WO2008046347A1 - Procédé de commutation en mode de radiodiffusion de service mbms, procédé de transfert de terminal, station de base et réseau - Google Patents

Procédé de commutation en mode de radiodiffusion de service mbms, procédé de transfert de terminal, station de base et réseau Download PDF

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Publication number
WO2008046347A1
WO2008046347A1 PCT/CN2007/070872 CN2007070872W WO2008046347A1 WO 2008046347 A1 WO2008046347 A1 WO 2008046347A1 CN 2007070872 W CN2007070872 W CN 2007070872W WO 2008046347 A1 WO2008046347 A1 WO 2008046347A1
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WIPO (PCT)
Prior art keywords
mode
point
base station
terminal
broadcast
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PCT/CN2007/070872
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English (en)
Chinese (zh)
Inventor
Wenliang Liang
Jianjun Wu
Wei Zhang
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Huawei Technologies Co., Ltd.
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Publication of WO2008046347A1 publication Critical patent/WO2008046347A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0007—Control or signalling for completing the hand-off for multicast or broadcast services, e.g. MBMS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • 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

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a broadcast mode conversion method, a terminal handover method, a base station, and a network for a multicast broadcast service.
  • WiMAX Worldwide Interoperability for Microwave Access
  • MSS/SS Mobile Subscriber Station I Subscriber Station
  • ASN Access Service Network
  • ASN Access Service Network
  • a logical entity such as a Connection Service Network (CSN).
  • the ASN is defined as a set of network functions for providing wireless access services to WiMAX terminals.
  • the ASN includes a Base Station ("BS") and an Access Service Network Gateway (ASN-GW) network element.
  • the role of the ASN mainly includes the following aspects: Ensure the WiMAX terminal and the WiMAX base station. Establishment of Layer 2 connection; Radio resource management; Network discovery and optimal selection of WiMAX subscriber network service providers; Acting as a proxy server to control authentication, authorization and charging messages of WiMAX terminals in proxy mobile IP mode; The establishment of the layer application connection provides a relay.
  • the main functions of the BS network element are: providing L2 connection between the BS and the MS, radio resource management, etc.; the main functions of the ASN-GW network element are: MS authentication, authorization, and accounting.
  • the function provides client functions, provides the relay function of L3 information (such as IP address allocation), and intra-ASN switching for the MS.
  • CSN is defined to provide IP connectivity services for WiMAX terminals, including prepaid servers (Pre-Pay).
  • CSN Authentication, Authorization and Accounting Server
  • PPS Packet Control System
  • AAA Server Authentication, Authorization and Accounting Server
  • the role of CSN mainly includes the following aspects: assigning an IP address to a WiMAX terminal session; providing Internet access; acting as an authentication and authorization charging proxy server or an authentication and authorization accounting server; performing policy and access control based on user subscription data; Establish the tunnel between ASN and CSN; support the generation of WiMAX subscriber bills and WiMAX service settlement between operators; Support the establishment of roaming tunnels between CSNs; Support mobility between ASNs; Support multiple WiMAX services For example, location-based services, end-to-end services, multimedia broadcast and multicast services, and more.
  • the Point to Point (“PTP”) network provides personalized content one-to-one for the terminal, and the multicast network provides a unified set of subscription content for many terminals. ⁇ Personalization at the expense of maximum bandwidth usage (lowest resource utilization), because content distribution needs to be done independently for each terminal; multicast technology replaces maximum resource utilization by sacrificing personalization.
  • PGP Point to Point
  • MBS Multicast and Broadcast Service
  • the usual communication is communication between one node and another, but as the user's needs increase, and the introduction of multiple media, new transmission modes are required, that is, one-to-many points may include more than one point. Point communication.
  • it is also desirable to meet the resource utilization effectiveness of communication that is, the multiplexing of some key communication resources, such as the bandwidth of the air interface, the connection identifier ("CID"), and the transmission tunnel of the access network. , defines the MBS multicast broadcast service.
  • the MBS transmission mode can be divided into single BS access and multiple BS access, and the concept of the MBS domain is defined under multi-BS access.
  • the so-called MBS domain is a collection of base stations.
  • the base station in this set must satisfy one condition: the multicast connection identifier CID used when transmitting MBS data and the Security Alliance ("SA") must be consistent.
  • SA Security Alliance
  • the broadcast mode of the MBS service can be either Point to Point (“PTP") or Point to Multi Point (“PMP").
  • PTP Point to Point
  • PMP Point to Multi Point
  • each MSS/SS uses one CID
  • the ASN separately transmits MBS services for each MSS/SS; in the PMP broadcast mode, all MSS/SSs share a multicast CID ("MCID")
  • MCID multicast CID
  • the ASN carries the MBS service to the MCID at the maximum power only at the air interface, and all MSS/SSs receive according to the MCID.
  • the inventor has found that for PTP broadcast, since each terminal needs to occupy one CID connection and its supporting processing resources and network resources, it tends to be inefficient in the case of multicast broadcasting.
  • the BS is usually in the air interface. Transmission with maximum transmit power and the most robust code modulation method undoubtedly brings a large loss to the air interface efficiency. In the case where there are a large number of terminals, it is appropriate to take a multicast or broadcast method, but if the number of terminals is low, it will be worth the loss. Summary of the invention
  • the embodiments of the present invention provide a broadcast mode conversion method, a terminal handover method, a base station, and a network for a multicast broadcast service, so that the MBS service is implemented more efficiently.
  • an embodiment of the present invention provides a method for converting a broadcast mode of a multicast broadcast service, including: triggering a transition from a current broadcast mode to a target broadcast mode;
  • the base station allocates network resources for the target broadcast mode, releases the network resources of the current broadcast mode, and broadcasts the multicast broadcast service according to the target broadcast mode.
  • the method for converting the broadcast mode of the multicast broadcast service provided by the embodiment of the present invention can implement continuous conversion between the PTP and the PMP, and ensure the continuity and reliability of the MBS service, so that the MBS service can be implemented more efficiently.
  • the embodiment of the invention further provides a terminal switching method, which includes:
  • the target base station obtains information of the multicast broadcast service broadcast mode that the terminal performing the handover is using by interacting with the original serving base station;
  • the terminal is notified to receive the multicast broadcast service according to the broadcast mode of the target base station after the handover.
  • the present invention is directed to the switching of the broadcast mode in the terminal handover process, and can realize the broadcast mode conversion in the seamless handover of the MBS service, thereby ensuring the continuity and reliability of the MBS service.
  • the embodiment of the invention further provides a base station, including:
  • a determining module configured to determine whether the situation in which the base station receives the multicast broadcast service meets a transition condition that triggers the multicast broadcast service from the current broadcast mode to the target broadcast mode;
  • a conversion module configured to: when the determining module determines that the transition condition is met, allocate network resources for the target broadcast mode, release network resources of the current broadcast mode, and press the target broadcast mode The multicast broadcast service is broadcasted, and the transition of the multicast broadcast service from the current broadcast mode to the target broadcast mode is completed.
  • the embodiment of the present invention further provides a network, including a target base station, an original serving base station, and at least one terminal, where the target base station includes:
  • the terminal When the broadcast mode of the multicast broadcast service is different from the broadcast mode of the multicast broadcast service in the original serving base station, the terminal is notified to receive the multicast broadcast service according to the broadcast mode of the target base station after the handover. Module.
  • the embodiment of the present invention provides a solution for converting between the PTP and the PMP modes in the MBS service broadcast process, so that the number of the receiving terminals of the MBS service is different, so that the network can flexibly select the transmission mode to achieve optimal resource utilization.
  • the purpose is to save network link resources not only in the multi-terminal case but also in the PTP mode when the number of terminals is small, so as to save transmission power and air interface bandwidth.
  • 1 is a schematic diagram of functional entities of an existing WiMAX network and its networking principles
  • FIG. 2 is a PMP to PTP conversion flowchart according to a second embodiment of the present invention
  • FIG. 3 is a PTP to PMP conversion flowchart according to a third embodiment of the present invention
  • FIG. 4 is a fourth embodiment of the present invention. There is a flow chart for preparing the BS switch
  • Fig. 5 is a flow chart showing the unprepared BS switching according to the fifth embodiment of the present invention.
  • WiMAX networks support MBS multicast broadcast service broadcast.
  • the present invention further proposes a conversion solution for the MBS service broadcast mode, so as to flexibly select the PMP multicast or PTP unicast mode for MBS broadcast, so that the MBS transmission can more fully utilize the wireless resources.
  • the present invention determines whether to activate PMP to PTP or according to the number of terminals by setting two threshold values.
  • PTP to PMP conversion process The conversion process is implemented entirely through the message and interaction mechanisms defined by the existing standards during the conversion process.
  • a method of MBS broadcast mode conversion at the time of BS handover is provided to support the continuity of the MBS service.
  • a first embodiment of the present invention relates to a method for converting a broadcast mode of an MBS service.
  • two transition thresholds N1 and N2 are set, which are respectively referred to as a lower limit of conversion and an upper limit of conversion, where N1 is a threshold for triggering PMP to PTP.
  • N2 is the opposite.
  • N1 is a threshold for triggering PMP to PTP.
  • N2 is the opposite.
  • the system includes several basic steps: the BS allocates a network resource, such as a CID, for the target broadcast mode, releases the network resource of the current broadcast mode, and broadcasts the MBS service according to the target broadcast mode. Then, the BS notifies the terminal that the service is changed. Broadcast mode related information (such as CID, SFID (Service Flow ID), etc.), receiving time related parameters, and receiving services according to the target broadcast mode.
  • a network resource such as a CID
  • SFID Service Flow ID
  • PTP can use MBS data encryption key (MBS Traffic Key, referred to as "MTK”) in PMP mode, or use TTP (Traffic Encryption Key) like PTP; PMP can only use P Use MTK.
  • MTK MBS data encryption key
  • TTP Traffic Encryption Key
  • the MTK is derived from the MBS Authentication Key (“MAK”) and the MBS Group Traffic Encryption Key (“MGTEK”) according to the description of 802.16e.
  • CID In the PTP mode, each terminal uses different transport CIDs to deliver service data. In PMP mode, all terminals share a CID. This CID can be the Transport CID or MCID in 802.16e.
  • MBS domain Under multi-BS access, if PTP mode is entered from PMP mode, there is no longer the concept of MBS domain; however, BS still provides all MBS services provided in the original MBS domain, but no longer uses a single CID. Send data with the security association.
  • Idle state In PTP mode, the terminal cannot be in the Idle state. This is because each terminal uses different Transport CIDs to receive MBS service data. 5) The DL-MAP (downlink-MAP, downlink resource mapping table) message is used to describe the physical resource of the data to be sent.
  • DL-MAP downlink-MAP, downlink resource mapping table
  • Multi-house multi-host
  • the BS can notify the terminal to receive time-related parameters in the following three ways:
  • the terminal may directly index the MBS stream by using the indication message, or may first index the indication message through the second indication message, and then index the MBS stream by using the indication message.
  • the respective implementation modes and conversion trigger conditions of the two modes are given.
  • the transmit power (maximum transmit power) and other resource occupancy in the point-to-multipoint mode are independent of the current number of terminals.
  • the conversion can be triggered when the total amount of resources required is broadcast, and vice versa.
  • a second embodiment of the present invention relates to a method for converting a broadcast mode of an MBS service.
  • the present embodiment specifically implements a flow of PMP to PTP based on the first embodiment.
  • the interaction steps of each functional entity in the process are shown in Figure 2.
  • step 1 of the figure to establish a PTP link for all terminals, it must be ensured that each terminal is in a normal state, so the BS needs to send a command to activate the terminal in the Idle state.
  • the MOB-PAG-ADV (Paging Broadcast) message can be used to activate all terminals in the Idle state that use this MBS service.
  • the MOB-PAG-AD V message can be sent on the multicast CID in PMP mode, and all terminals listening to this multicast CID can receive this page.
  • the MOB-PAG-ADV can also carry an MBS Service ID and then send it on the broadcast channel. All terminals that receive this MBS service respond to this page.
  • the Aciton parameter in the MOB-PAG-AD V can be set to allow the terminal to exit the idle mode. After the terminal re-accesses the network, follow the behavior of the BS and the active state of the terminal as described in the following steps.
  • the BS needs to separately allocate the CID of the PTP to each terminal, and then map the MBS service flow to be broadcasted on all PTP CIDs respectively, that is, one copy of each CID.
  • BS This series of CIDs needs to be reassigned. These CID sets are mapped together with the service flows originally using the multicast CID, and these CIDs are assigned to the respective MSs. This operation is only managed by the BS, and does not involve the ASN-GW (access service). Network gateway), does not consider the one-to-one correspondence between CID and SFID.
  • the BS initiates a DSC/DSA (Dynamic Service Change/Addition) process for each MS involved, and the message carries the new one assigned to the terminal.
  • SFID and newly assigned PTP CID In order for the terminal to map the newly assigned CID and SFID to the original multicast CID and SFID, it is necessary to carry the mode switching indication and the multicast broadcast service ID in the DSA/C-REQ (or It is the original CID/SFID); For the network side, it is equivalent to the establishment process of the BS to initiate a new service flow.
  • the SFID is considered to be the Anchor Service Flow Authorization Server (SFA) in the ASN.
  • SFA Anchor Service Flow Authorization Server
  • RR Resource Reserve
  • a bit can be used to indicate that the Anchor SFA allocates a new SFID to the BS without using a new R6 connection.
  • the RR-Request (Resource Reservation Request) message sent by the BS to the GW also carries the corresponding MCID and SFID.
  • the BS sends a command to notify each MBS service terminal to change from the original MCID to the PTP CID.
  • the step of receiving the MBS flow by the MBS service terminal can be implemented by using a dynamic service management message, such as the BS.
  • the MS initiates a DSC process, modifying the original MCID to be the PTP CID re-allocated in the previous step, or initiating the DSA process assignment to the reassigned PTP CID.
  • DSD Dynamic service deletion
  • the DSC/DSA message carries the SFID corresponding to the original multicast CID and the newly allocated PTP CID. After receiving the message, the terminal implicitly informs the terminal of the mode conversion information.
  • the BS when the BS completes the MBS service data after the conversion process is completed, it can be encrypted by the same MTK, and then mapped by the classifier to multiple CIDs, and then, the data sent and the PTM are sent. The same under the mode.
  • the BS can directly encrypt the service flow on each PTP CID by using the security association information in the original PMP mode without updating the security association information, that is, all service backups use the same security association.
  • the MS and BS can still maintain all security-related parameters in PMP mode, such as MAK, MGTEK; or wait for the updated parameters when the mode needs to be switched again.
  • the MS and BS still need to maintain all parameters in PMP mode, such as multicast CID, so that the PTP back to PMP conversion goes smoothly.
  • a third embodiment of the present invention relates to a method for converting a broadcast mode of an MBS service.
  • the present embodiment specifically implements a flow of PTP to PMP based on the second embodiment.
  • the interaction steps of each functional entity in the process are shown in Figure 3.
  • the BS sends a command to notify each terminal to switch from PTP mode to PMP mode, and the terminal needs to receive the MBS service flow from the original MCID.
  • the BS initiates a DSC or DSD process to the MS, and modifies the PTP CID to the PMP CID that the service should have, that is, the originally reserved MCID.
  • the message if the DSC message is used, the message carries the SFID corresponding to the original MCID and the MCID in the PMP mode, so that the terminal detects the service flow on the multicast channel, and after the terminal confirms to update the CID, The BS can release the originally allocated PTP resources. If the DSD message is used, the message carries the SFID corresponding to the original MCID and the unicast CID allocated for the PTP mode, and then sends a DSA message to redistribute the previously reserved MCID to the SFID. After receiving the DSD confirmation from the terminal, the network side releases the network resources in the PTP mode, and the terminal deletes the respective unicast CIDs and releases the resources.
  • the BS maps the MBS service flow to the MCID for unified transmission, and all terminals have completed the CID conversion. At the same time, the BS also needs to release the unicast CID corresponding to each terminal and its network resources.
  • the BS also needs other information about the PMP (such as MAK, MGTEK), it needs to request from the network side to obtain this information through interaction with the network side.
  • other information about the PMP such as MAK, MGTEK
  • the conversion process is completed and the future data is carried by the unified MCID. If the security association used in the previous PTP mode is separately established for each terminal, the security association of the PTP on the terminal and the BS can also be deleted when the PTP is switched to the PMP mode.
  • a unified handover procedure needs to be defined.
  • the handover is divided into two types: preparation and no preparation. The difference is whether the MS requests to decide to switch after losing contact with the service BS.
  • the switching between the BSs is essentially a conversion mode of the broadcast mode. If the serving BS and the target BS each deliver the MBS service, when the BSs of the two modes are different, the corresponding CID and other broadcast mode related information. It is also different and needs to be updated. This is basically the same as the broadcast mode conversion process described above. The difference is that it is the transition from the current broadcast mode to the target broadcast mode, and here is the broadcast mode from the serving BS to the target BS.
  • the REG-REQ/RSP Registration Request/Response
  • the REG-REQ/RSP Registration Request/Response
  • the present invention determines whether to perform a broadcast mode conversion according to the number of terminals of the current multicast group by setting a threshold of two directions, that is, a PTP-to-PMP or a PMP-to-PTP broadcast mode conversion.
  • a threshold of two directions that is, a PTP-to-PMP or a PMP-to-PTP broadcast mode conversion.
  • the actual situation chooses different broadcast methods.
  • the continuous conversion between PTP and PMP is realized through the steps of CID transformation, DSA/DSC message notification, release of original CID and mapping transmission of new CID, ensuring continuity and reliability of MBS service. Sex.
  • a fourth embodiment of the present invention relates to a terminal handover method, and takes a DSX message as an example.
  • the complete switching process with ready to switch is provided, as shown in Figure 4.
  • step 1 of the figure the terminal, the current serving BS, and the target BS switch by interaction.
  • the MS, the service BS and all potential target BSs interact with each other in the manner described by the existing standards, and draw a conclusion as to whether a handover is required; there are three decision points: MS, Service ASN, Anchor DPF (Anchor Data Path Function) The ASN where it is located; if not, the MS continues to receive the MBS service at the serving ASN; otherwise, the handover process is performed. If it is an MS decision, there is a MOB-MSHO-REQ (Handover Request as defined in 802.16e) message.
  • MOB-MSHO-REQ Hopover Request as defined in 802.16e
  • the target BS obtains the MBS service related information by interacting with the service BS.
  • Service ASN the ASN where the target BS is located (the target ASN), and the ASN-GW where the Anchor DPF is located interacts with the standard defined handover signaling, so that the target ASN obtains the MBS service ID (or content) received by the MS under the current serving BS. ID ), and the CID or MCID carried by the service.
  • the target ASN confirms whether the target BS also carries the MBS service by using the MBS service ID (or the content ID).
  • the ASN-GW may maintain the MBS service information of all the BSs under it, or may be the MBS proxy (MBS Proxy). maintain.
  • MBS Proxy MBS proxy
  • the target ASN may send the target BS to the CID or MCID of the MBS service, the broadcast mode, such as the PTP or the PMP mode, the information of the security association, etc., to notify the service BS. .
  • the obtained result (such as whether the target BS carries the MBS service) is notified to the MS by the serving BS in the MAC message MOB-BSHO-RSP; if the target BS broadcasts the MBS, the broadcast related information is also placed in the MOB-
  • the BSHO-RSP includes information of a CID or MCID, and/or a PTP/PMP mode, and/or a security association in which the target BS transmits the MBS service.
  • the MS knows the broadcast information of the target BS before the handover. Of course, if the target BS does not broadcast the service, the handover is aborted to find other potential target BSs.
  • the target BS needs to confirm that the MBS service has been delivered from the MBS server. If it is not delivered, the session channel is established according to the related information. If the target BS carries the MBS service, but the MBS service is not delivered to the target BS, that is, the service data channel of the MBS server to the target BS has not been established, that is, the MS is the first terminal under the target BS to receive the MBS service.
  • the target ASN will trigger a session start process to establish these channels, as shown in step 3 in the figure.
  • the switching terminal establishes an MBS service connection with the target BS through a network re-entry procedure.
  • the handover terminal receives the MBS service flow broadcast by the target BS according to the information about the MBS service broadcasted by the target BS, such as CID or MCID, the broadcast mode, the security association, etc., and the information needs to be forwarded by the target BS before the handover.
  • the service BS is sent to the MS for further delivery; or sent by the serving BS to the MS.
  • the parameter information of the multicast broadcast service flow under the MS target BS may also be notified through the REG-REQ/RSP message interaction.
  • the target BS needs to communicate with the handover terminal to deliver the information, and the handover terminal can receive the service flow.
  • the DSX process (which can be a DSC process or a DSD + DSA process) can only be initiated by the BS, and the CID or MCID of the MBS service received on the MS is replaced with the CID or MCID of the current target BS to send the MBS service.
  • the BS also initiates a key request process to re-establish the security association for encrypted transmission.
  • the BS may not initiate the DSX process, but the MS directly replaces the corresponding CID or MCID with the CID or MCID used by the target BS. This process can be done before the network is re-entered because it does not need to interact with the target BS. If the MS obtains the security association that the target BS sends the MBS service, the BS may not initiate the key request process, but the MS directly replaces the corresponding security association with the security association used by the target BS. This process can be done before the network re-enters because it does not need to interact with the target BS. However, there is a need to ensure that the life cycle of the security alliance is still valid. Whether the MS or BS initiates the DSX process, it is sufficient to perform a CID or MCID update.
  • a fifth embodiment of the present invention relates to a terminal handover method, and the present embodiment is a flow without preparation for handover. Cheng, as shown in Figure 5.
  • step 1 of the figure after the MS loses the connection with the current serving BS, the ranging request information RNG-REQ (Ranging request) is sent, and the target BS receives the information and enters the handover procedure.
  • RNG-REQ Ranging request
  • the target BS learns the information of the serving BS through the interaction with the MS, that is, can contact the service BS through the network side, and interact with the original MBS service related information, that is, the CID or MCID, the broadcast mode, Security Alliance and other information.
  • the original MBS service related information that is, the CID or MCID, the broadcast mode, Security Alliance and other information.
  • the target BS confirms whether the MBS broadcast service has been delivered from the server, and if not, the service is established from the server according to the MBS service related information.
  • step 4 of the figure the switching terminal establishes a service connection with the target BS through the network re-entry process.
  • the target BS transmits the related information of the MBS service, that is, the CID or the MCID, the broadcast mode, the security association, etc., by the target BS to interact with the handover terminal, so that the MS establishes a connection with the new BS, and receives the service. flow.
  • the trigger point of the switch is different. This is independent of the MBS service.
  • the unprepared situation is passive triggering.
  • the MS has no chance to know the MBS related information on the target BS, so the relevant steps are the same as those in the case where the MS is unable to know the information about the MBS service broadcast by the target BS in the preparation handover process.
  • the present invention can also use the MCID in a specific PMP mode to send a management message, so that all information required by the MS, such as PMP to PTP mode conversion start, and allocation to all, can be notified in this manner.
  • the other steps are the same as described.
  • a sixth embodiment of the present invention relates to a base station, comprising: a determining module, configured to determine, in a current broadcast mode, whether a situation in which the base station receives an MBS service satisfies triggering the MBS service a conversion condition from the current broadcast mode to the target broadcast mode; and a conversion module, configured to: when the determining module determines that the transition condition is met, allocate network resources for the target broadcast mode, release network resources of the current broadcast mode, and broadcast the network according to the target broadcast mode.
  • the MBS service completes the conversion of the MBS service from the current broadcast mode to the target broadcast mode; and the notification module is configured to notify the terminal receiving the MBS service to receive the MBS service according to the target broadcast mode.
  • the broadcast mode includes PMP mode and PTP mode.
  • the judging module judges whether the number of terminals receiving the MBS service under the base station is less than a preset lower limit of conversion, and if so, determines that the transition condition for triggering the MBS service from the PMP mode to the PTP mode is satisfied.
  • the determining module determines whether the number of terminals receiving the MBS service under the base station is greater than a preset upper limit of the conversion, and if so, determining that the transition condition for triggering the MBS service from the PTP mode to the PMP mode is satisfied.
  • the conversion module completes the conversion of the MBS service from the PMP mode to the PTP mode by:
  • Each terminal that uses this MBS service is separately assigned a CTP of the PTP, and the MBS service flow is mapped on the CID of the PTP.
  • the MBS is encrypted and broadcasted according to the security association information of the original PMP mode to each terminal, or the MBS is encrypted and broadcasted to the terminal according to the newly created security association information corresponding to each terminal.
  • the conversion module completes the conversion of the MBS service from the PTP mode to the PMP mode by:
  • a seventh embodiment of the present invention relates to a network including a target base station, an original serving base station, and at least one terminal.
  • the target base station includes:
  • the terminal When the broadcast mode of the multicast broadcast service is different from the broadcast mode of the multicast broadcast service in the original serving base station, the terminal is notified to receive the multicast broadcast service according to the broadcast mode of the target base station after the handover. Module.
  • the module that notifies the terminal to receive the multicast broadcast service according to the broadcast mode of the target base station after the handover may notify the terminal to receive the broadcast mode according to the target base station after the handover by the original serving base station before the handover of the terminal
  • the multicast broadcast service may also directly notify the terminal to receive the multicast broadcast service according to the broadcast mode of the target base station after the terminal is switched.
  • the target base station obtains the information of the MBS service broadcast mode that the terminal performing the handover is using by interacting with the original serving base station, and if the broadcast mode of the MBS in the target base station is different from the broadcast mode of the MBS in the original serving base station,
  • the terminal that has been notified by the original serving base station before the handover can receive the MBS service according to the broadcast mode of the target base station after the handover, or the target base station directly sends the information about the change broadcast mode to the terminal after the handover.
  • Information about changing the broadcast mode can be notified to the terminal through DSC/DSA/DSD signaling, or registration procedures.
  • the implementation manner of the present invention can implement the conversion process between the PTP and the PMP based on the message format and the interaction mechanism specified by the existing IEEE 802.16 protocol, realize the flexible transmission of the MBS service, and improve the practical feasibility and compatibility of the solution. Reduce the cost of upgrading existing equipment.
  • the implementation of the MBS broadcast mode conversion in the terminal handover process the continuity and reliability of the MBS service are ensured, and the service quality is improved.

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  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de commutation en mode de radiodiffusion de service MBMS, un procédé de transfert de terminal, une station de base et un réseau qui permettent la mise en oeuvre d'un service MBMS de grande efficacité. Selon le procédé de commutation en mode de radiodiffusion de service MBMS de l'invention, on déclenche la commutation d'un mode de radiodiffusion en cours dans un mode de radiodiffusion cible; au cours de la commutation, la station de base attribue la ressource réseau au mode de radiodiffusion cible; la ressource réseau est libérée du mode de radiodiffusion en cours; et le service MBMS est radiodiffusé en fonction du mode de radiodiffusion cible. L'invention permet de garantir la continuité et la fiabilité du service MBMS au cours du processus de commutation entre différents modes de radiodiffusion. L'invention se rapporte à deux procédés de transfert immédiat et de transfert non immédiat par commutation en mode de radiodiffusion au cours du transfert depuis la station de base.
PCT/CN2007/070872 2006-10-12 2007-10-11 Procédé de commutation en mode de radiodiffusion de service mbms, procédé de transfert de terminal, station de base et réseau WO2008046347A1 (fr)

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CNA2006101391328A CN101163324A (zh) 2006-10-12 2006-10-12 多播广播业务的播送模式转换方法、终端切换方法及基站

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EP2690907A1 (fr) * 2011-03-21 2014-01-29 ZTE Corporation Procédé de bascule entre modes de transmission mbms, dispositif et équipement utilisateur
WO2015061983A1 (fr) * 2013-10-30 2015-05-07 Qualcomm Incorporated Continuité de service pour des communications de groupe sur un service évolué de multidiffusion en diffusion multimédia
CN110892757A (zh) * 2017-07-21 2020-03-17 昕诺飞控股有限公司 控制低功率广域网的端节点
WO2021041601A1 (fr) * 2019-08-29 2021-03-04 Qualcomm Incorporated Distribution de services de diffusion à l'aide de différents modes de support de radiodiffusion/multidiffusion
CN114390442A (zh) * 2020-10-16 2022-04-22 成都鼎桥通信技术有限公司 Nr小区中多播广播业务的传输方法与系统
CN115398938A (zh) * 2021-03-23 2022-11-25 北京小米移动软件有限公司 接收模式的确定方法、装置及通信设备

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KR101638799B1 (ko) * 2009-11-05 2016-07-13 삼성전자주식회사 무선통신 시스템에서 기지국과 단말 간 슬립 사이클 설정을 협상하기 위한 장치 및 방법
WO2014032291A1 (fr) 2012-08-31 2014-03-06 Telefonaktiebolaget L M Ericsson(Publ) Procédés et dispositifs pour une commutation entre un service de transmission en continu de pair à pair et un service de transmission en continu d'un service de radiodiffusion multimédia multidestinataire
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CN111093179B (zh) * 2019-12-27 2023-10-27 合肥中感微电子有限公司 无线通信方法、装置和系统
CN111901765A (zh) * 2020-04-27 2020-11-06 中兴通讯股份有限公司 模式配置方法、装置、设备和存储介质
CN113784399B (zh) * 2020-06-10 2022-11-29 中国移动通信有限公司研究院 多播广播服务业务的切换方法及设备
CN113840242B (zh) * 2020-06-24 2023-05-05 中国移动通信有限公司研究院 多播广播业务的传输方法及设备
CN115668993B (zh) * 2020-07-07 2024-08-27 Oppo广东移动通信有限公司 接收本地mbs业务的方法及装置、终端设备、网络设备
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CN114095989B (zh) * 2020-08-25 2023-09-12 大唐移动通信设备有限公司 一种传输方式转换方法及装置
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EP2690907A1 (fr) * 2011-03-21 2014-01-29 ZTE Corporation Procédé de bascule entre modes de transmission mbms, dispositif et équipement utilisateur
EP2690907A4 (fr) * 2011-03-21 2014-10-01 Zte Corp Procédé de bascule entre modes de transmission mbms, dispositif et équipement utilisateur
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WO2015061983A1 (fr) * 2013-10-30 2015-05-07 Qualcomm Incorporated Continuité de service pour des communications de groupe sur un service évolué de multidiffusion en diffusion multimédia
US10277416B2 (en) 2013-10-30 2019-04-30 Qualcomm Incorporated Service continuity for group communications over evolved multimedia broadcast multicast service
CN110892757A (zh) * 2017-07-21 2020-03-17 昕诺飞控股有限公司 控制低功率广域网的端节点
CN110892757B (zh) * 2017-07-21 2023-09-26 昕诺飞控股有限公司 控制低功率广域网的端节点
WO2021041601A1 (fr) * 2019-08-29 2021-03-04 Qualcomm Incorporated Distribution de services de diffusion à l'aide de différents modes de support de radiodiffusion/multidiffusion
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CN114390442A (zh) * 2020-10-16 2022-04-22 成都鼎桥通信技术有限公司 Nr小区中多播广播业务的传输方法与系统
CN114390442B (zh) * 2020-10-16 2023-04-18 成都鼎桥通信技术有限公司 Nr小区中多播广播业务的传输方法与系统
CN115398938A (zh) * 2021-03-23 2022-11-25 北京小米移动软件有限公司 接收模式的确定方法、装置及通信设备

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