CN109640303A - A kind of wireless communication system realizing packet data and uploading - Google Patents
A kind of wireless communication system realizing packet data and uploading Download PDFInfo
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- CN109640303A CN109640303A CN201811512786.XA CN201811512786A CN109640303A CN 109640303 A CN109640303 A CN 109640303A CN 201811512786 A CN201811512786 A CN 201811512786A CN 109640303 A CN109640303 A CN 109640303A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/04—Error control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/005—Transmission of information for alerting of incoming communication
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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
Abstract
The present invention relates to wireless communication technique or Internet of Things technical field of RFID, disclose a kind of wireless communication system realizing packet data and uploading.It creates through the invention, it can provide a kind of wireless communication system that data upload task can be rapidly completed for magnanimity wireless terminal/active label, i.e. during waking up magnanimity wireless terminal/active label, wireless terminal/active label can be made voluntarily to determine place end packet by being grouped instruction, and the feedback data in responsive channels corresponding with place end packet, due to being that magnanimity wireless terminal/active label point is carried out data upload in different channels, it may be implemented concurrently to upload data and reduce the purpose of message transition collision probability, and then the data that all terminal/labels can be rapidly completed upload task.In addition, the wireless communication system also has many advantages, such as that dynamic equalization is grouped, is energy saving and flexible in application conducive to terminal, it is convenient for practical promotion and application.
Description
Technical field
The invention belongs to wireless communication technique or Internet of Things technical field of RFID, and in particular to a kind of realization packet count
According to the wireless communication system of upload.
Background technique
Radio frequency identification, RFID (Radio Frequency Identification) technology, also known as radio frequency identification are
A kind of wireless communication technique, is commonly called as electronic tag, can identify specific objective by radio signals and read and write related data,
In, the electronic tag with independent current source power supply is also known as active label, otherwise referred to as passive label.Current RFID technique is
Be widely used in every field, for example, sale of goods, transport, production, waste management, postal tracking, aviation luggage management,
The fields such as vehicle toll management, traditional paper tape bar code because its storage capacity is small, cannot rewrite the disadvantages of, identification field,
It is slowly substituted by RFID system.
One typical RFID of Internet-of-things system is by a reader (also referred to as reader or base station) and multiple active marks
Sign the wireless communication system of (also referred to as electronic tag or wireless terminal) composition, wherein reader is used for a series of by sending
Wireless command or message wake up and are chronically at the active label of dormant state, and it is respectively exclusive active to allow active label to return
Tag addresses information and relevant local data information, to realize that data upload purpose.Such as fire-fighting is used for for one
The RFID of Internet-of-things system of fire alarm system needs periodically or non-periodically to obtain the equipment alarm data field letter of each active label
Breath, petroleum technology equipment area information and/or device sensor acquisition data zone information etc., so as to concentrate grasp various loci (
The position need to arrange active label in advance) fire-fighting fire condition.
In data upload process, need active label that local data information is seriatim uploaded to reading upon awakening
Device, but for the RFID system (namely wireless communication system) with magnanimity active label, not only need long time
The data of each active label are uploaded one by one, due also to number of labels is extremely more, data upload is being carried out by channel competition mechanism
When will to will lead to message transition collision problem extremely obvious, the invalid situation that uploads increases, so that the schedule that label uploads data is bright
Aobvious lag, this, which means that, needs to wait more times just the data that can be collected into all labels and upload in reading device side, because
The data upload task of magnanimity active label is rapidly completed it is necessary to provide a kind of new method or new system for this.
Summary of the invention
In order to solve the problems such as collision problem in the presence of available data upload procedure is obvious and schedule is slow, this
Goal of the invention is to provide a kind of wireless communication system realizing packet data and uploading.
The technical scheme adopted by the invention is as follows:
A kind of wireless communication system realizing packet data and uploading, including base station and several wireless terminals, wherein the base
It stands including the first wireless transmitting unit and the first radio receiving unit, the wireless terminal includes the second radio receiving unit, divides
Group acknowledge unit and the second wireless transmitting unit；
First wireless transmitting unit, for the broadcast terminal wakeup message on waking up channel, wherein the terminal is called out
Awake message package contains end packet instruction information；
First radio receiving unit receives the data from wireless terminal and uploads for listening to each responsive channels
Message；
Second radio receiving unit wakes up channel for periodically listening to, receives the terminal from base station
Wakeup message；
The packet acknowledgement unit, for after being successfully received the terminal wakeup message, according to the end packet
Indicate that information determines place end packet；
Second wireless transmitting unit, it is competing by channel in responsive channels corresponding with place end packet
Mechanism is striven to data upload message described in base station feedback.
Optimization, the packet acknowledgement unit is used for the end packet number of application end packet instruction information instruction
Mesh carries out complementation calculating to local terminal id number, end packet where then determining according to complementation calculated result.
Optimization, first wireless transmitting unit is also used in the data for being successfully received some wireless terminal feedback
After passing message, confirmation message is uploaded to the wireless terminal feedback data on an acknowledgment channel；
Second radio receiving unit is also used to after sending the data upload message, interception confirming channel, is received
From base station and data corresponding with the data upload message upload confirmation message；
The wireless terminal further includes retransmitting judging unit, wherein the repeating transmission judging unit is not for receiving on schedule
When data corresponding with data upload message upload confirmation message, determines to send failure, then start second wireless transmission
Unit retransmits the data upload message, until the sending times of the data upload message reach maximum retransmission.
It advanced optimizing, first wireless transmitting unit is also used to before sending the data and uploading confirmation message,
The terminal address information of multiple wireless terminals is added to the data to upload in confirmation message.
Optimization, the base station further includes that statistics estimates unit；
The statistics estimates unit, and for periodically counting the message packet loss of each responsive channels, then basis disappears
Breath packet loss with uploading the mapping relations of terminal number, obtain going up transmission terminal in each end packet estimate number
Mesh subsequently determines and is uploading the first terminal grouping of terminal number with maximum and there is minimum to upload terminal number
Second terminal grouping, finally send end packet on waking up channel and/or acknowledgement channel and change message, wherein each end
End grouping is corresponded with each responsive channels, and the end packet change message package contains the grouping of the first terminal grouping
The grouping unique identification and belong to the shared of the part wireless terminal that first terminal is grouped that unique identification, the second terminal are grouped
Especially mark；
The packet acknowledgement unit is also used to upload but receive in unfinished data the end packet change message
When, if it is determined that local terminal id number is matched with the shared especially mark, then only according to the grouping of first terminal grouping
Place end packet is changed to by the grouping unique identification of one mark and second terminal grouping from first terminal grouping
The second terminal grouping.
It advanced optimizes, second wireless transmitting unit is also used to upload in unfinished data but receives the terminal
After grouping change message, if end packet change message also includes the grouping unique identification and group of each end packet
The number of estimating of transmission terminal is inside being gone up, then is going up transmission terminal in the group of end packet where determining according to grouping unique identification
Estimate number, then according to this estimate number update setting by channel competition mechanism send when keeping out of the way of data upload message
Between.
It advanced optimizing, first wireless transmitting unit is also used to before sending the data and uploading confirmation message,
If obtained going up transmission terminal in each end packet estimate number, by the grouping unique identification of each end packet with
And the interior number of estimating for going up transmission terminal of group is added in the data upload confirmation message；
Second wireless transmitting unit is also used to upload but receive in unfinished data the data and uploads confirmation message
Afterwards, the number of estimating of transmission terminal is being gone up where determining according to grouping unique identification in the group of end packet, it is then pre- according to this
Estimate number and updates the back off time that setting sends data upload message by channel competition mechanism.
Optimization, first wireless transmitting unit for broadcasting the terminal wakeup message as follows: calling out
Wake up on channel and within the first period continuity the period send multiple terminal wakeup messages, wherein the terminal wakes up
Message also includes the first period duration information and current message tranmitting data register information, and the first period duration information is for referring to
Show the duration t of first period, the current message tranmitting data register information is used to indicate from the initial time of the first period
To the timestamp t of current message sending instantx。
Optimization, first wireless transmitting unit is also used to before broadcasting the terminal wakeup message, by source address
Invalid bit and/or broadcast address invalid bit are added in the terminal wakeup message, wherein the source address invalid bit is for referring to
Show that there is no source address informations in the terminal wakeup message, the broadcast address invalid bit is used to indicate calls out in the terminal
Broadcast address information is not present in message of waking up, the source address information is used to indicate sender's body of the terminal wakeup message
Part, the broadcast address information is used to indicate recipient's identity of the terminal wakeup message.
Optimization, second wireless transmitting unit is also used to disappear by the channel competition mechanism transmission data upload
Before breath and when the terminal wakeup message also includes password authentication selection information and password information, first according to the password authentication
Selection information the correspondence password content prestored is searched in local storage, then judge the password content found whether with institute
It is consistent to state password information, permits to send the data upload message if consistent, otherwise refusal is sent, wherein the password is tested
Card selection information is used to indicate password unique identification corresponding with the password information.
The invention has the benefit that
(1) the invention provides one kind and data can be rapidly completed and upload for magnanimity wireless terminal/active label and appoints
The wireless communication system of business can be made wirelessly that is, during waking up magnanimity wireless terminal/active label by being grouped instruction
End packet where terminal/active label voluntarily determines, and the feedback data in responsive channels corresponding with place end packet,
Due to being that magnanimity wireless terminal/active label point is carried out data upload in different channels, may be implemented concurrently to upload number
According to and reduce message transition collision probability purpose, and then can be rapidly completed all terminal/labels data upload task；
(2) wireless communication system also has many advantages, such as that dynamic equalization is grouped, is energy saving and flexible in application conducive to terminal,
Convenient for practical promotion and application.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the method flow schematic diagram that realization packet data provided by the invention uploads.
Fig. 2 is the message time sequence schematic diagram provided by the invention in data upload process.
Fig. 3 is the structural schematic diagram for the wireless communication system that realization packet data provided by the invention uploads.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is further elaborated.It should be noted that for this
The explanation of a little way of example is used to help understand the present invention, but and does not constitute a limitation of the invention.It is disclosed herein specific
Structure and function details is only used for description example embodiments of the present invention.However, this hair can be embodied with many alternative forms
It is bright, and be not construed as limiting the invention in embodiment set forth herein.
It will be appreciated that though term first, second etc. can be used herein to describe various units, these units are not answered
When being limited by these terms.These terms are only used to distinguish a unit and another unit.Such as it can be single by first
Member is referred to as second unit, and similarly second unit can be referred to as first unit, real without departing from example of the invention
Apply the range of example.
It should be appreciated that the terms "and/or", only a kind of incidence relation for describing affiliated partner, expression can be with
There are three kinds of relationships, for example, A and/or B, can indicate: individualism A, individualism B exist simultaneously tri- kinds of situations of A and B,
The terms "/and " are to describe another affiliated partner relationship, indicate may exist two kinds of relationships, can be with for example, A/ and B
Indicate: two kinds of situations of individualism A, individualism A and B, in addition, character "/" herein, typicallying represent forward-backward correlation object is
A kind of "or" relationship.
It should be appreciated that when by unit referred to as with another unit " connection ", " connected " or " coupling " when, it can with it is another
A unit is directly connected or couples or temporary location may exist.Relatively, it is referred to as with another unit " directly when by unit
It is connected " or when " direct-coupling ", temporary location is not present.It should explain in a similar manner for describing the relationship between unit
Other words (for example, " ... between " to " between directly existing ... ", " adjacent " is to " direct neighbor " etc.).
Terms used herein are only used for description specific embodiment, and are not intended to limitation example embodiments of the present invention.
As it is used herein, singular "a", "an" and "the" is intended to include plural form, unless context is explicitly indicated
Contrary.It should also be understood that term " includes ", " including ", "comprising", and/or " containing " are as used herein,
Specified stated feature, integer, step, operation, unit and/or component existence, and be not excluded for it is one or more its
His feature, quantity, step, operation, unit, component and/or their combination existence or increase.
It will be further noted that the function action occurred may be with the sequence of attached drawing appearance in some alternative embodiments
It is different.Such as it depends on substantially being executed concurrently in related function action, or sometimes can be with
Opposite sequence executes continuously show two figures.
Specific details is provided, in the following description in order to which example embodiment is understood completely.However ability
Domain those of ordinary skill is it is to be understood that implementation example embodiment without these specific details.Such as it can be
System is shown in block diagram, to avoid with unnecessary details come so that example is unclear.It in other instances, can not be with need not
The details wanted shows well-known process, structure and technology, to avoid making example embodiment unclear.
Embodiment one
As illustrated in fig. 1 and 2, the side for realizing packet data in a wireless communication system and uploading provided in this embodiment
Method can be, but not limited to include the following steps.
S101. base station broadcast terminal wakeup message on waking up channel, wherein the terminal wakeup message includes terminal
Grouping instruction information.
In the step S101, the base station be can be, but not limited to as reader or reader, and the terminal wake-up disappears
Wireless terminal of the breath for wake-up period sleep (can be, but not limited to as active label or electronic tag, whether half-duplex mark
Label or full duplex label, can be assumed that it is wireless terminal), it ensures that and wakes up all wireless terminals, optimization, according to
Under type broadcasts the terminal wakeup message: the continuity ground multiple institutes of period transmission on waking up channel and within the first period
State terminal wakeup message, wherein when the terminal wakeup message also includes the first period duration information and current message transmission
Clock information, the first period duration information are used to indicate the duration t of first period, the current message tranmitting data register letter
Breath is used to indicate the timestamp t from the initial time of the first period to current message sending instantx.Matched by aforementioned information
It sets, can also make wireless terminal after obtaining the first period duration information and current message tranmitting data register information, it is known that this
The broadcast-end-time of the terminal wakeup message is taken turns, it is possible thereby to which a longer temporary sleep time (i.e. t-t is arrangedx),
It,, can be with due to no longer needing to upload data for the wireless terminal for having completed data upload conducive to terminal energy conservation
It wakes up again after directly sleeping broadcast.It advanced optimizes, the duration t of first period is greater than the sleep week of wireless terminal
Phase T, the sleep cycle T include the period sleep time T of wireless terminalsleepWith period awakening duration Twake, the terminal calls out
The broadcast cycle for message of waking up is less than the period awakening duration T of wireless terminalwake.It is arranged by aforementioned duration, it can be ensured that wireless
Terminal can completely receive the terminal wakeup message in the awakening duration of any one sleep cycle, prevent to occur waking up to lose
Leakage.Citing, the duration T if the period awakenswakeFor 100ms, the period sleep time TsleepIt is for 3900ms, then wireless whole
The sleep cycle at end is 4 seconds, and the broadcast cycle may be designed as 60ms (assuming that a length of when the transmission of the terminal wakeup message
50ms reserves the time slot spacing of 10ms), the duration of first period may be designed as 4020ms, can continuously broadcast 67 institutes
State terminal wakeup message.
In the step S101, since the terminal wakeup message can externally inform that it is wide by message Frame Properties
Message is broadcast, therefore for wireless terminal, it may not be necessary to know identity of the sender and/or the reception of the terminal wakeup message
Person's identity, therefore optimize, the terminal wakeup message also may include source address invalid bit and/or broadcast address invalid bit,
Wherein, the source address invalid bit, which is used to indicate in the terminal wakeup message, is not present source address information, the broadcast ground
Location invalid bit is used to indicate in the terminal wakeup message there is no broadcast address information, and the source address information is used to indicate
The identity of the sender of the terminal wakeup message, the broadcast address information are used to indicate the recipient of the terminal wakeup message
Identity.By the address default configuration of aforementioned terminals wakeup message, the message-length that can effectively shorten (can generally shorten 4 bytes
Or 8 bytes) and duration is sent, not only it is conducive to base station and sends energy conservation, improve channel utilization, can also effectively shortens wireless terminal
Period awaken duration, further be conducive to wireless terminal energy conservation.
S102. wireless terminal periodically listens to wake up channel, and after being successfully received the terminal wakeup message, root
End packet where being determined according to end packet instruction information, finally in responsive channels corresponding with place end packet,
By channel competition mechanism to base station feedback data upload message.
In the step S102, the end packet instruction information is used to help terminal where wireless terminal voluntarily determines
Grouping, optimization, if end packet instruction information is end packet number, wireless terminal applies the end packet number
Complementation calculating is carried out to local terminal id number, end packet where then determining according to complementation calculated result.It can certainly
End packet where helping group wireless terminal voluntarily to determine using other way, such as the end number according to terminal ID number.
Since wireless terminal can voluntarily determine place end packet and only feed back in responsive channels corresponding with place end packet
Magnanimity wireless terminal/active label point can be carried out in different channels data upload, may be implemented concurrently to upload by data
Data and the purpose for reducing message transition collision probability, and then the data that all wireless terminal/active labels can be rapidly completed upload and appoint
Business.Such as there are the data of 1000 wireless terminals to upload scene, the end packet number can be designed as 4, in turn
Magnanimity label can be divided into 4 groups, every group theoretically there are 250 wireless terminals, and makes them respectively in 4 different responsive channels
Upper competition uploads the data upload message, it is possible thereby to realize 4 Lu Bingchuan data and reduce the purpose of message transition collision probability.This
Outside, the dedicated channel different from the wake-up channel can be selected in the responsive channels, can lead to the corresponding relationship of end packet
Standard agreement default is crossed, can also be specified in the terminal wakeup message, such as the end packet for being 0 for remainder,
Specified first responsive channels；The end packet for being 1 for remainder specifies the second responsive channels；The terminal point for being 2 for remainder
Group specifies third responsive channels, etc..The data upload message can be, but not limited to comprising equipment alarm data zone information,
Petroleum technology equipment area information and/or device sensor acquisition data zone information etc..
It is whether legal in order to verify base station in the step S102, " pseudo-base station " is prevented, optimization, if described
Terminal wakeup message also includes password authentication selection information and password information, then wireless terminal is sent out by channel competition mechanism
Before sending the data upload message, first information is selected to search the correspondence mouth prestored in local storage according to the password authentication
Content is enabled, then judges whether the password content found is consistent with the password information, permits to send the number if consistent
According to upload message, otherwise refusal is sent, wherein the password authentication selection information is used to indicate corresponding with the password information
Password unique identification.Due to the password authentication select information and password content corresponding relationship be preset in advance it is legal wireless
In terminal, and the corresponding relationship with the password authentication selection information and the password information that are preset in legitimate base station in advance
Unanimously, aforementioned corresponding relationship is not preset in " pseudo-base station ", therefore wireless terminal can be voluntarily according to password content and mouth
It enables the check results of information determine whether the base station for initiating wakeup message is legal, and only just allows to respond when confirming legal to upload
Data, it is possible thereby to effectively evade the security risk that " pseudo-base station " steals data, realization ensures data safety in interactive process
Purpose.In addition, the dedicated channel different from the wake-up channel can be selected in the responsive channels.
Advanced optimize, before the step S102, in order to further ensure that password authentication selection information and/
Or the transmission safety of the password information, it prevents from being intercepted in the air by other " hacker " websites, it is therefore necessary to aforementioned important letter
Breath encrypts, that is, optimizes, and base station randomly chooses one before broadcasting the terminal wakeup message from local storage
Kind Encryption Algorithm/and encryption key select information and/or the password information to encrypt the password authentication, and described
It include that the first Encryption Algorithm selection information/and the first encryption key select information in terminal wakeup message, wherein described first
Encryption Algorithm selection information is used to indicate in the encryption password authentication selection information and/or the password information during institute
Using the algorithm unique identification of Encryption Algorithm, the first encryption key selection information, which is used to indicate, is encrypting the password authentication
The key unique identification of used encryption key during selection information and/or the password information；Wireless terminal is receiving
After the terminal wakeup message, first information is selected to search the correspondence prestored in local storage according to first Encryption Algorithm
Decipherment algorithm/and according to first encryption key select information the correspondence decruption key prestored is searched in local storage,
Then the password authentication selection information and/or the password are obtained using the decipherment algorithm found and/decryption key decryption
Information.Wherein, the corresponding relationship of the first Encryption Algorithm selection information and decipherment algorithm is preset at legal wireless end in advance
In end, and the corresponding relationship with first Encryption Algorithm selection information and Encryption Algorithm that are preset in legitimate base station in advance
Match；The corresponding relationship of the first encryption key selection information and decruption key is preset in advance in legal wireless terminal, and
It is matched with first encryption key selection information being preset in legitimate base station in advance with the corresponding relationship of encryption key.Due to
" hacker " website cannot predict aforementioned corresponding relationship in advance, thus be difficult to crack to obtain the password authentication selection information and/or
The password information can further promote safety.
S103. base station receives the data upload message by listening to each responsive channels.
In the step S103, since wireless terminal is to feed back the data upload message by channel competition mechanism,
Therefore there is the phenomenon that leading to reception failure because of risk of collision etc., it is therefore necessary to inform whether wireless terminal receives success,
Optimize, base station is after being successfully received the data upload message of some wireless terminal feedback, on an acknowledgment channel to the nothing
Line terminal feedback data uploads confirmation message；Wireless terminal is after sending the data upload message, interception confirming channel, if not
Data corresponding with the data upload message are received on schedule and upload confirmation message, then determine to send failure, then pass through channel
Competition mechanism retransmits the data upload message to base station, until the sending times of the data upload message reach maximum re-transmission
Number.The dedicated channel different from the wake-up channel or the responsive channels can be selected in the acknowledgement channel.In addition it illustrates,
The maximum retransmission can be designed specifically to 3 times.Further, since being concurrently to upload data, exists while having successfully received more
The case where a data upload message, is further conducive to terminal energy conservation to reduce the duration of wireless terminal interception confirming channel, because
This is advanced optimized it is necessary to be confirmed parallel, it includes multiple wireless terminals that the data, which upload confirmation message,
Terminal address information, and then data can be carried out to multiple wireless terminals with the same message frame and upload confirmation.
In the step S103, consider wireless terminal after grouping or in data upload process, it is understood that there may be in group not
The unbalanced situation of wireless terminal quantity that data upload and (do not receive the data and upload confirmation message) is completed, such as at certain
There are the wireless terminals that 300 unfinished data upload in one group, and there is only 100 unfinished data to upload in another group
Wireless terminal advanced optimize, base station is periodically united therefore for the purpose of wireless terminal number in dynamic equalization group
The message packet loss of each responsive channels is counted, then according to message packet loss and the mapping relations for uploading terminal number, is obtained
The number of estimating for going up transmission terminal in each end packet is taken, subsequently determines that there is maximum to upload terminal number
One end packet and the second terminal grouping that terminal number is being uploaded with minimum, are finally waking up channel and/or confirmation letter
End packet is sent on road and changes message, wherein each end packet and each responsive channels correspond, the end packet
Change message package contain the grouping unique identification of first terminal grouping, the grouping unique identification that the second terminal is grouped and
Belong to the shared special mark of the part wireless terminal of first terminal grouping；The wireless terminal that data upload is not completed to receive
After the end packet change message, if it is determined that local terminal id number is matched with the shared especially mark, then according to
The grouping unique identification that the grouping unique identification and the second terminal of first terminal grouping are grouped, by place end packet from institute
It states first terminal grouping and is changed to the second terminal grouping.Due to message packet loss be largely by message transition collision and
It is caused, therefore pass through the available message packet loss of routine test and the mapping relations for uploading terminal number, the mapping
Relationship can be the mapping relations of a pair of of numberical range, such as 0~1% message packet loss, corresponding to upload end
Holding number can be 0~50；For 2~3% message packet loss, the corresponding terminal number that uploading can be 100~200.This
Outside, the shared especially mark can be, but not limited to the last figure for terminal ID number.From there through preceding method, can incite somebody to action
Part wireless terminal accelerates first eventually from the second terminal grouping that the grouping of a fairly large number of first terminal is divided into negligible amounts
The data upload progress of wireless terminal in the grouping of end realizes that the data that all wireless terminals are finally rapidly completed upload task.
It advanced optimizes, in the group in order to enable not completing end packet where the wireless terminal that data upload is known
Terminal number is being uploaded, it is described so that the back off time for sending data upload message by channel competition mechanism is set dynamically
End packet change message also includes the grouping unique identification of each end packet and is going up estimating for transmission terminal in organizing
Number；The wireless terminal of data upload is not completed after receiving the end packet change message, it is true according to grouping unique identification
The number of estimating of transmission terminal is being gone up where fixed in the group of end packet, number update setting is then estimated according to this and passes through channel
The back off time of competition mechanism transmission data upload message.Wherein, wireless terminal according to this estimate number update setting keep out of the way when
Between concrete mode can are as follows: estimate number it is larger when longer current back off time or maximum back off time are set, estimating
Shorter current back off time or maximum back off time are set when number is smaller, it is possible thereby to back off time be set dynamically, into one
Step is conducive to reduce the message packet loss of each responsive channels and all data upload task of each responsive channels is rapidly completed.In addition
, wireless terminal can also be informed in the following way, and base station is before sending the data and uploading confirmation message, if having obtained each
The number of estimating of transmission terminal is being gone up in a end packet, then it is the grouping unique identification of each end packet and group is interior
The number of estimating of upper transmission terminal is added in the data upload confirmation message；The wireless terminal that data upload is not completed to receive
After the data upload confirmation message, the pre- of transmission terminal is being gone up in the group of end packet where determining according to grouping unique identification
Estimate number, number is then estimated according to this and updates the back off time that setting passes through channel competition mechanism transmission data upload message.
To sum up, using the method for realizing that packet data uploads provided by the present embodiment in a wireless communication system, have
Following technical effect:
(1) data upload task can be rapidly completed for magnanimity wireless terminal/active label by present embodiments providing one kind
Method can make wireless terminal/active by being grouped instruction that is, during waking up magnanimity wireless terminal/active label
End packet where label voluntarily determines, and the feedback data in responsive channels corresponding with place end packet, due to be by
Magnanimity wireless terminal/active label point carries out data upload in different channels, may be implemented concurrently to upload data and reduction
The purpose of message transition collision probability, and then the data that all terminal/labels can be rapidly completed upload task；
(2) method for realizing that packet data uploads also has dynamic equalization grouping, is conducive to terminal energy conservation and application
The advantages that flexible, is convenient for practical promotion and application.
Embodiment two
As shown in figure 3, realizing the wireless of packet data method for uploading described in previous embodiment one the present embodiment provides a kind of
Communication system, including base station and several wireless terminals, wherein the base station includes that the first wireless transmitting unit and first wirelessly connects
Unit is received, the wireless terminal includes the second radio receiving unit, packet acknowledgement unit and the second wireless transmitting unit；
First wireless transmitting unit, for the broadcast terminal wakeup message on waking up channel, wherein the terminal is called out
Awake message package contains end packet instruction information；
First radio receiving unit receives the data from wireless terminal and uploads for listening to each responsive channels
Message；
Second radio receiving unit wakes up channel for periodically listening to, receives the terminal from base station
Wakeup message；
The packet acknowledgement unit, for after being successfully received the terminal wakeup message, according to the end packet
Indicate that information determines place end packet；
Second wireless transmitting unit, it is competing by channel in responsive channels corresponding with place end packet
Mechanism is striven to data upload message described in base station feedback.
Optimization, the packet acknowledgement unit is used for the end packet number of application end packet instruction information instruction
Mesh carries out complementation calculating to local terminal id number, end packet where then determining according to complementation calculated result.
Optimization, first wireless transmitting unit is also used in the data for being successfully received some wireless terminal feedback
After passing message, confirmation message is uploaded to the wireless terminal feedback data on an acknowledgment channel；
Second radio receiving unit is also used to after sending the data upload message, interception confirming channel, is received
From base station and data corresponding with the data upload message upload confirmation message；
The wireless terminal further includes retransmitting judging unit, wherein the repeating transmission judging unit is not for receiving on schedule
When data corresponding with data upload message upload confirmation message, determines to send failure, then start second wireless transmission
Unit retransmits the data upload message, until the sending times of the data upload message reach maximum retransmission.
It advanced optimizing, first wireless transmitting unit is also used to before sending the data and uploading confirmation message,
The terminal address information of multiple wireless terminals is added to the data to upload in confirmation message.
Optimization, the base station further includes that statistics estimates unit；
The statistics estimates unit, and for periodically counting the message packet loss of each responsive channels, then basis disappears
Breath packet loss with uploading the mapping relations of terminal number, obtain going up transmission terminal in each end packet estimate number
Mesh subsequently determines and is uploading the first terminal grouping of terminal number with maximum and there is minimum to upload terminal number
Second terminal grouping, finally send end packet on waking up channel and/or acknowledgement channel and change message, wherein each end
End grouping is corresponded with each responsive channels, and the end packet change message package contains the grouping of the first terminal grouping
The grouping unique identification and belong to the shared of the part wireless terminal that first terminal is grouped that unique identification, the second terminal are grouped
Especially mark；
The packet acknowledgement unit is also used to upload but receive in unfinished data the end packet change message
When, if it is determined that local terminal id number is matched with the shared especially mark, then only according to the grouping of first terminal grouping
Place end packet is changed to by the grouping unique identification of one mark and second terminal grouping from first terminal grouping
The second terminal grouping.
It advanced optimizes, second wireless transmitting unit is also used to upload in unfinished data but receives the terminal
After grouping change message, if end packet change message also includes the grouping unique identification and group of each end packet
The number of estimating of transmission terminal is inside being gone up, then is going up transmission terminal in the group of end packet where determining according to grouping unique identification
Estimate number, then according to this estimate number update setting by channel competition mechanism send when keeping out of the way of data upload message
Between.
It advanced optimizing, first wireless transmitting unit is also used to before sending the data and uploading confirmation message,
If obtained going up transmission terminal in each end packet estimate number, by the grouping unique identification of each end packet with
And the interior number of estimating for going up transmission terminal of group is added in the data upload confirmation message；
Second wireless transmitting unit is also used to upload but receive in unfinished data the data and uploads confirmation message
Afterwards, the number of estimating of transmission terminal is being gone up where determining according to grouping unique identification in the group of end packet, it is then pre- according to this
Estimate number and updates the back off time that setting sends data upload message by channel competition mechanism.
Optimization, first wireless transmitting unit for broadcasting the terminal wakeup message as follows: calling out
Wake up on channel and within the first period continuity the period send multiple terminal wakeup messages, wherein the terminal wakes up
Message also includes the first period duration information and current message tranmitting data register information, and the first period duration information is for referring to
Show the duration t of first period, the current message tranmitting data register information is used to indicate from the initial time of the first period
To the timestamp t of current message sending instantx。
Optimization, first wireless transmitting unit is also used to before broadcasting the terminal wakeup message, by source address
Invalid bit and/or broadcast address invalid bit are added in the terminal wakeup message, wherein the source address invalid bit is for referring to
Show that there is no source address informations in the terminal wakeup message, the broadcast address invalid bit is used to indicate calls out in the terminal
Broadcast address information is not present in message of waking up, the source address information is used to indicate sender's body of the terminal wakeup message
Part, the broadcast address information is used to indicate recipient's identity of the terminal wakeup message.
Optimization, second wireless transmitting unit is also used to disappear by the channel competition mechanism transmission data upload
Before breath and when the terminal wakeup message also includes password authentication selection information and password information, first according to the password authentication
Selection information the correspondence password content prestored is searched in local storage, then judge the password content found whether with institute
It is consistent to state password information, permits to send the data upload message if consistent, otherwise refusal is sent, wherein the password is tested
Card selection information is used to indicate password unique identification corresponding with the password information.
It advanced optimizes, first wireless transmitting unit is also used to before broadcasting the terminal wakeup message, from this
A kind of Encryption Algorithm/and encryption key are randomly choosed in ground memory block, and information and/or the password are selected to the password authentication
Information is encrypted, and selects information/and the first encryption key selection information to be added to the terminal and call out the first Encryption Algorithm
In message of waking up, wherein first Encryption Algorithm selection information be used to indicate encrypt the password authentication selection information and/or
The algorithm unique identification of used Encryption Algorithm during the password information, the first encryption key selection information are used for
Indicate the key of used encryption key during encrypting the password authentication selection information and/or the password information only
One mark；
Second radio receiving unit is also used to after receiving the terminal wakeup message, first according to first encryption
Algorithms selection information searches the correspondence decipherment algorithm/prestored in local storage and selects to believe according to first encryption key
Breath searches the correspondence decruption key prestored in local storage, then using the decipherment algorithm found and/decruption key solution
It is close to obtain the password authentication selection information and/or the password information.
The technical detail and technical effect of the present embodiment are consistent with the content of embodiment one, repeat no more in this.
The present invention is not limited to above-mentioned optional embodiment, anyone can show that other are each under the inspiration of the present invention
The product of kind form.Above-mentioned specific embodiment should not be understood the limitation of pairs of protection scope of the present invention, protection of the invention
Range should be subject to be defined in claims, and specification can be used for interpreting the claims.
Claims (10)
1. a kind of wireless communication system realizing packet data and uploading, it is characterised in that: including base station and several wireless terminals,
In, the base station includes the first wireless transmitting unit and the first radio receiving unit, and the wireless terminal wirelessly connects including second
Receive unit, packet acknowledgement unit and the second wireless transmitting unit；
First wireless transmitting unit, for the broadcast terminal wakeup message on waking up channel, wherein the terminal wake-up disappears
Breath includes end packet instruction information；
First radio receiving unit receives the data upload message from wireless terminal for listening to each responsive channels；
Second radio receiving unit wakes up channel for periodically listening to, receives the terminal from base station and wake up
Message；
The packet acknowledgement unit, for being indicated according to the end packet after being successfully received the terminal wakeup message
End packet where information determines；
Second wireless transmitting unit, for passing through channel competition machine in responsive channels corresponding with place end packet
It makes to data upload message described in base station feedback.
2. a kind of wireless communication system realizing packet data and uploading as described in claim 1, it is characterised in that: the grouping
Confirmation unit is used for the end packet number of application end packet instruction information instruction, carries out to local terminal I D number
Complementation calculates, end packet where then being determined according to complementation calculated result.
3. a kind of wireless communication system realizing packet data and uploading as described in claim 1, it is characterised in that: described first
Wireless transmitting unit is also used to after being successfully received the data upload message of some wireless terminal feedback, on an acknowledgment channel to
The wireless terminal feedback data upload confirmation message；
Second radio receiving unit is also used to after sending the data upload message, and interception confirming channel, reception comes from
Base station and data corresponding with data upload message upload confirmation message；
The wireless terminal further includes retransmitting judging unit, wherein the repeating transmission judging unit is used to not receive on schedule and number
When uploading confirmation message according to the corresponding data of upload message, determines to send failure, then start second wireless transmitting unit
The data upload message is retransmitted, until the sending times of the data upload message reach maximum retransmission.
4. a kind of wireless communication system realizing packet data and uploading as claimed in claim 3, it is characterised in that: described first
Wireless transmitting unit is also used to before sending the data and uploading confirmation message, and the terminal address information of multiple wireless terminals is added
The data are added to upload in confirmation message.
5. a kind of wireless communication system realizing packet data and uploading as claimed in claim 1,2 or 3, it is characterised in that: institute
Stating base station further includes that statistics estimates unit；
The statistics estimates unit, for periodically counting the message packet loss of each responsive channels, is then lost according to message
Packet rate and the mapping relations for uploading terminal number, obtain the number of estimating that transmission terminal is being gone up in each end packet, then
Then it determines the first terminal that there is maximum to upload terminal number grouping and is uploading the of terminal number with minimum
Two end packets finally send end packet on waking up channel and/or acknowledgement channel and change message, wherein each terminal point
Group is corresponded with each responsive channels, and the grouping that the end packet change message package contains the first terminal grouping is unique
The grouping unique identification and belong to the shared special of the part wireless terminal that first terminal is grouped that mark, the second terminal are grouped
Mark；
The packet acknowledgement unit, when being also used to that the end packet change message is uploaded but received in unfinished data, if
Determine that local terminal I D number is matched with the shared especially mark, is then uniquely marked according to the grouping that the first terminal is grouped
Know and the grouping unique identification of second terminal grouping, place end packet is changed to from first terminal grouping described
Second terminal grouping.
6. a kind of wireless communication system realizing packet data and uploading as claimed in claim 5, it is characterised in that: described second
After wireless transmitting unit is also used to upload but receive in unfinished data the end packet change message, if the end packet
Change message also includes the grouping unique identification and the interior number of estimating for going up transmission terminal of group of each end packet, then root
The number of estimating for going up transmission terminal where determining according to grouping unique identification in the group of end packet, then estimates number according to this
Update the back off time that setting sends data upload message by channel competition mechanism.
7. a kind of wireless communication system realizing packet data and uploading as claimed in claim 5, it is characterised in that: described first
Wireless transmitting unit is also used to before sending the data and uploading confirmation message, is being uploaded in each end packet if having obtained
Terminal estimates number, then adds the number of estimating that transmission terminal is being gone up in the grouping unique identification of each end packet and group
The data are added to upload in confirmation message；
After second wireless transmitting unit is also used to upload but receive in unfinished data the data upload confirmation message, root
The number of estimating for going up transmission terminal where determining according to grouping unique identification in the group of end packet, then estimates number according to this
Update the back off time that setting sends data upload message by channel competition mechanism.
8. a kind of wireless communication system realizing packet data and uploading as described in claim 1, it is characterised in that: described first
Wireless transmitting unit for broadcasting the terminal wakeup message as follows: connecting on waking up channel and within the first period
Period sends multiple terminal wakeup messages with continuing property, wherein the terminal wakeup message also includes the first period duration
Information and current message tranmitting data register information, the first period duration information are used to indicate the duration t of first period, institute
Current message tranmitting data register information is stated to be used to indicate from the initial time of the first period to the time of current message sending instant
Stab tx。
9. a kind of wireless communication system realizing packet data and uploading as described in claim 1, it is characterised in that: described first
Wireless transmitting unit is also used to before broadcasting the terminal wakeup message, and source address invalid bit and/or broadcast address is invalid
Position is added in the terminal wakeup message, wherein the source address invalid bit is used to indicate in the terminal wakeup message
There is no source address information, the broadcast address invalid bit, which is used to indicate in the terminal wakeup message, is not present broadcast address
Information, the source address information are used to indicate the identity of the sender of the terminal wakeup message, and the broadcast address information is used for
Indicate recipient's identity of the terminal wakeup message.
10. a kind of wireless communication system for realizing packet data upload as described in claim 1, it is characterised in that: described the
Two wireless transmitting units are also used to before sending the data upload message by channel competition mechanism and terminal wake-up disappears
When breath also includes password authentication selection information and password information, first select information in local storage according to the password authentication
It is middle to search the correspondence password content prestored, then judge whether the password content found is consistent with the password information, if one
Cause then permits to send the data upload message, and otherwise refusal is sent, wherein password authentication selection information be used to indicate with
The corresponding password unique identification of the password information.
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| CN201811512786.XA CN109640303A (en) | 2018-12-11 | 2018-12-11 | A kind of wireless communication system realizing packet data and uploading |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111444736A (en) * | 2020-03-24 | 2020-07-24 | 中山大学 | Anti-collision method based on clustering competition, mobile reader and readable storage medium |
| WO2023065336A1 (en) * | 2021-10-22 | 2023-04-27 | Oppo广东移动通信有限公司 | Wireless communication method, terminal device and network device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100201494A1 (en) * | 2007-09-18 | 2010-08-12 | Byung Hoon Ryou | System and method for allowing multiple rfid reader devices to read rfid tags without collision |
| CN102122363A (en) * | 2010-06-08 | 2011-07-13 | 成都西谷曙光数字技术有限公司 | Interactive electronic tag technology-based anti-collision method |
| CN102999739A (en) * | 2011-09-16 | 2013-03-27 | 北京邮电大学 | RFID (radio frequency identification) tag and identification method and identification device |
| CN103729661A (en) * | 2012-10-15 | 2014-04-16 | 成都西谷曙光数字技术有限公司 | System and method for read-write operation of active electronic tags with ultra-low power consumption |
| CN103927504A (en) * | 2014-04-21 | 2014-07-16 | 广西南宁市东森动力信息科技有限公司 | RFID mixed anti-collision algorithm based on dimension code numbers |
| CN103971077A (en) * | 2014-05-22 | 2014-08-06 | 江西理工大学 | ALOHA anti-collision method of ultrahigh frequency RFID system based on CRC code grouping |
| CN104081796A (en) * | 2011-12-02 | 2014-10-01 | 高通股份有限公司 | Systems and methods for group based access control of machine to machine devices |
| CN105517014A (en) * | 2015-11-30 | 2016-04-20 | 成都华程通讯技术有限公司 | Grouping polling method of wireless communication |
| CN107526986A (en) * | 2017-07-28 | 2017-12-29 | 广东农工商职业技术学院(农业部华南农垦干部培训中心) | A kind of RFID label tag collision-proof method and system |
| US20180101704A1 (en) * | 2016-10-08 | 2018-04-12 | Ospicon Systems Pte Ltd | Bi-directional communication system for logistic tracking |
-
2018
- 2018-12-11 CN CN201811512786.XA patent/CN109640303A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100201494A1 (en) * | 2007-09-18 | 2010-08-12 | Byung Hoon Ryou | System and method for allowing multiple rfid reader devices to read rfid tags without collision |
| CN102122363A (en) * | 2010-06-08 | 2011-07-13 | 成都西谷曙光数字技术有限公司 | Interactive electronic tag technology-based anti-collision method |
| CN102999739A (en) * | 2011-09-16 | 2013-03-27 | 北京邮电大学 | RFID (radio frequency identification) tag and identification method and identification device |
| CN104081796A (en) * | 2011-12-02 | 2014-10-01 | 高通股份有限公司 | Systems and methods for group based access control of machine to machine devices |
| CN103729661A (en) * | 2012-10-15 | 2014-04-16 | 成都西谷曙光数字技术有限公司 | System and method for read-write operation of active electronic tags with ultra-low power consumption |
| CN103927504A (en) * | 2014-04-21 | 2014-07-16 | 广西南宁市东森动力信息科技有限公司 | RFID mixed anti-collision algorithm based on dimension code numbers |
| CN103971077A (en) * | 2014-05-22 | 2014-08-06 | 江西理工大学 | ALOHA anti-collision method of ultrahigh frequency RFID system based on CRC code grouping |
| CN105517014A (en) * | 2015-11-30 | 2016-04-20 | 成都华程通讯技术有限公司 | Grouping polling method of wireless communication |
| US20180101704A1 (en) * | 2016-10-08 | 2018-04-12 | Ospicon Systems Pte Ltd | Bi-directional communication system for logistic tracking |
| CN107526986A (en) * | 2017-07-28 | 2017-12-29 | 广东农工商职业技术学院(农业部华南农垦干部培训中心) | A kind of RFID label tag collision-proof method and system |
Non-Patent Citations (2)
| Title |
|---|
| 张学军: "基于标签识别码分组的连续识别防碰撞算法研究", 《电子与信息学报》 * |
| 陈荣伶: "基于标签分组的RFID防碰撞算法", 《计算机应用》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111444736A (en) * | 2020-03-24 | 2020-07-24 | 中山大学 | Anti-collision method based on clustering competition, mobile reader and readable storage medium |
| CN111444736B (en) * | 2020-03-24 | 2021-07-13 | 中山大学 | Anti-collision method based on clustering competition, mobile reader and readable storage medium |
| WO2023065336A1 (en) * | 2021-10-22 | 2023-04-27 | Oppo广东移动通信有限公司 | Wireless communication method, terminal device and network device |
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