CN101677287B - Data transmission method and DSL multi-service chip set - Google Patents
Data transmission method and DSL multi-service chip set Download PDFInfo
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- CN101677287B CN101677287B CN2008102113174A CN200810211317A CN101677287B CN 101677287 B CN101677287 B CN 101677287B CN 2008102113174 A CN2008102113174 A CN 2008102113174A CN 200810211317 A CN200810211317 A CN 200810211317A CN 101677287 B CN101677287 B CN 101677287B
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Abstract
The embodiment of the invention discloses a data transmission method and a DSL multi-service chip set, which are applied to a chip set comprising a PHY function module and an MAC function module. The method comprises the following steps: the MAC function module carries out different packet processing on pre-sent data according to service types to obtain data messages of different service types; the PHY function module receives the data messages of different service types sent by the MAC function module; and the PHY function module carries out the same transmission convergence sub-layer processing on the data messages of different service types. By the method provided by the embodiment of the invention, the internal structure of the chip set can be simplified, and the cost can be reduced.
Description
Technical field
The present invention relates to communication field, relate in particular to a kind of method and DSL multi-service nest plate of transfer of data.
Background technology
DSL (Digital Subscriber Line, Digital Subscriber Line) technology is a kind of twisted pair telephone that passes through, be UTP (Unshielded Twist Pair, unshielded twisted pair) carry out the high speed transmission technology of transfer of data, comprise ADSL (Asymmetrical Digital Subscriber Line, ADSL (Asymmetric Digital Subscriber Line)), VDSL (Very high speed Digital Subscriber Line, Very-high-speed Digital Subscriber Line) etc.The DSL technology is clear and definite from the beginning, and different business adopts different bearing modes, because itself there is a plurality of technology branch in the DSL technology, in order to make equipment possess enough flexibilities and extensibility, the conception of ADSL, VDSL compatibility has been proposed, this just needs the support of DSL nest plate.Because present ADSL/ADSL2/ADSL2_ adopts ATM (Asynchronous Transfer Mode more, asynchronous communication) unit transmits, and VDSL/VDSL2 adopts PTM (Packet Transfer Mode more, the grouping transmission) unit transmits, the DSL relevant criterion has also proposed STM (Synchronous Transfer Mode, synchronous driving) transmission mode, so the DSL nest plate need to be supported above-mentioned three kinds of transmission modes at least.
The DSL nest plate comprises MAC (Media Access Control, media access control) chip and PHY (Physical, physical layer) chip, wherein the MAC chip is completed the function such as classification, user management, flow control, forwarding of stream, and the PHY chip is the function such as the converging of finishing service, rate adapted, modulation /demodulation.
MAC chip and physical chip in the DSL nest plate all provide multiple transmission mode, not only the MAC chip provides multiple processing procedure, the PHY chip also provides different transmission convergence sublayer to adapt to the different business forms, usually different transmission modes need to be used different interfaces, when realizing, these interfaces can share identical pin to reduce the nest plate cost, when needs carry different business, nest plate is done corresponding configuration can activate corresponding interface form.As shown in Figure 1, on the basis of above-mentioned prior art, all increase a protocol adaptor at the two ends of MAC/PHY interface, adopted unified interface form to carry out the transmission of different business.This protocol adaptor carries out same encapsulation for different business, and identifies different business by configuration or mark, can reduce the nest plate cost because interface is simplified limitedly.
The inventor finds that there is following problem at least in prior art in realizing process of the present invention:
In prior art, MAC chip and the inside of PHY chip need to provide different business different transmission convergence sublayers to process, the more complicated cost that is unfavorable for reducing the DSL nest plate of internal structure.
Summary of the invention
The embodiment of the present invention provides a kind of method and DSL multi-service nest plate of transfer of data, can the facilitating chip internal structure, reduce costs.
The embodiment of the present invention provides a kind of method of transfer of data, be applied to comprise in the digital user wire DSL nest plate of physical layer PHY functional module and media access control MAC functional module, MAC chip and PHY chip in described DSL nest plate provide multiple transmission mode, comprising:
The MAC functional module is carried out different bags according to type of service to the data of pre-transmission and is processed the data message that obtains different service types;
The PHY functional module receives the data message of the different service types of described MAC functional module transmission;
Described PHY functional module is carried out identical transmission convergence sublayer processing to the data message of described different service types.
The embodiment of the present invention also provides a kind of method of transfer of data, be applied to comprise in the digital user wire DSL nest plate of physical layer PHY functional module and media access control MAC functional module, MAC chip and PHY chip in described DSL nest plate provide multiple transmission mode, comprising:
PHY functional module receive data and demodulation from the data transmission link, to demodulate data based under type of service carry out the data message that corresponding transmission convergence sublayer is processed the different service types that obtains;
The message of the different service types after the processing that the described PHY functional module of MAC functional module reception sends;
The MAC functional module is carried out unified processing to described message, and with the data retransmission that recovers to destination device.
Simultaneously, the embodiment of the present invention provides a kind of digital user wire DSL multi-service nest plate, comprise physical layer PHY functional module and media access control MAC functional module, MAC chip and PHY chip in described DSL nest plate provide multiple transmission mode, and described PHY functional module comprises:
The first network interface unit is used for communicating with the interface of described MAC functional module, receives the data message of the different service types of described MAC functional module transmission; Maybe will receive data message from data transmission link and issue described MAC functional module;
The first line interface unit is used for communicating with the interface of data transmission link, and the data that needs are transferred to send, or receive data from described data transmission link;
The first data processing unit, the data message that is used for different service types that described first network interface unit is received carries out identical transmission convergence sublayer to be processed, and the data after processing send on data transmission link by modulation;
Described MAC functional module comprises:
The second network interface unit is used for communicating with the interface of described PHY functional module, data message is sent to the PHY functional module or receives from the PHY functional module with unified encapsulation format belong to the identical data message of different service types encapsulation format;
The second message process unit is used for providing the sending and receiving of one or more type services to process, and exports or input by described second network interface unit with unified packaged type.
Simultaneously, the embodiment of the present invention also provides another kind of digital user wire DSL multi-service nest plate, comprise physical layer PHY functional module and media access control MAC functional module, MAC chip and PHY chip in described DSL nest plate provide multiple transmission mode, and described MAC functional module comprises:
The 4th network interface unit is used for communicating with the interface of described PHY functional module, receives the data message that belongs to the different service types encapsulation format that described PHY functional module sends;
The 4th message process unit, be used for providing single bag processing mode to the data message that described the 4th network interface unit receives, and export by the 4th network interface unit with unified packaged type, or receive from the data message of the 4th network interface unit input;
Described PHY functional module comprises:
The 3rd network interface unit is used for communicating with the interface of described MAC functional module, the data message of the different service types of the unified encapsulation of process of reception MAC functional module output; Maybe will export to the MAC functional module from the data message that data transmission link receives;
The tertiary circuit interface unit is used for communicating with the interface of data transmission link, and the data that will be transferred to the opposite end modem device send; Or the data of reception opposite end modem device transmission;
The 3rd data processing unit, the type of service under the data message that is used for receiving according to described the 3rd network interface unit carry out different transmission convergence sublayers to described data message to be processed; And the data after processing are through sending to after ovennodulation on data transmission link; Be used for the data that described tertiary circuit interface unit receives are carried out demodulation, and the data based affiliated type of service of exporting after demodulation carried out the respective transmissions convergence sub-layer process, and extract the data message of unified encapsulation.
Compared with prior art, the embodiment of the present invention has the following advantages:
Method by the embodiment of the present invention provides is irrelevant with type of service with a chip design in MAC chip and PHY chip, thereby simplifies the design of nest plate, reduces equipment cost.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is DSL nest plate structural representation in prior art;
Fig. 2 is the method flow diagram of transfer of data in the embodiment of the present invention;
Fig. 3 is the method flow diagram of transfer of data in another embodiment of the present invention;
Fig. 4 is DSL nest plate structural representation in the embodiment of the present invention;
Fig. 5 is DSL nest plate structural representation in another embodiment of the present invention;
Fig. 6 is the schematic diagram of a kind of DSL multi-service nest plate in the embodiment of the present invention;
Fig. 7 is the schematic diagram of a kind of DSL multi-service nest plate in another embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The embodiment of the present invention provides a kind of method and DSL multi-service nest plate of transfer of data, can the facilitating chip internal structure, reduce costs.
Method and the DSL multi-service nest plate of the transfer of data that the embodiment of the present invention is provided below in conjunction with the drawings and specific embodiments are elaborated.
The embodiment of the present invention provides a kind of method of transfer of data, is applied to comprise in the nest plate of PHY functional module and MAC functional module, as shown in Figure 2, comprising:
Step s201, MAC functional module are carried out different bags according to type of service to the data of pre-transmission and are processed the data message that obtains different service types; Concrete, the MAC functional module is carried out corresponding Business Processing (as ATM, PTM, STM) according to the type of service of data, and the data message that then processing is obtained uses unified encapsulation format to send to the PHY functional module;
Step s202, PHY functional module receive the data message of the different service types of described MAC functional module transmission;
Step s203, described PHY functional module are carried out identical transmission convergence sublayer processing to the data message of described different service types; The type of service of the data message that PHY functional module nonrecognition MAC functional module sends is used the predetermined single ethod of remittance to carry out transmission convergence sublayer to the data message and is processed, then will send on data transmission link through the data after ovennodulation and transmit.
In the data receiver direction, the PHY functional module receives the signal that sends by data transmission link, and demodulation is transmitted data, then carries out with data receiver to the opposite processing of the process of converging, the data message that extracts being sent to the MAC functional module with the identical ethod of remittance; After the MAC functional module receives above-mentioned data message, carry out corresponding Business Processing according to the type of service of data message.
By above-mentioned steps, the PHY functional module is carried out identical bag processing to the packet of different service types, has simplified preferably the internal structure of PHY functional module, and has reduced cost.
Another embodiment of the present invention provides a kind of method of transfer of data, is applied to comprise in the nest plate of PHY functional module and MAC functional module, as shown in Figure 3, comprising:
Step s301, PHY functional module receive data and demodulation from the data transmission link, to demodulate data based under type of service carry out the data message that corresponding transmission convergence sublayer is processed the different service types that obtains; The PHY functional module receives from data transmission link and exports the signal that comes and demodulate the data that are transmitted, and carries out different transmission convergence sublayer processing procedures according to the type of service of these data, then the data message that obtains is sent to the MAC functional module; Transmission convergence sublayer processing herein comprises one or more in the processing of synchronous transmission convergence sub-layer, the processing of synchronous transmission convergence sub-layer and the processing of transmitted in packets convergence sub-layer, and for example the PHY functional module can will send to the MAC functional module after the processing of these data by asynchronous communication ATM transmission convergence sublayer;
The message of the different service types after the processing that step s302, the described PHY functional module of MAC functional module reception send;
Step s303, MAC functional module are carried out unified processing to described message, and with the data retransmission that recovers to destination device.The packet that the MAC functional module sends the PHY functional module does not carry out type of service to be distinguished, and completes corresponding MAC layer according to predetermined processing mode and processes, and then sends to destination device.
Data receiver to, the data that the MAC functional module will need to send send to the PHY functional module with unified message mode; The type of service of MAC functional module nonrecognition data message is carried out identical bag according to default bag processing mode to the data message and is processed, and then uses unified encapsulation format to send to the PHY functional module data message that obtains; After the PHY functional module receives this data message, according to the type of service of data message, carry out corresponding transmission convergence sublayer and process, then will send on data transmission link through the data after ovennodulation and transmit;
By above-mentioned steps, the MAC functional module is carried out same treatment to the message of different service types, has simplified the structure of MAC chip, has saved the cost of chip.
Simplified the internal structure of a chip in the nest plate in above two embodiment, the process that data are processed simplified more, and larger saving cost.
The below is elaborated to the method for a kind of transfer of data that the embodiment of the present invention provides, with the chip of a chip design in MAC chip and PHY chip for processing according to the type of business, and another chip design is irrelevant with the type of business, not only reduce thus the complexity of nest plate interface, also simplify simultaneously the structure of one of them chip, reduced the nest plate cost.
The method of a kind of DSL of the realization multi-service nest plate that the embodiment of the present invention is provided below by specific embodiment is elaborated.
As shown in Figure 4, be that a data message to different service types carries out the chip that identical transmission convergence sublayer is processed with the PHY chip design, namely the PHY chip is only processed the data message that receives based on byte, and need not to support for example can only carry out 64/65 byte codeword encapsulation by the IEEE802.361.3.3.1 byte by a plurality of different host-host protocols.The MAC chip still needs the processing unit that provides different, comprise STM processing unit, ATM processing unit and PTM processing unit, exit at these processing units increases a protocol adaptor, the consolidation form of the data after the different disposal resume module is encapsulated, for example can encapsulate by ethernet frame format, and identify the port of data or the type of data flow by data target MAC (Media Access Control) address or VLAN ID (Virtual Local Area Network, VLAN) etc.Adopt single interface form, for example gmii interface or SGMII interface between MAC chip and PHY chip.When the PHY chip is processed the data message of MAC chip transmission, the PHY chip no longer carries out different convergence processing for different business, but use a convergence sub-layer (Transport Protocol Independent-Transmission Convergence, TPI-TC) that has nothing to do with host-host protocol to carry out identical processing to different business.During this convergence sub-layer deal with data message, can select various ways to converge and rate adapted.After convergence sub-layer is disposed, carry out the processing of PMS-TC sublayer and PMD sublayer, do not repeat them here.
As shown in Figure 5, the PHY chip carries out corresponding message according to type of service to be processed, and this type of service comprises STM, ATM and PTM; And the MAC chip need not to carry out different Business Processing for different business, but realizes its MAC layer function, even can be reduced to a switch LanSwitch chip and substitute.In above-mentioned situation, the PHY chip still needs the transmission convergence sublayer that provides different, comprises STM-TC, ATM-TC and PTM-TC, but increases protocol adaptor in the porch of these convergence sub-layer modules, so that the PHY chip externally provides unified interface.Adopt single interface form between MAC chip and PHY chip, the interface form can be gmii interface or SGMII interface.Because the MAC chip can adopt single bag processing mode, so can replace with general chips of Ethernet exchange the MAC chip in many instances, greatly reduce thus the cost of MAC.And in the PHY chip, protocol adaptor as ethernet frame, identifies the type of service of message according to the sign that the message of inputting carries, and message is distributed to different convergence sub-layer modules processes.
The embodiment of the present invention also provides a kind of DSL multi-service nest plate, as shown in Figure 6, comprises PHY functional module 100 and MAC functional module 200;
PHY functional module 100 comprises:
First network interface unit 101 is used for communicating with the interface of described MAC functional module 200, receives the data message of the different service types of described MAC functional module 200 transmissions; Maybe will receive data message from data transmission link and issue described MAC functional module 200;
The first line interface unit 102 is used for communicating with the interface of data transmission link, and the data that needs are transferred to send, or receive data from described data transmission link;
The first data processing unit 103, the data message that is used for different service types that described first network interface unit 101 is received carries out identical transmission convergence sublayer to be processed, and the data after processing send on data transmission link by modulation.
This first data processing unit 103 also is used for the data that described the first line interface unit 102 receives are carried out demodulation, and with the data of exporting after demodulation, extracts the data message of unified encapsulation after processing by identical transmission convergence sublayer.
Described MAC functional module 200 comprises:
Second network interface unit 201, be used for communicating with the interface of described PHY functional module 100, data message sent to PHY functional module 100 or receives from PHY functional module 100 with unified encapsulation format belong to the identical data message of different service types encapsulation format;
The second message process unit 202 is used for providing the sending and receiving of one or more type services to process, and exports or input by described second network interface unit with unified packaged type.
By said apparatus, PHY functional module internal structure is simplified, and the MAC functional module remains unchanged, and has reduced the cost of equipment when realizing the multi-service nest plate.
The embodiment of the present invention also provides a kind of DSL multi-service nest plate, as shown in Figure 7, comprises PHY functional module 300 and MAC functional module 400;
Described MAC functional module 400 comprises:
The 4th network interface unit 401 is used for communicating with the interface of described PHY functional module 300, receives the data message that belongs to the different service types encapsulation format that described PHY functional module 300 sends;
The 4th message process unit 402, be used for providing single bag processing mode to the data message that described the 4th network interface unit 401 receives, and export by the 4th network interface unit 401 with unified packaged type, or receive from the data message of the 4th network interface 401 unit inputs.
Above-mentioned the 4th message process unit 402 also is used for data message is sent to PHY functional module 300 with unified encapsulation format.
This PHY functional module 300 comprises:
The 3rd network interface unit 301 is used for communicating with the interface of described MAC functional module 400, the data message of the different service types of the unified encapsulation of process of reception MAC functional module output; Maybe will export to MAC functional module 400 from the data message that data transmission link receives;
Tertiary circuit interface unit 302 is used for communicating with the interface of data transmission link, and the data that will be transferred to the opposite end modem device send; Or the data of reception opposite end modem device transmission;
The 3rd data processing unit 303, the type of service under the data message that is used for receiving according to described the 3rd network interface unit 301 carry out different transmission convergence sublayers to described data message to be processed; And the data after processing are through sending to after ovennodulation on data transmission link; Be used for the data that described tertiary circuit interface unit 302 receives are carried out demodulation, and the data based affiliated type of service of exporting after demodulation carried out the respective transmissions convergence sub-layer process, and extract the data message of unified encapsulation.The transmission convergence sublayer processing comprises one or more in the processing of synchronous transmission convergence sub-layer, the processing of synchronous transmission convergence sub-layer and the processing of transmitted in packets convergence sub-layer.
Method and multi-service nest plate by the embodiment of the present invention provides are designed to the nonrecognition type of service with the end in the multi-service nest plate, have simplified the nest plate global design, thereby reduce equipment cost.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
Above disclosed be only several specific embodiment of the present invention, still, the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (12)
1. the method for a transfer of data, be applied to comprise in the digital user wire DSL nest plate of physical layer PHY functional module and media access control MAC functional module, MAC chip and PHY chip in described DSL nest plate provide multiple transmission mode, it is characterized in that, comprising:
The MAC functional module is carried out different bags according to type of service to the data of pre-transmission and is processed the data message that obtains different service types;
The PHY functional module receives the data message of the different service types of described MAC functional module transmission;
Described PHY functional module is carried out identical transmission convergence sublayer processing to the data message of described different service types.
2. the method for claim 1, is characterized in that, also comprises:
PHY functional module receive data and demodulation from the data transmission link are carried out identical transmission convergence sublayer to the data that demodulate and are processed;
Described PHY functional module to MAC functional module transmission processing complete data message;
Described MAC functional module is carried out different Business Processing according to the type of service under the message that receives and is recovered described transmission data, and is forwarded to destination device.
3. the method for claim 1, is characterized in that, the data message of described different service types uses unified encapsulation format to transmit between MAC functional module and PHY functional module.
4. the method for claim 1, is characterized in that, uses single interface form between described PHY functional module and described MAC functional module.
5. the method for a transfer of data, be applied to comprise in the digital user wire DSL nest plate of physical layer PHY functional module and media access control MAC functional module, MAC chip and PHY chip in described DSL nest plate provide multiple transmission mode, it is characterized in that, comprising:
PHY functional module receive data and demodulation from the data transmission link, to demodulate data based under type of service carry out the data message that corresponding transmission convergence sublayer is processed the different service types that obtains;
The message of the different service types after the processing that the described PHY functional module of MAC functional module reception sends;
The MAC functional module is carried out unified processing to described message, and with the data retransmission that recovers to destination device.
6. method as claimed in claim 5, is characterized in that, the data message of described different service types uses unified encapsulation format to transmit between MAC functional module and PHY functional module.
7. method as claimed in claim 5, is characterized in that, uses single interface form between described PHY functional module and described MAC functional module.
8. the system of a transfer of data, be applied to comprise in the digital user wire DSL nest plate of physical layer PHY functional module and media access control MAC functional module, MAC chip and PHY chip in described DSL nest plate provide multiple transmission mode, it is characterized in that, described PHY functional module comprises:
The first network interface unit is used for communicating with the interface of described MAC functional module, receives the data message of the different service types of described MAC functional module transmission; Maybe will receive data message from data transmission link and issue described MAC functional module;
The first line interface unit is used for communicating with the interface of data transmission link, and the data that needs are transferred to send, or receive data from described data transmission link;
The first data processing unit, the data message that is used for different service types that described first network interface unit is received carries out identical transmission convergence sublayer to be processed, and the data after processing send on data transmission link by modulation;
Described MAC functional module comprises:
The second network interface unit is used for communicating with the interface of described PHY functional module, data message is sent to the PHY functional module or receives from the PHY functional module with unified encapsulation format belong to the identical data message of different service types encapsulation format;
The second message process unit is used for providing the sending and receiving of one or more type services to process, and exports or input by described second network interface unit with unified packaged type.
9. system as claimed in claim 8, it is characterized in that, described the first data processing unit also is used for the data that described the first line interface unit receives are carried out demodulation, and with the data of exporting after demodulation, extracts the data message of unified encapsulation after processing by identical transmission convergence sublayer.
10. the system of a transfer of data, be applied to comprise in the digital user wire DSL nest plate of physical layer PHY functional module and media access control MAC functional module, MAC chip and PHY chip in described DSL nest plate provide multiple transmission mode, it is characterized in that, described MAC functional module comprises:
The 4th network interface unit is used for communicating with the interface of described PHY functional module, receives the data message that belongs to the different service types encapsulation format that described PHY functional module sends;
The 4th message process unit, be used for providing single bag processing mode to the data message that described the 4th network interface unit receives, and export by the 4th network interface unit with unified packaged type, or receive from the data message of the 4th network interface unit input;
Described PHY functional module comprises:
The 3rd network interface unit is used for communicating with the interface of described MAC functional module, the data message of the different service types of the unified encapsulation of process of reception MAC functional module output; Maybe will export to the MAC functional module from the data message that data transmission link receives;
The tertiary circuit interface unit is used for communicating with the interface of data transmission link, and the data that will be transferred to the opposite end modem device send; Or the data of reception opposite end modem device transmission;
The 3rd data processing unit, the type of service under the data message that is used for receiving according to described the 3rd network interface unit carry out different transmission convergence sublayers to described data message to be processed; And the data after processing are through sending to after ovennodulation on data transmission link; Be used for the data that described tertiary circuit interface unit receives are carried out demodulation, and the data based affiliated type of service of exporting after demodulation carried out the respective transmissions convergence sub-layer process, and extract the data message of unified encapsulation.
11. system as claimed in claim 10 is characterized in that, described the 4th message process unit also is used for data message is sent to the PHY functional module with unified encapsulation format.
12. system as claimed in claim 10 is characterized in that, described different transmission convergence sublayer processing comprises one or more in the processing of synchronous transmission convergence sub-layer, the processing of synchronous transmission convergence sub-layer and the processing of transmitted in packets convergence sub-layer.
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| CN1661974A (en) * | 2004-02-25 | 2005-08-31 | 华为技术有限公司 | Equipment and method for configuring network of wide band access |
| CN101227387A (en) * | 2007-12-21 | 2008-07-23 | 中国科学院计算技术研究所 | Radio base station and media access control system and data processing method |
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| US20040165614A1 (en) * | 2003-02-24 | 2004-08-26 | Kun-Hak Lee | System for extending distance of x Digital Subscriber Line using reserved telephone line |
| CN1536792A (en) * | 2003-04-07 | 2004-10-13 | 华为技术有限公司 | Method for transmission of down common control information in tme-division duplex system |
| CN1661974A (en) * | 2004-02-25 | 2005-08-31 | 华为技术有限公司 | Equipment and method for configuring network of wide band access |
| CN101227387A (en) * | 2007-12-21 | 2008-07-23 | 中国科学院计算技术研究所 | Radio base station and media access control system and data processing method |
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