WO2017070838A1 - 资源调度方法、基站、调度器、节目源服务器和系统 - Google Patents

资源调度方法、基站、调度器、节目源服务器和系统 Download PDF

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Publication number
WO2017070838A1
WO2017070838A1 PCT/CN2015/092939 CN2015092939W WO2017070838A1 WO 2017070838 A1 WO2017070838 A1 WO 2017070838A1 CN 2015092939 W CN2015092939 W CN 2015092939W WO 2017070838 A1 WO2017070838 A1 WO 2017070838A1
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Prior art keywords
scheduler
program source
request message
session start
start request
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PCT/CN2015/092939
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English (en)
French (fr)
Inventor
李伽
姚建辉
张军
严凯
Original Assignee
华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201580071035.7A priority Critical patent/CN107113802A/zh
Priority to PCT/CN2015/092939 priority patent/WO2017070838A1/zh
Publication of WO2017070838A1 publication Critical patent/WO2017070838A1/zh
Priority to US15/965,058 priority patent/US10440681B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1863—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast comprising mechanisms for improved reliability, e.g. status reports
    • H04L12/1877—Measures taken prior to transmission
    • 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
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a resource scheduling method, a base station, a scheduler, a program source server, and a system.
  • eMBMS evolved multimedia broadcast multicast service
  • LTE long term evolution
  • the multiple network elements include a broadcast-multicast service centre (BM-SC) and a multimedia broadcast multicast service gateway.
  • MGW multimedia broadcast multicast service gateway
  • MME mobility management entity
  • MCE multi-cell/multicast coordination entity
  • eNodeB evolved universal terrestrial radio access network node B
  • the existing resource scheduling method because the signaling process is long, there are many network elements passing through, from BM-SC to MBMS-GW, MME to MCE, eNodeB, and the upper-level network element only knows the execution of the next-level network element. As a result, the final execution result of the broadcast program is not known, and thus the utilization rate of the broadcast channel resource is low.
  • Embodiments of the present invention provide a resource scheduling method, a base station, a scheduler, a program source server, and a system to improve utilization of broadcast channel resources.
  • a resource scheduling method is provided, where the method is applied to an eMBMS, and the method includes:
  • the scheduler receives a session start request message sent by the program source server, where the session start request message carries a service area identity (SAI) corresponding to the service area of the program source;
  • SAI service area identity
  • IP internet protocol
  • the method before the scheduler receives the session start request message sent by the program source server, the method further includes:
  • the scheduler receives the MA status request message sent by the program source server, where the MA status request message carries the SAI;
  • the program source server Sending a MA status response message to the program source server, where the MA status response message carries information about the status of the MA, so that the program source server starts to select a unicast mode or a broadcast mode according to the state of the MA. a conversation.
  • the scheduler receives the session start request message sent by the program source server, including:
  • the scheduler receives a session start request message sent by the program source server, and the session start request message is used to initiate a session in a broadcast manner;
  • the method further includes:
  • the MA air interface resource allocation is performed for at least one program that is admitted and mapped successfully.
  • the scheduler receives the session start request message sent by the program source server, including:
  • the scheduler receives a session start request message sent by the program source server through the broadcast multicast service center.
  • a resource scheduling method is provided, where the method is applied to an eMBMS, and the method includes:
  • the program source server sends a session start request message to the scheduler, where the session start request message carries the SAI corresponding to the program source, so that the scheduler allocates the MA resource for the program source according to the SAI.
  • the method before the program source server sends a session start request message to the scheduler, the method further includes:
  • the program source server sends an MA status request message to the scheduler, where the MA status request message carries the SAI;
  • the scheduler And receiving, by the scheduler, an MA status response message, where the MA status response message carries information about a status of the MA corresponding to the SAI, where the status is used to reflect resource usage of the MA;
  • the program source server starts a session by selecting a unicast mode or a broadcast mode according to the state of the MA.
  • the program source server selects a unicast mode or a broadcast mode according to the state of the MA. Start a session, including:
  • the status of the MA reflects that the resource usage of the MA meets a preset condition, and the program on-demand rate of the MA exceeds a preset threshold, selecting to initiate a session in a broadcast manner.
  • the program source server sends a session start request message to the scheduler, including:
  • the program source server sends a session start request message to the scheduler through the broadcast multicast service center.
  • a resource scheduling method is provided, where the method is applied to an eMBMS, and the method includes:
  • the base station receives a session start request message sent by the scheduler, where the session start request message carries the SAI corresponding to the program source;
  • a fourth aspect provides a scheduler, where the scheduler is applied to an eMBMS, where the scheduler includes: a receiving unit, a processing unit, and a sending unit;
  • the receiving unit is configured to receive a session start request message sent by a program source server, where the session start request message carries a SAI corresponding to the program source;
  • the sending unit is configured to send, according to the SAI received by the receiving unit, the session start request message to a base station corresponding to the SAI;
  • the receiving unit is further configured to receive a session start response message sent by the base station according to the session start request message;
  • the processing unit is configured to join the base station to an IP multicast group according to a session start response message received by the receiving unit;
  • the sending unit is further configured to send a resource scheduling message to the base station, where the resource scheduling message carries information about the MA resource allocated for the program source;
  • the receiving unit is further configured to receive a resource scheduling response message sent by the base station according to the resource scheduling message.
  • the receiving unit is further configured to: before receiving the session start request message sent by the program source server, receive the MA status sent by the program source server a request message, where the MA status request message carries the SAI;
  • the processing unit is further configured to search, according to the SAI received by the receiving unit, a state of an MA corresponding to the SAI, where the state is used to reflect a resource usage of the MA;
  • the sending unit is further configured to send an MA status response message to the program source server, where the MA status response message carries information about the status of the MA, so that the program source server is based on the status of the MA. Start a session by selecting unicast mode or broadcast mode.
  • the receiving unit is configured to receive a session start request message sent by a program source server, where the session starts The request message is used to initiate a session in a broadcast manner;
  • the processing unit is further configured to perform program admission and mapping according to a priority of a program to be broadcasted by the program source and a resource usage of the MA, before the sending unit sends a resource scheduling message to the base station;
  • the MA air interface resource allocation is performed for at least one program that is admitted and mapped successfully.
  • the receiving unit is configured to receive a session start request message sent by the program source server by using a broadcast multicast service center.
  • a program source server is provided, where the program source server is applied to an eMBMS, and the program source server includes: a sending unit;
  • the sending unit is configured to send a session start request message to the scheduler, where the session start request message carries the SAI corresponding to the program source, so that the scheduler allocates the MA resource for the program source according to the SAI.
  • the sending unit is further configured to send the MA state to the scheduler before sending the session start request message to the scheduler And requesting, the MA status request message carries the SAI;
  • the program source server further includes: a receiving unit and a processing unit;
  • the receiving unit is configured to receive an MA status response message sent by the scheduler, where the MA status response message carries information about a status of an MA corresponding to the SAI, where the status is used to reflect resource usage of the MA happening;
  • the processing unit is configured to start a session by selecting a unicast mode or a broadcast mode according to the state of the MA received by the receiving unit.
  • the processing unit is configured to: when the status of the MA received by the receiving unit reflects the MA The resource usage condition satisfies a preset condition, and when the program on-demand rate under the MA exceeds a preset threshold, selecting to initiate a session in a broadcast manner.
  • the sending unit is specifically configured to send a session start request message to the scheduler by using a broadcast multicast service center.
  • a sixth aspect provides a base station, where the base station is applied to an eMBMS, where the base station includes: a sending unit and a receiving unit;
  • the receiving unit is configured to receive a session start request message sent by a scheduler, where the session start request message carries a SAI corresponding to a program source;
  • the sending unit is configured to send a session start response message to the scheduler according to a session start request message received by the receiving unit;
  • the receiving unit is further configured to receive a resource scheduling message sent by the scheduler, where the resource scheduling message carries information about an MA resource allocated for the program source;
  • the sending unit is further configured to send a resource scheduling response message to the scheduler according to the resource scheduling message received by the receiving unit.
  • a scheduler is provided, the scheduler being applied to an eMBMS, the scheduler comprising: a memory, a receiver, a processor, and a transmitter;
  • the memory is configured to store program instructions
  • the processor is configured to perform the following operations according to program instructions stored in the memory:
  • the processor is further configured to perform the following operations according to the program instructions stored in the memory:
  • the transmitter Sending, by the transmitter, the MA status response message to the program source server, where the MA status response message carries information about the status of the MA, so that the program source server selects unicast according to the status of the MA. Start a session in mode or broadcast mode.
  • the processor performs an operation of receiving, by the receiver, a session start request message sent by a program source server, include:
  • the receiver Receiving, by the receiver, a session start request message sent by a program source server, the session The start request message is used to initiate a session in a broadcast manner;
  • the processor is further configured to perform the following operations according to the program instructions stored in the memory:
  • program admission and mapping are performed according to the priority of the program to be broadcasted by the program source and the resource usage of the MA; for the admission and mapping are successful At least one program performs MA air interface resource allocation.
  • the performing, by the processor, the operation of receiving the session start request message sent by the program source server by using the receiver includes:
  • a session start request message transmitted by the program source server through the broadcast multicast service center is received by the receiver.
  • a program source server is provided, where the program source server is applied to an eMBMS, where the program source server includes: a memory, a processor, and a communication interface;
  • the memory is configured to store program instructions
  • the processor is configured to perform the following operations according to program instructions stored in the memory:
  • the processor is further configured to perform the following operations according to the program instructions stored in the memory:
  • an MA status response message sent by the scheduler where the MA status response message carries information about a status of the MA corresponding to the SAI, where the status is used to reflect resource usage of the MA;
  • the processor performs the operation of starting a session by using the unicast mode or the broadcast mode according to the state of the received MA, including:
  • the program on-demand rate of the MA exceeds a preset threshold, it is selected to initiate a session in a broadcast manner.
  • a session start request message is sent to the scheduler through the broadcast multicast service center.
  • a ninth aspect provides a base station, where the base station is applied to an eMBMS, where the base station includes: a memory, a processor, a transmitter, and a receiver;
  • the memory is configured to store program instructions
  • the processor is configured to perform the following operations according to program instructions stored in the memory:
  • a tenth aspect provides a scheduling system, where the scheduling system is applied to an eMBMS, where the scheduling system includes: a scheduler, a program source server, and a base station;
  • the scheduler is configured to receive a session start request message sent by the program source server, where the session start request message carries an SAI corresponding to a program source, and send the session to a base station corresponding to the SAI according to the SAI. And starting a request message; receiving a session start response message sent by the base station according to the session start request message; adding the base station to an IP multicast group according to the session start response message; and sending a resource scheduling message to the base station, where The resource scheduling message is carried in the message Information about the MA resource allocated by the program source; receiving a resource scheduling response message sent by the base station according to the resource scheduling message;
  • the program source server is configured to send a session start request message to the scheduler, where the session start request message carries a SAI corresponding to the program source, so that the scheduler allocates the program source according to the SAI.
  • MA resources
  • the base station is configured to receive a session start request message sent by the scheduler, where the session start request message carries an SAI corresponding to a program source, and send a session start response message to the scheduler according to the session start request message; And receiving, by the scheduler, a resource scheduling message, where the resource scheduling message carries information about the MA resource allocated for the program source, and sends a resource scheduling response message to the scheduler according to the resource scheduling message.
  • the embodiment of the present invention provides a resource scheduling method, which is applied to an eMBMS, where the method only involves a scheduler, a program source server, and a base station.
  • a clear mapping between the program source and the air interface broadcast channel is provided. The relationship can achieve the purpose of full utilization of the air interface broadcast channel and accurate delivery of the program, and effectively improve the utilization of the broadcast channel resources.
  • FIG. 1 is a schematic diagram of a network architecture based on a resource scheduling method according to an embodiment of the present disclosure
  • FIG. 2 is a functional block diagram of a scheduler according to an embodiment of the present invention.
  • FIG. 3 is a signal flow diagram of a resource scheduling method according to Embodiment 1 of the present invention.
  • FIG. 4 is a signal flow diagram of a resource scheduling method according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic diagram of a scheduler interface according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a scheduler according to Embodiment 3 of the present invention.
  • FIG. 7 is a schematic structural diagram of a program source server according to Embodiment 4 of the present invention.
  • FIG. 8 is a structural diagram of a base station according to Embodiment 5 of the present invention.
  • FIG. 9 is a structural diagram of a scheduler according to Embodiment 6 of the present invention.
  • FIG. 10 is a structural diagram of a program source server according to Embodiment 7 of the present invention.
  • FIG. 11 is a structural diagram of a base station according to Embodiment 8 of the present invention.
  • FIG. 12 is a structural diagram of a scheduling system according to Embodiment 9 of the present invention.
  • FIG. 1 is a schematic diagram of a network architecture based on a resource scheduling method according to an embodiment of the present invention.
  • a scheduler is newly added, which is used for resource scheduling of the broadcast service, and is not used for resource scheduling of the unicast service, and has no impact on the unicast service.
  • the scheduler provides the M2 and M1 interface functions defined by the 3rd generation partnership project (3GPP) standard protocol to the eNodeB, wherein the M2 interface is a control plane interface, and is used for session message and scheduling message interaction; Used as a business interface for business data transmission.
  • 3GPP 3rd generation partnership project
  • the scheduler provides a custom application programming interface (API) to the program source server, and the API can be carried on a hypertext transfer protocol (HTTP) or a stream control transport protocol (stream). Control transmission protocol, SCTP).
  • API application programming interface
  • the program source server can provide various application services to the user through the Internet, so the program source server can be referred to as an application server.
  • the scheduler provides an operation and maintenance interface for the operation and maintenance personnel to add broadcast program information on the scheduler by using commands on the maintenance device.
  • the scheduler schedules the content of the program source to the corresponding multimedia broadcast multicast service single frequency network area (MA) broadcast through the mapping between the program source and the air interface resource, and finally broadcasts to the LTE air interface eMBMS. End customer.
  • MA multimedia broadcast multicast service single frequency network area
  • the scheduler By introducing a scheduler in the existing network architecture, it is possible to implement the resource scheduling of the broadcast service only by signaling interaction between the program source server, the scheduler, and the three network elements of the eNodeB.
  • the signaling process is effectively shortened, and the passed network elements are reduced.
  • the program source and the air interface broadcast channel have a clear mapping relationship, which can achieve the purpose of fully utilizing the air interface broadcast channel and accurately transmitting the program, thereby effectively improving the network element. Utilization of broadcast channel resources.
  • the scheduler is configured to receive program management information sent by an operation management and maintenance (OAM) device through an operation and maintenance interface, and add or delete broadcast program information according to the program management information; the scheduler module is further used to pass the API.
  • OAM operation management and maintenance
  • the MA resource allocation module is configured to allocate a corresponding MA resource to the program source server according to the instruction of the scheduler module, and send the information of the allocated MA resource to the eNodeB (abbreviated as an eNB) through the M2 interface.
  • the program announcement module is configured to announce the program information to be broadcast to the multicast transmission module.
  • the program-to-MA mapping module is configured to acquire program data from the program source server, map the program data to the MA resource allocated to the program source server, and send the mapping relationship to the multicast transmission module.
  • the multicast transmission module is configured to receive a mapping relationship between the program data and the MA resource from the program to the MA mapping module, and send the program data to the eNodeB through the M1 interface according to the mapping relationship.
  • the program source server is responsible for user information management, and may initiate a program broadcast request to the scheduler according to the user's on-demand request, and the scheduler performs broadcast resource scheduling according to the program broadcast request.
  • the broadcast of the program may be initiated by the OAM in addition to the program source server.
  • the broadcaster information may be added to the scheduler by the administrator through the OAM.
  • FIG. 3 is a signal flow diagram of a resource scheduling method according to Embodiment 1 of the present invention.
  • the method is used in eMBMS, through user equipment (UE), eNodeB, eMBMS scheduler, and program source.
  • the signaling interaction between the network elements of the server implements resource scheduling of broadcast resources, and the UE may also be referred to as an application client (APP client), where the scheduler is used to implement BM-SC and MBMS-GW in the existing network architecture.
  • APP client application client
  • the network element function of the MME and the MCE, the method includes:
  • Step 301 The program source server acquires a user name and a password from the UE, and performs user authentication according to the user name and the password.
  • Step 302 The program source server receives the location information reported by the UE.
  • the location information may specifically be a cell identifier (CellID).
  • CellID cell identifier
  • Step 303 The program source server receives a program acquisition/on-demand request message sent by the UE.
  • the request message may include information such as a program name, a program play time, and the like.
  • some users belong to the subscription user of program source 1, some users belong to the subscription user of program source 2, and the APP corresponding to the program source is installed on the user equipment, and the user logs in to the program source on-demand program through the user equipment.
  • the current location information of the UE is reported, and the program source server performs authentication, charging, and information management on the subscribed user.
  • Step 304 The scheduler receives the username and password sent by the program source server, and authenticates the program source server according to the username and password.
  • the program source server belongs to a legitimate user who has the right to send a program on the eMBMS, and the user authentication and charging function may be performed on the eMBMS scheduler or by the operator service support system (BSS).
  • Each program source corresponds to one or more SAs, identified by SAI.
  • Step 305 The scheduler receives the MA status request message sent by the program source server, where the MA status request message carries the identifier SAI of the service area corresponding to the program source.
  • the program source server is a custom API interface between the scheduler and the program source server.
  • the program source server queries the scheduler for the eMBMS broadcast resource through the API interface, and the scheduler returns broadcast resource information to the program source server, where the broadcast resource information includes but is not limited to the MA broadcast total. Bandwidth, remaining bandwidth, cell list, etc.
  • the scheduler After receiving the MA status request message, the scheduler can search for the corresponding SAI according to the SAI. Status of the MA, which is used to reflect the resource usage of the MA.
  • the SA is a broadcast service area, which is a service concept, such as a certain area of a certain city, or a campus;
  • the MA is a base station networking area, and the base stations in this area are strictly time synchronized, according to network planning.
  • MA some base stations belong to MA1, some base stations belong to MA2, and MA planning data is saved on the scheduler.
  • Step 306 The scheduler sends an MA status response message to the program source server, where the MA status response message carries information about the status of the MA corresponding to the SAI.
  • Step 307 The program source server starts a session by selecting a unicast mode or a broadcast mode according to the state of the MA.
  • the state of the MA reflects that the resource usage of the MA meets the preset condition, and the program on-demand rate of the MA exceeds a preset threshold, selecting to initiate a session in a broadcast manner.
  • the program source server can directly initiate a broadcast request when a certain program on-demand rate exceeds a certain number under a certain MA.
  • Step 301 to step 307 are optional steps, and the program source server may directly initiate a program broadcast request to the scheduler when the program on demand request of the user is not obtained.
  • Step 308 the program source server sends a session start request message to the scheduler.
  • the session start request message carries the identifier SAI of the service area corresponding to the program source.
  • the session start request message may further carry an identifier (OTT id), a uniform resource locator (URL), an MA identifier (MA id), and video quality information (Qos) of the program source server.
  • OTT id a uniform resource locator
  • MA id an MA identifier
  • Qos video quality information
  • the session start request message is specifically used to initiate a session in a broadcast manner.
  • Step 309 The scheduler receives the session start request message sent by the program source server, and sends a session start request message to the base station corresponding to the SAI according to the SAI carried in the session start request message.
  • Step 310 The scheduler receives a session start response message sent by the base station according to the session start request message.
  • Step 311 The scheduler adds the base station to the IP multicast group according to the session start response message.
  • step 312 the scheduler allocates MA resources for the program source.
  • program admission and mapping are performed according to the priority of the program to be broadcasted by the program source and the resource usage of the MA, and the MA air interface resource allocation is performed for at least one program that is successfully admitted and mapped.
  • Step 313 The scheduler sends a resource scheduling message to the base station, where the resource scheduling message carries the information of the MA resource allocated for the program source server.
  • Step 314 The scheduler receives a resource scheduling response message sent by the base station according to the resource scheduling message.
  • the program source data can be downloaded, and the air interface resource allocation information is transmitted through the M2 interface, and the program data is sent to the eNB through the M1 interface to complete the eMBMS of the program.
  • broadcast the following resources may be used to broadcast the program by using the MA resources allocated for the program source.
  • step 315 the program source server sends the program data to the scheduler.
  • the program data Since the program data is to be broadcasted to the user equipment, the program data can be referred to as MBMS data.
  • Step 316 The scheduler receives the program data sent by the program source server, and performs data packet encapsulation on the program data, and then sends the program data to the base station.
  • the data packet is encapsulated in the program data, and the program data (MBMS data) may be added to the synchronization data (SYNC) and the general packet radio service tunneling protocol user plane (GTPU).
  • MBMS data program data
  • SYNC synchronization data
  • GTPU general packet radio service tunneling protocol user plane
  • Step 317 The base station receives the data packet sent by the scheduler, and decapsulates the data packet to obtain program data.
  • Step 318 The base station sends the program data to the UE in a broadcast manner according to the MA resource allocated for the program source.
  • the scheduler may initiate a request to end the program broadcast, and the scheduler recovers the air interface resource; or the program normally plays back, the scheduler automatically recovers the air interface resource.
  • the scheduler can adjust the air interface broadcast in real time according to the MA's traffic model, number of programs, and priority. Bandwidth, to achieve full use of broadcast resources.
  • the traffic model is the traffic volume distribution in a wireless networking area, for example, the residential area is the traffic peak in the morning and evening, and the office area working time is the traffic peak.
  • the operator can connect to the scheduler through the maintenance device, and can add, modify, and delete the program on the scheduler by operating the maintenance command.
  • the scheduler directly obtains the program data from the set program source server for eMBMS broadcast. That is, in the embodiment of the present invention, the eMBMS broadcast may be a broadcast initiated by the program source server after the program source server receives the request of the user's on-demand, or may be added by the administrator to the program identifier on the scheduler. A broadcast initiated by the scheduler.
  • the embodiment of the present invention provides a resource scheduling method, where the method is applied to an eMBMS, and the scheduler receives a session start request message sent by a program source server, where the session start request message carries the identifier SAI of the service area corresponding to the program source server, according to The SAI sends a session start request message to the base station corresponding to the SAI, and receives the session start response message sent by the base station according to the session start request message, adds the base station to the IP multicast group according to the session start response message, and allocates the MA resource to the program source server.
  • the base station sends a resource scheduling message, where the resource scheduling message carries the information of the MA resource allocated for the program source server, and receives the resource scheduling response message sent by the base station according to the resource scheduling message.
  • the method only involves the scheduler, the program source server and the base station.
  • the program source and the air interface broadcast channel have a clear mapping relationship, which can achieve the purpose of full utilization of the air interface broadcast channel and accurate program delivery. Effectively improve the utilization of broadcast channel resources.
  • FIG. 4 is a signal flow diagram of a resource scheduling method according to Embodiment 2 of the present invention.
  • the method is used in eMBMS to perform signaling interaction between UEs, an eNodeB, an eMBMS scheduler, a BM-SC, and a program source server.
  • the resource source of the broadcast resource is implemented, and the program source server may also be referred to as a content provider, wherein the scheduler is configured to implement the network element function of the MBMS-GW, the MME, and the MCE in the existing network architecture, and the method is based on FIG.
  • the network architecture shown refer to the schematic diagram of the scheduler interface shown in FIG. 5.
  • the scheduler provides the SG-mb and SGi-mb interface functions in addition to providing the M2 and M1 interface functions to the eNodeB.
  • the scheduler can provide a human-computer interaction interface.
  • the user can configure the external interface data through the interface.
  • the operator can activate the eMBMS. Only the three NEs of the BMSC, the eNodeB, and the scheduler are deployed.
  • the M1 of the eNodeB is configured.
  • the M2 interface and the SGmb and SGi-mb interfaces of the BM-SC do not need to be deployed with the MME, the MBMS GW, and the MCE, and the original M3 interface and the Sm interface are not configured.
  • the scheduler does not have an interface with the program source server, so the signaling interaction between the program source server and the scheduler needs to be transited through the BM-SC, which is briefly described below.
  • the basic flow of the method implementation is as shown in FIG. 4, and the method includes:
  • step 401 the BM-SC initiates an eMBMS session initiation process, and sends a session start request message to the scheduler.
  • Step 402 The scheduler sends a session start response message to the BM-SC.
  • step 403 the scheduler establishes a session parameter and allocates an eMBMS air interface resource for the session.
  • the establishment of the session parameters may include the M1 interface multicast destination IP address of the session, the C-tunnel endpoint identifier (C-TEID) of the GTPU, and the like.
  • step 404 the scheduler sends a session start request message to the eNodeB.
  • step 405 the eNodeB sends a session start response message to the scheduler.
  • step 406 the scheduler joins the eNodeB to the IP multicast group.
  • step 407 the scheduler sends a resource scheduling message to the eNodeB.
  • step 408 the eNodeB sends a resource scheduling response message to the scheduler.
  • step 409 the eNodeB sends the MA configuration information to the UE.
  • the eNodeB may specifically send the MA configuration information through the MBMS point-to-multipoint control channel (MCCH channel).
  • MCCH channel MBMS point-to-multipoint control channel
  • control plane session initiation process After the control plane session initiation process ends, the following user plane service data transmission process can be performed.
  • step 410 the BM-SC sends eMBMS service data to the scheduler.
  • step 411 the scheduler sends the eMBMS service data to the eNodeB through the M1 interface.
  • Step 412 The eNodeB sends the eMBMS service data to the UE by using the allocated air interface resource.
  • the eNodeB may specifically send eMBMS service data through an MBMS point-to-multipoint traffic channel (MTCH channel).
  • MTCH channel MBMS point-to-multipoint traffic channel
  • the functions of the MCE, the MME, the MBMS-GW, and the BMSC on the network side are implemented by an eMBMS scheduler, or the functions of the MCE, the MME, and the MBMS-GW are implemented by one eMBMS.
  • the scheduler is implemented to simplify the interface between the network elements and the service flow.
  • the device can adjust the air interface broadcast bandwidth in real time according to the MA traffic model, the number of programs, and the priority, so as to fully utilize the broadcast resources.
  • FIG. 6 is a schematic structural diagram of a scheduler according to Embodiment 3 of the present invention.
  • the scheduler is applied to an eMBMS, and is used to perform a resource scheduling method according to an embodiment of the present invention.
  • the scheduler includes: a receiving unit 501, and a processing unit 502. And sending unit 503;
  • the receiving unit 501 is configured to receive a session start request message sent by a program source server, where the session start request message carries a SAI corresponding to the program source;
  • the sending unit 503 is configured to send the session start request message to the base station corresponding to the SAI according to the SAI received by the receiving unit 501;
  • the receiving unit 501 is further configured to receive a session start response message sent by the base station according to the session start request message;
  • the processing unit 502 is configured to join the base station to an IP multicast group according to the session start response message received by the receiving unit 501.
  • the sending unit 503 is further configured to send a resource scheduling message to the base station, where the resource scheduling message carries information about the MA resource allocated for the program source;
  • the receiving unit 501 is further configured to receive a resource scheduling response message that is sent by the base station according to the resource scheduling message.
  • the receiving unit 501 is further configured to: before receiving the session start request message sent by the program source server, receive an MA status request message sent by the program source server, where the MA status request message carries the SAI ;
  • the processing unit 502 is further configured to: according to the SAI received by the receiving unit 501, search for a state of the MA corresponding to the SAI, where the state is used to reflect a resource usage of the MA;
  • the sending unit 503 is further configured to send an MA status response message to the program source server, where the MA status response message carries information about a status of the MA, so that the program source server is based on the status of the MA. , select unicast mode or broadcast mode to start a session.
  • the receiving unit 501 is specifically configured to receive a session start request message sent by a program source server, where the session start request message is used to initiate a session in a broadcast manner;
  • the processing unit 502 is further configured to: before the sending unit 503 sends a resource scheduling message to the base station, perform program admission according to a priority of a program to be broadcasted by the program source and resource usage of the MA. Mapping; MA air interface resource allocation is performed for at least one program that is admitted and mapped successfully.
  • the receiving unit 501 is specifically configured to receive a session start request message sent by the program source server by using a broadcast multicast service center.
  • FIG. 7 is a schematic diagram of a structure of a program source server according to a fourth embodiment of the present invention.
  • the program source server is applied to an eMBMS, and is used to perform a resource scheduling method according to an embodiment of the present invention.
  • the program source server includes: a sending unit 601;
  • the sending unit 601 is configured to send a session start request message to the scheduler, where the session start request message carries the SAI corresponding to the program source, so that the scheduler allocates the MA resource to the program source according to the SAI. .
  • the sending unit 601 is further configured to: before sending the session start request message to the scheduler, send an MA status request message to the scheduler, where the MA status request message carries the SAI;
  • the program source server further includes: a receiving unit 602 and a processing unit 603;
  • the receiving unit 602 is configured to receive an MA status response message sent by the scheduler, where the MA status response message carries information about a status of an MA corresponding to the SAI, where the status is used to reflect resources of the MA Use case
  • the processing unit 603 is configured to start a session by selecting a unicast mode or a broadcast mode according to the state of the MA received by the receiving unit.
  • the processing unit 603 is specifically configured to: when the status of the MA received by the receiving unit 602 reflects that the resource usage of the MA meets a preset condition, and the program on-demand rate of the MA exceeds a preset When setting the threshold, choose to initiate a session in broadcast mode.
  • the sending unit 601 is specifically configured to send a session start request message to the scheduler by using a broadcast multicast service center.
  • FIG. 8 is a structural diagram of a base station according to Embodiment 5 of the present invention.
  • the base station is applied to an eMBMS, and is used to perform a resource scheduling method according to an embodiment of the present invention.
  • the base station includes: a sending unit 701 and a receiving unit 702;
  • the receiving unit 702 is configured to receive a session start request message sent by the scheduler, where the session start request message carries the SAI corresponding to the program source;
  • the sending unit 701 is configured to send a session start response message to the scheduler according to the session start request message received by the receiving unit 702.
  • the receiving unit 702 is further configured to receive a resource scheduling message sent by the scheduler, where the resource scheduling message carries information about an MA resource allocated for the program source;
  • the sending unit 701 is further configured to send a resource scheduling response message to the scheduler according to the resource scheduling message received by the receiving unit 702.
  • FIG. 9 is a structural diagram of a scheduler according to Embodiment 6 of the present invention.
  • the scheduler is applied to an eMBMS, and is used to perform a resource scheduling method according to an embodiment of the present invention.
  • the scheduler includes: a memory 801, a receiver 802, Processor 803 and transmitter 804;
  • the memory 801 is configured to store program instructions.
  • the processor 803 is configured to perform the following operations according to the program instructions stored in the memory 801:
  • the processor 803 is further configured to perform the following operations according to the program instructions stored in the memory 801:
  • the receiver 802 Receiving, by the receiver 802, the MA status request message sent by the program source server before receiving the session start request message sent by the program source server, where the MA status request message carries the SAI;
  • the transmitter 804 Sending, by the transmitter 804, the MA status response message to the program source server, where the MA status response message carries information about the status of the MA, so that the program source server selects a single order according to the status of the MA. Start a session in broadcast mode or broadcast mode.
  • the processor 803 performs sending, by the receiver, a program source server to send The operation of the session start request message, including:
  • the processor 803 is further configured to perform the following operations according to the program instructions stored in the memory 801:
  • program admission and mapping are performed according to the priority of the program to be broadcasted by the program source and the resource usage of the MA; the access and mapping are successful. At least one program performs MA air interface resource allocation.
  • the processor 803 performs the operation of receiving, by the receiver 802, a session start request message sent by a program source server, including:
  • a session start request message transmitted by the program source server through the broadcast multicast service center is received by the receiver 802.
  • the program source server is applied to an eMBMS, and is used to perform a resource scheduling method according to an embodiment of the present invention.
  • the program source server includes: a memory 901, and processing 902 and communication interface 903;
  • the memory 901 is configured to store program instructions.
  • the processor 902 is configured to perform the following operations according to the program instructions stored in the memory 901:
  • processor 902 is further configured to perform the following operations according to the program instructions stored in the memory 901:
  • the status response message carries information about the status of the MA corresponding to the SAI, where the status is used to reflect resource usage of the MA;
  • the processor 902 performs the operation of starting a session by selecting a unicast mode or a broadcast mode according to the state of the received MA, including:
  • the program on-demand rate of the MA exceeds a preset threshold, it is selected to initiate a session in a broadcast manner.
  • the processor 902 performs the operation of sending a session start request message to the scheduler by using the communication interface 903, including:
  • a session start request message is sent to the scheduler through the broadcast multicast service center.
  • FIG. 11 is a structural diagram of a base station according to Embodiment 8 of the present invention.
  • the base station is applied to an eMBMS, and is used to perform a resource scheduling method according to an embodiment of the present invention.
  • the base station includes: a memory 1001, a processor 1002, and a transmitter 1003. And receiver 1004;
  • the memory 1001 is configured to store program instructions
  • the processor 1002 is configured to perform the following operations according to the program instructions stored in the memory 1001:
  • a resource scheduling response message is sent to the scheduler by the transmitter 1003 according to the resource scheduling message received by the receiver 1004.
  • FIG. 12 is a structural diagram of a scheduling system according to Embodiment 9 of the present invention.
  • the scheduling system is applied to an eMBMS, and is used to perform a resource scheduling method according to an embodiment of the present invention.
  • the scheduling system includes: a scheduler 1101, a program source server 1102, and a base station 1103;
  • the scheduler 1101 is configured to receive a session start request message sent by the program source server 1102, where the session start request message carries an SAI corresponding to a program source, and sends the SAI to the base station 1103 corresponding to the SAI according to the SAI.
  • the session start request message ; receiving a session start response message sent by the base station 1103 according to the session start request message; adding the base station 1103 to an IP multicast group according to the session start response message; to the base station 1103 And sending a resource scheduling message, where the resource scheduling message carries information about the MA resource allocated for the program source; and receiving a resource scheduling response message sent by the base station 1103 according to the resource scheduling message;
  • the program source server 1102 is configured to send a session start request message to the scheduler 1101, where the session start request message carries an SAI corresponding to a program source, so that the scheduler 1101 is configured according to the SAI.
  • the program source allocates MA resources;
  • the base station 1103 is configured to receive a session start request message sent by the scheduler 1101, where the session start request message carries an SAI corresponding to a program source, and send a session start to the scheduler 1101 according to the session start request message.
  • Non-transitory medium such as random access Memory, read only memory, flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disc, and any combination thereof.

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Abstract

本发明实施例涉及资源调度方法、基站、调度器、节目源服务器和系统，该方法包括：调度器接收节目源服务器发送的会话开始请求消息，会话开始请求消息中携带节目源对应的业务区域的标识SAI；向SAI对应的基站发送会话开始请求消息；接收基站根据会话开始请求消息发送的会话开始响应消息；将基站加入IP多播组；向基站发送资源调度消息，资源调度消息中携带为节目源分配的多媒体广播多播业务同频网区域MA资源的信息；接收基站根据资源调度消息发送的资源调度响应消息。由上可见，该方法中，在调度器中，节目源与空口广播信道之间具有清晰的映射关系，可以达到空口广播信道充分利用和节目精确投放的目的，有效提高广播信道资源的利用率。

Description

资源调度方法、基站、调度器、节目源服务器和系统 技术领域
本发明涉及无线通信领域，尤其涉及资源调度方法、基站、调度器、节目源服务器和系统。
背景技术
当前，用户更喜欢在智能终端和平板电脑上观看移动视频，由于用户行为习惯的变化，以及视频业务爆炸式的增长，给无线网络带来的压力相应增大。为了满足用户的需求，可以采用基于长期演进(long term evolution，LTE)技术的演进型多媒体广播多播业务(evolved multimedia broadcast multicast service，eMBMS)广播解决方案。eMBMS广播解决方案具有LTE大带宽、高频谱效率，广播模式下几乎没有接收用户数限制的优点。
现有的eMBMS广播解决方案中，在进行资源调度时，涉及多个网元，这多个网元包括广播多播业务中心(broadcast-multicast service centre，BM-SC)、多媒体广播多播业务网关(multimedia broadcast multicast service gateway，MGW)、移动管理实体(mobility management entity，MME)、多小区多播协调实体(multi-cell/multicast coordination entity，MCE)和演进型基站(evolved universal terrestrial radio access network nodeB，eNodeB)等。在现有的资源调度方法中，由于信令流程长，经过的网元多，从BM-SC到MBMS-GW、MME再到MCE、eNodeB，且上级网元只知道下一级网元的执行结果，不知道广播节目最终的执行结果，因此广播信道资源的利用率低。
发明内容
本发明实施例提供了资源调度方法、基站、调度器、节目源服务器和系统，以提高广播信道资源的利用率。
第一方面，提供了一种资源调度方法，所述方法应用于eMBMS中，所述方法包括：
调度器接收节目源服务器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的业务区域的标识(service area identity，SAI)；
根据所述SAI,向所述SAI对应的基站发送所述会话开始请求消息；
接收所述基站根据所述会话开始请求消息发送的会话开始响应消息；
根据所述会话开始响应消息，将所述基站加入互联网协议(internet protocol，IP)多播组；
向所述基站发送资源调度消息，所述资源调度消息中携带为所述节目源分配的多媒体广播多播业务同频网区域(multimedia broadcast multicast service single frequency network area，MA)资源的信息；
接收所述基站根据所述资源调度消息发送的资源调度响应消息。
结合第一方面，在第一方面的第一种可能的实现方式中，所述调度器接收节目源服务器发送的会话开始请求消息之前，所述方法还包括：
所述调度器接收所述节目源服务器发送的MA状态请求消息，所述MA状态请求消息中携带所述SAI；
根据所述SAI，查找所述SAI对应的MA的状态，所述状态用于反映所述MA的资源使用情况；
向所述节目源服务器发送MA状态响应消息，所述MA状态响应消息中携带所述MA的状态的信息，以使所述节目源服务器根据所述MA的状态，选择单播方式或广播方式启动一个会话。
结合第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，所述调度器接收节目源服务器发送的会话开始请求消息，包括：
调度器接收节目源服务器发送的会话开始请求消息，所述会话开始请求消息用于以广播方式启动一个会话；
所述向所述基站发送资源调度消息之前，所述方法还包括：
根据所述节目源待广播的节目的优先级和所述MA的资源使用情况进行节目准入和映射；
对于准入和映射成功的至少一个节目，进行MA空口资源分配。
结合第一方面，在第一方面的第三种可能的实现方式中，所述调度器接收节目源服务器发送的会话开始请求消息，包括：
调度器接收节目源服务器通过广播多播业务中心发送的会话开始请求消息。
第二方面，提供了一种资源调度方法，所述方法应用于eMBMS中，所述方法包括：
节目源服务器向调度器发送会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI，以使所述调度器根据所述SAI,为所述节目源分配MA资源。
结合第二方面，在第二方面的第一种可能的实现方式中，所述节目源服务器向调度器发送会话开始请求消息之前，所述方法还包括：
所述节目源服务器向所述调度器发送MA状态请求消息，所述MA状态请求消息中携带所述SAI；
接收所述调度器发送的MA状态响应消息，所述MA状态响应消息中携带所述SAI对应的MA的状态的信息，所述状态用于反映所述MA的资源使用情况；
所述节目源服务器根据所述MA的状态，选择单播方式或广播方式启动一个会话。
结合第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述节目源服务器根据所述MA的状态，选择单播方式或广播方式 启动一个会话，包括：
当所述MA的状态反映出所述MA的资源使用情况满足预设条件，并且，所述MA下的节目点播率超过预设阈值时，选择以广播方式启动一个会话。
结合第二方面，在第二方面的第三种可能的实现方式中，所述节目源服务器向调度器发送会话开始请求消息，包括：
节目源服务器通过广播多播业务中心向调度器发送会话开始请求消息。
第三方面，提供了一种资源调度方法，所述方法应用于eMBMS中，所述方法包括：
基站接收调度器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI；
根据所述会话开始请求消息向所述调度器发送会话开始响应消息；
接收所述调度器发送的资源调度消息，所述资源调度消息中携带为所述节目源分配的MA资源的信息；
根据所述资源调度消息向所述调度器发送资源调度响应消息。
第四方面，提供了一种调度器，所述调度器应用于eMBMS中，所述调度器包括：接收单元、处理单元和发送单元；
所述接收单元，用于接收节目源服务器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI；
所述发送单元，用于根据所述接收单元接收的所述SAI,向所述SAI对应的基站发送所述会话开始请求消息；
所述接收单元，还用于接收所述基站根据所述会话开始请求消息发送的会话开始响应消息；
所述处理单元，用于根据所述接收单元接收的会话开始响应消息，将所述基站加入IP多播组；
所述发送单元，还用于向所述基站发送资源调度消息，所述资源调度消息中携带为所述节目源分配的MA资源的信息；
所述接收单元，还用于接收所述基站根据所述资源调度消息发送的资源调度响应消息。
结合第四方面，在第四方面的第一种可能的实现方式中，所述接收单元，还用于在接收节目源服务器发送的会话开始请求消息之前，接收所述节目源服务器发送的MA状态请求消息，所述MA状态请求消息中携带所述SAI；
所述处理单元，还用于根据所述接收单元接收的所述SAI，查找所述SAI对应的MA的状态，所述状态用于反映所述MA的资源使用情况；
所述发送单元，还用于向所述节目源服务器发送MA状态响应消息，所述MA状态响应消息中携带所述MA的状态的信息，以使所述节目源服务器根据所述MA的状态，选择单播方式或广播方式启动一个会话。
结合第四方面的第一种可能的实现方式，在第四方面的第二种可能的实现方式中，所述接收单元，具体用于接收节目源服务器发送的会话开始请求消息，所述会话开始请求消息用于以广播方式启动一个会话；
所述处理单元，还用于在所述发送单元向所述基站发送资源调度消息之前，根据所述节目源待广播的节目的优先级和所述MA的资源使用情况进行节目准入和映射；对于准入和映射成功的至少一个节目，进行MA空口资源分配。
结合第四方面，在第四方面的第三种可能的实现方式中，所述接收单元，具体用于接收节目源服务器通过广播多播业务中心发送的会话开始请求消息。
第五方面，提供了一种节目源服务器，所述节目源服务器应用于eMBMS中，所述节目源服务器包括：发送单元；
所述发送单元，用于向调度器发送会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI，以使所述调度器根据所述SAI,为所述节目源分配MA资源。
结合第五方面，在第五方面的第一种可能的实现方式中，所述发送单元，还用于在向调度器发送会话开始请求消息之前，向所述调度器发送MA状态请 求消息，所述MA状态请求消息中携带所述SAI；
所述节目源服务器还包括：接收单元和处理单元；
所述接收单元，用于接收所述调度器发送的MA状态响应消息，所述MA状态响应消息中携带所述SAI对应的MA的状态的信息，所述状态用于反映所述MA的资源使用情况；
所述处理单元，用于根据所述接收单元接收的MA的状态，选择单播方式或广播方式启动一个会话。
结合第五方面的第一种可能的实现方式，在第五方面的第二种可能的实现方式中，所述处理单元，具体用于当所述接收单元接收的MA的状态反映出所述MA的资源使用情况满足预设条件，并且，所述MA下的节目点播率超过预设阈值时，选择以广播方式启动一个会话。
结合第五方面，在第五方面的第三种可能的实现方式中，所述发送单元，具体用于通过广播多播业务中心向调度器发送会话开始请求消息。
第六方面，提供了一种基站，所述基站应用于eMBMS中，所述基站包括：发送单元和接收单元；
所述接收单元，用于接收调度器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI；
所述发送单元，用于根据所述接收单元接收的会话开始请求消息向所述调度器发送会话开始响应消息；
所述接收单元，还用于接收所述调度器发送的资源调度消息，所述资源调度消息中携带为所述节目源分配的MA资源的信息；
所述发送单元，还用于根据所述接收单元接收的资源调度消息向所述调度器发送资源调度响应消息。
第七方面，提供了一种调度器，所述调度器应用于eMBMS中，所述调度器包括：存储器，接收机、处理器和发射机；
所述存储器，用于存储程序指令；
所述处理器，用于根据所述存储器中存储的程序指令执行以下操作：
通过所述接收机接收节目源服务器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI；
通过所述发射机根据所述接收机接收的所述SAI,向所述SAI对应的基站发送所述会话开始请求消息；
通过所述接收机接收所述基站根据所述会话开始请求消息发送的会话开始响应消息；
根据所述接收机接收的会话开始响应消息，将所述基站加入IP多播组；
通过所述发射机向所述基站发送资源调度消息，所述资源调度消息中携带为所述节目源分配的MA资源的信息；
通过所述接收机接收所述基站根据所述资源调度消息发送的资源调度响应消息。
结合第七方面，在第七方面的第一种可能的实现方式中，所述处理器，还用于根据所述存储器中存储的程序指令执行以下操作：
通过所述接收机在接收节目源服务器发送的会话开始请求消息之前，接收所述节目源服务器发送的MA状态请求消息，所述MA状态请求消息中携带所述SAI；
根据所述接收机接收的所述SAI，查找所述SAI对应的MA的状态，所述状态用于反映所述MA的资源使用情况；
通过所述发射机向所述节目源服务器发送MA状态响应消息，所述MA状态响应消息中携带所述MA的状态的信息，以使所述节目源服务器根据所述MA的状态，选择单播方式或广播方式启动一个会话。
结合第七方面的第一种可能的实现方式，在第七方面的第二种可能的实现方式中，所述处理器执行通过所述接收机接收节目源服务器发送的会话开始请求消息的操作，包括：
通过所述接收机接收节目源服务器发送的会话开始请求消息，所述会话 开始请求消息用于以广播方式启动一个会话；
所述处理器，还用于根据所述存储器中存储的程序指令执行以下操作：
在通过所述发射机向所述基站发送资源调度消息之前，根据所述节目源待广播的节目的优先级和所述MA的资源使用情况进行节目准入和映射；对于准入和映射成功的至少一个节目，进行MA空口资源分配。
结合第七方面，在第七方面的第三种可能的实现方式中，所述处理器执行所述通过所述接收机接收节目源服务器发送的会话开始请求消息的操作，包括：
通过所述接收机接收节目源服务器通过广播多播业务中心发送的会话开始请求消息。
第八方面，提供了一种节目源服务器，所述节目源服务器应用于eMBMS中，所述节目源服务器包括：存储器、处理器和通信接口；
所述存储器，用于存储程序指令；
所述处理器，用于根据所述存储器中存储的程序指令执行以下操作：
通过所述通信接口向调度器发送会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI，以使所述调度器根据所述SAI,为所述节目源分配MA资源。
结合第八方面，在第八方面的第一种可能的实现方式中，所述处理器还用于根据所述存储器中存储的程序指令执行以下操作：
在通过所述通信接口向调度器发送会话开始请求消息之前，向所述调度器发送MA状态请求消息，所述MA状态请求消息中携带所述SAI；
通过所述通信接口接收所述调度器发送的MA状态响应消息，所述MA状态响应消息中携带所述SAI对应的MA的状态的信息，所述状态用于反映所述MA的资源使用情况；
根据接收的MA的状态，选择单播方式或广播方式启动一个会话。
结合第八方面的第一种可能的实现方式，在第八方面的第二种可能的实 现方式中，所述处理器执行所述根据接收的MA的状态，选择单播方式或广播方式启动一个会话的操作，包括：
当接收的MA的状态反映出所述MA的资源使用情况满足预设条件，并且，所述MA下的节目点播率超过预设阈值时，选择以广播方式启动一个会话。
结合第八方面，在第八方面的第三种可能的实现方式中，所述处理器执行所述通过所述通信接口向调度器发送会话开始请求消息的操作，包括：
通过广播多播业务中心向调度器发送会话开始请求消息。
第九方面，提供了一种基站，所述基站应用于eMBMS中，所述基站包括：存储器、处理器、发射机和接收机；
所述存储器，用于存储程序指令；
所述处理器，用于根据所述存储器中存储的程序指令执行以下操作：
通过所述接收机接收调度器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI；
根据所述接收机接收的会话开始请求消息，通过所述发射机向所述调度器发送会话开始响应消息；
通过所述接收机接收所述调度器发送的资源调度消息，所述资源调度消息中携带为所述节目源分配的MA资源的信息；
根据所述接收机接收的资源调度消息，通过所述发射机向所述调度器发送资源调度响应消息。
第十方面，提供了一种调度系统，所述调度系统应用于eMBMS中，所述调度系统包括：调度器、节目源服务器和基站；
所述调度器，用于接收所述节目源服务器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI；根据所述SAI,向所述SAI对应的基站发送所述会话开始请求消息；接收所述基站根据所述会话开始请求消息发送的会话开始响应消息；根据所述会话开始响应消息，将所述基站加入IP多播组；向所述基站发送资源调度消息，所述资源调度消息中携带为所 述节目源分配的MA资源的信息；接收所述基站根据所述资源调度消息发送的资源调度响应消息；
所述节目源服务器，用于向所述调度器发送会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI，以使所述调度器根据所述SAI,为所述节目源分配MA资源；
所述基站，用于接收所述调度器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI；根据所述会话开始请求消息向所述调度器发送会话开始响应消息；接收所述调度器发送的资源调度消息，所述资源调度消息中携带为所述节目源分配的MA资源的信息；根据所述资源调度消息向所述调度器发送资源调度响应消息。
本发明实施例提供了一种资源调度方法，该方法应用于eMBMS中，该方法中仅涉及调度器、节目源服务器和基站，在调度器中，节目源与空口广播信道之间具有清晰的映射关系，可以达到空口广播信道充分利用和节目精确投放的目的，有效提高广播信道资源的利用率。
附图说明
图1为本发明实施例提供的资源调度方法所基于的网络架构示意图；
图2为本发明实施例提供的调度器功能框图；
图3为本发明实施例一提供的资源调度方法信号流图；
图4为本发明实施例二提供的资源调度方法信号流图；
图5为本发明实施例提供的调度器接口示意图；
图6为本发明实施例三提供的调度器结构示意图；
图7为本发明实施例四提供的节目源服务器结构示意图；
图8为本发明实施例五提供的基站结构图；
图9为本发明实施例六提供的调度器结构图；
图10为本发明实施例七提供的节目源服务器结构图；
图11为本发明实施例八提供的基站结构图；
图12为本发明实施例九提供的调度系统结构图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，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描述。
图1为本发明实施例提供的资源调度方法所基于的网络架构示意图，为了在eMBMS中进行资源调度时，缩短信令流程，减少经过的网元，本发明实施例中，在通常的eMBMS网络架构的基础上新增一个调度器，该调度器专门用于广播业务的资源调度，而不用于单播业务的资源调度，对于单播业务没有影响。
该调度器对eNodeB提供第三代合作伙伴计划(3rd generation partnership project，3GPP)标准协议规定的M2、M1接口功能，其中，M2接口为控制面接口，用于会话消息和调度消息交互；M1接口为业务面接口，用于业务数据传输。
该调度器对节目源服务器提供自定义应用程序编程接口(application programming interface，API)，该API可以承载在超文本传输协议(hyperText transfer protocol，HTTP)上、也可以承载在流控制传输协议(stream control transmission protocol，SCTP)上。其中，节目源服务器可以通过互联网向用户提供各种应用服务，因此可以将节目源服务器称为应用服务器。
该调度器提供操作维护接口，供操作维护人员在维护设备上通过命令在调度器上添加广播节目信息。
该调度器通过节目源与空口资源的映射，将节目源内容调度到对应的多媒体广播多播业务同频网区域(multimedia broadcast multicast service single frequency network area，MA)广播，最终通过LTE空口eMBMS广播给终端客户。
通过在现有的网络架构中引入调度器，可以在进行广播业务的资源调度时，仅通过节目源服务器、调度器和eNodeB三个网元间的信令交互来实现。有效缩短了信令流程，减少了经过的网元，在调度器中，节目源与空口广播信道之间具有清晰的映射关系，可以达到空口广播信道充分利用和节目精确投放的目的，有效提高了广播信道资源的利用率。
图2为本发明实施例提供的调度器功能框图，由于该调度器应用于eMBMS中广播资源的调度，因此该调度器也可称为eMBMS调度器，该调度器包括5个功能模块，这5个功能模块分别为调度器模块、MA资源分配模块、节目宣告模块、节目到MA映射模块和组播传输模块。其中，调度器模块用于通过操作维护接口接收操作管理维护(operation administration and maintenance，OAM)设备发送的节目管理信息，根据该节目管理信息添加或删除广播节目信息；调度器模块还用于通过API接收节目源服务器发送的节目请求消息或资源查询消息。MA资源分配模块用于根据调度器模块的指示为节目源服务器分配对应的MA资源，并将分配的MA资源的信息通过M2接口发送给eNodeB(简写为eNB)。节目宣告模块，用于向组播传输模块宣告待广播的节目信息。节目到MA映射模块，用于从节目源服务器获取节目数据，将节目数据映射到为该节目源服务器分配的MA资源上，将上述映射关系发送给组播传输模块。组播传输模块，用于从节目到MA映射模块接收节目数据与MA资源的映射关系，根据上述映射关系，通过M1接口将节目数据发送给eNodeB。
参照图2，节目源服务器负责用户信息管理，可以根据用户的点播请求向调度器发起节目广播请求，由调度器根据该节目广播请求进行广播资源调度。
本发明实施例中，对节目进行广播除了可以由节目源服务器发起之外，也可以由OAM发起，具体地，可以由管理人员通过OAM向调度器添加广播节目信息。
图3为本发明实施例一提供的资源调度方法信号流图，该方法用于eMBMS中，通过用户设备(user equipment，UE)、eNodeB、eMBMS调度器和节目源 服务器这几个网元间的信令交互实现广播资源的资源调度，UE也可称为应用程序客户端(APP client),其中，调度器用于实现现有网络架构中BM-SC、MBMS-GW、MME和MCE的网元功能，该方法包括：
步骤301，节目源服务器从UE获取用户名和密码，根据用户名和密码进行用户鉴权。
当用户鉴权的结果为鉴权成功时，执行以下步骤，否则结束流程。
步骤302，节目源服务器接收UE上报的位置信息。
上述位置信息具体可以为小区标识(CellID)。
步骤303，节目源服务器接收UE发送的节目获取/点播请求消息。
该请求消息中可以包括节目名称、节目播放时间等信息。
在一个具体的应用场景中，某些用户属于节目源1的签约用户，某些用户属于节目源2的签约用户，用户设备上安装对应节目源的APP，用户通过用户设备登录到节目源点播节目，同时上报UE当前位置信息，节目源服务器对签约用户进行鉴权、计费和信息管理。
步骤304，调度器接收节目源服务器发送的用户名和密码，根据用户名和密码对节目源服务器进行鉴权。
当鉴权的结果为鉴权成功时，执行以下步骤，否则结束流程。
本发明实施例中，节目源服务器属于有权在eMBMS上发送节目的合法用户，用户鉴权和计费功能可以在eMBMS调度器上，也可以由运营商业务支撑系统(BSS)完成。每个节目源对应一个或多个SA，用SAI标识。
步骤305，调度器接收节目源服务器发送的MA状态请求消息，该MA状态请求消息中携带节目源对应的业务区域的标识SAI。
调度器与节目源服务器之间为自定义API接口，节目源服务器通过API接口向调度器查询eMBMS广播资源，调度器向节目源服务器返回广播资源信息，该广播资源信息包括但不限于MA广播总带宽、剩余带宽、小区列表等。
调度器在接收到MA状态请求消息之后，可以根据SAI，查找SAI对应的 MA的状态，该状态用于反映MA的资源使用情况。
其中，SA是广播业务区域，是一个业务概念，比方说某个城市的某个区，或者校园；MA，是基站组网区域，在这个区域内的基站都是严格时间同步的，根据网络规划MA，某些基站属于MA1，某些基站属于MA2，MA规划数据保存在调度器上。
步骤306，调度器向节目源服务器发送MA状态响应消息，MA状态响应消息中携带SAI对应的MA的状态的信息。
步骤307，节目源服务器根据MA的状态，选择单播方式或广播方式启动一个会话。
本发明实施例中，当MA的状态反映出MA的资源使用情况满足预设条件，并且，MA下的节目点播率超过预设阈值时，选择以广播方式启动一个会话。
例如，节目源服务器获取MA资源后，可以在某个MA下某个节目点播率超过一定数量时，直接发起广播请求。
其中，步骤301至步骤307为可选步骤，节目源服务器可以在未获取到用户的节目点播请求时，直接向调度器发起节目广播请求。
步骤308，节目源服务器向调度器发送会话开始请求消息。
会话开始请求消息中携带节目源对应的业务区域的标识SAI。
会话开始请求消息中还可以携带节目源服务器的标识(OTT id)、统一资源定位符(uniform resource locator，URL)、MA标识(MA id)和视频质量信息(Qos)。
其中，会话开始请求消息具体用于以广播方式启动一个会话。
步骤309，调度器接收节目源服务器发送的会话开始请求消息，根据会话开始请求消息中携带的SAI,向SAI对应的基站发送会话开始请求消息。
步骤310，调度器接收基站根据会话开始请求消息发送的会话开始响应消息。
步骤311，调度器根据会话开始响应消息，将基站加入IP多播组。
步骤312，调度器为节目源分配MA资源。
具体地，根据节目源待广播的节目的优先级和MA的资源使用情况进行节目准入和映射，对于准入和映射成功的至少一个节目，进行MA空口资源分配。
步骤313，调度器向基站发送资源调度消息，资源调度消息中携带为节目源服务器分配的MA资源的信息。
步骤314，调度器接收基站根据资源调度消息发送的资源调度响应消息。
本发明实施例中，在通过以上的流程为节目源分配了MA资源后，可以下载节目源数据，将空口资源分配信息通过M2接口，节目数据通过M1接口，下发到eNB，完成节目的eMBMS广播。具体地，可以利用为节目源分配的MA资源，采用下面的流程进行节目的广播。
步骤315，节目源服务器向调度器发送节目数据。
由于节目数据是要以广播方式发送给用户设备的，因此可以将节目数据称为MBMS data。
步骤316，调度器接收节目源服务器发送的节目数据，对节目数据进行数据包封装后发送给基站。
其中，对节目数据进行数据包封装，具体可以将节目数据(MBMS data)加上同步数据(SYNC)和通用分组无线业务隧道封装协议用户面数据(general packet radio service tunneling protocol user plane，GTPU)。
步骤317，基站接收调度器发送的数据包，对数据包进行解封装得到节目数据。
步骤318，基站根据为节目源分配的MA资源，以广播方式将节目数据发送给UE。
此外，当节目源服务器获取某个MA下某个节目点播率下降到一定数量，可以向调度器发起请求结束节目广播，调度器回收空口资源；或者节目正常播放完毕，调度器自动回收空口资源。
调度器可以根据MA的话务模型、节目数量和优先级等实时调整空口广播 带宽，达到广播资源的充分利用。其中，话务模型，就是某个无线组网区域内的话务量分布，比如住宅区早晚是话务高峰，而办公区工作时间是话务高峰。
操作人员可以通过维护设备连接调度器，通过操作维护命令可以在调度器上添加、修改、删除节目，调度器添加节目成功后直接从设置的节目源服务器获取节目数据进行eMBMS广播。也就是说，本发明实施例中，eMBMS广播可以是节目源服务器在收到用户的点播请求后，由节目源服务器发起的广播；也可以是由管理人员通过在调度器上添加节目标识，从而由调度器发起的广播。
本发明实施例提供了一种资源调度方法，该方法应用于eMBMS中，调度器接收节目源服务器发送的会话开始请求消息，会话开始请求消息中携带节目源服务器对应的业务区域的标识SAI，根据SAI,向SAI对应的基站发送会话开始请求消息，接收基站根据会话开始请求消息发送的会话开始响应消息，根据会话开始响应消息，将基站加入IP多播组，为节目源服务器分配MA资源，向基站发送资源调度消息，资源调度消息中携带为节目源服务器分配的MA资源的信息，接收基站根据资源调度消息发送的资源调度响应消息。由上可见，该方法中仅涉及调度器、节目源服务器和基站，在调度器中，节目源与空口广播信道之间具有清晰的映射关系，可以达到空口广播信道充分利用和节目精确投放的目的，有效提高广播信道资源的利用率。
图4为本发明实施例二提供的资源调度方法信号流图，该方法用于eMBMS中，通过UE、eNodeB、eMBMS调度器、BM-SC和节目源服务器这几个网元间的信令交互实现广播资源的资源调度，节目源服务器还可以称为内容提供方(content provider)，其中，调度器用于实现现有网络架构中MBMS-GW、MME和MCE的网元功能，该方法基于图1所示的网络架构，参照图5所示的调度器接口示意图，该调度器除了对外提供M2、M1接口功能，与eNodeB对接，该调度器还对外提供SG-mb，SGi-mb接口功能，与BM-SC对接，SG-mb接口： BMSC与MBMS GW之间控制面接口，用于会话消息交互；SGi-mb接口：BMSC与MBMS GW之间业务面接口，用于业务数据传输。
该调度器可以对外提供人机交互接口，用户可以通过该接口完成对外接口数据的配置，作为运营商开通eMBMS，只需要部署BMSC、eNodeB与该调度器这三个网元，配置与eNodeB的M1，M2接口，以及与BM-SC的SGmb，SGi-mb接口，不需要部署MME、MBMS GW和MCE、不再配置原有的M3接口，Sm接口。
与本发明实施例一提供的资源调度方法不同的是，调度器不具有与节目源服务器的接口，因此节目源服务器与调度器之间的信令交互需要通过BM-SC进行中转，下面简要描述该方法实现的基本流程，参照图4，该方法包括：
步骤401，BM-SC发起eMBMS会话启动流程，向调度器发送会话开始请求消息。
步骤402，调度器向BM-SC发送会话开始响应消息。
步骤403，调度器建立会话参数，并为会话分配eMBMS空口资源。
建立会话参数，具体可以包括分配会话的M1接口组播目的IP地址、GTPU的隧道端点标识(C-tunnel endpoint identifier，C-TEID)等。
步骤404，调度器向eNodeB发送会话开始请求消息。
步骤405，eNodeB向调度器发送会话开始响应消息。
步骤406，调度器将eNodeB加入IP多播组。
步骤407，调度器向eNodeB发送资源调度消息。
步骤408，eNodeB向调度器发送资源调度响应消息。
步骤409，eNodeB向UE发送MA配置信息。
eNodeB具体可以通过MBMS点到多点控制信道(MCCH信道)发送MA配置信息。
以上为控制面会话启动流程，当控制面会话启动流程结束后，可以执行以下的用户面业务数据发送流程。
步骤410，BM-SC向调度器发送eMBMS业务数据。
步骤411，调度器通过M1接口将eMBMS业务数据发送到eNodeB。
步骤412，eNodeB通过分配的空口资源将eMBMS业务数据发送到UE。
eNodeB具体可以通过MBMS点到多点业务信道(MTCH信道)发送eMBMS业务数据。
本发明实施例中，通过设备和网元融合，将网络侧的MCE、MME、MBMS-GW和BMSC的功能由一个eMBMS调度器来实现，或者将MCE、MME、MBMS-GW的功能由一个eMBMS调度器来实现，从而简化网元间接口和业务流程，网络侧的MCE、MME、MBMS-GW和BMSC合一后，Sg-mb接口、Sm接口、M3接口成为内部接口，或者网络侧的MCE、MME、MBMS-GW合一后，Sm接口、M3接口成为内部接口。通过提供一个eMBMS调度器，向下直接对接eNB，向上直接对接节目源服务器，提供节目到空口广播资源的映射和调度，调度器配合节目源，完成单播和广播之间的准确转换，并且调度器可以根据MA的话务模型、节目数量和优先级等实时调整空口广播带宽，达到广播资源的充分利用。
图6为本发明实施例三提供的调度器结构示意图，所述调度器应用于eMBMS中，用于执行本发明实施例提供的资源调度方法，所述调度器包括：接收单元501、处理单元502和发送单元503；
所述接收单元501，用于接收节目源服务器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI；
所述发送单元503，用于根据所述接收单元501接收的所述SAI,向所述SAI对应的基站发送所述会话开始请求消息；
所述接收单元501，还用于接收所述基站根据所述会话开始请求消息发送的会话开始响应消息；
所述处理单元502，用于根据所述接收单元501接收的会话开始响应消息，将所述基站加入IP多播组；
所述发送单元503，还用于向所述基站发送资源调度消息，所述资源调度消息中携带为所述节目源分配的MA资源的信息；
所述接收单元501，还用于接收所述基站根据所述资源调度消息发送的资源调度响应消息。
可选地，所述接收单元501，还用于在接收节目源服务器发送的会话开始请求消息之前，接收所述节目源服务器发送的MA状态请求消息，所述MA状态请求消息中携带所述SAI；
所述处理单元502，还用于根据所述接收单元501接收的所述SAI，查找所述SAI对应的MA的状态，所述状态用于反映所述MA的资源使用情况；
所述发送单元503，还用于向所述节目源服务器发送MA状态响应消息，所述MA状态响应消息中携带所述MA的状态的信息，以使所述节目源服务器根据所述MA的状态，选择单播方式或广播方式启动一个会话。
可选地，所述接收单元501，具体用于接收节目源服务器发送的会话开始请求消息，所述会话开始请求消息用于以广播方式启动一个会话；
所述处理单元502，还用于在所述发送单元503向所述基站发送资源调度消息之前，根据所述节目源待广播的节目的优先级和所述MA的资源使用情况进行节目准入和映射；对于准入和映射成功的至少一个节目，进行MA空口资源分配。
可选地，所述接收单元501，具体用于接收节目源服务器通过广播多播业务中心发送的会话开始请求消息。
图7为本发明实施例四提供的节目源服务器结构示意图，所述节目源服务器应用于eMBMS中，用于执行本发明实施例提供的资源调度方法，所述节目源服务器包括：发送单元601；
所述发送单元601，用于向调度器发送会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI，以使所述调度器根据所述SAI,为所述节目源分配MA资源。
可选地，所述发送单元601，还用于在向调度器发送会话开始请求消息之前，向所述调度器发送MA状态请求消息，所述MA状态请求消息中携带所述 SAI；
所述节目源服务器还包括：接收单元602和处理单元603；
所述接收单元602，用于接收所述调度器发送的MA状态响应消息，所述MA状态响应消息中携带所述SAI对应的MA的状态的信息，所述状态用于反映所述MA的资源使用情况；
所述处理单元603，用于根据所述接收单元接收的MA的状态，选择单播方式或广播方式启动一个会话。
可选地，所述处理单元603，具体用于当所述接收单元602接收的MA的状态反映出所述MA的资源使用情况满足预设条件，并且，所述MA下的节目点播率超过预设阈值时，选择以广播方式启动一个会话。
可选地，所述发送单元601，具体用于通过广播多播业务中心向调度器发送会话开始请求消息。
图8为本发明实施例五提供的基站结构图，所述基站应用于eMBMS中，用于执行本发明实施例提供的资源调度方法，所述基站包括：发送单元701和接收单元702；
所述接收单元702，用于接收调度器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI；
所述发送单元701，用于根据所述接收单元702接收的会话开始请求消息向所述调度器发送会话开始响应消息；
所述接收单元702，还用于接收所述调度器发送的资源调度消息，所述资源调度消息中携带为所述节目源分配的MA资源的信息；
所述发送单元701，还用于根据所述接收单元702接收的资源调度消息向所述调度器发送资源调度响应消息。
图9为本发明实施例六提供的调度器结构图，所述调度器应用于eMBMS中，用于执行本发明实施例提供的资源调度方法，所述调度器包括：存储器801，接收机802、处理器803和发射机804；
所述存储器801，用于存储程序指令；
所述处理器803，用于根据所述存储器801中存储的程序指令执行以下操作：
通过所述接收机802接收节目源服务器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI；
通过所述发射机804根据所述接收机802接收的所述SAI,向所述SAI对应的基站发送所述会话开始请求消息；
通过所述接收机802接收所述基站根据所述会话开始请求消息发送的会话开始响应消息；
根据所述接收机802接收的会话开始响应消息，将所述基站加入IP多播组；
通过所述发射机804向所述基站发送资源调度消息，所述资源调度消息中携带为所述节目源分配的MA资源的信息；
通过所述接收机802接收所述基站根据所述资源调度消息发送的资源调度响应消息。
可选地，所述处理器803，还用于根据所述存储器801中存储的程序指令执行以下操作：
通过所述接收机802在接收节目源服务器发送的会话开始请求消息之前，接收所述节目源服务器发送的MA状态请求消息，所述MA状态请求消息中携带所述SAI；
根据所述接收机802接收的所述SAI，查找所述SAI对应的MA的状态，所述状态用于反映所述MA的资源使用情况；
通过所述发射机804向所述节目源服务器发送MA状态响应消息，所述MA状态响应消息中携带所述MA的状态的信息，以使所述节目源服务器根据所述MA的状态，选择单播方式或广播方式启动一个会话。
可选地，所述处理器803执行通过所述接收机接收节目源服务器发送的 会话开始请求消息的操作，包括：
通过所述接收机802接收节目源服务器发送的会话开始请求消息，所述会话开始请求消息用于以广播方式启动一个会话；
所述处理器803，还用于根据所述存储器801中存储的程序指令执行以下操作：
在通过所述发射机804向所述基站发送资源调度消息之前，根据所述节目源待广播的节目的优先级和所述MA的资源使用情况进行节目准入和映射；对于准入和映射成功的至少一个节目，进行MA空口资源分配。
可选地，所述处理器803执行所述通过所述接收机802接收节目源服务器发送的会话开始请求消息的操作，包括：
通过所述接收机802接收节目源服务器通过广播多播业务中心发送的会话开始请求消息。
图10为本发明实施例七提供的节目源服务器结构图，所述节目源服务器应用于eMBMS中，用于执行本发明实施例提供的资源调度方法，所述节目源服务器包括：存储器901、处理器902和通信接口903；
所述存储器901，用于存储程序指令；
所述处理器902，用于根据所述存储器901中存储的程序指令执行以下操作：
通过所述通信接口903向调度器发送会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI，以使所述调度器根据所述SAI,为所述节目源分配MA资源。
可选地，所述处理器902还用于根据所述存储器901中存储的程序指令执行以下操作：
在通过所述通信接口903向调度器发送会话开始请求消息之前，向所述调度器发送MA状态请求消息，所述MA状态请求消息中携带所述SAI；
通过所述通信接口903接收所述调度器发送的MA状态响应消息，所述MA 状态响应消息中携带所述SAI对应的MA的状态的信息，所述状态用于反映所述MA的资源使用情况；
根据接收的MA的状态，选择单播方式或广播方式启动一个会话。
可选地，所述处理器902执行所述根据接收的MA的状态，选择单播方式或广播方式启动一个会话的操作，包括：
当接收的MA的状态反映出所述MA的资源使用情况满足预设条件，并且，所述MA下的节目点播率超过预设阈值时，选择以广播方式启动一个会话。
可选地，所述处理器902执行所述通过所述通信接口903向调度器发送会话开始请求消息的操作，包括：
通过广播多播业务中心向调度器发送会话开始请求消息。
图11为本发明实施例八提供的基站结构图，所述基站应用于eMBMS中，用于执行本发明实施例提供的资源调度方法，所述基站包括：存储器1001、处理器1002、发射机1003和接收机1004；
所述存储器1001，用于存储程序指令；
所述处理器1002，用于根据所述存储器1001中存储的程序指令执行以下操作：
通过所述接收机1004接收调度器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI；
根据所述接收机1004接收的会话开始请求消息，通过所述发射机1003向所述调度器发送会话开始响应消息；
通过所述接收机1004接收所述调度器发送的资源调度消息，所述资源调度消息中携带为所述节目源分配的MA资源的信息；
根据所述接收机1004接收的资源调度消息，通过所述发射机1003向所述调度器发送资源调度响应消息。
图12为本发明实施例九提供的调度系统结构图，所述调度系统应用于eMBMS中，用于执行本发明实施例提供的资源调度方法，所述调度系统包括： 调度器1101、节目源服务器1102和基站1103；
所述调度器1101，用于接收所述节目源服务器1102发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI；根据所述SAI,向所述SAI对应的基站1103发送所述会话开始请求消息；接收所述基站1103根据所述会话开始请求消息发送的会话开始响应消息；根据所述会话开始响应消息，将所述基站1103加入IP多播组；向所述基站1103发送资源调度消息，所述资源调度消息中携带为所述节目源分配的MA资源的信息；接收所述基站1103根据所述资源调度消息发送的资源调度响应消息；
所述节目源服务器1102，用于向所述调度器1101发送会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI，以使所述调度器1101根据所述SAI,为所述节目源分配MA资源；
所述基站1103，用于接收所述调度器1101发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的SAI；根据所述会话开始请求消息向所述调度器1101发送会话开始响应消息；接收所述调度器1101发送的资源调度消息，所述资源调度消息中携带为所述节目源分配的MA资源的信息；根据所述资源调度消息向所述调度器1101发送资源调度响应消息。
专业人员应该还可以进一步意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指令处理器完成，所述的程序可以存储于计算机可读存储介质中，所述存储介质是非短暂性(non-transitory)介质，例如随机存取 存储器，只读存储器，快闪存储器，硬盘，固态硬盘，磁带(magnetic tape)，软盘(floppy disk)，光盘(optical disc)及其任意组合。
以上所述，仅为本发明较佳的具体实施方式，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，可轻易想到的变化或替换，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该以权利要求的保护范围为准。

Claims (19)

  1. 一种资源调度方法，其特征在于，所述方法应用于演进型多媒体广播多播业务eMBMS中，所述方法包括：
    调度器接收节目源服务器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的业务区域的标识SAI；
    根据所述SAI,向所述SAI对应的基站发送所述会话开始请求消息；
    接收所述基站根据所述会话开始请求消息发送的会话开始响应消息；
    根据所述会话开始响应消息，将所述基站加入互联网协议IP多播组；
    向所述基站发送资源调度消息，所述资源调度消息中携带为所述节目源分配的多媒体广播多播业务同频网区域MA资源的信息；
    接收所述基站根据所述资源调度消息发送的资源调度响应消息。
  2. 如权利要求1所述的方法，其特征在于，所述调度器接收节目源服务器发送的会话开始请求消息之前，所述方法还包括：
    所述调度器接收所述节目源服务器发送的MA状态请求消息，所述MA状态请求消息中携带所述SAI；
    根据所述SAI，查找所述SAI对应的MA的状态，所述状态用于反映所述MA的资源使用情况；
    向所述节目源服务器发送MA状态响应消息，所述MA状态响应消息中携带所述MA的状态的信息，以使所述节目源服务器根据所述MA的状态，选择单播方式或广播方式启动一个会话。
  3. 如权利要求2所述的方法，其特征在于，所述调度器接收节目源服务器发送的会话开始请求消息，包括：
    调度器接收节目源服务器发送的会话开始请求消息，所述会话开始请求消息用于以广播方式启动一个会话；
    所述向所述基站发送资源调度消息之前，所述方法还包括：
    根据所述节目源待广播的节目的优先级和所述MA的资源使用情况进行节 目准入和映射；
    对于准入和映射成功的至少一个节目，进行MA空口资源分配。
  4. 如权利要求1所述的方法，其特征在于，所述调度器接收节目源服务器发送的会话开始请求消息，包括：
    调度器接收节目源服务器通过广播多播业务中心发送的会话开始请求消息。
  5. 一种资源调度方法，其特征在于，所述方法应用于演进型多媒体广播多播业务eMBMS中，所述方法包括：
    节目源服务器向调度器发送会话开始请求消息，所述会话开始请求消息中携带节目源对应的业务区域的标识SAI，以使所述调度器根据所述SAI,为所述节目源分配多媒体广播多播业务同频网区域MA资源。
  6. 如权利要求5所述的方法，其特征在于，所述节目源服务器向调度器发送会话开始请求消息之前，所述方法还包括：
    所述节目源服务器向所述调度器发送MA状态请求消息，所述MA状态请求消息中携带所述SAI；
    接收所述调度器发送的MA状态响应消息，所述MA状态响应消息中携带所述SAI对应的MA的状态的信息，所述状态用于反映所述MA的资源使用情况；
    所述节目源服务器根据所述MA的状态，选择单播方式或广播方式启动一个会话。
  7. 如权利要求6所述的方法，其特征在于，所述节目源服务器根据所述MA的状态，选择单播方式或广播方式启动一个会话，包括：
    当所述MA的状态反映出所述MA的资源使用情况满足预设条件，并且，所述MA下的节目点播率超过预设阈值时，选择以广播方式启动一个会话。
  8. 如权利要求5所述的方法，其特征在于，所述节目源服务器向调度器发送会话开始请求消息，包括：
    节目源服务器通过广播多播业务中心向调度器发送会话开始请求消息。
  9. 一种资源调度方法，其特征在于，所述方法应用于演进型多媒体广播多播业务eMBMS中，所述方法包括：
    基站接收调度器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的业务区域的标识SAI；
    根据所述会话开始请求消息向所述调度器发送会话开始响应消息；
    接收所述调度器发送的资源调度消息，所述资源调度消息中携带为所述节目源分配的多媒体广播多播业务同频网区域MA资源的信息；
    根据所述资源调度消息向所述调度器发送资源调度响应消息。
  10. 一种调度器，其特征在于，所述调度器应用于演进型多媒体广播多播业务eMBMS中，所述调度器包括：接收单元、处理单元和发送单元；
    所述接收单元，用于接收节目源服务器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的业务区域的标识SAI；
    所述发送单元，用于根据所述接收单元接收的所述SAI,向所述SAI对应的基站发送所述会话开始请求消息；
    所述接收单元，还用于接收所述基站根据所述会话开始请求消息发送的会话开始响应消息；
    所述处理单元，用于根据所述接收单元接收的会话开始响应消息，将所述基站加入互联网协议IP多播组；
    所述发送单元，还用于向所述基站发送资源调度消息，所述资源调度消息中携带为所述节目源分配的多媒体广播多播业务同频网区域MA资源的信息；
    所述接收单元，还用于接收所述基站根据所述资源调度消息发送的资源调度响应消息。
  11. 如权利要求10所述的调度器，其特征在于：
    所述接收单元，还用于在接收节目源服务器发送的会话开始请求消息之 前，接收所述节目源服务器发送的MA状态请求消息，所述MA状态请求消息中携带所述SAI；
    所述处理单元，还用于根据所述接收单元接收的所述SAI，查找所述SAI对应的MA的状态，所述状态用于反映所述MA的资源使用情况；
    所述发送单元，还用于向所述节目源服务器发送MA状态响应消息，所述MA状态响应消息中携带所述MA的状态的信息，以使所述节目源服务器根据所述MA的状态，选择单播方式或广播方式启动一个会话。
  12. 如权利要求11所述的调度器，其特征在于，所述接收单元，具体用于接收节目源服务器发送的会话开始请求消息，所述会话开始请求消息用于以广播方式启动一个会话；
    所述处理单元，还用于在所述发送单元向所述基站发送资源调度消息之前，根据所述节目源待广播的节目的优先级和所述MA的资源使用情况进行节目准入和映射；对于准入和映射成功的至少一个节目，进行MA空口资源分配。
  13. 如权利要求10所述的调度器，其特征在于，所述接收单元，具体用于接收节目源服务器通过广播多播业务中心发送的会话开始请求消息。
  14. 一种节目源服务器，其特征在于，所述节目源服务器应用于演进型多媒体广播多播业务eMBMS中，所述节目源服务器包括：发送单元；
    所述发送单元，用于向调度器发送会话开始请求消息，所述会话开始请求消息中携带节目源对应的业务区域的标识SAI，以使所述调度器根据所述SAI,为所述节目源分配多媒体广播多播业务同频网区域MA资源。
  15. 如权利要求14所述的节目源服务器，其特征在于，所述发送单元，还用于在向调度器发送会话开始请求消息之前，向所述调度器发送MA状态请求消息，所述MA状态请求消息中携带所述SAI；
    所述节目源服务器还包括：接收单元和处理单元；
    所述接收单元，用于接收所述调度器发送的MA状态响应消息，所述MA状态响应消息中携带所述SAI对应的MA的状态的信息，所述状态用于反映所 述MA的资源使用情况；
    所述处理单元，用于根据所述接收单元接收的MA的状态，选择单播方式或广播方式启动一个会话。
  16. 如权利要求15所述的节目源服务器，其特征在于，所述处理单元，具体用于当所述接收单元接收的MA的状态反映出所述MA的资源使用情况满足预设条件，并且，所述MA下的节目点播率超过预设阈值时，选择以广播方式启动一个会话。
  17. 如权利要求14所述的节目源服务器，其特征在于，所述发送单元，具体用于通过广播多播业务中心向调度器发送会话开始请求消息。
  18. 一种基站，其特征在于，所述基站应用于演进型多媒体广播多播业务eMBMS中，所述基站包括：发送单元和接收单元；
    所述接收单元，用于接收调度器发送的会话开始请求消息，所述会话开始请求消息中携带节目源对应的业务区域的标识SAI；
    所述发送单元，用于根据所述接收单元接收的会话开始请求消息向所述调度器发送会话开始响应消息；
    所述接收单元，还用于接收所述调度器发送的资源调度消息，所述资源调度消息中携带为所述节目源分配的多媒体广播多播业务同频网区域MA资源的信息；
    所述发送单元，还用于根据所述接收单元接收的资源调度消息向所述调度器发送资源调度响应消息。
  19. 一种调度系统，其特征在于，所述调度系统应用于演进型多媒体广播多播业务eMBMS中，所述调度系统包括：如权利要求10至13任一项所述的调度器、如权利要求14至17任一项所述的节目源服务器和如权利要求18所述的基站。
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