WO2015070421A1 - 无线接入网络的数据传输方法、设备及系统 - Google Patents

无线接入网络的数据传输方法、设备及系统 Download PDF

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Publication number
WO2015070421A1
WO2015070421A1 PCT/CN2013/087141 CN2013087141W WO2015070421A1 WO 2015070421 A1 WO2015070421 A1 WO 2015070421A1 CN 2013087141 W CN2013087141 W CN 2013087141W WO 2015070421 A1 WO2015070421 A1 WO 2015070421A1
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Prior art keywords
multicast group
multicast
relationship
data
switch
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PCT/CN2013/087141
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English (en)
French (fr)
Inventor
戎璐
李波杰
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华为技术有限公司
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Priority to CN201380078002.6A priority Critical patent/CN105359423B/zh
Priority to PCT/CN2013/087141 priority patent/WO2015070421A1/zh
Publication of WO2015070421A1 publication Critical patent/WO2015070421A1/zh

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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

Definitions

  • the present invention relates to the field of mobile communication networks, and in particular, to a data transmission method, device and system for a wireless access network. Background technique
  • C-RAN Cloud-Radio Access Network
  • the C-RAN adopts a cloud-based baseband pool to control distributed RRUs (Remote Radio Units), which makes the collaboration between cells more convenient. It can pass a large range of CoMP (Coordinated Multi-point). Point transmission), therefore, the data transmission of the wireless access network can effectively reduce inter-cell interference, improve wireless network capacity, improve edge user performance, save energy, reduce cost, etc., but at the same time, C-RAN pair
  • the bandwidth of the BH (Backhaul, backhaul) network also raises higher requirements.
  • the topology of the BH network is relatively complex, and can be composed of multiple layers of chains, stars, rings, and the like, and can pass through the BBU pool to the RRU. A dozen hops of transmission.
  • the data needs to be copied from the BBU (Building Baseband Unit) pool at the same time and transmitted to the multiple RRUs. Therefore, BH is transmitted. The amount of data that needs to be transferred in the network will increase exponentially.
  • the inventors have found that the prior art has at least the following problems:
  • a BH network the larger the number of CoMP cooperation points, the larger the amount of data that needs to be transmitted, and the higher the bandwidth requirement for BH.
  • RRU data it is necessary to replace the laid cables on a large scale, which is very difficult to implement. Therefore, with the data transmission method of the prior art wireless network, the C-RAN cannot be widely applied to the actual deployment scenario where the bandwidth resource of the BH network is limited. Summary of the invention
  • the embodiment of the present invention provides data of a wireless access network. Transmission methods, systems and equipment.
  • the technical solution is as follows:
  • the first aspect provides a data transmission method of a radio access network, where the method includes: receiving a multicast group configuration message sent by a multicast control apparatus, where the multicast group configuration message indicates that each collaboration set and each a multicast group membership determined by the correspondence between the multicast groups, the correspondence relationship and the multicast group membership being determined by the multicast control apparatus or the indoor baseband apparatus; according to the multicast group membership and the groups
  • the relevant backhaul network BH network element of the broadcast group configures multicast data transmission.
  • the multicast group membership includes a multicast group membership of the remote radio unit RRU member, and the multicast group configuration message is passed.
  • the address information of the multicast group, the name information of the multicast group, or the sequence number information of the multicast group indicates the membership of the multicast group.
  • the multicast data transmission includes: determining, according to the multicast group membership, the multicast group to which the multicast group belongs; sending the Internet Group Management Protocol (IGMP) packet to the multicast server according to the determined multicast group, requesting to update the multicast group.
  • IGMP Internet Group Management Protocol
  • the group membership relationship so that the corresponding switch listens to the IGMP message, and updates the multicast address table according to the IGMP message; receives coordinated multi-point transmission CoMP data sent to the multicast group to which it belongs, the CoMP data And transmitting, by the indoor baseband device, the switch to the switch according to the correspondence between each collaboration set and each multicast group, and forwarding by the switch according to the updated multicast address table.
  • the multicast group membership includes an RRU member corresponding to each multicast group, and the multicast group configuration message indicates the The RRU member corresponding to the multicast group: indicates the multicast group by carrying the multicast group address information, the multicast group name information, or the multicast group number information; and carries the RRU address information, the RRU identity code ID information, or the RRU sequence number. Information to indicate the RRU member corresponding to the multicast group.
  • the multicast data transmission includes: sending, according to the multicast group membership, control information based on the OpenFlow OF protocol to the switch, instructing the switch to modify the flow table, so that the switch performs the received group according to the modified flow table.
  • the broadcast data is forwarded or copied and then forwarded until the corresponding RRU member receives the multicast group data.
  • the control information based on the OF protocol is sent to the switch according to the multicast group membership,
  • the switch modifying the flow table, including: sending control information to the switch, instructing the switch to forward the CoMP data according to the multicast group corresponding to the destination address of the CoMP data when the switch receives the CoMP data.
  • the media access control MAC address of the RRU member of the multicast group corresponding to the destination address is modified and sent to the RRU member; or in the multicast control device
  • the control information is sent to the switch, and the switch is instructed to forward the CoMP data according to the multicast group corresponding to the destination address of the CoMP data when the switch receives the CoMP data.
  • a second aspect provides a radio access network data transmission method, where the method includes: acquiring a multicast group membership relationship; and sending a multicast group configuration message to the multicast relationship processing apparatus, so that the multicast relationship processing apparatus is configured according to
  • the multicast group membership is associated with the associated BH network element of each multicast group to configure multicast data transmission, and the multicast group configuration message indicates the multicast determined by the correspondence between each collaboration set and each multicast group. Group membership.
  • the BH network element includes a remote radio unit RRU member, where The method further includes: sending the multicast group configuration message to an RRU member.
  • the acquiring the multicast group membership includes: receiving the collaboration set sent by the indoor baseband device a relationship message; determining, according to the collaboration set relationship message, a correspondence between each collaboration set and each multicast group; determining the multicast group membership according to the correspondence between each collaboration set and each multicast group.
  • the method further includes: sending a message to the indoor baseband device, and informing the indoor baseband device of each collaboration set
  • the correspondence between the multicast groups is such that the indoor baseband device transmits CoMP data to each multicast group through the switch according to the correspondence between the cooperation sets and the multicast groups.
  • the obtaining the multicast group membership includes: receiving a message sent by the indoor baseband device, The message indicates the multicast group membership.
  • a third aspect provides a radio access network data transmission method, where the method includes: acquiring a correspondence between each collaboration set and each multicast group; and according to the correspondence between each collaboration set and each multicast group, The switch sends coordinated multi-point transmission CoMP data to each multicast group.
  • the obtaining the correspondence between each collaboration set and each multicast group includes: determining a correspondence between each collaboration set and each multicast group .
  • the method further includes: determining, according to the correspondence between each collaboration set and each multicast group, a multicast group membership relationship; sending a message to the multicast control device, indicating the multicast group membership, so that the multicast group control device sends a multicast group configuration message to the multicast relationship processing device, where the multicast group The configuration message indicates the multicast group membership.
  • the obtaining the correspondence between each collaboration set and each multicast group includes: sending a collaboration set message to the multicast control apparatus, so that the The multicast control device determines, according to the collaboration set relationship message, a correspondence between the collaboration sets and each multicast group, and determines the multicast group membership relationship according to the correspondence relationship to the multicast relationship processing device and/or the RRU.
  • the member sends a multicast group configuration message, where the multicast group configuration message indicates the multicast group membership; receives the message sent by the multicast control device, and determines the collaboration set and each multicast according to the message.
  • the correspondence of the groups includes: sending a collaboration set message to the multicast control apparatus, so that the The multicast control device determines, according to the collaboration set relationship message, a correspondence between the collaboration sets and each multicast group, and determines the multicast group membership relationship according to the correspondence relationship to the multicast relationship processing device and/or the RRU.
  • the fourth aspect provides a multicast relationship processing apparatus, including: a receiving module, configured to receive a multicast group configuration message sent by a multicast control apparatus, where the multicast group configuration message indicates each collaboration set and each multicast The multicast group membership determined by the correspondence of the group; the data processing module is configured to perform data transmission according to the multicast group membership relationship with the related backhaul network BH network element of each multicast group.
  • the multicast relationship processing device is a device that has a remote radio unit RRU function
  • the data processing module further includes: a multicast group determining module And determining, by the multicast group membership, the multicast group to which the multicast relationship processing device belongs; and sending, by the sending module, the Internet Group Management Protocol (IGMP) message to the multicast server, requesting to update the multicast group membership
  • the receiving module is further configured to receive, by the indoor baseband device, the coordinated multi-point transmission CoMP data that is sent to the multicast group to which the base station device transmits according to the correspondence between the cooperation groups and the multicast groups.
  • the multicast relationship processing device is a server with an OpenFlow controller OFC function or an independent network device.
  • the data processing module further includes: an information processing module, configured to generate, according to the multicast group membership, control information based on an OpenFlow OF protocol, where the control information is used to indicate an exchange
  • the device modifies the flow table, specifically: when the switch receives the multicast data, forwards the multicast data according to the multicast group corresponding to the destination address of the multicast data, and/or the multicast After the data is copied, the media access control MAC address of the RRU member of the multicast group corresponding to the destination address is modified and sent to the RRU member; or the multicast control device sends a multicast to the RRU member.
  • the switch After the group configuration message, the switch is instructed to forward the multicast data according to the multicast group corresponding to the destination address of the data, and the information sending module is configured to send the control to the switch. information.
  • the fifth aspect provides a multicast control apparatus, including: a membership acquiring module, configured to acquire a multicast group membership determined by a correspondence between each collaboration set and each multicast group; and a sending module, configured to multicast The relationship processing device, the multicast group configuration message indicating the multicast group membership.
  • the sending module is further configured to send, when the multicast relationship processing device is an OpenFlow controller OFC, to the remote radio unit RRU member Multicast group configuration message.
  • the membership acquiring module includes: a receiving module, configured to receive a collaboration set relationship message sent by the indoor baseband device; and a multicast group membership determining module And determining, according to the collaboration set relationship message, a correspondence between each collaboration set and each multicast group, and determining the multicast group membership relationship according to the corresponding relationship; the sending module is further configured to The indoor baseband device sends a message to inform the indoor baseband device of the cooperative set and the correspondence relationship between the multicast groups.
  • the membership acquiring module includes: a receiving module, configured to receive a message sent by the indoor baseband device, where the message indicates the multicast group Membership.
  • the multicast control device is an independent network device Or located in the indoor baseband device or server.
  • the sixth aspect provides an indoor baseband device, including: a correspondence acquiring module, configured to acquire a correspondence between each collaboration set and each multicast group; and an information processing module, configured to use, according to the collaboration set and each multicast group Corresponding relationship, the cooperative multi-point transmission CoMP data is sent to each multicast group through the switch.
  • the corresponding relationship obtaining module includes: a multicast group relationship determining module, configured to determine a correspondence between each collaboration set and each multicast group The relationship between the multicast group memberships is determined according to the corresponding relationship, and the multicast group membership sending module is configured to send a message to the multicast control device, where the message indicates the multicast group membership.
  • the corresponding relationship obtaining module further includes: a collaboration set relationship sending module, configured to send a collaboration set message to the multicast control apparatus, where the collaboration set The relationship message indicates the remote radio unit RRU member corresponding to each collaboration set; the receiving module is configured to receive the message sent by the multicast control device, where the message indicates the correspondence between each collaboration set and each multicast group relationship.
  • the seventh aspect provides a radio access network data transmission system, including: a multicast control device, a multicast relationship processing device, and a related backhaul network BH network element; the multicast control device, configured to send to the multicast relationship
  • the processing device sends a multicast group configuration message, where the multicast group configuration message indicates a multicast group membership determined by the correspondence between each collaboration set and each multicast group; the multicast relationship processing device is configured to receive the The multicast message is configured by the multicast control device, and the multicast data transmission is configured according to the message and the related BH network element of each multicast group; the related BH network element is configured to be configured with the multicast relationship processing device. Broadcast data transmission.
  • the multicast relationship processing device is a device that has a remote radio unit RRU function, where the related BH network element includes a switch, an indoor baseband device, and The multicast server, the multicast relationship processing device is further configured to determine, according to the multicast group membership, the multicast group to which the multicast group belongs, and send the special group management protocol IGMP message to the multicast server, requesting to update a multicast group affiliation; and a cooperative multipoint transmission CoMP data for receiving the switch; the switch, configured to listen to the IGMP message sent by the multicast relationship processing device, and update the multicast address table thereof And receiving the CoMP data sent by the indoor baseband device, and forwarding the COMP data according to the multicast address table; and the indoor baseband device is configured to use, according to the collaboration set, each multicast group Correspondingly, the COMP data is sent to the switch.
  • the related BH network element includes a switch, an indoor baseband device, and The multicast server
  • the multicast relationship processing device is further configured to determine, according to the multi
  • the multicast relationship processing device is a device that has an OpenFlow controller OFC function specified by an OpenFlow OF protocol, and the related BH network element
  • the switch includes: a switch, an indoor baseband device, and an RRU member; the multicast relationship processing device is configured to send, according to the multicast group membership, control information based on the OF protocol to the switch, to instruct the switch to modify the flow table; And a method for modifying a flow table according to the control information; and further, when receiving the CoMP data sent by the indoor baseband device, according to a destination of the CoMP data
  • the multicast group corresponding to the address, the CoMP data is forwarded, and/or the CoMP data is copied, and the address of the RRU member whose destination address is the multicast group corresponding to the destination address is modified and sent to the multicast group.
  • the RRU member; the indoor baseband device configured to send the COMP data to the switch according to the correspondence between the collaboration set and each multicast group.
  • the multicast relationship processing device is a device that includes an OFC function specified by an OF protocol, where the related BH network element includes a switch and an indoor baseband device.
  • the RRU member; the multicast control device is further configured to send a multicast group configuration message to the RRU member to notify the multicast group to which the RRU member belongs; and the multicast relationship processing device is configured to use, according to the multicast group
  • the member relationship sends the control information based on the OF protocol to the switch, and the switch is instructed to modify the flow table.
  • the switch is configured to modify the flow table according to the control information, and is further configured to receive the CoMP data sent by the indoor baseband device. Transmitting, according to the multicast group corresponding to the destination address of the CoMP data, the CoMP data; the indoor baseband device, configured to: according to the collaboration group and the correspondence of each multicast group, the COMP data Sent to the switch.
  • the multicast group device sends the multicast group membership determined by the association between each collaboration set and each multicast group in the BH network to the multicast relationship processing device, so that it can be configured with the relevant BH network element of each multicast group.
  • Multicast data transmission which realizes data transmission using multicast technology in the BH network, saves bandwidth, reduces bandwidth requirements of BH network by advanced cooperative transmission technologies such as C-RAN and CoMP, and enables C-RAN to be widely used. Applicable to the actual deployment scenario where the bandwidth of the BH network is limited.
  • FIG. 1 is a schematic structural diagram of an apparatus for a wireless access network data transmission system according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic structural diagram of an apparatus for a wireless access network data transmission system according to Embodiment 2 of the present invention
  • FIG. 3 is a schematic structural diagram of an apparatus for a wireless access network data transmission system according to Embodiment 3 of the present invention
  • 4 is a flowchart of a data transmission method for a radio access network according to Embodiment 4 of the present invention
  • FIG. 5 is a flowchart of a data transmission method for a radio access network according to Embodiment 5 of the present invention
  • FIG. 7 is a flowchart of a method for transmitting data of a radio access network according to Embodiment 7 of the present invention
  • FIG. 8 is a schematic diagram of a membership of a multicast group of a BH network according to Embodiment 7;
  • FIG. 9 is a schematic diagram of an RRU sending an IGMP report to a multicast server in the process shown in FIG. 7;
  • FIG. 10 is a schematic diagram of a BBU sending multicast data in the process shown in FIG.
  • FIG. 11 is a flowchart of a data transmission method for a wireless access network according to Embodiment 8 of the present invention
  • FIG. 12 is a schematic diagram of a MCU sending a multicast group configuration message to an OFC in the process shown in FIG. 11
  • FIG. 14 is a flowchart of a method for transmitting data of a radio access network according to Embodiment 9 of the present invention.
  • the inventors have found through research that the use of multicast technology can effectively reduce the bandwidth requirements of C-RAN and CoMP for BH networks.
  • most of the prior art multicast technologies or related protocols are for the Internet, and are not suitable for mobile communication networks.
  • the main reason is that the multicast group of the existing multicast technology has multicast members determined by user hosts according to user interests, and the change is very slow, so each host can send a report to join the multicast group; but in the mobile communication network
  • the RRU that transmits data to a user changes rapidly. It cannot directly send reports through each RRU to join the multicast group to implement multicast data transmission.
  • the research on the BH network successfully applied the multicast technology to the mobile communication network, thereby reducing the bandwidth requirements of the C-RAN and the CoMP to the BH.
  • the embodiment provides a wireless access network data transmission system, which includes: an MCU (Multicast Control Unit) 11, a multicast relationship processing device 12, and an associated BH network element 13.
  • MCU Multicast Control Unit
  • the MCU 11 is configured to send a multicast group configuration message to the multicast relationship processing device, where the multicast group configuration message indicates a multicast group membership determined by the correspondence between each collaboration set and each multicast group;
  • the processing device 12 is configured to receive the multicast group configuration message sent by the MCU 11, and configure multicast data transmission according to the multicast group membership and the related BH network element 13 of each multicast group; the related BH network element 13. For configuring multicast data transmission with the multicast relationship processing device 12.
  • the data transmission of the radio access network is notified to the multicast relationship processing device by the MCU, and the multicast group membership determined by the correspondence between each collaboration set and each multicast group is implemented, thereby implementing multicast transmission of data in the BH network, thereby reducing the multicast transmission of the data in the BH network.
  • the bandwidth requirements of the C-RAN and the CoMP for the BH network enable the C-RAN to be widely applied to the actual deployment scenarios where the bandwidth of the BH network is limited.
  • this embodiment provides another wireless access network data transmission system, where the system includes:
  • MCU 21 multicast relationship processing device 22 and associated BH network elements.
  • the multicast relationship processing device 22 is a device that includes an RRU function, such as an RRU, a mobile communication base station BS, or a combination of RRU and partial BBU functions.
  • the multicast relationship processing device 22 includes a receiving module 221 and a data processing module 222.
  • the receiving module 221 is configured to receive a multicast group configuration message sent by the MCU 21, where the multicast group configuration message indicates a multicast group membership determined by a correspondence between each collaboration set and each multicast group, and is further configured to receive the BBU 231 according to the CoMP data sent by the correspondence between each collaboration set and each multicast group to the multicast group to which it belongs.
  • the data processing module 222 is configured to perform data transmission according to the multicast group membership relationship and the related BH network element of each multicast group.
  • the data module further includes: a multicast group determining module 2221, configured to determine, according to the multicast group membership, a multicast group to which the multicast relationship processing device 22 belongs; and a sending module 2222, configured to send the IGMP to the multicast server 233 (Internet) Group Management Protocol (IP), requesting to update its multicast group membership.
  • IP Internet Group Management Protocol
  • the MCU 21 includes a membership acquisition module 211 and a transmission module 212.
  • the membership obtaining module 211 is configured to obtain a multicast group membership determined by the correspondence between each collaboration set and each multicast group, and includes a receiving module 2111 and a multicast group relationship determining module 2112.
  • the receiving module 2111 is configured to receive a collaboration set relationship message sent by the BBU 231.
  • the multicast group relationship determining module 2112 is configured to determine, according to the collaboration set relationship message, a correspondence between each collaboration set and each multicast group, and determine a group according to the correspondence relationship. Broadcast group membership.
  • the sending module 212 is configured to send a message to the BBU 231, and notify the BBU 231 of each collaboration set and each group.
  • the multicast group configuration message is also sent to the multicast relationship processing device 22, where the multicast group configuration message indicates the multicast group member determined by the correspondence between each collaboration set and each multicast group. relationship.
  • the MUC may be an independent network device or may be located on a BBU or a server.
  • the BH network element includes a BBU 231, a switch 232, and a multicast server 233.
  • the BBU 231 includes a correspondence acquiring module 2311 and an information processing module 2312.
  • the correspondence obtaining module 2311 is configured to obtain a correspondence between each collaboration set and each multicast group, and includes a collaboration set relationship sending module 2313 and a receiving module 2314.
  • the collaboration set relationship sending module 2313 is configured to send, to the MCU 21, a collaboration set message, where the collaboration set relationship message indicates a remote radio unit corresponding to each collaboration set, and a receiving module 2314, configured to receive a message sent by the MCU 21, where the message is sent. Include a correspondence between each collaboration set and each multicast group;
  • the information processing module 2312 is configured to send CoMP data to each multicast group through the switch 232 according to the correspondence between each collaboration set and each multicast group.
  • the switch 232 is configured to listen to an IGMP (Internet Group Management Protocol) message sent by the multicast relationship processing device 22, and update the multicast address table thereof; and further, receive the CoMP data sent by the BBU 231, and according to the group The broadcast address table forwards the COMP data.
  • IGMP Internet Group Management Protocol
  • the multicast relationship processing device is an RRU member of each multicast group.
  • the MCU determines the correspondence between each collaboration set and each multicast group, and determines the multicast group membership according to the correspondence, and then sends a message to the BBU to notify the correspondence between each collaboration set and each multicast group;
  • the processing device sends a multicast group configuration message to notify the multicast group to which the multicast relationship processing device unit belongs, and the multicast relationship processing device determines, according to the indication of the message, which multicast group it belongs to, and then sends an IGMP report according to the multicast group processing device. , join or quit the corresponding multicast group, and receive CoMP data from the multicast group to which it belongs.
  • the switch After receiving the corresponding IGMP message, the switch updates its multicast address table and forwards the data from the corresponding multicast group to the corresponding RRU member, that is, the multicast relationship processing device. Therefore, the multicast transmission from the BBU to each collaboration set is supported in the BH network, and the bandwidth requirement of the BH network by the advanced cooperative transmission technologies such as C-RAN and CoMP is reduced.
  • Embodiment 3
  • the embodiment provides a wireless access network data transmission system, and the system includes: an MCU 31, a multicast relationship processing device 32, and an associated BH network element.
  • the multicast relationship processing device 32 has an OFC (OpenFlow Controller).
  • a functional server or a separate network device including a receiving module 321 and a data processing module 322.
  • the receiving module 321 is configured to receive the multicast group configuration message sent by the multicast control device 31, where the multicast group configuration message indicates the multicast group membership determined by the correspondence between each collaboration set and each multicast group;
  • the module 322 is configured to perform data transmission with the BH network element of each multicast group according to the multicast group membership.
  • the data processing module 322 includes an information processing module 3221 and an information transmitting module 3222.
  • the information processing module 3221 is configured to generate, according to the multicast group membership, control information based on OF (OpenFlow) protocol, where the control information is used to instruct the switch to modify the flow table, specifically: instructing the switch to receive the
  • the multicast data is forwarded according to the multicast group corresponding to the destination address of the multicast data, and the multicast data is copied and the destination address is a multicast group corresponding to the destination address.
  • the address of the RRU member is sent to the RRU member.
  • the sending module 3222 is configured to send the control information to the switch.
  • the MUC 31 includes a membership acquisition module 311 and a transmission module 312.
  • the membership obtaining module 311 is configured to obtain a multicast group membership determined by the correspondence between each collaboration set and each multicast group, and includes a receiving module (not shown).
  • the receiving module is configured to receive a message sent by the BBU 331, where the message indicates a multicast group membership.
  • the sending module 312 is configured to send a multicast group configuration message to the multicast relationship processing device 32, where the multicast group configuration message indicates the multicast group membership determined by the correspondence between each collaboration set and each multicast group.
  • the MUC can be a standalone network device or a BBU or a server.
  • the associated BH network element includes a BBU 331, a switch 332, and an RRU member 333.
  • the BBU 331 includes a correspondence acquiring module 3311 and an information processing module 3312.
  • the correspondence obtaining module 3311 includes a multicast relationship determining module 3313 and a multicast membership sending module 3314.
  • the multicast group relationship determining module 3313 is configured to determine a correspondence between each collaboration set and each multicast group, and determine a multicast group membership relationship according to the corresponding relationship.
  • the multicast group membership sending module 3314 is configured to send a message to the MCU 31. This message contains multicast group membership.
  • the information processing module 3312 is configured to send CoMP data to each multicast group by using the switch 332 according to the correspondence between each collaboration set and each multicast group.
  • the switch 332 is configured to modify the flow table according to the control information sent by the multicast relationship processing device 32.
  • the switch 332 is further configured to: when receiving the CoMP data sent by the BBU 331, the CoMP data according to the multicast group corresponding to the destination address of the CoMP data. After forwarding and/or copying the CoMP data, the address of the RRU member of the multicast group corresponding to the destination address is modified and sent to the RRU member.
  • the sending module of the MUC can also send the multicast group member configuration to the RRU member at the same time.
  • the control information sent by the information sending module of the multicast information processing unit to the switch indicates that the switch does not need to modify the destination address of the CoMP data when receiving the CoMP data sent by the BBU, but according to the destination address of the CoMP data.
  • Corresponding multicast groups forward the CoMP data. In this case, when the switch receives the CoMP data sent by the BBU, the switch forwards the CoMP data according to the multicast group corresponding to the destination address of the CoMP data.
  • the BBU sets each multicast group for each collaboration set, and then sends a message to the MCU to inform the multicast membership, and the MCU sends an anchor group configuration message to the OFC to notify the OFC multicast group membership.
  • the OFC determines the multicast path based on the membership of the multicast group, and sends control messages based on the OF protocol to each switch to configure the flow table of each switch. Therefore, the multicast transmission from the BBU to each collaboration set is supported in the BH network, and the bandwidth requirement of the BH network by the advanced cooperative transmission technologies such as C-RAN and CoMP is reduced.
  • the wireless access network data transmission method provided by the present invention will be described in detail below based on the architecture of the above cluster system.
  • a method for transmitting data of a wireless access network is provided by taking a multicast data transmission from the perspective of a multicast relationship processing device. Referring to FIG. 4, the method includes:
  • the multicast relationship processing device receives a multicast group configuration message sent by the MCU, where the multicast group configuration message indicates a multicast group membership determined by a correspondence between each collaboration set and each multicast group, where the correspondence relationship is And the multicast group membership is determined by the multicast control device or the indoor baseband device;
  • the multicast group membership relationship may be determined by the following method: The BBU determines the correspondence between each collaboration set and each multicast group, and then determines the multicast group membership relationship in the corresponding relationship, and then the BBU sends a message to the MCU, indicating each The RRU member of the multicast group; or the MCU receives the cooperation set relationship message sent by the BBU, and determines the correspondence between each collaboration set and each multicast group according to the cooperation set relationship message, and then determines the multicast group membership according to the corresponding relationship. .
  • the collaboration set is a set of multiple RRUs that are directed to a CoMP cooperative transmission by a user;
  • the collaboration set relationship refers to a relationship between each collaboration set and an RRU member.
  • the multicast relationship processing apparatus configures multicast data transmission according to the multicast group membership relationship and the related BH network element of each multicast group.
  • the multicast relationship processing device may be: an RRU or a device including an RRU function, or an OpenFlow controller OFC or a device including an OFC function.
  • Related BH network elements of each multicast group to It includes one of the following NE devices: BBU, RRU or RRU-capable device, OFC or OFC-capable device and switch.
  • the multicast relationship processing device configures multicast according to the multicast group configuration message and the related BH network element of each multicast group.
  • Data transfer including:
  • the multicast relationship processing device determines, according to the multicast group membership, the multicast group to which the multicast group belongs; the multicast relationship processing device sends an Internet Group Management Protocol (IGMP) message to the multicast server, requesting to update its multicast group membership relationship, to Enabling the switch to update its multicast address table by listening to the IGMP message;
  • IGMP Internet Group Management Protocol
  • the multicast relationship processing device receives the CoMP data sent by the indoor baseband device to the multicast group to which the multicast relationship processing device belongs according to the correspondence between the cooperation sets and the multicast groups, and the CoMP data is updated by the switch according to the switch.
  • the multicast address table is forwarded.
  • the multicast relationship processing device is an OpenFlow Controller (OFC) or an OFC-capable device
  • the multicast relationship processing device is configured according to the multicast group configuration message and the related BH network element configuration group of each multicast group.
  • the multicast data transmission device includes: the multicast relationship processing device sends the control information based on the OpenFlow OF protocol to the switch according to the multicast group membership, so that the switch forwards the received multicast data according to the modified flow table. Or forwarded after replication, until the corresponding RRU member receives the multicast group data.
  • the MCU or the BBU determines the correspondence between the collaboration set and each multicast group and the RRU member of each multicast group for each collaboration set, and then the MCU informs the multicast relationship of the corresponding multicast group membership.
  • the processing device realizes the multicast transmission of data in the BH network, saves the bandwidth of the BH network, reduces the bandwidth requirement of the C-RAN and the CoMP to the BH network, and enables the C-RAN to be widely applied to the bandwidth resource of the BH network. In the actual deployment scenario.
  • the RRU is a remote radio unit;
  • the RRU member is a device with an RRU function, such as an RRU, a BS (Base Station, a mobile communication base station), and a device combining a RRU and a partial BBU function.
  • the collaboration set is a collection of multiple RRU members that are cooperatively transmitted to one user; the collaboration set relationship refers to the relationship between each collaboration set and each RRU member.
  • a method for transmitting data of a wireless access network is provided by taking the multicast data transmission from the perspective of the MCU of the multicast control device as an example. Referring to FIG. 5, the method includes: 501. The MCU obtains a multicast group membership.
  • the MCU obtains the multicast group membership relationship by using the following methods: Method 1: The MCU receives the collaboration set relationship message sent by the indoor baseband device, and determines the collaboration set and each multicast group according to the collaboration set relationship message. Corresponding relationship; determining the multicast group membership according to the correspondence between each collaboration set and each multicast group. Further, the MCU sends a message to the indoor baseband device to inform the indoor baseband device of the cooperation set and the corresponding relationship between the multicast groups, so that the indoor baseband device according to the collaboration sets and the corresponding multicast groups Relationship: CoMP data is sent to each multicast group through the switch.
  • Method 2 The MCU receives a message sent by the indoor baseband device, where the message indicates the multicast group membership.
  • the MCU sends a multicast group configuration message to the multicast relationship processing device, so that the multicast relationship processing device configures multicast data transmission according to the multicast group membership relationship and the related BH network element of each multicast group.
  • the multicast group configuration message indicates a multicast group membership determined by the correspondence between each collaboration set and each multicast group.
  • the MCU informs the multicast relationship processing device of the obtained multicast group membership, thereby implementing multicast transmission of data in the BH network, saving bandwidth of the BH network, and reducing C-RAN and CoMP to BH.
  • the bandwidth requirements of the network enable the C-RAN to be widely applied to the actual deployment scenarios where the BH network bandwidth resources are limited.
  • a multicast data transmission method is provided by taking the multicast data transmission from the perspective of the indoor baseband unit BBU as an example. Referring to FIG. 6, the method process includes:
  • the BBU obtains a correspondence between each collaboration set and each multicast group.
  • the BBU obtains the correspondence between each collaboration set and each multicast group by using the following methods:
  • Method 1 The BBU determines the correspondence between each collaboration set and each multicast group. At this time, the BBU determines the membership of the multicast group according to the correspondence between each collaboration set and each multicast group, and sends a message to the MCU, indicating the membership of the multicast group, so that the MCU is multicast.
  • the relationship processing device sends a multicast group configuration message, where the multicast group configuration message indicates the multicast group membership.
  • Method 2 The BBU sends a collaboration set message to the MCU, so that the MCU determines, according to the collaboration set relationship message, a correspondence between each collaboration set and each multicast group, and according to the corresponding relationship, And the multicast group configuration message is sent to the multicast relationship processing device and/or the RRU member, where the multicast group configuration message indicates the multicast group membership; and the BBU receives the message sent by the MCU.
  • the message indicates a correspondence between each collaboration set and each multicast group.
  • the BBU sends CoMP data to each group by using a switch according to the correspondence between each collaboration set and each multicast group.
  • the BBU and the MCU exchange information, obtain the correspondence between each collaboration set and each multicast group, and the MCU informs the multicast relationship processing device of the obtained multicast group membership, so the BBU can cooperate according to each collaboration.
  • Collecting the corresponding relationship with each multicast group sending CoMP data to the multicast groups through the switch, thereby implementing multicast transmission of data in the BH network, saving bandwidth of the BH network, and reducing C-RAN and CoMP to BH
  • the bandwidth requirements of the network enable the C-RAN to be widely applied to the actual deployment scenarios where the BH network bandwidth resources are limited.
  • a multicast access data transmission method is provided by taking a multicast data transmission from the perspective of a wireless access network data transmission system.
  • the related BH network can support the Internet group. Management protocol IGMP.
  • a mobile network with four RRUs and capable of CoMP transmission is taken as an example to describe a wireless access network data transmission method in detail.
  • the BBU in the baseband pool
  • the BBU can be transmitted using different collaboration sets (ie, a collection of multiple RRUs that are cooperatively transmitted to one user) based on the current wireless channel conditions. It is assumed that four different collaboration sets are needed in the mobile network, where the collaboration set A includes RRU1 and RRU2, the cooperation set B includes RRU2 and RRU3, the cooperation set C includes RRU1, RRU2, and RRU3, and the cooperation set D includes RRU3 and RRU4.
  • the RRU is used as the multicast relationship processing device, and the wireless access network data transmission method provided in this embodiment is shown in FIG. 7.
  • the method flow includes:
  • the BBU sends a cooperation set relationship message to the MCU, and indicates, to the MCU, the collaboration set.
  • the MCU determines, according to the collaboration set relationship message, a correspondence between each collaboration set and each multicast group, and determines a multicast group membership according to the correspondence.
  • This step is specifically as follows:
  • the MCU allocates a multicast group to each collaboration set, that is, the collaboration set A, B, C, and D are mapped with the multicast group, B, C, and D, where each multicast group has a certain determination. Multicast address.
  • the RRUs in each multicast group are determined according to the correspondence between each collaboration set and each multicast group. 703.
  • the MCU sends a message to the BBU, and notifies the BBU of the correspondence between each collaboration set and each multicast group.
  • the MCU sends a multicast group configuration message to each multicast-related RRU, and informs the multicast group membership, that is, the RRU corresponding to each multicast group.
  • the step specifically includes: the MCU sends a multicast group configuration message to the RRU1, indicating the multicast group A and the multicast group C to which the RRU1 belongs; the MCU sends a multicast group configuration message to the RRU2, indicating that the RRU2 belongs to The multicast group A, the multicast group B, and the multicast group C; the MCU sends a multicast group configuration message to the RRU3, indicating the multicast group B, the multicast group C, and the multicast group D to which the RRU3 belongs; the MCU sends the message to the RRU4.
  • the multicast group configuration message indicates the multicast group D to which the RRU4 belongs.
  • the MCU informs the multicast group to which the RRU belongs, and can implement the following information in the multicast group configuration message: Carrying the address information of the multicast group (MAC (Media Access Control) address, IP address) (Internet Protocol, multicast Internet Protocol) address, etc.; or carry the name information of the multicast group; or carry the serial number information of the multicast group (that is, the mapping relationship between the serial number and the multicast group according to the protocol or signaling convention) , and many more.
  • MAC Media Access Control
  • IP address Internet Protocol, multicast Internet Protocol
  • serial number information of the multicast group that is, the mapping relationship between the serial number and the multicast group according to the protocol or signaling convention
  • the RRU determines the multicast group to which the multicast group belongs according to the multicast group membership in the multicast group configuration message.
  • the RRU sends an IGMP report to the multicast server, requesting to update its multicast group membership, as shown in FIG. 9.
  • the RRU can join certain multicast groups through IGMP reports, and can also quit certain multicast groups through IGMP reports to update its multicast group affiliation.
  • the switch detects the IGMP message sent by the RRU and updates its multicast address table.
  • the BBU sends CoMP data to each multicast group through the switch according to the correspondence between each collaboration set and each multicast group. As shown in FIG. 10, the BBU specifically includes:
  • the BBU sends the COMP data to the switch according to the correspondence between the collaboration set and each multicast group
  • the switch forwards the COMP data according to its multicast address table.
  • the RRU of the COMP data receives the destination address as its MAC address or the data of the multicast group address to which it belongs.
  • the MCU determines the correspondence between each collaboration set and each multicast group, and then sends a message to the BBU to notify the correspondence between each collaboration set and each multicast group; and sends a multicast group configuration message to the RRU to notify The multicast group to which the RRU belongs. Based on the indication of the message, the RRU determines which one it belongs to. These multicast groups then send IGMP reports based on this, join or quit the corresponding multicast group, and receive data from the owning multicast group. After the switch detects the corresponding IGMP message, it updates its multicast address table. The data of the BBU is forwarded to the corresponding RRU. Therefore, the multicast transmission from the BBU to each collaboration set is supported in the BH network, and the bandwidth requirement of the BH network by the advanced cooperative transmission technologies such as C-RAN and CoMP is reduced.
  • the method for transmitting multicast data from the perspective of the wireless access network data transmission system is provided as an example, and another method for data transmission of the wireless access network is provided.
  • the related BH network supports the open flow. OF exchange.
  • the BBU in the baseband pool
  • the BBU can be transmitted using different CoMP cooperating sets (that is, a set of multiple RRUs that are cooperatively transmitted to one user) according to the current radio channel conditions.
  • the collaboration set A includes RRU1 and RRU2
  • the cooperation set B includes RRU2 and RRU3
  • the cooperation set C includes RRU1, RRU2, and RRU3
  • the cooperation set D includes RRU3 and RRU4.
  • the open flow controller OFC is used as the multicast relationship processing device, and the data access method for the wireless access network provided by the embodiment of the present invention is shown in FIG. 11.
  • the method includes:
  • the BBU sends a collaboration set relationship message to the MCU, and indicates, to the MCU, the collaboration set.
  • the MCU determines, according to the collaboration set relationship message, a correspondence between each collaboration set and each multicast group, and determines a multicast group membership according to the correspondence.
  • the MCU allocates a multicast group for each CoMP collaboration set, that is, the collaboration set A, B, C, and D are mapped with the multicast group, B, C, and D, wherein each multicast group has a certain determination. Multicast address. And determining, according to the correspondence between each collaboration set and each multicast group, each multicast group
  • the MCU sends a message to the BBU, and the corresponding relationship between each collaboration set and each multicast group is notified to the BBUo.
  • the MCU sends a multicast group configuration message to the OFC to inform the multicast group membership, that is, the RRU corresponding to each multicast group. Specifically, the MCU sends a multicast group configuration message to the OFC, as shown in FIG. 7:
  • the content of the multicast group membership includes: multicast group A corresponds to RRU1 and RRU2; multicast group B corresponds to RRU2 and RRU3; multicast group C corresponds to RRU1, RRU2, and RRU3; multicast group D corresponds to RRU3,
  • the multicast group configuration message can also be sent in an incremental manner, that is, by adding or deleting certain multicast group members to update the existing multicast group membership.
  • the multicast group configuration message may indicate the multicast group membership by: carrying the multicast group address information, the multicast group name information, or the multicast group sequence number information to indicate the multicast group;
  • the OFC sends the control information based on the OF protocol to the switch, and instructs each switch to modify the flow table, specifically:
  • the OFC sends control information to each switch, and instructs each switch to forward the multicast data according to the multicast group corresponding to the destination address of the multicast data when the multicast data is received, and/or copy the multicast data.
  • the address of the RRU of the multicast group corresponding to the destination address is modified and sent to the RRU.
  • the OFC sends control information to the switch, as shown in Figure 13.
  • the OFC sends control information to the switch 2, indicating that the switch 2: when receiving the data whose destination address is the multicast group A, forwards it to the switch 1; when receiving the data whose destination address is the multicast group B or the multicast group C, Forwarded to switch 1 and switch 3; when receiving the data whose destination address is multicast group D, forward it to switch 3;
  • the OFC sends control information to the switch 1 to indicate that the switch 1: when receiving the data whose destination address is the multicast group B, modifies the MAC address whose destination address is RRU2 and forwards it to the RRU 2; Or the data of the multicast group C is copied to 2 pieces of data, one modified destination address is the MAC address of the RRU1 and forwarded to the RRU1, and the other modified destination address is the MAC address of the RRU2 and forwarded to the RRU2;
  • the OFC sends control information to the switch 3, instructing the switch 3 to: when receiving the data whose destination address is the multicast group B or the multicast group C, modify the MAC address whose destination address is RRU3 and forward it to the RRU3; When the data of multicast group D is duplicated, it is copied into 2 pieces of data, and the modified destination address is the MAC address of RRU3 and forwarded to RRU3. The other modification destination address is the MAC address of RRU4 and forwarded. Give RRU4.
  • the BBU sends CoMP data to each multicast group through each switch according to the correspondence between each collaboration set and each multicast group.
  • the BBU sends the COMP data to the corresponding switch according to the correspondence between the collaboration set and each multicast group;
  • the switch forwards the COMP data according to the multicast table corresponding to the destination address of the CoMP data according to the flow table, and/or copies the CoMP data and modifies the destination address to the destination address of the RRU.
  • the data for its MAC address.
  • the MCU sets each multicast group for each collaboration set, and then sends a message to the BBU to inform the correspondence between each collaboration set and each multicast group, and sends an anchor group configuration message to the OFC to inform the OFC groups.
  • the OFC determines the multicast path according to the membership of the multicast group, and sends a control message based on the OF protocol to the switch, and configures a flow table of each switch, and instructs the switches to receive the multicast data according to the data.
  • the multicast data can be forwarded correctly to each RRU. Therefore, the multicast transmission from the BBU to each collaboration set is supported in the BH network, and the bandwidth requirement of the BH network by the advanced cooperative transmission technologies such as C-RAN and CoMP is reduced.
  • the associated BH network supports OF switching.
  • this embodiment still uses a mobile network with four RRUs for CoMP transmission as an example, and details a wireless access network data transmission method.
  • the BBU in the baseband pool
  • the BBU can be transmitted using different CoMP cooperating sets (ie, a set of multiple RRUs that are cooperatively transmitted to one user) according to the current radio channel conditions.
  • the cooperation set A includes RRU1, RRU2, the cooperation set B includes RRU2, RRU3, the cooperation set C includes RRU1, RRU2, and RRU3, and the cooperation set D includes RRU3 and RRU4.
  • the open flow controller OFC is used as the multicast relationship processing device, and the data access method for the wireless access network is provided in the embodiment of the present invention. Referring to FIG. 14, the method process includes:
  • the BBU sends a cooperation set relationship message to the MCU, and indicates, to the MCU, the RRU member corresponding to each collaboration set.
  • the MCU determines, according to the collaboration set relationship message, a correspondence between each collaboration set and each multicast group, and determines a multicast group membership according to the correspondence.
  • the MCU sends a message to the BBU, and the corresponding relationship between each collaboration set and each multicast group is notified to the BBUo.
  • the MCU sends a multicast group configuration message to each multicast-related RRU to inform the multicast group membership, that is, the multicast group to which the RRU belongs.
  • the MCU informs the multicast group to which the RRU belongs, and can implement the following information in the multicast group configuration message: carrying the address information of the multicast group (such as a MAC address, an IP address, etc.); or carrying the multicast Name information of the group; or carrying the serial number information of the multicast group (that is, the mapping relationship between the sequence number and the multicast group according to the protocol or signaling agreed in advance), and so on.
  • the address information of the multicast group such as a MAC address, an IP address, etc.
  • the multicast Name information of the group or carrying the serial number information of the multicast group (that is, the mapping relationship between the sequence number and the multicast group according to the protocol or signaling agreed in advance), and so on.
  • the MCU sends a multicast group configuration message to the OFC, and informs the multicast group membership, that is, the RRU corresponding to each multicast group.
  • the multicast group configuration message may also be sent in an incremental manner, that is, by adding or deleting certain multicast group members, to update the existing multicast group membership.
  • the multicast group membership can be indicated as follows:
  • the multicast group is indicated by carrying multicast group address information, multicast group name information, or multicast group sequence number information.
  • the RRU corresponding to the multicast group is indicated by carrying the RRU address information, the RRU ID information, or the RRU sequence number information.
  • the OFC sends the control information based on the OF protocol to the switch, instructing each switch to modify the flow table, but does not modify the destination address of the multicast data, that is, the OFC sends control information to each switch, indicating that each switch receives the multicast data, according to The multicast group corresponding to the destination address of the multicast data is forwarded to the multicast data.
  • the OFC sends a control information to the switch, as shown in FIG. 13:
  • the OFC sends control information to the switch 2, instructing the switch 2: when receiving the data whose destination address is the multicast group A, forwarding to the switch 1;
  • the data is forwarded to the switch 1 and the switch 3;
  • the data of the multicast group D is received, the data is forwarded to the switch 3;
  • the OFC sends control information to the switch 1 to indicate that the switch 1: forwards the data to the RRU2 when the destination address is the data of the multicast group B, and forwards the data when the destination address is the data of the multicast group A or the multicast group C.
  • the OFC sends control information to the switch 3, instructing the switch 3 to forward the data to the RRU3 when the destination address is the data of the multicast group B or the multicast group C.
  • the OFC sends control information to the switch 3, instructing the switch 3 to forward the data to the RRU3 when the destination address is the data of the multicast group B or the multicast group C.
  • the BBU sends the CoMP data to each multicast group by using the switch according to the correspondence between each collaboration set and each multicast group, including:
  • the BBU sends the COMP data to each switch according to the correspondence between the collaboration set and each multicast group;
  • Each switch forwards the received CoMP data according to its flow table.
  • the RRU of the CoMP data receives the destination address as the data of its MAC address or the multicast group address to which it belongs.
  • the MCU sets each multicast group for each collaboration set, and then sends a message to the BBU to inform the BBU of the correspondence between each collaboration set and each multicast group, and sends an anchor group configuration message to the RRU and the OFC to inform RRU and OFC multicast group membership.
  • the OFC determines the multicast path according to the membership of the multicast group, and sends control messages based on the OF protocol to each switch.
  • the flow table of each switch is configured. The switch does not need to modify the destination address of the multicast data, and the multicast data can also be Forward to each RRU correctly.
  • the MMC sends a multicast group membership determined according to the correspondence between each collaboration set and each multicast group in the BH network to the multicast.
  • the relationship processing device enables the multicast data transmission to be configured with the relevant BH network elements of each multicast group, thereby implementing multicast data transmission in the BH network, and reducing advanced cooperative transmission technologies such as C-RAN and CoMP.
  • the bandwidth requirement of the BH network enables the C-RAN to be widely applied to the actual deployment scenarios where the BH network bandwidth resources are limited.
  • the radio access network data transmission apparatus and system provided by the foregoing embodiments are only described by dividing the foregoing functional modules when performing radio access network data transmission.
  • the above function assignment is performed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • the embodiments of the wireless access network data transmission method, device, and system provided by the foregoing embodiments are in the same concept. For details, refer to the method embodiment, and details are not described herein again.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

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Abstract

本发明实施例提供了一种一种无线接入网络的数据传输方法、设备及系统，涉及移动通信网络领域，所述方法包括：组播关系处理装置接收组播控制装置发送的组播组配置消息，所述组播组配置消息指示了由各协作集与各组播组的对应关系确定的组播组成员关系；所述组播关系处理装置根据所述组播组成员关系与所述各组播组的相关BH网元配置组播数据传输。本发明通过组播控制装置将根据BH网络中的各协作集与各组播组对应关系确定的组播组成员关系发送给组播关系处理装置，使其能够与各组播组的相关BH网元配置组播数据传输，节省了BH网络的带宽，降低了C-RAN、CoMP等高级协作传输技术对BH网络的带宽要求。

Description

说 明 书 无线接入网络的数据传输方法、 设备及系统 技术领域
本发明涉及移动通信网络领域，特别涉及一种无线接入网络的数据传输方 法、 设备及系统。 背景技术
C-RAN ( Cloud-Radio Access Network, 云无线接入网 )是根据现网条件和 技术进步的趋势， 提出的新型无线接入网构架。 C-RAN采用基于云架构的基 带池， 控制分布式的 RRU ( Remote Radio Unit, 远端射频单元）， 使得小区之 间的协作更加便捷， 可以通过大范围的 CoMP ( Coordinated Multi-point , 协作 多点传输）， 因此， 这种无线接入网络的数据传输能够有效降低小区间的干扰， 提升无线网络容量， 改善边缘用户性能， 节约能源， 降低成本等， 但是， 与此 同时， C-RAN对 BH ( Backhaul, 回程） 网络的带宽也提出了更高的要求。
现有技术的无线接入网络的数据传输中， BH 网络的拓朴比较复杂， 可以 由多层的链状、 星状、 环状等不同结构组合而成， 从 BBU池到 RRU可以经过 多达十几跳的传输。 当 BH网络中有多个 RRU需要向用户协作传输数据时， 需要从 BBU ( Building Baseband Unit, 室内基带单元 )池将该数据同时复制同 时多份， 分别传输给所述的多个 RRU, 因此 BH网络中需要传输的数据量将会 成倍提高。
在实现本发明的过程中， 发明人发现现有技术至少存在以下问题： 在 BH网络中， CoMP协作点的数量越多， 需要传输的数据量就越大， 对 BH的带宽要求就越高。 为了满足 RRU数据量成倍增大的需求， 就需要大规模 地更换已铺设的线缆， 实施起来非常困难。 因此， 采用现有技术的无线网络的 数据传输方法， 无法使 C-RAN广泛地应用于 BH网络带宽资源有限的实际部 署场景中。 发明内容
为了解决现有技术的问题， 本发明实施例提供了一种无线接入网络的数据 传输方法、 系统及设备。 所述技术方案如下：
第一方面， 提供了一种无线接入网络的数据传输方法， 所述方法包括： 接 收组播控制装置发送的组播组配置消息， 所述组播组配置消息指示了由各协作 集与各组播组的对应关系确定的组播组成员关系， 所述对应关系及组播组成员 关系由所述组播控制装置或室内基带装置确定； 根据所述组播组成员关系与所 述各组播组的相关回程网络 BH网元配置组播数据传输。
结合第一方面， 在第一方面的第一种可能的实现方式中， 所述组播组成员 关系包括所述远端射频单元 RRU成员的组播组隶属关系， 所述组播组配置消 息通过携带组播组的地址信息、 组播组的名称信息、 或者组播组的序号信息指 示所述组播组隶属关系。
结合第一方面的第一种可能的实现方式， 在第一方面的第二种可能的实现 方式中， 所述根据所述组播组成员关系与所述各组播组的相关 BH网元配置组 播数据传输， 包括： 根据所述组播组成员关系确定其所隶属的组播组； 根据所 述确定的组播组向组播服务器发送因特网组管理协议 IGMP报文，请求更新其 组播组隶属关系， 以使相应的交换机监听所述 IGMP报文， 并根据所述 IGMP 报文更新组播地址表； 接收发往其所属的组播组的协作多点传输 CoMP数据， 所述 CoMP数据由室内基带装置根据所述各协作集与各组播组的对应关系发 送给所述交换机， 并由所述交换机根据更新后的组播地址表进行转发。
结合第一方面， 在第一方面的第三种可能的实现方式中， 所述组播组成员 关系包括各组播组对应的 RRU成员， 所述组播组配置消息通过如下方式指示 所述各组播组对应的 RRU成员： 通过携带组播组地址信息、 组播组名称信息 或组播组序号信息， 来指示组播组； 通过携带 RRU地址信息、 RRU的身份标 识码 ID信息或 RRU序号信息， 来指示组播组对应的 RRU成员。
结合第一方面的第三种可能的实现方式， 在第一方面的第四种可能的实现 方式中， 所述根据所述组播组成员关系与所述各组播组的相关 BH网元配置组 播数据传输， 包括： 根据所述组播组成员关系向交换机发送基于开放流 OF协 议的控制信息， 指示所述交换机修改流表， 以使所述交换机根据修改后的流表 对接收的组播数据进行转发或进行复制后转发， 直至相应的 RRU成员接收到 所述组播组数据。
结合第一方面的第四种可能的实现方式， 在第一方面的第五种可能的实现 方式中， 根据所述组播组成员关系向交换机发送基于 OF协议的控制信息， 指 示所述交换机修改流表， 包括： 向所述交换机发送控制信息， 指示所述交换机 接收到 CoMP数据时，根据所述 CoMP数据的目的地址对应的组播组，对所述 CoMP数据进行转发和 /或将所述 CoMP数据复制后修改所述目的地址为与所 述目的地址对应的组播组的 RRU成员的介质访问控制 MAC地址并发送给所 述 RRU成员； 或者在所述组播控制装置向 RRU成员发送组播组配置消息后， 向所述交换机发送控制信息， 指示所述交换机接收到 CoMP数据时， 根据所述 CoMP数据的目的地址对应的组播组， 对所述 CoMP数据进行转发。 第二方面， 提供一种无线接入网络数据传输方法， 所述方法包括： 获取组 播组成员关系； 向组播关系处理装置发送组播组配置消息， 以使得所述组播关 系处理装置根据所述组播组成员关系与所述各组播组的相关 BH网元配置组播 数据传输， 所述组播组配置消息指示了由各协作集与各组播组的对应关系确定 的组播组成员关系。
结合第二方面， 在第二方面的第一种可能的实现方式中， 当所述组播组关 系处理装置为开放流控制器 OFC时， 所述 BH网元包括远端射频单元 RRU成 员， 所述方法还包括： 向 RRU成员发送所述组播组配置消息。
结合第二方面或第二方面的第一种可能的实现方式，在第二方面的第二种 可能的实现方式中， 所述获取组播组成员关系， 包括： 接收室内基带装置发送 的协作集关系消息； 根据所述协作集关系消息确定所述各协作集与各组播组的 对应关系； 根据所述各协作集与各组播组的对应关系确定所述组播组成员关 系。
结合第二方面的第二种可能的实现方式， 在第二方面的第三种可能的实现 方式中， 所述方法还包括： 向室内基带装置发送消息， 告知所述室内基带装置 各协作集与各组播组的对应关系， 以使得所述室内基带装置根据所述各协作集 与各组播组的对应关系， 通过交换机向各组播组发送 CoMP数据。
结合第二方面或第二方面的第一种可能的实现方式，在第二方面的第四种 可能的实现方式中， 所述获取组播组成员关系， 包括： 接收室内基带装置发送 的消息， 所述消息指示了所述组播组成员关系。 第三方面， 提供一种无线接入网络数据传输方法， 所述方法包括： 获取各 协作集与各组播组的对应关系； 根据所述各协作集与各组播组的对应关系， 通 过交换机向各组播组发送协作多点传输 CoMP数据。
结合第三方面， 在第三方面的第一种可能的实现方式中， 所述获取各协作 集与各组播组的对应关系， 包括： 确定所述各协作集与各组播组的对应关系。
结合第三方面的第一种可能实现的方式， 在第三方面的第二种可能的实现 方式中， 所述方法还包括： 根据所述各协作集与各组播组的对应关系确定所述 组播组成员关系； 向组播控制装置发送消息， 指示所述组播组成员关系， 以使 得所述组播组控制装置向组播关系处理装置发送组播组配置消息， 所述组播组 配置消息指示了所述组播组成员关系。
结合第三方面， 在第三方面的第三种可能的实现纺织中， 所述获取各协作 集与各组播组的对应关系， 包括： 向组播控制装置发送协作集消息， 以使得所 述组播控制装置根据所述协作集关系消息确定所述各协作集与各组播组的对 应关系， 根据所述对应关系确定所述组播组成员关系， 向组播关系处理装置和 /或 RRU成员发送组播组配置消息， 所述组播组配置消息指示了所述组播组成 员关系； 接收所述组播控制装置发送的消息， 根据所述消息确定所述各协作集 与各组播组的对应关系。 第四方面， 提供一种组播关系处理装置， 包括： 接收模块， 用于接收组播 控制装置发送的组播组配置消息， 所述组播组配置消息指示了由各协作集与各 组播组的对应关系确定的组播组成员关系； 数据处理模块， 用于根据所述组播 组成员关系与所述各组播组的相关回程网络 BH网元进行数据传输。
结合第四方面， 在第四方面的第一种可能的实现方式中， 所述组播关系处 理装置为具有远端射频单元 RRU功能的设备， 所述数据处理模块还包括： 组 播组确定模块， 用于根据所述组播组成员关系确定所述组播关系处理装置所属 的组播组； 发送模块， 用于向组播服务器发送因特网组管理协议 IGMP报文， 请求更新其组播组隶属关系； 所述接收模块， 还用于接收室内基带装置根据所 述各协作集与各组播组的对应关系向其所属的组播组发送的协作多点传输 CoMP数据。
结合第四发面的第一种可能的实现方式， 在第四方面的第二种可能的实现 方式中， 所述组播关系处理装置为具有开放流控制器 OFC功能的服务器或独 立的网络设备； 所述数据处理模块还包括： 信息处理模块， 用于根据所述组播 组成员关系生成基于开放流 OF协议的控制信息， 所述控制信息用于指示交换 机修改流表， 具体为： 指示所述交换机接收到组播数据时， 根据所述组播数据 的目的地址对应的组播组，对所述组播数据进行转发和 /或将所述组播数据复制 后修改所述目的地址为与所述目的地址对应的组播组的 RRU成员的介质访问 控制 MAC地址并发送给所述 RRU成员； 或者在所述组播控制装置向 RRU成 员发送组播组配置消息后， 指示所述交换机接收到组播数据时， 根据所述数据 的目的地址对应的组播组， 对所述组播数据进行转发； 信息发送模块， 用于向 交换机发送所述控制信息。 第五方面， 提供一种组播控制装置， 包括： 成员关系获取模块， 用于获取 由各协作集与各组播组的对应关系确定的组播组成员关系； 发送模块， 用于向 组播关系处理装置， 所述组播组配置消息指示了所述组播组成员关系。
结合第五方面， 在第五方面的第一种可能的实现方式中， 所述发送模块， 还用于在组播关系处理装置为开放流控制器 OFC时向远端射频单元 RRU成员 发送所述组播组配置消息。
结合第五方面， 在第五方面的第二种可能的实现方式中， 所述成员关系获 取模块包括： 接收模块， 用于接收室内基带装置发送的协作集关系消息； 组播 组成员关系确定模块， 用于根据所述协作集关系消息确定所述各协作集与各组 播组的对应关系及根据所述对应关系确定所述组播组成员关系； 所述发送模 块， 还用于向所述室内基带装置发送消息， 告知所述室内基带装置各协作集与 各组播组的对应关系。
结合第五方面， 在第五方面的第三种可能的实现方式中， 所述成员关系获 取模块包括： 接收模块， 用于接收室内基带装置发送的消息， 所述消息指示了 所述组播组成员关系。
结合第五方面或第五方面的第一种或第二种或第三种可能的实现方式， 在 第五方面的第四种可能的实现方式中， 所述组播控制装置为独立的网络设备或 者设于室内基带装置或服务器上。
第六方面， 提供一种室内基带装置， 包括： 对应关系获取模块， 用于获取 各协作集与各组播组的对应关系； 信息处理模块， 用于根据所述各协作集与各 组播组的对应关系， 通过交换机向各组播组发送协作多点传输 CoMP数据。
结合第六方面， 在第六方面的第一种可能的实现方式中， 所述对应关系获 取模块包括： 组播组关系确定模块， 用于确定所述各协作集与各组播组的对应 关系， 根据所述对应关系确定组播组成员关系； 组播组成员关系发送模块， 用 于向组播控制装置发送消息， 所述消息指示了所述组播组成员关系。
结合第六方面， 在第六方面的第二种可能的实现方式中， 所述对应关系获 取模块还包括： 协作集关系发送模块， 用于向组播控制装置发送协作集消息， 所述协作集关系消息指示了各协作集所对应的远端射频单元 RRU成员； 接收 模块， 用于接收所述组播控制装置发送的消息， 所述消息指示了所述各协作集 与各组播组的对应关系。 第七方面， 提供一种无线接入网络数据传输系统， 包括： 组播控制装置、 组播关系处理装置和相关回程网络 BH网元； 所述组播控制装置， 用于向所述 组播关系处理装置发送组播组配置消息， 所述组播组配置消息指示了由各协作 集与各组播组的对应关系确定的组播组成员关系； 所述组播关系处理装置， 用 于接收所述组播控制装置发送的消息， 根据所述消息与所述各组播组的相关 BH网元配置组播数据传输； 所述相关 BH网元， 用于与所述组播关系处理装 置配置组播数据传输。
结合第七方面， 在第七方面的第一种可能的实现方式中， 所述组播关系处 理装置为具有远端射频单元 RRU功能的设备， 所述相关 BH网元包括交换机、 室内基带装置和组播服务器， 所述组播关系处理装置， 还用于根据所述组播组 成员关系确定其所属的组播组， 并向所述组播服务器发送特网组管理协议 IGMP报文， 请求更新其组播组隶属关系； 以及用于接收所述交换机转发的协 作多点传输 CoMP数据； 所述交换机， 用于侦听所述组播关系处理装置发送的 IGMP报文， 更新其组播地址表； 还用于接收所述室内基带装置发送的所述 CoMP数据， 以及根据所述组播地址表转发所述 COMP数据； 所述室内基带装 置， 用于根据所述协作集与各组播组的对应关系， 将所述 COMP数据发送给 所述交换机。
结合第七方面， 在第七方面的第二种可能的实现方式中， 所述组播关系处 理装置为具有开放流 OF协议所规定的开放流控制器 OFC功能的设备，所述相 关 BH网元包括交换机、 室内基带装置和 RRU成员； 所述组播关系处理装置， 用于根据所述组播组成员关系向交换机发送基于 OF协议的控制信息， 指示所 述交换机修改流表； 所述交换机， 用于根据所述控制信息修改流表； 还用于在 接收到所述室内基带装置发送的 CoMP数据时，根据所述 CoMP数据的目的地 址对应的组播组， 对所述 CoMP数据进行转发和 /或将所述 CoMP数据复制后 修改所述目的地址为与所述目的地址对应的组播组的 RRU成员的地址并发送 给所述 RRU成员； 所述室内基带装置， 用于根据所述协作集与各组播组的对 应关系， 将所述 COMP数据发送给所述交换机。
结合第七方面， 在第七方面的第三种可能的实现方式中， 所述组播关系处 理装置为含有 OF协议所规定的 OFC功能的设备，所述相关 BH网元包括交换 机、 室内基带装置和 RRU成员； 所述组播控制装置还用于向 RRU成员发送组 播组配置消息， 告知所述 RRU成员所属的组播组； 所述组播关系处理装置， 用于根据所述组播组成员关系向交换机发送基于 OF协议的控制信息， 指示所 述交换机修改流表； 所述交换机， 用于根据所述控制信息修改流表； 还用于在 接收到所述室内基带装置发送的 CoMP数据时，根据所述 CoMP数据的目的地 址对应的组播组， 对所述 CoMP数据进行转发； 所述室内基带装置， 用于根据 所述协作集与各组播组的对应， 将所述 COMP数据发送给所述交换机。
本发明实施例提供的技术方案的有益效果是：
通过组播控制装置将根据 BH网络中的各协作集与各组播组对应关系确定 的组播组成员关系发送给组播关系处理装置， 使其能够与各组播组的相关 BH 网元配置组播数据传输，从而在 BH网络中实现了采用组播技术进行数据传输， 节省了带宽， 降低了 C-RAN、 CoMP等高级协作传输技术对 BH网络的带宽要 求， 使 C-RAN能够广泛地应用于 BH网络带宽资源有限的实际部署场景中。 附图说明
为了更清楚地说明本发明实施例中的技术方案， 下面将对实施例描述中所 需要使用的附图作筒单地介绍， 显而易见地， 下面描述中的附图仅仅是本发明 的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下， 还可以根据这些附图获得其他的附图。
图 1为本发明实施例一提供的无线接入网络数据传输系统的装置结构示意 图；
图 2为本发明实施例二提供的无线接入网络数据传输系统的装置结构示意 图；
图 3为本发明实施例三提供的无线接入网络数据传输系统的装置结构示意 图； 图 4是本发明实施例四提供的无线接入网络数据传输方法流程图； 图 5是本发明实施例五提供的无线接入网络数据传输方法流程图； 图 6是本发明实施例六提供的无线接入网络数据传输方法流程图； 图 7是本发明实施例七提供的无线接入网络数据传输方法流程图； 图 8是实施例七的 BH网络的组播组成员关系的示意图；
图 9为图 7所示流程中 RRU向组播服务器发送 IGMP报告的示意图； 图 10为图 7所示流程中 BBU发送组播数据的示意图；
图 11为本发明实施例八提供的无线接入网络数据传输方法流程图； 图 12为图 11所示流程中 MCU向 OFC发送组播组配置消息的示意图; 图 13为图 11所示流程中 OFC向交换机发送控制信息的示意图； 图 14为本发明实施例九提供的无线接入网络数据传输方法流程图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚， 下面将结合附图对本发明 实施方式作进一步地详细描述。
发明人经过研究发现，利用组播技术能够有效降低 C-RAN和 CoMP对 BH 网络的带宽要求， 但是现有技术的组播技术或相关协议大多都是针对互联网 的， 不适用于移动通信网络， 其主要原因是现有组播技术的组播组其组播成员 是各用户主机根据用户兴趣决定的， 并且变化很慢， 所以各主机可以发送报告 来加入组播组； 但是在移动通信网络中， 向一个用户传输数据的 RRU变化很 快， 不能直接通过各 RRU发送报告来加入组播组， 实现组播数据的传输。 为 此本发明的发明人通过对 BH网络的研究， 成功的将组播技术应用于移动通信 网络， 降低了 C-RAN和 CoMP对 BH的带宽要求。
为了便于理解和描述， 在介绍具体方法之前， 首先结合附图对无线接入网 络数据传输的结构进行筒单介绍。
实施例一
参见图 1 ,本实施例提供了一种无线接入网络数据传输系统，该系统包括： MCU ( Multicast Control Unit, 组播控制单元） 11、 组播关系处理装置 12 及相关 BH网元 13。
MCU11 ,用于向组播关系处理装置发送组播组配置消息，所述组播组配置 消息指示了由各协作集与各组播组的对应关系确定的组播组成员关系； 组播关 系处理装置 12, 用于接收所述 MCU11发送的组播组配置消息， 根据所述组播 组成员关系与所述各组播组的相关 BH网元 13配置组播数据传输；相关 BH网 元 13, 用于与所述组播关系处理装置 12配置组播数据传输。
本实施例无线接入网络数据传输通过 MCU将由各协作集与各组播组的对 应关系确定的组播组成员关系告知组播关系处理装置， 从而实现数据在 BH网 络的组播传输， 降低了 C-RAN和 CoMP对 BH网络的带宽要求，使 C-RAN能 够广泛地应用于 BH网络带宽资源有限的实际部署场景中。 实施例二
参见图 2, 本实施例提供了另一种无线接入网络数据传输系统， 该系统包 括：
MCU21、 组播关系处理装置 22及相关 BH网元。
具体的， 组播关系处理装置 22为含有 RRU功能的设备， 如 RRU、 移动通信 基地站 BS或 RRU与部分 BBU功能结合的设备。 该组播关系处理装置 22包括接 收模块 221和数据处理模块 222。
接收模块 221 , 用于接收 MCU21发送的组播组配置消息， 该组播组配置 消息指示了由各协作集与各组播组的对应关系确定的组播组成员关系； 还用于 接收 BBU231根据所述各协作集与各组播组的对应关系向其所属的组播组发送 的 CoMP数据。
数据处理模块 222, 用于根据所述组播组成员关系与所述各组播组的相关 BH网元进行数据传输。 该数据模块还包括： 组播组确定模块 2221 , 用于根据 该组播组成员关系确定组播关系处理装置 22所属的组播组； 发送模块 2222, 用于向组播服务器 233发送 IGMP ( Internet Group Management Protocol , 因特 网组管理协议）报文， 请求更新其组播组隶属关系。
MCU21包括成员关系获取模块 211及发送模块 212。
成员关系获取模块 211 , 用于获取由各协作集与各组播组的对应关系确定 的组播组成员关系， 包括接收模块 2111及组播组关系确定模块 2112。 接收模 块 2111 ,用于接收 BBU231发送的协作集关系消息；组播组关系确定模块 2112, 用于根据该协作集关系消息确定各协作集与各组播组的对应关系及根据该对 应关系确定组播组成员关系。
发送模块 212, 用于向 BBU231发送消息， 告知 BBU231各协作集与各组 播组的对应关系； 还用于向组播关系处理装置 22发送组播组配置消息， 所述 组播组配置消息指示了由各协作集与各组播组的对应关系确定的组播组成员 关系。
具体的， MUC可以是独立的网络设备， 也可以设于 BBU或服务器上。 BH网元包括 BBU231、 交换机 232和组播服务器 233。
BBU231 , 包括对应关系获取模块 2311和信息处理模块 2312。
对应关系获取模块 2311 ,用于获取各协作集与各组播组的对应关系， 包括 协作集关系发送模块 2313和接收模块 2314。 协作集关系发送模块 2313 , 用于 向 MCU21发送协作集消息， 所述协作集关系消息指示了各协作集所对应的远 端射频单元； 接收模块 2314, 用于接收 MCU21发送的消息， 所述消息包含所 述各协作集与各组播组的对应关系；
信息处理模块 2312, 用于根据各协作集与各组播组的对应关系， 通过交换 机 232向各组播组发送 CoMP数据。
交换机 232 , 用于侦听组播关系处理装置 22发送的 IGMP ( Internet Group Management Protocol , 因特网组管理协议 )报文， 更新其组播地址表； 还用于 接收 BBU231发送的 CoMP数据， 以及根据组播地址表转发该 COMP数据。
本实施例中， 组播关系处理装置即为各组播组的 RRU成员。 MCU确定各 协作集与各组播组的对应关系， 以及根据该对应关系确定组播组成员关系， 然 后向 BBU发送消息， 告知各协作集与各组播组的对应关系； 并向组播关系处 理装置发送组播组配置消息， 告知该组播关系处理装置单元所属的组播组， 由 该组播关系处理装置根据该消息的指示， 确定自己属于哪些组播组， 然后据此 发送 IGMP报告， 加入或退出相应的组播组， 并接收来自于其所属组播组的 CoMP数据。 交换机侦听到相应的 IGMP报文后， 更新其组播地址表， 将来自 相应组播组的数据， 转发到相应的 RRU成员， 即组播关系处理装置。 从而实 现了在 BH网络中支持从 BBU到各协作集的组播传输，降低了 C-RAN、 CoMP 等高级协作传输技术对 BH网络的带宽要求。 实施例三
参见图 3,本实施例提供了一种无线接入网络数据传输系统，该系统包括： MCU31、 组播关系处理装置 32及相关 BH网元。
组播关系处理装置 32为具有 OFC ( OpenFlow Controller, 开放流控制器） 功能的服务器或独立的网络设备， 包括接收模块 321和数据处理模块 322。 接收模块 321 ,用于接收组播控制装置 31发送的组播组配置消息，该组播 组配置消息指示了由各协作集与各组播组的对应关系确定的组播组成员关系； 数据处理模块 322, 用于根据该组播组成员关系与各组播组的 BH网元进 行数据传输。数据处理模块 322包括信息处理模块 3221和信息发送模块 3222。
信息处理模块 3221 , 用于根据所述组播组成员关系生成基于 OF ( OpenFlow,开放流）协议的控制信息，该控制信息用于指示交换机修改流表， 具体为： 指示所述交换机其接收到组播数据时， 根据该组播数据的目的地址对 应的组播组，对该组播数据进行转发和 /或将该组播数据复制后修改该目的地址 为与该目的地址对应的组播组的 RRU成员的地址并发送给该 RRU成员。
发送模块 3222, 用于向交换机发送该控制信息。
MUC31 包括成员关系获取模块 311和发送模块 312。 成员关系获取模块 311 , 用于获取由各协作集与各组播组的对应关系确定的组播组成员关系， 包 括接收模块（图未示）。 接收模块， 用于接收 BBU331发送的消息， 该消息指 示了组播组成员关系。发送模块 312,用于向组播关系处理装置 32发送组播组 配置消息， 所述组播组配置消息指示了由各协作集与各组播组的对应关系确定 的组播组成员关系。 需要说明的是， MUC 可以是独立的网络设备， 也可以设 于 BBU或服务器上。
相关 BH网元包括 BBU331、 交换机 332和 RRU成员 333。
BBU331包括对应关系获取模块 3311和信息处理模块 3312。
对应关系获取模块 3311包括组播关系确定模块 3313、 组播成员关系发送 模块 3314。 组播组关系确定模块 3313, 用于确定各协作集与各组播组的对应 关系及根据该对应关系确定组播组成员关系； 组播组成员关系发送模块 3314, 用于向 MCU31发送消息， 该消息包含组播组成员关系。
信息处理模块 3312,用于根据各协作集与各组播组的对应关系，通过交换 机 332向所述各组播组发送 CoMP数据。
交换机 332, 用于根据组播关系处理装置 32发送的控制信息修改流表； 还 用于在接收到 BBU331发送的 CoMP数据时， 根据该 CoMP数据的目的地址对应 的组播组， 对该 CoMP数据进行转发和 /或将该 CoMP数据复制后修改该目的地 址为与该目的地址对应的组播组的 RRU成员的地址并发送给该 RRU成员。
具体的， MUC的发送模块还可以同时向 RRU成员发送组播组成员配置消 息。 此时组播信息处理单元的信息发送模块向交换机发送的控制信息， 指示交 换机在接收到所述 BBU发送的 CoMP数据时无需修改该 CoMP数据的目的地址， 而是根据所述 CoMP数据的目的地址对应的组播组， 对所述 CoMP数据进行转 发。 此时交换机用于在接收到所述 BBU发送的 CoMP数据时， 根据所述 CoMP 数据的目的地址对应的组播组， 对所述 CoMP数据进行转发。
本实施例中， 由 BBU 来针对各个协作集设置各个组播组， 然后向 MCU 发送消息， 告知其组播成员关系， 并由 MCU向 OFC发送主播组配置消息， 告 知 OFC组播组成员关系。 OFC根据组播组的成员关系， 确定组播路径， 并向 各交换机发送基于 OF协议的控制消息， 配置各交换机的流表。 从而实现了在 BH网络中支持从 BBU到各协作集的组播传输， 降低了 C-RAN、 CoMP等高 级协作传输技术对 BH网络的带宽要求。 下面基于上述集群系统的架构，对本发明提供的无线接入网络数据传输方 法进行详细的说明。
实施例四
本实施例以从组播关系处理装置的角度实现组播数据传输为例，提供了一 种无线接入网络数据传输方法， 参见图 4, 该方法流程包括：
401 ,组播关系处理装置接收 MCU发送的组播组配置消息，所述组播组配 置消息指示了由各协作集与各组播组的对应关系确定的组播组成员关系， 所述 对应关系及组播组成员关系由所述组播控制装置或室内基带装置确定；
具体的，组播组成员关系可以通过如下方法确定： BBU确定各协作集与各 组播组的对应关系， 然后 居该对应关系确定组播组成员关系， 再由 BBU向 MCU发送消息， 指示各组播组的 RRU成员； 或者 MCU接收 BBU发送的协 作集关系消息， 并根据所述协作集关系消息确定各协作集与各组播组的对应关 系， 然后根据该对应关系确定组播组成员关系。
具体的， 所述的协作集是指向一个用户进行 CoMP协作传输的多个 RRU 的集合； 协作集关系是指各协作集与 RRU成员的关系。
402, 所述组播关系处理装置根据所述组播组成员关系与所述各组播组的 相关 BH网元配置组播数据传输。
具体的， 组播关系处理装置可以是： RRU或包含 RRU功能的设备， 也可 以是开放流控制器 OFC或包含 OFC功能的设备。 各组播组的相关 BH网元至 少包括如下网元设备中的一个： BBU、 RRU或包含 RRU功能的设备、 OFC或 包含 OFC功能的设备以及交换机等。
具体的， 若所述组播关系处理装置为 RRU或包含 RRU功能的设备， 所述 组播关系处理装置根据所述组播组配置消息与所述各组播组的相关 BH网元配 置组播数据传输， 包括：
组播关系处理装置根据所述组播组成员关系确定其所隶属的组播组； 组播关系处理装置向组播服务器发送因特网组管理协议 IGMP报文，请求 更新其组播组隶属关系， 以使交换机通过监听所述 IGMP报文更新其组播地址 表；
组播关系处理装置接收由室内基带装置根据所述各协作集与各组播组的 对应关系向该组播关系处理装置所属的组播组发送的 CoMP数据， 该 CoMP 数据由交换机根据更新后的组播地址表进行转发。
若所述组播关系处理装置为开放流控制器 OFC或包含 OFC功能的设备， 所述组播关系处理装置根据所述组播组配置消息与所述各组播组的相关 BH网 元配置组播数据传输， 包括： 组播关系处理装置根据所述组播组成员关系向交 换机发送基于开放流 OF协议的控制信息， 以使所述交换机根据修改后的流表 对接收的组播数据进行转发或进行复制后转发， 直至相应的 RRU成员接收到 所述组播组数据。
本实施例中， 由 MCU或 BBU来针对各个协作集确定协作集与各个组播组 的对应关系及每个组播组的 RRU成员， 再由 MCU将相应的组播组成员关系告 知组播关系处理装置， 从而实现数据在 BH网络的组播传输， 节省了 BH网络的 带宽， 降低了 C-RAN和 CoMP对 BH网络的带宽要求，使 C-RAN能够广泛地应用 于 BH网络带宽资源有限的实际部署场景中。
需要说明的是， 本发明实施例中： RRU为远端射频单元； RRU成员为具 有 RRU功能的设备， 如 RRU、 BS (Base Station, 移动通信基地站）、 一个 RRU 与部分 BBU 功能结合的设备等； 协作集为向一个用户进行协作传输的多个 RRU成员的集合； 协作集关系指各协作集与各 RRU成员的关系。 实施例五
本实施例以从组播控制装置 MCU的角度实现组播数据传输为例， 提供了 一种无线接入网络数据传输方法， 参见图 5, 该方法流程包括： 501 , MCU获取组播组成员关系。
具体的， MCU获取组播组成员关系可以通过如下如下方法实现： 方法一： MCU接收室内基带装置发送的协作集关系消息； 根据所述协作 集关系消息确定所述各协作集与各组播组的对应关系； 根据所述各协作集与各 组播组的对应关系确定所述组播组成员关系。 进一步的， MCU还向室内基带 装置发送消息， 告知所述室内基带装置各协作集与各组播组的对应关系， 以使 得所述室内基带装置根据所述各协作集与各组播组的对应关系， 通过交换机向 各组播组发送 CoMP数据。
方法二： MCU接收室内基带装置发送的消息， 所述消息指示了所述组播 组成员关系。
502, MCU向组播关系处理装置发送组播组配置消息， 以使得该组播关系 处理装置根据所述组播组成员关系与所述各组播组的相关 BH网元配置组播数 据传输， 所述组播组配置消息指示了由各协作集与各组播组的对应关系确定的 组播组成员关系。
本实施例中，由 MCU将获取到的组播组成员关系告知组播关系处理装置， 从而实现数据在 BH网络的组播传输， 节省了 BH网络的带宽， 降低了 C-RAN 和 CoMP对 BH网络的带宽要求， 使 C-RAN能够广泛地应用于 BH网络带宽 资源有限的实际部署场景中。 实施例六
本实施例以从室内基带单元 BBU的角度实现组播数据传输为例， 提供了 一种无线接入网络数据传输方法， 参见图 6, 该方法流程包括：
601 , BBU获取各协作集与各组播组的对应关系。
具体的， BBU 获取各协作集与各组播组的对应关系可以通过如下方法实 现：
方法一： 由 BBU确定各协作集与各组播组的对应关系。 此时， BBU根据 所述各协作集与各组播组的对应关系确定所述组播组成员关系， 并向 MCU发 送消息， 指示所述组播组成员关系， 以使得所述 MCU向组播关系处理装置发 送组播组配置消息， 所述组播组配置消息指示了所述组播组成员关系。
方法二： BBU向 MCU发送协作集消息， 以使得所述 MCU根据所述协作 集关系消息确定所述各协作集与各组播组的对应关系， 并根据所述对应关系确 定所述组播组成员关系， 向组播关系处理装置和 /或 RRU成员发送组播组配置 消息， 所述组播组配置消息指示了所述组播组成员关系； BBU接收 MCU发送 的消息， 所述消息指示了所述各协作集与各组播组的对应关系。
602, BBU根据所述各协作集与各组播组的对应关系， 通过交换机向各组 播组发送 CoMP数据。
本实施例中， BBU与 MCU进行信息交互， 获取各协作集与各组播组的对 应关系， 并由 MCU将获取到的组播组成员关系告知组播关系处理装置， 因此 BBU能够根据各协作集与各组播组的对应关系，通过交换机向所述各组播组发 送 CoMP数据，从而实现数据在 BH网络的组播传输，节省了 BH网络的带宽， 降低了 C-RAN和 CoMP对 BH网络的带宽要求，使 C-RAN能够广泛地应用于 BH网络带宽资源有限的实际部署场景中。 实施例七
在本实施例中， 以从无线接入网络数据传输系统的角度实现组播数据传输 为例， 提供了一种无线接入网络数据传输方法， 在本实施例中， 相关 BH网络 能够支持因特网组管理协议 IGMP。
请一同参阅图 8, 本实施例以设有 4个 RRU, 并且能够进行 CoMP传输的移 动网络为例， 对无线接入网络数据传输方法进行详细说明。 对于不同的用户， BBU (图中位于基带池内）可以根据当时的无线信道条件， 使用不同的协作集 (即向一个用户进行协作传输的多个 RRU的集合）进行传输。 假设该移动网络 中需要使用 4个不同的协作集， 其中协作集 A包括 RRU1、 RRU2, 协作集 B包括 RRU2、 RRU3,协作集 C包括 RRU1、 RRU2、 RRU3,协作集 D包括 RRU3、 RRU4。
本实施例中将 RRU作为组播关系处理装置， 本实施例提供的一种无线接 入网络数据传输方法， 参见图 7, 方法流程包括：
701 , BBU向 MCU发送协作集关系消息， 向 MCU指示各协作集所对应的
702 , MCU根据所述协作集关系消息确定所述各协作集与各组播组的对应 关系， 根据该对应关系确定组播组成员关系。
本步骤具体为： MCU为每个协作集分配一个组播组， 即将协作集 A、 B、 C、 D与组播组 、 B、 C、 D进行映射， 其中每个组播组都具有一个确定的组播 地址。 然后根据所述各协作集与各组播组的对应关系确定各组播组中的 RRU。 703, MCU向 BBU发送消息， 将所述各协作集与各组播组的对应关系告知 BBU。
704, MCU向每个与组播相关的 RRU发送组播组配置消息， 告知其组播 组成员关系， 即各组播组所对应的 RRU。
如图 3所示， 本步骤具体包括： MCU向 RRU1发送组播组配置消息， 指示 出 RRU1隶属的组播组 A、 组播组 C; MCU向 RRU2发送组播组配置消息， 指示 出 RRU2隶属的组播组 A、 组播组 B、 组播组 C; MCU向 RRU3发送组播组配置 消息， 指示出 RRU3隶属的组播组 B、 组播组 C、 组播组 D; MCU向 RRU4发送 组播组配置消息， 指示出 RRU4隶属的组播组 D。
MCU告知各 RRU所属的组播组， 可以通过在组播组配置消息中携带如下 信息的方式实现： 携带组播组的地址信息（MAC ( Media Access Control, 如组 播介质访问控制）地址、 IP (Internet Protocol, 组播网际协议)地址等）； 或者携 带组播组的名称信息； 或者携带组播组的序号信息（即根据预先通过协议或信 令约定的序号与组播组的映射关系）， 等等。
705, RRU收到 MCU发送的组播组配置消息后， 根据该组播组配置消息中 的组播组成员关系， 确定自己所属的组播组。
706, RRU向组播服务器发送 IGMP报告， 请求更新其组播组隶属关系， 如 图 9所示。
具体的， RRU可以通过 IGMP报告加入某些组播组， 也可以通过 IGMP报告 退出某些组播组， 以更新其组播组隶属关系。
707, 交换机侦听到 RRU发送的 IGMP报文， 更新其组播地址表。
708, BBU根据各协作集与各组播组的对应关系， 通过交换机向各组播组 发送 CoMP数据， 如图 10所示具体包括：
BBU根据所述协作集与各组播组的对应， 将所述 COMP数据发送给交换 机；
交换机根据其组播地址表， 对 COMP数据进行转发；
该 COMP数据的 RRU接收目的地址为其 MAC地址或其所属组播组地址的 数据。
本实施例中， 由 MCU确定各个协作集与各个组播组的对应关系， 然后向 BBU发送消息， 告知各协作集与各组播组的对应关系； 并向 RRU发送组播组配 置消息， 告知该 RRU所属的组播组。 RRU根据该消息的指示， 确定自己属于哪 些组播组， 然后据此发送 IGMP报告， 加入或退出相应的组播组， 并接收来自 于所属组播组的数据。 交换机侦听到相应的 IGMP报文后， 更新其组播地址表, 将来 BBU的数据， 转发到相应的 RRU。 从而实现了在 BH网络中支持从 BBU到 各协作集的组播传输， 降低了 C-RAN、 CoMP等高级协作传输技术对 BH网络的 带宽要求。 实施例八
在本实施例中， 以从无线接入网络数据传输系统的角度实现组播数据传输 为例， 提供了另一种无线接入网络数据传输方法， 在本实施例中， 相关 BH网 络支持开放流 OF交换。
首先， 请参阅图 8, 本实施例仍以设有 4个 RRU可以进行 CoMP传输的移动 网络为例，对无线接入网络数据传输方法进行详细说明。对于不同的用户， BBU (图中位于基带池内）可以根据当时的无线信道条件， 使用不同的 CoMP协作 集（即向一个用户进行协作传输的多个 RRU的集合）进行传输。 假设该移动网 络中需要使用 4个不同的协作集， 其中协作集 A包括 RRU1、 RRU2, 协作集 B包 括 RRU2、 RRU3, 协作集 C包括 RRU1、 RRU2、 RRU3 , 协作集 D包括 RRU3、 RRU4。
本实施例中将开放流控制器 OFC作为组播关系处理装置， 本发明实施例提 供的一种无线接入网络数据传输方法， 参见图 11 , 该方法流程包括：
801 , BBU向 MCU发送协作集关系消息， 向 MCU指示各协作集所对应的
802 , MCU根据所述协作集关系消息确定所述各协作集与各组播组的对应 关系， 根据所述对应关系确定组播组成员关系。
具体的， MCU为每个 CoMP协作集分别分配一个组播组， 即将协作集 A、 B、 C、 D与组播组 、 B、 C、 D进行映射， 其中每个组播组都具有一个确定 的组播地址。 然后根据所述各协作集与各组播组的对应关系确定各组播组中的
803, MCU向 BBU发送消息， 将所述各协作集与各组播组的对应关系告 知 BBUo
804, MCU向 OFC发送组播组配置消息， 告知其组播组成员关系， 即各组 播组所对应的 RRU。 具体的， MCU向 OFC发送组播组配置消息， 如图 7所示：
该组播组成员关系的内容包括： 组播组 A对应 RRU1、 RRU2; 组播组 B对 应 RRU2、 RRU3; 组播组 C对应 RRU1、 RRU2、 RRU3; 组播组 D对应 RRU3、
RRU4。
该组播组配置消息也可以通过增量的方式发送， 即通过增加或删除某些组 播组成员， 来更新现有的组播组成员关系。
该组播组配置消息中， 可以通过如下方式指示该组播组成员关系： 通过携带组播组地址信息、 组播组名称信息或组播组序号信息， 来指示组 播组；
通过携带 RRU地址信息、 RRU的 ID(Identity, 身份标识码)信息或 RRU序号 信息， 来指示组播组对应的 RRU成员。
805, OFC向交换机发送基于 OF协议的控制信息，指示各交换机修改流表， 具体为：
OFC向各交换机发送控制信息， 指示各交换机在接收到组播数据时， 根据 该组播数据的目的地址对应的组播组，对该组播数据进行转发和 /或将该组播数 据复制后修改该目的地址为与该目的地址对应的组播组的 RRU的地址并发送 给该 RRU。
具体的， OFC向交换机发送控制信息， 如图 13所示：
OFC向交换机 2发送控制信息， 指示交换机 2: 当收到目的地址为组播组 A 的数据时， 转发给交换机 1; 当收到目的地址为组播组 B或组播组 C的数据时， 转发给交换机 1和交换机 3; 当收到目的地址为组播组 D的数据时， 转发给交换 机 3;
OFC向交换机 1发送控制信息， 指示交换机 1 : 当收到目的地址为组播组 B 的数据时， 修改其目的地址为 RRU2的 MAC地址并转发给 RRU2; 当收到目的 地址为组播组 A或组播组 C的数据时， 复制为 2份数据， 一份修改目的地址为 RRU1的 MAC地址并转发给 RRU1 ,另一份修改目的地址为 RRU2的 MAC地址并 转发给 RRU2;
OFC向交换机 3发送控制信息， 指示交换机 3: 当收到目的地址为组播组 B 或组播组 C的数据时， 修改其目的地址为 RRU3的 MAC地址并转发给 RRU3; 当 收到目的地址为组播组 D的数据时，复制为 2份数据，一份修改目的地址为 RRU3 的 MAC地址并转发给 RRU3 , 另一份修改目的地址为 RRU4的 MAC地址并转发 给 RRU4。
806, BBU根据各协作集与各组播组的对应关系， 通过各交换机向各组播 组发送 CoMP数据。
具体的， BBU根据所述协作集与各组播组的对应关系， 将所述 COMP数 据发送给相应的交换机；
交换机根据其流表，按照所述 CoMP数据的目的地址对应的组播组将所述 COMP数据进行转发和 /或将所述 CoMP数据复制后修改其目的地址为与所述 中， RRU接收目的地址为其 MAC地址的数据。
本实施例中， 由 MCU 来针对各个协作集设置各个组播组， 然后向 BBU 发送消息， 告知各协作集与各组播组的对应关系， 并向 OFC发送主播组配置 消息， 告知 OFC各组播组的成员。 OFC根据组播组的成员关系， 确定组播路 径， 并向个交换机发送基于 OF协议的控制消息， 配置各交换机的流表， 指示 所述各交换机在接收到组播数据时， 根据所述数据的目的地址对应的组播组， 对所述组播数据进行转发和 /或将所述组播数据复制后修改所述目的地址为与 所述目的地址对应的组播组的 RRU的地址并发送给所述 RRU, 使组播数据能 够被正确地转发到各 RRU。 从而实现了在 BH网络中支持从 BBU到各协作集 的组播传输， 降低了 C-RAN、 CoMP等高级协作传输技术对 BH网络的带宽要 求。 实施例九
在本实施例中， 以从无线接入网络数据传输系统的角度实现组播数据传输 为例， 提供了另一种无线接入网络数据传输方法。
在本实施例中， 相关 BH网络支持 OF交换。
首先， 请参阅图 8, 本实施例仍以设有 4个 RRU可以进行 CoMP传输的 移动网络为例，对无线接入网络数据传输方法进行详细说明。对于不同的用户， BBU (图中位于基带池内） 可以根据当时的无线信道条件， 使用不同的 CoMP 协作集（即向一个用户进行协作传输的多个 RRU的集合）进行传输。 假设该 移动网络中需要使用 4个不同的协作集， 其中协作集 A包括 RRU1、 RRU2, 协作集 B包括 RRU2、 RRU3, 协作集 C包括 RRU1、 RRU2、 RRU3 , 协作集 D包括 RRU3、 RRU4。 本实施例中将开放流控制器 OFC作为组播关系处理装置， 本发明实施例 提供的一种无线接入网络数据传输方法， 参见图 14, 方法流程包括：
901 , BBU向 MCU发送协作集关系消息， 向 MCU指示各协作集所对应 的 RRU成员。
902 , MCU根据所述协作集关系消息确定所述各协作集与各组播组的对应 关系， 根据所述对应关系确定组播组成员关系。
903 , MCU向 BBU发送消息， 将所述各协作集与各组播组的对应关系告 知 BBUo
904, MCU向每个组播相关的 RRU发送组播组配置消息， 告知其组播组 成员关系， 即该 RRU所属的组播组。
具体的， MCU告知各 RRU所属的组播组， 可以通过在组播组配置消息中 携带如下信息的方式实现：携带组播组的地址信息（如 MAC地址、 IP地址等）； 或者携带组播组的名称信息； 或者携带组播组的序号信息（即根据预先通过协 议或信令约定的序号与组播组的映射关系）， 等等。
905 , MCU向 OFC发送组播组配置消息， 告知其组播组成员关系， 即各 组播组所对应的 RRU。
具体的， 该组播组配置消息也可以通过增量的方式发送， 即通过增加或删 除某些组播组成员， 来更新现有的组播组成员关系。
该组播组配置消息中， 可以通过如下方式指示组播组成员关系：
通过携带组播组地址信息、 组播组名称信息或组播组序号信息， 来指示组 播组；
通过携带 RRU地址信息、 RRU的 ID信息或 RRU序号信息， 来指示组播 组对应的 RRU。
906, OFC向交换机发送基于 OF协议的控制信息， 指示各交换机修改流 表， 但不修改组播数据的目的地址， 即 OFC向各交换机发送控制信息， 指示 各交换机接收到组播数据时， 根据该组播数据的目的地址对应的组播组， 对该 组播数据进行转发。
具体的， OFC向交换机发送控制信息的示意图， 如图 13所示： OFC向 交换机 2发送控制信息，指示交换机 2: 当收到目的地址为组播组 A的数据时， 转发给交换机 1 ; 当收到目的地址为组播组 B或组播组 C的数据时， 转发给交 换机 1和交换机 3; 当收到目的地址为组播组 D的数据时， 转发给交换机 3; OFC向交换机 1发送控制信息， 指示交换机 1: 当收到目的地址为组播组 B的数据时，转发给 RRU2;当收到目的地址为组播组 A或组播组 C的数据时， 转发给 RRU1和 RRU2;
OFC向交换机 3发送控制信息， 指示交换机 3: 当收到目的地址为组播组 B或组播组 C的数据时，转发给 RRU3,当收到目的地址为组播组 D的数据时， 转发给 RRU3和 RRU4。
407, BBU根据各协作集与各组播组的对应关系， 通过各交换机向各组播 组发送 CoMP数据， 具体包括：
BBU根据该协作集与各组播组的对应关系， 将所述 COMP数据发送给各 交换机；
各交换机根据其流表， 对收到的 CoMP数据进行转发。
该 CoMP数据的 RRU接收目的地址为其 MAC地址或其所属组播组地址 的数据。
本实施例中， 由 MCU 来针对各个协作集设置各个组播组， 然后向 BBU 发送消息， 告知 BBU各协作集与各组播组的对应关系， 并向 RRU及 OFC发 送主播组配置消息，告知 RRU及 OFC组播组成员关系。 OFC根据组播组的成 员关系， 确定组播路径， 并向各交换机发送基于 OF协议的控制消息， 配置各 交换机的流表， 交换机无需修改组播数据的目的地址， 也能使组播数据被正确 地转发到各 RRU。 从而实现了在 BH网络中支持从 BBU到各协作集的组播传 输， 降低了 C-RAN、 CoMP等高级协作传输技术对 BH网络的带宽要求。 综上所述， 本发明实施例无线接入网络数据传输方法、 装置及系统， 由 MUC将根据 BH网络中的各协作集与各组播组对应关系确定的组播组成员关 系发送给组播关系处理装置， 使其能够与各组播组的相关 BH网元配置组播数 据传输，从而在 BH网络中实现了采用组播技术进行数据传输，降低了 C-RAN、 CoMP等高级协作传输技术对 BH网络的带宽要求， 使 C-RAN能够广泛地应 用于 BH网络带宽资源有限的实际部署场景中。
需要说明的是： 上述实施例提供的无线接入网络数据传输装置及系统在进 行无线接入网络数据传输时， 仅以上述各功能模块的划分进行举例说明， 实际 应用中， 可以根据需要而将上述功能分配由不同的功能模块完成， 即将设备的 内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外， 上述实施例提供的无线接入网络数据传输方法、装置及系统的实施例属于同一 构思， 其具体实现过程详见方法实施例， 这里不再赘述。 本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通 过硬件来完成， 也可以通过程序来指令相关的硬件完成， 所述的程序可以存储 于一种计算机可读存储介质中， 上述提到的存储介质可以是只读存储器， 磁盘 或光盘等。 以上所述仅为本发明的较佳实施例， 并不用以限制本发明， 凡在本发明的 精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的 保护范围之内。

Claims

权 利 要 求 书
1、 一种无线接入网络数据传输方法， 其特征在于， 所述方法包括： 接收组播控制装置发送的组播组配置消息， 所述组播组配置消息指示了由 各协作集与各组播组的对应关系确定的组播组成员关系， 所述对应关系及组播 组成员关系由所述组播控制装置或室内基带装置确定；
根据所述组播组成员关系与所述各组播组的相关回程网络 BH 网元配置组 播数据传输。
2、 如权利要求 1所述的方法， 其特征在于， 所述组播组成员关系包括远端 射频单元 RRU成员的组播组隶属关系， 所述组播组配置消息通过携带组播组的 地址信息、 组播组的名称信息、 或者组播组的序号信息指示所述组播组隶属关 系。
3、 如权利要求 2所述的方法， 其特征在于， 所述根据所述组播组成员关系 与所述各组播组的相关 BH网元配置组播数据传输， 包括：
根据所述组播组成员关系确定其隶属的组播组；
根据所述确定的组播组向组播服务器发送因特网组管理协议 IGMP报文， 请求更新其组播组隶属关系， 以使相应的交换机监听所述 IGMP报文， 并根据 所述 IGMP 艮文更新组播地址表；
接收发往其所属的组播组的协作多点传输 CoMP数据， 所述 CoMP数据由 室内基带装置根据所述各协作集与各组播组的对应关系发送给所述交换机， 并 由所述交换机根据更新后的组播地址表进行转发。
4、 如权利要求 1所述的方法， 其特征在于， 所述组播组成员关系包括各组 播组对应的 RRU成员， 所述组播组配置消息通过如下方式指示所述各组播组对 应的 RRU成员：
通过携带组播组地址信息、 组播组名称信息或组播组序号信息， 指示组播 组；
通过携带 RRU地址信息、 RRU的身份标识码 ID信息或 RRU序号信息， 指示组播组对应的 RRU成员。
5、 如权利要求 4所述的方法， 其特征在于， 所述根据所述组播组成员关系 与所述各组播组的相关 BH网元配置组播数据传输， 包括：
根据所述组播组成员关系向交换机发送基于开放流 OF协议的控制信息，指 示所述交换机修改流表， 以使所述交换机根据修改后的流表对接收的组播数据 进行转发或进行复制后转发， 直至相应的 RRU成员接收到所述组播组数据。
6、 如权利要求 5所述的方法， 其特征在于， 所述根据所述组播组成员关系 向交换机发送基于 OF协议的控制信息， 指示所述交换机修改流表， 包括：
向所述交换机发送控制信息， 指示所述交换机接收到 CoMP数据时， 根据 所述 CoMP数据的目的地址对应的组播组， 对所述 CoMP数据进行转发和 /或将 所述 CoMP 数据复制后修改所述目的地址为与所述目的地址对应的组播组的 RRU成员的介质访问控制 MAC地址并发送给所述 RRU成员； 或者
在所述组播控制装置向 RRU成员发送组播组配置消息后， 向所述交换机发 送控制信息， 指示所述交换机接收到 CoMP数据时， 根据所述 CoMP数据的目 的地址对应的组播组， 对所述 CoMP数据进行转发。
7、 一种无线接入网络数据传输方法， 其特征在于， 所述方法包括： 获取组播组成员关系；
向组播关系处理装置发送组播组配置消息， 以使得所述组播关系处理装置 根据所述组播组成员关系与所述各组播组的相关回程网络 BH 网元配置组播数 据传输， 所述组播组配置消息指示了由各协作集与各组播组的对应关系确定的 组播组成员关系。
8、 如权利要求 7所述的方法， 其特征在于， 当所述组播组关系处理装置为 开放流控制器 OFC时，所述 BH网元包括远端射频单元 RRU成员、交换机及室 内基带装置， 所述方法还包括：
向 RRU成员发送所述组播组配置消息， 以使所述 RRU与所述室内基带装 置之间通过所述交换机实现所述组播数据传输。
9、如权利要求 7或 8所述的方法， 其特征在于， 所述获取组播组成员关系， 包括：
接收室内基带装置发送的协作集关系消息；
根据所述协作集关系消息确定所述各协作集与各组播组的对应关系； 根据所述各协作集与各组播组的对应关系确定所述组播组成员关系。
10、 如权利要求 9所述的方法， 其特征在于， 所述方法还包括：
向室内基带装置发送消息， 告知所述室内基带装置各协作集与各组播组的 对应关系， 以使得所述室内基带装置根据所述各协作集与各组播组的对应关系， 通过交换机向各组播组发送协作多点传输 CoMP数据。
11、 如权利要求 7或 8所述的方法， 其特征在于， 所述获取组播组成员关 系， 包括：
接收室内基带装置发送的消息， 所述消息指示了所述组播组成员关系。
12、 一种无线接入网络数据传输方法， 其特征在于， 所述方法包括： 获取各协作集与各组播组的对应关系；
根据所述各协作集与各组播组的对应关系， 通过交换机向各组播组发送协 作多点传输 CoMP数据。
13、 如权利要求 12所述的方法， 其特征在于， 所述获取各协作集与各组播 组的对应关系， 包括：
确定所述各协作集与各组播组的对应关系。
14、 如权利要求 13所述的方法， 其特征在于， 所述方法， 还包括： 根据所述各协作集与各组播组的对应关系确定所述组播组成员关系； 向组播控制装置发送消息， 指示所述组播组成员关系， 以使得所述组播组 控制装置向组播关系处理装置发送组播组配置消息， 所述组播组配置消息指示 了所述组播组成员关系。
15、 如权利要求 12所述的方法， 其特征在于， 所述获取各协作集与各组播 组的对应关系， 包括： 向组播控制装置发送协作集消息， 以使得所述组播控制装置根据所述协作 集关系消息确定所述各协作集与各组播组的对应关系， 根据所述对应关系确定 所述组播组成员关系， 向组播关系处理装置发送组播组配置消息， 所述组播组 配置消息指示了所述组播组成员关系；
接收所述组播控制装置发送的消息， 根据所述消息确定所述各协作集与各 组播组的对应关系。
16、 一种组播关系处理装置， 其特征在于， 包括：
接收模块， 用于接收组播控制装置发送的组播组配置消息， 所述组播组配 置消息指示了由各协作集与各组播组的对应关系确定的组播组成员关系；
数据处理模块， 用于根据所述组播组成员关系与所述各组播组的相关回程 网络 BH网元配置数据传输。
17、 如权利要求 16所述的组播关系处理装置， 其特征在于，
所述组播关系处理装置为具有远端射频单元 RRU功能的设备， 所述数据处 理模块还包括：
组播组确定模块， 用于根据所述组播组成员关系确定所述组播关系处理装 置所属的组播组；
发送模块， 用于向组播服务器发送因特网组管理协议 IGMP报文， 请求更 新其组播组隶属关系；
所述接收模块， 还用于接收室内基带装置根据所述各协作集与各组播组的 对应关系向其所属的组播组发送的协作多点传输 CoMP数据。
18、 如权利要求 16所述的组播关系处理装置， 其特征在于， 所述组播关系 处理装置为具有开放流控制器 OFC功能的服务器或独立的网络设备； 所述数据 处理模块还包括：
信息处理模块，用于根据所述组播组成员关系生成基于开放流 OF协议的控 制信息， 所述控制信息用于指示交换机修改流表， 具体为： 指示所述交换机接 收到组播数据时， 根据所述组播数据的目的地址对应的组播组， 对所述组播数 据进行转发和 /或将所述组播数据复制后修改所述目的地址为与所述目的地址对 应的组播组的 RRU成员的介质访问控制 MAC地址并发送给所述 RRU成员；或 者在所述组播控制装置向 RRU成员发送组播组配置消息后， 指示所述交换机接 收到组播数据时， 根据所述数据的目的地址对应的组播组， 对所述组播数据进 行转发；
信息发送模块， 用于向交换机发送所述控制信息。
19、 一种组播控制装置， 其特征在于， 包括：
成员关系获取模块， 用于获取由各协作集与各组播组的对应关系确定的组 播组成员关系；
发送模块， 用于向组播关系处理装置发送组播组配置消息， 所述组播组配 置消息指示了所述组播组成员关系。
20、 如权利要求 19所述的组播控制装置， 其特征在于，
所述发送模块， 还用于在组播关系处理装置为开放流控制器 OFC时向远端 射频单元 RRU成员发送所述组播组配置消息。
21、 如权利要求 19所述的组播控制装置， 其特征在于， 所述成员关系获取 模块包括：
接收模块， 用于接收室内基带装置发送的协作集关系消息；
组播组成员关系确定模块， 用于根据所述协作集关系消息确定所述各协作 集与各组播组的对应关系， 及根据所述对应关系确定所述组播组成员关系； 所述发送模块， 还用于向所述室内基带装置发送消息， 告知所述室内基带 装置各协作集与各组播组的对应关系。
22、 如权利要求 19所述的组播控制装置， 其特征在于， 所述成员关系获取 模块包括：
接收模块， 用于接收室内基带装置发送的消息， 所述消息指示了所述组播 组成员关系。
23、 如权利要求 19至 22任一项所述的组播控制装置， 其特征在于， 所述 组播控制装置为独立的网络设备或者设于室内基带装置或服务器上。
24、 一种室内基带装置， 其特征在于， 包括：
对应关系获取模块， 用于获取各协作集与各组播组的对应关系；
信息处理模块， 用于根据所述各协作集与各组播组的对应关系， 通过交换 机向各组播组发送协作多点传输 CoMP数据。
25、 如权利要求 24所述的室内基带装置， 其特征在于， 所述对应关系获取 模块包括：
组播组关系确定模块， 用于确定所述各协作集与各组播组的对应关系， 根 据所述对应关系确定组播组成员关系；
组播组成员关系发送模块， 用于向组播控制装置发送消息， 所述消息指示 了所述组播组成员关系。
26、 如权利要求 24所述的室内基带装置， 其特征在于， 所述对应关系获取 模块包括：
协作集关系发送模块， 用于向组播控制装置发送协作集消息， 所述协作集 关系消息指示了各协作集所对应的远端射频单元 RRU成员；
接收模块， 用于接收所述组播控制装置发送的消息， 所述消息指示了所述 各协作集与各组播组的对应关系。
27、 一种无线接入网络数据传输系统， 其特征在于， 包括： 组播控制装置、 组播关系处理装置和相关回程网络 BH网元；
所述组播控制装置， 用于向所述组播关系处理装置发送组播组配置消息， 所述组播组配置消息指示了由各协作集与各组播组的对应关系确定的组播组成 员关系；
所述组播关系处理装置， 用于接收所述组播控制装置发送的消息， 根据所 述消息与所述各组播组的相关 BH网元配置组播数据传输；
所述相关 BH网元， 用于与所述组播关系处理装置配置组播数据传输。
28、 如权利要求 27所述的系统， 其特征在于， 所述组播关系处理装置为具 有远端射频单元 RRU功能的设备， 所述相关 BH网元包括交换机、 室内基带装 置和组播服务器， 所述组播关系处理装置， 还用于根据所述组播组成员关系确定其所属的组 播组， 并向所述组播服务器发送特网组管理协议 IGMP报文， 请求更新其组播 组隶属关系； 以及用于接收所述交换机转发的协作多点传输 CoMP数据；
所述交换机， 用于侦听所述组播关系处理装置发送的 IGMP报文， 更新其 组播地址表； 还用于接收所述室内基带装置发送的所述 CoMP数据， 以及根据 所述组播地址表转发所述 COMP数据；
所述室内基带装置， 用于根据所述协作集与各组播组的对应关系， 将所述 COMP数据发送给所述交换机。
29、如权利要求 27所述的系统,其特征在于， 所述组播关系处理装置为具有 开放流 OF协议所规定的开放流控制器 OFC功能的设备， 所述相关 BH网元包 括交换机、 室内基带装置和 RRU成员；
所述组播关系处理装置， 用于根据所述组播组成员关系向交换机发送基于 OF协议的控制信息， 指示所述交换机修改流表；
所述交换机， 用于根据所述控制信息修改流表； 还用于在接收到所述室内 基带装置发送的 CoMP数据时，根据所述 CoMP数据的目的地址对应的组播组， 对所述 CoMP数据进行转发和 /或将所述 CoMP数据复制后修改所述目的地址为 与所述目的地址对应的组播组的 RRU成员的地址并发送给所述 RRU成员； 所述室内基带装置， 用于根据所述协作集与各组播组的对应关系， 将所述 COMP数据发送给所述交换机。
30、如权利要求 27所述的系统,其特征在于， 所述组播关系处理装置为含有 OF协议所规定的 OFC功能的设备，所述相关 BH网元包括交换机、 室内基带装 置和 RRU成员；
所述组播控制装置还用于向 RRU成员发送组播组配置消息，告知所述 RRU 成员所属的组播组；
所述组播关系处理装置， 用于根据所述组播组成员关系向交换机发送基于 OF协议的控制信息， 指示所述交换机修改流表；
所述交换机， 用于根据所述控制信息修改流表； 还用于在接收到所述室内 基带装置发送的 CoMP数据时，根据所述 CoMP数据的目的地址对应的组播组， 对所述 CoMP数据进行转发； 所述室内基带装置， 用于根据所述协作集与各组播组的对应关系， 将所述
COMP数据发送给所述交换机。
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