CN104618916A - Efficient multisystem combiner platform - Google Patents
Efficient multisystem combiner platform Download PDFInfo
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Abstract
The invention discloses an efficient multisystem combiner platform. The efficient multisystem combiner platform comprises a signal extension module, N backward-stage cavity combiners and N second-stage cavity combiners, wherein N is an integer greater than 1; the signal extension module is used for extending the accessed network signals having higher covering power and outputting N same signals for the network signal of each system; the backward-stage cavity combiners are used for performing first-stage combination on the network signals output by the signal extension module; the N backward-stage cavity combiners output N same first combined signals; the second-stage cavity combiners are used for performing second-stage combination on the first combined signals and network signals having low covering power; each second-stage cavity combiner is correspondingly connected with an indoor distribution antenna feed system. Compared with the prior art, the efficient multisystem combiner platform is capable of combining the network signals of different systems and thoroughly developing the covering power of each network signal; as a result, the combining efficiency is improved and the equipment construction and maintenance cost can be reduced.
Description
Technical field
The present invention relates to the networking equipment in mobile communications network, particularly a kind of high efficiency multisystem mixing platform, belongs to mobile communication technology field.
Background technology
Multisystem mixing platform (POI) Main Function the mobile communications network signal of multiple types is carried out conjunction road and radiate after these network signals being sent to indoor regional by indoor distribution antenna-feedback system.POI is mainly used in the places such as subway, tunnel, large-scale commercial building and large scale business synthesis, builds in multi-room the antenna-feedback system that distributes, significantly can reduce construction investment without the need to the network signal again for multiple types.
The principle of POI is first by needing several network signals closing road to be roughly divided into 3 ~ 8 frequency ranges according to frequency, is generally 1 ~ 2 network signal in each frequency range; If 2 network signals generally first utilize electric bridge to carry out prime to this two paths of signals close road, then the signal exported behind conjunction road is accessed the port of rear class cavity combiner corresponding band, if 1 network signal then directly accesses the port of rear class cavity combiner corresponding band, typical apply is shown in accompanying drawing 1.
The problem of existing POI product mainly contains:
1, export the identical signal of two-way after utilizing electric bridge to carry out prime conjunction road to 2 road network signals, wherein a road access rear class cavity combiner, but another route wastes in absorbing with load, causes this 2 road network network quorum sensing inhibitor ability drop by half;
2, output to indoor distribution antenna-feedback system after the network signal of all standards direct or indirect (closing road through electric bridge prime) accesses rear class cavity combiner, do not consider that the network signal covering power of different systems is different; Because the network signal of different systems closes covering power behind road through POI and is determined by the network signal (being only other network signal about 1/4) the poorest by covering power, therefore cause and close road inefficiency, must increase several times (general about 3 times) various standard equipment and POI compensates, causing thus needs to roll up equipment investment, electric cost expenditure and follow-up operation maintenance cost;
3, for UNICOM lte1800, telecommunications lte1800 and telecommunications lte2100 standard equipment there are two network signal ports, but general POI product can only use 1 port, the network signal of another port is absorbed by load and wastes, not only cause covering power to reduce half, and the twin-channel high-speed wideband advantage of 4G-LTE cannot be played in some occasions;
4, for the indoor distribution built up, if want to increase some other standard network signals in existing indoor distribution antenna-feedback system, just must need to utilize POI product, but existing POI product causes network signal covering power significantly to reduce owing to closing the too low meeting of road efficiency; In order to meet coverage requirement, complicated adjustment being carried out to the backbone of indoor distribution antenna-feedback system with regard to needing and increases the various standard equipments of several times.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of new and effective multisystem mixing platform, restricts by the network signal that covering power is the most weak to solve existing POI product, causes and closes road inefficiency, builds and problem that maintenance cost is high.
Technical scheme: for achieving the above object, the invention provides following technical scheme:
A kind of efficient multisystem mixing platform, comprising: signal extension module, N number of rear class cavity combiner and N number of secondary cavity combiner, N be greater than 1 integer;
Described signal extension module, comprises multiple input and more than the multiple output of fan-in object, for accessing the network signal of first kind different systems, exports after primitive network signal extension, and the network signal of often kind of standard exports the identical signal in N road;
Described rear class cavity combiner, the network signal input and first comprising multiple different frequency range closes road signal output part, each input is according to the network signal Zhong mono-road signal of corresponding frequency range access after described signal extension module expansion, after output exports the network signal ECDC road of multiple frequency range first closes road signal, and N number of rear class cavity combiner exports the first identical conjunction road signal of N road;
Described secondary cavity combiner, comprise the first conjunction road signal input part with at least one for accessing the network signal input of the Equations of The Second Kind network signal more weak than first kind network signal covering power, described first conjunction road signal input part and rear class cavity combiner connect one to one, each secondary cavity combiner is used for closing first road signal and Equations of The Second Kind network signal and closes Lu Houcong output and export second and close road signal, and second of a secondary cavity combiner closes road signal output part and is used for connect corresponding with indoor distribution antenna-feedback system.
Preferably, described signal extension module comprises one or more in following expanding element:
First expanding element, for a kind of single channel network signal is extended to multi-channel network signal, comprises an input and N number of output, and input is for accessing a kind of network signal, and output is connected with an input of a rear class cavity combiner respectively;
Second expanding element, single channel network signal for the different systems by same frequency range is extended to N road network signal, comprise multiple input and N number of output, each input is for accessing a kind of network signal, and output is connected with an input of a rear class cavity combiner respectively;
3rd expanding element, binary channels network signal for the different systems by same frequency range is extended to N road network signal, comprise multiple input and N number of output, each input is for accessing an a kind of channel signal of network signal, and output is connected with an input of a rear class cavity combiner respectively;
4th expanding element, network signal for the different systems by same frequency range is extended to N road network signal, comprise multiple input and N number of output, wherein part input is for accessing dual channel network signal, another part input is for accessing single pass network signal, and output is connected with an input of a rear class cavity combiner respectively.
Preferably, described first expanding element comprises one one and enters four power splitters gone out.
Preferably, described second expanding element comprises the power splitter that one two electric bridge entering scene 2 and two enter scene 2, and two outputs of electric bridge connect the input of a power splitter respectively.
Preferably, described 3rd expanding element comprises the electric bridge that two two are entered scene 2, two inputs of each electric bridge are respectively used to Ge mono-road signal in access two kinds of binary channels network signals, and four outputs are connected with an input of a rear class cavity combiner respectively.
Preferably, described 4th expanding element comprises the electric bridge that one one power splitter entering scene 2 and two two enter scene 2, two outputs of power splitter are connected with an input of two electric bridges respectively, another input of two electric bridges is respectively used to the two-way output signal accessing binary channels network signal, and the input of power splitter is for accessing single channel network signal.
Beneficial effect: compared with prior art, the present invention is strong and weak according to the covering power of the network signal of different systems, the number of devices of various standard is reasonably arranged in pairs or groups according to the covering power situation of its network signal, network signal stronger for covering power is first expanded to multichannel, expansion Hou Mei road signal and the network signal of other standards carry out after one-level closes road, carry out secondary with the signal more weak without the covering power expanded again and close road, the covering power of all-network signal can be played completely, after solving prior art Zhong He road, covering power causes the problem of closing road inefficiency by the network signal that covering power is the poorest affects.Owing to have employed multiple rear class cavity combiner, prime expanding element can pass through the combination of electric bridge and/or power splitter, make full use of two port signals with dual channel devices, and the two-way network signal exported behind electric bridge combination road, the maximum achieving each road signal utilizes, and solves in prior art and adopts load to absorb wasting problem.Network construction form of the present invention is flexible, can be good at the demand meeting the various standard network signal of access, and is easy to expansion.
Accompanying drawing explanation
Fig. 1 is existing multisystem mixing platform structural representation.
Fig. 2 is multisystem mixing platform structural representation of the present invention.
Fig. 3 is multisystem mixing platform exemplary construction schematic diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
As shown in Figure 2, the disclosed a kind of efficient multisystem mixing platform of the embodiment of the present invention, comprising: signal extension module 10, multiple rear class cavity combiner 20 and multiple secondary cavity combiner 30.Rear class cavity combiner 20 determines with the covering power of the network signal that the number of secondary cavity combiner 30 accesses as required, expansion module 10 is for carrying out multichannel expansion by network signal stronger for covering power, each road enters a rear class cavity combiner 20 and synthesizes, and the network signal that the composite signal of output is more weak with covering power in secondary cavity combiner 30 again synthesizes.
Signal extension module 10 comprise in the first expanding element 11, second expanding element 12, the 3rd expanding element 13 and the 4th expanding element 14 one or more, reasonably can arrange in pairs or groups according to the kind of access network signal and device channels situation.
Wherein the first expanding element 11 is for being extended to multi-channel network signal by a kind of single channel network signal, comprises an input and multiple output, can realize signal extension with a power splitter.
Second expanding element 12 is extended to multi-channel network signal for the single channel network signal of the different systems by same frequency range, comprise multiple input and multiple output, can realize with electric bridge and power splitter combination, first by electric bridge, the network signal of different systems is carried out conjunction road, then expanded by the signal behind the involutory road of power splitter.
3rd expanding element 13 is extended to multi-channel network signal for the binary channels network signal of the different systems by same frequency range, comprise multiple input and multiple output, first the network signal of different systems passage can be carried out conjunction road with different electric bridge, then require to select adopt or do not adopt power splitter to expand according to expansion concrete signal port number.
4th expanding element 14 is extended to multi-channel network signal for the network signal of the different systems by same frequency range, binary channels is had plenty of in network signal, has plenty of single channel, 4th expanding element 14 comprises multiple input and multiple output, power splitter can be adopted single-channel expanded generate binary channels, and then adopt the 3rd expanding element 13 similar structures to expand signal.
The network signal input and first that rear class cavity combiner 20 is provided with multiple different frequency range closes road signal output part, each input is according to the network signal Zhong mono-road signal of corresponding frequency range access after signal extension module 10 is expanded, after output exports the network signal ECDC road of multiple frequency range first closes road signal, the first conjunction road signal that multiple rear class cavity combiner output multi-channel is identical;
Secondary cavity combiner 30 is provided with the first conjunction road signal input part and at least one is for the more weak network signal input of access covering ability, first conjunction road signal input part and rear class cavity combiner 20 connect one to one, each secondary cavity combiner 30 closes road signal and mixer at the corresponding levels access network signal by first closes Lu Houcong output and exports second and close road signal, and second of a secondary cavity combiner 30 closes road signal output part and is used for connect corresponding with indoor distribution antenna-feedback system.
Cover the network signal of the multiple types of mobile, UNICOM and the large operator of telecommunications three below at present for an access, a kind of efficient multisystem mixing platform describing the embodiment of the present invention in detail closes in the structure of embody rule scene and signal and passes by journey.
Table 1
Remarks 1: channel gain is 3dB(binary channels) or 0dB(single channel).
Remarks 2: the loss added value (with telecommunications cdma800 signal for benchmark) that antenna feeder loss balancing value is different frequency range signal under typical scene (by 50 meter 1/2 " feeder line).
Remarks 3: antenna opening power standard with typical scene (antenna cover standard room) for reference.
Remarks 4: antenna feeder loss limit value=pilot power+channel gain-transmission link loss balancing value-antenna opening power standard.
Remarks 5: covering power, in units of decibel dB, represents with maximum often the reducing 3dB and just need the number of devices that doubles for benchmark of antenna feeder loss limit value.
Remarks 6: because antenna opening power standard is generally within the scope of one (positive and negative 2dB), not fixed value, so can roughly extrapolate number of devices ratio according to covering power.
In table 1, the covering power of various standard network signals for access is carried out the calculating quantized, draws according to result of calculation: need mobile td(a) with mobile td(e) each 4 complete equipments of standard and other standard equipment each 1 overlap collocation and get up and just can give full play to covering power.
As shown in Figure 3, the network signal of other standard is first comprised signal extension module and rear class cavity combiner 1,2,3,4 at one-level POI(by the efficient multisystem mixing platform of this example) in complete and close road and export four identical tunnels, and then utilize secondary cavity combiner to move td(a with 4 tunnels respectively) and 4 tunnels move td(e) signal carries out secondary and closes road.
Take full advantage of the two-way network signal that two ports of UNICOM lte1800, telecommunications lte1800 and telecommunications lte2100 equipment and 2 road network signals carry out exporting when electric bridge prime closes road in one-level POI, and 4 rear class cavity combiners just can be used to export 4 road network signals and td(a is moved on 4 tunnels) and 4 tunnels move td(e) signal carries out secondary and closes road.
Telecommunications cdma800 signal is divided into four identical road signals by power splitter in one-level POI, and the corresponding port of 4 rear class cavity combiners is accessed on each road respectively;
Mobile gsm900 signal and UNICOM gsm900 signal are carrying out exporting two-way network signal after prime closes road through electric bridge in one-level POI, this two-way network signal forms 4 road network signals after accessing power splitter respectively again, then accesses the corresponding port of 4 rear class cavity combiners respectively;
Mobile dcs1800 signal is divided into four identical road signals by power splitter in one-level POI, and the corresponding port of 4 rear class cavity combiners is accessed on each road respectively;
The passage a signal of UNICOM lte1800 equipment and the passage a signal of telecommunications lte1800 equipment are carrying out through electric bridge the corresponding port accessing rear class cavity combiner 1,2 after prime closes road respectively in one-level POI; The passage b signal of UNICOM lte1800 equipment and the passage b signal of telecommunications lte1800 equipment are carrying out through electric bridge the corresponding port accessing rear class cavity combiner 3,4 after prime closes road respectively in one-level POI;
UNICOM wcdma signal carries out through electric bridge the corresponding port accessing rear class cavity combiner 1,2 after prime closes road respectively at a port of a road and telecommunications lte2100 equipment after being divided into two-way by power splitter in one-level POI; The b port of another road and telecommunications lte2100 equipment carries out through electric bridge the corresponding port accessing rear class cavity combiner 3,4 after prime closes road respectively;
The 4 road network signals that one-level POI exports access the corresponding port of 4 secondary cavity combiners respectively, simultaneously the mobile td(a of 4 cover) and mobile td(e) corresponding port of network signal also access 4 secondary cavity combiners respectively of equipment; The 4 road network signals that secondary cavity combiner exports access corresponding indoor distribution antenna-feedback system settling signal respectively and cover.
The network signal that rear class cavity combiner 1,2 in one-level POI exports and the network signal that rear class cavity combiner 3,4 exports can complete binary channels function under the scene needed.
Mobile td(a in the efficient multisystem mixing platform of this example) and mobile td(e) do not need to carry out conjunction road in one-level POI, so the rear class cavity combiner in one-level POI can reduce by two ports, this significantly reduces difficulty of processing and the cost of rear class cavity combiner.If made progress in the processing of rear class cavity combiner, also this two ports can be retained, td(a is moved on 4 tunnels) and road move td(e) network signal be directly connected on the corresponding port of rear class cavity combiner in one-level POI, and cancel secondary cavity combiner.
The efficient multisystem mixing platform of this example embodiment is compared with existing POI product, and tool has the following advantages:
1, existing POI product is due to the road network signal adopting load to absorb electric bridge output, causes subnetwork quorum sensing inhibitor ability drop by half, all utilizes in this POI to the two-way network signal that electric bridge exports, not waste; So do not affect covering power.
2, existing POI product does not carry out the matched combined of science to the network signal of various different systems, and the network signal covering power causing POI to export is greatly reduced; Show that the network signal of different systems has different covering powers by scientific algorithm in this POI, then a certain proportion of science collocation is carried out to the equipment of various standard, given play to the covering power of all-network signal completely.
3, existing POI product can only utilize a port of UNICOM lte1800, telecommunications lte1800 and telecommunications lte2100 equipment, causes covering power drop by half, and can not realize binary channels function; And two ports all make use of by the present invention, can also easily realize binary channels function simultaneously.
If 4 want to increase some other standard network signals in existing indoor distribution antenna-feedback system, just must need to utilize POI product, but existing POI product causes network signal covering power significantly to reduce owing to closing the too low meeting of road efficiency; In order to meet coverage requirement, complicated adjustment being carried out to the backbone of indoor distribution antenna-feedback system with regard to needing and increases the various standard equipments of about three times; Utilize the present invention then not need increase equipment, only need simply to adjust backbone.
Claims (6)
1. an efficient multisystem mixing platform, is characterized in that comprising: signal extension module, N number of rear class cavity combiner and N number of secondary cavity combiner, N be greater than 1 integer;
Described signal extension module, comprises multiple input and more than the multiple output of fan-in object, for accessing the network signal of first kind different systems, exports after primitive network signal extension, and the network signal of often kind of standard exports the identical signal in N road;
Described rear class cavity combiner, the network signal input and first comprising multiple different frequency range closes road signal output part, each input is according to the network signal Zhong mono-road signal of corresponding frequency range access after described signal extension module expansion, after output exports the network signal ECDC road of multiple frequency range first closes road signal, and N number of rear class cavity combiner exports the first identical conjunction road signal of N road;
Described secondary cavity combiner, comprise the first conjunction road signal input part with at least one for accessing the network signal input of the Equations of The Second Kind network signal more weak than first kind network signal covering power, described first conjunction road signal input part and rear class cavity combiner connect one to one, each secondary cavity combiner is used for closing first road signal and Equations of The Second Kind network signal and closes Lu Houcong output and export second and close road signal, and second of a secondary cavity combiner closes road signal output part and is used for connect corresponding with indoor distribution antenna-feedback system.
2. efficient multisystem mixing platform according to claim 1, is characterized in that, described signal extension module comprise in following expanding element one or more:
First expanding element, for a kind of single channel network signal is extended to multi-channel network signal, comprises an input and N number of output, and input is for accessing a kind of network signal, and output is connected with an input of a rear class cavity combiner respectively;
Second expanding element, single channel network signal for the different systems by same frequency range is extended to N road network signal, comprise multiple input and N number of output, each input is for accessing a kind of network signal, and output is connected with an input of a rear class cavity combiner respectively;
3rd expanding element, binary channels network signal for the different systems by same frequency range is extended to N road network signal, comprise multiple input and N number of output, each input is for accessing an a kind of channel signal of network signal, and output is connected with an input of a rear class cavity combiner respectively;
4th expanding element, network signal for the different systems by same frequency range is extended to N road network signal, comprise multiple input and N number of output, wherein part input is for accessing dual channel network signal, another part input is for accessing single pass network signal, and output is connected with an input of a rear class cavity combiner respectively.
3. multisystem mixing platform according to claim 2, is characterized in that: described first expanding element comprises one one and enters four power splitters gone out.
4. multisystem mixing platform according to claim 2, is characterized in that: described second expanding element comprises the power splitter that one two electric bridge entering scene 2 and two enter scene 2, and two outputs of electric bridge connect the input of a power splitter respectively.
5. multisystem mixing platform according to claim 2, it is characterized in that: described 3rd expanding element comprises the electric bridge that two two are entered scene 2, two inputs of each electric bridge are respectively used to Ge mono-road signal in access two kinds of binary channels network signals, and four outputs are connected with an input of a rear class cavity combiner respectively.
6. multisystem mixing platform according to claim 2, it is characterized in that: described 4th expanding element comprises the electric bridge that one one power splitter entering scene 2 and two two enter scene 2, two outputs of power splitter are connected with an input of two electric bridges respectively, another input of two electric bridges is respectively used to the two-way output signal accessing binary channels network signal, and the input of power splitter is for accessing single channel network signal.
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| CN106162669A (en) * | 2016-06-28 | 2016-11-23 | 浙江航洋通信科技有限公司 | The community of a kind of multi-operator mobile network fusion and building covering method |
| CN110324064A (en) * | 2019-07-11 | 2019-10-11 | 广东阿尔创通信技术股份有限公司 | The multisystem mixing device of low intermodulation |
| CN110601739A (en) * | 2019-09-09 | 2019-12-20 | 中国联合网络通信集团有限公司 | System and method for integrating antenna feeders |
| CN111092635A (en) * | 2018-10-24 | 2020-05-01 | 中国电信股份有限公司 | Multi-system access platform and access method based on multi-system access platform |
| CN114335961A (en) * | 2017-12-28 | 2022-04-12 | 中国电信股份有限公司 | Double-path coupler and indoor distribution system |
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