CN208754561U - Two base stations shared BBU and base station - Google Patents
Two base stations shared BBU and base station Download PDFInfo
- Publication number
- CN208754561U CN208754561U CN201821638514.XU CN201821638514U CN208754561U CN 208754561 U CN208754561 U CN 208754561U CN 201821638514 U CN201821638514 U CN 201821638514U CN 208754561 U CN208754561 U CN 208754561U
- Authority
- CN
- China
- Prior art keywords
- base station
- bbu
- rru
- baseband board
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 7
- 230000003287 optical effect Effects 0.000 description 9
- 230000009466 transformation Effects 0.000 description 7
- MWRWFPQBGSZWNV-UHFFFAOYSA-N Dinitrosopentamethylenetetramine Chemical compound C1N2CN(N=O)CN1CN(N=O)C2 MWRWFPQBGSZWNV-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model embodiment provides a kind of BBU and base station that two base stations are shared, shares a BBU by two base stations, BBU is concentrated, and more than carries out simple stack and places.The BBU that, region overlay smaller for cell capacity closes on can carry out BBU merging, save transmission port resource, reduce the space BBU, and power cost saving reduces the construction cost of base station.
Description
Technical field
The utility model relates to fields of communication technology, more particularly to a kind of BBU and base station that two base stations are shared.
Background technique
The existing each base station in the base station 4G include baseband processing unit (Building Base band Unit,
BBU), each BBU includes 6 baseband board slots, and the common base station 4G need to only use 2 or so baseband boards, cause the wave of BBU resource
Take, the high construction cost of the base station 4G.
Utility model content
The utility model embodiment provides a kind of BBU and base station that two base stations are shared, to solve BBU in the prior art
The problem of waste of resource, the high construction cost of the base station 4G.
The one aspect of the utility model embodiment is to provide a kind of BBU that two base stations are shared, comprising: control unit
Plate, at least one first baseband board being connect with described control unit plate, and connect with described control unit plate at least one
A second baseband board；
The RRU connection of at least one described first baseband board and first base station；
At least one described second baseband board is connect with the RRU of the second base station.
BBU as described above, optionally, the number of sectors of first base station and the second base station are less than or equal to 3, and each fan
There is 1 carrier wave in area.
BBU as described above, optionally, first base station and the second base station belong to the same tracking area.
BBU as described above, optionally, first base station and the second base station are the base station 4G.
The other side of the utility model embodiment provides a kind of base station, comprising: a BBU and at least one RRU；
The BBU includes: control unit plate, at least one first baseband board connecting with described control unit plate, and
At least one second baseband board being connect with described control unit plate；
First baseband board is connect with the RRU of the base station；
Second baseband board is connect with the RRU of another base station.
Base station as described above, optionally, the number of sectors of the base station and another base station are respectively less than or are equal to 3, and every
There is 1 carrier wave in a sector.
Base station as described above, optionally, the base station and another base station belong to the same tracking area.
Base station as described above, it is optionally, described if the sum for the baseband board that the BBU includes is greater than or equal to 3
The corresponding power panel of BBU and fan are d series board and the above version.
The other side of the utility model embodiment provides a kind of base station, comprising: at least one RRU；
The base station and another base station share a BBU, at least one described RRU is connect with the BBU of another base station.
Base station as described above, optionally, the base station and another base station belong to the same tracking area.
The shared BBU in two base stations provided by the embodiment of the utility model and base station share one by two base stations
BBU concentrates BBU, more than carries out simple stack and places.The BBU that, region overlay smaller for cell capacity closes on can
To carry out BBU merging, transmission port resource is saved, reduces the space BBU, power cost saving reduces the construction cost of base station.
Detailed description of the invention
Fig. 1 is the schematic diagram that two base stations provided by the embodiment of the utility model share BBU.
Through the above attached drawings, it has been shown that the specific embodiment of the utility model will be hereinafter described in more detail.These
Attached drawing and verbal description are not intended to limit the range of the utility model design in any manner, but by reference to specific
Embodiment is the concept that those skilled in the art illustrate the utility model.
Specific embodiment
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Term " first " involved in the utility model, " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic.It is " more in the description of following embodiment
It is a " it is meant that two or more, unless otherwise specifically defined.
These specific embodiments can be combined with each other below, may be at certain for the same or similar concept or process
It is repeated no more in a little embodiments.Below in conjunction with attached drawing, the embodiments of the present invention are described.
Fig. 1 is the schematic diagram that two base stations provided by the embodiment of the utility model share BBU.As shown in Figure 1, the second base station
20 share the BBU101 of first base station 10 with first base station 10.
As shown in Figure 1, shared BBU101 includes control unit plate 1011, it is connect with described control unit plate 1011
At least one first baseband board 1012, and at least one second baseband board 1013 being connect with described control unit plate 1011.
Wherein, at least one described first baseband board 1012 and first base station 10 Remote Radio Unit (Radio Remote Unit,
RRU it) connects.At least one described second baseband board 1013 is connect with the RRU of the second base station 20.
In the present embodiment, BBU includes multiple baseband board slots, and the first baseband board and the second baseband board are plugged in BBU's
On baseband board slot.First baseband board and the second baseband board share control unit plate.
In the present embodiment, shared BBU also can be set any one in two base stations for sharing the BBU in, this
In embodiment, will include sharing the base station of BBU as first base station, another base station is be illustrated for the second base station, this reality
Example is applied to be not specifically limited herein.
In the case where operator subtracts frequency logout, the overall background of OPEX fully optimized strategy, BBU is centrally placed, RRU is zoomed out
Lease of equipment room cost is saved in installation, is reduced OPEX, is a trend of subsequent networking.
The utility model embodiment shares a BBU by two base stations, and BBU is concentrated, and more than carries out simple
It stacks and places.The BBU that, region overlay smaller for cell capacity closes on can carry out BBU merging, save transmission port resource,
The space BBU is reduced, power cost saving reduces the construction cost of base station.
Two base stations of shared BBU in the present embodiment can be the base station 4G, or can also be it is same type of its
His base station, the present embodiment are not specifically limited herein.
In addition, first base station and the second base station belong to the same tracking area (tracking area, TA) in the present embodiment.
It that is to say, first base station and the second base station Tracking Area Code having the same (tracking area code, TAC).
In view of later period dilatation, when carrying out the transformation of the total BBU in base station, selection is less than or equal to the base of S111 site type
Station is transformed.Wherein, the base station of S111 site type includes 3 sectors, and there is a carrier wave in each sector.
Optionally, the number of sectors of first base station and the second base station that BBU is shared in the present embodiment is respectively less than or is equal to 3,
And there is 1 carrier wave in each sector.
When carrying out the transformation of the total BBU in base station, the locking relation of the first baseband board of the RRU and BBU of first base station is constant；
The second baseband board is added in first base station, and the RRU of the second base station is articulated on the second baseband board added in first base station.
Optionally, the RRU optical fiber of the second base station can be arranged according to the slot number that the second baseband board plugs.For example,
Assuming that first base station includes 3 RRU, the second base station includes 3 RRU.The first base band that 3 RRU of first base station already take up
The slot number that plate is plugged are as follows: 0,2,4；So, 3 RRU of the second base station are articulated to the second base that corresponding slot number is 1,3,5
On band plate.
Optionally, in order to meet the requirement of transmission bandwidth resource, the GE optical port of LTE control unit plate is used.
In addition, BBU change in location can cause the variation of RRU to BBU positional distance, and what is used is general after website merges
Public wireless electrical interface (Common Public Radio Interface, CPRI) optical mode block specifications can be related to replacing.
Optionally, according to the distance between the RRU of the second base station and the BBU of first base station after transformation, corresponding specification is selected
CPRI optical module.For example, the second base station can select the CPRI optical module for supporting distance connection.
Wherein, the second baseband board is added in first base station, and the original baseband board in the second base station can be used, it in this way can be with
Save the improvement cost of the total BBU in base station.In addition, adding the second baseband board in first base station, other baseband boards can also be used,
The present embodiment is not specifically limited herein.
The present embodiment provides a kind of base station, first base station 10 as shown in Figure 1, first base station 10 includes: a BBU101
With at least one RRU.The BBU101 includes: control unit plate 1011, at least one connecting with described control unit plate
One baseband board 1012, and at least one second baseband board 1013 being connect with described control unit plate.Wherein, first base
Band plate 1012 is connect with the RRU of first base station 10.Second baseband board 1013 is connect with the RRU of the second base station 20.
In the present embodiment, BBU includes multiple baseband board slots, and the first baseband board and the second baseband board are plugged in BBU's
On baseband board slot.First baseband board and the second baseband board share control unit plate.
First base station and the second base station belong to the same tracking area.It that is to say, first base station and the second base station are with identical
Tracking Area Code.
In view of later period dilatation, when carrying out the transformation of the total BBU in base station, selection is less than or equal to the base of S111 site type
Station is transformed.Wherein, the base station of S111 site type includes 3 sectors, and there is a carrier wave in each sector.
Optionally, the number of sectors of first base station and the second base station that BBU is shared in the present embodiment is respectively less than or is equal to 3,
And there is 1 carrier wave in each sector.
When carrying out the transformation of the total BBU in base station, the locking relation of the first baseband board of the RRU and BBU of first base station is constant；
The second baseband board is added in first base station, and the RRU of the second base station is articulated on the second baseband board added in first base station.
It is described if the sum for the baseband board that the BBU of first base station includes is greater than or equal to 3 in the present embodiment
The corresponding power panel of BBU and fan are d series board and the above version.
Optionally, in order to meet the requirement of transmission bandwidth resource, the GE optical port of LTE control unit plate is used.
The utility model embodiment shares a BBU by two base stations, and BBU is concentrated, and more than carries out simple
It stacks and places.The BBU that, region overlay smaller for cell capacity closes on can carry out BBU merging, save transmission port resource,
The space BBU is reduced, power cost saving reduces the construction cost of base station.
The present embodiment provides a kind of base stations, the second base station 20 as shown in Figure 1, and first base station 20 includes: at least one
RRU.In the present embodiment, the second base station 20 does not include BBU, and the second base station 20 shares the BBU of first base station 10.
The RRU of second base station 20 is articulated on the second baseband board 1012 of BBU101 in first base station 10.
In the present embodiment, first base station and the second base station belong to the same tracking area.It that is to say, first base station and the second base
It stands Tracking Area Code having the same.
In view of later period dilatation, when carrying out the transformation of the total BBU in base station, selection is less than or equal to the base of S111 site type
Station is transformed.Wherein, the base station of S111 site type includes 3 sectors, and there is a carrier wave in each sector.
Optionally, the number of sectors of first base station and the second base station that BBU is shared in the present embodiment is respectively less than or is equal to 3,
And there is 1 carrier wave in each sector.
In addition, BBU change in location can cause the variation of RRU to BBU positional distance, and what is used is general after website merges
Public wireless electrical interface (Common Public Radio Interface, CPRI) optical mode block specifications can be related to replacing.
Optionally, according to the distance between the RRU of the second base station and the BBU of first base station after transformation, corresponding specification is selected
CPRI optical module.For example, the second base station can select the CPRI optical module for supporting distance connection.
The utility model embodiment shares a BBU by two base stations, and BBU is concentrated, and more than carries out simple
It stacks and places.The BBU that, region overlay smaller for cell capacity closes on can carry out BBU merging, save transmission port resource,
The space BBU is reduced, power cost saving reduces the construction cost of base station.
It should be noted that needing to plan and configure again after the hardware modification that two base stations share BBU is completed
The parameter of BBU.
Based on the layout data in following table one and table two, data configuration is illustrated:
Table one
Table 2
Based on the layout data in following table one and table two, configured into following data:
1) RRU chain is added.Execute ADD RRUCHAIN order.
The frame slot of RRU chain and corresponding optical module port are consistent with practical fiber port.
ADD
RRUCHAIN:RCN=31, TT=CHAIN, BM=COLD, AT=LOCALPORT, HSRN=0, HSN=3, HPN
=1；
ADD
RRUCHAIN:RCN=33, TT=CHAIN, BM=COLD, AT=LOCALPORT, HSRN=0, HSN=3, HPN
=3；
ADD
RRUCHAIN:RCN=35, TT=CHAIN, BM=COLD, AT=LOCALPORT, HSRN=0, HSN=3, HPN
=5；
2) RRU is added.Execute ADD RRU order.
Be it is easy to maintain, need to fill in RN parameter be B stand station name.
ADD
RRU:CN=0, SRN=90, SN=0, TP=TRUNK, RCN=31, PS=0, RT=MRRU, RS=LO, RN="
Happy hotel ", RXNUM=2, TXNUM=2, ALMPROCTHRHLD=25, ALMTHRHLD=15；
ADD
RRU:CN=0, SRN=150, SN=0, TP=TRUNK, RCN=33, PS=0, RT=MRRU, RS=LO, RN
=" happy hotel ", RXNUM=2, TXNUM=2, ALMPROCTHRHLD=25, ALMTHRHLD=15；
ADD
RRU:CN=0, SRN=210, SN=0, TP=TRUNK, RCN=35, PS=0, RT=MRRU, RS=LO, RN
=" happy hotel ", RXNUM=2, TXNUM=2, ALMPROCTHRHLD=25, ALMTHRHLD=15；
3) sector is added.Execute ADD SECTORE order.
It needs in the light of actual conditions to fill in when adding fan antenna number, all opening such as antenna transmitting-receiving can be set
CREATESECTOREQM parameter is " TRUE " and fills in sector equipment number.
ADD
SECTOR:SECTORID=31, SECNAME=" sector_31 ", ANTNUM=2, ANT1CN=0, ANT1SRN
=90, ANT1SN=0, ANT1N=R0A, ANT2CN=0, ANT2SRN=90, ANT2SN=0, ANT2N=R0B, CREATE
SECTOREQM=TRUE, SECTOREQMID=31；
ADD
SECTOR:SECTORID=33, SECNAME=" sector_33 ", ANTNUM=2, ANT1CN=0, ANT1SRN
=1 50, ANT1SN=0, ANT1N=R0A, ANT2CN=0, ANT2SRN=150, ANT2SN=0, ANT2N=R0B, CREA
TESECTOREQM=TRUE, SECTOREQMID=33；
ADD
SECTOR:SECTORID=35, SECNAME=" sector_35 ", ANTNUM=2, ANT1CN=0, ANT1SRN
=2 10, ANT1SN=0, ANT1N=R0A, ANT2CN=0, ANT2SRN=210, ANT2SN=0, ANT2N=R0B, CREA
TESECTOREQM=TRUE, SECTOREQMID=35；
4) cell is added.Execute ADD CELL order.
Network optimization parameter will remain as before when adding cell, and LOCALCELLID will be distinguished with our station.
ADD CELL:LOCALCELLID=41, CELLNAME=" the happy hotel _ FL_A_1 of NJ_QX_HW_ ",
FREQBAND=3, ULEARFCNCFGIND=NOT_CFG, DLEARFCN=1650, ULBANDWID TH=CELL_BW_
N100, DLBANDWIDTH=CELL_BW_N100, CELLID=41, PHYCELLID=10, FD DTDDIND=CELL_FDD,
ROOTSEQUENCEIDX=251, CELLRADIUS=5000, CUSTOMIZEDBAN DWIDTHCFGIND=NOT_CFG,
EMERGENCYAREAIDCFGIND=NOT_CFG, UEPOWERMAXCFGIN D=NOT_CFG, MULTIRRUCELLFLAG=
BOOLEAN_FALSE, TXRXMODE=2T2R, USERLABEL=" the happy hotel _ FL_A_1 of NJ_QX_HW_ "；
ADD CELL:LOCALCELLID=51, CELLNAME=" the happy hotel _ FL_B_1 of NJ_QX_HW_ ",
FREQBAND=3, ULEARFCNCFGIND=NOT_CFG, DLEARFCN=1650, ULBANDWID TH=CELL_BW_
N100, DLBANDWIDTH=CELL_BW_N100, CELLID=51, PHYCELLID=12, FD DTDDIND=CELL_FDD,
ROOTSEQUENCEIDX=255, CELLRADIUS=5000, CUSTOMIZEDBAN DWIDTHCFGIND=NOT_CFG,
EMERGENCYAREAIDCFGIND=NOT_CFG, UEPOWERMAXCFGIN D=NOT_CFG, MULTIRRUCELLFLAG=
BOOLEAN_FALSE, TXRXMODE=2T2R, USERLABEL=" the happy hotel _ FL_B_1 of NJ_QX_HW_ "；
ADD CELL:LOCALCELLID=61, CELLNAME=" the happy hotel _ FL_C_1 of NJ_QX_HW_ ",
FREQBAND=3, ULEARFCNCFGIND=NOT_CFG, DLEARFCN=1650, ULBANDWID TH=CELL_BW_
N100, DLBANDWIDTH=CELL_BW_N100, CELLID=61, PHYCELLID=14, FD DTDDIND=CELL_FDD,
ROOTSEQUENCEIDX=259, CELLRADIUS=5000, CUSTOMIZEDBAN DWIDTHCFGIND=NOT_CFG,
EMERGENCYAREAIDCFGIND=NOT_CFG, UEPOWERMAXCFGIN D=NOT_CFG, MULTIRRUCELLFLAG=
BOOLEAN_FALSE, TXRXMODE=2T2R, USERLABEL=" the happy hotel _ FL_C_1 of NJ_QX_HW_ "；
5) cell operator information is added.Execute ADD CELLOP order.
ADD
CELLOP:LOCALCELLID=41, TRACKINGAREAID=0, MMECFGNUM=CELL_MME_CFG_NUM_
0；
ADD
CELLOP:LOCALCELLID=51, TRACKINGAREAID=0, MMECFGNUM=CELL_MME_CFG_NUM_
0；
ADD
CELLOP:LOCALCELLID=61, TRACKINGAREAID=0, MMECFGNUM=CELL_MME_CFG_NUM_
0；
6) cell sector equipment is added.Execute ADD EUCELLSECTOREQM order.
ADD EUCELLSECTOREQM:LOCALCELLID=41, SECTOREQMID=31；
ADD EUCELLSECTOREQM:LOCALCELLID=51, SECTOREQMID=33；
ADD EUCELLSECTOREQM:LOCALCELLID=61, SECTOREQMID=35；
7) network optimization parameter is modified.
8) LICENSE file is loaded.
In addition, test verifying is carried out to existing network service after the completion of above-mentioned data configuration,
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of BBU that two base stations are shared characterized by comprising control unit plate is connect with described control unit plate
At least one first baseband board, and at least one second baseband board being connect with described control unit plate；
The RRU connection of at least one described first baseband board and first base station；
At least one described second baseband board is connect with the RRU of the second base station.
2. BBU according to claim 1, which is characterized in that first base station and the number of sectors of the second base station are less than or wait
In 3, and there is 1 carrier wave in each sector.
3. BBU according to claim 1, which is characterized in that first base station and the second base station belong to the same tracking area.
4. BBU according to claim 1-3, which is characterized in that first base station and the second base station are the base station 4G.
5. a kind of base station characterized by comprising a BBU and at least one RRU；
The BBU includes: control unit plate, at least one first baseband board connecting with described control unit plate, and with institute
State at least one second baseband board of control unit plate connection；
First baseband board is connect with the RRU of the base station；
Second baseband board is connect with the RRU of another base station.
6. base station according to claim 5, which is characterized in that the number of sectors of the base station and another base station be respectively less than or
Equal to 3, and there is 1 carrier wave in each sector.
7. base station according to claim 5, which is characterized in that the base station and another base station belong to the same tracking
Area.
8. according to the described in any item base stations claim 5-7, which is characterized in that
If the sum for the baseband board that the BBU includes is greater than or equal to 3, the corresponding power panel of the BBU and fan are d series
Board and the above version.
9. a kind of base station characterized by comprising at least one RRU；
The base station and another base station share a BBU, at least one described RRU is connect with the BBU of another base station.
10. base station according to claim 9, which is characterized in that
The base station and another base station belong to the same tracking area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821638514.XU CN208754561U (en) | 2018-10-09 | 2018-10-09 | Two base stations shared BBU and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821638514.XU CN208754561U (en) | 2018-10-09 | 2018-10-09 | Two base stations shared BBU and base station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208754561U true CN208754561U (en) | 2019-04-16 |
Family
ID=66085630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821638514.XU Active CN208754561U (en) | 2018-10-09 | 2018-10-09 | Two base stations shared BBU and base station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208754561U (en) |
-
2018
- 2018-10-09 CN CN201821638514.XU patent/CN208754561U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200328764A1 (en) | Radio frequency front-end circuit, circuit board thereof and terminal | |
| CN104081795B (en) | Virtualize wireless network | |
| US8711951B2 (en) | Powerline communication device with load characterization functionality | |
| CN101188818B (en) | Base station, processing method for its baseband signal and wireless communication system | |
| CN101202975B (en) | Multi-mode radio communication base station control system | |
| US20120071184A1 (en) | Base station having a plurality of logical base stations | |
| CN102917476B (en) | A kind of integrated base station system | |
| CN101814957B (en) | WiFi (Wireless Fidelity) optical fiber radio central control system | |
| CN106385696A (en) | Business processing method, related equipment, and system | |
| CN102404849B (en) | Method for realizing baseband resource allocation in base station machine frame and system for realizing baseband resource allocation in base station machine frame | |
| CN208754561U (en) | Two base stations shared BBU and base station | |
| CN102740508B (en) | Active covering array | |
| WO2012097630A1 (en) | Ring network configuration method and apparatus | |
| CN102802211B (en) | Techniques for augmented functionality by sharing wireless resources | |
| CN217363064U (en) | 5G room divides double-circuit system of shifting frequency | |
| CN203942528U (en) | A kind of wireless coverage strengthens equipment | |
| CN203632668U (en) | MIMO communication system | |
| CN110769428A (en) | Method and device for constructing virtual base station, base station and wireless network system | |
| CN206490836U (en) | Radio signal coverage system | |
| US11329385B2 (en) | Tripod radiating element | |
| CN105229930A (en) | Distributing antenna system and near-end machine | |
| CN105978036A (en) | Remote monitoring method and system of distributed power generation system | |
| CN205071446U (en) | Compatible PCB board | |
| CN203340241U (en) | Intelligent management system based on wireless transmission for optical fibre distribution frame | |
| CN216960205U (en) | Communication device and base station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |