CN1889513A - Exchange system for WiMAX steam exchanging - Google Patents
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- CN1889513A CN1889513A CNA2005100801759A CN200510080175A CN1889513A CN 1889513 A CN1889513 A CN 1889513A CN A2005100801759 A CNA2005100801759 A CN A2005100801759A CN 200510080175 A CN200510080175 A CN 200510080175A CN 1889513 A CN1889513 A CN 1889513A
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Abstract
An interchange system of WiMAX stream interchange comprises stream processing unit and stream interchange unit. It is featured as using stream interchange unit to receive WiMAX stream retransmitted by stream processing unit and interchanging source connection identification of WiMAX stream to be corresponding connection identification of next jump, sending interchanged WiMAX stream to stream processing unit by set stream port. By utilizing said system, mesh radio interconnected mode of WiMAX node can be realized.
Description
Technical field
The present invention relates to the communications field, relate in particular to the switching system of a kind of WiMAX of being used for stream exchange.
Background technology
802.16 (being commonly called as WiMAX) is first broadband wireless access standard.This standard has only defined physical layer and MAC layer.The MAC layer is divided into the specific convergence sub-layer of service, MAC common part sublayer again and encrypts the sublayer.This standard has only defined the specific convergence sub-layer of corresponding service, the undefined specific convergence sub-layer of service at TDM business or other access technology based on ATM with based on message (for example Ethernet and IP bag).
The WiMAX technology is based on the wireless access transmission technology of WiMAX Business Stream, and a major function of serving specific convergence sub-layer is the stream mapping.Though WiMAX is based on Business Stream, standard is not introduced the notion of stream exchange.
According to 802.16 standards, described WiMAX Business Stream is a kind of WiMAXMAC transmission service (promptly stream has directivity) that one-way transmission is provided, when stream is activated and one 16 CID (Connection Identifier; Connection identifier) mapping mutually.
The WiMAX system configuration of prior art one related to the present invention, as shown in Figure 1:
Existing WiMAX system comprises WiMAX base station 100, WiMAX subscriber station B200 and WiMAX subscriber station A300.
Described WiMAX base station 100 comprises Switching Module 110, stream mapping block 120, WiMAX stream processing unit 130.
If the WiMAX system supports ATM, Ethernet/IP or E1/T1 transmission, described Switching Module 110 generally includes atm switching module, MAC exchange/VLAN exchange/IP Switching Module and TDM Switching Module, carry out routing by these Switching Modules, to support the intercommunication between the different user station under the WiMAX base station, to support the intercommunication of 130 of wire transmission port (for example 100 m ethernet port, E1/T1 port) and WiMAX stream processing units.Except that ATM, Ethernet/IP or E1/T1 transmission technology,, need to increase other Switching Module if also support other wire transmission technology.
Described stream mapping block 120, corresponding to the specific convergence sub-layer of the service of 802.16 standards, the 802.16MAC layer is handled the MAC common part sublayer of corresponding 802.16 standards of subelement.The type difference of the wire transmission technology of supporting according to system, its kind is also a lot.For example, if system supports the ATM wire transmission technology, then described stream mapping block is an ATM stream mapping block; If system supports the wire transmission technology of Ethernet, then described stream mapping block is an Ethernet/IP stream mapping block; If system supports the TDM wire transmission technology, then described stream mapping block is a TDM stream mapping block.
Described WiMAX stream processing unit 130 comprises 802.16 physical layer process subelements, encrypts sub-layer processes subelement and 802.16MAC layer processing subelement.
Described WiMAX subscriber station B200 comprises stream processing unit 210 and stream mapping block 220;
Wherein said stream processing unit 210 comprises 802.16 physical layer process subelements, encrypts sub-layer processes subelement and 802.16MAC layer processing subelement.
Described stream mapping block 220 is the same with the stream mapping block 120 in the described base station 100, and corresponding to the specific convergence sub-layer of the service of 802.16 standards, the 802.16MAC layer is handled the MAC common part sublayer of corresponding 802.16 standards of subelement.It also has many types according to the type difference of the wire transmission technology of system's support.
The module that comprises in described WiMAX subscriber station A300 and the described WiMAX subscriber station B200 is identical.
Below in conjunction with Fig. 1, sending out ethernet frame with ethernet user A to ethernet user B is that each intermodule carries out the process that information is transmitted in the existing WiMAX system of example explanation:
At first, the Ethernet stream mapping block of WiMAX subscriber station A is according to the source MAC and the VLAN sign of the Ethernet frame head of user A, with the ethernet frame of the user A WiMAX stream that to be mapped as a connection identifier be CID2, and described WiMAX stream is uploaded to the stream processing unit of subscriber station.
Then, after described stream processing unit is handled described WiMAX stream, be that the WiMAX of the CID2 wireless channel of flowing through is issued the WiMAX base station with connection identifier.
Subsequently, the stream processing unit of described WiMAX base station is that the WiMAX stream of CID2 is handled to described connection identifier, and is uploaded to the Ethernet stream mapping block of base station.
Then, the Ethernet of described base station stream mapping block is that the WiMAX stream of CID2 shines upon back ethernet frame with connection identifier, and sends it to MAC/VLAN/IP Switching Module.
When the base station confirms that user A carries out business of networking, then described ethernet frame is exchanged to higher level's treatment facility and handle by the MAC/VLAN/IP Switching Module.
When the business intercommunication of user A execution and user B is confirmed in the base station, according to 802.16 standards, the WiMAX Business Stream is a kind of WiMAX MAC transmission service (promptly stream has directivity) that one-way transmission is provided, and therefore described MAC/VLAN/IP Switching Module exchanges to described ethernet frame another Ethernet stream mapping block of base station.
Then, another Ethernet stream mapping block of base station is according to the target MAC (Media Access Control) address and the VLAN sign of Ethernet frame head, ethernet frame is mapped as another WiMAX stream (identifying with CID1), and the flow data that will be designated CID1 is issued the stream processing unit of WiMAX subscriber station B through wireless channel.
After the stream processing unit of described WiMAX subscriber station B is handled described ethernet frame, send the Ethernet stream mapping block of WiMAX subscriber station A to.
At last, through the Ethernet of WiMAX subscriber station B stream mapping block WiMAX being flowed CID1 shines upon back ethernet frame and passes to user B.
By the technical scheme of above-mentioned prior art as can be seen, when prior art is supported the wire transmission technology of Ethernet, need net frame too to be exchanged, thereby can realize the intercommunication between the different user station under the WiMAX system, or realize the business of user's online through the MAC/VLAN/IP Switching Module.
When if prior art need be supported another wire transmission technology,, then need atm switching module that ATM cell is exchanged as ATM.
By the technical scheme of prior art as can be seen, it has the following disadvantages:
1, every increase supports a kind of wire transmission technology will increase a kind of Switching Module newly, and autgmentability is poor.
2, the wire transmission technology kind of Zhi Chiing is many more, and the Switching Module kind that needs is also just many more, thereby makes the wire transmission of WiMAX base station partly become complicated, and the interconnection line is many, the cost height.
3, in order to support the intercommunication between different WiMAX subscriber stations, user data package or traffic frame etc. need be through four times stream mapping process and operation exchange processes once, so transmission delay is bigger.
4, in the prior art, prior art can't be supported the direct intercommunication between the WiMAX subscriber station, can only could realize information mutual communication between different WiMAX subscriber stations by the WiMAX base station, therefore when between WiMAX subscriber station and WiMAX base station obstruction being arranged, information mutual communication can not be realized in WiMAX subscriber station and WiMAX base station; And the load of WiMAX base station is bigger.
5, prior art can not be supported to carry out intercommunication by the WiMAX subscriber station between the WiMAX base station, and when switching in the sub-district, the state of the WiMAX of WiMAX base station stream can only be transferred to another WiMAX base station by base station controller or wired cable.
Summary of the invention
The switching system that the purpose of this invention is to provide the exchange of a kind of WiMAX of being used for stream is by the invention solves the problem of system extension difference in the prior art; Solved because the wire transmission technology kind of supporting is many more, the Switching Module kind that needs is also just many more and cause the wire transmission of WiMAX base station partly to become complicated, and the interconnection line is many, the problem that cost is high; Solved in the prior art in order to support the intercommunication between WiMAX different user station, user data package or traffic frame etc. need cause the bigger problem of transmission delay through four stream mapping process and operation exchange process once; Solved in the prior art owing to the direct intercommunication that can't support between the WiMAX subscriber station, can only could realize information mutual communication between different WiMAX subscriber stations by the WiMAX base station, and cause when between WiMAX subscriber station and WiMAX base station obstruction being arranged, information mutual communication can not be realized in WiMAX subscriber station and WiMAX base station, and causes the bigger problem of load of WiMAX base station; Solved in the prior art owing to can not support to carry out intercommunication by the WiMAX subscriber station between the WiMAX base station, and when causing switching in the sub-district, the state of the WiMAX stream of WiMAX base station can only be transferred to the problem of another WiMAX base station by base station controller or wired cable.
The objective of the invention is to be achieved through the following technical solutions:
A kind of switching system that is used for the exchange of WiMAX stream provided by the invention comprises:
Stream processing unit is used for handling and forwarding WiMAX stream;
The stream crosspoint, be used for receiving the WiMAX stream that described stream processing unit is transmitted by the flow port of setting, and with the source connection identifier of described WiMAX stream is exchanged for described source connection identifier next jumps connection identifier, and spread by the flow port the set WiMAX after with described exchange and to give described stream processing unit.
Wherein, described stream processing unit comprises:
The first-class processing unit and/or second stream processing unit;
Be used for the WiMAX stream that receiving end/sending end transmits,, described WiMAX spread give described stream crosspoint according to the flow port of the source connection identifier correspondence of the WiMAX stream that receives;
And/or, being used to receive the WiMAX stream that described stream crosspoint transmits, the described WiMAX after described WiMAX stream is handled and will be handled spreads and gives receiving terminal.
Wherein, the flow port between described stream crosspoint and described stream processing unit defines according to the Radio Resource of system's support.
Wherein, described Radio Resource comprises WiMAX website, sector, frequency and/or subchannel.
Wherein, described switching system also comprises:
Transmitting terminal stream map unit and transmitting terminal stream processing unit;
Described transmitting terminal stream map unit, be used for traffic frame, packet, cell or time slot that the receiving end/sending end user sends, and be corresponding WiMAX stream with described traffic frame, packet, cell or time slot mapping, described WiMAX is spread give the transmitting terminal stream processing unit then;
Described transmitting terminal stream processing unit is used for the WiMAX stream that receiving end/sending end stream map unit transmits, and sends to described first-class processing unit after described WiMAX stream handled.
Wherein, described switching system also comprises:
Receiving terminal stream processing unit and receiving terminal stream map unit;
Described receiving terminal stream processing unit is used to receive the WiMAX stream that described stream processing unit transmits, and after described WiMAX stream is handled, sends described receiving terminal stream map unit to;
Described receiving terminal stream map unit is used to receive the WiMAX stream that described receiving terminal stream processing unit transmits, and described WiMAX stream is mapped as corresponding business frame, packet, cell or time slot, sends the receiving terminal user to.
Wherein, described transmitting terminal stream processing unit and receiving terminal stream processing unit comprise that respectively MAC handles subelement, encrypts sub-layer processes subelement and physical layer process subelement;
The described first-class processing unit and second stream processing unit comprise the physical layer process subelement respectively and encrypt the sub-layer processes subelement;
The MAC of described transmitting terminal stream processing unit handles subelement and receives the WiMAX stream that described transmitting terminal stream map unit sends, then after encrypting the encryption of sub-layer processes subelement, by wireless channel, described WiMAX is spread the physical layer process subelement of giving described first-class processing unit by the physical layer process subelement of transmitting terminal stream processing unit; After the physical layer process subelement of described first-class processing unit is handled described WiMAX stream, then after the encryption sub-layer processes subelement of first-class processing unit is decrypted, described WiMAX is spread give described stream crosspoint;
After the physical layer process subelement of the described first-class processing unit or second stream processing unit receives the described WiMAX stream of stream crosspoint transmission, through encrypting the sub-layer processes subelement described WiMAX stream is encrypted, the physical treatment subelement that sends described receiving terminal stream processing unit to by wireless channel is handled then; Described WiMAX after the processing flows through after the encryption sublayer of described receiving terminal stream processing unit is decrypted, and handles subelement by the MAC of described receiving terminal stream processing unit and handles; Then described WiMAX is spread and give described receiving terminal stream map unit.
Wherein said switching system also comprises a MAC processing unit and/or the 2nd MAC processing unit, and, the first-class map unit and/or the second stream map unit;
A described MAC processing unit or the 2nd MAC processing unit are used for receiving the WiMAX stream that described stream crosspoint transmits by the flow port of setting, and after described WiMAX stream handled, send the first-class map unit or the second stream map unit to;
The described first-class map unit or the second stream map unit are used to receive the WiMAX stream after the described MAC layer processing unit processes, and the mapping of described WiMAX stream is postbacked sending end user's traffic frame, send to higher level's processing unit then.
Wherein, the flow port between described stream crosspoint and a described MAC layer processing unit and/or the 2nd MAC layer processing unit defines according to the external cable port of system.
Wherein, the stream processing unit of described system is by a plurality of frequency ranges, or, radio interconnected with subchannels different under the frequency range, sub carrier group, different burst group or different frame and multichannel transmitting terminal stream processing unit and receiving terminal stream processing unit.
Wherein, described stream crosspoint, described first-class processing unit, second stream processing unit, and the first-class map unit and/or the second stream map unit are arranged in the interface board;
Or,
Described stream crosspoint is arranged in the power board of center, described first-class processing unit, second stream processing unit, and the described first-class map unit and/or the second stream map unit are separately positioned in the interface board; Described center power board and described interface board interconnect by core bus.
As seen from the above technical solution provided by the invention, the present invention includes stream processing unit and stream crosspoint; Described stream crosspoint receives the WiMAX stream that described stream processing unit is transmitted by the flow port of setting, and with the source connection identifier of described WiMAX stream is exchanged for described source connection identifier next jumps connection identifier, and spread by the flow port the set WiMAX after with described exchange and to give described stream processing unit, by the present invention, multiple switching technology unification can be a kind of switching technology, thereby make the wire transmission of WiMAX base station partly obtain simplifying, the interconnection line is few, has reduced cost; Only need define the mapping relations and the commutative relation of itself and WiMAX stream by the present invention, just can support the internodal intercommunication of different WiMAX, or user's business of networking, so system has favorable expansibility; By the present invention, only need to flow exchange with a WiMAX and just can realize the internodal intercommunication of different WiMAX, thereby reduced the different internodal intercommunication transmission delays of WiMAX through twice stream mapping; By the present invention, can realize directly intercommunication between different WiMAX subscriber stations, so when between WiMAX subscriber station and WiMAX base station obstruction being arranged, be WiMAX subscriber station and WiMAX base station can not realize information mutual communication the time, system WiMAX subscriber station can pass through another WiMAX subscriber station and the 3rd WiMAX subscriber station intercommunication; Thereby reduced the load of WiMAX base station; By the present invention, WiMAX subscriber station and another WiMAX base station intercommunication can be passed through in the WiMAX base station, and when switching in the sub-district, the WiMAX base station can be transferred to another WiMAX base station by the WiMAX subscriber station with the state of WiMAX stream.
In addition, by the present invention, can support the Mesh pattern of WiMAX node, i.e. the meshed wireless interconnection pattern of WiMAX node.
Description of drawings
Fig. 1 is the WiMAX system configuration schematic diagram of prior art one;
Fig. 2 is the system configuration schematic diagram of first embodiment of the invention;
Fig. 3 is the system configuration schematic diagram of second embodiment of the invention;
Fig. 4 is the system configuration schematic diagram of seventh embodiment of the invention;
Fig. 5 supports the schematic diagram of Mesh pattern for the present invention.
Embodiment
The invention provides the switching system that is used for the exchange of WiMAX stream, its core comprises: stream processing unit is used for handling and forwarding WiMAX stream; Described stream crosspoint receives the WiMAX stream that described stream processing unit is transmitted by the flow port of setting, and with the source connection identifier of described WiMAX stream is exchanged for described source connection identifier next jumps connection identifier, and spread by the flow port the set WiMAX after with described exchange and to give described stream processing unit.
First embodiment provided by the invention is as shown in Figure 2:
This system comprises node A410, Node B 420, node C430.
Described node A410 comprises stream map unit 411 and stream processing unit 412;
Described Node B 420 comprises stream map unit 421 and stream processing unit 422;
Described node C430 comprises first-class processing unit 431, stream crosspoint 432, second stream processing unit 433, first-class map unit 434, second stream map unit 435, a MAC layer processing unit 436 and the 2nd MAC layer processing unit 437, and it all is arranged in the same WiMAX interface board.
Wherein, each stream map unit 440 comprises each stream map unit of the wire transmission technology that system supports, as Ethernet/IP stream map unit, ATM stream map unit, TDM stream map unit and/or other stream map unit.
MAC layer processing unit 436 among the described node C is connected with the first-class map unit 434 among the node C; The second stream map unit 435 among the 2nd MAC layer processing unit 437 among the described node C and the node C is connected.
Stream crosspoint 432 among the wherein said node C comprises a plurality of different flow ports, respectively with node C in described first-class processing unit 431, second stream processing unit 433 and a MAC layer processing unit 436 be connected with the 2nd MAC layer processing unit 437.
For example, suppose that a WiMAX node C is the WiMAX base station, support a website, each website has 4 sectors, and there are two frequencies each sector, do not support subchannel, support two atm ports, two Ethernet interfaces, two e1 ports, then can do as shown in Table 1 definition of WiMAX flow port and planning, flow port number available 4 bits are represented.
| The period of standing | Sector number | Frequency point number | Atm port number | The ethernet side slogan | E1 port number | Flow port number (Port) |
| 1 | 1 | 1 | - | - | - | 0 |
| 1 | 1 | 2 | - | - | - | 1 |
| 1 | 2 | 1 | - | - | - | 2 |
| 1 | 2 | 2 | - | - | - | 3 |
| 1 | 3 | 1 | - | - | - | 4 |
| 1 | 3 | 2 | - | - | - | 5 |
| 1 | 4 | 1 | - | - | - | 6 |
| 1 | 4 | 2 | - | - | - | 7 |
| - | - | - | 1 | - | - | 8 |
| - | - | - | 2 | - | - | 9 |
| - | - | - | - | 1 | - | 10 |
| - | - | - | - | 2 | - | 11 |
| - | - | - | - | - | 1 | 12 |
| - | - | - | - | - | 2 | 13 |
Table one
The first-class processing unit 431 among the described node C430 and second stream processing unit 433 comprise 802.16 physical layer process subelements respectively and encrypt the sub-layer processes subelement.
The 802.16MAC layer of the stream processing unit 412 among the described node A410 is handled the WiMAX stream that the stream map unit 411 among the subelement receiving node A410 sends, then after encrypting the encryption of sub-layer processes subelement, by the physical layer process subelement of transmitting terminal stream processing unit, described WiMAX is spread the physical layer process subelement of giving the described first-class processing unit 431 among the node C by wireless channel; After the physical layer process subelement of described first-class processing unit 431 is handled described WiMAX stream, then after the encryption sub-layer processes subelement of first-class processing unit 431 is decrypted, described WiMAX spread give described stream crosspoint 432, described stream crosspoint 432 sends to described second stream processing unit 433 according to the corresponding destination interface of described WiMAX stream with described WiMAX stream.
After the physical layer process subelement of described second stream processing unit 433 receives the described WiMAX stream of stream crosspoint 432 transmission, through encrypting the sub-layer processes subelement described WiMAX stream is encrypted, the physical treatment subelement that sends the stream processing unit 422 of described Node B to by wireless channel is handled then; Described WiMAX after the processing flows through after the encryption sublayer of stream processing unit 422 of described Node B is decrypted, and handles subelement by the MAC of the stream processing unit 422 of described Node B and handles; Then described WiMAX is spread the stream map unit 421 of giving described Node B.
When Business Stream was set up, WiMAX system node C at first distributed the CID (connection identifier) of the Business Stream of transmitting terminal user A and receiving terminal user B, set up the stream mapping table.And in CID allocation, configuration CID and the mapping relations that flow destination interface set up the stream swap table.
Situation when still illustrating that in conjunction with Fig. 2 application is of the present invention.
At first describe and utilize the present invention to realize the situation of business intercommunication between different nodes, suppose to see node A420 as transmitting terminal, Node B is seen receiving terminal as, utilizes the present invention to realize that the process of business intercommunication between different nodes is as follows:
User A sends traffic frame, packet, cell or time slot to node A410
It is the WiMAX Business Stream with described traffic frame, packet, cell or time slot mapping that described node A410 looks into the stream mapping table by its stream map unit 411, the CID of the CID of described WiMAX Business Stream for distributing to transmitting terminal user A, as CID2, and send corresponding stream processing unit 412 to.
After described stream processing unit 412 was successively handled subelement, encryption sublayer and the processing of 802.16 physical layer process subelements by the 802.16MAC layer, (CID of the CID of WiMAX Business Stream for distributing to transmitting terminal user A) sent to node C430 with the WiMAX Business Stream after handling.
802.16 physical layer process subelements of the first-class processing unit 431 among the described node C430 receive described WiMAX Business Stream (CID of the CID of WiMAX Business Stream for distributing to transmitting terminal user A) by wireless channel, after encrypting the sublayer deciphering, send the stream crosspoint 432 among the node C430 to, described stream crosspoint 432 by definition and node C430 in the flow port (Port2) of 431 of first-class processing units receive described WiMAX Business Stream (CID of WIMAX Business Stream is for giving the transmitting terminal user A CID of distribution) after, at first, according to the search of the CID the mac frame head of the described WiMAX Business Stream of coming in stream swap table, obtain stream destination interface and next jumping CID of this CID correspondence from flow port; Then according to described next jump CID whether effectively decision whether revise CID in the mac frame head, if next jumps CID, as CID1, in the CID value scope of distributing to receiving terminal, illustrate that then its CID value is effective, so the CID in the mac frame head of WiMAX Business Stream is exchanged for the CID that distributes to the receiving terminal user, as CID2 is exchanged for CID1, the WiMAX Business Stream after will exchanging then (CID of WiMAX Business Stream is CID1) sends second stream processing unit 433 among the node C to from the flow port (as the Port1 the figure) of correspondence.
After 802.16 physical layer process subelements in described second stream processing unit 433 receive described WiMAX (CID of WiMAX Business Stream the is CID1) stream of stream crosspoint 432 transmission, through encrypting the sub-layer processes subelement described WiMAX stream is encrypted, sent to Node B 420 through wireless channel then.
Described stream map unit 421 is looked into the stream mapping table described WiMAX Business Stream (CID of WiMAX Business Stream is CID1) is mapped as corresponding business frame, packet, cell or time slot, and sends it to user B.
Foregoing description utilize the present invention to realize the situation of business intercommunication between different nodes.Still utilize the present invention to realize the situation that the user surfs the Net in conjunction with Fig. 2 explanation below.
Suppose that transmitting terminal user A sends traffic frame, packet, cell or time slot to node A.
Suppose that transmitting terminal user A sends traffic frame, packet, cell or time slot to node A420.
It is the WiMAX Business Stream with described traffic frame, packet, cell or time slot mapping that described node A420 looks into the stream mapping table by its stream map unit 411, the CID of the CID of described WiMAX Business Stream for distributing to transmitting terminal user A, as CID2, and send corresponding stream processing unit 412 to.
Described stream processing unit 422 priorities send to node C430 with the WiMAX Business Stream after the processing (CID of WiMAX Business Stream is the CID to transmitting terminal user A distribution) after handling by the processing of 802.16MAC layer processing subelement, the encryption of encryption sublayer and 802.16 physical layer process subelements.
802.16 physical layer process subelements of the first-class processing unit 431 among the described node C430 receive described WiMAX Business Stream (CID of the CID of WiMAX Business Stream for distributing to transmitting terminal user A) by wireless channel, after encrypting the sublayer deciphering, be sent to stream crosspoint 432.
As described in described stream crosspoint 432 receives by flow port (as Port2 flow port among Fig. 3) definition and 431 of first-class processing units behind the WiMAX Business Stream (CID of WiMAX Business Stream is for giving the transmitting terminal user A CID of distribution), at first, according to the search of the CID the mac frame head of the described WiMAX Business Stream of coming in stream swap table, obtain stream destination interface and next jumping CID of this CID correspondence from flow port; Then according to described next jump CID whether effectively decision whether revise CID in the mac frame head, if next jumps CID not in the CID value scope of distributing, then illustrate described next to jump CID invalid, so send described WiMAX Business Stream (CID of WiMAX Business Stream is for giving the transmitting terminal user A CID of distribution) among the node C430 MAC layer processing unit 436 from the flow port (as the Port10 flow port Fig. 3) of correspondence.
After handling, 436 pairs of described WiMAX Business Streams of described MAC layer processing unit send corresponding stream map unit 434 to, 434 pairs of described WiMAX Business Streams of described stream map unit are mapped as the corresponding service frame, and send described traffic frame to the higher level treatment facility and handle.
Above-mentioned application process is being based on setting up when professional, and stream switching system at first distributes the CID (connection identifier) of the Business Stream of transmitting terminal user A and receiving terminal user B, sets up and flows mapping table; And in CID allocation, configuration CID and the mapping relations that flow destination interface realize behind the foundation stream swap table.
For based on setting up when professional, at first the CID (connection identifier) to the Business Stream of transmitting terminal user A and receiving terminal user B distributes, and sets up and flows mapping table; Dispose the flow port territory and the quick exchange territory of described CID correspondence then; And next that disposes described CID correspondence jumped the situation of CID, can use the present invention equally and realize above-mentioned functions.
The second embodiment of the present invention, as shown in Figure 3, the difference of the scheme of itself and first embodiment is:
This programme no longer is arranged on described first-class processing unit, second stream processing unit, stream crosspoint and first-class map unit and the second stream map unit in the same interface board of node C.In a second embodiment, the stream crosspoint is arranged in the center power board 510 of node C, described first-class processing unit is separately positioned in the interface boards different among the node C with second stream processing unit, first-class map unit and the second stream map unit, as the first-class map unit and the second stream map unit are arranged in the wireline interface plate, the first-class processing unit and second stream processing unit are arranged in the WiMAX wireless interface oralia.
The WiMAX of center power board stream crosspoint supports between wired or WiMAX wireless interface oralia, the operation exchange between wired and WiMAX wireless interface oralia.
Situation during Application Example two and first embodiment are identical, are not described in detail.
The difference of the 3rd embodiment provided by the invention and first embodiment is: do not comprise the first-class map unit and the second stream map unit in the interface board of node C, for the stream crosspoint, only dispose it and be arranged on first-class processing unit in the interface board and the flow port between second stream processing unit, as Port1 among the figure and Port2 flow port.When using this embodiment, the user can only realize the business intercommunication between the different user station, and can not realize user's online, and the specific implementation process and first embodiment are identical substantially, are not described in detail.
The difference of the 4th embodiment provided by the invention and first embodiment is: the function that only adopts first-class map unit 434 among first embodiment or second stream any one in the map unit 435 to finish the first-class map unit 434 and the second stream map unit 435.The specific implementation process and first embodiment are identical substantially, are not described in detail.
The difference of the 5th embodiment provided by the invention and first embodiment is: do not comprise the first-class map unit and the second stream map unit in the interface board of node C, for the stream crosspoint, only dispose the flow port between itself and the first-class processing unit and second stream processing unit, as Port1 among the figure and Port2 flow port.When using this embodiment, the user can only realize the business intercommunication between the different user station, and can not realize user's online, and the specific implementation process and first embodiment are identical substantially, are not described in detail.
The difference of the 6th embodiment provided by the invention and second embodiment is: do not comprise the first-class map unit and the second stream map unit, and the interface board that described stream map unit is set, for the stream crosspoint, only dispose the flow port between itself and the first-class processing unit and second stream processing unit.When using this embodiment, the user can only realize the business intercommunication between the different user station, and can not realize user's online, and the specific implementation process and first embodiment are identical substantially, are not described in detail.
The 7th embodiment provided by the invention as shown in Figure 4, only adopts first-class processing unit 431 among first embodiment or any one in second stream processing unit 433 to finish the function of the first-class processing unit 431 and second stream processing unit 433.
Situation when illustrating that in conjunction with Fig. 4 application is of the present invention.
At first describe and utilize the present invention to realize the situation of business intercommunication between different nodes, suppose to see node A420 as transmitting terminal, Node B is seen receiving terminal as, utilizes the present invention to realize that the process of business intercommunication between different nodes is as follows:
User A sends traffic frame, packet, cell or time slot to node A410
It is the WiMAX Business Stream with described traffic frame, packet, cell or time slot mapping that described node A410 looks into the stream mapping table by its stream map unit 411, the CID of the CID of described WiMAX Business Stream for distributing to transmitting terminal user A, as CID2, and send corresponding stream processing unit 412 to.
After described stream processing unit 412 was successively handled subelement, encryption sublayer and the processing of 802.16 physical layer process subelements by the 802.16MAC layer, (CID of the CID of WiMAX Business Stream for distributing to transmitting terminal user A) sent to node C430 with the WiMAX Business Stream after handling.
WiMAX Business Stream as described in 802.16 physical layer process subelements of the stream processing unit among the described node C430 (as second stream processing unit 433 among Fig. 3) receive by wireless channel (CID of the CID of WiMAX Business Stream) for distributing to transmitting terminal user A, after encrypting the sublayer deciphering, send the stream crosspoint 432 among the node C430 to, described stream crosspoint 432 by definition and node C430 in the flow port (as the Port1 among Fig. 3) of 433 of second stream processing units receive as described in behind the WiMAX Business Stream (CID of WIMAX Business Stream is for giving the transmitting terminal user A CID of distribution), at first, according to the search of the CID the mac frame head of the described WiMAX Business Stream of coming in stream swap table, obtain stream destination interface and next jumping CID of this CID correspondence from flow port; Then according to described next jump CID whether effectively decision whether revise CID in the mac frame head, if next jumps CID (as CID1) in the CID value scope of distributing to receiving terminal, illustrate that then its CID value is effective, so the CID in the mac frame head of WiMAX Business Stream is exchanged for the CID that distributes to the receiving terminal user, as CID2 is exchanged for CID1, the WiMAX Business Stream after will exchanging then (CID of WiMAX Business Stream is CID1) sends second stream processing unit 433 among the node C to from the flow port (as the Port1 Fig. 3) of correspondence.
After 802.16 physical layer process subelements in described second stream processing unit 433 receive described WiMAX (CID of WiMAX Business Stream the is CID1) stream of stream crosspoint 432 transmission, through encrypting the sub-layer processes subelement described WiMAX stream is encrypted, sent to Node B 420 through wireless channel then.
Described stream map unit 421 is looked into the stream mapping table described WiMAX Business Stream (CID of WiMAX Business Stream is CID1) is mapped as corresponding business frame, packet, cell or time slot, and sends it to user B.
Foregoing description utilize the present invention to realize the situation of business intercommunication between different nodes.Still utilize the present invention to realize the situation that the user surfs the Net in conjunction with Fig. 4 explanation below.
Suppose that transmitting terminal user A sends traffic frame, packet, cell or time slot to node A.
Suppose that transmitting terminal user A sends traffic frame, packet, cell or time slot to node A420.
It is the WiMAX Business Stream with described traffic frame, packet, cell or time slot mapping that described node A420 looks into the stream mapping table by its stream map unit 411, the CID of the CID of described WiMAX Business Stream for distributing to transmitting terminal user A, as CID2, and send corresponding stream processing unit 412 to.
Described stream processing unit 422 priorities send to node C430 with the WiMAX Business Stream after the processing (CID of WiMAX Business Stream is the CID to transmitting terminal user A distribution) after handling by the processing of 802.16MAC layer processing subelement, the encryption of encryption sublayer and 802.16 physical layer process subelements.
802.16 physical layer process subelements of second stream processing unit 433 among the described node C430 receive described WiMAX Business Stream (CID of the CID of WiMAX Business Stream for distributing to transmitting terminal user A) by wireless channel, after encrypting the sublayer deciphering, be sent to stream crosspoint 432.
As described in described stream crosspoint 432 receives by flow port (as Port1 flow port among Fig. 4) definition and 433 of second stream processing units behind the WiMAX Business Stream (CID of WiMAX Business Stream is for giving the transmitting terminal user A CID of distribution), at first, according to the search of the CID the mac frame head of the described WiMAX Business Stream of coming in stream swap table, obtain stream destination interface and next jumping CID of this CID correspondence from flow port; Then according to described next jump CID whether effectively decision whether revise CID in the mac frame head, if next jumps CID not in the CID value scope of distributing, then illustrate described next to jump CID invalid, so send described WiMAX Business Stream (CID of WiMAX Business Stream is for giving the transmitting terminal user A CID of distribution) among the node C430 MAC layer processing unit 436 from the flow port (as the Port10 flow port Fig. 4) of correspondence.
After handling, 436 pairs of described WiMAX Business Streams of described MAC layer processing unit send corresponding stream map unit 434 to, 434 pairs of described WiMAX Business Streams of described stream map unit are mapped as the corresponding service frame, and send described traffic frame to the higher level treatment facility and handle.
The 8th embodiment provided by the invention, the function that only adopts first-class map unit 434 among the 7th embodiment or second stream any one in the map unit 435 to finish the first-class map unit 434 and the second stream map unit 435.Specific implementation process and the 7th embodiment are identical substantially, are not described in detail.
The ninth embodiment of the present invention is with the difference of the scheme of first embodiment:
This programme no longer is arranged on described first-class processing unit, second stream processing unit, stream crosspoint and first-class map unit and the second stream map unit in the same interface board of node C.In a second embodiment, the stream crosspoint is arranged in the center power board of node C, described first-class processing unit is separately positioned in the interface boards different among the node C with second stream processing unit, first-class map unit and the second stream map unit, as the first-class map unit and the second stream map unit are arranged in the wireline interface plate, the first-class processing unit and second stream processing unit are arranged in the WiMAX wireless interface oralia.
The WiMAX of center power board stream crosspoint supports between wired or WiMAX wireless interface oralia, the operation exchange between wired and WiMAX wireless interface oralia.
Situation during Application Example nine and the 7th embodiment are identical, are not described in detail.
The difference of the tenth embodiment provided by the invention and the 7th embodiment is: do not comprise the first-class map unit and the second stream map unit in the interface board of node C, for the stream crosspoint, only dispose the flow port between itself and the first-class processing unit and second stream processing unit, as Port1 among the figure and Port2 flow port.During Application Example ten, the user can only realize the business intercommunication between the different user station.Associated description among the specific implementation process and first embodiment is identical, is not described in detail.
Above-mentioned node A, Node B, node C both can be subscriber station, also can be the base station.
The embodiment that is provided by the invention described above as can be seen, system of the present invention supports the multi-way stream processing unit, as the WiMAX transceiver, and node A, Node B and node C can introduce stream processing unit, as the WiMAX transceiver, so just can set up Mesh (netted) structure as shown in Figure 5 easily, each WiMAX node can be radio interconnected in twos among the figure, and the multichannel WiMAX transceiver of each WiMAX node is by a plurality of frequency ranges, or with 802.16 subchannels (subchannel) different under the frequency range or subcarrier (subcarrier) group, or it is radio interconnected with other WiMAX node with burst group (burst) different under the frequency range or different frame (frame) (being the different time periods).
As seen from the above technical solution provided by the invention, the present invention includes stream processing unit and stream crosspoint; Described stream crosspoint receives the WiMAX stream that described stream processing unit is transmitted by the flow port of setting, and with the source connection identifier of described WiMAX stream is exchanged for described source connection identifier next jumps connection identifier, and spread by the flow port the set WiMAX after with described exchange and to give described stream processing unit, by the present invention, multiple switching technology unification can be a kind of switching technology, thereby make the wire transmission of WiMAX base station partly obtain simplifying, the interconnection line is few, has reduced cost; Only need define the mapping relations and the commutative relation of itself and WiMAX stream by the present invention, just can support the internodal intercommunication of different WiMAX, or user's business of networking, so system has favorable expansibility; By the present invention, only need to flow exchange with a WiMAX and just can realize the internodal intercommunication of different WiMAX, thereby reduced the different internodal intercommunication transmission delays of WiMAX through twice stream mapping; By the present invention, can realize directly intercommunication between different WiMAX subscriber stations, so when between WiMAX subscriber station and WiMAX base station obstruction being arranged, be WiMAX subscriber station and WiMAX base station can not realize information mutual communication the time, system WiMAX subscriber station can pass through another WiMAX subscriber station and the 3rd WiMAX subscriber station intercommunication; Thereby reduced the load of WiMAX base station; By the present invention, WiMAX subscriber station and another WiMAX base station intercommunication can be passed through in the WiMAX base station, and when switching in the sub-district, the WiMAX base station can be transferred to another WiMAX base station by the WiMAX subscriber station with the state of WiMAX stream.
In addition, by the present invention, can support the Mesh pattern of WiMAX node, i.e. the meshed wireless interconnection pattern of WiMAX node.
The above; only be the preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement; as; be not limited to described stream crosspoint; stream map unit or stream processing unit are arranged in same interface board of node; or be not limited to described stream crosspoint; stream map unit or stream processing unit are arranged in the distinct interface plate; or be not limited to described stream crosspoint is arranged in the power board of center, 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 kind of switching system that is used for the exchange of WiMAX stream is characterized in that, comprising:
Stream processing unit is used for handling and forwarding WiMAX stream;
The stream crosspoint, be used for receiving the WiMAX stream that described stream processing unit is transmitted by the flow port of setting, and with the source connection identifier of described WiMAX stream is exchanged for described source connection identifier next jumps connection identifier, and spread by the flow port the set WiMAX after with described exchange and to give described stream processing unit.
2, switching system according to claim 1 is characterized in that, described stream processing unit comprises:
The first-class processing unit and/or second stream processing unit;
Be used for the WiMAX stream that receiving end/sending end transmits,, described WiMAX spread give described stream crosspoint according to the flow port of the source connection identifier correspondence of the WiMAX stream that receives;
And/or, being used to receive the WiMAX stream that described stream crosspoint transmits, the described WiMAX after described WiMAX stream is handled and will be handled spreads and gives receiving terminal.
3, switching system according to claim 1 is characterized in that, the flow port between described stream crosspoint and described stream processing unit defines according to the Radio Resource of system's support.
4, switching system according to claim 3 is characterized in that, described Radio Resource comprises WiMAX website, sector, frequency and/or subchannel.
5, switching system according to claim 4 is characterized in that, also comprises:
Transmitting terminal stream map unit and transmitting terminal stream processing unit;
Described transmitting terminal stream map unit, be used for traffic frame, packet, cell or time slot that the receiving end/sending end user sends, and be corresponding WiMAX stream with described traffic frame, packet, cell or time slot mapping, described WiMAX is spread give the transmitting terminal stream processing unit then;
Described transmitting terminal stream processing unit is used for the WiMAX stream that receiving end/sending end stream map unit transmits, and sends to described first-class processing unit after described WiMAX stream handled.
6, switching system according to claim 4 is characterized in that, also comprises:
Receiving terminal stream processing unit and receiving terminal stream map unit;
Described receiving terminal stream processing unit is used to receive the WiMAX stream that described stream processing unit transmits, and after described WiMAX stream is handled, sends described receiving terminal stream map unit to;
Described receiving terminal stream map unit is used to receive the WiMAX stream that described receiving terminal stream processing unit transmits, and described WiMAX stream is mapped as corresponding business frame, packet, cell or time slot, sends the receiving terminal user to.
7, switching system according to claim 6 is characterized in that:
Described transmitting terminal stream processing unit and receiving terminal stream processing unit comprise that respectively MAC handles subelement, encrypts sub-layer processes subelement and physical layer process subelement;
The described first-class processing unit and second stream processing unit comprise the physical layer process subelement respectively and encrypt the sub-layer processes subelement;
The MAC of described transmitting terminal stream processing unit handles subelement and receives the WiMAX stream that described transmitting terminal stream map unit sends, then after encrypting the encryption of sub-layer processes subelement, by wireless channel, described WiMAX is spread the physical layer process subelement of giving described first-class processing unit by the physical layer process subelement of transmitting terminal stream processing unit; After the physical layer process subelement of described first-class processing unit is handled described WiMAX stream, then after the encryption sub-layer processes subelement of first-class processing unit is decrypted, described WiMAX is spread give described stream crosspoint;
After the physical layer process subelement of the described first-class processing unit or second stream processing unit receives the described WiMAX stream of stream crosspoint transmission, through encrypting the sub-layer processes subelement described WiMAX stream is encrypted, the physical treatment subelement that sends described receiving terminal stream processing unit to by wireless channel is handled then; Described WiMAX after the processing flows through after the encryption sublayer of described receiving terminal stream processing unit is decrypted, and handles subelement by the MAC of described receiving terminal stream processing unit and handles; Then described WiMAX is spread and give described receiving terminal stream map unit.
8, according to any described switching system of claim 1 to 6, it is characterized in that:
Also comprise a MAC processing unit and/or the 2nd MAC processing unit, and, the first-class map unit and/or the second stream map unit;
A described MAC processing unit or the 2nd MAC processing unit are used for receiving the WiMAX stream that described stream crosspoint transmits by the flow port of setting, and after described WiMAX stream handled, send the first-class map unit or the second stream map unit to;
The described first-class map unit or the second stream map unit are used to receive the WiMAX stream after the described MAC layer processing unit processes, and the mapping of described WiMAX stream is postbacked sending end user's traffic frame, send to higher level's processing unit then.
9, switching system according to claim 8 is characterized in that:
Flow port between described stream crosspoint and a described MAC layer processing unit and/or the 2nd MAC layer processing unit defines according to the external cable port of system.
10, switching system according to claim 9 is characterized in that:
The stream processing unit of described system is by a plurality of frequency ranges, or, radio interconnected with subchannels different under the frequency range, sub carrier group, different burst group or different frame and multichannel transmitting terminal stream processing unit and receiving terminal stream processing unit.
11, switching system according to claim 8 is characterized in that:
Described stream crosspoint, described first-class processing unit, second stream processing unit, and the first-class map unit and/or the second stream map unit are arranged in the interface board;
Or,
Described stream crosspoint is arranged in the power board of center, described first-class processing unit, second stream processing unit, and the described first-class map unit and/or the second stream map unit are separately positioned in the interface board; Described center power board and described interface board interconnect by core bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100801759A CN100450082C (en) | 2005-06-30 | 2005-06-30 | Exchange system for WiMAX steam exchanging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100801759A CN100450082C (en) | 2005-06-30 | 2005-06-30 | Exchange system for WiMAX steam exchanging |
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| CN1889513A true CN1889513A (en) | 2007-01-03 |
| CN100450082C CN100450082C (en) | 2009-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100801759A Expired - Fee Related CN100450082C (en) | 2005-06-30 | 2005-06-30 | Exchange system for WiMAX steam exchanging |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100420236C (en) * | 2005-04-29 | 2008-09-17 | 华为技术有限公司 | Switching system for WiMAX flows |
| CN102104937A (en) * | 2009-12-17 | 2011-06-22 | 中兴通讯股份有限公司 | Method and system for reducing power consumption under multi-frequency range group net |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0910224B1 (en) * | 1997-09-19 | 2007-06-06 | Hitachi, Ltd. | Apparatus and method for connection switching and control |
| CN1549610A (en) * | 2003-05-09 | 2004-11-24 | 北京三星通信技术研究有限公司 | Method for providing multi-stage insertion service in public insertion information channel |
| US20040255230A1 (en) * | 2003-06-10 | 2004-12-16 | Inching Chen | Configurable decoder |
| CN100420236C (en) * | 2005-04-29 | 2008-09-17 | 华为技术有限公司 | Switching system for WiMAX flows |
-
2005
- 2005-06-30 CN CNB2005100801759A patent/CN100450082C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100420236C (en) * | 2005-04-29 | 2008-09-17 | 华为技术有限公司 | Switching system for WiMAX flows |
| CN102104937A (en) * | 2009-12-17 | 2011-06-22 | 中兴通讯股份有限公司 | Method and system for reducing power consumption under multi-frequency range group net |
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| CN100450082C (en) | 2009-01-07 |
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