CN110621054A - Routing method, base station and communication system for multimedia broadcast multicast service - Google Patents

Routing method, base station and communication system for multimedia broadcast multicast service Download PDF

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Publication number
CN110621054A
CN110621054A CN201910759919.1A CN201910759919A CN110621054A CN 110621054 A CN110621054 A CN 110621054A CN 201910759919 A CN201910759919 A CN 201910759919A CN 110621054 A CN110621054 A CN 110621054A
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terminal
multimedia broadcast
broadcast multicast
multicast service
core network
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CN201910759919.1A
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CN110621054B (en
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陈秀
叶觉明
张璐
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Hytera Communications Corp Ltd
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Hytera Communications Corp Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W24/00Supervisory, monitoring or testing arrangements
    • H04W24/02Arrangements for optimising operational condition
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application discloses a routing method, a base station and a communication system based on multimedia broadcast multicast service, wherein the method comprises the steps of judging whether a terminal has the capability of receiving the multimedia broadcast multicast service; if the terminal has the capability of receiving the multimedia broadcast multicast service, selecting a core network currently carrying out the multimedia multicast service for the terminal so as to enable the terminal to complete the core network access flow. By the method, the terminal can be accessed to the core network, and the terminal is guaranteed to receive the multimedia broadcast multicast service.

Description

Routing method, base station and communication system for multimedia broadcast multicast service
Technical Field
The present application relates to the field of communications technologies, and in particular, to a routing method, a base station, and a communication system based on a multimedia broadcast multicast service.
Background
Multimedia Broadcast Multicast Service (MBMS) is a Mobile phone Multimedia technical scheme based on Universal Mobile Telecommunications System (UMTS) proposed by the Third Generation Partnership Project (3 GPP) organization, which is a point-to-multipoint Service for transmitting data to a plurality of receiving terminals through one data source in a wireless network, thereby being capable of providing Multimedia Broadcast Service for users in a cell; MBMS technology has evolved into Enhanced Multimedia Broadcast Multicast Service (eMBMS) in fourth generation mobile communication technology (4G). When a key task Push-to-Talk (MCPTT) in 3GPP R13 is used for broadcasting a group call service, downlink signaling and media adopt an eMBMS function to realize the broadcasting capability; in the MCPTT service, the MCPTT server communicates with a User Equipment (UE) through a core network, and is responsible for establishment of a multicast bearer and interconversion between multicast and unicast, which is a control center of a multimedia broadcast multicast service.
In Long-Term research and development, the inventor of the present application finds that a base station in a Long Term Evolution (LTE) system can be connected to multiple core networks at the same time, and the base station generally selects a route for a terminal according to the capability, load state or polling principle of the core networks. Supposing that a base station supports an eMBMS service, the base station is simultaneously connected with a plurality of core networks, some core networks are connected with an MCPTT server which carries out multimedia broadcast multicast service, and some core networks are not connected with the MCPTT server; in the process of accessing the core network, for a terminal with multimedia broadcast multicast service capability, the base station may select a core network which is not connected with the MCPTT server for the terminal to complete an access process, and then subsequent unicast and multicast services of the terminal are mutually converted and the like cannot be controlled by the core network, and the multimedia broadcast multicast service capability of the terminal cannot be reflected.
Disclosure of Invention
The present application mainly solves the problem of providing a routing method, a base station and a communication system based on multimedia broadcast multicast service, which can enable a terminal to access a core network and ensure the reception of the multimedia broadcast multicast service by the terminal.
In order to solve the technical problem, the technical scheme adopted by the application is to provide a routing method based on a multimedia broadcast multicast service, and the method comprises the steps of judging whether a terminal has the capability of receiving the multimedia broadcast multicast service; if the terminal has the capability of receiving the multimedia broadcast multicast service, selecting a core network currently carrying out the multimedia multicast service for the terminal so as to enable the terminal to complete the core network access flow.
In order to solve the above technical problem, another technical solution adopted by the present application is to provide a routing method based on a multimedia broadcast multicast service, where the method is applied to a terminal and includes: if the terminal has the capability of receiving the multimedia broadcast multicast service, carrying a multimedia broadcast multicast capability field in a radio resource control connection establishment completion message in the process of establishing the radio resource connection and indicating that the terminal has the capability of receiving the multimedia broadcast multicast service; if the terminal does not have the capability of receiving the multimedia broadcast multicast service, the terminal does not carry a multimedia broadcast multicast capability field in a radio resource control connection establishment completion message in the radio resource connection establishment process.
In order to solve the above technical problem, another technical solution adopted by the present application is to provide a base station, where the base station includes a processor, and the processor is configured to determine whether a terminal has a capability of receiving a multimedia broadcast multicast service; and if the terminal has the capability of receiving the multimedia broadcast multicast service, selecting a core network currently carrying out the multimedia multicast service for the terminal so as to enable the terminal to communicate with a server connected with the core network.
In order to solve the above technical problem, another technical solution adopted by the present application is to provide a communication system, where the communication system includes a terminal, a base station, and a core network, where the terminal reports whether the terminal has a capability of receiving a multimedia broadcast multicast service, and the base station determines whether the terminal has the capability of receiving the multimedia broadcast multicast service; if the terminal has the capability of receiving the multimedia broadcast multicast service, selecting a core network currently carrying out the multimedia multicast service for the terminal so that the terminal completes the core network access flow and executes the multimedia broadcast multicast service.
Through the scheme, the beneficial effects of the application are that: the base station detects whether the terminal has the receiving capability of the multimedia broadcast multicast service, and selects a core network which is performing the multimedia broadcast multicast service for the terminal when the terminal has the receiving capability, thereby ensuring the receiving of the multimedia broadcast multicast service by the terminal.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
fig. 1 is a schematic flowchart illustrating an embodiment of a routing method based on a multimedia broadcast multicast service provided in the present application;
fig. 2 is a schematic flowchart of another embodiment of a routing method based on a multimedia broadcast multicast service provided in the present application;
fig. 3 is a schematic interaction diagram of a base station and a core network in another embodiment of the routing method based on the mbms service provided in the present application;
fig. 4 is a schematic connection diagram of a terminal, a base station and a core network in another embodiment of the routing method for mbms service provided in the present application;
fig. 5 is a schematic flowchart illustrating a routing method based on mbms according to another embodiment of the present application;
fig. 6 is a schematic interaction diagram of a base station and a terminal in another embodiment of the routing method based on the mbms service provided in the present application;
fig. 7 is a schematic structural diagram of an embodiment of a base station provided in the present application;
fig. 8 is a schematic structural diagram of an embodiment of a communication system provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic flowchart illustrating an embodiment of a routing method based on a multimedia broadcast multicast service provided in the present application, where the method includes:
step 11: and judging whether the terminal has the capability of receiving the multimedia broadcast multicast service.
In order to enable a terminal with a multimedia broadcast multicast service receiving capability to communicate with a device on a core network side, a Base station (Evolved Node Base) first determines the capability of the terminal.
Step 12: if the terminal has the capability of receiving the multimedia broadcast multicast service, selecting a core network currently carrying out the multimedia multicast service for the terminal so as to enable the terminal to complete the core network access flow.
The server can be a key task push-to-talk server, after detecting that the terminal has the receiving capability of the multimedia broadcast multicast service, the base station can select a route for the terminal and select a core network which is currently carrying out the multimedia broadcast multicast service, so that the terminal can communicate with the server connected with the core network through the base station, the multimedia broadcast multicast service initiated by the server is received, the terminal is prevented from being connected with the core network which is not connected with the server, the terminal cannot be connected with the server, and the effective receiving of the multimedia broadcast multicast service cannot be guaranteed.
The embodiment provides a routing method based on a multimedia broadcast multicast service, which detects whether a terminal has the receiving capability of the multimedia broadcast multicast service through a base station, and selects a core network which is performing the multimedia broadcast multicast service for the terminal when the terminal has the receiving capability, so that the terminal and a server can communicate through the base station, and the reception of the multimedia broadcast multicast service by the terminal is guaranteed.
Referring to fig. 2, fig. 2 is a schematic flowchart illustrating another embodiment of a routing method based on a multimedia broadcast multicast service provided in the present application, where the method includes:
step 201: the MCE sends an M3 setup request message to the MME.
The M3 establishment request message includes MCE Global identity (Global MCE ID) information, as shown in fig. 3, the core network includes MCE (Multi-cell/Multi-cast Coordination Entity) and MME (Mobility Management Entity), the base station sends an M2 establishment request message to the MCE in order to acquire the core network to which the current multimedia broadcast Multicast service belongs, and the M2 establishment request message includes Global eNB ID (base station Global identity information); and then receiving an M2 establishment response message sent by the MCE, wherein the M2 establishment response message comprises a Global MCE ID (MCE Global identification information).
Step 202: the MCE receives an M3 establishment response message sent by the MME.
The M3 setup response message includes the Served GUMMEIs (Served global Unique identity MME Identifiers) information of the MME, which includes the PLMN (Public land mobile Network) of the service, the MME group identity of the service, and the MME code of the service.
Step 203: and the MCE records the GUMMEI information of the MME corresponding to the M3 interface.
Step 204: the MCE receives the multimedia broadcast multicast session start request message sent by the MME through the M3 interface.
The multimedia broadcast multicast session start request message includes MME MBMS M3AP ID information.
Step 205: and according to the record, judging the GUMMEI of the MME corresponding to the M3 interface for receiving the multimedia broadcast multicast session start request message, and carrying GUMMI information in the multimedia broadcast multicast session start request message sent to the base station.
The multimedia broadcast multicast session start response message includes MCE MBMS M2AP (Application Protocol) ID information and Served GUMMIs information of the MME; when the core network side initiates the multimedia broadcast multicast session, the multimedia broadcast multicast session start request message is sent to the MCE through M3AP, the MCE judges the GUMMEI information of the session initiating terminal, and carries the ServedGUMMIs information of the MME in the multimedia broadcast multicast session start request message sent to the base station through M2 AP.
Step 206: and receiving a multimedia broadcast multicast session start request message which is sent by the MCM and carries the Served GUMMEIs of the session initiating terminal MME.
Step 207: and maintaining a corresponding relation table of MCE MBMS M2AP ID, eNB MBMS M2AP ID and service GUMMEIs.
The base station establishes a corresponding relation table among MCE MBMS M2AP ID (M2 interface ID from MCE to eNB), eNB MBMS M2AP ID (M2 interface ID from eNB to MCE) and used GUMMEIs, and stores the table; and then the base station sends a multimedia broadcast multicast session start response message to the MCE, wherein the multimedia broadcast multicast session start response message comprises MCE MBMSM2AP ID information and eNB MBMS M2AP ID information.
Step 208: and receiving a radio resource control connection establishment completion message reported by the terminal.
The Radio Resource Control (RRC) connection setup complete message includes indication information that the terminal has a capability of receiving the multimedia broadcast multicast service.
Step 209: and judging whether the terminal has the capability of receiving the multimedia broadcast multicast service or not according to the indication information.
The indication information may be a field, and when the value of the field is True, it is determined that the terminal has the capability of receiving the mbms service.
Step 210: and confirming the core network currently carrying out the multimedia broadcast multicast service according to the corresponding relation table.
When the multimedia broadcast multicast service starts, the MME sends a session request to the base station through the MCE, and the base station can judge which core network is currently carrying out multimedia broadcast multicast session transmission by utilizing a corresponding relation table among the stored MCE MBMS M2AP ID information, eNB MBMS M2AP ID information and the Served GUMMEIs information, thereby selecting a route for a terminal with the multimedia broadcast multicast service receiving capability.
Step 211: and selecting the core network confirmed according to the corresponding relation table when selecting the route for the terminal so as to enable the terminal to finish the core network access flow.
The base station accesses the terminal to a core network which is currently performing the multimedia multicast service so that the terminal receives the multimedia broadcast multicast service, and realizes the conversion between multicast and unicast under the control of the server so as to meet the requirements of different service scenes.
The base station can be connected to multiple core networks simultaneously, and can combine the capability and load status of the core networks and the scheme of selecting the route for the terminal according to the polling principle with the method of selecting the route for the terminal in the embodiment. The higher the capability value of the core network is, the more the number of terminals allowed to be accessed by the core network is, and the higher the possibility that the terminal is accessed by the core network is; for example, if the capability value of the core network 1 is 255 and the capability value of the core network 2 is 1, the probability of accessing the core network 1 is about 255 times that of accessing the core network 2 when the terminal accesses the network. The more the load of the core network is, the smaller the probability of the terminal accessing the core network is; for example, if the core network 1 has a high load at this time, the base station preferentially selects another core network for the terminal when the terminal performs access. Accessing the terminal to one of the plurality of core networks in sequence according to a polling mode; for example, when the terminal 1 accesses, the base station selects the core network 1 for the terminal 1; when the terminal 2 is accessed, the base station selects a core network 2 for the terminal 2; when the terminal 3 is accessed, the base station selects a core network 1 for the terminal 3; when the terminal 4 accesses, the base station selects the core network 2 for the terminal 4.
In a specific embodiment, as shown in fig. 4, M1 is a user plane interface, M2 is an internal control panel interface of an Evolved UMTS Terrestrial Radio Access Network (E-UTRAN), M3 is a control panel interface between the E-UTRAN and an Evolved core Network, and S1 and Sm are other interfaces; the base station is connected with a core network 1, a core network 2 and a core network 3, the capacity and the load of the three core networks are equivalent, the core network 1 is connected with an MCPTT server, but no eMBMS session is issued at the moment. The terminal 1 reports its receiving capability with the multimedia broadcast multicast service in the access process, but since there is no multimedia broadcast multicast service at this time, the routing of the terminal 1 can follow the original routing rule, for example, according to the polling rule, the base station selects the core network 1 for the terminal 1. The terminal 2 does not carry the identifier with the multimedia broadcast multicast service receiving capability in the access process, and the base station selects the core network 2 for the terminal 2 according to the polling rule. The terminal 3 reports its receiving capability with the multimedia broadcast multicast service in the access process, but the base station selects the core network 3 for the terminal 3 according to the polling rule because there is no multimedia broadcast multicast service at this time.
In another specific embodiment, the base station is connected to the core network 1, the core network 2 and the core network 3, the capacity and the load of the three core networks are equivalent, the core network 1 and the core network 2 are both connected to the MCPTT server, and the core network 2 has an eMBMS session to issue at this time. The terminal 1 reports its receiving ability with multimedia broadcast multicast service in the access process, and the base station selects the core network 2 for the terminal 1. The terminal 2 does not carry the identifier with the receiving capability of the multimedia broadcast multicast service in the access process, and the base station selects the route according to the original rule, for example, selects the core network 1 for the terminal 2. The terminal 3 reports its receiving capability with multimedia broadcast multicast service in the access process, and the base station selects the core network 2 for the terminal 3.
The terminal can report the receiving capacity of the multimedia broadcast multicast service to the base station, and the base station can preferentially select a core network which is carrying out the multimedia broadcast multicast service for the terminal when the terminal has the capacity of receiving the multimedia broadcast multicast service, so as to complete the subsequent access flow, thereby well showing and ensuring the receiving capacity of the multimedia broadcast multicast service of the terminal.
Referring to fig. 5, fig. 5 is a schematic flowchart illustrating a routing method based on mbms according to another embodiment of the present application, where the method is applied to a terminal, and the method includes:
step 51: if the terminal has the capability of receiving the multimedia broadcast multicast service, the terminal is carried with the multimedia broadcast multicast capability field in the radio resource control connection establishment completion message in the radio resource connection establishment process and indicates that the terminal has the capability of receiving the multimedia broadcast multicast service.
In a specific embodiment, as shown in fig. 6, the base station receives a rrc connection request message sent by the terminal; then sending a wireless resource control connection establishment message to the terminal; and then receiving a radio resource control connection establishment completion message sent by the terminal.
Step 52: if the terminal does not have the capability of receiving the multimedia broadcast multicast service, the terminal does not carry a multimedia broadcast multicast capability field in a radio resource control connection establishment completion message in the radio resource connection establishment process.
In the access process of the terminal, adding an MBMS capability field with the value of True in a radio resource control connection establishment completion message; when the terminal has the capability of receiving the multimedia broadcast multicast service, the field value is True; when the terminal does not have the capability of receiving the multimedia broadcast multicast service, the field is not carried by the radio resource control connection establishment completion message.
Referring to fig. 7, fig. 7 is a schematic structural diagram of an embodiment of a base station provided in the present application, where the base station 70 includes a processor 71, and the processor 71 is configured to determine whether a terminal has a capability of receiving a multimedia broadcast multicast service; if the terminal has the capability of receiving the multimedia broadcast multicast service, the processor 71 selects a core network currently performing the multimedia multicast service for the terminal, so that the terminal communicates with a server connected to the core network.
Referring to fig. 8, fig. 8 is a schematic structural diagram of an embodiment of a communication system provided in the present application. The communication system 80 comprises a terminal 81, a base station 82 and a core network 83, wherein the base station 82 is respectively connected with the terminal 81 and the core network 83, the terminal 81 reports whether the terminal 81 has the capability of receiving the multimedia broadcast multicast service, and the base station 82 judges whether the terminal 81 has the capability of receiving the multimedia broadcast multicast service; if the terminal 81 has the capability of receiving the mbms service, the base station 82 selects the core network 83 currently performing the mbms service for the terminal 81, so that the terminal 81 completes the access procedure of the core network 83 to perform the mbms service.
The communication system 80 takes into consideration whether the terminal 81 has the capability of receiving the multimedia broadcast multicast service into the routing of the base station 82, and if the terminal 81 has the capability of receiving the multimedia broadcast multicast service, the base station 82 selects the core network 83 which is performing the multimedia broadcast multicast transmission for the terminal to complete the subsequent access process, so that the reception of the multimedia broadcast multicast service is more reliably ensured.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules or units is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of net units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above embodiments are merely examples, and not intended to limit the scope of the present application, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present application, or those directly or indirectly applied to other related arts, are included in the scope of the present application.

Claims (10)

1. A routing method based on Multimedia Broadcast Multicast Service (MBMS) is characterized by comprising the following steps:
judging whether the terminal has the capability of receiving the multimedia broadcast multicast service;
and if so, selecting the core network currently carrying out the multimedia multicast service for the terminal so that the terminal completes the core network access process.
2. The MBMS routing method as claimed in claim 1, wherein the step of determining whether the terminal has the capability of receiving MBMS comprises:
receiving a radio resource control connection establishment completion message reported by the terminal, wherein the radio resource control connection establishment completion message comprises indication information that the terminal has the capability of receiving the multimedia broadcast multicast service;
and judging whether the terminal has the capability of receiving the multimedia broadcast multicast service or not according to the indication information.
3. The MBMS routing method according to claim 1, wherein the core network comprises an MCE and an MME, and the step of determining whether the terminal has the capability of receiving MBMS is preceded by the steps of:
receiving a multimedia broadcast multicast session start request message which is sent by an MCM and carries the Served GUMMEIs of a session initiating terminal MME;
and maintaining a corresponding relation table of MCE MBMS M2AP ID, eNB MBMS M2AP ID and service GUMMEIs.
4. The MBMS routing method as claimed in claim 3, wherein the step of selecting the core network currently performing the MBMS for the terminal so that the terminal completes the core network access procedure comprises:
confirming the core network currently performing the multimedia broadcast multicast service according to the corresponding relation table;
and selecting the core network confirmed according to the corresponding relation table when selecting the route for the terminal so as to enable the terminal to finish the core network access process.
5. The multimedia broadcast multicast service based routing method of claim 1, wherein the method comprises:
the MCE sends an M3 establishment request message to the MME;
the MCE receives an M3 establishment response message sent by the MME, wherein the M3 establishment response message comprises used GUMMEIs information of the MME;
and the MCE records the GUMMEI information of the MME corresponding to the M3 interface.
6. The multimedia broadcast multicast service based routing method of claim 5, wherein the method comprises:
the MCE receives a multimedia broadcast multicast session starting request message sent by the MME through the M3 interface;
and according to the record, judging the GUMMEI of the MME corresponding to the M3 interface for receiving the multimedia broadcast multicast session start request message, and carrying the GUMMI information in the multimedia broadcast multicast session start request message sent to the base station.
7. The method of claim 1, wherein the step of selecting the core network currently performing the mbms for the terminal so that the terminal completes a core network access procedure comprises:
accessing the terminal to a core network currently performing the multimedia multicast service, so that the terminal receives the multimedia broadcast multicast service and realizes the conversion between multicast and unicast under the control of the server;
wherein the server is a mission critical push-to-talk server.
8. A route selection method based on multimedia broadcast multicast service is applied to a terminal, and is characterized by comprising the following steps:
if the terminal has the capability of receiving the multimedia broadcast multicast service, carrying a multimedia broadcast multicast capability field in a radio resource control connection establishment completion message in the process of establishing the radio resource connection to indicate that the terminal has the capability of receiving the multimedia broadcast multicast service;
and if the terminal does not have the capability of receiving the multimedia broadcast multicast service, the terminal does not carry the multimedia broadcast multicast capability field in a radio resource control connection establishment completion message in the radio resource connection establishment process.
9. A base station comprising a processor configured to determine whether a terminal has a capability to receive a multimedia broadcast multicast service; and if so, selecting a core network currently carrying out the multimedia multicast service for the terminal so as to enable the terminal to communicate with a server connected with the core network.
10. A communication system comprising a terminal, a base station and a core network, wherein,
the terminal reports whether the terminal has the capability of receiving the multimedia broadcast multicast service; the base station judges whether the terminal has the capability of receiving the multimedia broadcast multicast service; if so, selecting the core network currently carrying out the multimedia multicast service for the terminal so that the terminal completes the core network access process and executes the multimedia broadcast multicast service.
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