CN102647813B - Wireless communication method and distributed base station system - Google Patents
Wireless communication method and distributed base station system Download PDFInfo
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Abstract
An embodiment of the invention discloses a wireless communication method and a distributed base station system, which relates to the field of communication and can realize multi-communication-system support functions of BBUs (baseband units) on the premise of keeping existing networking modes unchanged. A data transmission method based on CPRI (common public radio interface) includes: transmitting the BBU of the second communication system to second control data of at least one radio remote unit (RRU) to convert similar-CPRI type combined data and transmitting the combined data to the BBU of the first communication system through similar-CPRI type channels; restoring the combined data received by the BBU of the first communication system to be second control data, transmitting the second control data and the first control data to at least one RRU through CPRI channels so that at least one RRU supports data uploading and/or downloading of the first communication system and the second communication system.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of wireless communications method and distributed base station system.
Background technology
Current 3G network uses distribution-type base station architecture in a large number, adopt wireless extension unit (the Radio Remote Unit connecting by optical fiber, be called for short RRU) and baseband processing unit (BaseBand Unit is called for short BBU), as shown in Figure 1.A BBU can support multiple RRU, adopts BBU+RRU Multi channel, can solve well the indoor covering problem of large stadium.RRU and BBU bear respectively Radio frequency Processing Unit, RF Processing Unit and the Base-Band Processing part of base station, and independent installation, separated separately, is connected by electrical interface or optical interface, forms distributed base station form.
RRU technical characterstic is that base station is divided into near-end machine is radio base band control (RadioServer, be called for short RS) and remote termination (being RRU) two parts, between the two, connect by optical fiber, its interface is based on open general radio interface (The Common Public RadioInterface, be called for short CPRI) interface, can stably be connected with mainstream vendor's equipment.RS can be arranged on suitable Host equipment room, and RRU is arranged on antenna end, and a RS can connect several RRU, like this, just a part for existing base station module is separated.By RS is separated with RRU, loaded down with trivial details maintenance work can be simplified to RS end.
But existing BBU+RRU framework is only supported a kind of communication standard, can not support multiple communication standard, if use the BBU that supports multi-communication standard, need original existing network main control unit to replace with the main control unit of supporting multi-communication standard, and need the above-mentioned networking model of corresponding modify, cost cost is larger.
Summary of the invention
Embodiments of the invention technical problem to be solved is to provide a kind of wireless communications method and distributed base station system, can not change under the prerequisite of existing networking model, realizes the multi-communication standard support function of BBU.
For solving the problems of the technologies described above, embodiments of the invention adopt following technical scheme:
A kind of wireless communications method, comprising:
Send to second of at least one RRU to control data the BBU of second communication standard, be converted to the data splitting of class CPRI type, and by class CPRI passage, described data splitting is sent to the BBU of the first communication standard, wherein, described in each frame, the second control data comprise IQ part and control word part;
The described data splitting that the BBU of described the first communication standard is received, revert to described second and control data, and control data by described second, need to send to first of described at least one RRU to control data with the BBU self of described the first communication standard, send to described at least one RRU by CPRI passage, so that described at least one RRU supports the data uplink of the first communication standard and second communication standard and/or descending.
A kind of distributed base station system, is characterized in that, comprising: the BBU of the first communication standard, the BBU of second communication standard and at least one RRU, and the BBU of described the first communication standard is connected by optical fiber with described at least one RRU, wherein,
The BBU of second communication standard comprises:
Mapping block, for the BBU of second communication standard being sent to second of at least one wireless extension unit RRU control data, is converted to the data splitting of class CPRI type;
The second sending module, for described data splitting being sent to by class CPRI passage to the BBU of the first communication standard, wherein, second controls data and comprises IQ part and control word part described in each frame;
The BBU of the first communication standard comprises:
Receiver module, the described data splitting sending for receiving the BBU of described second communication standard;
Demapping module, for by the described data splitting receiving, reverts to described second and controls data;
The first sending module, for controlling data by described second, need to send to first of described at least one RRU to control data with the BBU self of described the first communication standard, send to described at least one RRU by CPRI passage, so that described at least one RRU supports the data uplink of the first communication standard and second communication standard and/or descending.
The wireless communications method of the embodiment of the present invention and distributed base station system, the BBU of second communication standard passes through the second control data-mapping in class CPRI passage, form data splitting, and by class CPRI passage, data splitting is sent to again to the BBU of the first communication standard, the BBU of the first communication standard again by data splitting demapping out, revert to the second control data, can not change under the prerequisite of existing networking model, realize the multi-communication standard support function of BBU, break through the connection restriction between the BBU groove position of each communication standard, reduce networking cost.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of BBU+RRU framework in prior art.
Fig. 2 is the schematic flow sheet of the data transmission method based on CPRI in the embodiment of the present invention;
Fig. 3 is the communication scheme of BBU and RRU in the embodiment of the present invention;
Fig. 4 is the schematic diagram of Frame in class CPRI agreement in the embodiment of the present invention;
Fig. 5 be in the embodiment of the present invention data-mapping in CPRI passage to the schematic diagram of class CPRI passage;
Fig. 6 is the schematic diagram of class CPRI passage in the embodiment of the present invention;
Fig. 7 is one of schematic diagram of the data demapping in class CPRI passage in the embodiment of the present invention;
Fig. 8 be the data demapping in class CPRI passage in the embodiment of the present invention schematic diagram two;
This is one of distributed base station system schematic diagram in inventive embodiments for Fig. 9;
Figure 10 be in the embodiment of the present invention distributed base station system schematic diagram two.
Embodiment
The embodiment of the present invention provides a kind of data transmission method, baseband processing unit and communication system based on CPRI, can not change under the prerequisite of existing networking model, realizes the multi-communication standard support function of BBU.
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.In below describing, in order to illustrate instead of in order limiting, to have proposed the detail such as particular system structure, interface, technology, understand the present invention to thoroughly cut.But, it will be clear to one skilled in the art that and in other embodiment that there is no these details, also can realize the present invention.In other situation, omit the detailed description to well-known device, circuit and method, in order to avoid unnecessary details hinders description of the invention.
Various technology described herein can be used for various wireless communication systems, for example current 2G, 3G communication system and next generation communication system, for example global system for mobile communications (Global Systemfor Mobile communications, be called for short GSM), code division multiple access (Code DivisionMultiple Access, be called for short CDMA) system, time division multiple access (Time Division MultipleAccess, be called for short TDMA) system, Wideband Code Division Multiple Access (WCDMA) (Wideband Code DivisionMultiple Access Wireless, be called for short WCDMA), frequency division multiple access (Frequency DivisionMultiple Addressing, be called for short FDMA) system, OFDM (OrthogonalFrequency-Division Multiple Access, be called for short OFDMA) system, Single Carrier Frequency Division Multiple Access (SC-FDMA) system, GPRS (General Packet Radio Service, be called for short GPRS) system, Long Term Evolution (Long Term Evolution, be called for short LTE) system, and other these type of communication systems.
Term " system " and " network " are often used interchangeably in this article herein.Term "and/or" herein, is only a kind of incidence relation of describing affiliated partner, and expression can exist three kinds of relations, and for example, A and/or B, can represent: individualism A exists A and B, these three kinds of situations of individualism B simultaneously.In addition, character "/" herein, generally represents that forward-backward correlation is to liking a kind of relation of "or".
The method of the present embodiment is based on the general radio interface data transmission method of (The Common Public RadioInterface is called for short CPRI).At present, CPRI has been widely used in wireless communication system, and CPRI adopts digital mode to carry out transmission base band, and its digital interface has two kinds: standard CPR I interface and OBSAI interface.CPRI has defined base station data processing and control element (PCE) (Radio Equipment Control, be called for short REC) and base station transceiver unit (RadioEquipment, be called for short RE) between interface relationship, its data structure can be directly used in far-end transmission, becomes a kind of far-drawing system of base station.
Existing networking model is: the master control of each communication standard is respectively by baseband processing unit (Base Band Unit separately, be called for short BBU) communicate with base station, the method of the present embodiment, under the prerequisite of original networking model, connects the BBU of each communication standard by class CPRI.But also there is a difficult problem in said method, owing to only having 1-3 interconnecting channels between two BBU, and base station of the every docking of BBU, for example, RRU, just need to take a docking passage between two communication standards, obviously, generally, RRU quantity is much larger than 3, therefore, how to break through above-mentioned groove position and connect restriction, become the problem that following methods of the present invention is focused on solving.
The present embodiment provides a kind of wireless communications method, and as shown in Figure 2, the method comprises:
Step 101, by the baseband processing unit of second communication standard (BBU) send at least one wireless extension unit RRU second control data, be converted to the data splitting of class CPRI type, and by class CPRI passage, described data splitting is sent to the BBU of the first communication standard, wherein, described in each frame, the second control data comprise IQ part and control word part.
The BBU of the first communication standard can pass through CPRI passage directly and each wireless extension unit (Radio Remote Unit, be called for short RRU) communicate, but when the BBU of second communication standard and each RRU communicate, must be through the BBU of " terminal "-first communication standard.The BBU of the first communication standard is connected by class CPRI with the BBU of second communication standard, and uses a kind CPRI agreement.Class CPRI agreement refers to that those skilled in the art are according to actual needs improved agreement on CPRI protocol basis.Wherein, the first communication standard and second communication standard can be global system for mobile communications (Global System for Mobilecommunications, be called for short GSM), universal mobile telecommunications system (Universal MobileTelecommunications System, be called for short UMTS), code division multiple access system (the Time Division-Synchronous Code Division Multiple Access that time-division is synchronous, be called for short TDS-CDMA), CDMA 2000 system (Code Division Multiple Access 2000, be called for short CDMA2000) and LTE system etc., but be not limited to this.
It should be noted that, the BBU of the present embodiment and RRU all continue to use BBU and the RRU under existing networking model, except the BBU of second communication standard is connected this part with the BBU of the first communication standard, other functions are all existing BBU and the existing function of RRU, do not repeat them here.
As shown in Figure 3, the master control of second communication standard sends second and controls the BBU of data to second communication standard, because the BBU of the first communication standard and the BBU of second communication standard are connected by class CPRI, therefore the BBU of the first communication standard first needs the second control data to be converted to the data splitting of class CPRI type, so that can receive this data splitting.Exemplary, the number of RRU is 6, the number of the class CPRI passage between the BBU of the first communication standard and the BBU of second communication standard is 3.The RRU of the first communication standard receives from second of the master control of second communication standard and controls data, wherein, second controls data taking frame as unit, each frame first data comprises IQ part and control word part, as shown in Figure 4, every frame data are divided into 16 row, first row ash color part be the control word information of class CPRI, 2～16 classify the IQ part of class CPRI as.Wherein the carrying of control word part is the information of class CPRI passage chain of command, and what IQ part was carried is the business datum of communication standard.
The BBU of second communication standard need to transmit by three interconnected class CPRI passages control word and the IQ data of 6 CPRI passages to the BBU of the first communication standard.Due under different speed, the data volume of CPRI and the every row of class CPRI is inconsistent, for example, when 9.8304G wire rate, every column data has 128bit, when 3.072G wire rate, every column data has 40bit, therefore, the BBU of second communication standard is receiving after the second control data, need to the data-mapping of the control word part of CPRI passage and IQ part be arrived to class CPRI by special mode.
Starting before mapping, also need definition several configuration parameters below:
1, due in the communication process of the present embodiment, the IQ data of the first communication standard and the IQ data of second communication standard need to be closed on the CPRI passage of road to and be sent to RRU, therefore the IQ data of second communication standard are not need to be all mapped on class CPRI passage, so that slot milling is given the BBU of the first communication standard.Therefore, the data of IQ part that need to regulation second communication standard start mapping wherefrom, configure the map source address of CPRI passage;
2, owing to there being 3 class CPRI passages, so need the initial class CPRI row number of No. CPRI, initial class, mapping of specified data mapping and the mapping length on class CPRI passage.
Complete after above-mentioned work, as shown in Figure 5, the BBU of second communication standard, according to the configuration parameter setting, extracts valid data and the control word part of the first data IQ part, and the valid data of extraction and control word part are arranged in order to the second middle buffer memory.In addition, above-mentioned configuration parameter is to be arranged by the master control of second communication standard.
Next, as shown in Figure 5, the BBU of second communication standard extracts the data in buffer memory in the middle of second according to the wire rate of class CPRI passage, and by the IQ part of the data of data stuffing to the three class CPRI passage in the second middle buffer memory, forms data splitting.The IQ part of visible data splitting had not only comprised the second control word part of controlling data, but also had comprised the second data of controlling the IQ part of data.So far, the data-mapping of the control word part of the second control data and IQ part is completed to the work of class CPRI.
Fig. 6 is 3 docking class CPRI passages between the data of the first communication standard and second communication standard, the control word part of the part representation class CPRI passage of high order end grey, control word and the IQ data message of 6 CPRI passages of the IQ part field carrying of remaining representation class CPRI, together with wherein the control word of any CPRI passage is all close-packed arrays with IQ data.
After having shone upon, the BBU of second communication standard is sent to data splitting by class CPRI passage the BBU of the first communication standard.
Step 102, the described data splitting that the BBU of described the first communication standard is received, revert to described second and control data, and control data by described second, need to send to first of described at least one RRU to control data with the BBU self of described the first communication standard, send to described at least one RRU by CPRI passage, so that described at least one RRU supports the data uplink of the first communication standard and second communication standard and/or descending.
After the described data splitting that the BBU of the first communication standard receives, first reverted to the second control data.
Exemplary, as shown in Figure 7 and Figure 8, the process that the BBU of the first communication standard carries out demapping comprises:
The BBU of the first communication standard extracts the data of the IQ part of described data splitting, and described IQ part is arranged in order to the first middle buffer memory;
Data in the middle of the BBU of the first communication standard extracts according to the wire rate of CPRI passage in buffer memory, and by the data stuffing in buffer memory in the middle of described first the IQ part to the data of CPRI passage, form second and control data.
In the process of demapping, the parameter defining in above-mentioned mapping process is still effective, therefore, after demapping completes, the data that can reduce completely in class CPRI passage according to the parameter of configuration, as shown in Figure 8.
Obtain after the second control data in recovery, the BBU of the first communication standard controls data by described second, need to send to first of described at least one RRU to control data with the BBU self of described the first communication standard, send to described at least one RRU by CPRI passage, so that described at least one RRU supports the data uplink of the first communication standard and second communication standard and/or descending.First to control data are the BBU that sent to the first communication standard by the master control of the first communication standard, and now, the IQ data of the first communication standard and the IQ data of second communication standard are closed on the CPRI passage of road to and sent to RRU.
It should be noted that; above-described embodiment describes as an example of two communication standards example; method of the present invention is also applicable to more than three and three communicating by letter between communication standard and RRU, and its principle is same as the previously described embodiments, all within protection scope of the present invention.The applicable communication standard of the present invention has GSM, UMTS, TDS-CDMA, CDMA2000, LTE etc.
The wireless communications method of the present embodiment, the BBU of second communication standard passes through the second control data-mapping in class CPRI passage, form data splitting, and by class CPRI passage, data splitting is sent to again to the BBU of the first communication standard, the BBU of the first communication standard again by data splitting demapping out, revert to the second control data, can not change under the prerequisite of existing networking model, realize the multi-communication standard support function of BBU, broken through the connection restriction between the BBU groove position of each communication standard.
Embodiment is corresponding with said method, the present embodiment also provides a kind of distributed base station system, as shown in Figure 9, comprise: the BBU 1 of the first communication standard, the BBU2 of second communication standard and at least one RRU 3, the BBU 1 of described the first communication standard is connected by optical fiber with described at least one RRU3, wherein
The BBU 2 of second communication standard comprises:
Mapping block 21, for the BBU of second communication standard 2 being sent to second of at least one wireless extension unit RRU 3 control data, is converted to the data splitting of class CPRI type;
The second sending module 22, for described data splitting being sent to by class CPRI passage to the BBU 1 of the first communication standard, wherein, second controls data and comprises IQ part and control word part described in each frame;
The BBU 1 of the first communication standard comprises:
Receiver module 11, the described data splitting sending for receiving the BBU 2 of described second communication standard;
Demapping module 12, for by the described data splitting receiving, reverts to described second and controls data;
The first sending module 13, for controlling data by described second, need to send to first of described at least one RRU to control data with the BBU self of described the first communication standard, send to described at least one RRU by CPRI passage, so that described at least one RRU supports the data uplink of the first communication standard and second communication standard and/or descending.
Further, described mapping block 21 specifically for:
Extract described second and control valid data and the control word part of the IQ part of data, and described valid data and control word part are arranged in order to the second middle buffer memory, and,
Extract the data in buffer memory in the middle of described second according to the wire rate of class CPRI passage, and by the extremely IQ part of the data of described class CPRI passage of data stuffing in the described second middle buffer memory, form the second combination and control data.
Further, described demapping module 12 specifically for:
Extract the data that the IQ part of data is controlled in described the second combination, and described the second data after extracting are arranged in order to the first middle buffer memory, and,
Extract the data in buffer memory in the middle of described first according to the wire rate of CPRI passage, and by extremely IQ part and the control word part of the data of described CPRI passage of the data stuffing in the described first middle buffer memory, form second and control data.
As shown in figure 10, further, distributed base station system also comprises: the master control 4 of the first communication standard and the master control 5 of second communication standard, described first to control data be the master control 4 of described the first communication standard BBU that sends to the first communication standard, and described second to control data be the master control 5 of the described second communication standard BBU's that sends to second communication standard.
Further, described mapping block 21 for:
Send to second of at least one wireless extension unit RRU to control data the BBU of second communication standard according to configuration parameter, be converted to the data splitting of class CPRI type, described configuration parameter comprises: the initial class CPRI row of No. CPRI, the initial class of the map source address of CPRI passage, the data-mapping of CPRI passage, mapping number and the mapping length on class CPRI passage.
Those skilled in the art can be well understood to, for convenience and simplicity of description, only be illustrated with the division of above-mentioned each functional module, in practical application, can above-mentioned functions be distributed and completed by different functional modules as required, be divided into different functional modules by the internal structure of device, to complete all or part of function described above.The system of foregoing description, the specific works process of device and unit, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.
In the several embodiment that provide in the application, should be understood that, disclosed system, apparatus and method, can realize by another way.For example, device embodiment described above is only schematic, for example, the division of described module or unit, be only that a kind of logic function is divided, when actual realization, can have other dividing mode, for example multiple unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.
The described unit as separating component explanation can or can not be also physically to separate, and the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in multiple network element.Can select according to the actual needs some or all of unit wherein to realize the object of the present embodiment scheme.
In addition, the each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit exists, and also can be integrated in a unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, and also can adopt the form of SFU software functional unit to realize.
If described integrated unit is realized and during as production marketing independently or use, can be stored in a computer read/write memory medium using the form of SFU software functional unit.Based on such understanding, the all or part of of the part that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions (can be personal computers in order to make a computer equipment, server, or the network equipment etc.) or processor (processor) carry out all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), the various media that can be program code stored such as random access memory (RAM, Random AccessMemory), magnetic disc or CD.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (10)
1. a wireless communications method, is characterized in that, comprising:
Send to second of at least one wireless extension unit (RRU) to control data the baseband processing unit of second communication standard (BBU), be converted to the data splitting of class CPRI type, and by class CPRI passage, described data splitting is sent to the BBU of the first communication standard, wherein, described in each frame, the second control data comprise IQ part and control word part;
The described data splitting that the BBU of described the first communication standard is received, revert to described second and control data, and control data by described second, need to send to first of described at least one RRU to control data with the BBU self of described the first communication standard, send to described at least one RRU by CPRI passage, so that described at least one RRU supports the data uplink of the first communication standard and second communication standard and/or descending.
2. wireless communications method according to claim 1, is characterized in that, the described BBU by second communication standard sends to the second control data of at least one wireless extension unit RRU to be converted to the data splitting of class CPRI type, comprising:
Extract described second and control valid data and the control word part of the IQ part of data, and described valid data and control word part are arranged in order to the second middle buffer memory;
Extract the data in buffer memory in the middle of described second according to the wire rate of class CPRI passage, and by the extremely IQ part of the data of described class CPRI passage of data stuffing in the described second middle buffer memory, form described data splitting.
3. wireless communications method according to claim 1, is characterized in that, the described described data splitting that the BBU of described the first communication standard is received reverts to described second and controls data, comprising:
Extract the data of the IQ part of described data splitting, and the second data after extracting are arranged in order to the first middle buffer memory;
Extract the data in buffer memory in the middle of described first according to the wire rate of CPRI passage, and by extremely IQ part and the control word part of the data of described CPRI passage of the data stuffing in the described first middle buffer memory, form described second and control data.
4. wireless communications method according to claim 1, is characterized in that, described second to control data be the master control of the second communication standard BBU's that sends to second communication standard.
5. wireless communications method according to claim 1, is characterized in that, the described BBU by second communication standard sends to second of at least one wireless extension unit RRU to control data, is converted to the data splitting of class CPRI type, is specially:
Send to second of at least one wireless extension unit RRU to control data the BBU of second communication standard according to configuration parameter, be converted to the data splitting of class CPRI type, described configuration parameter comprises: the initial class CPRI row of No. CPRI, the initial class of the map source address of CPRI passage, the data-mapping of CPRI passage, mapping number and the mapping length on class CPRI passage.
6. a distributed base station system, is characterized in that, comprising: the BBU of the first communication standard, the BBU of second communication standard and at least one RRU, and the BBU of described the first communication standard is connected by optical fiber with described at least one RRU, wherein,
The BBU of second communication standard comprises:
Mapping block, for the BBU of second communication standard being sent to second of at least one wireless extension unit RRU control data, is converted to the data splitting of class CPRI type, and wherein, second controls data and comprise IQ part and control word part described in each frame;
The second sending module, for being sent to described data splitting by class CPRI passage the BBU of the first communication standard;
The BBU of the first communication standard comprises:
Receiver module, the described data splitting sending for receiving the BBU of described second communication standard;
Demapping module, for by the described data splitting receiving, reverts to described second and controls data;
The first sending module, for controlling data by described second, need to send to first of described at least one RRU to control data with the BBU self of described the first communication standard, send to described at least one RRU by CPRI passage, so that described at least one RRU supports the data uplink of the first communication standard and second communication standard and/or descending.
7. distributed base station system according to claim 6, is characterized in that, described mapping block specifically for:
Extract described second and control valid data and the control word part of the IQ part of data, and described valid data and control word part are arranged in order to the second middle buffer memory, and,
Extract the data in buffer memory in the middle of described second according to the wire rate of class CPRI passage, and by the extremely IQ part of the data of described class CPRI passage of data stuffing in the described second middle buffer memory, form the second combination and control data.
8. distributed base station system according to claim 6, is characterized in that,
Described demapping module specifically for:
The data of the IQ part of data are controlled in extraction the second combination, and the second data after extracting are arranged in order to the first middle buffer memory, and,
Extract the data in buffer memory in the middle of described first according to the wire rate of CPRI passage, and by extremely IQ part and the control word part of the data of described CPRI passage of the data stuffing in the described first middle buffer memory, form second and control data.
9. distributed base station system according to claim 6, it is characterized in that, also comprise: the master control of the master control of the first communication standard and second communication standard, described first to control data be the master control of described the first communication standard BBU that sends to the first communication standard, and described second to control data be the master control of the described second communication standard BBU's that sends to second communication standard.
10. distributed base station system according to claim 6, is characterized in that, described mapping block is used for:
Send to second of at least one wireless extension unit RRU to control data the BBU of second communication standard according to configuration parameter, be converted to the data splitting of class CPRI type, described configuration parameter comprises: the initial class CPRI row of No. CPRI, the initial class of the map source address of CPRI passage, the data-mapping of CPRI passage, mapping number and the mapping length on class CPRI passage.
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| CN110769416A (en) * | 2018-07-27 | 2020-02-07 | 上海华为技术有限公司 | Communication method, device, system and readable storage medium |
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