CN201594821U - Base station device - Google Patents
Base station device Download PDFInfo
- Publication number
- CN201594821U CN201594821U CN201020001919XU CN201020001919U CN201594821U CN 201594821 U CN201594821 U CN 201594821U CN 201020001919X U CN201020001919X U CN 201020001919XU CN 201020001919 U CN201020001919 U CN 201020001919U CN 201594821 U CN201594821 U CN 201594821U
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- antenna
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- trx
- transceiver channel
- antenna oscillator
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Abstract
The utility model discloses a base station device, which comprises antenna oscillators and transmitting-receiving channels TRX-L. Each antenna oscillator is connected with one transmitting-receiving channel TRX-L; each transmitting-receiving channel TRX-L is connected with one antenna oscillator; and each transmitting-receiving channel TRX-L processes baseband signals transmitted by a baseband signal processing unit BBU and transmits the processed signals to the antenna oscillator connected with the transmitting-receiving channel TRX-L. The base station device is capable of reducing signal loss.
Description
Technical field
The utility model relates to the mobile communication technology field, relates in particular to a kind of base station equipment.
Background technology
Fig. 1 is that the distributed base station that present 3G (Third Generation) Moblie (3G) system generally adopts is formed schematic diagram.
As shown in Figure 1, this base station is made up of baseband signal processing unit (BBU), intermediate frequency and radiofrequency signal processing unit (RRU) and antenna.Wherein, connect by optical fiber between BBU and the RRU, connect by cable between RRU and the antenna.In multiaerial system, every antenna all links to each other with transceiver channel (TRX) among the RRU by cable, that is to say each antenna channels all corresponding a TRX.For example in the TD-SCDMA system and TD-LTE system that adopt 8 antennas, there are 8 TRX to link to each other with 8 antennas respectively among the RRU by 8 cables.
Fig. 2 is that antenna is formed schematic diagram.
As shown in Figure 2, every antenna is made up of a plurality of antenna oscillators, and each antenna oscillator is vertical arrangement from top to bottom.Each antenna oscillator links to each other with antenna port by coupling network.When transmitting, the radiofrequency signal after RRU handles, is coupled on each antenna oscillator by coupling network behind antenna port by cable transmission, launches via antenna oscillator.When received signal, each antenna oscillator the signal of its reception is coupled by coupling network after by cable transmission to RRU, RRU handles the signal that receives.
Fig. 3 is that schematic diagram is formed in the inside of distributed base station shown in Figure 1.
Among Fig. 3, every corresponding TRX of antenna, by this TRX the signal of issuing this antenna is handled, and then the signal allocation after will handling by coupling network is given each antenna oscillator of this antenna, perhaps the signal of each antenna oscillator reception of this antenna is issued TRX after coupling network is coupled into one road signal, handled by TRX, the signal after will handling is again issued BBU.
Among Fig. 1, the cable two ends adopt special joint to connect antenna and RRU respectively, and this special joint need carry out special water-proofing treatment in order to avoid the equipment water inlet exerts an influence to stabilization of equipment performance.In addition, in engineering construction, also must connect closely unanimity by each joint of assurance,, therefore adopt cable connection RRU and antenna higher, and break down easily construction requirement to avoid occurring the joint standing-wave ratio alarm.
In addition, the generally long 3-6 rice of the cable between RRU and the antenna, the loss of signal that cable and two end interfaces thereof cause is generally at 1-2dB.In addition, signal also needs to be assigned to each antenna oscillator through coupling network and gets in antenna inside, and this coupling network generally can produce the excess loss about 1.5dB.Therefore, between RRU and antenna oscillator, there is the loss about 3dB, causes downlink power amplifier (PA) power demand to strengthen, also have influence on the sensitivity of up reception simultaneously.And bigger power loss requires to adopt powerful TRX device in RRU, has also increased equipment cost.
Cause the problem of loss of signal at cable construction difficult technologies problem and cable, occurred at present a kind of on physical structure with antenna and the integrated technical scheme of RRU, RRU placed the antenna back side on physical structure, the two is by the connection that interlocks of blind connection-peg.
This scheme has been saved cable, changes the external jointing among Fig. 1 into blind connection-peg simultaneously, has reduced the engineering construction difficulty to a certain extent.In addition, owing to saved cable, so the loss of signal of also having avoided cable to cause.
Yet, because this scheme only is original RRU and antenna to be carried out integratedly on physical structure, still having coupling network in antenna inside, the loss of signal that this coupling network causes still can't be eliminated.And in multiaerial system, need the blind connection-peg of multichannel, the consistency of the blind connection-peg of multichannel, intensity and reliability to be difficult to guarantee, there is certain risk in actual applications.On the other hand, each antenna oscillator vertical arrangement, every antenna is assigned to signal to be transmitted on each antenna oscillator by coupling network, this coupling network only plays the effect of power division, can't carry out wave beam forming in vertical direction, during the different system common antenna, also can't independently adjust the antenna tilt of each system.
The utility model content
In view of this, the purpose of the utility model embodiment is to provide a kind of base station equipment, to reduce loss of signal.
For achieving the above object, the technical scheme of the utility model embodiment specifically is achieved in that
A kind of base station equipment, this base station equipment comprise antenna oscillator and transceiver channel TRX-L, and each antenna oscillator connects a transceiver channel TRX-L, and each transceiver channel TRX-L connects an antenna oscillator;
Each transceiver channel TRX-L handles the baseband signal that baseband signal processing unit BBU sends, and the signal after handling is issued the antenna oscillator that links to each other with this transceiver channel TRX-L.
By such scheme as seen, the antenna oscillator number that the utility model comprises according to an antenna, the signal demultiplexing of issuing an antenna is handled respectively, directly issue corresponding antenna oscillator afterwards, do not need coupling network to give each antenna oscillator, therefore can eliminate the loss of signal that coupling circuit causes signal allocation.
In addition, because will issue the signal demultiplexing of an antenna handles respectively, the power of every road signal is less, therefore every road signal being carried out the device that radiofrequency signal handles can be lower powered radio-frequency devices, the radio-frequency devices that for example is used for mobile phone terminal, because it is much lower that lower powered radio-frequency devices and powerful radio-frequency devices are compared price, so the utility model adopts performance number can also reduce equipment cost less than the radio-frequency devices of predetermined value.
Description of drawings
Fig. 1 is that the distributed base station that present 3G (Third Generation) Moblie (3G) system generally adopts is formed schematic diagram.
Fig. 2 is that antenna is formed schematic diagram.
Fig. 3 is that schematic diagram is formed in the inside of distributed base station shown in Figure 1.
Fig. 4 is the base station equipment structure chart that the utility model provides.
Fig. 5 is the detailed structure view of the base station equipment that provides of the utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.
Fig. 4 is the base station equipment structure chart that the utility model provides.
As shown in Figure 4, this base station equipment comprises antenna oscillator 401 and transceiver channel TRX-L402, each antenna oscillator 401 connects a transceiver channel TRX-L402, and each transceiver channel TRX-L402 connects an antenna oscillator 401, and antenna oscillator 401 is identical with transceiver channel TRX-L402 number.
Each transceiver channel TRX-L402 handles the baseband signal that baseband signal processing unit BBU sends, and the signal after handling is issued the antenna oscillator 401 that links to each other with this transceiver channel TRX-L402.
Owing to adopt transceiver channel TRX-L402 to handle respectively to each antenna oscillator 401, make the granularity of signal processing reduce, signal processing is meticulousr and reliable, if wherein there is part transceiver channel TRX-L402 to break down, can not influence the correctness of the signal of other antenna oscillators 401 receptions yet.
Antenna oscillator 401 wherein is positioned at antenna-reflected plate one side, and transceiver channel TRX-L402 is positioned at antenna-reflected plate opposite side, and antenna oscillator 401 and the transceiver channel TRX-L402 joint by antenna-reflected plate both sides links to each other or is connected by cable.
When connecting by cable, do not need to adopt the blind connection-peg of multichannel, reduced difficulty of construction, improved the stability of a system simultaneously.
Antenna oscillator 401 and TRX-L402 also can be positioned at the same side of antenna-reflected plate.
Each TRX-L402 all is connected to (not shown in Fig. 3) on the digital combiner-divider, and this numeral combiner-divider is used for the signal that each TRX-L402 sends is combined into one the tunnel, and the signal that BBU is sent is divided into multichannel and issues each TRX-L402 respectively.
Each transceiver channel TRX-L402 adopts separately amplitude weights and phase place weights to carry out signal processing respectively.
The amplitude weights that each transceiver channel TRX-L402 adopts respectively can be different, and the phase place weights also can be different.
Adopt different amplitude weights and phase place weights to handle by signal to the different antennae oscillator of same antenna, can adjust the inclination angle of this antenna, adjust antenna tilt with available technology adopting mechanical system or circuit mode and compare, make the adjustment of antenna tilt become more flexible.And, when multisystem collective antenna, adopt different amplitude weights and phase place weights by signal to different system, can also adjust the antenna tilt of each system independently.
The utility model adopts transceiver channel TRX-L402 to carry out independent processing respectively by the receiving and transmitting signal to each antenna oscillator 401 of each antenna, therefore can access level and vertical two dimensional channel matrix by channel estimating, thereby utilize the reciprocity of the up-downgoing channel of multiaerial systems such as TDD, realize the wave beam forming of horizontal direction and vertical direction simultaneously, point to thereby control user wave beam neatly.Wherein the wave beam forming of vertical direction can bring following benefit:
By the forming coefficient of a plurality of oscillators of same antenna being adjusted in the Base-Band Processing part, can adjust the wave beam of cell signal neatly in vertical direction, realized adjusting the angle of declination of antenna in cell from software, compared more simple and convenient with the mode that traditional employing machinery or motor mode are adjusted Downtilt.
Further, when multisystem collective antenna, can carry out independent channel at the different system signal in vertical direction and estimate and wave beam forming, thereby be equivalent to the independent angle of declination of adjusting antenna in different system, can't independently adjust the problem at inclination angle when having solved the existing TDD multisystem collective antenna.
Fig. 5 is the detailed structure view of the base station equipment that provides of the utility model.
Structure shown in Figure 5 shows digital co-shunt module 503 on the basis of structure shown in Figure 4, show the structure of TRX-L402 simultaneously.
Each transceiver channel TRX-L402 links to each other with digital co-shunt module 503, the optical fiber interface of numeral co-shunt module 503 links to each other with baseband signal processing unit BBU by optical fiber, issue baseband signal processing unit BBU by optical fiber after the signal that numeral co-shunt module 503 is sent each transceiver channel TRX-L402 is combined into one the tunnel, will give each transceiver channel TRX-L402 from the baseband signal of baseband signal processing unit BBU.
Transceiver channel TRX-L402 wherein is made up of filter, circulator, power amplifier and emission element Tx and receiving-member Rx, and the annexation of each parts is referring to Fig. 4:
Directly adopt the microstrip line circuit to connect between each parts.
After signal was handled by emission element during downlink, the ingoing power amplifier amplified, and the signal after the amplification is radiate by antenna oscillator after by circulator and filter;
During up reception, the signal that receives from antenna oscillator enters low noise amplifier LNA via circulator and amplifies by behind the filter filtering, and the signal after the amplification enters digital co-shunt module after being handled by receiving-member Rx.
Be provided with among emission element Tx wherein and the receiving-member Rx and be used to carry out intermediate-freuqncy signal module of handling and the module that is used to carry out the radiofrequency signal processing.
The described performance number that is used to carry out the module that radiofrequency signal handles promptly can adopt lower powered radio-frequency devices, even can adopt the radio-frequency devices that is used for mobile phone terminal less than predetermined value.
In a word, the utility model proposes with the integrated modularization RRU structure of antenna oscillator, the every road transceiver module TRX that is made up of high power device in the prior art is replaced with the transceiver channel TRX-L that the multirouting low-power device is formed, thereby can adopt the transceiving chip of mobile phone terminal to reduce cost on the one hand as described transceiver channel TRX-L, for example: suppose that the every road TRX transmit power needs among traditional RRU is 20W, need to use high-power base station ic to realize, every antenna has 8 antenna oscillators, for satisfying same 20W transmitting power, the transmit power needs of each TRX-L only is about 1W in the utility model, wherein, power demand is specially: (the inside and outside cable loss of 20W-)/8, this moment is near the power index of terminal chip, can adopt the low power devices that is similar to the terminal radio frequency chip to realize fully, though this moment, the TRX-L number of every road antenna channels increased to 8 times (the every road of traditional RRU antenna channels only needs one road TRX), but the transmitting-receiving TRX-L cost of being made up of low power devices is well below the high power device cost, there is the difference of several magnitude in both, so total cost has still obtained reducing largely; On the other hand, each TRX-L is corresponding one by one with antenna oscillator, can directly be integrated on the antenna oscillator or by short line in inside or socket directly to connect, and has avoided fully because coupling network carries out the loss that power division causes.
Antenna and RRU are integrated, externally keep optical fiber interface, have avoided the use of outside feeder or blind connection-peg, and antenna-feedback system construction complexity reduces greatly, and Joint Reliability also is improved.
Save the loss of external connection line cable, joint and antenna inner couplings network, saved down transmitting power, promoted last line sensitivity.
The above; it only is preferred embodiment of the present utility model; be not to be used to limit protection range of the present utility model, all any modifications of within spirit of the present utility model and principle, being made, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (7)
1. a base station equipment is characterized in that, this base station equipment comprises antenna oscillator and transceiver channel TRX-L, and each antenna oscillator connects a transceiver channel TRX-L, and each transceiver channel TRX-L connects an antenna oscillator;
Each transceiver channel TRX-L handles the baseband signal that baseband signal processing unit BBU sends, and the signal after handling is issued the antenna oscillator that links to each other with this transceiver channel TRX-L.
2. base station equipment according to claim 1, it is characterized in that, antenna oscillator is positioned at antenna-reflected plate one side, and transceiver channel TRX-L is positioned at antenna-reflected plate opposite side, and antenna oscillator and the transceiver channel TRX-L joint by antenna-reflected plate both sides links to each other or is connected by cable.
3. base station equipment according to claim 2 is characterized in that,
Described transceiver channel TRX-L is made up of filter, circulator, power amplifier and emission element Tx and receiving-member Rx;
After signal was handled by emission element Tx during downlink, the ingoing power amplifier amplified, and the signal after the amplification is radiate by antenna oscillator after by circulator and filter;
During up reception, the signal that receives from antenna oscillator enters amplifier via circulator and amplifies by behind the filter filtering, and the signal after the amplification is handled by receiving-member Rx.
4. device according to claim 3 is characterized in that,
Be provided with among emission element Tx and the receiving-member Rx and be used to carry out intermediate-freuqncy signal module of handling and the module that is used to carry out the radiofrequency signal processing.
5. device according to claim 4 is characterized in that,
Describedly be used to carry out the power-handling capability of the module that radiofrequency signal handles less than predetermined value.
6. device according to claim 1 is characterized in that,
Each transceiver channel TRX-L adopts separately amplitude weights and phase place weights to carry out signal processing respectively.
7. device according to claim 1 is characterized in that, this device comprises digital co-shunt module, is used for one road signal is divided into more than the two-way, perhaps the signal more than the two-way is combined into one the tunnel;
Each transceiver channel TRX-L links to each other with digital co-shunt module, issue baseband signal processing unit BBU after the signal that numeral co-shunt module is sent each transceiver channel TRX-L is combined into one the tunnel, will give each transceiver channel TRX-L from the baseband signal of baseband signal processing unit BBU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020001919XU CN201594821U (en) | 2010-01-07 | 2010-01-07 | Base station device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020001919XU CN201594821U (en) | 2010-01-07 | 2010-01-07 | Base station device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201594821U true CN201594821U (en) | 2010-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020001919XU Expired - Lifetime CN201594821U (en) | 2010-01-07 | 2010-01-07 | Base station device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103874076A (en) * | 2014-03-26 | 2014-06-18 | 华为技术有限公司 | Base station |
| CN104936281A (en) * | 2015-06-12 | 2015-09-23 | 昭文科技（北京）有限公司 | GSM (Global System for Mobile Communications) base station, communication system and data transmission method |
| WO2018130097A1 (en) * | 2017-01-11 | 2018-07-19 | 上海大唐移动通信设备有限公司 | Antenna structure and shaping method applied to the antenna structure |
| US10038246B2 (en) | 2014-03-26 | 2018-07-31 | Huawei Technologies Co., Ltd | Base station |
| WO2022067820A1 (en) * | 2020-09-30 | 2022-04-07 | 华为技术有限公司 | Antenna control apparatus, radio remote unit and communication system |
-
2010
- 2010-01-07 CN CN201020001919XU patent/CN201594821U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103874076A (en) * | 2014-03-26 | 2014-06-18 | 华为技术有限公司 | Base station |
| US10038246B2 (en) | 2014-03-26 | 2018-07-31 | Huawei Technologies Co., Ltd | Base station |
| US10498039B2 (en) | 2014-03-26 | 2019-12-03 | Huawei Technologies Co., Ltd. | Base station |
| US11258179B2 (en) | 2014-03-26 | 2022-02-22 | Huawei Technologies Co., Ltd. | Base station |
| CN104936281A (en) * | 2015-06-12 | 2015-09-23 | 昭文科技（北京）有限公司 | GSM (Global System for Mobile Communications) base station, communication system and data transmission method |
| CN104936281B (en) * | 2015-06-12 | 2018-10-09 | 昭文科技（北京）有限公司 | The base stations GSM, communication system and data transmission method |
| WO2018130097A1 (en) * | 2017-01-11 | 2018-07-19 | 上海大唐移动通信设备有限公司 | Antenna structure and shaping method applied to the antenna structure |
| WO2022067820A1 (en) * | 2020-09-30 | 2022-04-07 | 华为技术有限公司 | Antenna control apparatus, radio remote unit and communication system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100929 |