WO2012103714A1 - 广播组播业务数据传输方法及装置 - Google Patents

广播组播业务数据传输方法及装置 Download PDF

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Publication number
WO2012103714A1
WO2012103714A1 PCT/CN2011/076436 CN2011076436W WO2012103714A1 WO 2012103714 A1 WO2012103714 A1 WO 2012103714A1 CN 2011076436 W CN2011076436 W CN 2011076436W WO 2012103714 A1 WO2012103714 A1 WO 2012103714A1
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WIPO (PCT)
Prior art keywords
bypass
data
transmission
access network
link
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PCT/CN2011/076436
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English (en)
French (fr)
Inventor
曹文利
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201180000927.XA priority Critical patent/CN102308600B/zh
Priority to PCT/CN2011/076436 priority patent/WO2012103714A1/zh
Publication of WO2012103714A1 publication Critical patent/WO2012103714A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/40Connection management for selective distribution or broadcast
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1886Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with traffic restrictions for efficiency improvement, e.g. involving subnets or subdomains

Definitions

  • the present invention relates to the field of communications, and in particular, to a broadcast multicast service data transmission method and apparatus. Background technique
  • 3GPP defines Local IP Access and Selected IP Traffic Offload to move the transmission resources of the network.
  • HNB 3G Home NodeB, 3G (3rd-generation, 3rd generation mobile communication technology) home base station
  • L-GW Local-GateWay, local gateway
  • L-GGSN Local-Gateway GPRS Support Node, GPRS (General Packet Radio Service) support node
  • SIPTO Select IP traffic offload, and selects the IP (Internet Protocol) bypass
  • Embodiments of the present invention provide a broadcast multicast service data transmission method and apparatus, which can bypass broadcast transmission of broadcast multicast service data and save network resources.
  • a broadcast multicast service data transmission method includes:
  • the broadcast multicast service center BM-SC sends a session request message for bypassing data transmission, establishing a bypass a bypass link for transmitting data;
  • the BM-SC sends the bypass data to the terminal corresponding to the bypass data through the bypass link.
  • a broadcast multicast service center including:
  • a sending unit configured to send a session request message for bypassing transmission data, and establish a bypass link for bypassing transmission data
  • a data transmission unit configured to send the bypass data to the terminal corresponding to the bypass data by using the bypass link.
  • the broadcast multicast service data transmission method and apparatus when performing MBMS data transmission, send a session request message of bypass transmission data, establish a bypass link for bypass transmission data; and use a part of the MBMS data as Bypassing data, sending the bypass data to the terminal corresponding to the bypass data through the bypass link; implementing bypass transmission of MBMS data, avoiding MBMS data from a broadcast multicast service center to the CN and from the CN
  • the transmission to the wireless access network saves network resources.
  • FIG. 1 is a flowchart of a method for transmitting data of a broadcast multicast service according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic diagram of networking of bypass MBMS data according to Embodiment 2 of the present invention
  • FIG. 3 is a schematic diagram of networking of another bypass MBMS data in Embodiment 2 of the present invention.
  • FIG. 4 is a flowchart of a method for transmitting data of a broadcast multicast service according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic diagram of networking of bypass MBMS data according to Embodiment 3 of the present invention.
  • FIG. 6 is a flowchart of a method for transmitting data of a broadcast multicast service according to Embodiment 3 of the present invention
  • FIG. 7 is a schematic diagram of networking of bypass MBMS data according to Embodiment 4 of the present invention.
  • FIG. 8 is a flowchart of a method for transmitting data of a broadcast multicast service according to Embodiment 4 of the present invention
  • 9 is a schematic diagram of a networking for bypassing MBMS data according to Embodiment 5 of the present invention
  • FIG. 10 is a schematic diagram of another networking for bypassing MBMS data according to Embodiment 5 of the present invention
  • FIG. 12 is a schematic diagram of networking of a bypass M-S data in Embodiment 6 of the present invention.
  • FIG. 13 is a flowchart of a method for transmitting data of a broadcast multicast service according to Embodiment 6 of the present invention
  • FIG. 14 is a block diagram showing a composition of a BM-SC according to Embodiment 7 of the present invention
  • Figure 15 is a block diagram showing the composition of another BM-SC in Embodiment 7 of the present invention.
  • FIG. 16 is a block diagram showing the composition of another BM-SC in Embodiment 7 of the present invention.
  • FIG. 17 is a block diagram showing the composition of another BM-SC in Embodiment 7 of the present invention.
  • FIG. 18 is a block diagram showing the composition of another BM-SC in Embodiment 7 of the present invention.
  • Figure 19 is a block diagram showing the composition of another BM-SC in Embodiment 7 of the present invention. detailed description
  • the embodiment of the invention provides a method for transmitting data of a broadcast multicast service. As shown in FIG. 1, the method includes:
  • the BM-SC Broadcast-Multicast-Service Centre
  • the BM-SC may be a BM-SC located on the CN (Core Network) side; or may be an L-BM-SC located on the access network side (Local-Broadcast-Multicast - Service Centre)
  • the local broadcast multicast service center or the BM-SC proxy is not limited in this embodiment of the present invention, and is specifically determined according to different networking modes.
  • the BM-SC sends a session request message for bypassing transmission data, and the bypass link for establishing bypass transmission data is specifically: When the BM-SC located on the CN side is directly connected to the local gateway on the access network side, and the data content is stored in the BM-SC located on the CN side, the BM-SC sends a session request for bypassing transmission data.
  • the bypass link connecting the bypass transmission data is: the BM-SC located on the CN side sends the session request message of the bypass transmission data to the local gateway, and the BM-SC located on the CN side is established. And accessing the first bypass link of the terminal corresponding to the bypass data by using the local gateway on the access network side and the network element on the access network side. or
  • the BM-SC located on the CN side When the BM-SC located on the CN side is directly connected to the local gateway on the access network side, and the data content is moved down to the access network side, the BM-SC sends a session request message for bypassing the transmission data,
  • the bypass link of the path transmission data is: the BM-SC located on the CN side sends the session request message of the bypass transmission data to the local gateway, and establishes a session request message from the access network side.
  • the local gateway starts and reaches the second bypass link of the terminal corresponding to the bypass data via the network element on the access network side.
  • the BM-SC When the L-BM-SC is directly connected to the local gateway on the access network side, and the data content is stored in the L-BM-SC, the BM-SC sends a session request message for bypassing transmission data, and is established next to The bypass link of the path transmission data is: the L-BM-SC sends the session request message of the bypass transmission data to the local gateway, and establishes from the L-layer-SC, through the access network side The local gateway reaches the third bypass link of the terminal corresponding to the bypass data via the network element on the access network side.
  • the BM-SC proxy When the BM-SC proxy is directly connected to the local gateway on the access network side, and the data content is stored in the BM-SC proxy, the BM-SC sends a session request message for bypassing data transmission, and establishes a bypass transmission.
  • the bypass link of the data is: the BM-SC agent sends the session request message of the bypass transmission data to the local gateway, and establishes a local gateway from the BM-SC proxy through the access network side. And accessing the fourth bypass link of the terminal corresponding to the bypass data via the network element on the access network side.
  • the BM-SC located on the CN side When the BM-SC located on the CN side is directly connected to the T0F (traffic off load function) of the access network side, the BM-SC sends a session request message for bypassing transmission data.
  • the bypass link for establishing the bypass transmission data is: the BM-SC located at the CN side sends the session request message of the bypass transmission data to the CN network element, and the BM-SC located at the CN side is established.
  • the TOF reaches the fifth bypass link of the terminal corresponding to the bypass data via the network element on the access network side.
  • the local gateway is an L-GGSN when the network for transmitting the multicast service data is a 3G (3rd-genera ti on, third-generation mobile communication technology) network; and the network for transmitting the multicast service data is 3G.
  • the local gateway In the HNB (3G Home NodeB, 3G home base station) of the network, the local gateway is an L-GW; however, the embodiment of the present invention does not limit this, when the network for broadcasting the multicast service data is other than the above two.
  • it may be a network element having the same function as the L-GGSN or the L-GW.
  • the BM-SC sends the bypass data to the terminal corresponding to the bypass data through the bypass link.
  • a specific scheme of bypassing the bypass transmission data is established, and the BM-SC passes the bypass data through the step.
  • the terminal corresponding to the bypass data sent by the bypass link is specifically:
  • the BM-SC located at the CN side sends the session request message of the bypass transmission data to the local gateway, establishing a local gateway from the BM-SC located on the CN side, passing through the access network side, and When the network element on the access network side reaches the first bypass link of the terminal corresponding to the bypass data, the BM-SC sends the bypass data to the terminal corresponding to the bypass data through the bypass link.
  • the BM-SC located on the CN side sends the bypass data to the terminal corresponding to the bypass data through the first bypass link.
  • the BM-SC located at the CN side sends the session request message of the bypass transmission data to the local gateway, establishing a local gateway from the access network side, and accessing the network through the access network
  • the BM-SC sends the bypass data to the terminal corresponding to the bypass data by using the bypass link:
  • the CN side BM-SC sends the bypass data to the terminal corresponding to the bypass data through the second bypass link.
  • the L-BM-SC sends the session request message of the bypass transmission data to the local gateway, establishes from the L-BM-SC, passes through the local gateway on the access network side, and accesses
  • the network element on the network side reaches the third bypass link of the terminal corresponding to the bypass data
  • the BM-SC sends the bypass data to the terminal corresponding to the bypass data through the bypass link: L-BM-SC will bypass data
  • the third bypass link is sent to the terminal corresponding to the bypass data.
  • the BM-SC proxy sends, by the BM-SC proxy, a session request message of the bypass transmission data to the local gateway, establishing a local gateway from the BM-SC proxy, passing through the access network side, and accessing the network side
  • the BM-SC sends the bypass data to the terminal corresponding to the bypass data by using the bypass link:
  • the SC agent sends the bypass data to the terminal corresponding to the bypass data through the fourth bypass link.
  • the BM-SC located at the CN side sends the session request message of the bypass transmission data to the CN network element, establishes a BM-SC located at the CN side, passes the T0F, and accesses the network through the access network side.
  • the BM-SC sends the bypass data to the terminal corresponding to the bypass data through the bypass link: the CN side
  • the BM-SC sends the bypass data to the terminal corresponding to the bypass data through the fifth bypass link.
  • the BM-SC can determine which traffic bypasses according to the following information: APN, IP multicast address, flow identifier, UE location information, MBMS service area, MBMS downlink node list.
  • a session request message for bypassing transmission data is sent, a bypass link for bypassing data transmission is established; and a part of the MBMS data is used as bypass data, and the bypass data is passed.
  • the bypass link is sent to the terminal corresponding to the bypass data; the bypass transmission of the MBMS data is implemented, and the transmission of the MBMS data from the broadcast multicast service center to the CN and from the CN to the wireless access network is avoided, thereby saving Internet resources.
  • the embodiment of the present invention provides a broadcast multicast service data transmission method.
  • a local gateway is an L-GGSN, and a network for bypassing MBMS data is shown in FIG. 2, and a BM-SC is deployed on a CN network.
  • the L-GGSN is connected to the Gi and the Gmb interface, and is connected to the BM-SC in the CN.
  • the local gateway is the L-GW, and the networking for bypassing the MBMS data is as shown in FIG.
  • the BM-SC is deployed on the CN network.
  • the content of the MBMS is directly transmitted through the Gi interface of the L-GW.
  • the L-GW outbound Gmb interface is connected to the BM-SC.
  • the Gmb interface can be carried in the IPSec tunnel between the HNB and the SeGW.
  • the embodiment of the present invention specifically illustrates the method by taking a 3G network as an example. As shown in FIG. 4, the method includes:
  • the BM-SC sends a session start request message for bypassing transmission of MBMS data to the L-GGSN, to
  • the triggering establishment starts from the BM-SC, passes through the local gateway L-GGSN, and reaches the bypass data via the network element RNC (Radio Network Controller) and NodeB (base station) on the access network side.
  • the first bypass link of the corresponding terminal UE, User Equipment).
  • the BM-SC determines the bypass traffic, the BM-SC sends the session start request to the L-GGSN.
  • the L-GGSN receives the session start request message, and returns a session start response message to the BM-SC.
  • the L-GGSN After returning the session start response message to the BM-SC, the L-GGSN sends the session start request to the CN network element SGSN.
  • the SGSN After receiving the session start request sent by the L-GGSN, the SGSN sends the session start request to the network element RNC of the access side.
  • the RNC After receiving the session start request, the RNC returns a session start response message to the SGSN.
  • the RNC establishes, according to the session start request, a wireless network resource that transmits the bypass MBMS data.
  • the SGSN After the step 205, after receiving the session start response message, the SGSN sends the session start response message to the L-GGSN.
  • the BM-SC sends the bypass MBMS data that needs to be bypassed to the L-GGSN.
  • the BM-SC may determine which traffic bypasses according to the following information: APN, IP multicast address, flow identifier, UE location information, MBMS service area, and MBMS downlink node list.
  • the L-GGSN receives the bypass MBMS data, and sends the bypass MBMS data to the terminal corresponding to the bypass MBMS data by using the wireless network resource.
  • the BM-SC located on the CN side when the MBMS data transmission is performed, the BM-SC located on the CN side sends the session request message of the bypass transmission data to the local gateway, and the BM-SC located at the CN side is established.
  • the local gateway on the access network side reaches the first bypass link of the terminal corresponding to the bypass data via the network element on the access network side; and the part of the MBMS data is used as bypass data, and the bypass data is passed
  • the first bypass link is sent to the terminal corresponding to the bypass data; the bypass transmission of the MBMS data is implemented, and the transmission of the MBMS data from the broadcast multicast service center to the CN and from the CN to the wireless access network is avoided, saving Network resources.
  • the embodiment of the present invention provides a broadcast multicast service data transmission method.
  • a local gateway is an L-GGSN, and a network for bypassing MBMS data is shown in FIG. 5, and a BM-SC is deployed on a CN network.
  • the L-GGSN exits the Gi and GmbH interfaces and is connected to the BM-SC in the CN; the bypass is the traffic and the non-bypass traffic (the traffic of the CN) is sent through the L-GGSN.
  • the BM-SC sends a session start request message for bypassing transmission of MBMS data to the L-GGSN, so as to trigger establishment of the network element RNC from the BM-SC, through the local gateway L-GGSN, and via the access network side.
  • the NodeB arrives at the first bypass link of the terminal UE corresponding to the bypass data.
  • the BM-SC determines the bypass traffic, the BM-SC sends the session start request to the L-GGSN.
  • the L-GGSN receives the session start request message, and returns a session start response message to the BM-SC.
  • the L-GGSN After returning the session start response message to the BM-SC, the L-GGSN sends the session start request to the CN network element SGSN.
  • the SGSN After receiving the session start request sent by the L-GGSN, the SGSN sends the session start request to the network element RNC of the access side.
  • the RNC After receiving the session start request, the RNC returns a session start response to the SGSN. Should be the message.
  • the RNC establishes, according to the session start request, a wireless network resource that transmits the bypass MBMS data.
  • the SGSN After the step 305, after receiving the session start response message, the SGSN sends the session start response message to the L-GGSN.
  • BM-SC will require bypass bypassing the MBMS data transmission and non-MBMS data bypass the non-transmission transmission need to bypass the L-GGSN 0
  • the L-GGSN receives the bypass MBMS data and non-bypass MB data, and sends the bypass MBMS data and non-bypass MBMS data to the bypass MBMS by using the wireless network resource.
  • the terminal corresponding to the data.
  • the BM-SC located on the CN side when the MBMS data transmission is performed, the BM-SC located on the CN side sends the session request message of the bypass transmission data to the local gateway, and the BM-SC located at the CN side is established.
  • the local gateway on the access network side reaches the first bypass link of the terminal corresponding to the bypass data via the network element on the access network side; and the part of the MBMS data is used as bypass data, and the bypass data is passed
  • the first bypass link is sent to the terminal corresponding to the bypass data; the bypass transmission of the MBMS data is implemented, and the transmission of the MBMS data from the broadcast multicast service center to the CN and from the CN to the wireless access network is avoided, saving Network resources.
  • the local gateway when the local gateway bypasses the MBMS data and sends the wireless network resource established by the wireless network element to the terminal corresponding to the bypass MBMS data, the local gateway may also pass the non-bypass MBMS data through the wireless.
  • the wireless network resources established by the network element are sent to the terminal corresponding to the non-MBMS data, which avoids the transmission of the non-bypass MBMS data from the broadcast multicast service center to the CN and from the CN to the wireless access network, thereby saving network resources.
  • the embodiment of the present invention provides a method for transmitting data of a broadcast multicast service.
  • the bypass MBMS data to be transmitted may be located in the BM-SC deployed on the CN side, or the bypass MBMS data may be moved down to the access network side.
  • the BM-SC is still deployed on the CN side, bypassing MBMS data content down.
  • the L-GGSN out Gmb interface is connected to the BM-SC in the CN.
  • the broadcast multicast service data transmission method is as shown in FIG. 8 when the network mode is as shown in FIG.
  • the BM-SC sends a session start request message for bypassing transmission of MBMS data to the L-GGSN, so as to trigger establishment of the bypass data from the local gateway L-GGSN and the network element RNC and NodeB on the access network side. Corresponding second bypass link of the terminal UE.
  • the BM-SC determines the bypass traffic, the BM-SC sends the session start request to the L-GGSN.
  • the L-GGSN receives the session start request message, and returns a session start response message to the BM-SC.
  • the L-GGSN After returning the session start response message to the BM-SC, the L-GGSN sends the session start request to the CN network element SGSN.
  • the SGSN After receiving the session start request sent by the L-GGSN, the SGSN sends the session start request to the network element RNC of the access side.
  • the RNC After receiving the session start request, the RNC returns a session start response message to the SGSN.
  • the RNC establishes, according to the session start request, a wireless network resource that transmits the bypass MBMS data.
  • the SGSN After the step 405, after receiving the session start response message, the SGSN sends the session start response message to the L-GGSN.
  • the radio access network side sends the bypass MBMS data that needs to be bypassed to the L-GGSN through the Gi interface of the L-GGSN.
  • the L-GGSN receives the bypass MBMS data, and sends the bypass MBMS data to the terminal corresponding to the bypass MBMS data by using the wireless network resource.
  • the BM-SC located on the CN side sends the session request message of the bypass transmission data to the local gateway, and is established from the CN side.
  • the BM-SC passes through the local gateway on the access network side, and reaches the first bypass link of the terminal corresponding to the bypass data via the network element on the access network side; and uses a part of the MBMS data as the bypass data. Transmitting the bypass data to the terminal corresponding to the bypass data by using the first bypass link; implementing bypass transmission of MBMS data, avoiding MBMS data from a broadcast multicast service center to the CN and from the CN to the wireless
  • the transmission of the access network saves network resources.
  • the embodiment of the present invention provides a method for transmitting data of a broadcast multicast service.
  • the BM-SC can be deployed not only on the CN side but also the BM-SC in the access network, and The BM-SC or BM-SC proxy exists.
  • the networking mode of the specific G3 network can be as shown in Figure 9.
  • the L-BM-SC or BM-SC proxy is deployed on the access network side, and the L-GGSN is out.
  • the Gmb and Gi interfaces are connected to the L-BM-SC or the BM-SC proxy on the access network side.
  • the HNB networking mode on the 3G network can be deployed in the L-BM-SC or BM-SC proxy as shown in Figure 10.
  • the embodiment of the present invention specifically illustrates the method by using a 3G network and using L-BM-SC as an example. As shown in FIG. 11, the method includes:
  • the L-BM-SC sends a session start request message for bypassing transmission of MBMS data to the L-GGSN, so as to trigger establishment of the local gateway L-GGSN from the L-BM-SC, through the access network side, and The network element on the access network side reaches the third bypass link of the terminal corresponding to the bypass data.
  • the L-BM-SC sends the session start request to the L-GGSN.
  • the L-GGSN receives the session start request message, and returns a session start response message to the L-BM-SC.
  • the L-GGSN After returning the session start response message to the L-BM-SC, the L-GGSN sends the session start request to the CN network element SGSN.
  • the SGSN After receiving the session start request sent by the L-GGSN, the SGSN sends the session start request to the network element RNC of the access side. 505. After receiving the session start request, the RNC returns a session start response message to the SGSN.
  • the RNC establishes, according to the session start request, a wireless network resource that transmits the bypass MBMS data.
  • the SGSN After the step 505, after receiving the session start response message, the SGSN sends the session start response message to the L-GGSN.
  • the L-BM-SC sends the bypass MBMS data that needs to be bypassed to the L-GGSN.
  • the L-BM-SC may determine which traffic bypasses according to the following information: APN, IP multicast address, flow identifier, UE location information, MBMS service area, MBMS downlink node list.
  • the L-GGSN receives the bypass MBMS data, and sends the bypass MBMS data to the terminal corresponding to the bypass MBMS data by using the wireless network resource.
  • the specific description of the broadcast multicast service data transmission method in the embodiment of the present invention may be Referring to the corresponding description of the above steps 501 to 509, the difference is that the L-BM-SC is replaced by a BM-SC proxy, and the BM-SC proxy sends the session request message of the bypass transmission data to the local gateway.
  • the proxy sends the bypass data to the terminal corresponding to the bypass data through the fourth bypass link; therefore, when the BM-SC is deployed in the form of a layer-SC proxy, the broadcast multicast service data is deployed on the access network side.
  • a detailed description of the transmission method will not be described in detail in the embodiments of the present invention.
  • the broadcast multicast service data transmission method is performed in the network mode, the L-GGSN in steps 501 to 509 is replaced with the L-GW, and the RNC is replaced with the HNB GW 0. Therefore, the broadcast is performed in the networking mode as shown in FIG.
  • the multicast service data transmission method will not be described in detail in the embodiments of the present invention.
  • the L-BM-SC when the MBMS data transmission is performed, the L-BM-SC is sent to the local Sending, by the gateway, the session request message of the bypass transmission data, starting from the L-BM-SC, passing through the local gateway on the access network side, and reaching the terminal corresponding to the bypass data via the network element on the access network side a third bypass link; and a part of the MBMS data is used as bypass data, and the bypass data is sent to the terminal corresponding to the bypass data through the third bypass link; or by the BM-SC proxy Sending the session request message of the bypass transmission data to the local gateway, establishing a local gateway from the BM-SC proxy, passing through the access network side, and reaching the bypass data corresponding to the network element on the access network side a fourth bypass link of the terminal, sending the bypass data to the terminal corresponding to the bypass data through the fourth bypass link; implementing bypass transmission of MBMS data, avoiding MBMS data from the broadcast group
  • the embodiment of the present invention provides a broadcast multicast service data transmission method.
  • a networking for bypassing MBMS data is shown in FIG. 12, and the BM-SC deployment and the GW interface are reserved in the core network, RNC.
  • the HNB GW has a T0F function and is provided with a T0F function module, and the content of the MBMS is directly transmitted through the Gi interface of the T0F.
  • the broadcast multicast service data transmission method is specifically shown in FIG. 13, and includes:
  • the BM-SC sends a session start request message for bypassing the broadcast multicast service MBMS data to the CN network element GGSN, so as to trigger establishment of the BM-SC located at the CN side, through the T0F, and via the access network side.
  • the BM-SC sends the session start request to the GGSN.
  • the GGSN receives the session start request message, and returns a session start response message to the BM-SC.
  • the GGSN After returning the session start response message to the BM-SC, the GGSN sends the session start request to the SGSN.
  • the SGSN After receiving the session start request sent by the GGSN, the SGSN sends the session request to the SGSN.
  • the network element RNC or HNB GW of the ingress side sends the session start request.
  • the RNC or the HNB GW After receiving the session start request, the RNC or the HNB GW returns a session start response message to the SGSN.
  • the RNC or HNB GW establishes, according to the session start request, a wireless network resource that transmits the bypass MBMS data.
  • the SGSN After the step 605, after receiving the session start response message, the SGSN sends the session start response message to the GGSN.
  • the BM-SC sends the bypass MBMS data that needs to be bypassed to the T0F of the RNC or the T0F of the HNB GW through the Gi interface.
  • the BM-SC may determine which traffic bypasses according to the following information: APN, IP multicast address, flow identifier, UE location information, MBMS service area, and MBMS downlink node list.
  • the T0F of the RNC or the T0F of the HNB GWN receives the bypass MBMS data, and sends the bypass MBMS data to the terminal corresponding to the bypass MBMS data by using the radio network resource.
  • the BM-SC located on the CN side when the MBMS data transmission is performed, the BM-SC located on the CN side sends the session request message of the bypass transmission data to the CN network element, and the BM-SC located at the CN side is established.
  • the T0F is connected to the fifth bypass link of the terminal corresponding to the bypass data via the network element on the access network side, and the bypass MBMS data is sent to the bypass MBMS data through the fifth bypass link.
  • the terminal implements bypass transmission of MBMS data, avoids transmission of MBMS data from the broadcast multicast service center to the CN and from the CN to the radio access network, and saves network resources.
  • the embodiment of the present invention provides a broadcast multicast service center, where the broadcast multicast service center BM-SC can be a BM-SC located on the CN side of the core network, or a local broadcast multicast service center located on the access network side.
  • the L-BM-SC or the X-SC proxy is not limited in this embodiment of the present invention. In specific implementation, it is specifically determined according to the networking mode.
  • the BM-SC includes: a transmitting unit 71 and a data transmitting unit 72.
  • the sending unit 71 is configured to send a session request message for bypassing transmission data, and establish a bypass link for bypassing transmission data.
  • the data transmission unit 72 is configured to send the bypass data to the terminal corresponding to the bypass data by using the bypass link.
  • the transmitting unit 71 includes a first transmitting module 71 1 ; and the data transmitting unit 72 includes a first data transmitting module 721.
  • the first sending module 71 1 is configured to send a session request message of the bypass transmission data to the local gateway, and establish a local gateway from the BM-SC located on the CN side through the access network side. And accessing the first bypass link of the terminal corresponding to the bypass data via the network element on the access network side.
  • the first data transmission module 721 is configured to send the bypass data to the terminal corresponding to the bypass data by using the first bypass link.
  • the first data transmission module 721 is further configured to send non-bypass data to the terminal corresponding to the non-bypass data through the first bypass link.
  • the transmitting unit 71 includes a second transmitting module 71 2 ; the data transmitting unit 72 includes a second data transmitting module 722.
  • the second sending module 71 2 is configured to send a session request message of the bypass transmission data to the local gateway, establish a network element from the local gateway on the access network side, and access the network side The second bypass link of the terminal corresponding to the bypass data is reached.
  • the second data transmission module 722 is configured to send the bypass data to the terminal corresponding to the bypass data by using the second bypass link.
  • Transmitting unit 71 The third transmitting module 73 is included; the data transmitting unit 72 includes a third data transmitting unit 723.
  • the third sending module 71 3 is configured to send a session request message of the bypass transmission data to the local gateway, establish a local gateway from the L-BM-SC, and access the network through the access network side, and The network element on the access network side reaches the third bypass link of the terminal corresponding to the bypass data.
  • the third data transmission module 723 is configured to send the bypass data to the terminal corresponding to the bypass data by using the third bypass link.
  • the sending The unit 71 includes a fourth transmitting module 714; the data transmission unit 72 includes a fourth data transmission module
  • the fourth sending module 714 is configured to send a session request message of the bypass transmission data to the local gateway, establish a local gateway from the access network side through the LIS-SC proxy, and access The network element on the network side reaches the fourth bypass link of the terminal corresponding to the bypass data.
  • the fourth data transmission module 724 is configured to send the bypass data to the terminal corresponding to the bypass data through the fourth bypass link.
  • the sending unit 71 includes a fifth.
  • the fifth sending module 715 is configured to send a session request message of the bypass transmission data to the CN network element, establish a BM-SC located on the CN side, pass the T0F, and access the network through the access network side.
  • the element arrives at the fifth bypass link of the terminal corresponding to the bypass data.
  • the fifth data transmission module 725 is configured to send the bypass data to the terminal corresponding to the bypass data by using the bypass link.
  • the session for transmitting the bypass transmission data is requested.
  • the transmission of MBMS data avoids the transmission of MBMS data from the broadcast multicast service center to the CN and from the CN to the radio access network, thereby saving network resources.
  • the local gateway when the local gateway bypasses the MBMS data and sends the wireless network resource established by the network element on the access side to the terminal corresponding to the bypass MBMS data, the local gateway may also perform the non-bypass MBMS.
  • the data is transmitted to the terminal corresponding to the non-MBMS data by the wireless network resource established by the network element on the access side, which avoids the transmission of the non-bypass MBMS data from the broadcast multicast service center to the CN and from the CN to the wireless access network, thereby saving Internet resources.
  • the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. .
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer.
  • a hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

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Abstract

本发明实施例公开了一种广播组播业务数据传输方法、装置及系统,涉及通信领域,能够旁路传输广播组播业务数据,节省网络资源。本发明的方法包括:BM-SC发送旁路传输数据的会话请求消息,建立旁路传输数据的旁路链路;并将旁路数据通过所述旁路链路发送给所述旁路数据对应的终端。本发明实施例主要用于广播组播业务数据传输的过程中。

Description

广播组播业务数据传输方法及装置 技术领域
本发明涉及通信领域, 尤其涉及一种广播组播业务数据传输方法及装置。 背景技术
随着智能手机和移动数据业务的发展, 人们不再满足单纯的短信和语音 业务, 移动电视业务应运而生。 在各种应用中, 移动视频具有较高的增长率, 这样移动视频要求越来越大的带宽, 对网络提出了很大的挑战。
为了节省网络资源, 3GPP 定义了 Local IP Access and Selected IP Traffic Offload, 来移动网络的传输资源。 对于 HNB ( 3G Home NodeB, 3G ( 3rd-generation, 第三代移动通信技术) 家庭基站), HNB 集成 L-GW (Local-GateWay, 本地网关), 来旁路低价值的互联网络数据, 并可访问本 地网络, 来节省传输网和核心网的资源。对于 3G宏网络, RNC (Radio Network Controller,无线网络控制器)与 L-GGSN( Local-Gateway GPRS Support Node, 本地网关 GPRS (General Packet Radio Service, 通用分组无线月良务技术) 支持节点)联合部署, 通过 L-GGSN 来旁路 SIPTO ( Selected IP traffic offload, 选择 IP ( Internet Protocol, 网络之间互连的协议)流量的旁路) 流量, 来节省核心网的资源。
在实现节省网络资源时, 目前通过对单播业务数据进行旁路传输实现该 节省网络资源, 但对应广播组播业务数据, 目前并没有完整可行进行数据旁 路的技术方案, 保证在节省网资源的同时实现组播广播业务数据的正常传输。 发明内容
本发明的实施例提供一种广播组播业务数据传输方法及装置, 能够旁路 传输广播组播业务数据, 节省网络资源。
为达到上述目的, 本发明的实施例釆用如下技术方案:
一种广播组播业务数据传输方法, 包括:
广播组播业务中心 BM-SC发送旁路传输数据的会话请求消息, 建立旁路 传输数据的旁路链路;
所述 BM-SC将旁路数据通过所述旁路链路发送给所述旁路数据对应的终 端。
一种广播组播业务中心, 包括:
发送单元, 用于发送旁路传输数据的会话请求消息, 建立旁路传输数据 的旁路链路;
数据传输单元, 用于将旁路数据通过所述旁路链路发送给所述旁路数据 对应的终端。
本发明实施例提供的广播组播业务数据传输方法及装置, 在进行 MBMS数 据传输时, 发送旁路传输数据的会话请求消息, 建立旁路传输数据的旁路链 路; 并且将一部分 MBMS数据作为旁路数据, 将该旁路数据通过所述旁路链路 发送给所述旁路数据对应的终端; 实现了旁路传输 MBMS数据, 避免了 MBMS 数据从广播组播业务中心到 CN以及从 CN到无线接入网的传输, 节省了网络 资源。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作简单地介绍, 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 1中广播组播业务数据传输方法的流程图; 图 2为本发明实施例 2中一种旁路 MBMS数据的组网示意图;
图 3为本发明实施例 2中另一种旁路 MBMS数据的组网示意图;
图 4为本发明实施例 2中广播组播业务数据传输方法的流程图; 图 5为本发明实施例 3中一种旁路 MBMS数据的组网示意图;
图 6为本发明实施例 3中广播组播业务数据传输方法的流程图; 图 7为本发明实施例 4中一种旁路 MBMS数据的组网示意图;
图 8为本发明实施例 4中广播组播业务数据传输方法的流程图; 图 9为本发明实施例 5中一种旁路 MBMS数据的组网示意图; 图 10为本发明实施例 5中另一种旁路 MBMS数据的组网示意图; 图 11为本发明实施例 5中广播组播业务数据传输方法的流程图; 图 12为本发明实施例 6中旁路 M謝 S数据的组网示意图;
图 13为本发明实施例 6中广播组播业务数据传输方法的流程图; 图 14为本发明实施例 7中一种 BM-SC的组成框图;
图 15为本发明实施例 7中另一种 BM-SC的组成框图;
图 16为本发明实施例 7中另一种 BM-SC的组成框图;
图 17为本发明实施例 7中另一种 BM-SC的组成框图;
图 18为本发明实施例 7中另一种 BM-SC的组成框图;
图 19为本发明实施例 7中另一种 BM-SC的组成框图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而 不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作 出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
实施例 1
本发明实施例提供一种广播组播业务数据传输方法, 如图 1 所示, 该方 法包括:
101、 BM-SC ( Broadcast-Multicast - Service Centre, 广播组播业务 中心)发送旁路传输数据的会话请求消息, 建立旁路传输数据的旁路链路。
其中, 所述 BM-SC为可以为位于 CN( Core Network,核心网 )侧的 BM-SC; 也可以为位于所述接入网侧的 L-BM-SC ( Local- Broadcast-Multicast - Service Centre, 本地广播组播业务中心)或 BM-SC代理, 本发明实施例对 此不进行限制, 根据不同的组网方式具体确定。 所述 BM-SC发送旁路传输数 据的会话请求消息, 建立旁路传输数据的旁路链路为具体为: 当所述位于 CN侧的 BM-SC与接入网侧的本地网关直接相连, 并且数据内 容存储于所述位于 CN侧的 BM-SC时, 所述 BM-SC发送旁路传输数据的会话请 求消息, 建立旁路传输数据的旁路链路为: 所述位于 CN侧的 BM-SC向所述本 地网关发送所述旁路传输数据的会话请求消息, 建立从位于 CN侧的 BM-SC起, 通过所述接入网侧的本地网关, 并经由接入网侧的网元到达旁路数据对应的 终端的第一旁路链路。 或者
当所述位于 CN侧的 BM-SC与接入网侧的本地网关直接相连, 并且数据内 容下移到接入网侧时, 所述 BM-SC发送旁路传输数据的会话请求消息, 建立 旁路传输数据的旁路链路为: 所述位于 CN侧的 BM-SC所述 BM-SC向所述本地 网关发送所述旁路传输数据的会话请求消息, 建立从所述接入网侧的本地网 关起, 并经由接入网侧的网元到达旁路数据对应的终端的第二旁路链路。 或 者
当所述 L-BM-SC 与接入网侧的本地网关直接相连, 并且数据内容存储于 所述 L-BM-SC时, 所述 BM-SC发送旁路传输数据的会话请求消息, 建立旁路 传输数据的旁路链路为: 所述 L-BM-SC 向所述本地网关发送所述旁路传输数 据的会话请求消息, 建立从 L-層 -SC起, 通过所述接入网侧的本地网关, 并 经由接入网侧的网元到达旁路数据对应的终端的第三旁路链路。 或者
当所述 BM-SC代理与接入网侧的本地网关直接相连, 并且数据内容存储 于所述 BM-SC代理时, 所述 BM-SC发送旁路传输数据的会话请求消息, 建立 旁路传输数据的旁路链路为: 所述 BM-SC代理向所述本地网关发送所述旁路 传输数据的会话请求消息, 建立从 BM-SC代理起, 通过所述接入网侧的本地 网关, 并经由接入网侧的网元到达旁路数据对应的终端的第四旁路链路。 或 者
当所述位于 CN侧的 BM-SC与接入网侧的 T0F( Traff i c Off load Func t ion , 流量旁路功能模块)直接相连时, 所述 BM-SC发送旁路传输数据的会话请求 消息, 建立旁路传输数据的旁路链路为: 所述位于 CN侧的 BM-SC向 CN网元 发送所述旁路传输数据的会话请求消息, 建立从位于 CN侧的 BM-SC起, 通过 所述 TOF , 并经由接入网侧的网元到达旁路数据对应的终端的第五旁路链路。 其中, 当广播组播业务数据传输的网络为 3G ( 3rd-genera t i on , 第三代 移动通信技术) 网络时, 所述本地网关为 L-GGSN; 当广播组播业务数据传输 的网络为 3G网络的 HNB ( 3G Home NodeB , 3G家庭基站) 时, 所述本地网 关为 L-GW; 但本发明实施例对此不进行限制, 当广播组播业务数据传输的网 络为除上述两种以外的网络时, 其可以为具有 L-GGSN或 L-GW相同功能的网 元。
1 02、 所述 BM-SC将旁路数据通过所述旁路链路发送给所述旁路数据对应 的终端。
针对于步骤 1 01所述 BM-SC发送旁路传输数据的会话请求消息, 建立旁 路传输数据的旁路链路的具体方案, 该步骤 1 02所述 BM-SC将旁路数据通过 所述旁路链路发送给所述旁路数据对应的终端具体为:
当所述位于 CN侧的 BM-SC向所述本地网关发送所述旁路传输数据的会话 请求消息, 建立从位于 CN侧的 BM-SC起, 通过所述接入网侧的本地网关, 并 经由接入网侧的网元到达旁路数据对应的终端的第一旁路链路时,所述 BM-SC 将旁路数据通过所述旁路链路发送给所述旁路数据对应的终端为: 所述位于 CN侧的 BM-SC将旁路数据通过所述第一旁路链路发送给所述旁路数据对应的 终端。 或者
当所述位于 CN侧的 BM-SC所述 BM-SC向所述本地网关发送所述旁路传输 数据的会话请求消息, 建立从所述接入网侧的本地网关起, 并经由接入网侧 的网元到达旁路数据对应的终端的第二旁路链路时, 所述 BM-SC将旁路数据 通过所述旁路链路发送给所述旁路数据对应的终端为: 所述位于 CN侧 BM-SC 将旁路数据通过所述第二旁路链路发送给所述旁路数据对应的终端。 或者 当所述 L-BM-SC向所述本地网关发送所述旁路传输数据的会话请求消息, 建立从 L-BM-SC起, 通过所述接入网侧的本地网关, 并经由接入网侧的网元 到达旁路数据对应的终端的第三旁路链路时, 所述 BM-SC将旁路数据通过所 述旁路链路发送给所述旁路数据对应的终端为: 所述 L-BM-SC将旁路数据通 过所述第三旁路链路发送给所述旁路数据对应的终端。 或者
当所述 BM-SC代理向所述本地网关发送所述旁路传输数据的会话请求消 息, 建立从 BM-SC代理起, 通过所述接入网侧的本地网关, 并经由接入网侧 的网元到达旁路数据对应的终端的第四旁路链路时, 所述 BM-SC将旁路数据 通过所述旁路链路发送给所述旁路数据对应的终端为: 所述 BM-SC代理将旁 路数据通过所述第四旁路链路发送给所述旁路数据对应的终端。 或者
当所述位于 CN侧的 BM-SC向 CN网元发送所述旁路传输数据的会话请求 消息, 建立从位于 CN侧的 BM-SC起, 通过所述 T0F , 并经由接入网侧的网元 到达旁路数据对应的终端的第五旁路链路时, 所述 BM-SC将旁路数据通过所 述旁路链路发送给所述旁路数据对应的终端为: 所述位于 CN侧的 BM-SC将旁 路数据通过所述第五旁路链路发送给所述旁路数据对应的终端。
另外, 所述 BM-SC可以根据下面信息来决定哪些流量旁路: APN、 IP组播 地址、 流标识、 UE位置信息、 MBMS业务区、 MBMS下行节点列表。
本发明实施例中, 在进行 MBMS数据传输时, 发送旁路传输数据的会话请 求消息, 建立旁路传输数据的旁路链路; 并且将一部分 MBMS数据作为旁路数 据, 将该旁路数据通过所述旁路链路发送给所述旁路数据对应的终端; 实现 了旁路传输 MBMS数据,避免了 MBMS数据从广播组播业务中心到 CN以及从 CN 到无线接入网的传输, 节省了网络资源。
实施例 2
本发明实施例提供一种广播组播业务数据传输方法, 在 3G网络中, 本地 网关为 L-GGSN, —种进行旁路 MBMS数据的组网如图 2所示, BM-SC部署在 CN 网, L-GGSN出 Gi和 Gmb接口, 并且连接到 CN中的 BM-SC; 在 3G网络 的 HNB 中, 本地网关为 L-GW, —种进行旁路 MBMS数据的组网如图 3所示, BM-SC部 署在 CN网 , MBMS的内容直接通过 L-GW的 Gi接口进行传输, L-GW出 Gmb接口 和 BM-SC相连接, Gmb接口可承载在 HNB和 SeGW之间的 IPSec隧道中。 本发 明实施例以 3G网络为例具体阐述该方法, 如图 4所示, 该方法包括:
201、 BM-SC向 L-GGSN发送旁路传输 MBMS数据的会话开始请求消息, 以 便触发建立从位于 BM-SC起, 通过所述本地网关 L-GGSN, 并经由接入网侧的 网元 RNC (Radio Network Contro l ler, 无线网络控制器)、 NodeB (基站)到达 旁路数据对应的终端(UE , User Equipment)的第一旁路链路。
其中, 在开始传输 MBMS数据之前, 如果 BM-SC决定旁路流量, 则 BM-SC 向 L-GGSN发送该会话开始请求。
202、 L-GGSN接收所述会话开始请求消息, 向所述 BM-SC返回会话开始响 应消息。
203、 L-GGSN在向所述 BM-SC返回会话开始响应消息后, 向所述 CN网元 SGSN发送所述会话开始请求。
204、 所述 SGSN接收到所述 L-GGSN发送的所述会话开始请求后, 向所述 接入侧的网元 RNC发送所述会话开始请求。
205、 所述 RNC接收所述会话开始请求后, 向所述 SGSN返回会话开始响 应消息。
206、 所述 RNC根据所述会话开始请求建立传输所述旁路 MBMS数据的无 线网络资源。
207、 在步骤 205后, 所述 SGSN接收到所述会话开始响应消息之后, 将 所述会话开始响应消息发送给所述 L-GGSN。
208、 BM-SC将需要旁路传输的旁路 MBMS数据发送给所述 L-GGSN。
其中, 所述 BM-SC可以根据下面信息来决定哪些流量旁路: APN、 IP组播 地址、 流标识、 UE位置信息、 MBMS业务区、 MBMS下行节点列表。
209、 所述 L-GGSN接收所述旁路 MBMS数据, 并通过所述无线网络资源将 所述旁路 MBMS数据发送给所述旁路 MBMS数据对应的终端。
需要说明的是, 在如图 3 所示的组网模式下进行广播组播业务数据传输 方法的具体描述, 可以参考步骤 201至 209的相应描述, 不同的是, 在如图 3 所示的组网模式下进行广播组播业务数据传输方法时, 将步骤 201至 209 中 的 L-GGSN替换为 L-GW, 将 RNC替换为 HNB GW0 所以在如图 3所示的组网模 式下进行广播组播业务数据传输方法, 本发明实施例将不再赘述。 本发明实施例中, 在进行 MBMS数据传输时, 由位于 CN侧的 BM-SC向所 述本地网关发送所述旁路传输数据的会话请求消息, 建立从位于 CN 侧的 BM-SC起, 通过所述接入网侧的本地网关, 并经由接入网侧的网元到达旁路数 据对应的终端的第一旁路链路; 并且将一部分 MBMS数据作为旁路数据, 将该 旁路数据通过该第一旁路链路发送给所述旁路数据对应的终端; 实现了旁路 传输 MBMS数据, 避免了 MBMS数据从广播组播业务中心到 CN以及从 CN到无 线接入网的传输, 节省了网络资源。
实施例 3
本发明实施例提供一种广播组播业务数据传输方法, 在 3G网络中, 本地 网关为 L-GGSN, —种进行旁路 MBMS数据的组网如图 5所示, BM-SC部署在 CN 网, L-GGSN出 Gi和 Gmb接口, 并且连接到 CN中的 BM-SC; 旁路是流量和非 旁路的流量 ( CN的流量)都通过 L-GGSN发送。 本发明实施例的广播组播业务 数据传输方法, 如图 6所示, 该方法包括:
301、 BM-SC向 L-GGSN发送旁路传输 MBMS数据的会话开始请求消息, 以 便触发建立从位于 BM-SC起, 通过所述本地网关 L-GGSN, 并经由接入网侧的 网元 RNC、 NodeB到达旁路数据对应的终端 UE的第一旁路链路。
其中, 在开始传输 MBMS数据之前, 如果 BM-SC决定旁路流量, 则 BM-SC 向 L-GGSN发送该会话开始请求。
302、 L-GGSN接收所述会话开始请求消息, 向所述 BM-SC返回会话开始响 应消息。
303、 L-GGSN在向所述 BM-SC返回会话开始响应消息后, 向所述 CN网元 SGSN发送所述会话开始请求。
304、 所述 SGSN接收到所述 L-GGSN发送的所述会话开始请求后, 向所述 接入侧的网元 RNC发送所述会话开始请求。
305、 所述 RNC接收所述会话开始请求后, 向所述 SGSN返回会话开始响 应消息。
306、 所述 RNC根据所述会话开始请求建立传输所述旁路 MBMS数据的无 线网络资源。
307、 在步骤 305后, 所述 SGSN接收到所述会话开始响应消息之后, 将 所述会话开始响应消息发送给所述 L-GGSN。
308、 BM-SC将需要旁路传输的旁路 MBMS数据和非需要旁路传输的非旁路 MBMS数据发送给所述 L-GGSN0
309、 所述 L-GGSN接收所述旁路 MBMS数据和非旁路 M爾 S数据, 并通过 所述无线网络资源将所述旁路 MBMS数据和非旁路 MBMS数据发送给所述旁路 MBMS数据对应的终端。
本发明实施例中, 在进行 MBMS数据传输时, 由位于 CN侧的 BM-SC向所 述本地网关发送所述旁路传输数据的会话请求消息, 建立从位于 CN 侧的 BM-SC起, 通过所述接入网侧的本地网关, 并经由接入网侧的网元到达旁路数 据对应的终端的第一旁路链路; 并且将一部分 MBMS数据作为旁路数据, 将该 旁路数据通过该第一旁路链路发送给所述旁路数据对应的终端; 实现了旁路 传输 MBMS数据, 避免了 MBMS数据从广播组播业务中心到 CN以及从 CN到无 线接入网的传输, 节省了网络资源。
并且, 本发明实施例中, 在本地网关将旁路 MBMS数据, 通过无线网元建 立的无线网络资源发送给旁路 MBMS数据对应的终端时, 还可以由本地网关将 非旁路 MBMS数据通过无线网元建立的无线网络资源发送给非 MBMS数据对应 的终端, 避免了非旁路 MBMS数据从广播组播业务中心到 CN以及从 CN到无线 接入网的传输, 节省了网络资源。
实施例 4
本发明实施例提供一种广播组播业务数据传输方法, 在需要传输的旁路 MBMS数据可以位于部署于 CN侧的 BM-SC中, 也可以将该旁路 MBMS数据下移 至接入网侧, 如图 7所示, BM-SC还是部署在 CN侧, 旁路 MBMS数据内容下移 至接入网侧并直接通过 L-GGSN的 G i接口进行传输; L-GGSN出 Gmb接口连接 到 CN中的 BM-SC。 当如图 7所示的组网模式时, 所述广播组播业务数据传输 方法如图 8所示, 包括:
401、 BM-SC向 L-GGSN发送旁路传输 MBMS数据的会话开始请求消息, 以 便触发建立从所述本地网关 L-GGSN起, 并经由接入网侧的网元 RNC、 NodeB 到达旁路数据对应的终端 UE的第二旁路链路。
其中, 在开始传输 MBMS数据之前, 如果 BM-SC决定旁路流量, 则 BM-SC 向 L-GGSN发送该会话开始请求。
402、 L-GGSN接收所述会话开始请求消息, 向所述 BM-SC返回会话开始响 应消息。
403、 L-GGSN在向所述 BM-SC返回会话开始响应消息后, 向所述 CN网元 SGSN发送所述会话开始请求。
404、 所述 SGSN接收到所述 L-GGSN发送的所述会话开始请求后, 向所述 接入侧的网元 RNC发送所述会话开始请求。
405、 所述 RNC接收所述会话开始请求后, 向所述 SGSN返回会话开始响 应消息。
406、 所述 RNC根据所述会话开始请求建立传输所述旁路 MBMS数据的无 线网络资源。
407、 在步骤 405后, 所述 SGSN接收到所述会话开始响应消息之后, 将 所述会话开始响应消息发送给所述 L-GGSN。
408、无线接入网侧通过 L-GGSN的 Gi接口,将需要旁路传输的旁路 MBMS 数据发送给所述 L-GGSN。
409、 所述 L-GGSN接收所述旁路 MBMS数据, 并通过所述无线网络资源将 所述旁路 MBMS数据发送给所述旁路 MBMS数据对应的终端
本发明实施例中, 在进行 MBMS数据传输时, 由位于 CN侧的 BM-SC向所 述本地网关发送所述旁路传输数据的会话请求消息, 建立从位于 CN 侧的 BM-SC起, 通过所述接入网侧的本地网关, 并经由接入网侧的网元到达旁路数 据对应的终端的第一旁路链路; 并且将一部分 MBMS数据作为旁路数据, 将该 旁路数据通过所述第一旁路链路发送给所述旁路数据对应的终端; 实现了旁 路传输 MBMS数据, 避免了 MBMS数据从广播组播业务中心到 CN以及从 CN到 无线接入网的传输, 节省了网络资源。
实施例 5
本发明实施例提供一种广播组播业务数据传输方法, 在传输旁路 MBMS数 据时, BM-SC不仅可以部署在 CN侧, 还可以将 BM-SC部署在接入网则, 并以 L-BM-SC或者 BM-SC代理的形式存在; 具体的 G3网络的组网方式可以为如图 9所示, 将 L-BM-SC或者 BM-SC代理部署在接入网侧, L-GGSN出 Gmb和 Gi接 口连接到接入网侧的 L-BM-SC或者 BM-SC代理; 在 3G网络的 HNB组网方式可 以如图 10所示, 将 L-BM-SC或者 BM-SC代理部署在接入网侧, MBMS的内容直 接通过 L-GW的 Gi接口进行传输; L-GGSN出 Gmb接口连接到无线接入网侧的 L-BM-SC或者 BM-SC代理。 本发明实施例以 3G网络并且以 L-BM-SC为例具体 阐述该方法, 如图 11所示, 该方法包括:
501、 L-BM-SC向 L-GGSN发送旁路传输 MBMS数据的会话开始请求消息, 以便触发建立从 L-BM-SC起, 通过所述接入网侧的本地网关 L-GGSN, 并经由 接入网侧的网元到达旁路数据对应的终端的第三旁路链路。
其中,在开始传输 MBMS数据之前,如果 L-層 -SC决定旁路流量,则 L-BM-SC 向 L-GGSN发送该会话开始请求。
502、 L-GGSN接收所述会话开始请求消息, 向所述 L-BM-SC返回会话开始 响应消息。
503、 L-GGSN在向所述 L-BM-SC返回会话开始响应消息后, 向所述 CN网 元 SGSN发送所述会话开始请求。
504、 所述 SGSN接收到所述 L-GGSN发送的所述会话开始请求后, 向所述 接入侧的网元 RNC发送所述会话开始请求。 505、 所述 RNC接收所述会话开始请求后, 向所述 SGSN返回会话开始响 应消息。
506、 所述 RNC根据所述会话开始请求建立传输所述旁路 MBMS数据的无 线网络资源。
507、 在步骤 505后, 所述 SGSN接收到所述会话开始响应消息之后, 将 所述会话开始响应消息发送给所述 L-GGSN。
508、 L-BM-SC将需要旁路传输的旁路 MBMS数据发送给所述 L-GGSN。 其中, 所述 L-BM-SC可以根据下面信息来决定哪些流量旁路: APN、 IP组 播地址、 流标识、 UE位置信息、 MBMS业务区、 MBMS下行节点列表。
509、 所述 L-GGSN接收所述旁路 MBMS数据, 并通过所述无线网络资源将 所述旁路 MBMS数据发送给所述旁路 MBMS数据对应的终端。
需要说明的是, 在传输该旁路 MBMS数据时, 当 BM-SC以 BM-SC代理的形 式被部署在接入网侧时, 本发明实施例广播组播业务数据传输方法的具体描 述, 可以参考上述步骤 501至 509的相应描述, 不同的是, 将 L-BM-SC替换 为 BM-SC代理, 由所述 BM-SC代理向所述本地网关发送所述旁路传输数据的 会话请求消息, 建立从 BM-SC代理起, 通过所述接入网侧的本地网关, 并经 由接入网侧的网元到达旁路数据对应的终端的第四旁路链路, 并所述 BM-SC 代理将旁路数据通过所述第四旁路链路发送给所述旁路数据对应的终端; 所 以当 BM-SC 以 層 -SC代理的形式被部署在接入网侧的广播组播业务数据传输 方法的具体描述, 本发明实施例将不再赘述。
需要说明的是, 在如图 10所示的组网模式下进行广播组播业务数据传输 方法的具体描述, 可以参考步骤 501至 509的相应描述, 不同的是, 在如图 3 所示的组网模式下进行广播组播业务数据传输方法时, 将步骤 501至 509 中 的 L-GGSN替换为 L-GW, 将 RNC替换为 HNB GW0 所以在如图 10所示的组网模 式下进行广播组播业务数据传输方法, 本发明实施例将不再赘述。
本发明实施例中, 在进行 MBMS数据传输时, 由所述 L-BM-SC向所述本地 网关发送所述旁路传输数据的会话请求消息, 建立从 L-BM-SC 起, 通过所述 接入网侧的本地网关, 并经由接入网侧的网元到达旁路数据对应的终端的第 三旁路链路; 并且将一部分 MBMS数据作为旁路数据, 将该旁路数据通过所述 第三旁路链路发送给所述旁路数据对应的终端; 或者由所述 BM-SC代理向所 述本地网关发送所述旁路传输数据的会话请求消息, 建立从 BM-SC代理起, 通过所述接入网侧的本地网关, 并经由接入网侧的网元到达旁路数据对应的 终端的第四旁路链路, 将该旁路数据通过所述第四旁路链路发送给所述旁路 数据对应的终端; 实现了旁路传输 MBMS数据, 避免了 MBMS数据从广播组播 业务中心到 CN以及从 CN到无线接入网的传输, 节省了网络资源。
实施例 6
本发明实施例提供一种广播组播业务数据传输方法, 在 3G网络中, 一种 进行旁路 MBMS数据的组网如图 12所示, BM-SC的部署和 Gmb接口保留在核心 网, RNC和 HNB GW具有 T0F功能, 并设置有 T0F功能模块, MBMS的内容直接 通过 T0F的 Gi接口进行传输。 该广播组播业务数据传输方法具体如图 13所 示, 包括:
601、 BM-SC向 CN网元 GGSN发送旁路传输广播组播业务 MBMS数据的会话 开始请求消息, 以便触发建立从位于 CN侧的 BM-SC起, 通过所述 T0F, 并经 由接入网侧的网元 RNC及 NodeB或 HNB GW及 HNB、 到达旁路数据对应的终端 的第五旁路链路。
其中, 在开始传输 MBMS数据之前, 如果 BM-SC决定旁路流量, 则 BM-SC 向 GGSN发送该会话开始请求。
602、 GGSN接收所述会话开始请求消息, 向所述 BM-SC返回会话开始响应 消息。
603、 GGSN在向所述 BM-SC返回会话开始响应消息后, 向所述 SGSN发送 所述会话开始请求。
604、 所述 SGSN接收到所述 GGSN发送的所述会话开始请求后, 向所述接 入侧的网元 RNC或 HNB GW发送所述会话开始请求。
605、 所述 RNC或 HNB GW接收所述会话开始请求后, 向所述 SGSN返回会 话开始响应消息。
606、 所述 RNC或 HNB GW根据所述会话开始请求建立传输所述旁路 MBMS 数据的无线网络资源。
607、 在步骤 605后, 所述 SGSN接收到所述会话开始响应消息之后, 将 所述会话开始响应消息发送给所述 GGSN。
608、 BM-SC将需要旁路传输的旁路 MBMS数据通过 Gi接口发送给所述 RNC 的 T0F或 HNB GW的 T0F。
其中, 所述 BM-SC可以根据下面信息来决定哪些流量旁路: APN、 IP组播 地址、 流标识、 UE位置信息、 MBMS业务区、 MBMS下行节点列表。
609、 所述 RNC的 T0F或 HNB GWN的 T0F接收所述旁路 MBMS数据, 并通 过所述无线网络资源将所述旁路 MBMS数据发送给所述旁路 MBMS数据对应的 终端。
本发明实施例中, 在进行 MBMS数据传输时, 由位于 CN侧的 BM-SC向 CN 网元发送所述旁路传输数据的会话请求消息, 建立从位于 CN侧的 BM-SC起, 通过所述 T0F,并经由接入网侧的网元到达旁路数据对应的终端的第五旁路链 路, 将旁路 MBMS数据通过所述第五旁路链路发送给该旁路 MBMS数据对应的 终端; 实现旁路传输 MBMS数据, 避免了 MBMS数据从广播组播业务中心到 CN 以及从 CN到无线接入网的传输, 节省了网络资源。
实施例 7
本发明实施例提供一种广播组播业务中心, 该广播组播业务中心 BM-SC 可以为位于核心网 CN侧的 BM-SC; 或者为位于所述接入网侧的本地广播组播 业务中心 L-BM-SC或謝 -SC代理, 本发明实施例对此不进行限制, 在具体实 施时,根据组网模式具体确定。如图 14所示,所述 BM-SC包括: 发送单元 71、 数据传输单元 72。 发送单元 71 , 用于发送旁路传输数据的会话请求消息, 建立旁路传输数 据的旁路链路。
数据传输单元 72 , 用于将旁路数据通过所述旁路链路发送给所述旁路数 据对应的终端。
进一步可选的, 当所述 BM-SC为位于 CN侧的 BM-SC , 并与接入网侧的本 地网关直接相连, 并且数据内容存储于所述位于 CN侧的 BM-SC时, 如图 15 所示, 所述发送单元 71包括第一发送模块 71 1 ; 所述数据传输单元 72包括第 一数据传输模块 721。
所述第一发送模块 71 1 ,用于向所述本地网关发送所述旁路传输数据的会 话请求消息, 建立从位于 CN侧的 BM-SC起, 通过所述接入网侧的本地网关, 并经由接入网侧的网元到达旁路数据对应的终端的第一旁路链路。
所述第一数据传输模块 721 ,用于将旁路数据通过所述第一旁路链路发送 给所述旁路数据对应的终端。
进一步可选的, 为了进一步节省了网络资源, 所述第一数据传输模块 721 还用于, 将非旁路数据通过所述第一旁路链路发送给所述非旁路数据对应的 终端。
进一步可选的, 当所述 BM-SC为位于 CN侧的 BM-SC , 与接入网侧的本地 网关直接相连, 并且数据内容下移到接入网侧时, 如图 16所示, 所述发送单 元 71 包括第二发送模块 71 2 ; 所述数据传输单元 72 包括第二数据传输模块 722。
所述第二发送模块 71 2 ,用于向所述本地网关发送所述旁路传输数据的会 话请求消息, 建立从所述接入网侧的本地网关起, 并经由接入网侧的网元到 达旁路数据对应的终端的第二旁路链路。
所述第二数据传输模块 722 ,用于将旁路数据通过所述第二旁路链路发送 给所述旁路数据对应的终端。
进一步可选的, 当所述 BM-SC为 L-BM-SC , 与接入网侧的本地网关直接相 连, 并且数据内容存储于所述 L-BM-SC时, 如图 17所示, 所述发送单元 71 包括第三发送模块 73; 所述数据传输单元 72包括第三数据传输单元 723。 所述第三发送模块 71 3 ,用于向所述本地网关发送所述旁路传输数据的会 话请求消息, 建立从 L-BM-SC起, 通过所述接入网侧的本地网关, 并经由接 入网侧的网元到达旁路数据对应的终端的第三旁路链路。
所述第三数据传输模块 723 ,用于将旁路数据通过所述第三旁路链路发送 给所述旁路数据对应的终端。
进一步可选的, 当所述 BM-SC为 BM-SC代理, 与接入网侧的本地网关直 接相连, 并且数据内容存储于所述 BM-SC代理时, 如图 18所示, 所述发送单 元 71 包括第四发送模块 714; 所述数据传输单元 72 包括第四数据传输模块
724。
所述第四发送模块 714 ,用于向所述本地网关发送所述旁路传输数据的会 话请求消息, 建立从 丽 -SC代理起, 通过所述接入网侧的本地网关, 并经由 接入网侧的网元到达旁路数据对应的终端的第四旁路链路。
所述第四数据传输模块 724 ,用于将旁路数据通过所述笫四旁路链路发送 给所述旁路数据对应的终端。
进一步可选的, 当所述 BM-SC为位于 CN侧的 BM-SC, 与接入网侧的流量 旁路功能模块 T0F直接相连时, 如图 19所示, 所述发送单元 71 包括第五发 送模块 715; 所述数据传输单元 72包括第五数据传输模块 725。
所述第五发送模块 715 , 用于向 CN网元发送所述旁路传输数据的会话请 求消息, 建立从位于 CN侧的 BM-SC起, 通过所述 T0F, 并经由接入网侧的网 元到达旁路数据对应的终端的第五旁路链路。
所述第五数据传输模块 725 ,用于将旁路数据通过所述笫五旁路链路发送 给所述旁路数据对应的终端。
需要说明的是, 本发明实施例提供的广播组播业务服务中心的各功能模 块的其他功能, 可以参考实施例 1至实施例 6 中的相应描述, 本发明实施例 此处将不再赘述。
本发明实施例中, 在进行 MBMS数据传输时, 发送旁路传输数据的会话请 求消息, 建立旁路传输数据的旁路链路; 并且将一部分 MBMS数据作为旁路数 据, 将该旁路数据通过所述旁路链路发送给所述旁路数据对应的终端; 实现 了旁路传输 MBMS数据,避免了 MBMS数据从广播组播业务中心到 CN以及从 CN 到无线接入网的传输, 节省了网络资源。
并且, 本发明实施例中, 在本地网关将旁路 MBMS数据, 通过接入侧的网 元建立的无线网络资源发送给旁路 MBMS数据对应的终端时, 还可以由本地网 关将非旁路 MBMS数据通过接入侧的网元建立的无线网络资源发送给非 MBMS 数据对应的终端, 避免了非旁路 MBMS数据从广播组播业务中心到 CN 以及从 CN到无线接入网的传输, 节省了网络资源。
通过以上的实施方式的描述, 所属领域的技术人员可以清楚地了解到本 发明可借助软件加必需的通用硬件的方式来实现, 当然也可以通过硬件, 但 很多情况下前者是更佳的实施方式。 基于这样的理解, 本发明的技术方案本 质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来, 该 计算机软件产品存储在可读取的存储介质中, 如计算机的软盘, 硬盘或光盘 等, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等)执行本发明各个实施例所述的方法。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应以所述权利要求的保护范围为准。

Claims

权利 要求 书
1、 一种广播组播业务数据传输方法, 其特征在于, 包括:
广播组播业务中心 BM-SC发送旁路传输数据的会话请求消息, 建立旁路传 输数据的旁路链路;
所述 BM-SC将旁路数据通过所述旁路链路发送给所述旁路数据对应的终端。
2、 根据权利要求 1所述的广播组播业务数据传输方法, 其特征在于, 所述 BM-SC为: 位于核心网 CN侧的 BM-SC; 或者位于所述接入网侧的本地广播组播 业务中心 L- BM- SC或 BM- SC代理。
3、 根据权利要求 2所述的广播组播业务数据传输方法, 其特征在于, 当所 述位于 CN侧的 BM-SC与接入网侧的本地网关直接相连, 并且数据内容存储于所 述位于 CN侧的 BM-SC时,
所述 BM-SC发送旁路传输数据的会话请求消息, 建立旁路传输数据的旁路 链路为: 所述位于 CN侧的 BM-SC向所述本地网关发送所述旁路传输数据的会话 请求消息 , 建立从位于 CN侧的 BM-S C起, 通过所述接入网侧的本地网关, 并经 由接入网侧的网元到达旁路数据对应的终端的第一旁路链路;
所述 BM-SC 将旁路数据通过所述旁路链路发送给所述旁路数据对应的终端 为: 所述位于 CN侧的 BM-SC将旁路数据通过所述第一旁路链路发送给所述旁路 数据对应的终端。
4、 根据权利要求 3所述的广播组播业务数据传输方法, 其特征在于, 该方 法还包括:
所述位于 CN侧的 BM-SC将非旁路数据通过所述第一旁路链路发送给所述非 旁路数据对应的终端。
5、 根据权利要求 2所述的广播组播业务数据传输方法, 其特征在于, 当所 述位于 CN侧的 BM-SC与接入网侧的本地网关直接相连, 并且数据内容下移到接 入网侧时,
所述 BM-SC发送旁路传输数据的会话请求消息, 建立旁路传输数据的旁路 链路为: 所述位于 CN侧的 BM-SC所述 BM-SC向所述本地网关发送所述旁路传输 数据的会话请求消息, 建立从所述接入网侧的本地网关起, 并经由接入网侧的 网元到达旁路数据对应的终端的第二旁路链路;
所述 BM-SC 将旁路数据通过所述旁路链路发送给所述旁路数据对应的终端 为: 所述位于 CN侧 BM-SC将旁路数据通过所述第二旁路链路发送给所述旁路数 据对应的终端。
6、 根据权利要求 2所述的广播组播业务数据传输方法, 其特征在于, 当所 述 L- BM- SC与接入网侧的本地网关直接相连,并且数据内容存储于所述 L- BM-SC 时,
所述 BM-SC发送旁路传输数据的会话请求消息, 建立旁路传输数据的旁路 链路为: 所述 L- BM- SC向所述本地网关发送所述旁路传输数据的会话请求消息, 建立从 L-BM-SC起, 通过所述接入网侧的本地网关, 并经由接入网侧的网元到 达旁路数据对应的终端的第三旁路链路;
所述 BM-SC 将旁路数据通过所述旁路链路发送给所述旁路数据对应的终端 为: 所述 L-丽- SC将旁路数据通过所述第三旁路链路发送给所述旁路数据对应 的终端。
7、 根据权利要求 2所述的广播组播业务数据传输方法, 其特征在于, 当所 述 BM-SC代理与接入网侧的本地网关直接相连,并且数据内容存储于所述 BM-SC 代理时,
所述 BM-SC发送旁路传输数据的会话请求消息, 建立旁路传输数据的旁路 链路为: 所述 BM-SC 代理向所述本地网关发送所述旁路传输数据的会话请求消 息, 建立从 BM-SC代理起, 通过所述接入网侧的本地网关, 并经由接入网侧的 网元到达旁路数据对应的终端的第四旁路链路;
所述 BM-SC 将旁路数据通过所述旁路链路发送给所述旁路数据对应的终端 为: 所述 BM-SC代理将旁路数据通过所述第四旁路链路发送给所述旁路数据对 应的终端。
8、 根据权利要求 2所述的广播组播业务数据传输方法, 其特征在于, 当所 述位于 CN侧的 BM-SC与接入网侧的流量旁路功能模块 T0F直接相连时, 所述 BM-SC发送旁路传输数据的会话请求消息, 建立旁路传输数据的旁路 链路为: 所述位于 CN侧的 BM-SC向 CN网元发送所述旁路传输数据的会话请求 消息 , 建立从位于 CN侧的 BM-SC起, 通过所述 T0F , 并经由接入网侧的网元到 达旁路数据对应的终端的第五旁路链路;
所述腿 -SC 将旁路数据通过所述旁路链路发送给所述旁路数据对应的终端 为: 所述位于 CN侧的 BM-SC将旁路数据通过所述第五旁路链路发送给所述旁路 数据对应的终端。
9、 一种广播组播业务中心, 其特征在于, 包括:
发送单元, 用于发送旁路传输数据的会话请求消息, 建立旁路传输数据的 旁路链路;
数据传输单元, 用于将旁路数据通过所述旁路链路发送给所述旁路数据对 应的终端。
1 0、 根据权利要求 9 所述的广播组播业务中心, 其特征在于, 广播组播业 务中心 BM-SC为: 位于核心网 CN侧的 BM-SC ; 或者位于所述接入网侧的本地广 播组播业务中心 L- BM- SC或 BM- SC代理。
1 1、 根据权利要求 1 0所述的广播组播业务中心, 其特征在于, 当所述位于 CN侧的 BM-SC与接入网侧的本地网关直接相连, 并且数据内容存储于所述位于 CN侧的 BM-SC时,
所述发送单元包括笫一发送模块, 用于向所述本地网关发送所述旁路传输 数据的会话请求消息 , 建立从位于 CN侧的 BM-SC起, 通过所述接入网侧的本地 网关, 并经由接入网侧的网元到达旁路数据对应的终端的第一旁路链路;
所述数据传输单元包括第一数据传输模块, 用于将旁路数据通过所述第一 旁路链路发送给所述旁路数据对应的终端。
12、 根据权利要求 1 0所述的广播组播业务中心, 其特征在于, 所述第一数 据传输模块还用于, 将非旁路数据通过所述第一旁路链路发送给所述非旁路数 据对应的终端。
1 3、 根据权利要求 10所述的广播组播业务中心, 其特征在于, 当所述位于 CN侧的 BM-SC与接入网侧的本地网关直接相连, 并且数据内容下移到接入网侧 时,
所述发送单元包括第二发送模块, 用于向所述本地网关发送所述旁路传输 数据的会话请求消息, 建立从所述接入网侧的本地网关起, 并经由接入网侧的 网元到达旁路数据对应的终端的第二旁路链路;
所述数据传输单元包括第二数据传输模块, 用于将旁路数据通过所述第二 旁路链路发送给所述旁路数据对应的终端。
14、根据权利要求 1 0所述的广播组播业务中心,其特征在于,当所述 L- BM- SC 与接入网侧的本地网关直接相连, 并且数据内容存储于所述 L-BM-SC时,
所述发送单元包括第三发送模块, 用于向所述本地网关发送所述旁路传输 数据的会话请求消息, 建立从 L-腿 -SC 起, 通过所述接入网侧的本地网关, 并 经由接入网侧的网元到达旁路数据对应的终端的第三旁路链路;
所述数据传输单元包括第三数据传输模块, 用于将旁路数据通过所述第三 旁路链路发送给所述旁路数据对应的终端。
15、根据权利要求 10所述的广播组播业务中心,其特征在于, 当所述 BM-SC 代理与接入网侧的本地网关直接相连, 并且数据内容存储于所述 BM-SC代理时, 所述发送单元包括第四发送模块, 用于向所述本地网关发送所述旁路传输 数据的会话请求消息, 建立从 丽 -SC代理起, 通过所述接入网侧的本地网关, 并经由接入网侧的网元到达旁路数据对应的终端的第四旁路链路;
所述数据传输单元包括第四数据传输模块, 用于将旁路数据通过所述第四 旁路链路发送给所述旁路数据对应的终端。
16、 根据权利要求 10所述的广播组播业务中心, 其特征在于, 当所述位于 CN侧的 BM-SC与接入网侧的流量旁路功能模块 T0F直接相连时,
所述发送单元包括第五发送模块, 用于向 CN网元发送所述旁路传输数据的 会话请求消息, 建立从位于 CN侧的腿 -SC起, 通过所述 T0F, 并经由接入网侧 的网元到达旁路数据对应的终端的第五旁路链路;
所述数据传输单元包括第五数据传输模块, 用于将旁路数据通过所述第五 旁路链路发送给所述旁路数据对应的终端 '
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