CN107548103A - Data forwarding method and device - Google Patents
Data forwarding method and device Download PDFInfo
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- CN107548103A CN107548103A CN201710897324.3A CN201710897324A CN107548103A CN 107548103 A CN107548103 A CN 107548103A CN 201710897324 A CN201710897324 A CN 201710897324A CN 107548103 A CN107548103 A CN 107548103A
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- time slot
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- lora
- access time
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
This application provides data forwarding method and device.In this application, terminal works are in Class mode As, even if terminal has data to send demand, nor data transmission is carried out at random, but first Lora server-assignments are asked to access time slot, data transmission is carried out in the access time slot that Lora servers are this terminal distribution, this can prevent the problems such as irregular random progress data of terminal send caused conflict of eating dishes without rice or wine, the operating efficiency of Class mode As reduces.
Description
Technical field
The application is related to the network communications technology, more particularly to data forwarding method and device.
Background technology
The Class mode A requirements that low-power consumption wide area network (LoraWAN) mac-layer protocol (abbreviation LoraWAN agreements) defines
Each terminal has message can be just sent during transmission demand, response is not received by within the defined time and is then retransmitted and (retransmit
When need first to wait a random time), until send successfully.The advantages of Class mode As is to realize simple, saving power for terminal
Energy-conservation.
But when the number of terminal is more, under Class mode As, the message that multiple terminals are sent at random is being eated dishes without rice or wine
Conflict is easily caused, substantially reduces the operating efficiency of Class mode As.
The content of the invention
This application provides data forwarding method and device, to improve the operating efficiency of Class mode As.
The technical scheme that the application provides includes：
A kind of data forwarding method, this method are applied to the terminal that Class mode As are used in Lora networks, including：
Under Class mode As and when there are data to send demand, check this terminal whether with intercepting in this terminal works
To the Lora networks in the Lora gateway deadlines it is synchronous, when checking that this terminal is same not with the Lora gateway deadlines
During step, then,
Time synchronized is carried out with the Lora gateways, after this terminal is synchronous with the Lora gateways deadline, to institute
State Lora servers in Lora networks and send access time slot request；
Receive and record the access time slot that the Lora servers are this terminal distribution, institute is based in the access time slot
State data and send demand transmission business datum.
A kind of data forwarding method, this method are applied to the Lora servers in Lora networks, including：
Receiving terminal in the Lora networks under working in Class mode As and is having what data were sent when sending demand
Access time slot request；The slot length for accessing time slot request and carrying the terminal request；
What the access time slot and the access time slot request being allocated according to other-end in the Lora networks carried
Slot length is that the terminal distribution accesses time slot；
The terminal will be sent to for the access time slot of the terminal distribution, so that the terminal is in the access time slot
Demand, which is sent, based on data sends data.
A kind of data forwarding device, the device are applied to the terminal in Lora networks, including：
Inspection unit, under Class mode As and when thering are data to send demand, checking this terminal in this terminal works
It is whether synchronous with the Lora gateway deadlines in the Lora networks listened to；
Synchronization unit, for when the inspection result of the inspection unit is no, controlling the terminal and the Lora nets
Put row time synchronized into；
Slot unit, for after this terminal is synchronous with the Lora gateways deadline, into the Lora networks
Lora servers, which are sent, accesses time slot request；And when receiving and recording the access that the Lora servers are this terminal distribution
Gap；
Business unit, business datum is sent for sending demand based on the data in the access time slot.
A kind of data forwarding device, the device are applied to the Lora servers in Lora networks, including：
Receiving unit, for receiving the terminal in the Lora networks in the case where working in Class mode As and having data hair
Send the access time slot request sent during demand；The slot length for accessing time slot request and carrying the terminal request；
Allocation unit, for the access time slot being allocated according to other-end in the Lora networks and the access
The slot length that time slot request carries accesses time slot for the terminal distribution；
Transmitting element, for the terminal will to be sent to for the access time slot of the terminal distribution, so that the terminal exists
Demand is sent based on data send business datum in the access time slot.
As can be seen from the above technical solutions, in the application, terminal works are in Class mode As, even if terminal has number
Nor carrying out data transmission at random, but it is that terminal distribution accesses time slot by Lora servers, terminal exists according to the demand of transmission
Data transmission is carried out in the access time slot of Lora server-assignments.By terminal control in the access time slot of Lora server-assignments
Carry out data transmission, can prevent terminal it is irregular it is random carry out data send caused by conflict of eating dishes without rice or wine, Class mode As
The problems such as operating efficiency reduces.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the disclosure
Example, and be used to together with specification to explain the principle of the disclosure.
Fig. 1 is a kind of flow chart for data forwarding method that the application provides；
Fig. 2 is the flow chart for another data forwarding method that the application provides；
Fig. 3 is that the access time slot that the application provides updates flow chart；
Fig. 4 is that the access time slot that the application provides discharges flow chart；
Fig. 5 is a kind of structural representation for data forwarding device that the application provides；
Fig. 6 is another data forwarding device structural representation that the application provides.
Embodiment
In order to improve the operating efficiency of Class mode As, prevent from eating dishes without rice or wine to conflict under Class mode As, conventional one kind
Method is frequency division multiplexing (FDMA) method.
FDMA methods are specially：The chip that Lora gateways are worked simultaneously using more physical channels, different terminals are different
Still interacted on physical channel using Class mode As with Lora gateways.
FDMA methods can alleviate to a certain extent terminal number it is more when Class mode As eat dishes without rice or wine to conflict, certain
The operating efficiency of Class mode As can be improved in degree.
But FDMA methods simply eat dishes without rice or wine to conflict simply by the more physical channel resources of occupancy to alleviate.Due to
The maximum quantity for the physical channel that the chip of Lora gateways can be supported simultaneously is conditional, in this way, when in Lora networks
When terminal quantity becomes much larger, the poor efficiency of Class mode As, which still results in, eats dishes without rice or wine to conflict, especially the need to data transfer
Application larger, that data transmit-receive frequency is higher is asked, conflict is more very.
Also, FDMA methods can also increase cost, reason is：Supporting the price of the chip of more physical channels will be far longer than
Support the chip of single one physical channel.
Based on this, this application provides the data forwarding method different from FDMA methods.
The data forwarding method provided below the application is described：
Referring to Fig. 1, Fig. 1 is a kind of flow chart for data forwarding method that the application provides.This method is applied to Lora nets
Terminal in network.As shown in figure 1, this method includes：
Step 101, under Class mode As and when there are data to send demand, whether this terminal is checked in this terminal works
It is synchronous with the Lora gateway deadlines in the Lora networks listened to, when checking that this terminal is complete not with Lora gateways
During into time synchronized, then step 102 is performed.
Under existing Class mode As, if terminal there are data to send demand, data transmission is directly carried out.And in this Shen
Please in, terminal works under Class mode As, even if having data send demand, also not immediately carry out data transmission, but check
Whether this terminal is synchronous with the Lora gateway deadlines, and performing follow-up data according to inspection result sends, and specifically sees below
Description.
Step 102, time synchronized is carried out with the Lora gateways, it is synchronous with the Lora gateways deadline in this terminal
Afterwards, step 103 is performed.
LoraWAN agreements also define Class B-modes except defining Class mode As.Class B-modes are different from
Class mode As, Class B-modes are actively initiated data access for network side such as server etc. and designed, Class
B-mode is applicable following application：Device status inquiries, order configuration distributing etc. are applied, and have data to need actively for terminal itself
The scene of transmission be it is inapplicable, and Class mode As be then must etc. terminal to network side send data after, network side ability
Any communication is carried out with terminal node, this is entirely different with Class B-modes.
In Lora networks, the pattern of the Lora gateways of network side is Class B-modes, and all working is in Class B moulds
The Lora gateways of the working method of formula are equipped with gps clock, and the Lora gateways that different location is distributed in Lora networks all may be used
It is synchronous with the gps clock based on outfit.
Lora gateways under Class B-modes can externally send beacon (Beacon) message the cycle (every 128 seconds), and terminal
The Beacon messages that the transmission of Lora gateways is intercepted in time slot (Ping Slot) can be intercepted specifying, according to the Beacon listened to
Message carries out time synchronized with Lora gateways.
As one embodiment, terminal carries out time synchronized with Lora gateways to be included：
Step a1, the Beacon messages that the Lora gateways transmission is intercepted in time slot are intercepted specifying；
Step a2, the very first time stamp and this terminal carried according to the Beacon messages currently listen to the Beacon
Second timestamp of message and the Lora gateways time synchronized, the very first time are stabbed for representing the Beacon messages
Send the time.
In one example, the very first time stamp and this terminal carried according to the Beacon messages currently listens to described
Second timestamp of Beacon messages and the Lora gateways time synchronized are concretely：
Calculate very first time stamp and Beacon messages transmit to terminal from Lora gateways and estimate transmission time sum；Compare
Result of calculation and the second timestamp for currently listening to Beacon messages, if both errors are more than setting error, when will be local
Clock is adjusted to result of calculation.
Finally, the time of terminal and the time synchronized of Lora gateways.
Step 103, into the Lora networks, Lora servers send and access time slot request.
In this application, even if terminal has data to send demand, after terminal and Lora gateway time synchronizeds, terminal is still
Without data transfer, but sent under Class mode As to Lora servers and access time slot request, this is equivalent to improving
Class mode As.
After Lora servers receive the access time slot request of terminal distribution, it can be by performing stream as shown in Figure 2
Journey is that terminal distribution accesses time slot, will be sent to terminal for the access time slot of terminal distribution.Server has been detailed description below such as
What is that terminal distribution accesses time slot, wouldn't be repeated here.
When terminal, which receives, accesses time slot, then following step 104 is performed.
Step 104, receive and record the access time slot that Lora servers are this terminal distribution, the base in the access time slot
Demand, which is sent, in the data sends business datum.
In this application, after terminal receives the access time slot that Lora servers are this terminal distribution, terminal can base
Accessing transmission data in time slot in Class mode As and receiving data etc..That is, in this application, when terminal receives
After Lora servers is the access time slots of this terminal distribution, all data interactions of terminal can be carried out accessing in time slot, and
In non-access time slot, as one embodiment, terminal can enter resting state, to save electric energy.
So far, flow shown in Fig. 1 is completed.
It should be noted that in flow shown in Fig. 1, step 102 to step 104 be terminal check this terminal not with
Performed during Lora gateway deadline synchronizations, and work as and check that this terminal is synchronous with the Lora gateway deadlines, then terminal
Following steps can be continued executing with：
Step b1, checks whether this terminal local records the access time slot that Lora servers are this terminal distribution, if it is,
Step b2 is performed, if not, performing step b3.
Step b2, demand transmission data are sent based on the data in the access time slot of this terminal local record.
Step b3, into the Lora networks, Lora servers, which are sent, accesses time slot request, receives and records the Lora
Server is the access time slot of this terminal distribution, and sending demand based on the data in the access time slot sends data.
Step b3 repeats no more similar to above-mentioned step 103, step 104.
It can be seen that in this application by flow shown in Fig. 1, terminal works are in Class mode As, even if terminal has
Data send demand, nor carrying out data transmission at random, but first initiate to access time slot request to Lora servers, with request
Lora servers are that this terminal distribution accesses time slot, and afterwards, terminal carries out data in the access time slot of Lora server-assignments
Send.As can be seen that terminal control is carried out data transmission, Neng Goufang by the application in the access time slot of Lora server-assignments
The problems such as only irregular random conflict of eating dishes without rice or wine carried out caused by data transmission of terminal, the operating efficiency of Class mode As reduce.
It is described below to how Lora servers access time slot for terminal distribution：
Referring to Fig. 2, Fig. 2 is the flow chart for another data forwarding method that the application provides.This method is applied to Lora
Server, including：
Step 201, the terminal in the Lora networks is received when working in Class mode As and there are data to send demand
The access time slot request of transmission.
In one example, what terminal was sent accesses the slot length of carried terminal request distribution in time slot request, and being somebody's turn to do please
Ask the slot length of distribution specifically can send demand by the data of terminal to determine, such as, the data of terminal send demand and required eventually
Hold the data volume sent big, then asking the slot length of distribution can accordingly increase, and vice versa.
Step 202, what the access time slot and access time slot request being allocated according to other-end in Lora networks carried
Slot length is that the terminal distribution accesses time slot.
In one example, the Ping Slot methods of salary distribution that Lora servers refer to Class B-modes are terminal distribution
Access time slot.
As one embodiment, in this application, Lora servers be the access time slot of different terminals distribution be it is different,
For example all time slots to be allocated, according to number-mark, Lora servers are the time slot that the distribution numbering of terminal 1 is 1 to 10, for eventually
The time slot of the distribution of end 2 numbering 11 to 20.
It should be noted that in this application, Lora servers can also specify end except accessing time slot for terminal distribution
The physical channel (abbreviation working channel) of work is held, and is notified to terminal.It is this terminal that once terminal, which receives Lora servers,
After the working channel specified, then terminal will be sent based on data in the access time slot that Lora servers are this terminal distribution and be needed
Ask and data and/or reception data are sent on appointed working channel.Wherein, Lora servers are terminal assigned work channel
Mode as far as possible according to making full use of the principle of channel resource to perform, to improve the utilization rate of channel resource.
Step 203, the terminal will be sent to for the access time slot of the terminal distribution, so that the terminal is in the visit
Ask that sending demand based on data in time slot sends business datum.
In one example, the access time slot for the terminal distribution is carried in access in time slot responses message and passed through
Lora gateways are sent to terminal.Here Lora gateways can be the Lora gateways nearest apart from client.
So far, flow shown in Fig. 2 is completed.
It can be seen that in this application by flow shown in Fig. 2, all terminals managed by the control of Lora server centereds
Time slot, working channel etc. are accessed, terminal control is subjected to data transmission, Neng Goufang in the access time slot of Lora server-assignments
The problems such as only irregular random conflict of eating dishes without rice or wine carried out caused by data transmission of terminal, the operating efficiency of Class mode As reduce.
The data access logic component of the terminal of different service types is totally different, and the frequency that the data of some terminals upload may
It is not high but single data volume is larger, and frequency that the data of some terminals upload is of a relatively high but the data volume of single compared with
It is small.For the of a relatively high terminal of data upload frequencies, when single data volume increases, its allocated access time slot may not
It is enough, it can be updated, referring specifically to the flow shown in Fig. 3.And for the relatively low terminal of data upload frequencies, it must not
The allocated access time slot is taken for a long time, can now be discharged, referring specifically to the flow shown in Fig. 4.
Referring to Fig. 3, Fig. 3 is the flow chart for accessing time slot renewal that the application provides.As shown in figure 3, the flow may include
Following steps：
Step 301, terminal is being accessed to the transmission access time slot renewal request of Lora servers in time slot, with described in request
The access time slot of this terminal of Lora server updates.
It should be noted that terminal is possible in access time slot to the time slot renewal request that Lora servers are sent here
It is that the allocated access time slot of terminal is not enough to access time slot, it is necessary to increase and send；It could also be possible that terminal is allocated
Access time slot to use enough, it is desirable to reduce access time slot and send, the application does not limit specifically, is uniformly summarized as time slot more
Newly.
Step 302, when Lora servers receive the access time slot renewal request that the terminal is sent, renewal has been described
The access time slot of terminal distribution, the access time slot after renewal is sent to the terminal.
As one embodiment, access time slot renewal and ask portable data transmission frequency, based on this, this step 302
It has been the terminal distribution that middle Lora servers can ask portable data transmission frequency renewal according to time slot renewal is accessed
Access time slot.
Finally, terminal renewal can be achieved by step 301 and step 302 and accesses time slot.
Referring to Fig. 4, Fig. 4 is that the access time slot that the application provides discharges flow chart.As shown in figure 4, the flow may include with
Lower step：
Step 401, each terminal of Lora monitoring servers, when monitor terminal more than setting time be not carried out data send behaviour
Make, then sent to the terminal and access time slot release message.
In one example, data send operation and included：Send and access time slot request, time slot renewal request, send business
It is at least one in data.
As described above, terminal enters resting state in the non-access time slot after the access time slot of local record, for
The relatively low terminal of data upload frequencies, it is long possibly into the time of resting state, when terminal enters resting state, terminal
It is not carried out data and sends (for example send and access time slot request, access time slot renewal request, business datum etc.) operation, in this way,
Lora servers would not receive terminal transmission data (such as access time slot request, access time slot renewal request, business datum
Deng), when Lora monitoring servers to terminal exceed setting time do not receive terminal transmission data (such as access time slot request,
Access time slot renewal request, business datum etc.), then it is assumed that terminal is not carried out data more than setting time and sends operation, now such as
Step 401 describes, and Lora servers send to terminal and access time slot release message.
Step 402, when terminal receives the access time slot release message that the Lora servers return, local record is deleted
Access time slot.
Now terminal can release with accessing the binding relationship of time slot, that is, mean to access the release of time slot, Lora services
Device, which can distribute to the access time slot of the release other, the terminal for accessing time slot request, ensure that the efficient profit of time interval resource
With.When the terminal of the follow-up access time slot for deleting local record has data sending request again, it can be held according to flow shown in Fig. 1
OK.
So far, flow shown in Fig. 4 is completed.
The method provided above the application is described.The device provided below the application is described：
Fig. 5 is participated in, Fig. 5 is a kind of structure chart for data forwarding device that the application provides.The device is applied to Lora nets
Terminal in network, including：
Inspection unit, under Class mode As and when thering are data to send demand, checking this terminal in this terminal works
It is whether synchronous with the Lora gateway deadlines in the Lora networks listened to；
Synchronization unit, for when the inspection result of the inspection unit is no, controlling the terminal and the Lora nets
Put row time synchronized into；
Slot unit, for after this terminal is synchronous with the Lora gateways deadline, into the Lora networks
Lora servers, which are sent, accesses time slot request；And when receiving and recording the access that the Lora servers are this terminal distribution
Gap；
Business unit, business datum is sent for sending demand based on the data in the access time slot.
As one embodiment, the slot unit is used to, when the inspection result of the inspection unit is is, check this
Whether terminal local records the access time slot that Lora servers are this terminal distribution, if inspection result is no, to the Lora
Lora servers, which are sent, in network accesses time slot request；When receiving and recording the access that the Lora servers are this terminal distribution
Gap；
The business unit, it is further used for, when the inspection result of the slot unit is is, in this terminal local remembering
Demand is sent based on the data send business datum in the access time slot of record.
As one embodiment, the slot unit is further being accessed in time slot to Lora servers transmission access
Time slot renewal request, to ask the access time slot of this terminal of the Lora server updates；And receive the Lora servers
Access time slot after the renewal of return, the access time slot of local record is updated to the access time slot after the renewal of the reception.
As one embodiment, the slot unit disappears in the access time slot release for receiving the Lora servers return
During breath, the access time slot of local record is deleted.
As one embodiment, it is the work that this terminal is specified that the slot unit, which further receives the Lora servers,
Channel；
Based on this, the business unit sends demand transmission business datum in access time slot based on the data to be included：
Business datum is sent on the working channel based on data transmission demand accessing in time slot.
As one embodiment, the business unit enters in the non-access time slot after the access time slot of local record
Resting state.
So far, the structure chart of Fig. 5 shown devices is completed.
Referring to Fig. 6, Fig. 6 is the structure chart for another data forwarding device that the application provides.The device is applied to Lora
Lora servers in network, including：
Receiving unit, for receiving the terminal in the Lora networks in the case where working in Class mode As and having data hair
Send the access time slot request sent during demand；The slot length of the terminal request is carried in the access time slot request；
Allocation unit, for the access time slot being allocated according to other-end in the Lora networks and the access
The slot length that time slot request carries accesses time slot for the terminal distribution；
Transmitting element, for the terminal will to be sent to for the access time slot of the terminal distribution, so that the terminal exists
Demand is sent based on data send data in the access time slot.
As one embodiment, the receiving unit further receives the visit that the terminal is sent in the access time slot
Ask time slot renewal request；
Further renewal has been the access time slot of the terminal distribution to the allocation unit；
Access time slot after renewal is further sent to the terminal by the transmitting element.
As one embodiment, in this application, the transmitting element is further when monitoring that the terminal exceedes setting
Time is not carried out data and sends operation, is sent to the terminal and accesses time slot release message so that the terminal deletion locally records
Access time slot, with touch make the allocation unit that the access time slot for distributing to the terminal originally is distributed into other-end, institute
Stating data transmission operation includes：Transmission accesses at least one in time slot request, access time slot renewal request, transmission business datum
It is individual.
So far, the structure description of Fig. 6 shown devices is completed.
The preferred embodiment of the application is the foregoing is only, not limiting the application, all essences in the application
God any modification, equivalent substitution and improvements done etc., should be included within the scope of the application protection with principle.
Claims (15)
- A kind of 1. data forwarding method, it is characterised in that this method is applied to the terminal in low-power consumption Lora networks, including：In this terminal works under the Class mode As and when there are data to send demand, check this terminal whether with listening to Lora gateway deadlines in the Lora networks are synchronous, when checking that this terminal is not synchronous with the Lora gateway deadlines When, then,Time synchronized is carried out with the Lora gateways, after this terminal is synchronous with the Lora gateways deadline, to described Lora servers, which are sent, in Lora networks accesses time slot request；Receive and record the access time slot that the Lora servers are this terminal distribution, the number is based in the access time slot Business datum is sent according to the demand of transmission.
- 2. according to the method for claim 1, it is characterised in that when checking that this terminal is completed with the Lora gateways Between it is synchronous when, this method further comprises：Check whether this terminal local records the access time slot that Lora servers are this terminal distribution,If it is, sending demand based on the data in the access time slot of this terminal local record sends business datum；If not, Lora servers send access time slot request into the Lora networks, receive and record the Lora services Device is the access time slot of this terminal distribution, and sending demand based on the data in the access time slot sends business datum.
- 3. according to the method for claim 1, it is characterised in that described to include with Lora gateways progress time synchronized：The beacon Beacon messages that the transmission of Lora gateways is intercepted in time slot are intercepted specifying；The very first time stamp and this terminal carried according to the Beacon messages currently listens to the second of the Beacon messages Timestamp and the Lora gateways time synchronized, the very first time stab the transmission time for representing the Beacon messages.
- 4. method according to claim 1 or 2, it is characterised in that this method further comprises：Time slot renewal request is accessed accessing to send to the Lora servers in time slot, to ask the Lora server updates The access time slot of this terminal；The access time slot after the renewal that the Lora servers return is received, the access time slot of local record is updated to the reception Renewal after access time slot.
- 5. method according to claim 1 or 2, it is characterised in that this method further comprises：Enter resting state in the non-access time slot after the access time slot of local record.
- 6. method according to claim 1 or 2, it is characterised in that this method further comprises：When receiving the access time slot release message that the Lora servers are sent, the access time slot of local record is deleted.
- 7. method according to claim 1 or 2, it is characterised in that this method further comprises：It is the working channel that this terminal is specified to receive the Lora servers；It is described to be included in access time slot based on data transmission demand transmission business datum：Business datum is sent on the working channel based on data transmission demand accessing in time slot.
- 8. a kind of data forwarding method, it is characterised in that this method is applied to the Lora servers in low-power consumption Lora networks, bag Include：The terminal in the Lora networks is received in the access sent under working in Class mode As and when having data transmission demand Time slot request；The slot length for accessing time slot request and carrying the terminal request；Time slot and the time slot for accessing time slot request and carrying are accessed according to what other-end in the Lora networks was allocated Length is that the terminal distribution accesses time slot；The terminal will be sent to for the access time slot of the terminal distribution, so that the terminal is based in the access time slot Data send demand and send business datum.
- 9. according to the method for claim 8, it is characterised in that this method further comprises：When receiving the access time slot renewal request that the terminal is sent in the access time slot, renewal has been the terminal The access time slot of distribution, the access time slot after renewal is sent to the terminal；When monitor the terminal more than setting time be not carried out data send operation, then to the terminal send access time slot release Message is put so that the access time slot of terminal deletion local record, and distributes to it by the access time slot for distributing to the terminal His terminal, the data, which send operation, to be included：Send and access time slot request, access time slot renewal request, send in business datum It is at least one.
- A kind of 10. data forwarding device, it is characterised in that the device is applied to the terminal in low-power consumption Lora networks, including：Inspection unit, under Class mode As and when thering are data to send demand, whether checking this terminal in this terminal works It is synchronous with the Lora gateway deadlines in the Lora networks listened to；Synchronization unit, for when the inspection result of the inspection unit is no, controlling the terminal to enter with the Lora gateways Row time synchronized；Slot unit, for after this terminal is synchronous with the Lora gateways deadline, Lora to take into the Lora networks Business device, which is sent, accesses time slot request；And receive and record the access time slot that the Lora servers are this terminal distribution；Business unit, business datum is sent for sending demand based on the data in the access time slot.
- 11. device according to claim 10, it is characterised in that the slot unit is used for the inspection in the inspection unit The fruit that comes to an end is when being, checks whether this terminal local records the access time slot that Lora servers are this terminal distribution, if checking knot Fruit is no, then into the Lora networks, Lora servers send and access time slot request；Receive and record the Lora servers For the access time slot of this terminal distribution；The business unit, it is further used for when the inspection result of the slot unit is is, in this terminal local record Access in time slot and send demand transmission business datum based on the data.
- 12. the device according to claim 10 or 11, it is characterised in thatThe slot unit is further being accessed to Lora servers transmission access time slot renewal request in time slot, with request The access time slot of this terminal of the Lora server updates；And receive the access after the renewal that the Lora servers return Time slot, the access time slot of local record is updated to the access time slot after the renewal of the reception；AndWhen receiving the access time slot release message that the Lora servers are sent, the access time slot of local record is deleted.
- 13. the device according to claim 10 or 11, it is characterised in that the slot unit further receives the Lora Server is the working channel that this terminal is specified；The business unit further sends demand based on the data in access time slot and sends industry on the working channel Business data.
- A kind of 14. data forwarding device, it is characterised in that the device is applied to the Lora servers in low-power consumption Lora networks, Including：Receiving unit, needed for receiving the terminal in the Lora networks in the case where working in Class mode As and there are data to send The access time slot request sent when asking；The slot length for accessing time slot request and carrying the terminal request；Allocation unit, for the access time slot being allocated according to other-end in the Lora networks and the access time slot The slot length that request carries accesses time slot for the terminal distribution；Transmitting element, for the terminal will to be sent to for the access time slot of the terminal distribution, so that the terminal is described Access in time slot and send demand transmission business datum based on data.
- 15. device according to claim 14, it is characterised in that the receiving unit further receives the terminal in institute State the access time slot renewal request for accessing and being sent in time slot；Further renewal has been the access time slot of the terminal distribution to the allocation unit；Access time slot after renewal is further sent to the terminal by the transmitting element；AndWhen monitor the terminal more than setting time be not carried out data send operation, to the terminal send access time slot release Message makes the allocation unit to distribute to the terminal originally so that the access time slot of terminal deletion local record to touch Access time slot distribute to other-end, the data, which send operation, to be included：Send and access time slot request, access time slot renewal is asked Ask, send it is at least one in business datum.
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