WO2011106972A1 - 多播广播业务的接收方法和系统 - Google Patents
多播广播业务的接收方法和系统 Download PDFInfo
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- WO2011106972A1 WO2011106972A1 PCT/CN2010/077236 CN2010077236W WO2011106972A1 WO 2011106972 A1 WO2011106972 A1 WO 2011106972A1 CN 2010077236 W CN2010077236 W CN 2010077236W WO 2011106972 A1 WO2011106972 A1 WO 2011106972A1
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- WIPO (PCT)
- Prior art keywords
- terminal
- broadcast service
- multicast broadcast
- base station
- message
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present invention relates to the field of communications, and in particular to a method and system for receiving a multicast broadcast service.
- WiMAX Worldwide Interoperability for Microwave Access
- ABS Advanced Base Station
- Advanced base stations support multi-carrier operation, that is, use a single Media Access Control (MAC).
- the physical layer Physical, abbreviated as PHY
- PHY Physical, abbreviated as PHY
- Carriers of advanced base stations supporting multiple carriers can be divided into fully configured carriers and partially configured carriers.
- a fully configured carrier refers to a carrier configured with all control channels, including a synchronization channel, a broadcast channel, a multicast channel, and a unicast channel, and also includes channels related to information and parameters of multi-carrier operation and other carriers.
- Partially configured carrier refers to a carrier that is only configured with a control channel for supporting downlink data transmission in multi-carrier operation.
- the fully configured carrier can be used as the primary carrier or the secondary carrier of the terminal supporting the multi-carrier, and the partially configured carrier can only serve as the secondary carrier of the terminal.
- Each terminal supporting multiple carriers can only have one primary carrier, and may have one or more secondary carriers or no secondary carriers.
- the base station needs to allocate a secondary carrier for the terminal, and then activate the secondary carrier according to its service condition.
- the existing protocol specifies the following two modes of operation: carrier aggregation and carrier conversion.
- the carrier aggregation means that: the terminal always maintains a physical connection with its primary carrier and monitors the control information transmitted thereon; the carrier conversion refers to: the terminal converts the physical connection from the primary carrier to the secondary carrier through the indication information of the base station, and After being connected to the secondary carrier, the terminal does not need to maintain reception and transmission on the primary carrier.
- Multicast Broadcast Service is on the mobile network.
- the network provides a point-to-multipoint service in which data sources transmit data to multiple users, which enables network resource sharing and improves utilization of air interface resources.
- the advanced base station needs to support enhanced multicast broadcast service (Enhanced MBS, referred to as E-MBS), that is, it needs to realize multicast broadcast of high-speed multimedia service, and also needs to reduce power consumption of the terminal. Therefore, multi-carrier and E-MBS are combined to achieve high throughput and high rate requirements.
- E-MBS enhanced multicast broadcast service
- E-MBS services There are two ways to carry E-MBS services on multiple carriers: One is the dedicated carrier mode, that is, the E-MBS service monopolizes all time-frequency resources on a certain carrier; the other is the hybrid carrier mode, that is, E- The MBS service shares the time-frequency resources on the carrier with the unicast service.
- the base station or the terminal establishes one or more multicast broadcast service connections for the terminal by initiating the service flow establishment process, and carries the parameter information of the established multicast broadcast service connection in the service flow setup message.
- the resource location information of the corresponding multicast broadcast service mapping message (AAI_EMBS-MAP) is obtained by parsing the multicast broadcast service configuration message (AAI_E-MBS-CFG). And modulating the encoded information, and then parsing the multicast broadcast service mapping message on the corresponding resource location information, thereby obtaining resource location information and modulation and coding information of the multicast broadcast service data, and finally receiving the corresponding multicast broadcast service data.
- the multicast broadcast service configuration message, the multicast broadcast service mapping message, and the multicast broadcast service data may be discontinuous in location distribution.
- the multicast broadcast service configuration message is sent once by a multi-cast broadcast service scheduling interval (MSI), and the multicast broadcast service mapping message is sent once for each MSI.
- MSI multi-cast broadcast service scheduling interval
- the multicast broadcast service configuration message and the multicast broadcast service mapping message are collectively referred to as a multicast broadcast service control message.
- a multicast broadcast service connection established by a terminal may be carried on multiple different carriers. If a terminal with carrier conversion capability needs to receive a multicast broadcast service that has already been established, it needs to be between multiple carriers.
- the terminal needs to leave its primary carrier, and correspondingly, the base station is at the terminal.
- the terminal should be prevented from scheduling the unicast service on the primary carrier.
- the related art has a problem in that the terminal may establish multiple multicast broadcast service connections. As shown in FIG. 1, the terminal establishes three E-MBS connections on the E-MBS carrier 1, which are respectively E-MBS connections.
- E-MBS connection 2 and E-MBS connection 3 but the terminal currently only chooses to receive data from E-MBS connection 1, ie the terminal only in multicast broadcast service configuration message, multicast broadcast service mapping message and E-MBS
- the connection 1 data When the connection 1 data is transmitted, it will leave the primary carrier and switch to E-MBS carrier 1.
- base The station judges according to the multicast broadcast service connection established by the terminal, and the base station considers that the terminal is not on the primary carrier at the E-MBS connection 2 and the E-MBS connection 3 data transmission moment, which will result in the terminal's primary carrier.
- the resources are very wasteful, which makes it difficult for the base station to perform unicast service scheduling for the terminal on the primary carrier.
- a primary object of the present invention is to provide a method and system for receiving a multicast broadcast service, to at least solve the above-mentioned related art, in which the base station cannot determine whether the terminal leaves the primary carrier, and converts to the carrier that carries the multicast broadcast service, and receives the multicast.
- the problem of the broadcasting business is to provide a method and system for receiving a multicast broadcast service, to at least solve the above-mentioned related art, in which the base station cannot determine whether the terminal leaves the primary carrier, and converts to the carrier that carries the multicast broadcast service, and receives the multicast.
- a method for receiving a multicast broadcast service including: a terminal sending a message to a base station, where the message carries at least one of the following information: indication information of the terminal leaving the primary carrier, and more to be received Broadcast identification information of the broadcast service.
- the method further includes: the base station receiving the message; the base station sending a feedback message to the terminal, where the feedback message carries an indication for allowing or denying the terminal to leave the primary carrier. information.
- the message sent by the terminal to the base station carries time information, which is used to indicate the time when the terminal requests to leave the primary carrier.
- the feedback message when the feedback message carries information for indicating that the terminal is allowed to leave the primary carrier, the feedback message further carries time information, where the time information is used to indicate that the base station allows the terminal to leave the primary carrier.
- the method further includes: the terminal leaving the primary carrier at the time, and switching to the carrier carrying the multicast broadcast service.
- the time information includes one of the following: a superframe offset, a superframe number, a frame number, a frame offset, a combination of a superframe number and a frame number, a combination of a superframe offset and a frame offset, a superframe or Frame bit map.
- the method further includes: determining, by the base station, the time when the terminal leaves the primary carrier according to the identifier information of the multicast broadcast service to be received, where the multicast broadcast to be received is The identification information of the service is used to notify the foregoing base station that the terminal is waiting to be connected.
- the received multicast broadcast service connection, the identifier information of the multicast broadcast service to be received includes at least one or any combination of the following: a multicast broadcast service area identifier, a combination of a multicast broadcast service station identifier and a stream identifier, and a multicast broadcast. Business connection bitmap.
- the method further includes: when the connection of the multicast broadcast service to be received by the terminal is changed, the terminal updates the identifier information of the multicast broadcast service to be received; The identification information of the multicast broadcast service is sent to the above base station.
- the method further includes: receiving, by the terminal, the multicast broadcast service sent by the base station on the carrier carrying the multicast broadcast service; and the time of the terminal in addition to receiving the multicast broadcast service Returning to the primary carrier; after the base station determines that the terminal returns the primary carrier, the base station schedules a unicast service for the terminal on the primary carrier.
- the base station determines that the terminal returns to the primary carrier, and includes one of the following: the terminal sends the return information to the base station after returning to the primary carrier, where the return information is used to indicate that the terminal returns to the primary carrier; Determining whether the terminal returns to the primary carrier according to the leaving time information and the staying time information, wherein the leaving time information is used to indicate a time when the terminal leaves the primary carrier, and the staying time information is And determining, by the base station, a time of staying on the carrier carrying the multicast broadcast service; and determining, by the base station, the time when the terminal returns to the primary carrier according to the identifier information of the multicast broadcast service to be received sent by the terminal.
- the terminal receiving the multicast broadcast service sent by the base station on the carrier carrying the multicast broadcast service includes at least one of: receiving a multicast broadcast service configuration message; receiving a multicast broadcast service mapping message; receiving the multicast broadcast Business data.
- a receiving system for a multicast broadcast service including: a terminal and a base station, where the terminal includes: a sending unit, configured to send a message to the base station, where the message carries the following information At least one of: the indication information of the terminal leaving the primary carrier, and the identifier information of the multicast broadcast service to be received; the receiving unit, configured to receive, by using the carrier carrying the multicast broadcast service, the multicast broadcast sent by the base station business.
- the foregoing base station includes: a receiving unit, configured to receive the message, and a scheduling unit, configured to: after determining that the terminal returns the primary carrier from the carrier that carries the multicast broadcast service, on the primary carrier, The broadcast service, wherein the terminal returns the primary carrier from the carrier of the seven-carrier multicast service at a time other than receiving the multicast broadcast service.
- the invention has the following beneficial effects:
- the terminal sends the information to indicate that the terminal leaves the primary carrier, and the base station clears the time for the terminal to not perform unicast service scheduling on the primary carrier, thereby implementing reasonable scheduling of the unicast service and saving resources on the primary carrier; Receiving, by the terminal, the primary carrier from the carrier carrying the multicast broadcast service on the gap between receiving the multicast broadcast service data and the multicast broadcast service control message, so that the base station can receive the multicast broadcast service data and the multicast broadcast service control message Outside the time, the terminal performs unicast service scheduling on the primary carrier, so that the terminal realizes the alternate reception of the unicast service and the multicast service, fully utilizes resources, and improves resource utilization.
- FIG. 1 is a schematic diagram of a multicast broadcast service connection according to the related art
- FIG. 2 is a schematic diagram of a receiving system of a multicast broadcast service according to an embodiment of the present invention
- FIG. 3 is a multicast according to an embodiment of the present invention.
- FIG. 4 is a preferred flowchart 1 of a method for receiving a multicast broadcast service according to an embodiment of the present invention
- FIG. 5 is a flowchart of a preferred method for receiving a multicast broadcast service according to an embodiment of the present invention
- FIG. 6 is a third preferred flowchart of a method for receiving a multicast broadcast service according to an embodiment of the present invention
- FIG. 7 is a fourth preferred flowchart of a method for receiving a multicast broadcast service according to an embodiment of the present invention
- a preferred flowchart of the method for receiving a multicast broadcast service according to an embodiment of the present invention is shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- the terminal refers to a terminal having carrier switching capability, for example, having only one terminal The terminal of the RF channel.
- the receiving system of the multicast broadcast service includes: a terminal 21 and a base station 22.
- the terminal 21 includes: a transmitting unit 211 and a receiving unit 212.
- the sending unit 211 sends a message to the base station 22, where the message carries at least one of the following information: the indication information of the terminal 21 leaving the primary carrier, and the identification information of the multicast broadcast service to be received.
- the receiving unit 212 receives the multicast broadcast service data or the multicast broadcast service control message from the base station 22 on the carrier carrying the multicast broadcast service.
- the multicast broadcast service control message includes at least one of the following: a multicast broadcast service configuration message, and a multicast broadcast service mapping message.
- the terminal sends a message to instruct the terminal to leave the primary carrier, and the base station clarifies the time for the terminal to not perform unicast service scheduling on the primary carrier, thereby saving resources on the primary carrier.
- the foregoing base station 22 includes: a receiving unit 221 and a scheduling unit 222. In the working state, the receiving unit 221 receives the above message sent by the terminal.
- the scheduling unit 222 after determining that the terminal returns to the primary carrier, schedules a unicast service for the terminal on the primary carrier, where the terminal may return the primary carrier from the carrier carrying the multicast broadcast service at a time other than receiving the multicast broadcast service.
- receiving the multicast broadcast service includes at least one of: receiving a multicast broadcast service mapping message, receiving a multicast broadcast service configuration message, and receiving the multicast broadcast service data.
- the terminal returns the primary carrier from the carrier carrying the multicast broadcast service on the gap between receiving the multicast broadcast service data and the multicast broadcast service control message, so that the base station can receive the multicast broadcast service data and the multicast broadcast service control.
- the terminal performs unicast service scheduling on the primary carrier, thereby fully utilizing resources and improving resource utilization.
- the receiving system of the multicast broadcast service shown in FIG. 2 can use the receiving method of the multicast broadcast service as shown in FIG. 3.
- the method for receiving a multicast broadcast service according to the embodiment of the present invention includes: The terminal sends a message to the base station, where the message carries at least one of the following information: indication information of the terminal leaving the primary carrier, and multicast to be received. Identification information of the broadcast service.
- the terminal sends the foregoing information to the base station before the terminal leaves the primary carrier and switches to the carrier that carries the multicast broadcast service.
- the base station carries the above information to perform unicast service scheduling on the terminal.
- the different flows of the base station to implement the above process are described in detail below by way of embodiments.
- Embodiment 1 The base station and the terminal establish one or more multicast broadcast service connections for the terminal by using a service flow setup message (AAI-DSA-RSP message or AAI-DSA-REQ message).
- the terminal alternately switches between the primary carrier and the carrier carrying the multicast broadcast service, thereby alternately receiving the unicast service and the multicast broadcast service. As shown in FIG.
- the terminal A message (for example, an AAI_EMBS-REV-IND message) is sent to the base station, indicating that the base station terminal will leave the primary carrier and receive the multicast broadcast service (step S41).
- the AAI EMBS-REV-IND message carries an action identifier (for example, an Action code), and the value of the action identifier is 0, indicating that the terminal will leave the primary carrier, and a value of 1 indicates that the terminal returns the primary carrier.
- an action identifier for example, an Action code
- the terminal carries time information in the foregoing AAI EMBS-REV-IND message, and is used to indicate a time (Action time) that the terminal requests to leave the primary carrier, where the time information may include one of the following: a superframe offset, Superframe number, frame number, frame offset, combination of superframe number and frame number, combination of superframe offset and frame offset, superframe or frame bitmap.
- the base station after receiving the foregoing message, sends a feedback message to the terminal (step S42), where the feedback message carries information for indicating that the terminal is allowed to leave or reject the primary carrier.
- the base station may also carry time information in the feedback message, where the time information is used to indicate the time when the terminal is allowed to leave the primary carrier.
- the time information may include one of the following: a superframe offset, a superframe number, a frame number, a frame offset, a combination of a superframe number and a frame number, a combination of a superframe offset and a frame offset. , superframe or frame bitmap.
- the base station does not perform the unicast service on the primary carrier for the terminal after sending the feedback message. Scheduling, the terminal can perform carrier conversion at any time after receiving the feedback message, that is, leaving the primary carrier and switching to the carrier carrying the multicast broadcast service.
- the terminal can perform carrier conversion at any time after receiving the feedback message, that is, leaving the primary carrier and switching to the carrier carrying the multicast broadcast service.
- the base station does not carry the time information in the feedback message, indicating that the base station agrees to the time when the terminal requests to leave.
- the terminal can leave the primary carrier at the departure time requested in the AAI EMBS-REV-IND message, and switch to the carrier carrying the multicast broadcast service to receive the multicast broadcast service data or the multicast broadcast service control message.
- the terminal carries the time when the request is left in the AAI_EMBS-REV-IND message
- the base station also carries the time information in the feedback message, but the time information is different from the time when the terminal requests to leave, indicating that the base station indicates the terminal is in feedback. The moment in the message leaves the primary carrier.
- the terminal if the terminal does not carry the request to leave in the AAI EMBS-REV-IND message, the base station carries time information in the feedback message, indicating that the base station instructs the terminal to perform carrier conversion at the time in the feedback message.
- the terminal receives the multicast broadcast service configuration message, the multicast broadcast service mapping message or the multicast broadcast service data on the carrier (step S43). The terminal returns the primary carrier from the carrier carrying the multicast broadcast service at a time other than receiving the multicast broadcast service.
- the terminal sends an AAI EMBS-REV-IND message to the base station on the primary carrier, where the carried action identifier indicates that the terminal has returned the primary carrier (step S44).
- the terminal indicates that the terminal has returned to the primary carrier by sending a codeword of the bandwidth request to the base station, or sending a bandwidth request header, or sending a bandwidth request message on the primary carrier.
- the terminal sends a bandwidth request header or a bandwidth request message and carries information that has returned the primary carrier.
- the base station after receiving the foregoing AAI_EMBS-REV-IND message, the base station sends a feedback message to the terminal for confirmation, and performs unicast service scheduling on the primary carrier for the terminal (step S45).
- step S45 the base station sends a feedback message to the terminal for confirmation, and performs unicast service scheduling on the primary carrier for the terminal.
- Action code 1 0 Leave the primary carrier
- Action time Table 3 shows the parameters of the feedback message sent by the base station to the terminal.
- the message and the feedback message may respectively add the foregoing parameter to the existing control message, and may also be a new control message.
- the primary carrier from the carrier carrying the multicast broadcast service on the gap between receiving the multicast broadcast service data and the multicast broadcast service control message, so that the base station can receive the multicast broadcast service data and the multicast broadcast service control message Outside the time, the terminal performs unicast service scheduling on the primary carrier, making full use of resources and improving resource utilization.
- Embodiment 2 The base station and the terminal establish one or more multicast broadcast service connections for the terminal by using a service flow establishment message (AAI-DSA-RSP message or AAI-DSA-REQ message).
- the terminal alternately switches between the primary carrier and the carrier carrying the multicast broadcast service, thereby alternately receiving the unicast service and the multicast broadcast service.
- the terminal sends the AAI_EMBS.
- the -REV-IND message (considered as the leave indication message) is sent to the base station to indicate that the base station terminal will leave the primary carrier (step S51).
- the terminal carries time information (also referred to as leaving time information) in the AAI-EMBS-REV message, and is used to indicate the time (Action time) that the terminal requests to leave the primary carrier.
- the AAI-EMBS-REV message may further carry the stay time information, which is used to indicate the duration (Date) of the terminal on the carrier carrying the multicast broadcast service.
- the base station determines the time when the terminal returns to the primary carrier according to the values of the action time and the duration of the duration information.
- the base station sends a feedback message to the terminal (step S52), where the feedback message carries information for indicating that the terminal is allowed to or denied the leaving the primary carrier.
- the base station may also carry time information in the feedback message for indicating the time when the terminal is allowed to leave the primary carrier.
- the base station feedback message determines whether the terminal can leave the primary carrier and the time of leaving the primary carrier, so that the base station can flexibly control the terminal, and the base station can appropriately control the terminal when considering the overall resource, so that Better use of system resources.
- Table 5 The parameter examples of the above AAI_EMBS-REV-IND message are shown in Table 5.
- the terminal After switching to the carrier carrying the multicast broadcast service, the terminal receives the multicast broadcast service data or the multicast broadcast service control message on the carrier carrying the multicast broadcast service (step S53), and may receive the multicast broadcast service.
- the time is returned to the primary carrier.
- the base station can determine the time when the terminal returns to the primary carrier according to the values of the Action time and the Duration.
- the base station can perform unicast service scheduling on the primary carrier after the terminal returns to the primary carrier (step S54), thereby fully utilizing the resources.
- Embodiment 3 The base station and the terminal establish one or more multicast broadcast service connections for the terminal by using a service flow setup message (AAI-DSA-RSP message or AAI-DSA-REQ message).
- the terminal alternately switches between the primary carrier and the carrier carrying the multicast broadcast service, thereby alternately receiving the unicast service and the multicast broadcast service. As shown in FIG.
- the terminal when the terminal leaves the primary carrier and switches to the carrier carrying the multicast broadcast service, the terminal sends an AAI_EMBS-REV-IND message to the base station, indicating that the base station terminal will leave the primary carrier (step S61) felicit terminal in AAI_EMBS-
- the REV-IND message carries: an action identifier (for example, an action code), and the value of the action identifier indicates that the terminal will leave the primary carrier; the identifier information of the multicast broadcast service to be received, where the identifier of the multicast broadcast service
- the information may include a combination of a multicast broadcast area identifier (E-MBS Zone ID), a multicast broadcast station identifier (MSTID), and a flow identifier (FID).
- the base station receives the to-be-received After the identifier information of the multicast broadcast service is determined, determining, according to the identifier information of the multicast broadcast service, a time when the terminal switches to the carrier receiving the multicast broadcast configuration message, the multicast broadcast mapping message, and the multicast broadcast service data that carries the multicast broadcast service, and The moment when the terminal returns to the primary carrier, so that the base station can perform unicast service scheduling on the primary carrier for the terminal.
- the terminal carries the time information in the AAI_EMBS-REV-IND message, and is used to indicate the time when the terminal requests to leave the primary carrier.
- the base station after receiving the foregoing message, sends a feedback message to the terminal (step S62), where the feedback message carries useful information. Instructing to allow or reject the information that the terminal leaves the primary carrier.
- the base station may further carry time information in the feedback message for indicating the time when the terminal is allowed to leave the primary carrier.
- the feedback message determines whether the terminal can leave the primary carrier and the time of leaving the primary carrier, so that the base station can flexibly control the terminal, and the base station can appropriately control the terminal in consideration of the overall resource, so as to better Utilize system resources.
- Table 6 The parameter examples of the above AAI EMBS-REV-IND message are shown in Table 6. Table 6
- the terminal After switching to the carrier carrying the multicast broadcast service, the terminal receives the multicast broadcast service data or the multicast broadcast service control message on the carrier (step S63).
- the terminal sends an AAI_EMBS-REV-IND message to the base station on the primary carrier, where the carried action identifier indicates that the terminal returns the primary carrier.
- the base station can determine the idle time period of the terminal in addition to receiving the multicast broadcast service according to the identification information of the multicast broadcast service in the AAI EMBS-REV-IND message, so the base station is in addition to the multicast broadcast service configuration message and the multicast broadcast.
- the service map message and the idle time period outside the multicast broadcast service data transmission time are the terminal scheduling the unicast service on the primary carrier (step 4 S64).
- the primary carrier from the carrier carrying the multicast broadcast service on the gap between receiving the multicast broadcast service data and the multicast broadcast service control message, so that the base station can receive the multicast broadcast service data and the multicast broadcast service control message Outside the time, the terminal performs unicast service scheduling on the primary carrier, making full use of resources and improving resource utilization.
- Embodiment 4 The base station and the terminal establish one or more multicast broadcast service connections for the terminal by using a service flow setup message (AAI-DSA-RSP message or AAI-DSA-REQ message).
- the terminal alternately switches between the primary carrier and the carrier carrying the multicast broadcast service, thereby alternately receiving the unicast service and the multicast broadcast service.
- the terminal sends an AAI_EMBS-REV-IND message (referred to as a leave indication message) to the base station, and is used to indicate that the base station terminal will leave the primary carrier. (Step S71).
- the terminal carries the identifier information of the multicast broadcast service to be received in the AAI-EMBS-REV message, where the identifier information of the multicast broadcast service may include a multicast broadcast area identifier (E-MBS Zone ID), and the multicast broadcast A combination of a Station ID (MSTID) and a Flow ID (FID).
- E-MBS Zone ID multicast broadcast area identifier
- MSTID Station ID
- FID Flow ID
- the base station sends a feedback message to the terminal (step S72), and the message instance is shown in Table 10.
- the feedback message carries information for indicating that the terminal is allowed or denied to leave the primary carrier.
- the base station may also carry time information in the feedback message for indicating the time when the terminal is allowed to leave the primary carrier.
- the base station feedback message determines whether the terminal can leave the primary carrier and the time of leaving the primary carrier, so that the base station can flexibly control the terminal, and the base station can appropriately control the terminal when considering the overall resource, so that Better use of system resources.
- Table 8 The parameter examples of the above AAI EMBS-REV-IND message are shown in Table 8. Table 8
- the terminal After switching to the carrier carrying the multicast broadcast service, the terminal receives the multicast broadcast service data and/or the multicast broadcast service control message on the carrier (step S73). Since the base station acquires the idle time period according to the identification information of the multicast broadcast service in the AAI_EMBS-REV-IND message, the base station transmits the time except the multicast broadcast service configuration message, the multicast broadcast service mapping message, and the multicast broadcast service. The outer idle time period is that the terminal schedules the unicast service on the primary carrier (step S74). When the terminal changes the received multicast broadcast service, the terminal updates the identifier information of the multicast broadcast service to be received.
- the terminal will send the AAI_EMBS-REV-IND message to the base station again, where the AAI_EMBS-REV-IND message carries the identifier information of the updated multicast broadcast service (step S75).
- the base station according to the updated identification information of the multicast broadcast service is The terminal schedules the unicast service on the primary carrier. Specifically, when the value of N in the table 8 is zero, it indicates that the terminal stops receiving the multicast broadcast service.
- the terminal may also carry the dedicated indication information in the AAI_EMBS-REV-IND message. It is used to instruct the terminal to start, change and stop the multicast broadcast service reception. At this time, the parameter examples of the AAI EMBS-REV-IND message are shown in Table 9. Table 9
- the action code may include the value when the value is ObO.
- Embodiment 5 The base station and the terminal establish a message (AAI-DSA-RSP message or AAI-DSA-REQ message) through the service flow, and establish one or more multicast broadcasts for the terminal. Business connection.
- the terminal alternately switches between the primary carrier and the carrier carrying the multicast broadcast service, thereby alternately receiving the unicast service and the multicast broadcast service.
- the terminal when the terminal leaves the primary carrier and switches to the carrier carrying the multicast broadcast service, the terminal sends an AAI_EMBS-REV-IND message (referred to as a leave indication message) to the base station, and is used to indicate that the base station terminal will leave the primary carrier. (Step S81).
- the terminal carries the identifier information of the multicast broadcast service to be received in the AAI_EMBS-REV-IND message, where the identifier information of the multicast broadcast service includes the multicast broadcast service area identifier (E-MBS Zone ID) and the multicast broadcast service connection.
- E-MBS Connection Bitmap Insert Multicast broadcast service bitmap from low to high (or high to low), each bit corresponding to a multicast broadcast service connection to be received.
- the connection to be received is in accordance with MSTID+FID
- the order of the values corresponds to each bit of the bitmap. For example, the MSTID+FID minimum corresponds to the most significant bit of the bitmap, and the MSTID+FID maximum corresponds to the highest bit of the bitmap.
- Each bit takes a value of one, indicating the terminal.
- the multicast broadcast service connection is about to be received or received, and the value of zero indicates that the connection is not received or the terminal has not established the connection of the multicast broadcast service area, and vice versa. If the terminal and the base station delete one or more multicast broadcasts that have been established.
- the service connection, or establishing a new multicast broadcast service connection the terminal and the base station update the correspondence between the bitmap and the multicast broadcast service connection.
- the base station sends a feedback message to the terminal (step S82), where the feedback message carries time information for indicating that the terminal is allowed to leave or leave the primary carrier.
- the time information is a superframe or a frame bitmap
- each bit in the bitmap corresponds to one or more frames or superframes in an MSI of the multicast broadcast service
- the value is 1 means that the terminal is not allowed to leave the primary carrier within the frame or superframe
- a value of 0 indicates that the terminal is allowed to leave the primary carrier within the frame or superframe (converted to other carriers to receive the multicast broadcast service), and vice versa. Therefore, whether the terminal can leave the primary carrier (whether the value is 0 or 1) and the time of leaving the primary carrier (the frame or superframe corresponding to each bit) can be determined by the time information bitmap carried in the feedback message of the base station.
- the base station After switching to the carrier carrying the multicast broadcast service, the terminal receives the multicast broadcast service data and/or the multicast broadcast service control message on the carrier (step S83). After receiving the identifier information of the multicast broadcast service to be received, the base station may determine, according to the identifier information of the multicast broadcast service, that the terminal converts to the carrier receiving multicast broadcast configuration message, the multicast broadcast mapping message, and the carrier that carries the multicast broadcast service.
- the time at which the broadcast service data is broadcast, and the time at which the terminal returns to the primary carrier, enables the base station to perform unicast service scheduling on the primary carrier for the terminal (step S84). If the terminal replaces the multicast broadcast service connection to be received, the terminal transmits an updated multicast broadcast service connection bit map to the base station (step S85).
- the terminal carries time information in the AAI_EMBS-REV-IND message, and is used to indicate a moment when the terminal requests to leave the primary carrier.
- the terminal does not receive or the terminal has not established the connection of the multicast broadcast service area.
- the terminal is ⁇ ! Retrieving or receiving the multicast broadcast service connection
- the terminal can return the primary carrier in an idle time period other than receiving the multicast broadcast service, so that the base station can implement the unicast service for the terminal, thereby fully utilizing the resources.
- the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
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Abstract
本发明公开了一种多播广播业务的接收方法和系统,其中,多播广播业务的接收方法包括:终端向基站发送消息,上述消息携带有以下信息至少之一:终端离开主载波的指示信息、待接收的多播广播业务的标识信息。通过终端发送信息指示终端离开主载波,基站明确了在主载波上对终端不进行单播业务调度的时间,从而解决了基站无法确定终端是否离开主载波的问题,实现了单播业务的合理调度,并节省了主载波上的资源。
Description
多播广播业务的接收方法和系统 技术领域 本发明涉及通信领域, 具体而言, 涉及一种多播广播业务的接收方法和 系统。 背景技术 宽带无线接入啟波存取全球互通 ( Worldwide Interoperability for Microwave Access , 简称为 WiMAX )技术是基于无线城域网电气和电子工程 标准的宽带无线技术。 在最新的 WiMAX技术中, 出现了支持先进协议的基 站 (Advanced Base Station, 简称为 ABS ), 先进基站支持多载波操作, 即釆 用单一的媒体接入控制实体( Media Access Control, 简称为 MAC )控制包括 多个信道的物理层 (Physical, 简称为 PHY ), 每个信道称为一个载波, 每个 载波的带宽可以不同, 且可以属于连续的或不连续的频带。 支持多载波的先进基站的载波可以分为全配置载波和部分配置载波。 全 配置载波是指配置了所有控制信道的载波, 包括同步信道、 广播信道、 组播 信道和单播信道,还包括与多载波操作及其他载波的信息和参数相关的信道。 部分配置载波是指只配置了在多载波操作中用于支持下行数据传输的控制信 道的载波。 全配置载波可以作为支持多载波的终端的主载波或者辅载波, 部 分配置载波仅可以作为上述终端的辅载波。 每个支持多载波的终端只能有一 个主载波, 可以有一个或多个辅载波, 也可以没有辅载波。 支持多载波的终 端如果使用辅载波, 基站需要为其分配辅载波, 后续根据其的业务情况激活 辅载波。 对于支持多载波的终端, 现有协议规定了如下两种操作模式: 载波聚合 和载波转换。 载波聚合是指: 上述终端总与其主载波保持物理连接, 并监控 其上传输的控制信息; 载波转换是指: 终端通过基站的指示信息, 将其物理 连接由主载波转换至辅载波, 并且在与辅载波连接后, 该终端无需维持在主 载波的接收和发送。 多播广播业务 ( Multicast Broadcast Service, 简称为 MBS ) 是在移动网
络中提供一个数据源向多个用户传送数据的点到多点业务, 能够实现网络资 源共享, 提高空中接口资源的利用率。 先进基站需要支持增强型的多播广播 业务(Enhanced MBS , 简称为 E-MBS ), 即既需要实现高速多媒体业务的多 播广播, 同时还需要减小终端的功耗。 因此, 将多载波和 E-MBS 结合, 以 达到高吞吐量、 高速率的要求。 多载波上^载 E-MBS 业务的方式有两种: 一种是专用载波方式, 即 E-MBS 业务独占某个载波上的所有时频资源; 另 一种方式是混合载波方式, 即 E-MBS 业务与单播业务共享载波上的时频资 源。 在相关技术中, 基站或终端通过发起业务流建立流程为终端建立一个或 多个多播广播业务连接, 且在业务流建立消息中携带所建立的多播广播业务 连接的参数信息。 多播广播业务连接建立后, 如果终端需要接收该业务, 首 先通过解析多播广播业务配置消息 ( AAI_E-MBS-CFG ), 获得相应的多播广 播业务映射消息 ( AAI_EMBS-MAP ) 的资源位置信息和调制编码信息, 然 后在相应的资源位置信息上解析多播广播业务映射消息, 从而获得多播广播 业务数据的资源位置信息和调制编码信息, 最终接收到相应的多播广播业务 数据。 相关技术中, 多播广播业务配置消息、 多播广播业务映射消息和多播 广播业务数据在位置分布上可能是不连续的。 多播广播业务配置消息是多个 多播广播业务调度间隔 ( E-MBS Scheduling Interval , 简称 MSI ) 发送一次, 多播广播业务映射消息是每个 MSI发送一次。 在下文中, 将多播广播业务配 置消息、 多播广播业务映射消息统称为多播广播业务控制消息。 在多载波系统中, 终端建立的多播广播业务连接可能承载在多个不同的 载波上, 具有载波转换能力的终端如果需要接收自己已经建立的多播广播业 务, 就需要在多个载波之间进行载波转换, 即在承载多播广播业务的载波上 接收多播广播业务配置消息、 多播广播业务映射消息和多播广播业务数据的 时候, 终端需要离开其主载波, 相应的, 基站在终端接收多播广播业务配置 消息、 多播广播业务映射消息和多播广播业务数据的时间段内应当避免为上 述终端在主载波上调度单播业务。 然而,相关技术存在的问题是, 终端可能建立了多个多播广播业务连接, 如图 1所示,终端在 E-MBS载波 1上建立了三个 E-MBS连接,分别是 E-MBS 连接 1 , E-MBS连接 2和 E-MBS连接 3 ,但是终端当前仅选择接收来自 E-MBS 连接 1的数据, 即终端只在多播广播业务配置消息、 多播广播业务映射消息 和 E-MBS连接 1数据发送时会离开主载波, 转换到 E-MBS载波 1。 如果基
站才艮据终端建立的多播广播业务连接来判断, 则基站会认为终端在 E-MBS 连接 2和 E-MBS连接 3数据发送时刻也不在主载波上, 这样将导致终端的 主载波上的资源有很大浪费, 造成了基站在主载波上为终端进行单播业务调 度的困难。 因此, 终端如何与基站对其即将离开主载波, 转换至 载多播广 播业务的载波接收多播广播业务进行交互, 从而使基站能够合理地为终端进 行单播业务调度是在多载波下终端进行多播广播业务接收时亟待解决的问 题。 发明内容 本发明的主要目的在于提供一种多播广播业务的接收方法和系统, 以至 少解决上述相关技术中基站无法确定终端是否离开主载波, 转换至承载多播 广播业务的载波上接收多播广播业务的问题。 根据本发明的一个方面,提供了一种多播广播业务的接收方法, 其包括: 终端向基站发送消息, 上述消息携带有以下信息至少之一: 终端离开主载波 的指示信息、 待接收的多播广播业务的标识信息。 优选的, 在终端向基站发送消息之后, 上述方法还包括: 上述基站接收 上述消息; 上述基站向上述终端发送反馈消息, 其中, 上述反馈消息携带有 用于指示允许或拒绝上述终端离开上述主载波的信息。 优选的, 上述终端向基站发送的消息中携带有时间信息, 用于指示终端 请求离开主载波的时刻。 优选的, 在上述反馈消息携带用于指示允许上述终端离开上述主载波的 信息时, 上述反馈消息还携带有时间信息, 其中, 该时间信息用于指示上述 基站允许上述终端离开上述主载波的时刻, 在上述基站向上述终端发送反馈 消息之后, 上述方法还包括: 上述终端在上述时刻离开上述主载波, 转换至 上述承载多播广播业务的载波。 优选的, 上述时间信息包括以下之一: 超帧偏移、 超帧号、 帧号、 帧偏 移、 超帧号与帧号的组合、 超帧偏移与帧偏移的组合、 超帧或帧比特图。 优选的, 在终端向基站发送消息之后, 上述方法还包括: 上述基站才艮据 上述待接收的多播广播业务的标识信息确定上述终端离开主载波的时刻, 其 中, 上述待接收的多播广播业务的标识信息用于通知上述基站上述终端待接
收的多播广播业务连接, 上述待接收的多播广播业务的标识信息包括以下至 少之一或任意组合: 多播广播业务区域标识、 多播广播业务站标识和流标识 的组合、 多播广播业务连接比特图。 优选的, 在终端向基站发送消息之后, 上述方法还包括: 在上述终端待 接收的多播广播业务连接改变时, 上述终端更新上述待接收的多播广播业务 的标识信息;上述终端将更新后的多播广播业务的标识信息发送给上述基站。 优选的, 在终端向基站发送消息之后, 上述方法还包括: 上述终端在上 述承载多播广播业务的载波上接收基站发送的多播广播业务; 上述终端在除 接收多播广播业务之外的时间上返回上述主载波; 在上述基站确定终端返回 上述主载波之后, 上述基站在上述主载波上为上述终端调度单播业务。 优选的, 上述基站确定终端返回上述主载波包括以下之一: 上述终端在 返回上述主载波之后向上述基站发送返回信息, 其中, 上述返回信息用于指 示上述终端返回上述主载波; 上述消息中携带有离开时间信息和停留时间信 息, 上述基站根据上述离开时间信息和上述停留时间信息来确定终端是否返 回上述主载波, 其中, 上述离开时间信息用于指示终端离开主载波的时刻, 上述停留时间信息用于指示上述终端在上述承载多播广播业务的载波上的停 留时间; 上述基站才艮据上述终端发送的上述待接收的多播广播业务的标识信 息确定上述终端返回上述主载波的时刻。 优选的, 上述终端在上述承载多播广播业务的载波上接收基站发送的上 述多播广播业务包括以下至少之一: 接收多播广播业务配置消息; 接收多播 广播业务映射消息; 接收多播广播业务数据。 根据本发明的另一方面,提供了一种多播广播业务的接收系统, 其包括: 终端和基站, 其中, 上述终端包括: 发送单元, 用于向上述基站发送消息, 上述消息携带有以下信息至少之一: 上述终端离开上述主载波的指示信息、 上述待接收的多播广播业务的标识信息; 接收单元, 用于在上述承载多播广 播业务的载波上接收上述基站发送的上述多播广播业务。 优选的, 上述基站包括: 接收单元, 用于接收上述消息; 调度单元, 用 于在确定上述终端从上述承载多播广播业务的载波返回上述主载波之后, 在 上述主载波上为上述终端调度单播业务, 其中, 上述终端在除接收上述多播 广播业务之外的时间上从上述 7 载多播广播业务的载波返回上述主载波。
本发明具有以下有益效果:
1 ) 通过终端发送信息指示终端离开主载波, 基站明确了在主载波上对 终端不进行单播业务调度的时间, 从而实现了单播业务的合理调度, 并节省 了主载波上的资源; 2 ) 通过终端在接收多播广播业务数据以及多播广播业务控制消息的间 隙上从承载多播广播业务的载波返回主载波, 使得基站可以在除接收多播广 播业务数据以及多播广播业务控制消息的时间外对终端在主载波上进行单播 业务调度, 从而使终端实现了单播业务和多播业务的交替接收, 充分利用了 资源, 提高了资源利用率。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 在附图中: 图 1是根据相关技术的多播广播业务连接的示意图; 图 2是根据本发明实施例的多播广播业务的接收系统的示意图; 图 3是根据本发明实施例的多播广播业务的接收方法的示意图; 图 4是根据本发明实施例的多播广播业务的接收方法的优选流程图一; 图 5是根据本发明实施例的多播广播业务的接收方法的优选流程图二; 图 6是根据本发明实施例的多播广播业务的接收方法的优选流程图三; 图 7是根据本发明实施例的多播广播业务的接收方法的优选流程图四; 图 8是根据本发明实施例的多播广播业务的接收方法的优选流程图五。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在 不冲突的情况下, 本申请中的实施例及实施例中的特征可以相互组合。 在以下实施例中, 终端是指具有载波转换能力的终端, 例如, 只具有一
个射频通道的终端。 首先描述本发明实施例所基于的多播广播业务的接收系统。如图 2所述, 该多播广播业务的接收系统包括: 终端 21和基站 22。 上述终端 21包括: 发送单元 211和接收单元 212。 在工作状态下,发送单元 211向基站 22发送消息, 该消息携带有以下信 息至少之一: 终端 21 离开主载波的指示信息、 待接收的多播广播业务的标 识信息。 在终端 21 离开主载波、 转换至承载多播广播业务的载波之后, 接收单 元 212在承载多播广播业务的载波上接收来自基站 22 的多播广播业务数据 或者多播广播业务控制消息。 其中, 多播广播业务控制消息包括以下至少之 一: 多播广播业务配置消息、 多播广播业务映射消息。 这样, 通过终端发送消息指示终端离开主载波, 基站明确了在主载波上 对终端不进行单播业务调度的时间, 从而节省了主载波上的资源。 上述基站 22包括: 接收单元 221和调度单元 222。 在工作状态下, 接收单元 221接收终端发送的上述消息。 调度单元 222 在确定终端返回主载波之后, 在主载波上为终端调度单播业务, 其中, 终端 可以在除接收多播广播业务之外的时间上从承载多播广播业务的载波返回主 载波, 这里, 接收多播广播业务包括以下至少之一: 接收多播广播业务映射 消息、 接收多播广播业务配置消息、 接收多播广播业务数据。 这样, 通过终端在接收多播广播业务数据以及多播广播业务控制消息的 间隙上从承载多播广播业务的载波返回主载波, 使得基站可以在除接收多播 广播业务数据及多播广播业务控制消息的时间外对终端在主载波上进行单播 业务调度, 从而充分利用了资源, 提高了资源利用率。 在本发明实施例中, 图 2所示的多播广播业务的接收系统可以釆用如图 3 中的多播广播业务的接收方法。 如图 3所示, 本发明实施例的多播广播业 务的接收方法包括: 终端向基站发送消息, 所述消息携带有以下信息至少之 一: 终端离开主载波的指示信息、 待接收的多播广播业务的标识信息。 优选 的, 在终端离开主载波、 转换至承载多播广播业务的载波之前, 终端向基站 发送上述信息。
基站 居上述信息对终端进行单播业务调度。 下面通过实施例来详细描 述基站实现上述过程的不同流程。 实施例一 基站和终端通过业务流建立消息( AAI-DSA-RSP消息或 AAI-DSA-REQ 消息), 为终端建立了一个或多个多播广播业务连接。终端在主载波和承载多 播广播业务的载波之间交替转换, 从而交替接收单播业务和多播广播业务。 如图 4中所示, 在终端离开主载波、 转换至承载多播广播业务的载波以 接收多播广播业务配置消息和 /或多播广播业务映射消息和 /或多播广播业务 数据时, 终端发送消息 (例如是 AAI_EMBS-REV-IND消息) 给基站, 指示 基站终端将离开主载波, 接收多播广播业务 (步骤 S41 )。 在本实施例中, AAI EMBS-REV-IND消息携带有动作标识 (例如是一个 Action code ), 该动 作标识的取值为 0表示终端将离开主载波, 取值为 1表示终端返回主载波, 反之亦可。 可选地, 终端在上述 AAI EMBS-REV-IND消息中携带时间信息, 用于 指示终端请求离开主载波的时刻 ( Action time ), 其中, 该时间信息可以包括 以下之一: 超帧偏移、 超帧号、 帧号、 帧偏移、 超帧号与帧号的组合、 超帧 偏移与帧偏移的组合、 超帧或帧比特图。 可选的, 基站收到上述消息后向终端发送反馈消息 (步骤 S42 ), 其中, 反馈消息携带有用于指示允许或拒绝所述终端离开所述主载波的信息。 在允 许终端离开主载波时, 基站在反馈消息中还可以携带有时间信息, 该时间信 息用于指示允许终端离开主载波的时刻。 在本实施例中, 该时间信息可以包 括以下之一: 超帧偏移、 超帧号、 帧号、 帧偏移、 超帧号与帧号的组合、 超 帧偏移与帧偏移的组合、 超帧或帧比特图。 基站通过反馈消息来确定终端是否可以离开主载波、 以及离开主载波的 时间, 使得基站可以灵活地对终端进行控制, 并在考虑整体资源的情况下, 基站可以对终端进行合适的控制, 以便更好的利用系统资源。 具体地, 如果终端在 AAI_EMBS-REV-IND消息中没有携带请求离开的 时刻, 基站在反馈消息中也没有携带时间信息, 则基站在发送反馈消息后将 不为终端在主载波进行其单播业务的调度, 终端在收到反馈消息后的任何时 间均可执行载波转换, 即, 离开主载波, 转换至承载多播广播业务的载波,
以接收多播广播业务数据或多播广播业务控制消息。 具体地, 如果终端在 AAI_EMBS-REV-IND消息中携带了请求离开的时 刻, 基站在反馈消息中没有携带时间信息, 表示基站同意终端请求离开的时 刻。 这样, 终端可以在 AAI EMBS-REV-IND消息中请求的离开时刻离开主 载波、 转换至承载多播广播业务的载波, 以接收多播广播业务数据或多播广 播业务控制消息。 具体地, 如果终端在 AAI_EMBS-REV-IND消息中携带了请求离开的时 刻, 基站在反馈消息中也携带了时间信息, 但该时间信息与终端请求离开的 时刻不同, 则表示基站指示终端在反馈消息中的时刻离开主载波。 具体地, 如果终端在 AAI EMBS-REV-IND消息中没有携带请求离开的 时刻, 基站在反馈消息中携带了时间信息, 表示基站指示终端在反馈消息中 的时刻执行载波转换。 在转换至承载多播广播业务的载波之后, 终端在该载波上接收多播广播 业务配置消息、 多播广播业务映射消息或多播广播业务数据 (步骤 S43 )。 终端在除接收多播广播业务之外的时间上从承载多播广播业务的载波返 回主载波。 可选的, 在终端返回主载波之后, 终端在主载波上向基站发送 AAI EMBS-REV-IND 消息, 其中携带的动作标识指示终端已经返回主载波 (步骤 S44 )。 或者, 终端通过在主载波上向基站发送带宽请求的码字、 或者 发送带宽请求头、 或者发送带宽请求消息, 指示终端已经返回主载波。 或者, 终端发送带宽请求头或者带宽请求消息并携带已经返回主载波的信息。 可选的, 基站收到上述 AAI_EMBS-REV-IND消息后向终端发送反馈消 息进行确认, 并为终端在主载波上进行单播业务调度 (步骤 S45 )„ 上述 AAI_EMBS-REV-IND消息的参数实例如表 1所示。 表 1
上述 AAI EMBS-REV-IND消息的另一参数实例如表 2所示。
表 2
字段 大小 (比特) 取值
Action code 1 0: 离开主载波
1 : 返回主载波
Action time 上述基站发送给终端的反馈消息的参数实例如表 3所示。 表 3
字段 大小 (比特) 取值
Action code 2 ObOO: 确认终端离开
ObOl : 4巨色终端离开 OblO: 确认终端返回 Obl l : 保留 上述基站发送给终端的反馈消息的另一参数实例如表 4所示。 表 4
在具体实施过程中, 所述消息和反馈消息可以分别在现有控制消息中增 加上述参数, 还可以是一个新的控制消息。 通过终端在接收多播广播业务数据和多播广播业务控制消息的间隙上从 承载多播广播业务的载波返回主载波, 使得基站可以在除接收多播广播业务 数据和多播广播业务控制消息的时间外对终端在主载波上进行单播业务调 度, 充分利用了资源, 提高了资源利用率。 实施例二 基站和终端通过业务流建立消息( AAI-DSA-RSP消息或 AAI-DSA-REQ 消息), 为终端建立了一个或多个多播广播业务连接。终端在主载波和承载多 播广播业务的载波之间交替转换, 从而交替接收单播业务和多播广播业务。
如图 5所示, 在终端离开主载波、 转换至承载多播广播业务的载波接收 多播广播业务配置消息和 /或多播广播业务映射消息和 /或多播广播业务数据 时, 终端发送 AAI_EMBS-REV-IND消息 (视为离开指示消息) 给基站, 用 于指示基站终端将离开主载波 (步骤 S51 )。 可选地, 终端在 AAI-EMBS-REV 消息中携带时间信息 (也称为离开时 间信息), 用于指示终端请求离开主载波的时刻 ( Action time )。 此外, AAI-EMBS-REV消息中还可以携带停留时间信息,用于指示终端在承载多播 广播业务的载波上所停留的时间 ( Duration )。 基站根据上述离开时间信息 ( Action time )和停留时间信息( Duration )的取值共同确定终端返回主载波 的时刻。 可选的, 基站收到上述消息后向终端发送反馈消息 (步骤 S52 ), 其中, 反馈消息携带有用于指示允许或拒绝所述终端离开所述主载波的信息。 在允 许终端离开主载波时, 基站在反馈消息中还可以携带有时间信息, 用于指示 允许终端离开主载波的时刻。 通过基站的反馈消息来确定终端是否可以离开 主载波、 以及离开主载波的时间, 使得基站可以灵活地对终端进行控制, 并 在考虑整体资源的情况下, 基站可以对终端进行合适的控制, 以便更好的利 用系统资源。 上述 AAI_EMBS-REV-IND消息的参数实例如表 5所示。 表 5
在转换至承载多播广播业务的载波之后, 终端在承载多播广播业务的载 波上接收多播广播业务数据或多播广播业务控制消息(步骤 S53 ), 并可以在 除接收多播广播业务之外的时间上返回主载波。 由于基站可以根据 Action time和 Duration的取值确定终端返回主载波的时刻, 基站可以在终端返回主 载波之后为终端在主载波上进行单播业务调度(步骤 S54 ), 从而充分利用了 资源。 通过终端在接收多播广播业务数据和多播广播业务控制消息的间隙上从 承载多播广播业务的载波返回主载波, 使得基站可以在除接收多播广播业务
数据和多播广播业务控制消息的时间外对终端在主载波上进行单播业务调 度, 充分利用了资源, 提高了资源利用率。 实施例三 基站和终端通过业务流建立消息( AAI-DSA-RSP消息或 AAI-DSA-REQ 消息), 为终端建立了一个或多个多播广播业务连接。终端在主载波和承载多 播广播业务的载波之间交替转换, 从而交替接收单播业务和多播广播业务。 如图 6所示, 在终端离开主载波、 转换至载多播广播业务的载波时, 终 端发送 AAI_EMBS-REV-IND消息给基站, 指示基站终端将离开主载波 (步 骤 S61 )„ 终端在 AAI_EMBS-REV-IND消息中携带有: 动作标识(例如是一 个 Action code ), 通过动作标识的取值指示终端将离开主载波; 待接收的多 播广播业务的标识信息, 其中, 多播广播业务的标识信息可以包括多播广播 区域标识 (E-MBS Zone ID )、 多播广播业务站标识 ( Multicast Station ID, MSTID ) 和流标识 (Flow ID, FID ) 的组合。 随后, 基站在接收到待接收的 多播广播业务的标识信息之后, 根据多播广播业务的标识信息确定终端转换 到承载多播广播业务的载波接收多播广播配置消息、 多播广播映射消息以及 多播广播业务数据的时刻, 以及终端返回主载波的时刻, 使得基站可以为终 端在主载波上进行单播业务调度。 可选地, 终端在 AAI_EMBS-REV-IND消息中携带时间信息, 用于指示 终端请求离开主载波的时刻。 可选的, 基站收到上述消息后向终端发送反馈消息 (步骤 S62 ), 其中, 反馈消息携带有用于指示允许或拒绝所述终端离开所述主载波的信息。 在允 许终端离开主载波时, 基站在反馈消息中还可以携带有时间信息, 用于指示 允许终端离开主载波的时刻。 通过基站的反馈消息来确定终端是否可以离开 主载波、 以及离开主载波的时间, 使得基站可以灵活地对终端进行控制, 并 在考虑整体资源的情况下, 基站可以对终端进行合适的控制, 以便更好的利 用系统资源。 上述 AAI EMBS-REV-IND消息的参数实例如表 6所示。 表 6
上述 AAI-EMBS-REV-IND消息的另一参数实例如表 7所示。 表 7
在转换至承载多播广播业务的载波之后, 终端在该载波上接收多播广播 业务数据或多播广播业务控制消息(步骤 S63 )。 可选的, 在终端返回主载波 之后, 终端在主载波上向基站发送 AAI_EMBS-REV-IND消息, 其中携带的 动作标识指示终端返回主载波。 基站才艮据 AAI EMBS-REV-IND消息中的多播广播业务的标识信息可以 确定终端除接收多播广播业务之外的空闲时间段, 因此基站在除多播广播业 务配置消息、 多播广播业务映射消息和多播广播业务数据发送时间之外的空 闲时间段上为终端在主载波调度单播业务 (步 4聚 S64 )。 通过终端在接收多播广播业务数据和多播广播业务控制消息的间隙上从 承载多播广播业务的载波返回主载波, 使得基站可以在除接收多播广播业务 数据和多播广播业务控制消息的时间外对终端在主载波上进行单播业务调 度, 充分利用了资源, 提高了资源利用率。
实施例四 基站和终端通过业务流建立消息( AAI-DSA-RSP消息或 AAI-DSA-REQ 消息), 为终端建立了一个或多个多播广播业务连接。终端在主载波和承载多 播广播业务的载波之间交替转换, 从而交替接收单播业务和多播广播业务。 如图 7所示, 在终端离开主载波、 转换至承载多播广播业务的载波时, 终端发送 AAI_EMBS-REV-IND消息 (视为离开指示消息) 给基站, 用于指 示基站终端将离开主载波(步骤 S71 )。 终端在 AAI-EMBS-REV消息中携带 有: 待接收的多播广播业务的标识信息, 其中, 多播广播业务的标识信息可 以包括多播广播区域标识( E-MBS Zone ID ),多播广播业务站标识 ( Multicast Station ID, MSTID )和流标识 (Flow ID, FID ) 的组合。 随后, 基站在接收 到待接收的多播广播业务的标识信息之后, 将其视为终端离开主载波的指示 信息, 并根据多播广播业务的标识信息确定终端返回主载波的时刻, 使得基 站可以为终端在主载波上进行单播业务调度。 可选的, 基站收到上述消息后向终端发送反馈消息(步骤 S72 ), 消息实 例如表 10 所示。 其中, 反馈消息携带有用于指示允许或拒绝所述终端离开 所述主载波的信息。 在允许终端离开主载波时, 基站在反馈消息中还可以携 带有时间信息, 用于指示允许终端离开主载波的时刻。 通过基站的反馈消息 来确定终端是否可以离开主载波、 以及离开主载波的时间, 使得基站可以灵 活地对终端进行控制, 并在考虑整体资源的情况下, 基站可以对终端进行合 适的控制, 以便更好的利用系统资源。 上述 AAI EMBS-REV-IND消息的参数实例如表 8所示。 表 8
在转换至承载多播广播业务的载波之后, 终端在该载波上接收多播广播 业务数据和 /或多播广播业务控制消息 (步骤 S73 )。 由于基站根据 AAI_EMBS-REV-IND消息中的多播广播业务的标识信息 获取到空闲的时间段, 因此基站在除多播广播业务配置消息、 多播广播业务 映射消息和多播广播业务发送时间之外的空闲时间段上为终端在主载波调度 单播业务 (步骤 S74 )。 终端改变所接收的多播广播业务时, 所述终端更新所述待接收的多播广 播业务的标识信息。 然后, 终端将再次发送 AAI_EMBS-REV-IND消息给基 站, 其中, AAI_EMBS-REV-IND 消息携带更新的多播广播业务的标识信息 (步骤 S75 )„基站根据更新的多播广播业务的标识信息为终端在主载波调度 单播业务。 特别地, 当表格 8中的 N取值为零时, 表示终端停止多播广播业 务接收。 终端也可以在 AAI_EMBS-REV-IND消息中携带专用的指示信息, 用 于指 示终端开始 、 更改和停止多 播广播业务接收, 此时 AAI EMBS-REV-IND消息的参数实例如表 9所示。 表 9
表 10
参数 取值 用途
Action code ObO: 确认终端执行载波
转换
Obi : 拒绝终端执行载波
转换
Action Time
Action code 耳又值为 ObO 时可能包含该值 实施例五 基站和终端通过业务流建立消息( AAI-DSA-RSP消息或 AAI-DSA-REQ 消息), 为终端建立了一个或多个多播广播业务连接。终端在主载波和承载多 播广播业务的载波之间交替转换, 从而交替接收单播业务和多播广播业务。 如图 8所示, 在终端离开主载波、 转换至承载多播广播业务的载波时, 终端发送 AAI_EMBS-REV-IND消息 (视为离开指示消息) 给基站, 用于指 示基站终端将离开主载波(步骤 S81 )。 终端在 AAI_EMBS-REV-IND消息中 携带有待接收的多播广播业务的标识信息, 其中, 多播广播业务的标识信息 包括多播广播业务区域标识 (E-MBS Zone ID ) 和多播广播业务连接比特图 (E-MBS Connection Bitmap)„ 多播广播业务比特图从低位到高位(或者从高位到低位),每一比特对应 于一个待接收的多播广播业务连接。 待接收连接按照 MSTID+FID的取值大 小顺序与比特图的每一位对应, 例如 MSTID+FID最小值对应于 bitmap的最 氐位, MSTID+FID最大值对应于 bitmap的最高位。 每一比特取值为一, 表 示终端即将或正在接收该多播广播业务连接, 取值为零表示不接收或者终端 尚未建立该多播广播业务区域的连接, 反之亦可。 如果终端和基站删除已建立的一个或多个多播广播业务连接, 或者建立 新的多播广播业务连接, 则终端和基站更新上述比特图与多播广播业务连接 的对应关系。
可选的, 基站收到上述消息后向终端发送反馈消息 (步骤 S82 ), 其中, 反馈消息携带有用于指示允许或拒绝所述终端离开所述主载波的时间信息。 在本实施例中, 上述时间信息是一个超帧或帧比特图, 该比特图中的每一比 特对应于该多播广播业务的一个 MSI内的一个或多个帧或超帧,取值为 1表 示不允许终端在该帧或超帧内离开主载波, 取值为 0表示允许终端在该帧或 超帧内离开主载波 (转换到其他载波接收多播广播业务), 反之亦可。 因此, 可以通过基站的反馈消息中所携带的时间信息比特图来确定终端是否可以离 开主载波(取值为 0还是 1 )、 以及离开主载波的时间 (每个比特所对应的帧 或超帧),使得基站在考虑整体资源的情况下灵活地对终端进行控制, 以便更 好的利用系统资源。 所述反馈消息的一个实例如表 12所示。 在转换至承载多播广播业务的载波之后, 终端在该载波上接收多播广播 业务数据和 /或多播广播业务控制消息 (步骤 S83 )。 基站在接收到待接收的多播广播业务的标识信息之后, 根据多播广播业 务的标识信息可以确定终端转换到承载多播广播业务的载波接收多播广播配 置消息、 多播广播映射消息以及多播广播业务数据的时刻, 以及终端返回主 载波的时刻,使得基站可以为终端在主载波上进行单播业务调度(步骤 S84 )。 如果终端更换了待接收的多播广播业务连接, 则终端向基站发送更新的 多播广播业务连接比特图 (步骤 S85 )。 可选地, 终端在 AAI_EMBS-REV-IND消息中携带时间信息, 用于指示 终端请求离开主载波的时刻。 上述 AAI_EMBS-REV-IND消息的参数实例如表 11所示。 表 11
字段 大小 取值
(比特)
Action Code 2
ObOO: 开始接) 多 播广播业务
ObOl: 更改接收的 多播广播业务
OblO : 停止接 ) 多 播广播业务
E-MBS Zone ID
E-MBS Connection Bitmap 16
对于 bitmap中的每 个 bit:
0: 终端不接收或者 终端尚未建立该多 播广播业务区域的 连接
1: 终端即 ^!夺或正在 接收该多播广播业 务连接
} 表 12
通过上述多播广播业务的不连续分布的特性, 使得终端在除接收多播广 播业务之外的空闲时间段上可以返回主载波, 以便基站可以对该终端实现单 播业务, 从而充分利用了资源。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 并 且在某些情况下, 可以以不同于此处的顺序执行所示出或描述的步骤, 或者
将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制作 成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软件 结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。
Claims
1. 一种多播广播业务的接收方法, 其特征在于, 包括: 终端向基站发送消 息, 所述消息携带有以下信息至少之一: 所述终端离开主载波的指示信 息、 待接收的多播广播业务的标识信息。
2. 根据权利要求 1所述的多播广播业务的接收方法, 其特征在于, 在终端 向基站发送消息之后, 所述方法还包括:
所述基站接收所述消息;
所述基站向所述终端发送反馈消息, 其中, 所述反馈消息携带有用 于指示允许或拒绝所述终端离开所述主载波的信息。
3. 根据权利要求 1所述的多播广播业务的接收方法, 其特征在于, 所述消 息中携带有时间信息, 用于指示终端请求离开主载波的时刻。
4. 根据权利要求 2所述的多播广播业务的接收方法, 其特征在于, 在所述 反馈消息携带用于指示允许所述终端离开所述主载波的信息时, 所述反 馈消息还携带有时间信息, 其中, 所述时间信息用于指示所述基站允许 所述终端离开所述主载波的时刻, 在所述基站向所述终端发送反馈消息 之后, 所述方法还包括:
所述终端在所述时刻离开所述主载波, 转换至所述承载多播广播业 务的载波。
5. 根据权利要求 3或 4所述的多播广播业务的接收方法, 其特征在于, 所 述时间信息包括以下之一: 超帧偏移、 超帧号、 帧号、 帧偏移、 超帧号 与帧号的组合、 超帧偏移与帧偏移的组合、 超帧或帧比特图。
6. 根据权利要求 1所述的多播广播业务的接收方法, 其特征在于, 在终端 向基站发送消息之后, 所述方法还包括:
所述基站才艮据所述待接收的多播广播业务的标识信息确定所述终端 离开主载波的时刻, 其中, 所述待接收的多播广播业务的标识信息用于 通知所述基站所述终端待接收的多播广播业务连接, 所述待接收的多播 广播业务的标识信息包括以下至少之一: 多播广播业务站标识和流标识 的组合、 多播广播业务区域标识、 多播广播业务连接比特图。
7. 根据权利要求 6所述的多播广播业务的接收方法, 其特征在于, 在终端 向基站发送消息之后, 所述方法还包括:
在所述终端待接收的多播广播业务连接改变时, 所述终端更新所述 待接收的多播广播业务的标识信息;
所述终端将更新后的多播广播业务的标识信息发送给所述基站。
8. 根据权利要求 1所述的多播广播业务的接收方法, 其特征在于, 在终端 向基站发送消息之后, 所述方法还包括:
所述终端在所述承载多播广播业务的载波上接收基站发送的多播广 播业务;
所述终端在除接收多播广播业务之外的时间上返回所述主载波; 在所述基站确定终端返回所述主载波之后, 所述基站在所述主载波 上为所述终端调度单播业务。
9. 根据权利要求 8所述的多播广播业务的接收方法, 其特征在于, 所述基 站确定终端返回所述主载波包括以下之一:
所述终端在返回所述主载波之后向所述基站发送返回信息, 其中, 所述返回信息用于指示所述终端返回所述主载波; 所述消息中携带有离开时间信息和停留时间信息, 所述基站根据所 述离开时间信息和所述停留时间信息来确定终端是否返回所述主载波, 其中, 所述离开时间信息用于指示终端离开主载波的时刻, 所述停留时 间信息用于指示所述终端在所述承载多播广播业务的载波上的停留时 间;
所述基站 居所述终端发送的所述待接收的多播广播业务的标识信 息确定所述终端返回所述主载波的时刻。
10. 根据权利要求 8所述的多播广播业务的接收方法, 其特征在于, 所述终 端在所述承载多播广播业务的载波上接收基站发送的所述多播广播业务 包括以下至少之一:
接收多播广播业务配置消息;
接收多播广播业务映射消息;
接收多播广播业务数据。
11. 一种多播广播业务的接收系统, 包括终端和基站, 其特征在于, 所述终 端包括:
发送单元, 用于向所述基站发送消息, 所述消息携带有以下信息至 少之一: 所述终端离开所述主载波的指示信息、 所述待接收的多播广播 业务的标识信息;
接收单元, 用于在所述承载多播广播业务的载波上接收所述基站发 送的所述多播广播业务。
12. 根据权利要求 11所述的多播广播业务的接收系统, 其特征在于, 所述基 站包括:
接收单元, 用于接收所述消息;
调度单元, 用于在确定所述终端从所述^载多播广播业务的载波返 回所述主载波之后, 在所述主载波上为所述终端调度单播业务, 其中, 所述终端在除接收所述多播广播业务之外的时间上从所述承载多播广播 业务的载波返回所述主载波。
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CN101374252A (zh) * | 2007-08-21 | 2009-02-25 | 中国移动通信集团公司 | 基于mbms专用载波系统的终端反馈方法、计数方法及装置 |
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WO2022087069A1 (en) * | 2020-10-21 | 2022-04-28 | Google Llc | Managing transmission and reception of multicast and broadcast services |
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