CN103002601B - Wireless network communications system and data transmission method thereof - Google Patents
Wireless network communications system and data transmission method thereof Download PDFInfo
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- CN103002601B CN103002601B CN201110278157.7A CN201110278157A CN103002601B CN 103002601 B CN103002601 B CN 103002601B CN 201110278157 A CN201110278157 A CN 201110278157A CN 103002601 B CN103002601 B CN 103002601B
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Abstract
Embodiments provide a kind of wireless network communications system and data transmission method thereof.Does the method mainly comprise: by optical fiber by REC (Radio? Equipment? Control, wireless device controls), RE (Radio? Equipment, wireless device) and switching network be interconnected, a described REC manages RE described at least one, described RE belongs to a described REC management, and between described REC and described RE, described REC communicated each other by described switching network between any two.The embodiment of the present invention solves the problem that the existing system number of plies is too much, interface is numerous and resource utilization is low.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of wireless network communications system and data transmission method thereof.
Background technology
The structure of UMTS (UniversalMobileTelecommunicationSystem, the Universal Mobile Telecommunications System) network that existing employing core net is combined with wireless access network as shown in Figure 1.Ground floor is CN (CoreNetwork, core net), and major function is to provide user and connects, manage and complete carrying to the business of user to user, is provided to the interface of external network as bearer network simultaneously.The second layer is RNC (RadioNetworkController, radio network controller), and major function is to provide mobile management, call treatment, url management and handover mechanism.Third layer is REC (RadioEquipmentControl, wireless device controls), major function is the transmitting power control etc. of the control of base station and management, Iub interface communication, the process of Iub Frame Protocol, chnnel coding and decoding, interleave and deinterleave, spread spectrum and despreading, each physical channel.4th layer is RE (RadioEquipment, wireless device), major function is the low noise amplification, rf filtering etc. of modulus and digital-to-analogue conversion, Up/Down Conversion, automatic growth control, the multiplexed and demultiplexing of carrier wave, the power amplification of downstream signal and amplitude limit, upward signal.
Plurality of layers is divided in the structure of the UMTS shown in above-mentioned Fig. 1, annexation wherein between each layer is: ground floor CN is connected by Iu interface with second layer RNC, second layer RNC is connected by Iub interface with third layer REC, third layer REC and the 4th layer RE is by CPRI (CommonPublicRadioInterface, common public radio interface) interface connects, connected by Iur interface between second layer RNC, can directly intercom mutually, separate between third layer REC, can not direct communication, communication needs to carry out transfer through RNC, also be separate between 4th layer of RE, can not direct communication, communication needs to carry out transfer through REC.
Realizing in process of the present invention, inventor finds the structure of UMTS of the prior art, and at least there are the following problems: the existing system number of plies is too much, interface is numerous and resource utilization is low.
Summary of the invention
The embodiment provides a kind of wireless network communications system and data transmission method thereof, to realize between REC and RE, REC communicated each other by switching network between any two.
A kind of wireless network communications system, comprising:
By the interconnective wireless device controls REC of optical fiber, wireless device RE and switching network, a described REC manages RE described at least one, described RE belongs to a described REC management, and between described REC and described RE, described REC communicated each other by described switching network between any two.
A data transmission method for wireless network communications system, comprising:
By optical fiber, wireless device controls REC, wireless device RE and switching network are interconnected, a described REC manages RE described at least one, described RE belongs to a described REC management, and between described REC and described RE, described REC communicated each other by described switching network between any two.
The technical scheme provided as can be seen from the embodiment of the invention described above, REC, RE and switching network are interconnected by utilizing optical fiber by the embodiment of the present invention, REC with RE realizes communicating each other by described switching network.Solve the problem that the existing system number of plies is too much, interface is numerous and resource utilization is low.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment 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, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of UMTS network adopting core net to be combined with wireless access network of the prior art;
The structural representation of the wireless network communications system of a kind of flattening that Fig. 2 provides for the embodiment of the present invention one;
The structural representation of the wireless network communications system of the another kind of flattening that Fig. 3 provides for the embodiment of the present invention one;
Fig. 4 is when adopting the Ethernet exchanging based on MAC layer, the layering schematic diagram of each node a kind of that the embodiment of the present invention one provides;
The structure chart of a kind of RE that Fig. 5 provides for the embodiment of the present invention one;
The structure chart of a kind of REC that Fig. 6 provides for the embodiment of the present invention one;
The structure chart of a kind of equipment of the core network that Fig. 7 provides for the embodiment of the present invention one;
The structure chart of a kind of switching network that Fig. 8 provides for the embodiment of the present invention one;
The process chart of the method that a kind of RE that Fig. 9 provides for the embodiment of the present invention two registers to REC;
The process chart of the method that a kind of REC that Figure 10 provides for the embodiment of the present invention two registers to equipment of the core network;
A kind of REC that Figure 11 provides for the embodiment of the present invention three transmits the schematic flow sheet of data to RE0.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
For ease of the understanding to the embodiment of the present invention, be further explained explanation below in conjunction with accompanying drawing for several specific embodiment, and each embodiment does not form the restriction to the embodiment of the present invention.
Embodiment one
The structure of the wireless network communications system of a kind of flattening that this embodiment proposes as shown in Figure 2, in the wireless network communications system shown in Fig. 2, whole network configuration simplifies network level, REC, RE and switching network are interconnected by optical fiber, a described REC manages RE described at least one, described RE belongs to a described REC management, and between described REC and described RE, described REC communicated each other by described switching network between any two.Be understandable that, if needed, RE also directly can be communicated by described switching network between any two each other.
The quantity of described REC and RE can be multiple, multiple REC can be concentrated and be placed on close place, geographical position, also multiple REC dispersion can be placed on distant place, geographical position.
Described switching network can be based on MAC (MediumAccessControl, medium access control layer) metropolitan area network of the annular be made up of at least one switch that exchanges of layer or IP (Internet protocol, InternetProtocol) layer.Above-mentioned switching network can be ethernet switched network or optical switching network, is such as, EPON (EthernetPassiveOpticalNetwork, ethernet passive optical network) switching network etc.Above-mentioned switch can be Ethernet switch.Above-mentioned switching network is connected with REC, RE, equipment of the core network respectively by multiple port.
A REC can be communicated with a RE by switching network, and namely a REC can communicate with the RE belonging to this REC or other REC management.
The structure of the wireless network communications system of the another kind of flattening that this embodiment proposes as shown in Figure 3, in the wireless network communications system shown in Fig. 3, also comprise equipment of the core network, by optical fiber, equipment of the core network is connected with described REC, wireless device RE, switching network, is communicated each other by described switching network between described equipment of the core network and described REC, between described equipment of the core network and described RE.
In above-mentioned wireless network communications system, optical fiber between each node can zoom out, and the length of optical fiber can be very large, thus all nodes from switching network distance all can close to can be far away, the position of each node can be arranged according to actual needs, improve the flexibility of whole network organizing.Multiple REC, RE can be realized to integrate neatly, realize the object being dynamically composed resource pool.
When adopting the ethernet switched network based on MAC layer, the layering schematic diagram of each node a kind of that this embodiment provides as shown in Figure 4, REC and RE is divided into three layers, ground floor is physical layer, the second layer is MAC layer and third layer is application layer, be divided into two-layer by the switch in equipment of the core network and switching network, ground floor is physical layer and the second layer is MAC layer.
REC and RE all only has a kind of external interface, and this interface is Ethernet interface.The data of the application layer of above-mentioned REC, RE pass to MAC layer, form mac frame by MAC layer, are sent to ethernet switched network by external interface.Data, according to the target MAC (Media Access Control) address of above-mentioned mac frame, are accurately sent to destination node by ethernet switched network and equipment of the core network.
MAC layer transfer of data in data exchange process can adopt ethernet standard MAC layer Data Transport Protocol, as CSMA (carriersensemultipleaccess, carrier sense multiple access)/CD (CollisionDetection, collision detection) agreement.Flow control in data exchange process is identical with the flow control mode of Ethernet, error control in data exchange process is identical with the flow control mode of Ethernet, the exchanges data of each node just based on MAC layer exchange and do not affect application layer, which enhance the efficiency of transfer of data.
The major function of each node is as follows:
Equipment of the core network, is mainly used in providing user to connect, manages and complete carrying to the business of user to user, is provided to the interface of external network as bearer network simultaneously.
REC, is mainly used in the transmitting power control etc. of the control of base station and management, Iub interface communication, the process of Iub Frame Protocol, chnnel coding and decoding, interleave and deinterleave, spread spectrum and despreading, each physical channel.
RE, is mainly used in the low noise amplification, rf filtering etc. of modulus and digital-to-analogue conversion, Up/Down Conversion, automatic growth control, the multiplexed and demultiplexing of carrier wave, the power amplification of downstream signal and amplitude limit, upward signal.
Switching network, is mainly used in, according to destination address and source address, carrying out storage forwarding between the individual nodes to Frame.
The structure chart of a kind of RE that this embodiment provides as shown in Figure 5, specifically comprises:
Location registration process module 51, for sending the access request of carrying the MAC Address of RE to REC by switching network;
Frame processing module 52, during for needing as described RE to send Frame to other RE or REC or equipment of the core network, structure destination address is the Frame of the MAC Address of other RE or REC described or equipment of the core network, sends described Frame to switching network; And receive the Frame that destination address that described switching network sends over is the MAC Address of described RE.
The structure chart of a kind of REC that this embodiment provides as shown in Figure 6, specifically comprises:
Location registration process module 61, for receiving the access request that RE is sended over by switching network, obtain and preserve in described access request the MAC Address of the described RE carried, and being sent the access request of carrying the MAC Address of described RE by described switching network to equipment of the core network;
Frame processing module 62, during for needing as described REC to send Frame to other REC or RE or equipment of the core network, structure destination address is the Frame of the MAC Address of other REC or RE described or equipment of the core network, sends described Frame to switching network; Receive the Frame that destination address that described switching network sends over is the MAC Address of described REC.
The structure chart of a kind of equipment of the core network that this embodiment provides as shown in Figure 7, specifically comprises:
Getting Network Topology Information module 71, for receiving the access request that REC sends, obtain the MAC Address of RE and the described REC carried in described access request, the MAC Address of described RE and described REC, routing information are preserved as network topological information, described routing information comprises port information corresponding to the MAC Address of described RE and described REC;
Frame processing module 72, during for needing when described equipment of the core network to send Frame to REC or RE, structure destination address is the Frame of the MAC Address of described REC or described RE, sends described Frame to switching network; Receive the Frame that destination address that described switching network sends over is the MAC Address of described equipment of the core network, obtain the data of carrying in described Frame; Receive the Frame that destination address that described switching network sends over is the MAC Address of specifying REC or specifying RE, according to the routing information of specifying REC or appointment RE described in the Getting Network Topology Information that described Getting Network Topology Information module is preserved, send described appointment REC to described switching network or specify the routing information of RE and described destination address to be described Frame of specifying the MAC Address of REC or appointment RE.
The structure chart of a kind of switching network that this embodiment provides as shown in Figure 8, specifically comprises:
Address table administration module 81, for setting up and preserve the address table of the corresponding relation comprised between described equipment of the core network, the MAC Address of REC, RE and port;
Data forwarding module 82, for receiving equipment of the core network, after Frame that REC or RE sends over, the address table that described address table administration module preserves is searched according to the target MAC (Media Access Control) address of described Frame, when inquiring port corresponding to described target MAC (Media Access Control) address, by described port, described dataframe is gone out; When not inquiring port corresponding to described target MAC (Media Access Control) address, by described dataframe to equipment of the core network, obtain port corresponding to described target MAC (Media Access Control) address according to the routing information that described equipment of the core network sends over, by described port, described dataframe is gone out.
Embodiment two
In embodiments of the present invention, REC, RE and switching network are interconnected by optical fiber, a REC manages at least one RE, and RE belongs to a REC management, and between REC and RE, REC communicated each other by switching network between any two.
Further, by optical fiber, equipment of the core network is connected with REC, RE, switching network, is communicated each other by switching network between equipment of the core network and REC, between equipment of the core network and RE.
RE needs to register at REC, and RE sends the access request of carrying the MAC Address of described RE to REC by switching network, described REC obtains and preserves in described access request the MAC Address of the described RE carried.Described RE structure carries the mac frame of message type field, described message type field comprises the mark of described RE, MAC Address and the indication information by the described mac frame of described REC process, and described RE carries the access request of described mac frame by described switching network broadcast;
Described REC receives described mac frame, determine that described mac frame is by described REC process according to described indication information, determine that described RE belongs to described REC and manages according to the mark of described RE, described REC obtains and preserves in described access request the medium access control layer MAC Address of the described RE carried.
The handling process of the method that a kind of RE that this embodiment provides registers to REC as shown in Figure 9, comprises following treatment step:
The MAC Address of RE and the access request of mark are carried in step 91, RE broadcast.
REC and RE just can arrange fixing MAC Address when dispatching from the factory.After RE joins network, the mac frame carrying message type field can be constructed by RE, above-mentioned message type field comprises the mark of described RE, MAC Address and the indication information by the described mac frame of described REC process, and described RE carries the access request of described mac frame by described switching network broadcast.
Exemplary, the structure of the mac frame carried in above-mentioned access request as described in Table 1:
Table 1:
The structure of mac frame comprises: standing part and self-defined part, and standing part adopts the standard agreement of Ethernet, comprising: lead code, frame first symbol, MAC destination address, mac source address, length and check field.Self-defined part comprises data segment field, in data segment, adopt custom protocol.
Data segment field is divided into two parts by the embodiment of the present invention, and a part is type of message section (10B), and a part is effective payload data section (36B-1490B) in addition.The valid data that effective payload data section refers to equipment of the core network and REC, equipment of the core network and transmits between RE, REC and RE.Type of message is divided into three parts, is by the indication information of RE or REC process, the mark of RE and MAC Address respectively, concrete structure as described in Table 2:
Table 2:
" indication information of REC or RE process " field is mainly used in when broadcast MAC frame, when this 1B value is 10101010 then by this broadcast frame of REC process, when this 1B is 01010101 then by this broadcast frame of equipment of the core network process; Which REC management is " mark of RE " field belong to for illustration of this RE; " MAC Address " field is used for REC reports the RE managed with this REC MAC Address to equipment of the core network, reports the MAC Address of a RE each time.
In this step, RE broadcast mac frame in message type field structure as described in Table 3:
Table 3:
Step 92, REC obtain and preserve the MAC Address of the RE carried in above-mentioned access request.
REC receives described mac frame, by the indication information of the described mac frame of REC process, what comprise according to the message type field of described mac frame determines that described mac frame is by described REC process, the mark of the RE comprised according to the message type field of described mac frame determines that described RE belongs to described REC and manages, and described REC obtains and preserves in described access request the MAC Address of the described RE carried.
Such as, the equipment of the core network be connected with switching network, REC and other RE receive the mac frame carrying message type field described in above-mentioned table 3 of broadcast, obtain the message type field in mac frame, judge the mac frame whether to one's name processed according to this message type field.
REC is 10101010 according to the value of the first character joint in type of message, and judgement is the type of message belonging to REC.Because each REC can configure the identifiable scope of the RE belonging to its management in advance, the identifiable scope that REC continues the RE to one's name managed according to the ident value of described RE determines that described RE is that described REC manages, then REC just preserves the source MAC (i.e. the MAC Address of RE) in this mac frame.If equipment of the core network, other REC and RE judge that above-mentioned mac frame does not to one's name process, then abandon this mac frame.
Step 93, REC send access request response to RE.
In embodiments of the present invention, REC needs to register in the core network, can obtain whole topology of networks information to make core net.The handling process of the method that a kind of REC that this embodiment provides registers to equipment of the core network as shown in Figure 10, comprises following treatment step:
Step 101, REC initiate access request by broadcast mode, and MAC Address is informed equipment of the core network.
After REC obtains the MAC Address of RE, REC can construct the mac frame carrying message type field, described message type field comprises the MAC Address of described REC and belongs to the MAC Address of RE that described REC manages, and by the indication information of mac frame described in described equipment of the core network process.REC takes the form broadcasted to be sent the access request of carrying described mac frame to equipment of the core network by switching network, the MAC Address of REC and the MAC Address of RE are informed equipment of the core network, to make equipment of the core network receive described mac frame, determine that described mac frame is by equipment of the core network process according to described indication information.
Exemplary, the structure of the mac frame carried in above-mentioned access request as shown in Table 1 above, the structure of the message type field in this mac frame as described in Table 4:
Table 4:
Step 102, equipment of the core network receive the access request that REC sends, and the MAC Address of each REC, RE, routing information association are kept in internal table of addresses.
The address table setting up and preserve the corresponding relation comprised between described equipment of the core network, the MAC Address of REC, RE and port is needed in switching network.After the Frame that switching network receives equipment of the core network, REC or RE sends over, described address table is searched according to the target MAC (Media Access Control) address of described Frame, when inquiring port corresponding to described target MAC (Media Access Control) address, by described port, described dataframe is gone out; When not inquiring port corresponding to described target MAC (Media Access Control) address, by described dataframe to equipment of the core network.
Described switching network receives routing information corresponding to described target MAC (Media Access Control) address that described equipment of the core network sends over, port corresponding to described target MAC (Media Access Control) address is obtained according to described routing information, gone out by described dataframe by described port, described routing information is that network topological information that described equipment of the core network inquires about its preservation according to described target MAC (Media Access Control) address obtains.
Such as, after what equipment of the core network received that REC sends contain the mac frame of the message type field shown in above-mentioned table 4, obtain the message type field in mac frame, judge the mac frame whether to one's name processed according to this message type field.
Equipment of the core network is 01010101 according to the value of the first character joint in type of message, judgement is by the mac frame of equipment of the core network process, equipment of the core network obtains the MAC Address of the RE in the source MAC of mac frame and above-mentioned type of message, and the MAC Address of REC with RE, routing information are associated and be kept in the internal table of addresses of equipment of the core network.The access request that equipment of the core network sends by receiving each REC, is kept at the MAC Address of each REC, RE in whole network, routing information association in the internal table of addresses of equipment of the core network.
Step 103, equipment of the core network send access request response to REC.
Through each RE to the registration of REC, each REC is to the registration of equipment of the core network, equipment of the core network will obtain topology of networks information automatically, and according to this network topology structure, data just can be delivered to another one node from a node by equipment of the core network accurately.Then, equipment of the core network sends access request response to REC.
Embodiment three
When REC, RE need to other node transmit data frames, above-mentioned REC and RE sends the data to switching network by optical fiber, and this switching network is delivered to equipment of the core network data again, by switching network, data is sent to destination node again by equipment of the core network.After switching network establishes sufficient address table by study, between REC and RE, directly can transmit data by switching network.
A kind of REC that this embodiment provides transmits the schematic flow sheet of data as shown in figure 11 to RE0, and concrete processing procedure is as follows:
The application layer of REC passes data to the MAC layer of REC, and the MAC layer of REC searches the MAC Address that mac address table that REC preserves obtains RE0.
The MAC layer of REC according to the MAC Address of RE0 and data content composition mac frame, the structure of this mac frame as described in Table 5:
Table 5
The structure of the type of message in the mac frame shown in above-mentioned table 5 as described in Table 6
Table 6
Above-mentioned mac frame is sent to switching network by ether interface by the MAC layer of REC.Above-mentioned switching network obtains the target MAC (Media Access Control) address (i.e. the MAC Address of RE0) in mac frame, searches its address table safeguarded obtain port corresponding to target MAC (Media Access Control) address according to target MAC (Media Access Control) address.When starting, above-mentioned switching network does not also set up sufficient address table, does not find the port that target MAC (Media Access Control) address is corresponding, so above-mentioned mac frame is sent to equipment of the core network by above-mentioned switching network by searching address table.
After equipment of the core network receives above-mentioned mac frame, the value according to the first character joint in the type of message of above-mentioned mac frame is 01010101, and judgement is the type of message belonging to equipment of the core network, and equipment of the core network obtains destination address and the source address of above-mentioned mac frame.Equipment of the core network searches the network topological information oneself preserved according to the destination address of above-mentioned mac frame and source address, find the routing information of RE0, the routing information of above-mentioned mac frame and RE0 is delivered to switching network.
The routing information of the RE0 that above-mentioned switching network passes over according to equipment of the core network is chosen corresponding port and above-mentioned mac frame is delivered to RE0, and, in address table, preserve the MAC Address of RE0 and the corresponding relation of port.Subsequent exchange network receives the mac frame that destination address is the MAC Address of RE0 again, after searching address above mentioned table and obtaining port corresponding to the MAC Address of RE0, directly by this port, mac frame is delivered to RE0, and no longer mac frame is sent to equipment of the core network.
The application layer of RE0, above-mentioned mac frame is delivered to the MAC layer of RE0 by the application layer of RE0 again.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-OnlyMemory, ROM) or random store-memory body (RandomAccessMemory, RAM) etc.
In sum, equipment of the core network, REC, RE and switching network are interconnected by utilizing optical fiber by the embodiment of the present invention, and equipment of the core network, REC with RE realize communicating each other by described switching network.Solve the problem that the existing system number of plies is too much, interface is numerous and resource utilization is low.
The embodiment of the present invention achieves can carry out communication across layers, achieves the communication between same layer REC simultaneously, and achieving REC can communicate with the RE belonging to other REC management.The embodiment of the present invention decreases the equipment of existing system: no longer need RNC, solves the problem causing can not communicating between REC because RNC does not work, and makes the topological interface connectivity of the embodiment of the present invention strengthen like this.
All REC can concentrate and be placed on close place, geographical position by the embodiment of the present invention, thus solve the troublesome problem of REC cloth station addressing, improve the flexibility of whole network organizing.Multiple REC, RE can be realized to integrate neatly, realize the object being dynamically composed resource pool.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (11)
1. a wireless network communications system, is characterized in that, comprising:
By Fiber connection to the wireless device controls REC of switching network and wireless device RE, a described REC manages RE described at least one, described RE belongs to a described REC management, and between described REC and described RE, described REC communicated each other by described switching network between any two;
Described wireless network communications system also comprises:
Equipment of the core network, for by Fiber connection to switching network, communicated each other by described switching network between described equipment of the core network and described REC, between described equipment of the core network and described RE.
2. wireless network communications system according to claim 1, is characterized in that, described switching network is the metropolitan area network be made up of at least one switch exchanged based on Media access contorl MAC layer or Internet protocol IP layer.
3. wireless network communications system according to claim 1 and 2, is characterized in that, described RE comprises:
Location registration process module, for sending the access request of carrying the MAC Address of described RE to described REC by described switching network;
Frame processing module, during for needing as described RE to send Frame to other RE or described REC or described equipment of the core network, structure destination address is the Frame of the MAC Address of other RE described or described REC or described equipment of the core network, sends described Frame to described switching network; And receive the Frame that destination address that described switching network sends over is the MAC Address of described RE.
4. wireless network communications system according to claim 1 and 2, is characterized in that, described REC comprises:
Location registration process module, for receiving the access request that described RE is sended over by described switching network, obtain and preserve in described access request the MAC Address of the described RE carried, and being sent the access request of carrying the MAC Address of described RE by described switching network to equipment of the core network;
Frame processing module, during for needing as described REC to send Frame to other REC or described RE or described equipment of the core network, structure destination address is the Frame of the MAC Address of other REC described or described RE or described equipment of the core network, sends described Frame to described switching network; And receive the Frame that destination address that described switching network sends over is the MAC Address of described REC.
5. wireless network communications system according to claim 1 and 2, is characterized in that, described equipment of the core network comprises:
Getting Network Topology Information module, for receiving the access request that REC sends, obtain the MAC Address of described RE and the described REC carried in described access request, the MAC Address of described RE and described REC, routing information are preserved as network topological information, described routing information comprises port information corresponding to the MAC Address of described RE and described REC;
Frame processing module, during for needing when described equipment of the core network to send Frame to described REC or described RE, structure destination address is the Frame of the MAC Address of described REC or described RE, sends described Frame to described switching network; Receive the Frame that destination address that described switching network sends over is the MAC Address of described equipment of the core network, obtain the data of carrying in described Frame; Receive the Frame that destination address that described switching network sends over is the MAC Address of specifying REC or specifying RE, according to the routing information of specifying REC or appointment RE described in the Getting Network Topology Information that described Getting Network Topology Information module is preserved, send described appointment REC to described switching network or specify the routing information of RE and described destination address to be described Frame of specifying the MAC Address of REC or appointment RE.
6. wireless network communications system according to claim 5, is characterized in that, described switching network comprises:
Address table administration module, for setting up and preserve the address table of the corresponding relation comprised between described equipment of the core network, the MAC Address of REC, RE and port;
Data forwarding module, for receiving equipment of the core network, after Frame that REC or RE sends over, the address table that described address table administration module preserves is searched according to the target MAC (Media Access Control) address of described Frame, when inquiring port corresponding to described target MAC (Media Access Control) address, by described port, described dataframe is gone out; When not inquiring port corresponding to described target MAC (Media Access Control) address, by described dataframe to equipment of the core network, obtain port corresponding to described target MAC (Media Access Control) address according to the routing information that described equipment of the core network sends over, by described port, described dataframe is gone out.
7. a data transmission method for wireless network communications system, is characterized in that, comprising:
By optical fiber, wireless device controls REC, wireless device RE are connected with switching network, a described REC manages RE described at least one, described RE belongs to a described REC management, and between described REC and described RE, described REC communicated each other by described switching network between any two;
Described method also comprises:
By optical fiber, equipment of the core network is connected with described switching network, is communicated each other by described switching network between described equipment of the core network and described REC, between described equipment of the core network and described RE.
8. method according to claim 7, is characterized in that, described method also comprises:
Described RE sends the access request of carrying the Media access contorl MAC Address of described RE to described REC by described switching network, described REC receives the access request that described RE is sended over by described switching network, obtains and preserves in described access request the MAC Address of the described RE carried;
Described REC sends the access request of carrying the MAC Address of described RE to equipment of the core network by described switching network, with the access request making described equipment of the core network receive described REC transmission, obtain the MAC Address of described RE and the described REC carried in described access request, the MAC Address of described RE and described REC, routing information are preserved as network topological information, described routing information comprises port information corresponding to the MAC Address of described RE and described REC.
9. method according to claim 8, it is characterized in that, described RE sends the access request of carrying the Media access contorl MAC Address of described RE to described REC by described switching network, described REC receives the access request that described RE is sended over by described switching network, obtain and preserve in described access request the Media access contorl MAC Address of the described RE carried, comprising:
Described RE structure carries the mac frame of message type field, described message type field comprises the mark of described RE, MAC Address and the indication information by the described mac frame of described REC process, and described RE carries the access request of described mac frame by described switching network broadcast;
Described REC receives described mac frame, determine that described mac frame is by described REC process according to described indication information, determine that described RE belongs to described REC and manages according to the mark of described RE, described REC obtains and preserves in described access request the Media access contorl MAC Address of the described RE carried.
10. method according to claim 8, is characterized in that, described REC sends the access request of carrying the MAC Address of described RE to equipment of the core network by described switching network, and described equipment of the core network receives the access request that described REC sends, and comprising:
Described REC structure carries the mac frame of message type field, described message type field comprises the MAC Address of described REC and belongs to the MAC Address of the RE that described REC manages, and by the indication information of mac frame described in described equipment of the core network process, described REC carries the access request of described mac frame by described switching network broadcast, to make described equipment of the core network receive described mac frame, determine that described mac frame is by described equipment of the core network process according to described indication information.
11. methods according to any one of claim 7 to 10, it is characterized in that, described method also comprises:
The address table of the corresponding relation comprised between described equipment of the core network, the MAC Address of REC, RE and port is set up and preserved to described switching network;
After the Frame that described switching network receives equipment of the core network, REC or RE sends over, described address table is searched according to the target MAC (Media Access Control) address of described Frame, when inquiring port corresponding to described target MAC (Media Access Control) address, by described port, described dataframe is gone out; When not inquiring port corresponding to described target MAC (Media Access Control) address, by described dataframe to equipment of the core network;
Described switching network receives routing information corresponding to described target MAC (Media Access Control) address that described equipment of the core network sends over, port corresponding to described target MAC (Media Access Control) address is obtained according to described routing information, gone out by described dataframe by described port, described routing information is that network topological information that described equipment of the core network inquires about its preservation according to described target MAC (Media Access Control) address obtains.
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| WO2016187872A1 (en) * | 2015-05-28 | 2016-12-01 | 华为技术有限公司 | Data transmission method and apparatus, and switching device |
| WO2017077361A1 (en) * | 2015-11-02 | 2017-05-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Technique to align a radio interface frame timing reference in a pool of radio equipment controllers |
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| CN101247372A (en) * | 2007-02-14 | 2008-08-20 | 株式会社东芝 | Communication system, gateway device and adapter device |
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