CN104853427A - Synchronization method for household base station, and household base station - Google Patents
Synchronization method for household base station, and household base station Download PDFInfo
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- CN104853427A CN104853427A CN201410053100.0A CN201410053100A CN104853427A CN 104853427 A CN104853427 A CN 104853427A CN 201410053100 A CN201410053100 A CN 201410053100A CN 104853427 A CN104853427 A CN 104853427A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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Abstract
The invention discloses a synchronization method for a household base station, and a household base station. The method comprises the steps: starting a WiFi module through the household base station after the household base station is electrically connected, and scanning other household base stations which are located in the same region as the household base stations and used for transmitting WiFi signals; obtaining a main household base station from the scanned other household base station, and measuring the time deviation between the household base station and the main household base station according to synchronization information acquired from the WiFi signal transmitted by the main household base station, wherein the main household base station can provide the synchronization information to the base station; and adjusting the local clock of the household base station according to the time deviation, so as to complete the clock synchronization with the main household base station. In the scheme, because the synchronization information can be scanned through the WiFi module disposed in the household base station to achieve the clock synchronization between household base stations, the method can achieve the accurate synchronization between the household base stations more simply and quickly on the basis of not modifying hardware and not occupying high-frequency resources.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of Home eNodeB synchronous method and Home eNodeB.
Background technology
Home eNodeB is that one is integrated with small base station (generally can be described as Femto or Small cell) and WLAN(Wireless Local Area Networks, WLAN) equipment of function, it can provide WiFi access function simultaneously and comprise TD-SCDMA(Time Division-Synchronous CodeDivision Multiple Access, TD SDMA) or TD-LTE(Time Division-LongTerm Evolution, time-division Long Term Evolution) etc. at interior cellular mobile communication access function, be mainly used in providing integrated communication solution to domestic consumer and enterprise customer, supplement and capacity extensions with the effective covering realizing cellular network.
Particularly, the group-network construction of described Home eNodeB can as shown in Figure 1, and wherein, described Home eNodeB can comprise for providing the Cellular Networks module of cellular mobile communication access function and for providing the WiFi module of WiFi access function.Further, as shown in Figure 1, described Home eNodeB by broadband backhaul network insertion WLAN Verification System and EPC(Evolved Packet Core, packet core network) in core net.Wherein, the framework of described EPC core net and described WLAN Verification System is identical with the framework of existing EPC core net and existing WLAN Verification System, such as, described EPC core net can comprise MME(Mobility Management Entity, Mobility Management Entity), HSS(Home SubscriberServer, home subscriber server), S-GW(Serving Gateway, gateway) and P-GW(Packet Data Network Gateway, packet data network gateway) etc. equipment, described WLAN Verification System can comprise Portal(portal server), AC(Access Controller, access controller) and AAA(Authentication Authorization Accounting, checking, authorize and book keeping operation) server etc., repeat no more herein, further, as shown in Figure 1, also can possess being in charge of in the group-network construction of described Home eNodeB and transmit the newly added equipment such as femto gateway and Home eNodeB webmaster of Home eNodeB data, also repeat no more herein.
Particularly, when there is multiple Home eNodeB and carry out networking in same setting regions, similar with macro base station, for the Home eNodeB group network system of TDD standard (as TD-SCDMA or TD-LTE standard), need between each Home eNodeB in described Home eNodeB group network system to keep clock synchronous, to avoid the signal disturbing produced each other.In addition, when Home eNodeB adopts similar frequency bands to dispose with macro base station contiguous with it, also need to keep clock synchronous with described macro base station.
Particularly, current industry often realizes the clock synchronous between Home eNodeB in the following ways:
Mode one: adopt GPS(Global Positioning System, global positioning system) satellite synchronization mode.Particularly, gps satellite signal is received to realize the clock synchronous between Home eNodeB by external gps antenna.But, due to when adopting this kind of mode, gps antenna need be arranged on outdoor unobstructed region usually to receive gps satellite signal smoothly, for major deployments in indoor and often dispose the Home eNodeB group network system that the above Home eNodeB of dozens of just can complete covering in a region, be difficult to the connection realizing outdoor gps antenna.
Mode two: adopt IEEE1588v2 agreement to carry out clock synchronous by transmission network.Particularly, when adopting this kind of mode, all base stations can be utilized by transmission network to be all connected to the feature of core net, certain concentrating equipment of core-network side arranges a reference clock, can be atomic clock or GPS synchronizing signal, adopt IEEE1588v2 agreement specified standard scheme that this synchronizing information and normal data traffic packet are together sent to base station equipment by wire transmission network again, base station equipment receives this signal and by means calibration local clocks such as delay measurements compensation, keeps and reference clock synchronization.But, due to when adopting this kind of mode, require that all transmission equipments in transmission network all need to support IEEE1588v2 time synchronization protocol, need device hardware to transform or replace, support in current real network that the transmission equipment ratio of this agreement is lower, be not easy to synchronisation requirement during Home eNodeB large scale deployment.
Mode three: undertaken synchronously by intercepting outdoor macro base station or other Home eNodeB signal of eating dishes without rice or wine.In this mode, Home eNodeB is initially powering on or in periodic duty process, the pattern switching to network intercepting carrys out the broadcast singal of autonomous reception of neighboring cell, and therefrom parses synchronizing signal according to the protocol frame structure of standard, and as reference synchronization to adjacent cell.But, when adopting this kind of mode, owing to also needing to intercept acquisition synchronizing signal outside normal transceiver communication, generally need to take partial time slot and receive adjacent cell signal specially, reduce this community user resource utilization, in addition, adjacent cell frequency range and this community inconsistent time, extra circuit need be increased to receive the signal of different frequency range toward contact, increase hardware complexity.
In sum, when adopting clock synchronization mode conventional at present to carry out the clock synchronous between Home eNodeB, often exist dispose difficulty maybe need to modify to the hardware device of Home eNodeB maybe to need to take the problem of interface-free resources etc., make the synchronous efficiency between Home eNodeB and synchronous effect lower.
Summary of the invention
Embodiments provide a kind of Home eNodeB synchronous method and equipment, synchronous efficiency and synchronous effect poor problem during in order to solve clock synchronous that the existing clock synchronization mode of employing existed at present carries out between Home eNodeB.
Embodiments provide a kind of Home eNodeB synchronous method, comprising:
Home eNodeB starts the WiFi module be arranged in described Home eNodeB after the power-up, and be positioned at same setting regions by described WiFi module scans and described Home eNodeB, other Home eNodeB each of sending WiFi signal;
According to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, choose and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB;
Corresponding synchronizing information is obtained from the WiFi signal that described main Home eNodeB sends, and measure the time deviation between described Home eNodeB and described main Home eNodeB according to the synchronizing information got, and, the local clock of described Home eNodeB is adjusted, to complete the clock synchronous between described Home eNodeB and described main Home eNodeB according to described time deviation.
Further, described method also comprises:
If do not scan WiFi signal by described WiFi module, or by described WiFi module scans to be arranged in same setting regions with described Home eNodeB, other Home eNodeB each of sending WiFi signal and determine that other Home eNodeB each scanned do not exist and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB, then
Broadcast corresponding synchronizing information by described WiFi module, with the synchronizing information making other Home eNodeB being positioned at same setting regions with described Home eNodeB broadcast according to described WiFi module, realize the clock synchronous between described Home eNodeB.
Further, according to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, choose and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB, comprising:
According to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, choose in sent WiFi signal carry specific synchronizing information mark Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB; Or,
According to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, selected equipment priority level higher than arbitrary Home eNodeB of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB.
Further, from other Home eNodeB each scanned, selected equipment priority level, comprising as providing the main Home eNodeB of respective synchronization information for described Home eNodeB higher than arbitrary Home eNodeB of described Home eNodeB:
From other Home eNodeB each scanned, selected equipment priority level is higher than other Home eNodeB each of described Home eNodeB, and from equipment priority level higher than choosing priority level and the most close Home eNodeB of described Home eNodeB other Home eNodeB each of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB, or, from equipment priority level higher than choosing the highest Home eNodeB of priority level other Home eNodeB each of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB.
Further, measure the time deviation between described Home eNodeB and described main Home eNodeB according to the synchronizing information got, comprising:
According to the synchronizing information got, obtain the very first time information T1 for representing the transmitting time that described main Home eNodeB is corresponding when sending described synchronizing information carried in described synchronizing information, and obtain the second temporal information T2 for representing the acquisition time that described Home eNodeB is corresponding when getting described synchronizing information from described main Home eNodeB;
To described master's house front yard base station feedback first packet, in described first packet, carry the 3rd temporal information T3 for representing to feedback time corresponding during described master's house front yard base station feedback the first packet;
Receiving the second packet of described master's house front yard base station feedback, in described second packet, carrying the 4th temporal information T4 for representing the feedback time that described main Home eNodeB is corresponding when feeding back the second packet to described Home eNodeB;
According to above-mentioned T1, T2, T3 and T4, obtain the time deviation D:D=1/2 [(T2-T1)+(T4-T3)] between described Home eNodeB and described main Home eNodeB by following formulae discovery.
Correspondingly, the embodiment of the present invention additionally provides a kind of Home eNodeB, comprising:
Start module, for starting the WiFi module be arranged in described Home eNodeB after the power-up;
WiFi module, same setting regions is positioned at described Home eNodeB for scanning, send other Home eNodeB each having WiFi signal, and according to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, choose and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB, and, corresponding synchronizing information is obtained from the WiFi signal that described main Home eNodeB sends, and measure the time deviation between described Home eNodeB and described main Home eNodeB according to the synchronizing information got, and, the local clock of described Home eNodeB is adjusted according to described time deviation, to complete the clock synchronous between described Home eNodeB and described main Home eNodeB.
Further, described WiFi module, if also for not scanning WiFi signal, or scan other Home eNodeB each that be arranged in same setting regions with described Home eNodeB, that send WiFi signal and determine that other Home eNodeB each scanned do not exist and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB, then broadcast corresponding synchronizing information, with the synchronizing information making other Home eNodeB being positioned at same setting regions with described Home eNodeB broadcast according to described WiFi module, realize the clock synchronous between described Home eNodeB.
Further, described WiFi module, specifically for the WiFi signal sent according to other Home eNodeB each scanned, from scanning other Home eNodeB each, choose in sent WiFi signal the Home eNodeB that carries specific synchronizing information mark as providing the main Home eNodeB of respective synchronization information for described Home eNodeB; Or,
According to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, selected equipment priority level higher than arbitrary Home eNodeB of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB.
Further, described WiFi module, specifically in the following manner from other Home eNodeB each scanned, selected equipment priority level higher than arbitrary Home eNodeB of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB:
From other Home eNodeB each scanned, selected equipment priority level is higher than other Home eNodeB each of described Home eNodeB, and from equipment priority level higher than choosing priority level and the most close Home eNodeB of described Home eNodeB other Home eNodeB each of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB, or, from equipment priority level higher than choosing the highest Home eNodeB of priority level other Home eNodeB each of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB.
Further, described WiFi module, specifically for measuring the time deviation between described Home eNodeB and described main Home eNodeB according to the synchronizing information got in the following manner:
According to the synchronizing information got, obtain the very first time information T1 for representing the transmitting time that described main Home eNodeB is corresponding when sending described synchronizing information carried in described synchronizing information, and obtain the second temporal information T2 for representing the acquisition time that described Home eNodeB is corresponding when getting described synchronizing information from described main Home eNodeB;
To described master's house front yard base station feedback first packet, in described first packet, carry the 3rd temporal information T3 for representing to feedback time corresponding during described master's house front yard base station feedback the first packet;
Receiving the second packet of described master's house front yard base station feedback, in described second packet, carrying the 4th temporal information T4 for representing the feedback time that described main Home eNodeB is corresponding when feeding back the second packet to described Home eNodeB;
According to above-mentioned T1, T2, T3 and T4, obtain the time deviation D:D=1/2 [(T2-T1)+(T4-T3)] between described Home eNodeB and described main Home eNodeB by following formulae discovery.
Beneficial effect of the present invention is as follows:
Embodiments provide a kind of Home eNodeB synchronous method and Home eNodeB, described method comprises: Home eNodeB is started WiFi module after the power-up and had other Home eNodeB each of WiFi signal by the transmission that described WiFi module scans and described Home eNodeB are positioned at the same area; Choose from other Home eNodeB each scanned and can provide the main Home eNodeB of synchronizing information for described Home eNodeB and measure the time deviation between main Home eNodeB according to the synchronizing information got from the WiFi signal that described main Home eNodeB sends; The local clock of Home eNodeB is adjusted to complete the clock synchronous between main Home eNodeB according to described time deviation.In this programme, due to by being arranged on WiFi module scans synchronizing information in Home eNodeB to realize the clock synchronous between Home eNodeB, thus can without the need to modifying also without the need to taking on the basis of interface-free resources to hardware, reach more easy, realize the object of the precise synchronization between Home eNodeB rapidly, improve the clock synchronous efficiency between Home eNodeB and synchronous effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly introduced, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Figure 1 shows that the group-network construction schematic diagram of existing Home eNodeB;
Figure 2 shows that the schematic flow sheet of Home eNodeB synchronous method described in the embodiment of the present invention one;
Figure 3 shows that the structural representation of Home eNodeB described in the embodiment of the present invention two.
Embodiment
Embodiments provide a kind of Home eNodeB synchronous method and Home eNodeB, described method comprises: Home eNodeB starts the WiFi module be arranged in described Home eNodeB after the power-up, and be positioned at same setting regions by described WiFi module scans and described Home eNodeB, other Home eNodeB each of sending WiFi signal; According to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, choose and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB; Corresponding synchronizing information is obtained from the WiFi signal that described main Home eNodeB sends, and measure the time deviation between described Home eNodeB and described main Home eNodeB according to the synchronizing information got, and, the local clock of described Home eNodeB is adjusted, to complete the clock synchronous between described Home eNodeB and described main Home eNodeB according to described time deviation.
In technical scheme described in the embodiment of the present invention, due to by being arranged on WiFi module scans synchronizing information in Home eNodeB to realize the clock synchronous between Home eNodeB, thus can without the need to modifying also without the need to taking on the basis of interface-free resources to hardware, reach more easy, realize the object of the precise synchronization between Home eNodeB rapidly, improve the clock synchronous efficiency between Home eNodeB and synchronous effect.
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one:
The embodiment of the present invention one provides a kind of Home eNodeB synchronous method, and as shown in Figure 2, it can comprise the following steps for the schematic flow sheet of Home eNodeB synchronous method described in the embodiment of the present invention one, described Home eNodeB synchronous method:
Step 101: Home eNodeB starts the WiFi module be arranged in described Home eNodeB after the power-up, and be positioned at same setting regions by described WiFi module scans and described Home eNodeB, other Home eNodeB each of sending WiFi signal.
Particularly, described Home eNodeB automatically or can start the WiFi(Wirless Fidelity be arranged in described Home eNodeB after electrifying startup according to triggering) module, with the WiFi signal that other Home eNodeB by existing near described WiFi module scans send, namely by described WiFi module scans and described Home eNodeB be positioned in same setting regions (described setting regions can adjust according to actual conditions, and the embodiment of the present invention is not limited in any way this), send other Home eNodeB each having WiFi signal.Wherein, other Home eNodeB each scanned are generally the WiFi signal that sent WiFi signal and described Home eNodeB send and possess unified SSID(Service Set Identifier, service set) Home eNodeB, the embodiment of the present invention does not repeat this.
Step 102: the WiFi signal sent according to other Home eNodeB each scanned, from other Home eNodeB each scanned, chooses and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB.
Particularly, in embodiment of the present invention, can in the following ways from other Home eNodeB each scanned, choose and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB:
Mode one: the WiFi signal sent according to other Home eNodeB each scanned, from other Home eNodeB each scanned, choose in sent WiFi signal carry specific synchronizing information mark Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB.
Wherein, described specific synchronizing information mark can for for representing that identity that corresponding Home eNodeB is corresponding is the identify label of main Home eNodeB, so that other do not possess the Home eNodeB of described specific synchronizing information mark, to the Home eNodeB of described specific synchronizing information mark be possessed as corresponding main Home eNodeB, and initiate Clock Synchronization Procedure to the described Home eNodeB possessing described specific synchronizing information mark.
It should be noted that, described mode one is especially applicable to adjacent only existence two Home eNodeB or multiple Home eNodeB all can listen to the scene of some central home base stations, and the embodiment of the present invention does not repeat this.
Mode two: the WiFi signal sent according to other Home eNodeB each scanned, from other Home eNodeB each scanned, selected equipment priority level higher than arbitrary Home eNodeB of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB.
Particularly, under mode two sight, each Home eNodeB is when sending corresponding WiFi signal, the equipment precedence information corresponding to it can be broadcasted in the WiFi signal sent separately, so that arbitrary Home eNodeB after the power-up, can according to the WiFi signal of all Home eNodeB near scanning, select corresponding equipment priority level higher than arbitrary Home eNodeB of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB.
Further, from other Home eNodeB each scanned, selected equipment priority level, can comprise as providing the main Home eNodeB of respective synchronization information for described Home eNodeB higher than arbitrary Home eNodeB of described Home eNodeB:
From other Home eNodeB each scanned, selected equipment priority level is higher than other Home eNodeB each of described Home eNodeB, and from equipment priority level higher than choosing priority level and the most close Home eNodeB of described Home eNodeB other Home eNodeB each of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB, or, from equipment priority level higher than choosing the highest Home eNodeB of priority level other Home eNodeB each of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB, the embodiment of the present invention is not limited in any way this.
It should be noted that, described mode two is especially applicable to multiple Home eNodeB needs serial to carry out synchronous scene, and the embodiment of the present invention does not repeat this.
It should be noted that in addition, the executive agent of this step 102 is usually also for being arranged on the WiFi module in described Home eNodeB, and the embodiment of the present invention does not also repeat this.
Step 103: obtain corresponding synchronizing information from the WiFi signal that described main Home eNodeB sends, and measure the time deviation between described Home eNodeB and described main Home eNodeB according to the synchronizing information got, and, the local clock of described Home eNodeB is adjusted, to complete the clock synchronous between described Home eNodeB and described main Home eNodeB according to described time deviation.
Particularly, in embodiment of the present invention, can adopt and be similar to NTP(Network TimeProtocol) Network Synchronization or IEEE1588v2 Ethernet mode synchronously etc., according to the synchronizing information got, obtain the timestamp of described synchronizing information, and measure the time deviation between Home eNodeB and main Home eNodeB according to described timestamp, and then the local clock (time deviation compensates the local clock of described Home eNodeB as will be described) of described Home eNodeB is adjusted according to described time deviation, the clock synchronous between Home eNodeB and described main Home eNodeB can be realized.
Further, in embodiment of the present invention, measure the time deviation between described Home eNodeB and described main Home eNodeB according to the synchronizing information got, can comprise:
According to the synchronizing information got, obtain carry in described synchronizing information for representing the timestamp in the very first time information T1(of the transmitting time that described main Home eNodeB is corresponding when sending described synchronizing information and described synchronizing information), and the second temporal information T2(obtained for representing the acquisition time that described Home eNodeB is corresponding when getting described synchronizing information from described main Home eNodeB or also can think the time of reception that described Home eNodeB is corresponding when receiving the WiFi signal that described main Home eNodeB sends);
To described master's house front yard base station feedback first packet, in described first packet, carry the 3rd temporal information T3 for representing to feedback time corresponding during described master's house front yard base station feedback the first packet; Further, also can carry the second temporal information T2 in described first packet, the embodiment of the present invention is not limited in any way this;
Receiving the second packet of described master's house front yard base station feedback, in described second packet, carrying the 4th temporal information T4 for representing the feedback time that described main Home eNodeB is corresponding when feeding back the second packet to described Home eNodeB; Further, also can carry the second temporal information T2 and the 3rd temporal information T3 in described second packet, the embodiment of the present invention is not limited in any way this;
According to above-mentioned T1, T2, T3 and T4, obtain the time deviation D between described Home eNodeB and described main Home eNodeB by following formulae discovery:
D=1/2[(T2-T1)+(T4-T3)]。
Further, after obtaining the time deviation D between described Home eNodeB and described main Home eNodeB, the local clock of described time deviation D to described Home eNodeB can be utilized to compensate, to realize the clock synchronous between described Home eNodeB and described main Home eNodeB.
It should be noted that, because position between Home eNodeB or communication environments may change and then cause above-mentioned time-delay deviation that corresponding change occurs at any time, therefore, in embodiment of the present invention, in order to keep synchronous all the time between Home eNodeB, above-mentioned synchronizing process need be carried out in real time or periodically according to actual conditions, and the embodiment of the present invention does not repeat this.
Further, in embodiment of the present invention, described method can also comprise:
If do not scan WiFi signal by described WiFi module, or be positioned at same setting regions by described WiFi module scans to described Home eNodeB, send and have other Home eNodeB each of WiFi signal and determine not exist in other Home eNodeB each scanned and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB, then broadcast corresponding synchronizing information by described WiFi module, with the synchronizing information making other Home eNodeB being positioned at same setting regions with described Home eNodeB broadcast according to described WiFi module, realize the clock synchronous between described Home eNodeB, that is, now, described Home eNodeB self can be used as main Home eNodeB, so that other follow-up each Home eNodeB realize clock synchronous each other according to described Home eNodeB.
It should be noted that, the executive agent of this step 103 is usually also for being arranged on the WiFi module in described Home eNodeB, and the embodiment of the present invention does not also repeat this again.
Embodiments provide a kind of Home eNodeB synchronous method, Home eNodeB can be started WiFi module after the power-up and be had other Home eNodeB each of WiFi signal by the transmission that described WiFi module scans and this Home eNodeB are positioned at the same area, and, choose from other Home eNodeB each scanned and can provide the main Home eNodeB of synchronizing information for this Home eNodeB and measure the time deviation between main Home eNodeB according to the synchronizing information got from the WiFi signal that this main Home eNodeB sends, and, the local clock of Home eNodeB is adjusted to complete the clock synchronous between main Home eNodeB according to this time deviation.In technical scheme described in the embodiment of the present invention, due to by being arranged on WiFi module scans synchronizing information in Home eNodeB to realize the clock synchronous between Home eNodeB, thus can without the need to modifying also without the need to taking on the basis of interface-free resources to hardware, reach more easy, realize the object of the precise synchronization between Home eNodeB rapidly, improve the clock synchronous efficiency between Home eNodeB and synchronous effect.
Embodiment two:
The embodiment of the present invention two provides the Home eNodeB that can be used in the present invention method shown in embodiment one, as shown in Figure 3, it is the structural representation of Home eNodeB described in the embodiment of the present invention two, and described Home eNodeB can comprise startup module 11 and WiFi module 12, wherein:
Described startup module 11 is used in after described Home eNodeB powers on and starts the WiFi module be arranged in described Home eNodeB, described WiFi module 12 can be used for scanning and is positioned at same setting regions with described Home eNodeB, send other Home eNodeB each having WiFi signal, and according to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, choose and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB, and, corresponding synchronizing information is obtained from the WiFi signal that described main Home eNodeB sends, and measure the time deviation between described Home eNodeB and described main Home eNodeB according to the synchronizing information got, and, the local clock of described Home eNodeB is adjusted according to described time deviation, to complete the clock synchronous between described Home eNodeB and described main Home eNodeB.
Particularly, described WiFi module 12 specifically can be used for the WiFi signal sent according to other Home eNodeB each scanned, from scanning other Home eNodeB each, choose in sent WiFi signal the Home eNodeB that carries specific synchronizing information mark as providing the main Home eNodeB of respective synchronization information for described Home eNodeB; Or, according to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, selected equipment priority level higher than arbitrary Home eNodeB of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB.
Wherein, from other Home eNodeB each scanned, selected equipment priority level, can comprise as providing the main Home eNodeB of respective synchronization information for described Home eNodeB higher than arbitrary Home eNodeB of described Home eNodeB:
From other Home eNodeB each scanned, selected equipment priority level is higher than other Home eNodeB each of described Home eNodeB, and from equipment priority level higher than choosing priority level and the most close Home eNodeB of described Home eNodeB other Home eNodeB each of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB, or, from equipment priority level higher than choosing the highest Home eNodeB of priority level other Home eNodeB each of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB.
Further, described WiFi module 12 specifically can be used for measuring the time deviation between described Home eNodeB and described main Home eNodeB according to the synchronizing information got in the following manner:
According to the synchronizing information got, obtain the very first time information T1 for representing the transmitting time that described main Home eNodeB is corresponding when sending described synchronizing information carried in described synchronizing information, and obtain the second temporal information T2 for representing the acquisition time that described Home eNodeB is corresponding when getting described synchronizing information from described main Home eNodeB;
To described master's house front yard base station feedback first packet, in described first packet, carry the 3rd temporal information T3 for representing to feedback time corresponding during described master's house front yard base station feedback the first packet;
Receiving the second packet of described master's house front yard base station feedback, in described second packet, carrying the 4th temporal information T4 for representing the feedback time that described main Home eNodeB is corresponding when feeding back the second packet to described Home eNodeB;
According to above-mentioned T1, T2, T3 and T4, obtain the time deviation D between described Home eNodeB and described main Home eNodeB by following formulae discovery:
D=1/2[(T2-T1)+(T4-T3)]。
Correspondingly, after obtaining the time deviation D between described Home eNodeB and described main Home eNodeB, described WiFi module 12 can utilize the local clock of described time deviation D to described Home eNodeB to compensate, to realize the clock synchronous between described Home eNodeB and described main Home eNodeB.
It should be noted that, because position between Home eNodeB or communication environments may change and then cause above-mentioned time-delay deviation that corresponding change occurs at any time, therefore, in embodiment of the present invention, in order to keep synchronous all the time between Home eNodeB, above-mentioned synchronizing process need be carried out in real time or periodically according to actual conditions, and the embodiment of the present invention does not repeat this.
Further, in embodiment of the present invention, if described WiFi module 12 also can be used for not scanning WiFi signal, or scan and to be positioned at same setting regions with described Home eNodeB, send and have other Home eNodeB each of WiFi signal and determine not exist in other Home eNodeB each scanned and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB, then by the corresponding synchronizing information of broadcast, with the synchronizing information making other Home eNodeB being positioned at same setting regions with described Home eNodeB broadcast according to described WiFi module, realize the clock synchronous between described Home eNodeB, that is, now, described Home eNodeB self can be used as main Home eNodeB, so that other follow-up each Home eNodeB realize clock synchronous each other according to described Home eNodeB.
Embodiments provide a kind of Home eNodeB, described Home eNodeB can be started WiFi module after the power-up and be had other Home eNodeB each of WiFi signal by the transmission that described WiFi module scans and this Home eNodeB are positioned at the same area, and, choose from other Home eNodeB each scanned and can provide the main Home eNodeB of synchronizing information for this Home eNodeB and measure the time deviation between main Home eNodeB according to the synchronizing information got from the WiFi signal that this main Home eNodeB sends, and, the local clock of Home eNodeB is adjusted to complete the clock synchronous between main Home eNodeB according to this time deviation.In technical scheme described in the embodiment of the present invention, due to by being arranged on WiFi module scans synchronizing information in Home eNodeB to realize the clock synchronous between Home eNodeB, thus can without the need to modifying also without the need to taking on the basis of interface-free resources to hardware, reach more easy, realize the object of the precise synchronization between Home eNodeB rapidly, improve the clock synchronous efficiency between Home eNodeB and synchronous effect.
It will be understood by those skilled in the art that embodiments of the invention can be provided as method, device (equipment) or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, device (equipment) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a Home eNodeB synchronous method, is characterized in that, comprising:
Home eNodeB starts the WiFi module be arranged in described Home eNodeB after the power-up, and be positioned at same setting regions by described WiFi module scans and described Home eNodeB, other Home eNodeB each of sending WiFi signal;
According to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, choose and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB;
Corresponding synchronizing information is obtained from the WiFi signal that described main Home eNodeB sends, and measure the time deviation between described Home eNodeB and described main Home eNodeB according to the synchronizing information got, and, the local clock of described Home eNodeB is adjusted, to complete the clock synchronous between described Home eNodeB and described main Home eNodeB according to described time deviation.
2. Home eNodeB synchronous method as claimed in claim 1, it is characterized in that, described method also comprises:
If do not scan WiFi signal by described WiFi module, or by described WiFi module scans to be arranged in same setting regions with described Home eNodeB, other Home eNodeB each of sending WiFi signal and determine that other Home eNodeB each scanned do not exist and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB, then
Broadcast corresponding synchronizing information by described WiFi module, with the synchronizing information making other Home eNodeB being positioned at same setting regions with described Home eNodeB broadcast according to described WiFi module, realize the clock synchronous between described Home eNodeB.
3. Home eNodeB synchronous method as claimed in claim 1 or 2, it is characterized in that, according to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, choose and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB, comprising:
According to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, choose in sent WiFi signal carry specific synchronizing information mark Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB; Or,
According to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, selected equipment priority level higher than arbitrary Home eNodeB of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB.
4. Home eNodeB synchronous method as claimed in claim 3, it is characterized in that, from other Home eNodeB each scanned, selected equipment priority level, comprising as providing the main Home eNodeB of respective synchronization information for described Home eNodeB higher than arbitrary Home eNodeB of described Home eNodeB:
From other Home eNodeB each scanned, selected equipment priority level is higher than other Home eNodeB each of described Home eNodeB, and from equipment priority level higher than choosing priority level and the most close Home eNodeB of described Home eNodeB other Home eNodeB each of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB, or, from equipment priority level higher than choosing the highest Home eNodeB of priority level other Home eNodeB each of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB.
5. Home eNodeB synchronous method as claimed in claim 1 or 2, is characterized in that, measure the time deviation between described Home eNodeB and described main Home eNodeB, comprising according to the synchronizing information got:
According to the synchronizing information got, obtain the very first time information T1 for representing the transmitting time that described main Home eNodeB is corresponding when sending described synchronizing information carried in described synchronizing information, and obtain the second temporal information T2 for representing the acquisition time that described Home eNodeB is corresponding when getting described synchronizing information from described main Home eNodeB;
To described master's house front yard base station feedback first packet, in described first packet, carry the 3rd temporal information T3 for representing to feedback time corresponding during described master's house front yard base station feedback the first packet;
Receiving the second packet of described master's house front yard base station feedback, in described second packet, carrying the 4th temporal information T4 for representing the feedback time that described main Home eNodeB is corresponding when feeding back the second packet to described Home eNodeB;
According to above-mentioned T1, T2, T3 and T4, obtain the time deviation D:D=1/2 [(T2-T1)+(T4-T3)] between described Home eNodeB and described main Home eNodeB by following formulae discovery.
6. a Home eNodeB, is characterized in that, comprising:
Start module, for starting the WiFi module be arranged in described Home eNodeB after the power-up;
WiFi module, same setting regions is positioned at described Home eNodeB for scanning, send other Home eNodeB each having WiFi signal, and according to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, choose and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB, and, corresponding synchronizing information is obtained from the WiFi signal that described main Home eNodeB sends, and measure the time deviation between described Home eNodeB and described main Home eNodeB according to the synchronizing information got, and, the local clock of described Home eNodeB is adjusted according to described time deviation, to complete the clock synchronous between described Home eNodeB and described main Home eNodeB.
7. Home eNodeB as claimed in claim 6, is characterized in that,
Described WiFi module, if also for not scanning WiFi signal, or scan other Home eNodeB each that be arranged in same setting regions with described Home eNodeB, that send WiFi signal and determine that other Home eNodeB each scanned do not exist and can provide the main Home eNodeB of respective synchronization information for described Home eNodeB, then broadcast corresponding synchronizing information, with the synchronizing information making other Home eNodeB being positioned at same setting regions with described Home eNodeB broadcast according to described WiFi module, realize the clock synchronous between described Home eNodeB.
8. Home eNodeB as claimed in claims 6 or 7, is characterized in that,
Described WiFi module, specifically for the WiFi signal sent according to other Home eNodeB each scanned, from scanning other Home eNodeB each, choose in sent WiFi signal the Home eNodeB that carries specific synchronizing information mark as providing the main Home eNodeB of respective synchronization information for described Home eNodeB; Or,
According to the WiFi signal that other Home eNodeB each scanned send, from other Home eNodeB each scanned, selected equipment priority level higher than arbitrary Home eNodeB of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB.
9. Home eNodeB as claimed in claim 8, it is characterized in that, described WiFi module, specifically in the following manner from other Home eNodeB each scanned, selected equipment priority level higher than arbitrary Home eNodeB of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB:
From other Home eNodeB each scanned, selected equipment priority level is higher than other Home eNodeB each of described Home eNodeB, and from equipment priority level higher than choosing priority level and the most close Home eNodeB of described Home eNodeB other Home eNodeB each of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB, or, from equipment priority level higher than choosing the highest Home eNodeB of priority level other Home eNodeB each of described Home eNodeB as providing the main Home eNodeB of respective synchronization information for described Home eNodeB.
10. Home eNodeB as claimed in claims 6 or 7, is characterized in that, described WiFi module, specifically for measuring the time deviation between described Home eNodeB and described main Home eNodeB according to the synchronizing information got in the following manner:
According to the synchronizing information got, obtain the very first time information T1 for representing the transmitting time that described main Home eNodeB is corresponding when sending described synchronizing information carried in described synchronizing information, and obtain the second temporal information T2 for representing the acquisition time that described Home eNodeB is corresponding when getting described synchronizing information from described main Home eNodeB;
To described master's house front yard base station feedback first packet, in described first packet, carry the 3rd temporal information T3 for representing to feedback time corresponding during described master's house front yard base station feedback the first packet;
Receiving the second packet of described master's house front yard base station feedback, in described second packet, carrying the 4th temporal information T4 for representing the feedback time that described main Home eNodeB is corresponding when feeding back the second packet to described Home eNodeB;
According to above-mentioned T1, T2, T3 and T4, obtain the time deviation D:D=1/2 [(T2-T1)+(T4-T3)] between described Home eNodeB and described main Home eNodeB by following formulae discovery.
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