CN102769859B - A kind of wireless system adjustment method and device - Google Patents
A kind of wireless system adjustment method and device Download PDFInfo
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- CN102769859B CN102769859B CN201110115165.XA CN201110115165A CN102769859B CN 102769859 B CN102769859 B CN 102769859B CN 201110115165 A CN201110115165 A CN 201110115165A CN 102769859 B CN102769859 B CN 102769859B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/06—Testing, supervising or monitoring using simulated traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/04—Interfaces between hierarchically different network devices
- H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface
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Abstract
Does the invention discloses a kind of wireless system adjustment method and device, method comprise: by the base station baseband unit eNB in wireless system? BBU is directly connected with terminal BBU; ENB? BBU sends descending time domain data to terminal BBU; Terminal BBU utilizes described descending time domain data, its tranmitting data register synchronized to eNB? on BBU clock, then to described eNB? BBU sends up time domain data; Wherein, described eNB? BBU and described terminal BBU utilizes described up time domain data and descending time domain data to carry out wireless system debugging.Can the present invention locate eNB more easily? the problem of BBU and terminal BBU, ensures progress and the product quality of research and development.
Description
Technical field
The present invention relates to the communications field, particularly a kind of wireless system adjustment method and device.
Background technology
At Long Term Evolution (LongTermEnvolution, LTE) in system, relevant base band and RF processing unit comprise base station (EvolvedNodeB, eNB) Base Band Unit (BaseBandUnit, BBU), the Remote Radio Unit (RadioRemoteUnit, RRU) of eNB, terminal radio frequency unit and terminal BBU unit.For descending, after eNBBBU processes, descending time domain data being sent to eNBRRU, sending by eating dishes without rice or wine after being converted by eNBRRU; Terminal radio frequency unit carries out inverse transformation receive data by eating dishes without rice or wine after, then gives terminal BBU and processes accordingly, completes whole descending process.Fig. 1 shows the downlink processing flow chart from eNBBBU to terminal BBU in the LTE system of prior art, and as shown in Figure 1, step comprises:
Step 101:eNBBBU unit completes base band downlink processing according to agreement, and sends the descending time domain data after process to eNBRRU, and physical interface is generally Optical Fiber Transmission interface;
Descending time domain data is carried out digital-to-analogue conversion by step 102:eNBRRU unit, and be modulated on corresponding frequency, and sent by eating dishes without rice or wine by the downlink radio-frequency signal obtained, physical interface is wireless transmission interface, i.e. Uu interface;
Step 103: terminal radio frequency unit receives the downlink radio-frequency signal that base station issues, and after being converted into descending time domain data, send terminal BBU to, physical interface can be the various coffrets consistent with eNBBBU and eNBRRU interface;
Step 104: the descending time domain data that terminal BBU unit receiving terminal radio frequency unit sends, completes downgoing baseband process according to agreement.
For up, up time domain data successively through terminal BBU, terminal radio frequency unit, eNBRRU and eNBBBU.Fig. 2 shows the up process chart from terminal BBU to eNBBBU in the LTE system of prior art, and as shown in Figure 2, step comprises:
Step 201: terminal BBU unit completes row relax in base band according to agreement, send the up time domain data obtained after process to terminal radio frequency unit, physical interface can be the various coffrets consistent with eNBBBU and eNBRRU interface;
Step 202: the up time domain data received is carried out analog to digital conversion by terminal radio frequency unit, be modulated to corresponding frequency, and sent by eating dishes without rice or wine by the upstream radio-frequency signal obtained, physical interface is wireless transmission interface, i.e. Uu interface;
The upstream radio-frequency signal that step S203:eNBRRU unit receiving terminal sends, is transformed to up time domain data and is sent to eNBBBU unit;
Step S204:eNBBBU unit receives the up time domain data that eNBRRU unit sends, and complete uplink baseband process, the so far process of eNBBBU unit completes.
Wireless system is under this annexation, if the unit in system is all in development, each unit is relatively unstable, so in debug process because respective unsteadiness interacts, very difficult location is the problem brought of the problem brought of Base-Band Processing or radio frequency processing or the performance issue of various piece, be unfavorable for locating in R&D process and dealing with problems, considerably increase the scope and time of orientation problem, thus delay research and development progress.
Summary of the invention
The object of the present invention is to provide a kind of wireless system adjustment method and device, the problem of wireless system positioning problems difficulty can be solved better.
According to an aspect of the present invention, a kind of wireless system adjustment method provided comprises:
A) the base station baseband unit eNBBBU in wireless system is directly connected with terminal BBU;
B) eNBBBU sends descending time domain data to terminal BBU;
C) terminal BBU utilizes described descending time domain data, and its tranmitting data register is synchronized on eNBBBU clock, then sends up time domain data to described eNBBBU;
Wherein, described eNBBBU and described terminal BBU utilizes described up time domain data and descending time domain data to carry out wireless system debugging.
Further, described step C) be specially:
C1) terminal BBU receives descending time domain data, from these data, recover downstream clock;
C2) utilizing described downstream clock, obtaining the tranmitting data register for sending up time domain data;
C3) utilize described tranmitting data register, up time domain data is sent to eNBBBU.
Further, described downstream clock and eNBBBU clock are with frequently.
Further, described eNBBBU is directly connected by optical fiber with terminal BBU.
According to a further aspect in the invention, provide a kind of wireless system debugging apparatus to comprise:
ENBBBU, for sending descending time domain data to terminal BBU, and the up time domain data that receiving terminal BBU sends, carry out wireless system debugging;
Terminal BBU, for receiving described descending time domain data, is synchronized to its transmit clock on eNBBBU clock, then sends up time domain data to described eNBBBU, carry out wireless system debugging.
Further, described terminal BBU comprises:
Clock recovery unit, for receiving descending time domain data, and recovers downstream clock from these data;
Tranmitting data register generation unit, for utilizing described downstream clock, obtains the tranmitting data register for sending up time domain data;
Data transmission unit, for utilizing described tranmitting data register, is sent to eNBBBU by up time domain data.
Further, described downstream clock and eNBBBU clock are with frequently.
Further, described eNBBBU is directly connected by optical fiber with terminal BBU.
Compared with prior art, beneficial effect of the present invention is: the present invention, by completing the test not with radio frequency part, conveniently can locate the problem beyond radio frequency, ensures progress and the product quality of research and development; Early stage BBU development by radio frequency unit research and development progress restriction, improve efficiency of research and development; Meanwhile, adopt the method for the invention, when system adds L2, L3 and core net, can carry out equally accessing and Business Processing.
Accompanying drawing explanation
Fig. 1 is the downlink processing flow chart from eNBBBU to terminal BBU in the LTE system of prior art;
Fig. 2 is the up process chart from terminal BBU to eNBBBU in the LTE system of prior art;
Fig. 3 is the wireless system adjustment method flow chart that the embodiment of the present invention provides;
Fig. 4 is the tranmitting data register product process figure that the embodiment of the present invention provides;
Fig. 5 is the wireless system debugging apparatus structure chart that the embodiment of the present invention provides;
Fig. 6 is the application of wireless system adjustment method in existing LTE system that the embodiment of the present invention provides;
Fig. 7 is the terminal BBU structure chart that the embodiment of the present invention provides.
Embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, should be appreciated that following illustrated preferred embodiment is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Fig. 3 shows the wireless system adjustment method flow chart that the embodiment of the present invention provides, and as shown in Figure 3, step comprises:
Step 301: the eNBBBU in wireless system is directly connected with terminal BBU.
Step 302:eNBBBU sends descending time domain data to terminal BBU;
Step 303: terminal BBU utilizes described descending time domain data, and its tranmitting data register is synchronized on eNBBBU clock, then sends up time domain data to described eNBBBU;
Wherein, described eNBBBU and described terminal BBU utilizes described up time domain data and descending time domain data to carry out wireless system debugging.
In above-mentioned steps 301, described eNB Base Band Unit is directly connected by optical fiber with terminal BBU.
In above-mentioned steps 302, eNBBBU carries out base band downlink processing according to agreement, and by descending time domain data that physical interface obtains after terminal BBU transmission processing.Described physical interface is the various coffrets consistent with eNBBBU interface.
Owing to there is no eNBRRU and terminal radio frequency unit in the present invention, and in system terminal must and eNB synchronous, therefore need terminal BBU tranmitting data register must and eNBBBU Complete Synchronization, otherwise transfer of data can be made mistakes.Therefore, in above-mentioned steps 303, terminal BBU recovers downstream clock from the descending time domain data received, and the tranmitting data register utilizing described downstream clock to obtain for sending up time domain data, up time domain data is sent to terminal BBU.That is, the described downstream clock recovered is used as its tranmitting data register by terminal BBU, instead of uses terminal local clock as tranmitting data register.Owing to using and the tranmitting data register of eNB with frequency, therefore ensure that the tranmitting data register of terminal uplink and the synchronous of eNB, thus ensure that the correct transmission of data.
Described downstream clock is the clock synchronous with descending time domain data, namely with the clock of eNBBBU clock with frequency.
Terminal BBU receive descending time domain data go forward side by side row clock synchronous after, carry out base band downlink processing, described base band downlink processing comprises resolves described descending time domain data, namely carries out demodulation to wireless system is descending.Up for base band, terminal BBU carries out row relax in base band according to agreement, and the up time domain data obtained is sent to eNBBBU by physical interface.ENBBBU receives described up time domain data, carries out row relax in base band, and the up process of described base band comprises resolves described up time domain data, namely carries out demodulation to wireless system is up.
Fig. 4 shows the tranmitting data register product process figure that the embodiment of the present invention provides, and as shown in Figure 4, terminal BBU unit tranmitting data register and the synchronous performing step of eNBBBU comprise:
Step 401: terminal BBU receives the descending time domain data that eNBBBU sends, and recovers the downstream clock with data syn-chronization from these data, namely frequently same with the clock of eNBBBU;
The described downstream clock recovered is used as its tranmitting data register by step 402: terminal BBU;
Up time domain data is sent to eNBBBU by step 403: terminal BBU.
Because terminal BBU employs and the tranmitting data register of eNB clock with frequency, therefore ensure that the clock synchronous of terminal uplink tranmitting data register and eNB, thus ensure that the correct transmission of data.
Fig. 5 shows the wireless system debugging apparatus structure chart that the embodiment of the present invention provides, and as shown in Figure 5, comprises the eNBBBU and terminal BBU that directly connect:
Described eNBBBU, for sending descending time domain data to terminal BBU, and the up time domain data utilizing terminal BBU to send, carry out wireless system debugging.That is, eNBBBU, for carrying out the data processing of eNB baseband portion, completes the debugging of wireless system base band uplink and downlink.
Terminal BBU, for utilizing described descending time domain data, is synchronized to its transmit clock on eNBBBU clock, then sends up time domain data to described eNBBBU, completes wireless system debugging.That is, terminal BBU, for carrying out the data processing of terminal baseband part, completes the debugging of wireless system base band uplink and downlink.
The networking mode that eNBBBU and terminal BBU are directly connected researches and develops a kind of networking mode at initial stage at BBU, for improving the efficiency of orientation problem in research and development debug process, reduces the problem that the BBU debug time that causes because of radio frequency part performance extends.The step of system debug comprises:
Step 501: build system, uses optical fiber to be directly connected with terminal BBU by eNBBBU, does not namely wherein comprise the radio frequency part of eNBRRU and terminal radio frequency unit;
Step 502:eNBBBU carries out base band downlink processing according to agreement, obtains descending time domain data, and by light mouth, these data is sent to terminal BBU;
Step 503: terminal BBU receives described descending time domain data from Qi Guangkou, and recovers from these data with the clock of eNBBBU with downstream clock frequently;
Step 504: terminal BBU using downstream clock as its tranmitting data register;
Step 505: terminal BBU utilizes described descending time domain data, carries out base band downlink processing, completes the descending debugging of wireless system base band;
Step 506: terminal BBU carries out row relax in base band according to agreement, and utilizes described tranmitting data register, by its light mouth, the up time domain data obtained is sent to eNBBBU;
Step 507:eNBBBU receives described up time domain data from Qi Guangkou, carries out row relax in base band, completes the up debugging of wireless system base band.
The present embodiment is that BBU researches and develops the debugging at initial stage, due in wireless system without radio frequency part, therefore to there will not be between eNBBBU and eNBRRU, and the signalling communication between terminal BBU and terminal radio frequency unit.
Fig. 6 shows the application of wireless system adjustment method in existing LTE system that the embodiment of the present invention provides, and as shown in Figure 6, existing LTE system comprises eNBBBU, eNBRRU, terminal radio frequency unit and terminal BBU.In later development process, in order to the problem of the problem or RRU of better locating BBU, use method of the present invention, concrete implementation step is as follows:
Step 601: be directly connected with terminal BBU optical fiber by eNBBBU, namely removes the radio frequency part comprising eNBRRU and terminal radio frequency unit of existing LTE system in debug process;
Step 602: terminal BBU receives the descending time domain data of eNBBBU transmission from Qi Guangkou;
Step 603: terminal BBU recovers downstream clock from described descending time domain data, and the clock of this clock and eNBBBU is with frequently;
Step 604: terminal BBU using described downstream clock as its tranmitting data register;
Step 605: terminal BBU utilizes described descending time domain data, carries out base band downlink processing, completes the descending debugging of wireless system base band;
Up time domain data is sent to eNBBBU by light mouth by step 605: terminal BBU, makes eNBBBU utilize described up time domain data to complete the up debugging of wireless system base band.
Fig. 7 shows the terminal BBU structure chart that the embodiment of the present invention provides, and as shown in Figure 7, comprising:
Clock recovery unit, for receiving the descending time domain data that eNBBBU sends, and recovers the clock synchronous with eNB from these data;
Tranmitting data register generation unit, for the downstream clock that will recover as its tranmitting data register, is not that is use the local clock of terminal;
Data transmission unit, for sending up time domain data.
In sum, the present invention completes all tests not with radio frequency by direct connection eNBBBU and terminal BBU, can locate the problem beyond radio frequency timely and conveniently, reduce debug time, ensures progress and the product quality of research and development; In addition, also can be applied in other wireless access system.
Although above to invention has been detailed description, the present invention is not limited thereto, those skilled in the art of the present technique can carry out various amendment according to principle of the present invention.Therefore, all amendments done according to the principle of the invention, all should be understood to fall into protection scope of the present invention.
Claims (6)
1. a wireless system adjustment method, is characterized in that, comprising:
A) by removing base station radio frequency remoter unit R RU and terminal radio frequency unit in wireless system in debug process, base station baseband unit eNBBBU in wireless system is directly connected with terminal baseband unit B BU;
B) described eNBBBU sends descending time domain data directly to described terminal BBU;
C) described terminal BBU utilizes described descending time domain data, and its tranmitting data register is synchronized on eNBBBU clock, then sends up time domain data directly to described eNBBBU;
Wherein, described eNBBBU and described terminal BBU utilizes described up time domain data and descending time domain data to carry out wireless system debugging;
Wherein, described step C) be specially:
C1) terminal BBU receives descending time domain data, from these data, recover downstream clock;
C2) utilizing described downstream clock, obtaining the tranmitting data register for sending up time domain data;
C3) utilize described tranmitting data register, up time domain data is sent to eNBBBU.
2. wireless system adjustment method according to claim 1, is characterized in that, described downstream clock and eNBBBU clock are with frequently.
3. wireless system adjustment method according to claim 1, is characterized in that, described eNBBBU is directly connected by optical fiber with terminal BBU.
4. a wireless system debugging apparatus, is characterized in that, comprising:
Base station baseband unit eNBBBU in wireless system; And
Terminal baseband unit B BU in wireless system; Wherein:
By removing base station radio frequency remoter unit R RU and terminal radio frequency unit in wireless system in debug process, described eNBBBU is directly connected with terminal BBU;
Described eNBBBU sends descending time domain data directly to terminal BBU;
Described terminal BBU utilizes described descending time domain data, and its transmit clock is synchronized on eNBBBU clock, then sends up time domain data directly to described eNBBBU;
Described eNBBBU and described terminal BBU utilizes described up time domain data and descending time domain data to carry out wireless system debugging;
Described terminal BBU comprises:
Clock recovery unit, for receiving descending time domain data, and recovers downstream clock from these data;
Tranmitting data register generation unit, for utilizing described downstream clock, obtains the tranmitting data register for sending up time domain data;
Data transmission unit, for utilizing described tranmitting data register, is sent to eNBBBU by up time domain data.
5. wireless system debugging apparatus according to claim 4, is characterized in that, described downstream clock and eNBBBU clock are with frequently.
6. wireless system debugging apparatus according to claim 4, is characterized in that, described eNBBBU is directly connected by optical fiber with terminal BBU.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110115165.XA CN102769859B (en) | 2011-05-05 | 2011-05-05 | A kind of wireless system adjustment method and device |
| PCT/CN2011/080064 WO2012149765A1 (en) | 2011-05-05 | 2011-09-22 | Debugging method and device for radio system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110115165.XA CN102769859B (en) | 2011-05-05 | 2011-05-05 | A kind of wireless system adjustment method and device |
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| CN102769859A CN102769859A (en) | 2012-11-07 |
| CN102769859B true CN102769859B (en) | 2016-01-20 |
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| US9055461B2 (en) * | 2013-03-28 | 2015-06-09 | Telefonaktiebolaget L M Ericsson (Publ) | Technique for troubleshooting remote cellular base station radios from the network management platform using local wireless hotspot at the radio site |
| US9191830B2 (en) | 2013-03-28 | 2015-11-17 | Telefonaktiebolaget L M Ericsson (Publ) | Local wireless connectivity for radio equipment of a base station in a cellular communications network |
| US9491162B2 (en) | 2013-03-28 | 2016-11-08 | Telefonaktiebolaget L M Ericsson (Publ) | Technique for controlling loss and theft of remote radio equipment in a cellular ad hoc network |
| CN105764073B (en) * | 2014-12-18 | 2021-04-16 | 中兴通讯股份有限公司 | Test apparatus and test method |
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| CN1564554A (en) * | 2004-04-16 | 2005-01-12 | 中兴通讯股份有限公司 | High speed base band data monitoring its simulating method and device |
| CN100426897C (en) * | 2005-01-12 | 2008-10-15 | 华为技术有限公司 | Separated base station system and its networking method and baseband unit |
| JP5029068B2 (en) * | 2007-03-01 | 2012-09-19 | 富士通株式会社 | Wireless base station |
| CN101098328B (en) * | 2007-06-29 | 2010-06-02 | 中兴通讯股份有限公司 | Base band and RF system synchronization and time delay compensation process |
| CN101360311B (en) * | 2007-07-30 | 2011-08-31 | 大唐移动通信设备有限公司 | Test maintaining system and method |
| CN201467461U (en) * | 2009-07-03 | 2010-05-12 | 大唐移动通信设备有限公司 | Base station equipment and base station maintenance system |
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| CN102769859A (en) | 2012-11-07 |
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