CN101677257A - Method, device and system for obtaining silent period parameters - Google Patents
Method, device and system for obtaining silent period parameters Download PDFInfo
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- CN101677257A CN101677257A CN200810198635A CN200810198635A CN101677257A CN 101677257 A CN101677257 A CN 101677257A CN 200810198635 A CN200810198635 A CN 200810198635A CN 200810198635 A CN200810198635 A CN 200810198635A CN 101677257 A CN101677257 A CN 101677257A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
Abstract
The embodiment of the invention discloses a method for obtaining parameters of silent period. The method is characterized in that the method comprises the following steps: according to the current silent period parameters and expected silent period parameters adjusting the survival time value of the silent period parameters corresponding to the current silent period parameters; when the adjusted survival time value of the silent period parameters reach the expected activation value, setting the current silent period parameters as the expected silent period parameters and setting the survival time value of the silent period parameters as the original value. By using the invention, all base stations can adjust downward the silent period parameters according to different needs of base stations so as to finally realize that the silent period synchronous parameters of base stations in the same network can be adjusted downward.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method, Apparatus and system that obtains silent period parameters.
Background technology
Along with the development of radiotechnics, cognitive radio technology obtains application more and more widely, and frequency spectrum detection is the existing frequency spectrum that has distributed but left unused often of cognitive radio technology realization network use.
In order to improve the accuracy of frequency spectrum detection, between detection period, IEEE (Institute of Electrical andElectronics Engineers, IEEE-USA) each base station scheduling quiet period (quiet period of 802.22 standard-requireds, QP) so that the frequency spectrum that is using is detected, so that frequency spectrum detecting result is more effective, IEEE 802.22 requires each base station by exchanging silent period parameters to reach the synchronous of quiet period for fear of the interference between each base station.
Wherein, IEEE 802.22 standards are to carry out frequency spectrum detection to have adopted the structure of secondary detection and defined two kinds of quiet period, promptly detect quiet period (QP for intra-frame sensing) and interframe detection quiet period (QP for inter-frame sensing) in the frame.Wherein, QP for intra-frame sensing can place some normal frames inside, and length is less than the length of a normal frames.The length of QP for inter-frame sensing is generally used for meticulous detection greater than a normal frames.
Carrying out QP for intra-frame sensing when synchronous, a base station (BS) mainly by following information inform each device of its subordinate (customer-premise equipment, CPE) and the schedule information of the relevant quiet period of neighbor bss:
Sense cycle parameter (Intra-frame Sensing Cycle Length): we represent Intra-frameSensing Cycle Length with N, promptly what superframes to select a superframe to arrange QP for intra-framesensing to carry out frequency spectrum detection every, N is big more, the expression perception cycle is long more, therefore, when synchronous, the minimum value of neighbor cell should be chosen in each base station.
Need to prove that IEEE 802.22 standards are Media Access Control (MAC) layer design superframe structure, the channel time that is specially the MAC layer is divided into isometric superframe (superframe).The length of each superframe is 160ms, by superffame preamble+frame preamble, the superframe control head (superframe Control Header, SCH) and 16 length be that the 10ms normal frames is formed.
Detection position parameter (Intra-frame Sensing Cycle Offset): the selected position of superframe in one-period of carrying out frequency spectrum detection, its value just indicates the position, is not the value of a quantity, and is very unimportant in synchronously.
Detect framing bit graph parameter (Intra-frame Sensing Cycle frame Bitmap): we represent Intra-frame Sensing Cycle frame Bitmap with m, this value representation participate in the number of the normal frames that detects in superframe, there are 16 bits, the state that on behalf of a normal frames, each bit whether participate in detecting in this territory.M is big more, and the normal frames that detection is participated in expression is many more, and therefore, when synchronous, the maximum of neighbor cell should be chosen in each base station.
Detect duration parameters (Intra-frame Sensing Duration): we represent Intra-frameSensing Duration with d, and the detection period length of this value representation in a normal frames is unit with symbol.When synchronous, the interior detection period length of frame should be adjusted to the maximum of neighbor cell.
In the prior art, when the QP for Intra-frame Sensing in the IEEE802.22 network synchronously after, above Ding Yi each variable N, m and d be the minimum (N) of each base station in a certain zone or maximum (m, d).Supposing has K base station BS 1 in a certain zone, BS2 ..., BSK, these base stations can directly or indirectly interconnect.We define two groups and BSi, 1＜=i＜=K, relevant variable (Ni, mi, di) and (Ni ', mi ', di ').Wherein, (Ni, mi, the value when di) sending SCH for BSi, (Ni ', mi ', di ') for can satisfy one of minimum value of measurement demand.During initialization, we have, (Ni, mi, di)=(Ni ', mi ', di ').After then synchronous, we have:
N
syn＝min(Ni’，i＝1，2，...k)；
m
syn，＝max(mi’，i＝1，2，...k)；
d
syn＝max(di’，i＝1，2，...k)；
N
Syn, m
Syn,, d
SynRepresent each base station, back employed value in QP for Intra-frame Sensing scheduling synchronously respectively.Synchronously, (Ni, mi, di)=(N
Syn, m
Syn,, d
Syn), i=1,2 ..., the parameter of relevant QP for Intra-frame Sensing has all directly or indirectly reflected N in the SCH message of each base station of K.
Syn, m
Syn,, d
SynIn general, we have, Ni＜Ni ', mi＞mi ', and di＞di '.
N
Syn, m
Syn,, d
SynValue may be along with Ni, mi, the value of di changes and changes.In the prior art, utilize the silent period parameters value (Ni of base station, mi, di) carry out when synchronous, each base station and coarse knowing whether be adjusted each parameter again, cause unnecessary gravity treatment easily, and if in the quiet period schedule information transmission course if lose, also can influence the quiet period adjustment of the network overall situation, fault-tolerance is relatively poor.
Summary of the invention
Embodiment of the invention technical problem to be solved is, a kind of be used to the realize synchronous method of quiet period, device, base station and system are provided, and can realize the adjustment of the synchronize quiet parameter between the base station.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of method that is used to obtain silent period parameters, comprising:
According to current silent period parameters value and expection silent period parameters value, adjust and the corresponding silent period parameters survival of described current silent period parameters value duration value;
When adjusted described silent period parameters survival duration value reached the preset trigger value, described current silent period parameters value was set to described expection silent period parameters value, and described silent period parameters survival duration value is set to initial value.
The embodiment of the invention also provides a kind of method that is used to obtain silent period parameters, comprising:
Receive the quiet period schedule information that other base station sends, described quiet period schedule information comprises described other base station silent period parameters value and silent period parameters survival duration value;
Adjust the silent period parameters value and the silent period parameters survival duration value of described current base station according to the quiet period schedule information of current base station silent period parameters value and described other base station.
Correspondingly, the embodiment of the invention provides a kind of device that obtains silent period parameters, comprising:
First adjustment unit is used for according to current silent period parameters value and expection silent period parameters value adjustment and the corresponding silent period parameters survival of described current silent period parameters value duration value;
The unit is set, and described current silent period parameters value was set to described expection silent period parameters value when silent period parameters survival duration value reached the preset trigger value after adjusting, and described silent period parameters survival duration value is set to initial value.
The embodiment of the invention also provides a kind of device that obtains silent period parameters, comprising:
Second receiving element is received from the quiet period schedule information that other base station sends, and described quiet period schedule information comprises described other base station silent period parameters value and silent period parameters survival duration value;
The 3rd adjustment unit is used for adjusting according to the quiet period schedule information of other base station of current base station silent period parameters value and described reception the silent period parameters value and the silent period parameters survival duration value of described current base station.
The embodiment of the invention is also corresponding to provide a kind of system, comprising:
First base station is used for obtaining the quiet period schedule information according to current silent period parameters value and expection silent period parameters value, and sends described quiet period schedule information to other base station;
Described quiet period schedule information comprises that the silent period parameters value reaches and the corresponding silent period parameters survival of silent period parameters value duration value;
Second base station is used to receive the quiet period schedule information that other base station sends, and it is synchronous to carry out quiet period according to the quiet period schedule information of described other base station.
Implement the embodiment of the invention, have following beneficial effect:
Each base station can know that by the variation of the quiet parameter survival duration value of mourning in silence whether tackling self silent period parameters value adjusts, avoided unnecessary gravity treatment, simultaneously when the quiet schedule information of mourning in silence between the base station is lost in transmission course, the base station still can be carried out the adjustment of self silent period parameters value by more current silent period parameters value and expection silent period parameters value, reduced because information dropout to the influence that global network caused, has improved the fault-tolerance and the stability of network.
Description of drawings
Fig. 1 is a kind of schematic flow sheet of realizing the synchronous method embodiment of quiet period one of the present invention;
Fig. 2 is a kind of synchronous method embodiment of quiet period one idiographic flow schematic diagram of realizing of the present invention;
Fig. 3 is a kind of schematic flow sheet of realizing the synchronous method embodiment of quiet period two of the present invention
Fig. 4 is that a kind of realization quiet period of the present invention is with footwork embodiment two idiographic flow schematic diagrames;
Fig. 5 is the structural representation of system embodiment one of the present invention;
Fig. 6 is the structural representation that is used to realize the synchronous device of quiet period one in system embodiment of the present invention one first base station;
Fig. 7 is the structural representation that is used to realize the synchronous device of quiet period two in system embodiment of the present invention one second base station;
Fig. 8 is the structural representation of system embodiment two of the present invention;
Fig. 9 is the structural representation of system embodiment three of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Scheme is to utilize current silent period parameters value in base station and expection silent period parameters value adjustment as a result and the corresponding silent period parameters survival of current silent period parameters duration value relatively in the embodiment of the invention, then whether current silent period parameters value is replaced with expection silent period parameters value according to the quiet parameter survival duration value decision of mourning in silence, realize the adjustment of current silent period parameters value with this.
Consult Fig. 1, the present invention is a kind of to be obtained among the method embodiment one of silent period parameters and may further comprise the steps:
100, according to current silent period parameters value and expection silent period parameters value, adjust and the corresponding silent period parameters survival of current silent period parameters value duration value.
Wherein, current silent period parameters value or expection silent period parameters value are the sense cycle parameter value, detect framing bit graph parameter value, detect a kind of or combination in any in the duration parameters value; Silent period parameters survival duration value is with described current silent period parameters relevant detection cycle parameter survival duration value, detects framing bit graph parameter survival duration value, detects a kind of or combination in any in the duration parameters survival duration value.
For example, the silent period parameters of current detection cycle parameter value correspondence survival duration value is sense cycle parameter survival duration value.
Simultaneously, expection silent period parameters value is that the base station reaches the silent period parameters value according to self-demand and the determined expectation of current network conditions.
Described according to current silent period parameters value and expection silent period parameters value, adjustment comprises with the step of the corresponding silent period parameters survival of described current silent period parameters value duration value:
When described expection silent period parameters value equates with described current silent period parameters value, be set to initial value with the corresponding silent period parameters survival of described current silent period parameters value duration value;
When the more described expection silent period parameters of described current silent period parameters value is more excellent, will successively decrease with the corresponding silent period parameters survival of described current silent period parameters value duration value.
The more described expection silent period parameters of described current silent period parameters value is more excellent to be following any one situation or combination in any: expection sense cycle parameter value is greater than current detection cycle parameter value, expection detects framing bit graph parameter value greater than current detection framing bit graph parameter value, and expection detects the duration parameters value greater than current detection duration parameters value.
101, when adjusted silent period parameters survival duration value reached the preset trigger value, current silent period parameters value was set to expect the silent period parameters value, and the silent period parameters duration value of surviving is set to initial value.
For example, it is zero that the preset trigger value is set, and the span of the initial value of silent period parameters survival duration value is 1～255 usually, and the initial value of each base station silent period parameters survival duration value is consistent.The value of the initial value of the duration value of silent period parameters survival simultaneously is usually greater than the diameter of base station network of living in, otherwise will cause sync fail, is preset as the initial value＜=2* network diameter of 1.5* network diameter＜=silent period parameters survival duration value usually.
Silent period parameters survival duration value equals the initial value of silent period parameters survival duration value when default.
Need to prove, the current silent period parameters value of current base station and corresponding silent period parameters survival duration value compared in each unit interval of network regulation adjusts operation, and will send as other base station in consolidated network of the quiet period schedule information in the current unit interval of current base station through relatively adjusting current silent period parameters value in back and corresponding silent period parameters survival duration value, carry out the synchronous of quiet period.
Each base station can know that by the variation of the quiet parameter survival duration value of mourning in silence whether tackling self silent period parameters value adjusts, avoided unnecessary gravity treatment, also reduced simultaneously because the quiet schedule information of mourning in silence between the base station is lost the influence that global network is caused in transmission course, improved the fault-tolerance and the stability of network.
Fig. 2 specifically implements schematic flow sheet for the moment for a kind of method of obtaining silent period parameters of the present invention, comprising:
200, obtain the expection silent period parameters value of current base station.
Expection silent period parameters value is that the base station reaches the silent period parameters value according to self-demand and the determined expectation of current network conditions.
We replace relevant parameters with letter in the table 1, see table 1 for details.
For example, suppose that the preset trigger value equals 0 in the base station BS 1, the decrement value of silent period parameters survival duration value is one, and other parameter assignment is shown in " value " item in the table 1.
Table 1:
| Letter | Relevant parameter | Value | Letter | Relevant parameter | Value |
| ??N | Base station current detection cycle parameter value | ??3 | ??N’ | Base station expects sense cycle parameter value | ??4 |
| ??M | Base station current detection framing bit graph parameter value | ??4 | ??M’ | Base station expects detects framing bit graph parameter value | ??3 |
| ??D | Base station current detection duration parameters value | ??5 | ??D’ | Base station expects detects framing bit graph parameter value | ??5 |
| ??TN | The current detection cycle | ??1 | ??TM | The current detection frame | ??1 |
| Parameter survival duration value | Bitmap parameter survival duration value | ||||
| ??TD | Current detection duration parameters survival duration value | ??1 | ??Tmax | Initial value | ??5 |
201, relatively N value and N ' are worth, when N=N ', and TN=Tmax.When N＜N ', TN=TN-1.
For example the N value is 3 less than N ' value in the base station BS 1, then the TN in the base station BS 1 is subtracted one, i.e. TN=TN-1=0 among the BS1.
202, judge whether TN reaches the preset trigger value, when being judged as when being N=N ', and TN=Tmax.When being judged as not, do not do any adjustment.
For example, judge whether TN reaches trigger value among the BS1, be judged as and be.So N value among the BS1 is adjusted into N ' value, and the TN value corresponding with the N value be set to initial value Tmax, promptly in the base station BS 1, N=N '=4, TN=Tmax=5.
203, relatively M value and M ' are worth, when M=M ', and TM=Tmax.When M＞M ', TM=TM-1.
For example the M value is 3 greater than M ' value in the base station BS 1, then the TM in the base station BS 1 is subtracted one, i.e. TM=TM-1=0 among the BS1.
204, judge whether TM reaches the expection trigger value, when being judged as when being M=M ', and TM=Tmax.When being judged as not, do not do any adjustment.
For example, judge whether TM reaches trigger value among the BS1, be judged as and be.So M value among the BS1 is adjusted into M ' value, and the TM value corresponding with the M value be set to initial value Tmax, promptly in the base station BS 1, M=M '=3, TM=Tmax=5.
205, relatively D value and D ' are worth, when D=D ', and TD=Tmax.When D＞D ' is, TD=TD-1.
For example, the D value is 5 to equal D ' value in the base station BS 1, and then the TD in the base station BS 1 is set to initial value, i.e. TD=Tmax=5 among the BS1.
206, judge whether TD reaches the expection trigger value, when being judged as when being D=D ', and TD=Tmax.When being judged as not, do not do any adjustment.
Through after the above-mentioned adjustment, the current silent period parameters value of base station BS 1 is adjusted into (N=4, M=3, D=5), corresponding and with it silent period parameters survival duration is adjusted into (TN=5, TM=5, TD=5), realized downward adjustment silent period parameters value (promptly increase the N value, reduce M value and D value).
Need illustrate there is not inevitable context between 201,203,205, can carry out simultaneously, also can carry out in certain sequence.
207, current base station receives the quiet period schedule information that other base station sends.
The quiet period schedule information of described other base station comprises the silent period parameters value and the silent period parameters survival duration value of other base station.
We replace other base station relevant parameters with letter in the table 2, see table 1 for details.
For example, base station BS 1 receives the quiet period schedule information that base station BS 2 sends.The silent period parameters assignment of base station BS 2 is shown in " value " item in the table 2.
Table 2:
| Letter | Relevant parameter | Value | Letter | Relevant parameter | Value |
| ??n | Other base station sense cycle parameter value | ??3 | ??m | Framing bit graph parameter value is detected in other base station | ??5 |
| ??d | The duration parameters value is detected in other base station | ??6 | ??tn | Other base station sense cycle parameter survival duration value | ??3 |
| ??tm | Framing bit graph parameter survival duration value is detected in other base station | ??3 | ??td | Duration parameters survival duration value is detected in other base station | ??3 |
208, N and n are compared, when N=n, judge that TN whether less than tn, is judged as when being TN=tn.When N＞n, carry out N=n, and TN=tn.
For example, in the base station BS 1 N=4 greater than n=3 in the base station BS 2.Therefore N value in the base station BS 1 is adjusted into the n value of base station BS 2, and TN value in the base station BS 1 is adjusted into the tn value of base station BS 2, i.e. N=n=3, and TN=tn=3.
209, M and m are compared, when M=m, judge that TM whether less than tm, is judged as when being, carry out TM=tm.When M＜m, carry out M=m, and TM=tm.
For example, in the base station BS 1 M=3 less than m=5 in the base station BS 2.Therefore M value in the base station BS 1 is adjusted into the m value of base station BS 2, and TM value in the base station BS 1 is adjusted into the tm value of base station BS 2, i.e. M=m=5, and TM=tm=3.
210, D and d are compared, when D=d, judge that TD whether less than td, is judged as when being TD=td.When D＜d, carry out D=d, and TD=td.
For example, in the base station BS 1 D=5 less than d=6 in the base station BS 2.Therefore D value in the base station BS 1 is adjusted into the d value of base station BS 2, and TD value in the base station BS 1 is adjusted into the td value of base station BS 2, i.e. D=d=6, and TD=td=3.
Thus the silent period parameters of base station BS 1 be adjusted into (N=3, M=5, D=6) and (TN=3, TM=3, TD=3), with base station BS 2 realized silent period parameters value and silent period parameters survival duration value synchronously.
Need to prove there is not inevitable context between 208,209,210, can carry out simultaneously, also can carry out in certain sequence.
Again for example, establishing has K base station BS 1 in a certain zone, BS2 ..., BSK, these base stations can directly or indirectly interconnect.Wherein, base station BS i (the silent period parameters value of 1＜=i＜=K) be (Ni, Mi, Ni), then synchronously after, we have:
N
syn＝min(Ni’，i＝1，2，...k)；
M
syn，＝max(Mi’，i＝1，2，...k)；
D
syn＝max(Di’，i＝1，2，...k)；
N
Syn, M
Syn,, D
SynRepresent each base station, back employed value in the quiet period scheduling synchronously respectively.Suppose Di＞Di ' among the BSi, therefore, TNi=TNi-1.If each Di ' (i=2 ..., K) all less than Di, TNi then, (i=1,2 ..., value K) will will be 0 gradually, so all base stations will reselect the value of D, network just can be synchronized to a less D like this
SynValue.In like manner, all base stations can be synchronized to a bigger N
SynValue or a less M
SynValue.
As from the foregoing, the base station that the inventive method embodiment one can realize being in the same area realizes that quiet period is synchronous, it (is that the N value reduces that quiet period synchronization parameter between the base station is adjusted upward, M value and D value increase), can also accurately reduce the quiet period synchronization parameter (be that the N value increases, M value and D value reduce) between the base station.Each base station can know that by the variation of the quiet parameter survival duration value of mourning in silence whether tackling self silent period parameters value adjusts, avoided unnecessary gravity treatment, simultaneously when the quiet schedule information of mourning in silence between the base station is lost in transmission course, the base station still can be carried out the adjustment of self silent period parameters value by more current silent period parameters value and expection silent period parameters value, reduced because information dropout to the influence that global network caused, has improved the fault-tolerance and the stability of network.
Fig. 3 is a kind of schematic flow sheet that obtains the method embodiment two of silent period parameters of the embodiment of the invention, comprising:
300, be received from the quiet period schedule information that comprises described other base station silent period parameters value and silent period parameters survival duration value that other base station sends.
301, adjust the silent period parameters value and the silent period parameters survival duration value of current base station according to the silent period parameters value of other base station of current base station silent period parameters value and reception.
Need to prove, current silent period parameters value or other base station silent period parameters value are sense cycle parameter value, detection framing bit graph parameter value, detect a kind of or combination in any in the duration parameters value, and current silent period parameters survival value or other base station silent period parameters survival value are a kind of or combination in any in relevant detection cycle parameter survival duration value, detection framing bit graph parameter survival duration value, the detection duration parameters survival duration value.
Need to prove, when current base station receives the quiet period schedule information of many other base stations transmissions in the same unit interval, current base station will compare one by one according to the silent period parameters value of other base station of current base station silent period parameters value and reception, finally through relatively choosing the quiet period synchronization parameter value of optimum silent period parameters value as the current unit interval of current base station.
Fig. 4 is a kind of idiographic flow schematic diagram that obtains the method embodiment two of silent period parameters of the embodiment of the invention, comprising:
400, current base station is received from the quiet period schedule information that comprises other base station silent period parameters value and silent period parameters survival duration value that other base station sends.
It should be noted that, the idiographic flow schematic diagram of this method embodiment two is just relatively adjusted the detailed description of carrying out to a silent period parameters value, in the same unit interval, receive many quiet period schedule informations, to repeatedly relatively adjust and choose optimum silent period parameters value as the quiet period synchronization parameter value of current unit interval of current base station, process is roughly the same shown in each process of relatively adjusting and this idiographic flow schematic diagram.
We replace the current base station relevant parameters with letter in the table 1, see table 1 for details.
We replace other base station relevant parameters with letter in the table 3, see table 3 for details.
For example, base station BS 1 receives the quiet period schedule information that base station BS 2 sends.The silent period parameters value of base station BS 1 and silent period parameters survival duration value are shown in table 1 value corresponding " value " item, and the silent period parameters assignment of base station BS 2 is shown in " value " item in the table 3.
For example, base station BS 1 receives the quiet period schedule information that base station BS 2 sends, and is convenient statement, and the parameter value of other base station uses as letter in the table 3 and replaces.
Table 3:
| Letter | Relevant parameter | Value | Letter | Relevant parameter | Value |
| ??n | Other base station sense cycle parameter value | ??3 | ??m | Framing bit graph parameter value is detected in other base station | ??5 |
| ??d | The duration parameters value is detected in other base station | ??6 | ??tn | Other base station sense cycle parameter survival duration value | ??3 |
| ??tm | Framing bit graph parameter survival duration value is detected in other base station | ??3 | ??td | Duration parameters survival duration value is detected in other base station | ??3 |
401, N and n are compared, when N=n, judge that TN whether less than tn, is judged as when being TN=tn.When N＞n, carry out N=n, and TN=tn.
For example, in the base station BS 1 N=4 greater than n=3 in the base station BS 2.Therefore N value in the base station BS 1 is adjusted into the n value of base station BS 2, and TN value in the base station BS 1 is adjusted into the tn value of base station BS 2, i.e. N=n=3, and TN=tn=3.
402, M and m are compared, when M=m, judge that TM whether less than tm, is judged as when being, carry out TM=tm.When M＜m, carry out M=m, and TM=tm.
For example, in the base station BS 1 M=3 less than m=5 in the base station BS 2.Therefore M value in the base station BS 1 is adjusted into the m value of base station BS 2, and TM value in the base station BS 1 is adjusted into the tm value of base station BS 2, i.e. M=m=5, and TM=tm=3.
403, D and d are compared, when D=d, judge that TD whether less than td, is judged as when being TD=td.When D＜d, carry out D=d, and TD=td.
For example, in the base station BS 1 D=5 less than d=6 in the base station BS 2.Therefore D value in the base station BS 1 is adjusted into the d value of base station BS 2, and TD value in the base station BS 1 is adjusted into the td value of base station BS 2, i.e. D=d=6, and TD=td=3.
Thus the silent period parameters of base station BS 1 be adjusted into (N=3, M=5, D=6) and (TN=3, TM=3, TD=3).
As from the foregoing, the inventive method embodiment two can realize between the base station through relatively obtaining more excellent silent period parameters value and silent period parameters survival duration value, and with the described more excellent silent period parameters value of obtaining and silent period parameters survival duration value further with consolidated network in other base station continue relatively, realize synchronously up to the silent period parameters value and the silent period parameters survival duration value of final all base stations.Wherein, obtain more excellent silent period parameters survival duration value and can make corresponding silent period parameters value more stable effectively, the stability of overall network that load is high.
Need to prove there is not inevitable context between 401,402,403, can carry out simultaneously, also can carry out in certain sequence.
Fig. 5 is the structural representation of system implementation one of the present invention, and system embodiment one of the present invention comprises:
Described quiet period schedule information comprises that the silent period parameters value reaches and the corresponding silent period parameters survival of silent period parameters value duration value;
Wherein, first base station 1 comprises the device that is used to obtain silent period parameters, and Fig. 6 is the structural representation that obtains the device one of silent period parameters, and described device one comprises:
Need to prove, the current silent period parameters value of current base station and corresponding silent period parameters survival duration value compared in each unit interval of network regulation adjusts operation, and will send as other base station in consolidated network of the quiet period schedule information in the current unit interval of current base station through relatively adjusting current silent period parameters value in back and corresponding silent period parameters survival duration value, carry out the synchronous of quiet period.
For example, first base station 1 will more adjusted current silent period parameters value in the current unit interval and silent period parameters survival duration value send to second base station 2 as the quiet period schedule information of first base station.
Wherein, first adjustment unit 1 specifically comprises:
First comparing unit 111 is used for current silent period parameters value and expection silent period parameters value are compared;
Be specially when described expection silent period parameters value equates with described current silent period parameters value, be set to initial value with the corresponding silent period parameters survival of described current silent period parameters value duration value;
When the more described expection silent period parameters of described current silent period parameters value is more excellent, will successively decrease with the corresponding silent period parameters survival of described current silent period parameters value duration value.During concrete enforcement, the quiet parameter survival duration value of mourning in silence decrement value be made as one usually.
The more described expection silent period parameters of described current silent period parameters value is more excellent to be following any one situation or combination in any: expection sense cycle parameter value is greater than current detection cycle parameter value, expection detects framing bit graph parameter value greater than current detection framing bit graph parameter value, and expection detects the duration parameters value greater than current detection duration parameters value.
As from the foregoing, the base station that synchronizer one can be realized being in the same area in the system embodiment one of the present invention realizes that quiet period is synchronous, it (is that the sense cycle parameter value reduces that quiet period synchronization parameter between the base station is adjusted upward, detect framing bit graph parameter value and detect the duration parameters value and increase), can also accurately reduce the quiet period synchronization parameter (be that the sense cycle parameter value increases, detect framing bit graph parameter value and reduce) between the base station with detection duration parameters value.Simultaneously when the quiet schedule information of mourning in silence between the base station is lost in transmission course, synchronizer one in each base station still can be by relatively current silent period parameters value in base station and expection silent period parameters value are carried out the adjustment of silent period parameters value to the base station, reduced because information dropout to the influence that global network caused, has improved the fault-tolerance and the stability of network.
Second receiving element 21 is used to receive the quiet period schedule information that first base station 1 sends, and described quiet period schedule information comprises described other base station silent period parameters value and silent period parameters survival duration value.
The 3rd adjustment unit 22 is used for adjusting according to the silent period parameters value of first base station 1 of current base station silent period parameters value and described reception the silent period parameters value and the silent period parameters survival duration value of described current base station.
Need to prove, when current base station receives the quiet period schedule information of many other base stations transmissions in the same unit interval, current base station will compare one by one according to the silent period parameters value of its base station of base of current base station silent period parameters value and reception, finally chooses the quiet period synchronization parameter value of optimum silent period parameters value as the current unit interval of current base station.
Wherein, the 3rd adjustment unit 22 specifically comprises second comparing unit 221, is used for the expection silent period parameters value of current silent period parameters value and described other base station is compared;
The 3rd processing unit 222 is used for according to the corresponding described current base station silent period parameters survival duration value of the comparative result adjustment of described first comparing unit.
Be specially the silent period parameters value of other base station of reception when more excellent than current base station silent period parameters value, current base station silent period parameters value is adjusted into the silent period parameters value of other base station of reception, and silent period parameters survival of corresponding current base station phase duration value is adjusted into the silent period parameters survival duration value of other base station.
Wherein, the silent period parameters value of other base station of described reception is than more excellent following any one situation or the combination in any of being specially of current base station silent period parameters value:
The sense cycle parameter value of described other base station is less than the sense cycle parameter value of current base station; The detection card bitmap parameter value of described other base station is greater than the detection framing bit graph parameter value of current base station; The detection duration parameters value of other base station is greater than the detection duration parameters value of current base station.
As from the foregoing, synchronizer two can be realized between the base station through relatively obtaining more excellent silent period parameters value and silent period parameters survival duration value in the system embodiment one of the present invention, and with the described more excellent silent period parameters value of obtaining and silent period parameters survival duration value further with consolidated network in other base station continue relatively, realize synchronously up to the silent period parameters value and the silent period parameters survival duration value of final all base stations.Wherein, obtain more excellent silent period parameters survival duration value and can make corresponding silent period parameters value more stable effectively, improved the stability of overall network.
Need to prove that described synchronizer one and synchronizer two can be located in the same base station.Device one and device two also can be made the function corresponding of same parts and implement device one and device two.
Fig. 8 is the structural representation of system embodiment two of the present invention, wherein, first base station 1 and second base station 2 can send the quiet period schedule information to the other side respectively, also can receive the quiet period schedule information that the other side sends simultaneously respectively, and realize that according to the quiet period schedule information that the other side sends quiet period is synchronous.
Fig. 9 is the structural representation of system embodiment three of the present invention, comprising a plurality of base stations, all can send the quiet period schedule information between each base station to other base station, also can receive the quiet period schedule information that other base station sends simultaneously, and realize that according to the quiet period schedule information of other base station that receives quiet period is synchronous.
Implement the present invention, it (is that the N value increases that the silent period parameters value can be reduced according to self-demand in each base station, D value and M value reduce), by the downward modulation that then can realize the quiet period synchronization parameter between the base station synchronously between the base station (be that synchronous N increases, the D value reduces with synchronous M value synchronously).Also make quiet period synchronous high-efficiency and stable simultaneously, because each BS all knows whether accurately because of this and again each parameter is adjusted, therefore avoided unnecessary gravity treatment, and in quiet period schedule information transmission course if lose, also can not influence the quiet period adjustment of the network overall situation, effectively improve fault-tolerance.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
Above disclosed is preferred embodiment of the present invention only, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (18)
1, a kind of method of obtaining silent period parameters is characterized in that, comprising:
According to current silent period parameters value and expection silent period parameters value, adjust and the corresponding silent period parameters survival of described current silent period parameters value duration value;
When adjusted described silent period parameters survival duration value reached the preset trigger value, described current silent period parameters value was set to described expection silent period parameters value, and described silent period parameters survival duration value is set to initial value.
2, the method for claim 1 is characterized in that, described according to current silent period parameters value and expection silent period parameters value, adjustment comprises with the step of the corresponding silent period parameters survival of described current silent period parameters value duration value:
When described expection silent period parameters value equates with described current silent period parameters value, be set to initial value with the corresponding silent period parameters survival of described current silent period parameters value duration value;
When described current silent period parameters value is more excellent than described expection silent period parameters, will successively decrease with the corresponding silent period parameters survival of described current silent period parameters value duration value.
3, method as claimed in claim 2 is characterized in that:
Described silent period parameters value comprises the sense cycle parameter value or detects framing bit graph parameter value or detect the duration parameters value;
Described silent period parameters survival duration value comprises with described silent period parameters value relevant detection cycle parameter survival duration value or detects framing bit graph parameter survival duration value or detect duration parameters survival duration value.
4, method as claimed in claim 3 is characterized in that, when the more described expection silent period parameters of described current silent period parameters value is more excellent, will comprise with the step that the corresponding silent period parameters survival of described current silent period parameters value duration value successively decreases:
When described silent period parameters value comprises the sense cycle parameter value, described expection sense cycle parameter value is during greater than described current detection cycle parameter value, and described sense cycle parameter survival duration value successively decreases; Or
Detect framing bit graph parameter value when described silent period parameters value comprises, when described expection detected framing bit graph parameter value less than described current detection framing bit graph parameter value, described detection framing bit graph parameter survival duration value successively decreased; Or
Detect the duration parameters value when described silent period parameters value comprises, when described expection detected the duration parameters value less than described current detection duration parameters value, described detection duration parameters survival duration value successively decreased.
5, as each described method of claim 1～4, it is characterized in that, also comprise:
Receive the quiet period schedule information that other base station sends, described quiet period schedule information comprises described other base station silent period parameters value and silent period parameters survival duration value;
Adjust the silent period parameters value and the silent period parameters survival duration value of described current base station according to the quiet period schedule information of current base station silent period parameters value and described other base station.
6, method as claimed in claim 5 is characterized in that, described quiet period schedule information according to current base station silent period parameters value and described other base station is adjusted the silent period parameters value of described current base station and the step of silent period parameters survival duration value comprises:
When the silent period parameters value of described other base station equates with described current base station silent period parameters value, further judge that described current base station silent period parameters survival duration value is whether less than the silent period parameters of described other base station duration value of surviving, be judged as when being, described current base station silent period parameters survival duration value is set to the silent period parameters survival duration value of described other base station;
When the more described current base station silent period parameters of the silent period parameters value value of described other base station is more excellent, described current base station silent period parameters value is set to the silent period parameters value of other base station of described reception, and silent period parameters survival of corresponding described current base station phase duration value is set to the silent period parameters survival duration value of described other base station.
7, a kind of method of obtaining silent period parameters is characterized in that, comprising:
Receive the quiet period schedule information that other base station sends, described quiet period schedule information comprises described other base station silent period parameters value and silent period parameters survival duration value;
Adjust the silent period parameters value and the silent period parameters survival duration value of described current base station according to the quiet period schedule information of current base station silent period parameters value and described other base station.
8, method as claimed in claim 7 is characterized in that:
Described silent period parameters value comprises the sense cycle parameter value or detects framing bit graph parameter value or detect the duration parameters value;
Described silent period parameters survival duration value comprises with described silent period parameters value relevant detection cycle parameter survival duration value or detects framing bit graph parameter survival duration value or detect duration parameters survival duration value.
9, as each described method of claim 7～8, it is characterized in that described quiet period schedule information according to current base station silent period parameters value and described other base station is adjusted the silent period parameters value of described current base station and the step of silent period parameters survival duration value comprises:
When the silent period parameters value of described other base station equates with described current base station silent period parameters value, further judge that described current base station silent period parameters survival duration value is whether less than the silent period parameters of described other base station duration value of surviving, be judged as when being, described current base station silent period parameters survival duration value is set to the silent period parameters survival duration value of described other base station;
When the silent period parameters value of described other base station is more excellent than described current base station silent period parameters value, described current base station silent period parameters value is set to the silent period parameters value of other base station of described reception, and silent period parameters survival of corresponding described current base station phase duration value is set to the silent period parameters survival duration value of described other base station.
10, a kind of device that obtains silent period parameters is characterized in that, comprising:
First adjustment unit is used for according to current silent period parameters value and the adjustment of expection silent period parameters value, with the corresponding silent period parameters survival of described current silent period parameters value duration value;
The unit is set, and when adjusted described silent period parameters survival duration value reached the preset trigger value, described current silent period parameters value was set to described expection silent period parameters value, and described silent period parameters survival duration value is set to initial value.
11, device as claimed in claim 10 is characterized in that, described first adjustment unit comprises:
First comparing unit is used for current silent period parameters value and expection silent period parameters value are compared;
First processing unit is used for according to the corresponding silent period parameters survival of the comparative result adjustment of described first comparing unit duration value.
12, device as claimed in claim 11 is characterized in that, also comprises:
First receiving element is received from the quiet period schedule information that other base station sends, and described quiet period schedule information comprises described other base station silent period parameters value and silent period parameters survival duration value;
Second adjustment unit is used for adjusting according to the quiet period schedule information of other base station of current base station silent period parameters value and described reception the silent period parameters value and the silent period parameters survival duration value of described current base station.
13, device as claimed in claim 12 is characterized in that, also comprises:
Second comparing unit is used for the silent period parameters value of current silent period parameters value and described other base station is compared;
Second processing unit is used for according to the corresponding described current base station silent period parameters survival duration value of the comparative result adjustment of described first comparing unit.
14, a kind of device that obtains silent period parameters is characterized in that, comprising:
Second receiving element is received from the quiet period schedule information that other base station sends, and described quiet period schedule information comprises described other base station silent period parameters value and silent period parameters survival duration value;
The 3rd adjustment unit is used for adjusting according to the quiet period schedule information of other base station of current base station silent period parameters value and described reception the silent period parameters value and the silent period parameters survival duration value of described current base station.
15, device as claimed in claim 14 is characterized in that, also comprises:
The 3rd comparing unit is used for the silent period parameters value of current silent period parameters value and described other base station is compared;
The 3rd processing unit is used for according to the corresponding described current base station silent period parameters survival duration value of the comparative result adjustment of described first comparing unit.
16, a kind of communication system is characterized in that, comprising:
First base station is used for according to current silent period parameters value and expection silent period parameters value, adjusts and the corresponding silent period parameters survival of described current silent period parameters value duration value; When adjusted described silent period parameters survival duration value reaches the preset trigger value, described current silent period parameters value is set to described expection silent period parameters value, and described silent period parameters survival duration value is set to initial value, will described current silent period parameters value and the silent period parameters duration value of surviving send as the quiet period schedule information;
Second base station is used to receive the described quiet period schedule information that first base station sends, and adjusts self silent period parameters value and silent period parameters survival duration value according to the quiet period schedule information of described first base station.
17, system as claimed in claim 16, described first base station comprises:
First adjustment unit is used for according to current silent period parameters value and the adjustment of expection silent period parameters value, with the corresponding silent period parameters survival of described current silent period parameters value duration value;
The unit is set, and when adjusted described silent period parameters survival duration value reached the preset trigger value, described current silent period parameters value was set to described expection silent period parameters value, and described silent period parameters survival duration value is set to initial value.
18, system as claimed in claim 16, described second base station comprises:
Second receiving element is received from the quiet period schedule information that other base station sends, and described quiet period schedule information comprises described other base station silent period parameters value and silent period parameters survival duration value;
The 3rd adjustment unit is used for adjusting according to the quiet period schedule information of other base station of current base station silent period parameters value and described reception the silent period parameters value and the silent period parameters survival duration value of described current base station.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101986351A CN101677257B (en) | 2008-09-19 | 2008-09-19 | Method, device and system for obtaining silent period parameters |
| PCT/CN2009/074043 WO2010031355A1 (en) | 2008-09-19 | 2009-09-18 | Method, apparatus for obtaining quiet period parameters and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101986351A CN101677257B (en) | 2008-09-19 | 2008-09-19 | Method, device and system for obtaining silent period parameters |
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| CN101677257A true CN101677257A (en) | 2010-03-24 |
| CN101677257B CN101677257B (en) | 2013-09-11 |
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| CN2008101986351A Expired - Fee Related CN101677257B (en) | 2008-09-19 | 2008-09-19 | Method, device and system for obtaining silent period parameters |
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| CN (1) | CN101677257B (en) |
| WO (1) | WO2010031355A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281541A (en) * | 2010-06-13 | 2011-12-14 | 华为技术有限公司 | Silent period synchronization method and device |
| CN102547749A (en) * | 2012-02-20 | 2012-07-04 | 电信科学技术研究院 | Method and device for setting silence interval of cognitive radio (CR) system |
| CN102685864A (en) * | 2011-03-11 | 2012-09-19 | 夏普株式会社 | Communication method and base station using same |
| WO2014012388A1 (en) * | 2012-07-19 | 2014-01-23 | 华为技术有限公司 | Method, device and system for sensing silent period configuration |
| CN104581969A (en) * | 2013-10-25 | 2015-04-29 | 中国电信股份有限公司 | LTE heterogeneous network cross-eNB and cross-subframe scheduling method and system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101217657B1 (en) * | 2010-11-24 | 2013-01-02 | 한국전자통신연구원 | Apparatus for managing CAN network based on AUTOSAR and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7107032B2 (en) * | 2003-01-08 | 2006-09-12 | Mediatek Inc. | Radar detection method for radio local area networks |
| TWI434541B (en) * | 2006-02-23 | 2014-04-11 | Koninkl Philips Electronics Nv | Synchronization of distributed networks |
| CN100508635C (en) * | 2006-03-24 | 2009-07-01 | 联芯科技有限公司 | Resynchronization method of mobile terminal under stand-by state woke up from sleep mode |
| CN101154992B (en) * | 2006-09-30 | 2012-04-25 | 华为技术有限公司 | Method and system for implementing group data transmission |
| US7970430B2 (en) * | 2006-12-21 | 2011-06-28 | Motorola Solutions, Inc. | Method and apparatus for setting and managing operational dynamics within cognitive radio networks |
| US8687563B2 (en) * | 2007-01-09 | 2014-04-01 | Stmicroelectronics, Inc. | Simultaneous sensing and data transmission |
-
2008
- 2008-09-19 CN CN2008101986351A patent/CN101677257B/en not_active Expired - Fee Related
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2009
- 2009-09-18 WO PCT/CN2009/074043 patent/WO2010031355A1/en active Application Filing
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281541A (en) * | 2010-06-13 | 2011-12-14 | 华为技术有限公司 | Silent period synchronization method and device |
| WO2011157163A1 (en) * | 2010-06-13 | 2011-12-22 | 华为技术有限公司 | Method and device for quiet period synchronization |
| CN102281541B (en) * | 2010-06-13 | 2014-04-16 | 华为技术有限公司 | Silent period synchronization method and device |
| CN102685864A (en) * | 2011-03-11 | 2012-09-19 | 夏普株式会社 | Communication method and base station using same |
| CN102685864B (en) * | 2011-03-11 | 2017-03-01 | 夏普株式会社 | Communication means and the base station applying this communication means |
| CN102547749A (en) * | 2012-02-20 | 2012-07-04 | 电信科学技术研究院 | Method and device for setting silence interval of cognitive radio (CR) system |
| CN102547749B (en) * | 2012-02-20 | 2015-03-11 | 电信科学技术研究院 | Method and device for setting silence interval of cognitive radio (CR) system |
| WO2014012388A1 (en) * | 2012-07-19 | 2014-01-23 | 华为技术有限公司 | Method, device and system for sensing silent period configuration |
| CN104581969A (en) * | 2013-10-25 | 2015-04-29 | 中国电信股份有限公司 | LTE heterogeneous network cross-eNB and cross-subframe scheduling method and system |
| CN104581969B (en) * | 2013-10-25 | 2018-07-27 | 中国电信股份有限公司 | A kind of method and system across the cross-subframe scheduling of eNB of LTE heterogeneous networks |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101677257B (en) | 2013-09-11 |
| WO2010031355A1 (en) | 2010-03-25 |
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