CN103369727A - Radio remote equipment, baseband processing equipment and data transmission method - Google Patents
Radio remote equipment, baseband processing equipment and data transmission method Download PDFInfo
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- CN103369727A CN103369727A CN201210088461XA CN201210088461A CN103369727A CN 103369727 A CN103369727 A CN 103369727A CN 201210088461X A CN201210088461X A CN 201210088461XA CN 201210088461 A CN201210088461 A CN 201210088461A CN 103369727 A CN103369727 A CN 103369727A
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Abstract
The invention discloses radio remote equipment comprises a power supply module, radio remote unit (RRU) module, a fiber interface and a network interface, a WLAN access point (AP) module which is connected with the power supply module, a fiber interface data processing module which is connected with the fiber interface, and a combiner module which is connected with the network interface, wherein the combiner module and the fiber interface data processing module are respectively connected with the WLAN access point (AP) module and the radio remote unit (RRU) module. In addition, the invention also discloses baseband processing equipment and a distributed base station. According to the equipment, equipment can be combined, indoor and outdoor one-time construction can be facilitated,a machine room, a power supply and auxiliary equipment are shared, the unified management is facilitated, and the network equipment overall investment cost is reduced. The invention also discloses a distributed base station uplink and downlink data transmission method.
Description
Technical field
The present invention relates to communication equipment, especially refer to the fusion device of a kind of wlan network and cellular network device, belong to the communications field.
Background technology
Along with increasing rapidly of Mobile data flow, ((Wireless Local Area, antenna LAN) is increasingly important as important current-dividing network for WLAN.The fusion of access network equipment is to alleviate one of effective means of networking and the operation pressure.
Wlan network is generally by AP (Access Point, the antenna access point) with AC (Access Controller, access control point) forms, AP is the various indoor and outdoor cover antenna access point apparatus (generally carrying antenna) of placing near the user, AC is the centralized unit of control and forwarding AP business datum, up to a hundred AP of general single AC control link to each other by networks such as switch or routers between the two.
The cellular network device antenna side is mainly by RNC (Radio Network Controller, the aerial network controller), base station and antenna form, the at present most of employing in base station distributed base station kenel, by BBU (the Building Base band Unit that is responsible for Base-Band Processing, indoor Base-Band Processing BBU module) and the RRU of responsible radio frequency processing (Radio Remote Unit, radio frequency remoto module) two parts form, connect (hereinafter to be referred as the Ir interface) by optical fiber (Ir, interface optical interface) interface between the two.RNC and AC are similar, are responsible for processing and transmitting top signaling and the business datum of a plurality of BBU.
Fig. 1 is the connection diagram of WLAN AP of the prior art and AC equipment; Fig. 2 is the networking schematic diagram of cellular network device in the prior art; Fig. 3 is the network design schematic diagram of existing wlan network and cellular network;
At present wlan network and cellular network device are fully independent, generally independent construction network separately.
For outdoor cover, be generally independent addressing and construction, generally to adopt lamp stand, hang the mounting meanss such as strong such as WLANAP, the base station generally adopts the modes such as roof, steel tower to install; For indoor covering, it generally also is independent installation, but because indoor a plurality of floors exist compartment system and a plurality of antenna point (in order to single base station RRU radiofrequency signal is radiated to all floors), single WLAN AP coverage is less, generally at the indoor distributed system end WLAN AP signal is closed the road by mixer, share last radiating antenna point.
At present, be subject to the equipment kenel, there is following shortcoming in the network design mode at present:
1. two cover networks are independently built, and all relate to Indoor Coverage Reconstruction, and the construction of need to repeatedly marching into the arena easily produces and repeats construction, and efficient is not high;
Each independently AP equipment power supply access need be arranged, and need have netting twine or optical fiber to be connected to switch and pass back to AC equipment, can't the sharing base station device power supply (DPS), monitoring, transmission be supporting etc., has the investment waste;
3. two nets are independent, are unfavorable for that collaborative unified adjustment of two nets realize Traffic Distribution or cover effectively replenishing etc.
Summary of the invention
The present invention is directed to the shortcoming of prior art, a kind of WLAN AP and base station fusion device are provided, this equipment externally presents unified equipment form, and, can transmit simultaneously WLAN AP and Cellular Networks data, have extraordinary technique effect.
According to one object of the present invention, the invention provides a kind of radio frequency remote equipment, comprising: power module, remote radio RRU module, optical fiber interface and network interface also are provided with: WLAN access point AP module is connected with described power module; The optical fiber interface data processing module is connected with described optical fiber interface; The mixer module is connected with described network interface, and described mixer module also is connected with described remote radio RRU module with described WLAN access point AP module respectively with the optical fiber interface data processing module.
According to another purpose of the present invention, the invention provides a kind of baseband processing equipment, comprising: power module, Base-Band Processing BBU module, optical fiber interface and back transfer interface also are provided with: the WLAN data forwarding module is connected with described power module; The optical fiber interface data processing module is connected with described optical fiber interface; The back transfer interface processing module is connected with described back transfer interface, and described back transfer interface unit and optical fiber interface data processing module also connect respectively described WLAN data forwarding module and described Base-Band Processing BBU module.
In addition, the present invention also provides a kind of distributed base station, comprises aforesaid radio frequency remote equipment and baseband processing equipment, is connected by optical fiber between the two.
The present invention has taked after the such scheme, namely by on the equipment kenel, WLAN AP and base station RRU equipment being merged, externally present unified equipment and be connected with antenna or compartment system, and be back to switching network by unified optical fiber connection, send to respectively AC and RNC equipment, wherein, the present invention is based on WLANAP and honeycomb base station device and merge, can be beneficial to the indoor and outdoor one-off construction, share machine room, power supply and corollary equipment, be convenient to unified maintenance management, reduce network equipment overall investment cost.
Wherein, the present invention also provides a kind of distributed base station downlink data transmission method, comprising: the downlink data signal that transmits in the baseband processing equipment receiving router extracts WLANAP downlink data and Cellular Networks downlink data from described downlink data signal;
Respectively described WLAN AP downlink data is transmitted and the Cellular Networks downlink data is carried out Base-Band Processing;
WLAN AP downlink data after processing and Cellular Networks downlink data are mixed formation one tunnel down mixing the transmission of data, pass to radio frequency remote equipment by optical fiber interface.
Wherein, the present invention also provides a kind of distributed base station downlink data transmission method, comprise: radio frequency remote equipment receives baseband processing equipment by the down mixing the transmission of data that optical fiber interface transmits, and isolates WLANAP downlink data and Cellular Networks downlink data from described down mixing the transmission of data;
Respectively described WLAN AP downlink data is carried out Base-Band Processing and radio frequency processing and described Cellular Networks downlink data is carried out radio frequency processing;
WLAN AP downlink data and Cellular Networks downlink data after processing are merged into downlink data signal, and export to antenna or chamber subsystem by network interface.
Wherein, the present invention also provides a kind of distributed base station uplink data transmission method, comprising: radio frequency remote equipment receives the user uplink data that transmits from antenna, and extracts WLAN AP upstream data and Cellular Networks upstream data from described upstream data;
Respectively described WLAN AP upstream data is carried out Base-Band Processing and radio frequency processing and described Cellular Networks upstream data is carried out radio frequency processing;
WLAN AP upstream data after processing and Cellular Networks upstream data are merged on the way capable mixed transport data of formation, and pass to baseband processing equipment by optical fiber interface.
Wherein, the present invention also provides a kind of distributed base station uplink data transmission method, comprise: baseband processing equipment receives the up mixed transport data of transmitting from radio frequency remote equipment, and therefrom extracts and isolate WLAN AP upstream data and Cellular Networks upstream data;
Respectively described WLAN AP upstream data is carried out the data retransmission processing and described Cellular Networks upstream data is carried out Base-Band Processing, WLAN AP upstream data and Cellular Networks upstream data after processing are merged into upstream data. signals and export to router.
Wherein, the present invention has taked after the above-mentioned data transmission method, can carry out the converged communication processing to WLAN AP and Cellular Networks data, and then reduce network equipment overall investment cost.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of writing, claims and accompanying drawing.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in detail, so that above-mentioned advantage of the present invention is clearer and more definite.
Fig. 1 is the connection diagram of WLAN AP of the prior art and AC equipment;
Fig. 2 is the networking schematic diagram of cellular network device in the prior art;
Fig. 3 is the network design schematic diagram of existing wlan network and cellular network;
Fig. 4 is the structural representation of radio frequency remote equipment of the present invention;
Fig. 5 is the schematic diagram of the mixer module in the radio frequency remote equipment among the present invention;
Fig. 6 is the schematic diagram of the optical fiber interface processing module in the radio frequency remote equipment among the present invention;
Fig. 7 is the structural representation of baseband processing equipment of the present invention;
Fig. 8 is the schematic diagram of the back transfer interface processing module in the baseband processing equipment among the present invention;
Fig. 9 is the schematic diagram of the optical fiber interface processing module in the baseband processing equipment among the present invention;
Figure 10 is the structural representation that the present invention comprises the distributed base station of radio frequency remote equipment and baseband processing equipment;
Figure 11 is the schematic flow sheet of distributed base station downlink data transmission method of the present invention;
Figure 12 is the schematic flow sheet of distributed base station uplink data transmission method of the present invention;
Figure 13 is the structural representation of Cellular Networks and WLAN AP downlink data frame among the present invention;
Figure 14 is the structural representation of Cellular Networks and WLAN AP uplink data frames among the present invention.
Embodiment
The present invention will be described in detail below in conjunction with the drawings and specific embodiments.
System embodiment one:
According to the present invention, comprise two equipment in the distributed base station of the present invention, specifically, comprising:
Baseband processing equipment and the radio frequency remote equipment with RRU-AP fusion function with BBU-AP fusion function are in order to the fusion between WLANAP equipment and BBU equipment, the RRU equipment to be provided, in order to overcome the shortcoming of prior art.
As described in Figure 4, be the structural representation of radio frequency remote equipment of the present invention;
This equipment mainly provides base station RRU data processing function and WLANAP data processing function, wherein, as shown in Figure 4, described radio frequency remote equipment, comprise: power module, remote radio RRU module, optical fiber interface and network interface, different from existing structure, radio frequency remote equipment of the present invention, also be provided with: the WLAN access point AP module with complete WLANAP processing capacity is connected with described power module; The optical fiber interface data processing module is connected with described optical fiber interface; The mixer module is connected with described network interface, and described mixer module also is connected with described remote radio RRU module with described WLAN access point AP module respectively with the optical fiber interface data processing module.
Wherein, described WLAN access point AP module comprises WLAN AP Base-Band Processing BBU module and RF processing unit; Described base station radio frequency remoter RRU module comprises Digital IF Processing unit, radio-frequency (RF) power amplification processing unit and front-end processing unit, be that the RRU module is taked existing RRU modular design, WLAN access point AP module is taked existing WLANAP modular design and is realized complete WLANAP function.
And, described two module output signals externally are connected to antenna or indoor distributed system antenna transmission to the user by the mixer module, the two paths of signals of opposite side then is blended into one road signal by Ir (optical fiber) interface data Fusion Module, and is sent to the baseband processing equipment of opposite side.
Wherein, Fig. 5 is the schematic diagram of the mixer module in the radio frequency remote equipment among the present invention;
As shown in Figure 5, in order to realize separation and the merging to two paths of signals, described mixer module, comprise: the signal merge cells, the WLAN AP data and the Cellular Networks data that are used for the different frequency that will transmit from WLAN access point AP module and remote radio RRU module are merged into downlink data signal and export to network interface;
Signal extraction unit, be used for extracting and isolating WLAN AP data and Cellular Networks data according to the upstream data. signals that frequency transmits from network interface, and WLAN AP data after will extracting and the Cellular Networks data send to respectively WLAN access point AP module and remote radio RRU module is processed.
Wherein, Fig. 6 is the schematic diagram of the optical fiber interface processing module in the radio frequency remote equipment among the present invention, and as described in Figure 6, described optical fiber interface processing module comprises:
The Frame packaged unit is used for WLAN AP data and the packing of Cellular Networks data of transmitting from WLAN access point AP module and remote radio RRU module are formed up mixed transport data; And described up mixed transport data communication device is crossed optical fiber interface pass to baseband processing equipment;
The Frame unit of unpacking is used for baseband processing equipment is unpacked by the down mixing the transmission of data of optical fiber interface transmission; And the WLAN AP data after will separating and Cellular Networks data send to respectively WLAN access point AP module and base station radio frequency remoter RRU module.
In an embodiment, described Cellular Networks is TD-SCDMA or TD-LTE network, and described Frame packaged unit comprises:
Frame merges subelement, is used for according to the Cellular Networks data format described WLAN AP data configuration at the free timeslot of the Frame of described Cellular Networks data to form up mixed transport data;
The described Frame unit of unpacking comprises:
Frame splits subelement, is used for isolating WLAN AP data and Cellular Networks data according to data frame format from the extraction of down mixing the transmission of data.
Wherein, described mixer module, its hardware device realization that can take existing hardware circuit equipment and/or comprise computer program of optical fiber interface processing module, for example, the optical fiber interface processing module can adopt communication process device (FPGA) or other similar chips to realize.
Optical fiber interface processing module among the application except carrying out the common processing at above-mentioned FPGA device inside, also needs the processing of carrying out the data frame structure packing and unpacking.
In addition, because in general, the WLAN transmitting power is less than the transmitting power of base station equipment, thus, WLAN AP coverage distance is less than base station RRU coverage distance, therefore, and after the two merges, if need to satisfy unified coverage, in a preferred embodiment, also be provided with power regulation module, be used for regulating the transmitting power of described base station radio frequency remoter RRU module and/or WLAN access point AP module, for example, reduce the transmitting power of remote radio RRU module, perhaps, increase the transmitting power of WLAN AP equipment, perhaps, simultaneously both are regulated.
Fig. 7 is the structural representation of baseband processing equipment of the present invention;
Wherein, baseband processing equipment shown in Figure 7 mainly is the function that realizes that the BBU data are processed, and, because described WLAN access point AP module is located among the above-mentioned radio frequency remote equipment, it has finished relevant WLAN AP data processing function, for this reason, in this baseband processing equipment, with respect to described WLAN access point AP equipment, set one as the WLAN AP data retransmission unit of data retransmission, this WLAN AP data retransmission unit is except providing data retransmission, do not carry out other data and process, it can take existing circuit design, that is to say, baseband processing equipment of the present invention has realized Base-Band Processing function and WLAN data retransmission function.
Wherein, described BBU data processing unit takes existing BBU signal baseband treatments B BU module to get final product.
As shown in Figure 7, described baseband processing equipment, specifically comprise: optical fiber interface, back transfer interface, power module, Base-Band Processing BBU module, also be provided with for the WLAN AP data forwarding module that the WLAN data are transmitted, the optical fiber interface data processing module that is connected with optical fiber interface and the back transfer interface processing module that is connected with network interface, wherein, described back transfer interface processing module and optical fiber interface data processing module respectively with being connected of Base-Band Processing BBU module and WLANAP data forwarding module.
Wherein, Fig. 8 is the schematic diagram of the back transfer interface processing module in the baseband processing equipment among the present invention; Shown in 8, described back transfer interface processing module comprises:
The signal merge cells is used for the WLAN AP data that will transmit from WLAN data forwarding module and Base-Band Processing BBU module and Cellular Networks data and adds different IP addresses and export to back transfer interface to be merged into upstream data. signals;
Signal extraction unit is used for and will extracts WLAN AP data and Cellular Networks data according to different IP addresses from the downlink data signal that back transfer interface transmits, and the data after will extracting sends to respectively WLAN data forwarding module and Base-Band Processing BBU module.
Wherein, Fig. 9 is the schematic diagram of the optical fiber interface processing module in the baseband processing equipment among the present invention; Shown in 9, described optical fiber interface processing module comprises:
The Frame packaged unit is used for WLAN AP data and the packing of Cellular Networks data of transmitting from WLAN data forwarding module and Base-Band Processing BBU module are formed the down mixing the transmission of data; And described down mixing the transmission of data passed to radio frequency remote equipment by optical fiber interface;
The Frame unit of unpacking is used for radio frequency remote equipment is unpacked by the down mixing the transmission of data of optical fiber interface transmission; And the WLAN AP data after will separating and Cellular Networks data send to respectively WLAN data forwarding module and Base-Band Processing BBU module.
Wherein, in a preferred embodiment, described Cellular Networks is TD-SCDMA or TD-LTE network, and described Frame packaged unit comprises:
Frame merges subelement, is used for according to the Cellular Networks data format described WLAN AP data configuration at the free timeslot of the Frame of described Cellular Networks data to form the down mixing the transmission of data;
The described Frame unit of unpacking comprises:
Frame splits subelement, is used for going out WLANAP data and Cellular Networks data according to the Cellular Networks data format from up mixed transport extracting data.
Wherein, described back transfer interface processing module, its hardware device realization that can take existing hardware circuit equipment and/or comprise computer program of optical fiber interface processing module are not elaborated to its physical circuit implementation at this.
Wherein, the present invention has taked after the such scheme, can be among two converged communication equipment with existing WLANAP equipment and BBU equipment, RRU integration of equipments, thus, described two network systems can common antenna, optical fiber interface, back transfer interface and power supply between BBU-RRU, can greatly save equipment investment cost and simplify engineering construction, have extraordinary signal transmission effect.
Embodiment of the method one:
The below carries out a detailed explanation to the data transmission method in the present embodiment.
Wherein, among the present embodiment, relate to the process of data separating, processing, merging and forwarding between the both direction (upstream data/downlink data), wherein, upstream data refers to that the user passes through antenna or chamber subsystem and described distributed base station to the data of RNC equipment or the transmission of AC equipment; Downlink data refers to the data that described RNC equipment or AC equipment transmit to the user by router and described distributed base station, antenna or chamber subsystem.
Wherein, Figure 11 is the schematic flow sheet of the transmission method of distributed base station downlink data of the present invention;
As shown in figure 11, it has illustrated the flow process that signal transmits and processes from the radio frequency remote equipment to the baseband processing equipment, and wherein, the treatment step in the described radio frequency remote equipment comprises:
S101, baseband processing equipment receive the downlink data signal that transmits from router;
From described downlink data signal, extract Cellular Networks downlink data and WLAN AP downlink data, and described WLAN downlink data is transmitted and described Cellular Networks downlink data is carried out Base-Band Processing;
Specifically comprise: the WLAN data that derive from the AC equipment of different IP addresses arrive described baseband processing equipment (BBU-AP fusion device) with the cellular network data that derives from RNC equipment by switch aggregation;
And, resolve separation through the back transfer interface processing module in the baseband processing equipment according to the different IP addresses information of each signal, and the data after will separating send to respectively WLAN AP data forwarding module and base band BBU data processing module is processed;
S102, WLAN downlink data and the Cellular Networks downlink data after the process Base-Band Processing that described process is transmitted mix formation mixed transport data, and pass radio frequency remote equipment by optical fiber interface and optical fiber transmission, comprising:
WLAN data after described the handling and cellular network data are carried out data frame structure by the optical fiber interface data processing module and are merged, and wherein, in the present embodiment, described Cellular Networks is TD-SCDMA or TD-LTE network, specifically comprises:
In the free timeslot of the Frame of described Cellular Networks downlink data, carry described WLANAP downlink data to form the down mixing the transmission of data according to the Cellular Networks data frame format.
Described down mixing the transmission of data is sent to radio frequency remote equipment (RRU-AP fusion device) by optical fiber interface processes, by said method, finished processing and the transmission of multiple signals.
Wherein, in radio frequency remote equipment, the treatment step in the described radio frequency remote equipment comprises:
S103, radio frequency remote equipment receive described down mixing the transmission of data, and it is extracted and resolve, be isolated into WLAN downlink data and Cellular Networks downlink data, and described WLAN downlink data and Cellular Networks downlink data are carried out respectively WLANAP processing and base station RRU processing;
Comprise: in the radio frequency remote equipment the above-mentioned mixed transport data that receive are resolved separation, the WLAN data of separating are sent into WLAN access point AP module and are carried out respective handling, and input in the mixer module;
The cellular network data of separating is sent into base station radio frequency remoter RRU module and is carried out the radio frequency transmission processing, and the data of handling are inputed to the mixer module;
Specifically comprise: from described down mixing the transmission of data, extract and isolate WLANAP downlink data and Cellular Networks downlink data according to the Cellular Networks data format.
S104, WLAN data and the Cellular Networks data of inciting somebody to action after treatment are merged into one road downlink data signal and pass to subscriber equipment by antenna or chamber subsystem.
Wherein, because described WLAN data are set to different tranmitting frequencies with the Cellular Networks data, therefore, in step, described mixer module is closed the road to the data of the different tranmitting frequencies of above-mentioned two parts and is become downlink data signal and input to antenna or be connected on the antenna by the chamber subsystem by the network interface unification, go out and arrive respectively in the different subscriber equipmenies by aerial radiation, by said method, finished processing and the transmission of multiple signals.
Wherein, for up direction (user data that network equipment sends over by the antenna reception subscriber equipment), Figure 12 is the schematic flow sheet of distributed base station uplink data transmission method of the present invention;
As shown in figure 12, two steps that it mainly is included in radio frequency remote equipment and the baseband processing equipment wherein, in the described radio frequency remote equipment, comprise the following steps:
S201, radio frequency remote equipment receive the up blended data of transmitting from subscriber equipment, and therefrom extract and isolate Cellular Networks upstream data and WLAN upstream data, and respectively described WLAN upstream data and Cellular Networks upstream data are carried out respectively respective handling, for example, WLAN upstream data radio frequency processing and Cellular Networks upstream data radio frequency processing.
Specifically comprise: the data communication device that antenna receives from air interface is crossed the mixer module and is separated into WLAN upstream data and Cellular Networks upstream data, comprising:
The different frequency that has according to described WLAN data and Cellular Networks data separates above-mentioned WLAN upstream data and Cellular Networks upstream data.
S202, mix formation through the WLAN data after the respective handling and Cellular Networks data and go on the way the mixed transport data described, and pass to baseband processing equipment by optical fiber, comprising:
WLAN data after handling and cellular network data are carried out data frame structure by the optical fiber interface data processing module and are merged, and are sent to baseband processing equipment (BBU-AP fusion device).
Wherein, described Cellular Networks is TD-SCDMA or TD-LTE network, and wherein, the WLAN AP upstream data after described will the processing and Cellular Networks upstream data merge on the way capable mixed transport data of formation, specifically comprise:
In the free timeslot of the Frame of described Cellular Networks upstream data, carry described WLAN AP upstream data according to the Cellular Networks data frame format and form described up mixed transport data.
Wherein, after described data enter into described baseband processing equipment, in described baseband processing equipment, comprise the following steps:
S203, baseband processing equipment receive described mixed transport data and it are resolved;
Be isolated into up WLAN upstream data and Cellular Networks upstream data, and described signal is carried out respectively WLAN AP data retransmission and Base-Band Processing;
Comprise: the above-mentioned fused data that receives is resolved to separate recover, the WLAN data of separating are sent into WLAN AP data forwarding module and are sent in the back transfer interface processing module;
The cellular network data of separating is sent into Base-Band Processing BBU module and is carried out the base band reception ﹠ disposal, and the data of handling are inputed in the back transfer interface processing module;
Specifically comprise: the data format according to described Cellular Networks is isolated WLAN AP upstream data and Cellular Networks upstream data from described up mixed transport extracting data.
S204, WLAN data and Cellular Networks data communication device that will be after treatment crossed router and are transmitted respectively an AC equipment or RNC equipment, comprising:
The back transfer interface processing module then adds above-mentioned two parts data different IP address informations and sends to back transfer interface, and is sent to respectively AC equipment and RNC equipment by described back transfer interface by route exchange device, thereby has realized data transfer.
Wherein, below in conjunction with specific embodiment and method optical fiber interface data processing module of the present invention is elaborated carrying out the data packing and unpack to form the mixed transport data.
In the prior art, the optical fiber interface protocol transmission of general employing standard between conventional BBU of base station and RRU, wherein, corresponding IQ (quadrature modulation data) data are the anchor-frame structure, that is to say, its form has stationarity, for this reason, can utilize above-mentioned characteristic to carry out the data mixing transmission.
Wherein, Figure 13 is the structural representation of Cellular Networks and WLAN AP downlink data frame among the present invention; Figure 14 is the structural representation of Cellular Networks and WLAN AP uplink data frames among the present invention.
Such as Figure 13 and shown in Figure 14, in a preferred embodiment, the application realizes the mixed transport of AP data according to the frame structure characteristics of TDD (time division duplex) communication system, take the frame structure of TD-SCDMA standard as example, wherein, TS0, DwPTS are descending time slot, transmitting downlink data, GP is blank spaces, and UpPTS, TS1 are ascending time slot, transmit ascending data.But TS2～TS6 flexible configuration is the uplink and downlink timeslot the transmission of data.
For present TD-SCDMA or TD-LTE network signal 2:4 time slot configuration commonly used, be that TS1, TS2 are ascending time slot, TS3～6 are descending time slot, and this moment, TS2 in the downlink data frame structure was reportedly countless, and TS3～TS6 is without transfer of data in the upstream data frame structure.
There is C﹠amp in the Ir interface protocol; M (control) data and IQ data two parts, timesharing transmits, descending C﹠amp; The M data in being in downlink data frame after the GP time slot data, up C﹠amp; Before the GP time slot data of M data in uplink data frames, IQ data (demodulated signal data) realize alignment at RRU, by said method, realize the mixed transport of TD-SCDMA signal and WLAN data.
That is to say, among the application, when carrying out the Frame packing, specifically comprise:
In the free timeslot at the Frame of Cellular Networks, carry described WLAN downlink data according to Cellular Networks data configuration form;
And, carrying out when Frame unpacks, specifically comprise: the corresponding relation according to Cellular Networks data configuration form and Frame is extracted corresponding Cellular Networks downlink data and WLAN downlink data, realizes transfer of data effect in the distributed base station of the present invention with this.
Wherein, the present invention has taked after the such scheme, can be among two converged communication equipment with existing WLANAP equipment and BBU equipment, RRU integration of equipments, and, behind above-mentioned data transmission method, described two network systems can common antenna, optical fiber interface, back transfer interface and power supply between BBU-RRU, can greatly save equipment investment cost and simplify engineering construction, has extraordinary signal transmission effect.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: read-only memory (Read Only Memory, abbreviation ROM), the various media that can be program code stored such as random access memory (Random Acess Memory is called for short RAM), magnetic disc, terminal phone software or CD.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (23)
1. radio frequency remote equipment comprises: power module, remote radio RRU module, optical fiber interface and network interface, it is characterized in that, and also be provided with: WLAN access point AP module is connected with described power module; The optical fiber interface data processing module is connected with described optical fiber interface; The mixer module is connected with described network interface, and described mixer module also is connected with described remote radio RRU module with described WLAN access point AP module respectively with the optical fiber interface data processing module.
2. radio frequency remote equipment according to claim 1, it is characterized in that, described mixer module, comprise: the signal merge cells, the WLAN AP data and the Cellular Networks data that are used for the different frequency that will transmit from WLAN access point AP module and remote radio RRU module are merged into one road downlink data signal to network interface;
Signal extraction unit be used for extracting WLANAP data and Cellular Networks data according to frequency from the upstream data. signals that network interface transmits, and the data after will extracting sends to respectively WLAN access point AP module and remote radio RRU module.
3. radio frequency remote equipment according to claim 1 is characterized in that, described optical fiber interface processing module comprises:
The Frame packaged unit, be used for the WLAN AP data transmitted from WLAN access point AP module and remote radio RRU module and the packing of Cellular Networks data formed and go on the way the mixed transport data, and described up mixed transport data communication device is crossed optical fiber interface pass to baseband processing equipment;
The Frame unit of unpacking, be used for baseband processing equipment is unpacked by the down mixing the transmission of data of optical fiber interface transmission, and the WLAN AP data after will separating and Cellular Networks data send to respectively WLAN access point AP module and base station radio frequency remoter RRU module.
4. radio frequency remote equipment according to claim 3, described Cellular Networks is TD-SCDMA or TD-LTE network, it is characterized in that, described Frame packaged unit comprises:
Frame merges subelement, is used for according to the Cellular Networks data format described WLAN AP data configuration at the free timeslot of the Frame of Cellular Networks data to form up mixed transport data;
The described Frame unit of unpacking comprises:
Frame splits subelement, is used for extracting WLAN AP data and Cellular Networks data according to the Cellular Networks data format from the down mixing the transmission of data.
5. radio frequency remote equipment according to claim 1 is characterized in that, also is provided with power regulation module, connects described remote radio RRU module and/or WLAN access point AP module.
6. baseband processing equipment comprises: power module, Base-Band Processing BBU module, optical fiber interface and back transfer interface, it is characterized in that, and also be provided with: the WLAN data forwarding module is connected with described power module; The optical fiber interface data processing module is connected with described optical fiber interface; The back transfer interface processing module is connected with described back transfer interface, and described back transfer interface unit and optical fiber interface data processing module also connect respectively described WLAN data forwarding module and described Base-Band Processing BBU module.
7. baseband processing equipment according to claim 6 is characterized in that, described back transfer interface processing module comprises:
The signal merge cells is used for the WLAN AP data that will transmit from WLAN data forwarding module and Base-Band Processing BBU module and Cellular Networks data and adds different IP addresses information and export to back transfer interface to form upstream data. signals;
Signal extraction unit is used for and will goes out WLANAP data and Cellular Networks data according to the IP address extraction from the downlink data signal that back transfer interface transmits, and the data after will extracting sends to respectively WLAN data forwarding module and Base-Band Processing BBU module.
8. baseband processing equipment according to claim 6 is characterized in that, described optical fiber interface processing module comprises:
The Frame packaged unit, be used for WLAN AP data and the packing of Cellular Networks data of transmitting from WLAN data forwarding module and Base-Band Processing BBU module are formed the down mixing the transmission of data, and described down mixing the transmission of data is passed to radio frequency remote equipment by optical fiber interface;
The Frame unit of unpacking is used for radio frequency remote equipment is unpacked by the up mixed transport data of optical fiber interface transmission, and the WLAN AP data after will separating and Cellular Networks data send to respectively WLAN data forwarding module and Base-Band Processing BBU module.
9. baseband processing equipment according to claim 6, described Cellular Networks is TD-SCDMA or TD-LTE network, it is characterized in that, described Frame packaged unit comprises:
Frame merges subelement, is used for according to the Cellular Networks data format described WLAN AP data configuration at the free timeslot of the Frame of Cellular Networks data to form the down mixing the transmission of data;
The described Frame unit of unpacking comprises:
Frame splits subelement, is used for going out WLAN AP data and Cellular Networks data according to the Cellular Networks data format from up mixed transport extracting data.
10. a distributed base station is characterized in that, comprises the arbitrary described radio frequency remote equipment of claim 1～5 and the arbitrary described baseband processing equipment of claim 6～9, is connected by optical fiber between described radio frequency remote equipment and the baseband processing equipment.
11. distributed base station according to claim 10 is characterized in that, described radio frequency remote equipment is by described back transfer interface connection route device equipment;
Wherein, described router device connects respectively AC equipment and RNC equipment; Described Base-Band Processing BBU equipment is connected to antenna or is connected to antenna by the chamber subsystem by described network interface, and described antenna and subscriber equipment communicate.
12. a distributed base station downlink data transmission method comprises:
The downlink data signal that transmits in the baseband processing equipment receiving router extracts WLAN AP downlink data and Cellular Networks downlink data from described downlink data signal;
Respectively described WLAN AP downlink data is transmitted and the Cellular Networks downlink data is carried out Base-Band Processing;
WLAN AP downlink data after processing and Cellular Networks downlink data are mixed formation one tunnel down mixing the transmission of data, pass to radio frequency remote equipment by optical fiber interface.
13. distributed base station downlink data transmission method according to claim 12, it is characterized in that, comprise different IP address informations in described WLANAP downlink data and the Cellular Networks downlink data, wherein, from described downlink data signal, extract WLAN AP downlink data and Cellular Networks downlink data, specifically comprise:
From described downlink data signal, extract and isolate corresponding WLAN AP downlink data and Cellular Networks downlink data according to the IP address.
14. according to claim 12 or 13 described distributed base station downlink data transmission methods, it is characterized in that, described Cellular Networks is TD-SCDMA or TD-LTE network, WLANAP downlink data after described will the processing and Cellular Networks downlink data mix formation one tunnel down mixing the transmission of data, specifically comprise:
In the free timeslot of the Frame of described Cellular Networks downlink data, carry described WLAN AP downlink data to form described down mixing the transmission of data according to the Cellular Networks data frame format.
15. a distributed base station downlink data transmission method comprises:
Radio frequency remote equipment receives baseband processing equipment by the down mixing the transmission of data that optical fiber interface transmits, and isolates WLAN AP downlink data and Cellular Networks downlink data from described down mixing the transmission of data;
Respectively described WLAN AP downlink data is carried out Base-Band Processing and radio frequency processing and described Cellular Networks downlink data is carried out radio frequency processing;
WLAN AP downlink data and Cellular Networks downlink data after processing are merged into downlink data signal, and export to antenna or chamber subsystem by network interface.
16. distributed base station downlink data transmission method according to claim 15 is characterized in that, described WLAN AP downlink data and the Cellular Networks downlink data isolated from described down mixing the transmission of data specifically comprises:
From described down mixing the transmission of data, extract and isolate WLANAP downlink data and Cellular Networks downlink data according to the Cellular Networks data format.
17. according to claim 15 or 16 described distributed base station downlink data transmission methods, it is characterized in that, described WLAN AP downlink data has different tranmitting frequencies with the Cellular Networks downlink data, WLAN AP downlink data and Cellular Networks downlink data after described will the processing are merged into downlink data signal, comprising:
Described WLAN AP downlink data and Cellular Networks downlink data with different tranmitting frequencies is merged into one road downlink data signal.
18. a distributed base station uplink data transmission method comprises:
Radio frequency remote equipment receives the user uplink data that transmits from antenna, and extracts WLAN AP upstream data and Cellular Networks upstream data from described upstream data;
Respectively described WLAN AP upstream data is carried out Base-Band Processing and radio frequency processing and described Cellular Networks upstream data is carried out radio frequency processing;
WLAN AP upstream data after processing and Cellular Networks upstream data are merged on the way capable mixed transport data of formation, and pass to baseband processing equipment by optical fiber interface.
19. distributed base station uplink data transmission method according to claim 18, it is characterized in that, described WLAN AP upstream data has different frequencies with the Cellular Networks upstream data, wherein, described WLAN AP upstream data and the Cellular Networks upstream data of extracting from described upstream data comprises:
From described upstream data, extract and isolate WLAN AP upstream data and Cellular Networks upstream data according to frequency.
20. according to claim 18 or 19 described distributed base station uplink data transmission methods, it is characterized in that, described Cellular Networks is TD-SCDMA or TD-LTE network, WLANAP upstream data after described will the processing and Cellular Networks upstream data merge on the way capable mixed transport data of formation, specifically comprise:
In the free timeslot of the Frame of described Cellular Networks upstream data, carry described WLAN AP upstream data according to the Cellular Networks data frame format and form described up mixed transport data.
21. a distributed base station uplink data transmission method comprises:
Baseband processing equipment receives the up mixed transport data of transmitting from radio frequency remote equipment, and therefrom extracts and isolate WLAN AP upstream data and Cellular Networks upstream data;
Respectively described WLAN AP upstream data is carried out the data retransmission processing and described Cellular Networks upstream data is carried out Base-Band Processing, WLAN AP upstream data and Cellular Networks upstream data after processing are merged into upstream data. signals and export to router.
22. distributed base station uplink data transmission method according to claim 21 is characterized in that, describedly isolates WLAN AP upstream data and Cellular Networks upstream data from up mixed transport extracting data, comprising:
Data format according to described Cellular Networks is isolated WLAN AP upstream data and Cellular Networks upstream data from described up mixed transport extracting data.
23. according to claim 21 or 22 described distributed base station uplink data transmission methods, it is characterized in that, WLAN AP upstream data and Cellular Networks upstream data after described will the processing are merged into upstream data. signals, comprising:
In described WLAN AP upstream data and Cellular Networks upstream data, add different IP address informations, and with the synthetic data-signal of going on the way of the data of described adding IP address information.
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