CN102364982A - Method for synchronizing groups and terminal in mixed self-organizing network - Google Patents
Method for synchronizing groups and terminal in mixed self-organizing network Download PDFInfo
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- CN102364982A CN102364982A CN2011103883370A CN201110388337A CN102364982A CN 102364982 A CN102364982 A CN 102364982A CN 2011103883370 A CN2011103883370 A CN 2011103883370A CN 201110388337 A CN201110388337 A CN 201110388337A CN 102364982 A CN102364982 A CN 102364982A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/002—Mutual synchronization
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Abstract
The invention provides a method for synchronizing groups in a mixed self-organizing network. By using the method, reference time is adjusted into the same reference time of a synchronized group. The method provided in the invention is characterized by: determining whether there is difference between the reference time of a first edge terminal itself and the reference time of a second edge terminal according to a received signal which is used to identify time information and is sent by the second edge terminal by the first edge terminal; if there is the difference, determining that the first edge terminal and the second edge terminal respectively belong to different synchronized groups and determining whether the reference time difference exceeds a setting scope according to the signal which is used to identify the time information; if the first edge terminal determines that the reference time difference exceeds the setting scope, determining whether the first edge terminal itself needs to be adjusted according to a setting rule; if the first edge terminal determines to be adjusted, adjusting the reference time of the first synchronized group into the reference time of the second synchronized group. The invention also provides a terminal corresponding to the method.
Description
Technical field
The present invention relates to communication technical field, relate in particular in a kind of mixing ad-hoc network method for synchronous and terminal between the crowd.
Background technology
Mix the MANET network and be by UTC (Universal Time Chiming, generalized time is coordinated) time service and do not have the ad-hoc network of the terminal composition of UTC time service.For example: the communication of car car, bus or train route communication are that main " car networking " is exactly mix the MANET network a kind of.
In mixing the MANET network, the overlayable retaining zone in each terminal is limited.If first terminal is in the locking range at second terminal, then first terminal and second terminal can be through adjustment synchronously, and be consistent with being adjusted into fiducial time at two terminals.If first terminal is outside the retaining zone at second terminal, first terminal can can't obtain the pilot code that send at second terminal because of the weak output signal at received second terminal, then causes two terminals can't be synchronous.We are a synchronic group with synchronous terminal definitions a fiducial time.In mixing the MANET network, there are a plurality of different synchronic groups.And the terminal is to have ambulantly, and the terminal in the different synchronic groups may get into retaining zone separately, and is as shown in Figure 1, and the terminal in the synchronic group 11 gets into temporal information range of transmission 13 each other with terminal (3 and 5) in the synchronic group 12.But, belong to the different communication between terminals of synchronic group problem may take place because the fiducial time of distinct group is different.So, need be adjusted to a synchronous base time fiducial time at the terminal of distinct group, form a bigger synchronic group, to realize the distinct group communication between terminals.
Summary of the invention
The invention provides in a kind of mixing ad-hoc network method for synchronous and relevant terminal between the crowd; After making that the terminal that belongs to different synchronic groups gets in the retaining zone each other; Can be adjusted into unanimity the fiducial time of difference synchronic group, form one and comprise the former difference bigger synchronic group of synchronic group.Method provided by the invention is:
The signal that is used for identified time information that first edge termination sends according to second edge termination that receives confirms whether the fiducial time of fiducial time and second edge termination of self is variant;
If first edge termination confirms that fiducial time is variant, confirm that then first edge termination belongs to different synchronic groups respectively with second edge termination; And confirm according to the signal that is used for identified time information fiducial time, whether difference exceeded setting range;
Said first edge termination confirms that fiducial time, difference exceeded setting range, and then whether needs are adjusted according to the rule judgment of setting self;
If said first edge termination self need to confirm adjustment, first under then will said first edge termination has been adjusted into second affiliated fiducial time of synchronic group of said second edge termination the fiducial time of synchronic group.
The present invention also provides in a kind of mixing ad-hoc network synchronous terminal between the crowd, and this terminal comprises:
Fiducial time, the difference determination module was used to receive the signal that is used for identified time information that second edge termination sends, and confirmed according to the signal of said identified time information whether the fiducial time of fiducial time and second edge termination of self is variant; If confirm that fiducial time is variant, confirm that then first edge termination belongs to different synchronic groups respectively with second edge termination; Confirm fiducial time, whether difference exceeded setting range;
Set the rule judgment module, be used for whether needs are adjusted according to the rule judgment of setting self;
Fiducial time, adjusting module self need to confirm adjustment if be used for said first edge termination, and first under then will said first edge termination has been adjusted into second affiliated fiducial time of synchronic group of said second edge termination the fiducial time of synchronic group.
Technical scheme provided by the invention, earlier by edge termination confirm two differences under the edge termination difference fiducial time between the synchronic group whether surpass the scope of setting.Like the scope confirm to surpass set again according to corresponding rule judgment whether to adjusting the fiducial time of the synchronic group under the edge termination self.Two edge terminations all carry out foregoing definite and judgement; There is an edge termination all to adjust according to the rule of setting then to the fiducial time at terminal in the synchronic group under self; And, reached an agreement the fiducial time of synchronic group for final two being adjusted under another terminal the fiducial time of synchronic group under self the fiducial time of synchronic group.
Description of drawings
Fig. 1 is an ad-hoc network of the present invention synchronic group sketch map;
Fig. 2 is a method for synchronous flow chart between embodiment of the invention crowd;
Fig. 3 has been adjusted into second method flow diagram of the fiducial time of synchronic group for the embodiment of the invention fiducial time of synchronic group with first;
Fig. 4 is a specific embodiment of the invention method flow diagram;
Fig. 5 is the structural representation of embodiment of the invention edge termination.
Embodiment
When belonging to two differences the edge termination of synchronic group got into retaining zone each other, for making two terminal communications accessible, need with two edge terminations respectively under difference synchronic group to carry out fiducial time synchronous.Below in conjunction with the description of drawings embodiment of the invention the affiliated respectively different synchronic groups of two edge terminations are carried out synchronous method fiducial time.As shown in Figure 2, the present embodiment method that difference synchronic group is synchronous is:
Step S201, first edge termination receive the signal that is used for identified time information that second edge termination sends.
In step S201, two edge terminations are in the signal spread scope of the other side's identified time information the time, and all with from as first edge termination, recognizing each other the other side is second edge termination, and receives the signal that is used for identified time information that sends each other.
Step S202, the signal that is used for identified time information that first edge termination sends according to second edge termination that receives confirm whether the fiducial time of fiducial time and second edge termination of self is variant.
When first edge termination receive that second edge termination sends be used for the signal of identified time information the time, to judge whether the fiducial time of first edge termination self and first edge termination variant through the signal that is used for identified time information earlier.
Step S203; If first edge termination confirms that fiducial time is variant; Confirm that then first edge termination belongs to different synchronic groups respectively with second edge termination, and confirm according to the signal that is used for identified time information fiducial time, whether difference exceeded setting range.
In step S203, two terminals confirm that all fiducial time each other is variant, can confirm that then first edge termination and second edge termination belong to different synchronic groups.Two terminals also all judge respectively first synchronic group and second difference fiducial time of synchronic group whether exceed setting range.Do not have difference if confirm fiducial time each other, can confirm that then two terminals just belonged to same synchronic group originally, no longer need carry out between the crowd synchronous.
Step S204, first edge termination confirm that fiducial time, difference exceeded setting range, and then whether needs are adjusted according to the rule judgment of setting self.
If confirm that fiducial time, difference exceeded setting range, then continue whether will belong to and adjust the fiducial time of synchronic group this terminal according to the rule judgment of setting.
Step S205 if first edge termination self need to confirm adjustment, then is adjusted into second under second edge termination fiducial time of synchronic group with first under first edge termination fiducial time of synchronic group.
Through step S205, have one in two terminals and it is belonged to adjust the fiducial time of synchronic group, will be adjusted to two another in synchronic group fiducial times of synchronic group fiducial time, so that two different synchronic groups are synchronous.
More excellent ground, the signal of identified time information is a pilot signal.In ad-hoc network, carry information fiducial time by pilot signal usually.
More excellent ground, fiducial time difference exceed that setting range is that super frame period is different, the superframe start bit is different or synchronism deviations greater than the number of chips of setting.The condition that super frame period is different, the different perhaps synchronism deviations of superframe start bit exceed setting range for the judgment standard time difference greater than the number of chips of setting.As long as satisfy wherein any condition, just confirm that fiducial time, difference exceeded setting range.
More excellent ground, number of chips is set according to the protection of pilot code and data division at interval, perhaps gets into the periodicity that can adjust synchronously before the 1 jumping scope according to first edge termination and multiply by the setting of maximum adjustment step-length.The quantity of chip can be set according to the protection of pilot code and data division at interval in the present embodiment, also can get into the periodicity that can adjust synchronously before the 1 jumping scope according to first edge termination and multiply by the setting of maximum adjustment step-length.First kind of setting means relatively simplified, and can easier set out scope, and second kind of setting means be then through the calculating of correlative, more accurate setting range.
More excellent ground, if confirm that fiducial time, difference did not exceed setting range, belong to first synchronic group first edge termination with belong to second second edge termination of synchronic group adjust synchronously through the method for synchronization at a slow speed under the synchronous regime.Confirm that fiducial time, difference did not exceed the processing mode of setting range if present embodiment also provides, promptly adjust synchronously through the method for synchronization at a slow speed under the synchronous regime.Two nonsynchronous terminals are formed and are together gone on foot group time, promptly carry out synchronously through the method for synchronization at a slow speed.
More excellent ground, the rule of setting is: if first the synchronization level of synchronic group be lower than second synchronization level of synchronic group; If perhaps first the synchronization level of synchronic group the synchronization level of synchronic group is identical with second, and first the edge termination quantity that comprises of synchronic group be less than the second edge termination quantity that comprises of synchronic group; If perhaps first the synchronization level of synchronic group the synchronization level of synchronic group is identical with second; And first the edge termination quantity that comprises of synchronic group the edge termination quantity that comprises of synchronic group is identical with second, but first was later than for second fiducial time of synchronic group the fiducial time of synchronic group.If meet wherein a kind of condition of setting three kinds of conditions in the rule, then first edge termination self need can confirm adjustment.
More excellent ground, the synchronization level of synchronic group is group the highest synchronization level at all terminals that comprise, the synchronization level at terminal is divided according to the terminal synchronizes ability.The terminal is because the difference of time service foundation, the synchronizing capacity of self, and promptly accuracy is different, so according to the levels of precision of time service foundation the synchronizing capacity at terminal is divided.
After confirming needs are carried out adjusting fiducial time synchronic group; Just need specifically adjust the fiducial time of synchronic group, more excellent ground has been adjusted into second method of the fiducial time of synchronic group the fiducial time of synchronic group with first; As shown in Figure 3, comprising:
Step S301, first edge termination according to time adjustment message to adjusting fiducial time, and the first other-end transmitting time adjustment message in the synchronic group under it.
First edge termination need be adjusted the fiducial time of himself; Be adjusted into for second fiducial time of synchronic group; Also need adjust under first edge termination fiducial time of synchronic group simultaneously; Therefore, first edge termination also can be under it other-end transmitting time adjustment message in synchronic group.
Step S302, other-end time of reception adjustment message, and according to time adjustment message to adjusting fiducial time.
Other-end in first synchronic group under first edge termination except that first edge termination can be adjusted message by time of reception, and adjusts the fiducial time to self according to time adjustment message.
More excellent ground, time adjustment message comprises: fiducial time adjustment amount and object synchronization grade.Fiducial time, adjustment amount and object synchronization grade were to adjusting necessary information fiducial time; The synchronization level that amount that fiducial time, but the adjustment amount indicating terminal need be adjusted fiducial time and object synchronization grade are indicated second synchronic group, the target complex of second synchronic group for first synchronic group under first edge termination is adjusted into.
More excellent ground, fiducial time, adjustment amount was first synchronic group and second synchronic group difference fiducial time, perhaps be first synchronic group and second difference fiducial time of synchronic group deduct first synchronic group estimate adjustment amount inter-sync fiducial time; Said object synchronization grade is second synchronization level of synchronic group.Fiducial time, adjustment amount can directly be first synchronic group and second synchronic group difference fiducial time, like this with first synchronic group according to after fiducial time, difference was adjusted, be and second fiducial time of synchronic group.If but when processing time adjustment message; Time adjustment message synchronous at a slow speed between group inside terminals is handled at the terminal at the same time; Then need the time adjustment amount of synchronization basic standard at a slow speed between the inside terminals be deducted; Promptly deduct first synchronic group estimate adjustment amount inter-sync fiducial time, more accurate through the time adjustment that back kind time adjustment amount carries out.
More excellent ground, time adjustment message also comprises: adjust in number of sub frames, adjustment designated time and the target super frame period one or more relatively.Comprise that these data can be more accurately to adjusting fiducial time.
Because one has had a plurality of terminals in the synchronic group; And might meet as edge termination and other a plurality of edge terminations of a plurality of groups at a plurality of terminals of synchronization; So can occur one a plurality of edge terminations in the synchronic group after judging; All confirm and in the crowd, transmitting time to adjust message, so the transmission of a plurality of message of synchronization can cause the resource collision.Be head it off, present embodiment provides a technical scheme more excellently, promptly first edge termination under it first in the synchronic group before the other-end transmitting time adjustment message, first edge termination is adjusted the transmission of message time of delay.A plurality of like this message can stagger transmission in time and avoid the resource collision.
More excellent ground postpones in the integer sub-frame, evenly to distribute.A plurality of message evenly are distributed as a kind of specific practice with the message transmission lag in the integer sub-frame.
In the technical scheme of present embodiment; Two terminals of meeting get in the signal range of receiving of identified time information each other; Through differentiate under two terminals difference the difference of the fiducial time of synchronic group whether surpass the scope of setting, then need to adjust under which terminal in two terminals fiducial time at all terminals among the crowd as surpassing according to the rule judgment needs of setting.With all be adjusted into fiducial time at all terminals in the synchronic group of needs adjustment another the benchmark of synchronic group the time after; Under two terminals synchronic group fiducial time identical; Formed a bigger synchronic group, can avoid two the terminal in the synchronic group cause garble because of fiducial time is different.
The present invention also provides as the other-end in the synchronic group, in time of reception adjustment message, and according to the scheme of time adjustment message to adjusting fiducial time.Therefore, more excellent ground, in the present embodiment with first the other-end in the synchronic group will be adjusted into for second fiducial time of synchronic group fiducial time according to said time adjustment message, specifically comprise:
Judge the time adjustment message receive whether be under the terminal the terminal in the synchronic group send, and whether sense terminals has unenforced time adjustment message;
If the time that receives adjustment message under the terminal the terminal in the synchronic group send, then abandon the time adjustment message that receives;
If the time that receives adjustment message be under the terminal the terminal in the synchronic group send, and the terminal do not have unenforced time adjustment message, then according to said time adjustment message adjustment fiducial time, and preserves said time adjustment message;
If the time that receives adjustment message be under the terminal the terminal in the synchronic group send; And there is unenforced time adjustment message at the terminal; The object synchronization grade of then more said time adjustment message and adjustment of unenforced time message; If the object synchronization grade of the time that receives adjustment message is higher than the goal gradient of unenforced time adjustment message; Then carry out adjustment fiducial time, preserve the time adjustment message that receives and abandon unenforced time adjustment message according to the time adjustment message that receives; If the object synchronization grade of the time that receives adjustment message is not higher than the target of unenforced time adjustment message, then abandon the time adjustment message that receives, wherein, said object synchronization grade is second synchronization level of synchronic group.
After the terminal receives time adjustment message, need whether judgement time adjustment message is that other-end sends in the synchronic group under this terminal, need judge also simultaneously whether this terminal inner also has other unenforced time adjustment message.If should adjust message the time is not that other-end sends in the synchronic group under this terminal, then need not handle this time adjustment message, can it be abandoned; If this information is that other-end sends in the synchronic group under this terminal, and also has only this information in this terminal, then carries out the time adjustment and get final product according to this information.
If this information is that other-end sends in the synchronic group under this terminal, but also have unenforced other times adjustment message in this terminal, then need all time adjustment message be compared.If the object synchronization grade of the time that receives adjustment message is higher than the object synchronization grade of the Pending The Entry Into Force time adjustment message in the terminal, then message is adjusted to adjusting fiducial time according to this time in the terminal.If the object synchronization grade of the time that receives adjustment message is not higher than the synchronization level of Pending The Entry Into Force time adjustment message in the terminal, then need deal with, and can directly it be abandoned this time that receives adjustment message.The object synchronization grade is time adjustment a kind of information that message contained; The synchronization level of this message identification target complex; Target complex then is with another synchronic group of being adjusted into of synchronic group under this terminal, and the object synchronization grade i.e. another synchronization level of synchronic group for this reason.
The time adjustment message that the object synchronization grade is low abandons the time adjustment message that can help to reduce in the crowd no actual use, alleviates the burden of terminal to time adjustment Message Processing.For the time adjustment message that needs are handled, also need be preserved simultaneously.
After the processing of having accomplished time message; For fear of taking place have the terminal not receive time adjustment message in the synchronic group under the terminal; So more excellent ground; Carry out after adjustment fiducial time according to time adjustment message, the time adjustment message of being preserved also need be transmitted in the terminal in the terminal that receives time adjustment message in affiliated crowd.Can guarantee that to the forwarding of time adjustment message effective time adjustment message is sent under the terminal all terminals in the synchronic group like this, make consistent adjustment fiducial time at all terminals.
Other-end is after receiving time adjustment message in the synchronic group that provides in the present embodiment; Need to judge that whether this time adjustment message be terminal transmission in the synchronic group under the terminal; And if this terminal has only this adjustment message time, then according to this time adjustment message to adjusting the fiducial time at this terminal; If also have other unenforced time adjustment message; Whether the goal gradient of the time adjustment message that then need this time receive is higher than the goal gradient of unenforced time adjustment message in the terminal, adjusts message to adjusting the fiducial time at this terminal if be higher than just according to the time that receives.Adopt technical scheme in the present embodiment can guarantee the terminal correct, easy to adjusting self fiducial time.Finally reach under this terminal the effect consistent fiducial time of synchronic group with the fiducial time of target complex.
In the present embodiment, belong to different when met in the terminal of synchronic group when two, two terminals begin to judge whether and need adjust fiducial time, and judge by which terminal other-end in the synchronic group under it is carried out adjustment fiducial time.Behind the synchronic group of confirming to adjust, as triggering side, other-end transmitting time adjustment message trigger other-end is to adjusting its fiducial time in affiliated crowd by the terminal of making judgement.Other-end time of reception adjustment message; Differentiate this adjustment message time whether from the terminal that self belongs to a synchronic group together; The object synchronization grade of the message that also need confirm to receive is higher than the object synchronization grade of the existing message in terminal; The time adjustment message that satisfies aforementioned two conditions could be as the foundation of time adjustment; Time adjustment message also need preserve and transmit to this, needs among controlled crowd all terminals can both receive this time adjustment message and adjusts accordingly with the assurance time.Finally reach the two differences synchronous purpose of synchronic group.
In conjunction with Fig. 4 specific embodiment of the present invention is described.As shown in Figure 4, the flow process of present embodiment is:
Step S401, first edge termination receive the signal that is used for identified time information that second edge termination sends.
Step S402, the signal that is used for identified time information that first edge termination sends according to second edge termination that receives confirm whether the fiducial time of fiducial time and second edge termination of self is variant.
First edge termination judges whether belong to different synchronic groups with second edge termination.
Step S403; If first edge termination confirms that fiducial time is variant; Confirm that then first edge termination belongs to different synchronic groups respectively with second edge termination, and confirm according to the signal that is used for identified time information fiducial time, whether difference exceeded setting range.
The judgement of first edge termination is used for the signal of identified time information and confirms fiducial time, whether difference exceeded setting range.
Step S404, first edge termination confirm that fiducial time, difference exceeded setting range, and then whether needs are adjusted according to the rule judgment of setting self.
Rule among the step S404 does, if first the synchronization level of synchronic group be lower than second synchronization level of synchronic group; If perhaps first the synchronization level of synchronic group the synchronization level of synchronic group is identical with second, and first the edge termination quantity that comprises of synchronic group be less than the second edge termination quantity that comprises of synchronic group; If perhaps first the synchronization level of synchronic group the synchronization level of synchronic group is identical with second; And first the edge termination quantity that comprises of synchronic group the edge termination quantity that comprises of synchronic group is identical with second, but first was later than for second fiducial time of synchronic group the fiducial time of synchronic group.If meet wherein a kind of condition of setting three kinds of conditions in the rule, then first edge termination self need can confirm adjustment.
Step S405, if first edge termination self need to confirm adjustment, then first edge termination according to time adjustment message to adjusting fiducial time, and the first other-end transmitting time adjustment message in the synchronic group under it.
Step S406, other-end time of reception adjustment message, and according to time adjustment message to adjusting fiducial time.
Other-end among the step S406 after receiving time adjustment message, judge the time adjustment message that receives whether be under the terminal the terminal in the synchronic group send, and whether sense terminals has unenforced time adjustment message; If the time that receives adjustment message under the terminal the terminal in the synchronic group send, then abandon the time adjustment message that receives; If the time that receives adjustment message be under the terminal the terminal in the synchronic group send, and the terminal do not have unenforced time adjustment message, then according to said time adjustment message adjustment fiducial time, and preserves said time adjustment message; If the time that receives adjustment message be under the terminal the terminal in the synchronic group send; And there is unenforced time adjustment message at the terminal; The object synchronization grade of then more said time adjustment message and adjustment of unenforced time message; If the object synchronization grade of the time that receives adjustment message is higher than the target of unenforced time adjustment message; Then carry out adjustment fiducial time, preserve the time adjustment message that receives and abandon unenforced time adjustment message according to the time adjustment message that receives; If the object synchronization grade of the time that receives adjustment message is not higher than the target of unenforced time adjustment message, then abandon the time adjustment message that receives, wherein, said object synchronization grade is second synchronization level of synchronic group.
The present invention also provides the terminal corresponding with method, below in conjunction with accompanying drawing portable terminal embodiment is described.
Of Fig. 5, terminal provided by the invention comprises: fiducial time difference determination module 51, set rule judgment module 52 and fiducial time adjusting module 53.
Wherein, fiducial time, difference determination module 51 was used to receive the signal that is used for identified time information that second edge termination sends, and confirmed according to the signal of identified time information whether fiducial time is variant; If confirm that fiducial time is variant, confirm that then first edge termination belongs to different synchronic groups respectively with second edge termination; Confirm fiducial time, whether difference exceeded setting range; Set rule judgment module 52 and be used for whether needs are adjusted according to the rule judgment of setting self; If adjusting module 53 was used for said first edge termination and self need confirmed adjustment fiducial time, then first under first edge termination fiducial time of synchronic group is adjusted into second under second edge termination fiducial time of synchronic group.
More excellent ground, the signal of identified time information is a pilot signal.
More excellent ground, fiducial time difference exceed that setting range is that super frame period is different, the superframe start bit is different or synchronism deviations greater than the number of chips of setting.
More excellent ground, number of chips is set according to the protection of pilot code and data division at interval, perhaps gets into the periodicity that can adjust synchronously before the 1 jumping scope according to first edge termination and multiply by the setting of maximum adjustment step-length.
If confirm that fiducial time, difference did not exceed setting range; Present embodiment provides another kind of scheme that can two differences synchronic group are synchronous; If confirm that promptly fiducial time, difference did not exceed setting range, then will belong to first synchronic group first edge termination with belong to second second edge termination of synchronic group adjust synchronously through the method for synchronization at a slow speed under the synchronous regime.
Whether the terminal is adjusted self according to the rule judgment of setting, therefore set rule judgment module 52 be used for satisfy confirm first the synchronization level of synchronic group be lower than second synchronization level of synchronic group; Perhaps first the synchronization level of synchronic group the synchronization level of synchronic group is identical with said second, and said first the edge termination quantity that comprises of synchronic group be less than the second edge termination quantity that comprises of synchronic group; If perhaps first the synchronization level of synchronic group the synchronization level of synchronic group is identical with second; And said first the edge termination quantity that comprises of synchronic group the edge termination quantity that comprises of synchronic group is identical with said second; But said first was later than for said second fiducial time of synchronic group the fiducial time of synchronic group; Satisfy any condition under these three conditions, adjustment self need can be confirmed in the terminal.
More excellent ground, the synchronization level of synchronic group is group the highest synchronization level at all terminals that comprise, the synchronization level at terminal is divided according to the terminal synchronizes ability.
With first be adjusted into the fiducial time of synchronic group second the concrete grammar of the fiducial time of synchronic group do, according to the fiducial time of time adjustment message adjustment self, and the first other-end transmitting time adjustment message in the synchronic group under it.
Each terminal in the synchronic group; Both can be used as the edge termination that triggers adjustment fiducial time, also can be receive time adjustment message after, to the other-end of adjusting self fiducial time; Therefore; The terminal also should comprise time adjustment message processing module 54, and time adjustment message processing module 54 is used for time of reception adjustment message, and according to time adjustment message to adjusting fiducial time.
More excellent ground, time adjustment message comprise adjustment amount and object synchronization grade fiducial time.
Fiducial time, adjustment amount was said first synchronic group and second synchronic group difference fiducial time, perhaps be first synchronic group and second difference fiducial time of synchronic group deduct first synchronic group estimate adjustment amount inter-sync fiducial time; Said object synchronization grade is second synchronization level of synchronic group.
Time adjustment message also comprises: adjust in number of sub frames, adjustment designated time and the target super frame period one or more relatively.
For avoiding that a plurality of edge terminations transmitting time adjustment simultaneously message is arranged in the same synchronic group; Said fiducial time, adjusting module 53 also was used at first edge termination before the adjustment of first under it synchronic group other-end transmitting time message, and first edge termination is adjusted the transmission of message time of delay.And postpone in the integer sub-frame, evenly to distribute.
The terminal need judge also after receiving time adjustment message whether message comes from crowd under it; And if the situation that also has the adjustment of unenforced time still message in the terminal also need be handled in this terminal; Therefore time adjustment message processing module 54 also is used for; Judge the time adjustment message receive whether be under the terminal the terminal in the synchronic group send, and whether sense terminals has unenforced time adjustment message;
If said time adjustment message be under the terminal the terminal in the synchronic group send, then abandon the said time to adjust message; If said time adjustment message be under the terminal the terminal in the synchronic group send, and the terminal do not have unenforced time adjustment message, then according to said time adjustment message adjustment fiducial time, and preserves said time adjustment message; If said time adjustment message be under the terminal the terminal in the synchronic group send; And there is unenforced time adjustment message at the terminal; The object synchronization grade of then more said time adjustment message and adjustment of unenforced time message; Then carry out adjustment fiducial time, preserve the time adjustment message that receives and abandon unenforced time adjustment message according to the time adjustment message that receives; If the object synchronization grade of the time that receives adjustment message is not higher than the target of unenforced time adjustment message, then abandon the time adjustment message that receives, wherein, said object synchronization grade is second synchronization level of synchronic group.
In order to guarantee that group interior all terminals can both effectively adjust, more excellent ground, time adjustment message processing module 54 also are used for transmitting the time adjustment message of being preserved to affiliated crowd terminal.
Terminal in the present embodiment both can be used for the terminal that time adjustment message is sent, and also can be the time adjustment and received the terminal of handling.Be that the operation that judges whether all terminals in the affiliated crowd are carried out adjustment fiducial time and transmitting time adjustment message can be accomplished in same terminal; Also can accomplish after receiving the time adjustment message of other-end transmission; Through a series of judgements, the operation that time adjustment message is dealt with.Therefore, the terminal in the synchronic group promptly can be used as the promoter of adjustment fiducial time, also can be used as by adjustment side.
Whether the terminal in the present embodiment can accomplish and need adjust crowd's under it fiducial time, as the promoter of adjustment.Also can be used as the recipient who accepts time adjustment message, accept time adjustment message and make corresponding processing.Like this, get in the temporal information range of receiving each other, can judge which terminal and belong to and need be adjusted the fiducial time of synchronic group like two terminals in the present embodiment.Then send time adjustment message and give the other-end among the affiliated crowd, other-end is made handled to message after receiving time adjustment message, makes that finally the affiliated crowd's in two terminals fiducial time is synchronous.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (31)
1. one kind is mixed in the ad-hoc network method for synchronous between the crowd, it is characterized in that this method comprises:
The signal that is used for identified time information that first edge termination sends according to second edge termination that receives confirms whether the fiducial time of fiducial time and second edge termination of self is variant;
If first edge termination confirms that fiducial time is variant, confirm that then first edge termination belongs to different synchronic groups respectively with second edge termination, and confirm according to the signal that is used for identified time information fiducial time, whether difference exceeded setting range;
Said first edge termination confirms that fiducial time, difference exceeded setting range, and then whether needs are adjusted according to the rule judgment of setting self;
If said first edge termination self need to confirm adjustment, first under then will said first edge termination has been adjusted into second affiliated fiducial time of synchronic group of said second edge termination the fiducial time of synchronic group.
2. method according to claim 1 is characterized in that, the signal of said identified time information is a pilot signal.
3. method according to claim 2 is characterized in that, said fiducial time difference exceed that setting range is that super frame period is different, the superframe start bit is different or synchronism deviations greater than the number of chips of setting.
4. method according to claim 3; It is characterized in that; Said number of chips is set according to the protection of pilot code and data division at interval, perhaps gets into the periodicity that can adjust synchronously before the 1 jumping scope according to first edge termination and multiply by the setting of maximum adjustment step-length.
5. method according to claim 1 is characterized in that, if confirm that fiducial time, difference did not exceed setting range, then this method further comprises:
Belong to first synchronic group first edge termination with belong to second second edge termination of synchronic group adjust synchronously through the method for synchronization at a slow speed under the synchronous regime.
6. method according to claim 1 is characterized in that, said first edge termination confirms that fiducial time, difference exceeded setting range, and then whether needs are adjusted according to the rule judgment of setting self, comprising:
If said first the synchronization level of synchronic group be lower than said second synchronization level of synchronic group; If perhaps said first the synchronization level of synchronic group the synchronization level of synchronic group is identical with said second, and said first the edge termination quantity that comprises of synchronic group be less than the said second edge termination quantity that comprises of synchronic group; If perhaps said first the synchronization level of synchronic group the synchronization level of synchronic group is identical with said second; And said first the edge termination quantity that comprises of synchronic group the edge termination quantity that comprises of synchronic group is identical with said second; But said first was later than for said second fiducial time of synchronic group the fiducial time of synchronic group, self need then to confirm adjustment.
7. according to the said method of claim 6, it is characterized in that, the highest synchronization level at all terminals that the synchronization level of said synchronic group comprises for synchronic group, the synchronization level at terminal is divided according to the terminal synchronizes ability.
8. method according to claim 7 is characterized in that, saidly is adjusted into for said second fiducial time of synchronic group the fiducial time of synchronic group with said first, comprising:
Said first edge termination according to time adjustment message to adjusting fiducial time, and the first other-end transmitting time adjustment message in the synchronic group under it;
Said other-end time of reception adjustment message, and according to time adjustment message to adjusting fiducial time.
9. method according to claim 8 is characterized in that, said time adjustment message comprises: fiducial time adjustment amount and object synchronization grade.
10. method according to claim 9; It is characterized in that; Said fiducial time, adjustment amount was said first synchronic group and second synchronic group difference fiducial time, perhaps be first synchronic group and second difference fiducial time of synchronic group deduct first synchronic group estimate adjustment amount inter-sync fiducial time.
11. method according to claim 9 is characterized in that, said time adjustment message also comprises: adjust in number of sub frames, adjustment designated time and the target super frame period one or more relatively.
12. method according to claim 8 is characterized in that, said first edge termination under it first in the synchronic group before the other-end transmitting time adjustment message, this method further comprises:
Said first edge termination is adjusted the transmission of message time of delay.
13. method according to claim 12 is characterized in that, said delay evenly distributes in the integer sub-frame.
14. method according to claim 9 is characterized in that, said other-end time of reception adjustment message, and according to time adjustment message to adjusting fiducial time, comprising:
Said other-end judge the time adjustment message that receives whether be under the terminal the terminal in the synchronic group send, and whether sense terminals has unenforced time adjustment message;
If the time that receives adjustment message under the terminal the terminal in the synchronic group send, then abandon the time adjustment message that receives;
If the time that receives adjustment message be under the said other-end the terminal in the synchronic group send; And said other-end does not have unenforced time adjustment message; Then adjust fiducial time, and preserve the time adjustment message that receives according to said time adjustment message;
If the time that receives adjustment message be under the said other-end the terminal in the synchronic group send; And there is unenforced time adjustment message at the terminal; The object synchronization grade of then more said time adjustment message and adjustment of unenforced time message; If the object synchronization grade of the time that receives adjustment message is higher than the goal gradient of unenforced time adjustment message; Then carry out adjustment fiducial time, preserve the time adjustment message that receives and abandon unenforced time adjustment message according to the time adjustment message that receives; If the object synchronization grade of the time that receives adjustment message is not higher than the target of unenforced time adjustment message, then abandon the time adjustment message that receives, wherein, said object synchronization grade is second synchronization level of synchronic group.
15. method according to claim 14 is characterized in that, preserves after the said time adjustment message, this method further comprises:
The time adjustment message of being preserved is transmitted at said other-end terminal in affiliated synchronic group.
16. synchronous terminal between the crowd in the mixing ad-hoc network is characterized in that this terminal comprises:
Fiducial time, the difference determination module was used to receive the signal that is used for identified time information that second edge termination sends, and confirmed according to the signal of said identified time information whether the fiducial time of fiducial time and second edge termination of self is variant; If confirm that fiducial time is variant, confirm that then first edge termination belongs to different synchronic groups respectively with second edge termination; Confirm fiducial time, whether difference exceeded setting range;
Set the rule judgment module, be used for whether needs are adjusted according to the rule judgment of setting self;
Fiducial time, adjusting module self need to confirm adjustment if be used for said first edge termination, and first under then will said first edge termination has been adjusted into second affiliated fiducial time of synchronic group of said second edge termination the fiducial time of synchronic group.
17. terminal according to claim 16 is characterized in that, the signal of said identified time information is a pilot signal.
18. terminal according to claim 17 is characterized in that, said fiducial time difference exceed that setting range is that super frame period is different, the superframe start bit is different or synchronism deviations greater than the number of chips of setting.
19. terminal according to claim 18; It is characterized in that; Said number of chips is set according to the protection of pilot code and data division at interval, perhaps gets into the periodicity that can adjust synchronously before the 1 jumping scope according to first edge termination and multiply by the setting of maximum adjustment step-length.
20. terminal according to claim 16; It is characterized in that; Said fiducial time, adjusting module also was used for; If confirm that fiducial time, difference did not exceed setting range, then will belong to first synchronic group first edge termination with belong to second second edge termination of synchronic group adjust synchronously through the method for synchronization at a slow speed under the synchronous regime.
21. terminal according to claim 16 is characterized in that, said setting rule judgment module, if be used for said first the synchronization level of synchronic group be lower than said second synchronization level of synchronic group; If perhaps said first the synchronization level of synchronic group the synchronization level of synchronic group is identical with said second, and said first the edge termination quantity that comprises of synchronic group be less than the said second edge termination quantity that comprises of synchronic group; If perhaps said first the synchronization level of synchronic group the synchronization level of synchronic group is identical with said second; And said first the edge termination quantity that comprises of synchronic group the edge termination quantity that comprises of synchronic group is identical with said second; But said first was later than for said second fiducial time of synchronic group the fiducial time of synchronic group, self need then to confirm adjustment.
22. terminal according to claim 21 is characterized in that, the highest synchronization level at all terminals that the synchronization level of said synchronic group comprises for synchronic group, and the synchronization level at terminal is divided according to the terminal synchronizes ability.
23. terminal according to claim 21 is characterized in that, said fiducial time, adjusting module was used for according to time adjustment message adjusting fiducial time, and the first other-end transmitting time adjustment message in the synchronic group under it.
24. terminal according to claim 23 is characterized in that, said terminal also comprises:
Time adjustment message processing module is used for time of reception adjustment message, and according to time adjustment message to adjusting fiducial time.
25. terminal according to claim 24 is characterized in that, said time adjustment message comprises: fiducial time adjustment amount and object synchronization grade.
26. terminal according to claim 25; It is characterized in that; Said fiducial time, adjustment amount was said first synchronic group and second synchronic group difference fiducial time, perhaps be first synchronic group and second difference fiducial time of synchronic group deduct first synchronic group estimate adjustment amount inter-sync fiducial time; Said object synchronization grade is second synchronization level of synchronic group.
27. terminal according to claim 25 is characterized in that, said time adjustment message also comprises: adjust in number of sub frames, adjustment designated time and the target super frame period one or more relatively.
28. terminal according to claim 27; It is characterized in that; Said fiducial time, adjusting module also was used for, said first edge termination under it first in the synchronic group before the other-end transmitting time adjustment message, adjust the transmission of message time of delay.
29. terminal according to claim 28 is characterized in that, said delay evenly distributes in the integer sub-frame.
30. terminal according to claim 25; It is characterized in that; Said time adjustment message processing module also is used for, judge the time adjustment message that receives whether be under the terminal the terminal in the synchronic group send, and whether sense terminals has unenforced time adjustment message;
If said time adjustment message be under the terminal the terminal in the synchronic group send, then abandon the said time to adjust message;
If said time adjustment message be under the terminal the terminal in the synchronic group send, and the terminal do not have unenforced time adjustment message, then according to said time adjustment message adjustment fiducial time, and preserves said time adjustment message;
If said time adjustment message be under the terminal the terminal in the synchronic group send; And there is unenforced time adjustment message at the terminal; The object synchronization grade of then more said time adjustment message and adjustment of unenforced time message; If the object synchronization grade of the time that receives adjustment message is higher than the goal gradient of unenforced time adjustment message; Then carry out adjustment fiducial time, preserve the time adjustment message that receives and abandon unenforced time adjustment message according to the time adjustment message that receives; If the object synchronization grade of the time that receives adjustment message is not higher than the target of unenforced time adjustment message, then abandon the time adjustment message that receives, wherein, said object synchronization grade is second synchronization level of synchronic group.
31. terminal according to claim 30 is characterized in that, said time adjustment message processing module also is used for transmitting the time adjustment message of being preserved to affiliated synchronic group terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103883370A CN102364982A (en) | 2011-11-29 | 2011-11-29 | Method for synchronizing groups and terminal in mixed self-organizing network |
| PCT/CN2012/081693 WO2013078901A1 (en) | 2011-11-29 | 2012-09-20 | Method and terminal for synchronizing groups in hybrid self-organizing network |
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| CN2011103883370A CN102364982A (en) | 2011-11-29 | 2011-11-29 | Method for synchronizing groups and terminal in mixed self-organizing network |
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| WO2013078901A1 (en) * | 2011-11-29 | 2013-06-06 | 电信科学技术研究院 | Method and terminal for synchronizing groups in hybrid self-organizing network |
| CN104247529A (en) * | 2012-03-02 | 2014-12-24 | 富士通株式会社 | Nodes, and communication control method |
| CN105453668A (en) * | 2013-08-09 | 2016-03-30 | 瑞典爱立信有限公司 | Method and apparatus for timing misalignment signalling |
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| PL2984885T3 (en) | 2013-04-12 | 2017-09-29 | Telefonaktiebolaget Lm Ericsson (Publ) | A method and wireless device for providing device-to-device communication |
| WO2015020602A1 (en) | 2013-08-09 | 2015-02-12 | Telefonaktiebolaget L M Ericsson (Publ) | Direct control signaling in a wireless communication system |
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