CN203327011U - BBU+RRU networking architecture - Google Patents
BBU+RRU networking architecture Download PDFInfo
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- CN203327011U CN203327011U CN2013202307829U CN201320230782U CN203327011U CN 203327011 U CN203327011 U CN 203327011U CN 2013202307829 U CN2013202307829 U CN 2013202307829U CN 201320230782 U CN201320230782 U CN 201320230782U CN 203327011 U CN203327011 U CN 203327011U
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- division multiplexer
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- wave division
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Abstract
The utility model discloses a BBU+RRU networking architecture which comprises a BBU, a near-end main coarse wavelength division multiplexer, a near-end standby coarse wavelength division multiplexer, at least one stage of far-end main coarse wavelength division multiplexer, at least one stage of far-end standby coarse wavelength division multiplexer, a plurality of RRUs, and optical fibers. Three main light ports of the BBU and three standby light ports of the BBU form a plurality of looped networks through the coarse wavelength division multiplexers, the optical fibers and the plurality of RRUs, thereby developing a novel looped-network distribution scheme. The beneficial effects of the utility model comprise: a, saving optical fiber resources; b, reducing construction difficulty of an optical fiber pipeline; c, providing a function of looped-network cure; d, improving utilization efficiency of the light ports; e, inhibiting cascade interference of an uplink RRU.
Description
Technical field
The utility model relates to communication technical field, is specifically related to a kind of group-network construction of communication network.
Background technology
Along with further developing of TD-SCDMA, TD-LTE, for domestic mobile operator, exist site resource to be difficult to the problem obtained, the leased land expense is higher.Particularly, can rent the place of putting antenna, be difficult to rent machine room.Such as, the roof in possible Zai Yizuo building is applicable to the antenna of mounted base station, but machine room can't be rented in the Zhe Zuo building, or may only have basement may rent machine room.Like this, machine room is distant from the distance of antenna, if use feeder, loss ratio is larger.
Based on this, following based on the baseband pool framework, the Node B system that RRU far puts (Node B is the address of the arrival mobile base station of 3G network) will be a type of the most generally applying in Scaledeployment.And the BBU+RRU group-network construction is the main solution of TD-SCDMA indoor signal compartment system at present.Wherein, BBU(Building Base band Unit, indoor baseband processing unit) structure referring to Fig. 1; RRU(Radio Remote Unit, Remote Radio Unit) structure is referring to Fig. 2.
After prior art is used the remote radio pattern, there is the problem that between BBU and RRU, networking is connected.Each light mouth can be shared transfer resource by a plurality of RRU of cascade.Also has drawn thus multiple networking mode, comprised star-like networking, chain networking and annular networking, and the defect of existing networking mode is described as follows:
Adopt star-like networking mode, lower to light mouth resource utilization, and waste too much the feeder line resource, the networking construction is contracted higher.
Adopt the chain networking mode, high to light mouth resource utilization, but because link is too many, prime RRU fault can cause all RRU of rear class not work, and reliability is not high.
Adopt the annular networking mode, to a certain extent customer service the drawback of star-like networking and chain type networking, but can waste a large amount of fiber resources, increase the arrange net difficulty of construction of FDDI FDM Fiber Duct.
The utility model content
The utility model purpose is to provide a kind of novel BBU and adds the RRU group-network construction, can improve light mouth utilance, possess looped network cure defencive function, when reducing building and arranging net to the use of fiber resource, reduce the arrange net difficulty of construction, the cascade that suppresses up RRU of FDDI FDM Fiber Duct and disturb.The utility model is realized by following technical scheme:
A kind of BBU adds the RRU group-network construction, comprising: the standby Coarse Wave Division Multiplexer of BBU, near-end master Coarse Wave Division Multiplexer, near-end, at least one-level far-end master Coarse Wave Division Multiplexer, at least standby Coarse Wave Division Multiplexer of one-level far-end, some RRU and optical fiber; The key light mouth of BBU connects near-end master Coarse Wave Division Multiplexer, and near-end master Coarse Wave Division Multiplexer connects at least one-level far-end master Coarse Wave Division Multiplexer by optical fiber, and at least one-level far-end master Coarse Wave Division Multiplexer connects RRU; The standby light mouth of BBU connects the standby Coarse Wave Division Multiplexer of near-end, and the standby Coarse Wave Division Multiplexer of near-end connects at least standby Coarse Wave Division Multiplexer of one-level far-end by optical fiber, and at least the standby Coarse Wave Division Multiplexer of one-level far-end connects RRU.
As further technical scheme, described optical fiber all adopts the single mode single-core fiber.
As further technical scheme, described BBU light mouth module is the light emission, receives integrated digital modulation and demodulation transceiver module.
In the utility model, three key light mouths and three the standby light mouths of BBU, by Coarse Wave Division Multiplexer, optical fiber and a plurality of RRU, form a plurality of looped networks, formed the novel looped network scheme of arranging net.The beneficial effects of the utility model are: a. saves fiber resource; B. reduce the FDDI FDM Fiber Duct difficulty of construction; C. provide looped network to cure function; D. improve light mouth utilization ratio; E. suppressing the cascade of up RRU disturbs.
The accompanying drawing explanation
The organigram that Fig. 1 is indoor baseband processing unit (BBU).
The organigram that Fig. 2 is Remote Radio Unit (RRU).
The BBU that Fig. 3 provides for the utility model embodiment adds the organigram of RRU group-network construction.
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Embodiment
As shown in Figure 3, the BBU that the present embodiment provides adds the RRU group-network construction, comprising: BBU, near-end master Coarse Wave Division Multiplexer (main CWDM-1), the standby Coarse Wave Division Multiplexer of near-end (standby CWDM-1), one-level far-end master Coarse Wave Division Multiplexer (main CWDM-2), the standby Coarse Wave Division Multiplexer of one-level far-end (standby CWDM-2), secondary far-end master Coarse Wave Division Multiplexer (main CWDM-3), the standby Coarse Wave Division Multiplexer of secondary far-end (standby CWDM-3), some RRU and monomode fiber (SMF).
Three key light mouths of BBU are connected with near-end master Coarse Wave Division Multiplexer, near-end master Coarse Wave Division Multiplexer is connected with one-level far-end master Coarse Wave Division Multiplexer through monomode fiber, one-level far-end master Coarse Wave Division Multiplexer separates the two-way light path, one tunnel connects RRU-0, RRU-1, RRU-2, another road is through monomode fiber, separate two-way by secondary far-end master Coarse Wave Division Multiplexer, a road connects RRU-3, RRU-4, RRU-5 again, and another road connects RRU-6, RRU-7, RRU-8, RRU-9 through monomode fiber again.
Three standby light mouths of BBU are connected with the standby Coarse Wave Division Multiplexer of near-end, the standby Coarse Wave Division Multiplexer of near-end is connected through the standby Coarse Wave Division Multiplexer of monomode fiber and one-level far-end, the standby Coarse Wave Division Multiplexer of one-level far-end separates the two-way light path, one tunnel connects RRU-0, RRU-1, RRU-2, another road is through monomode fiber, separate two-way by the standby Coarse Wave Division Multiplexer of secondary far-end, a road connects RRU-3, RRU-4, RRU-5 again, and another road connects RRU-6, RRU-7, RRU-8, RRU-9 through monomode fiber again.
Down link: take the key light mouth as example, three key light mouths of BBU are exported 1350nm, 1370nm and 1390nm optical carrier, close road by main CWDM-1 transmits in monomode fiber, while arriving main CWDM-2, separate 1350nm and 1370nm, 1390nm two-way optical carrier, after the 1350nm optical carrier enters RRU-0, RRU-1, RRU-2, through opto-electronic conversion, after amplifying, filtering, D/A conversion, protocol processes, mixing, radio frequency by antenna transmission, carry out the building indoor coverage of signal; The optical carrier of another road 1370nm, 1390nm passes through monomode fiber, go out along separate routes the optical carrier of 1370nm and 1390nm after being transferred to main CWDM-3, after the 1370nm optical carrier enters RRU-3, RRU-4, RRU-5, through opto-electronic conversion, after amplifying, filtering, D/A conversion, protocol processes, mixing, radio frequency by antenna transmission, carry out the building indoor coverage of signal; The optical carrier of another road 1390nm, by Optical Fiber Transmission, after entering RRU-6, RRU-7, RRU-8, RRU-9, through opto-electronic conversion, by antenna transmission, carry out the building indoor coverage of signal after filtering, D/A conversion, protocol processes, mixing, radio frequency amplify.
Up link: take the key light mouth as example, after terminal signaling enters respectively RRU-6, RRU-7, RRU-8, RRU-9 by antenna, frequency reducing, A/D conversion, protocol processes, then pass through electrooptic modulation, be modulated on the 1570nm light wave; After terminal signaling enters respectively RRU-3, RRU-4, RRU-5 by antenna, frequency reducing, A/D conversion, protocol processes, then pass through electrooptic modulation, be modulated on the 1370nm light wave; After terminal signaling enters respectively RRU-0, RRU-1, RRU-2 by antenna, frequency reducing, A/D conversion, protocol processes, then pass through electrooptic modulation, be modulated on the 1370nm light wave.1570nm optical carrier and 1370nm optical carrier close road by main CWDM-3 and transmit in monomode fiber SMF, close road with the 1350nm optical carrier by main CWDM-2 again and be transferred to main CWDM-1 in monomode fiber SMF, and then three optical carriers enter three key light mouths of BBU.
The transmission of uplink and downlink link signal, the processing of standby light mouth are identical with the key light mouth, repeat no more herein.Standby light mouth is after fault has appearred in certain RRU, and use is activated.For example: fault has appearred in RRU-7 equipment, if now there is no standby functions, RRU-8, RRU-9 just can not work so, and loop stand-by protection function has just solved this problem.
The beneficial effects of the utility model are: a. saves fiber resource; B. reduce the FDDI FDM Fiber Duct difficulty of construction; C. provide looped network to cure function; D. improve light mouth utilization ratio; E. suppressing the cascade of up RRU disturbs.
Claims (3)
1. a BBU adds the RRU group-network construction, it is characterized in that, comprising: the standby Coarse Wave Division Multiplexer of BBU, near-end master Coarse Wave Division Multiplexer, near-end, at least one-level far-end master Coarse Wave Division Multiplexer, at least standby Coarse Wave Division Multiplexer of one-level far-end, some RRU and optical fiber; The key light mouth of BBU connects near-end master Coarse Wave Division Multiplexer, and near-end master Coarse Wave Division Multiplexer connects at least one-level far-end master Coarse Wave Division Multiplexer by optical fiber, and at least one-level far-end master Coarse Wave Division Multiplexer connects RRU; The standby light mouth of BBU connects the standby Coarse Wave Division Multiplexer of near-end, and the standby Coarse Wave Division Multiplexer of near-end connects at least standby Coarse Wave Division Multiplexer of one-level far-end by optical fiber, and at least the standby Coarse Wave Division Multiplexer of one-level far-end connects RRU.
2. BBU according to claim 1 adds the RRU group-network construction, it is characterized in that, described optical fiber all adopts the single mode single-core fiber.
3. BBU according to claim 1 adds the RRU group-network construction, it is characterized in that, described BBU light mouth module is the light emission, receives integrated digital modulation and demodulation transceiver module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202307829U CN203327011U (en) | 2013-04-30 | 2013-04-30 | BBU+RRU networking architecture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202307829U CN203327011U (en) | 2013-04-30 | 2013-04-30 | BBU+RRU networking architecture |
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| CN203327011U true CN203327011U (en) | 2013-12-04 |
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| CN2013202307829U Expired - Fee Related CN203327011U (en) | 2013-04-30 | 2013-04-30 | BBU+RRU networking architecture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733522A (en) * | 2017-10-19 | 2018-02-23 | 北京全路通信信号研究设计院集团有限公司 | A kind of LTE R loop-type network systems |
| CN110366216A (en) * | 2018-04-10 | 2019-10-22 | 华为技术有限公司 | The method and communication device of communication |
-
2013
- 2013-04-30 CN CN2013202307829U patent/CN203327011U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733522A (en) * | 2017-10-19 | 2018-02-23 | 北京全路通信信号研究设计院集团有限公司 | A kind of LTE R loop-type network systems |
| CN110366216A (en) * | 2018-04-10 | 2019-10-22 | 华为技术有限公司 | The method and communication device of communication |
| CN110366216B (en) * | 2018-04-10 | 2021-07-20 | 华为技术有限公司 | Communication method and communication device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20190430 |