CN102769859A - Method and device for debugging wireless system - Google Patents
Method and device for debugging wireless system Download PDFInfo
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- CN102769859A CN102769859A CN201110115165XA CN201110115165A CN102769859A CN 102769859 A CN102769859 A CN 102769859A CN 201110115165X A CN201110115165X A CN 201110115165XA CN 201110115165 A CN201110115165 A CN 201110115165A CN 102769859 A CN102769859 A CN 102769859A
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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
The invention discloses a method and a device for debugging a wireless system. The method comprises the following steps: directly connecting a base station base band unit eNB BBU and a terminal BBU in a wireless system; sending downstream time domain data by the eNB BBU to the terminal BBU; synchronizing a sending clock of the eNB BBU to an eNB BBU clock by the terminal BBU by utilizing the downstream time domain data, and then sending upstream time domain data to the eNB BBU, wherein the wireless system is debugged by the eNB BBU and the terminal BBU by utilizing the upstream time domain data and the domain time domain data. The method and the device provided by the invention can be used for more conveniently positioning the problems of the eNB BBU and the terminal BBU so as to guarantee the development progress and the product quality.
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 (Long Term Envolution; LTE) in the system; Relevant base band and RF processing unit comprise base station (Evolved Node B; ENB) Base Band Unit (BaseBand Unit, BBU), the Remote Radio Unit of eNB (Radio Remote Unit, RRU), terminal radio frequency unit and BBU unit, terminal.For descending, after eNB BBU handles, descending time domain data is sent to eNB RRU, undertaken sending through eating dishes without rice or wine after the conversion by eNB RRU; The terminal radio frequency unit carries out inverse transformation receive data through eating dishes without rice or wine after, gives terminal BBU then and handles accordingly, accomplishes whole descending process.Fig. 1 has shown in the LTE system of prior art that from the downlink processing flow chart of eNB BBU BBU to the terminal, as shown in Figure 1, step comprises:
The base band downlink processing is accomplished according to agreement in step 101:eNB BBU unit, and the descending time domain data after will handling sends eNB RRU to, and physical interface is generally the Optical Fiber Transmission interface;
Step 102:eNB RRU carries out digital-to-analogue conversion with descending time domain data in the unit, is modulated on the frequency points corresponding, and the downlink radio-frequency signal that obtains is sent through eating dishes without rice or wine, and physical interface is the wireless transmission interface, i.e. the Uu interface;
Step 103: the terminal radio frequency unit receives the downlink radio-frequency signal that the base station issues, be converted into descending time domain data after, send terminal BBU to, physical interface can be the various coffrets consistent with eNB BBU and eNB RRU interface;
Step 104: the descending time domain data that BBU unit, terminal receiving terminal radio frequency unit sends, accomplish downgoing baseband according to agreement and handle.
For up, up time domain data is successively through terminal BBU, terminal radio frequency unit, eNB RRU and eNB BBU.Fig. 2 has shown that BBU is to the up process chart of eNB BBU from the terminal in the LTE system of prior art, and as shown in Figure 2, step comprises:
Step 201: the up processing of base band is accomplished according to agreement in BBU unit, terminal, sends the up time domain data that obtains after handling to the terminal radio frequency unit, and physical interface can be the various coffrets consistent with eNB BBU and eNB RRU interface;
Step 202: the up time domain data that the terminal radio frequency unit will receive carries out analog to digital conversion, and it is modulated to frequency points corresponding, and the up radiofrequency signal that will obtain sends through eating dishes without rice or wine, and physical interface is the wireless transmission interface, i.e. the Uu interface;
The up radiofrequency signal that step S203:eNB RRU unit receiving terminal sends is transformed to up time domain data with it and sends eNB BBU unit to;
Step S204:eNB BBU unit receives the up time domain data that eNB RRU unit sends, and accomplishes uplink baseband and handles, and so far eNB BBU unit finishes dealing with.
Wireless system is under this annexation; If each unit in the system all is in development, each unit is all unstable relatively, so in debug process since unsteadiness separately interact; 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 the R&D process and dealing with problems, increased the scope and time of orientation problem greatly, thereby delayed the 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, can solve the problem of wireless system positioning problems difficulty better.
According to an aspect of the present invention, a kind of wireless system adjustment method that provides comprises:
A) the base station baseband unit eNB BBU in the wireless system directly is connected with terminal BBU;
B) eNB BBU sends descending time domain data to terminal BBU;
C) terminal BBU utilizes said descending time domain data, is synchronized to its tranmitting data register on the eNB BBU clock, sends up time domain data to said eNB BBU again;
Wherein, said eNB BBU and said terminal BBU utilize said up time domain data and descending time domain data to carry out the wireless system debugging.
Further, said step C) be specially:
C1) terminal BBU receives descending time domain data, from these data, recovers row clock down;
C2) utilize said row clock down, obtain being used to send the tranmitting data register of up time domain data;
C3) utilize said tranmitting data register, up time domain data is sent to eNB BBU.
Further, said row clock down and eNB BBU clock are with frequently.
Further, said eNB BBU directly links to each other through optical fiber with terminal BBU.
According to a further aspect in the invention, provide a kind of wireless system debugging apparatus to comprise:
ENB BBU is used for sending descending time domain data to terminal BBU, and the up time domain data of receiving terminal BBU transmission, carries out the wireless system debugging;
Terminal BBU is used to receive said descending time domain data, is synchronized to its transmit clock on the eNB BBU clock, sends up time domain data to said eNB BBU again, carries out the wireless system debugging.
Further, said terminal BBU comprises:
Clock recovery unit is used to receive descending time domain data, and from these data, recovers row clock down;
The tranmitting data register generation unit is used to utilize said row clock down, obtains being used to send the tranmitting data register of up time domain data;
Data transmission unit is used to utilize said tranmitting data register, and up time domain data is sent to eNB BBU.
Further, said row clock down and eNB BBU clock are with frequently.
Further, said eNB BBU directly links to each other through optical fiber with terminal BBU.
Compared with prior art, beneficial effect of the present invention is: the present invention can conveniently locate the problem beyond the radio frequency through accomplishing not with the test of radio frequency part, guarantees the progress and the product quality of research and development; Early stage the BBU development do not receive the restriction of radio frequency unit research and development progress, improve efficiency of research and development; Simultaneously, adopt the method for the invention, when adding L2, L3 and core net, can insert equally and Business Processing in system.
Description of drawings
Fig. 1 is from the downlink processing flow chart of eNB BBU BBU to the terminal in the LTE system of prior art;
Fig. 2 be in the LTE system of prior art from the terminal BBU to the up process chart of eNB BBU;
Fig. 3 is the wireless system adjustment method flow chart that the embodiment of the invention provides;
Fig. 4 is the tranmitting data register product process figure that the embodiment of the invention provides;
Fig. 5 is the wireless system debugging apparatus structure chart that the embodiment of the invention provides;
Fig. 6 is the application of wireless system adjustment method in existing LTE system that the embodiment of the invention provides;
Fig. 7 is the terminal BBU structure chart that the embodiment of the invention provides.
Embodiment
, should be appreciated that following illustrated preferred embodiment only is used for explanation and explains the present invention, and be not used in qualification the present invention a preferred embodiment of the present invention will be described in detail below in conjunction with accompanying drawing.
Fig. 3 has shown the wireless system adjustment method flow chart that the embodiment of the invention provides, and as shown in Figure 3, step comprises:
Step 301: the eNB BBU in the wireless system directly is connected with terminal BBU.
Step 302:eNB BBU sends descending time domain data to terminal BBU;
Step 303: terminal BBU utilizes said descending time domain data, is synchronized to its tranmitting data register on the eNB BBU clock, sends up time domain data to said eNB BBU again;
Wherein, said eNB BBU and said terminal BBU utilize said up time domain data and descending time domain data to carry out the wireless system debugging.
In the above-mentioned steps 301, said eNB Base Band Unit directly links to each other through optical fiber with terminal BBU.
In the above-mentioned steps 302, eNB BBU carries out the base band downlink processing according to agreement, and sends the descending time domain data that obtains after the processing to terminal BBU through physical interface.Said physical interface is the various coffrets consistent with eNB BBU interface.
Owing to do not have eNB RRU and terminal radio frequency unit among the present invention, and the terminal must be synchronous with eNB in the system, therefore needs the tranmitting data register of terminal BBU necessary synchronous fully with eNB BBU, otherwise transfer of data can be made mistakes.Therefore, in above-mentioned steps 303, terminal BBU recovers row clock down from the descending time domain data that receives, and utilizes said row clock down to obtain being used to send the tranmitting data register of up time domain data, and up time domain data is sent to terminal BBU.That is to say that the said row clock down that terminal BBU will recover is as its tranmitting data register, rather than use terminal local clock is as tranmitting data register.Since use be and eNB with tranmitting data register frequently, therefore guaranteed the synchronous of tranmitting data register that the terminal is up and eNB, thereby guaranteed the correct transmission of data.
Said row clock down is and descending time domain data clock synchronized, promptly with the clock of eNB BBU clock with frequency.
Terminal BBU receive descending time domain data go forward side by side row clock synchronously after, carry out the base band downlink processing, said base band downlink processing comprises resolves said descending time domain data, promptly carries out demodulation to wireless system is descending.Up for base band, terminal BBU carries out the up processing of base band according to agreement, and the up time domain data that will obtain is sent to eNB BBU through physical interface.ENB BBU receives said up time domain data, carries out the up processing of base band, and the up processing of said base band comprises resolves said up time domain data, promptly carries out demodulation to wireless system is up.
Fig. 4 has shown the tranmitting data register product process figure that the embodiment of the invention provides, and is as shown in Figure 4, and terminal BBU unit tranmitting data register and the synchronous performing step of eNB BBU comprise:
Step 401: terminal BBU receives the descending time domain data that eNB BBU sends, and from these data, recovers the following row clock with data sync, promptly with the clock of eNB BBU with frequently;
Step 402: the said row clock down that terminal BBU will recover is as its tranmitting data register;
Step 403: terminal BBU is sent to eNB BBU with up time domain data.
Because terminal BBU has used and the tranmitting data register of eNB clock with frequency, has therefore guaranteed the clock synchronization of up tranmitting data register in terminal and eNB, thereby has guaranteed the correct transmission of data.
Fig. 5 has shown the wireless system debugging apparatus structure chart that the embodiment of the invention provides, and is as shown in Figure 5, comprises direct-connected eNB BBU and terminal BBU:
Said eNB BBU is used for sending descending time domain data to terminal BBU, and the up time domain data that utilizes terminal BBU to send, and carries out the wireless system debugging.That is to say that eNB BBU is used to carry out the data processing of eNB baseband portion, accomplish the debugging of wireless system base band uplink and downlink.
Terminal BBU is used to utilize said descending time domain data, is synchronized to its transmit clock on the eNB BBU clock, sends up time domain data to said eNB BBU again, accomplishes the wireless system debugging.That is to say that terminal BBU is used to carry out the data processing of terminal baseband portion, accomplish the debugging of wireless system base band uplink and downlink.
ENB BBU and the direct-connected networking mode of terminal BBU are at BBU a kind of networking mode at research and development initial stage, are used for improving the efficient of research and development debug process orientation problem, reduce the problem of the BBU debug time prolongation that causes because of the radio frequency part performance.The step of system debug comprises:
Step 501: build system, use optical fiber that eNB BBU directly is connected with terminal BBU, promptly wherein do not comprise the radio frequency part of eNBRRU and terminal radio frequency unit;
Step 502:eNB BBU carries out the base band downlink processing according to agreement, obtains descending time domain data, and through the light mouth these data is sent to terminal BBU;
Step 503: terminal BBU receives said descending time domain data from its light mouth, and from these data, recovers and the same following row clock frequently of the clock of eNB BBU;
Step 504: terminal BBU will descend row clock as its tranmitting data register;
Step 505: terminal BBU utilizes said descending time domain data, carries out the base band downlink processing, accomplishes the descending debugging of wireless system base band;
Step 506: terminal BBU carries out the up processing of base band according to agreement, and utilizes said tranmitting data register, and the up time domain data that will obtain through its light mouth is sent to eNB BBU;
Step 507:eNB BBU receives said up time domain data from its light mouth, carries out the up processing of base band, accomplishes the up debugging of wireless system base band.
Present embodiment is the BBU debugging at research and development initial stage, owing to do not have radio frequency part in the wireless system, therefore can not occur between eNBBBU and the eNB RRU, and the signaling communication between terminal BBU and the terminal radio frequency unit.
Fig. 6 has shown the application of wireless system adjustment method in existing LTE system that the embodiment of the invention provides, and as shown in Figure 6, existing LTE system comprises eNB BBU, eNB RRU, terminal radio frequency unit and terminal BBU.In the later development process, in order better to locate the problem of BBU or the problem of RRU, use method of the present invention, the practical implementation step is following:
Step 601: eNB BBU directly is connected with optical fiber with terminal BBU, promptly in debug process, removes the radio frequency part that comprises eNB RRU and terminal radio frequency unit of existing LTE system;
Step 602: terminal BBU receives the descending time domain data that eNB BBU sends from its light mouth;
Step 603: terminal BBU recovers down row clock from said descending time domain data, and the clock of this clock and eNB BBU is with frequently;
Step 604: terminal BBU with said down row clock as its tranmitting data register;
Step 605: terminal BBU utilizes said descending time domain data, carries out the base band downlink processing, accomplishes the descending debugging of wireless system base band;
Step 605: terminal BBU sends to eNB BBU with up time domain data through the light mouth, makes eNB BBU utilize said up time domain data to accomplish the up debugging of wireless system base band.
Fig. 7 has shown the terminal BBU structure chart that the embodiment of the invention provides, and is as shown in Figure 7, comprising:
Clock recovery unit is used to receive the descending time domain data that eNB BBU sends, and from these data, recovers with eNB clock synchronized;
The tranmitting data register generation unit is used for the following row clock that recovers that is to say not to be the local clock that uses the terminal as its tranmitting data register;
Data transmission unit is used for up time domain data is sent.
In sum, the present invention accomplishes not with all tests of radio frequency through direct connection eNB BBU and terminal BBU, can locate the problem beyond the radio frequency timely and conveniently, reduces debug time, guarantees the progress and the product quality of research and development; In addition, also can be applied in other the wireless access system.
Although preceding text specify the present invention, the invention is not restricted to this, those skilled in the art of the present technique can carry out various modifications according to principle of the present invention.Therefore, all modifications of doing according to the principle of the invention all are to be understood that to falling into protection scope of the present invention.
Claims (8)
1. a wireless system adjustment method is characterized in that, comprising:
A) the base station baseband unit in the wireless system (eNB BBU) directly is connected with terminal Base Band Unit (terminal BBU);
B) eNB BBU sends descending time domain data to terminal BBU;
C) terminal BBU utilizes said descending time domain data, is synchronized to its tranmitting data register on the eNB BBU clock, sends up time domain data to said eNB BBU again;
Wherein, said eNB BBU and said terminal BBU utilize said up time domain data and descending time domain data to carry out the wireless system debugging.
2. wireless system adjustment method according to claim 1 is characterized in that, said step C) be specially:
C1) terminal BBU receives descending time domain data, from these data, recovers row clock down;
C2) utilize said row clock down, obtain being used to send the tranmitting data register of up time domain data;
C3) utilize said tranmitting data register, up time domain data is sent to eNB BBU.
3. wireless system adjustment method according to claim 2 is characterized in that, said row clock down and eNB BBU clock are with frequently.
4. wireless system adjustment method according to claim 1 is characterized in that, said eNB BBU directly links to each other through optical fiber with terminal BBU.
5. a wireless system debugging apparatus is characterized in that, comprising:
ENB BBU is used for sending descending time domain data to terminal BBU, and the up time domain data of receiving terminal BBU transmission, carries out the wireless system debugging;
Terminal BBU is used to receive said descending time domain data, is synchronized to its transmit clock on the eNB BBU clock, sends up time domain data to said eNB BBU again, carries out the wireless system debugging.
6. wireless system debugging apparatus according to claim 5 is characterized in that, said terminal BBU comprises:
Clock recovery unit is used to receive descending time domain data, and from these data, recovers row clock down;
The tranmitting data register generation unit is used to utilize said row clock down, obtains being used to send the tranmitting data register of up time domain data;
Data transmission unit is used to utilize said tranmitting data register, and up time domain data is sent to eNB BBU.
7. wireless system debugging apparatus according to claim 6 is characterized in that, said row clock down and eNB BBU clock are with frequently.
8. wireless system debugging apparatus according to claim 5 is characterized in that, said eNB BBU directly links to each other through 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 true CN102769859A (en) | 2012-11-07 |
| CN102769859B CN102769859B (en) | 2016-01-20 |
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Cited By (1)
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| WO2016095471A1 (en) * | 2014-12-18 | 2016-06-23 | 中兴通讯股份有限公司 | Test device and test method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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| CN1805566A (en) * | 2005-01-12 | 2006-07-19 | 华为技术有限公司 | Separated base station system and its networking method and baseband unit |
| CN101098328A (en) * | 2007-06-29 | 2008-01-02 | 中兴通讯股份有限公司 | Base band and RF system synchronization and time delay compensation process |
| US20080214124A1 (en) * | 2007-03-01 | 2008-09-04 | Fujitsu Limited | Wireless base station |
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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 |
| 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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- 2011-05-05 CN CN201110115165.XA patent/CN102769859B/en active Active
- 2011-09-22 WO PCT/CN2011/080064 patent/WO2012149765A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1805566A (en) * | 2005-01-12 | 2006-07-19 | 华为技术有限公司 | Separated base station system and its networking method and baseband unit |
| US20080214124A1 (en) * | 2007-03-01 | 2008-09-04 | Fujitsu Limited | Wireless base station |
| CN101098328A (en) * | 2007-06-29 | 2008-01-02 | 中兴通讯股份有限公司 | Base band and RF system synchronization and time delay compensation process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016095471A1 (en) * | 2014-12-18 | 2016-06-23 | 中兴通讯股份有限公司 | Test device and test method |
| CN105764073A (en) * | 2014-12-18 | 2016-07-13 | 中兴通讯股份有限公司 | Testing device and testing method |
Also Published As
| Publication number | Publication date |
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| WO2012149765A1 (en) | 2012-11-08 |
| CN102769859B (en) | 2016-01-20 |
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Effective date of registration: 20200727 Address after: 210012 Nanjing, Yuhuatai District, South Street, Bauhinia Road, No. 68 Patentee after: Nanjing Zhongxing Software Co.,Ltd. Address before: 518057 Nanshan District Guangdong high tech Industrial Park, South Road, science and technology, ZTE building, Ministry of Justice Patentee before: ZTE Corp. |