CN101047420A - Base station system and system and method for implementing downlink/uplink data branch/merge - Google Patents

Base station system and system and method for implementing downlink/uplink data branch/merge Download PDF

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Publication number
CN101047420A
CN101047420A CNA200610086537XA CN200610086537A CN101047420A CN 101047420 A CN101047420 A CN 101047420A CN A200610086537X A CNA200610086537X A CN A200610086537XA CN 200610086537 A CN200610086537 A CN 200610086537A CN 101047420 A CN101047420 A CN 101047420A
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China
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baseband signal
district
sub
unit
data
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沈建强
余卫东
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CNA200610086537XA priority Critical patent/CN101047420A/en
Priority to PCT/CN2007/070106 priority patent/WO2008000174A1/en
Publication of CN101047420A publication Critical patent/CN101047420A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A method for branching/combining downlink data in base station system includes outputting one-cell downlink base band signal generated by base band processing unit to radio frequency subsystem corresponding to all antennas of covered cell, converting downlink base band signal received by each radio frequency subsystem independently and separately to be downlink radio frequency signal, transmitting converted signal to antenna connected with said radio frequency subsystem after converted signal is power-amplified and emitting converted signal out by said antenna. The device used for realizing said method is also disclosed.

Description

Base station system and realize down/upstream data branch/the close system and method on road
Technical field
The present invention relates to the radiofrequency signal transmit-receive technology, be meant a kind of base station system especially and realize that in the base station downlink data shunt, upstream data close the system and method on road.
Background technology
Along with the development of radio communication service, wireless communication system is also higher to the requirement of the requirement of the network coverage and network quality, and it is complicated more that the network planning also becomes.In addition, in wireless communication system, the size of transmitting power can influence network coverage and service signal quality.The raising of transmitting power can increase the effective coverage range of sub-district to a certain extent, can also improve the service signal quality to a certain extent.
When the network planning, according to the difference of landform, environment, the method for the network planning is also different.Area at elongate in shape such as highway, railway, subways, the base station is adopted two directional antennas usually, these two directional antennas are respectively aimed at a direction, handle two zones that described two directional antennas are covered respectively the base station as a sub-district, in described two zones, use identical frequency, the user does not need when mobile to switch in described two zones, can save base-band resource.
Can provide as the directional antenna of two different directions of above-mentioned use cover a sub-district base station system composition as shown in Figure 1, mainly constitute by following unit, comprise: baseband processing unit 101, radiofrequency signal transceiver (TRX) 102, radio frequency (RF) unit 103, antenna 1041,1042.Wherein, antenna 1041 and antenna 1042 are the directional antennas that cover two different directions of a sub-district, are used for the upward signal to self institute's coverage cell transmitting downstream signal and reception self institute's coverage cell.In system shown in Figure 1, TRX unit 102, the Radio Frequency Subsystem that RF unit 103 constitutes at a sub-district.Described Radio Frequency Subsystem is one road downlink radio-frequency signal with one road downgoing baseband signal transformation of baseband processing unit output, and after described one road downlink radio-frequency signal is shunted to the two-way downlink radio-frequency signal, passes to two antennas that are connected with self respectively.Accordingly, described Radio Frequency Subsystem will be passed to baseband processing unit respectively after will being transformed into the uplink baseband signal respectively from the up radiofrequency signal that described two antennas receive respectively.Introduce the function of each unit in the base station system shown in Figure 1 and the signal flow between each unit below more in detail.
In base station system shown in Figure 1, baseband processing unit 101 comprises coded modulation unit 101D and demodulation decoding unit 101U.The downgoing baseband signal that coded modulation unit 101D produces each sub-district promptly carries out passing to TRX unit 102 after coded modulation obtains the downgoing baseband signal to the data of each sub-district that will send.Decoding demodulating unit 101U carries out demodulation coding to the uplink baseband signal of each sub-district of receiving from TRX unit 102, obtains the data of each sub-district.After the downgoing baseband signal transformation that TRX unit 102 will receive from coded modulation unit 101D is downlink radio-frequency signal, pass to RF unit 103, perhaps, will be transformed to the uplink baseband signal from the up radiofrequency signal that RF unit 103 receives after, pass to demodulation coding unit 101U.The downlink radio-frequency signal that RF unit 103 will receive from TRX unit 102 carries out being divided into two-way after the power amplification, delivering to antenna 1041 and 1042 respectively launches, perhaps, will pass to TRX unit 102 respectively from the up radiofrequency signal that antenna 1041 or 1042 receives.Wherein, the downlink radio-frequency signal after RF unit 103 is to use power splitter with power amplification is divided into the two-way downlink radio-frequency signal; Accordingly, when RF unit 103 receives the up radiofrequency signal of a sub-district respectively by two antennas 1041 and 1042, received up radiofrequency signal is passed to TRX unit 102 respectively by power splitter.
Introduce the principle of power splitter below in conjunction with Fig. 2.Shown in the 2-1 of Fig. 2, downlink radio-frequency signal 20 is divided into two-way downlink radio- frequency signal 201 and 202 by power splitter, and at this moment, each road downlink radio- frequency signal 201 and 202 watt level are respectively half of power of downlink radio-frequency signal 20.Shown in the 2-2 of Fig. 2, power splitter can also use as duplexer, and promptly the up radiofrequency signal 301 of two-way and 302 passes to the TRX unit respectively by power splitter.
In sum, in the prior art, use power splitter to realize that there is following shortcoming in radiofrequency signal base station system along separate routes:
(1) power that is divided into each the road downlink radio-frequency signal behind the two-way by power splitter only for original along separate routes before half of one road downlink radio-frequency signal power, therefore, the antenna footprint of each direction reduces.If enlarge the antenna footprint of each direction, then need to use the power of the power amplifier of bigger multiple road downlink radio-frequency signal before amplifying along separate routes, the power of each the road downlink radio-frequency signal after the shunt could satisfy certain coverage requirement like this.And, when downlink radio-frequency signal being divided into two-way,, therefore, not high to the utilance of power amplifier because power splitter device itself can cause the certain power loss by power splitter.
(2) corresponding, when receiving up radiofrequency signal by power splitter, owing to the unmatched reason of power splitter impedance, the up radiofrequency signal of part is reflected back.Shown in the 2-2 of Fig. 2, during by power splitter received signal 301, signal 3011 and 3012 is respectively the part signal that signal 301 goes back by two antenna-reflected owing to the unmatched reason of power splitter impedance, if the watt level of each the road signal 3011,3012 that is launched back is 25% of former received signal 301 power, then signal 301 only is 50% of a former power by the watt level of the signal 30 behind the power splitter.Therefore, up radiofrequency signal quality can descend, thereby also can produce certain influence to the demodulation of uplink baseband signal.And, when receiving up radiofrequency signal, have certain interference between the up radiofrequency signal on two antennas, thereby the interference free performance of base station system is bad by power splitter.
Summary of the invention
In view of this, first main purpose of the present invention is to provide a kind of downlink data system along separate routes that realizes in the base station, improves the power amplifier utilance and can carry out system configuration flexibly.
Second main purpose of the present invention is to provide a kind of downlink data method along separate routes that realizes in the base station, improves the power amplifier utilance and can carry out system configuration flexibly.
The 3rd main purpose of the present invention is to provide a kind of and realizes that in the base station upstream data closes the system on road, reduces the loss of received signal power and can carry out system configuration flexibly.
The 4th main purpose of the present invention is to provide a kind of and realizes that in the base station upstream data closes the method on road, reduces the loss of received signal power and can carry out system configuration flexibly.
The 5th main purpose of the present invention is to provide a kind of base station system, improves the power amplifier utilance, reduces the loss of received signal power and can carry out system configuration flexibly.
In order to reach above-mentioned first purpose, the invention provides a kind of downlink data system along separate routes that realizes in the base station, this system comprises a baseband coding modulating unit and is used to cover at least two antennas of single subdistrict, with the Radio Frequency Subsystem of described antenna number same number; Wherein, each antenna of each sub-district links to each other with a Radio Frequency Subsystem respectively;
Described baseband coding modulating unit is used for downlink data to each sub-district to carry out respectively the downgoing baseband signal of each sub-district being passed to pairing all Radio Frequency Subsystems of all antennas that cover respective cell respectively after coded modulation obtains the downgoing baseband signal of respective cell;
It is downlink radio-frequency signal that described each Radio Frequency Subsystem is respectively applied for the downgoing baseband signal transformation that will be received, and described downlink radio-frequency signal is carried out passing to the antenna that is connected with self after the power amplification;
Described each antenna is used for launching resulting downlink radio-frequency signal to the sub-district that self covers.
Preferable, this system further comprises: the downgoing baseband interface unit; Described downgoing baseband interface unit is arranged between all Radio Frequency Subsystems and the described baseband coding modulating unit, be used to receive the downgoing baseband signal of each sub-district of baseband coding modulating unit output, and the downgoing baseband signal of each sub-district of being received is passed to pairing all Radio Frequency Subsystems of all antennas that cover respective cell respectively.
In order to reach above-mentioned second purpose, the invention provides a kind of downlink data method along separate routes that realizes in the base station, described base station comprises at least two antennas that cover single subdistrict, the respectively corresponding Radio Frequency Subsystem of each antenna of described each sub-district, and this method comprises:
A. the baseband coding modulating unit carries out the downgoing baseband signal that coded modulation obtains respective cell respectively to the downlink data of each sub-district;
B. the downgoing baseband signal of described each sub-district is passed to all Radio Frequency Subsystems of all antenna correspondences that cover respective cell respectively;
C. each Radio Frequency Subsystem is a downlink radio-frequency signal with received downgoing baseband signal transformation respectively, and described downlink radio-frequency signal is carried out passing to corresponding antenna after the power amplification, and antenna is transmitted to received downlink radio-frequency signal the sub-district that self covers.
In order to reach above-mentioned the 3rd purpose, the invention provides and a kind ofly realize that in the base station upstream data closes the system on road, this system comprises: a base band demodulating decoding unit, a uplink baseband interface unit is with the Radio Frequency Subsystem of described antenna number same number; Wherein, each antenna of each sub-district links to each other with a Radio Frequency Subsystem respectively; The uplink baseband interface unit links to each other with all Radio Frequency Subsystems respectively;
Described each antenna is used to receive the up radiofrequency signal that the sub-district sent that self covers, and passes to the Radio Frequency Subsystem that is connected with self;
After the up radiofrequency signal that described each Radio Frequency Subsystem is used for receiving from the antenna that is connected with self is transformed to the uplink baseband signal, pass to the uplink baseband interface unit;
Described uplink baseband interface unit is used for being combined into going on the way after the baseband signal of respective cell from the uplink baseband signal that all Radio Frequency Subsystems that all antennas of each sub-district connect receive, and passes to the base band demodulating decoding unit;
Described base band demodulating decoding unit is used for each received uplink baseband signal is carried out the upstream data that demodulation coding obtains respective cell.
In order to reach above-mentioned the 4th purpose, the invention provides a kind of method of closing the road at base station realization upstream data, described base station comprises at least two antennas that cover single subdistrict, the respectively corresponding Radio Frequency Subsystem of each antenna of described each sub-district, and this method comprises:
X. each antenna receives the up radiofrequency signal that the sub-district sent that self covers respectively, passes to the Radio Frequency Subsystem corresponding with self; Each Radio Frequency Subsystem will be transformed to the uplink baseband signal from the up radiofrequency signal that the antenna corresponding with self receives respectively;
Y. the uplink baseband signal of each sub-district is combined into the going on the way after the baseband signal of respective cell, passes to the base band demodulating decoding unit;
Z. the base band demodulating decoding unit carries out the upstream data that demodulation coding obtains respective cell respectively to the uplink baseband signal of each received sub-district.
In order to reach above-mentioned the 5th purpose, the invention provides a kind of base station system, this system comprises a baseband processing unit and is used to cover at least two antennas of single subdistrict, it is characterized in that, this system also comprises: the baseband interface unit, with the Radio Frequency Subsystem of described antenna number same number;
Wherein, the antenna of each sub-district links to each other with a Radio Frequency Subsystem respectively; The baseband interface unit is arranged between baseband processing unit and the Radio Frequency Subsystem;
Described baseband processing unit is used for downlink data to each sub-district to carry out respectively after coded modulation obtains the downgoing baseband signal of respective cell, pass to the baseband interface unit, perhaps, be used for each uplink baseband signal received from the baseband interface unit carried out the upstream data that demodulation coding obtains respective cell;
Described baseband interface unit is used to receive the downgoing baseband signal of each sub-district of baseband processing unit output, and the downgoing baseband signal of each sub-district of being received passed to pairing all Radio Frequency Subsystems of all antennas that cover respective cell respectively, perhaps, be used for being combined into going on the way after the baseband signal of respective cell, pass to baseband processing unit from the uplink baseband signal that all Radio Frequency Subsystems that all antennas of each sub-district connect receive;
It is downlink radio-frequency signal that described each Radio Frequency Subsystem is respectively applied for the downgoing baseband signal transformation that will receive from the baseband interface unit, described downlink radio-frequency signal is carried out passing to the antenna that is connected with self after the power amplification, perhaps, after the up radiofrequency signal that is used for receiving from the antenna that is connected with self is transformed to the uplink baseband signal, pass to the baseband interface unit;
Described each antenna is used for launching resulting downlink radio-frequency signal to the sub-district that self covers, and perhaps, is used to receive the up radiofrequency signal that the sub-district sent that self covers, and passes to the Radio Frequency Subsystem that is connected with self.
According to downlink data branch system provided by the invention and method, in the time of need using the directional antenna of a plurality of different directions to cover described sub-district at a sub-district, distribute and the identical independently Radio Frequency Subsystem of antenna number that covers this sub-district, the downgoing baseband signal passed to described independently Radio Frequency Subsystem respectively and by the emission of the antenna of correspondence, thereby finished the shunt of downlink data.The present invention's difference is finished downlink data along separate routes system by power splitter at radio frequency with described in the prior art, but has finished the shunt of downlink data in base band, thereby has avoided owing to carry out the power loss that shunt brings at radio frequency.Have under the situation of power amplifier of equal-wattage multiplication factor using with prior art, the present invention also improves a scope that antenna covered, and has further improved the utilance of each power amplifier.And, the coded modulation of each sub-district in the baseband processing unit partly with between the downgoing baseband interface unit is connected entirely, and the corresponding relation between sub-district and the Radio Frequency Subsystem is set in the downgoing baseband interface unit, thereby can carries out plot planning and corresponding system configuration neatly.
Accordingly, close the road system and method according to upstream data provided by the invention, need use the directional antenna of a plurality of different directions to cover described sub-district and the antenna that give to cover described sub-district respectively correspondingly during the distributing independent Radio Frequency Subsystem at a sub-district, the up radiofrequency signal that each antenna received is passed to baseband processing unit respectively by described independently Radio Frequency Subsystem respectively, thereby the loss of signal that every circuit-switched data can not exist reasons such as impedance does not match to cause, and can there be interference between the up radiofrequency signal in each road.And, after each up radiofrequency signal that independently Radio Frequency Subsystem will be received separately is transformed to the uplink baseband signal, in base band the uplink baseband signal of a sub-district is closed the road, thereby, the upstream data of a sub-district can be handled easily in the baseband processing unit.And, the demodulation coding of each sub-district part is connected entirely with the uplink baseband interface unit in the baseband processing unit, and the corresponding relation between sub-district and the Radio Frequency Subsystem is set in the uplink baseband interface unit, thereby can carries out plot planning and corresponding system configuration neatly.
In addition, base station system provided by the invention can realize the shunt of closing road and downlink data of upstream data simultaneously, not only has the benefit of above two systems, but also has improved the performance of base station and the utilance of resource.
Description of drawings
Figure 1 shows that the composition frame chart of base station system in the prior art;
Figure 2 shows that the principle schematic of power splitter in the prior art;
Figure 3 shows that base station system composition frame chart among the present invention;
Figure 4 shows that and in base station system, realize downlink data structured flowchart along separate routes in one embodiment of the invention;
Figure 5 shows that the structured flowchart that in base station system, can handle the downlink data of all sub-districts among the present invention;
Figure 6 shows that and in base station system, realize downlink data structured flowchart along separate routes in another embodiment of the present invention;
Figure 7 shows that the flow chart of realizing the downlink data shunt among the present invention in the base station;
Figure 8 shows that and realize in base station system among the present invention that upstream data closes the structured flowchart on road;
Figure 9 shows that among the present invention in base station system by closing the structured flowchart of road control and treatment upstream data;
Figure 10 shows that the structured flowchart that in base station system, can handle the upstream data of all sub-districts among the present invention;
Figure 11 shows that the flow chart of realizing the upstream data shunt among the present invention in the base station;
Figure 12 shows that the structured flowchart that to handle the base station system of uplink and downlink data among the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, lift specific embodiment below, the present invention is further detailed explanation.
Use the directional antenna of two or more different directions to cover the base station of a sub-district at needs, the invention provides and in base station system, can realize downlink data system along separate routes, comprise: baseband processing unit, two or more antennas and a Radio Frequency Subsystem, wherein, antenna is connected one to one with Radio Frequency Subsystem.Realize that in described system downlink data general thought along separate routes is: the downgoing baseband signal of the sub-district that baseband processing unit produces outputs to the pairing Radio Frequency Subsystem of all antennas of this sub-district of described covering respectively, is become downlink radio-frequency signal and it is carried out passing to the antenna that is connected with self after the power amplification launch by independently that self is the received respectively downgoing baseband conversion of signals of each Radio Frequency Subsystem.Accordingly, the present invention also provides and can realize that in base station system upstream data closes the system on road, comprising: baseband processing unit, two or more antennas and a Radio Frequency Subsystem, wherein, antenna is connected one to one with Radio Frequency Subsystem.Realize that in described system the general thought that upstream data closes the road is: pass to each self-corresponding Radio Frequency Subsystem respectively after each antenna that covers a sub-district receives up radiofrequency signal, after each Radio Frequency Subsystem is transformed to the uplink baseband signal with received up radiofrequency signal, the uplink baseband signal of a sub-district of each Radio Frequency Subsystem output close the road be respective cell go baseband signal and pass to baseband processing unit and handle on the way.Wherein, Radio Frequency Subsystem of the present invention comprises a TRX unit and a RF unit.
Be example with a sub-district by the situation that two antennas cover below, further describe annexation between each unit and signal flow in the base station system.
Fig. 3 is the base station system that a sub-district is covered by two antennas, and as shown in Figure 3, described base station system comprises: baseband processing unit 101, baseband interface unit 105, Radio Frequency Subsystem 1 and Radio Frequency Subsystem 2, antenna 1041 and antenna 1042.Wherein, baseband processing unit 101 comprises coded modulation unit 101D and demodulation decoding unit 101U; Baseband interface unit 105 comprises downgoing baseband interface unit 105D and uplink baseband interface unit 105U; Radio Frequency Subsystem 1 comprises TRX unit 1021, RF unit 1031; Radio Frequency Subsystem 2 comprises TRX unit 1022, RF unit 1032. Radio Frequency Subsystem 1 and 2 is separate Radio Frequency Subsystems.For convenience, below the 1021 usefulness TRX 1 of the TRX unit in the Radio Frequency Subsystem 1 are represented that RF unit 1031 usefulness RF 1 represent that the antenna 1041 usefulness antennas 1 that are connected with Radio Frequency Subsystem 1 are accordingly represented; Each unit in the Radio Frequency Subsystem 2 represents with TRX 2, RF2 that respectively the antenna 1042 usefulness antennas 2 that are connected with Radio Frequency Subsystem 2 are accordingly represented.
In base station system shown in Figure 3, processing procedure to the downlink data of a sub-district is as described below: the downgoing baseband signal that coded modulation unit 101D produces each sub-district promptly carries out passing to downgoing baseband interface unit 105D after coded modulation obtains the downgoing baseband signal to the downlink data of each sub-district that will send.Downgoing baseband interface unit 105D is distributed to TRX 1 and TRX 2 with the downgoing baseband signal that described coded modulation unit 101D produces.TRX 1 passes to RF 1 after received downgoing baseband signal transformation is become downlink radio-frequency signal; After 1 pair of received downlink radio-frequency signal of RF carries out power amplification, pass to 1 emission of corresponding antenna.Similarly, TRX 2 passes to RF 2 after received downgoing baseband signal transformation is become downlink radio-frequency signal; After 2 pairs of received downlink radio-frequency signals of RF carry out power amplification, pass to antenna 2 emissions.By above process, in fact after base band is divided into two-way to the downgoing baseband signal of a sub-district, pass to respectively should the sub-district two Radio Frequency Subsystems independently, described two independently Radio Frequency Subsystem downgoing baseband signal transformation is become to pass to corresponding antenna after downlink radio-frequency signal and the power amplification respectively again, by described two antennas respectively to this sub-district transmitting downstream radiofrequency signal.
In base station system shown in Figure 3, as described below to the processing procedure of the upstream data of a sub-district: as after antenna 1 receives up radiofrequency signal, to pass to RF 1; RF 1 passes to TRX 1 with described up radiofrequency signal again.Similarly, the antenna 2 up radiofrequency signal that will receive is passed to RF 2; RF 2 passes to TRX 2 with described up radiofrequency signal again.TRX 1 and TRX 2 pass to uplink baseband interface unit 105U respectively after respectively received up radiofrequency signal being transformed into the uplink baseband signal.Because the two-way uplink baseband signal of TRX 1 and TRX 2 outputs is the signals that belong to a sub-district, uplink baseband interface unit 105U passes to demodulation coding unit 101U after received two-way uplink baseband signal is synthesized capable on the way baseband signal.Demodulation coding unit 101U separates to be in harmonious proportion to received uplink baseband signal and deciphers, and obtains the upstream data of respective cell.By above process, in fact base band will from two of the same sub-district of correspondence independently Radio Frequency Subsystem the two-way uplink baseband signal of resulting same sub-district is synthetic respectively goes on the way after the baseband signal, pass to the demodulation coding cell processing of baseband processing unit.
Below in conjunction with accompanying drawing, be presented in the processing procedure of realization downlink data shunt in the base station system and the processing procedure that upstream data closes the road respectively in detail.
Fig. 4 realizes downlink data structured flowchart along separate routes in base station system among one embodiment.As shown in Figure 4, the downgoing baseband interface unit comprises: data/address bus (D_BUS) unit 1061,1062, select control unit 1071,1072.Wherein, D_BUS unit 1061 and select control unit 1071 corresponding to Radio Frequency Subsystem 1 is represented with D_BUS 1 and selection control unit 1 respectively below; D_BUS unit 1062 and select 1072 of control units corresponding to Radio Frequency Subsystem 2 is represented with D_BUS 2 and selection control unit 2 respectively.Select control unit 1 to be connected with D_BUS 1, D_BUS 1 is connected with TRX1; Select control unit 2 to be connected with D_BUS 2, D_BUS 2 is connected with TRX 2.Suppose to have in this base station 3 sub-districts, then the coded modulation unit comprises the coded modulation subelement at 3 sub-districts (Cell), is respectively the coded modulation subelement 101D2 of coded modulation subelement 101D1, Cell2 of Cell1 and the coded modulation subelement 101D3 of Cell3.In the baseband processing unit is the relation that is connected entirely at the coded modulation subelement of each sub-district and selection control unit in the downgoing baseband interface unit, and promptly the coded modulation subelement of Cell1, Cell2, Cell3 is connected with selecting control unit 1 and selection control unit 2 respectively.Produce the downgoing baseband signal of respective cell at the coded modulation subelement of each sub-district after, in the downgoing baseband signal, add the corresponding district numbering, and pass to the selection control unit that all are connected with self.
In system shown in Figure 4, realize that downlink data process prescription along separate routes is as described below.
In selecting control unit, set in advance the numbering of the Radio Frequency Subsystem institute respective antenna institute coverage cell corresponding, select control unit will select to pass to corresponding D_BUS with the corresponding downgoing baseband signal of self set cell number with self.The numbering of the sub-district that described cell number is covered for the Radio Frequency Subsystem institute respective antenna of selecting the control unit correspondence.For example, during two antenna coverage cell 1 in system shown in Figure 4, select control unit 1 and select all to be provided with in the control unit 2 numbering of sub-district 1.
After selecting control unit from the coded modulation unit, to receive the downgoing baseband signal of each sub-district, the downgoing baseband signal of the cell number corresponding district that selection sets in advance with self, pass to corresponding D_BUS, its method is: select control unit to obtain cell number from received downgoing baseband signal, and judge whether the cell number that sets in advance with self is consistent, if then described downgoing baseband signal is passed to corresponding D_BUS, otherwise is not done any processing.
After D_BUS receives the downgoing baseband signal of selecting control unit output, pass to corresponding TRX unit, TRX unit and RF unit and antenna are downlink radio-frequency signal according to foregoing method with downgoing baseband signal transformation and carry out launching after the power amplification.
According to above process, the downgoing baseband signal of the sub-district that the selection control unit 1 among Fig. 4 is identical with the cell number of selecting control unit 2 all will set in advance with self is passed to corresponding D_BUS 1 and D_BUS 2 respectively; D_BUS 1 and D_BUS 2 pass to received downgoing baseband signal corresponding Radio Frequency Subsystem respectively then, again by Radio Frequency Subsystem with downgoing baseband signal transformation be downlink radio-frequency signal and it is carried out power amplification after, pass to corresponding sky alignment corresponding district emission.
System shown in Figure 4 can also be applicable to that the base station adopts the situation of main diversity downlink data.At this moment, the coded modulation subelement at each sub-district in baseband processing unit comprises two parts of main diversity respectively, and links to each other with selecting control unit 1 and selection control unit 2 respectively.If in the time of need sending main diversity downlink data at a sub-district, the main diversity of selecting control unit 1 and selecting to set in advance respective cell in the control unit 2 is numbered, like this, main diversity downlink data will be launched by Radio Frequency Subsystem and the antenna corresponding respectively with selecting control unit 1 and 2.
In base station system, when using downgoing baseband interface unit shown in Figure 4 to finish the shunt of downlink data at a sub-district, also need to use corresponding downstream baseband interface cell processing downlink data at other sub-district, can carry out plot planning and system configuration neatly like this.Suppose that 3 sub-districts are arranged under the base station, wherein sub-district 1 needs to use the antenna of two different directions to cover this sub-district, and other two sub-districts 2 and sub-district 3 respectively use an antenna to cover.In the above-mentioned base station system of supposing, can handle all sub-districts downlink data structured flowchart as shown in Figure 5.In the plot planning at base station system shown in Figure 5, if Radio Frequency Subsystem 1 and Radio Frequency Subsystem 4 pairing two antenna coverage cell 1, Radio Frequency Subsystem 2 and Radio Frequency Subsystem 3 pairing antennas are coverage cell 2 and sub-district 3 respectively, then when system configuration, the numbering of sub-district 1 is set in selection control unit 1 in the downgoing baseband interface unit and the selection control unit 4, and selecting control unit 2 that the numbering of sub-district 2 is set, the numbering of sub-district 3 is set in selecting control unit 3, like this, just can be according to the mode of the plot planning of this base station system, each sub-district is served accordingly.Change the corresponding relation of antenna and sub-district if desired, then the cell number that only need reset in the corresponding selection control unit gets final product.
Provide a kind of downlink data structured flowchart along separate routes of realizing below again, Fig. 6 realizes downlink data structured flowchart along separate routes in base station system among another embodiment.With embodiment illustrated in fig. 4 different be that the downgoing baseband interface unit further comprises branching unit 1011.In structure shown in Figure 6, the coded modulation subelement of each sub-district is connected with branching unit respectively, and branching unit is connected with selecting control unit 1 and selection control unit 2 respectively.Thereby the coded modulation subelement of each sub-district is passed to branching unit respectively with the downgoing baseband signal of respective cell, passes to the selection control unit that all are connected with self respectively by branching unit again.In structure shown in Figure 6, the function of other unit is identical with function among Fig. 4, introduces no longer in detail at this.
At the base station that covers a plurality of sub-districts, the internal structure of downgoing baseband interface unit also can adopt structure shown in Figure 6.The coded modulation subelement of all sub-districts all links to each other with branching unit in the downgoing baseband interface unit under the base station, and the downgoing baseband signal of each sub-district is passed to branching unit respectively; And branching unit links to each other with the pairing selection control unit of antenna that covers each sub-district respectively, and received downgoing baseband signal is passed to all selection control units that are connected with self respectively; Select control unit then according to the sub-district that self pairing antenna covered, select the downgoing baseband signal of respective cell to be sent to each self-corresponding Radio Frequency Subsystem.
Based on above-described realization downlink data system along separate routes, use a plurality of antennas to cover at each sub-district under the base station, and when described a plurality of antenna has distributed Radio Frequency Subsystem respectively correspondingly, realize downlink data flow process along separate routes as shown in Figure 7, may further comprise the steps:
Step 701: the baseband coding modulating unit carries out the downgoing baseband signal that coded modulation obtains respective cell respectively to the downlink data of each sub-district under the base station.
Step 702: all Radio Frequency Subsystems of the downgoing baseband signal of each sub-district being passed to all antenna correspondences that cover respective cell respectively.
Among the present invention, the mainly shunt that realizes downlink data by this step 702.During specific implementation, need set in advance the corresponding relation of the numbering of antenna and this antenna institute coverage cell, perhaps set in advance the corresponding relation of the numbering of the Radio Frequency Subsystem antenna institute coverage cell corresponding with it.And in step 701, the baseband coding modulating unit will add cell number in the downgoing baseband interface unit; In this step 702, from the downgoing baseband signal, obtain cell number, and, received downgoing baseband signal is passed to the pairing Radio Frequency Subsystem of the antenna corresponding with the cell number of being obtained according to the set antenna and the corresponding relation of cell number; Perhaps from the downgoing baseband signal, obtain cell number, and, received downgoing baseband signal is passed to the Radio Frequency Subsystem corresponding with the cell number of being obtained according to the set Radio Frequency Subsystem and the corresponding relation of cell number.
Step 703: each Radio Frequency Subsystem is a downlink radio-frequency signal with received downgoing baseband signal transformation respectively, described downlink radio-frequency signal is carried out power amplification after, be transmitted to the sub-district that self covers by the antenna of correspondence.
Provide the upstream data processing procedure below again.Fig. 8 is for realizing that in base station system upstream data closes the structured flowchart on road.As shown in Figure 8, the uplink baseband interface unit comprises: D_BUS unit 1061,1062, combiner unit 108, data selection unit 109.Wherein, D_BUS unit 1061 is represented with D_BUS 1 below corresponding to Radio Frequency Subsystem 1; 1062 of D_BUS unit are represented with D_BUS 2 corresponding to Radio Frequency Subsystem 2.D_BUS 1 is connected with TRX 1; D_BUS 2 is connected with TRX 2.Corresponding with base station system shown in Figure 4, suppose to have in this base station 3 sub-districts, then the demodulation coding unit comprises the demodulation coding subelement of 3 sub-districts (Cell), is respectively the demodulation coding subelement 101U3 of demodulation coding subelement 101U2, Cell3 of demodulation coding subelement 101U1, the Cell2 of Cell1.Data selection unit links to each other with demodulation coding subelement at each sub-district respectively.
In system shown in Figure 8, it is as described below to realize that upstream data closes the process prescription on road.
At first, data selection unit set in advance and Radio Frequency Subsystem in corresponding relation between the numbering of TRX numbering and respective antenna institute of described Radio Frequency Subsystem institute coverage cell, the upstream data on the specific TRX can be passed to the demodulation coding subelement with the cell number respective cell.
After two antennas of a sub-district of covering receive the up radiofrequency signal of this sub-district respectively, pass to corresponding with self Radio Frequency Subsystem 1 and 2 that constitutes by RF unit and TRX unit respectively, respectively received up radiofrequency signal is transformed to the uplink baseband signal by described Radio Frequency Subsystem 1 and 2, passes to corresponding D_BUS 1 and D_BUS 2 more respectively.The uplink baseband signal that D_BUS 1 and D_BUS 2 will receive from the TRX1 and the TRX2 of correspondence is respectively passed to combiner unit.Combiner unit is passed to data selection unit after received described two-way uplink baseband signal is synthesized capable on the way baseband signal.Data selection unit is obtained the TRX numbering from the uplink baseband signal, and search the TRX numbering that sets in advance and the corresponding relation between the cell number according to TRX numbering, determine the numbering of this uplink baseband signal institute respective cell, after in the uplink baseband signal, adding described cell number then, pass to the demodulation coding subelement of the sub-district of respective cell numbering.
In order to carry out plot planning flexibly, when in the uplink baseband interface unit, handling upstream data, need close road control, be the flow direction that needs the uplink baseband signal on each D_BUS of control on the one hand, the uplink baseband signal demand of promptly controlling D_BUS is sent to combiner unit and still directly is sent to data selection unit; Also need to control the uplink baseband signal which D_BUS combiner unit need merge on the other hand.
Figure 9 shows that in base station system by closing the structured flowchart of road control and treatment upstream data.As shown in Figure 9, the uplink baseband interface unit has increased and has closed road control unit 1010 on architecture basics shown in Figure 8.In real system, TRX can also adopt two to receive one TRX, and at this moment, each is respectively corresponding two antennas of Radio Frequency Subsystem independently, and pairing two antennas of a described Radio Frequency Subsystem also can receive the upstream data of a sub-district.
Shown in Figure 9 close the road information of closing whether uplink baseband signal that the road control unit need set in advance each D_BUS needs to close the road.The described road information of closing is: have a plurality ofly if cover the antenna of same sub-district, and these antenna corresponding one by one different Radio Frequency Subsystem respectively is then with the uplink baseband signal synthetic a tunnel of these Radio Frequency Subsystems outputs; Have only one if cover the antenna of same sub-district, perhaps, the antenna that covers same sub-district has a plurality of but the corresponding same Radio Frequency Subsystem of these antenna does not then need to close the road.
In uplink baseband interface unit shown in Figure 9, to from two independently the uplink baseband signal of Radio Frequency Subsystem handle in accordance with the following methods: close the road information of closing that the road control unit sets in advance according to self and determine whether needs close the road for uplink baseband signal on D_BUS 1 and the D_BUS 2, close the road if determine the uplink baseband signal demand on D_BUS 1 and the D_BUS 2, then send the control information that flows to that the uplink baseband signal need be passed to combiner unit, close the road control information to what combiner unit sent the uplink baseband signal that need close on road D_BUS 1 and the D_BUS 2 simultaneously to D_BUS 1 and D_BUS2; Do not need to close the road if determine the uplink baseband signal on D_BUS 1 and the D_BUS 2, then send the control information that flows to that the uplink baseband signal need be passed to data selection unit to D_BUS 1 and D_BUS 2.Combiner unit closes the road control information according to what close the output of road control unit, will uplink baseband signal synthetic a tunnel from D_BUS 1 and D_BUS 2 after, pass to data selection unit.The processing procedure such as the processing among Fig. 8 of data selection unit are identical.
Be given in the structure of handling the upstream data of a plurality of sub-districts in the base station system below again.Suppose that 3 sub-districts are arranged under the base station, wherein sub-district 1 needs to use the antenna of two different directions to cover this sub-district, and other two sub-districts 2 and sub-district 3 respectively use an antenna to cover.In the base station system of described hypothesis, can handle all sub-districts upstream data structured flowchart as shown in figure 10.In the plot planning at base station system shown in Figure 10, if two antenna coverage cell 1 of 4 correspondences of Radio Frequency Subsystem 1 and Radio Frequency Subsystem, Radio Frequency Subsystem 2 and Radio Frequency Subsystem 3 pairing antennas are coverage cell 2 and sub-district 3 respectively, then when system configuration, close the road information of closing that uplink baseband signal that the uplink baseband signal demand that D_BUS 1 and D_BUS 4 are set in the control unit of road closes road, D_BUS 2 and D_BUS 3 does not need to close the road in the uplink baseband interface unit.Like this, two uplink baseband signals of sub-district 1 are closed the demodulation coding subelement of delivering to sub-district 1 in the baseband processing unit behind the road by the uplink baseband interface unit, and the uplink baseband signal of sub-district 2 and sub-district 3 is delivered to the demodulation coding subelement of the respective cell in the baseband processing unit respectively.When needs are changed the corresponding relation of Radio Frequency Subsystem and sub-district, only need reset the road information of closing of closing in the control unit of road and get final product.
Close the system on road based on above-described realization upstream data, use a plurality of antennas to cover at each sub-district under the base station, and when described a plurality of antenna has distributed Radio Frequency Subsystem respectively correspondingly, realize that flow process that upstream data closes the road as shown in figure 11, may further comprise the steps:
Step 1101: each antenna receives the up radiofrequency signal that self institute's coverage cell is sent respectively, passes to the Radio Frequency Subsystem corresponding with self; Each Radio Frequency Subsystem is passed to the uplink baseband interface unit after received up radiofrequency signal is transformed to the uplink baseband signal.
Step 1102: definite each the pairing sub-district of uplink baseband signal that is received of uplink baseband interface unit, if there is two-way uplink baseband signal at least corresponding sub-district, then the uplink baseband signal of this sub-district is combined into to go on the way and passes to the base band demodulating unit after the baseband signal; If a corresponding sub-district has only capable on the way baseband signal, then the uplink baseband signal of this sub-district is directly passed to the base band demodulating decoding unit.
Among the present invention, the realization upstream data closes the process on road and is finished by this step 1102.When same sub-district is covered by a plurality of antennas,, then need to close the uplink baseband signal of each Radio Frequency Subsystem of road if described antenna is distinguished corresponding different Radio Frequency Subsystems; If all corresponding same Radio Frequency Subsystem of described antenna, then do not need to close this Radio Frequency Subsystem of road the uplink baseband signal that received of corresponding each antenna; When a sub-district is only covered by an antenna, do not need to close road uplink baseband signal.Therefore, in the specific implementation process, can set in advance the road information of closing whether the aforesaid uplink baseband signal that receives from each Radio Frequency Subsystem needs to close the road at the uplink baseband interface unit.Accordingly, the specific implementation process of this step 1102 is: the uplink baseband interface unit is according to the described road information of closing, whether received uplink baseband signal between need close road, synthetic the going on the way of the required uplink baseband signal that closes the road passed to the base band demodulating decoding unit after the baseband signal if determining; The uplink baseband signal that does not need to close the road is directly passed to the base band demodulating decoding unit.
In addition, in order the uplink baseband signal to be sent to the demodulation coding subelement of respective cell in the base band demodulating decoding unit respectively, the uplink baseband interface unit also needs to set in advance the corresponding relation of antenna and this antenna institute coverage cell numbering.Perhaps, be the TRX unit owing in specific implementation, the uplink baseband signal is passed to the concrete unit of uplink baseband interface, therefore, can also set in advance the corresponding relation of TRX numbering and this respective antenna institute of TRX institute coverage cell numbering.Accordingly, in step 1101, when Radio Frequency Subsystem is passed to the uplink baseband interface unit with the uplink baseband signal, need in the uplink baseband signal, add pairing aerial information of this uplink baseband signal or TRX numbering; And in step 1102, the concrete steps of the uplink baseband signal being passed to the base band demodulating decoding unit are: determine corresponding antenna according to the uplink baseband signal, perhaps from the uplink baseband signal, obtain the TRX numbering, and search described corresponding relation and obtain corresponding district numbering, after in described uplink baseband signal, adding described cell number then, pass to demodulation coding subelement with described cell number corresponding district.
Step 1103: the base band demodulating decoding unit carries out the upstream data that demodulation coding obtains respective cell to the uplink baseband signal of each received sub-district.
In above-described uplink baseband interface unit and downgoing baseband interface unit, a D_BUS is respectively arranged at each Radio Frequency Subsystem.In the base station system of reality, can be public in uplink baseband interface unit and downgoing baseband interface unit at the D_BUS of each Radio Frequency Subsystem.For example, when using two antennas to cover a sub-district, can handle the uplink and downlink data base station system structure as shown in figure 12.Shown in Figure 12, the downgoing baseband signal that D_BUS will export from select control unit is given TRX, perhaps, will pass to combiner unit or data selection unit from the uplink baseband signal that TRX receives according to the control of closing the road control unit.In described base station system, processing at downlink data can also be adopted structure shown in Figure 6, promptly in the baseband interface unit of Figure 12, increase branching unit, at this moment, the coded modulation subelement of each sub-district links to each other with branching unit respectively in the baseband processing unit, and branching unit links to each other with selecting control unit respectively again.For the function of other unit and above-mentioned describe in uplink baseband interface unit and downgoing baseband interface unit the same, the descriptions thereof are omitted at this.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (24)

1, a kind of downlink data system along separate routes that realizes in the base station, this system comprises a baseband coding modulating unit and is used to cover at least two antennas of single subdistrict, it is characterized in that this system also comprises: with the Radio Frequency Subsystem of described antenna number same number;
Wherein, each antenna of each sub-district links to each other with a Radio Frequency Subsystem respectively;
Described baseband coding modulating unit is used for downlink data to each sub-district to carry out respectively the downgoing baseband signal of each sub-district being passed to pairing all Radio Frequency Subsystems of all antennas that cover respective cell respectively after coded modulation obtains the downgoing baseband signal of respective cell;
It is downlink radio-frequency signal that described each Radio Frequency Subsystem is respectively applied for the downgoing baseband signal transformation that will be received, and described downlink radio-frequency signal is carried out passing to the antenna that is connected with self after the power amplification;
Described each antenna is used for launching resulting downlink radio-frequency signal to the sub-district that self covers.
2, system according to claim 1 is characterized in that, this system further comprises: be used to cover the individual antenna of single subdistrict, the Radio Frequency Subsystem that connects one to one with the individual antenna of described single subdistrict;
Wherein, the downlink data that described baseband coding modulating unit is further used for sub-district that described each individual antenna is covered carries out respectively after coded modulation obtains the downgoing baseband signal of respective cell, and the downgoing baseband signal of the sub-district that described each individual antenna is covered is passed to the pairing Radio Frequency Subsystem of antenna that covers respective cell respectively;
The downgoing baseband signal transformation that the Radio Frequency Subsystem of the individual antenna correspondence of described each single subdistrict is used for being received is downlink radio-frequency signal, and described downlink radio-frequency signal is carried out passing to the antenna that is connected with self after the power amplification;
The antenna of described each single subdistrict correspondence is used for launching resulting downlink radio-frequency signal to the sub-district that self covers.
3, system according to claim 1 and 2 is characterized in that, this system further comprises: the downgoing baseband interface unit;
Described downgoing baseband interface unit is arranged between all Radio Frequency Subsystems and the described baseband coding modulating unit, be used to receive the downgoing baseband signal of each sub-district of baseband coding modulating unit output, and the downgoing baseband signal of each sub-district of being received is passed to pairing all Radio Frequency Subsystems of all antennas that cover respective cell respectively.
4, system according to claim 3 is characterized in that, described Radio Frequency Subsystem comprises: a radio-frequency (RF) transceiver TRX, a radio frequency unit; Wherein, TRX links to each other with RF, and the antenna that RF is corresponding with self place Radio Frequency Subsystem links to each other;
Described TRX is used to receive the downgoing baseband signal of downgoing baseband interface unit output, and after received downgoing baseband signal transformation is downlink radio-frequency signal, passes to the RF unit that is connected with self;
The antenna that is connected with self is passed to after being used for the downlink radio-frequency signal that receives from the TRX that is connected with self carried out power amplification in described RF unit.
5, system according to claim 4 is characterized in that,
Described downgoing baseband interface unit comprises: data/address bus, select control unit; Wherein, data/address bus is identical with the number of Radio Frequency Subsystem with the number of selecting control unit, and data/address bus, selection control unit and Radio Frequency Subsystem are corresponding one by one; Described corresponding with self the respectively data/address bus of control unit of respectively selecting links to each other, and the TRX in corresponding with self the respectively Radio Frequency Subsystem of each data/address bus links to each other;
Described baseband coding modulating unit comprises the coded modulation subelement of each sub-district that covers at described base station; Described coded modulation subelement at each sub-district selects control unit to link to each other with all respectively;
Described coded modulation subelement at each sub-district is used for the downlink data of respective cell is carried out the downgoing baseband signal that coded modulation obtains respective cell, and after in the downgoing baseband signal, adding the numbering of respective cell, pass to all selection control units that are connected with self;
The described control unit of respectively selecting is used for the downgoing baseband signal of exporting from the received coded modulation subelement at each sub-district, selects the downgoing baseband signal of respective cell, passes to the data/address bus that is connected with self;
Described each data/address bus is used for and will passes to the TRX that is connected with self from the received downgoing baseband signal of selection control unit that self connects.
6, system according to claim 4 is characterized in that,
Described downgoing baseband interface unit comprises: data/address bus, select control unit, branching unit; Wherein, data/address bus is identical with the number of Radio Frequency Subsystem with the number of selecting control unit, and data/address bus, selection control unit and Radio Frequency Subsystem are corresponding one by one; Described corresponding with self the respectively data/address bus of control unit of respectively selecting links to each other, and the TRX in corresponding with self the respectively Radio Frequency Subsystem of each data/address bus links to each other;
Described branching unit is arranged on to be selected between control unit and the baseband coding modulating unit, and branching unit selects control unit to link to each other with all;
Described baseband coding modulating unit comprises the coded modulation subelement of each sub-district that covers at described base station; Coded modulation subelement at each sub-district links to each other with branching unit respectively;
Described coded modulation subelement at each sub-district is used for the downlink data of respective cell is carried out the downgoing baseband signal that coded modulation obtains respective cell, and after in the downgoing baseband signal, adding the numbering of respective cell, pass to the branching unit that is connected with self;
Described branching unit is used for received downgoing baseband signal is passed to all selection control units that are connected with self respectively;
The described control unit of respectively selecting is used for the downgoing baseband signal of exporting from the received coded modulation subelement at each sub-district, selects the downgoing baseband signal of respective cell, passes to the data/address bus that is connected with self;
Described each data/address bus is used for and will passes to the TRX that is connected with self from the received downgoing baseband signal of selection control unit that self connects.
7, a kind of downlink data method along separate routes that realizes in the base station, described base station comprises at least two antennas that cover single subdistrict, it is characterized in that, the respectively corresponding Radio Frequency Subsystem of each antenna of described each sub-district, this method comprises:
A. the baseband coding modulating unit carries out the downgoing baseband signal that coded modulation obtains respective cell respectively to the downlink data of each sub-district;
B. the downgoing baseband signal of described each sub-district is passed to all Radio Frequency Subsystems of all antenna correspondences that cover respective cell respectively;
C. each Radio Frequency Subsystem is a downlink radio-frequency signal with received downgoing baseband signal transformation respectively, and described downlink radio-frequency signal is carried out passing to corresponding antenna after the power amplification, and antenna is transmitted to received downlink radio-frequency signal the sub-district that self covers.
8, method according to claim 7 is characterized in that, described base station further comprises the individual antenna that is used to cover single subdistrict, the respectively corresponding Radio Frequency Subsystem of described individual antenna;
Described step a further comprises: the baseband coding modulating unit carries out the downgoing baseband signal that coded modulation obtains respective cell respectively to the downlink data of the sub-district that described each individual antenna covers;
Described step b further comprises: the downgoing baseband signal of described single subdistrict is passed to the Radio Frequency Subsystem of the antenna that covers respective cell respectively;
Described step c further comprises: each Radio Frequency Subsystem of the individual antenna correspondence of described each single subdistrict is a downlink radio-frequency signal with received downgoing baseband signal transformation respectively, described downlink radio-frequency signal is carried out passing to corresponding antenna after the power amplification, and antenna is transmitted to received downlink radio-frequency signal the sub-district that self covers.
9, according to claim 7 or 8 described methods, it is characterized in that, the corresponding relation of the numbering of antenna and this antenna institute coverage cell is set;
Add the numbering of this downgoing baseband signal institute respective cell in the resulting downgoing baseband signal of step a;
Described step b is: obtain cell number from the downgoing baseband signal, and according to the set antenna and the corresponding relation of cell number, described downgoing baseband signal is passed to and the pairing Radio Frequency Subsystem of cell number respective antenna that is obtained.
10, a kind ofly realize that in the base station upstream data closes the system on road, this system comprises a base band demodulating decoding unit, it is characterized in that, this system also comprises: a uplink baseband interface unit, with the Radio Frequency Subsystem of described antenna number same number;
Wherein, each antenna of each sub-district links to each other with a Radio Frequency Subsystem respectively; The uplink baseband interface unit links to each other with all Radio Frequency Subsystems respectively;
Described each antenna is used to receive the up radiofrequency signal that the sub-district sent that self covers, and passes to the Radio Frequency Subsystem that is connected with self;
After the up radiofrequency signal that described each Radio Frequency Subsystem is used for receiving from the antenna that is connected with self is transformed to the uplink baseband signal, pass to the uplink baseband interface unit;
Described uplink baseband interface unit is used for being combined into going on the way after the baseband signal of respective cell from the uplink baseband signal that all Radio Frequency Subsystems that all antennas of each sub-district connect receive, and passes to the base band demodulating decoding unit;
Described base band demodulating decoding unit is used for each received uplink baseband signal is carried out the upstream data that demodulation coding obtains respective cell.
11, system according to claim 10 is characterized in that, described Radio Frequency Subsystem comprises: a radio-frequency (RF) transceiver TRX, a radio frequency unit; Wherein, TRX links to each other with RF, and the antenna that RF is corresponding with self place radio system links to each other;
Described RF unit is used for the up radiofrequency signal that receives from the antenna that is connected with self is passed to the TRX that is connected with self;
After the up radiofrequency signal that described TRX is used for receiving from the RF unit that is connected with self is transformed to the uplink baseband signal, pass to the uplink baseband interface unit.
12, system according to claim 11 is characterized in that,
Described uplink baseband interface unit comprises: a combiner unit, a data selected cell, data/address bus; Wherein, the number of data/address bus is identical with the number of described Radio Frequency Subsystem, and data/address bus is corresponding one by one with Radio Frequency Subsystem; TRX in corresponding with self the respectively Radio Frequency Subsystem of described each data/address bus links to each other; Combiner unit links to each other with data selection unit with data/address bus respectively;
Described base band demodulating decoding unit comprises the demodulation coding subelement of each sub-district that covers at described base station; Described demodulation coding subelement at each sub-district links to each other with described data selection unit respectively;
Described TRX is used for passing to the data/address bus that links to each other with self after uplink baseband signal interpolation self TRX numbering;
Described each data/address bus is used for received uplink baseband signal is passed to combiner unit;
Described combiner unit is used for the uplink baseband signal from each received sub-district of data/address bus is combined into going on the way after the baseband signal of respective cell, passes to data selection unit;
Described data selection unit be used for being provided with and the numbering of Radio Frequency Subsystem TRX numbering and respective antenna institute of described Radio Frequency Subsystem institute coverage cell between corresponding relation, and be used for obtaining the TRX numbering from received uplink baseband signal, after searching described corresponding relation and obtain cell number according to the TRX that obtained numbering, after in the uplink baseband signal, adding described cell number, pass to the demodulation coding subelement of described cell number institute respective cell;
Described demodulation coding subelement at each sub-district is used for the uplink baseband signal of respective cell is carried out the upstream data that demodulation coding obtains respective cell.
13, system according to claim 12 is characterized in that, this system further comprises: be used to cover the individual antenna of single subdistrict, the Radio Frequency Subsystem that connects one to one with the individual antenna of described single subdistrict;
The antenna of described each single subdistrict correspondence is used to receive the up radiofrequency signal that the sub-district sent that self covers, and passes to the Radio Frequency Subsystem that is connected with self;
After the up radiofrequency signal that the Radio Frequency Subsystem of the individual antenna correspondence of described each single subdistrict is used for receiving from the antenna that self connects is transformed to the uplink baseband signal, pass to the uplink baseband interface unit;
Described uplink baseband interface unit is further used for definite pairing sub-district of uplink baseband signal that receives from each Radio Frequency Subsystem, if there is two-way uplink baseband signal at least corresponding sub-district, then the uplink baseband signal of this sub-district is combined into going on the way of this sub-district and passes to the base band demodulating decoding unit after the baseband signal; Perhaps, if a corresponding sub-district has only capable on the way baseband signal, then the uplink baseband signal of this sub-district is directly passed to the base band demodulating decoding unit;
Described base band demodulating decoding unit is further used for the uplink baseband signal of each received sub-district is carried out the upstream data that demodulation coding obtains respective cell respectively.
14, according to claim 12 or 13 described systems, it is characterized in that,
Described uplink baseband interface unit further comprises: close the road control unit with data/address bus and combiner unit link to each other respectively;
The described road control unit that closes is used for flowing to the control information that flows to that combiner unit still is a data selection unit to the uplink baseband signal demand that data/address bus sends on the data/address bus, and send the data/address bus relevant information that need close the road to combiner unit close the road control information;
Described each data/address bus is used for according to the control information that flows to of closing road control unit output received uplink baseband signal being passed to combiner unit or data selection unit;
Described combiner unit is used for closing the road control information according to what close the output of road control unit, after will closing uplink baseband signal that the data/address bus on road receives and close the road from needs, passes to data selection unit.
15, a kind ofly realize that in the base station upstream data closes the method on road, described base station comprises at least two antennas that cover single subdistrict, it is characterized in that, each antenna of described each sub-district is Radio Frequency Subsystem of correspondence respectively, and this method comprises:
X. each antenna receives the up radiofrequency signal that the sub-district sent that self covers respectively, passes to the Radio Frequency Subsystem corresponding with self; Each Radio Frequency Subsystem will be transformed to the uplink baseband signal from the up radiofrequency signal that the antenna corresponding with self receives respectively;
Y. the uplink baseband signal of each sub-district is combined into the going on the way after the baseband signal of respective cell, passes to the base band demodulating decoding unit;
Z. the base band demodulating decoding unit carries out the upstream data that demodulation coding obtains respective cell respectively to the uplink baseband signal of each received sub-district.
16, method according to claim 15 is characterized in that, described base station further comprises the individual antenna that is used to cover single subdistrict; The respectively corresponding Radio Frequency Subsystem of described individual antenna;
Described step x further comprises: the individual antenna of described each single subdistrict receives the up radiofrequency signal that the sub-district sent that self covers respectively, passes to the Radio Frequency Subsystem corresponding with self; The pairing Radio Frequency Subsystem of the individual antenna of described single subdistrict will be transformed to the uplink baseband signal from the up radiofrequency signal that the antenna corresponding with self receives;
Described step y further comprises: determine each pairing sub-district of uplink baseband signal, if there is two-way uplink baseband signal at least corresponding sub-district, then the uplink baseband signal of this sub-district is combined into to go on the way and passes to the base band demodulating unit after the baseband signal; If a corresponding sub-district has only capable on the way baseband signal, then the uplink baseband signal of this sub-district is directly passed to the base band demodulating decoding unit;
Described step z further comprises: the base band demodulating decoding unit carries out the upstream data that demodulation coding obtains respective cell respectively to the uplink baseband signal of each received sub-district.
17, according to claim 15 or 16 described methods, it is characterized in that,
Whether the uplink baseband signal that each Radio Frequency Subsystem is set needs to close the road information of closing on road;
Described step y is: according to the described road information of closing, whether each uplink baseband signal between need close road, the required a plurality of uplink baseband signals that close a sub-district of correspondence on road are synthesized passing to the base band demodulating decoding unit after the capable on the way baseband signal of sub-district if determining; The uplink baseband signal that does not need to close a sub-district of correspondence on road is directly passed to the base band demodulating decoding unit.
18, method according to claim 17, it is characterized in that, the step that road information is closed in described setting is: when the antenna that covers same sub-district has two or more, if the corresponding different radio frequency subsystem of each antenna difference with the same sub-district of described covering then is provided with the uplink baseband signal that need close each Radio Frequency Subsystem of road; If with all corresponding same Radio Frequency Subsystem of each antenna of the same sub-district of described covering, then being provided with does not need to close the uplink baseband signal that each antenna received in this Radio Frequency Subsystem of road; When the antenna that covers same sub-district had only one, being provided with did not need to close road uplink baseband signal.
19, according to claim 15 or 16 described methods, it is characterized in that,
The corresponding relation of antenna and this antenna institute coverage cell numbering is set;
Step y is described to be passed to the base band demodulating decoding unit with the uplink baseband signal and is: determine the pairing antenna of this uplink baseband signal, and search described corresponding relation and obtain corresponding district numbering, after in described uplink baseband signal, adding described cell number then, pass to demodulation coding unit with described cell number corresponding district.
20, a kind of base station system, this system comprise a baseband processing unit and are used to cover at least two antennas of single subdistrict, it is characterized in that this system also comprises: the baseband interface unit, with the Radio Frequency Subsystem of described antenna number same number;
Wherein, the antenna of each sub-district links to each other with a Radio Frequency Subsystem respectively; The baseband interface unit is arranged between baseband processing unit and the Radio Frequency Subsystem;
Described baseband processing unit is used for downlink data to each sub-district to carry out respectively after coded modulation obtains the downgoing baseband signal of respective cell, pass to the baseband interface unit, perhaps, be used for each uplink baseband signal received from the baseband interface unit carried out the upstream data that demodulation coding obtains respective cell;
Described baseband interface unit is used to receive the downgoing baseband signal of each sub-district of baseband processing unit output, and the downgoing baseband signal of each sub-district of being received passed to pairing all Radio Frequency Subsystems of all antennas that cover respective cell respectively, perhaps, be used for being combined into going on the way after the baseband signal of respective cell, pass to baseband processing unit from the uplink baseband signal that all Radio Frequency Subsystems that all antennas of each sub-district connect receive;
It is downlink radio-frequency signal that described each Radio Frequency Subsystem is respectively applied for the downgoing baseband signal transformation that will receive from the baseband interface unit, described downlink radio-frequency signal is carried out passing to the antenna that is connected with self after the power amplification, perhaps, after the up radiofrequency signal that is used for receiving from the antenna that is connected with self is transformed to the uplink baseband signal, pass to the baseband interface unit;
Described each antenna is used for launching resulting downlink radio-frequency signal to the sub-district that self covers, and perhaps, is used to receive the up radiofrequency signal that the sub-district sent that self covers, and passes to the Radio Frequency Subsystem that is connected with self.
21, system according to claim 20 is characterized in that, this system further comprises: be used to cover the individual antenna of single subdistrict, the Radio Frequency Subsystem that connects one to one with the individual antenna of described single subdistrict;
The downlink data that described baseband processing unit is further used for sub-district that described each individual antenna is covered carries out respectively after coded modulation obtains the downgoing baseband signal of respective cell, pass to the baseband interface unit, perhaps, be further used for the uplink baseband signal from each received sub-district of baseband interface unit is carried out the upstream data that demodulation coding obtains respective cell respectively;
Described baseband interface unit is further used for receiving the downgoing baseband signal of the sub-district that the individual antenna of baseband processing unit output covers, and the downgoing baseband signal of the sub-district that the individual antenna that is received is covered is passed to the pairing Radio Frequency Subsystem of antenna that covers respective cell respectively; Perhaps, be further used for definite pairing sub-district of uplink baseband signal that receives from each Radio Frequency Subsystem, if there is two-way uplink baseband signal at least corresponding sub-district, then the uplink baseband signal of this sub-district is combined into going on the way of this sub-district and passes to baseband processing unit after the baseband signal, if a perhaps corresponding sub-district has only capable on the way baseband signal, then the uplink baseband signal of this sub-district is directly passed to baseband processing unit;
The downgoing baseband signal transformation that the Radio Frequency Subsystem of the individual antenna correspondence of described each single subdistrict is used for being received from the baseband interface unit is downlink radio-frequency signal, described downlink radio-frequency signal is carried out passing to the antenna that is connected with self after the power amplification, perhaps, after the up radiofrequency signal that is used for receiving from the antenna that self connects is transformed to the uplink baseband signal, pass to the baseband interface unit;
The antenna of described each single subdistrict correspondence is used for launching resulting downlink radio-frequency signal to the sub-district that self covers, and perhaps is used to receive the up radiofrequency signal that the sub-district sent that self covers, and passes to the Radio Frequency Subsystem that is connected with self.
22, according to claim 20 or 21 described systems, it is characterized in that,
Described Radio Frequency Subsystem comprises: a radio-frequency (RF) transceiver TRX, a radio frequency unit; Wherein, TRX links to each other with RF, and the antenna that RF is corresponding with self place radio system links to each other;
Described TRX is used to receive the downgoing baseband signal of baseband interface unit output, and after received downgoing baseband signal transformation is downlink radio-frequency signal, pass to the RF unit that is connected with self, perhaps, after the up radiofrequency signal that is used for receiving from the RF unit that is connected with self is transformed to the uplink baseband signal, pass to the baseband interface unit;
The antenna that is connected with self is passed to after being used for the downlink radio-frequency signal that receives from the TRX that is connected with self carried out power amplification in described RF unit, perhaps, is used for the up radiofrequency signal that receives from the antenna that is connected with self is passed to the TRX that is connected with self.
23, system according to claim 22 is characterized in that,
Described baseband interface unit comprises: data/address bus, select control unit, and close the road control unit, combiner unit, data selection unit; Wherein, data/address bus is identical with the number of Radio Frequency Subsystem with the number of selecting control unit, and data/address bus, selection control unit and Radio Frequency Subsystem are corresponding one by one; Described corresponding with self the respectively data/address bus of control unit of respectively selecting links to each other; TRX in corresponding with self the respectively Radio Frequency Subsystem of each data/address bus links to each other; Combiner unit links to each other with data selection unit with data/address bus respectively; Closing the road control unit links to each other with combiner unit with data/address bus respectively;
Wherein, at downlink data:
Described baseband processing unit comprises the coded modulation subelement of each sub-district that covers at described base station; Described coded modulation subelement at each sub-district selects control unit to link to each other with all respectively;
Described coded modulation subelement at each sub-district is used for the downlink data of respective cell is carried out the downgoing baseband signal that coded modulation obtains respective cell, and after in the downgoing baseband signal, adding the numbering of respective cell, pass to all selection control units that are connected with self;
The described control unit of respectively selecting is used for the downgoing baseband signal of exporting from the received coded modulation subelement at each sub-district, selects the downgoing baseband signal of respective cell, passes to the data/address bus that is connected with self;
Described each data/address bus is used for and will passes to the TRX that is connected with self from the received downgoing baseband signal of selection control unit that self connects;
At upstream data:
Described baseband processing unit comprises the demodulation coding subelement of each sub-district that covers at described base station; Described demodulation coding subelement at each sub-district links to each other with described data selection unit respectively;
Described TRX is used for passing to the data/address bus that links to each other with self after uplink baseband signal interpolation self TRX numbering;
The described road control unit that closes is used for flowing to the control information that flows to that combiner unit still is a data selection unit to the uplink baseband signal demand that data/address bus sends on the data/address bus, and send the data/address bus relevant information that need close the road to combiner unit close the road control information;
Described each data/address bus is used for according to the control information that flows to of closing road control unit output received uplink baseband signal being passed to combiner unit or data selection unit;
Described combiner unit is used for closing the road control information according to what close the output of road control unit, after will closing uplink baseband signal that the data/address bus on road receives and close the road from needs, passes to data selection unit;
Described data selection unit be used for being provided with and the numbering of Radio Frequency Subsystem TRX numbering and respective antenna institute of described Radio Frequency Subsystem institute coverage cell between corresponding relation, and be used for obtaining the TRX numbering from received uplink baseband signal, after searching described corresponding relation and obtain cell number according to the TRX that obtained numbering, after in the uplink baseband signal, adding described cell number, pass to the demodulation coding subelement of described cell number institute respective cell;
Described demodulation coding subelement at each sub-district is used for the uplink baseband signal of respective cell is carried out the upstream data that demodulation coding obtains respective cell.
24, system according to claim 22 is characterized in that,
Described baseband interface unit comprises: data/address bus, select control unit, and branching unit closes the road control unit, combiner unit, data selection unit; Wherein, data/address bus is identical with the number of Radio Frequency Subsystem with the number of selecting control unit, and data/address bus, selection control unit and Radio Frequency Subsystem are corresponding one by one; Described corresponding with self the respectively data/address bus of control unit of respectively selecting links to each other; Described branching unit is arranged on to be selected between control unit and the baseband processing unit, and branching unit selects control unit to link to each other with all; TRX in corresponding with self the respectively Radio Frequency Subsystem of each data/address bus links to each other; Combiner unit links to each other with data selection unit with data/address bus respectively; Closing the road control unit links to each other with combiner unit with data/address bus respectively;
Wherein, at downlink data:
Described baseband processing unit comprises the coded modulation subelement of each sub-district that covers at described base station; Coded modulation subelement at each sub-district links to each other with branching unit respectively;
Described coded modulation subelement at each sub-district is used for the downlink data of respective cell is carried out the downgoing baseband signal that coded modulation obtains respective cell, and after in the downgoing baseband signal, adding the numbering of respective cell, pass to the branching unit that is connected with self;
Described branching unit is used for received downgoing baseband signal is passed to all selection control units that are connected with self respectively;
The described control unit of respectively selecting is used for the downgoing baseband signal of exporting from the received coded modulation subelement at each sub-district, selects the downgoing baseband signal of respective cell, passes to the data/address bus that is connected with self;
Described each data/address bus is used for and will passes to the TRX that is connected with self from the received downgoing baseband signal of selection control unit that self connects;
At upstream data:
Described baseband processing unit comprises the demodulation coding subelement of each sub-district that covers at described base station; Described demodulation coding subelement at each sub-district links to each other with described data selection unit respectively;
Described TRX is used for passing to the data/address bus that links to each other with self after uplink baseband signal interpolation self TRX numbering;
The described road control unit that closes is used for flowing to the control information that flows to that combiner unit still is a data selection unit to the uplink baseband signal demand that data/address bus sends on the data/address bus, and send the data/address bus relevant information that need close the road to combiner unit close the road control information;
Described each data/address bus is used for according to the control information that flows to of closing road control unit output received uplink baseband signal being passed to combiner unit or data selection unit;
Described combiner unit is used for closing the road control information according to what close the output of road control unit, after will closing uplink baseband signal that the data/address bus on road receives and close the road from needs, passes to data selection unit;
Described data selection unit be used for being provided with and the numbering of Radio Frequency Subsystem TRX numbering and respective antenna institute of described Radio Frequency Subsystem institute coverage cell between corresponding relation, and be used for obtaining the TRX numbering from received uplink baseband signal, after searching described corresponding relation and obtain cell number according to the TRX that obtained numbering, after in the uplink baseband signal, adding described cell number, pass to the demodulation coding subelement of described cell number institute respective cell;
Described demodulation coding subelement at each sub-district is used for the uplink baseband signal of respective cell is carried out the upstream data that demodulation coding obtains respective cell.
CNA200610086537XA 2006-06-20 2006-06-20 Base station system and system and method for implementing downlink/uplink data branch/merge Pending CN101047420A (en)

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