CN101188821B - Method for obtaining topology location of RF remote communication device, communication system and related device - Google Patents
Method for obtaining topology location of RF remote communication device, communication system and related device Download PDFInfo
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Abstract
The invention discloses a remote radio device topology position acquisition method and a communication system as well as the relevant devices thereof, and the invention is used for improving the setting efficiency of an ODU cascade connection. The method of the invention comprises the following steps: the remote radio device ODU receives the cascade connection setting request, and the cascade connection setting request carries cascade connection identification information; the cascade connection identification information in the cascade connection setting request is acquired, and the cascade connection identification information is used to identify the topology position of the ODU. The invention also provides the communication system and the relevant devices thereof.
Description
Technical field
The present invention relates to communication field, relate in particular to a kind of radio frequency extension apparatus method for obtaining topology location and communication system and relevant apparatus.
Background technology
Continuous development along with wireless communication networks, the user is also more and more higher to the requirement of the service quality of wireless telecommunications, tend to require under various environment, all can receive wireless signal, and some places that isolate relatively, for example indoor, ground is inferior, or spacious relatively place, highway for example, railway is along the line etc., only rely on base station transceiver (BTS, Base Transceiver Station) come the transmitting/receiving wireless signal will cause the bigger loss of signal, therefore can be by some radio frequency extension apparatus (ODU of cascade under BTS, Out Door Unit) to realize covering flexibly, as indoor, underground, and highway, railway is along the line, ODU need not the synchronous antenna feedback device of satellite simultaneously, especially being fit to the place that subway etc. is not easy to set up the synchronous antenna feedback of satellite uses, this networking mode is very many in actual applications, chain cascade system especially, as shown in Figure 1, under the BTS cascade three ODU, from left to right the cascade rank of ODU is respectively: the first order, the second level, the third level.
ODU below the same chain communicates by same transmission channel (physical layer of transmission channel can be an optical fiber etc.) and BTS, and ODU at different levels need identify the cascade position of self, and webmaster also needs the topological structure of ODU is managed concentratedly simultaneously.
ODU Cascading Methods of the prior art are: toggle switch is set on ODU, the BTS side is by the cascade position of data configuration ODU correspondence, ODU comes indicating self to belong to the cascade position of chain cascade according to the cascade position of the ODU correspondence of BTS configuration by toggle switch, finish the foundation of BTS with this to communication link between the ODU at different levels, with Fig. 1 is example, wherein, first order ODU is set to 1 with local toggle switch, second level ODU is set to 2 with local toggle switch, and third level ODU is set to 3 with local toggle switch.
But the toggle switch in the such scheme on the ODU need manually be stirred, so increased implementation complexity, when a plurality of ODU, may need just can finish configuration for a long time;
Secondly, manually stir toggle switch and may cause some unknowable mistakes, thereby might cause ODU cascade instability because of human factor;
Once more, the toggle switch on the ODU is generally a mechanical component, might lose efficacy after long-time the use, thereby cause the veneer link failure.
Summary of the invention
The embodiment of the invention provides a kind of radio frequency extension apparatus method for obtaining topology location and communication system and relevant apparatus, can improve the efficient that is provided with of ODU cascade.
The radio frequency extension apparatus method for obtaining topology location that the embodiment of the invention provides comprises: radio frequency extension apparatus ODU receives cascade request is set, and described cascade is provided with request and carries the cascade identification information; Obtain described cascade cascade identification information in the request is set, described cascade identification information is used to identify the topology location of described ODU.
The communication system that the embodiment of the invention provides comprises: base station transceiver, and be used to send cascade request is set, described cascade is provided with request and carries the cascade identification information; Radio frequency extension apparatus ODU is used to receive the cascade that described base station transceiver sends request is set, and obtains described cascade cascade identification information in the request is set, and described cascade identification information is used to identify the topology location of described ODU.
The base station transceiver that the embodiment of the invention provides comprises: the request generation unit, and be used to generate cascade request is set, described cascade is provided with request and carries the cascade identification information; Request transmitting unit is used for to the cascade that radio frequency extension apparatus transmission described request generation unit generates request being set.
The radio frequency extension apparatus that the embodiment of the invention provides comprises: receiving element, and be used to receive cascade request is set, described cascade is provided with request and carries the cascade identification information; Acquiring unit is used for from the cascade that described receiving element receives request being set and obtains the cascade identification information.
As can be seen from the above technical solutions, the embodiment of the invention has the following advantages:
In the embodiment of the invention, because ODU can receive cascade request is set, and chooses the cascade identification information of self answering according to the cascade identification information in this request, so can finish the cascade setting voluntarily, and do not need manually to be configured, thereby improved the efficient that is provided with of ODU cascade.
Description of drawings
Fig. 1 is an ODU cascade schematic diagram in the prior art;
Fig. 2 is the ODU method for obtaining topology location first embodiment flow chart in the embodiment of the invention;
Fig. 3 is the ODU method for obtaining topology location second embodiment flow chart in the embodiment of the invention;
Fig. 4 is a communication system embodiment schematic diagram in the embodiment of the invention;
Fig. 5 is a BTS embodiment schematic diagram in the embodiment of the invention;
Fig. 6 is an ODU embodiment schematic diagram in the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of radio frequency extension apparatus method for obtaining topology location and communication system and relevant apparatus, is used to improve the efficient that is provided with of ODU cascade.
In the embodiment of the invention, because ODU can receive cascade request is set, and chooses the cascade identification information of self answering according to the cascade identification information in this request, so can finish the cascade setting voluntarily, and do not need manually to be configured, thereby improved the efficient that is provided with of ODU cascade.
At first the ODU method for obtaining topology location embodiment in the embodiment of the invention is introduced, sees also Fig. 2, ODU method for obtaining topology location first embodiment comprises in the embodiment of the invention:
201, ODU receives cascade request is set;
In the present embodiment, the cascade that ODU receives the BTS transmission is provided with request, includes the cascade identification information in this request, and which grade cascade is used to indicate ODU current is, i.e. the topology location of ODU.
Need to prove, because ODU and BTS need communicate, so ODU need select the time slot corresponding identification information, thereby with this time slot mark information link corresponding on communicate with BTS, be understandable that, time slot mark information can be handed down to ODU by BTS, also can be when system initialization default configuration in ODU, all issuing time slot mark information with BTS among present embodiment and the follow-up embodiment is that example describes, in concrete the application, can take the mode of configuration time slot mark information in ODU in advance equally.
In the present embodiment, cascade is provided with and also comprises the time slot mark information sets in the request, includes the several slots identification information in this time slot mark information sets, and each the time slot mark information all concrete numerical value with the cascade identification information is corresponding one by one.
For the more specific description cascade is provided with the structure of request, provides an instantiation below and describe:
Table 1
| The cascade identification information | Time slot mark information 1 | Time slot mark information 2 | ...... |
From said structure as can be seen, what adopt in the present embodiment is that frame format is represented cascade identification information and time slot mark information sets, be understandable that, in actual application, can adopt the data structure of other types equally, as long as wherein include cascade identification information and time slot mark information sets.
202, ODU obtains cascade cascade identification information in the request is set;
ODU gets access to after cascade is provided with request, from this request, obtain the numerical value that the cascade identification information partly comprises, the numerical value of supposing the cascade identification information part in the table 1 is 1, and then ODU obtains cascade and request is set knows that current cascade identification information is 1, represents that promptly current cascade progression is 1 grade.
203, ODU inquiry cascade identification information time slot corresponding identification information;
Owing to include the several slots identification information in the time slot mark information sets, each the time slot mark information all concrete numerical value with the cascade identification information is corresponding one by one, so after ODU obtains out the cascade identification information, can in the time slot mark information sets, inquire about and this cascade identification information time slot corresponding identification information according to this cascade identification information.
The concrete numerical value of supposing the time slot mark information 1 in the table 1 is 0, the concrete numerical value of time slot mark information 2 is 2, and the cascade identification information is 1 o'clock, corresponding with time slot mark information 1, then to get access to the cascade identification information be 1 to ODU, is 0 so inquire the concrete numerical value of this cascade identification information time slot corresponding identification information.
204, ODU carries out the cascade setting to self;
After ODU gets access to cascade identification information and time slot mark information, self is carried out the cascade setting, specifically being provided with in the present embodiment can be for being stored in these two parameters in the local configuration information, be understandable that, can also be other set-up mode equally, the cascade progression of concrete this ODU of expression is 1 grade, and the time slot mark information value is 0.
205, ODU chooses link corresponding according to time slot mark information and communicates.
In the present embodiment, ODU is to after self carrying out cascade and being provided with, promptly can be according to time slot mark information inquiry link corresponding, and use this link and BTS to communicate, concrete inquiry link and the process of using link to communicate are prior art, repeat no more herein.
In the foregoing description, because can being provided with from the cascade that BTS sends, ODU extracts cascade identification information and time slot mark information sets the request, so can carry out the cascade setting to self, and not need manually to be configured, so improved the efficient that the ODU cascade is provided with.
For ease of understanding, describe with an instantiation below, be understandable that following example does not constitute qualification to present embodiment:
ODU gets access to after cascade is provided with request, from this request, obtain the numerical value 1 that the cascade identification information partly comprises, then ODU obtain cascade be provided with the request know that current cascade identification information is 1, represent that promptly current cascade progression is 1 grade, simultaneously, the concrete numerical value of the time slot mark information 1 in the time slot mark information sets is 0, the concrete numerical value of time slot mark information 2 is 2, and the cascade identification information is 1 o'clock, corresponding with time slot mark information 1, then to get access to the cascade identification information be 1 to ODU, is 0 so inquire the concrete numerical value of this cascade identification information time slot corresponding identification information.
After obtaining above-mentioned parameter, ODU can determine that the topology location of self is 1, and can communicate by time slot mark information 1 link corresponding and BTS.
In the foregoing description, the cascade that ODU receives BTS is provided with the cascade setting of carrying out self after the request, can communicate after finishing, in such scheme, when certain ODU finish self be provided with after, can upgrade and be forwarded to next ODU the cascade identification information, next ODU receives this cascade and execution same operation in request back is set until arriving afterbody ODU (promptly when certain ODU judges that can't continue to transmit cascade is provided with request, then this ODU is afterbody ODU), another ODU method for obtaining topology location is provided below, the forwarding that can be more accurately cascade be provided with request is controlled, below this situation is described in detail, see also Fig. 3, ODU method for obtaining topology location second embodiment comprises in the embodiment of the invention:
301, an ODU receives cascade request is set;
In the present embodiment, the cascade that ODU receives the BTS transmission is provided with request, in order to control the forwarding that cascade is provided with request, then should include cascade identification information and total cascade number in this request, it is that the cascade identification information is used to indicate ODU current for which grade cascade, and total cascade number is used in reference to and is shown in next total what grade ODU of this BTS.
Need to prove, because ODU and BTS need communicate, so ODU need select the time slot corresponding identification information, thereby with this time slot mark information link corresponding on communicate with BTS, be understandable that, time slot mark information can be handed down to ODU by BTS, also can be when system initialization default configuration in ODU, all issuing time slot mark information with BTS among present embodiment and the follow-up embodiment is that example describes, in concrete the application, can take the mode of configuration time slot mark information in ODU in advance equally.
In the present embodiment, cascade is provided with and also comprises the time slot mark information sets in the request, includes the several slots identification information in this time slot mark information sets, and each the time slot mark information all concrete numerical value with the cascade identification information is corresponding one by one.
For the more specific description cascade is provided with the structure of request, provides an instantiation below and describe:
Table 1
| The cascade identification information | Time slot mark information 1 | Time slot mark information 2 | ...... | Total cascade number |
From said structure as can be seen, what adopt in the present embodiment is that frame format is represented cascade identification information and time slot mark information sets, be understandable that, in actual application, can adopt the data structure of other types equally, as long as wherein include the cascade identification information, time slot mark information sets and total cascade number get final product.
302, an ODU obtains cascade cascade identification information in the request is set;
ODU gets access to after cascade is provided with request, from this request, obtain the numerical value that the cascade identification information partly comprises, the numerical value of supposing the cascade identification information part in the table 1 is 1, and then ODU obtains cascade and request is set knows that current cascade identification information is 1, represents that promptly current cascade progression is 1 grade.
303, ODU inquiry cascade identification information time slot corresponding identification information;
Owing to include the several slots identification information in the time slot mark information sets, each the time slot mark information all concrete numerical value with the cascade identification information is corresponding one by one, so after ODU obtains out the cascade identification information, can in the time slot mark information sets, inquire about and this cascade identification information time slot corresponding identification information according to this cascade identification information.
The concrete numerical value of supposing the time slot mark information 1 in the table 1 is 0, the concrete numerical value of time slot mark information 2 is 2, and the cascade identification information is 1 o'clock, corresponding with time slot mark information 1, then to get access to the cascade identification information be 1 to ODU, is 0 so inquire the concrete numerical value of this cascade identification information time slot corresponding identification information.
304, an ODU carries out the cascade setting to self;
After ODU gets access to cascade identification information and time slot mark information, self is carried out the cascade setting, specifically be set in the present embodiment these two parameters are stored in the local configuration information, be understandable that, can also be other set-up mode equally, the cascade progression of concrete this ODU of expression is 1 grade, and the time slot mark information value is 0.
305, whether an ODU judges current cascade identification information less than total cascade number, if then execution in step 306, if not, then execution in step 308;
ODU carries out self after the cascade setting, and whether the cascade identification information of judging self in present embodiment, supposes total cascade number be 2 less than total cascade number, and then ODU judges that the cascade identification information of self is 1, and promptly less than total cascade number, then execution in step 306.
306, an ODU upgrades the cascade identification information;
When the cascade identification information of self is counted less than total cascade, then need current ODU that the cascade identification information that cascade is provided with in the request is upgraded, concrete more new tool can for: the numerical value that cascade is provided with the cascade identification information in the request adds 1.Being understandable that, can be other more new tools equally, for example adds a constant, or multiply by a constant, or variable all can, as long as the cascade identification information is increased.
307, cascade identification information and the time slot mark information sets of an ODU after the 2nd ODU transmits renewal, and execution in step 308;
After ODU upgrades the cascade identification information, cascade identification information after upgrading and time slot mark information sets are carried on cascade to be provided with in the request, form second cascade request is set, and send this second cascade to the 2nd ODU that links to each other with self request is set.
308, an ODU chooses link corresponding according to time slot mark information and communicates.
In the present embodiment, ODU is to after self carrying out cascade and being provided with, promptly can be according to time slot mark information inquiry link corresponding, and use this link and BTS to communicate, concrete inquiry link and the process of using link to communicate are prior art, repeat no more herein.
After above-mentioned ODU upgrades the cascade identification information, then the numerical value of cascade identification information can become 2, when the 2nd ODU receives after second cascade that last ODU sends is provided with request, carry out the processing identical with last ODU, it is execution in step 301 to 305, but during execution in step 305, because current cascade identification information is 2, and total cascade number also is 2, so the 2nd ODU is with direct execution in step 308, show that promptly the 2nd ODU has been afterbody ODU, do not need to transmit again cascade request is set, get final product and directly communicate.
Be understandable that, in such scheme, when the cascade identification information of self is counted less than total cascade, equally can first execution in step 308, execution in step 306 and step 307 again.
For ease of understanding, describe with an instantiation below, be understandable that following example does not constitute qualification to present embodiment:
The one ODU gets access to after cascade that BTS sends is provided with request, from this request, obtain the numerical value 1 that the cascade identification information partly comprises, then ODU obtain cascade be provided with the request know that current cascade identification information is 1, represent that promptly current cascade progression is 1 grade, simultaneously, the concrete numerical value of the time slot mark information 1 in the time slot mark information sets is 0, the concrete numerical value of time slot mark information 2 is 2, and the cascade identification information is 1 o'clock, corresponding with time slot mark information 1, then to get access to the cascade identification information be 1 to ODU, is 0 so inquire the concrete numerical value of this cascade identification information time slot corresponding identification information.
Obtain after the cascade identification information, the one ODU is provided with the topology location information of self, and be provided with from cascade and obtain total cascade number the request, the numerical value of concrete total cascade number is 2, the one ODU judges that whether current cascade identification information is less than total cascade number, because 1 less than 2, so an ODU upgrades current cascade identification information, promptly its numerical value is added 1, and send cascade identification information after comprising renewal and second cascade of time slot mark information sets is provided with request to the 2nd ODU that links to each other with self, and an ODU can be that 0 link corresponding and BTS communicate according to time slot mark information;
The 2nd ODU receives and obtains the numerical value 2 that the cascade identification information partly comprises after this second cascade is provided with request from this request, then ODU obtain cascade be provided with the request know that current cascade identification information is 2, represent that promptly current cascade progression is 2 grades, simultaneously, the concrete numerical value of the time slot mark information 1 in the time slot mark information sets is 0, the concrete numerical value of time slot mark information 2 is 2, and the cascade identification information is 2 o'clock, corresponding with time slot mark information 2, then to get access to the cascade identification information be 2 to ODU, is 2 so inquire the concrete numerical value of this cascade identification information time slot corresponding identification information.
Obtain after the cascade identification information, the 2nd ODU is provided with the topology location information of self, and be provided with from cascade and obtain total cascade number the request, the numerical value of concrete total cascade number is 2, the 2nd ODU judges current cascade identification information whether less than total cascade number, because 2 be not less than 2, so the 2nd ODU is obtained from the afterbody as cascaded topology, then no longer cascade is provided with request and transmits, and the 2nd ODU can be that 2 link corresponding and BTS communicate according to time slot mark information.
Such scheme is that the embodiment with two-stage cascade describes, and is understandable that, such scheme can be expanded to the situation of multistage ODU cascade equally, only needs the numerical value of the concrete total cascade number of change to get final product.
Below the communication system embodiment in the embodiment of the invention is described, sees also Fig. 4, communication system embodiment comprises in the embodiment of the invention:
Radio frequency extension apparatus 402 is used to receive the cascade that described base station transceiver sends request is set, and obtains described cascade cascade identification information in the request is set.
In the present embodiment, cascade is provided with request can further carry the time slot mark information sets;
Radio frequency extension apparatus 402 also is used for inquiring about the time slot corresponding identification information according to described cascade identification information in described time slot mark information sets, and chooses link corresponding according to described time slot mark information and communicate by letter with described base station transceiver foundation.
See also Fig. 5, base station transceiver embodiment comprises in the embodiment of the invention:
In the present embodiment, the cascade that request generation unit 501 generates is provided with request and can also further carries the time slot mark information sets, and then the cascade of request transmitting unit 502 transmissions is provided with in the request and also can carries the time slot mark information sets accordingly.
See also Fig. 6, radio frequency extension apparatus embodiment comprises in the embodiment of the invention:
Receiving element 601 is used to receive cascade request is set, and described cascade is provided with request and carries the cascade identification information;
Acquiring unit 602 is used for from the cascade that described receiving element 601 receives request being set and obtains the cascade identification information.
Radio frequency extension apparatus in the present embodiment can further include:
In the present embodiment, cascade is provided with request can also further carry the time slot mark information sets, and radio frequency extension apparatus can further include:
Correspondingly, memory cell 604 also is used for the time slot mark information that storing queries unit 603 inquires.
In the present embodiment, radio frequency extension apparatus also comprises:
Cascade update of identification information unit 606 is used for after memory cell is preserved described cascade identification information and time slot mark information described cascade identification information being upgraded;
Transmitting element 607 is used for sending second cascade to the 2nd ODU that is connected with self request is set, and described second cascade is provided with the cascade identification information after comprising described time slot mark information sets in the request and passing through 606 renewals of described cascade update of identification information unit.
In the present embodiment, radio frequency extension apparatus also comprises:
Be understandable that, among the communication system embodiment that BTS embodiment that describes among above-mentioned two embodiment and ODU embodiment can be applied to aforementioned introduction, also can realize separately.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises the steps: when carrying out
Radio frequency extension apparatus ODU receives cascade request is set, and described cascade is provided with request and carries the cascade identification information; Obtain described cascade cascade identification information in the request is set, described cascade identification information is used to identify the topology location of described ODU.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
More than a kind of radio frequency extension apparatus method for obtaining topology location provided by the present invention and communication system and relevant apparatus are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. a radio frequency extension apparatus method for obtaining topology location is characterized in that, comprising:
Radio frequency extension apparatus ODU receives cascade request is set, and described cascade is provided with request and carries cascade identification information and time slot mark information sets;
Obtain described cascade cascade identification information in the request is set, described cascade identification information is used to identify the topology location of described ODU;
Inquiry and cascade identification information time slot corresponding identification information in described time slot mark information sets, described time slot mark information is used to select link corresponding, makes ODU set up with base station transceiver and communicates by letter.
2. method according to claim 1 is characterized in that, describedly comprises after obtaining the step that cascade is provided with the cascade identification information in the request:
Upgrade the cascade identification information;
Second cascade that sends the cascade identification information after comprising renewal to the 2nd ODU that is connected with self is provided with request.
3. method according to claim 2 is characterized in that, described cascade is provided with request and further carries total cascade number;
Comprise before the step of described renewal cascade identification information: whether judge the cascade identification information that receives less than described total cascade number, if then carry out the step of upgrading the cascade identification information;
The step of described renewal cascade identification information comprises: the cascade identification information that receives is added 1.
4. a communication system is characterized in that, comprising:
Base station transceiver, and radio frequency extension apparatus;
Described base station transceiver comprises:
The request generation unit is used to generate cascade request is set, and described cascade is provided with request and carries cascade identification information and time slot mark information sets, and described cascade identification information is corresponding with the time slot mark information in the time slot mark information sets;
Request transmitting unit is used for to the cascade that radio frequency extension apparatus transmission described request generation unit generates request being set;
Described radio frequency extension apparatus comprises:
Receiving element is used to receive described cascade request is set;
Acquiring unit is used for from the cascade that described receiving element receives request being set and obtains the cascade identification information;
Query unit, be used for the cascade identification information that gets access to according to described acquiring unit and inquiry time slot corresponding identification information in the time slot mark information sets of request be set in the cascade that described receiving element receives, described time slot mark information is used to select link corresponding, makes radio frequency extension apparatus set up with base station transceiver and communicates by letter.
5. a base station transceiver is characterized in that, comprising:
The request generation unit, be used to generate cascade request is set, described cascade is provided with request and carries cascade identification information and time slot mark information sets, described cascade identification information is corresponding with the time slot mark information in the time slot mark information sets, described time slot mark information is used to select link corresponding, makes radio frequency extension apparatus set up with base station transceiver and communicates by letter;
Request transmitting unit is used for to the cascade that radio frequency extension apparatus transmission described request generation unit generates request being set.
6. a radio frequency extension apparatus is characterized in that, comprising:
Receiving element is used to receive cascade request is set, and described cascade is provided with request and carries the cascade identification information;
Acquiring unit is used for from the cascade that described receiving element receives request being set and obtains the cascade identification information;
Described cascade is provided with request and further carries the time slot mark information sets;
Described radio frequency extension apparatus also comprises:
Query unit, be used for the cascade identification information that gets access to according to described acquiring unit and inquiry time slot corresponding identification information in the time slot mark information sets of request be set in the cascade that described receiving element receives, described time slot mark information is used to select link corresponding, makes radio frequency extension apparatus set up with base station transceiver and communicates by letter.
7. radio frequency extension apparatus according to claim 6 is characterized in that, described radio frequency extension apparatus also comprises:
Cascade update of identification information unit is used for described cascade identification information is upgraded;
Transmitting element, be used for sending second cascade to second radio frequency extension apparatus that is connected with self request is set, described second cascade is provided with the cascade identification information after comprising described time slot mark information sets in the request and passing through the renewal of described cascade update of identification information unit.
8. radio frequency extension apparatus according to claim 7 is characterized in that, described radio frequency extension apparatus also comprises:
Upgrade control unit, be used for request being set and obtain total cascade number from the cascade that described acquiring unit gets access to, judge that whether the cascade identification information that receives is less than described total cascade number, if then notify described cascade update of identification information unit that described cascade identification information is upgraded.
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| CN102300236B (en) * | 2010-06-28 | 2014-05-07 | 电信科学技术研究院 | Method, device and system for remotely maintaining remote radio unit (RRU) |
| CN105636234B (en) * | 2014-10-27 | 2021-06-25 | 中兴通讯股份有限公司 | Station opening method, base station controller and station opening system |
| CN110996447A (en) * | 2020-01-10 | 2020-04-10 | 马育麟 | Miniature model light control system |
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| CN1889743A (en) * | 2005-06-30 | 2007-01-03 | 华为技术有限公司 | Method of radio frequency remoto module management maintenance |
| CN1905570A (en) * | 2006-07-03 | 2007-01-31 | 中兴通讯股份有限公司 | Method and apparatus for indentifying multi-stage remote-wireless apparatus |
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| CN1770713A (en) * | 2004-11-05 | 2006-05-10 | 上海华为技术有限公司 | Addressing system for cascade networking and its method |
| CN1889743A (en) * | 2005-06-30 | 2007-01-03 | 华为技术有限公司 | Method of radio frequency remoto module management maintenance |
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