CN103957590A - Method and device for synchronization and synchronizing signal transmission between base stations - Google Patents
Method and device for synchronization and synchronizing signal transmission between base stations Download PDFInfo
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- CN103957590A CN103957590A CN201410172934.3A CN201410172934A CN103957590A CN 103957590 A CN103957590 A CN 103957590A CN 201410172934 A CN201410172934 A CN 201410172934A CN 103957590 A CN103957590 A CN 103957590A
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Abstract
The invention discloses a method and device for synchronization and synchronizing signal transmission between base stations. The method comprises the steps that the base station to be synchronized determines monitoring time for monitoring a synchronizing signal of the synchronizing base station in a monitoring period, wherein the base station to be synchronized does not send data in the monitoring time; when the monitoring time is due, the synchronizing signal of the synchronizing base station is monitored; according to the monitored synchronizing signal, synchronization between the base station to be synchronized and the synchronizing base station is conducted. By the adoption of the scheme, compared with the prior art, synchronization between the synchronizing base station and the base station to be synchronized is effectively achieved, interference between time slots is avoided, and system signal transmission quality is improved.
Description
Technical field
The present invention relates to mobile communication technology field, relate in particular to method and the device of a kind of synchronization among base stations, synchronizing signal transmission.
Background technology
The development of mobile communication technology be unable to do without the support of simultaneous techniques, and the switching between stable, the aligning of uplink and downlink timeslot of carrier frequency, reliable high-quality transmission, base station etc. all needs Synchronization Control accurately.TD SDMA access (the TD-SCDMA that China proposes, Time Division-Synchronous Code Division Multiple Access) in technology, owing to having adopted time division duplex (TDD, Time Division Duplex) pattern, has higher requirement to time synchronized.Between TD-SCDMA system adjacent base station, to the required precision of time synchronized, be 3 μ s.
In the process communicating between adjacent base station, eating dishes without rice or wine between this adjacent base station is asynchronous, in communication process, the signal of previous time slot drops in next time slot so, has destroyed the orthogonality of the orthogonal code in these two time slots, makes this all normally demodulation of two time slots; A slot transmission up-link information is used in the first base station in adjacent base station, and this slot transmission downlink information is used in the second base station in adjacent base station, the signal that the signal of the first base station transmitting directly receives the second base station so causes interference, affects the second base station and normally receives signal.
As can be seen here, between the base station of TDD mode, how synchronously can avoid time slot interference to become the problem of needing solution badly at present.
Summary of the invention
Method and device that the embodiment of the present invention provides a kind of synchronization among base stations, synchronizing signal to send, in order to solve between the base station of current TDD mode how synchronously can avoid the problem of time slot interference.
The embodiment of the present invention provides a kind of method of synchronization among base stations, comprising:
Treat that synchronising base station determines in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, described in treat that synchronising base station does not send data in described time of intercept;
When described time of intercept arrives, intercept the synchronizing signal of described synchronising base station;
According to the described synchronizing signal listening to, synchronize with described synchronising base station.
Further, treat that synchronising base station determines in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station, comprising:
When the listening periods until synchronising base station is identical with the system information broadcast cycle, select the transmitting time of described system information broadcast in the cycle as for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
Further, treat that synchronising base station determines in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station, comprising:
At least two system information broadcasts in the listening periods until synchronising base station, have been comprised during the cycle, select described in one of them in described listening periods the transmitting time of system information broadcast in the cycle as for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
Further, treat that synchronising base station determines in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station, comprising:
Determine treat synchronising base station system information broadcast in the cycle for intercepting a transmitting time of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB;
At least two system information broadcasts in the listening periods until synchronising base station, have been comprised during the cycle, determine in listening periods for intercepting a system information broadcast cycle of the synchronizing signal of synchronising base station, and using transmitting time definite described in described definite system information broadcast cycle as described treat synchronising base station for intercepting the time of intercept of the synchronizing signal of synchronising base station;
Wherein, for treat in the listening periods of synchronising base station except the other system information broadcasting cycle of a described definite system information broadcast the cycle, in described definite transmitting time, send the system information packet without segmentation (No segment) combination.
Further, according to the described synchronizing signal listening to, synchronize with described synchronising base station, comprising:
According to the described synchronizing signal listening to, carry out channel estimating, determine the time offset value with described synchronising base station, and the signal power value of described synchronising base station;
When the signal power value of described synchronising base station is greater than default power threshold, according to described time offset value, to described, treat that the crystal oscillator of synchronising base station synchronously adjusts.
Further, in a synchronising base station system, described in treat that synchronising base station is different for intercepting the time of intercept of synchronizing signal for the time of intercept of intercepting synchronizing signal and described synchronising base station.
The embodiment of the present invention also provides a kind of method of synchronization among base stations, comprising:
Synchronising base station determines that listening periods is interior for intercepting the time of intercept of the synchronizing signal of other synchronising base stations, and wherein, described synchronising base station does not send data in described time of intercept;
The other times of described synchronising base station described time of intercept in listening periods, send synchronizing signal, so that treat that synchronising base station obtains described synchronizing signal and carries out synchronization among base stations.
Further, in a synchronising base station system, described synchronising base station is different for intercepting the time of intercept of synchronizing signal for the time of intercept of intercepting synchronizing signal and described other synchronising base stations.
A kind of method that the embodiment of the present invention also provides synchronizing signal to send, comprising:
Determine that listening periods is interior for intercepting a transmitting time of synchronizing signal, wherein, in described transmitting time, do not send data;
At the other times except described transmitting time, broadcast system information, wherein, synchronising base station, when sending described system information, can send synchronizing signal.
Further, determine in listening periods for intercepting a transmitting time of synchronizing signal, comprising:
When the listening periods of base station is identical with the system information broadcast cycle, a transmitting time in the selective system information broadcasting cycle is as for intercepting the time of synchronizing signal, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
Further, determine in listening periods for intercepting a transmitting time of synchronizing signal, comprising:
At least two system information broadcasts in the listening periods of base station, have been comprised during the cycle, select described in one of them in listening periods the transmitting time of system information broadcast in the cycle as for intercepting the time of synchronizing signal, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
Further, determine in listening periods for intercepting the time of the wireless sub-frame of synchronizing signal, comprising:
The system information broadcast of determining base station is for intercepting a transmitting time of the synchronizing signal of synchronising base station in the cycle, and wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB;
At least two system information broadcasts in the listening periods of base station, have been comprised during the cycle, determine in listening periods for intercepting a system information broadcast cycle of synchronizing signal, and using transmitting time definite described in described definite system information broadcast cycle as described base station for intercepting the time of synchronizing signal;
Wherein, for treat in the listening periods of synchronising base station except the other system information broadcasting cycle of described definite system information broadcast the cycle, in described definite transmitting time, send the system information packet without segmentation (No segment) combination.
Accordingly, the embodiment of the present invention also provides a kind of device of synchronization among base stations, comprising:
Time determining unit, for determining in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, described in treat that synchronising base station does not send data in described time of intercept;
Intercept unit, for when described time of intercept arrives, intercept the synchronizing signal of described synchronising base station;
Lock unit, for according to the described synchronizing signal listening to, synchronizes with described synchronising base station.
Further, described time determining unit, when identical with the system information broadcast cycle specifically for the listening periods when until synchronising base station, select the transmitting time of described system information broadcast in the cycle as for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
Further, described time determining unit, specifically for having comprised at least two system information broadcasts in the listening periods when until synchronising base station during the cycle, select described in one of them in described listening periods the transmitting time of system information broadcast in the cycle as for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
Further, described time determining unit, specifically for determine treat synchronising base station system information broadcast in the cycle for intercepting a transmitting time of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB;
At least two system information broadcasts in the listening periods until synchronising base station, have been comprised during the cycle, determine in listening periods for intercepting a system information broadcast cycle of the synchronizing signal of synchronising base station, and using transmitting time definite described in described definite system information broadcast cycle as described treat synchronising base station for intercepting the time of intercept of the synchronizing signal of synchronising base station;
Wherein, for treat in the listening periods of synchronising base station except the other system information broadcasting cycle of a described definite system information broadcast the cycle, in described definite transmitting time, send the system information packet without segmentation (No segment) combination.
Further, described lock unit, specifically for carrying out channel estimating according to the described synchronizing signal that listens to, determines the time offset value with described synchronising base station, and the signal power value of described synchronising base station; And when the signal power value of described synchronising base station is greater than default power threshold, according to described time offset value, to described, treat that the crystal oscillator of synchronising base station synchronously adjusts.
Further, in a synchronising base station system, described in treat that synchronising base station is different for intercepting the time of intercept of synchronizing signal for the time of intercept of intercepting synchronizing signal and described synchronising base station.
The embodiment of the present invention also provides a kind of device of synchronization among base stations, comprising:
Time determining unit, determines in listening periods that for synchronising base station, for intercepting the time of intercept of the synchronizing signal of other synchronising base stations, wherein, described synchronising base station does not send data in described time of intercept;
Transmitting element, for the other times described time of intercept in listening periods, sends synchronizing signal, so that treat that synchronising base station obtains described synchronizing signal and carries out synchronization among base stations.
Further, in a synchronising base station system, described synchronising base station is different for intercepting the time of intercept of synchronizing signal for the time of intercept of intercepting synchronizing signal and described other synchronising base stations.
The device that the embodiment of the present invention also provides a kind of synchronizing signal to send, comprising:
Time determining unit for determining in listening periods for intercepting a transmitting time of synchronizing signal, wherein, does not send data in described transmitting time;
Radio unit, for the other times except described transmitting time, broadcast system information, wherein, described system information has comprised synchronizing signal.
Further, described time determining unit, when identical with the system information broadcast cycle specifically for the listening periods when base station, a transmitting time in the selective system information broadcasting cycle is as for intercepting the time of synchronizing signal, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
Further, described time determining unit, specifically for having comprised at least two system information broadcasts in the listening periods when base station during the cycle, select described in one of them in listening periods the transmitting time of system information broadcast in the cycle as for intercepting the time of synchronizing signal, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
Further, described time determining unit, specifically for the system information broadcast of determining base station in the cycle for intercepting a transmitting time of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB;
At least two system information broadcasts in the listening periods of base station, have been comprised during the cycle, determine in listening periods for intercepting a system information broadcast cycle of synchronizing signal, and using transmitting time definite described in described definite system information broadcast cycle as described base station for intercepting the time of synchronizing signal;
Wherein, for treat in the listening periods of synchronising base station except the other system information broadcasting cycle of described definite system information broadcast the cycle, in described definite transmitting time, send the system information packet without segmentation (No segment) combination.
Beneficial effect of the present invention comprises:
In the method that the embodiment of the present invention provides, treat that synchronising base station determines in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, in this time of intercept, treat that synchronising base station does not send data message; And, when this time of intercept arrives, intercept the synchronizing signal of synchronising base station; According to the synchronizing signal listening to, synchronize with synchronising base station.Like this, treat that synchronising base station intercepts the synchronizing signal of synchronising base station according to definite time of intercept, effectively realized synchronising base station and treated synchronizeing between synchronising base station, and having avoided the interference between time slot, promoted system signal transmission quality.
The application's further feature and advantage will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the application.The application's object and other advantages can be realized and be obtained by specifically noted structure in the specification write, claims and accompanying drawing.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention with the embodiment of the present invention one, is not construed as limiting the invention.In the accompanying drawings:
The method flow diagram of the synchronization among base stations that Fig. 1 provides for the embodiment of the present invention one;
The method flow diagram of the synchronization among base stations that Fig. 2 provides for the embodiment of the present invention two;
The method flow diagram that the synchronizing signal that Fig. 3 provides for the embodiment of the present invention three sends;
The schematic diagram when listening periods until synchronising base station that Fig. 4 (a) provides for the embodiment of the present invention three is identical with the system information broadcast cycle until synchronising base station;
The listening periods until synchronising base station that Fig. 4 (b) provides for the embodiment of the present invention three comprises the schematic diagram of four system information broadcasts until synchronising base station during the cycle;
The apparatus structure schematic diagram of the synchronization among base stations that Fig. 5 provides for the embodiment of the present invention four;
The apparatus structure schematic diagram of the synchronization among base stations that Fig. 6 provides for the embodiment of the present invention five;
The apparatus structure schematic diagram that the synchronizing signal that Fig. 7 provides for the embodiment of the present invention six sends.
Embodiment
In order to provide the implementation of avoiding time slot interference problem between base station, method and device that the embodiment of the present invention provides a kind of synchronization among base stations, synchronizing signal to send, below in conjunction with Figure of description, the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein only, for description and interpretation the present invention, is not intended to limit the present invention.And in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
Below in conjunction with Figure of description, with specific embodiment, method provided by the invention and device are described in detail.
Embodiment mono-:
The embodiment of the present invention one provides a kind of method of synchronization among base stations, is applied to treat synchronising base station, and method step as shown in Figure 1, comprising:
Step 101, treat that synchronising base station determines in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station.
Wherein, in this time of intercept, treat that synchronising base station does not send data.
In step 101, what is called treats that the listening periods of synchronising base station is for characterizing the time cycle of the synchronizing signal of intercepting synchronising base station, in each listening periods, treat that synchronising base station intercepts once the synchronizing signal of synchronising base station, this listening periods can be a time span (for example: every 5 seconds), can also be a time interval (for example: 8:10～8:15), do not limit here.
In embodiments of the present invention, listening periods can also represent by the system information broadcast cycle, and a system information broadcast cycle represents a listening periods, or a plurality of system information broadcast cycles represent a listening periods, etc.
Wherein, the system information broadcast cycle is that base station is used for time cycle of cycle sending system information.
And the system information for the treatment of synchronising base station comprises a Master Information Block (MIB, Master Information Block), one or two Scheduling Block (SB, Scheduling Block) and a plurality of system information block (SIB, System Information Block).
Wherein, in MIB, comprised and comprised the PLMN type, PLMN ID of MIB Value Tag, support and about the schedule information of SIB, such as: the residing position of SIB (SIB_POS), cycle (SIB_REP), segments (SEG_COUNT) and Fragment Offset (SIB_OFF) etc.; The schedule information that comprises other SIB that cannot carry in MIB in SB; In SIB, comprised to treat synchronising base station coverage in community access relevant information, for example: cell reselection parameters, Non-Access Stratum system information ... etc..
After scheduling system information completes, treat that synchronising base station passes through Primary Common Control Physical Channel (PCCPCH, Primary Common Control Physical Channel) broadcast system information.
Owing to treating which time tranfer MIB synchronising base station has pre-determined at, at which time tranfer SB and at which time tranfer SIB, so in synchronising base station is being determined listening periods when intercepting the time of intercept of synchronizing signal of synchronising base station, the transmitting time of Master Information Block can not be used, the transmitting time of Scheduling Block and system information block can not be used again.
Particularly, treat that synchronising base station determines in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station, comprising:
When the listening periods until synchronising base station is identical with the system information broadcast cycle, select the transmitting time of described system information broadcast in the cycle as for intercepting the time of intercept of the synchronizing signal of synchronising base station.
Or,
In the listening periods until synchronising base station, comprise at least two system information broadcasts during the cycle, selected described in one of them in described listening periods the transmitting time of system information broadcast in the cycle as for intercepting the time of intercept of the synchronizing signal of synchronising base station.
Also just mean, in listening periods, comprise a plurality of system information broadcasts during the cycle, in order to guarantee that the system information broadcast cycle can continue broadcast according to current technology, from a plurality of system information broadcast, in the cycle, select a system information broadcast cycle, and the cycle, determine that from the system information broadcast of selecting a transmitting time is for intercepting the synchronizing signal of synchronising base station.
For example: listening periods has comprised three system information broadcast cycles: system information broadcast cycle 1, system information broadcast cycle 2 and system information broadcast cycle 3, a transmitting time of the wireless sub-frame in the selective system information broadcasting cycle 2, for intercepting the synchronizing signal of synchronising base station, continues broadcast system information in the time of system information broadcast cycle 1 and system information broadcast cycles 3 correspondence according to current technology so.
In another embodiment of the present invention, treat that synchronising base station determines in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station, comprising:
Determine treat synchronising base station system information broadcast in the cycle for intercepting a transmitting time of the synchronizing signal of synchronising base station.
At least two system information broadcasts in the listening periods until synchronising base station, have been comprised during the cycle, determine in listening periods for intercepting a system information broadcast cycle of the synchronizing signal of synchronising base station, and using transmitting time definite described in described definite system information broadcast cycle as described treat synchronising base station for intercepting the time of intercept of the synchronizing signal of synchronising base station.
Wherein, for treat in the listening periods of synchronising base station except the other system information broadcasting cycle of a described definite system information broadcast the cycle, in described definite transmitting time, send the system information packet without segmentation (No segment) combination.
Also just mean, owing to comprising a plurality of system information broadcast cycle in listening periods, determine so the transmitting time of system information broadcast in the cycle, in listening periods, a plurality of definite time (being that each system information broadcast comprises one in the cycle) will be comprised like this, in order to improve the utilance of frequency spectrum resource, select the transmitting time of one of them system information broadcast in the cycle for intercepting the synchronizing signal of synchronising base station, a transmitting time in the other system information broadcasting cycle sends the system information packet without segmentation (No segment) combination.
For example: listening periods has comprised three system information broadcast cycles: the system information broadcast cycle 1, system information broadcast cycle 2 and system information broadcast cycle 3, determine the transmitting time A of system information broadcast in the cycle, in the system information broadcast cycle 1, comprise time A so, in the system information broadcast cycle 2, comprise time A and in the system information broadcast cycle 3 in comprise time A, the time A in selective system information broadcasting cycle 2 is for intercepting the synchronizing signal of synchronising base station, the time A in system information broadcast cycle 1 and the time A in system information broadcast cycle 3 send the system information packet without segmentation (No segment) combination.
It should be noted that the other times transmitting system information in the system information broadcast cycle comprising in listening periods.
Step 102, when this time of intercept arrives, intercept the synchronizing signal of described synchronising base station.
In step 102, treat that synchronising base station can utilize physical layer L1 layer to monitor channel to the monitoring of time of intercept.
When monitoring this PCCPCH channel and have data distributing, determine that time of intercept not yet arrives; When monitoring this PCCPCH channel and there is no data distributing, determine that time of intercept arrives, can intercept the synchronizing signal of synchronising base station.
It should be noted that, in a synchronising base station system, treat that synchronising base station is different from synchronising base station for intercepting the time of intercept of synchronizing signal for intercepting the time of intercept of synchronizing signal.
Because synchronising base station is using as treating that synchronising base station goes to intercept the synchronizing signal of other synchronising base stations, this synchronising base station is also by the time of intercept that has to intercept the synchronizing signal of other synchronising base stations, in this intercepts the time of intercept of synchronizing signal of other synchronising base stations, this synchronising base station can not issue synchronizing signal, if treat that synchronising base station is identical for intercepting the time of intercept of synchronizing signal for the time of intercept of intercepting other synchronising base stations and synchronising base station, treat that synchronising base station just can not get synchronizing signal, just cannot carry out synchronous.
This synchronizing signal that step 103, basis listen to, synchronizes with this synchronising base station.
Particularly, first, treat that synchronising base station can carry out channel estimating according to this synchronizing signal listening to, determine the time offset value with this synchronising base station, and the signal power value of this synchronising base station;
Secondly, when the signal power value of this synchronising base station is greater than default power threshold, the crystal oscillator of this being treated to synchronising base station according to this time offset value is adjusted.
Concrete method of adjustment is identical with method of adjustment of the prior art, at this, is no longer described in detail.
Simultaneously, by the scheme of the embodiment of the present invention one, treat that synchronising base station intercepts the synchronizing signal of synchronising base station according to definite time of intercept, in time of intercept, do not send data simultaneously, effectively realized synchronising base station and treated synchronizeing between synchronising base station, and avoided the interference between time slot, promoted system signal transmission quality, in addition the synchronization among base stations method that the present embodiment provides, can adopt the mode of software to realize completely, without setting up any hardware device, avoided the difficulty in hardware deployment, and set up the higher problem of cost that extra hardware device causes.
Embodiment bis-:
The embodiment of the present invention two provides a kind of method of synchronization among base stations, and for synchronising base station, method step as shown in Figure 2, comprising:
Step 201, synchronising base station are determined in listening periods for intercepting the time of intercept of the synchronizing signal of other synchronising base stations.
Wherein, this synchronising base station does not send data in this time of intercept.
In step 201, synchronising base station is as treating the role of synchronising base station, need to going to intercept the synchronizing signal of other synchronising base stations, with realize with other synchronising base stations between synchronize.Now, synchronising base station is determined in listening periods for intercepting the time of intercept of the synchronizing signal of other synchronising base stations.
Particularly, in above-described embodiment one, treat that synchronising base station determines in listening periods that, for intercepting the time of intercept of the synchronizing signal of synchronising base station, the implementation adopting is identical, does not repeat them here.
Step 202, this synchronising base station other times except this time of intercept in listening periods, send synchronizing signal, so that treat that synchronising base station obtains this synchronizing signal and carries out synchronization among base stations.
It should be noted that, in a synchronising base station system, this synchronising base station is different for intercepting the time of intercept of synchronizing signal for the time of intercept of intercepting synchronizing signal and other synchronising base stations.
Embodiment tri-:
The embodiment of the present invention three provides a kind of method for transmitting synchronizing signal, and method step as shown in Figure 3, comprising:
Step 301, determine in listening periods for intercepting a transmitting time of synchronizing signal.
Wherein, in described transmitting time, do not send data.
In step 301,, determine in listening periods for intercepting a transmitting time of synchronizing signal have three kinds of situations particularly:
The first situation:
When the listening periods of base station is identical with the system information broadcast cycle, a transmitting time in the selective system information broadcasting cycle is as for intercepting the time of synchronizing signal.
Wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
The second situation:
In the listening periods of base station, comprise at least two system information broadcasts during the cycle, selected described in one of them in listening periods the transmitting time of system information broadcast in the cycle as for intercepting the time of synchronizing signal.
Wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
The third situation:
The system information broadcast of determining base station in the cycle for intercepting a transmitting time of the synchronizing signal of synchronising base station.
Wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
At least two system information broadcasts in the listening periods of base station, have been comprised during the cycle, determine in listening periods for intercepting a system information broadcast cycle of synchronizing signal, and using transmitting time definite described in described definite system information broadcast cycle as described base station for intercepting the time of synchronizing signal.
Wherein, for treat in the listening periods of synchronising base station except the other system information broadcasting cycle of described definite system information broadcast the cycle, in described definite transmitting time, send the system information packet without segmentation (No segment) combination.
Step 302, at the other times except described transmitting time, broadcast system information.
Wherein, when sending described system information, can send synchronizing signal.
In the above-described embodiments, treat that synchronising base station determines in listening periods that, for intercepting the transmitting time of synchronizing signal, object is could start intercepting synchronising base station in this time.In order to treat that synchronising base station can periodically intercept the synchronizing signal of synchronising base station, intercepting of property performance period is synchronous, treat that synchronising base station can arrange certain listening periods, and this listening periods comprises at least one system information broadcast cycle.
Like this, after all system information broadcast in the cycle, all according to above-mentioned regular sending system information.
Illustrate, shown in Fig. 4 (a) and Fig. 4 (b), the listening periods that represents to treat synchronising base station with idleRep, sibRep represents to treat the system information broadcast cycle of synchronising base station, and idlePos is illustrated in the system information broadcast cycle for intercepting the time of intercept of the synchronizing signal of synchronising base station.
Fig. 4 (a) is the schematic diagram when the listening periods of synchronising base station is identical with system information broadcast cycle until synchronising base station.
From Fig. 4 (a), can find out, idlePos treats synchronising base station definite transmitting time in sibRep, and this time is not the transmitting time of Master Information Block, neither Scheduling Block and the transmitting time of system information block, and do not send data at idlePos.The position for the treatment of synchronising base station idlePos in each sibRep immobilizes, treat that like this synchronising base station exists a set time to remove to intercept synchronising base station in each idleRep, treat that synchronising base station periodically intercepts at idlePos the synchronizing signal that synchronising base station issues, realized synchronous between base station.
Fig. 4 (b) for comprising the schematic diagram of four system information broadcasts until synchronising base station during the cycle in the listening periods of synchronising base station.
From Fig. 4 (b), can find out, in a listening periods, comprise four systems information broadcasting cycle sibRep, in each system information broadcast cycle sibRep, all have an idlePos, and four idlePos positions be identical.
Treat synchronising base station random sibRep of selection from four sibRep, such as second sibRep, so, treat that synchronising base station does not send data on the idlePos of second sibRep, and on the idlePos of other three sibRep the idlePos except second sibRep, send the system information packet without segmentation (No segment) combination, like this, treat that synchronising base station can intercept the synchronizing signal of synchronising base station on the idlePos of second sibRep, guarantee in a listening periods idleRep, synchronising base station to be intercepted once, make to treat that synchronising base station realization is synchronous.
Embodiment tetra-:
Based on same inventive concept, the method for the synchronization among base stations providing according to the above embodiment of the present invention one, correspondingly, another embodiment of the present invention also provides the device of synchronization among base stations, and apparatus structure schematic diagram as shown in Figure 5, specifically comprises:
Time determining unit 501, for determining in listening periods that, for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, this treats that synchronising base station does not send data in this time of intercept;
Intercept unit 502, for when this time of intercept arrives, intercept the synchronizing signal of this synchronising base station;
Lock unit 503, for according to this synchronizing signal listening to, synchronizes with this synchronising base station.
Further, this time determining unit 501, when identical with the system information broadcast cycle specifically for the listening periods when until synchronising base station, select the transmitting time of this system information broadcast in the cycle as for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, this transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
Further, this time determining unit 501, specifically for having comprised at least two system information broadcasts in the listening periods when until synchronising base station during the cycle, select one of them this system information broadcast in this listening periods transmitting time in the cycle as for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, this transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
Further, this time determining unit 501, specifically for determine treat synchronising base station system information broadcast in the cycle for intercepting a transmitting time of the synchronizing signal of synchronising base station, wherein, this transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB;
At least two system information broadcasts in the listening periods until synchronising base station, have been comprised during the cycle, determine in listening periods for intercepting a system information broadcast cycle of the synchronizing signal of synchronising base station, and using this definite system information broadcast in the cycle this definite transmitting time as this treat synchronising base station for intercepting the time of intercept of the synchronizing signal of synchronising base station;
Wherein, for treat in the listening periods of synchronising base station except this system information broadcast of determining other system information broadcasting cycle the cycle, in this definite transmitting time, send the system information packet without segmentation (No segment) combination.
Further, this lock unit 503, specifically for carrying out channel estimating according to this synchronizing signal of listening to, determines the time offset value with this synchronising base station, and the signal power value of this synchronising base station; And when the signal power value of this synchronising base station is greater than default power threshold, the crystal oscillator of this being treated to synchronising base station according to this time offset value is synchronously adjusted.
Further, in a synchronising base station system, this treats that synchronising base station is different for intercepting the time of intercept of synchronizing signal for the time of intercept of intercepting synchronizing signal and this synchronising base station.
The function of above-mentioned each unit can, corresponding to the respective handling step in flow process shown in Fig. 1, not repeat them here.
Embodiment five:
Based on same inventive concept, the method for the synchronization among base stations providing according to the above embodiment of the present invention two, correspondingly, another embodiment of the present invention also provides the device of synchronization among base stations, and apparatus structure schematic diagram as shown in Figure 6, specifically comprises:
Time determining unit 601, determines in listening periods that for synchronising base station, for intercepting the time of intercept of the synchronizing signal of other synchronising base stations, wherein, this synchronising base station does not send data in this time of intercept;
Transmitting element 602, for the other times this time of intercept in listening periods, sends synchronizing signal, so that treat that synchronising base station obtains this synchronizing signal and carries out synchronization among base stations.
Further, in a synchronising base station system, this synchronising base station is different for intercepting the time of intercept of synchronizing signal for other synchronising base stations of time of intercept and this of intercepting synchronizing signal.
The function of above-mentioned each unit can, corresponding to the respective handling step in flow process shown in Fig. 2, not repeat them here.
Embodiment six:
Based on same inventive concept, the method that the synchronizing signal providing according to the above embodiment of the present invention three sends, correspondingly, and the device that another embodiment of the present invention also provides synchronizing signal to send, apparatus structure schematic diagram as shown in Figure 7, specifically comprises:
Time determining unit 701 for determining in listening periods for intercepting a transmitting time of synchronizing signal, wherein, does not send data in this transmitting time;
Radio unit 702, for the other times except this transmitting time, broadcast system information, wherein, when sending described system information, can send synchronizing signal.
Further, this time determining unit 701, when identical with the system information broadcast cycle specifically for the listening periods when base station, a transmitting time in the selective system information broadcasting cycle is as for intercepting the time of synchronizing signal, wherein, this transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
Further, this time determining unit 701, specifically for having comprised at least two system information broadcasts in the listening periods when base station during the cycle, select one of them this system information broadcast in listening periods transmitting time in the cycle as for intercepting the time of synchronizing signal, wherein, this transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
Further, this time determining unit 701, specifically for the system information broadcast of determining base station in the cycle for intercepting a transmitting time of the synchronizing signal of synchronising base station, wherein, this transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB;
At least two system information broadcasts in the listening periods of base station, have been comprised during the cycle, determine in listening periods for intercepting a system information broadcast cycle of synchronizing signal, and using this definite system information broadcast in the cycle this definite transmitting time as this base station for intercepting the time of synchronizing signal;
Wherein, for treat in the listening periods of synchronising base station except this definite system information broadcast other system information broadcasting cycle the cycle, in this definite transmitting time, send the system information packet without segmentation (No segment) combination.
The function of above-mentioned each unit can, corresponding to the respective handling step in flow process shown in Fig. 3, not repeat them here.
To sum up should, the scheme that the embodiment of the present invention provides, treats that synchronising base station determines in listening periods that, for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, this treats that synchronising base station does not send data in this time of intercept; And when this time of intercept arrives, intercept the synchronizing signal of this synchronising base station; And according to this synchronizing signal listening to, synchronize with this synchronising base station.The scheme that adopts the embodiment of the present invention to provide, than prior art, has not only effectively realized synchronising base station and has treated synchronizeing between synchronising base station, and having avoided the interference between time slot, has promoted system signal transmission quality.
The device of the synchronization among base stations that the application's embodiment provides can be realized by computer program.Those skilled in the art should be understood that; above-mentioned Module Division mode is only a kind of in numerous Module Division modes; if be divided into other modules or do not divide module, as long as the device of synchronization among base stations has above-mentioned functions, all should be within the application's protection range.
The application is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present application, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (24)
1. a method for synchronization among base stations, is characterized in that, comprising:
Treat that synchronising base station determines in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, described in treat that synchronising base station does not send data in described time of intercept;
When described time of intercept arrives, intercept the synchronizing signal of described synchronising base station;
According to the described synchronizing signal listening to, synchronize with described synchronising base station.
2. the method for claim 1, is characterized in that, treats that synchronising base station determines in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station, comprising:
When the listening periods until synchronising base station is identical with the system information broadcast cycle, select the transmitting time of described system information broadcast in the cycle as for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
3. the method for claim 1, is characterized in that, treats that synchronising base station determines in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station, comprising:
At least two system information broadcasts in the listening periods until synchronising base station, have been comprised during the cycle, select described in one of them in described listening periods the transmitting time of system information broadcast in the cycle as for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
4. the method for claim 1, is characterized in that, treats that synchronising base station determines in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station, comprising:
Determine treat synchronising base station system information broadcast in the cycle for intercepting a transmitting time of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB;
At least two system information broadcasts in the listening periods until synchronising base station, have been comprised during the cycle, determine in listening periods for intercepting a system information broadcast cycle of the synchronizing signal of synchronising base station, and using transmitting time definite described in described definite system information broadcast cycle as described treat synchronising base station for intercepting the time of intercept of the synchronizing signal of synchronising base station;
Wherein, for treat in the listening periods of synchronising base station except the other system information broadcasting cycle of a described definite system information broadcast the cycle, in described definite transmitting time, send the system information packet without segmentation No segment combination.
5. the method as described in as arbitrary in claim 1～4, is characterized in that, according to the described synchronizing signal listening to, synchronizes with described synchronising base station, comprising:
According to the described synchronizing signal listening to, carry out channel estimating, determine the time offset value with described synchronising base station, and the signal power value of described synchronising base station;
When the signal power value of described synchronising base station is greater than default power threshold, according to described time offset value, to described, treat that the crystal oscillator of synchronising base station synchronously adjusts.
6. the method as described in as arbitrary in claim 1～4, is characterized in that, in a synchronising base station system, described in treat that synchronising base station is different for intercepting the time of intercept of synchronizing signal for the time of intercept of intercepting synchronizing signal and described synchronising base station.
7. a method for synchronization among base stations, is characterized in that, comprising:
Synchronising base station determines that listening periods is interior for intercepting the time of intercept of the synchronizing signal of other synchronising base stations, and wherein, described synchronising base station does not send data in described time of intercept;
The other times of described synchronising base station described time of intercept in listening periods, send synchronizing signal, so that treat that synchronising base station obtains described synchronizing signal and carries out synchronization among base stations.
8. method as claimed in claim 7, is characterized in that, in a synchronising base station system, described synchronising base station is different for intercepting the time of intercept of synchronizing signal for the time of intercept of intercepting synchronizing signal and described other synchronising base stations.
9. the method that synchronizing signal sends, is characterized in that, comprising:
Determine that listening periods is interior for intercepting a transmitting time of synchronizing signal, wherein, in described transmitting time, do not send data;
At the other times except described transmitting time, broadcast system information, wherein, synchronising base station, when sending described system information, can send synchronizing signal.
10. method as claimed in claim 9, is characterized in that, determines in listening periods for intercepting a transmitting time of synchronizing signal, comprising:
When the listening periods of base station is identical with the system information broadcast cycle, a transmitting time in the selective system information broadcasting cycle is as for intercepting the time of synchronizing signal, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
11. methods as claimed in claim 9, is characterized in that, determine in listening periods for intercepting a transmitting time of synchronizing signal, comprising:
At least two system information broadcasts in the listening periods of base station, have been comprised during the cycle, select described in one of them in listening periods the transmitting time of system information broadcast in the cycle as for intercepting the time of synchronizing signal, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
12. methods as claimed in claim 9, is characterized in that, determine in listening periods for intercepting a transmitting time of synchronizing signal, comprising:
The system information broadcast of determining base station is for intercepting a transmitting time of the synchronizing signal of synchronising base station in the cycle, and wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB;
At least two system information broadcasts in the listening periods of base station, have been comprised during the cycle, determine in listening periods for intercepting a system information broadcast cycle of synchronizing signal, and using transmitting time definite described in described definite system information broadcast cycle as described base station for intercepting the time of synchronizing signal;
Wherein, for treat in the listening periods of synchronising base station except the other system information broadcasting cycle of described definite system information broadcast the cycle, in described definite transmitting time, send the system information packet without segmentation No segment combination.
The device of 13. 1 kinds of synchronization among base stations, is characterized in that, comprising:
Time determining unit, for determining in listening periods for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, described in treat that synchronising base station does not send data in described time of intercept;
Intercept unit, for when described time of intercept arrives, intercept the synchronizing signal of described synchronising base station;
Lock unit, for according to the described synchronizing signal listening to, synchronizes with described synchronising base station.
14. devices as claimed in claim 13, it is characterized in that, described time determining unit, when identical with the system information broadcast cycle specifically for the listening periods when until synchronising base station, select the transmitting time of described system information broadcast in the cycle as for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
15. devices as claimed in claim 13, it is characterized in that, described time determining unit, specifically for having comprised at least two system information broadcasts in the listening periods when until synchronising base station during the cycle, select described in one of them in described listening periods the transmitting time of system information broadcast in the cycle as for intercepting the time of intercept of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
16. devices as claimed in claim 13, it is characterized in that, described time determining unit, specifically for determine treat synchronising base station system information broadcast in the cycle for intercepting a transmitting time of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB;
At least two system information broadcasts in the listening periods until synchronising base station, have been comprised during the cycle, determine in listening periods for intercepting a system information broadcast cycle of the synchronizing signal of synchronising base station, and using transmitting time definite described in described definite system information broadcast cycle as described treat synchronising base station for intercepting the time of intercept of the synchronizing signal of synchronising base station;
Wherein, for treat in the listening periods of synchronising base station except the other system information broadcasting cycle of a described definite system information broadcast the cycle, in described definite transmitting time, send the system information packet without segmentation No segment combination.
17. devices as described in as arbitrary in claim 13～16, it is characterized in that, described lock unit, specifically for carrying out channel estimating according to the described synchronizing signal listening to, determine the time offset value with described synchronising base station, and the signal power value of described synchronising base station; And when the signal power value of described synchronising base station is greater than default power threshold, according to described time offset value, to described, treat that the crystal oscillator of synchronising base station synchronously adjusts.
18. devices as described in as arbitrary in claim 13～16, is characterized in that, in a synchronising base station system, described in treat that synchronising base station is different for intercepting the time of intercept of synchronizing signal for the time of intercept of intercepting synchronizing signal and described synchronising base station.
The device of 19. 1 kinds of synchronization among base stations, is characterized in that, comprising:
Time determining unit, determines in listening periods that for synchronising base station, for intercepting the time of intercept of the synchronizing signal of other synchronising base stations, wherein, described synchronising base station does not send data in described time of intercept;
Transmitting element, for the other times described time of intercept in listening periods, sends synchronizing signal, so that treat that synchronising base station obtains described synchronizing signal and carries out synchronization among base stations.
20. devices as claimed in claim 19, is characterized in that, in a synchronising base station system, described synchronising base station is different for intercepting the time of intercept of synchronizing signal for the time of intercept of intercepting synchronizing signal and described other synchronising base stations.
21. 1 kinds of devices that synchronizing signal sends, is characterized in that, comprising:
Time determining unit for determining in listening periods for intercepting a transmitting time of synchronizing signal, wherein, does not send data in described transmitting time;
Radio unit, for the other times except described transmitting time, broadcast system information, wherein, synchronising base station, when sending described system information, can send synchronizing signal.
22. devices as claimed in claim 21, it is characterized in that, described time determining unit, when identical with the system information broadcast cycle specifically for the listening periods when base station, a transmitting time in the selective system information broadcasting cycle is as for intercepting the time of synchronizing signal, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
23. devices as claimed in claim 21, it is characterized in that, described time determining unit, specifically for having comprised at least two system information broadcasts in the listening periods when base station during the cycle, select described in one of them in listening periods the transmitting time of system information broadcast in the cycle as for intercepting the time of synchronizing signal, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB.
24. devices as claimed in claim 21, it is characterized in that, described time determining unit, specifically for the system information broadcast of determining base station in the cycle for intercepting a transmitting time of the synchronizing signal of synchronising base station, wherein, described transmitting time neither belongs to the transmitting time of Master Information Block MIB, does not belong to again the transmitting time of Scheduling Block SB and system information block SIB;
At least two system information broadcasts in the listening periods of base station, have been comprised during the cycle, determine in listening periods for intercepting a system information broadcast cycle of synchronizing signal, and using transmitting time definite described in described definite system information broadcast cycle as described base station for intercepting the time of synchronizing signal;
Wherein, for treat in the listening periods of synchronising base station except the other system information broadcasting cycle of described definite system information broadcast the cycle, in described definite transmitting time, send the system information packet without segmentation No segment combination.
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| CN201410172934.3A CN103957590A (en) | 2014-04-25 | 2014-04-25 | Method and device for synchronization and synchronizing signal transmission between base stations |
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| CN201410172934.3A CN103957590A (en) | 2014-04-25 | 2014-04-25 | Method and device for synchronization and synchronizing signal transmission between base stations |
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