WO2011000265A1 - 一种同步调度方法、装置和系统 - Google Patents
一种同步调度方法、装置和系统 Download PDFInfo
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- WO2011000265A1 WO2011000265A1 PCT/CN2010/074016 CN2010074016W WO2011000265A1 WO 2011000265 A1 WO2011000265 A1 WO 2011000265A1 CN 2010074016 W CN2010074016 W CN 2010074016W WO 2011000265 A1 WO2011000265 A1 WO 2011000265A1
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- mbms
- base station
- station device
- synchronization data
- scheduling
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- 230000001360 synchronised effect Effects 0.000 claims description 31
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- 230000005540 biological transmission Effects 0.000 description 41
- 210000004027 cell Anatomy 0.000 description 20
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- 238000010586 diagram Methods 0.000 description 8
- 102100033721 Pro-MCH Human genes 0.000 description 6
- 101800002739 Melanin-concentrating hormone Proteins 0.000 description 5
- 210000004754 hybrid cell Anatomy 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/121—Wireless traffic scheduling for groups of terminals or users
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
Definitions
- the present invention relates to the field of mobile communication technologies, and in particular, to a synchronization scheduling method, apparatus, and system. Background technique
- MBMS Multimedia Broadcast Multicast Service
- 3GPP 3rd Generation Partnership Project
- R6 3rd Generation Partnership Project
- the MBMS dedicated frequency layer and the frequency layer shared with non-MBMS services can provide MBMS.
- the LTE cell supporting MBMS can be an MBMS dedicated cell or an MBMS/unicast hybrid. Community.
- the MBMS dedicated frequency layer refers to a frequency layer dedicated to MBMS transmission.
- the cell is an MBMS dedicated cell; when a cell is configured not specifically for MBMS transmission.
- the frequency layer the cell is an MBMS/unicast hybrid cell, and the unicast and MBMS services in the MBMS/unicast hybrid cell are cooperatively transmitted, and are used for MBMS service transmission at some moments, and for unicast service transmission at other moments.
- MBMS can perform single cell transmission or multi-cell transmission.
- MBMS single cell transmission means that MBMS transmits only within the coverage of one designated cell, does not support the combination of MBMS transmission from multiple cells, and multi-cell transmission of MBMS. Need to support MBSFN transmission mode.
- MBSFN Multicast Broadcast Single Frequency Network
- the MBSFN requires multiple cells to simultaneously transmit the same content.
- the UE (User Equipment, User Equipment) receiver can treat multiple MBSFN cells as one large cell, not only without inter-cell interference transmitted by neighboring cells, but also Will benefit from the superposition of signals from multiple MBSFN cells.
- Both the MBMS dedicated cell and the MBMS/unicast hybrid cell can adopt the MBSFN transmission mode.
- the advanced UE receiver technology can also solve the problem of time difference of multipath propagation, thereby eliminating intra-cell interference; the diversity effect brought by multi-cell co-frequency transmission can also solve the problem of blind zone coverage and enhance the reliability of reception. Improve coverage.
- MBMS multi-cell transmission include: synchronous transmission of MBMS in MBSFN area; consolidation of multi-cell MBMS transmission; MTCH (MBMS point-to-multipoint traffic channel) and MCCH of multimedia broadcast multicast service (MBMS point-to-multipoint Control Channel, MSDN (Multicast Channel) for PTM (Point to Multi-point) transmission) Up; MBSFN sync area i can be semi-statically configured by O&M (Operation and Maintenance) system.
- O&M Operaation and Maintenance
- the spectrum efficiency of MBMS can reach 2bps/Hz or higher. Assuming a carrier bandwidth of 20 MHz, each subframe can carry at least 40k information bit bits.
- statistical multiplexing can be applied to a system of multi-stream transmission, and multiplexing gain is obtained by multiplexing multiple streams on shared resources. Statistical multiplexing is also applicable to broadcast systems, and gains can be obtained through statistical characteristics.
- multiple MBMSs can be mapped to the same MCH, and dynamic multiplexing gain can be obtained by properly allocating resources for MCH and dynamically scheduling multiple services on the MCH.
- the multi-cell transmission content synchronization mechanism should satisfy the following conditions: All base stations in the MBSFN synchronization area obtain synchronized radio frame timing so that radio frames can be simultaneously transmitted; all base stations implement the same RLC (Radio Link Control) for the same MBMS or MCCH control message. , Wireless Link Control) / MAC (Media Access Control) / PHY (Physical) layer configuration; EMBMS ( Evolution Multimedia Broadcast Multicast Service) GW ( Gate Way, gateway) broadcasts the MBMS packet with the SYNC synchronization protocol to each base station of the transmission service; all base stations transmit the MCCH message on the air interface designated resource at the specified transmission time and send the MBMS data according to the SYNC protocol.
- RLC Radio Link Control
- MAC Media Access Control
- PHY Physical
- EMBMS Evolution Multimedia Broadcast Multicast Service
- GW Gate Way, gateway
- the LTE system also defines an MSCH (MBMS point-to-multipoint Scheduling Channel) for ensuring that the base station simultaneously transmits multiple MBMS data within a certain scheduling interval.
- MSCH MBMS point-to-multipoint Scheduling Channel
- Embodiments of the present invention provide a synchronization scheduling method, apparatus, and system, to ensure that a plurality of MBMSs can be synchronously scheduled and synchronized and multiplexed between base station devices.
- the embodiment of the invention provides a synchronization scheduling method, which includes the following steps:
- the base station device acquires a scheduling sequence of the multimedia broadcast multicast service MBMS; the base station device sorts the received MBMS synchronization data frames according to the scheduling order of the MBMS, and sends the MBMS synchronization data frame according to the sorted result. .
- the embodiment of the present invention further provides a base station device, including: an acquiring module, configured to acquire a scheduling sequence of a multimedia broadcast multicast service MBMS; a receiving module, configured to receive an MBMS synchronization data frame from a core network; And arranging, according to a scheduling sequence of the MBMS acquired by the acquiring module, an MBMS synchronization data frame received by the receiving module;
- a sending module configured to send, according to the sorting result of the sorting module, an MBMS synchronization data frame received by the receiving module.
- the embodiment of the present invention further provides a multimedia broadcast multicast service coordination entity MCE, including:
- a receiving module configured to receive a session start message of a multimedia broadcast multicast service MBMS from a core network
- a constructing module configured to construct a multimedia broadcast multicast service point-to-multipoint control channel MCCH message according to the MBMS session start message received by the receiving module;
- a sending module configured to send the MCCH message constructed by the constructing module to the base station device, so that the base station device acquires a scheduling sequence of the MBMS according to the MCCH message.
- the embodiment of the invention further provides a synchronization scheduling system, including:
- a multimedia broadcast multicast service coordination entity MCE configured to construct a multimedia broadcast multicast service point-to-multipoint control channel MCCH message according to the session start message of the multimedia broadcast multicast service MBMS, and send the MCCH message to the base station device;
- a base station device configured to receive an MCCH message from the MCE, and use an MBMS bearer identifier in an MBMS bearer information list included in the MCCH message as a scheduling sequence of the MBMS, according to a scheduling sequence of the MBMS, to receive
- the MBMS synchronization data frames are sorted, and the MBMS synchronization data frames are transmitted according to the sorted result.
- the technical solution of the embodiment of the present invention has the following advantages, because the base station device acquires the scheduling sequence of the MBMS before transmitting the MBMS synchronization data frame, and sorts the received MBMS synchronization data frames according to the scheduling sequence, thereby ensuring It is possible to perform synchronous scheduling and synchronous multiplexing on multiple MBMSs, so that the system obtains the statistical multiplexing gain of the MBMS service.
- FIG. 1 is a flowchart of a synchronization scheduling method according to Embodiment 1 of the present invention.
- FIG. 2 is a flowchart of a synchronization scheduling method according to Embodiment 2 of the present invention.
- FIG. 3 is a flowchart of a synchronization scheduling method according to Embodiment 3 of the present invention.
- FIG. 4 is a flowchart of a synchronization scheduling method according to Embodiment 4 of the present invention.
- FIG. 5 is a schematic diagram of a format of an MBMS synchronization data frame according to Embodiment 4 of the present invention.
- FIG. 6 is a schematic structural diagram of a base station device according to Embodiment 5 of the present invention.
- FIG. 7 is a schematic structural diagram of an MCE according to Embodiment 6 of the present invention.
- FIG. 8 is a schematic structural diagram of a synchronous scheduling system according to Embodiment 7 of the present invention.
- the technical solution provided by the embodiment of the present invention is that the base station device acquires the scheduling sequence of the MBMS before sending the MBMS synchronization data frame, and sorts the received MBMS synchronization data frames according to the scheduling sequence, thereby ensuring that the base station devices can Multiple MBMSs perform synchronous scheduling and synchronous multiplexing.
- FIG. 1 it is a flowchart of a synchronization scheduling method according to Embodiment 1 of the present invention, which includes the following steps:
- Step 101 The base station device acquires a scheduling sequence of the MBMS.
- the base station device may receive the MCCH message from the MCE (MBMS Coordination Entity), and the order of occurrence of the MBMS bearer identifier in the MBMS bearer information list included in the MCCH message is used as the scheduling sequence of the MBMS;
- the configuration of the O&M system can also be accepted.
- the scheduling sequence of the MBMS is determined according to the configuration result.
- the result of the configuration includes the scheduling order of the TMGI (Temporary Mobile Group Identity) or the MBMS identifier.
- the MBMS from the core network can also be received. Synchronizing the data frame, determining the scheduling order of the MBMS according to the packet number in the MBMS synchronization data frame.
- Step 102 The base station device sorts the received MBMS synchronization data frames according to the scheduling order of the MBMS, and sends the MBMS synchronization data frame according to the sorted result.
- the base station device Before receiving the MBMS synchronization data frame, the base station device needs to join the corresponding multicast group according to the IP multicast address included in the MCCH message. Since the IP network is non-connected, the multiple MBMS synchronization data frames received by the base station device will arrive in an out-of-order manner. Therefore, after determining the scheduling sequence of the MBMS, the base station device may sort the plurality of MBMS synchronization data frames received out of order, and The MBMS synchronization data frame is scheduled and transmitted through the MSCH according to the sorting result.
- the technical solution of the embodiment of the present invention has the following advantages, because the base station device acquires the scheduling sequence of the MBMS before transmitting the MBMS synchronization data frame, and sorts the received MBMS synchronization data frames according to the scheduling sequence, thereby ensuring It is possible to perform synchronous scheduling and synchronous multiplexing on multiple MBMSs, so that the system obtains the statistical multiplexing gain of the MBMS service.
- the above embodiment provides a synchronous scheduling method. The following embodiments of the present invention are described in detail in detail with reference to specific application scenarios.
- FIG. 2 it is a flowchart of a synchronization scheduling method in Embodiment 2 of the present invention, which includes the following steps:
- Step 201 The MCE constructs an MCCH message according to the session start message of the MBMS. Specifically, to ensure that the MCCH can be synchronized between all the base station devices in the entire MBSFN area, the MCE needs to uniformly configure the content of the MCCH message.
- the MCE sends the MCCH message to the base station device.
- the MCE transmits the constructed MCCH message to each base station device in the MBSFN area through the M2 interface.
- Step 203 The base station device receives the MCCH message from the MCE.
- Step 204 The base station device uses the appearance order of the MBMS bearer identifier in the MBMS bearer information list included in the MCCH message as the scheduling sequence of the MBMS, and according to
- the IP multicast address in the MCCH message is added to the corresponding multicast group.
- the MBMS bearer information list in the MCCH message includes an MBMS bearer identifier, an MBMS service identifier, an MBMS session identifier, and an IP multicast address.
- the base station device may use the order in which the MBMS bearer identifiers appear as the order in which the MSCH schedules different MBMSs in the scheduling time. You can also join the corresponding multicast group according to the IP multicast address configured on different MBMS service planes.
- Step 205 The base station device receives an MBMS synchronization data frame from a core network. Specifically, after the base station device joins the multicast group corresponding to the MBMS, it starts to receive the MBMS service data broadcast from the core network, and obtains an MBMS synchronization data frame, where the MBMS synchronization data frame includes a synchronization protocol header, that is, unified transmission for different base station devices. time.
- Step 206 The base station device reorders the received MBMS synchronization data frames according to the scheduling sequence of the MBMS.
- the base station device can perform the determination according to step 204.
- the scheduling sequence of the MBMS sorts the synchronization data frames corresponding to different MBMSs, and stipulates a unified service transmission sequence.
- Step 207 The base station device sends the MBMS synchronization data frame according to the sorted result. After the base station equipment determines the service transmission order of different MBMSs, the MBMS synchronization data frame is scheduled and sent through the MSCH. If the MBMS is changed, the MCE may send the updated MBMS 7-loaded identification sequence to the base station device through the M2 interface; accordingly, the base station device determines a new service sequence according to the updated MBMS bearer identification sequence, and according to the new scheduling sequence in the next scheduling period. The service sequence sorts and schedules the MBMS synchronization data frames.
- the technical solution of the embodiment of the present invention has the following advantages, because the base station device obtains the scheduling sequence of the MBMS by using the received MCCH message, and sorts the received MBMS synchronization data frames according to the scheduling sequence, thereby ensuring that the base station devices can Multiple MBMSs perform synchronous scheduling and synchronous multiplexing, so that the system obtains the statistical multiplexing gain of the MBMS service.
- the base station device can obtain the scheduling sequence of the MBMS by using the received MCCH message, and the scheduling sequence of the MBMS can also be configured by the O&M system.
- FIG. 3 it is a flowchart of a synchronization scheduling method in Embodiment 3 of the present invention, which includes the following steps:
- Step 301 The O&M system configures a scheduling sequence of the TMGI or the MBMS identifier to the base station device.
- Step 302 The base station device accepts the configuration of the O&M system, according to the configuration result. Set the scheduling order of MBMS.
- Step 303 The base station device receives the MCCH message from the MCE, and joins the corresponding multicast group according to the IP multicast address in the MCCH message.
- the MBMS bearer information list in the MCCH message may include an MBMS bearer identifier, an MBMS service identifier, an MBMS session identifier, and an IP multicast address, and the base station device may only obtain an IP multicast address in the MBMS bearer information list, and according to different MBMS services.
- the IP multicast address configured in the face is added to the corresponding multicast group.
- Step 304 The base station device receives an MBMS synchronization data frame from the core network. Specifically, after the base station device joins the multicast group corresponding to the MBMS, it starts to receive the MBMS service data broadcast from the core network, and obtains an MBMS synchronization data frame, where the MBMS synchronization data frame includes a synchronization protocol header, that is, unified transmission for different base station devices. time.
- Step 305 The base station device reorders the received MBMS synchronization data frames according to the scheduling sequence of the MBMS.
- the base station device can perform the determination according to step 302.
- the scheduling sequence of the MBMS sorts the synchronization data frames corresponding to different MBMSs, and stipulates a unified service transmission sequence.
- Step 306 The base station device sends the MBMS synchronization data frame according to the sorted result. After the base station equipment determines the service transmission order of different MBMSs, the MBMS synchronization data frame is scheduled and sent through the MSCH. If the MBMS is changed, the O&M system may reconfigure the scheduling sequence of the TMGI or the MBMS identifier to the base station device. Accordingly, the base station device determines a new service sequence according to the result of the reconfiguration, and synchronizes the MBMS according to the new service sequence in the next scheduling period. Data frames are sorted and scheduled for transmission.
- the technical solution of the embodiment of the present invention has the following advantages, because the base station device is based on The configuration result of the O&M system obtains the scheduling sequence of the MBMS, and sorts the received MBMS synchronization data frames according to the scheduling sequence, thereby ensuring that the base station devices can perform synchronous scheduling and synchronization multiplexing on multiple MBMSs, so that the system obtains the MBMS.
- the statistical multiplexing gain of the service is configured by the O&M system, and the scheduling sequence may also be predetermined in the core network.
- FIG. 4 it is a flowchart of a synchronization scheduling method in Embodiment 4 of the present invention, which includes the following steps:
- Step 401 The base station device receives the MCCH message from the MCE, and joins the corresponding multicast group according to the IP multicast address in the MCCH message.
- the MBMS bearer information list in the MCCH message may include an MBMS bearer identifier, an MBMS service identifier, an MBMS session identifier, and an IP multicast address, and the base station device may only obtain an IP multicast address in the MBMS bearer information list, and according to different MBMS services.
- the IP multicast address configured in the face is added to the corresponding multicast group.
- Step 402 The core network sorts the MBMS, and adds the MBMS packet number to the corresponding MBMS synchronization data frame.
- the core network sorts the MBMS in advance, and adds the group number of the sorted MBMS to the corresponding MBMS synchronization data frame.
- FIG. 5 it is a schematic diagram of a format of an MBMS synchronization data frame in Embodiment 4 of the present invention.
- Timestamp sends an absolute timestamp for the air interface of MBMS
- Packet Nr is the packet number of all MBMS sorted
- Elapsed Octet ctr is the number of bytes sent.
- Step 403 The core network sends the MBMS synchronization data frame to the base station device.
- Step 404 The base station device receives the MBMS synchronization data frame from the core network, and determines the scheduling sequence of the MBMS according to the packet number in the MBMS synchronization data frame.
- the base station device After the base station device joins the multicast group corresponding to the MBMS, it starts to receive the MBMS service data broadcast from the core network, and obtains an MBMS synchronization data frame, where the MBMS synchronization data frame includes a synchronization protocol header, that is, unified transmission for different base station devices. Time Engraved.
- Step 405 The base station device reorders the received MBMS synchronization data frames according to the scheduling order of the MBMS.
- the base station device can perform the determination according to step 404.
- the scheduling sequence of the MBMS sorts the synchronization data frames corresponding to different MBMSs, and stipulates a unified service transmission sequence.
- Step 406 The base station device sends the MBMS synchronization data frame according to the sorted result. After the base station equipment determines the service transmission order of different MBMSs, the MBMS synchronization data frame is scheduled and sent through the MSCH.
- FIG. 6 is a schematic structural diagram of a base station device according to Embodiment 5 of the present invention, including:
- the obtaining module 610 is configured to obtain a scheduling sequence of the MBMS.
- the obtaining module 610 is a part of the base station device that is responsible for acquiring the scheduling sequence of the MBMS, and may be software, hardware, or a combination of the two.
- the receiving module 620 is configured to receive an MBMS synchronization data frame from the core network. Specifically, the obtaining module 610 may use the order of occurrence of the MBMS bearer identifier included in the MCCH message received by the receiving module 620 as the scheduling sequence of the MBMS.
- the configuration of the O&M system can also be accepted, and the scheduling sequence of the MBMS is determined according to the result of the configuration.
- the result of the configuration includes the scheduling sequence of the TMGI or the MBMS identifier.
- the MBMS synchronization data frame from the core network can also be received, and the data frame is synchronized according to the MBMS.
- the packet number determines the scheduling order of the MBMS.
- the receiving module 620 is a part of the base station device that is responsible for receiving the MBMS synchronization data frame from the core network, and may be software, hardware, or a combination of the two.
- the sorting module 630 is configured to sort the MBMS synchronization data frames received by the receiving module 620 according to the scheduling order of the MBMS acquired by the obtaining module 610.
- the sorting module 630 is the part of the base station device that is responsible for sorting the MBMS synchronization data frames, and may be software, hardware, or a combination of the two.
- the sending module 640 is configured to send, according to the sorting result of the sorting module 630, the MBMS synchronization data frame received by the receiving module 620.
- the receiving module 620 needs to join the corresponding multicast group according to the IP multicast address included in the MCCH message. Since the IP network is non-connected, the multiple MBMS synchronization data frames received by the receiving module 620 will arrive out of order. Therefore, the ordering module 630 can synchronize multiple MBMSs received out of order according to the scheduling order of the MBMS determined by the obtaining module 610. The data frames are sorted, and the sending module 640 performs scheduling transmission on the MBMS synchronization data frame through the MSCH according to the sorting result.
- the foregoing sending module 640 is a part of the base station device that is responsible for transmitting the MBMS synchronization data frame, and may be software, hardware, or a combination of the two.
- the obtaining module 610 is specifically configured to receive the MCCH message from the MCE, and use the MBMS carrying identifier in the MBMS 7-package information list included in the MCCH message as the scheduling sequence of the MBMS.
- the MBMS bearer information list in the MCCH message includes an MBMS bearer identifier, an MBMS service identifier, an MBMS session identifier, and an IP multicast address.
- the obtaining module 610 may use the order in which the MBMS bearer identifiers appear as the order in which the MSCH schedules different MBMSs in the scheduling time. You can also join the corresponding multicast group according to the IP multicast address configured on different MBMS service planes.
- the obtaining module 610 is further configured to receive the configuration of the O&M system, according to the configuration.
- the result of the setting determines the scheduling order of the MBMS, and the result of the configuration includes the scheduling order of the TMGI or the MBMS identifier.
- the obtaining module 610 is further configured to determine a scheduling sequence of the MBMS according to the packet number in the MBMS synchronization data frame received by the receiving module 620.
- FIG. 7 is a schematic structural diagram of an MCE according to Embodiment 6 of the present invention, including:
- the receiving module 710 is configured to receive a session start message of the MBMS from the core network.
- the receiving module 710 is the part of the MCE that is responsible for receiving the session start message from the MBMS of the core network, and may be software, hardware or a combination of the two.
- the constructing module 720 is configured to construct an MCCH message according to the session start message of the MBMS received by the receiving module 710.
- id Radio Bear Identity
- the above construction module 720 is the part of the MCE that is responsible for constructing the MCCH message, and may be software, hardware or a combination of the two.
- the sending module 730 is configured to send the MCCH message constructed by the constructing module 720 to the base station device, so that the base station device obtains the scheduling sequence of the MBMS according to the MCCH message.
- the sending module 730 transmits the MCCH message to the MBSFN through the M2 interface.
- Each base station device under the zone Each base station device under the zone.
- the above MCCH message includes an MBMS bearer information list, and the MBMS bearer information list includes an MBMS 7 bearer identifier, and the appearance order of the MBMS bearer identifier is used as a scheduling order of the MBMS.
- the foregoing sending module 730 is the part of the MCE that is responsible for sending the MCCH message to the base station device, and may be software, hardware, or a combination of the two.
- the base station device receives the MCCH message from the MCE, and uses the appearance order of the MBMS bearer identifier in the MBMS bearer information list included in the MCCH message as the scheduling order of the MBMS, and joins the corresponding multicast group according to the IP multicast address in the MCCH message.
- the MBMS bearer information list in the MCCH message includes an MBMS bearer identifier, an MBMS service identifier, an MBMS session identifier, and an IP multicast address.
- the base station device may use the order in which the MBMS bearer identifiers appear as the order in which the MSCH schedules different MBMSs in the scheduling time. You can also join the corresponding multicast group according to the IP multicast address configured on different MBMS service planes.
- the base station device After the base station device joins the multicast group corresponding to the MBMS, it starts to receive the MBMS service data broadcast from the core network, and obtains the MBMS synchronization data frame, where the MBMS synchronization data frame includes a synchronization protocol header, that is, a unified transmission time for different base station devices.
- the synchronization data frames corresponding to the multiple MBMSs received by the base station device will arrive in an out-of-order manner.
- the base station device can follow the determined scheduling of the MBMS.
- the synchronization data frames corresponding to different MBMSs are sequentially sorted, and a unified service transmission order is agreed.
- the MBMS synchronization data frame is scheduled and sent through the MSCH. If the MBMS is changed, the sending module 730 may send the updated MBMS bearer identification sequence to the base station device by using the M2 interface, and correspondingly, the base station device determines a new service sequence according to the updated MBMS 7
- the MBMS synchronization data frames are sorted and scheduled for transmission according to the new service sequence.
- FIG. 8 is a schematic structural diagram of a synchronous scheduling system according to Embodiment 7 of the present invention, including:
- the MCE 810 is configured to construct an MCCH message according to the session start message of the MBMS, and send the MCCH message to the base station device 820.
- the MCE 810 transmits the constructed MCCH message to each base station device in the MBSFN area through the M2 interface.
- the base station device 820 is configured to receive the MCCH message from the MCE 810, and use the order of occurrence of the MBMS bearer identifier in the MBMS 7-package information list included in the MCCH message as the scheduling order of the MBMS, according to the scheduling order of the MBMS, The MBMS sync data frames are sorted and the MBMS sync data frames are sent according to the sorted result.
- the MBMS bearer information list in the MCCH message includes an MBMS bearer identifier, an MBMS service identifier, an MBMS session identifier, and an IP multicast address.
- the base station device 820 can use the order in which the MBMS bearer identifiers appear as the order in which the MSCH schedules different MBMSs in the scheduling time. You can also join the corresponding multicast group according to the IP multicast address configured on different MBMS service planes.
- the base station device 820 After the base station device 820 joins the multicast group corresponding to the MBMS, it starts to receive from the core.
- the MBMS service data broadcast of the network acquires an MBMS synchronization data frame, where the MBMS synchronization data frame includes a synchronization protocol header, that is, a unified transmission time for different base station devices.
- the synchronization data frames corresponding to the multiple MBMSs received by the base station device 820 will arrive out of order.
- the base station device 820 can follow the determined MBMS.
- the scheduling sequence sorts the synchronization data frames corresponding to different MBMSs, and stipulates a uniform service transmission order.
- the base station device 820 After determining the service transmission order of different MBMSs, the base station device 820 schedules and transmits the MBMS synchronization data frames through the MSCH. If the MBMS is changed, the MCE 810 may send the updated MBMS bearer identification sequence to the base station device 820 through the M2 interface. Accordingly, the base station device 820 determines a new service sequence according to the updated MBMS bearer identification sequence, and according to the next scheduling period. The new service sequence sorts and schedules the MBMS synchronization data frames.
- the technical solution of the embodiment of the present invention has the following advantages, because the base station device 820 acquires the scheduling sequence of the MBMS by using the received MCCH message, and sorts the received MBMS synchronization data frames according to the scheduling sequence, thereby ensuring that the base station devices can Synchronous scheduling and synchronous multiplexing of multiple MBMSs enable the system to obtain statistical multiplexing gain of MBMS services.
- the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way.
- 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 storage medium, including a plurality of instructions for making a A terminal device (which may be a cell phone, a personal computer, a server, or a network device, etc.) performs the methods described in various embodiments of the present invention.
- modules in the device in the embodiment can be implemented according to the actual The embodiment description is carried out in a device distributed in the embodiment, and the corresponding change can also be made in one or more devices different from the embodiment.
- the modules of the foregoing embodiments may be integrated into one, or may be deployed separately, may be combined into one module, or may be further split into multiple sub-modules.
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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KR1020117028676A KR101372968B1 (ko) | 2009-06-29 | 2010-06-17 | 스케줄 동기화 방법, 장치 및 시스템 |
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EP2451241A1 (en) | 2012-05-09 |
EP2451241A4 (en) | 2016-07-27 |
KR20120014019A (ko) | 2012-02-15 |
CN101938697A (zh) | 2011-01-05 |
KR101372968B1 (ko) | 2014-03-13 |
JP5416275B2 (ja) | 2014-02-12 |
US10015809B2 (en) | 2018-07-03 |
US20120069785A1 (en) | 2012-03-22 |
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