CN102469484A - Base station out-of-service method, base station and time server - Google Patents
Base station out-of-service method, base station and time server Download PDFInfo
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- CN102469484A CN102469484A CN2010105462704A CN201010546270A CN102469484A CN 102469484 A CN102469484 A CN 102469484A CN 2010105462704 A CN2010105462704 A CN 2010105462704A CN 201010546270 A CN201010546270 A CN 201010546270A CN 102469484 A CN102469484 A CN 102469484A
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Abstract
The invention discloses a base station out-of-service method, which comprises the following steps that: A. when a time server enters a time synchronic maintaining state, the time server notifies self state of the base station and utilizes a built-in clock to perform the timing, and the time information is transmitted to the base station in real time; and B. the base station receives the time information from the time server, when the base station cannot receive the time information, the base station enters the time synchronic maintaining state, since the state notice from the time server is received, deviation delta T of the current time relative to the standard time is calculated in real time, when the delta T is larger than a preset threshold value, the out-of-service operation is executed. The invention also discloses a base station and a time server. By utilizing the method and the device, the interference can be reduced.
Description
Technical field
The present invention relates to mobile communication technology, particularly a kind of base station service quit method, a kind of base station and a kind of time server.
Background technology
Current, mobile communications network to time synchronized require increasingly high.Such as, for the code division multiple access (CDMA in 3G (Third Generation) Moblie (3G, the 3rd Generation) network; Code Division Multiple Access) 2000 systems and TD SDMA (TD-SCDMA; Time Division-Synchronous Code Division Multiple Access) system, it is synchronous to carry out correct time between the wherein each base station, otherwise; Will produce interference between each base station, thus problem such as cause that the appearance business can not normally be carried out.
In the prior art; Usually all global positioning system (GPS can be installed in each base station; Global Positioning System) satellite receiver module such as, each base station receiver module via satellite receives the standard time from satellite in real time, thereby keeps time synchronized to each other.
If the satellite receiver module breaks down, cause normally receiving standard time from satellite, the base station will the synchronous hold mode of entry time so; Rely on self onboard clock to carry out timing, said onboard clock is generally crystal clock, and the precision of crystal clock is limited; After after a while; Promptly can deviation occur,, then can cause interference from the base station of the standard time of satellite normal reception on every side if deviation is bigger with the standard time.For avoiding interference, after the duration of the synchronous hold mode of entry time reaches scheduled duration, the base station will be closed automatically, withdraw from service, abbreviate as and move back clothes.
In addition; Along with Precision Time Protocol (PTP; Precision Time Protocol) appearance; Realize that through transmission network the time synchronized between the base station becomes possibility gradually, other a kind of mode that realizes the time synchronized between the base station promptly is provided, specifically adopt which kind of mode to be decided according to the actual requirements.
Fig. 1 is the existing mode sketch map of realizing the time synchronized between the base station through transmission network.As shown in Figure 1; Server between the network upper reaches are provided with for the moment; Under the normal condition, time server receives the standard time from satellite in real time through the satellite receiver module of self, if the satellite receiver module breaks down; The synchronous hold mode of entry time then utilizes self onboard clock to carry out timing; In addition, the synchronous hold mode of entry time no matter whether, clock server all can be carried at temporal information in the PTP agreement, sends to each base station in downstream in real time through transmission network.Usually, time server can corresponding a plurality of base stations, and concrete quantity can be decided according to the actual requirements.
For mode shown in Figure 1, can need not in the base station, to install the satellite receiver module; Than the mode that the satellite receiver module is installed in the base station, this mode can reduce the realization cost.
But; Also can there be certain problem in mode shown in Figure 1 in practical application, as: if the synchronous hold mode of time server entry time, will there be deviation in time than standard time of receiving of base station originally so; And if afterwards sometime; Like the transmission network fault, the temporal information from time server can not be continued to receive in the base station for a certain reason, and the base station also can the synchronous hold mode of entry time so; And utilize self onboard clock to carry out timing, and this onboard clock also can produce deviation; Like this, before base station service quit, the deviation of accumulation will be very big, thereby possibly produce serious disturbance to other base station (such as the normal base station that receives from the standard time of satellite).
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of base station service quit method, can reduce interference.
Another object of the present invention is to provide a kind of base station, can reduce interference.
Another purpose of the present invention is to provide a kind of time server, can reduce interference.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of base station service quit method comprises:
A, when the synchronous hold mode of time server entry time, oneself state is notified to the base station, and is utilized self onboard clock to carry out timing, temporal information is sent to said base station in real time;
B, said base station receive the temporal information from said time server in real time, in the time can't receiving said temporal information, and the synchronous hold mode of entry time; And, begin from the state notifying that receives from said time server, calculate the current time in real time with respect to the deviation delta T of standard time, as said Δ T during, carry out and move back the clothes operation greater than pre-set threshold.
A kind of base station comprises:
First processing unit is used to receive the notice from the synchronous hold mode of entry time of time server, sends to second processing unit;
Said second processing unit; Be used for receiving temporal information in real time, in the time can't receiving said temporal information, control the synchronous hold mode of said base station entry time from said time server; And begin from receiving said notice; Calculate in real time the current time with respect to the deviation delta T of standard time,, carry out and move back the clothes operation as said Δ T during greater than pre-set threshold.
A kind of time server comprises:
The manages the unit everywhere, is used for when the synchronous hold mode of said time server entry time, notifies the 5th processing unit to carry out self function;
Said the 5th processing unit is used for giving the base station with the state notifying of said time server, and utilizes the onboard clock of said time server to carry out timing, and temporal information is sent to said base station in real time.
Thus it is clear that, adopt technical scheme of the present invention, after knowing the synchronous hold mode of time server entry time; The current time is calculated in real time with respect to the deviation of standard time in the base station, moves back the clothes operation in case deviation greater than pre-set threshold, is then carried out; Rather than as in the prior art; Have only after the duration of the synchronous hold mode of base station entry time reaches scheduled duration, could carry out and move back the clothes operation, maybe be thereby reduced preferably to the interference of other base station generation; And scheme according to the invention implements simple and convenient, is convenient to popularize.
Description of drawings
Fig. 1 is the existing mode sketch map of realizing the time synchronized between the base station through transmission network.
Fig. 2 is the flow chart of base station service quit method embodiment of the present invention.
Fig. 3 is the composition structural representation of base station embodiment of the present invention.
Fig. 4 is the composition structural representation of time server embodiment of the present invention.
Embodiment
To the problem that exists in the prior art, the base station service quit scheme among the present invention after a kind of improvement of proposition can reduce interference.
For make technical scheme of the present invention clearer, understand, below with reference to the accompanying drawing embodiment that develops simultaneously, scheme according to the invention is done to specify further.
Fig. 2 is the flow chart of base station service quit method embodiment of the present invention.As shown in Figure 2, comprising:
Step 21: when the synchronous hold mode of time server entry time, oneself state is notified to the base station, and utilized self onboard clock to carry out timing, temporal information is sent to the base station in real time.
In this step,, how to notify and do not do restriction in case the synchronous hold mode of time server entry time then can be notified oneself state to the base station; And according to existing processing mode, time server will utilize self onboard clock to carry out timing, and temporal information is sent to the base station in real time.
In addition, when the synchronous hold mode of entry time, time server also can keep grade to send to the base station self onboard clock time corresponding.
In practical application, 4 times maintenance grades can be set, each time keeps the respectively corresponding different maintenance precision grade of grade, and clock keeps grade high more, and the maintenance precision grade of correspondence is also high more; Wherein, highest-ranking maintenance precision is that caesium clock keeps precision, secondly for rubidium clock keeps precision, afterwards for high stability crystal oscillator keeps precision, keeps precision for common crystals at last.
Step 22: the base station receives the temporal information from time server in real time, in the time can't receiving temporal information, and the synchronous hold mode of entry time; And, begin from the state notifying that receives from time server, calculate the current time in real time with respect to the deviation delta T of standard time, as Δ T during, carry out and move back the clothes operation greater than pre-set threshold.
In this step; The base station receives the temporal information from time server in real time according to existing mode; If a certain moment can't receive said temporal information for a certain reason again, the synchronous hold mode of entry time then promptly utilizes self onboard clock to carry out timing.That is to say; Before the synchronous hold mode of base station entry time; Its utilization is received from the temporal information of time server and carries out time synchronized with other base station, after the synchronous hold mode of base station entry time, utilizes self onboard clock to come to carry out time synchronized with other base station.
In addition; From knowing that the synchronous hold mode of time server entry time begins; Promptly begin from the state notifying that receives from time server; The onboard clock time corresponding of punctual accuracy that the different time maintenance grade that the base station can be preserved according to self in advance is corresponding respectively and the time server that receives keeps grade etc., calculates the deviation delta T of current time with respect to the standard time in real time.
The concrete account form of Δ T can be:
1) if the base station not synchronous hold mode of entry time, then Δ T=T * δ; Wherein, T representes to keep grade to the duration of current time from the time that receives, and δ representes that the time that receives keeps the corresponding punctual accuracy of grade;
2) if the synchronous hold mode of base station entry time, then Δ T=Δ T0+T2 * δ 2, Δ T0=T1 * δ 1; Wherein, T1 representes to keep from the time that receives the duration of grade synchronous hold mode of entry time to the base station; The time that δ 1 expression receives keeps the corresponding punctual accuracy of grade; T2 representes that the synchronous hold mode of entry time is to the duration of current time from the base station, and the onboard clock time corresponding of δ 2 expression base stations keeps the corresponding punctual accuracy of grade.
In practical application; Can in the base station, be provided with one in advance and keep discriminant parameter α, initial condition, the value of α are 0; After the base station receives the state notifying from time server; The value of α is set to 1, and after the synchronous hold mode of base station self entry time, the value of α is set to 1 equally; Certainly, on the contrary also can, promptly initial condition is set to 1.Like this; For the above-mentioned the 2nd) the kind situation, the state when the base station changes, after entering into the time synchronized hold mode from non-time synchronized hold mode; Can confirm that whether time server is prior to the synchronous hold mode of own entry time through inquiry α; If then on the basis of Δ T0, accumulate T2 * δ 2, thereby obtain final Δ T.
In case the Δ T that calculates is greater than pre-set threshold β, then the base station can be carried out and moved back the clothes operation.
As other a kind of feasible implementation, in this step, after the synchronous hold mode of time server entry time is known in the base station; Can directly utilize the temporal information that is received from time server to carry out time synchronized not according to existing mode with other base station, but the time that will be received from time server keep grade and self onboard clock time corresponding to keep grade to compare, if the time that receives keeps grade to be higher than self onboard clock time corresponding maintenance grade; Then execution in step 22; Otherwise, the direct synchronous hold mode of entry time, and calculate Δ T in real time; As Δ T during, carry out and move back the clothes operation greater than β.
That is to say; If the maintenance precision grade of the onboard clock of time server is higher than the maintenance precision grade of base station self onboard clock; Then the base station utilizes the temporal information that is received from time server to carry out time synchronized with other base station; Otherwise, utilize self onboard clock to come to carry out time synchronized, thereby guaranteeing that the base station can be used keeps precision grade the highest clock relatively with other base station.
In this case, the base station can be calculated Δ T: Δ T=T3 * δ 3 in such a way; Wherein, T3 representes that the synchronous hold mode of entry time is to the duration of current time from the base station, and the onboard clock time corresponding of δ 3 expression base stations keeps the corresponding punctual accuracy of grade.
If time server reverts to normal condition, promptly revert to the non-time synchronized hold mode that can normally receive, so time server meeting informing base station from the standard time of satellite; Correspondingly, in the arbitrary moment before clothes operations is moved back in execution, if the base station receives information normal time from time server, i.e. standard time information is then with Δ T and above-mentioned α zero clearing.
So far, promptly accomplished introduction about the inventive method embodiment.
Based on above-mentioned introduction, Fig. 3 is the composition structural representation of base station embodiment of the present invention.As shown in Figure 3, comprising:
Wherein, first processing unit 31 can be further used for, and the time that receives from time server keeps grade, sends to second processing unit 32; Further preserve different time in second processing unit 32 and keep the corresponding respectively punctual accuracy of grade;
If the base station is the synchronous hold mode of entry time not, then second processing unit 32 calculates Δ T=T * δ in real time; Wherein, T representes to keep grade to the duration of current time from the time that receives, and δ representes that the time that receives keeps the corresponding punctual accuracy of grade;
If the synchronous hold mode of base station entry time, then second processing unit 32 calculates Δ T=Δ T0+T2 * δ 2, Δ T0=T1 * δ 1 in real time; Wherein, T1 representes to keep from the time that receives the duration of grade synchronous hold mode of entry time to the base station; The time that δ 1 expression receives keeps the corresponding punctual accuracy of grade; T2 representes that the synchronous hold mode of entry time is to the duration of current time from the base station, and the onboard clock time corresponding of δ 2 expression base stations keeps the corresponding punctual accuracy of grade.
In addition, also can further comprise in the base station shown in Figure 3: the 3rd processing unit 33; First processing unit 31 is further used for, and keeps grade to send to the 3rd processing unit 33 time that receives;
The 3rd processing unit 33 keeps the onboard clock time corresponding of grade and base station to keep grade to compare the time that receives; If the onboard clock time corresponding that the time that receives keeps grade to be higher than the base station keeps grade; Then notify second processing unit 32 to carry out self function; Otherwise, the direct synchronous hold mode of entry time, and calculate Δ T=T3 * δ 3 in real time; Wherein, T3 representes from the base station the synchronous hold mode of entry time to the duration of current time, and the onboard clock time corresponding of δ 3 expression base stations keeps the corresponding punctual accuracy of grade, as Δ T during greater than threshold value, carries out and moves back the clothes operation.
Fig. 4 is the composition structural representation of time server embodiment of the present invention.As shown in Figure 4, comprising:
The manages unit 41 everywhere, is used for when the synchronous hold mode of time server entry time, notifies the 5th processing unit 42 to carry out self function;
The 5th processing unit 42 is used for giving the base station with the state notifying of time server, and utilizes the onboard clock of time server to carry out timing, and temporal information is sent to the base station in real time.
Wherein, the 5th processing unit 42 also can be further used for, and keeps grade to send to the base station onboard clock time corresponding of time server.
The concrete workflow of Fig. 3 and 4 shown device embodiment please with reference to the corresponding introduction among the method embodiment shown in Figure 2, repeats no more here.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.
Claims (10)
1. a base station service quit method is characterized in that, comprising:
A, when the synchronous hold mode of time server entry time, oneself state is notified to the base station, and is utilized self onboard clock to carry out timing, temporal information is sent to said base station in real time;
B, said base station receive the temporal information from said time server in real time, in the time can't receiving said temporal information, and the synchronous hold mode of entry time; And, begin from the state notifying that receives from said time server, calculate the current time in real time with respect to the deviation delta T of standard time, as said Δ T during, carry out and move back the clothes operation greater than pre-set threshold.
2. method according to claim 1 is characterized in that, said steps A further comprises: when the synchronous hold mode of said time server entry time, keep grade to send to said base station self onboard clock time corresponding; Preserve different time in the said base station in advance and keep the corresponding respectively punctual accuracy of grade, said base station is calculated said Δ T in real time and is comprised:
If said base station is the synchronous hold mode of entry time not, then said Δ T=T * δ; Wherein, said T representes to keep grade to the duration of current time from the time that receives, and said δ representes that the time that receives keeps the corresponding punctual accuracy of grade;
If the synchronous hold mode of said base station entry time, then said Δ T=Δ T0+T2 * δ 2, said Δ T0=T1 * δ 1; Wherein, Said T1 representes to keep the duration of grade to the synchronous hold mode of said base station entry time from the time that receives; The time that said δ 1 expression receives keeps the corresponding punctual accuracy of grade; Said T2 representes that the synchronous hold mode of entry time is to the duration of current time from said base station, and the onboard clock time corresponding of the said base station of said δ 2 expressions keeps the corresponding punctual accuracy of grade.
3. method according to claim 2 is characterized in that, before the said step B, further comprises:
X, said base station keep grade and self onboard clock time corresponding to keep grade to compare the time that receives; If the time that receives keeps grade to be higher than self onboard clock time corresponding maintenance grade; Execution in step B then, otherwise, execution in step Y;
Y, the synchronous hold mode of the direct entry time in said base station, and calculate said Δ T in real time as said Δ T during greater than said threshold value, are carried out and are moved back the clothes operation.
4. method according to claim 3 is characterized in that, base station described in the said step Y is calculated said Δ T in real time and comprised:
Said Δ T=T3 * δ 3; Wherein, said T3 representes that the synchronous hold mode of entry time is to the duration of current time from said base station, and the onboard clock time corresponding of the said base station of said δ 3 expressions keeps the corresponding punctual accuracy of grade.
5. according to claim 1,2,3 or 4 described methods, it is characterized in that this method further comprises: if before the clothes operation is moved back in execution, said base station receives information normal time from said time server, then with said Δ T zero clearing.
6. a base station is characterized in that, comprising:
First processing unit is used to receive the notice from the synchronous hold mode of entry time of time server, sends to second processing unit;
Said second processing unit; Be used for receiving temporal information in real time, in the time can't receiving said temporal information, control the synchronous hold mode of said base station entry time from said time server; And begin from receiving said notice; Calculate in real time the current time with respect to the deviation delta T of standard time,, carry out and move back the clothes operation as said Δ T during greater than pre-set threshold.
7. base station according to claim 6 is characterized in that, said first processing unit is further used for, and the time that receives from said time server keeps grade, sends to said second processing unit; Further preserve different time in said second processing unit and keep the corresponding respectively punctual accuracy of grade;
If said base station is the synchronous hold mode of entry time not, then said second processing unit calculates Δ T=T * δ in real time; Wherein, said T representes to keep grade to the duration of current time from the time that receives, and said δ representes that the time that receives keeps the corresponding punctual accuracy of grade;
If the synchronous hold mode of said base station entry time, then said second processing unit are calculated Δ T=Δ T0+T2 * δ 2, said Δ T0=T1 * δ 1 in real time; Wherein, Said T1 representes to keep the duration of grade to the synchronous hold mode of said base station entry time from the time that receives; The time that said δ 1 expression receives keeps the corresponding punctual accuracy of grade; Said T2 representes that the synchronous hold mode of entry time is to the duration of current time from said base station, and the onboard clock time corresponding of the said base station of said δ 2 expressions keeps the corresponding punctual accuracy of grade.
8. base station according to claim 7 is characterized in that, further comprises in the said base station: the 3rd processing unit; Said first processing unit is further used for, and keeps grade to send to said the 3rd processing unit the time that receives;
Said the 3rd processing unit; Be used for keeping the onboard clock time corresponding of grade and said base station to keep grade to compare the time that receives; If the onboard clock time corresponding that the time that receives keeps grade to be higher than said base station keeps grade, then notify said second processing unit to carry out self function, otherwise; The direct synchronous hold mode of entry time, and calculate Δ T=T3 * δ 3 in real time; Wherein, Said T3 representes that from said base station the synchronous hold mode of entry time is to the duration of current time; The onboard clock time corresponding of the said base station of said δ 3 expressions keeps the corresponding punctual accuracy of grade, as said Δ T during greater than said threshold value, carries out and moves back the clothes operation.
9. a time server is characterized in that, comprising:
The manages the unit everywhere, is used for when the synchronous hold mode of said time server entry time, notifies the 5th processing unit to carry out self function;
Said the 5th processing unit is used for giving the base station with the state notifying of said time server, and utilizes the onboard clock of said time server to carry out timing, and temporal information is sent to said base station in real time.
10. time server according to claim 9 is characterized in that, said the 5th processing unit is further used for, and keeps grade to send to said base station the onboard clock time corresponding of said time server.
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| CN201010546270.4A CN102469484B (en) | 2010-11-15 | 2010-11-15 | Base station out-of-service method, base station and time server |
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| CN201010546270.4A CN102469484B (en) | 2010-11-15 | 2010-11-15 | Base station out-of-service method, base station and time server |
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| CN1394004A (en) * | 2001-06-29 | 2003-01-29 | 深圳市中兴通讯股份有限公司上海第二研究所 | Method and device for choosing and controlling clock source of synchronous digital optical network |
| CN2790050Y (en) * | 2004-12-10 | 2006-06-21 | 上海欣泰通信技术有限公司 | ETS exchanger time synchronizer |
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| US20070230434A1 (en) * | 2004-05-28 | 2007-10-04 | Jean-Claude Thill | Distributed Synchronization Method and System |
| CN201039198Y (en) * | 2006-09-18 | 2008-03-19 | 中兴通讯股份有限公司 | Network timing distribution system for Ethernet passive optical network |
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2010
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1394004A (en) * | 2001-06-29 | 2003-01-29 | 深圳市中兴通讯股份有限公司上海第二研究所 | Method and device for choosing and controlling clock source of synchronous digital optical network |
| US20070230434A1 (en) * | 2004-05-28 | 2007-10-04 | Jean-Claude Thill | Distributed Synchronization Method and System |
| CN2790050Y (en) * | 2004-12-10 | 2006-06-21 | 上海欣泰通信技术有限公司 | ETS exchanger time synchronizer |
| CN101022306A (en) * | 2006-02-13 | 2007-08-22 | 鼎桥通信技术有限公司 | Inter base station synchronizing method in mobile communication system |
| CN201039198Y (en) * | 2006-09-18 | 2008-03-19 | 中兴通讯股份有限公司 | Network timing distribution system for Ethernet passive optical network |
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