CN101035327A - Radio communication system and air interface synchronization method, base station and its controller - Google Patents
Radio communication system and air interface synchronization method, base station and its controller Download PDFInfo
- Publication number
- CN101035327A CN101035327A CNA2007100981267A CN200710098126A CN101035327A CN 101035327 A CN101035327 A CN 101035327A CN A2007100981267 A CNA2007100981267 A CN A2007100981267A CN 200710098126 A CN200710098126 A CN 200710098126A CN 101035327 A CN101035327 A CN 101035327A
- Authority
- CN
- China
- Prior art keywords
- base station
- signal
- play amount
- time
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a system of wireless communications system, space connector synchronization method, base station and its controller. The wireless communications system includes at least two base stations and the controller of base station. The two base stations receive the same lapped signal from the region terminal and record the time of receiving the signal separately. The control device of base station is used to obtain the time of receiving the signal from the two base stations. According to the time obtaining space connectors, interface offset of the two base stations is transmitted to base stations. The space interface offset is adjusted by the two base stations until it is synchronous. Using the resources of the existing wireless communication network, the synchronization of the space interface offset can be obtained effectively in the invention.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to wireless communication system, space connector synchronization method, base station and controller thereof.
Background technology
The air interface of the communications field (abbreviation is eated dishes without rice or wine, and also is referred to as wave point usually) is meant the interface between terminal and the Access Network, and it mainly is made up of physical layer, data link layer and network layer usually.Physical layer is the bottom of air interface, supports the transmission of bit stream on physical medium.Radio Resource control (RRC, Radio Resource Control) sublayer of the medium access control of physical layer and data link layer (MAC, Medium Access Control) sublayer and network layer links to each other.
Under the situation of not taking any simultaneous techniques, in the wireless network different base station in general eat dishes without rice or wine be nonsynchronous, and much promote the network of the Technology Need of network capacity based on an air interface synchronization.Such as under the network of an air interface synchronization: each sub-district covering overlapping area (zone that level is suitable) frequency collision probability is controlled; DFCA technology such as (Dynamic Frequency and Channel Allocation, dynamic frequency and channel allocation) is implemented, and can promote 40% above capacity under the tight multiplexing scene.Therefore the air interface synchronization technology plays an important role to the lifting of network performance.
Consult Fig. 1, a kind of method of prior art air interface synchronization adopts the GPS technology, its cardinal principle is a GPS to be installed receive synchronizer on each base station, adopts described GPS to receive synchronizer base station synchronization is arrived identical satellite, finally produces the synchronous technique effect of the whole network.Wherein, the synchronous purpose of GPS is the correction to radio frame phases, makes that all there is unified frame phase place all base stations in the system, accomplishes that promptly radio frames all in the system all has the synchronous starting point of a unification.The air interface synchronization technology of this GPS of utilization can be called synchronously hard.
In carrying out the invention process, the inventor finds to exist at least in the above-mentioned existing air interface synchronization technology following problem:
1) construction cost height.Because each base station all needs to install a cover GPS reception synchronizer in the synchro system, so the construction period is long, the cost height;
2) maintenance cost height.In case certain GPS reception synchronizer breaks down in the use, receives synchronizer itself, feeder line, base station single-board etc. such as GPS, then needs manually to safeguard.Need time cost and carry out manual maintenance one; Two need cost of labor; Three need material cost, cause the maintenance cost height.
Summary of the invention
The technical problem that embodiment of the present invention will solve is wireless communication system and the space connector synchronization method that provides a kind of convenience to realize that economically the base station air interface is synchronous respectively.
The technical problem that embodiment of the present invention will solve is to provide a kind of can the convenience to help to realize synchronous base station and the controller thereof of base station air interface economically respectively.
For solving the problems of the technologies described above, the purpose of embodiment of the present invention realizes by following first technical scheme:
A kind of wireless communication system is provided, comprises at least two base stations and base-station control apparatus, described at least two base stations are used for receiving the same signal that terminal sends in its covering overlapping area respectively, and write down the time of receiving described signal respectively; Described base-station control apparatus is used to obtain the described signal reception time of described at least two base stations record, obtains the side-play amount of described at least two base station air interfaces according to described time of reception, and is handed down to described base station; Wherein, described base station makes it synchronous according to the air interface of described at least two base stations of described side-play amount adjustment.
For solving the problems of the technologies described above, the purpose of embodiment of the present invention realizes by following second technical scheme:
A kind of space connector synchronization method is provided, comprises: at least two base stations receive same signal, and described signal is sent by the terminal of the covering overlapping area that is positioned at described two base stations at least; The time that described signal received in described at least two base stations record; According to the time that described signal is received in described at least two base stations, obtain the side-play amount of described at least two base station air interfaces; Air interface according to described at least two base stations of described side-play amount adjustment makes it synchronous.
For solving the problems of the technologies described above, the purpose of embodiment of the present invention realizes by following the 3rd technical scheme:
A kind of base station is provided, comprises monitoring unit, the unit that clocks, side-play amount acquiring unit and offset units, described monitoring unit is used to monitor second base station, receives to mail to described second signal of base station; The described unit that clocks is used to write down the time that described monitoring unit is received described signal; Described side-play amount acquiring unit is used to obtain the air interface side-play amount, and described side-play amount calculated according to the time of the described unit record of clocking and the described signal reception time of described second base station record; Described offset units is used for according to described side-play amount air interface being offset.
For solving the problems of the technologies described above, the purpose of embodiment of the present invention realizes by following the 4th technical scheme:
A kind of base station is provided, comprises signal receiving unit, clock unit and time reports the unit, described signal receiving unit is used to receive the signal that terminal sends in this base station and the second base station covering overlapping area; The described unit that clocks is used to write down the time that described signal receiving unit is received described signal; The described time reports the unit to be used for the time of the described unit record of clocking is reported base-station control apparatus, and the described signal reception time of described time that reports and described second base station record calculates the air interface side-play amount together.
For solving the problems of the technologies described above, the purpose of embodiment of the present invention realizes by following the 5th technical scheme:
A kind of base-station control apparatus is provided, comprise that time receiving element, side-play amount computing unit and side-play amount issue the unit, described time receiving element is used for receiving respectively the signal reception time that write down respectively first base station and second base station, and described signal is from the terminal in the described two base station covering overlapping areas; Described side-play amount computing unit is used for the time of reception according to described time receiving element reception, calculates the side-play amount of air interface between described first base station and second base station; Described side-play amount issues the unit and is used to issue side-play amount that described side-play amount computing unit calculates to described second base station.
More than first technical scheme as can be seen, because the terminal that adopts two base station covering overlapping areas is as time synchronization basic standard, receive the same signal that described covering overlapping area terminal sends respectively by two base stations, and write down the time that described signal receives, and then calculate the air interface side-play amount of two base stations by base-station control apparatus, thereby described base station can adjust two base station air interfaces according to described side-play amount and make it synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
More than second technical scheme as can be seen, send same signal to described two base stations owing to trigger described terminal, the time that receives described signal according to two base stations is calculated the air interface side-play amount of two base stations, thereby can adopt this side-play amount to adjust two base station air interfaces to make it synchronous, and then make the air interface of target BS all synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
More than the 3rd technical scheme as can be seen, because adopting state set unit that base station of the present invention second execution mode is set can receive and mail to second signal of base station, adopt monitoring unit to monitor described second signal of base station that mails to again, make the terminal of two base station covering overlapping areas can be used as time synchronization basic standard, the time of the same signal that the described covering overlapping area terminal that is received by the unit record of clocking of base station sends, and then after calculating the air interface side-play amount of two base stations, adopt the side-play amount acquiring unit to obtain described side-play amount, thereby described base station can adopt offset units to adjust two base station air interfaces according to described side-play amount to make it synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
More than the 4th technical scheme as can be seen, owing to adopt trigger element to trigger terminal transmission signal in this base station and the second base station covering overlapping area, the time of adopting the described signal of signal receiving unit again and receiving by the described unit record signal that clocks, the employing time reports the unit to be used for the time of described record is reported base-station control apparatus, make the terminal of two base station covering overlapping areas can be used as time synchronization basic standard, and then can calculate the air interface side-play amount of two base stations, thereby described second base station can adjust two base station air interfaces according to described side-play amount and make it synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
More than the 5th technical scheme as can be seen, owing to adopt trigger element to trigger terminal transmission signal in first base station and the second base station covering overlapping area, adopt monitoring indicating member again is provided with described second base station and can monitors and mail to described first signal of base station, make the terminal of two base station covering overlapping areas can be used as time synchronization basic standard, write down the time of the same signal of described covering overlapping area terminal transmission by two base stations, and then adopt described side-play amount computing unit to calculate the air interface side-play amount of two base stations, adopt side-play amount to issue the unit at last and issue described side-play amount, thereby described base station can adopt offset units to adjust two base station air interfaces according to described side-play amount to make it synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
Description of drawings
Fig. 1 is the air interface synchronization system schematic that prior art adopts the GPS technology;
Fig. 2 is the flow chart of space connector synchronization method second execution mode of the present invention;
Fig. 3 utilizes method shown in Figure 2 to realize the synchronous system schematic of the whole network;
Fig. 4 is the schematic diagram of wireless communication system second execution mode of the present invention;
Fig. 5 is the structural representation of base station of the present invention the 3rd execution mode;
Fig. 6 is the structural representation of base station of the present invention the 4th execution mode;
Fig. 7 is the structural representation of base-station control apparatus second execution mode of the present invention;
Fig. 8 is the structural representation of base-station control apparatus the 3rd execution mode of the present invention;
Fig. 9 is the structural representation of base-station control apparatus the 4th execution mode of the present invention.
Embodiment
The invention provides wireless communication system first execution mode, comprise: at least two base stations and base-station control apparatus, described at least two base stations are used for receiving the same signal that terminal sends in its covering overlapping area respectively, and write down the time of receiving described signal respectively; Described base-station control apparatus is used to obtain the described signal reception time of described at least two base stations record, obtains the side-play amount of described at least two base station air interfaces according to described time of reception, and is handed down to described base station; Wherein, described base station makes it synchronous according to the air interface of described at least two base stations of described side-play amount adjustment.
Above execution mode as can be seen, because the terminal that adopts two base station covering overlapping areas is as time synchronization basic standard, receive the same signal that described covering overlapping area terminal sends respectively by two base stations, and write down the time that described signal receives, and then calculate the air interface side-play amount of two base stations by base-station control apparatus, thereby described base station can adjust two base station air interfaces according to described side-play amount and make it synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
The invention provides space connector synchronization method first execution mode, comprising: at least two base stations receive same signal, and described signal is sent by the terminal of the covering overlapping area that is positioned at described two base stations at least; The time that described signal received in described at least two base stations record; According to the time that described signal is received in described at least two base stations, obtain the side-play amount of described at least two base station air interfaces; Air interface according to described at least two base stations of described side-play amount adjustment makes it synchronous.
Send same signal to described two base stations owing to trigger described terminal, the time that receives described signal according to two base stations is calculated the air interface side-play amount of two base stations, thereby can adopt this side-play amount to adjust two base station air interfaces to make it synchronous, and then make the air interface of target BS all synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
The invention provides base station first execution mode, comprising: monitoring unit, the unit that clocks, side-play amount acquiring unit and offset units, described monitoring unit is used to monitor second base station, receives to mail to described second signal of base station; The described unit that clocks is used to write down the time that described monitoring unit is received described signal; Described side-play amount acquiring unit is used to obtain the air interface side-play amount, and described side-play amount calculated according to the time of the described unit record of clocking and the described signal reception time of described second base station record; Described offset units is used for according to described side-play amount air interface being offset.
Because adopting state set unit that base station of the present invention second execution mode is set can receive and mail to second signal of base station, adopt monitoring unit to monitor described second signal of base station that mails to again, make the terminal of two base station covering overlapping areas can be used as time synchronization basic standard, the time of the same signal that the described covering overlapping area terminal that is received by the unit record of clocking of base station sends, and then after calculating the air interface side-play amount of two base stations, adopt the side-play amount acquiring unit to obtain described side-play amount, thereby described base station can adopt offset units to adjust two base station air interfaces according to described side-play amount to make it synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
The invention provides base station second execution mode, comprising: signal receiving unit, clock unit and time report the unit, and described signal receiving unit is used to receive the signal that terminal sends in this base station and the second base station covering overlapping area; The described unit that clocks is used to write down the time that described signal receiving unit is received described signal; The described time reports the unit to be used for the time of the described unit record of clocking is reported base-station control apparatus, and the described signal reception time of described time that reports and described second base station record calculates the air interface side-play amount together.
Owing to adopt trigger element to trigger terminal transmission signal in this base station and the second base station covering overlapping area, the time of adopting the described signal of signal receiving unit again and receiving by the described unit record signal that clocks, the employing time reports the unit to be used for the time of described record is reported base-station control apparatus, make the terminal of two base station covering overlapping areas can be used as time synchronization basic standard, and then can calculate the air interface side-play amount of two base stations, thereby described second base station can adjust two base station air interfaces according to described side-play amount and make it synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
The invention provides base-station control apparatus first execution mode, comprise: time receiving element, side-play amount computing unit and side-play amount issue the unit, described time receiving element is used for receiving respectively the signal reception time that write down respectively first base station and second base station, and described signal is from the terminal in the described two base station covering overlapping areas; Described side-play amount computing unit is used for the time of reception according to described time receiving element reception, calculates the side-play amount of air interface between described first base station and second base station; Described side-play amount issues the unit and is used to issue side-play amount that described side-play amount computing unit calculates to described second base station.
Owing to adopt trigger element to trigger terminal transmission signal in first base station and the second base station covering overlapping area, adopt monitoring indicating member again is provided with described second base station and can monitors and mail to described first signal of base station, make the terminal of two base station covering overlapping areas can be used as time synchronization basic standard, write down the time of the same signal of described covering overlapping area terminal transmission by two base stations, and then adopt described side-play amount computing unit to calculate the air interface side-play amount of two base stations, adopt side-play amount to issue the unit at last and issue described side-play amount, thereby described base station can adopt offset units to adjust two base station air interfaces according to described side-play amount to make it synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
For make purpose of the present invention, technical scheme, and advantage clearer, below with reference to the accompanying drawing execution mode that develops simultaneously, the present invention is described in more detail.
Embodiment of the present invention is that example is illustrated with the situation among the GSM mainly, other standard, and for example: CDMA, WCDMA, TD-CDMA or the like can analogize.For convenience of description, BSC and the BTS that lift among the GSM following base-station control apparatus and base station are example, in other embodiments, described base-station control apparatus and base station can be RNC among the WCDMA and NodeB or the like, in like manner, some nouns that this paper occurs can replace with the entity/equipment/device/unit of identical or similar functions equally, no longer superfluous chatting.
Consult Fig. 2, space connector synchronization method second execution mode of the present invention comprises step:
Step 201: the terminal of determining to be positioned at the covering overlapping area of at least two base stations;
In the present embodiment, the synchronous flow process of air interface is started by base-station control apparatus.Be synchronous the whole network, at first need synchronously wherein two base station: BTS1 and BTS2.For realizing the synchronous of air interface, present embodiment is a bridge by the terminal in the covering overlapping area of two base stations covering, final described two base stations synchronously.Specifically be the selection algorithm that adopts two base station covering overlapping area terminals, find the terminal that is positioned at described two base station covering overlapping areas.It is the coverage that this terminal is positioned at certain sub-district of certain sub-district of BTS1 and BTS2 simultaneously.
The terminal of described selection can be that the algorithm of selection is exemplified below near the terminal of base station mid point:
Base-station control apparatus is being selected under the intermediate terminals state, and the calling among the Cellt (sub-district that BTS1 covers) is observed, if receive measurement report in Cellt, comprises the downstream signal intensity of Cellt and Cellb (sub-district that BTS2 covers) in the report.If the downstream signal intensity difference of Cellt and Cellb is no more than " difference in signal strength thresholding ", then this situation is carried out record.If calling out in N continuous time judgement, certain have P time downstream signal intensity difference to meet the demands, the terminal of then selecting the terminal of this calling will determine as this step.Wherein: N is " a difference in signal strength observation frequency ", and P is " difference in signal strength continues number of times ".
After determining the terminal of described two base station covering overlapping areas, carry out following step 202 to 205 two base stations of the describing flow process that side-play amount obtains of eating dishes without rice or wine.Briefly, the flow process that described side-play amount is obtained is: base-station control apparatus uses the signal controlling algorithm earlier, allows certain terminal of two base station covering overlapping areas send signal, and makes two base stations can both receive the signal that this terminal sends; Right latter two base station reports the temporal information that receives described signal to give described base-station control apparatus, is write down and is calculated by base-station control apparatus, finally draws the skew of interface aloft of described two base stations.
Step 202: be in the state that can both receive described terminal signaling by issuing internal command so that described at least two base stations to be set in advance, trigger described terminal by following signaling then and send same signal to described two base stations;
Issue internal command by base-station control apparatus in advance and have identical frequency and colour coding with the T1 of carrier frequency separately, the T2 that described at least two base station BTS 1 and BTS2 are set, the described carrier frequency of one of them base station BTS 2 is used to monitor the carrier frequency of another base station BTS 1, and makes base station BTS 2 be in AB restituted signal state.Like this, described two base stations all are in the state that can both receive this signal.
Signaling triggers described terminal and sends same signal to described two base stations to the base station BTS of being monitored 1 under the base-station control apparatus then.The described signaling that issues can be a switching command.
Step 203: described terminal sends same signal to described at least two base stations;
After described terminal is received described switching command, send AB and insert signal to the base station BTS of being monitored 1; Simultaneously, base station BTS 2 can listen to described AB and insert signal.
Step 204: the time that described signal received in described at least two base stations record;
Described two base stations receive described AB respectively and insert signal, and write down the time of receiving described signal respectively, and can write down with frame number and bit skew is the described signal air interface time of reception of content.
Step 205:, obtain the side-play amount of described at least two base station air interfaces according to the time that described signal is received in described at least two base stations;
Base-station control apparatus receives from behind each self-recording AB access signal reception time of described two base stations, obtains the side-play amount of described two base station air interfaces through certain filtering algorithm.
Such as: the time of reception from base station BTS 1 is: (fn1, bit1), and wherein fn represents the frame number of radio frames, and bit represents the bit skew; And from the time of reception of base station BTS 2 be: (fn2, bit2), a kind of algorithm of side-play amount is so: get the difference of the frame number that described two base stations record and 1250 product, and get the bit skew that described two base stations record, described product and described bit are offset sum as described side-play amount.
That is: side-play amount=(fn1-fn2) * 1250+ (bit1-bit2).
Step 206: the air interface according to described at least two base stations of described side-play amount adjustment makes it synchronous.
Base-station control apparatus issues and calculates good side-play amount to base station BTS 2, and base station BTS 2 interrupts opportunity according to described side-play amount adjustment frame then, its air interface is displaced to the same with the air interface of described base station BTS 1; In another embodiment, base-station control apparatus also can issue and calculate good side-play amount to base station BTS 1, and base station BTS 1 interrupts opportunity according to described side-play amount adjustment frame then, its air interface is displaced to the same with the air interface of described base station BTS 2.
After the air interface of synchronously intact described two base stations, can continue the air interface of other base stations synchronously, the air interface of finishing all base stations under this BSC is synchronous.Consult Fig. 3, as described in step 207,208:
Step 207: with described base station of being monitored is center and benchmark, synchronously the air interface of other base stations around it;
Be center and benchmark promptly with base station BTS 1, adopt above-mentioned steps 201 to 206 air interface of other base stations on every side except that base station BTS 2 synchronously respectively, other base stations are meant other base stations on every side that covering overlapping area is arranged with BTS1 around described, such as (BTS1-BTS3; BTS1-BTS4...BTS1-BTS7), the first lap base station around the synchronising base station BTS1.
Step 208: be center and benchmark with the base station around described respectively, the air interface of other base stations around this base station synchronously is until finishing synchronously.
Respectively with around base station (such as BTS2) be center and benchmark, adopt respectively make a circle in 201 to 206 synchronous described base station (such as BTS2) weeks of above-mentioned steps in not synchronous base station.Such as with BTS2 have covering overlapping area around other base stations, as (BTS2-BTS8; BTS2-BTS9, BTS3-BTS10...BTS7-BTS19); Progressively expansion, it is synchronous to finish the whole network, such as (BTS8-BTS20; ...)
Wherein, for reaching higher air interface synchronization accuracy, can adopt following technology:
Before the side-play amount of at least two base station air interfaces of described acquisition, can comprise step:
A, repeat to send same signal and receive the step of the time of described signal, obtain interocclusal record when a plurality of, and handle, such as carrying out filtering or average to described at least two base stations and record; Or
Comprise after the side-play amount of B, at least two base station air interfaces of described acquisition: repeat to obtain the side-play amount of described at least two base station air interfaces, a plurality of side-play amounts that obtain are handled, filtering is average such as carrying out.
For realizing above-mentioned two kinds of schemes, can in step 202, issue the described destination channel of being monitored base station BTS 1 of signaling request terminal incision by base-station control apparatus, and the described response message of being monitored the described incision action of base station BTS 1 deferred delivery is given described terminal, trigger described terminal and continue to send described signal, promptly send a plurality of signals to described two base station BTS 1 and BTS2.Like this, just can obtain interocclusal record when a plurality of, perhaps obtain the side-play amount of a plurality of air interfaces, carry out filtering or average then respectively.
Such as:
If it is some to time of reception that base station BTS 1 and base station BTS 2 have reported, then calculate several side-play amounts after, remove maximum, minimum side-play amount, average then and obtain the side-play amount of utilizing this terminal finally to calculate;
Also can adopt that value that proportion is the highest in these side-play amounts (such as obtaining 10 deviants, 5 are 3230,2 and are 3231,1 and are 3233,1 to be 3229,1 be 3228, so directly use 3230 these deviants).
From as can be seen above, space connector synchronization method second execution mode of the present invention is owing to adopt step 201 to determine two base station BTS 1, the terminal of BTS2 covering overlapping area, in step 202 and 203, trigger described terminal and send same signal to described two base station BTS 1, BTS2, the time that receives described signal according to two base stations in step 204 and 205 is calculated the air interface side-play amount of two base stations, thereby can in step 206, adopt this side-play amount to adjust two base station air interfaces to make it synchronous, and then adopt step 207 and 208 to make the air interface of target BS all synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
Simultaneously, adopt time or the mean value of side-play amount or the method that employing is carried out filtering to the time or the side-play amount of a plurality of records of getting a plurality of records, make the side-play amount accuracy that finally obtains be guaranteed the better effects if that air interface is synchronous.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the said method execution mode is to instruct relevant hardware to finish by program, described program can be stored in the computer read/write memory medium, this program is when carrying out, can comprise the steps: that at least two base stations receive same signal, described signal is sent by the terminal of the covering overlapping area that is positioned at described two base stations at least; Described terminal sends same signal to described at least two base stations; The time that described signal received in described at least two base stations record; According to the time that described signal is received in described at least two base stations, obtain the side-play amount of described at least two base station air interfaces; Air interface according to described at least two base stations of described side-play amount adjustment makes it synchronous.Here the alleged storage medium that gets, as: ROM/RAM, magnetic disc, CD etc.
Only for the explanation of the example of two base stations, in other embodiments, can there be three, four or the like base stations to carry out the synchronous scheme of air interface together in the embodiment of the present invention.In the scheme such as three base stations, can determine the terminal of these three base station covering overlapping areas, one of them base station as center and benchmark, the time that obtains this base station of being monitored and another base station record obtains side-play amount then, side-play amount is issued to two base stations as monitoring side, the air interface of adjusting these two base stations then make its all with the base station synchronization of being monitored, can realize that three base stations carry out the synchronous function of air interface together.
Consult Fig. 4, wireless communication system the 3rd execution mode of the present invention comprises base-station control apparatus 410 and two base stations 420,430 that have under its command thereof.One of described base station 420 comprises trigger element 421, and 2 430 of base station comprises state set unit 431.Described base-station control apparatus 410 comprises time statistic unit 411.
Described two base stations 420,430 are used for receiving the same signal that terminal sends in its covering overlapping area respectively, and write down the time of receiving described signal respectively.Signaling triggered described terminal and sends described signal under described trigger element 421 was used for, and can be that AB inserts signal; Described state set unit 431 is used to be provided with described base station 2 430 and is in the state that can receive described AB access signal.
Described base-station control apparatus 410 is used to obtain the described signal reception time of described two base stations 420,430 records, obtains the side-play amount of described two base station 420,430 air interfaces according to described time of reception, and is handed down to described base station 2 430.Described time statistic unit 411 is used to obtain when a plurality of interocclusal record and averages, and the side-play amount after average is used for obtaining of described side-play amount.
Wherein, its air interface is adjusted according to described side-play amount in described base station 2 430, makes itself and base station 1 synchronous.
From as can be seen above, wireless communication system second execution mode of the present invention since the terminal that adopts two base station covering overlapping areas as time synchronization basic standard, receive the same signal that described covering overlapping area terminal sends respectively by two base stations, and write down the time that described signal receives, and then calculate the air interface side-play amount of two base stations by base-station control apparatus, thereby described base station can adjust two base station air interfaces according to described side-play amount and make it synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
In another embodiment, described time statistic unit can be changed to the side-play amount statistic unit, is used to obtain a plurality of described side-play amounts and asks its mean value.
In another execution mode, base-station control apparatus 410 can and be handed down to described base station 1 with side-play amount.Its air interface is adjusted according to described side-play amount in described base station 1, makes itself and base station 2 430 synchronous.
Consult Fig. 5, base station of the present invention the 4th execution mode comprises state set unit 510, monitoring unit 520, the unit 530 that clocks, side-play amount acquiring unit 540 and offset units 550.
Described state set unit 510, be used to receive the internal command of base-station control apparatus, the frequency that this certain carrier frequency of base station is set according to described internal command is consistent with the frequency and the colour coding of described second certain carrier frequency of base station with colour coding, and this base station is set is in AB restituted signal state.
Described monitoring unit 520 is used for the setting according to described state set unit 510, monitors second base station, receives to mail to described second signal of base station.
The described unit 530 that clocks is used to write down the time of receiving described signal, and specifically being used to write down with frame number and bit skew is the described signal air interface time of reception of content.
Described side-play amount acquiring unit 540 is used to obtain the air interface side-play amount, and described side-play amount was calculated by the time of described this base station record and the described signal reception time of described second base station record.
Described offset units 550 is used for according to described side-play amount air interface being offset.
Above-mentioned base station second execution mode can be used in space connector synchronization method second execution mode of the present invention, monitors base station BTS 1 as base station BTS 2.
From as can be seen above, base station of the present invention second execution mode is owing to adopt state set unit 510 that base station of the present invention second execution mode is set can to receive and mail to second signal of base station, adopt monitoring unit 520 to monitor described second signal of base station that mails to again, make the terminal of two base station covering overlapping areas can be used as time synchronization basic standard, by the base station clock unit 530 recorders to time of the same signal that sends of described covering overlapping area terminal, and then after calculating the air interface side-play amount of two base stations, adopt side-play amount acquiring unit 540 to obtain described side-play amount, thereby described base station can adopt offset units 550 to adjust two base station air interfaces according to described side-play amount to make it synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
Consult Fig. 6, base station of the present invention the 3rd execution mode comprises trigger element 610, signal receiving unit 620, clock unit 630 and time reports unit 640.
Described trigger element 610 is used to issue hand off signaling and triggers this base station and the interior terminal transmission AB access signal of the second base station covering overlapping area.
Described signal receiving unit 620 is used to receive the AB that terminal sends in the described covering overlapping area and inserts signal.
The described unit 630 that clocks is used to write down receives that described AB inserts the time of signal.
The described time reports unit 640 to be used for the time of described record is reported base-station control apparatus, and the described signal reception time of described time that reports and described second base station record calculates the air interface side-play amount together.
Above-mentioned base station the 3rd execution mode can be used in space connector synchronization method second execution mode of the present invention, as the base station BTS of being monitored 1, monitored by base station BTS 2.
From as can be seen above, base station of the present invention second execution mode is owing to adopt trigger element 610 to trigger terminal transmission signal in this base station and the second base station covering overlapping area, the time of adopting signal receiving unit 620 described signals again and receiving by described unit 630 tracer signals that clock, the employing time reports unit 640 to be used for the time of described record is reported base-station control apparatus, make the terminal of two base station covering overlapping areas can be used as time synchronization basic standard, and then can calculate the air interface side-play amount of two base stations, thereby described second base station can adjust two base station air interfaces according to described side-play amount and make it synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
Consult Fig. 7, base-station control apparatus second execution mode of the present invention comprises that trigger element 710, monitoring indicating member 720, time receiving element 730, side-play amount computing unit 740 and side-play amount issue unit 750.
Described trigger element 710 is used for the terminal that signaling triggers in described first base station and the second base station covering overlapping area under first base station and sends signal, specifically is used to issue switching command and triggers described terminal transmission AB access signal.
Described monitoring indicating member 720 is used to issue internal command to described second base station, orders its frequency that described second base station is set consistent with the frequency and the colour coding of described first base station with colour coding, and second base station is set is in AB restituted signal state.
Described time receiving element 730 is used for receiving respectively the time of reception of the described signal that described first base station and second base station writes down respectively.
Described side-play amount computing unit 740 is used for the time of reception according to described first base station and second base station record, calculates the side-play amount of air interface between described first base station and second base station.
Described side-play amount issues unit 750 and is used to issue described side-play amount to described second base station.
From as can be seen above, base station of the present invention second execution mode is owing to adopt trigger element 710 to trigger terminal transmission signal in first base station and the second base station covering overlapping area, adopt monitoring indicating member 720 again is provided with described second base station and can monitors and mail to described first signal of base station, make the terminal of two base station covering overlapping areas can be used as time synchronization basic standard, write down the time of the same signal of described covering overlapping area terminal transmission by two base stations, and then adopt described side-play amount computing unit 740 to calculate the air interface side-play amount of two base stations, adopt side-play amount to issue unit 750 at last and issue described side-play amount, thereby described base station can adopt offset units to adjust two base station air interfaces according to described side-play amount to make it synchronous, do not need to adopt expensive synchronous Special Equipment and maintenance.The technological deficiency that causes construction cost and maintenance cost costliness with respect to the prior art employing synchronous air interface of GPS, the present invention utilizes the resource of prior wireless network to realize the purpose that the base station air interface is synchronous simply and effectively dexterously, reaches convenient economic technique effect.
Consult Fig. 8, in other embodiments, described base-station control apparatus also further comprises the time statistic unit, is used for respectively that interocclusal record averages to from described first and second base stations a plurality of the time, imports described side-play amount computing unit; Or
Consult Fig. 9, further comprise the side-play amount statistic unit, be used for a plurality of side-play amount values of averaging from described side-play amount computing unit are imported described side-play amount and issued the unit.
What deserves to be explained is, state set unit, monitoring unit, the unit that clocks, side-play amount acquiring unit and offset units in second execution mode of base station of the present invention can be integrated in the processing module, also can each unit individualism, also can two or two unit be integrated in the module; Each unit of base station in like manner of the present invention the 3rd execution mode, base-station control apparatus of the present invention second execution mode and wireless communication system of the present invention can be integrated in the processing module also can each unit individualism, also can two or two unit be integrated in the module.
What deserves to be explained is that also above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.Described integrated module both can be used as independently production marketing or when using, and also can be used as to be stored in the computer read/write memory medium.
More than a kind of wireless communication system provided by the present invention, space connector synchronization method, base station and controller thereof are described in detail by specific embodiment, the explanation of above embodiment just is used for help understanding method of the present invention and thought thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (22)
1. a wireless communication system is characterized in that, comprising:
At least two base stations are used for receiving the same signal that terminal sends in its covering overlapping area respectively, and write down the time of receiving described signal respectively,
Base-station control apparatus is used to obtain the described signal reception time that write down described at least two base stations, and obtain the side-play amount of described at least two base station air interfaces according to described time of reception, and be handed down to described base station,
Wherein, described base station makes it synchronous according to the air interface of described at least two base stations of described side-play amount adjustment.
2. wireless communication system according to claim 1 is characterized in that,
One of described base station further comprises: trigger element, and being used for down, signaling triggers described terminal transmission AB access signal;
Two of described base station further comprises: state set unit is used to be provided with described base station and is in the state that can receive described AB access signal.
3. wireless communication system according to claim 1 is characterized in that, described base-station control apparatus further comprises:
The time statistic unit is used to obtain when a plurality of interocclusal record and averages or filtering; Or
The side-play amount statistic unit is used to obtain a plurality of described side-play amounts and averages or filtering.
4. a base station is characterized in that, comprising:
Monitoring unit is used to monitor second base station, receives to mail to described second signal of base station,
The unit that clocks is used to write down the time that described monitoring unit is received described signal,
The side-play amount acquiring unit is used to obtain the air interface side-play amount, and described side-play amount calculated according to the time of the described unit record of clocking and the described signal reception time of described second base station record,
Offset units is used for according to described side-play amount air interface being offset.
5. base station according to claim 4 is characterized in that, further comprises:
State set unit, be used to receive the internal command of base-station control apparatus, the frequency that this certain carrier frequency of base station is set according to described internal command is consistent with the frequency and the colour coding of described second certain carrier frequency of base station with colour coding, and this base station is set is in AB restituted signal state.
6. base station according to claim 4 is characterized in that, the described unit that clocks specifically is used to write down the described signal air interface time of reception that comprises frame number and bit offset information.
7. a base station is characterized in that, comprising:
Signal receiving unit is used to receive the signal that terminal sends in this base station and the second base station covering overlapping area,
The unit that clocks is used to write down the time that described signal receiving unit is received described signal,
Time reports the unit, is used for the time of the described unit record of clocking is reported base-station control apparatus, and the described signal reception time of described time that reports and described second base station record calculates the air interface side-play amount together.
8. base station according to claim 7 is characterized in that, further comprises trigger element, and being used for down, signaling triggers the interior terminal transmission AB access signal of described covering overlapping area.
9. a base-station control apparatus is characterized in that, comprising:
The time receiving element is used for receiving respectively the signal reception time that write down respectively first base station and second base station, and described signal is from the terminal in the described two base station covering overlapping areas,
The side-play amount computing unit is used for the time of reception according to described time receiving element reception, calculates the side-play amount of air interface between described first base station and second base station,
Side-play amount issues the unit, is used to issue side-play amount that described side-play amount computing unit calculates to described second base station.
10. base-station control apparatus according to claim 9 is characterized in that, further comprises trigger element, is used for the terminal that signaling triggers in the described covering overlapping area under first base station and sends described signal.
11. base-station control apparatus according to claim 10 is characterized in that, described trigger element specifically is used to issue switching command and triggers described terminal transmission AB access signal.
12. base-station control apparatus according to claim 9, it is characterized in that, further comprise the monitoring indicating member, be used to issue internal command to described second base station, order its frequency that this base station is set consistent with the frequency and the colour coding of described first base station, and this base station is set is in AB restituted signal state with colour coding.
13. base-station control apparatus according to claim 9 is characterized in that, further comprises:
The time statistic unit is used for respectively that interocclusal record averages or filtering to from described first and second base stations a plurality of the time, imports described side-play amount computing unit; Or
The side-play amount statistic unit is used for a plurality of side-play amounts from described side-play amount computing unit are averaged or filtering, imports described side-play amount and issues the unit.
14. a space connector synchronization method is characterized in that, comprising:
At least two base stations receive same signal, and described signal is sent by the terminal of the covering overlapping area that is positioned at described two base stations at least;
The time that described signal received in described at least two base stations record;
According to the time that described signal is received in described at least two base stations, obtain the side-play amount of described at least two base station air interfaces;
Air interface according to described at least two base stations of described side-play amount adjustment makes it synchronous.
15. space connector synchronization method according to claim 14, it is characterized in that, described terminal sends same signal and comprised before the step of described at least two base stations: trigger described terminal by following signaling and send AB access signal, be in the state that can both receive this signal by issuing internal command so that described at least two base stations to be set.
16. space connector synchronization method according to claim 15, it is characterized in that, the method that at least two base stations of described setting are in the state that can both receive this signal comprises: the carrier frequency separately that described at least two base stations are set has identical frequency and colour coding, the described carrier frequency of one of them base station is used to monitor the carrier frequency of another base station, and makes it be in AB restituted signal state.
17. space connector synchronization method according to claim 16 is characterized in that, further comprises after synchronously:
With described base station of being monitored is center and benchmark, synchronously the air interface of other base stations around the described base station of being monitored;
Be center and benchmark with other base stations around described respectively, the air interface of other base stations around these base stations synchronously is until finishing synchronously.
18. space connector synchronization method according to claim 14 is characterized in that, described at least two base stations record receives that the time method of described signal comprises: record comprises the described signal air interface time of reception of frame number and bit offset information.
19. space connector synchronization method according to claim 18, it is characterized in that, the method of the side-play amount of at least two base station air interfaces of described acquisition comprises: get the difference of the frame number that described two base stations record and 1250 product, and get the bit skew that described two base stations record, described product and described bit are offset sum as described side-play amount.
20. space connector synchronization method according to claim 14 is characterized in that,
Comprise before the side-play amount of at least two base station air interfaces of described acquisition: repeat to send same signal to described at least two base stations with write down the step of the time of receiving described signal, obtain interocclusal record when a plurality of; Or
Comprise after the side-play amount of at least two base station air interfaces of described acquisition: repeat to obtain the side-play amount of described at least two base station air interfaces, average or filtering.
21. space connector synchronization method according to claim 20, it is characterized in that, the described method that allows terminal continue the same signal of transmission comprises: make the terminal incision described by the destination channel of monitoring base station, and the described response message of being monitored the described incision action of base station deferred delivery is given described terminal, triggers described terminal and continues to send described signal.
22. space connector synchronization method according to claim 14, it is characterized in that, described air interface according to described at least two base stations of described side-play amount adjustment comprises its synchronous method: one of them base station is adjusted frame according to described side-play amount and is interrupted opportunity, its air interface is displaced to the same with the air interface of described another base station.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100981267A CN101035327A (en) | 2007-04-13 | 2007-04-13 | Radio communication system and air interface synchronization method, base station and its controller |
| CN2007103002456A CN101188812B (en) | 2007-04-13 | 2007-12-17 | Wireless communication system, air interface synchronization method, base station and control device |
| CN201210018049.0A CN102595588B (en) | 2007-04-13 | 2007-12-17 | Wireless communication system, air interface synchronizing method, base stations and control device of base stations |
| EP08734051.9A EP2106157B1 (en) | 2007-04-13 | 2008-04-10 | Wireless communication system, air interface synchronizing method, base station and its controlling apparatus |
| PCT/CN2008/070693 WO2008125052A1 (en) | 2007-04-13 | 2008-04-10 | Wireless communication system, air interface synchronizing method, base station and its controlling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100981267A CN101035327A (en) | 2007-04-13 | 2007-04-13 | Radio communication system and air interface synchronization method, base station and its controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101035327A true CN101035327A (en) | 2007-09-12 |
Family
ID=38731577
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100981267A Pending CN101035327A (en) | 2007-04-13 | 2007-04-13 | Radio communication system and air interface synchronization method, base station and its controller |
| CN201210018049.0A Expired - Fee Related CN102595588B (en) | 2007-04-13 | 2007-12-17 | Wireless communication system, air interface synchronizing method, base stations and control device of base stations |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210018049.0A Expired - Fee Related CN102595588B (en) | 2007-04-13 | 2007-12-17 | Wireless communication system, air interface synchronizing method, base stations and control device of base stations |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN101035327A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008125052A1 (en) * | 2007-04-13 | 2008-10-23 | Huawei Technologies Co., Ltd. | Wireless communication system, air interface synchronizing method, base station and its controlling apparatus |
| WO2009097812A1 (en) * | 2008-01-31 | 2009-08-13 | Huawei Technologies Co., Ltd. | Wireless communication system, method for adjusting air-interfaces synchronously, base station and control device thereof |
| CN103152304A (en) * | 2011-12-07 | 2013-06-12 | 福建联拓科技有限公司 | Digital private mobile radio (DPMR) late entry method and device |
| CN103229567A (en) * | 2012-12-26 | 2013-07-31 | 华为技术有限公司 | Air interface synchronization method and related device |
| CN103797870A (en) * | 2013-07-01 | 2014-05-14 | 华为技术有限公司 | Air interface synchronization method, base stations, control device and wireless communication system |
| CN103797869A (en) * | 2013-07-01 | 2014-05-14 | 华为技术有限公司 | Air interface synchronizing method, base station and control device thereof, and wireless communication system |
| WO2015066913A1 (en) * | 2013-11-11 | 2015-05-14 | 华为技术有限公司 | Method and device for sending signalling synchronously by multiple sectors |
| CN105407525A (en) * | 2014-09-12 | 2016-03-16 | 中国移动通信集团公司 | Air interface synchronization reconstruction method, device and base station |
| CN105897330A (en) * | 2016-04-01 | 2016-08-24 | 严炜 | Signal synchronization method used for UWB high-precision positioning system |
| CN107431534A (en) * | 2015-02-13 | 2017-12-01 | 英国电讯有限公司 | Base station time synchronism in wireless network |
| CN107580366A (en) * | 2017-07-27 | 2018-01-12 | 成都理工大学 | Personnel based on more Wi-Fi hotspot trunkings are distributed methods of investigation |
| US9980242B2 (en) | 2013-07-01 | 2018-05-22 | Huawei Technologies Co., Ltd. | Air-interface-based synchronization method, base station, control apparatus, and wireless communications system |
| CN108184264A (en) * | 2017-12-26 | 2018-06-19 | 四川九洲电器集团有限责任公司 | Tactical data link system dynamic networking implementation method based on TDMA |
| CN108260200A (en) * | 2018-02-27 | 2018-07-06 | 广州钟鼎木林网络技术有限公司 | The method and system that a kind of more synchronisation sources synchronize |
| CN108702716A (en) * | 2016-02-29 | 2018-10-23 | 华为技术有限公司 | Method for synchronizing time, equipment and system |
| CN108713334A (en) * | 2016-03-15 | 2018-10-26 | 华为技术有限公司 | Synchronous method, equipment between a kind of base station |
| WO2023125279A1 (en) * | 2021-12-31 | 2023-07-06 | 华为技术有限公司 | Time calibration method and apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014205663A1 (en) * | 2013-06-26 | 2014-12-31 | 华为技术有限公司 | Timing synchronization method and apparatus, user equipment, and communications system |
| CN108235426B (en) * | 2016-12-15 | 2021-01-15 | 中国移动通信有限公司研究院 | Method, device and system for detecting time delay and local time difference between terminals |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU4297999A (en) * | 1998-04-24 | 1999-11-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Absolute time synchronization for mobile positioning in a cellular communications system |
| CN100568761C (en) * | 2005-01-31 | 2009-12-09 | 株式会社日立国际电气 | Inter-base station synchronizing system and method |
| CN100518019C (en) * | 2005-07-26 | 2009-07-22 | 中兴通讯股份有限公司 | Space interface synchronous method |
-
2007
- 2007-04-13 CN CNA2007100981267A patent/CN101035327A/en active Pending
- 2007-12-17 CN CN201210018049.0A patent/CN102595588B/en not_active Expired - Fee Related
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101188812B (en) * | 2007-04-13 | 2012-01-25 | 华为技术有限公司 | Wireless communication system, air interface synchronization method, base station and control device |
| WO2008125052A1 (en) * | 2007-04-13 | 2008-10-23 | Huawei Technologies Co., Ltd. | Wireless communication system, air interface synchronizing method, base station and its controlling apparatus |
| WO2009097812A1 (en) * | 2008-01-31 | 2009-08-13 | Huawei Technologies Co., Ltd. | Wireless communication system, method for adjusting air-interfaces synchronously, base station and control device thereof |
| CN101232325B (en) * | 2008-01-31 | 2013-01-09 | 华为技术有限公司 | Radio communication system, midair interface synchronism control method, base station and control device thereof |
| CN103152304A (en) * | 2011-12-07 | 2013-06-12 | 福建联拓科技有限公司 | Digital private mobile radio (DPMR) late entry method and device |
| CN103152304B (en) * | 2011-12-07 | 2015-06-03 | 福建联拓科技有限公司 | Digital private mobile radio (DPMR) late entry method and device |
| WO2014100982A1 (en) * | 2012-12-26 | 2014-07-03 | 华为技术有限公司 | Air interface synchronization method and apparatus therefor |
| CN103229567A (en) * | 2012-12-26 | 2013-07-31 | 华为技术有限公司 | Air interface synchronization method and related device |
| CN103797870A (en) * | 2013-07-01 | 2014-05-14 | 华为技术有限公司 | Air interface synchronization method, base stations, control device and wireless communication system |
| WO2015000102A1 (en) * | 2013-07-01 | 2015-01-08 | 华为技术有限公司 | Air interface synchronization method, base station, control apparatus and wireless communication system |
| CN103797869A (en) * | 2013-07-01 | 2014-05-14 | 华为技术有限公司 | Air interface synchronizing method, base station and control device thereof, and wireless communication system |
| CN103797869B (en) * | 2013-07-01 | 2018-03-13 | 华为技术有限公司 | Method, base station, control device and the wireless communication system of air interface synchronization |
| US9980242B2 (en) | 2013-07-01 | 2018-05-22 | Huawei Technologies Co., Ltd. | Air-interface-based synchronization method, base station, control apparatus, and wireless communications system |
| WO2015066913A1 (en) * | 2013-11-11 | 2015-05-14 | 华为技术有限公司 | Method and device for sending signalling synchronously by multiple sectors |
| CN105407525A (en) * | 2014-09-12 | 2016-03-16 | 中国移动通信集团公司 | Air interface synchronization reconstruction method, device and base station |
| CN105407525B (en) * | 2014-09-12 | 2019-01-01 | 中国移动通信集团公司 | The method, apparatus and base station that a kind of air interface synchronization is rebuild |
| CN107431534A (en) * | 2015-02-13 | 2017-12-01 | 英国电讯有限公司 | Base station time synchronism in wireless network |
| CN108702716A (en) * | 2016-02-29 | 2018-10-23 | 华为技术有限公司 | Method for synchronizing time, equipment and system |
| CN108713334A (en) * | 2016-03-15 | 2018-10-26 | 华为技术有限公司 | Synchronous method, equipment between a kind of base station |
| US10764848B2 (en) | 2016-03-15 | 2020-09-01 | Huawei Technologies Co., Ltd. | Inter-base-station synchronization method and device |
| CN105897330A (en) * | 2016-04-01 | 2016-08-24 | 严炜 | Signal synchronization method used for UWB high-precision positioning system |
| CN107580366A (en) * | 2017-07-27 | 2018-01-12 | 成都理工大学 | Personnel based on more Wi-Fi hotspot trunkings are distributed methods of investigation |
| CN107580366B (en) * | 2017-07-27 | 2020-03-10 | 成都理工大学 | Personnel distribution investigation method based on multi-WiFi hotspot relay equipment |
| CN108184264A (en) * | 2017-12-26 | 2018-06-19 | 四川九洲电器集团有限责任公司 | Tactical data link system dynamic networking implementation method based on TDMA |
| CN108260200A (en) * | 2018-02-27 | 2018-07-06 | 广州钟鼎木林网络技术有限公司 | The method and system that a kind of more synchronisation sources synchronize |
| WO2023125279A1 (en) * | 2021-12-31 | 2023-07-06 | 华为技术有限公司 | Time calibration method and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102595588B (en) | 2014-11-05 |
| CN102595588A (en) | 2012-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101035327A (en) | Radio communication system and air interface synchronization method, base station and its controller | |
| CN1115904C (en) | Mobile communication system, communication control method and base station and mobile station used thereof | |
| CN1088949C (en) | Method of forward power control using reasure indicator bit | |
| CN1926778A (en) | CDMA receiving apparatus and method | |
| CN1806455A (en) | Method for synchronization in a mobile radio terminal | |
| CN101232325B (en) | Radio communication system, midair interface synchronism control method, base station and control device thereof | |
| CN1925687A (en) | Method and apparatus for fast and effecient handover at link layer of wireless LAN | |
| CN1732639A (en) | Radio communication system, communication terminal device, base station device, and radio communication method | |
| CN1930796A (en) | System and method for periodic ranging in sleep mode in broadband wireless access communication system | |
| CN1650547A (en) | Transmission power control method and base station device | |
| CN1170375C (en) | Rodio communication device and radio communication method | |
| CN1918824A (en) | Method and apparatus for performing fast handover through fast ranging in a broadband wireless communication system | |
| CN1184582A (en) | Method and apparatus for adaptive channel allocation with power control in a mobile communications system | |
| CN101064899A (en) | Method for measuring adjacent cell and user terminal | |
| CN1882185A (en) | Mobile communication system, mobile terminal and mobile terminal transmission scheduling method | |
| CN101064865A (en) | Method and apparatus for resource scheduling of cellular mobile communication system | |
| CN1852581A (en) | Method for transmitting data on downward link | |
| CN1698291A (en) | Apparatus and method for controlling a reverse traffic rate in a mobile communication system | |
| CN1311576A (en) | Communication device and transmitting power control method | |
| CN1893313A (en) | Method for defining up-converter channel impact responding and multi-user united detection method | |
| CN1859675A (en) | Frequency correcting method and device | |
| CN1285661A (en) | Method for improving property of mobile radio communication system by power control algorithm | |
| CN1148903C (en) | Orthogonal frequency-division multiplex communication apparatus and method | |
| CN1279706C (en) | Mobile communication system, radio base station control system and radio base station control method | |
| CN1518367A (en) | Multi-band small range selection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |