CN105359423B - Data transmission method, equipment and the system of Radio Access Network - Google Patents

Data transmission method, equipment and the system of Radio Access Network Download PDF

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Publication number
CN105359423B
CN105359423B CN201380078002.6A CN201380078002A CN105359423B CN 105359423 B CN105359423 B CN 105359423B CN 201380078002 A CN201380078002 A CN 201380078002A CN 105359423 B CN105359423 B CN 105359423B
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multicast group
multicast
rru
message
interchanger
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CN105359423A (en
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戎璐
李波杰
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The embodiment of the invention provides data transmission method, equipment and the systems of a kind of Radio Access Network, it is related to mobile communications network field, the described method includes: multicast relations processing unit receives the multicast group configuration message that multicast control device is sent, the multicast group configuration message indicates the multicast group membership determined by the corresponding relationship of each collaboration set and each multicast group；The multicast relations processing unit is according to multicast group membership BH network element configuration muticast data transmission related to each multicast group.The multicast group membership determined according to each collaboration set in BH network with each multicast group corresponding relationship is sent to multicast relations processing unit by multicast control device by the present invention, it can BH network element configuration muticast data transmission related to each multicast group, the bandwidth for saving BH network reduces the advanced cooperation transmission technology such as C-RAN, CoMP to the bandwidth requirement of BH network.

Description

Data transmission method, equipment and the system of Radio Access Network
Technical field
The present invention relates to mobile communications network field, in particular to a kind of data transmission method of Radio Access Network is set Standby and system.
Background technique
C-RAN (Cloud-Radio Access Network, cloud wireless access network) be according to existing net condition and technology into The novel radio of the trend of step, proposition accesses net framework.C-RAN uses the baseband pool based on cloud framework, controls distributed RRU (Remote Radio Unit, remote radio unit (RRU)), so that the cooperation between cell is more convenient, it can be by large-scale CoMP (Coordinated Multi-point, cooperative multipoint transmission), therefore, the data transmissions of this Radio Access Network The interference of minizone is enough effectively reduced, promotes wireless network capacitance, improves marginal user performance, it is energy saving, cost etc. is reduced, But at the same time higher requirements are also raised for bandwidth of the C-RAN to BH (Backhaul, backhaul) network.
In the data transmission of the Radio Access Network of the prior art, the topology of BH network is more complicated, can be by multilayer The different structures such as chain, starlike, cyclic annular are composed, the transmission that can be jumped by up to more than ten from BBU pond to RRU.When BH net When there are multiple RRU to need to transmit data to user collaboration in network, need from BBU (Building Baseband Unit, indoor base Tape cell) data replicate more parts simultaneously by pond simultaneously, it is transferred to multiple RRU respectively, therefore need to pass in BH network Defeated data volume will significantly improve.
In the implementation of the present invention, the inventor finds that the existing technology has at least the following problems:
In BH network, the quantity of CoMP cooperation point is more, and the data volume for needing to transmit is bigger, wants to the bandwidth of BH Ask higher.In order to meet the needs of RRU data volume increases exponentially, it is necessary to replace the cable being laid on a large scale, implement Get up extremely difficult.Therefore, using the data transmission method of the wireless network of the prior art, C-RAN can not be made widely to apply In the limited actual deployment scene of BH network bandwidth resources.
Summary of the invention
In order to solve problems in the prior art, the embodiment of the invention provides a kind of transmission side datas of Radio Access Network Method, system and equipment.The technical solution is as follows:
In a first aspect, providing a kind of data transmission method of Radio Access Network, which comprises reception group Broadcast Control The multicast group configuration message that device processed is sent, the multicast group configuration message indicates corresponding with each multicast group by each collaboration set The multicast group membership that relationship determines, the corresponding relationship and multicast group membership are by the multicast control device or interior Base band device determines；According to multicast group membership backhaul network BH network element configuration multicast related to each multicast group Data transmission.
With reference to first aspect, in the first possible implementation of the first aspect, multicast group membership's packet The multicast group dependencies of the remote radio unit (RRU) RRU member are included, the multicast group configuration message is by carrying multicast group The serial number information of address information, the name information of multicast group or multicast group indicates the multicast group dependencies.
The possible implementation of with reference to first aspect the first, in second of possible implementation of first aspect In, it is described according to multicast group membership BH network element configuration muticast data transmission related to each multicast group, comprising: Its multicast group subjected is determined according to the multicast group membership；It is sent out according to the multicast group of the determination to multicast server Internet Group Management Protocol IGMP message is sent, request updates its multicast group dependencies, so that described in corresponding interchanger monitoring IGMP message, and multicast address is updated according to the IGMP message；The cooperative multi-point that reception is sent to the multicast group belonging to it passes Defeated CoMP data, the CoMP data are sent by indoor base band device according to the corresponding relationship of each collaboration set and each multicast group It is forwarded to the interchanger, and by the interchanger according to updated multicast address.
With reference to first aspect, in a third possible implementation of the first aspect, multicast group membership's packet The corresponding RRU member of each multicast group is included, the multicast group configuration message indicates that each multicast group is corresponding in the following way RRU member: by carrying multicast group address information, multicast group name information or multicast group serial number information, to indicate multicast group；It is logical Cross carry RRU address information, RRU Identity Code id information or RRU serial number information, come indicate the corresponding RRU of multicast group at Member.
The third possible implementation with reference to first aspect, in the 4th kind of possible implementation of first aspect In, it is described according to multicast group membership BH network element configuration muticast data transmission related to each multicast group, comprising: The control information based on open flows OF agreement is sent to interchanger according to the multicast group membership, indicates the exchange machine maintenance Change flow table, so that the interchanger turns after received multicast packet is forwarded or is replicated according to modified flow table Hair, until corresponding RRU member receives the multicast group data.
The 4th kind of possible implementation with reference to first aspect, in the 5th kind of possible implementation of first aspect In, the control information based on OF agreement is sent to interchanger according to the multicast group membership, indicates the interchanger modification Flow table, comprising: Xiang Suoshu interchanger sends control information, when indicating that the interchanger receives CoMP data, according to described The corresponding multicast group of the destination address of CoMP data is forwarded the CoMP data and/or replicates the CoMP data The medium access control MAC Address for the RRU member that the destination address is multicast group corresponding with the destination address is modified afterwards And it is sent to the RRU member；Or after the multicast control device sends multicast group configuration message to RRU member, to institute It states interchanger and sends control information, when indicating that the interchanger receives CoMP data, according to the destination of the CoMP data The corresponding multicast group in location is forwarded the CoMP data.
Second aspect provides a kind of Radio Access Network data transmission method, which comprises obtains multicast member Relationship；Multicast group configuration message is sent to multicast relations processing unit, so that the multicast relations processing unit is according to Multicast group membership's BH network element configuration muticast data transmission related to each multicast group, the multicast group configuration message refer to The multicast group membership determined by the corresponding relationship of each collaboration set and each multicast group is shown.
In conjunction with second aspect, in the first possible implementation of the second aspect, when the multicast group Automated generalization When device is open flow controller OFC, the BH network element includes remote radio unit (RRU) RRU member, the method also includes: to RRU member sends the multicast group configuration message.
In conjunction with the possible implementation of the first of second aspect or second aspect, second in second aspect is possible In implementation, the acquisition multicast group membership, comprising: the collaboration set relationship message that base band device is sent in receiving chamber； The corresponding relationship of each collaboration set and each multicast group is determined according to the collaboration set relationship message；According to each collaboration set with The corresponding relationship of each multicast group determines the multicast group membership.
In conjunction with second of possible implementation of second aspect, in the third possible implementation of second aspect In, the method also includes: message is sent to indoor base band device, informs indoor each collaboration set of base band device and each multicast The corresponding relationship of group, so that the interior base band device passes through according to the corresponding relationship of each collaboration set and each multicast group Interchanger sends CoMP data to each multicast group.
In conjunction with the possible implementation of the first of second aspect or second aspect, the 4th kind in second aspect is possible In implementation, the acquisition multicast group membership, comprising: the message that base band device is sent in receiving chamber, the message refer to The multicast group membership is shown.
The third aspect provides a kind of Radio Access Network data transmission method, which comprises obtain each collaboration set with The corresponding relationship of each multicast group；According to the corresponding relationship of each collaboration set and each multicast group, by interchanger to each multicast group Send cooperative multipoint transmission CoMP data.
In conjunction with the third aspect, in the first possible implementation of the third aspect, each collaboration set and each of obtaining The corresponding relationship of multicast group, comprising: determine the corresponding relationship of each collaboration set and each multicast group.
In conjunction with the first mode in the cards of the third aspect, in second of possible implementation of the third aspect In, the method also includes: the multicast group membership is determined according to the corresponding relationship of each collaboration set and each multicast group； Message is sent to multicast control device, indicates the multicast group membership, so that the multicast group control device is to multicast Automated generalization device sends multicast group configuration message, and the multicast group configuration message indicates the multicast group membership.
In conjunction with the third aspect, in the third possible realization weaving of the third aspect, each collaboration set and each of obtaining The corresponding relationship of multicast group, comprising: to multicast control device send collaboration set message so that the multicast control device according to The collaboration set relationship message determines the corresponding relationship of each collaboration set and each multicast group, determines institute according to the corresponding relationship Multicast group membership is stated, sends multicast group configuration message, the multicast group to multicast relations processing unit and/or RRU member Configuration message indicates the multicast group membership；The message that the multicast control device is sent is received, according to the message Determine the corresponding relationship of each collaboration set and each multicast group.
Fourth aspect provides a kind of multicast relations processing unit, comprising: receiving module, for receiving multicast control device The multicast group configuration message of transmission, the multicast group configuration message indicate true by the corresponding relationship of each collaboration set and each multicast group Fixed multicast group membership；Data processing module, for the phase according to the multicast group membership and each multicast group Backhaul network BH network element is closed to carry out data transmission.
In conjunction with fourth aspect, in the first possible implementation of the fourth aspect, the multicast relations processing unit For the equipment with remote radio unit (RRU) RRU function, the data processing module further include: multicast group determining module is used for root Multicast group belonging to the multicast relations processing unit is determined according to the multicast group membership；Sending module is used for multicast Server sends Internet Group Management Protocol IGMP message, and request updates its multicast group dependencies；The receiving module, is also used It is sent according to the corresponding relationship of each collaboration set and each multicast group to the multicast group belonging to it in base band device in receiving chamber Cooperative multipoint transmission CoMP data.
In conjunction with the first possible implementation of the 4th fermentation, in second of possible implementation of fourth aspect In, the multicast relations processing unit is server or the independent network equipment with open flow controller OFC function；It is described Data processing module further include: message processing module is assisted for being generated according to the multicast group membership based on open flows OF The control information of view, the control information are used to indicate interchanger modification flow table, specifically: indicate that the interchanger receives group When multicast data, according to the corresponding multicast group of the destination address of the multicast packet, the multicast packet is forwarded and/or is incited somebody to action The medium for the RRU member that the destination address is multicast group corresponding with the destination address is modified after the multicast packet duplication Access control MAC addresses are simultaneously sent to the RRU member；Or multicast group is sent to RRU member in the multicast control device After configuring message, when indicating that the interchanger receives multicast packet, according to the corresponding multicast group of the destination address of the data, The multicast packet is forwarded；Information sending module, for sending the control information to interchanger.
5th aspect, provides a kind of multicast control device, comprising: member relation obtains module, for obtaining by each cooperation The multicast group membership that collection and the corresponding relationship of each multicast group determine；Sending module is used for multicast relations processing unit, institute It states multicast group configuration message and indicates the multicast group membership.
In conjunction with the 5th aspect, in the first possible implementation of the 5th aspect, the sending module is also used to The multicast group configuration is sent to remote radio unit (RRU) RRU member when multicast relations processing unit is open flow controller OFC to disappear Breath.
In conjunction with the 5th aspect, in second of possible implementation of the 5th aspect, the member relation obtains module It include: receiving module, the collaboration set relationship message sent for base band device in receiving chamber；Multicast group membership determines mould Block, for determining the corresponding relationship of each collaboration set and each multicast group according to the collaboration set relationship message and according to described right It should be related to and determine the multicast group membership；The sending module is also used to send message to the indoor base band device, accuse Know the corresponding relationship of indoor base band device each collaboration set and each multicast group.
In conjunction with the 5th aspect, in the third possible implementation of the 5th aspect, the member relation obtains module It include: receiving module, for the message that base band device in receiving chamber is sent, the message indicates the multicast member and closes System.
In conjunction with the first or second or the third possible implementation of the 5th aspect or the 5th aspect, in the 5th side In the 4th kind of possible implementation in face, the multicast control device is independent the network equipment or is set to indoor base band dress Set or server on.
6th aspect provides a kind of indoor base band device, comprising: corresponding relationship obtains module, for obtaining each collaboration set With the corresponding relationship of each multicast group；Message processing module leads to for the corresponding relationship according to each collaboration set and each multicast group It crosses interchanger and sends cooperative multipoint transmission CoMP data to each multicast group.
In conjunction with the 6th aspect, in the first possible implementation of the 6th aspect, the corresponding relationship obtains module It include: multicast group relationship determination module, for determining the corresponding relationship of each collaboration set and each multicast group, according to the correspondence Relationship determines multicast group membership；Multicast group membership's sending module, it is described for sending message to multicast control device Message indicates the multicast group membership.
In conjunction with the 6th aspect, in second of possible implementation of the 6th aspect, the corresponding relationship obtains module Further include: collaboration set relationship sending module, for sending collaboration set message, the collaboration set relationship message to multicast control device Indicate remote radio unit (RRU) RRU member corresponding to each collaboration set；Receiving module, for receiving the multicast control device hair The message sent, the message indicate the corresponding relationship of each collaboration set and each multicast group.
7th aspect, provides a kind of Radio Access Network data transmission system, comprising: multicast control device, multicast relations Processing unit and related backhaul network BH network element；The multicast control device, for being sent to the multicast relations processing unit Multicast group configuration message, the multicast group configuration message indicate the group determined by the corresponding relationship of each collaboration set and each multicast group Broadcast group membership's relationship；The multicast relations processing unit, the message sent for receiving the multicast control device, according to described Message BH network element configuration muticast data transmission related to each multicast group；The correlation BH network element is used for and the multicast Automated generalization device configures muticast data transmission.
In conjunction with the 7th aspect, in the first possible implementation of the 7th aspect, the multicast relations processing unit For the equipment with remote radio unit (RRU) RRU function, the correlation BH network element includes interchanger, indoor base band device and multicast clothes Be engaged in device, the multicast relations processing unit, be also used to according to the multicast group membership determine it belonging to multicast group, and to The multicast server sends special net igmpinternet IGMP message, and request updates its multicast group dependencies；And for connecing Receive the cooperative multipoint transmission CoMP data of the interchanger forwarding；The interchanger, for listening to the multicast relations processing dress The IGMP message for setting transmission, updates its multicast address；It is also used to receive the CoMP that the indoor base band device is sent Data, and the COMP data are forwarded according to the multicast address；The interior base band device, for according to the cooperation The COMP data are sent to the interchanger by the corresponding relationship of collection and each multicast group.
In conjunction with the 7th aspect, in second of possible implementation of the 7th aspect, the multicast relations processing unit For the equipment of the open flow controller OFC function with open flows OF agreement defined, the correlation BH network element include interchanger, Indoor base band device and RRU member；The multicast relations processing unit, for according to the multicast group membership to interchanger The control information based on OF agreement is sent, indicates the interchanger modification flow table；The interchanger, for being believed according to the control Breath modification flow table；It is also used to when receiving the CoMP data that the indoor base band device is sent, according to the CoMP data The corresponding multicast group of destination address, to the CoMP data be forwarded and/or will the CoMP data duplication after modification described in Destination address is the address of the RRU member of multicast group corresponding with the destination address and is sent to the RRU member；The room The COMP data are sent to the friendship for the corresponding relationship according to the collaboration set and each multicast group by interior base band device It changes planes.
In conjunction with the 7th aspect, in the third possible implementation of the 7th aspect, the multicast relations processing unit For the equipment of the OFC function containing OF agreement defined, the correlation BH network element includes interchanger, indoor base band device and RRU Member；The multicast control device is also used to send multicast group configuration message to RRU member, informs belonging to the RRU member Multicast group；The multicast relations processing unit is based on OF agreement for sending according to the multicast group membership to interchanger Control information, indicate interchanger modification flow table；The interchanger, for modifying flow table according to the control information；Also For when receiving the CoMP data that the indoor base band device is sent, the destination address according to the CoMP data to be corresponding Multicast group is forwarded the CoMP data；The interior base band device, for according to the collaboration set and each multicast group It is corresponding, the COMP data are sent to the interchanger.
The beneficial effect of technical solution provided in an embodiment of the present invention is:
The multicast that will be determined according to each collaboration set in BH network with each multicast group corresponding relationship by multicast control device Group membership's relationship is sent to multicast relations processing unit, can BH network element configuration multicast packet related to each multicast group Transmission, is carried out data transmission using multicasting technology to realize in BH network, saves bandwidth, reduce C-RAN, CoMP Etc. advanced cooperation transmission technology to the bandwidth requirement of BH network, so that C-RAN is widely used in BH network bandwidth resources has In the actual deployment scene of limit.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing.
Fig. 1 is the apparatus structure schematic diagram for the Radio Access Network data transmission system that the embodiment of the present invention one provides；
Fig. 2 is the apparatus structure schematic diagram of Radio Access Network data transmission system provided by Embodiment 2 of the present invention；
Fig. 3 is the apparatus structure schematic diagram for the Radio Access Network data transmission system that the embodiment of the present invention three provides；
Fig. 4 is the Radio Access Network data transmission method flow chart that the embodiment of the present invention four provides；
Fig. 5 is the Radio Access Network data transmission method flow chart that the embodiment of the present invention five provides；
Fig. 6 is the Radio Access Network data transmission method flow chart that the embodiment of the present invention six provides；
Fig. 7 is the Radio Access Network data transmission method flow chart that the embodiment of the present invention seven provides；
Fig. 8 is the schematic diagram of the multicast group membership of the BH network of embodiment seven；
Fig. 9 is the schematic diagram that RRU sends IGMP report to multicast server in process shown in Fig. 7；
Figure 10 is the schematic diagram that BBU sends multicast packet in process shown in Fig. 7；
Figure 11 is the Radio Access Network data transmission method flow chart that the embodiment of the present invention eight provides；
Figure 12 is the schematic diagram that MCU sends multicast group configuration message to OFC in process shown in Figure 11；
Figure 13 is the schematic diagram that OFC sends control information to interchanger in process shown in Figure 11；
Figure 14 is the Radio Access Network data transmission method flow chart that the embodiment of the present invention nine provides.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention Formula is described in further detail.
Inventor has found that can be effectively reduced C-RAN and CoMP to the bandwidth of BH network using multicasting technology It is required that but the multicasting technology of the prior art or related protocol are not suitable for mobile radio communication mostly both for internet Network, the main reason is that its multicast member of the multicast group of existing multicasting technology is that each subscriber's main station is determined according to user interest, And variation is very slow, so each host can send report multicast group is added；But in the mobile communication network, to a use The RRU variation of data is transmitted quickly in family, directly cannot send report by each RRU multicast group is added, realize multicast packet Transmission.Multicasting technology is successfully applied to mobile communications network by the research to BH network by the present inventor thus, C-RAN and CoMP are reduced to the bandwidth requirement of BH.
It in order to facilitate understanding and describes, before introducing specific method, first in conjunction with attached drawing to Radio Access Network data The structure of transmission is simply introduced.
Embodiment one
Referring to Fig. 1, a kind of Radio Access Network data transmission system is present embodiments provided, which includes:
MCU (Multicast Control Unit, multicast control unit) 11, multicast relations processing unit 12 and correlation BH network element 13.
MCU11, for sending multicast group configuration message, the multicast group configuration message instruction to multicast relations processing unit The multicast group membership determined by the corresponding relationship of each collaboration set and each multicast group；Multicast relations processing unit 12, is used for The multicast group configuration message that the MCU11 is sent is received, it is related to each multicast group according to the multicast group membership BH network element 13 configures muticast data transmission；Related BH network element 13, for configuring multicast number with the multicast relations processing unit 12 According to transmission.
The present embodiment Radio Access Network data are transmitted through MCU will be true by the corresponding relationship of each collaboration set and each multicast group Fixed multicast group membership informs multicast relations processing unit, to realize that data in the multicast transmission of BH network, reduce C-RAN and CoMP enables C-RAN to be widely used in BH network bandwidth resources limited reality the bandwidth requirement of BH network In deployment scenario.
Embodiment two
Referring to fig. 2, another Radio Access Network data transmission system is present embodiments provided, which includes:
MCU21, multicast relations processing unit 22 and correlation BH network element.
Specifically, multicast relations processing unit 22 is the equipment containing RRU function, such as RRU, mobile communication base station BS or Equipment of the RRU in conjunction with the BBU function of part.The multicast relations processing unit 22 includes receiving module 221 and data processing module 222。
Receiving module 221, for receiving the multicast group configuration message of MCU21 transmission, which is indicated The multicast group membership determined by the corresponding relationship of each collaboration set and each multicast group；It is also used to receive BBU231 according to described each The CoMP data that the corresponding relationship of collaboration set and each multicast group is sent to the multicast group belonging to it.
Data processing module 222, for according to multicast group membership BH network element related to each multicast group Carry out data transmission.The data module further include: multicast group determining module 2221, for being determined according to the multicast group membership Multicast group belonging to multicast relations processing unit 22；Sending module 2222, for sending IGMP to multicast server 233 (Internet Group Management Protocol, Internet Group Management Protocol) message, request update its multicast group and are subordinate to Category relationship.
MCU21 includes that member relation obtains module 211 and sending module 212.
Member relation obtains module 211, for obtaining the multicast determined by the corresponding relationship of each collaboration set and each multicast group Group membership's relationship, including receiving module 2111 and multicast group relationship determination module 2112.Receiving module 2111, for receiving The collaboration set relationship message that BBU231 is sent；Multicast group relationship determination module 2112, for true according to the collaboration set relationship message Determine the corresponding relationship of each collaboration set and each multicast group and multicast group membership is determined according to the corresponding relationship.
Sending module 212 is informed that each collaboration set of BBU231 is corresponding with each multicast group and is closed for sending message to BBU231 System；It is also used to send multicast group configuration message to multicast relations processing unit 22, the multicast group configuration message is indicated by each The multicast group membership that the corresponding relationship of collaboration set and each multicast group determines.
Specifically, MCU can be the independent network equipment, can also be set on BBU or server.
BH network element includes BBU231, interchanger 232 and multicast server 233.
BBU231, including corresponding relationship obtain module 2311 and message processing module 2312.
Corresponding relationship obtains module 2311, for obtaining the corresponding relationship of each collaboration set Yu each multicast group, including collaboration set Relationship sending module 2313 and receiving module 2314.Collaboration set relationship sending module 2313 disappears for sending collaboration set to MCU21 Breath, the collaboration set relationship message indicate remote radio unit (RRU) corresponding to each collaboration set；Receiving module 2314, for receiving The message that MCU21 is sent, the message include the corresponding relationship of each collaboration set and each multicast group；
Message processing module 2312, for the corresponding relationship according to each collaboration set and each multicast group, by interchanger 232 to Each multicast group sends CoMP data.
Interchanger 232, for listening to IGMP (the Internet Group of the transmission of multicast relations processing unit 22 Management Protocol, Internet Group Management Protocol) message, update its multicast address；It is also used to receive BBU231 hair The CoMP data sent, and the COMP data are forwarded according to multicast address.
In the present embodiment, multicast relations processing unit is the RRU member of each multicast group.MCU determines each collaboration set and each The corresponding relationship of multicast group, and multicast group membership is determined according to the corresponding relationship, message then is sent to BBU, is informed The corresponding relationship of each collaboration set and each multicast group；And multicast group configuration message is sent to multicast relations processing unit, inform the group Multicast group belonging to Automated generalization device unit is broadcast, by the multicast relations processing unit according to the instruction of the message, determines oneself Which multicast group belonged to, IGMP report is then sent accordingly, is added or exits corresponding multicast group, and is received belonging to it The CoMP data of multicast group.After interchanger listens to corresponding IGMP message, its multicast address is updated, respective sets will be come from The data for broadcasting group, are forwarded to corresponding RRU member, i.e. multicast relations processing unit.To realize in BH network support from BBU reduces the advanced cooperation transmission technology such as C-RAN, CoMP and wants to the bandwidth of BH network to the multicast transmission of each collaboration set It asks.
Embodiment three
Referring to Fig. 3, a kind of Radio Access Network data transmission system is present embodiments provided, which includes:
MCU31, multicast relations processing unit 32 and correlation BH network element.
Multicast relations processing unit 32 is with OFC (OpenFlow Controller, open flow controller) function Server or the independent network equipment, including receiving module 321 and data processing module 322.
Receiving module 321, for receiving the multicast group configuration message of the transmission of multicast control device 31, multicast group configuration disappears Breath indicates the multicast group membership determined by the corresponding relationship of each collaboration set and each multicast group；
Data processing module 322, for carrying out data biography according to the BH network element of the multicast group membership and each multicast group It is defeated.Data processing module 322 includes message processing module 3221 and information sending module 3222.
Message processing module 3221, for being generated according to the multicast group membership, based on OF, (OpenFlow is opened Stream) agreement control information, the control information be used to indicate interchanger modification flow table, specifically: indicating the interchanger, it connects When receiving multicast packet, according to the corresponding multicast group of the destination address of the multicast packet, which is forwarded and/or The address that the RRU member that the destination address is multicast group corresponding with the destination address is modified after multicast packet duplication is concurrent Give the RRU member.
Sending module 3222, for sending the control information to interchanger.
MCU31 includes that member relation obtains module 311 and sending module 312.Member relation obtains module 311, is used for Obtain the multicast group membership determined by the corresponding relationship of each collaboration set and each multicast group, including receiving module (not shown). Receiving module, for receiving the message of BBU331 transmission, which indicates multicast group membership.Sending module 312, is used for Multicast group configuration message is sent to multicast relations processing unit 32, and the multicast group configuration message is indicated by each collaboration set and each The multicast group membership that the corresponding relationship of multicast group determines.It should be noted that MCU can be the independent network equipment, It can be set on BBU or server.
Related BH network element includes BBU331, interchanger 332 and RRU member 333.
BBU331 includes that corresponding relationship obtains module 3311 and message processing module 3312.
It includes multicast relations determining module 3313, multicast member relationship sending module that corresponding relationship, which obtains module 3311, 3314.Multicast group relationship determination module 3313, for determining that each collaboration set is corresponding with the corresponding relationship of each multicast group and according to this Relationship determines multicast group membership；Multicast group membership's sending module 3314, for sending message, the message to MCU31 Include multicast group membership.
Message processing module 3312, for the corresponding relationship according to each collaboration set and each multicast group, by interchanger 332 to Each multicast group sends CoMP data.
Interchanger 332, the control information for being sent according to multicast relations processing unit 32 modify flow table；It is also used to connecing When receiving the CoMP data of BBU331 transmission, according to the corresponding multicast group of the destination address of the CoMP data, to the CoMP data It is forwarded and/or the RRU that the destination address is multicast group corresponding with the destination address will be modified after CoMP data duplication The address of member is simultaneously sent to the RRU member.
Specifically, the sending module of MCU, which can also send multicast member to RRU member simultaneously, configures message.Group at this time The control information that the information sending module of information process unit is sent to interchanger is broadcast, instruction interchanger is receiving the BBU It is not necessary to modify the destination addresses of the CoMP data when CoMP data of transmission, but according to the destination address pair of the CoMP data The multicast group answered is forwarded the CoMP data.Interchanger is used in the CoMP data for receiving the BBU transmission at this time When, according to the corresponding multicast group of destination address of the CoMP data, the CoMP data are forwarded.
In the present embodiment, it is directed to each collaboration set by BBU, each multicast group is set, then send message to MCU, accuse Know its multicast member relationship, and send main broadcaster's group configuration message from MCU to OFC, informs OFC multicast group membership.OFC according to The member relation of multicast group determines multicast path, and sends the control message based on OF agreement to each interchanger, configures each exchange The flow table of machine.It supports to reduce C-RAN, CoMP from BBU to the multicast transmission of each collaboration set in BH network to realize Etc. advanced cooperation transmission technology to the bandwidth requirement of BH network.
Below based on the framework of above-mentioned group system, Radio Access Network data transmission method provided by the invention is carried out Detailed description.
Example IV
The present embodiment is provided a kind of wireless for realizing muticast data transmission from the angle of multicast relations processing unit Network data transmission method is accessed, referring to fig. 4, this method process includes:
401, multicast relations processing unit receives the multicast group configuration message that MCU is sent, and the multicast group configuration message refers to The multicast group membership determined by the corresponding relationship of each collaboration set and each multicast group, the corresponding relationship and multicast composition are shown Member's relationship is determined by the multicast control device or indoor base band device；
Specifically, multicast group membership can determine by the following method: BBU determines each collaboration set and each multicast group Then corresponding relationship determines multicast group membership according to the corresponding relationship, then sends message from BBU to MCU, indicate each group Broadcast the RRU member of group；Or MCU receives the collaboration set relationship message that BBU is sent, and is determined according to the collaboration set relationship message Then the corresponding relationship of each collaboration set and each multicast group determines multicast group membership according to the corresponding relationship.
Specifically, the collaboration set is directed to the set that a user carries out multiple RRU of CoMP cooperation transmission；Association Make the relationship that collection relationship refers to each collaboration set Yu RRU member.
402, the multicast relations processing unit is according to the related BH of the multicast group membership and each multicast group Network element configuration muticast data transmission.
Specifically, multicast relations processing unit may is that RRU or the equipment comprising RRU function, it is also possible to open flow control Device OFC processed or the equipment comprising OFC function.The related BH network element of each multicast group includes at least one in following network element device: BBU, RRU or equipment comprising RRU function, OFC or equipment comprising OFC function and interchanger etc..
Specifically, if the multicast relations processing unit is RRU or the equipment comprising RRU function, at the multicast relations Device is managed according to multicast group configuration message BH network element configuration muticast data transmission related to each multicast group, comprising:
Multicast relations processing unit determines its multicast group subjected according to the multicast group membership；
Multicast relations processing unit sends Internet Group Management Protocol IGMP message to multicast server, and request updates its group Group dependencies are broadcast, so that interchanger updates its multicast address by monitoring the IGMP message；
Multicast relations processing unit, which is received, is closed by indoor base band device according to each collaboration set is corresponding with each multicast group It is the CoMP data sent to multicast group belonging to the multicast relations processing unit, the CoMP data are by interchanger according to update Multicast address afterwards is forwarded.
If the multicast relations processing unit is open flow controller OFC or the equipment comprising OFC function, the multicast is closed It is processing unit according to multicast group configuration message BH network element configuration muticast data transmission related to each multicast group, packet Include: multicast relations processing unit sends the control based on open flows OF agreement to interchanger according to the multicast group membership and believes Breath, so that the interchanger forwards after received multicast packet is forwarded or is replicated according to modified flow table, directly The multicast group data is received to corresponding RRU member.
In the present embodiment, the corresponding relationship that each collaboration set determines collaboration set Yu each multicast group is directed to by MCU or BBU And the RRU member of each multicast group, then corresponding multicast group membership is informed into multicast relations processing unit by MCU, thus Realize that data in the multicast transmission of BH network, save the bandwidth of BH network, reduce C-RAN and CoMP to the bandwidth of BH network It is required that C-RAN is enable to be widely used in the limited actual deployment scene of BH network bandwidth resources.
It should be noted that in the embodiment of the present invention: RRU is remote radio unit (RRU)；RRU member is with RRU function Equipment, such as RRU, BS (Base Station, mobile communication base station), equipment of the RRU in conjunction with the BBU function of part etc.； Collaboration set is that the set of multiple RRU members of cooperation transmission is carried out to a user；Collaboration set relationship refers to each collaboration set and each The relationship of RRU member.
Embodiment five
The present embodiment is provided a kind of wireless for realizing muticast data transmission from the angle of multicast control device MCU Network data transmission method is accessed, referring to Fig. 5, this method process includes:
501, MCU obtain multicast group membership.
Specifically, MCU obtains multicast group membership can be realized by following method:
The collaboration set relationship message that base band device is sent in one: MCU receiving chamber of method；According to the collaboration set relationship message Determine the corresponding relationship of each collaboration set and each multicast group；It is determined according to the corresponding relationship of each collaboration set and each multicast group The multicast group membership.Further, MCU also sends message to indoor base band device, informs the indoor base band device The corresponding relationship of each collaboration set and each multicast group, so that the interior base band device is according to each collaboration set and each multicast group Corresponding relationship, by interchanger to each multicast group send CoMP data.
The message that base band device is sent in two: MCU receiving chamber of method, the message indicate the multicast member and close System.
502, MCU send multicast group configuration message to multicast relations processing unit, so that the multicast relations processing unit According to multicast group membership BH network element configuration muticast data transmission related to each multicast group, the multicast group is matched It sets message and indicates the multicast group membership determined by the corresponding relationship of each collaboration set and each multicast group.
In the present embodiment, multicast relations processing unit is informed by the multicast group membership that MCU will acquire, to realize Data save the bandwidth of BH network in the multicast transmission of BH network, reduce C-RAN and CoMP and want to the bandwidth of BH network It asks, C-RAN is enable to be widely used in the limited actual deployment scene of BH network bandwidth resources.
Embodiment six
The present embodiment is provided a kind of wireless for realizing muticast data transmission from the angle of indoor Base Band Unit BBU Network data transmission method is accessed, referring to Fig. 6, this method process includes:
601, BBU obtain the corresponding relationship of each collaboration set Yu each multicast group.
Specifically, the corresponding relationship that BBU obtains each collaboration set and each multicast group can be realized by the following method:
Method one: the corresponding relationship of each collaboration set Yu each multicast group is determined by BBU.At this point, BBU is according to each collaboration set The multicast group membership is determined with the corresponding relationship of each multicast group, and sends message to MCU, indicates the multicast member Relationship, so that the MCU sends multicast group configuration message, the multicast group configuration message instruction to multicast relations processing unit The multicast group membership.
Method two: BBU sends collaboration set message to MCU, so that the MCU is determined according to the collaboration set relationship message The corresponding relationship of each collaboration set and each multicast group, and the multicast group membership is determined according to the corresponding relationship, to Multicast relations processing unit and/or RRU member send multicast group configuration message, and the multicast group configuration message indicates described group Broadcast group membership's relationship；BBU receives the message that MCU is sent, and it is corresponding with each multicast group that the message indicates each collaboration set Relationship.
602, BBU, according to the corresponding relationship of each collaboration set and each multicast group, are sent by interchanger to each multicast group CoMP data.
In the present embodiment, BBU and MCU carry out information exchange, obtain the corresponding relationship of each collaboration set Yu each multicast group, and by Multicast group membership that MCU will acquire informs multicast relations processing unit, therefore BBU can be according to each collaboration set and each The corresponding relationship of multicast group sends CoMP data to each multicast group by interchanger, to realize data in BH network Multicast transmission saves the bandwidth of BH network, reduces C-RAN and CoMP to the bandwidth requirement of BH network, keeps C-RAN wide It is applied in the limited actual deployment scene of BH network bandwidth resources generally.
Embodiment seven
In the present embodiment, for realizing muticast data transmission from the angle of Radio Access Network data transmission system, A kind of Radio Access Network data transmission method is provided, in the present embodiment, related BH network can support the Internet group pipe Manage agreement IGMP.
Please referring collectively to Fig. 8, the present embodiment is to be equipped with 4 RRU, and the mobile network for being able to carry out CoMP transmission is Example, is described in detail Radio Access Network data transmission method.For different users, BBU (is located at baseband pool in figure It is interior) (the more of cooperation transmission can be carried out to a user using different collaboration sets according to wireless channel conditions at that time The set of a RRU) it is transmitted.Assuming that being needed in the mobile network using 4 different collaboration sets, wherein collaboration set A includes RRU1, RRU2, collaboration set B include RRU2, RRU3, and collaboration set C includes RRU1, RRU2, RRU3, collaboration set D include RRU3, RRU4。
Using RRU as multicast relations processing unit, a kind of Radio Access Network number provided in this embodiment in the present embodiment According to transmission method, referring to Fig. 7, method flow includes:
701, BBU send collaboration set relationship message to MCU, indicate RRU corresponding to each collaboration set to MCU.
702, MCU determine the corresponding relationship of each collaboration set and each multicast group, root according to the collaboration set relationship message Multicast group membership is determined according to the corresponding relationship.
This step specifically: MCU is that each collaboration set distributes a multicast group, i.e., by collaboration set A, B, C, D and multicast group A, B, C, D are mapped, wherein each multicast group has a determining multicast address.Then according to each collaboration set with The corresponding relationship of each multicast group determines the RRU in each multicast group.
703, MCU send message to BBU, and the corresponding relationship of each collaboration set and each multicast group is informed BBU.
704, MCU send multicast group configuration message to each RRU relevant to multicast, inform its multicast group membership, RRU corresponding to i.e. each multicast group.
As shown in figure 3, this step specifically includes: MCU indicates what RRU1 was subordinate to RRU1 transmission multicast group configuration message Multicast group A, multicast group C；MCU sends multicast group configuration message to RRU2, indicate the multicast group A that RRU2 is subordinate to, multicast group B, Multicast group C；MCU sends multicast group configuration message to RRU3, indicates multicast group B, multicast group C, multicast group D that RRU3 is subordinate to； MCU sends multicast group configuration message to RRU4, indicates the multicast group D that RRU4 is subordinate to.
MCU informs multicast group belonging to each RRU, can be by way of carrying following information in multicast group configuration message It realizes: carrying address information (address, IP MAC (Media Access Control, such as multicast medium access control) of multicast group (Internet Protocol, multicast IP) address etc.)；Or carry the name information of multicast group；Or carry multicast Serial number information (i.e. basis first passes through the serial number of agreement or signaling conventions and the mapping relations of multicast group in advance) of group, etc..
After 705, RRU receive the multicast group configuration message of MCU transmission, formed according to the multicast in the multicast group configuration message Member's relationship, determines the multicast group belonging to oneself.
706, RRU send IGMP report to multicast server, and request updates its multicast group dependencies, as shown in Figure 9.
Specifically, RRU can be reported by IGMP is added certain multicast groups, it can also be reported by IGMP and exit certain groups Group is broadcast, to update its multicast group dependencies.
707, interchanger listens to the IGMP message of RRU transmission, updates its multicast address.
708, BBU send CoMP to each multicast group according to the corresponding relationship of each collaboration set and each multicast group, by interchanger Data specifically include as shown in Figure 10:
BBU is corresponding with each multicast group according to the collaboration set, and the COMP data are sent to interchanger；
Interchanger is forwarded COMP data according to its multicast address；
It is its MAC Address or the data of its affiliated multicast group address that the RRU of the COMP data, which receives destination address,.
In the present embodiment, the corresponding relationship of each collaboration set Yu each multicast group is determined by MCU, is then disappeared to BBU transmission Breath, informs the corresponding relationship of each collaboration set Yu each multicast group；And multicast group configuration message is sent to RRU, it informs belonging to the RRU Multicast group.RRU determines which multicast group oneself belonged to according to the instruction of the message, then accordingly send IGMP report, be added or Corresponding multicast group is exited, and receives the data from affiliated multicast group.After interchanger listens to corresponding IGMP message, more Its new multicast address, future BBU data, be forwarded to corresponding RRU.To realize in BH network support from BBU to The multicast transmission of each collaboration set reduces the advanced cooperation transmission technology such as C-RAN, CoMP to the bandwidth requirement of BH network.
Embodiment eight
In the present embodiment, for realizing muticast data transmission from the angle of Radio Access Network data transmission system, Another Radio Access Network data transmission method is provided, in the present embodiment, related BH network support open flows OF exchange.
Firstly, referring to Fig. 8, the present embodiment still to be equipped with for 4 RRU can carry out the mobile network of CoMP transmission, Radio Access Network data transmission method is described in detail.For different users, BBU (is located in baseband pool) in figure (the more of cooperation transmission can be carried out to a user using different CoMP collaboration sets according to wireless channel conditions at that time The set of a RRU) it is transmitted.Assuming that being needed in the mobile network using 4 different collaboration sets, wherein collaboration set A includes RRU1, RRU2, collaboration set B include RRU2, RRU3, and collaboration set C includes RRU1, RRU2, RRU3, collaboration set D include RRU3, RRU4。
Using open flow controller OFC as multicast relations processing unit in the present embodiment, provided in an embodiment of the present invention one Kind Radio Access Network data transmission method, referring to Figure 11, this method process includes:
801, BBU send collaboration set relationship message to MCU, indicate RRU corresponding to each collaboration set to MCU.
802, MCU determine the corresponding relationship of each collaboration set and each multicast group, root according to the collaboration set relationship message Multicast group membership is determined according to the corresponding relationship.
Specifically, MCU is that each CoMP collaboration set distributes a multicast group respectively, i.e., by collaboration set A, B, C, D and multicast Group A, B, C, D are mapped, wherein each multicast group has a determining multicast address.Then according to each collaboration set The RRU in each multicast group is determined with the corresponding relationship of each multicast group.
803, MCU send message to BBU, and the corresponding relationship of each collaboration set and each multicast group is informed BBU.
804, MCU send multicast group configuration message to OFC, inform its multicast group membership, i.e., corresponding to each multicast group RRU.
Specifically, MCU sends multicast group configuration message to OFC, as shown in Figure 7:
The content of the multicast group membership includes: that multicast group A corresponds to RRU1, RRU2；Multicast group B corresponds to RRU2, RRU3； Multicast group C corresponds to RRU1, RRU2, RRU3；Multicast group D corresponds to RRU3, RRU4.
The multicast group configuration message can also be sent by way of increment, i.e., by increasing or deleting certain multicast compositions Member, to update existing multicast group membership.
In the multicast group configuration message, the multicast group membership can be indicated in the following way:
By carrying multicast group address information, multicast group name information or multicast group serial number information, to indicate multicast group；
By carrying RRU address information, ID (Identity, the Identity Code) information of RRU or RRU serial number information, come Indicate the corresponding RRU member of multicast group.
805, OFC send the control information based on OF agreement to interchanger, indicate each interchanger modification flow table, specifically:
OFC sends control information to each interchanger, each interchanger is indicated when receiving multicast packet, according to the multicast number According to the corresponding multicast group of destination address, to the multicast packet be forwarded and/or will the multicast packet duplication after modify the mesh Address be multicast group corresponding with the destination address RRU address and be sent to the RRU.
Specifically, OFC sends control information to interchanger, as shown in figure 13:
OFC to interchanger 2 send control information, indicate interchanger 2: when receive destination address be multicast group A data When, it is transmitted to interchanger 1；When receiving the data that destination address is multicast group B or multicast group C, it is transmitted to interchanger 1 and exchange Machine 3；When receiving the data that destination address is multicast group D, it is transmitted to interchanger 3；
OFC sends control information to interchanger 1, indicates interchanger 1；When receive destination address be multicast group B data When, it modifies the MAC Address that its destination address is RRU2 and is transmitted to RRU2；It is multicast group A or multicast group C when receiving destination address Data when, copy as 2 parts of data, modification destination address is the MAC Address of RRU1 and is transmitted to RRU1 portion, another is repaired Change the MAC Address that destination address is RRU2 and is transmitted to RRU2；
OFC sends control information to interchanger 3, indicates interchanger 3: being multicast group B or multicast group when receiving destination address When the data of C, modifies the MAC Address that its destination address is RRU3 and be transmitted to RRU3；It is multicast group D's when receiving destination address When data, 2 parts of data are copied as, portion modification destination address is the MAC Address of RRU3 and is transmitted to RRU3, another modification Destination address is the MAC Address of RRU4 and is transmitted to RRU4.
806, BBU, according to the corresponding relationship of each collaboration set and each multicast group, are sent by each interchanger to each multicast group CoMP data.
Specifically, corresponding relationship of the BBU according to the collaboration set and each multicast group, the COMP data are sent to accordingly Interchanger；
Interchanger is according to its flow table, according to the corresponding multicast group of destination address of the CoMP data by the COMP number According to be forwarded and/or will the CoMP data duplication after modify its destination address be multicast group corresponding with the destination address RRU member MAC Address and be sent to the RRU member.Wherein, RRU receives the data that destination address is its MAC Address.
In the present embodiment, it is directed to each collaboration set by MCU, each multicast group is set, then send message to BBU, accuse Know the corresponding relationship of each collaboration set Yu each multicast group, and send main broadcaster's group configuration message to OFC, inform each multicast group of OFC at Member.OFC determines multicast path, and send the control message based on OF agreement to a interchanger according to the member relation of multicast group, The flow table of each interchanger is configured, each interchanger is indicated when receiving multicast packet, according to the destination address of the data Corresponding multicast group is forwarded the multicast packet and/or will modify the destination address after multicast packet duplication For the RRU of multicast group corresponding with the destination address address and be sent to the RRU, enable multicast packet by correctly It is forwarded to each RRU.Support in BH network to realize from BBU to the multicast transmission of each collaboration set, reduce C-RAN, Bandwidth requirement of the advanced cooperation transmission technology such as CoMP to BH network.
Embodiment nine
In the present embodiment, for realizing muticast data transmission from the angle of Radio Access Network data transmission system, Provide another Radio Access Network data transmission method.
In the present embodiment, related BH network support OF exchange.
Firstly, referring to Fig. 8, the present embodiment still to be equipped with for 4 RRU can carry out the mobile network of CoMP transmission, Radio Access Network data transmission method is described in detail.For different users, BBU (is located in baseband pool) in figure (the more of cooperation transmission can be carried out to a user using different CoMP collaboration sets according to wireless channel conditions at that time The set of a RRU) it is transmitted.Assuming that being needed in the mobile network using 4 different collaboration sets, wherein collaboration set A includes RRU1, RRU2, collaboration set B include RRU2, RRU3, and collaboration set C includes RRU1, RRU2, RRU3, collaboration set D include RRU3, RRU4。
Using open flow controller OFC as multicast relations processing unit in the present embodiment, provided in an embodiment of the present invention one Kind Radio Access Network data transmission method, referring to Figure 14, method flow includes:
901, BBU send collaboration set relationship message to MCU, indicate RRU member corresponding to each collaboration set to MCU.
902, MCU determine the corresponding relationship of each collaboration set and each multicast group, root according to the collaboration set relationship message Multicast group membership is determined according to the corresponding relationship.
903, MCU send message to BBU, and the corresponding relationship of each collaboration set and each multicast group is informed BBU.
904, MCU send multicast group configuration message to the relevant RRU of each multicast, inform its multicast group membership, i.e., Multicast group belonging to the RRU.
Specifically, MCU informs multicast group belonging to each RRU, it can be by carrying following letter in multicast group configuration message The mode of breath is realized: carrying the address information (such as MAC Address, IP address) of multicast group；Or carry the title letter of multicast group Breath；Or the serial number information of multicast group is carried (i.e. according to the mapping for the serial number and multicast group for first passing through agreement or signaling conventions in advance Relationship), etc..
905, MCU send multicast group configuration message to OFC, inform its multicast group membership, i.e., corresponding to each multicast group RRU.
Specifically, the multicast group configuration message can also be sent by way of increment, i.e., by increasing or deleting certain Multicast member, to update existing multicast group membership.
In the multicast group configuration message, multicast group membership can be indicated in the following way:
By carrying multicast group address information, multicast group name information or multicast group serial number information, to indicate multicast group；
By carrying the id information or RRU serial number information of RRU address information, RRU, to indicate the corresponding RRU of multicast group.
906, OFC send the control information based on OF agreement to interchanger, indicate each interchanger modification flow table, but do not modify The destination address of multicast packet, i.e. OFC send control information to each interchanger, when indicating that each interchanger receives multicast packet, According to the corresponding multicast group of the destination address of the multicast packet, which is forwarded.
Specifically, OFC sends the schematic diagram of control information to interchanger, as shown in figure 13: OFC sends to interchanger 2 and controls Information processed indicates interchanger 2: when receiving the data that destination address is multicast group A, being transmitted to interchanger 1；When receiving destination When location is the data of multicast group B or multicast group C, it is transmitted to interchanger 1 and interchanger 3；It is multicast group D's when receiving destination address When data, it is transmitted to interchanger 3；
OFC to interchanger 1 send control information, indicate interchanger 1: when receive destination address be multicast group B data When, it is transmitted to RRU2；When receiving the data that destination address is multicast group A or multicast group C, it is transmitted to RRU1 and RRU2；
OFC sends control information to interchanger 3, indicates interchanger 3: being multicast group B or multicast group when receiving destination address When the data of C, it is transmitted to RRU3, when receiving the data that destination address is multicast group D, is transmitted to RRU3 and RRU4.
407, BBU, according to the corresponding relationship of each collaboration set and each multicast group, are sent by each interchanger to each multicast group CoMP data, specifically include:
The COMP data are sent to each interchanger according to the corresponding relationship of the collaboration set and each multicast group by BBU；
Each interchanger is forwarded the CoMP data received according to its flow table.
It is its MAC Address or the data of its affiliated multicast group address that the RRU of the CoMP data, which receives destination address,.
In the present embodiment, it is directed to each collaboration set by MCU, each multicast group is set, then send message to BBU, accuse Know the corresponding relationship of BBU each collaboration set and each multicast group, and send main broadcaster's group configuration message to RRU and OFC, informs RRU and OFC Multicast group membership.OFC determines multicast path, and send to each interchanger and assist based on OF according to the member relation of multicast group The control message of view configures the flow table of each interchanger, and it is not necessary to modify the destination addresses of multicast packet for interchanger, can also make multicast number According to being correctly forwarded to each RRU.It supports to reduce from BBU to the multicast transmission of each collaboration set in BH network to realize Bandwidth requirement of the advanced cooperation transmission technologies such as C-RAN, CoMP to BH network.
In conclusion Radio Access Network of embodiment of the present invention data transmission method, apparatus and system, by MCU by root Multicast relations processing is sent to according to the multicast group membership that each collaboration set in BH network is determined with each multicast group corresponding relationship Device, can BH network element configuration muticast data transmission related to each multicast group, to realize use in BH network Multicasting technology carries out data transmission, and reduces the advanced cooperation transmission technology such as C-RAN, CoMP to the bandwidth requirement of BH network, makes C-RAN can be widely used in the limited actual deployment scene of BH network bandwidth resources.
It should be understood that Radio Access Network data transmission device provided by the above embodiment and system are carrying out wirelessly It, only the example of the division of the above functional modules, can be according to need in practical application when accessing network data transmission It wants and is completed by different functional modules above-mentioned function distribution, i.e., the internal structure of equipment is divided into different function moulds Block, to complete all or part of the functions described above.In addition, Radio Access Network data transmission provided by the above embodiment The embodiment of method, apparatus and system belongs to same design, and specific implementation process is detailed in embodiment of the method, no longer superfluous here It states.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (27)

1. a kind of Radio Access Network data transmission method, which is characterized in that the method is applied to multicast relations processing unit, The described method includes:
Receive multicast control device send multicast group configuration message, the multicast group configuration message indicate by each collaboration set with The multicast group membership that the corresponding relationship of each multicast group determines, the corresponding relationship and multicast group membership are by the multicast Control device or indoor base band device determine；
According to multicast group membership backhaul network BH network element configuration muticast data transmission related to each multicast group；
Wherein, the multicast group membership includes the multicast group dependencies of remote radio unit (RRU) RRU member, the multicast group Message is configured by carrying the address information of multicast group, the serial number information instruction institute of the name information of multicast group or multicast group State multicast group dependencies；
Wherein, a collaboration set is directed to the set that a user carries out multiple RRU members of cooperative multipoint transmission CoMP.
2. the method as described in claim 1, which is characterized in that the correlation BH network element includes interchanger, the indoor base band Device and multicast server, the multicast relations processing unit are the equipment containing RRU function, the setting containing RRU function Standby includes RRU, described to be passed according to multicast group membership BH network element configuration multicast packet related to each multicast group It is defeated, comprising:
Its multicast group being subordinate to is determined according to the multicast group membership；
Internet Group Management Protocol is sent to the multicast server by corresponding interchanger according to the multicast group of the determination IGMP message, request update its multicast group dependencies, so that corresponding interchanger monitors the IGMP message, and according to described IGMP message updates multicast address；
Reception is sent to the cooperative multipoint transmission CoMP data of the multicast group belonging to it, and the CoMP data are by indoor base band device root It is sent to the interchanger according to the corresponding relationship of each collaboration set and each multicast group, and by the interchanger according to updated Multicast address is forwarded.
3. the method as described in claim 1, which is characterized in that the multicast group membership includes that each multicast group is corresponding RRU member, the multicast group configuration message indicate the corresponding RRU member of each multicast group in the following way:
By carrying multicast group address information, multicast group name information or multicast group serial number information, multicast group is indicated；
By carrying the Identity Code id information or RRU serial number information of RRU address information, RRU, instruction multicast group is corresponding RRU member.
4. method as claimed in claim 3, which is characterized in that described according to the multicast group membership and each multicast The related BH network element configuration muticast data transmission of group, comprising:
The control information based on open flows OF agreement is sent to interchanger according to the multicast group membership, indicates the exchange Machine maintenance changes flow table, so that after the interchanger is forwarded or replicates to received multicast packet according to modified flow table Forwarding, until corresponding RRU member receives the multicast group data.
5. method as claimed in claim 4, which is characterized in that described to be sent according to the multicast group membership to interchanger Control information based on OF agreement indicates the interchanger modification flow table, comprising:
Control information is sent to the interchanger, when indicating that the interchanger receives CoMP data, according to the CoMP data The corresponding multicast group of destination address, to the CoMP data be forwarded and/or will the CoMP data duplication after modify institute It states the medium access control MAC Address for the RRU member that destination address is multicast group corresponding with the destination address and is sent to The RRU member；Or
After the multicast control device sends multicast group configuration message to RRU member, Xiang Suoshu interchanger sends control information, When indicating that the interchanger receives CoMP data, according to the corresponding multicast group of destination address of the CoMP data, to described CoMP data are forwarded.
6. a kind of Radio Access Network data transmission method, which is characterized in that the described method includes:
Obtain multicast group membership；
Multicast group configuration message is sent to multicast relations processing unit, so that the multicast relations processing unit is according to described group Broadcast group membership's relationship backhaul network BH network element configuration muticast data transmission related to each multicast group, the multicast group configuration Message indicates the multicast group membership determined by the corresponding relationship of each collaboration set and each multicast group；
Wherein, the multicast group membership includes the multicast group dependencies of remote radio unit (RRU) RRU member, the multicast group Message is configured by carrying the address information of multicast group, the serial number information instruction institute of the name information of multicast group or multicast group State multicast group dependencies；
Wherein, a collaboration set is directed to the set that a user carries out multiple RRU members of cooperative multipoint transmission CoMP.
7. method as claimed in claim 6, which is characterized in that when the multicast group Automated generalization device is open flow controller When OFC, the BH network element includes remote radio unit (RRU) RRU member, interchanger and indoor base band device, the method also includes:
The multicast group configuration message is sent to RRU member, so that by described between the RRU and the indoor base band device Interchanger realizes the muticast data transmission.
8. method according to claim 6 or 7, which is characterized in that the acquisition multicast group membership, comprising:
The collaboration set relationship message that base band device is sent in receiving chamber；
The corresponding relationship of each collaboration set and each multicast group is determined according to the collaboration set relationship message；
The multicast group membership is determined according to the corresponding relationship of each collaboration set and each multicast group.
9. method according to claim 8, which is characterized in that the method also includes:
Message is sent to indoor base band device, informs the corresponding relationship of indoor base band device each collaboration set and each multicast group, So that the interior base band device is according to the corresponding relationship of each collaboration set and each multicast group, by interchanger to each multicast Group sends cooperative multipoint transmission CoMP data.
10. method according to claim 6 or 7, which is characterized in that the acquisition multicast group membership, comprising:
The message that base band device is sent in receiving chamber, the message indicate the multicast group membership.
11. a kind of Radio Access Network data transmission method, which is characterized in that the described method includes:
Obtain the corresponding relationship of each collaboration set Yu each multicast group；
According to the corresponding relationship of each collaboration set and each multicast group, cooperative multipoint transmission is sent to each multicast group by interchanger CoMP data；
The method, further includes:
The multicast group membership is determined according to the corresponding relationship of each collaboration set and each multicast group；
To multicast control device send message, indicate the multicast group membership so that the multicast group control device to Multicast relations processing unit sends multicast group configuration message, and the multicast group configuration message indicates the multicast member and closes System；
Wherein, the multicast group membership includes the multicast group dependencies of remote radio unit (RRU) RRU member, the multicast group Message is configured by carrying the address information of multicast group, the serial number information instruction institute of the name information of multicast group or multicast group State multicast group dependencies；
Wherein, a collaboration set is directed to the set that a user carries out multiple RRU members of cooperative multipoint transmission CoMP.
12. method as claimed in claim 11, which is characterized in that described to obtain each collaboration set pass corresponding with each multicast group System, comprising:
Determine the corresponding relationship of each collaboration set and each multicast group.
13. method as claimed in claim 11, which is characterized in that described to obtain each collaboration set pass corresponding with each multicast group System, comprising:
Collaboration set message is sent to multicast control device, so that the multicast control device is according to the collaboration set relationship message The corresponding relationship for determining each collaboration set and each multicast group determines the multicast group membership according to the corresponding relationship, Multicast group configuration message is sent to multicast relations processing unit, the multicast group configuration message indicates the multicast member and closes System；
The message that the multicast control device is sent is received, pair of each collaboration set and each multicast group is determined according to the message It should be related to.
14. a kind of multicast relations processing unit characterized by comprising
Receiving module, for receiving the multicast group configuration message of multicast control device transmission, the multicast group configuration message instruction The multicast group membership determined by the corresponding relationship of each collaboration set and each multicast group；
Data processing module, for according to multicast group membership backhaul network BH network element related to each multicast group Configuration data transmission；
Wherein, the multicast group membership includes the multicast group dependencies of remote radio unit (RRU) RRU member, the multicast group Message is configured by carrying the address information of multicast group, the serial number information instruction institute of the name information of multicast group or multicast group State multicast group dependencies；
Wherein, a collaboration set is directed to the set that a user carries out multiple RRU members of cooperative multipoint transmission CoMP.
15. multicast relations processing unit as claimed in claim 14, which is characterized in that the correlation BH network element includes exchange Machine, the indoor base band device and multicast server；The multicast relations processing unit is to have the function of remote radio unit (RRU) RRU Equipment, the equipment containing RRU function includes RRU, the data processing module further include:
Multicast group determining module, for according to the multicast group membership determine the multicast relations processing unit belonging to group Broadcast group；
Sending module, for sending Internet Group Management Protocol IGMP report to the multicast server by corresponding interchanger Text, request update its multicast group dependencies；
The receiving module, be also used to base band device in receiving chamber according to the corresponding relationship of each collaboration set and each multicast group to The cooperative multipoint transmission CoMP data that multicast group belonging to it is sent.
16. multicast relations processing unit as claimed in claim 14, which is characterized in that the multicast relations processing unit is tool There are the server or the independent network equipment of open flow controller OFC function；The data processing module further include:
Message processing module, for generating the control information based on open flows OF agreement, institute according to the multicast group membership It states control information and is used to indicate interchanger modification flow table, specifically: when indicating that the interchanger receives multicast packet, according to institute The corresponding multicast group of destination address for stating multicast packet, is forwarded the multicast packet and/or answers the multicast packet The medium access control MAC for the RRU member that the destination address is multicast group corresponding with the destination address is modified after system Location is simultaneously sent to the RRU member；Or after the multicast control device sends multicast group configuration message to RRU member, refer to When showing that the interchanger receives multicast packet, according to the corresponding multicast group of the destination address of the data, to the multicast number According to being forwarded；
Information sending module, for sending the control information to interchanger.
17. a kind of multicast control device characterized by comprising
Member relation obtains module, is closed for obtaining by the multicast member that the corresponding relationship of each collaboration set and each multicast group determines System；
Sending module, for sending multicast group configuration message, the multicast group configuration message instruction to multicast relations processing unit The multicast group membership；
Wherein, the multicast group membership includes the multicast group dependencies of remote radio unit (RRU) RRU member, the multicast group Message is configured by carrying the address information of multicast group, the serial number information instruction institute of the name information of multicast group or multicast group State multicast group dependencies；
Wherein, a collaboration set is directed to the set that a user carries out multiple RRU members of cooperative multipoint transmission CoMP.
18. multicast control device as claimed in claim 17, which is characterized in that
The sending module is also used to when multicast relations processing unit is open flow controller OFC to remote radio unit (RRU) RRU Member sends the multicast group configuration message.
19. multicast control device as claimed in claim 17, which is characterized in that the member relation obtains module and includes:
Receiving module, the collaboration set relationship message sent for base band device in receiving chamber；
Multicast group membership's determining module, for determining each collaboration set and each multicast according to the collaboration set relationship message The corresponding relationship of group, and the multicast group membership is determined according to the corresponding relationship；
The sending module is also used to send message to the indoor base band device, informs that the indoor base band device respectively cooperates The corresponding relationship of collection and each multicast group.
20. multicast control device as claimed in claim 17, which is characterized in that the member relation obtains module and includes:
Receiving module, for the message that base band device in receiving chamber is sent, the message indicates the multicast group membership.
21. such as the described in any item multicast control devices of claim 17 to 20, which is characterized in that the multicast control device is The independent network equipment is set on indoor base band device or server.
22. a kind of interior base band device characterized by comprising
Corresponding relationship obtains module, for obtaining the corresponding relationship of each collaboration set Yu each multicast group；
Message processing module, for the corresponding relationship according to each collaboration set and each multicast group, by interchanger to each multicast Group sends cooperative multipoint transmission CoMP data；
Wherein, the corresponding relationship obtains module further include:
Multicast group relationship determination module, for determining the corresponding relationship of each collaboration set and each multicast group, according to the correspondence Relationship determines multicast group membership；Wherein, the multicast group membership includes the multicast group of remote radio unit (RRU) RRU member Membership, address information, the name information of multicast group or the multicast that the multicast group configuration message passes through carrying multicast group The serial number information of group indicates the multicast group dependencies；
Multicast group membership's sending module, for sending message to multicast control device, the message indicates the multicast Group membership's relationship；
Wherein, a collaboration set is directed to the set that a user carries out multiple RRU members of cooperative multipoint transmission CoMP.
23. interior base band device as claimed in claim 22, which is characterized in that the corresponding relationship obtains module and includes:
Collaboration set relationship sending module, for sending collaboration set message to multicast control device, the collaboration set relationship message refers to Remote radio unit (RRU) RRU member corresponding to each collaboration set is shown；
Receiving module, the message sent for receiving the multicast control device, the message indicate each collaboration set with The corresponding relationship of each multicast group.
24. a kind of Radio Access Network data transmission system characterized by comprising multicast control device, multicast relations processing Device and related backhaul network BH network element；
The multicast control device, for sending multicast group configuration message, the multicast group to the multicast relations processing unit Configuration message indicates the multicast group membership determined by the corresponding relationship of each collaboration set and each multicast group；Wherein, described group The multicast group dependencies that group membership's relationship includes remote radio unit (RRU) RRU member are broadcast, the multicast group configuration message is by taking The name information of address information, multicast group with multicast group or the serial number information of multicast group indicate that the multicast group is subordinate to pass System；；
Wherein, a collaboration set is directed to the set that a user carries out multiple RRU members of cooperative multipoint transmission CoMP；
The multicast relations processing unit, the message sent for receiving the multicast control device, according to the message and institute State the related BH network element configuration muticast data transmission of each multicast group；
The correlation BH network element, for configuring muticast data transmission with the multicast relations processing unit.
25. system as claimed in claim 24, which is characterized in that the multicast relations processing unit is with far end radio frequency list The equipment of first RRU function, the equipment containing RRU function includes RRU, and the correlation BH network element includes interchanger, indoor base Band device and multicast server,
The multicast relations processing unit, be also used to according to the multicast group membership determine it belonging to multicast group, and lead to It crosses corresponding interchanger and sends special net igmpinternet IGMP message to the multicast server, request updates its multicast group and is subordinate to Relationship；And the cooperative multipoint transmission CoMP data for receiving the interchanger forwarding；
The interchanger, the IGMP message sent for listening to the multicast relations processing unit, updates its multicast address；Also The CoMP data sent for receiving the indoor base band device, and the COMP is forwarded according to the multicast address Data；
The interior base band device sends out the COMP data for the corresponding relationship according to the collaboration set and each multicast group Give the interchanger.
26. system as claimed in claim 24, which is characterized in that the multicast relations processing unit is to assist with open flows OF Discuss defined open flow controller OFC function equipment, the correlation BH network element include interchanger, interior base band device and RRU member；
The multicast relations processing unit, for sending the control based on OF agreement to interchanger according to the multicast group membership Information processed indicates the interchanger modification flow table；
The interchanger, for modifying flow table according to the control information；It is also used to receiving the indoor base band device hair When the CoMP data sent, according to the corresponding multicast group of destination address of the CoMP data, the CoMP data are forwarded And/or by the CoMP data duplication after modify the destination address be multicast group corresponding with the destination address RRU at The address of member is simultaneously sent to the RRU member；
The interior base band device sends out the COMP data for the corresponding relationship according to the collaboration set and each multicast group Give the interchanger.
27. system as claimed in claim 24, which is characterized in that the multicast relations processing unit is is advised containing OF agreement The equipment of fixed OFC function, the correlation BH network element include interchanger, indoor base band device and RRU member；
The multicast control device is also used to send multicast group configuration message to RRU member, informs group belonging to the RRU member Broadcast group；
The multicast relations processing unit, for sending the control based on OF agreement to interchanger according to the multicast group membership Information processed indicates the interchanger modification flow table；
The interchanger, for modifying flow table according to the control information；It is also used to receiving the indoor base band device hair When the CoMP data sent, according to the corresponding multicast group of destination address of the CoMP data, the CoMP data are forwarded；
The interior base band device sends out the COMP data for the corresponding relationship according to the collaboration set and each multicast group Give the interchanger.
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