CN101277546B - RPU control protocol for light synthetic switch OIS network application supporting WiNAX multi-service transmission - Google Patents
RPU control protocol for light synthetic switch OIS network application supporting WiNAX multi-service transmission Download PDFInfo
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Abstract
The present invention provides a RPU control protocol applied in an optical integrated switching network technology supporting WiMAX(IEEE802.16e) multiple services transmission. In the OIS, the services are classified into 4 types, supporting different service types in WiMAX respectively. Two receiving end idle indication frames are distributed to each receiving end in the RPU control protocol; RPU0 and RPU1, RPU0 provides effective connection to the transmission circuit exchange service, supporting the zero service of WiMAX, token by the RPU0; other service data packet is defined to a burst packet, token by the RPU1. The RPU0 is a fixed bandwidth service server, having most priority. The switching technology and protocol ensures the collisionless conflict of the transmission wavelength, non-data transmission collision conflict of the source node, non-collision conflict of the data transmission in the middle node, non-data receiving collision conflict of the aim node.
Description
Technical field
The present invention relates to optical communication network and WiMAX wireless communication technology, relate in particular to and support WiMAX multiple services novel smooth integration switch OIS ring network technology and RPU control protocol thereof based on WDM.
Background technology
At WiMAX[IEEE Std802.16e] in, type of service is divided into 5 kinds, the 0th kind is the professional UGS of fixed-bandwidth, the 1st kind is the professional RT-VR of real-time variable bit rate, the 2nd kind is the professional NRT-VR of Non-Real Time Variable Bit Rate, the 3rd kind is Best-Effort service BE, the 4th kind of professional ERT-VR of the real-time variable bit rate for expansion.
The 0th kind of professional UGS fixed-bandwidth is professional, such as T1/E1; The 1st kind of professional RT-VR of business support real-time variable bit rate is such as the MPEG video traffic; The 2nd kind of professional NRT-VR supports to guarantee data rate but to the insensitive business of time delay; The 3rd kind of professional BE supports that data speed and time delay the Best-Effort service that does not require, such as Email; The 4th kind of professional ERT-VR support variable data rate has the business of requirement simultaneously to data speed and time delay, professional such as the VOIP with silence compression.
Along with the rapid growth of IP data service, IP over WDM becomes clear day by day as the core technology of future IP network.Light switching technology in the optical-fiber network mainly contains the exchange of circuit light (OCS), light packet switching (OPS) and the light burst-switched (OBS) of light at present.
Optical-fiber network based on OCS can be supported well to circuit-switched service, but efficient is very low when bearer IP service, and the miscellaneous service demand take data service as core sharply increases at present, so that telecommunications transmit network from traditional take the voice-over business as main to take bearing data service as main future development, the characteristics such as the asymmetry that data service has, dynamic, sudden, diversity are different from stable voice service characteristic fully, have proposed dynamically, carried out in real time the requirement that business provides to transmitting network.
Be support circuit switched service, IP Packet Service and following other business that may occur, OPS will be the following light switching technology of supporting miscellaneous service.OPS is a kind of fine-grained exchanging mechanism, because it allows statistic multiplexing network channel bandwidth resources etc., the data service that therefore is particularly suitable for happening suddenly.But do not have optical logic device at a high speed at present, do not have the random access storage device that resembles electric territory in the light territory.
In a word, although the circuit switching comparative maturity of light, it is not suitable for having paroxysmal IP data service.At present, OPS is faced with again the technology barrier that is difficult to overcome.In recent years, the foreign scholar has proposed a kind of new light switching technology: light burst-switched (OBS:Optical Burst Switching).OBS combines the advantage of OCS and OPS and has avoided their shortcoming, overcome the shortcoming of light path exchange (granularity is large, dumb, efficient low) and light packet switching (sun adjuster spare requires high, be difficult to realize), and take into account their advantage, have that bandwidth efficiency is high, throughput is high, be easy to the advantage such as realization, therefore at present research is very many.
OBS is take the light burst as cross-over unit, by in independent channel (generally being independent wavelength), transmitting control message in advance, in order to reserve the required resource of its corresponding burst packets, follow-up core node is in electric territory or light territory control message processing, reserve and the configuration related resource, the acknowledge messages such as burst packets does not need, by the good link of configured in advance, (full light) arrives destination node pellucidly, it by way of intermediate node do not need it is made any identification or relevant treatment, only it need to be carried out wavelength conversion, delay by pre-configured information.
In the OBS looped network, the OBS node becomes the data assembling from the WiMAX base station by burst packets (Burst), corresponding to each burst, forms a burst control packet (BCP), to carry the exchange of control information of this burst.A kind of important token (token) control protocol is arranged in the control protocol of OBS looped network, can solve the collision problem of receiver.The agreement here adopts many tokens to be used for the access protocol of WDM ring structure.Total N token, one corresponding to each destination node.A token or available, or be used.If a node has been caught j token, just can only send to destination node j.Transmit queue at each node is served in the mode of poll.
Under the token scheme, after node captures token, token is put into the FIFO buffer memory, queuing, can send data with transmit port after being discharged to, the data that if needed send just begin to send data to destination node corresponding to token, send the rear token that just discharges to next node etc. data.The Token Control agreement can solve the collision problem of receiver.
OBS has that bandwidth efficiency is high, throughput is high, be easy to the advantage such as realization, but this OBS has good performance to the circuit-switched service difficulty.
Summary of the invention
The object of the invention is to avoid above-mentioned deficiency, provide the RPU control protocol of using in a kind of light integration switch OIS network of novel support WiMAX multi-service transmission, in order to more effectively support the WiMAX multiple business.
Optical-fiber network mainly contains looped network and mesh network, a kind of looped network based on WDM of influences of the present invention, in the light integration switch looped network based on WDM, destination node solves the receiving port conflict with a plurality of receiving ports, and its receiving port can be realized quick wavelength selective reception to wavelength.
In supporting the multiple services OIS of WiMAX, type of service is divided 4 classes, the professional UGS of the 0th kind of fixed-bandwidth among the 0th class (class0) the business support WiMAX; The professional ERT-VR of real-time variable bit rate of the professional RT-VR of the 1st kind of real-time variable bit rate among the 1st class (class1) the business support WiMAX and the 4th kind of expansion; The professional NRT-VR of the 2nd kind of Non-Real Time Variable Bit Rate among the 2nd class (class2) the business support WiMAX; The 3rd kind of Best-Effort service BE among the 3rd class (class3) the business support WiMAX.
In order to realize purpose of the present invention, the present invention by the following technical solutions:
For supporting different business, the present invention proposes the RPU agreement of in light integration switch looped network, using.
In light integration switch (OIS) network, for each picks the idle indication of two receiving ports of port assignment frame (Receive Port Unoccupied Frame): RPU0 and RPU1.
In the RPU agreement, all kinds of business are all walked the RPU agreement, and RPU0 is for the transfer circuit reciprocal exchange of business provides effective connection, and it supports the 0th kind of business of WiMAX, uses the RPU0 token; Other business data packet is defined as burst packets, uses the RPU1 token.
RPU0 is the fixed-bandwidth business service, and priority is the highest.This scheme can be utilized the network bandwidth better, circuit-switched service is provided the service of guarantee.Receiving port is to all kinds of professional without conflict.Business is classified, and the situation of more realistic network carrying miscellaneous service makes OIS more have practicality, more has competitiveness than OCS, OBS network.
The environment of this protocol application is based on the unidirectional looped network of the OIS of WDM, and n node arranged, and each node can connect several WiMAX base station.Wavelength Assignment: n * m+1 wavelength arranged in the OIS looped network, and wherein n * m wavelength is used for passing the data burst bag, and the n * m+1 wavelength is used for the Bearer Control frame, and each node distributes fixedly time slot.Control frame with method of synchronization operation, has corresponding n * m the WDM wavelength of n * m transmit port in the whole OIS looped network in the whole network, each OIS node has the different wavelength of the corresponding WDM of m data transmit port, m optionally connected receiving end mouth.This m is used for the sending and receiving burst packets to receiving light outlets.Node can be with the local wavelength of any one free time, and an idle receiving port can any one wavelength that sends of selective reception.Each node has m receiving port, and the corresponding RPU0 of each receiving port and a RPU1 have a selective reception equipment before m data receiving port of destination node, is used for a lower road m data wavelength and a control channel wavelength.
Each OIS node connects several WiMAX base stations, from Access Network to the looped network direction, the OIS node converges buffer memory queuing transmission to the data of Access Network by type of service, according to destination node, convergence in different packets, packet with the form transmission of light, does not need through electro-optical conversion at intermediate node in looped network.From the looped network to the Access Network, the OIS node need to select the packet of reception, issues corresponding Access Network through electric treatment.
The transmission of control signal takies a control channel wavelength specially, to the looped network of n node, n * 4 * m control slot is arranged, n node arranged in the looped network, and each node has m receiving port, and each receiving port distributes 4 control slots, comprise RPU0, RPU1 and ACK, CF.
Each node has 4 * m control slot (comprising m RPU0, a m RPU1, a m acknowledgement frame ACK and m control frame CF) in control channel, have among each RPU0: the time slot that destination node receiving port number, RPU series number, type of service are designated as 0, offset time, existing 0 class business data packet transmission wavelength, existing 0 class business datum packet length, existing 0 class business data packet delivery time, existing 0 class business take etc.; Have among each RPU1: destination node receiving port number, RPU series number, type of service, offset time, existing 0 class is professional and other business datum burst packets transmission wavelength, length, delivery time, the time slot that takies etc.Time slot that each ACK acknowledgement frame comprises that destination node receiving port number, RPU0 series number, type of service are designated as 0, offset time 1 and 2, the mark flag of oneself, data packet transmission wavelength, data packet length, 0 class business take etc.; Each CF control frame comprises time slot that destination node receiving port number, RPU1 series number, type of service, offset time 1 and 2, the mark flag of oneself, burst packets transmission wavelength, burst packets length, 0 class business take etc.The value of type of service is defined as: the 0th class business is 0, and first kind business is 1, and the Equations of The Second Kind business is 2, and the third window is 3, and not having data is 9.Offset time 1 is the intermediate node handles time, and offset time 2 is selected required wavelength swap time for wavelength selective reception equipment.Offset time does not comprise the transmission time from the source to the destination node.
This agreement solves the receiving port collision with RPU, and each node has m receiving port, and m corresponding RPU0 and m RPU1 are discharged in the looped network when starting in system.If a source node has data will send to certain destination node, at first catch the corresponding RPU that this destination node discharges according to type of service.It is the cycle that the data slot of receiving port is selected 125 μ s, is in order to adapt to existing telephone network (also comprising the SDH network).After sending node is caught RPU0, the time slot of reservation receiving port, the time slot reservation success is just set up the professional transmission of the 0th class and is connected.After the 0th class business connects, will take fixedly time slot in the cycle of each 125 μ s, this information writes among the RPU, after other business is caught RPU, can avoid this time slot, normally send packet, 0 class business is connection-oriented, is receiving port collisionless agreement to 0 class business.Could take time slot in non-zero class business to the professional node owing to only catching RPU1 of other class and send out burst packets to the receiving port of destination node corresponding to RPU1, the receiving port of destination node can only receive a burst packets at synchronization, and therefore this RPU agreement is receiving port collisionless agreement.
Because adopt said method, the present invention has the following advantages and effect:
In the light integration switch looped network based on WDM, destination node solves the receiving port conflict with a plurality of receiving ports, its receiving port can be realized quick wavelength selective reception to wavelength, adopt this agreement, the conflict of transmission wavelength collisionless, source node is countless according to sending collision conflict (this can solve by queuing), and transfer of data is conflicted in the intermediate node collisionless.
In supporting the multiple services OIS of WiMAX, type of service is divided 4 classes, the professional UGS of the 0th kind of fixed-bandwidth among the 0th class (class0) the business support WiMAX; The professional ERT-VR of real-time variable bit rate of the professional RT-VR of the 1st kind of real-time variable bit rate among the 1st class (class1) the business support WiMAX and the 4th kind of expansion; The professional NRT-VR of the 2nd kind of Non-Real Time Variable Bit Rate among the 2nd class (class2) the business support WiMAX; The 3rd kind of Best-Effort service BE among the 3rd class (class3) the business support WiMAX.The business of front is higher than the service priority of back.
In light integration switch (OIS) network, for each picks two receiving ports of port assignment idle indication frame: RPU0 and RPU1.In the RPU agreement, all kinds of business are all walked the RPU agreement, and RPU0 is for the transfer circuit reciprocal exchange of business provides effective connection, and it supports the 0th kind of business of WiMAX, uses the RPU0 token; Other business data packet is defined as burst packets, uses the RPU1 token.
RPU0 is the fixed-bandwidth business service, and priority is the highest.This agreement solves the receiving port collision with RPU, is receiving port collisionless agreement, and destination node is countless according to the Receiving collision conflict.
This scheme can be utilized the network bandwidth better, circuit-switched service is provided the service of guarantee.Receiving port is to all kinds of professional without conflict.Business is classified, OIS has extraordinary support to the multiple business of WiMAX, the situation of more realistic WiMAX network carrying miscellaneous service, make OIS more have practicality, more has competitiveness than OCS, OBS network, more go a step further to OPS than OBS, overcome OBS to circuit-switched service support ineffective, avoided simultaneously the high request of OPS sun adjuster spare.
Description of drawings
Fig. 1 is OIS ring network structure figure
OIS looped network node structure chart when Fig. 2 is m=2
Fig. 3 sends the agreement flow chart of class0 business datum
Fig. 4 sends the agreement flow chart of class1 business datum
Fig. 5 sends the agreement flow chart of class2 business datum
Fig. 6 sends the agreement flow chart of class3 business datum
Among the figure: OISN is the OIS looped network node, and OISR is the OIS looped network, and BS is the WiMAX base station, and CPL is coupler, and RxC is the control channel receiver, and TxC is the control channel reflector, and Rx is the data channel receiver, and Tx is the data channel reflector
Embodiment
Agreement of the present invention may further comprise the steps:
A. send the step of class0 business:
1. at the sending node end, node is monitored each control frame that receives.If it finds an available RPU0, it is deleted RPU0 from control frame, and RPU0 is put in the FIFO token queue of this node.If there is not class0 professional, to step 5, if there is class0 professional, to step 2.
2. check among the RPU0 and the corresponding receiving port time slot of RPU0 pond, whether the idle available time slot of the receiving port that network limits is arranged, and (time slot that non-class0 takies can be regarded free timeslot as, take time slot if run into low-grade business, can seize the low business time-slot of the grade of service, but can not be greater than the maximum class0 bandwidth of grid definition.Grid can define the class0 service bandwidth maximum of whole network according to resource situation, the maximum that also connects between the every a pair of node of definable.Idle available time slot: satisfy than the large free timeslot of the required time slot of data), if do not have, to step 5; If have, to step 3.
3. check local sending time slots, available free available sending time slots (as adds the bandwidth that required time slot is corresponding, is not more than the maximum bandwidth of the class0 business of network regulation, with regard to available free sending time slots, otherwise just do not have idle sending time slots.Idle available sending time slots: satisfy than sending the large idle sending time slots of the required time slot of data, time slot does not conflict with the receiving port free timeslot), if do not have, to step 5; If have, to step 4.
4. be scheduled to sending time slots, predetermined time slot information writes RPU0, to step 5.
5. discharge RPU0 to downstream node, if downstream node is not the corresponding receiving node of RPU0, to step 1.If the downstream node corresponding receiving node that is RPU0 is to step 6.
6. receive RPU0 with the corresponding receiving node port of RPU0, being arranged in this time slot according to gap information transmission control command to control wavelength selective reception equipment receives on the wavelength of carrying data, receive 0 class business datum according to predetermined time slot, and ensure that class0 business that different source nodes send receives by time slot in each 125 microsecond is the frame in cycle, 125 microseconds are that the frame in cycle defines for receiving node, different nodes take the different time-gap of frame, simultaneously, because the wavelength that different nodes send is different, receives with quick tunable filter filtering at receiving port.Only send out the 0 class business data packet (can comprise the frames such as a plurality of E1) of an OIS in the frame that per 125 microseconds are the cycle, support that the type0 of WiMAX is professional.To step 7.
7. receiving node sends an ACK information to source node.
8. receiving port writes RPU0 to the time slot arrangement information and discharges simultaneously to downstream node, receives also gap information to be write behind RPU1 and the CF and discharge to downstream node.
9. source node just begins to send the class0 business after receiving the ACK that contains reservation time slot successful information.The arrangement of transmit port sending time slots will diverge to the time slot of issuing other ports.
10. data are sent, and after source node receives RPU0, write RPU0 removing the information that this time connects, and discharge RPU0 to downstream node again.
11. after receiving node is received RPU0, send control command to control wavelength selective reception equipment, discharge the connection control of this time slot
12. the time slot pond release information of this time slot from RPU0 is write RPU0 and ACK discharges simultaneously to downstream node, receives and also time slot release information is write behind RPU1 and the CF and discharge to downstream node.To step 1.
The agreement flow chart that sends the class0 business datum is seen Fig. 3.
B. send the step of class1 business:
1. at the sending node end, node is monitored each control frame that receives.If it finds an available RPU1, it is deleted RPU1 from control frame, and RPU1 is put in the FIFO token queue of this node.If there is not class1 professional, to step 7, if there is class1 professional, to step 2.
2. look into and see if there is the idle available time slot of receiving port (the receiving port free timeslot here refers to non-class0, and 1 time slot that takies can be seized the low business time-slot of the grade of service, but can not be greater than the maximum class1 bandwidth of grid definition.Grid can define the class1 service bandwidth maximum of whole network according to resource situation, the maximum that also connects between the every a pair of node of definable.Idle available time slot: satisfy than the large free timeslot of the required time slot of burst packets), if do not have, to step 7, if having, to step 3.
3. look into the local idle available sending time slots that sees if there is network and limit and (add the bandwidth that required time slot is corresponding if having the professional shared bandwidth of class1, be not more than the maximum bandwidth of the class1 business of network regulation, just think available free sending time slots, otherwise just think there is not idle sending time slots.Idle available sending time slots: satisfy than sending the large idle sending time slots of the required time slot of burst packets, time slot does not conflict with the receiving port free timeslot), if do not have, to step 7; If have, to step 4, write RPU1 taking gap information simultaneously, RPU1 processes (with step 4 parallel processing) to step 7.
4. sending node arrives step 5 to used gap information write control information CF and transmission through offset time.
5. send the class1 data.Each RPU1 that intercepts and captures, it can be the 1 class business burst bag (each 1 class business burst bag can comprise the frames such as a plurality of MPEG) that sends a plurality of OIS in the frame in cycle in 125 different microseconds, only send out the 1 class business burst bag of an OIS in the frame that per 125 microseconds are the cycle, as long as satisfy the maximum that total bandwidth is no more than the network regulation.Support the type1 of WiMAX, type4.
6. after receiving node receives CF, send control command to control wavelength selective reception equipment, receive 1 class business datum according to predetermined time slot.
7. whether have class2 business, if there is class2 professional, to step C if checking; If do not have class2 professional, to step 8.
8. whether have class3 business, if there is class3 professional, to step D if checking; If do not have class3 professional, to step 9.
9. discharge RPU1 to downstream node, if downstream node is not the corresponding receiving node of RPU1, to step 1.If the downstream node corresponding receiving node that is RPU1 is to step 10.
10. the class0 business of receiving node is taken the information such as time slot and write RPU1, to step 1.
The agreement flow chart that sends the class1 business datum is seen Fig. 4.
C. send the step of class2 business:
1. (present, have the class2 professional) look into and see if there is the idle available time slot of receiving port (the receiving port free timeslot here refers to non-class0,1,2 time slot that takies, can seize the low business time-slot of the grade of service, but can not be greater than the maximum class2 bandwidth of grid definition.Grid can define the class2 service bandwidth maximum of whole network according to resource situation, the maximum that also connects between the every a pair of node of definable.Idle available time slot: satisfy than the large free timeslot of the required time slot of burst packets), if do not have, to step 6, if having, to step 2.
2. look into the local idle available sending time slots that sees if there is network and limit and (add the bandwidth that required time slot is corresponding if having the professional shared bandwidth of class2, be not more than the maximum bandwidth of the class2 business of network regulation, just think available free sending time slots, otherwise just think there is not idle sending time slots.Idle available sending time slots: satisfy than sending the large idle sending time slots of the required time slot of burst packets, time slot does not conflict with the receiving port free timeslot), if do not have, to step 6; If have, to step 3, write RPU1 taking gap information simultaneously, RPU1 processes (with step 3 parallel processing) to step 6.
3. sending node arrives step 4 to used gap information write control information CF and transmission through offset time.
4. send the class2 data.Each RPU1 that intercepts and captures, can be the 2 class business burst bags (each 2 class business burst bag can comprise a plurality of 2 class traffic frames) that send a plurality of OIS in the frame in cycle in 125 different microseconds, only send out the 2 class business burst bags of an OIS in the frame that per 125 microseconds are the cycle, as long as satisfy the maximum that total bandwidth is no more than the network regulation.Support the type2 of WiMAX.
5. after receiving node receives CF, send control command to control wavelength selective reception equipment, receive 2 class business datums according to predetermined time slot.
6. whether have class3 business, if there is class3 professional, to step D if checking; If do not have class3 professional, to step 7.
7. discharge RPU1 to downstream node, if downstream node is not the corresponding receiving node of RPU1, to step B.If the downstream node corresponding receiving node that is RPU1 is to step 8.
8. the class0 business of receiving node is taken the information such as time slot and write RPU1, to step B.
The agreement flow chart that sends the class2 business datum is seen Fig. 5.
D. send the step of class3 business:
1. (present, have class3 professional) looked into and seen if there is the idle available time slot of receiving port (the receiving port free timeslot here refers to non-class0,1,2,3 time slots that take, but can not be greater than the maximum class3 bandwidth of grid definition.Grid can define the class3 service bandwidth maximum of whole network according to resource situation, the maximum that also connects between the every a pair of node of definable.Idle available time slot: satisfy than the large free timeslot of the required time slot of burst packets), if do not have, to step 6, if having, to step 2.
2. look into the local idle available sending time slots that sees if there is network and limit and (add the bandwidth that required time slot is corresponding if having the professional shared bandwidth of class3, be not more than the maximum bandwidth of the class3 business of network regulation, just think available free sending time slots, otherwise just think there is not idle sending time slots.Idle available sending time slots: satisfy than sending the large idle sending time slots of the required time slot of burst packets, time slot does not conflict with the receiving port free timeslot), if do not have, to step 6; If have, to step 3, write RPU1 taking gap information simultaneously, RPU1 processes (with step 3 parallel processing) to step 6.
3. sending node arrives step 4 to used gap information write control information CF and transmission through offset time.
4. send the class3 data.Each RPU1 that intercepts and captures, can be the 3 class business burst bags (each 3 class business burst bag can comprise a plurality of 3 class traffic frames) that send a plurality of OIS in the frame in cycle in 125 different microseconds, only send out the 3 class business burst bags of an OIS in the frame that per 125 microseconds are the cycle, as long as satisfy the maximum that total bandwidth is no more than the network regulation.Support the type3 of WiMAX.
5. after receiving node receives CF, send control command to control wavelength selective reception equipment, receive 3 class business datums according to predetermined time slot.
6. discharge RPU1 to downstream node, if downstream node is not the corresponding receiving node of RPU1, to step B.If the downstream node corresponding receiving node that is RPU1 is to step 7.
7. the class0 business of receiving node is taken the information such as time slot and write RPU1, to step B.
The agreement flow chart that sends the class3 business datum is seen Fig. 6.
Claims (4)
1. the method for the RPU control protocol of a light integration switch OIS network application of supporting WiMAX multi-service transmission, it is characterized in that: in light integration switch OIS network, for each picks two receiving ports of port assignment idle indication frame: RPU0 and RPU1, in the RPU agreement, all kinds of business are all walked the RPU agreement, RPU0 is for the transfer circuit reciprocal exchange of business provides effective connection, and it supports the 0th kind of business of WiMAX, uses the RPU0 token; Other business data packet is defined as burst packets, uses the RPU1 token; RPU0 is the fixed-bandwidth business service, and priority is the highest; The transmission of control signal takies a control channel wavelength specially, looped network to n node, n * 4 * m control slot is arranged, n node arranged in the looped network, each node has m receiving port, the corresponding RPU0 of each receiving port and a RPU1 have a selective reception equipment before m data receiving port of destination node, be used for isolating m data wavelength and a control channel wavelength; Each receiving port distributes 4 control slots, comprises RPU0, RPU1 and acknowledgement frame ACK, control frame CF; In light integration switch OIS network, for each picks two receiving ports of port assignment idle indication frame: RPU0 and RPU1, in the RPU agreement, all kinds of business are all walked the RPU agreement, RPU0 is for the transfer circuit reciprocal exchange of business provides effective connection, and it supports the 0th kind of business of WiMAX, uses the RPU0 token; Other business data packet is defined as burst packets, uses the RPU1 token; Solve the receiving port collision with the RPU control protocol, each node has m receiving port, m corresponding RPU0 and m RPU1 are discharged in the looped network when starting in system, if a source node has data will send to certain destination node, at first catch the corresponding RPU0 that this destination node discharges according to type of service, after sending node is caught RPU0, the time slot of reservation receiving port, the time slot reservation success is just set up the professional transmission of the 0th class and is connected; After the 0th class business connects, will take fixedly time slot in each cycle, this information writes among the RPU0, after other business is caught RPU1, avoid the time slot that above-mentioned the 0th class business takies, normally send packet, 0 class business is connection-oriented, is receiving port collisionless agreement to 0 class business; Could take time slot in non-zero class business to the professional node owing to only catching RPU1 of other class and send out burst packets to the receiving port of destination node corresponding to RPU1, the receiving port of destination node can only receive a burst packets at synchronization.
2. the method for the RPU control protocol of the light integration switch OIS network application of support according to claim 1 WiMAX multi-service transmission, it is characterized in that: each node has 4 * m control slot in control channel, comprise m RPU0, m RPU1, m acknowledgement frame ACK, with m control frame CF, have among each RPU0: the destination node receiving port number, the RPU series number, type of service is designated as 0, offset time, existing 0 class business data packet transmission wavelength, existing 0 class business datum packet length, existing 0 class business data packet delivery time, the time slot that existing 0 class business takies; Have among each RPU1: destination node receiving port number, RPU series number, type of service, offset time, existing 0 class is professional and other business datum burst packets transmission wavelength, length, delivery time, the time slot that takies; The time slot that each ACK acknowledgement frame comprises that destination node receiving port number, RPU0 series number, type of service are designated as 0, offset time 1 and 2, the mark flag of oneself, data packet transmission wavelength, data packet length, 0 class business take; Each CF control frame comprises the time slot that destination node receiving port number, RPU1 series number, type of service, offset time 1 and 2, the mark flag of oneself, burst packets transmission wavelength, burst packets length, 0 class business take.
3. the method for the RPU control protocol of the light integration switch OIS network application of support according to claim 1 WiMAX multi-service transmission, it is characterized in that: the value of type of service is defined as: the 0th class business is 0, first kind business is 1, the Equations of The Second Kind business is 2, the third window is 3, and not having data is 9; Offset time 1 is the intermediate node handles time, and offset time 2 is selected required wavelength swap time for wavelength selective reception equipment; Offset time does not comprise the transmission time from the source to the destination node.
4. the method for the RPU control protocol of the light integration switch OIS network application of support according to claim 1 WiMAX multi-service transmission, it is characterized in that: it is the cycle that the data slot of receiving port is selected 125 μ s.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100909777A CN101277546B (en) | 2007-03-30 | 2007-03-30 | RPU control protocol for light synthetic switch OIS network application supporting WiNAX multi-service transmission |
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| CN2007100909777A CN101277546B (en) | 2007-03-30 | 2007-03-30 | RPU control protocol for light synthetic switch OIS network application supporting WiNAX multi-service transmission |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787516A (en) * | 2004-12-10 | 2006-06-14 | 北京邮电大学 | Novel ring network access controlling protocol |
| CN1791097A (en) * | 2004-12-15 | 2006-06-21 | 北京邮电大学 | RPF protocol applied in optical burst switching ring network based on WDM |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787516A (en) * | 2004-12-10 | 2006-06-14 | 北京邮电大学 | Novel ring network access controlling protocol |
| CN1791097A (en) * | 2004-12-15 | 2006-06-21 | 北京邮电大学 | RPF protocol applied in optical burst switching ring network based on WDM |
Non-Patent Citations (4)
| Title |
|---|
| Conference, 2006. AOE 2006. Asian》.2006, * |
| Hongxiang Wang 等.Implementation of Token-based Optical Burst Switching Ring Network Node and Testbed Using Fixed Transmitter and Tuneable Receiver.《Optical Fiber Communication & Optoelectronic Exposition & Conference, 2006. AOE 2006. Asian》.2006, |
| Hongxiang Wang 等.Implementation of Token-based Optical Burst Switching Ring Network Node and Testbed Using Fixed Transmitter and Tuneable Receiver.《Optical Fiber Communication & * |
| Optoelectronic Exposition & * |
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