CN106856411A - 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
- Publication number
- CN106856411A CN106856411A CN201710096558.8A CN201710096558A CN106856411A CN 106856411 A CN106856411 A CN 106856411A CN 201710096558 A CN201710096558 A CN 201710096558A CN 106856411 A CN106856411 A CN 106856411A
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- Prior art keywords
- signal
- held
- poi
- thermal expansion
- module
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Classifications
-
- 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
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, docked for the support communications band signal classification according to basic module and classified into signal, then integrated to respectively belonging to same support communications band signal；The basic module, is combined for the expansion module by the signal classified and integrate, and output is then mixed again.Before access the basic module, individual service signal is filtered first with the expansion module or combining is classified.So, when accessing new business signal, the signal transmission of new business signal correspondence incoming end need to only be suspended, the transmission without stopping all access signals, to avoid being used because prolonged off-grid can have a strong impact on user.
Description
Technical field
The present invention relates to POI (POINT OF INTERFACE, multisystem mixing platform) design field, more particularly to one kind
The equipment and method of POI are held in thermal expansion.
Background technology
POI (multi-system access platform or multisystem mixing platform), as a kind of communication equipment, has there is 15 at home
History more than year, the appearance of POI is the result of Joint construction and sharing theory, POI because being multisystem access, basic leading indicator
There are access frequency range, Insertion Loss, standing wave, isolation, power and intermodulation etc., frequency range is to weigh the index of POI access capabilities, so once connecing
Enter frequency range or standard changes, former POI can not be used, it is necessary to which the new equipment of development and production, POI is that multisystem mixing sets
Standby, antijamming capability is core index, and isolation and intermodulation are that the tool of antijamming capability shows, the change of same any one index
Original equipment can be caused can not be used.
The change of mobile communication technology is rapid, original business and frequency range not adapting to progressively with advances in technology,
Technology each year is all in change, and the passive system equipment life-span of 200,000 hours considerably beyond the technology innovation phase, so always
It is the demand of each Construction Party that the continuation of equipment is on active service, be problem that industry develops into today, many operators of thermal expansion Rongcheng
User can be had a strong impact on the current demand of Construction Party, especially prolonged off-grid to perceive, influence brand recognition.It is so-called
Thermal expansion is held：Finger is realized dilatation, transformation or is upgraded in the case of not interrupting covering.
In the prior art, even if there is the design of POI, current more multisystem, more multi-standard, differentiation dilatation can not have been met
Scene, it is impossible to ensure the access capability of full-service；And because the business that its single drawer is carried is more, the work such as transformation and upgrade
Amount is larger.
To sum up describe, traditional POI not can solve the problem of thermal expansion appearance.
The content of the invention
Hold POI equipment it is an object of the invention to provide a kind of thermal expansion.
It is a further object of the present invention to provide a kind of method that POI equipment is held in use thermal expansion.
To achieve these goals, the present invention provides following technical scheme：
POI equipment is held in a kind of thermal expansion of the present invention, the access for changing different frequency range, it include expansion module and
Basic module, the expansion module, for accessing, signal to be classified and each category signal forms separate path, so
Each path is integrated again afterwards；The basic module, enters for the expansion module by the signal classified and integrate
Row combining, is then mixed output again.
Further, described pair of access signal is classified, and refers to according to the support communications band signal of the basic module
Classification is classified to accessing signal.
Further, it is described to be integrated to respectively belonging to same support communications band signal, refer to belonging to same support
Communications band and independent, scattered frequency range integrated.
Further, the expansion module includes the extension submodule for different support communications bands.
Further, the extension submodule includes that correspondence accesses the wave filter of same service signal.
Further, the extension submodule includes that correspondence accesses the combiner of different business signal combining.Compared to existing skill
Art, the solution of the present invention has advantages below：
With traditional POI equipment, the respective branch of input is corresponded to each input port it makes use of wherein basic module
The characteristic of communications band is held, before basic module 1 is accessed, each input of correspondence basic module 1 installs first corresponding to its additional
Service signal filtering or the extension submodule of combining.When new business signal is accessed, only need to change or adjust new business signal phase
The taxonomic structure in extension submodule answered, in case signal transmission influences user to use because of off-grid duration.
The method for being held POI equipment using above-mentioned thermal expansion of the present invention, is comprised the following steps：Divided accessing signal
Class and each category signal forms separate path；Each path signal is integrated, and exports each separate
Integrated signal；Each integrated signal is combined, and is mixed output.Further, described pair access signal classify, refer to according to
Support communications band signal classification according to the basic module is docked and classified into signal.
Further, it is described to be integrated to respectively belonging to same support communications band signal, refer to belonging to same support
Independent, the scattered frequency range of communications band integrated.
Further, it is described to form separate path, refer to carry out individual transmission after classifying to access signal.
Further, when needing to change access new business signal, its corresponding path for accessing is transmitted in pause；Access new business
After signal, new business signal is filtered.
Further, when needing to access new business signal, its corresponding path for accessing is transmitted in pause；Access new business signal
Afterwards, Added Business signal and former service signal are combined.
Compared to existing technology, the solution of the present invention has advantages below：To former POI equipment directly to accessing signal combining again
Before being mixed the traditional approach of output, the mode of integration is first sorted in, access signal is divided, when different classifications signal is permitted to access newly
During service signal, need to only suspend the signal transmission of incoming end corresponding to new business signal, not influence the signal of other incoming ends to pass
It is defeated, in order to avoid influence user to embody because of off-grid.
The additional aspect of the present invention and advantage will be set forth in part in the description, and these will become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
The above-mentioned and/or additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and be readily appreciated that, wherein：
The pictorial diagram of the thermal expansion appearance POI equipment that Fig. 1 is provided for the present invention；
The circuit theory diagrams of the thermal expansion appearance POI equipment that Fig. 2 is provided for the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not construed as limiting the claims.
Hot equipment in the capacity expansion as described in Figure 1, it includes 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 separate path and is carried out to the basic module 1
Transmission.Specifically, expansion module 2 includes forming separate path to base between several extension submodules, extension submodule
Plinth module 1 carries out signal transmission, and can change certain or several extension submodules therein without influenceing other to extend
The running of submodule.When upgrading service is needed, the corresponding extension submodule for accessing new business signal need to be only changed, other expansions
Exhibition submodule business is normally run, without change or out of service.And basic module 1 can provide connecing from DC to 2.7GHz
Enter ability (DC refers to the frequency as little as signal of 0Hz, and the communications industry is generally represented with DC), cover the industry of major mobile communication access
Business frequency range, is the basis for extending, upgrading and transforming, and by extending access of the submodule there is provided specific business, changes extension
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 separate path, frequency range integration, carrier aggregation,
During upgrading, can implement on corresponding extension submodule.
The thermal expansion holds the signal of POI equipment access from different operators, and its frequency range is different, and basic module 1 is docked
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 corresponded to
Same support communications band is input into, therefore, each extension submodule that each input port of basic module 1 correspondence is accessed need to be according to
According to the division for supporting communications band, different support communications band scopes are set to accessing signal, it is corresponding to debug or change
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.
Based on different support communications bands to that should have corresponding frequency range and different standards so that each extension submodule
The communications band and independent, scattered frequency range (even different systems of same support will be each belonged to again to accessing Modulation recognition
The access signal of formula) it is integrated together, carry out carrier aggregation.Meanwhile, carrier aggregation need to be equal to independent, scattered frequency range and be higher than
5MHz, optimal cases are greater than 10MHz.
Therefore, the scattered frequency range that the communications band of same support is related to during carrier aggregation is first integrated, and forms one
The frequency range more than 5MHz of UNICOM, then carried with the frequency range of other service signals for carrying for belonging to same support communications band
Ripple is polymerized.In the present embodiment, this expansion module is divided into 4 groups, and every group has 4 extension submodules, has 4*4 extension submodule
(201-216), as shown in Fig. 2 being separate path between each extension submodule.When the situation of above-mentioned carrier aggregation is sent out
Raw, as a example by accessing wherein first and extend submodule 201, now its access capability there occurs change, and new business is accessed, it is necessary to right
Corresponding transmission mechanism is debugged or changed to extension submodule 201, is allowed to support new demand.It is specific as follows：
When needing for former service signal to be replaced by new service signal access, the corresponding access of pause new business signal
The signal transmission of submodule is extended, the extension submodule is replaced by new business signal pair by the corresponding wave filter of former service signal
The wave filter answered.In one embodiment, the former service signal of the first expansion module 201 is GSM900, because upgrading service need to be replaced by
The service signal of LTE700, now, the first extension submodule 201 is extracted out, as shown in figure 1, by its internal GSM wave filter more
It is changed to LTE wave filters.
When needing to increase new service signal access, the letter of the corresponding extension submodule for accessing of pause new business signal
Number transmission, the former service signal that the extension submodule is replaced by access corresponding with the extension submodule to new business signal is carried out
The combiner of combining, the former service signal and new business signal belong to same support communications band.In another embodiment,
The original signal that accesses of one expansion module 201 is the service signal of GSM900, and the business letter of LTE700 need to be increased because of upgrading service
Number, now, the first extension submodule 201 is extracted out, as shown in figure 1, its internal GSM wave filter is replaced by into accessible 700MHz
Combiner corresponding with 900MHz.
During changing the first extension corresponding transmission mechanism of submodule 201 at above-mentioned two kinds, second to the 16th expands
Exhibition submodule (202-216) still normal operation, not changed by the inside of the first extension submodule 201 is influenceed.
Basic module 1 is made up 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, identical supports communications band in the basic module 1
Most 4 groups are can access in 4 combiners.Electric bridge 101 is the 4 of integrated coupler 103 to enter 4 and go out electric bridge, and the part also can be such as Fig. 2 tables
The 4 electric bridges composition for showing, there is provided 4 enter the 4 combiner functions of going out, and antenna feeder distribution system is introduced after the road signal mixing of effect Shi Jiang 16
System, while the antenna feeder signal back information source that will be received.
The present invention provides a kind of method for holding POI equipment using above-mentioned thermal expansion, and its contribution to the technical scheme is to work as to need
When accessing new business signal, new business signal correspondence access channel pause transmission, after new business signal is accessed, so that it may recover
The transmission of correspondence access channel.So, without stopping the transmission of all access channels, could recover after new business signal to be accessed
All transmission.
The scheme of the method is that signal of all categories is independent path, is not interfere with each other, and can first to accessing Modulation recognition
To change wherein some or several path without influenceing the running of other paths.Then sorted signal is carried out again
Integrate, form each separate integrated signal, finally each integrated signal is combined, is mixed output to antenna feeder distribution system respectively
System, even if having the technical effect that for the technical scheme accesses signal increase new business signal, does not interfere with other service signals yet
Transmission.
The concrete scheme of the program is according to the support communications band classification of basic module 1, before basic module 1 is accessed
First it is divided into the transmission channel of different support communications bands to accessing signal, mutual individual transmission does not interfere with each other.Then, it is then right
The sorted signal for belonging to same support communications band is integrated.This is it can be seen from 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 carries out carrier aggregation.Then enter to by basic module 1 again
Row combining and mixing are exported.Wherein, it is higher than 5MHz that carrier aggregation need to be equal to independent, scattered frequency range, and optimal cases are big
In 10MHz.
Therefore, the scattered frequency range that the communications band of same support is related to during carrier aggregation is first integrated, and forms one
The frequency range more than 5MHz of UNICOM, then and belong to same support communications band other carry business frequency ranges carry out carrier wave gather
Close.POI equipment is held according to above-mentioned thermal expansion, when new business signal is accessed, is adaptively debugged or is replaced by new business signal
Transmission, it is specifically as follows:
When needing for former service signal to be replaced by the access of new business signal, the path that pause new business signal is accessed
Transmission.After accessing new business signal, new business signal is filtered by being filtered to be replaced by former service signal originally.
In one embodiment, former service signal is GSM900, the service signal of LTE700 need to be replaced by because of upgrading service, now, by business
The access way of signal is the filtering process to LTE700, then is transmitted.
When needing to increase new service signal access, the transmission of the path that pause new business signal is accessed,.Access new
After service signal, the service signal that will newly increase and path original service signal are combined transmission, the former 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
Plus the service signal of LTE700, now, transmission will be combined to this two-way service signal.
During two kinds of above-mentioned adjustment new business signal institute access channels, the running of other paths is unaffected.
After to the individual transmission for accessing Modulation recognition, integration and frequency-division section, basic module 1 is needed to the difference
Separate path be combined and be mixed after, the output of most backward antenna feeder compartment system.The different paths of basic module 1 pair enter
Correspondence packet of going is accessed and combining, after forming Multi-path combination signal, then by thinking the output of antenna feeder compartment system after mixing, together
When the antenna feeder signal back information source that will receive.In the present embodiment, it is corresponding with expansion module 2, there are 4 in basic module 1
Combining Circuit, each Combining Circuit has 4 combinings to be input into, i.e., basic module 1 can provide the support communications band access of 4*4.
POI equipment and method are held in a kind of thermal expansion that the present invention is provided, and it is using each input port of basic module 1
The characteristic of different support communications bands is input into each other, before basic module 1 is accessed, first each service signal is filtered or is closed
Road is classified, and sorted signal is formed separate individual channel and is transmitted, and reaches certain or several paths therein
The technique effect that pause is transmitted without influenceing other tunnels.So, when needing to access new business signal, need to only suspend new
The signal transmission of service signal institute access channel, the aisled transmission without stopping, to avoid because prolonged off-grid can be tight
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, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (12)
1. POI equipment, the access for changing different frequency range are held in a kind of thermal expansion, it is characterised in that：It includes expansion module and base
Plinth module,
The expansion module, for signal to be classified and each category signal forms separate path, Ran Houzai to accessing
Each path is integrated；
The basic module, is combined for the expansion module by the signal classified and integrate, and output is then mixed again.
2. POI equipment is held in thermal expansion according to claim 1, it is characterised in that：Described pair is accessed signal and classified, and refers to
Docked according to the support communications band signal classification of the basic module and classified into signal.
3. POI equipment is held in thermal expansion according to claim 2, it is characterised in that：It is described that each path is integrated, be
Refer to and integrated to belonging to the same support communications band and independent, scattered frequency range.
4. POI equipment is held in thermal expansion according to claim 1, it is characterised in that：The expansion module is included for transmitting not
It is separate between the extension submodule of same support communications band, the extension submodule.
5. POI equipment is held in thermal expansion according to claim 4, it is characterised in that：The extension submodule includes that correspondence is accessed
The wave filter of same service signal.
6. the POI equipment that thermal expansion according to claim 4 is held, it is characterised in that：The extension submodule includes that correspondence connects
Enter the combiner of different business signal combining.
7. POI methods are held in a kind of thermal expansion, and POI equipment is held using the thermal expansion described in claim any one of 1-6, it is characterised in that
Comprise the following steps：
To accessing, signal is classified and each category signal forms separate path；
Each path signal is integrated, and exports each separate integrated signal；
Each integrated signal is combined, and is mixed output.
8. POI methods are held in thermal expansion according to claim 7, it is characterised in that：Described pair is accessed signal and classified, and refers to
Docked according to the support communications band signal classification of the basic module and classified into signal.
9. POI methods are held in thermal expansion according to claim 8, it is characterised in that：It is described that each path is integrated, be
Refer to and integrated to belonging to the same support communications band and independent, scattered frequency range.
10. POI methods are held in thermal expansion according to claim 7, it is characterised in that：It is described to form separate path, be
Refer to and carry out individual transmission after classifying to access signal.
POI methods are held in 11. thermal expansions according to claim 10, it is characterised in that：
When needing to change access new business signal, its corresponding path for accessing is transmitted in pause；
After accessing new business signal, new business signal is filtered.
POI methods are held in 12. thermal expansions according to claim 10, it is characterised in that：
When needing to access new business signal, its corresponding path for accessing 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 |
| SG11201907698UA SG11201907698UA (en) | 2017-02-22 | 2017-12-28 | A hot capacity extension POI device and method |
| PCT/CN2017/119549 WO2018153163A1 (en) | 2017-02-22 | 2017-12-28 | Thermal capacity expansion 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 true CN106856411A (en) | 2017-06-16 |
| CN106856411B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018153163A1 (en) * | 2017-02-22 | 2018-08-30 | 京信通信系统（中国）有限公司 | Thermal capacity expansion poi device and method |
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| CN201845845U (en) * | 2010-11-04 | 2011-05-25 | 杭州紫光网络技术有限公司 | POI low intermodulation system |
| 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 |
| CN203942525U (en) * | 2014-06-19 | 2014-11-12 | 京信通信系统（中国）有限公司 | POI flash chamber and dilatation POI system |
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| 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 |
| 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 | 京信通信系统（中国）有限公司 | POI equipment is held in a kind of thermal expansion |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106856411B (en) * | 2017-02-22 | 2019-04-30 | 京信通信系统（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 (10)
| 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 |
| 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 |
| 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 | 京信通信系统（中国）有限公司 | POI flash chamber and dilatation POI system |
| 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 |
| 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 | 京信通信系统（中国）有限公司 | POI equipment is held in a kind of thermal expansion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018153163A1 (en) * | 2017-02-22 | 2018-08-30 | 京信通信系统（中国）有限公司 | Thermal capacity expansion poi device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| SG11201907698UA (en) | 2019-09-27 |
| WO2018153163A1 (en) | 2018-08-30 |
| CN106856411B (en) | 2019-04-30 |
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