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 PDF

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Publication number
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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WO
WIPO (PCT)
Prior art keywords
mbms
base station
station device
synchronization data
scheduling
Prior art date
Application number
PCT/CN2010/074016
Other languages
English (en)
French (fr)
Inventor
张大钧
杨晓东
Original Assignee
大唐移动通信设备有限公司
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.)
Filing date
Publication date
Application filed by 大唐移动通信设备有限公司 filed Critical 大唐移动通信设备有限公司
Priority to KR1020117028676A priority Critical patent/KR101372968B1/ko
Priority to JP2012516496A priority patent/JP5416275B2/ja
Priority to US13/322,440 priority patent/US10015809B2/en
Priority to EP10793560.3A priority patent/EP2451241B1/en
Publication of WO2011000265A1 publication Critical patent/WO2011000265A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • H04W72/121Wireless traffic scheduling for groups of terminals or users
    • 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
    • H04W72/00Local resource management
    • H04W72/30Resource management for broadcast services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12Messaging; Mailboxes; Announcements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation 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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  • Mobile Radio Communication Systems (AREA)

Description

种同步调度方法、 装置和系统 本申请要求于 2009年 6 月 29 日提交中国专利局, 申请号为 200910087933.8, 发明名称为 "一种同步调度方法、 装置和系统" 的 中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及移动通信技术领域, 特别是涉及一种同步调度方法、 装置和系统。 背景技术
MBMS ( Multimedia Broadcast Multicast Service, 多媒体广播组 播业务)是 3GPP ( 3rd Generation Partnership Project, 第三代合作伙 伴计划) R6中定义的多媒体广播组播功能, 用于为无线小区中的用 户提供多媒体广播和组播服务。 在 LTE ( Long Term Evolution, 长期 演进) 系统中, MBMS专用频率层以及与非 MBMS业务共享的频率 层都能够提供 MBMS, 支持 MBMS的 LTE小区可以是 MBMS专用 小区, 也可以是 MBMS/单播混合小区。
其中, MBMS专用频率层是指专门用于 MBMS传输的频率层, 当一个小区被配置为 MBMS专用频率层时,该小区为 MBMS专用小 区; 当一个小区被配置为并不是专门用于 MBMS传输的频率层时, 该小区为 MBMS/单播混合小区, MBMS/单播混合小区中的单播和 MBMS业务进行协同传输, 某些时刻用于 MBMS业务传输, 其他的 时刻用于单播业务传输。 MBMS 可以进行单小区传输, 也可以进行 多小区传输, MBMS的单小区传输是指 MBMS只在一个指定小区的 覆盖范围内传输,不支持来自多小区的 MBMS传输的组合,而 MBMS 的多小区传输需要支持 MBSFN传输方式。
MBSFN ( Multicast Broadcast Single Frequency Network, 组播单 频网)是指在同一时间以相同频率在多个小区进行同步传输的方式, 可以节约频率资源, 提高频谱利用率。 MBSFN要求多个小区同时发 送完全相同的内容, UE ( User Equipment, 用户设备 )接收机可以将 多个 MBSFN小区视为一个大的小区, 不仅不会受到相邻小区传输的 小区间干扰, 而且还将受益于来自多个 MBSFN小区的信号的叠加。 MBMS专用小区和 MBMS/单播混合小区都可以采用 MBSFN传输方 式。 另外, 利用先进的 UE接收机技术还能解决多径传播的时间差问 题, 从而消除小区内干扰; 多小区同频传输所带来的分集效果还可以 解决盲区覆盖等问题, 增强接收的可靠性, 提高覆盖率。
MBMS多小区传输的技术特点包括: MBSFN区域内 MBMS的 同步传输; 支持多小区 MBMS 传输的合并; MTCH ( MBMS point-to-multipoint Traffic Channel, 多媒体广播组播业务点到多点流 量信道 )和 MCCH ( MBMS point-to-multipoint Control Channel, 多媒 体广播组播业务点到多点控制信道) 映射在用于 PTM ( Point to Multi-point, 点到多点)传输的 MCH ( Multicast Channel, 组播信道) 上; MBSFN同步区 i或可以通过 O&M ( Operation and Maintenance, 操作和维护) 系统等进行半静态配置。
MBMS的频谱效率可以达到 2bps/Hz或者更高,假设载波带宽为 20 MHz, 则每个子帧至少可以携带 40k的信息比特 bit。 为了提高对 频率资源的利用效率, 可以将统计复用应用于多流传输的系统, 通过 多个流在共享资源上进行复用获得复用增益。统计复用也适用于广播 系统, 通过统计特性可以获得增益。 对于 MBMS的多小区传输而言, 多个 MBMS可以映射到相同的 MCH上,通过为 MCH恰当地分配资 源和对多个业务在 MCH上进行动态调度获得动态复用增益。
多小区传输内容同步机制应满足以下条件: MBSFN同步区域中 的所有基站都取得了同步无线帧定时, 以便无线帧能够同时发送; 所 有基站针对同一 MBMS或 MCCH控制消息实施相同的 RLC ( Radio Link Control, 无线链路控制) / MAC ( Media Access Control, 媒体访 问控制)/ PHY( Physical,物理)层配置; EMBMS( Evolution Multimedia Broadcast Multicast Service, 演进型多媒体广播组播业务) GW ( Gate Way, 网关)将带有 SYNC同步协议的 MBMS分组广播到每个发送 业务的基站; 所有基站在指定的传输时刻在空口指定的资源上发送 MCCH消息并依据 SYNC协议发送 MBMS数据。
另夕卜, LTE 系统中还定义了 MSCH ( MBMS point-to-multipoint Scheduling Channel, 多媒体广播组播业务点到多点调度信道), 用于 确保在一定调度间隔内基站同步发送多个 MBMS数据。
发明人在实现本发明的过程中, 发现现有技术至少存在如下问 题:
现有的系统设计中,基站接收到所有业务的同步数据帧后, 没有 相应的机制进行不同业务的动态调度,从而无法确保 MBSFN区域下 所有基站之间的业务数据的同步调度, 4艮难进行多个 MBMS业务的 同步复用发送, 相应地, MSCH也无法得到同步调度。 发明内容
本发明实施例提供一种同步调度方法、 装置和系统, 以确保基站 设备之间能够对多个 MBMS进行同步调度和同步复用。
本发明实施例提出一种同步调度方法, 包括以下步骤:
基站设备获取多媒体广播组播业务 MBMS的调度顺序; 所述基站设备根据所述 MBMS的调度顺序, 对接收到的 MBMS 同步数据帧进行排序, 并按照所述排序的结果发送所述 MBMS同步 数据帧。
本发明实施例还提出一种基站设备, 其特征在于, 包括: 获取模块, 用于获取多媒体广播组播业务 MBMS的调度顺序; 接收模块, 用于接收来自核心网的 MBMS同步数据帧; 排序模块, 用于根据所述获取模块获取的 MBMS的调度顺序, 对所述接收模块接收到的 MBMS同步数据帧进行排序;
发送模块,用于按照所述排序模块的排序结果发送所述接收模块 接收到的 MBMS同步数据帧。 本发明实施例还提出一种多媒体广播组播业务协调实体 MCE , 包括:
接收模块, 用于接收来自核心网的多媒体广播组播业务 MBMS 的会话开始消息;
构造模块, 用于根据所述接收模块接收到的 MBMS的会话开始 消息构造多媒体广播组播业务点到多点控制信道 MCCH消息;
发送模块, 用于将所述构造模块构造的 MCCH消息发送到基站 设备,使所述基站设备根据所述 MCCH消息获取 MBMS的调度顺序。
本发明实施例还提出一种同步调度系统, 包括:
多媒体广播组播业务协调实体 MCE, 用于根据多媒体广播组播 业务 MBMS的会话开始消息构造多媒体广播组播业务点到多点控制 信道 MCCH消息, 将所述 MCCH消息发送到基站设备;
基站设备,用于接收来自所述 MCE的 MCCH消息,将所述 MCCH 消息包含的 MBMS承载信息列表中的 MBMS承载标识的出现顺序作 为 MBMS 的调度顺序, 根据所述 MBMS 的调度顺序, 对接收到的 MBMS 同步数据帧进行排序, 并按照所述排序的结果发送所述 MBMS同步数据帧。
本发明实施例的技术方案具有以下优点, 因为基站设备在发送 MBMS同步数据帧之前, 获取 MBMS的调度顺序, 并根据该调度顺 序对接收到的 MBMS同步数据帧进行排序, 从而确保基站设备之间 能够对多个 MBMS进行同步调度和同步复用,使系统获得 MBMS业 务的统计复用增益。 附图说明
图 1为本发明实施例一中的一种同步调度方法流程图;
图 2为本发明实施例二中的一种同步调度方法流程图;
图 3为本发明实施例三中的一种同步调度方法流程图;
图 4为本发明实施例四中的一种同步调度方法流程图;
图 5为本发明实施例四中的一种 MBMS同步数据帧的格式示意 图;
图 6为本发明实施例五中的一种基站设备结构示意图;
图 7为本发明实施例六中的一种 MCE结构示意图;
图 8为本发明实施例七中的一种同步调度系统结构示意图。
具体实施方式
本发明实施例提供的技术方案在于, 基站设备在发送 MBMS同 步数据帧之前, 获取 MBMS的调度顺序, 并根据该调度顺序对接收 到的 MBMS同步数据帧进行排序, 从而确保基站设备之间能够对多 个 MBMS进行同步调度和同步复用。
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。
如图 1所示, 为本发明实施例一中的一种同步调度方法流程图, 包括以下步骤:
步骤 101 , 基站设备获取 MBMS的调度顺序。
具体地, 基站设备可以接收来自 MCE ( MBMS Coordination Entity, 多媒体广播组播业务协调实体)的 MCCH消息, 将该 MCCH 消息包含的 MBMS承载信息列表中的 MBMS承载标识的出现顺序作 为 MBMS的调度顺序; 也可以接受 0&M系统的配置, 根据配置的 结果确定 MBMS的调度顺序, 该配置的结果包括 TMGI ( Temporary Mobile Group Identity, 临时移动组标识)或者 MBMS标识的调度顺 序; 还可以接收来自核心网的 MBMS同步数据帧, 根据该 MBMS同 步数据帧中的分组编号确定 MBMS的调度顺序。
步骤 102,基站设备根据 MBMS的调度顺序,对接收到的 MBMS 同步数据帧进行排序, 并按照排序的结果发送 MBMS同步数据帧。 基站设备接收 MBMS同步数据帧之前,需要根据 MCCH消息中 包含的 IP多播地址加入到相应的多播组。 由于 IP网络是非连接的, 基站设备接收的多个 MBMS同步数据帧将乱序到达, 因此, 基站设 备确定 MBMS的调度顺序后,可以对乱序接收到的多个 MBMS同步 数据帧进行排序, 并根据排序结果通过 MSCH对 MBMS同步数据帧 进行调度发送。
本发明实施例的技术方案具有以下优点, 因为基站设备在发送 MBMS同步数据帧之前, 获取 MBMS的调度顺序, 并根据该调度顺 序对接收到的 MBMS同步数据帧进行排序, 从而确保基站设备之间 能够对多个 MBMS进行同步调度和同步复用,使系统获得 MBMS业 务的统计复用增益。 以上实施例提供了一种同步调度方法,本发明以下实施例结合具 体的应用场景对该方法进行详细、 具体的描述。
如图 2所示, 为本发明实施例二中的一种同步调度方法流程图, 包括以下步骤:
步骤 201 , MCE根据 MBMS的会话开始消息构造 MCCH消息。 具体地, 为确保整个 MBSFN区域下所有基站设备之间能够进行 MCCH的同步, 需要由 MCE统一配置 MCCH消息的内容。 MCE可 以根据来自核心网的不同 MBMS 的会话开始消息的到达顺序组织 MCCH消息, 例如, 如果 TMGI = 2的业务对应的会话开始消息先到 达,则设置 TMGI = 2的业务的 RB id ( Radio Bear Identity,承载标识 ) 为 1 , TMGI = 1 的业务对应的会话开始消息随后到达, 则顺序设置 TMGI = 1的业务的 RB id为 2。 如表 1所示, 为 MCCH消息的组织 格式表。
MCCH消息的组织格式表
信息类型 信息描述
MCH Identity MCH标识 ...
RB信息列表 承载信息列表
>MBMS Radio Bear MBMS承载标识 Identity
>RLC 配置
>MBMS Service ID MBMS业务标识
>MBMS Session ID MBMS会话标识
>IP Multicast Address IP多播地址
PMCH参数 物理多 道
, , , 步骤 202, MCE将 MCCH消息发送到基站设备。
具体地, MCE通过 M2接口将构造的 MCCH消息传送给 MBSFN 区域下的每个基站设备。
步骤 203, 基站设备接收来自 MCE的 MCCH消息。
步骤 204 , 基站设备将 MCCH消息包含的 MBMS承载信息列表 中的 MBMS承载标识的出现顺序作为 MBMS 的调度顺序, 并根据
MCCH消息中的 IP多播地址加入相应的多播组。
其中, MCCH消息中的 MBMS承载信息列表包括 MBMS承载 标识、 MBMS业务标识、 MBMS会话标识和 IP多播地址, 基站设备 可以将 MBMS承载标识的出现顺序作为 MSCH在调度时间内调度不 同 MBMS的顺序, 还可以根据不同 MBMS业务面配置的 IP多播地 址, 加入相应的多播组。
步骤 205 , 基站设备接收来自核心网的 MBMS同步数据帧。 具体地, 基站设备加入 MBMS对应的多播组后, 开始接收来自 核心网的 MBMS业务数据广播,获取 MBMS同步数据帧,该 MBMS 同步数据帧中包含同步协议头, 即针对不同基站设备的统一发送时 刻。 步骤 206, 基站设备按照 MBMS的调度顺序对接收到的 MBMS 同步数据帧进行重新排序。
由于 IP网络是非连接的,基站设备接收的多个 MBMS对应的同 步数据帧将乱序到达, 为保证 MBSFN区域下所有基站设备之间的业 务数据能够同步发送, 基站设备可以按照步骤 204 中确定的 MBMS 的调度顺序对不同 MBMS对应的同步数据帧进行排序, 约定统一的 业务发送顺序。
步骤 207 , 基站设备按照排序的结果发送 MBMS同步数据帧。 基站设备确定不同 MBMS 的业务发送顺序后, 通过 MSCH对 MBMS同步数据帧进行调度发送。如果 MBMS发生变更, MCE可以 通过 M2接口向基站设备发送更新后的 MBMS 7 载标识顺序; 相应 地,基站设备根据更新后的 MBMS承载标识顺序确定新的业务顺序, 并在下一个调度周期按照新的业务顺序对 MBMS同步数据帧进行排 序和调度发送。
需要说明的是,本发明实施例中的方法可以根据实际需要对各个 步骤顺序进行调整。
本发明实施例的技术方案具有以下优点, 因为基站设备通过接收 到的 MCCH消息获取 MBMS的调度顺序,并根据该调度顺序对接收 到的 MBMS同步数据帧进行排序, 从而确保基站设备之间能够对多 个 MBMS进行同步调度和同步复用,使系统获得 MBMS业务的统计 复用增益。 以上实施例中, 基站设备可以通过接收到的 MCCH 消息获取 MBMS的调度顺序, MBMS的调度顺序还可以由 0&M系统配置。
如图 3所示, 为本发明实施例三中的一种同步调度方法流程图, 包括以下步骤:
步骤 301 , 0&M系统向基站设备配置 TMGI或者 MBMS标识的 调度顺序。
步骤 302, 基站设备接受 0&M系统的配置, 根据配置的结果确 定 MBMS的调度顺序。
步骤 303 ,基站设备接收来自 MCE的 MCCH消息,并根据 MCCH 消息中的 IP多播地址加入相应的多播组。
其中, MCCH消息中的 MBMS承载信息列表可以包括 MBMS 承载标识、 MBMS业务标识、 MBMS会话标识和 IP多播地址, 基站 设备可以只获取 MBMS承载信息列表中的 IP多播地址, 并根据不同 MBMS业务面配置的 IP多播地址, 加入相应的多播组。
步骤 304, 基站设备接收来自核心网的 MBMS同步数据帧。 具体地, 基站设备加入 MBMS对应的多播组后, 开始接收来自 核心网的 MBMS业务数据广播,获取 MBMS同步数据帧,该 MBMS 同步数据帧中包含同步协议头, 即针对不同基站设备的统一发送时 刻。
步骤 305, 基站设备按照 MBMS的调度顺序对接收到的 MBMS 同步数据帧进行重新排序。
由于 IP网络是非连接的,基站设备接收的多个 MBMS对应的同 步数据帧将乱序到达, 为保证 MBSFN区域下所有基站设备之间的业 务数据能够同步发送, 基站设备可以按照步骤 302 中确定的 MBMS 的调度顺序对不同 MBMS对应的同步数据帧进行排序, 约定统一的 业务发送顺序。
步骤 306 , 基站设备按照排序的结果发送 MBMS同步数据帧。 基站设备确定不同 MBMS 的业务发送顺序后, 通过 MSCH对 MBMS同步数据帧进行调度发送。 如果 MBMS发生变更, 0&M系 统可以向基站设备重新配置 TMGI或者 MBMS标识的调度顺序, 相 应地,基站设备根据重新配置的结果确定新的业务顺序, 并在下一个 调度周期按照新的业务顺序对 MBMS同步数据帧进行排序和调度发 送。
需要说明的是,本发明实施例中的方法可以根据实际需要对各个 步骤顺序进行调整。
本发明实施例的技术方案具有以下优点, 因为基站设备根据 O&M系统的配置结果获取 MBMS的调度顺序,并根据该调度顺序对 接收到的 MBMS同步数据帧进行排序, 从而确保基站设备之间能够 对多个 MBMS进行同步调度和同步复用,使系统获得 MBMS业务的 统计复用增益。 以上实施例中, 由 O&M系统配置 MBMS的调度顺序, 该调度 顺序还可以在核心网预先确定。
如图 4所示, 为本发明实施例四中的一种同步调度方法流程图, 包括以下步骤:
步骤 401 ,基站设备接收来自 MCE的 MCCH消息,并根据 MCCH 消息中的 IP多播地址加入相应的多播组。
其中, MCCH消息中的 MBMS承载信息列表可以包括 MBMS 承载标识、 MBMS业务标识、 MBMS会话标识和 IP多播地址, 基站 设备可以只获取 MBMS承载信息列表中的 IP多播地址, 并根据不同 MBMS业务面配置的 IP多播地址, 加入相应的多播组。
步骤 402 , 核心网对 MBMS进行排序, 将 MBMS的分组编号添 加到对应的 MBMS同步数据帧。
具体地, 核心网预先对 MBMS进行排序, 并将排序后的 MBMS 的分组编号添加到对应的 MBMS同步数据帧中。 如图 5所示, 为本 发明实施例四中的一种 MBMS同步数据帧的格式示意图。
其中, Timestamp为 MBMS的空口发送绝对时间戳, Packet Nr 为所有 MBMS排序后的分组编号, Elapsed Octet ctr为已发送的字节 数。
步骤 403, 核心网将 MBMS同步数据帧发送到基站设备。
步骤 404, 基站设备接收来自核心网的 MBMS 同步数据帧, 并 根据 MBMS同步数据帧中的分组编号确定 MBMS的调度顺序。
具体地, 基站设备加入 MBMS对应的多播组后, 开始接收来自 核心网的 MBMS业务数据广播,获取 MBMS同步数据帧,该 MBMS 同步数据帧中包含同步协议头, 即针对不同基站设备的统一发送时 刻。
步骤 405, 基站设备按照 MBMS的调度顺序对接收到的 MBMS 同步数据帧进行重新排序。
由于 IP网络是非连接的,基站设备接收的多个 MBMS对应的同 步数据帧将乱序到达, 为保证 MBSFN区域下所有基站设备之间的业 务数据能够同步发送, 基站设备可以按照步骤 404 中确定的 MBMS 的调度顺序对不同 MBMS对应的同步数据帧进行排序, 约定统一的 业务发送顺序。
步骤 406 , 基站设备按照排序的结果发送 MBMS同步数据帧。 基站设备确定不同 MBMS 的业务发送顺序后, 通过 MSCH对 MBMS同步数据帧进行调度发送。
需要说明的是,本发明实施例中的方法可以根据实际需要对各个 步骤顺序进行调整。
本发明实施例的技术方案具有以下优点, 因为基站设备根据 MBMS同步数据帧中的分组编号获取 MBMS的调度顺序, 并根据该 调度顺序对接收到的 MBMS同步数据帧进行排序, 从而确保基站设 备之间能够对多个 MBMS 进行同步调度和同步复用, 使系统获得 MBMS业务的统计复用增益。 本发明以上实施例提供了一种同步调度方法和具体的应用场景, 如图 6所示, 为本发明实施例五中的一种基站设备结构示意图, 包括:
获取模块 610, 用于获取 MBMS的调度顺序。
上述获取模块 610是以上所述基站设备中负责获取 MBMS的调 度顺序的部分, 可以是软件、 硬件或两者的结合。
接收模块 620 , 用于接收来自核心网的 MBMS同步数据帧。 具体地, 获取模块 610可以将接收模块 620接收到的 MCCH消 息中包含的 MBMS承载标识的出现顺序, 作为 MBMS的调度顺序; 也可以接受 O&M系统的配置, 根据配置的结果确定 MBMS的调度 顺序, 该配置的结果包括 TMGI或者 MBMS标识的调度顺序; 还可 以接收来自核心网的 MBMS同步数据帧,根据该 MBMS同步数据帧 中的分组编号确定 MBMS的调度顺序。
上述接收模块 620 是以上所述基站设备中负责接收来自核心网 的 MBMS同步数据帧的部分, 可以是软件、 硬件或两者的结合。
排序模块 630, 用于根据获取模块 610获取的 MBMS的调度顺 序, 对接收模块 620接收到的 MBMS同步数据帧进行排序。
上述排序模块 630是以上所述基站设备中负责对 MBMS同步数 据帧进行排序的部分, 可以是软件、 硬件或两者的结合。
发送模块 640, 用于按照排序模块 630的排序结果发送接收模块 620接收到的 MBMS同步数据帧。
具体地, 接收模块 620接收 MBMS同步数据帧之前, 需要根据 MCCH消息中包含的 IP多播地址加入到相应的多播组。由于 IP网络 是非连接的, 接收模块 620接收的多个 MBMS同步数据帧将乱序到 达, 因此, 排序模块 630可以根据获取模块 610确定的 MBMS的调 度顺序, 对乱序接收到的多个 MBMS同步数据帧进行排序, 发送模 块 640根据排序结果通过 MSCH对 MBMS同步数据帧进行调度发送。
上述发送模块 640是以上所述基站设备中负责发送 MBMS同步 数据帧的部分, 可以是软件、 硬件或两者的结合。
上述获取模块 610, 具体用于接收来自 MCE的 MCCH消息, 将 MCCH消息包含的 MBMS 7 载信息列表中的 MBMS 载标识的出 现顺序作为 MBMS的调度顺序。
其中, MCCH消息中的 MBMS承载信息列表包括 MBMS承载 标识、 MBMS业务标识、 MBMS会话标识和 IP多播地址, 获取模块 610可以将 MBMS承载标识的出现顺序作为 MSCH在调度时间内调 度不同 MBMS的顺序, 还可以根据不同 MBMS业务面配置的 IP多 播地址, 加入相应的多播组。
上述获取模块 610, 还具体用于接受 0&M系统的配置, 根据配 置的结果确定 MBMS 的调度顺序, 该配置的结果包括 TMGI 或者 MBMS标识的调度顺序。
上述获取模块 610 , 还具体用于根据接收模块 620 接收到的 MBMS同步数据帧中的分组编号确定 MBMS的调度顺序。
本发明实施例的技术方案具有以下优点, 因为基站设备在发送 MBMS同步数据帧之前, 获取 MBMS的调度顺序, 并根据该调度顺 序对接收到的 MBMS同步数据帧进行排序, 从而确保基站设备之间 能够对多个 MBMS进行同步调度和同步复用,使系统获得 MBMS业 务的统计复用增益。 如图 7所示, 为本发明实施例六中的一种 MCE结构示意图, 包 括:
接收模块 710, 用于接收来自核心网的 MBMS的会话开始消息。 上述接收模块 710 是以上所述 MCE 中负责接收来自核心网的 MBMS的会话开始消息的部分, 可以是软件、 硬件或两者的结合。
构造模块 720, 用于根据接收模块 710接收到的 MBMS的会话 开始消息构造 MCCH消息。
为确保整个 MBSFN 区域下所有基站设备之间能够进行 MCCH 的同步, 构造模块 720统一配置 MCCH消息的内容。 具体地, 构造 模块 720可以根据来自核心网的不同 MBMS的会话开始消息的到达 顺序组织 MCCH消息, 例如, 如果 TMGI = 2的业务对应的会话开始 消息先到达, 则设置 TMGI = 2的业务的 RB id ( Radio Bear Identity, 承载标识)为 1 , TMGI = 1的业务对应的会话开始消息随后到达, 则 顺序设置 TMGI = 1的业务的 RB id为 2。
上述构造模块 720是以上所述 MCE中负责构造 MCCH消息的部 分, 可以是软件、 硬件或两者的结合。
发送模块 730, 用于将构造模块 720构造的 MCCH消息发送到 基站设备, 使基站设备根据 MCCH消息获取 MBMS的调度顺序。
具体地,发送模块 730通过 M2接口将 MCCH消息传送给 MBSFN 区域下的每个基站设备。
上述 MCCH消息包含 MBMS承载信息列表, 该 MBMS承载信 息列表包括 MBMS 7 载标识,该 MBMS 载标识的出现顺序用于作 为 MBMS的调度顺序。
上述发送模块 730是以上所述 MCE中负责将 MCCH消息发送到 基站设备的部分, 可以是软件、 硬件或两者的结合。
基站设备接收来自 MCE的 MCCH消息, 将该 MCCH消息包含 的 MBMS承载信息列表中的 MBMS承载标识的出现顺序作为 MBMS 的调度顺序,并根据 MCCH消息中的 IP多播地址加入相应的多播组。
其中, MCCH消息中的 MBMS承载信息列表包括 MBMS承载 标识、 MBMS业务标识、 MBMS会话标识和 IP多播地址, 基站设备 可以将 MBMS承载标识的出现顺序作为 MSCH在调度时间内调度不 同 MBMS的顺序, 还可以根据不同 MBMS业务面配置的 IP多播地 址, 加入相应的多播组。
基站设备加入 MBMS对应的多播组后, 开始接收来自核心网的 MBMS业务数据广播, 获取 MBMS同步数据帧, 该 MBMS同步数 据帧中包含同步协议头, 即针对不同基站设备的统一发送时刻。
由于 IP网络是非连接的,基站设备接收的多个 MBMS对应的同 步数据帧将乱序到达, 为保证 MBSFN区域下所有基站设备之间的业 务数据能够同步发送, 基站设备可以按照确定的 MBMS的调度顺序 对不同 MBMS对应的同步数据帧进行排序, 约定统一的业务发送顺 序。
基站设备确定不同 MBMS 的业务发送顺序后, 通过 MSCH对 MBMS同步数据帧进行调度发送。 如果 MBMS发生变更, 发送模块 730可以通过 M2接口向基站设备发送更新后的 MBMS承载标识顺 序, 相应地, 基站设备根据更新后的 MBMS 7|载标识顺序确定新的 业务顺序, 并在下一个调度周期按照新的业务顺序对 MBMS同步数 据帧进行排序和调度发送。
本发明实施例的技术方案具有以下优点, 因为基站设备通过接收 到的 MCCH消息获取 MBMS的调度顺序,并根据该调度顺序对接收 到的 MBMS同步数据帧进行排序, 从而确保基站设备之间能够对多 个 MBMS进行同步调度和同步复用,使系统获得 MBMS业务的统计 复用增益。 如图 8所示,为本发明实施例七中的一种同步调度系统结构示意 图, 包括:
MCE 810, 用于根据 MBMS的会话开始消息构造 MCCH消息, 将该 MCCH消息发送到基站设备 820。
具体地, 为确保整个 MBSFN区域下所有基站设备之间能够进行 MCCH的同步,需要由 MCE 810统一配置 MCCH消息的内容。 MCE 810可以根据来自核心网的不同 MBMS的会话开始消息的到达顺序 组织 MCCH消息, 例如, 如果 TMGI = 2的业务对应的会话开始消息 先到达, 则设置 TMGI = 2的业务的 RB id为 1 , TMGI = 1的业务对 应的会话开始消息随后到达, 则顺序设置 TMGI = 1的业务的 RB id 为 2。
MCE 810通过 M2接口将构造的 MCCH消息传送给 MBSFN区 域下的每个基站设备。
基站设备 820, 用于接收来自 MCE 810的 MCCH消息, 将该 MCCH消息包含的 MBMS 7 载信息列表中的 MBMS 载标识的出 现顺序作为 MBMS的调度顺序, 根据该 MBMS的调度顺序, 对接收 到的 MBMS同步数据帧进行排序,并按照排序的结果发送 MBMS同 步数据帧。
其中, MCCH消息中的 MBMS承载信息列表包括 MBMS承载 标识、 MBMS业务标识、 MBMS会话标识和 IP多播地址, 基站设备 820可以将 MBMS承载标识的出现顺序作为 MSCH在调度时间内调 度不同 MBMS的顺序, 还可以根据不同 MBMS业务面配置的 IP多 播地址, 加入相应的多播组。
基站设备 820加入 MBMS对应的多播组后, 开始接收来自核心 网的 MBMS业务数据广播, 获取 MBMS同步数据帧, 该 MBMS同 步数据帧中包含同步协议头, 即针对不同基站设备的统一发送时刻。
由于 IP网络是非连接的,基站设备 820接收的多个 MBMS对应 的同步数据帧将乱序到达, 为保证 MBSFN区域下所有基站设备之间 的业务数据能够同步发送, 基站设备 820可以按照确定的 MBMS的 调度顺序对不同 MBMS对应的同步数据帧进行排序, 约定统一的业 务发送顺序。
基站设备 820确定不同 MBMS的业务发送顺序后, 通过 MSCH 对 MBMS同步数据帧进行调度发送。如果 MBMS发生变更, MCE 810 可以通过 M2接口向基站设备 820发送更新后的 MBMS承载标识顺 序, 相应地, 基站设备 820根据更新后的 MBMS承载标识顺序确定 新的业务顺序, 并在下一个调度周期按照新的业务顺序对 MBMS同 步数据帧进行排序和调度发送。
本发明实施例的技术方案具有以下优点, 因为基站设备 820通过 接收到的 MCCH消息获取 MBMS的调度顺序,并根据该调度顺序对 接收到的 MBMS同步数据帧进行排序, 从而确保基站设备之间能够 对多个 MBMS进行同步调度和同步复用,使系统获得 MBMS业务的 统计复用增益。
通过以上的实施方式的描述,本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平台的方式来实现, 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一个存储介质 中, 包括若干指令用以使得一台终端设备(可以是手机,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。
以上所述仅是本发明的优选实施方式, 应当指出, 对于本技术领 域的普通技术人员来说, 在不脱离本发明原理的前提下, 还可以做出 若干改进和润饰, 这些改进和润饰也应视本发明的保护范围。
本领域技术人员可以理解实施例中的装置中的模块可以按照实 施例描述进行分布于实施例的装置中,也可以进行相应变化位于不同 于本实施例的一个或多个装置中。 上述实施例的模块可以集成于一 体, 也可以分离部署, 可以合并为一个模块, 也可以进一步拆分成多 个子模块。
上述本发明实施例序号仅仅为了描述, 不代表实施例的优劣。 以上公开的仅为本发明的几个具体实施例, 但是, 本发明并非局 限于此,任何本领域的技术人员能思之的变化都应落入本发明的保护 范围。

Claims

权利要求
1、 一种同步调度方法, 其特征在于, 包括以下步骤:
基站设备获取多媒体广播组播业务 MBMS的调度顺序; 所述基站设备根据所述 MBMS的调度顺序, 对接收到的 MBMS 同步数据帧进行排序, 并按照所述排序的结果发送所述 MBMS同步 数据帧。
2、 如权利要求 1所述的方法, 其特征在于, 所述基站设备获取 MBMS的调度顺序, 包括:
所述基站设备接收来自多媒体广播组播业务协调实体 MCE的多 媒体广播组播业务点到多点控制信道 MCCH消息;
所述基站设备将所述 MCCH消息包含的 MBMS承载信息列表中 的 MBMS承载标识的出现顺序作为 MBMS的调度顺序。
3、 如权利要求 2所述的方法, 其特征在于, 所述基站设备接收 来自 MCE的 MCCH消息之前, 还包括:
所述 MCE根据 MBMS的会话开始消息构造所述 MCCH消息; 所述 MCE将所述 MCCH消息发送到所述基站设备。
4、 如权利要求 1所述的方法, 其特征在于, 所述基站设备获取 MBMS的调度顺序, 包括:
所述基站设备接受操作和维护 0&M系统的配置,根据所述配置 的结果确定 MBMS的调度顺序, 所述配置的结果包括临时移动组标 识 TMGI或者 MBMS标识的调度顺序。
5、 如权利要求 1所述的方法, 其特征在于, 所述基站设备获取 MBMS的调度顺序, 包括:
所述基站设备接收来自核心网的 MBMS同步数据帧, 根据所述 MBMS同步数据帧中的分组编号确定 MBMS的调度顺序。
6、 如权利要求 5所述的方法, 其特征在于, 所述基站设备接收 来自核心网的 MBMS同步数据帧之前, 还包括:
所述核心网对 MBMS进行排序,将 MBMS的分组编号添加到对 应的 MBMS同步数据帧;
所述核心网将所述 MBMS同步数据帧发送到所述基站设备。
7、 一种基站设备, 其特征在于, 包括:
获取模块, 用于获取多媒体广播组播业务 MBMS的调度顺序; 接收模块, 用于接收来自核心网的 MBMS同步数据帧; 排序模块, 用于根据所述获取模块获取的 MBMS的调度顺序, 对所述接收模块接收到的 MBMS同步数据帧进行排序;
发送模块,用于按照所述排序模块的排序结果发送所述接收模块 接收到的 MBMS同步数据帧。
8、 如权利要求 7所述的基站设备, 其特征在于,
所述获取模块,具体用于接收来自多媒体广播组播业务协调实体 MCE的多媒体广播组播业务点到多点控制信道 MCCH消息, 将所述 MCCH消息包含的 MBMS承载信息列表中的 MBMS承载标识的出 现顺序作为 MBMS的调度顺序。
9、 如权利要求 7所述的基站设备, 其特征在于,
所述获取模块, 具体用于接受操作和维护 0&M系统的配置, 根 据所述配置的结果确定 MBMS的调度顺序, 所述配置的结果包括临 时移动组标识 TMGI或者 MBMS标识的调度顺序。
10、 如权利要求 7所述的基站设备, 其特征在于,
所述获取模块, 具体用于根据所述接收模块接收到的 MBMS同 步数据帧中的分组编号确定 MBMS的调度顺序。
11、 一种多媒体广播组播业务协调实体 MCE, 其特征在于, 包 括:
接收模块, 用于接收来自核心网的多媒体广播组播业务 MBMS 的会话开始消息;
构造模块, 用于根据所述接收模块接收到的 MBMS的会话开始 消息构造多媒体广播组播业务点到多点控制信道 MCCH消息; 发送模块, 用于将所述构造模块构造的 MCCH消息发送到基站 设备,使所述基站设备根据所述 MCCH消息获取 MBMS的调度顺序。
12、 如权利要求 11所述的 MCE, 其特征在于, 所述 MCCH消 息包含 MBMS承载信息列表,所述 MBMS承载信息列表包括 MBMS 承载标识,所述 MBMS承载标识的出现顺序用于作为 MBMS的调度 顺序。
13、 一种同步调度系统, 其特征在于, 包括:
多媒体广播组播业务协调实体 MCE, 用于根据多媒体广播组播 业务 MBMS的会话开始消息构造多媒体广播组播业务点到多点控制 信道 MCCH消息, 将所述 MCCH消息发送到基站设备;
基站设备,用于接收来自所述 MCE的 MCCH消息,将所述 MCCH 消息包含的 MBMS承载信息列表中的 MBMS承载标识的出现顺序作 为 MBMS 的调度顺序, 根据所述 MBMS 的调度顺序, 对接收到的 MBMS 同步数据帧进行排序, 并按照所述排序的结果发送所述 MBMS同步数据帧。
PCT/CN2010/074016 2009-06-29 2010-06-17 一种同步调度方法、装置和系统 WO2011000265A1 (zh)

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CN101938697A (zh) 2011-01-05
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