CN110519856A - The data transmission method and terminal of a kind of NB-IoT and base station - Google Patents
The data transmission method and terminal of a kind of NB-IoT and base station Download PDFInfo
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- CN110519856A CN110519856A CN201810487139.1A CN201810487139A CN110519856A CN 110519856 A CN110519856 A CN 110519856A CN 201810487139 A CN201810487139 A CN 201810487139A CN 110519856 A CN110519856 A CN 110519856A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 170
- 238000000034 method Methods 0.000 title claims abstract description 58
- 230000004044 response Effects 0.000 claims abstract description 88
- 239000013256 coordination polymer Substances 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 7
- 230000011664 signaling Effects 0.000 abstract description 19
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 238000013507 mapping Methods 0.000 description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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Abstract
The embodiment of the present invention provides data transmission method and terminal and the base station of a kind of NB-IoT.The method includes obtaining data to be transferred；If data to be transferred is not more than data threshold, random access request is sent to base station, including the randomly selected lead code from the lead code set prestored, so that random access response is replied in base station, information and transmission mark including radio resource, transmission mark are corresponded with lead code；Data packet is sent to base station using the radio resource, including the data to be transferred and transmission mark, so that response package is replied after successful data reception packet in base station, the embodiment of the present invention is when determining that data to be transferred is not more than the data threshold prestored, terminal sends random access request to base station, base station identifies corresponding transmission, radio resource is included in random access response and is sent to terminal, to make terminal that data to be transferred be sent base station using the radio resource, to save a large amount of signaling consumption, the service efficiency of radio resource is improved.
Description
Technical field
The present embodiments relate to the data transmission methods and end of wireless communication technique field more particularly to a kind of NB-IoT
End and base station.
Background technique
LTE/EPC is given in the introducing of narrowband Internet of Things (Narrow Band Internet of Things, NB-IoT) technology
Network brings very big improvement requirement.The design of traditional LTE network is primarily to adapt to the need of broadband mobile internet
It asks, as user provides high bandwidth, the online experience of high response speed.But NB-IoT but has significant difference: 1. terminals
It is large number of；2. terminal power conservation requirement is high, it is high that existing LTE signaling process may cause terminal energy consumption；3. based on small pack receiving and transmitting,
This may cause network signaling overhead and transmits size itself greater than data load.
In order to be adapted to, NB-IoT terminal data transmitting-receiving frequency is low, data packet is smaller and most cases are the transmission unidirectionally sent
Characteristic, 3GPP protocol definition a kind of transmission plan of optimization, referred to as control plane (Control Plane, CP) scheme, that is,
The Data Over NAS often said.The program realizes data packet between terminal and MME by Non-Access Stratum (Non-Access
Stratrum, NAS) message transmission, it is passed between MME and S-GW by S11-U oral instructions, upper and lower line number is transmitted through in journey without frequent
The radio access bearer (Evolved Radio Access Bearer, E-RAB) of evolution is established, to promote number transfer efficiency, is saved
Save unnecessary signaling overheads.The specific signaling process of CP scheme are as follows: 1. terminals are normally carried out random access；2.UE transmission is taken
Band establishes the wireless resource control connection request RRC connection request message of reason to base station eNodeB；
3.eNodeB is that terminal UE establishes context, and eNodeB carries out the access and resource allocation of Signaling Radio Bearer SRB1 resource；
4.eNodeB replys wireless heterogeneous networks connection to UE and establishes RRC connection setup message, carries in message
The details of SRB1bis resource distribution.5.UE believes according to the SRB1bis resource that RRC connection setup message indicates
Breath carries out radio-resource-configuration, then sends wireless heterogeneous networks connection foundation and completes RRC connection setup
Complete message carries NB data packet by the NAS cell in signaling；6. after network side completes data receiver, notifying terminal
Free context.
In existing CP transmission plan, about 12 bit of RRC connection request message, RRC connection setup complete message (is not wrapped
Include small data packets) about 14 bits, RRC signaling expense is smaller.But NB-IoT system, there are retransmission mechanism, RRC information can
Duplicate maximum times are 128 times, and a cell can at most dispose 5*104 equipment, can not thus ignore RRC letter
The radio resource for enabling expense occupy.Therefore the depth covering scene of great amount of terminals and the edge of cell are being deployed, existed a large amount of
Signaling consumption, cause radio resource insufficient.
Summary of the invention
The embodiment of the present invention provides data transmission method and terminal and the base station of a kind of NB-IoT, to solve the prior art
The depth covering scene of great amount of terminals and the edge of cell are being deployed, there are the consumption of a large amount of signaling, lead to radio resource not
Foot.
In a first aspect, the embodiment of the invention provides the data transmission methods of NB-IoT a kind of, comprising:
Obtain data to be transferred；
If the data to be transferred is not more than the data threshold prestored, random access request is sent to base station, it is described random
Access request includes at least the randomly selected lead code from the lead code set prestored, so that random access is replied in the base station
Response, the random access response include at least the information and transmission mark of radio resource, the transmission identify with it is described leading
Code corresponds；
Using the radio resource to the base station send data packet, the data packet include at least the data to be transferred and
Transmission mark, so that response package is replied after being properly received the data packet in the base station.
Second aspect, the embodiment of the invention provides the data transmission methods of NB-IoT a kind of, comprising:
It receives and is asked by the random access that terminal is sent when determining that the data to be transferred obtained is not more than the data threshold prestored
It asks, the random access request includes at least the terminal randomly selected lead code from the lead code set prestored；
Random access response is sent, the random access response includes at least the information and transmission mark of radio resource, institute
It states transmission mark to correspond with the lead code, so that the terminal replys data packet, the number using the radio resource
The data to be transferred and transmission mark are included at least according to packet；
If it is determined that being properly received the data packet, then response package is sent to the terminal.
The third aspect, the embodiment of the invention provides a kind of terminals that the data for NB-IoT are transmitted, comprising:
Obtain module, for obtaining data to be transferred；
If random access module is not more than the data threshold prestored for the data to be transferred, sent to base station random
Access request, the random access request includes at least the randomly selected lead code from the lead code set prestored, so that institute
It states base station and replys random access response, the random access response includes at least the information and transmission mark of radio resource, described
Transmission mark is corresponded with the lead code；
Data transmission blocks send data packet to the base station using the radio resource, and the data packet includes at least
The data to be transferred and transmission mark, so that response package is replied after being properly received the data packet in the base station.
Fourth aspect, the embodiment of the invention also provides a kind of base stations that the data for NB-IoT are transmitted, comprising:
Receiving module, for receive by terminal determine obtain data to be transferred be not more than prestore data threshold when transmission
Random access request, the random access request include at least the terminal it is randomly selected from the lead code set prestored
Lead code；
Sending module, for sending random access response, the random access response includes at least the information of radio resource
It is identified with transmission, the transmission mark is corresponded with the lead code, so that the terminal is replied using the radio resource
Data packet, the data packet include at least the data to be transferred and transmission mark；
The sending module is also used to if it is determined that being properly received the data packet, then to terminal transmission data packet sound
It answers.
5th aspect, the embodiment of the invention also provides a kind of electronic equipment, comprising:
Processor, memory, communication interface and bus；Wherein,
The processor, memory, communication interface complete mutual communication by the bus；
The communication interface is for the information transmission between the communication equipment of the electronic equipment；
The memory is stored with the program instruction that can be executed by the processor, and the processor calls described program to refer to
Order is able to carry out following method:
Obtain data to be transferred；
If the data to be transferred is not more than the data threshold prestored, random access request is sent to base station, it is described random
Access request includes at least the randomly selected lead code from the lead code set prestored, so that random access is replied in the base station
Response, the random access response include at least the information and transmission mark of radio resource, the transmission identify with it is described leading
Code corresponds；
Using the radio resource to the base station send data packet, the data packet include at least the data to be transferred and
Transmission mark, so that response package is replied after being properly received the data packet in the base station.
6th aspect, the embodiment of the invention also provides a kind of storage mediums, are stored thereon with computer program, the calculating
Machine program realizes following method when being executed by processor:
Obtain data to be transferred；
If the data to be transferred is not more than the data threshold prestored, random access request is sent to base station, it is described random
Access request includes at least the randomly selected lead code from the lead code set prestored, so that random access is replied in the base station
Response, the random access response include at least the information and transmission mark of radio resource, the transmission identify with it is described leading
Code corresponds；
Using the radio resource to the base station send data packet, the data packet include at least the data to be transferred and
Transmission mark, so that response package is replied after being properly received the data packet in the base station.
The data transmission method and terminal of NB-IoT provided in an embodiment of the present invention and base station are determining that data to be transferred is little
When the data threshold prestored, terminal to base station send comprising from the lead code set prestored randomly selected lead code with
Machine access request, base station obtain unique corresponding transmission according to the lead code and identify, be included in together with radio resource and connect at random
Enter in response and is sent to terminal, thus enable the terminals to that data to be transferred is sent to the base station using the radio resource, thus
A large amount of signaling consumption is saved, the service efficiency of radio resource is improved.
Detailed description of the invention
Fig. 1 is the data transmission method flow chart of the NB-IoT of the embodiment of the present invention；
Fig. 2 is the data transmission method flow chart of another NB-IoT of the embodiment of the present invention；
Fig. 3 is the data transmission method flow chart of the another NB-IoT of the embodiment of the present invention；
Fig. 4 is the terminal structure schematic diagram that the data for NB-IoT of the embodiment of the present invention are transmitted；
Fig. 5 is the architecture of base station schematic diagram that the data for NB-IoT of the embodiment of the present invention are transmitted；
Fig. 6 is the electronic devices structure schematic diagram of the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fig. 1 is the data transmission method flow chart of the NB-IoT of the embodiment of the present invention, as shown in Figure 1, which comprises
Step S01, data to be transferred is obtained.
In traditional CP transmission plan, terminal needs first to carry out random access operation: being sent out from terminal to base station eNodeB
Random access request is sent, then random access response is replied by base station.Then data to be transferred is sent from RRC Establishing process to base station again
Data volume size and terminal recognition ID.And after completing the random access operation, terminal can not directly transmit data
Packet.This is because base station can not judge that the terminal is passed by the random access request that terminal is sent before carrying out RRC Establishing process
Defeated data need how many radio resource.In addition, if when multiple terminals send data packet to same radio resource, due to lacking
Terminal recognition ID, this competition can not also solve.For this purpose, the embodiment of the present invention use it is a kind of only for small data packets send
Small data transmission (Small Transmission, ST) scheme.
Terminal first obtains the data to be transferred for needing to send.
If step S02, the described data to be transferred is not more than the data threshold prestored, random access request is sent to base station,
The random access request includes at least the randomly selected lead code from the lead code set prestored, so that the base station is replied
Random access response, the random access response include at least the information and transmission mark of radio resource, transmission mark and
The lead code corresponds.
Since ST transmission plan is only applied to small data transmission, so needing the data volume to the data to be transferred of the terminal
It is defined, if the data volume of the data to be transferred is greater than the data threshold ST MAX prestored, determines that the terminal can not use
ST transmission plan, and continue to execute CP transmission plan.
And if the data volume is less than or equal to the data threshold, determines that the terminal can execute ST transmission plan.This
When, the terminal will send random access request to base station, wherein the lead code RA Preamble of the random access request by
Terminal is randomly choosed from the lead code set ST RA Group prestored and is obtained.
Base station can extract lead code therein after receiving the random access request, according to preset mapping ruler,
It obtains transmitting mark ST ID correspondingly with the lead code.Meanwhile it can be used for transmitting to the terminal distribution described to be passed
The radio resource of data, wherein the size of the radio resource is identical as the data threshold, and the number with the data to be transferred
It is unrelated according to measuring.Then, the information of the radio resource and transmission mark are included in accidental access response message and are sent by base station
To the terminal.
Step S03, send data packet to the base station using the radio resource, the data packet include at least it is described to
Data and transmission mark are passed, so that response package is replied after being properly received the data packet in the base station.
In executing ST transmission plan process, after terminal receives random access response, wireless money therein is extracted
The information and transmission mark in source.It is leading in the random access request that the terminal first sends the transmission mark with the terminal
Code is compared, if it is determined that transmission mark is corresponding with the lead code, then can mark the data to be transferred and transmission
Know deposit data packet, the data packet is sent to base station using the radio resource.
Base station will send response package after being properly received the data packet to the terminal, in response package
Including at least transmission mark and response message ACK.
Whether the terminal can identify base station after receiving the response package, by comparing transmission mark
It is properly received the data packet.
The embodiment of the present invention determine data to be transferred be not more than prestore data threshold when, terminal to base station send comprising from
The random access request of randomly selected lead code, base station are uniquely corresponded to according to the lead code in the lead code set prestored
Transmission mark, be included in random access response together with radio resource and be sent to terminal, to enable the terminals to use this
Data to be transferred is sent to the base station by radio resource, to save a large amount of signaling consumption, improves making for radio resource
Use efficiency.
Fig. 2 is the data transmission method flow chart of another NB-IoT of the embodiment of the present invention, after the step S01,
The method also includes:
Step S011, covering grade is obtained.
Terminal also needs to obtain the covering grade of the terminal, and the terminal is presently in network according to the covering grade
Superiority and inferiority situation or the terminal average repeat time that needs when sending data to be transferred, obtained according to preset standards of grading
's.Specific scoring process, which can be by base station, to be realized, can also be by terminal according to itself Reference Signal Received Power
(Reference Signal Receiving Power, the RSRP) and system information block (System sent by base station
Information Blocks, SIB) each threshold value in message determines, such as the covering grade can be divided into 0,1
With 2, wherein the network state that the covering grade is 0 is optimal, required average repeat time is not more than 4 times, and covers
The network state of grade 1 and 2 is then relatively poor.The judgement of covering grade can be set according to the actual needs,
But for simplicity, in the following embodiments all only with above-mentioned covering grade be 0,1 or 2 for be illustrated
If step S012, the described covering grade is unsatisfactory for preset grade threshold range, CP transmission plan is executed.
If the terminal is in preferably network state relatively, relatively small number of average repeat time is needed, then can be recognized
Excessive signaling consumption can't be generated for the terminal, even if similarly can satisfy existing wireless using CP transmission plan
Resource.So terminal can execute ST transmission plan when the covering grade meets preset grade threshold range；Otherwise,
The terminal continues to execute CP transmission plan, for example, the grade threshold range is then to determine that the covering grade is 0 greater than 0
Terminal continues to execute CP transmission plan, and the terminal that the covering grade is 1,2 can execute ST transmission plan.
It follows that the data volume and if only if the data to be transferred of the terminal is less than or equal to data threshold, and covering etc.
When grade meets grade threshold range, ST transmission plan is just executed；Otherwise, which continues to execute CP transmission plan.
No matter the step S01 and S011 successively, also may be performed simultaneously in actual implementation procedure；And the step
No matter S012 and step S02 also successively, may be performed simultaneously；In embodiments of the present invention only with the step S01 in step
Before S011, and the step S012 before step S02 for be illustrated.
After determining that data to be transferred and covering grade meet preset condition, terminal is sent to base station includes the embodiment of the present invention
The random access request of randomly selected lead code from the lead code set prestored, it is unique right that base station is obtained according to the lead code
Answer transmission mark, be included in random access response together with radio resource and be sent to terminal, thus enable the terminals to using
Data to be transferred is sent to the base station by the radio resource, to save a large amount of signaling consumption, improves radio resource
Service efficiency.
Based on the above embodiment, further, the method also includes:
The small data transmission information sent by base station is received, the small data transmission information includes at least the data threshold
With lead code set.
The data threshold and lead code set that base station described in above-described embodiment prestores can pass through SIB message by base station
All terminals are broadcast to, the ST transmission plan to all terminal broadcast base stations is equivalent to.Certainly, the grade threshold model
Enclosing also may be embodied in the SIB message.In this way, the base station can according to current service condition and transmission environment,
ST transmission plan is adapted to by the variation to data threshold, lead code set and grade threshold range in SIB message
The adjustment of property.
After determining that data to be transferred and covering grade meet preset condition, terminal is sent to base station includes the embodiment of the present invention
The random access request of randomly selected lead code from the lead code set prestored, it is unique right that base station is obtained according to the lead code
Answer transmission mark, be included in random access response together with radio resource and be sent to terminal, thus enable the terminals to using
Data to be transferred is sent to the base station by the radio resource, to save a large amount of signaling consumption, improves radio resource
Service efficiency.
Based on the above embodiment, further, the method also includes:
If it is determined that the lead code of transmission mark and the random access request sent in the random access response received is not
It is corresponding, then it is counted in distinct count device, and after the one random time of waiting, retransmit the random access request.
In order to improve the reliability of ST transmission plan, the ST transmission plan is provided with retransmission mechanism.If multiple terminals
Random access is sent at same Physical Random Access Channel (Physical Random Access Channel, NPRACH) to ask
It asks, then conflicting inevitably to occur.Since random access procedure can not carry out conflict inspection, for raising efficiency, at end
One distinct count device of end setting.
When terminal receives and sends random access response by base station, if realizing transmission mark and previously hair included in it
The lead code in random access request sent does not correspond to, then can assert the collision event of generation.At this point, opening the different meter
Number device adds 1 if having been switched on distinct count device.Then after waiting one section of random time, again to base station send with
Machine access request.Until including the random access response of corresponding transmission mark until receiving, and close the distinct count device.
Further, the method also includes:
If the value of the distinct count device is greater than preset retransmission threshold value, the distinct count device is closed, and execute CP
Transmission plan.
After distinct count device unlatching, the value to the distinct count device is needed to be monitored.If the different meter
The value of number devices has been more than preset retransmission threshold value, such as 5, then determines that the terminal can not execute ST transmission plan, then execute CP
Transmission plan simultaneously closes off the distinct count device.
After determining that data to be transferred and covering grade meet preset condition, terminal is sent to base station includes the embodiment of the present invention
The random access request of randomly selected lead code from the lead code set prestored, it is unique right that base station is obtained according to the lead code
Answer transmission mark, be included in random access response together with radio resource and be sent to terminal, thus enable the terminals to using
Data to be transferred is sent to the base station by the radio resource, to save a large amount of signaling consumption, improves radio resource
Service efficiency.
Fig. 3 is the data transmission method flow chart of the another NB-IoT of the embodiment of the present invention, as shown in figure 3, the method
Include:
Step S10, receive by terminal determine obtain data to be transferred be not more than prestore data threshold when send with
Machine access request, it is randomly selected leading from the lead code set prestored that the random access request includes at least the terminal
Code.
Terminal needs the data volume to the data to be transferred to be defined after obtaining the data to be transferred for needing to send, if
The data volume of the data to be transferred is greater than the data threshold ST MAX prestored, then determines that the terminal can not use ST transmission plan,
And continue to execute CP transmission plan.
And if the data volume is less than or equal to the data threshold, determines that the terminal can execute ST transmission plan.This
When, the base station can receive and send random access request by terminal, wherein the lead code RA of the random access request
Preamble is randomly choosed from the lead code set ST RA Group prestored by terminal and is obtained.
Step S11, random access response is sent, the random access response includes at least the information and transmission of radio resource
Mark, the transmission mark is corresponded with the lead code, so that the terminal replys data packet using the radio resource,
The data packet includes at least the data to be transferred and transmission mark.
Base station can extract lead code therein after receiving the random access request, according to preset mapping ruler,
It obtains transmitting mark ST ID correspondingly with the lead code.Meanwhile it can be used for transmitting to the terminal distribution described to be passed
The radio resource of data, wherein the size of the radio resource is identical as the data threshold, and the number with the data to be transferred
It is unrelated according to measuring.Then, the information of the radio resource and transmission mark are included in accidental access response message and are sent by base station
To the terminal.
In executing ST transmission plan process, after terminal receives random access response, wireless money therein is extracted
The information and transmission mark in source.It is leading in the random access request that the terminal first sends the transmission mark with the terminal
Code is compared, if it is determined that transmission mark is corresponding with the lead code, then can mark the data to be transferred and transmission
Know deposit data packet, the data packet is sent to base station using the radio resource.
Step S12, if it is determined that being properly received the data packet, then response package is sent to the terminal.
Base station will send response package after being properly received the data packet to the terminal, in response package
Including at least transmission mark and response message ACK.
Whether the terminal can identify base station after receiving the response package, by comparing transmission mark
It is properly received the data packet.
After determining that data to be transferred and covering grade meet preset condition, terminal is sent to base station includes the embodiment of the present invention
The random access request of randomly selected lead code from the lead code set prestored, it is unique right that base station is obtained according to the lead code
Answer transmission mark, be included in random access response together with radio resource and be sent to terminal, thus enable the terminals to using
Data to be transferred is sent to the base station by the radio resource, to save a large amount of signaling consumption, improves radio resource
Service efficiency.
Fig. 4 is the terminal structure schematic diagram that the data for NB-IoT of the embodiment of the present invention are transmitted, as shown in figure 4, institute
Stating terminal includes: to obtain module 10, random access module 11 and data transmission blocks 12, wherein
The acquisition module 10 is for obtaining data to be transferred；If the random access module 11 is used for the data to be transferred not
Greater than the data threshold prestored, then random access request is sent to base station, the random access request is included at least from prestoring
Randomly selected lead code in lead code set, so that random access response is replied in the base station, the random access response is extremely
Information including radio resource and transmission mark less, the transmission mark are corresponded with the lead code；The data are sent
Module 12 sends data packet to the base station using the radio resource, and the data packet includes at least the data to be transferred and biography
Defeated mark, so that response package is replied after being properly received the data packet in the base station.Specifically:
It obtains module 10 and first obtains the data to be transferred for needing to send, and be sent to random access module 11 and data transmission mould
Block 12.
If the data volume is less than or equal to the data threshold, the random access module 11 determines that the terminal can be held
Row ST transmission plan.At this point, the random access module 11 will send random access request to base station, wherein the random access
The lead code RA Preamble of request is randomly choosed from the lead code set ST RA Group prestored by terminal and is obtained, concurrently
Give the data transmission blocks 12.
Base station can extract lead code therein after receiving the random access request, according to preset mapping ruler,
It obtains transmitting mark ST ID correspondingly with the lead code.Meanwhile distribution is used for transmission the wireless money of the data to be transferred
Source, wherein the size of the radio resource is identical as the data threshold, and it is unrelated with the data volume of the data to be transferred.So
Afterwards, the information of the radio resource and transmission mark are included in accidental access response message and are sent to data transmission mould by base station
Block 12.
After data transmission blocks 12 receive random access response, the information and transmission of radio resource therein are extracted
Mark.The data transmission blocks 12 first by it is described transmission mark with the terminal send random access request in lead code into
Row compares, if it is determined that transmission mark is corresponding with the lead code, then can deposit the data to be transferred and transmission mark
Enter data packet, the data packet is sent to base station using the radio resource.
Base station will send response package, number after being properly received the data packet to the data transmission blocks 12
Mark and response message ACK are transmitted according to including at least in packet response.
The data transmission blocks 12 can identify base after receiving the response package, by comparing transmission mark
It stands and whether is successfully received the data packet.
The embodiment of the present invention is after determining that data to be transferred and covering grade meet preset condition, and random access module 11 is to base
It stands and sends the random access request comprising the randomly selected lead code from the lead code set prestored, base station is according to the lead code
Unique corresponding transmission mark is obtained, is included in random access response together with radio resource and is sent to data transmission blocks
12, so that so that data transmission blocks 12 is able to use the radio resource is sent to the base station for data to be transferred, to save
A large amount of signaling consumption, improves the service efficiency of radio resource.
Fig. 5 is the architecture of base station schematic diagram that the data for NB-IoT of the embodiment of the present invention are transmitted, as shown in figure 5, institute
Stating base station includes: receiving module 20 and sending module 21, wherein
The receiving module 20 is used to receive is determining the data to be transferred obtained no more than the data threshold prestored by terminal
When the random access request that sends, it is random from the lead code set prestored that the random access request includes at least the terminal
The lead code of selection；The sending module 21 includes at least wireless for sending random access response, the random access response
The information and transmission mark of resource, the transmission mark is corresponded with the lead code, so that the terminal uses the nothing
Line resource replys data packet, and the data packet includes at least the data to be transferred and transmission mark；The sending module 21 is also used
In if it is determined that being properly received the data packet, then to terminal transmission response package.Specifically:
Terminal needs the data volume to the data to be transferred to be defined after obtaining the data to be transferred for needing to send, if
The data volume of the data to be transferred is greater than the data threshold ST MAX prestored, then determines that the terminal can not use ST transmission plan,
And continue to execute CP transmission plan.
And if the data volume is less than or equal to the data threshold, determines that the terminal can execute ST transmission plan.This
When, the receiving module 20, which can be received, to be sent random access request by terminal and is sent to sending module 21, wherein this is random
The lead code RA Preamble of access request is randomly choosed from the lead code set ST RA Group prestored by terminal and is obtained.
Sending module 21 can extract lead code therein after receiving the random access request, according to preset mapping
Rule obtains transmitting mark ST ID correspondingly with the lead code.Meanwhile it can be used for transmitting institute to the terminal distribution
State the radio resource of data to be transferred, wherein the size of the radio resource is identical as the data threshold, and with the number to be passed
According to data volume it is unrelated.Then, the information of the radio resource and transmission mark are included in random access and rung by sending module 21
It answers and is sent to the terminal in message.
In executing ST transmission plan process, after terminal receives random access response, wireless money therein is extracted
The information and transmission mark in source.It is leading in the random access request that the terminal first sends the transmission mark with the terminal
Code is compared, if it is determined that transmission mark is corresponding with the lead code, then can mark the data to be transferred and transmission
Know deposit data packet, the data packet is sent to the receiving module 20 using the radio resource.
Receiving module 20 will indicate that the sending module 21 is sent to the terminal after being properly received the data packet
Response package includes at least transmission mark and response message ACK in response package.
The terminal can identify that receiving module 20 is after receiving the response package, by comparing transmission mark
It is no to be successfully received the data packet.
Device provided in an embodiment of the present invention for executing the above method, function with specific reference to above method embodiment,
Its specific method process repeats no more here.
The embodiment of the present invention after determining that data to be transferred and covering grade meet preset condition, send out to receiving module 20 by terminal
The random access request comprising the randomly selected lead code from the lead code set prestored is sent, sending module 21 is leading according to this
Code obtains unique corresponding transmission mark, is included in random access response together with radio resource and is sent to terminal, to make
Terminal is able to use the radio resource and data to be transferred is sent the receiving module 20, so that a large amount of signaling consumption is saved,
Improve the service efficiency of radio resource.
Fig. 6 is the electronic devices structure schematic diagram of the embodiment of the present invention.As shown in fig. 6, the electronic equipment, comprising: place
Manage device (processor) 601, memory (memory) 602 and bus 603；
Wherein, the processor 601 and the memory 602 complete mutual communication by the bus 603；
The processor 601 is used to call the program instruction in the memory 602, to execute above-mentioned each method embodiment
Provided method, for example, obtain data to be transferred；If the data to be transferred is not more than the data threshold prestored, Xiang Ji
It stands and sends random access request, the random access request includes at least randomly selected leading from the lead code set prestored
Code, so that random access response is replied in the base station, the random access response includes at least the information and transmission of radio resource
Mark, the transmission mark are corresponded with the lead code；Data packet, institute are sent to the base station using the radio resource
Data packet is stated including at least the data to be transferred and transmission mark, so that the base station is replied after being properly received the data packet
Response package.
Further, the embodiment of the present invention discloses a kind of computer program product, and the computer program product includes depositing
The computer program in non-transient computer readable storage medium is stored up, the computer program includes program instruction, when described
When program instruction is computer-executed, computer is able to carry out method provided by above-mentioned each method embodiment, for example, obtains
Take data to be transferred；If the data to be transferred is not more than the data threshold that prestores, send random access request to base station, it is described with
Machine access request includes at least the randomly selected lead code from the lead code set prestored, connects at random so that the base station is replied
Enter to respond, the random access response is identified including at least the information of radio resource and transmission, before the transmission identifies and is described
Leading code corresponds；Data packet is sent to the base station using the radio resource, the data packet includes at least described to be passed
Data and transmission mark, so that response package is replied after being properly received the data packet in the base station.
Further, the embodiment of the present invention provides a kind of non-transient computer readable storage medium, the non-transient calculating
Machine readable storage medium storing program for executing stores computer instruction, and the computer instruction makes the computer execute above-mentioned each method embodiment institute
The method of offer, for example, obtain data to be transferred；If the data to be transferred is not more than the data threshold prestored, Xiang Jizhan
Random access request is sent, the random access request includes at least randomly selected leading from the lead code set prestored
Code, so that random access response is replied in the base station, the random access response includes at least the information and transmission of radio resource
Mark, the transmission mark are corresponded with the lead code；Data packet, institute are sent to the base station using the radio resource
Data packet is stated including at least the data to be transferred and transmission mark, so that the base station is replied after being properly received the data packet
Response package.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
The embodiments such as electronic equipment described above are only schematical, wherein it is described as illustrated by the separation member
Unit may or may not be physically separated, and component shown as a unit may or may not be object
Manage unit, it can it is in one place, or may be distributed over multiple network units.It can select according to the actual needs
Some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying wound
In the case where the labour for the property made, it can understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of data transmission method of NB-IoT characterized by comprising
Obtain data to be transferred；
If the data to be transferred is not more than the data threshold prestored, random access request, the random access are sent to base station
Request includes at least the randomly selected lead code from the lead code set prestored, rings so that random access is replied in the base station
It answers, the random access response includes at least the information and transmission mark of radio resource, the transmission mark and the lead code
It corresponds；
Data packet is sent to the base station using the radio resource, the data packet includes at least the data to be transferred and transmission
Mark, so that response package is replied after being properly received the data packet in the base station.
2. the method according to claim 1, wherein the method also includes obtaining covering grade, correspondingly, institute
State method further include:
If the covering grade is unsatisfactory for preset grade threshold range, CP transmission plan is executed.
3. method according to claim 1 or 2, which is characterized in that the method also includes:
The small data transmission information sent by base station is received, the small data transmission information includes at least the data threshold with before
Leading code set.
4. method according to claim 1 or 2, which is characterized in that the method also includes:
If it is determined that the transmission mark and the lead code of the random access request sent in the random access response received be not corresponding,
It is then counted in distinct count device, and after the one random time of waiting, retransmits the random access request.
5. according to the method described in claim 5, it is characterized in that, the method also includes:
If the value of the distinct count device is greater than preset retransmission threshold value, the distinct count device is closed, and executes CP transmission
Scheme.
6. a kind of data transmission method of NB-IoT characterized by comprising
Receive the random access request sent by terminal when determining that the data to be transferred obtained is not more than the data threshold prestored, institute
Random access request is stated including at least the terminal randomly selected lead code from the lead code set prestored；
Random access response is sent, the random access response includes at least the information and transmission mark of radio resource, the biography
Defeated mark is corresponded with the lead code, so that the terminal replys data packet, the data packet using the radio resource
Including at least the data to be transferred and transmission mark；
If it is determined that being properly received the data packet, then response package is sent to the terminal.
7. a kind of terminal that the data for NB-IoT are transmitted characterized by comprising
Obtain module, for obtaining data to be transferred；
If random access module is not more than the data threshold prestored for the data to be transferred, random access is sent to base station
Request, the random access request includes at least the randomly selected lead code from the lead code set prestored, so that the base
It stands and replys random access response, the random access response includes at least the information and transmission mark of radio resource, the transmission
Mark is corresponded with the lead code；
Data transmission blocks send data packet to the base station using the radio resource, and the data packet includes at least described
Data to be transferred and transmission mark, so that response package is replied after being properly received the data packet in the base station.
8. a kind of base station that the data for NB-IoT are transmitted characterized by comprising
Receiving module, for receive by terminal determine obtain data to be transferred be not more than prestore data threshold when send with
Machine access request, it is randomly selected leading from the lead code set prestored that the random access request includes at least the terminal
Code；
Sending module, for sending random access response, the random access response includes at least the information and biography of radio resource
Defeated mark, the transmission mark is corresponded with the lead code, so that the terminal replys data using the radio resource
Packet, the data packet include at least the data to be transferred and transmission mark；
The sending module is also used to if it is determined that being properly received the data packet, then to terminal transmission response package.
9. a kind of electronic equipment, which is characterized in that including memory and processor, the processor and the memory pass through always
Line completes mutual communication；The memory is stored with the program instruction that can be executed by the processor, the processor tune
The method as described in claim 1 to 6 is any is able to carry out with described program instruction.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program quilt
The method as described in claim 1 to 6 is any is realized when processor executes.
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| CN110519856B (en) | 2021-08-17 |
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