CN101197605B - System for implementing four-antenna diversity reception, data reception module and method - Google Patents
System for implementing four-antenna diversity reception, data reception module and method Download PDFInfo
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- CN101197605B CN101197605B CN2006101622229A CN200610162222A CN101197605B CN 101197605 B CN101197605 B CN 101197605B CN 2006101622229 A CN2006101622229 A CN 2006101622229A CN 200610162222 A CN200610162222 A CN 200610162222A CN 101197605 B CN101197605 B CN 101197605B
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Abstract
The invention discloses a diversity reception system of 4 antennas, which comprises a prior base station RF module and a data receiving module, the traditional base station RF module is used to emit a user data sent by a base band unit and to receive the user data through 2 antennas, the received user data is processed to be emitted to the base band unit; the data receiving module is used to receive the user data through 2 antennas, and processes the received user data which is then emitted to the base band unit. Meanwhile, the invention discloses the data receiving module and a diversity reception method of 4 antennas. By using the diversity reception system of 4 antennas, the data receiving module and the method of the invention, cost for achieving the diversity reception system of 4 antennas can be decreased, system performance can be improved.
Description
Technical field
The present invention relates to wireless communication technology, particularly realize system, data reception module and the method for 4 antenna diversity receptions.
Background technology
In moving communicating field, operator adopts 4 antenna diversity receptions to replace 2 traditional antenna diversity receptions usually, to enlarge up coverage, obtains higher diversity gain.Yet 4 antenna diversity receptions only are used under the minority scene, as the wide covering scene in rural area, mountain area, for the intensive city covering scene in base station, only need to use 2 traditional antenna diversity receptions basically.Therefore how under the condition that does not increase by 2 antenna diversity reception solution costs, realizing 4 antenna diversity receptions, is the difficult problem that the equipment supplier need solve.This difficult problem seems particularly outstanding in remote radio module (RRU, Remote Radiofrequency Unit) scheme.
In order to support 4 antenna diversity receptions, there are two kinds of solutions in the prior art, a kind of for a kind of base station radio frequency module that can support 4 antenna diversity receptions is provided; Another kind of for directly using two 2 traditional antenna diversity reception base station radio frequency module to realize 4 antenna diversity receptions.
Fig. 1 supports the structure chart of the base station radio frequency module of 4 antenna diversity receptions for prior art.This base station radio frequency module is made up of a transmission channel and 4 receive paths.Transmission channel is made up of transmitter, emission filter and corresponding antenna; Each receive path is made up of with receiving filter that links to each other and corresponding antenna receiver.Wherein, transmission channel and the shared antenna of receive path.
Tradition 2 antenna diversity reception base station radio frequency module are made of the part of its structure shown in Fig. 1 frame of broken lines a transmission channel and two receive paths.As seen, with respect to traditional 2 antenna diversity reception base station radio frequency module, 4 antenna diversity reception base station radio frequency module have had more two complete receive paths.
For convenience of description, below traditional 2 antenna diversity reception base station radio frequency module are abbreviated as: the traditional base station radio-frequency module.
Adopt 4 antenna diversity reception base station radio frequency module shown in Figure 1 to solve the application scenarios of two antenna diversities, not only can bring the significant wastage of overall solution cost, and cause the remarkable increase of base station volume, weight, and then reduce the core competitiveness of product, particularly for the RRU application scenarios.
If 4 antenna diversity reception base station radio frequency module shown in Figure 1 only are applied to the scene of 4 antenna diversity receptions, then this base station radio frequency module since can not with traditional base station radio-frequency module sharing module and design, therefore delivering amount is little, causes R﹠D costs to increase in interior product total cost.
Fig. 2 realizes the system construction drawing of 4 antenna diversity receptions for prior art adopts two traditional base station radio-frequency modules.This system is made up of traditional base station radio-frequency module 0 and 1, each traditional base station radio-frequency module comprises a transmission channel and two receive paths, transmission channel is formed by transmitter, emission filter and with the antenna of answering, and each receive path is made up of antenna, receiving filter and the receiver of correspondence.When this system applies during to the scene of 4 antenna diversity receptions, the existence of the transmission channel in one of them base station radio frequency module is nugatory, and transmission channel has occupied more than 60% of total cost in the cost of base station radio frequency module, and therefore the cost of this 4 antenna diversity reception implementations is high.The volume and weight of system is too big, makes whole solution lack competitiveness, particularly for the RRU application scenarios.
In a word, all there is the cost height in two kind of 4 antenna diversity reception implementation of the prior art, lacks the problem of product competitiveness.
Summary of the invention
The embodiment of the invention provides a kind of system that realizes 4 antenna diversity receptions, reduces system bulk, weight and realizes cost.
Another embodiment of the present invention provides a kind of method that realizes 4 antenna diversity receptions, reduces system bulk, weight and realizes cost.
A kind of system that realizes 4 antenna diversity receptions, this system comprises: traditional base station radio-frequency module and data reception module,
Described traditional base station radio-frequency module comprises a transmission channel and two receive paths, the shared antenna of transmission channel and one of them receive path, corresponding another root antenna of another receive path, the antenna of transmission channel correspondence is used for the user data that the transmitting baseband unit sends, by two antenna receiving subscriber datas, and will send to described Base Band Unit after the user data processing that receive;
Described data reception module is used for by two antenna receiving subscriber datas, and with after the user data processing that receives, sends to described Base Band Unit.
A kind of method that realizes 4 antenna diversity receptions, this method comprises:
A, two antenna receiving subscriber datas by traditional base station radio-frequency module correspondence, to sending to Base Band Unit after the user data processing that receives, wherein, described traditional base station radio-frequency module comprises a transmission channel and two receive paths, the shared antenna of transmission channel and one of them receive path, corresponding another root antenna of another receive path; By two antenna receiving subscriber datas of data reception module correspondence, to sending to Base Band Unit after the user data processing that receives.
By above technical scheme as seen, the system of realization 4 antenna diversity receptions that the embodiment of the invention provides is made of traditional base station radio-frequency module and data reception module two parts, this system can directly utilize the traditional base station radio-frequency module, need in the radio-frequency module of traditional base station, not increase any new design, the independent data receiver module that is provided with two receive paths simultaneously realizes that not only cost is low, volume and weight are also very little, therefore utilize the system of realization 4 antenna diversity receptions that the embodiment of the invention provides, data reception module and method can reduce the cost of whole system, greatly reduce the volume and weight of system, and then improve the competitiveness of corresponding product.
Description of drawings
Fig. 1 supports the structure chart of the base station radio frequency module of 4 antenna diversity receptions for prior art;
Fig. 2 realizes the system construction drawing of 4 antenna diversity receptions for prior art adopts two traditional base station radio-frequency modules;
Fig. 3 is first kind of structure chart of realizing the system of 4 antenna diversity receptions of the embodiment of the invention;
Fig. 4 backs up the structure chart behind the baseband interface for system shown in Figure 3 increases;
Fig. 5 is second kind of structure chart of realizing the system of 4 antenna diversity receptions of the embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme and beneficial effect clearer,, the present invention is done detailed description further below in conjunction with embodiment and accompanying drawing.
The system and method for realization 4 antenna diversity receptions that the embodiment of the invention provides is arranged on one separately independently in the data reception module with two receive paths, is used by this data reception module and traditional base station radio-frequency module and realizes 4 antenna diversity receptions.
The system of realization 4 antenna diversity receptions that the embodiment of the invention provides comprises: traditional base station radio-frequency module and data reception module, wherein, the traditional base station radio-frequency module is used for the user data that the transmitting baseband unit sends, by two antenna receiving subscriber datas, and will send to described Base Band Unit after the user data processing that receive; Data reception module is used for by two antenna receiving subscriber datas, and with after the user data processing that receives, sends to described Base Band Unit.
Fig. 3 is first kind of structure chart of realizing the system of 4 antenna diversity receptions of the embodiment of the invention.This system comprises: traditional base station radio-frequency module and data reception module.
Wherein, the traditional base station radio-frequency module comprises: transmission channel, receive path 0 and receive path 1, baseband interface and first interface; Data reception module comprises: receive path 2, receive path 3 and second interface, carry out the transmission of user data and system maintenance information by interconnect cable between first interface and second interface.
Transmission channel is made up of transmitter, emission filter and corresponding antenna 0, transmitter is modulated to radiofrequency signal by the user data that baseband interface transmits by baseband signal with Base Band Unit, and after radiofrequency signal carried out power amplification, output to emission filter, emission filter is launched by antenna 0 after the radiofrequency signal that receives is carried out Filtering Processing.
Each receive path is made up of a receiver, receiving filter and respective antenna.Receive path 0 is made up of receiver 0, receiving filter 0 and antenna 0; Receive path 1 is made up of receiver 1, receiving filter 1 and antenna 1; Receive path 2 is made up of receiver 2, receiving filter 2 and antenna 2; Receive path 3 is made up of receiver 3, receiving filter 3 and antenna 3.
Each receiving filter is used for the antenna received RF signal from correspondence, and the radiofrequency signal that receives is carried out Filtering Processing, the outer interference signal of filtering band, and the radiofrequency signal after will handling sends to corresponding receiver.
Receiver 0 and 1, the radiofrequency signal that is used for receiving is demodulated into baseband signal, and the baseband signal after the demodulation is sent to Base Band Unit by baseband interface.
Receiver 2 and 3, the radiofrequency signal that is used for receiving is demodulated into baseband signal, and the baseband signal after the demodulation is sent to first interface of traditional base station radio-frequency module by second interface, sends to Base Band Unit by baseband interface again.
In order to improve the reliability of system, can also in the data reception module of system shown in Figure 3, further increase a backup baseband interface, this backup baseband interface links to each other with Base Band Unit, as shown in Figure 4.When the baseband interface that comprises when the conventional radio frequency module breaks down, data reception module and Base Band Unit carry out information interaction by the backup baseband interface, and the traditional base station radio-frequency module carries out information interaction by second interface of first interface and described data reception module.
In this case, data reception module receives the user data that Base Band Unit sends by the backup baseband interface, and the user data that receives is sent to the traditional base station radio-frequency module, is sent by transmission channel by the traditional base station radio-frequency module;
Two receiving filters in the radio-frequency module of traditional base station from the antenna received RF signal of correspondence, carry out Filtering Processing with the radiofrequency signal that receives respectively, the outer interference signal of filtering band, and the radiofrequency signal after will handling sends to corresponding receiver.
Receiver 0 and 1, the radiofrequency signal that is used for receiving is demodulated into baseband signal, and the baseband signal after the demodulation is sent to second interface of data reception module by first interface, sends to Base Band Unit by the backup baseband interface again.
Receiver 2 and 3, the radiofrequency signal that is used for receiving is demodulated into baseband signal, and the baseband signal after the demodulation is sent to Base Band Unit by the backup baseband interface.
Fig. 5 is second kind of structure chart of realizing the system of 4 antenna diversity receptions of the embodiment of the invention.This system comprises: traditional base station radio-frequency module and data reception module.
Wherein, the traditional base station radio-frequency module comprises: transmission channel, receive path 0 and a receive path 1 and first baseband interface; Data reception module comprises: receive path 2, receive path 3 and second baseband interface.
Transmission channel is made up of transmitter, emission filter and corresponding antenna 0, transmitter is modulated to radiofrequency signal by the user data that baseband interface transmits by baseband signal with Base Band Unit, and after radiofrequency signal carried out power amplification, output to emission filter, emission filter is launched by antenna 0 after the radiofrequency signal that receives is carried out Filtering Processing.
Each receive path is made up of a receiver, receiving filter and respective antenna.Receive path 0 is made up of receiver 0, receiving filter 0 and antenna 0; Receive path 1 is made up of receiver 1, receiving filter 1 and antenna 1; Receive path 2 is made up of receiver 2, receiving filter 2 and antenna 2; Receive path 3 is made up of receiver 3, receiving filter 3 and antenna 3.
Each receiving filter is used for the antenna received RF signal from correspondence, and the radiofrequency signal that receives is carried out Filtering Processing, the outer interference signal of filtering band, and the radiofrequency signal after will handling sends to corresponding receiver.
Receiver 0 and 1, the radiofrequency signal that is used for receiving is demodulated into baseband signal, and the baseband signal after the demodulation is sent to Base Band Unit by first baseband interface.
Receiver 2 and 3, the radiofrequency signal that is used for receiving is demodulated into baseband signal, and the baseband signal after the demodulation is sent to Base Band Unit by second baseband interface.
By Fig. 3, Fig. 4 and realization 4 antenna diversity reception systems shown in Figure 5 as seen, the realization 4 antenna diversity reception systems that the embodiment of the invention provides comprise the independent data receiver module of two receive paths by setting, and are used by this data reception module and traditional base station radio-frequency module and realize 4 antenna diversity receptions.The realization 4 antenna diversity reception systems that the embodiment of the invention provides can directly utilize the traditional base station radio-frequency module, not needing increases any new design to the traditional base station radio-frequency module, and data reception module mainly is made of two receive paths, it is all very little that it is embodied as basis, volume and weight, therefore the realization 4 antenna diversity reception systems that utilize the embodiment of the invention to provide can be so that the cost of whole system reduces, greatly reduce the volume and weight of system, and then improve the competitiveness of corresponding product.
When particularly system shown in Figure 3 being applied in the RRU application scenarios because this system comprises two modules, but with Base Band Unit between only need a baseband interface to link to each other, so this system not only cost is low, volume weight is little, and easy for installation.
The embodiment of the invention provides a kind of method that realizes 4 antenna diversity receptions simultaneously, and this method comprises:
A, two antenna receiving subscriber datas by traditional base station radio-frequency module correspondence send to Base Band Unit after the user data that receives handled; By two antenna receiving subscriber datas of data reception module correspondence, to sending to Base Band Unit after the user data processing that receives.
The described two antenna receiving subscriber datas of steps A by the data reception module correspondence, send to after the user data that receives handled Base Band Unit method can for: by two antenna receiving subscriber datas of data reception module correspondence, after the user data processing that receives, at first send to continuous traditional base station radio-frequency module, by described traditional base station radio-frequency module the user data that receives is sent to described Base Band Unit again.
Before steps A, also comprise: the step of the user data that radio-frequency module transmitting baseband unit, described traditional base station sends.
When the traditional base station radio-frequency module breaks down can't carry out information interaction with Base Band Unit the time, before the user data that radio-frequency module transmitting baseband unit, traditional base station sends, further comprise:
Data reception module receives the user data that Base Band Unit sends, and the user data that receives is sent to the traditional base station radio-frequency module.
In this case, the described two antenna receiving subscriber datas of steps A by traditional base station radio-frequency module correspondence, to the method that sends to Base Band Unit after the user data processing that receives be: by two antenna receiving subscriber datas of traditional base station radio-frequency module correspondence, after the user data processing that receives, at first send to data reception module, send to described Base Band Unit by data reception module again.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. system that realizes 4 antenna diversity receptions is characterized in that this system comprises: traditional base station radio-frequency module, data reception module,
Described traditional base station radio-frequency module comprises a transmission channel and two receive paths, the shared antenna of transmission channel and one of them receive path, corresponding another root antenna of another receive path, the antenna of transmission channel correspondence is used for the user data that the transmitting baseband unit sends, by two antenna receiving subscriber datas, and will send to described Base Band Unit after the user data processing that receive;
Described data reception module is used for by two antenna receiving subscriber datas, and with after the user data processing that receives, sends to described Base Band Unit.
2. the system as claimed in claim 1 is characterized in that, described traditional base station radio-frequency module comprises first baseband interface, carries out information interaction by described first baseband interface and described Base Band Unit;
Described data reception module comprises second baseband interface and two receive paths, carries out information interaction by described second baseband interface and described Base Band Unit;
Each receive path that described data reception module comprises, be used for from the respective antenna received RF signal, the radiofrequency signal that receives is carried out Filtering Processing, the outer interference signal of filtering band, after radiofrequency signal after will handling again is demodulated into baseband signal, send to described Base Band Unit by described second baseband interface.
3. system as claimed in claim 2 is characterized in that, each receive path that described data reception module comprises is made up of with receiving filter that links to each other and corresponding antenna receiver,
Described receiving filter is used for from the respective antenna received RF signal, and the radiofrequency signal that receives is carried out Filtering Processing, the outer interference signal of filtering band, and the radiofrequency signal after will handling sends to described receiver;
Described receiver, the radiofrequency signal that is used for receiving is demodulated into baseband signal, and the baseband signal after the demodulation is sent to described Base Band Unit by described second baseband interface.
4. the system as claimed in claim 1 is characterized in that, described traditional base station radio-frequency module comprises the baseband interface and first interface, and described traditional base station radio-frequency module carries out information interaction by described baseband interface and described Base Band Unit; Carry out information interaction by described first interface and described data reception module;
Described data reception module comprises second interface and two receive paths, and described second interface links to each other with described first interface,
Each receive path that described data reception module comprises, be used for from the respective antenna received RF signal, the radiofrequency signal that receives is carried out Filtering Processing, the outer interference signal of filtering band, after radiofrequency signal after will handling again is demodulated into baseband signal, be sent to described first interface by described second interface;
Described traditional base station radio-frequency module will send to described Base Band Unit by described baseband interface from the baseband signal that described first interface receives.
5. system as claimed in claim 4 is characterized in that, described each receive path is made up of with receiving filter that links to each other and corresponding antenna receiver,
Described receiving filter is used for from the respective antenna received RF signal, and the radiofrequency signal that receives is carried out Filtering Processing, the outer interference signal of filtering band, and the radiofrequency signal after will handling sends to described receiver;
Described receiver, the radiofrequency signal that is used for receiving is demodulated into baseband signal, and the baseband signal after the demodulation is sent to described first interface by described second interface.
6. system as claimed in claim 4, it is characterized in that, described data reception module further comprises the backup baseband interface, when described baseband interface breaks down, described data reception module receives the user data that described Base Band Unit sends by this backup baseband interface, and the user data that receives is sent to described traditional base station radio-frequency module;
User data after described data reception module further will receive and handle by described backup baseband interface sends to described Base Band Unit;
User data after described traditional base station radio-frequency module further will receive and handle by described first interface is sent to second interface of described data reception module, sends to described Base Band Unit by described backup baseband interface again.
7. as each described system of claim 4 to 6, it is characterized in that described first interface links to each other by interconnect cable with described second interface and carries out information interaction.
8. method that realizes 4 antenna diversity receptions is characterized in that this method comprises:
A, two antenna receiving subscriber datas by traditional base station radio-frequency module correspondence, to sending to Base Band Unit after the user data processing that receives, wherein, described traditional base station radio-frequency module comprises a transmission channel and two receive paths, the shared antenna of transmission channel and one of them receive path, corresponding another root antenna of another receive path; By two antenna receiving subscriber datas of data reception module correspondence, to sending to Base Band Unit after the user data processing that receives.
9. method as claimed in claim 8 is characterized in that, the described two antenna receiving subscriber datas by the data reception module correspondence of steps A to the method that sends to Base Band Unit after the user data processing that receives are:
Two antenna receiving subscriber datas by the data reception module correspondence, after the user data processing that receives, at first send to continuous traditional base station radio-frequency module, by described traditional base station radio-frequency module the user data that receives is sent to described Base Band Unit again.
10. method as claimed in claim 8 or 9 is characterized in that, also comprises step before the described steps A: the user data that radio-frequency module transmitting baseband unit, described traditional base station sends.
11. method as claimed in claim 10 is characterized in that, when described traditional base station radio-frequency module breaks down can't carry out information interaction with Base Band Unit the time, before the user data that radio-frequency module transmitting baseband unit, described traditional base station sends, further comprises:
Described data reception module receives the user data that Base Band Unit sends, and the user data that receives is sent to described traditional base station radio-frequency module;
The described two antenna receiving subscriber datas of steps A by traditional base station radio-frequency module correspondence, to the method that sends to Base Band Unit after the user data processing that receives be: by two antenna receiving subscriber datas of traditional base station radio-frequency module correspondence, after the user data processing that receives, at first send to data reception module, send to described Base Band Unit by data reception module again.
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| CN105897477A (en) * | 2016-04-12 | 2016-08-24 | 上海斐讯数据通信技术有限公司 | Method and system for realizing multi-user multiple-input multiple-output (MU-MIMO) |
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| CN2759063Y (en) * | 2004-12-30 | 2006-02-15 | 芯通科技（成都）有限公司 | Remote-simulated RF transceiver module for wireless substation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2759063Y (en) * | 2004-12-30 | 2006-02-15 | 芯通科技（成都）有限公司 | Remote-simulated RF transceiver module for wireless substation |
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