CN101741712B - Device, system and method supporting base station data exchange - Google Patents
Device, system and method supporting base station data exchange Download PDFInfo
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- CN101741712B CN101741712B CN200810226397.0A CN200810226397A CN101741712B CN 101741712 B CN101741712 B CN 101741712B CN 200810226397 A CN200810226397 A CN 200810226397A CN 101741712 B CN101741712 B CN 101741712B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
- H04B10/272—Star-type networks or tree-type networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0071—Provisions for the electrical-optical layer interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/20—Interfaces between hierarchically similar devices between access points
Abstract
The invention provides a device, a system and a method supporting base station data exchange. The method mainly comprises the following steps of: pre-establishing an IP forwarding table, and receiving a data message sent by a source BS; querying the IP forwarding table according to a destination IP address, an entrance physical port or an entrance ONU port and an entrance PON service logical port of the data message so as to acquire an exit physical port and an exit PON service logical port of the data message; and forwarding the data message to a destination BS by using the exit physical port or an exit ONU port and the exit PON service logical port. By using the device, the system and the method, a PON network as a transmission network supports an X2 interface, and the direct intercommunication in the true sense in stead of the intercommunication through a wireless gateway between the BSes is realized.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of device, system and method for supporting base station data exchange.
Background technology
Long Term Evolution (Long Term Evolution, LTE) Organization Chart of network as shown in Figure 1, the two-layer flat network topology structure of LTE network using, mobile management entity (Mobility ManagementEntity wherein, MME) agreement of management chain of command is such as distribution, fail safe, authentication and the roaming control etc. of user terminal identification; The agreement of gateway (Serving Gateway, S-GW) leading subscriber face is such as stored user terminal context, encryption context etc.
In the structure of Universal Terrestrial Radio Access Network road (Universal Terrestrial Radio AccessNetwork, E-UTRAN), strengthen between the Node B (enhanced NodeB, eNB) and adopt X2 interface, be used for transmission switch data bag; Between eNodeB and A-GW, adopt the S1 interface.The LTE network is very high to the delay requirement of mobile bearer network, requires end-to-end time delay less than 10 milliseconds.
Interconnected (the World Interoperability for Microwave Access in the inserting of microwave whole world, WiMAX) the similar LTE network of the network architecture, the Access Network of WiMAX adopts two-layer configuration, by base station (Base Station, BS) and Access Network gateway (Access Service Network Gateway, ASN GW) consist of; Wherein, BS is corresponding to eNB, and access service network gateway (AccessService Network Gateway, A-GW) is corresponding to A-GW; BS adopts the R8 interface, is used for transmission switch data bag; Between BS and ASN GW, adopt the R6 interface.
For gigabit passive optical network (Gigabit Passive Optical Network, GPON) and GPON of future generation, PON service logic transmission pipeline is GEM port, adopts GPON packaged type (GPON Encapsulation Method, GEM) port-ID to identify.For ethernet passive optical network (Ethernet Passive Optical Network, EPON) and EPON of future generation, PON service logic transmission pipeline is LLID (Logical Link ldentifier, LLID) pipeline, adopts LLID to identify.At present, the main business bearing mode of PON has Ethernet over GEM (Ethernet bearing is in GEM) and IP over GEM (IP is carried on GEM).
When adopting the PON network, such as GPON (or EPON) or GPON of future generation (or EPON) during as the transmission network of above-mentioned U-TRAN network or WiMAX network, carry schematic diagram as shown in Figure 2 based on the mobile of PON, light path destination node (Optical Line Termination, OLT) when the packet of receiving from BS1, this packet can only be continued to be uploaded to radio network gateway, again by radio network gateway with this package forward to BS2, be equivalent to this PON network and can only support S1 interface (interface between BS and the radio network gateway), can not support X2 interface (interface between the BS).
How to make the above-mentioned PON network support X2 interface as transmission network, realize direct intercommunication truly between the BS, rather than by the radio network gateway intercommunication, be based on the mobile carrying problem anxious to be resolved of PON network.
Summary of the invention
Embodiments of the invention provide a kind of device, system and method for supporting base station data exchange, to solve the problem as the PON network support X2 interface of transmission network.
A kind of light path destination node OLT that supports base station data exchange comprises:
The PON dispensing unit is used for distributing the PON service logic port corresponding with the IP address of BS to base station BS, and described PON service logic port includes and goes out PON service logic port, for and the BS of described BS between communication interface interaction data message;
The IP retransmission unit, be used for the data message by described PON service logic port reception sources BS transmission, according to the purpose IP address of this data message, enter physical port or enter optical network unit ONU port and enter PON service logic port, the IP that inquiry is set up in advance transmits, obtain going out physical port or going out the ONU port, go out PON service logic port of described data message, utilize described go out physical port or go out the ONU port, go out PON service logic port with described data message forwarding to purpose BS.
A kind of BS comprises:
Switching treatmenting unit be used for to generate the data message that transmits between BS, with this data-message transmission to the IP retransmission unit;
The IP retransmission unit, purpose IP address for the data message that transmits according to described switching treatmenting unit, the IP that inquiry is set up in advance transmits, obtain described data message corresponding go out PON service logic port, and go out PON service logic port by this described data message sent to OLT.
A kind of system that supports base station data exchange comprises OLT, source BS and purpose BS, wherein,
Described source BS generates the data message that transmits between described source BS and described purpose BS, purpose IP address according to this data message, the IP that inquiry is set up in advance transmits, obtain described data message corresponding go out PON service logic port, and go out PON service logic port by this described data message sent to OLT;
The data message that described OLT reception sources BS sends, according to the purpose IP address of this data message, enter physical port or enter optical network unit ONU port and enter PON service logic port, the IP that inquiry is set up in advance transmits, obtain going out physical port or going out the ONU port, go out PON service logic port of described data message, utilize described go out physical port or go out the ONU port, go out PON service logic port with described data message forwarding to described purpose BS.
A kind of method of base station data exchange is set up in advance IP and is transmitted, and described method specifically comprises:
The data message that reception sources BS sends;
According to the purpose IP address of described data message, enter physical port or enter the ONU port and enter PON service logic port, inquiring about described IP transmits, obtain going out physical port, going out PON service logic port of described data message, utilize described go out physical port or go out the ONU port, go out PON service logic port with described data message forwarding to purpose BS.
Can be found out by the technical scheme that the embodiment of the invention described above provides, the embodiment of the invention is supported the data message of X2/R8, the transmission of S1/R6 interface by OLT, transmit based on the IP of the IP address of setting up BS with the PON service logic port that is used for the transmission of X2/R8 interface by the DHCP monitoring, utilize this IP to transmit the local exchange that has realized base station data, realize the intercommunication between the BS.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the configuration diagram of a kind of LTE network of the prior art;
Fig. 2 is a kind of mobile carrying schematic diagram based on PON of the prior art;
The structural representation of the PON system of a kind of OLT of support local exchange that Fig. 3 provides for the embodiment of the invention one;
The illustrative view of functional configuration of a kind of OLT that Fig. 4 provides for the embodiment of the invention two;
The illustrative view of functional configuration of the another kind of OLT that Fig. 5 provides for the embodiment of the invention two;
The illustrative view of functional configuration of a kind of BS that Fig. 6 provides for the embodiment of the invention two;
The illustrative view of functional configuration of the another kind of BS that Fig. 7 provides for the embodiment of the invention two;
The Signaling Processing Unit that Fig. 8 provides for the embodiment of the invention three is set up the process chart that the IP of X2/R8 interface transmits;
The data retransmission flow chart of a kind of OLT of realization local exchange that Fig. 9 provides for the embodiment of the invention three.
Embodiment
In the embodiment of the invention, OLT distributes the PON service logic port corresponding with the IP address of BS to BS, and described PON service logic port includes and goes out PON service logic port, for and the BS of described BS between communication interface interaction data message.
The data message that OLT sends by the described PON service logic port reception sources BS of entering, according to the purpose IP address of described data message, enter physical port or enter optical network unit (optical network unit, ONU) the ONU port, enter PON service logic port, the IP that inquiry is set up in advance transmits, obtain going out physical port or going out the ONU port, go out PON service logic port of described data message, utilize described go out physical port or go out the ONU port, go out PON service logic port with described data message forwarding to purpose BS.
Further, OLT intercepts the DHCP message between BS and the Dynamic Host Configuration Protocol server, obtains the IP address of described BS;
Described OLT sets up described IP and transmits according to IP address, the PON service logic port of described BS, comprises during described IP transmits: enter physical port or enter the ONU port, enter PON service logic port, destination address, go out physical port or go out the ONU port and go out PON service logic port.
Further, OLT sends the arp reply message of the MAC Address of carrying OLT by the ARP request message of described PON service logic port reception sources BS transmission to described source BS;
Described OLT is by described PON service logic port, receives the data message that described source BS sends over according to the MAC Address of described OLT, and the purpose recipient of described data message is purpose BS.
Further, described OLT is packaged in described data message the PON frame of the described PON of going out service logic port, goes out physical port or go out the ONU port described data message forwarding after will encapsulating to purpose BS by described.
Further, the MAC that sets up based on the PON service logic port of communication interface interaction data message between the BS of being used for of distributing of the IP address of BS, described OLT and described BS and radio network gateway by self study of OLT transmits;
OLT sends the arp reply message of the MAC Address of carrying radio network gateway by the ARP request message of described PON service logic port reception sources BS transmission to described source BS;
Described OLT receives the data message that described source BS sends over according to the MAC Address of described OLT and radio network gateway by described PON service logic port, and the purpose recipient of described data message is radio network gateway;
Described OLT enters physical port or enters the ONU port, enters the described MAC of PON service logic interface querying and transmit according to described data message, obtain going out physical port or going out the ONU port, go out PON service logic port of described data message, described data message is packaged in the PON frame of the described PON of going out service logic port, by described described data message forwarding after going out physical port and will encapsulating to radio network gateway.
Further, described OLT and BS adopt three layers of pass-through mode to support the data message of the communication interface transmission between the BS, and this data message adopts specific VLAN sign, adopts two layers of pass-through mode to support the data message of the communication interface transmission between BS and the radio network gateway;
Perhaps,
Described OLT and BS adopt IP over GEM mode to support the data message of the communication interface transmission between the BS, adopt ETH over GEM mode to support the data message of the communication interface transmission between BS and the radio network gateway.
For ease of the understanding to the embodiment of the invention, be further explained explanation below in conjunction with accompanying drawing as an example of several specific embodiments example, and each embodiment does not consist of the restriction to the embodiment of the invention.
Embodiment one
The structural representation of the PON system of a kind of OLT of support local exchange that this embodiment provides as shown in Figure 3.
In PON system shown in Figure 3, OLT supports the data message of X2/R8, the transmission of S1/R6 interface, divides the PON service logic port that is used in X2/R8, the transmission of S1/R6 interface to BS.OLT supports DHCP (Dynamic Host Co nfiguration Protocol, DHCP) monitor, monitor the IP address of distributing to BS by DHCP, foundation is transmitted based on the IP address of BS and the IP of PON service logic port, described PON service logic port includes and goes out PON service logic port, thereby realize the local exchange of base station data, to support the X2/R8 interface.In addition, OLT adopts two layers of pass-through mode to support the data message of S1/R6 interface transmission, and OLT remains unchanged to two layer service isolation features of the user data of S1/R6 interface.BS can embedded ONT, and the ONT ID that different B S is corresponding different, this ONT ID can be used as BS ID and use.
In realizing application, OLT can realize supporting by following two schemes the data message of X2/R8, the transmission of S1/R6 interface:
Embodiment two
For the scheme 1 in the above-mentioned enforcement one, the functional structure chart of a kind of OLT that this embodiment provides as shown in Figure 4, comprise: PON dispensing unit, IP retransmission unit, further, also comprise network side interface processing unit, PON interface unit, Signaling Processing Unit,, the functional unit such as MAC retransmission unit, the below introduces respectively the effect of each functional unit:
The PON interface unit, be used for the PON interface communication function between realization OLT and the BS, for GPON and GPON of future generation thereof, finish PON physical medium relevant layers function and GPON transmission convergence layer (GPON Transmission Converge, GTC) framing sublayer function in the PON protocol stack; For EPON and EPON of future generation thereof, finish EPON physical layer and data link layer functions.
Network side interface processing unit is for the communication function of realizing the network side interface between OLT and the radio network gateway.
The PON dispensing unit is used for realizing configuration PON service logic port (such as GEM Port/LLID port), and above-mentioned configuration operation comprises: set up, revise or deletion PON service logic port and relevant qos parameter thereof.Distribute the PON service logic port that be used for X2/R8 interface transmission corresponding with the IP address of BS or IPv6 address prefix and be used for the PON service logic port that the S1/R6 interface transmits to BS.
Signaling Processing Unit, be used for realizing the DHCP monitor function, and according to the IP address of the audible BS of distributing to of prison and for BS being used for of distributing PON service logic port that the X2/R8 interface transmits set up IP and transmit, comprise during described IP transmits: enter physical port or enter the ONU port, enter PON service logic port, go out physical port or go out the ONU port, go out PON service logic port and destination address.In addition, ARP Proxy function also can be supported in this unit, for from the ARP of X2/R8 interface request, with the MAC Address of OLT response to BS; For from the ARP of S1/R6 interface request, with the MAC Address of radio network gateway (such as AGW or ASN GW) response to BS.
Above-mentioned IP is transmitted as described in Table 1.
Table 1
| Inbound port/ONU port | Enter the service logic port | Destination address | DSCP | Outbound port/ONU port | Go out the service logic port | |
| 1 | | IP@1 | 1 | 2 | k | |
| 2 | | IP@2 | 2 | 2 | m | |
| Network-side port | - | IP@3 | 3 | 1 | 2 | |
| 2 | k+1 | IP@4 | 4 | Network-side port | - | |
| ...... |
The IP retransmission unit is used for based on PON service logic port, and the IP that sets up by Signaling Processing Unit transmits and carries out IP and transmit, and this IP transmits the data message mainly for the transmission of X2/R8 interface.The inbound port of above-mentioned IP retransmission unit or outbound port can be PON physical port, network-side port.When described OLT integrated during ONU, also can divide by the different ONU under the same PON physical port logic port of above-mentioned IP retransmission units, this logic port is called the ONU port, enters the ONU port or go out the ONU port to identify with ONU ID.In same operator management domain, the ONU ID of different ONU is different.The service logic port-mark is GEM port ID or LLID.
If the inbound port of above-mentioned IP retransmission unit or outbound port are network-side port, then enter PON service logic port or go out PON service logic port and will be left in the basket.The inbound port of above-mentioned IP retransmission unit and outbound port can be same port, namely realize three layers of forwarding in same PON port, this moment enter PON service logic port with go out PON service logic port can not be identical.
Take GPON as example, three layers of repeating process that the above-mentioned IP retransmission unit is finished are as follows:
When the IP of X2/R8 interface transmission grouping arrives OLT, the IP retransmission unit of OLT is according to the inbound port (as entering ONU ID=1) of above-mentioned IP grouping, enter PON service logic port (such as GPID=1) and destination address (such as IP@1), inquiring about the IP shown in the above-mentioned table 1 transmits, obtain outbound port (as going out ONUID=2) and go out PON service logic port (such as GPID=k), then the PON interface unit is to IP grouping interpolation GEM frame head, GEM PORT ID wherein goes out PON service logic port value (as such as GPID=k) for what inquiry obtained, then the GEM frame is sent by outbound port (as going out ONU ID=2).
The MAC retransmission unit is used for based on PON service logic port, transmits by MAC and carries out the MAC forwarding, and this MAC transmits the data message mainly for the transmission of S1/R6 interface.Above-mentioned MAC transmits the method that adopts the MAC self study and sets up.If the inbound port of above-mentioned MAC retransmission unit or outbound port are network-side port, then enter PON service logic port or go out PON service logic port and can be left in the basket.Above-mentioned MAC transmits as described in Table 2.
Table 2:PON-based MAC transmits
| Inbound port/ONU port | Enter the service logic port | Destination address | The VLAN sign | Outbound port/ONU port | Go out the service logic port |
| ONU1 | n | MAC@1 | VLAN1 | Network-side port | - |
| Network-side port | - | MAC@2 | VLAN2 | ONU2 | m |
| ...... |
The concrete processing procedure that above-mentioned MAC transmits is as follows:
At up direction, when the mac frame of S1/R6 interface transmission arrives OLT, the MAC retransmission unit of OLT according to the inbound port (as entering ONU ID=1) of mac frame, enter PON service logic port (such as GPID=n) and destination address (such as MAC@1), inquiring about the MAC shown in the above-mentioned table 2 transmits, obtain outbound port (as going out network-side port), then, by this outbound port (as going out network-side port) above-mentioned mac frame is sent.
At down direction, when the mac frame of S1/R6 interface transmission arrives OLT, the MAC retransmission unit of OLT is according to inbound port (as entering the network side ports) and the destination address (such as MAC 1) of mac frame, inquiring about the MAC shown in the above-mentioned table 2 transmits, obtain outbound port (as going out ONU ID=2), go out PON service logic port (such as GPID=m), then the PON interface unit adds the GEM frame head with mac frame, GEM PORT ID wherein be check in go out PON service logic port value (as such as GPID=m), then, by this outbound port (as going out ONU ID=2) above-mentioned mac frame is sent.
For the scheme 2 in the above-mentioned enforcement one, the functional structure chart of the another kind of OLT that this embodiment provides as shown in Figure 5, comprise: GPON interface unit, network side interface processing unit, optical network unit management and control interface (ONU Management and Control Interface, OMCI) functional units such as dispensing unit, Signaling Processing Unit, IP retransmission unit, MAC retransmission unit, the below introduces respectively the effect of each functional unit:
The GPON interface unit is used for the GPON interface communication function between realization OLT and the BS.For the PON service logic port of X2/R8 interface, realize IP over GEM function; For the PON service logic port of S1/R6 interface, realize ETH over GEM function.
The OMCI dispensing unit is used for realizing being used for GP configuring ON service logic port (such as the GEMPort/LLID port), and above-mentioned configuration operation comprises: set up, revise or deletion PON service logic port and relevant qos parameter thereof.
The function of the corresponding unit among the above-mentioned OLT shown in Figure 4 of network side interface processing unit, Signaling Processing Unit, IP retransmission unit and the function of MAC retransmission unit among the above-mentioned OLT shown in Figure 5 is identical.
For the scheme 1 in the above-mentioned enforcement one, the illustrative view of functional configuration of a kind of BS that this embodiment provides comprises as shown in Figure 6: wireless processing unit, switching treatmenting unit, Signaling Processing Unit, PON interface unit, PON dispensing unit, IP retransmission unit and MAC retransmission unit.The below introduces respectively the concrete function of unit.
The PON interface unit is used for the PON interface communication function between realization OLT and the BS, for GPON and GPON of future generation thereof, finishes PON physical medium relevant layers function and GTC framing sublayer function in the PON protocol stack; For EPON and EPON of future generation thereof, finish EPON physical layer and data link layer functions.
The PON dispensing unit is used for realizing configuration PON service logic port (such as GEM Port/LLID port), and above-mentioned configuration operation comprises: set up, revise or deletion PON service logic port and relevant qos parameter thereof.
Wireless processing unit be used for to be realized the wave point communication function between BS and the user terminal, generates the data message of S1/R6 interface, with this data-message transmission to the MAC retransmission unit.
Switching treatmenting unit be used for to be realized the wireless handoff functionality between the BS, generates the IP message of X2/R8 interface, with this IP message transmissions to the IP retransmission unit.
Signaling Processing Unit, be used for realizing the DHCP function as DHCP Client, and the IP address of distributing to BS that obtains according to dhcp process, and OLT is the PON service logic port that is used for the transmission of X2/R8 interface that BS distributes, set up IP and transmit, transmit according to this IP and can obtain PON service logic port corresponding to X2/R8 message that BS sends to OLT.This Signaling Processing Unit is also initiated the ARP request to the MAC retransmission unit, the corresponding MAC Address in purpose IP address of request X2/R8 message.
The IP retransmission unit is used for based on PON service logic port, and the IP that sets up by Signaling Processing Unit transmits the PON physical port that the X2/R8 message that transmits according to purpose IP address lookup switching treatmenting unit is corresponding, PON service logic port.Alternatively, by initiate the ARP request to the MAC retransmission unit, obtain the corresponding MAC Address in purpose IP address of above-mentioned X2/R8 message.Then, according to above-mentioned PON service logic port and MAC Address, above-mentioned X2/R8 message is sent to OLT by the PON interface unit.
The MAC retransmission unit is used for based on PON service logic port, and the data message of transmitting the S1/R6 interface that wireless processing unit transmits or OLT transmits by MAC carries out the MAC forwarding.Above-mentioned MAC transmits the method that adopts the MAC self study and sets up.If the inbound port of above-mentioned MAC retransmission unit or outbound port are user-side port (connecting such as user's frequency range or radio communication), then enter PON service logic port or go out PON service logic port and can be left in the basket.Above-mentioned MAC transmits can be as shown in Table 3 above.
Table 3:MAC transmits
| Inbound port/ONT mouth | Enter the service logic port | Destination address | The VLAN sign | Outbound port/ONT port | Go out the service logic port |
| ONT1 | n | MAC@1 | VLAN1 | User-side port | - |
| User-side port | - | MAC@2 | VLAN2 | ONT2 | m |
| ...... |
The concrete processing procedure that above-mentioned MAC transmits is as follows:
At up direction, when the mac frame of the data message of the S1/R6 interface that transmits when wireless processing unit arrives this unit, this unit according to the inbound port (as entering ONT ID=1) of mac frame, enter PON service logic port (such as GPID=n) and destination address (such as MAC@1), inquiring about the MAC shown in the above-mentioned table 3 transmits, obtain outbound port (as going out user-side port), then, by this outbound port (as going out user-side port) above-mentioned mac frame is sent to OLT by the PON interface unit.
At down direction, when the mac frame of the data message of the S1/R6 interface that transmits as OLT arrives this unit, this unit is according to inbound port (such as the access customer side ports) and the destination address (such as MAC@1) of mac frame, inquiring about the MAC shown in the above-mentioned table 3 transmits, obtain outbound port (as going out ONTID=2), go out PON service logic port (such as GPID=m), then the PON interface unit adds the GEM frame head with mac frame, GEM PORT ID wherein be check in go out PON service logic port value (as such as GPID=m), then, by this outbound port (as going out ONT ID=2) above-mentioned mac frame is sent.
For the scheme 2 in the above-mentioned enforcement one, the illustrative view of functional configuration of the another kind of BS that this embodiment provides as shown in Figure 7, comprise: IP retransmission unit, switching treatmenting unit also comprise Signaling Processing Unit, GPON interface unit, OMCl dispensing unit, wireless processing unit and MAC retransmission unit further.The below introduces respectively the concrete function of unit.
The OMCI dispensing unit is used for realizing being used for GP configuring ON service logic port (such as the GEMPort/LLID port), as setting up, revise or deletion PON service logic port and relevant qos parameter thereof.
The GPON interface unit is used for realizing GPON interface communication function, for the GPON service logic port of X2/R8 interface, realizes IP over GEM function; For the GPON service logic port of S1/R6 interface, realize ETH over GEM function.
The function of the corresponding unit among the above-mentioned BS shown in Figure 6 of wireless processing unit, switching treatmenting unit, Signaling Processing Unit, IP retransmission unit and the function of MAC retransmission unit among the above-mentioned BS shown in Figure 7 is identical.
Wireless processing unit be used for to be realized the wave point communication function between BS and the user terminal, generates the data message of S1/R6 interface, with this data-message transmission to the MAC retransmission unit.
Switching treatmenting unit be used for to be realized the wireless handoff functionality between the BS, generates the IP message of X2/R8 interface, with this IP message transmissions to the IP retransmission unit.
Signaling Processing Unit, be used for realizing the DHCP function as DHCP Client, and the IP address of distributing to BS that obtains according to dhcp process, and OLT is the GPON service logic port that is used for the transmission of X2/R8 interface that BS distributes, set up IP and transmit, transmit according to this IP and can obtain GPON service logic port corresponding to X2/R8 message that BS sends to OLT.This Signaling Processing Unit is also initiated the ARP request to the MAC retransmission unit, the corresponding MAC Address in purpose IP address of request X2/R8 message.
The IP retransmission unit is used for based on GPON service logic port, and the IP that sets up by Signaling Processing Unit transmits the GPON physical port that the X2/R8 message that transmits according to purpose IP address lookup switching treatmenting unit is corresponding, GPON service logic port.Alternatively, by initiate the ARP request to the MAC retransmission unit, obtain the corresponding MAC Address in purpose IP address of above-mentioned X2/R8 message.Then, according to above-mentioned GPON service logic port and MAC Address, above-mentioned X2/R8 message is sent to OLT by the GPON interface unit.
The MAC retransmission unit is used for based on PON service logic port, and the data message of transmitting the S1/R6 interface that wireless processing unit transmits or OLT transmits by MAC carries out the MAC forwarding.
Embodiment three
Signaling Processing Unit in above-described embodiment two that this embodiment provides is set up handling process that the IP of X2/R8 interface transmits as shown in Figure 8, comprises following treatment step:
The used PON service logic port (such as GEM port/LLID) of DHCP passage of step 81, OLT difference source of configuration BS and purpose BS.
Step 82, source BS and purpose BS are respectively and carry out the dhcp address assigning process between the OLT.
Source BS and purpose BS are respectively to Dynamic Host Configuration Protocol server IP address requesting or IPv6 address prefix, and Dynamic Host Configuration Protocol server carries out the dhcp address distribution or address prefix is appointed process, give source BS and purpose BS respectively distributing IP address or IPv6 address prefix.It is also different that common Dynamic Host Configuration Protocol server is distributed to the IPv6 address prefix of different B S.
Step 83, OLT realize DHCP Relay function transfer dhcp message, and the DHCP message between source BS and purpose BS and the Dynamic Host Configuration Protocol server is intercepted.
Step 84, OLT be by the OMCI agreement, respectively the corresponding PON service logic port that is used for the X2/R8 interface of the IP address that obtains of configuration and source BS and purpose BS or IPv6 address prefix and for the PON service logic port of S1/R6 interface.
Step 85, OLT (or its inner integrated ONU) detect audible IP address or the IPv6 address prefix of distributing to source BS and purpose BS according to DHCP, and according to the sign that OLT is the PON service logic port that is used for the X2/R8 interface of source BS and purpose BS configuration, set up corresponding IP and transmit.During transmitting, described IP comprises: enter physical port or enter optical network unit ONU port, enter PON service logic port, destination address, go out physical port or go out the ONU port and go out PON service logic port.
The data retransmission flow process of a kind of OLT of realization local exchange that this embodiment provides comprises following treatment step as shown in Figure 9:
Step 91, BS initiate the ARP request message by the PON service logic port that is used for the transmission of X2/R8 interface to OLT.
Step 92, OLT are according to PON service logic port-mark, and identifying above-mentioned ARP request message is from the X2/R8 interface, then reply arp reply message to BS with the MAC Address of OLT.
Step 93, BS initiate the ARP request message by the PON service logic port that is used for the transmission of S1/R6 interface to OLT.
Step 94, OLT are according to PON service logic port-mark, identifying above-mentioned ARP request message is from the S1/R6 interface, then reply arp reply message to BS with the MAC Address of radio network gateway, above-mentioned radio network gateway can be IAD (Access Gateway, AGW).
Step 95, when user terminal generation wireless area switches, BS receives the requirement of the user data that is buffered in source base station being transferred to the purpose base station by the X2/R8 interface.
Step 96, source base station are encapsulated into the corresponding PON frame that is used for the GEM PORT of X2/R8 interface transmission with the message of X2/R8 interface.
The message of step 97, the source base station X2/R8 interface after with above-mentioned encapsulation is sent to OLT, and for GPON and GPON of future generation, the message of the X2/R8 interface after the above-mentioned encapsulation can be sent to OLT by IP over GEM mode.
Step 98, OLT according to the purpose IP address (also can comprise DSCP) of the message of the X2/R8 interface that receives, enter physical port or enter the ONU port, enter PON service logic port, inquiring about described IP transmits, obtain going out physical port or going out the ONU port, go out PON service logic port of described data message, utilize described go out physical port or go out the ONU port, go out PON service logic port with described data message forwarding to purpose BS.
Step 99, OLT are encapsulated into the PON frame of inquiring about the PON service logic port that obtains with the message of the X2/R8 interface of reception.
The message of the X2/R8 interface after step 910, OLT will encapsulate is sent to purpose BS from corresponding outbound port, and for GPON and GPON of future generation, the message of the X2/R8 interface after the encapsulation can be sent to BS by IP overGEM mode.
Step 911, for the message of S1/R6 interface, BS is encapsulated into the corresponding PON frame that is used for the PON service logic port of S1/R6 interface transmission with it.The message of the S1/R6 interface after BS will encapsulate is sent to OLT, and for GPON and GPON of future generation, the S1/R6 message can be sent to OLT by ETH over GEM mode.
OLT carries out the MAC forwarding to the message of the S1/R6 interface of reception, mails to AGW.
Wherein, above-mentioned steps 91 and 92 is only for the scheme 2 in the above-mentioned enforcement one, and the scheme 2 in the above-mentioned enforcement one need not to use above-mentioned steps 91 and 92.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process such as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
In sum, the embodiment of the invention has realized that OLT supports the data message of X2/R8, the transmission of S1/R6 interface, and OLT divides the PON service logic port that is used in X2/R8, the transmission of S1/R6 interface to BS.Realized that OLT monitors the IP address that obtains BS by DHCP, and the IP of the IP address of setting up BS and the PON service logic port that is used for the transmission of X2/R8 interface transmits, utilize this IP to transmit the local exchange that has realized base station data, make the PON network support X2 interface as transmission network, realize direct intercommunication truly between the BS, rather than by the radio network gateway intercommunication.
The embodiment of the invention has realized that also it is that the MAC of the PON service logic port that is used for the communication interface transmission between BS and the radio network gateway that distributes of BS transmits that OLT sets up IP address, OLT based on BS by self study, transmits according to this MAC the data message that transmits between BS and the radio network gateway is transmitted.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (15)
1. a light path destination node OLT who supports base station data exchange is characterized in that, comprising:
The passive optical network PON dispensing unit, be used for distributing the PON service logic port corresponding with the IP address of BS to base station BS, described PON service logic port includes and goes out PON service logic port, be used for and the BS of described BS between communication interface interaction data message;
The IP retransmission unit, be used for the data message by described PON service logic port reception sources BS transmission, according to the purpose IP address of this data message, enter physical port or enter optical network unit ONU port and enter PON service logic port, the IP that inquiry is set up in advance transmits, obtain described data message go out physical port or go out the ONU port both one of and go out PON service logic port, utilize described go out physical port or go out the ONU port both one of and go out PON service logic port with described data message forwarding to purpose BS.
2. the light path destination node OLT of support base station data exchange according to claim 1 is characterized in that, described OLT also comprises:
Signaling Processing Unit, be used for realizing the dynamic host configuration protocol DHCP monitor function, and set up IP according to the prison IP address of audible BS and described PON service logic port and transmit, comprise during described IP transmits: enter physical port or enter the ONU port both one of, enter PON service logic port, purpose IP address, go out physical port or go out the ONU port both one of and go out PON service logic port.
3. the light path destination node OLT of support base station data exchange according to claim 1 is characterized in that, described OLT also comprises:
The MAC retransmission unit, be used for transmitting by the medium access control layer MAC that self study is set up based on the PON service logic port of communication interface interaction data message between the BS of being used for of distributing of the IP address of BS, described PON dispensing unit and described BS and radio network gateway, described PON service logic port includes and goes out PON service logic port;
The data message that described MAC retransmission unit reception sources BS sends, according to the purpose IP address of this data message, enter physical port or enter the ONU port and enter PON service logic port, inquiring about described MAC transmits, obtain described data message go out physical port or go out the ONU port both one of and go out PON service logic port, utilize described go out physical port or go out the ONU port both one of and go out PON service logic port with described data message forwarding to radio network gateway.
4. the light path destination node OLT of support base station data exchange according to claim 2 is characterized in that, described OLT also comprises:
The PON interface unit is used for the PON interface communication function between realization OLT and the BS;
Network side interface processing unit is for the communication function of realizing the network side interface between OLT and the radio network gateway.
5. the light path destination node OLT of support base station data exchange according to claim 4 is characterized in that:
Described Signaling Processing Unit is also supported address analysis protocol proxy ARP Proxy function, for the ARP request from the communication interface between the BS, returns the MAC Address of OLT as replying; For the ARP request from the communication interface between BS and the radio network gateway, return the MAC Address of radio network gateway as replying.
6. the light path destination node OLT of support base station data exchange according to claim 3 is characterized in that, described OLT also comprises:
The PON interface unit is used for the PON interface communication function between realization OLT and the BS;
Network side interface processing unit is for the communication function of realizing the network side interface between OLT and the radio network gateway.
7. the light path destination node OLT of support base station data exchange according to claim 6 is characterized in that:
Described IP retransmission unit adopt three layers of pass-through mode to support the data message of the communication interface transmission between the BS, and this data message adopts specific virtual LAN VLAN sign;
Described MAC retransmission unit adopts two layers of pass-through mode to support the data message of the communication interface transmission between BS and the radio network gateway;
Perhaps,
Described IP retransmission unit adopts IP to be carried on the data message that gigabit passive optical network packaged type IP over GEM mode is supported the communication interface transmission between the BS;
Described MAC retransmission unit adopts Ethernet bearing to support the data message of the communication interface transmission between BS and the radio network gateway in gigabit passive optical network packaged type ETH over GEM mode.
8. a BS is characterized in that, comprising:
Switching treatmenting unit be used for to generate the data message that transmits between BS, with this data-message transmission to the IP retransmission unit;
The IP retransmission unit, purpose IP address for the data message that transmits according to described switching treatmenting unit, the IP that inquiry is set up in advance transmits, obtain described data message corresponding go out PON service logic port, and go out PON service logic port by this described data message is sent to OLT, described PON service logic port is the PON service logic port of communication interface interaction data message between the BS of being used for of distributing of OLT and described BS, and described PON service logic port includes and goes out PON service logic port.
9. BS according to claim 8 is characterized in that, described BS also comprises:
Signaling Processing Unit, be used for obtaining the IP address that Dynamic Host Configuration Protocol server is distributed to BS by dhcp process, PON service logic port according to communication interface interaction data message between the BS of being used for of distributing of this IP address, OLT and described BS, set up IP and transmit, described PON service logic port includes and goes out PON service logic port.
10. BS according to claim 8 is characterized in that, described BS also comprises:
Wireless processing unit be used for to be realized the wave point communication function between BS and the radio network gateway, generates the data message that transmits between BS and radio network gateway, with this data-message transmission to the MAC retransmission unit;
The MAC retransmission unit, the MAC that is used for the PON service logic port of communication interface interaction data message between BS by self study being used for of setting up that IP address, OLT based on BS distribute and described BS and radio network gateway transmits, and described PON service logic port includes and goes out PON service logic port; The purpose IP address of the data message that transmits according to described wireless processing unit, inquire about described MAC transmit obtain described data message corresponding go out PON service logic port, go out PON service logic port by this described data message sent to radio network gateway.
11. according to claim 8 or 9 or 10 described BS, it is characterized in that, described BS also comprises:
The PON interface unit is used for the PON interface communication function between realization OLT and the BS;
The PON dispensing unit, be used for configuration OLT to communication interface interaction data message between the BS of being used for of distributing of BS and described BS, and the BS of described BS and radio network gateway between the PON service logic port of communication interface interaction data message, described PON service logic port includes and goes out PON service logic port.
12. a system that supports base station data exchange is characterized in that, comprises OLT, source BS and purpose BS, wherein,
Described source BS generates the data message that transmits between described source BS and described purpose BS, purpose IP address according to this data message, the IP that inquiry is set up in advance transmits, obtain described data message corresponding go out PON service logic port, and go out PON service logic port by this described data message is sent to OLT, described PON service logic port is the PON service logic port of communication interface interaction data message between the BS of being used for of distributing of OLT and described BS, and described PON service logic port includes and goes out PON service logic port;
The data message that described OLT reception sources BS sends, according to the purpose IP address of this data message, enter physical port or enter optical network unit ONU port and enter PON service logic port, the IP that inquiry is set up in advance transmits, obtain described data message go out physical port or go out the ONU port both one of and go out PON service logic port, utilize described go out physical port or go out the ONU port both one of and go out PON service logic port with described data message forwarding to described purpose BS.
13. the method for a base station data exchange is characterized in that, sets up in advance IP and transmits, described method specifically comprises:
The data message that reception sources BS sends;
Purpose IP address according to described data message, enter physical port or enter the ONU port, with enter PON service logic port, inquiring about described IP transmits, obtain described data message go out physical port or go out the ONU port both one of and go out PON service logic port, utilize described go out physical port or go out the ONU port both one of and go out PON service logic port with described data message forwarding to purpose BS, described PON service logic port is the PON service logic port of communication interface interaction data message between the BS of being used for of distributing of OLT and described BS, and described PON service logic port includes and goes out PON service logic port.
14. the method for base station data exchange according to claim 13 is characterized in that, the described IP that sets up in advance transmits, and specifically comprises:
Intercept the DHCP message between source BS and the Dynamic Host Configuration Protocol server, obtain the IP address of described source BS;
Be that described source BS distributes the PON service logic port corresponding with the IP address of described source BS, described PON service logic port includes and goes out PON service logic port, for and the BS of described BS between communication interface interaction data message;
Set up described IP and transmit according to the IP address of described BS, described PON service logic port, comprise during described IP transmits: enter physical port or enter the ONU port both one of, enter PON service logic port, destination address, go out physical port or go out the ONU port both one of and go out PON service logic port.
15. according to claim 13 or the method for 14 described base station data exchange, it is characterized in that, the data message that described reception sources BS sends specifically comprises:
The ARP request message that reception sources BS sends sends the arp reply message of the MAC Address of carrying OLT to described source BS;
Described OLT is by described PON service logic port, receives the data message that described source BS sends over according to the MAC Address of described OLT, and the purpose recipient of described data message is purpose BS.
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| CN200810226397.0A CN101741712B (en) | 2008-11-18 | 2008-11-18 | Device, system and method supporting base station data exchange |
| PCT/CN2009/074788 WO2010057414A1 (en) | 2008-11-18 | 2009-11-04 | Device, system and method for supporting data exchange of the base stations |
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| CN200810226397.0A CN101741712B (en) | 2008-11-18 | 2008-11-18 | Device, system and method supporting base station data exchange |
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| CN101977148B (en) * | 2010-10-26 | 2015-01-28 | 中兴通讯股份有限公司 | Data exchange method and system of node media servers of content delivery network |
| EP2475121A1 (en) * | 2011-01-10 | 2012-07-11 | Ntt Docomo, Inc. | Communication system and method for directly transmitting signals between nodes of a communication system |
| CN102739426B (en) * | 2011-04-13 | 2017-05-24 | 中兴通讯股份有限公司 | DPOE system and service auto-configuration method and network based on DPOE system |
| US10084694B2 (en) | 2011-12-29 | 2018-09-25 | Nokia Solutions And Networks Oy | Conveying traffic in a communications network system |
| WO2014205818A1 (en) * | 2013-06-28 | 2014-12-31 | 华为技术有限公司 | Link establishing method, apparatus and system |
| CN104581446B (en) * | 2013-10-14 | 2018-09-28 | 上海诺基亚贝尔股份有限公司 | The method and apparatus that direct communication between base stations are supported in PON system |
| WO2016106714A1 (en) * | 2014-12-31 | 2016-07-07 | 华为技术有限公司 | Data transmission method, apparatus and system |
| EP3182616A1 (en) * | 2015-12-17 | 2017-06-21 | Alcatel Lucent | Method, devices and system for endpoint communication |
| CN110191036B (en) * | 2019-07-02 | 2024-03-15 | 广东晨信科技有限公司 | Internet and private network fusion transmission system based on wireless access mode |
| CN113225628B (en) * | 2021-04-25 | 2023-02-10 | 中国移动通信集团陕西有限公司 | Business data configuration method, device, equipment and computer storage medium |
| CN117014743A (en) * | 2022-04-29 | 2023-11-07 | 华为技术有限公司 | Optical access equipment, optical access method and system |
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