CN106856411B - POI equipment and method are held in a kind of thermal expansion - Google Patents
POI equipment and method are held in a kind of thermal expansion Download PDFInfo
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- CN106856411B CN106856411B CN201710096558.8A CN201710096558A CN106856411B CN 106856411 B CN106856411 B CN 106856411B CN 201710096558 A CN201710096558 A CN 201710096558A CN 106856411 B CN106856411 B CN 106856411B
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/0057—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0067—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with one or more circuit blocks in common for different bands
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Transceivers (AREA)
Abstract
The present invention provides a kind of thermal expansion and holds POI equipment and method, POI equipment is held in the thermal expansion, and it includes expansion module and basic module, the expansion module, it docks for the support communications band signal classification according to basic module and classifies into signal, then integrated to same support communications band signal is respectively belonged to；The basic module, passes through classification for the expansion module and the signal integrated is combined, and is then mixed output again.Before accessing the basic module, first with the expansion module a service signal is filtered or is combined to classify.In this way, need to only suspend the signal transmission that new business signal corresponds to incoming end when access new business signal, without stopping the transmission of all access signals, used to avoid because prolonged off-grid can seriously affect user.
Description
Technical field
The present invention relates to POI (POINT OF INTERFACE, multisystem mixing platform) design fields, more particularly to one kind
The equipment and method of thermal expansion appearance POI.
Background technique
POI (multi-system access platform or multisystem mixing platform) is used as a kind of communication equipment, has there is 15 at home
Year or more history, the appearance of POI is Joint construction and sharing theory as a result, POI is because be multisystem access, basic main indicator
There are access frequency range, Insertion Loss, standing wave, isolation, power and intermodulation etc., frequency range is to measure the index of POI access capability, so once connecing
Enter frequency range or standard changes, former POI cannot be used, it is necessary to which the new equipment of development and production, POI are that multisystem mixing is set
Standby, anti-interference ability is core index, and isolation and intermodulation are that the tool of anti-interference ability is existing, the variation of any one same index
Will lead to original equipment cannot use.
The change of mobile communication technology is rapid, original business and frequency range not adapting to gradually with advances in technology,
Technology each year is all in change, and 200,000 hours service life of passive system equipment considerably beyond the technology innovation phase, so always
Equipment to continue to be on active service be the demand of each Construction Party, be the problem that industry develops to today, many operators of thermal expansion Rongcheng
With the current demand of Construction Party, especially prolonged off-grid can seriously affect user's perception, influence brand recognition.It is so-called
Thermal expansion is held: referring to and realizes dilatation, transformation or upgrading in the case where not interrupting covering.
In the prior art, even if there is the design of POI, current more multisystem, more multi-standard, differentiation dilatation are had been unable to meet
Scene, it cannot be guaranteed that the access capability of full-service；And since the business that its single drawer carries is more, the work such as transformation and upgrade
It measures larger.
It to sum up describes, traditional POI not can solve the problem of thermal expansion is held.
Summary of the invention
The object of the present invention is to provide a kind of thermal expansions to hold POI equipment.
It is a further object of the present invention to provide a kind of methods for holding POI equipment using thermal expansion.
To achieve the goals above, the present invention the following technical schemes are provided:
POI equipment is held in a kind of thermal expansion of the present invention, for replacing the access of different frequency range comprising expansion module and
Basic module, the expansion module, for access signal carry out classification and each category signal form mutually independent access, so
Each access is integrated again afterwards；The basic module, for the expansion module through classification and the signal integrated into
Row combining, is then mixed output again.
Further, described pair of access signal is classified, and refers to the support communications band signal according to the basic module
Classification classifies to access signal.
Further, described to integrate to respectively belonging to same support communications band signal, refer to belonging to the same support
Communications band and independent, scattered frequency range integrated.
Further, the expansion module includes for the different extension submodules for supporting communications band.
Further, the extension submodule includes the corresponding filter for accessing same service signal.
Further, the extension submodule includes the combiner of corresponding access different business signal combining.Compared to existing skill
Art, the solution of the invention has the following advantages:
With traditional POI equipment, it makes use of wherein basic modules to the corresponding respective branch of input of each input port
The characteristic for holding communications band, before accessing basic module 1, each input terminal of corresponding basic module 1 installs additional first corresponding to its
The extension submodule of service signal filtering or combining.When accessing new business signal, new business signal phase is only needed to change or adjusted
The taxonomic structure in extension submodule answered, in case signal transmission influences user's use because of off-grid duration.
The method of the present invention for holding POI equipment using above-mentioned thermal expansion, comprising the following steps: access signal is divided
Class and each category signal forms mutually independent access；Each path signal is integrated, and is exported each mutually independent
Integrated signal；Each integrated signal is combined, and is mixed output.Further, described pair of access signal is classified, refer to according to
It docks and classifies into signal according to the support communications band signal classification of the basic module.
Further, described to integrate to respectively belonging to same support communications band signal, refer to belonging to the same support
Independent, the scattered frequency range of communications band integrated.
Further, described to form mutually independent access, refer to and carries out individual transmission after classifying to access signal.
Further, when needing replacing access new business signal, its access accordingly accessed is transmitted in pause；Access new business
After signal, new business signal is filtered.
Further, when needing to access new business signal, its access accordingly accessed is transmitted in pause；Access new business signal
Afterwards, Added Business signal and former service signal are combined.
Compared with prior art, the solution of the invention has the following advantages: being directly combined again to access signal to former POI equipment
Before being mixed the traditional approach of output, it is first sorted in the mode of integration, divide access signal can, when access is new perhaps for different classifications signal
When service signal, it need to only suspend the signal transmission of incoming end corresponding to new business signal, the signal for not influencing other incoming ends passes
It is defeated, in order to avoid user's embodiment is influenced because of off-grid.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the pictorial diagram that POI equipment is held in thermal expansion provided by the invention；
Fig. 2 is the circuit diagram that POI equipment is held in thermal expansion provided by the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Hot equipment in the capacity expansion as described in Figure 1 comprising basic module 1 and expansion module 2, for believing access mobile communication
Number and to antenna feeder compartment system output signal.Expansion module 2 forms each mutually independent access and carries out to the basic module 1
Transmission.Specifically, expansion module 2 includes several extension submodules, forms mutually independent access to base between extension submodule
Plinth module 1 carries out signal transmission, and can replace some or several extension submodules therein without influencing other extensions
The running of submodule.When needing upgrading service, the corresponding extension submodule of access new business signal, Qi Takuo are only needed to change
It opens up submodule business to operate normally, is not necessarily to change or out of service.And basic module 1 is capable of providing connecing from DC to 2.7GHz
Enter ability (DC refers to frequency down to the signal of 0Hz, and the communications industry is usually indicated with DC), covers the industry of major mobile communication access
Business frequency range is the basis of extension, upgrading and transformation, provides the access of specific business, change extension by extending submodule
The changeable corresponding access service of module.The powerful access capability of the flexibility combination basic module 1 of expansion module 2 ensure that expansion
Hold the smooth access of staging business.
Each extension submodule of the expansion module 2 provides mutually independent access, frequency range integration, carrier wave polymerization,
It is i.e. implementable on corresponding extension submodule when upgrading.
The thermal expansion holds the signal of POI equipment access from different operators, and frequency range is different, and basic module 1 docks
The support communications band classification for entering signal carries out classification access, and as shown in table 1, each input port of basic module 1 is corresponding
Same support communications band is inputted, therefore, each extension submodule of the corresponding access of each input port of basic module 1 need to be according to
According to the division for supporting communications band, different support communications band ranges is set to access signal, it is corresponding to make debugging or replacement
Extension submodule foundation.
POI equipment is held in the thermal expansion, and basic module 1 can provide access standard and frequency range such as table 1.
It is corresponding with corresponding frequency range and different standards based on different support communications bands, so that each extension submodule
The communications band of the same support will be each belonged to again to access Modulation recognition and independent, scattered frequency range is (even different to make
The access signal of formula) it is integrated together, carry out carrier wave polymerization.Meanwhile carrier wave polymerization need to be equal to and be higher than to independence, scattered frequency range
5MHz, optimal cases are greater than 10MHz.
Therefore, the scattered frequency range for the communications band for being related to same support when carrier wave polymerize first is integrated, and forms one
The frequency range greater than 5MHz of connection, then carried with the frequency range for the service signal for belonging to the same other carryings for supporting communications band
Wave polymerization.In the present embodiment, this expansion module is divided into 4 groups, and every group has 4 extension submodules, shares 4*4 extension submodule
(201-216), as shown in Fig. 2, being mutually independent access between each extension submodule.It is sent out when the case where above-mentioned carrier wave polymerization
Raw, for accessing wherein the first extension submodule 201, its access capability is changed at this time, new business access, is needed pair
Corresponding transmission mechanism is replaced in the debugging of extension submodule 201, is allowed to support new demand.It is specific as follows:
When needing for former service signal to be changed to new service signal access, the corresponding access of pause new business signal
The signal transmission for extending submodule, is changed to new business signal pair by the corresponding filter of former service signal for the extension submodule
The filter answered.In one embodiment, the former service signal of the first expansion module 201 is GSM900, because upgrading service need to change for
The service signal of LTE700, at this point, the first extension submodule 201 is extracted out, as shown in Figure 1, more by its internal GSM filter
It is changed to LTE filter.
When needing to increase new service signal access, the letter of the corresponding extension submodule accessed of pause new business signal
Number transmission, by the extension submodule be changed to access corresponding with the extension submodule to new business signal former service signal progress
The combiner of combining, the original service signal and new business signal belong to same support communications band.In another embodiment,
The service signal that the original access signal of one expansion module 201 is GSM900, because upgrading service need to increase the business letter of LTE700
Number, at this point, the first extension submodule 201 is extracted out, as shown in Figure 1, its internal GSM filter is changed to accessible 700MHz
Combiner corresponding with 900MHz.
During above-mentioned two kinds of replacements the first extension 201 corresponding transmission mechanism of submodule, second to the 16th expands
Exhibition submodule (202-216) still operates normally, and not extended to change inside submodule 201 by first is influenced.
Basic module 1 is made of 4 combiners 102, and each combiner 102 can provide 4 support communications bands such as table 1
Access, i.e. basic module 1 can provide the support communications band access of 4*4, and identical support communications band is in the basic module 1
It can access most 4 groups in 4 combiners.Electric bridge 101 is to integrate the 4 into 4 of coupler 103 to go out electric bridge, which can also be such as Fig. 2 table
The 4 electric bridges composition shown provides 4 into the 4 combiner functions of going out, antenna feeder distribution system is introduced after effect 16 road signal of Shi Jiang mixing
System, while the day feedback signal received is fed back into information source.
The present invention provides a kind of method for holding POI equipment using above-mentioned thermal expansion, and the contribution to the technical solution is to work as to need
When accessing new business signal, new business signal corresponds to access channel pause transmission, after accessing new business signal, so that it may restore
The transmission of corresponding access channel.In this way, could restore after new business signal to be accessed without the transmission for stopping all access channels
All transmission.
The scheme of this method is first to access Modulation recognition, and signal of all categories is independent access, does not interfere with each other, and can
To replace running of the access of wherein some or several without influencing other accesses.Then sorted signal is carried out again
Integration forms each mutually independent integrated signal, and finally each integrated signal is combined, is mixed output to antenna feeder distribution system respectively
System, having the technical effect that for the technical solution increase new business signal even if access signal, will not influence other service signals
Transmission.
The concrete scheme of the program is the support communications band classification according to basic module 1, before accessing basic module 1
The different transmission channels for supporting communications band first are divided into access signal, mutual individual transmission is not interfere with each other.Then, then it is right
The sorted signal for belonging to same support communications band is integrated.This according to table 1, even if same support communications band
Signal also include from corresponding frequency range and different business standards, it is possible to from different operators or public machine
Structure, therefore, belonging to same support communications band includes independent and scattered frequency range, same to these before the combining of basic module 1
The independent and scattered frequency range of one support communications band is integrated, and carrier wave polymerization is carried out.Then again to by basic module 1 into
Row combining and mixing output.Wherein, carrier wave polymerization need to be equal to independent, scattered frequency range and be higher than 5MHz, and optimal cases are big
In 10MHz.
Therefore, the scattered frequency range for the communications band for being related to same support when carrier wave polymerize first is integrated, and forms one
The frequency range greater than 5MHz of connection, then it is poly- with the frequency range progress carrier wave of the other bearer services for the communications band for belonging to same support
It closes.Hold POI equipment according to above-mentioned thermal expansion adaptively to debug or be changed to new business signal when accessing new business signal
Transmission, it is specifically as follows:
When needing for former service signal to be changed to the access of new business signal, suspend the access that new business signal is accessed
Transmission.After accessing new business signal, new business signal is filtered by being filtered to be changed to former service signal originally.?
In one embodiment, former service signal is GSM900, because upgrading service needs to change the service signal for LTE700, at this point, by business
The access way of signal is the filtering processing to LTE700, then is transmitted.
When needing to increase new service signal access, the transmission for the access that pause new business signal is accessed,.Access is new
After service signal, the service signal newly increased and the access original service signal are combined transmission, the original service signal with
New business signal belongs to same support communications band.In one embodiment, former service signal is GSM900, because upgrading service needs to increase
Add the service signal of LTE700, at this point, transmission will be combined to this two-way service signal.
During two kinds of above-mentioned adjustment new business signal institute's access channels, the running of other accesses is unaffected.
After the individual transmission to access Modulation recognition, integration and frequency-division section, basic module 1 is needed to the difference
Mutually independent access be combined and be mixed after, finally to antenna feeder compartment system export.The different accesses of 1 pair of basic module into
Corresponding grouping of going is accessed and is combined, and after forming Multi-path combination signal, is thinking the output of antenna feeder compartment system using after mixing, together
When the day feedback signal received fed back into information source.In the present embodiment, corresponding with expansion module 2, there are 4 in basic module 1
Combining Circuit, each Combining Circuit have 4 combining inputs, i.e., the support communications band that basic module 1 can provide 4*4 accesses.
POI equipment and method are held in a kind of thermal expansion provided by the invention, are each input ports using basic module 1
The characteristic for inputting different support communications bands each other is first filtered or is closed to each service signal before accessing basic module 1
Road is classified, and sorted signal is made to form mutually independent individual channel transmission, reaches some or several accesses therein
Suspend the technical effect transmitted without influencing other tunnels.In this way, need to only suspend new when needing to access new business signal
The signal of service signal institute access channel transmits, without stopping the aisled transmission of institute, to avoid can be tight because of prolonged off-grid
Ghost image rings user and uses.
The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. POI equipment is held in a kind of thermal expansion, for replacing the access of different frequency range, it is characterised in that: it includes expansion module and base
Plinth module,
The expansion module, for access signal carry out classification and each category signal form mutually independent access, then again
Each access is integrated, described pair of access signal is classified, and refers to the support communication frequency according to the basic module
Segment signal classification classifies to access signal, described to integrate to each access, refers to logical to the same support is belonged to
Believe frequency range and independent, scattered frequency range is integrated；
Each input port of the basic module is corresponding to input same support communications band, the basic module, for pair
The signal classified and integrated by the expansion module is combined, and is then mixed output again.
2. POI equipment is held in thermal expansion according to claim 1, it is characterised in that: the expansion module includes being used for transmission not
It is mutually indepedent between the extension submodule with the extension submodule for supporting communications band.
3. POI equipment is held in thermal expansion according to claim 1, it is characterised in that: the extension submodule includes corresponding access
The filter of same service signal.
4. the POI equipment that thermal expansion according to claim 1 is held, it is characterised in that: the extension submodule includes that correspondence connects
Enter the combiner of different business signal combining.
5. POI method is held in a kind of thermal expansion, hold POI equipment using the described in any item thermal expansions of claim 1-4, which is characterized in that
The following steps are included:
Classification is carried out to access signal and each category signal forms mutually independent access, described pair of access signal is classified,
Refer to dock according to the support communications band signal classification of the basic module and classify into signal；
Each path signal is integrated, and exports each mutually independent integrated signal, it is described that each access is carried out
Integration refers to that same the supports communications band and independence, scattered frequency range integrates to belonging to；
Each integrated signal is combined, and is mixed output.
6. POI method is held in thermal expansion according to claim 5, it is characterised in that: it is described to form mutually independent access, refer to
Individual transmission is carried out after classifying to access signal.
7. POI method is held in thermal expansion according to claim 5, it is characterised in that:
When needing replacing access new business signal, its access accordingly accessed is transmitted in pause；
After accessing new business signal, new business signal is filtered.
8. POI method is held in thermal expansion according to claim 5, it is characterised in that:
When needing to access new business signal, its access accordingly accessed is transmitted in pause；
After accessing new business signal, Added Business signal and former service signal are combined.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710096558.8A CN106856411B (en) | 2017-02-22 | 2017-02-22 | POI equipment and method are held in a kind of thermal expansion |
| PCT/CN2017/119549 WO2018153163A1 (en) | 2017-02-22 | 2017-12-28 | Thermal capacity expansion poi device and method |
| SG11201907698UA SG11201907698UA (en) | 2017-02-22 | 2017-12-28 | A hot capacity extension POI device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710096558.8A CN106856411B (en) | 2017-02-22 | 2017-02-22 | POI equipment and method are held in a kind of thermal expansion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106856411A CN106856411A (en) | 2017-06-16 |
| CN106856411B true CN106856411B (en) | 2019-04-30 |
Family
ID=59125172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710096558.8A Active CN106856411B (en) | 2017-02-22 | 2017-02-22 | POI equipment and method are held in a kind of thermal expansion |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN106856411B (en) |
| SG (1) | SG11201907698UA (en) |
| WO (1) | WO2018153163A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106856411B (en) * | 2017-02-22 | 2019-04-30 | 京信通信***（中国）有限公司 | POI equipment and method are held in a kind of thermal expansion |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201845845U (en) * | 2010-11-04 | 2011-05-25 | 杭州紫光网络技术有限公司 | POI low intermodulation system |
| CN203942525U (en) * | 2014-06-19 | 2014-11-12 | 京信通信***（中国）有限公司 | POI flash chamber and dilatation POI system |
| CN204377299U (en) * | 2013-06-27 | 2015-06-03 | 西门子公司 | For the modular communication device of industrial automation system |
| CN105393235A (en) * | 2013-06-12 | 2016-03-09 | 西门子公司 | Method and apparatus for serial data transmission between a basic module and a first expansion module |
| CN205179373U (en) * | 2015-11-27 | 2016-04-20 | 深圳市虹远通信有限责任公司 | A intermodulation test system that is used for POI's multifrequency section to stride standard |
| CN106058401A (en) * | 2016-07-29 | 2016-10-26 | 四川天邑康和通信股份有限公司 | LTE point of interface applied to MIMO system |
| KR20170018559A (en) * | 2015-08-10 | 2017-02-20 | 주식회사 에이디알에프코리아 | BTS, DAS Interface Tray supporting Multi-band and Multi-carrier |
| CN206533364U (en) * | 2017-02-22 | 2017-09-29 | 京信通信***（中国）有限公司 | POI equipment is held in a kind of thermal expansion |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203015127U (en) * | 2012-11-16 | 2013-06-19 | 丹阳华神电器有限公司 | Multiband antenna POI (Point Of Interface) bidirectional multi-system equipment |
| CN204810288U (en) * | 2015-07-21 | 2015-11-25 | 上海鑫众通信技术有限公司 | POI port power sampling system |
| CN106856411B (en) * | 2017-02-22 | 2019-04-30 | 京信通信***（中国）有限公司 | POI equipment and method are held in a kind of thermal expansion |
-
2017
- 2017-02-22 CN CN201710096558.8A patent/CN106856411B/en active Active
- 2017-12-28 SG SG11201907698UA patent/SG11201907698UA/en unknown
- 2017-12-28 WO PCT/CN2017/119549 patent/WO2018153163A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201845845U (en) * | 2010-11-04 | 2011-05-25 | 杭州紫光网络技术有限公司 | POI low intermodulation system |
| CN105393235A (en) * | 2013-06-12 | 2016-03-09 | 西门子公司 | Method and apparatus for serial data transmission between a basic module and a first expansion module |
| CN204377299U (en) * | 2013-06-27 | 2015-06-03 | 西门子公司 | For the modular communication device of industrial automation system |
| CN203942525U (en) * | 2014-06-19 | 2014-11-12 | 京信通信***（中国）有限公司 | POI flash chamber and dilatation POI system |
| KR20170018559A (en) * | 2015-08-10 | 2017-02-20 | 주식회사 에이디알에프코리아 | BTS, DAS Interface Tray supporting Multi-band and Multi-carrier |
| CN205179373U (en) * | 2015-11-27 | 2016-04-20 | 深圳市虹远通信有限责任公司 | A intermodulation test system that is used for POI's multifrequency section to stride standard |
| CN106058401A (en) * | 2016-07-29 | 2016-10-26 | 四川天邑康和通信股份有限公司 | LTE point of interface applied to MIMO system |
| CN206533364U (en) * | 2017-02-22 | 2017-09-29 | 京信通信***（中国）有限公司 | POI equipment is held in a kind of thermal expansion |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106856411A (en) | 2017-06-16 |
| SG11201907698UA (en) | 2019-09-27 |
| WO2018153163A1 (en) | 2018-08-30 |
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