CN107769882A - Time synchronized method of adjustment and wireless communication system - Google Patents
Time synchronized method of adjustment and wireless communication system Download PDFInfo
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- CN107769882A CN107769882A CN201711020635.8A CN201711020635A CN107769882A CN 107769882 A CN107769882 A CN 107769882A CN 201711020635 A CN201711020635 A CN 201711020635A CN 107769882 A CN107769882 A CN 107769882A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
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Abstract
The present invention relates to Internet technical field, more particularly to a kind of time synchronized method of adjustment and wireless communication system, method is applied to wireless communication system, each corresponding label of main frame, each main frame sorts according to label size, and each main frame is at least covered with the next main frame adjacent with main frame label sequence.Method includes：First sends main frame sends the first message in the first time slot to the first Receiving Host, first Receiving Host receives the first message and obtains very first time adjustment amount according to the first message and the first time slot, to adjust the time of the first Receiving Host according to very first time adjustment amount.Second sends main frame sends the second message in the second time slot to the second Receiving Host, second Receiving Host receives the second message and obtains the second time adjustment amount according to the second message and the second time slot, to adjust the time of the second Receiving Host according to the second time adjustment amount, until the time of All hosts all adjusts completion.When carrying out accurate pair to each main frame by the above method to realize.
Description
Technical field
The present invention relates to Internet technical field, in particular to a kind of time synchronized method of adjustment and radio communication
System.
Background technology
With the arrival of the Internet of things era, all kinds of Wireless Networkings arise at the historic moment.And wireless anti-collision, collision, it is
The problem of must take into consideration, one of which common technology are time sharing transmissions, the avoidance that wireless device was given out a contract for a project on passage time with up to
To anticollision spatially.Accomplish temporal avoidance completely, it is necessary to a kind of accurate setting means.Traditional time synchronized side
Method has a NTP and GPS, NTP are standard time synchronous protocols on internet, and GPS is to be used for whole world high accuracy navigation and positioning.
NTP time synchronization error is in Millisecond, and GPS time synchronization error is in nanosecond.
Inventor it has been investigated that, existing two kinds of method for synchronizing time are required for specific equipment or node to realize
Time synchronized, therefore in not specific equipment or node, when can not realize accurate pair.
The content of the invention
In view of this, it is an object of the invention to provide a kind of time synchronized method of adjustment and wireless communication system, with
When there is no to realize accurate pair when specific equipment or node.
In order to achieve the above object, present pre-ferred embodiments provide a kind of time synchronized method of adjustment, applied to including
The wireless communication system of multiple main frames, the corresponding label of each main frame, each main frame sort according to label size, Mei Gezhu
Machine at least includes covered with next main frame adjacent with main frame label sequence, methods described：
First sends main frame sends the first message in corresponding first time slot to the first Receiving Host, wherein, Duo Gezhu
The main frame that label ranks the first in machine is the described first transmission main frame, and at least one main frame of the first transmission main frame covering is
First Receiving Host；
First Receiving Host receives first message, and is obtained according to first message and first time slot
Very first time adjustment amount；
First Receiving Host adjusts the time of first Receiving Host according to the very first time adjustment amount；
Second sends main frame sends the second message in corresponding second time slot to the second Receiving Host, wherein, described the
Two send main frame as the adjacent main frame of the label of the described first transmission main frame, and second Receiving Host is that the described second transmission is led
At least one main frame of machine covering；
Second Receiving Host receives second message, and is obtained according to second message and second time slot
Second time adjustment amount；
Second Receiving Host adjusts the time of second Receiving Host according to the second time adjustment amount, until
The time of All hosts all adjusts completion.
In the preferred embodiment, in above-mentioned time synchronized method of adjustment, first message includes
One sends duration and the first sending time slots offset, and second message includes the second transmission duration and the second slot offset
Amount；
The step of obtaining very first time adjustment amount according to first message and first time slot includes：
The first transmission duration, the first sending time slots offset and first time slot in first message obtain
Very first time adjustment amount, wherein, described first sends duration obtains according to the length of first message, and first time slot is inclined
Shifting amount is the delivery time and the difference of the starting point of first time slot of first message；
The step of obtaining the second time adjustment amount according to second message and second time slot includes：
The second transmission duration, the second sending time slots offset and second time slot in second message obtain
Second time adjustment amount, wherein the second transmission duration obtains according to the length of second message, second time slot is inclined
Shifting amount is the delivery time and the difference of the starting point of second time slot of second message.
In the preferred embodiment, in above-mentioned time synchronized method of adjustment, the first Receiving Host storage
There is the first crystal oscillator deviation time, the second Receiving Host is stored with the second crystal oscillator deviation time；
The first transmission duration, the first sending time slots offset and first time slot in first message obtain
The step of very first time adjustment amount, includes：
According to the first message include first send duration, the first sending time slots offset, first time slot and
The first crystal oscillator deviation time obtains very first time adjustment amount；
The second transmission duration, the second sending time slots offset and second time slot in second message obtain
The step of second time adjustment amount, includes：
Second in second message sends duration, the second sending time slots offset, second time slot and institute
State the second crystal oscillator deviation time and obtain the second time adjustment amount.
In the preferred embodiment, in above-mentioned time synchronized method of adjustment, when the described first transmission main frame
During label minimum, after second Receiving Host receives the second message, methods described also includes：
Second Receiving Host judges whether the main frame has carried out time adjustment, if so, then second Receiving Host
No longer adjustment time；
Second Receiving Host judges whether the label of second Receiving Host is less than described second and sends main frame
Label, if so, then second Receiving Host no longer adjusts the time of second Receiving Host.
In the preferred embodiment, in above-mentioned time synchronized method of adjustment, first sends main frame corresponding
The step of sending the first message to the first Receiving Host in first time slot includes：
First sends main frame sends the first report in corresponding first time slot at interval of preset duration to the first Receiving Host
Text, wherein, the preset duration is more than the sending time slots sum of the multiple main frame.
The present invention also provides a kind of wireless communication system, including multiple main frames, and the corresponding label of each main frame is each described
Main frame simultaneously sorts according to label size, and each main frame is at least covered with the next main frame adjacent with main frame label sequence；
First sends main frame, for sending the first message to the first Receiving Host in corresponding first time slot, wherein, it is more
The main frame that label ranks the first in individual main frame is the described first transmission main frame, and described first sends at least one master of main frame covering
Machine is first Receiving Host；
First Receiving Host, for receiving first message, and according to first message and it is described first when
Gap obtains very first time adjustment amount, and the time of first Receiving Host is adjusted according to the very first time adjustment amount；
Second sends main frame, for sending the second message to the second Receiving Host in corresponding second time slot, wherein, institute
It is the described second hair that the second transmission main frame, which is stated, as the adjacent main frame of the label of the described first transmission main frame, second Receiving Host
At least one main frame for sending main frame to cover；
Second Receiving Host, for receiving second message, and according to second message and it is described second when
Gap obtains the second time adjustment amount, and the time of second Receiving Host is adjusted according to the second time adjustment amount, directly
Time to All hosts all adjusts completion.
In the preferred embodiment, in above-mentioned wireless communication system, first message includes the first hair
Duration and the first sending time slots offset are sent, second message includes the second transmission duration and the second slot offset amount；
First Receiving Host, first be additionally operable in first message send duration, the first sending time slots
Offset and first time slot obtain very first time adjustment amount, wherein, described first sends duration according to first message
Length obtain, the first slot offset amount for the starting point of delivery time and first time slot of first message difference
Value；
Second Receiving Host, second be additionally operable in second message send duration, the second sending time slots
Offset and second time slot obtain the second time adjustment amount, wherein described second sends duration according to second message
Length obtains, and the second slot offset amount is the delivery time and the difference of the starting point of second time slot of second message
Value.
In the preferred embodiment, in above-mentioned wireless communication system, first Receiving Host is stored with
One crystal oscillator deviation time, the second Receiving Host are stored with the second crystal oscillator deviation time；
First Receiving Host, be additionally operable to be included according to the first message first send duration, the first sending time slots
Offset, first time slot and the first crystal oscillator deviation time obtain very first time adjustment amount；
Second Receiving Host, second be additionally operable in second message send duration, the second sending time slots
Offset, second time slot and the second crystal oscillator deviation time obtain the second time adjustment amount.
In the preferred embodiment, in above-mentioned wireless communication system, when the label that described first sends main frame
Minimum, second Receiving Host, it is additionally operable to judge whether second Receiving Host has carried out time adjustment, if so, then not
The time of second Receiving Host is adjusted again, and judges whether the label of second Receiving Host is less than described second and sends
The label of main frame, if so, then second Receiving Host no longer adjusts the time of second Receiving Host.
In the preferred embodiment, in above-mentioned wireless communication system, the first transmission main frame is additionally operable to often
It is spaced preset duration and sends the first message to the first Receiving Host in corresponding first time slot, wherein, the preset duration is big
In the sending time slots sum of the multiple main frame.
A kind of time synchronized method of adjustment provided in an embodiment of the present invention and wireless communication system, the time synchronized adjustment
Method is applied to the wireless communication system for including multiple main frames.The corresponding label of each main frame, each main frame according to
Label size sorts, and each main frame at least exists covered with next main frame adjacent with main frame label sequence, the first transmission main frame
The first message is sent to the first Receiving Host in corresponding first time slot, wherein, the main frame that label ranks the first in multiple main frames
Main frame is sent for described first, the described first at least one main frame for sending main frame covering is first Receiving Host, described
First Receiving Host receives first message, and obtains very first time adjustment according to first message and first time slot
Amount, first Receiving Host adjust the time of first Receiving Host according to the very first time adjustment amount, and second sends
Main frame sends the second message in corresponding second time slot to the second Receiving Host, wherein, the second transmission main frame is described
First sends the adjacent main frame of label of main frame, and second Receiving Host is described second to send at least one of main frame covering
Main frame, second Receiving Host receive second message, and obtain the according to second message and second time slot
Two time adjustment amounts, second Receiving Host according to the second time adjustment amount adjust second Receiving Host when
Between, all adjust completion up to the time of All hosts.By above-mentioned setting so that the time synchronized method of adjustment is applied to institute
When stating wireless communication system, without set specific equipment or node i.e. can be achieved accurate pair when.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is a kind of connection block diagram of wireless communication system provided in an embodiment of the present invention.
Fig. 2 is a kind of schematic flow sheet of method for synchronizing time provided in an embodiment of the present invention.
Fig. 3 is time slot distribution map corresponding to a kind of main frame provided in an embodiment of the present invention.
Fig. 4 is a kind of another schematic flow sheet of method for synchronizing time provided in an embodiment of the present invention.
Icon：10- wireless communication systems；100- main frames.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
As shown in figure 1, being a kind of wireless communication system 10 provided by the invention, the wireless communication system 10 includes multiple
Main frame 100, each main frame 100 according to being corresponding with a label respectively, and each main frame 100 sorts according to label size,
Each main frame 100 is at least covered with the next main frame 100 adjacent with the label of main frame 100 sequence.
Wherein, it can also be multiple that other main frames 100 that each main frame 100 covers, which can be one, when each main frame 100
When other main frames 100 of covering are multiple, the label sequence of the plurality of main frame 100 can be continuous or interval,
It is not especially limited herein.
Incorporated by reference to Fig. 2, Fig. 2 is a kind of time synchronized method of adjustment that invention provides, applied to above-mentioned radio communication system
System 10, methods described are included with six steps of S110-S160：
S110：First sends main frame sends the first message in corresponding first time slot to the first Receiving Host, wherein, it is more
The main frame 100 that label ranks the first in individual main frame 100 is the described first transmission main frame, and described first sends main frame covering at least
One main frame 100 is first Receiving Host.
Wherein, the first transmission main frame can be the minimum main frame 100 of label or the main frame of label maximum
100, to send main frame be the minimum main frame 100 of label when described first, then each main frame 100 according to label size order side
Formula is that each main frame 100 is arranged according to ascending order.When the described first transmission main frame is the maximum master of label
Machine 100, then each main frame 100 is each main frame 100 in the way of label size sorts according to descending order
Arranged.In the present embodiment, illustrated so that each main frame 100 is arranged according to order from small to large as an example.
S120：First Receiving Host receives first message, and according to first message and it is described first when
Gap obtains very first time adjustment amount.
Optionally, in the present embodiment, first message includes the first transmission duration and the skew of the first sending time slots
Amount.The first transmission duration obtains according to the length computation of first message, and the first slot offset amount is described the
The delivery time of one message and the difference of the first time slot starting point.It is described that first time slot is obtained according to first message
The step of adjustment amount, includes：First in first message sends duration, the first sending time slots offset and described first
Time slot obtains very first time adjustment amount.
S130：First Receiving Host according to the very first time adjustment amount adjust first Receiving Host when
Between.
By above-mentioned setting so that the All hosts 100 of the first transmission main frame covering all carry out timing, so that timing
The time that the time of main frame 100 afterwards sends main frame with described first is identical.
S140：Second sends main frame sends the second message in corresponding second time slot to the second Receiving Host, wherein, institute
The second transmission main frame is stated as the described first adjacent main frame 100 of label for sending main frame, second Receiving Host is described the
Two send at least one main frame 100 of main frame covering.
Wherein, second time slot is the time slot adjacent with first time slot, and the duration of first time slot and institute
The duration for stating the second time slot is identical.
S150；Second Receiving Host receives second message, and according to second message and it is described second when
Gap obtains the second time adjustment amount.
Optionally, in the present embodiment, second message includes the second transmission duration and the skew of the second sending time slots
Amount.The second transmission duration obtains according to the length computation of second message, and the second slot offset amount is described the
The delivery time of two messages and the difference of the second time slot starting point.It is described that second time slot is obtained according to second message
The step of adjustment amount, includes：Second in second message sends duration, the second sending time slots offset and described the
Two time slots obtain the second time adjustment amount.
S160：Second Receiving Host according to the second time adjustment amount adjust second Receiving Host when
Between, all adjust completion up to the time of All hosts 100.
By the above method, realize more timesharing of main frame 100 and send message, so as to interrupt quick reception, computation delay is simultaneously
Set time, the time after the timing of each main frame 100 in the wireless communication system 10 is identical.
Incorporated by reference to Fig. 3, to ensure that each main frame 100 can adjust the deadline, M sends main frame corresponding the
M messages are sent to M Receiving Hosts in M time slots, wherein, it is the label that the M-1 sends main frame that the M, which sends main frame,
Adjacent main frame, the M Receiving Hosts be the M send main frame covering at least one main frame 100, the M be more than
Integer equal to 3.
The M Receiving Hosts receive the M messages, and obtain M according to the M messages and the M time slots
Time adjustment amount.
Wherein, M messages, which include the M messages, includes M transmission durations and M sending time slots offsets.Institute
State M transmission durations to be obtained according to the length computation of the M messages, the M slot offsets amount is the hair of the M messages
Send the difference at moment and the M time slot starting points.The described the step of M time slot adjustment amounts are obtained according to the M messages
Including：M in the M messages sends duration, M sending time slots offset and the M time slots and obtains the M times
Adjustment amount.
The M Receiving Hosts adjust the time of the M Receiving Hosts according to the M times adjustment amount.
For example, when it is the 3rd transmission main frame that M, which sends main frame, after second Receiving Host completes timing, the 3rd
Send main frame and send message to the 3rd Receiving Host in corresponding 3rd time slot, wherein the 3rd sends main frame as the described second hair
The main frame 100 of the adjacent sequence of main frame is sent, the 3rd Receiving Host is the 3rd at least one main frame 100 for sending main frame covering.So that
3rd Receiving Host can adjust the time of the 3rd Receiving Host according to the 3rd message and the 3rd time slot.Wherein, described
One transmission main frame, the second transmission main frame and the 3rd transmission main frame etc. are the main frame 100 being ranked up according to label, until sequence
Message transmission is all completed for the main frame 100 at end, then completes the time to the All hosts 100 in the wireless communication system 10
Adjustment.
It should be noted that time slot corresponding to each main frame 100 is all identical, all there is central controller in each main frame 100, should
Central controller includes timer, and first Receiving Host adjusts first reception according to the very first time adjustment amount and led
The time of the timer of machine, second Receiving Host adjust determining for second Receiving Host according to the second time adjustment amount
When the device time.
Further to make the time synchronized of each main frame 100 better, optionally, in the present embodiment, described
One Receiving Host is stored with the first crystal oscillator deviation time, and the second Receiving Host is stored with the second crystal oscillator deviation time, and M receives master
Machine is stored with M crystal oscillator deviation times.Wherein, the first crystal oscillator deviation time is timer in first Receiving Host
The deviation time of crystal oscillator, when the second crystal oscillator deviation time is the deviation of the crystal oscillator of timer in second Receiving Host
Between.The first transmission duration, the first sending time slots offset and first time slot in first message obtain first
The step of time adjustment amount can be：First included according to the first message sends duration, the first sending time slots offset, institute
State the first time slot and the first crystal oscillator deviation time obtains very first time adjustment amount.It is described according in second message
Second, which sends the step of duration, the second sending time slots offset and second time slot obtain the second time adjustment amount, to be：
Second in second message sends duration, the second sending time slots offset, second time slot and second crystalline substance
The deviation time that shakes obtains the second time adjustment amount.It is inclined that the M in the M messages sends duration, M sending time slots
The step of shifting amount and the M time slots obtain M time adjustment amounts can be：When M in the M messages is sent
Length, M sending time slots offset, the M time slots and the M crystal oscillator deviation times obtain M time adjustment amounts.
It should be noted that because in the wireless communication system 10, the crystal oscillator deviation of each main frame 100 is different, can
During be calculated the crystal oscillator deviation of Receiving Host to the crystal oscillator deviation of Receiving Host according to the crystal oscillator deviation for sending main frame
Between, so that described second sends main frame and second Receiving Host as an example, second message includes the second transmission main frame
Crystal oscillator deviation, second Receiving Host obtain the described second crystal oscillator deviation for sending main frame and with second Receiving Host
Crystal oscillator deviation is compared, if the described second crystal oscillator deviation for sending main frame is more than the crystal oscillator deviation of first main frame, institute
The second crystal oscillator deviation time is stated as a negative time granularity, if the described second crystal oscillator deviation for sending main frame is less than described first
The crystal oscillator deviation of main frame, then the second crystal oscillator deviation time is a positive time granularity.By the above method with further
Ensure the time synchronized of each main frame 100 in the wireless communication system 10.By the above method, it is inclined to realize dynamic micro-adjustments crystal oscillator
Difference, error problem during reducing existing pair of each main frame 100.
Incorporated by reference to Fig. 4, to avoid one or more main frames being present in the multiple main frames 100 in the wireless communication system 10
100 after a timing is carried out, continue timing after message is received again, cause the complicated feelings of the timing of main frame 100
Condition.Optionally, in the present embodiment, when the described first transmission main frame is marked as minimum, methods described also includes walking
Suddenly：
Step S170；Second Receiving Host judges whether the main frame has carried out time adjustment, if so, then described second
Receiving Host no longer adjustment time.
Step S180；Second Receiving Host judges whether the label of second Receiving Host is less than the described second hair
The label of main frame is sent, if so, then second Receiving Host no longer adjusts the time of second Receiving Host.
In addition, the M Receiving Hosts judge whether the main frame has carried out time adjustment, if so, then the M receives master
Machine no longer adjustment time.
The M Receiving Hosts judge whether the label of the M Receiving Hosts is less than the mark that the M sends main frame
Number, if so, then the M Receiving Hosts no longer adjust the time of the M Receiving Hosts.
By the above method with effectively avoid adjusted out-of-date and be ordered as first place main frame 100 carry out again when
Between situation about adjusting.
To ensure the wireless communication system 10 in day part, each time of main frame 100 can keep synchronous, optionally,
In the present embodiment, described first the side that main frame sends the first message in corresponding first time slot to the first Receiving Host is sent
Method can be：First sends main frame sends the first report in corresponding first time slot at interval of preset duration to the first Receiving Host
Text, wherein, the preset duration is more than the sending time slots sum of the multiple main frame 100.
By the above method, each main frame 100 in the wireless communication system 10 is set time with property performance period, with
Effectively the problem of avoiding long-time frequency drift, and pair when progress can reach Microsecond grade.And without separately set specific interface and
Hardware device.
The present invention also provides a kind of wireless communication system 10, and the wireless communication system 10 includes multiple main frames 100, each
The corresponding label of main frame 100, each main frame 100 simultaneously sort according to label size, each main frame 100 at least covered with this
The adjacent next main frame 100 of the label of main frame 100 sequence.
First sends main frame, for sending the first message to the first Receiving Host in corresponding first time slot, wherein, it is more
The main frame 100 that label ranks the first in individual main frame 100 is the described first transmission main frame, and described first sends main frame covering at least
One main frame 100 is first Receiving Host.
First Receiving Host, for receiving first message, and according to first message and it is described first when
Gap obtains very first time adjustment amount, and the time of first Receiving Host is adjusted according to the very first time adjustment amount.
Second sends main frame, for sending the second message to the second Receiving Host in corresponding second time slot, wherein, institute
The second transmission main frame is stated as the described first adjacent main frame 100 of label for sending main frame, second Receiving Host is described the
Two send at least one main frame 100 of main frame covering.
Second Receiving Host, for receiving second message, and according to second message and it is described second when
Gap obtains the second time adjustment amount, and the time of second Receiving Host is adjusted according to the second time adjustment amount, directly
Time to All hosts 100 all adjusts completion.
By above-mentioned setting with the time synchronized of each main frame 100 in wireless communication system described in effective guarantee 10.And
During each main frame 10 carries out time synchronized, without specific equipment or interface, so that the time synchronized adjustment side
The practicality of method is stronger, and when applied to the wireless communication system 10, is effectively saved the wireless communication system 10
Cost.
Optionally, in the present embodiment, first message includes the first transmission duration and the skew of the first sending time slots
Amount, second message include the second transmission duration and the second slot offset amount.
First Receiving Host, first be additionally operable in first message send duration, the first sending time slots
Offset and first time slot obtain very first time adjustment amount, wherein, described first sends duration according to first message
Length obtain, the first slot offset amount for the starting point of delivery time and first time slot of first message difference
Value.
Second Receiving Host, second be additionally operable in second message send duration, the second sending time slots
Offset and second time slot obtain the second time adjustment amount, wherein described second sends duration according to second message
Length obtains, and the second slot offset amount is the delivery time and the difference of the starting point of second time slot of second message
Value.
Further to make the time synchronized of each main frame 100 in the wireless communication system 10, optionally, in this implementation
In example, first Receiving Host is stored with the first crystal oscillator deviation time, when the second Receiving Host is stored with the second crystal oscillator deviation
Between.First Receiving Host, be additionally operable to be included according to the first message first send duration, the skew of the first sending time slots
Amount, first time slot and the first crystal oscillator deviation time obtain very first time adjustment amount.Second Receiving Host, also
Duration, the second sending time slots offset, second time slot and described the are sent for second in second message
Two crystal oscillator deviation times obtain the second time adjustment amount.
Carried out to avoid one or more main frames 100 in the multiple main frames 100 in the wireless communication system 10 being present
After timing, continue timing after message is received again, cause the complicated situation of the timing of main frame 100.In this reality
Apply in example, when the label minimum that described first sends main frame, second Receiving Host, be additionally operable to judge that described second receives
Whether main frame has carried out time adjustment, if second Receiving Host has carried out time adjustment, no longer adjusts second reception
The time of main frame, and judge whether the label of second Receiving Host is less than the described second label for sending main frame, if so,
Then second Receiving Host no longer adjusts the time of second Receiving Host.
To ensure the wireless communication system 10 in day part, each time of main frame 100 can keep synchronous, optionally,
In the present embodiment, the first transmission main frame is additionally operable to receive to first in corresponding first time slot at interval of preset duration
Main frame sends the first message, wherein, the preset duration is more than the sending time slots sum of the multiple main frame 100.
To sum up, a kind of time synchronized method of adjustment provided by the invention and wireless communication system 10, the radio communication system
System 10 includes multiple main frames 100, and first sends main frame sends the first message in corresponding first time slot to the first Receiving Host,
First Receiving Host receives first message, and obtains the very first time according to first message and first time slot
Adjustment amount, first Receiving Host adjust the time of first Receiving Host according to the very first time adjustment amount.Second
Send main frame and send the second message to the second Receiving Host in corresponding second time slot, described in second Receiving Host receives
Second message, and the second time adjustment amount, second Receiving Host are obtained according to second message and second time slot
The time of second Receiving Host is adjusted according to the second time adjustment amount, until the time of All hosts 100 all adjusts
Complete.By above-mentioned setting so that in the wireless communication system 10 each main frame 100 time synchronized, it is and specific without setting
Hardware or interface.The time synchronized of each main frame 100 is further ensured by obtaining the crystal oscillator time deviation of each main frame 100
Property.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of time synchronized method of adjustment, applied to the wireless communication system including multiple main frames, each main frame is corresponding one
Label, each main frame sort according to label size, and each main frame is at least adjacent next covered with being sorted with the main frame label
Main frame, it is characterised in that methods described includes：
First sends main frame sends the first message in corresponding first time slot to the first Receiving Host, wherein, in multiple main frames
The main frame that label ranks the first is the described first transmission main frame, and the described first at least one main frame for sending main frame covering is described
First Receiving Host；
First Receiving Host receives first message, and obtains first according to first message and first time slot
Time adjustment amount；
First Receiving Host adjusts the time of first Receiving Host according to the very first time adjustment amount；
Second sends main frame sends the second message in corresponding second time slot to the second Receiving Host, wherein, second hair
Sending main frame, second Receiving Host is that the described second transmission main frame covers for the adjacent main frame of the label of the described first transmission main frame
At least one main frame of lid；
Second Receiving Host receives second message, and obtains second according to second message and second time slot
Time adjustment amount；
Second Receiving Host adjusts the time of second Receiving Host according to the second time adjustment amount, until all
The time of main frame all adjusts completion.
2. time synchronized method of adjustment according to claim 1, it is characterised in that first message includes the first hair
Duration and the first sending time slots offset are sent, second message includes the second transmission duration and the second slot offset amount；
The step of obtaining very first time adjustment amount according to first message and first time slot includes：
The first transmission duration, the first sending time slots offset and first time slot in first message obtain first
Time adjustment amount, wherein, described first sends duration obtains according to the length of first message, the first slot offset amount
For the delivery time and the difference of the starting point of first time slot of first message；
The step of obtaining the second time adjustment amount according to second message and second time slot includes：
The second transmission duration, the second sending time slots offset and second time slot in second message obtain second
Time adjustment amount, wherein described second sends duration according to the acquisition of the length of second message, the second slot offset amount
For the delivery time and the difference of the starting point of second time slot of second message.
3. time synchronized method of adjustment according to claim 2, it is characterised in that first Receiving Host is stored with
One crystal oscillator deviation time, the second Receiving Host are stored with the second crystal oscillator deviation time；
The first transmission duration, the first sending time slots offset and first time slot in first message obtain first
The step of time adjustment amount, includes：
First included according to the first message sends duration, the first sending time slots offset, first time slot and described
First crystal oscillator deviation time obtains very first time adjustment amount；
The second transmission duration, the second sending time slots offset and second time slot in second message obtain second
The step of time adjustment amount, includes：
Second in second message sends duration, the second sending time slots offset, second time slot and described the
Two crystal oscillator deviation times obtain the second time adjustment amount.
4. time synchronized method of adjustment according to claim 1, it is characterised in that when the label that described first sends main frame
When minimum, methods described also includes：
Second Receiving Host judges whether the main frame has carried out time adjustment, if so, then second Receiving Host is no longer
Adjustment time；
Second Receiving Host judges whether the label of second Receiving Host is less than the described second label for sending main frame,
If so, then second Receiving Host no longer adjusts the time of second Receiving Host.
5. time synchronized method of adjustment according to claim 1, it is characterised in that first sends main frame corresponding first
The step of sending the first message to the first Receiving Host in time slot includes：
First sends main frame sends the first message in corresponding first time slot at interval of preset duration to the first Receiving Host, its
In, the preset duration is more than the sending time slots sum of the multiple main frame.
A kind of 6. wireless communication system, it is characterised in that including multiple main frames, the corresponding label of each main frame, each master
Machine simultaneously sorts according to label size, and each main frame is at least covered with the next main frame adjacent with main frame label sequence；
First sends main frame, for sending the first message to the first Receiving Host in corresponding first time slot, wherein, Duo Gezhu
The main frame that label ranks the first in machine is the described first transmission main frame, and at least one main frame of the first transmission main frame covering is
First Receiving Host；
First Receiving Host, obtained for receiving first message, and according to first message and first time slot
To very first time adjustment amount, and the time according to very first time adjustment amount adjustment first Receiving Host；
Second sends main frame, for sending the second message to the second Receiving Host in corresponding second time slot, wherein, described the
Two send main frame as the adjacent main frame of the label of the described first transmission main frame, and second Receiving Host is that the described second transmission is led
At least one main frame of machine covering；
Second Receiving Host, obtained for receiving second message, and according to second message and second time slot
To the second time adjustment amount, and the time according to the second time adjustment amount adjustment second Receiving Host, until institute
The time for having main frame all adjusts completion.
7. wireless communication system according to claim 6, it is characterised in that when first message includes the first transmission
Long and the first sending time slots offset, second message include the second transmission duration and the second slot offset amount；
First Receiving Host, it is additionally operable to first in first message and sends duration, the skew of the first sending time slots
Amount and first time slot obtain very first time adjustment amount, wherein, described first sends length of the duration according to first message
Degree obtains, and the first slot offset amount is the delivery time and the difference of the starting point of first time slot of first message；
Second Receiving Host, it is additionally operable to second in second message and sends duration, the skew of the second sending time slots
Amount and second time slot obtain the second time adjustment amount, wherein described second sends length of the duration according to second message
Obtain, the second slot offset amount is the delivery time and the difference of the starting point of second time slot of second message.
8. wireless communication system according to claim 7, it is characterised in that it is brilliant that first Receiving Host is stored with first
Shake deviation time, and the second Receiving Host is stored with the second crystal oscillator deviation time；
First Receiving Host, be additionally operable to be included according to the first message first send duration, the skew of the first sending time slots
Amount, first time slot and the first crystal oscillator deviation time obtain very first time adjustment amount；
Second Receiving Host, it is additionally operable to second in second message and sends duration, the skew of the second sending time slots
Amount, second time slot and the second crystal oscillator deviation time obtain the second time adjustment amount.
9. wireless communication system according to claim 6, it is characterised in that the label that main frame is sent when described first is minimum
When, second Receiving Host, it is additionally operable to judge whether second Receiving Host has carried out time adjustment, if so, then no longer
The time of second Receiving Host is adjusted, and judges whether the label of second Receiving Host is less than described second and sends master
The label of machine, if so, then second Receiving Host no longer adjusts the time of second Receiving Host.
10. wireless communication system according to claim 6, it is characterised in that the first transmission main frame is additionally operable to every
The first message is sent to the first Receiving Host in corresponding first time slot every preset duration, wherein, the preset duration is more than
The sending time slots sum of the multiple main frame.
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