect of the present invention, first packet also refers to including direction
Indicating is known；The filtering gateway is used for the access node address information included according to first packet, from money order
It is preferential forwarding packet that first packet is identified in the forwarding rule list that member is issued, and first packet is forwarded
It is specially to the mode for converging unit：
The filtering gateway is used for the access node address information included according to first packet, from money order
It is preferential forwarding packet that first packet is identified in the forwarding rule list that member is issued, and according to first data
The direction sign included, the convergence unit is transmitted to by first packet.
As an alternative embodiment, in second aspect of the present invention, second packet also refers to including direction
Indicating is known, and the filtering gateway is additionally operable to the access node address information included according to second packet, from described
It is preferential forwarding packet that second packet is identified in forwarding rule list, and second packet is transmitted into described connect
The mode of ingress is specially：
The filtering gateway is additionally operable to the access node address information included according to second packet, from described
It is preferential forwarding packet that second packet is identified in forwarding rule list, and included according to second packet
Direction sign, the access node is transmitted to by second packet.
Compared with prior art, the embodiment of the present invention has the advantages that：
In embodiments of the present invention, access node periodically sends the first packet, first packet to filtering gateway
First including access node address information and the first packet sends time point, and then filtering gateway is according to the first packet bag
It is preferential forwarding number that the first packet is identified in the access node address information included, the forwarding rule list issued from convergence unit
According to bag, the first packet is transmitted to convergence unit, convergence unit is received after the first packet, and sound is made to the first packet
Should, returning includes access node address information, the first transmission time point, the first reception time point of the first packet and the second number
Second packet at time point is sent according to the second of bag, the access node address that filtering gateway includes according to the second packet is believed
Breath, it is preferential forwarding packet to determine the second packet, and the second packet is transmitted into access node, finally, access node root
Time point, the first reception time point, the second transmission time point and the second reception time for receiving the second packet are sent according to first
Point, calculates the time bias value between access node and convergence unit, the time of its own is adjusted according to time bias value, so that
Time between synchronous access node and convergence unit, it is easy to convergence Single Component Management internet of things equipment (including access node, terminal
Equipment etc.).
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below by using required in embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is Internet of Things framework schematic diagram disclosed in some embodiments of the invention；
Fig. 2 is that the flow of synchronous Internet of Things access node and the method for money order elementary time disclosed in the embodiment of the present invention is shown
It is intended to；
Fig. 3 is another stream of synchronous Internet of Things access node and the method for money order elementary time disclosed in the embodiment of the present invention
Journey schematic diagram；
Fig. 4 is that the structure of synchronous Internet of Things access node and the system of money order elementary time disclosed in the embodiment of the present invention is shown
It is intended to.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, the scope of protection of the invention is belonged to.
It should be noted that the term " comprising " and " having " of the embodiment of the present invention and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing process, method, system, product or the equipment of series of steps or unit not
Be necessarily limited to those steps or the unit clearly listed, but may include not list clearly or for these processes, side
The intrinsic other steps of method, product or equipment or unit.
The embodiment of the invention discloses a kind of synchronous Internet of Things access node and the method for money order elementary time, for synchronization
Time between Internet of Things access node and convergence unit, it is easy to converge Single Component Management internet of things equipment, such as access node.This hair
The system that bright embodiment is correspondingly disclosed a kind of synchronous Internet of Things access node and money order elementary time.
Before technical solution of the present invention is introduced, Internet of Things framework disclosed in some embodiments of the invention is simply first introduced,
Fig. 1 is Internet of Things framework schematic diagram disclosed in some embodiments of the invention, it is necessary to which explanation, Fig. 1 is only some realities of the invention
Apply Internet of Things framework schematic diagram disclosed in example, it is other obtained schematic diagram is optimized or deformed on the basis of Fig. 1 to belong to
Protection scope of the present invention, no longer illustrates one by one herein.Internet of Things framework shown in Fig. 1, which is divided by function, can include terminal
Mechanical floor, access node layer and three layers of convergence-level.Wherein, terminal device layer can include the terminal device of magnanimity scale,
Such as hygrometer, smoke detector, ventilation equipment, rain sensor, irrigation valve etc.；Access node layer can include network connection
Substantial amounts of access node, access node can include the equipment such as router, repeater, access point, and the embodiment of the present invention is not limited
It is fixed；Access node can use the Networking protocol of any standard, and access node can be real between different network formats
Existing data parsing；Convergence-level can include filtering gateway and convergence unit, wherein, filtering gateway can pass through internet and access
Each access node of node layer directly or indirectly communicates connection (being not entirely shown in figure)；Converging unit can be by filtering
Gateway to access node layer each access node carry out top management so that realize data transmission frequencies, network topology and
The control of other networking functions；Convergence unit not only can be analyzed and be determined to the Internet of Things data that magnanimity terminal equipment is produced
Plan, information or configurating terminal device parameter can also be obtained by sending instructions, and (now the transmission of data is pointed to terminal and set
It is standby)；Convergence unit may be incorporated into miscellaneous service, from big data to social networks, even from social tool " thumb up " to weather
Share.In the Internet of Things framework shown in Fig. 1, each access node can be in its own wireless network coverage
Magnanimity terminal equipment provides Internet of Things data transmitting-receiving service, wherein, in each access node own wireless network coverage
Each terminal device can be built-in with wireless communication module, this allows each access node logical by wireless network
News mode is communicated wirelessly with each terminal device in own wireless network coverage.In the Internet of Things shown in Fig. 1
In framework, the wireless communication module built in terminal device can input frequency 470MHz, lower frequency 510MHz in production,
So communication frequency band can be defined as 470MHz~510MHz by wireless communication module automatically, to meet the rule of Chinese SRRC standards
It is fixed；Or, frequency 868MHz can also be inputted, lower frequency 908MHz, such wireless communication module can be automatically by communication frequency
Section is defined as 868MHz~908MHz, to meet the regulation of European etsi standard；Or, frequency 918MHz can be inputted, under
Communication frequency band can be defined as 918MHz~928MHz by frequency 928MHz, such wireless communication module automatically, to meet the U.S.
The regulation of FCC standards；Or, the communication frequency band of wireless communication module can also be defined as meeting Japanese ARIB standards or Canada
The regulation of IC standards, the embodiment of the present invention is not construed as limiting.In the Internet of Things framework shown in Fig. 1, terminal device can be using frequency
Divide multiplexing (Frequency Division Multiple Access, FDMA), frequency hopping (Frequency-Hopping Spread
Spectrum, FHSS), dynamic Time Division multiplexing (Dynamic Time Division Multiple Access, DTDMA), keep out of the way
Multiplexing (CSMA) method that is combined solves interference problem.
Based on the Internet of Things framework shown in Fig. 1, below in conjunction with specific embodiment, technical solution of the present invention is carried out detailed
Explanation.
Embodiment one
Referring to Fig. 2, Fig. 2 is synchronous Internet of Things access node disclosed in the embodiment of the present invention and the side of money order elementary time
The schematic flow sheet of method；As shown in Fig. 2 a kind of synchronous Internet of Things access node and the method for money order elementary time may include：
201st, access node periodically sends the first packet to filtering gateway, and first packet is with including access node
First transmission time point of location information and the first packet；
Wherein, some application places that access node address information can be where access node are corresponding physically
Location, such as be arranged on the access node in some parking lot, access node address information be the parking facility physical address.
Or, access node address information can also be the address for some the application places physical address for including its covering.
As an alternative embodiment, access node can select dedicated subcarriers channel from transmission band, so
The first packet is periodically sent to filtering gateway using dedicated subcarriers channel afterwards.
Further, access node can select dedicated subcarriers channel using frequency-hopping mode from transmission band, then
The first packet is periodically sent to filtering gateway using dedicated subcarriers channel.
For example, dedicated subcarriers channel can be selected with frequency-hopping mode between 100MHz~1GHz, be selected
A sub-carrier channels between 100MHz~1GHz are used as the dedicated subcarriers channel for sending the first packet.In addition, special
Sub-carrier channels can also select the preferable sub-carrier channels of channel quality to be used as dedicated subcarriers channel according to the quality of channel.
202nd, the access node address information that filtering gateway includes according to the first packet, the forwarding issued from convergence unit
It is preferential forwarding packet that the first packet is identified in rule list, and the first packet is transmitted into convergence unit；
Forwarding rule list includes the incidence relation of access node address information and forwarding priority, according to access node
Location information searching is to forwarding priority, if it is determined that it is the highest forwarding priority in forwarding rule list to go out the forwarding priority
When, that is, identify that the first packet is preferential forwarding packet, the first packet is transmitted to convergence unit.
As an alternative embodiment, in step 201, access node periodically sends first to filtering gateway and counted
Include according to bag：Access node periodically obtains the device type and terminal device of the terminal device in its wireless network coverage
Upload the period of data；Access node sends the first packet to filtering gateway, and the first packet includes setting for terminal device
Standby type, terminal device upload the first transmission time point of period, access node address information and the first packet of data.
In this embodiment, access node address information is identical with the address information of terminal device, or access node address information
Including the address information of terminal device.
And then, the access node address information that filtering gateway includes according to the first packet in step 202., from money order
It is preferential forwarding packet that the first packet is identified in the forwarding rule list that member is issued, and the first packet is transmitted into money order
Member includes：Access node address information, the device type of terminal device and terminal that filtering gateway includes according to the first packet
Equipment uploads the period of data, and it is preferential forwarding number that the first packet is identified in the forwarding rule list issued from convergence unit
According to bag, the first packet is transmitted to convergence unit.In this embodiment, access node address is included in forwarding rule list
Information, the device type of terminal device, terminal device upload the period of data and the incidence relation of forwarding priority, according to connecing
The period that ingress address information, the device type of terminal device, terminal device upload data finds target forwarding preferentially
Level, if it is determined that when going out the target forwarding priority for highest forwarding priority in forwarding rule list, that is, identify the
One packet is preferential forwarding packet, and the first packet is transmitted into convergence unit.
203rd, convergence unit receives the first packet, and returns to the second packet, and the second packet is with including access node
Location information, first send the second of time point, the first reception time point of the first packet and the second packet and send time point；
As an alternative embodiment, convergence unit can select dedicated subcarriers channel from transmission band, so
The second packet is returned to using dedicated subcarriers channel afterwards.
Further, convergence unit can select dedicated subcarriers channel using frequency-hopping mode from transmission band, then
Second packet is returned to using dedicated subcarriers channel.
For example, dedicated subcarriers channel can be selected with frequency-hopping mode between 100MHz~1GHz, be selected
A sub-carrier channels between 100MHz~1GHz are used as the dedicated subcarriers channel for sending the second packet.In addition, special
Sub-carrier channels can also select the preferable sub-carrier channels of channel quality to be used as dedicated subcarriers channel according to the quality of channel.
204th, the access node address information that filtering gateway includes according to the second packet, is identified from forwarding rule list
Second packet is preferential forwarding packet, and the second packet is transmitted into access node；
205th, access node receives the second packet, and time point, the first reception time point, the second transmission are sent according to first
Time point and the second reception time point for receiving the second packet, calculate the time bias between access node and convergence unit
Value, the time of itself is adjusted according to time bias value.
Under actual conditions, from access node to convergence unit, and convergence unit between access node to all existing
Network delay, but is due to that both network delays are two-way, it is 0, therefore, access node and money order to meet average value
Shown in time bias value equation below between member：
Access node and convergence unit between time bias value=【(first receives transmission time point at time point-the first)-
(second receives transmission time point at time point-the second)】/2；
Access node adjusts the time of itself according to time bias value so that the access node time is synchronous with convergence unit.
In embodiments of the present invention, also to converge the clock of unit as standard time clock, the clock of access node is used as clock to be adjusted.
First send time point, first receive time point, second send time point and second receive time point for (when, point,
Second) corresponding absolute time.
In embodiments of the present invention, access node periodically sends the first packet, first packet to filtering gateway
First including access node address information and the first packet sends time point, and then filtering gateway is according to the first packet bag
It is preferential forwarding number that the first packet is identified in the access node address information included, the forwarding rule list issued from convergence unit
According to bag, the first packet is transmitted to convergence unit, convergence unit is received after the first packet, and sound is made to the first packet
Should, returning includes access node address information, the first transmission time point, the first reception time point of the first packet and the second number
Second packet at time point is sent according to the second of bag, the access node address that filtering gateway includes according to the second packet is believed
Breath, it is preferential forwarding packet to determine the second packet, and the second packet is transmitted into access node, finally, access node root
Time point, the first reception time point, the second transmission time point and the second reception time for receiving the second packet are sent according to first
Point, calculates the time bias value between access node and convergence unit, the time of its own is adjusted according to time bias value, so that
Time between synchronous access node and convergence unit, it is easy to convergence Single Component Management internet of things equipment (including access node, terminal
Equipment etc.).
Embodiment two
Referring to Fig. 3, Fig. 3 is synchronous Internet of Things access node disclosed in the embodiment of the present invention and the side of money order elementary time
Another schematic flow sheet of method；As shown in figure 3, a kind of synchronous Internet of Things access node and the method for money order elementary time can be wrapped
Include：
301st, access node periodically sends the first packet to filtering gateway, and first packet is with including access node
First transmission time point of location information, direction sign and the first packet；
In this embodiment, the first packet also includes direction sign, direction sign be used to indicating this
The transmission direction of one packet, transmission direction includes access node-convergence unit, converges unit-access node, and the first data
Direction sign in bag is indicated for the transmission direction of the first packet from access node to convergence unit.
Wherein, direction sign uses the dedicated bit position in the first packet to represent, can simply indicate the
The transmission direction of one packet.
302nd, the access node address information that filtering gateway includes according to the first packet, the forwarding issued from convergence unit
Identify that the first packet forwards packet, and the direction indicateing arm included according to the first packet to be preferential in rule list
Know, the first packet is transmitted to convergence unit；
Filtering gateway read direction sign from the dedicated bit position of the first packet, knows according to direction sign
Do not go out the transmission direction of the first packet, then send the first packet.
As an alternative embodiment, the direction sign that filtering gateway includes according to the first packet, by
One packet is transmitted to before convergence unit, and filtering gateway judges whether the live load for converging unit exceedes predetermined threshold value, such as
Fruit is not less than predetermined threshold value (be equal to or less than predetermined threshold value), the direction sign included according to the first packet, by the
One packet is sent to convergence unit；If it exceeds predetermined threshold value, then wait the live load of convergence unit less than the default threshold
During value, the first packet is sent to convergence unit by the direction sign included according to the first packet.
Further, the direction sign that filtering gateway includes according to the first packet, the first packet is transmitted to
Converge before unit, filtering gateway receives the load instruction that convergence unit is sent, and filtering gateway is it is determined that load indicates to indicate
When the live load for converging unit exceedes threshold value, then when waiting the live load of convergence unit less than the threshold value, according to the first number
According to the direction sign included, the first packet is sent to convergence unit；Filtering gateway is it is determined that load indicates to show
When the live load of convergence unit is not less than threshold value (being equal to or less than threshold value), referred to according to the direction that the first packet includes
Indicating is known, and the first packet is sent into convergence unit.
In the above-described embodiment, filtering gateway monitors the live load of convergence unit in real time, can effectively control convergence
The live load of unit, it is to avoid because converge unit live load it is excessive when caused by loss of data or cause converge cellular system
Collapse.
303rd, convergence unit receives the first packet, and returns to the second packet, and the second packet is with including access node
Location information, direction sign, first send time point, the first of the first packet receive the of time point and the second packet
Two send time point；
Equally, the second packet also includes direction sign, and direction sign is used to indicate second packet
Transmission direction, and the direction sign in the second packet is indicated for the transmission direction of the second packet from money order
Member arrives access node.Wherein, direction sign uses the dedicated bit position in the second packet to represent, can simply indicate
Go out the transmission direction of the second packet.
304th, the access node address information that filtering gateway includes according to the second packet, is identified from forwarding rule list
Second packet forwards packet, and the direction sign included according to the second packet to be preferential, by the second packet
It is transmitted to access node；
Filtering gateway read direction sign from the dedicated bit position of the second packet, knows according to direction sign
Do not go out the transmission direction of the second packet, then send the second packet.
305th, access node receives the second packet, and time point, the first reception time point, the second transmission are sent according to first
Time point and the second reception time point for receiving the second packet, calculate the time bias between access node and convergence unit
Value, the time of itself is adjusted according to time bias value.
In embodiments of the present invention, access node periodically sends the first packet, first packet to filtering gateway
First including access node address information, direction sign and the first packet sends time point, then filtering gateway root
The first data are identified in the access node address information included according to the first packet, the forwarding rule list issued from convergence unit
Wrap and forward packet to be preferential, the first packet is transmitted to by convergence unit according to the direction sign of the first packet, converge
Poly- unit is received after the first packet, and the first packet is responded, and return includes access node address information, direction and indicated
Mark, first send the second of time point, the first reception time point of the first packet and the second packet and send time point
Second packet, the access node address information that filtering gateway includes according to the second packet, it is preferential to determine the second packet
Packet is forwarded, the second packet is transmitted to by access node according to the direction sign of the second packet, finally, access section
O'clock according to first send time point, first receive time point, second send time point and receive the second packet second receive
At time point, the time bias value between access node and convergence unit is calculated, the time of its own is adjusted according to time bias value,
So as to the time between synchronous access node and convergence unit, be easy to convergence Single Component Management internet of things equipment (including access node,
Terminal device etc.).
Embodiment three
Referring to Fig. 4, Fig. 4 is synchronous Internet of Things access node disclosed in the embodiment of the present invention and money order elementary time is
The structural representation of system；As shown in figure 4, a kind of synchronous Internet of Things access node and the system of money order elementary time may include：
Access node 410, sends the first packet, the first packet includes access for periodicity to filtering gateway 420
First transmission time point of node address information and the first packet；
Filtering gateway 420, for the access node address information included according to the first packet, under convergence unit 430
It is preferential forwarding packet that the first packet is identified in the forwarding rule list of hair, and the first packet is transmitted into convergence unit
430；
Unit 430 is converged, for receiving the first packet, and the second packet is returned to, the second packet includes access and saved
When dot address information, first send second transmission at time point, the first reception time point of the first packet and the second packet
Between point；
Filtering gateway 420 is additionally operable to, the access node address information included according to the second packet, from forwarding rule list
It is preferential forwarding packet to identify the second packet, and the second packet is transmitted into access node 410；
Access node 410 is additionally operable to, and receives the second packet, is sent time point according to first, first is received time point, the
Two transmission time points and receive the second packet second receive time point, calculate access node 410 with convergence unit 430 it
Between time bias value, the time of itself is adjusted according to time bias value.
As an alternative embodiment, access node 410 can select dedicated subcarriers channel from transmission band,
Then the first packet is periodically sent to filtering gateway using dedicated subcarriers channel.
Further, access node 410 can select dedicated subcarriers channel using frequency-hopping mode from transmission band, so
The first packet is periodically sent to filtering gateway 420 using dedicated subcarriers channel afterwards.
For example, dedicated subcarriers channel can be selected with frequency-hopping mode between 100MHz~1GHz, be selected
A sub-carrier channels between 100MHz~1GHz are used as the dedicated subcarriers channel for sending the first packet.In addition, special
Sub-carrier channels can also select the preferable sub-carrier channels of channel quality to be used as dedicated subcarriers channel according to the quality of channel.
Equally, convergence unit can select dedicated subcarriers channel from transmission band, then be believed using dedicated subcarriers
Road returns to the second packet.
Further, convergence unit 430 can select dedicated subcarriers channel using frequency-hopping mode from transmission band, so
The second packet is returned to using dedicated subcarriers channel afterwards.
For example, dedicated subcarriers channel can be selected with frequency-hopping mode between 100MHz~1GHz, be selected
A sub-carrier channels between 100MHz~1GHz are used as the dedicated subcarriers channel for sending the second packet.In addition, special
Sub-carrier channels can also select the preferable sub-carrier channels of channel quality to be used as dedicated subcarriers channel according to the quality of channel.
Under actual conditions, from access node 410 to convergence unit 430, and convergence unit 430 arrive access node
Network delay is all there is between 410, but is due to that both network delays are two-way, it is 0 to meet average value, therefore, is connect
Shown in time bias value equation below between ingress 410 and convergence unit 430：
Access node and convergence unit between time bias value=【(first receives transmission time point at time point-the first)-
(second receives transmission time point at time point-the second)】/2；
Access node 410 adjusts the time of itself according to time bias value so that the time of access node 410 and convergence unit
430 is synchronous.In embodiments of the present invention, standard time clock, the clock of access node 410 are also used as using the clock that converges unit 430
It is used as clock to be adjusted.
First send time point, first receive time point, second send time point and second receive time point for (when, point,
Second) corresponding absolute time.
As an alternative embodiment, access node 410 is used to periodically send the first data to filtering gateway 420
The mode of bag is specially：
Access node 410 is used for the device type for periodically obtaining the terminal device 440 in its wireless network coverage
The period of data is uploaded with terminal device 440；
Access node 410 is additionally operable to send the first packet to filtering gateway 420, and the first packet includes terminal device
440 device type, terminal device 440 upload the first of period, access node address information and the first packet of data
Send time point；
Filtering gateway 420 is additionally operable to the access node address information included according to the first packet, under convergence unit 430
It is preferential forwarding packet that the first packet is identified in the forwarding rule list of hair, and the first packet is transmitted into convergence unit
430 mode is specially：
Access node address information that filtering gateway 420 is additionally operable to be included according to the first packet, terminal device 440 are set
Standby type and terminal device 440 upload the period of data, and first is identified in the forwarding rule list issued from convergence unit 430
Packet is preferential forwarding packet, and the first packet is transmitted into convergence unit 430.
As an alternative embodiment, filtering gateway 420 is additionally operable to the access node included according to the first packet
Address information, the device type of terminal device 440 and terminal device 440 upload the period of data, are issued from convergence unit 430
Forwarding rule list in identify that the first packet is preferential forwarding packet, the first packet is transmitted to convergence unit 430
Mode be specially：
Filtering gateway 420 is additionally operable to find out the access node address letter included with the first packet from forwarding rule list
Breath, the device type of terminal device 440 and terminal device 440 upload the target forwarding priority being associated the period of data,
Whether be forward highest forwarding priority in rule list, if it is, the first packet is forwarded if judging target forwarding priority
Give convergence unit 430.
As an alternative embodiment, the first packet also includes direction sign；Filtering gateway 420 is used for root
First is identified in the access node address information included according to the first packet, the forwarding rule list issued from convergence unit 430
Packet is preferential forwarding packet, and the mode that the first packet is transmitted into convergence unit 430 is specially：
Filtering gateway 420 is used for the access node address information included according to the first packet, is issued from convergence unit 430
Forwarding rule list in identify that the first packet refers to for preferential forwarding packet, and the direction included according to the first packet
Indicating is known, and the first packet is transmitted into convergence unit 430.
Direction sign uses the dedicated bit position in the first packet to represent, can simply indicate the first data
The transmission direction of bag.The read direction sign from the dedicated bit position of the first packet of filtering gateway 420, refers to according to direction
Indicating identifies the transmission direction of the first packet, then sends the first packet.
As an alternative embodiment, the direction sign that filtering gateway 420 includes according to the first packet, will
First packet is transmitted to before convergence unit 430, and filtering gateway 420 judges whether the live load for converging unit 430 exceedes
Predetermined threshold value, if not less than predetermined threshold value (being equal to or less than predetermined threshold value), referred to according to the direction that the first packet includes
Indicating is known, and the first packet is sent into convergence unit 430；If it exceeds predetermined threshold value, then wait the work of convergence unit 430
When load is less than the predetermined threshold value, the first packet is sent to convergence by the direction sign included according to the first packet
Unit 430.
Further, the direction sign that filtering gateway 420 includes according to the first packet, the first packet is forwarded
To convergence unit 430 before, filtering gateway 420 receive convergence unit 430 send load indicate, filtering gateway 420 it is determined that
When load indicates that the live load for indicating money order member 430 exceedes threshold value, then the live load of convergence unit 430 is waited to be less than
During the threshold value, the first packet is sent to convergence unit 430 by the direction sign included according to the first packet；Filtering
Gateway 420 is it is determined that load indicates to indicate the live load of money order member 430 not less than threshold value (being equal to or less than threshold value)
When, the first packet is sent to convergence unit 430 by the direction sign included according to the first packet.
In the above-described embodiment, the live load of the monitoring convergence in real time of filtering gateway 420 unit 430, can effectively be controlled
The live load of system convergence unit 430, it is to avoid loss of data or caused caused by when the live load for converging unit 430 is excessive
Converge the system crash of unit 430.
As an alternative embodiment, the second packet also includes direction sign, filtering gateway 420 is additionally operable to
The access node address information included according to the second packet, it is preferential forwarding that the second packet is identified from forwarding rule list
Packet, the mode that the second packet is transmitted into access node 410 is specially：
Filtering gateway 420 is additionally operable to the access node address information included according to the second packet, from forwarding rule list
Identify that the second packet forwards packet, and the direction sign included according to the second packet to be preferential, by second
Packet is transmitted to access node 410.
Second packet also includes direction sign, and direction sign is used for the transmission for indicating second packet
Direction, and the direction sign in the second packet is indicated for the transmission direction of the second packet from convergence unit 430
To access node 410.Wherein, direction sign uses the dedicated bit position in the second packet to represent, can simply refer to
The transmission direction of second packet is shown.
By implementing the system shown in Fig. 4, access node 410 calculates its time bias value between convergence unit 430,
The time of its own is adjusted according to time bias value, so that the time between synchronous access node 410 and convergence unit 430, just
In the convergence management internet of things equipment of unit 430 (including access node 410, terminal device 440 etc.).
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
To instruct the hardware of correlation to complete by program, the program can be stored in a computer-readable recording medium, storage
Medium include read-only storage (Read-Only Memory, ROM), random access memory (Random Access Memory,
RAM), programmable read only memory (Programmable Read-only Memory, PROM), erasable programmable is read-only deposits
Reservoir (Erasable Programmable Read Only Memory, EPROM), disposable programmable read-only storage (One-
Time Programmable Read-Only Memory, OTPROM), the electronics formula of erasing can make carbon copies read-only storage
(Electrically-Erasable Programmable Read-Only Memory, EEPROM), read-only optical disc (Compact
Disc Read-Only Memory, CD-ROM) or other disk storages, magnetic disk storage, magnetic tape storage or can
For carrying or any other computer-readable medium of data storage.
Method above to a kind of synchronous Internet of Things access node disclosed in the embodiment of the present invention and money order elementary time and
System is described in detail, and specific case used herein is set forth to the principle and embodiment of the present invention, with
The explanation of upper embodiment is only intended to the method and its core concept for helping to understand the present invention；Simultaneously for the general of this area
Technical staff, according to the thought of the present invention, will change in specific embodiments and applications, in summary,
This specification content should not be construed as limiting the invention.
Claims (10)
1. a kind of synchronous Internet of Things access node and the method for money order elementary time, it is characterised in that including：
Access node periodically sends the first packet to filtering gateway, and first packet includes the access node address
First transmission time point of information and first packet；
The access node address information that the filtering gateway includes according to first packet, is issued from convergence unit
It is preferential forwarding packet that first packet is identified in forwarding rule list, and first packet is transmitted into the remittance
Poly- unit；
The convergence unit receives first packet, and returns to the second packet, and second packet includes described connect
Ingress address information, described first send time point, the first reception time point of first packet and second number
Time point is sent according to the second of bag；
The access node address information that the filtering gateway includes according to second packet, from the forwarding rule list
In identify that second packet is preferential forwarding packet, second packet is transmitted to the access node；
The access node receives second packet, and time point, the first reception time point, second are sent according to described first
Send time point and receive the second of second packet and receive time point, calculate the access node and the money order
Time bias value between member, the time of itself is adjusted according to the time bias value.
2. according to the method described in claim 1, it is characterised in that the access node periodically sends first to filtering gateway
Packet, including：
The access node periodically obtains the device type and the terminal of the terminal device in its wireless network coverage
Equipment uploads the period of data；
The access node sends the first packet to filtering gateway, and first packet includes the equipment of the terminal device
Type, the terminal device upload the first of period, the access node address information and first packet of data
Send time point；
The access node address information that the filtering gateway includes according to first packet, is issued from convergence unit
It is preferential forwarding packet that first packet is identified in forwarding rule list, and first packet is transmitted into the remittance
Poly- unit, including：
The access node address information that the filtering gateway includes according to first packet, the terminal device are set
Standby type and the terminal device upload the period of data, and described the is identified in the forwarding rule list issued from convergence unit
One packet is preferential forwarding packet, and first packet is transmitted into the convergence unit.
3. method according to claim 2, it is characterised in that the filtering gateway includes according to first packet
The access node address information, the device type of the terminal device and the terminal device upload the period of data, from
It is preferential forwarding packet that first packet is identified in the forwarding rule list that convergence unit is issued, by first data
Bag is transmitted to the convergence unit, including：
The filtering gateway finds out the access node address included with first packet from the forwarding rule list to be believed
The target forwarding that the period that breath, the device type of the terminal device and the terminal device upload data is associated is preferential
Level, whether be the highest forwarding priority that forwards in rule list, if it is, will be described if judging the target forwarding priority
First packet is transmitted to the convergence unit.
4. according to the method described in claim 1, it is characterised in that first packet also includes direction sign；Institute
The access node address information that filtering gateway includes according to first packet is stated, the forwarding rule issued from convergence unit
It is preferential forwarding packet that first packet is then identified in table, and first packet is transmitted into the convergence unit
Including：
The access node address information that the filtering gateway includes according to first packet, is issued from convergence unit
It is preferential forwarding packet that first packet is identified in forwarding rule list, and included according to first packet
Direction sign, the convergence unit is transmitted to by first packet.
5. according to the method described in claim 1, it is characterised in that second packet also includes direction sign, institute
The access node address information that filtering gateway includes according to second packet is stated, is recognized from the forwarding rule list
It is preferential forwarding packet to go out second packet, and second packet is transmitted into the access node, including：
The access node address information that the filtering gateway includes according to second packet, from the forwarding rule list
In identify that second packet is preferential forwarding packet, and the direction indicateing arm included according to second packet
Know, second packet is transmitted to the access node.
6. a kind of synchronous Internet of Things access node and the system of money order elementary time, it is characterised in that including：
Access node, sends the first packet, first packet includes the access section for periodicity to filtering gateway
First transmission time point of dot address information and first packet；
The filtering gateway, for the access node address information included according to first packet, from convergence unit
It is preferential forwarding packet that first packet is identified in the forwarding rule list issued, and first packet is transmitted to
The convergence unit；
The convergence unit, for receiving first packet, and returns to the second packet, second packet includes institute
Access node address information is stated, described first time point is sent, the first of first packet receives time point and described the
The second of two packets sends time point；
The filtering gateway is additionally operable to, the access node address information included according to second packet, from described turn
It is preferential forwarding packet that second packet is identified in hair rule list, and second packet is transmitted into the access
Node；
The access node is additionally operable to, and receives second packet, and time point, the first reception time are sent according to described first
Point, the second transmission time point and the second reception time point for receiving second packet, calculate the access node and institute
The time bias value between convergence unit is stated, the time of itself is adjusted according to the time bias value.
7. system according to claim 6, it is characterised in that the access node is used to periodically send to filtering gateway
The mode of first packet is specially：
The access node is used for the device type for periodically obtaining the terminal device in its wireless network coverage and described
Terminal device uploads the period of data；
The access node is additionally operable to send the first packet to filtering gateway, and first packet includes the terminal device
Device type, the terminal device upload data period, the access node address information and first packet
First send time point；
The filtering gateway is additionally operable to the access node address information included according to first packet, from convergence unit
It is preferential forwarding packet that first packet is identified in the forwarding rule list issued, and first packet is transmitted to
It is described convergence unit mode be specially：
The filtering gateway is additionally operable to be set according to the access node address information, the terminal that first packet includes
Standby device type and the terminal device upload the period of data, are identified in the forwarding rule list issued from convergence unit
First packet is preferential forwarding packet, and first packet is transmitted into the convergence unit.
8. system according to claim 7, it is characterised in that the filtering gateway is additionally operable to according to first packet
Including the access node address information, the device type of the terminal device and the terminal device upload time of data
Section, it is preferential forwarding packet that first packet is identified from the forwarding rule list that issues of convergence unit, by described the
One packet is transmitted to the mode for converging unit：
The filtering gateway is additionally operable to find out the access node included with first packet from the forwarding rule list
The target forwarding that the period that address information, the device type of the terminal device and the terminal device upload data is associated
Priority, whether be the highest forwarding priority that forwards in rule list, if it is, will if judging the target forwarding priority
First packet is transmitted to the convergence unit.
9. system according to claim 6, it is characterised in that first packet also includes direction sign；Institute
The access node address information that filtering gateway is used to include according to first packet is stated, from turning that convergence unit is issued
It is preferential forwarding packet that first packet is identified in hair rule list, and first packet is transmitted into the convergence
The mode of unit is specially：
The filtering gateway is used for the access node address information included according to first packet, under convergence unit
It is preferential forwarding packet that first packet is identified in the forwarding rule list of hair, and according to the first packet bag
The direction sign included, the convergence unit is transmitted to by first packet.
10. system according to claim 6, it is characterised in that second packet also includes direction sign, institute
The access node address information that filtering gateway is additionally operable to include according to second packet is stated, from the forwarding rule list
In identify that second packet is preferential forwarding packet, second packet is transmitted to the side of the access node
Formula is specially：
The filtering gateway is additionally operable to the access node address information included according to second packet, from the forwarding
Identify that second packet forwards packet, and the direction included according to second packet to be preferential in rule list
Sign, the access node is transmitted to by second packet.
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| CN201911320704.6A CN111130680B (en) | 2017-06-19 | 2017-06-19 | Method and system for synchronizing time of access node and aggregation unit of Internet of things |
| CN201710463235.8A CN107302575B (en) | 2017-06-19 | 2017-06-19 | Method and system for synchronizing time of access node and aggregation unit of Internet of things |
| PCT/CN2017/098640 WO2018232972A1 (en) | 2017-06-19 | 2017-08-23 | Method and system for time synchronization between access node and convergence unit in internet of things |
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| CN109150359A (en) * | 2018-09-30 | 2019-01-04 | 珠海格力电器股份有限公司 | A kind of method for synchronizing time and device of air-conditioner set |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107302575B (en) * | 2017-06-19 | 2020-02-18 | 深圳市盛路物联通讯技术有限公司 | Method and system for synchronizing time of access node and aggregation unit of Internet of things |
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| WO2018232972A1 (en) | 2018-12-27 |
| CN107302575B (en) | 2020-02-18 |
| CN111130680B (en) | 2022-04-22 |
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