CN102868610B - Data transmission method, the first operator's edge router and system - Google Patents
Data transmission method, the first operator's edge router and system Download PDFInfo
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- CN102868610B CN102868610B CN201210330122.8A CN201210330122A CN102868610B CN 102868610 B CN102868610 B CN 102868610B CN 201210330122 A CN201210330122 A CN 201210330122A CN 102868610 B CN102868610 B CN 102868610B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
Abstract
The embodiment of the invention discloses a kind of data transmission method, the first operator's edge router and system, relate to communication technical field, RRU and BBU can be effectively reduced and set up the too high problem of transfer passage cost, and maintenance cost can be effectively reduced. The implementation method of the present invention comprises: a PE and the 2nd PE sets up the pseudo-line of CPRI that pseudo-line type is CPRI type, described PE is connected with radio frequency remote unit RRU, described 2nd PE and BBU is connected, and a described PE and described 2nd PE is in multiprotocol label switching MPLS network; The CPRI data between described RRU and described BBU are transmitted by the pseudo-line of described CPRI. Embodiments of the invention are mainly used in the data transmission procedure between RRU and BBU.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of data transmission method, the first operator's edge router and system.
Background technology
In a wireless communication system, base station is grouped into by multiple function part, and wherein topmost two parts are Base Band Unit and radio frequency unit. Base Band Unit and the radio frequency unit of traditional base station integrate usually, cause base station architecture to close, are unfavorable for the technical progress in Base Band Unit and radio frequency unit field separately.
In order to make base station have open framework, a new generation base station adopts based on emulation common public radio interface (CommonPublicRadioInterface, CPRI) technology, Base Band Unit and radio frequency unit are separated, form the Base-Band Processing unit (BaseBandUnit being connected by optical fiber, and Remote Radio Unit (RadioRemoteUnit BBU), RRU), by the partial carrier wave of base station by the distributed networking of CPRI Interface realization of standard, adopt special CPRI data between Optical Fiber Transmission BBU and the RRU of CPRI transfer.
Realizing in the above-mentioned data transmission procedure based on CPRI, contriver finds that in prior art, at least there are the following problems:
Owing to optical fiber laid by needs between BBU and RRU, with special in CPRI transfer, when RRU disposes in a large number, optical fiber laying cost and optical fiber maintenance cost can be caused too high, especially, when RRU is connected with multiple BBU, needing RRU and multiple BBU to lay optical fiber respectively, it is higher that cost laid by optical fiber, in addition, also needing to be safeguarded by the optical fiber laid respectively, maintenance cost sharply increases.
Summary of the invention
Embodiments of the invention provide data transmission method, the first operator's edge router and system, and the optical fiber setting up transfer passage for solving RRU and BBU by laying optical fiber lays cost and the too high problem of maintenance cost.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, it provides a kind of data transmission method, described data transmission method comprises:
First operator edge router (ProviderEdge, PE) pseudo-line (PseudoWire is set up with the 2nd PE, PW) type is the pseudo-line of CPRI of CPRI type, a described PE and RRU is connected, described 2nd PE and BBU is connected, a described PE and described 2nd PE is in multiprotocol label switching (MultiProtocolLabelSwitch), MPLS) in network;
A described PE transmits the CPRI data between described RRU and described BBU by the pseudo-line of described CPRI.
In the first possible implementation of described first aspect, a described PE and the 2nd PE sets up the pseudo-line of CPRI that pseudo-line type is common public radio interface CPRI type, comprise: a described PE sends the first pseudo line tag mapping message by described MPLS network to described 2nd PE, described first pseudo line tag mapping message comprises the pseudo-line mark of CPRI of a described PE, the pseudo-line mark of the CPRI of described 2nd PE and the first pseudo line tag, so that described 2nd PE mates in described first pseudo line tag mapping message the pseudo-line mark of CPRI of described 2nd PE comprised, and after the match is successful, described first pseudo line tag comprised in described first pseudo line tag mapping message is stored, as from described 2nd PE to the pseudo line tag of a described PE.
In the first possible implementation of described first aspect, additionally provide the 2nd kind of possible implementation of described first aspect, in the 2nd kind of possible implementation of described first aspect, a described PE and the 2nd PE sets up the pseudo-line of CPRI that pseudo-line type is common public radio interface CPRI type, also comprise: a described PE receives the 2nd pseudo line tag mapping message of described 2nd PE transmission by described MPLS network, described 2nd pseudo line tag mapping message comprises the pseudo-line mark of CPRI of a PE, the pseudo-line mark of the CPRI of described 2nd PE and the 2nd pseudo line tag, a described PE mates in described 2nd pseudo line tag mapping message the pseudo-line mark of CPRI of the described PE comprised, if described, the match is successful, and described 2nd pseudo line tag comprised in described 2nd pseudo line tag mapping message is stored by a described PE, as from a described PE to the pseudo line tag of described 2nd PE.
In any one possible implementation above-mentioned of described first aspect, additionally provide the third possible implementation of described first aspect, in the third possible implementation of described first aspect, a described PE and the 2nd PE sets up the pseudo-line of CPRI that pseudo-line type is common public radio interface CPRI type, also comprising: if described coupling is unsuccessful, a described PE sends pseudo line tag release message by described MPLS network to described 2nd PE.
In the third possible implementation of the first possible implementation of described first aspect or the 2nd kind of possible implementation of described first aspect or described first aspect, additionally provide the 4th kind of possible implementation of described first aspect, in the 4th kind of possible implementation of described first aspect, described transmit the CPRI data between described RRU and described BBU by the pseudo-line of described CPRI, comprising: a described PE receives the CPRI data that described RRU sends; A described PE sends a CPRI message to described 2nd PE, a described CPRI message comprises described CPRI data and described 2nd pseudo line tag, so that described CPRI data are forwarded to described BBU by described 2nd PE after identifying described 2nd pseudo line tag.
In the 4th kind of possible implementation of the 2nd kind of possible implementation of described first aspect or the third possible implementation of described first aspect or described first aspect, additionally provide the 5th kind of possible implementation of described first aspect, in the 5th kind of possible implementation of described first aspect, described transmit the CPRI data between described RRU and described BBU by the pseudo-line of described CPRI, also comprise: a described PE receives the 2nd CPRI message that described 2nd PE sends, described 2nd CPRI message comprises the 2nd CPRI data and described first pseudo line tag,Described 2nd CPRI data are forwarded to described RRU after identifying described first pseudo line tag by a described PE.
Second aspect, it provides an a kind of PE, a described PE comprises:
Unit set up by pseudo-line, and for setting up, with the 2nd PE, the pseudo-line of CPRI that pseudo-line type is CPRI type, a described PE and RRU is connected, and described 2nd PE and BBU is connected, and a described PE and described 2nd PE is in multiprotocol label switching MPLS network;
Transmission unit, the CPRI data that the pseudo-line of described CPRI for setting up unit foundation by described pseudo-line transmits between described RRU and described BBU.
In conjunction with in the first possible implementation of described second aspect, described pseudo-line is set up unit and is comprised: set up subelement, for sending the first pseudo line tag mapping message by the MPLS network between a described PE and described 2nd PE to described 2nd PE, described first pseudo line tag mapping message comprises the pseudo-line mark of CPRI of a described PE, the pseudo-line mark of the CPRI of described 2nd PE and the first pseudo line tag, so that described 2nd PE mates in described first pseudo line tag mapping message the pseudo-line mark of CPRI of described 2nd PE comprised, and after the match is successful, described first pseudo line tag is stored, as from described 2nd PE to the pseudo line tag of a described PE.
In the first possible implementation of described second aspect, additionally provide the 2nd kind of possible implementation of described second aspect, in the 2nd kind of possible implementation of described second aspect, described pseudo-line is set up unit and is also comprised: the first reception subelement, for the 2nd pseudo line tag mapping message sent by described 2nd PE of described MPLS network reception, the pseudo-line of CPRI comprising a PE in described 2nd pseudo line tag mapping message identifies, the pseudo-line of CPRI of described 2nd PE identifies and the 2nd pseudo line tag; Coupling subelement, for mating the CPRI of the described PE comprised in described 2nd pseudo line tag mapping message, pseudo-line identifies. Tag storage subelement, for when the match is successful for described coupling subelement, described 2nd pseudo line tag comprised in the described 2nd pseudo line tag mapping message received by described first reception subelement stores, as from a described PE to the pseudo line tag of described 2nd PE.
In any one possible implementation above-mentioned of described second aspect, additionally provide the third possible implementation of described second aspect, in the third possible implementation of described first aspect, described pseudo-line is set up unit and is also comprised: label release subelement, for when described coupling subelement coupling is unsuccessful, sending pseudo line tag release message by described MPLS network to described 2nd PE.
In the third possible implementation of the first possible implementation of described second aspect or the 2nd kind of possible implementation of described second aspect or described second aspect, additionally provide the 4th kind of possible implementation of described second aspect, in the 4th kind of possible implementation of described second aspect, described transmission unit comprises: the 2nd reception subelement, for receiving the CPRI data that the described RRU being connected with a described PE sends; First transmission subelement, for sending a CPRI message to described 2nd PE, a described CPRI message comprises the described CPRI data and described 2nd pseudo line tag that obtains of described tag storage subelement that receive by described 2nd reception subelement, so that described CPRI data are forwarded to described BBU by described 2nd PE after identifying described 2nd pseudo line tag.
In the third possible implementation of the first possible implementation of described second aspect or the 2nd kind of possible implementation of described second aspect or described second aspect, additionally provide the 4th kind of possible implementation of described second aspect, in the 4th kind of possible implementation of described second aspect, described transmission unit also comprises: the 3rd reception subelement, for receiving the 2nd CPRI message that described 2nd PE sends, described 2nd CPRI message comprises the 2nd CPRI data and described first pseudo line tag; 2nd transmission subelement, for identifying described first pseudo line tag, and the described 2nd CPRI data received by described 3rd reception subelement forward to described RRU.
The third aspect, it provides a kind of data transmission system, described data transmission system comprises: first operator's edge router PE, the 2nd PE, radio frequency remote unit RRU and Base-Band Processing unit B BU; A described PE is connected with radio frequency remote unit RRU, and described 2nd PE is connected with Base-Band Processing unit B BU, and a described PE and described 2nd PE is in multiprotocol label switching MPLS network, wherein,
A described PE comprises:
Unit set up by first pseudo-line, for setting up, with described 2nd PE, the pseudo-line of CPRI that pseudo-line type is common public radio interface CPRI type;
First transmission unit, for setting up, by described first pseudo-line, the CPRI data that the pseudo-line of described CPRI that unit sets up transmits between described RRU and described BBU;
Described 2nd PE comprises:
Unit set up by 2nd pseudo-line, for setting up the pseudo-line of described CPRI with a described PE;
2nd transmission unit, for setting up, by described 2nd pseudo-line, the CPRI data that the pseudo-line of CPRI that unit sets up transmits between described RRU and described BBU;
Described RRU comprises:
First transmission unit, for sending CPRI data by a described PE and described 2nd PE to described BBU;
First reception unit, for receiving the CPRI data that described BBU is sent by described 2nd PE and a described PE;
Described BBU comprises:
2nd transmission unit, for sending CPRI data by a described 2nd PE and described PE to described RRU;
2nd reception unit, for receiving the CPRI data that described RRU is sent by a described PE and described 2nd PE.
The data transmission method that the embodiment of the present invention provides, one PE and system, the pseudo-line of CPRI that pseudo-line type is CPRI is set up by a PE and described 2nd PE, one PE is connected with RRU with BBU respectively with the 2nd PE, the CPRI data between described RRU and described BBU are transmitted by the pseudo-line of described CPRI, and prior art by laying optical fiber specially between BBU and RRU, technology for the CPRI data transmitted between RRU and BBU is compared, the transmission route between a PE and the 2nd PE can be utilized to set up the CPRI interface of emulation, multiplexing PE and the MPLS network that multiple business transmission can be carried, to realize CPRI transfer, do not need to lay special optical fiber between RRU and BBU, decrease specially for laying the laying cost of optical fiber between BBU and RRU, in addition, utilize the maintenance technology of MPLS network maturation can effectively reduce maintenance cost when carrying out CPRI transfer between BBU and RRU.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of data transmission method schematic flow sheet in the embodiment of the present invention;
Fig. 2 is a kind of stream compression schematic diagram in the embodiment of the present invention;
Fig. 3 is the first implementation schematic flow sheet of the data transmission method shown in Fig. 1;
Fig. 4 is the schematic flow sheet of the 2nd kind of implementation of the data transmission method shown in Fig. 1;
Fig. 5 is the schematic flow sheet of the third implementation of the data transmission method shown in Fig. 1;
Fig. 6 is the schematic flow sheet of the 4th kind of implementation of the data transmission method shown in Fig. 1;
Fig. 7 is the one in the embodiment of the present invention the one PE structural representation;
Fig. 8 is the structural representation of a kind of implementation of the PE shown in Fig. 7;
Fig. 9 is another kind in the embodiment of the present invention the one PE structural representation;
Figure 10 is the composition schematic diagram of a kind of data transmission system in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention's part embodiment, instead of whole embodiments. Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, the embodiment of the present invention provides a kind of data transmission method, and described method comprises:
101, a PE and the 2nd PE sets up the pseudo-line of CPRI that pseudo-line type is CPRI type, and a described PE is connected with radio frequency remote unit RRU, and described 2nd PE is connected with Base-Band Processing unit B BU, and a described PE and described 2nd PE is in MPLS network.
A described PE and the 2nd PE sets up the support that the pseudo-line of CPRI that pseudo-line type is CPRI type needs MPLS network, the CPRI data of the pseudo-line of the CPRI set up for transmitting between RRU and BBU, the pseudo-line that can also set up other types in certain MPLS network is for transmitting the business datum of other types, and this is not limited by the embodiment of the present invention. The method that described RRU and BBU is connected with a PE or the 2nd PE respectively can be that RRU is connected with a PE, and BBU is connected with the 2nd PE; Can also being that BBU is connected with a PE, RRU be connected with the 2nd PE. Concrete, RRU and BBU can be connected to the pseudo-line of described CPRI by AC (AttachmentCircuit, AC), is linked in MPLS network.
Such as, as shown in Figure 2, RRU is connected by AC with a PE, and BBU is connected by AC with the 2nd PE, sets up by a PE to the pseudo-line of CPRI in the 2nd PE direction and by the pseudo-line of CPRI of the 2nd PE to a PE direction. Due to a PE and the 2nd PE in an mpls network, therefore by being connected to, the pseudo-line of CPRI is also linked in MPLS network RRU and BBU. It should be appreciated that the position of RRU and BBU can also exchange in Fig. 2, the present embodiment repeats no more.
Certainly, the transfer of other equipment that other pseudo-lines are connected for a PE and the 2nd PE can also be set up between a PE with the 2nd PE, and the CPRI puppet line set up in the embodiment of the present invention is applicable to the CPRI data transmitted between described RRU and BBU.
102, a described PE transmits the CPRI data between described RRU and described BBU by the pseudo-line of described CPRI.
Wherein, CPRI data between described RRU and described BBU, it is possible to be the CPRI data that RRU is sent to BBU, it is also possible to be the CPRI data that BBU is sent to RRU. The pseudo-line of described CPRI is the designated lane transmitting described CPRI data, namely utilizes the pseudo-line of the CPRI between a PE and the 2nd PE set up, transmits the CPRI data between described RRU and described BBU.
The data transmission method that the embodiment of the present invention provides, the pseudo-line of CPRI that pseudo-line type is CPRI type is set up by a PE and described 2nd PE, by a PE and the 2nd PE respectively with RRU and BBU, the CPRI data between described RRU and described BBU are transmitted by the pseudo-line of described CPRI, and prior art by laying optical fiber specially between BBU and RRU, technology for the CPRI data transmitted between RRU and BBU is compared, the transmission route between a PE and the 2nd PE can be utilized to set up the CPRI interface of emulation, multiplexing PE and the MPLS network that multiple business transmission can be carried, to realize CPRI transfer, do not need to lay special optical fiber between RRU and BBU, decrease specially for laying the laying cost of optical fiber between BBU and RRU, in addition, utilize the maintenance technology of MPLS network maturation can effectively reduce maintenance cost when carrying out CPRI transfer between BBU and RRU.
See Fig. 2, the embodiment of the present invention also provides another kind of data transmission method, and described another kind of data transmission method is the refinement for the data transmission method described in Fig. 1, and described another kind of data transmission method comprises:
201, a PE sends the first pseudo line tag mapping message by MPLS network to described 2nd PE.
Wherein, described first pseudo line tag mapping message comprises CPRI type, the pseudo-line mark of the CPRI of a described PE, the pseudo-line mark of the CPRI of described 2nd PE and the first pseudo line tag, so that described 2nd PE mates in described first pseudo line tag mapping message the pseudo-line mark of described 2nd PE comprised, namely the pseudo-line mark of the described PE comprised in the first pseudo line tag mapping message is mated by the 2nd PE with the pseudo-line mark prestored on the 2nd PE, if the match is successful, then described first pseudo line tag comprised in described first pseudo line tag mapping message is stored by the 2nd PE, as pseudo-line type be CPRI type the pseudo-line of CPRI from described 2nd PE to a described PE pseudo line tag. like this, when follow-up 2nd PE sends CPRI message to a PE again, just can carrying this first pseudo line tag in CPRI message, the CPRI data in message just can be sent to RRU corresponding to the pseudo-line of this article of CPRI by a PE when receiving the CPRI message carrying this first pseudo line tag. wherein, the pseudo-line mark of the CPRI of described 2nd PE comprised in described first pseudo line tag mapping message is that a PE obtains in advance and stores, one PE can be carried out the pseudo-line mark of CPRI that manual configuration obtains described 2nd PE, it is also possible to be that pseudo-line identifies a PE by dynamically learning to obtain the CPRI of described 2nd PE.
It should be noted that, described first pseudo line tag mapping message comprises forwarding Class Type length value (ForwardingEquivalenceClassTypeLengthValue, FECTLV) of equal value and label TLV. Label TLV comprises pseudo line tag corresponding with the first pseudo line tag described in the embodiment of the present invention, FECTLV comprises FEC unit (FECElement). When the first pseudo line tag mapping message adopts general pseudo-line mark FEC unit, FEC unit comprises source access mark (SourceAccessIdentifier, SAI) and destination access mark (TargetAccessIdentifier, TAI), when a PE is sent as pseudo line tag mapping message to the 2nd PE, SAI with TAI is corresponding with the CPRI pseudo-line mark of the CPRI of a PE pseudo-line mark and the 2nd PE respectively;When the 2nd PE sends pseudo line tag mapping message to a PE, SAI with TAI is corresponding with the CPRI pseudo-line mark of the CPRI of the 2nd PE pseudo-line mark and a PE respectively. When the first pseudo line tag mapping message adopts pseudo-line mark FEC unit, FEC unit comprises pseudo-line mark (PseudoWireIdentification, PWID). The pseudo-line mark of the CPRI of a described PE and the 2nd PE is identical, i.e. PWID. Now, described pseudo line tag map information only comprises the pseudo-line mark of a CPRI. When the 2nd PE receives described pseudo line tag mapping message, by pseudo-for CPRI line mark compared with the local all pseudo-line mark stored, there is the pseudo-line mark of CPRI, then the match is successful, the pseudo-line mark binding of the CPRI of the pseudo-line of described CPRI and the 2nd PE end, the AC between the RRU that the pseudo-line of CPRI is connected with the 2nd PE simultaneously also establishes corresponding relation.
202, described 2nd PE receives the described first pseudo line tag mapping message of a described PE transmission by described MPLS network, and the pseudo-line of CPRI of CPRI pseudo-line mark and described 2nd PE that described first pseudo line tag mapping message comprises a described PE identifies and the first pseudo line tag.
203, described 2nd PE mates in described first pseudo line tag mapping message the pseudo-line mark of CPRI of described 2nd PE comprised. If described, the match is successful, then perform step 204; If described coupling is unsuccessful, then perform step 205.
Wherein, after described first pseudo line tag mapping message arrives described 2nd PE, 2nd PE checks pseudo-line marks all in the 2nd PE this locality storage, and the pseudo-line of CPRI that pseudo-line marks all in the storage of described this locality can comprise the puppet line mark of the CPRI from a PE and the 2nd PE identifies different other CPRI access marks. local for 2nd PE all CPRI access mark line mark pseudo-in the CPRI of described 2nd PE comprised in described first pseudo line tag mapping message compare, identical CPRI access mark is identified with the pseudo-line of the CPRI of described 2nd PE that comprises in described first pseudo line tag mapping message if found in described 2nd PE this locality stores, the pseudo-marking matched success of line of the CPRI of described 2nd PE then comprised in the described first pseudo line tag mapping message of described coupling, the first corresponding for this puppet line mark comprised in first pseudo line tag mapping message pseudo line tag is stored, complete the CPRI access mark binding of the pseudo-line of CPRI and the 2nd PE end, thus the RRU with the 2nd PE end establishes corresponding relation. identical pseudo-line mark is identified with the pseudo-line of the CPRI of described 2nd PE that comprises in described first pseudo line tag map information if do not found in described 2nd PE this locality stores, the pseudo-line of the CPRI of described 2nd PE then comprised in the described first pseudo line tag mapping message of described coupling is marking matched unsuccessful, the pseudo-line of CPRI not with the CPRI access mark binding of the 2nd PE end.
204, described first pseudo line tag comprised in described first pseudo line tag mapping message is stored by described 2nd PE, as from a described PE to the pseudo line tag of described 2nd PE.
Wherein, after described 2nd PE mates in described first pseudo line tag mapping message the marking matched success of pseudo-line of the described PE comprised, described first pseudo line tag comprised in described first pseudo line tag mapping message is stored in the storage unit of the 2nd PE, and using described first pseudo line tag that stores as the pseudo-line of CPRI from a described PE to the pseudo line tag of described 2nd PE.Now, the pseudo-line mark binding of the CPRI of the pseudo-line of described CPRI and the 2nd PE end, the AC between the RRU that the pseudo-line of CPRI is connected with the 2nd PE simultaneously also establishes corresponding relation, has set up to the pseudo-line of CPRI in a PE direction by the 2nd PE.
205, described 2nd PE sends pseudo line tag release message by described MPLS network to a described PE.
Wherein, the pseudo-line mating in described first pseudo line tag mapping message described 2nd PE comprised as described 2nd PE marking matched unsuccessful after, 2nd PE does not store in described first pseudo line tag mapping message described first pseudo line tag comprised, and send pseudo line tag release message to a described PE, notify that a described PE no longer sends described first pseudo line tag mapping message to described 2nd PE, can not set up by the CPRI pseudo-line of the 2nd PE to a PE direction.
It should be noted that, set up the pseudo-line of CPRI and comprise foundation from a PE to the pseudo-line of the CPRI in the 2nd PE direction with from the 2nd PE to the pseudo-line of the CPRI in a PE direction. Set up and there is no sequencing from a PE to the pseudo-line of the CPRI in the 2nd PE direction with from the 2nd PE to the pseudo-line of the CPRI in a PE direction. Wherein, described in step 201-205 is described by the pseudo-line process of establishing of the 2nd PE to a PE direction, described set up to the pseudo-line of CPRI in a PE direction by the 2nd PE after, also need to set up by the CPRI pseudo-line of a PE to the 2nd PE direction, as shown in Figure 4, described foundation by a PE to the process of establishing of the pseudo-line of CPRI in the 2nd PE direction as described in step 206-210.
It is understandable that, owing to the pseudo line tag on each PE can configure in local region, therefore the first pseudo line tag described in step 201-205 is identical with the 2nd pseudo line tag possibility described in step 206-210 also may be different, and this is not limited by the embodiment of the present invention.
206, the 2nd PE sends the 2nd pseudo line tag mapping message by MPLS network to a described PE.
Wherein, the pseudo-line of CPRI of CPRI pseudo-line mark and described 2nd PE that described 2nd pseudo line tag mapping message comprises a described PE identifies and the 2nd pseudo line tag, so that a described PE mates in described 2nd pseudo line tag mapping message the pseudo-line mark of the described PE comprised, and after the match is successful, the described pseudo line tag that comprise in described 2nd pseudo line tag mapping message is stored, as pseudo-line type be CPRI type the pseudo-line of CPRI from a described PE to the pseudo line tag of described 2nd PE. The pseudo-line mark of the CPRI of the described PE comprised in described 2nd pseudo line tag mapping message, the pseudo-line mark of CPRI of a described PE can be obtained, it is also possible to be that pseudo-line identifies the 2nd PE by dynamically learning to obtain the CPRI of a described PE by the 2nd PE being carried out manual configuration.
207, a described PE receives the 2nd pseudo line tag mapping message of described 2nd PE transmission by described MPLS network, and the pseudo-line of CPRI of CPRI pseudo-line mark and described 2nd PE that described 2nd pseudo line tag mapping message comprises a PE identifies and the 2nd pseudo line tag.
208, a described PE mates in described 2nd pseudo line tag mapping message the pseudo-line mark of CPRI of the described PE comprised. If described, the match is successful, then perform step 209; If described coupling is unsuccessful, then perform step 210.
Wherein, after described 2nd pseudo line tag mapping message arrives a described PE, one PE check a PE this locality store in all pseudo-line marks, described this locality store described in the pseudo-line mark that the has pseudo-line that can comprise the pseudo-line mark of the CPRI from a PE and the 2nd PE identify other different pseudo-lines marks.Pseudo-with the CPRI of the described PE comprised in described 2nd pseudo line tag mapping message for local for one PE all pseudo-lines mark line mark is compared, identical pseudo-line mark is identified, then the pseudo-marking matched success of line of the CPRI of the described PE comprised in the described 2nd pseudo line tag mapping message of described coupling with the pseudo-line of the CPRI of a described PE that comprises in described 2nd pseudo line tag mapping message if found in described PE this locality stores; Identify identical pseudo-line mark if do not found in described PE this locality stores with the pseudo-line of the CPRI of a described PE that comprises in described 2nd pseudo line tag map information, then the pseudo-line of the CPRI of the described PE comprised in the described 2nd pseudo line tag mapping message of described coupling is marking matched unsuccessful.
209, described 2nd pseudo line tag comprised in described 2nd pseudo line tag mapping message is stored by a described PE, as from a described PE to the pseudo line tag of described 2nd PE.
Wherein, after a described PE mates in described 2nd pseudo line tag mapping message the marking matched success of pseudo-line of described 2nd PE comprised, described 2nd pseudo line tag comprised in described 2nd pseudo line tag mapping message is stored in the storage unit of a PE, and using described 2nd pseudo line tag of described storage as the pseudo-line of described CPRI from a described PE to the pseudo line tag of described 2nd PE. Now, the line mark binding pseudo-in the CPRI of a PE end of the pseudo-line of described CPRI, the AC between the RRU that CPRI puppet line is connected with a PE simultaneously also establishes corresponding relation, described has set up to the pseudo-line in a PE direction by the 2nd PE.
210, a described PE sends pseudo line tag release message by described MPLS network to described 2nd PE.
Wherein, the pseudo-line mating in described 2nd pseudo line tag mapping message the described PE comprised as a described PE marking matched unsuccessful after, one PE does not store the pseudo-line mark of CPRI of the described PE comprised in described 2nd pseudo line tag mapping message, and send pseudo line tag release message to described 2nd PE, notify that described 2nd PE no longer sends described 2nd pseudo line tag mapping message to a described PE, can not set up by the CPRI pseudo-line of a PE to the 2nd PE direction.
In the present embodiment, after the pseudo-line of CPRI between a described PE and described 2nd PE is successfully established, by the pseudo-line of the CPRI between a described PE and described 2nd PE, CPRI data can be transmitted, described transmission CPRI data, as shown in Figure 5, it is possible to be send CPRI data by a PE to the 2nd PE, as described in step 211-215:
211, a described PE receives the CPRI data that the described RRU being connected with a described PE sends.
Wherein, owing to the pseudo-line of the CPRI between a described PE and the 2nd PE is set up, described RRU and described BBU is by the pseudo-line binding of the CPRI between AC and a described PE and the 2nd PE, and a described PE can directly receive the CPRI data that the described RRU being connected with a described PE sends by AC.
212, the described described CPRI data of PE encapsulation obtain a CPRI message.
Wherein, described encapsulation the one CPRI data can be that described packet switching network label is convenient to a described CPRI message and is transmitted in MPLS network by described CPRI data are stamped described 2nd pseudo line tag and packet switching network label.
213, a described PE sends a CPRI message to described 2nd PE, a described CPRI message comprises described CPRI data and described 2nd pseudo line tag, so that described 2nd PE is after identifying described 2nd pseudo line tag, described CPRI data are forwarded to described BBU.
214, described 2nd PE receives the CPRI message that a described PE sends, and comprises described CPRI data and described 2nd pseudo line tag in a described CPRI message.
Wherein, when a described PE arrives described 2nd PE to the CPRI message that described 2nd PE sends, described 2nd PE receives the described CPRI message that a described PE sends, the packet switching network label of a described CPRI message is removed by described 2nd PE, obtains only comprising a CPRI message of the 2nd pseudo line tag and CPRI data.
215, described 2nd PE identifies described 2nd pseudo line tag, and forwards described CPRI data to described BBU.
It should be noted that, after the pseudo-line of CPRI between a described PE and described 2nd PE is successfully established, by the pseudo-line of the CPRI between a described PE and described 2nd PE, CPRI data can be transmitted, described transmission CPRI data, as shown in Figure 6, it is also possible to be send CPRI data by the 2nd PE to a PE, as described in step 216-220:
216, described 2nd PE receives the 2nd CPRI data that the described RRU being connected with described 2nd PE sends.
Wherein, owing to the pseudo-line of the CPRI between a described PE and the 2nd PE is set up, described RRU and described BBU is by the pseudo-line binding of the CPRI between a described PE and the 2nd PE, and a described PE can directly receive the CPRI data that the described RRU being connected with a described PE sends by AC.
217, the described 2nd described 2nd CPRI data of PE encapsulation obtain the 2nd CPRI message.
Wherein, described encapsulation the 2nd CPRI data can be that described packet switching network label is convenient to described 2nd CPRI message and is transmitted in described MPLS network by described 2nd CPRI data are stamped described first pseudo line tag and packet switching network label.
218, described 2nd PE sends the 2nd CPRI message to a described PE, described 2nd CPRI message comprises described 2nd CPRI data and described first pseudo line tag, so that a described PE is identifying after described first pseudo line tag, described CPRI data are forwarded to described BBU.
219, a described PE receives the 2nd CPRI message that described 2nd PE sends, and comprises the 2nd CPRI data and described first pseudo line tag in described 2nd CPRI message.
Wherein, when described 2nd PE arrives a described PE to the 2nd CPRI message that a described PE sends, a described PE receives the described 2nd CPRI message that described 2nd PE sends, the packet switching network label of described 2nd CPRI message is removed by a described PE, obtains only comprising the 2nd CPRI message of the first pseudo line tag and the 2nd CPRI data.
220, a described PE identifies described first pseudo line tag, and forwards described 2nd CPRI data to the described BBU being connected with a described PE.
The data transmission method that the embodiment of the present invention provides, the pseudo-line of CPRI that pseudo-line type is CPRI type is set up by a PE and described 2nd PE, one PE is connected with RRU with BBU respectively with the 2nd PE, the CPRI data between described RRU and described BBU are transmitted by the pseudo-line of described CPRI, and prior art by laying optical fiber specially between BBU and RRU, technology for the CPRI data transmitted between RRU and BBU is compared, the transmission route between a PE and the 2nd PE can be utilized to set up the CPRI interface of emulation, multiplexing PE and the MPLS network that multiple business transmission can be carried, to realize CPRI transfer, do not need to spread between RRU and BBU and special establish optical fiber, decrease specially for laying the laying cost of optical fiber between BBU and RRU, in addition, utilize the maintenance technology of MPLS network maturation can effectively reduce maintenance cost when carrying out CPRI transfer between BBU and RRU.
See Fig. 7, the embodiment of the present invention also provides an a kind of PE30, and a described PE30 comprises: pseudo-line sets up unit 31, transmission unit 32.
Unit 31 set up by pseudo-line, for setting up, with the 2nd PE, the pseudo-line of CPRI that pseudo-line type is common public radio interface CPRI type, a described PE30 is connected with radio frequency remote unit RRU, described 2nd PE is connected with Base-Band Processing unit B BU, and a described PE30 and described 2nd PE is in MPLS network.
Transmission unit 32, the CPRI data that the pseudo-line of described CPRI for setting up unit 31 foundation by described pseudo-line transmits between described RRU and described BBU.
It should be noted that, described RRU and described BBU is linked in multiprotocol label switching MPLS network by the pseudo-line of described CPRI.
Further, as shown in Figure 8, described pseudo-line is set up unit 31 and can be comprised: set up subelement 311.
Set up subelement 311, for sending the first pseudo line tag mapping message by described MPLS network to described 2nd PE, described first pseudo line tag mapping message comprises the CPRI pseudo-line mark of a described PE30, the pseudo-line of CPRI of described 2nd PE identifies and the first pseudo line tag, so that described 2nd PE mates in described first pseudo line tag mapping message the pseudo-line mark of described 2nd PE comprised, and after the match is successful, described first pseudo line tag is stored, as from described 2nd PE to the pseudo line tag of a described PE30.
Further, as shown in Figure 8, described pseudo-line is set up unit 31 and can also be comprised: the first reception subelement 312, coupling subelement 313, tag storage subelement 314.
First reception subelement 312, the 2nd pseudo line tag mapping message sent by described 2nd PE of described MPLS network reception, described 2nd pseudo line tag mapping message comprises the CPRI pseudo-line mark of a PE30, the pseudo-line of CPRI of described 2nd PE identifies and the 2nd pseudo line tag;
Coupling subelement 313, mates the pseudo-line mark of CPRI of the described PE30 comprised in described 2nd pseudo line tag mapping message.
Tag storage subelement 314, for when the match is successful for described coupling subelement 313, described 2nd pseudo line tag comprised in the described 2nd pseudo line tag mapping message received by described first reception subelement 312 stores, as from a described PE30 to the pseudo line tag of described 2nd PE.
Further, as shown in Figure 8, described pseudo-line is set up unit 31 and can also be comprised: label release subelement 315.
Label release subelement 315, for when described coupling subelement 313 mates unsuccessful, sending pseudo line tag release message by described MPLS network to described 2nd PE.
Further, as shown in Figure 8, described transmission unit 32 can comprise: the 2nd reception subelement 321, first sends subelement 322.
2nd reception subelement 321, for receiving the CPRI data that the described RRU being connected with a described PE30 sends.
First transmission subelement 322, for sending a CPRI message to described 2nd PE, a described CPRI message comprises described 2nd pseudo line tag obtained by the described 2nd reception described CPRI data that receive of subelement 321 and described tag storage subelement 314, so that described CPRI data are forwarded to described BBU after identifying described 2nd pseudo line tag by described 2nd PE.
Further, as shown in Figure 8, described transmission unit 32 can also comprise: the 3rd reception subelement 323, the 2nd transmission subelement 324.
3rd reception subelement 323, for receiving the 2nd CPRI message that described 2nd PE sends, comprises the 2nd CPRI data and described first pseudo line tag in described 2nd CPRI message.
2nd transmission subelement 324, for identifying described first pseudo line tag, and the described 2nd CPRI data received by described 3rd reception subelement 323 forward to described RRU.
Can selection of land, a described PE30 can be exchange board or router or other network equipments.
Can selection of land, unit 31 set up by the pseudo-line of a described PE30 that the embodiment of the present invention provides, transmission unit 32 can merge into one or more unit; Described pseudo-line sets up the first reception subelement 312, coupling subelement 313, tag storage subelement 314 and label release subelement 315 that unit 31 comprises can merge into one or more unit; The 2nd reception subelement 321, first that described transmission unit 32 comprises sends subelement 322, the 3rd reception subelement 323 and the 2nd transmission subelement 324 can merge into one or more unit.
See Fig. 9, the embodiment of the present invention also provides another kind the one PE40, and a described PE40 comprises: transmitter 41, treater 43, receptor 42 and storer 44.
Treater 43, for setting up, with the 2nd PE, the pseudo-line of CPRI that pseudo-line type is common public radio interface CPRI type, a described PE40 is connected with radio frequency remote unit RRU, described 2nd PE is connected with Base-Band Processing unit B BU, and a described PE40 and described 2nd PE is in multiprotocol label switching MPLS network.
Transmitter 41 and receptor 42, the pseudo-line of the described CPRI for being set up by described treater 43 transmits the CPRI data between described RRU and described BBU.
Wherein, between a described PE40 and described 2nd PE, it is provided with multiprotocol label switching MPLS network; Described RRU and described BBU is connected in described MPLS network to transmit described CPRI data by the pseudo-line of described CPRI.
Further, described transmitter 41 also for: send the first pseudo line tag mapping message by the MPLS network between a described PE40 and described 2nd PE to described 2nd PE, described first pseudo line tag mapping message comprises the pseudo-line mark of CPRI of a described PE40, the pseudo-line mark of the CPRI of described 2nd PE and the first pseudo line tag, so that described 2nd PE mates in described first pseudo line tag mapping message the pseudo-line mark of CPRI of described 2nd PE comprised, and after the match is successful, described first pseudo line tag is stored, as from described 2nd PE to the pseudo line tag of a described PE40.
Described receptor 42, also for the 2nd pseudo line tag mapping message by the described 2nd PE transmission of the reception of MPLS network between a described PE40 and described 2nd PE, the pseudo-line of CPRI comprising a PE40 in described 2nd pseudo line tag mapping message identifies, the pseudo-line of CPRI of described 2nd PE identifies and the 2nd pseudo line tag.
Described treater 43, the pseudo-line mark of the CPRI of the described PE40 also comprised for mating in the 2nd pseudo line tag mapping message of described receptor 42 reception.
Described storer 44, for when the match is successful for described treater 43, storing described 2nd pseudo line tag comprised in described 2nd pseudo line tag mapping message, as from a described PE40 to the pseudo line tag of described 2nd PE.
Further, described transmitter 41, also for when the coupling of described treater 43 is unsuccessful, sending pseudo line tag release message by described MPLS network to described 2nd PE.
Further, described receptor 42, the CPRI data that the described RRU being also connected with a described PE40 for receiving sends; Described transmitter 41, also for sending a CPRI message to described 2nd PE, a described CPRI message comprises described CPRI data and described 2nd pseudo line tag, after described 2nd PE described 2nd pseudo line tag of identification, to forward described CPRI data to described BBU.
Further, described receptor 42, also for receiving the 2nd CPRI message that described 2nd PE sends, comprises the 2nd CPRI data and described first pseudo line tag in described 2nd CPRI message; Described treater 43, also for identifying described first pseudo line tag; Described transmitter 41, also for forwarding to the described BBU being connected with a described PE40 by described 2nd CPRI data.
Can selection of land, a described PE40 can be exchange board or router or other network equipments.
Can selection of land, the transmitter 41 of an above-mentioned PE40, treater 43, receptor 42 and storer 44 can be integrated into one or more independent circuit or hardware, as: application specific integrated circuit (English full name is ApplicationSpecificIntegratedCircuit, and English abbreviation is ASIC).
It should be noted that, the content that in the embodiment of the present invention, the specific descriptions of partial devices can be corresponding in reference method embodiment, the embodiment of the present invention repeats here no longer one by one.
The PE40 that the embodiment of the present invention provides, the pseudo-line of CPRI that pseudo-line type is CPRI type is set up by a PE40 and described 2nd PE, one PE40 is connected with RRU with BBU respectively with the 2nd PE, the CPRI data between described RRU and described BBU are transmitted by the pseudo-line of described CPRI, and prior art by laying optical fiber between BBU and RRU, technology for the CPRI data transmitted between RRU and BBU is compared, the transmission route between a PE40 and the 2nd PE can be utilized to set up the CPRI interface of emulation, multiplexing PE and the MPLS network that multiple business transmission can be carried, to realize CPRI transfer, do not need to lay special optical fiber between RRU and BBU, decrease specially for laying the laying cost of optical fiber between BBU and RRU, in addition, utilize the maintenance technology of MPLS network maturation can effectively reduce maintenance cost when carrying out CPRI transfer between BBU and RRU.
See Figure 10, the embodiment of the present invention also provides a kind of data transmission system 50, described data transmission system 50 comprises a PE51, the 2nd PE52, RRU53 and BBU54, a described PE51 and RRU53 is connected, described 2nd PE52 and BBU54 is connected, a described PE51 and described 2nd PE52 is in MPLS network, wherein
A described PE51 comprises: unit 511 set up by the first pseudo-line, for setting up, with described 2nd PE52, the pseudo-line of CPRI that pseudo-line type is common public radio interface CPRI type; First transmission unit 512, for setting up, by described first pseudo-line, the CPRI data that the pseudo-line of described CPRI that unit 511 sets up transmits between described RRU53 and described BBU54;
Described 2nd PE52 comprises: unit 521 set up by the 2nd pseudo-line, for setting up the pseudo-line of described CPRI with a described PE51; 2nd transmission unit 522, for setting up, by described 2nd pseudo-line, the CPRI data that the pseudo-line of CPRI that unit 521 sets up transmits between described RRU53 and described BBU54;
Described RRU53 comprises: the first transmission unit 531, for sending CPRI data by a described PE51 and described 2nd PE52 to described BBU54;First reception unit 532, for receiving the CPRI data that described BBU54 is sent by described 2nd PE and a described PE;
Described BBU54 comprises: the 2nd transmission unit 541, for sending CPRI data by a described 2nd PE52 and described PE51 to described RRU53; 2nd reception unit 542, for receiving the CPRI data that described RRU53 is sent by a described PE51 and described 2nd PE52.
As, in Figure 10, BBU54 is connected with the 2nd PE52, RRU53 is connected with a PE51, sets up the pseudo-line of CPRI between a PE51 and the 2nd PE52. Certainly, in Figure 10, the position of BBU53 and RRU54 can also exchange, and namely BBU54 is connected with a PE51, and RRU53 is connected with the 2nd PE52.
The data transmission system 50 that the embodiment of the present invention provides, the pseudo-line of CPRI that pseudo-line type is CPRI type is set up by a PE51 and described 2nd PE52, by a PE51 and the 2nd PE52 respectively with RRU53 and BBU54, the CPRI data between described RRU53 and described BBU54 are transmitted by the pseudo-line of described CPRI, and prior art by laying optical fiber specially between BBU and RRU, technology for the CPRI data transmitted between RRU and BBU is compared, the transmission route between a PE51 and the 2nd PE52 can be utilized to set up the CPRI interface of emulation, multiplexing PE and the MPLS network that multiple business transmission can be carried, to realize CPRI transfer, do not need to lay special optical fiber between RRU53 and BBU54, decrease specially for laying the laying cost of optical fiber between BBU54 and RRU53, in addition, utilize the maintenance technology of MPLS network maturation can effectively reduce maintenance cost when carrying out CPRI transfer between BBU54 and RRU53.
" first " that the PE that mentions in the embodiment of the present invention, the first pseudo line tag, the first pseudo line tag mapping message, CPRI data, a CPRI message, the first reception subelement, the first transmission subelement, the first pseudo-line are set up in unit, the first transmission unit, the first transmission unit and the first reception unit only is used to do name mark, does not represent first in order; " the 2nd " that 2nd PE, the 2nd pseudo line tag, the 2nd pseudo line tag mapping message, the 2nd CPRI data, the 2nd CPRI message, the 2nd reception subelement, the 2nd transmission subelement, the 2nd pseudo-line are set up in unit, the 2nd transmission unit, the 2nd transmission unit and the 2nd reception unit also only is used to do name mark, does not represent the 2nd in order.
One of ordinary skill in the art will appreciate that: all or part of step realizing aforesaid method embodiment can be completed by the hardware that programmed instruction is relevant, foregoing routine can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising aforesaid method embodiment; And aforesaid storage media comprises: read-only storage (Read-onlyMemory, ROM), random access memory (Random-AccessMemory, RAM), magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above embodiment is only in order to the technical scheme of exemplary explanation the present invention, it is not intended to limit; Although useful effect the present invention and the present invention brought with reference to previous embodiment has been described in detail, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein part technology feature is carried out equivalent replacement; And these amendments or replacement, do not make the scope of the essence disengaging the claims in the present invention of appropriate technical solution.
Claims (11)
1. a data transmission method, it is characterised in that, comprising:
First operator's edge router PE and the 2nd PE set up the pseudo-line of CPRI that pseudo-line type is common public radio interface CPRI type, a described PE is connected with radio frequency remote unit RRU, described 2nd PE is connected with Base-Band Processing unit B BU, and a described PE and described 2nd PE is in multiprotocol label switching MPLS network;
Wherein, a described PE and the 2nd PE sets up the pseudo-line of CPRI that pseudo-line type is CPRI type, comprising:
A described PE sends the first pseudo line tag mapping message by described MPLS network to described 2nd PE, the pseudo-line of CPRI comprising a described PE in described first pseudo line tag mapping message identifies, the pseudo-line of CPRI of described 2nd PE identifies and the first pseudo line tag, so that described 2nd PE mates in described first pseudo line tag mapping message the pseudo-line mark of CPRI of described 2nd PE comprised, and after the match is successful, described first pseudo line tag comprised in described first pseudo line tag mapping message is stored, as from described 2nd PE to the pseudo line tag of a described PE;
A described PE transmits the CPRI data between described RRU and described BBU by the pseudo-line of described CPRI.
2. data transmission method according to claim 1, it is characterised in that, described first operator's edge router PE and the 2nd PE set up the pseudo-line of CPRI that pseudo-line type is common public radio interface CPRI type, also comprise:
The 2nd pseudo line tag mapping message that a described PE is sent by described 2nd PE of described MPLS network reception, the pseudo-line of CPRI comprising a described PE in described 2nd pseudo line tag mapping message identifies, the pseudo-line of CPRI of described 2nd PE identifies and the 2nd pseudo line tag;
A described PE mates in described 2nd pseudo line tag mapping message the pseudo-line mark of CPRI of the described PE comprised;
If described, the match is successful, and described 2nd pseudo line tag comprised in described 2nd pseudo line tag mapping message is stored by a described PE, as from a described PE to the pseudo line tag of described 2nd PE.
3. data transmission method according to claim 2, it is characterised in that, described first operator's edge router PE and the 2nd PE set up the pseudo-line of CPRI that pseudo-line type is common public radio interface CPRI type, also comprise:
If the CPRI pseudo-line mark that a described PE mates in described 2nd pseudo line tag mapping message the described PE comprised is unsuccessful, a described PE sends pseudo line tag release message by described MPLS network to described 2nd PE.
4. data transmission method according to Claims 2 or 3, it is characterised in that, described transmit the CPRI data between described RRU and described BBU by the pseudo-line of described CPRI, comprising:
A described PE receives the CPRI data that described RRU sends;
A described PE sends a CPRI message to described 2nd PE, a described CPRI message comprises described CPRI data and described 2nd pseudo line tag, so that described 2nd PE is after identifying described 2nd pseudo line tag, described CPRI data are forwarded to described BBU.
5. data transmission method according to Claims 2 or 3, it is characterised in that, described transmit the CPRI data between described RRU and described BBU by the pseudo-line of described CPRI, also comprise:
A described PE receives the 2nd CPRI message that described 2nd PE sends, and comprises the 2nd CPRI data and described first pseudo line tag in described 2nd CPRI message;
Described 2nd CPRI data are forwarded to described RRU after identifying described first pseudo line tag by a described PE.
6. operator's edge router PE, it is characterised in that, comprising:
Unit set up by pseudo-line, for setting up, with the 2nd PE, the pseudo-line of CPRI that pseudo-line type is common public radio interface CPRI type, a described PE is connected with radio frequency remote unit RRU, described 2nd PE is connected with Base-Band Processing unit B BU, and a described PE and described 2nd PE is in multiprotocol label switching MPLS network;
Transmission unit, the CPRI data that the pseudo-line of described CPRI for setting up unit foundation by described pseudo-line transmits between described RRU and described BBU;
Wherein, described pseudo-line is set up unit and is comprised:
Set up subelement, for sending the first pseudo line tag mapping message by described MPLS network to described 2nd PE, the pseudo-line of CPRI comprising a described PE in described first pseudo line tag mapping message identifies, the pseudo-line of CPRI of described 2nd PE identifies and the first pseudo line tag, so that described 2nd PE mates in described first pseudo line tag mapping message the pseudo-line mark of CPRI of described 2nd PE comprised, and after the match is successful, described first pseudo line tag is stored, as from described 2nd PE to the pseudo line tag of a described PE.
7. a PE according to claim 6, it is characterised in that, described pseudo-line is set up unit and is also comprised:
First reception subelement, for the 2nd pseudo line tag mapping message sent by described 2nd PE of described MPLS network reception, the pseudo-line of CPRI comprising a described PE in described 2nd pseudo line tag mapping message identifies, the pseudo-line of CPRI of described 2nd PE identifies and the 2nd pseudo line tag;
Coupling subelement, for mating the CPRI of the described PE comprised in described 2nd pseudo line tag mapping message, pseudo-line identifies;
Tag storage subelement, for when the match is successful for described coupling subelement, described 2nd pseudo line tag comprised in the described 2nd pseudo line tag mapping message received by described first reception subelement stores, as from a described PE to the pseudo line tag of described 2nd PE.
8. a PE according to claim 7, it is characterised in that, described pseudo-line is set up unit and is also comprised:
Label release subelement, for when described coupling subelement coupling is unsuccessful, sending pseudo line tag release message by described MPLS network to described 2nd PE.
9. a PE according to claim 7 or 8, it is characterised in that, described transmission unit comprises:
2nd reception subelement, for receiving the CPRI data that described RRU sends;
First transmission subelement, for sending a CPRI message to described 2nd PE, a described CPRI message comprises the described CPRI data and described 2nd pseudo line tag that obtains of described tag storage subelement that receive by described 2nd reception subelement, so that described CPRI data are forwarded to described BBU by described 2nd PE after identifying described 2nd pseudo line tag.
10. a PE according to claim 7 or 8, it is characterised in that, described transmission unit also comprises:
3rd reception subelement, for receiving the 2nd CPRI message that described 2nd PE sends, comprises the 2nd CPRI data and described first pseudo line tag in described 2nd CPRI message;
2nd transmission subelement, for, after identifying described first pseudo line tag, the described 2nd CPRI data received by described 3rd reception subelement forward to described RRU.
11. 1 kinds of data transmission systems, it is characterised in that, described data transmission system comprises first operator's edge router PE, the 2nd PE, radio frequency remote unit RRU and Base-Band Processing unit B BU; A described PE is connected with radio frequency remote unit RRU, and described 2nd PE is connected with Base-Band Processing unit B BU, and a described PE and described 2nd PE is in multiprotocol label switching MPLS network, wherein,
A described PE comprises:
Unit set up by first pseudo-line, for setting up, with described 2nd PE, the pseudo-line of CPRI that pseudo-line type is common public radio interface CPRI type;Wherein, a described PE sends the first pseudo line tag mapping message by described MPLS network to described 2nd PE, described first pseudo line tag mapping message comprises the pseudo-line mark of CPRI of a described PE, the pseudo-line mark of the CPRI of described 2nd PE and the first pseudo line tag, so that described 2nd PE mates in described first pseudo line tag mapping message the pseudo-line mark of CPRI of described 2nd PE comprised, and after the match is successful, described first pseudo line tag comprised in described first pseudo line tag mapping message is stored, as from described 2nd PE to the pseudo line tag of a described PE,
First transmission unit, for setting up, by described first pseudo-line, the CPRI data that the pseudo-line of described CPRI that unit sets up transmits between described RRU and described BBU;
Described 2nd PE comprises:
Unit set up by 2nd pseudo-line, for setting up the pseudo-line of described CPRI with a described PE;
2nd transmission unit, for setting up, by described 2nd pseudo-line, the CPRI data that the pseudo-line of CPRI that unit sets up transmits between described RRU and described BBU;
Described RRU comprises:
First transmission unit, for sending CPRI data by a described PE and described 2nd PE to described BBU;
First reception unit, for receiving the CPRI data that described BBU is sent by described 2nd PE and a described PE;
Described BBU comprises:
2nd transmission unit, for sending CPRI data by a described 2nd PE and described PE to described RRU;
2nd reception unit, for receiving the CPRI data that described RRU is sent by a described PE and described 2nd PE.
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| CN201210330122.8A CN102868610B (en) | 2012-09-07 | 2012-09-07 | Data transmission method, the first operator's edge router and system |
| PCT/CN2013/075591 WO2014036840A1 (en) | 2012-09-07 | 2013-05-14 | Data transmission method, first provider edge router and system |
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| CN101640815A (en) * | 2008-07-29 | 2010-02-03 | 华为技术有限公司 | Remote transmission method, remote transmission device and remote transmission system for PON |
| CN102195870A (en) * | 2010-03-01 | 2011-09-21 | 中兴通讯股份有限公司 | Pseudo wire migrating method and device |
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| CN101552711B (en) * | 2008-04-03 | 2011-09-14 | 华为技术有限公司 | Method and device for establishing pseudowire mapping |
| CN101931548B (en) * | 2009-06-24 | 2012-09-19 | 华为技术有限公司 | Method, apparatus and system for label management of access network |
| JP2012147193A (en) * | 2011-01-11 | 2012-08-02 | Kyocera Corp | Base station system |
| CN102647813B (en) * | 2012-04-28 | 2014-12-17 | 华为技术有限公司 | Wireless communication method and distributed base station system |
| CN102868610B (en) * | 2012-09-07 | 2016-06-15 | 华为技术有限公司 | Data transmission method, the first operator's edge router and system |
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| CN101640815A (en) * | 2008-07-29 | 2010-02-03 | 华为技术有限公司 | Remote transmission method, remote transmission device and remote transmission system for PON |
| CN102195870A (en) * | 2010-03-01 | 2011-09-21 | 中兴通讯股份有限公司 | Pseudo wire migrating method and device |
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