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WO2007121686A1 - Système et procédé pour réaliser un mécanisme de négociation de qualité de service - Google Patents

Système et procédé pour réaliser un mécanisme de négociation de qualité de service Download PDF

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Publication number
WO2007121686A1
WO2007121686A1 PCT/CN2007/001386 CN2007001386W WO2007121686A1 WO 2007121686 A1 WO2007121686 A1 WO 2007121686A1 CN 2007001386 W CN2007001386 W CN 2007001386W WO 2007121686 A1 WO2007121686 A1 WO 2007121686A1
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WO
WIPO (PCT)
Prior art keywords
qos
information
degraded
qos information
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2007/001386
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English (en)
Chinese (zh)
Inventor
Hua Wei
Ying Wang
Wenyu Liu
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication of WO2007121686A1 publication Critical patent/WO2007121686A1/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/805—QOS or priority aware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/15—Flow control; Congestion control in relation to multipoint traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/824—Applicable to portable or mobile terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to a bearer control technology in a mobile communication system, and more particularly to a system and method for implementing a quality of service (QoS) negotiation mechanism in a Service Based Bearer Control (SBBC) and an access gateway (Access) Gateway, AGW), Policy and Charging Rules Function (PCRF) unit, Application Function (AF) unit.
  • QoS quality of service
  • SBBC Service Based Bearer Control
  • AGW access gateway
  • PCRF Policy and Charging Rules Function
  • AF Application Function
  • the basic process of the service-based bearer control technology is: when the user initiates a service request, the application layer function AF unit receives the service request message from the user, and carries the pair in the service clearing message according to the standardized QoS parameter mapping rule.
  • the description of the service is mapped to the QoS parameters of the content such as bandwidth, delay, delay jitter, etc., and the service that is authorized by the application layer is sent to the PCRF unit through the interface with the PCRF unit of the policy and charging rule function, that is, the Tx interface.
  • the PCRF unit determines the QoS information of the application layer authorization sent by the application layer according to a pre-defined local policy, and translates the resulting QoS parameters into a QoS expression form that the access gateway AGW can understand, and The AGW is notified to the AGW through the interface between the AGW and the AGW.
  • the user interacts with the application layer, the user initiates a bearer resource reservation request to the AGW.
  • the AGW compares the application layer authorization and the local policy decision received from the PCRF.
  • the bearer resource refers to a resource at the transport level.
  • the AF unit may be: Proxy Call Session Control Function (P-CSCF) service call session control function (Serving Call Session Control) Function, S-CSCF), application server (AS) and other network entities.
  • P-CSCF Proxy Call Session Control Function
  • S-CSCF Serving Call Session Control Function
  • AS application server
  • AF unit cartridge is referred to as AF
  • PCRF unit is referred to as PCRJF.
  • the authorization of the application layer refers to: according to the description of the media type in the service request initiated by the user, according to the standardized QoS parameter mapping rule mapping, it is translated into a corresponding QoS parameter numerical expression form, and according to the user saved in the network. What is the process of signing the QoS request for the service initiated by the user?
  • the system includes: a mobile station (MS) 11, a radio access network (RAN) 12, an AGW 13, a PCRF 14, and an AF 15, wherein the AGW 14 includes:
  • the interaction unit 131, the QoS processing unit 132, the bearer network resource management unit 133, and the PCRF 14 include: a signaling interaction unit 141, a QoS processing unit 142, and a local policy unit 143.
  • the AF15 includes: a signaling interaction unit 151, a QoS translation unit 152, QoS processing unit 153.
  • the MS11 interacts with the signaling interaction unit 151 in the AF 15 through the signaling interaction unit 131 in the RAN 12 and the AGW 13, and also establishes resource information through the RAN 12 interacting with the signaling interaction unit 131 in the AGW 13.
  • the RAN 12 is configured to transmit information between the MS11 and the signaling interaction unit 131 in the AGW 13, and establish a radio link bearer connection for the user.
  • the signaling interaction unit 131 in the AGW 13 interacts with the MS11 through the RAN 12 to establish resource information, and interacts with the signaling interaction unit 151 in the AF 15 to apply the layer information.
  • the QoS information of the application layer authorization sent by the signaling interaction unit 141 in the PCRF 14 is received.
  • the QoS processing unit 132 is forwarded to receive information about whether the bearer network resource sent by the QoS processing unit 132 meets or exceeds the QoS authorized by the application layer; and the QoS authorization request may also be sent to the signaling interaction unit 141 in the PCRF 14.
  • the QoS processing unit 132 in the AGW 13 receives the QoS information of the application layer authorization sent by the signaling interaction unit, and then forwards the QoS information to the bearer network resource management unit 133, and receives whether the bearer network resource sent by the bearer network resource management unit 133 meets or exceeds the application layer. Authorized QoS information After that, it is forwarded to the signaling interaction unit 131.
  • the bearer network resource management unit 133 in the AGW 13 receives the QoS information of the application layer authorization sent by the QoS processing unit 132, and determines whether the bearer network resource meets or exceeds the QoS authorized by the application layer, and returns the bearer network resource to the QoS processing unit 132. Information that meets or exceeds the QoS of the application layer authorization.
  • the AGW 13 determines whether the bearer network resource exceeds the QoS authorized by the application layer, and if the application network initiates the QoS After negotiation, the judgment is made as to whether the bearer network resource satisfies the QoS of the application layer authorization.
  • the signaling interaction unit 141 in the PCRP 14 receives the QoS information of the application layer authorization sent by the signaling interaction unit 151 in the AF 15, sends the QoS information of the application layer authorization to the QoS processing unit 142, and receives the application layer authorization returned by the QoS processing unit 142. Whether the QoS information passes the information of the local policy ruling, and sends the application layer authorization QoS information to the signaling interaction unit 131 in the AGW; and may also receive the QoS authorization request sent by the signaling interaction unit 131 in the AGW, and may also send the message to the AF15.
  • the interaction unit 151 is caused to transmit information requesting QoS of the application layer authorization.
  • the local policy decision refers to: The PCRF that provides the service for the user performs the QoS policy decision according to the pre-defined local policy according to the QoS information authorized by the application layer.
  • the QoS processing unit 142 in the PCR 14 receives the application layer authorization QoS information sent by the signaling interaction unit 141, and then forwards the information to the local policy unit 143, and receives the information of whether the application layer authorization QoS information sent by the local policy unit 143 passes the local policy. After that, it is forwarded to the signaling interaction unit 141.
  • the local policy unit 143 in the PCR 14 receives the application layer authorization QoS information sent by the QoS processing unit 142, determines whether the application layer authorization QoS information is determined by the local policy, and returns the application layer authorization QoS information to the QoS processing unit 142.
  • the signaling interaction unit 151 in the AF 15 passes through the signaling interaction unit 131 in the AGW 13 ,
  • the RAN 12 and the MS11 exchange application layer information;
  • the application layer information sent by the MS 11 is sent to the QoS translation unit 152, and the QoS information of the application layer authorization sent by the QoS processing unit 153 is received, and then forwarded to the signaling interaction unit 141 in the PCRP 14;
  • the signaling of the QoS requested by the application layer is sent by the signaling interaction unit 141 in the PCRF 14.
  • the QoS translation unit 152 in the AF 15 receives the application layer information sent by the MS11 sent by the signaling interaction unit 151, translates the QoS information, and sends the QoS information to the QoS processing unit 153.
  • the QoS processing unit 153 in the AF 15 receives the QoS information sent by the QoS translation unit 152, authorizes the received QoS information, and transmits the QoS information of the application layer authorization to the signaling interaction unit 151.
  • FIG. 2 is a schematic diagram of an implementation process of a QoS negotiation mechanism when an access network initiates a QoS authorization request in a non-roaming scenario in the prior art, and the process includes the following steps:
  • Step 201 Perform application layer information interaction between the MS and the AF.
  • the step 201 is specifically: after the user initiates the service request, the application layer information is exchanged between the user MS and the AF, and the AF determines the QoS information required for the current service according to the service type requested by the MS, and according to the application layer authentication policy. Authorize the QoS information.
  • Step 202 The MS requests the AGW to reserve the bearer resource.
  • the step 202 is specifically as follows:
  • the MS requests the network that provides the data transmission service to reserve the bearer resources required for the service.
  • the MS passes binding information for authenticating the application layer session data stream, and the binding information can also be used to specify the entity for resource reservation authorization approval.
  • step 202 may be performed after step 201 as shown in FIG. 2, or may be performed simultaneously with step 201.
  • Step 203 The AGW sends a QoS authorization request to the PCRF.
  • the step 203 is specifically: the AGW accepts the resource reservation request requested by the MS, but considers that the resource requested by the MS needs to be authorized and approved by the network policy ruling entity, and may be based on the binding information carried by the MS, or The user information carried by the MS at the time of registration to determine a combination Appropriate policy ruling entity PCRF.
  • the AGW requests the PCRF to authorize the QoS authorization corresponding to the resource to be reserved according to the resource reserved by the MS.
  • Step 204 The PCRF requests the QoS information of the application layer authorization from the AF.
  • the step 204 is specifically: after the PCRF receives the QoS authorization request from the AGW, according to
  • the information in the QoS authorization request is QoS information authorized by the AF application application layer that provides the current service service.
  • Step 205 The AF sends the QoS information of the application layer authorization to the PCRF.
  • the step 205 is specifically as follows: The AF finds information about the user's current service in the application layer according to the user information carried in the QoS authorization request of the PCRF and the information content of the current service session, and the application layer pairs the current service. Authorized QoS information, and return the QoS information authorized by the application layer to the PCRF.
  • step 205 may be performed after step 204 as shown in FIG. 2, or may be performed at any position between step 201 and step 203. Step 205 is performed between step 201 and step 203. Step 204 may not be performed in FIG. 2, and the step 205 is specifically: the AF sends the QoS information authorized by the application layer to the PCRF for local policy arbitration.
  • Step 206 The PCRF determines that the QoS information authorized by the application layer is determined by the local policy.
  • the step 206 is specifically: after receiving the QoS information authorized by the service application layer sent by the AF, the PCRF performs a local policy ruling on the QoS information by the merging local policy. If the QoS information authorized by the application layer for the current service is within the QoS range allowed by the local policy, the PCRF considers that the service can use the local network resource according to the QoS information authorized by the application layer, otherwise the PCRF determines that the QoS negotiation fails. And end this process.
  • the PCRF determines that the QoS negotiation fails.
  • the PCRF sends a QoS negotiation failure message to the AF.
  • the AF sends a QoS negotiation failure message to the MS through the AGW.
  • Step 207 The PCRF sends the authorized QoS information to the AGW.
  • the step 207 is specifically: the PCRF sends the QoS information that is determined by the local policy to the QoS information.
  • the AGW instructs the AGW to establish a bearer connection for the current service of the user according to the QoS information.
  • the PCRF converts the QoS information of the application layer authorization into a form that can be understood by the AGW and sends it to the AGW.
  • Step 208 The AGW determines that the bearer network resource currently available to the user is within the authorized QoS range.
  • the step 208 is specifically: after receiving the QoS information from the PCRF, the AGW compares the application layer authorization QoS information with the QoS information applied by the user to the application, if the QoS requested by the user to the AGW is within the QoS range authorized by the application layer. And accepting the QoS information requested by the user, and providing the bearer resource connection for the current service of the user according to the QoS information.
  • the prior art does not provide processing if the QoS requested by the user to the AGW exceeds the QoS information authorized by the application layer.
  • the bearer resource is reserved in step 202, and the reserved bearer resource can certainly satisfy the QoS information of the application layer authorization. Therefore, in step 208, the bearer resource reserved by the user after requesting the AGW
  • the corresponding QoS information can only be beyond the scope authorized by the application layer and local policy or within the scope authorized by the application layer and local policy.
  • FIG. 2 includes optional steps 209 to 210 for the AGW to return a message confirming the QoS information to the AF.
  • Step 209 The AGW returns an acknowledgement message to the QoS information to the PCRF.
  • Step 210 The PCRF sends a message confirming the QoS information to the AF.
  • step 210 after receiving the acknowledgment message for the QoS information from the AGW, the PCRF notifies the AF of the received QoS information.
  • Step 211 The AGW notifies the user that the resource link required by the current service of the MS has been established.
  • step 211 may be performed after step 210 as shown in FIG. 2, or may be performed at any position after step 208.
  • the media stream link between the user's MS and the peer end can be successfully established, and the service initiated by the user can be started.
  • Step 301 Same as step 201.
  • Step 302 The AF sends the QoS information of the application layer authorization to the PCRF.
  • step 302 the AF sends the QoS information authorized by the application layer to the PCRF for local policy ruling.
  • Steps 303 to 304 The same as steps 206 to 207.
  • Step 305 The AGW determines that the bearer network resource currently available to the user satisfies the authorized QoS information.
  • the step 305 is specifically as follows: After receiving the QoS information from the PCRF, the AGW determines whether the current bearer network resource condition available to the user can meet the resource requirement of the QoS information. If the current QoS information is available to the user, the QoS information is used to provide a bearer resource connection for the current service of the user. Otherwise, the AGW determines that the QoS negotiation fails, and ends the process.
  • the AGW After the AGW determines that the QoS negotiation fails, the AGW can send multiple QoS negotiation failure messages to the AF.
  • the AF sends a QoS negotiation failure message to the MS through the AGW.
  • Step 306 to step 308 The same as steps 209 to 211.
  • the media stream link between the user's MS and the peer end can be successfully established, and the service initiated by the user can be started.
  • the AGW that provides the access network service for the user is located in the visited network.
  • the PCRF connected to the AGW is also in the visited network, and the PCRF in the visited network is marked as the visited PCRF (VPCRP).
  • the PCRP is called the home PCRF.
  • the difference between the HPCRF QoS negotiation mechanism and the non-roaming scenario in the roaming scenario is that the HPCRF is responsible for forwarding the information between the AF and the VPCRP, and because the VPCR is located in the visited network that provides the bearer connection service for the user. , which is more aware of the resource usage of the access network than the HPCR located in the home network, so the local policy decision is completed by the PCRF in the non-roaming scenario.
  • the function of the etc. is done by the VPCRF.
  • FIG. 4 is a schematic diagram of a system for implementing a QoS negotiation mechanism in a roaming scenario in the prior art.
  • the system includes: MS11, RAN12, AGW13, VPCRF41, HPCRF42, and AF15.
  • the VPCRF41 is basically the same as the PCRF14 in FIG. 1, but only FIG.
  • the signaling interaction unit 411 in the VPCRF 41 is connected to the signaling interaction unit 151 in the AF 15 through the signaling interaction unit 421 in the HPCRP 42; the MS11, RAN12, AGW13, and AF15 are basically the same as in FIG. 1, except that in FIG.
  • the signaling interaction unit 131 is connected to the signaling interaction unit 411 in the VPCRJF41, and the signaling interaction unit 151 in the AF15 is connected to the signaling interaction unit 411 in the VPCRF 41 through the signaling interaction unit 421 in the HPCRF 42.
  • the HPCRF 42 includes: Signaling interaction unit 421.
  • the signaling interaction unit 421 in the HPCRF 42 receives the QoS information of the application layer authorization sent by the signaling interaction unit 151 in the AF 15 and forwards the QoS information to the signaling interaction unit 411 in the VPCRF 41.
  • the signaling interaction unit 411 in the VPCRF 41 can also be sent.
  • the QoS authorization request may also send QoS information requesting application layer authorization to the signaling interaction unit 151 in the AF 15.
  • FIG. 5 is a schematic diagram of an implementation process of a QoS negotiation mechanism when an access network initiates a QoS authorization request in a roaming scenario in the prior art, and the process includes the following steps:
  • Steps 501 to 502 substantially the same as step 201 to step 202, except that the AGW in step 501, step 502 is located in the visited network, and the AGW in step 201 and step 202 is located in the home network.
  • Step 503 The AGW sends a QoS authorization request to the VPCRP.
  • the step 503 is specifically: the AGW accepts the resource reservation request requested by the MS, but considers that the resource requested by the MS needs to be authorized and approved by the network policy ruling entity, so the QoS authorization request is sent to connect with itself.
  • the VPCRF and requests the VPCRF to QoS authorization corresponding to the need to reserve resources.
  • Step 504 The VPCRF forwards the QoS authorization request to the HPCRF.
  • the VPCRF determines the network to which the MS belongs according to the identifier of the MS in the QoS authorization request forwarded by the AGW, and finds an HPCRF, and receives it from the AGW.
  • the QoS authorization request is forwarded to the HPCRP.
  • Step 505 The HPCRF requests the QoS information of the application layer authorization from the AF.
  • the step 505 is specifically: after receiving the QoS authorization request from the VPCRF, the HPCRF authorizes the application layer of the AF application that provides the service service according to the information in the QoS authorization request.
  • Step 506 The AF sends the QoS information of the application layer authorization to the HPCRF.
  • the AF finds the information about the current service of the user in the application layer according to the user information carried in the QoS authorization application request of the HPCRF and the information content of the current service session, and the QoS of the application layer for the current service authorization. Information, and return the QoS information of the application layer authorization to the HPCR.
  • step 506 may be performed after step 505 as shown in FIG. 5, or may be performed at any position between step 501 and step 504. Step 506 is performed between step 501 and step 504. Step 505 may not be performed in FIG. 5, and the step 506 is specifically: the AF sends the QoS information authorized by the application layer to the HPCRF for local policy ruling, and includes The information of the visited network VPCRF where the current user is located is determined.
  • Step 507 The HPCRF forwards the QoS information of the application layer authorization to the VPCR.
  • Step 508 The VPCRF determines that the QoS information authorized by the application layer is decided by the local policy. Specifically, after receiving the QoS information of the service application layer authorization forwarded by the HPCRF, the VPCRF condenses the local policy of the visited network to perform local policy ruling on the QoS information. If the QoS information authorized by the application layer for the current service is within the QoS range allowed by the local policy, the VPCRF considers that the service can use the local network resource according to the QoS information authorized by the application layer, otherwise the VPCR determines that the QoS negotiation fails. And end this process.
  • the VPCRF determines that the QoS negotiation fails.
  • the VPCRF sends a QoS negotiation failure message to the AF through the HPCRF.
  • the AF sends a QoS negotiation failure message to the MS through the AGW.
  • Step 509 The VPRF sends the authorized QoS information to the AGW.
  • the VPCRF sends the QoS information that is determined by the local policy to the AGW, and instructs the AGW to establish a bearer connection for the current service of the user according to the QoS information.
  • the VPCRF converts the QoS information of the application layer authorization into a form that can be understood by the AGW, and then sends the QoS information to the AGW.
  • Step 510 The AGW determines that the bearer network resource currently available to the user is within the authorized QoS range.
  • the AGW compares the application layer authorization QoS information with the QoS information that the user applies to itself, and if the QoS information requested by the user to itself is within the QoS range authorized by the application layer, The QoS information requested by the user is accepted, and the bearer resource connection is provided for the current service of the user according to the QoS information.
  • the prior art does not provide processing if the QoS information requested by the user exceeds the QoS information authorized by the application layer.
  • the bearer resource is reserved in step 502, and the reserved bearer resource can certainly satisfy the QoS information of the application layer authorization. Therefore, in step 510, the bearer resource reserved by the user after requesting the AGW
  • the corresponding QoS information can only be beyond the scope authorized by the application layer and the local policy or within the scope authorized by the application layer and the local policy.
  • FIG. 5 includes optional steps 511 to 513 for the AGW to return a message confirming the QoS information to the AF.
  • Step 511 to Step 513 The AGW returns an acknowledgement message to the QoS information to the AF through the VPCRF and the HPCRP.
  • Step 514 The AGW notifies the user that the resource link required by the current service of the MS has been established.
  • step 514 may be performed after step 513 as shown in FIG. 5, or may be performed at any position after step 510.
  • the media stream connection between the user's MS and the peer can be successfully established, and the service initiated by the user can be started.
  • FIG. 6 is a schematic diagram of an implementation process of a QoS negotiation mechanism when an application layer initiates a QoS authorization request in a roaming scenario in the prior art, and the process includes the following steps:
  • Step 601 The same as step 501.
  • Step 602 The AF sends the QoS information of the application layer authorization to the HPCRF.
  • step 602 the AF sends the QoS information authorized by the application layer to the HPCRF for local policy ruling, and the AF sends a VPCRF request to the HPCRF to determine the current user's visited network.
  • Step 603 The HPCR sends the QoS information of the application layer authorization to the VPCR.
  • the HPCRF determines an appropriate VPCRF located on the visited network of the user based on the information received from the AF, and forwards the QoS information received from the AF to the
  • Step 604 to step 610 The same as steps 508 to 514.
  • the media stream link between the MS and the peer of the user is successfully established, and the service initiated by the user starts.
  • the QoS negotiation mechanism given in the SBBC stage 2 baseline document is not perfect, and it is not given that if the QoS information authorized by the application layer cannot be determined by the local policy of the PCRF, or is PCRP The QoS information authorized after the ruling cannot be accepted by the AGW. That is, after the QoS information authorized by the PCRF has exceeded the allowable range of resources provided by the AGW, how to perform subsequent processing to ensure that the service request initiated by the user can be executed.
  • An embodiment of the present invention provides a system and method for implementing a QoS negotiation mechanism, and an entity that implements the method: an access gateway AGW, a policy and charging function PCRF unit, and an application layer function AF unit, to improve users.
  • An access gateway AGW an access gateway
  • PCRF unit a policy and charging function PCRF unit
  • an application layer function AF unit an application layer function AF unit
  • An embodiment of the present invention provides a system for implementing a QoS negotiation mechanism, including: an application layer function AF unit, which receives service request information, performs QoS authorization on a service requested by the service request information, and sends an authorized default QoS. Information and authorized degraded QoS information; a resource request processing entity, which receives the authorized default QoS information and authorized degraded QoS information sent by the AF unit, and when the authorized default QoS cannot meet the requirement for establishing a bearer resource, according to the authorization Degraded QoS information establishes bearer resources.
  • the bearer resource request processing entity includes:
  • a policy and charging function PCRF unit which receives the default QoS information of the authorization sent by the AF unit, and requests the AF unit to negotiate the degraded QoS when the authorized default QoS information fails the local policy decision. And transmitting the authorized degraded QoS information after the received degraded QoS information received by the local policy is determined; when the authorized default QoS is determined by the local policy, sending the authorization lacking Provincial QoS information;
  • the access gateway AGW when the currently available bearer network resource does not satisfy the received default QoS information, requests the AF unit to negotiate the degraded QoS information through the PCRF unit; When the bearer network resource satisfies the received degraded QoS of the authorized, the bearer resource is established according to the authorized degraded QoS.
  • the bearer resource request processing entity may further include:
  • a PCRF unit which receives authorized default QoS information and degraded QoS information that are simultaneously sent by the AF unit, and when the authorized default QoS information fails the local policy, and the authorized degraded QoS information Sending the authorized degraded QoS information when the local policy is determined; when the authorized default QoS is determined by the local policy, simultaneously transmitting the authorized default QoS information and the authorized degraded QoS information;
  • An access gateway AGW when the currently available bearer network resource does not satisfy the received default QoS information of the authorization, and the currently available bearer network resource satisfies the received degraded QoS information of the authorization, The bearer resource is established according to the authorized degraded QoS information; when the currently available bearer network resource meets or exceeds the received degraded QoS of the authorization, the bearer resource is established according to the authorized degraded QoS.
  • Another aspect of an embodiment of the present invention provides a method for implementing a QoS negotiation mechanism, including: Receiving a service request of the I] user, performing QoS authorization on the service requested by the service request, obtaining authorized default QoS information and authorized degraded QoS information;
  • the bearer resource is established according to the authorized degraded QoS when the default QoS information of the authorization does not meet the requirement for establishing the bearer resource, and the degraded QoS information of the authorization meets the requirement of establishing the bearer resource.
  • Another aspect of an embodiment of the present invention provides an access gateway AGW, a policy and charging function PCRF unit, and an application layer function AF unit that implement the above method.
  • the embodiment of the present invention performs QoS between the network entities such as the AF unit, the PCRF unit, and the AGW under the premise that the user is allowed to perform the degraded processing on the requested service, and the network resource can meet the demand for the resource after the degraded service.
  • negotiation, degrading the user's service request, and introducing a renegotiation mechanism can enable the requested service to be established within the quality range acceptable to both the user and the network.
  • the embodiment of the present invention solves the problem that the currently available bearer network resources of the user cannot meet the resource requirements of the service requested by the user; the QoS authorized by the application layer fails to provide the user due to resource allocation reasons.
  • Local policy ruling of the service network when the user's home network and the visited network providing the user's access service have inconsistent resource requirements for the service initiated by the user, and the user's requested service cannot be accepted by the visited network, etc.
  • the problem that directly causes the user's service to fail can improve the possibility that the service requested by the user can be established within the quality range acceptable to the user and the network, thereby improving the success rate of the user service establishment.
  • the embodiment of the present invention can fully utilize the current bearer resources to meet the user's needs for services within the QoS reduction range acceptable to the user and the network.
  • FIG. 1 is a schematic diagram of a system for implementing a QoS negotiation mechanism in a non-roaming scenario in the prior art
  • FIG. 2 is a schematic diagram of an implementation process of a QoS negotiation mechanism when a QoS authorization request is initiated by an access network in a non-roaming scenario in a prior art
  • FIG. 3 is a schematic diagram of an implementation process of a QoS negotiation mechanism when an application layer initiates a QoS authorization request in a non-roaming scenario in the prior art
  • FIG. 4 is a schematic diagram of a system for implementing a QoS negotiation mechanism in a roaming scenario in the prior art
  • FIG. 5 is a schematic diagram of an implementation process of a QoS negotiation mechanism when an access network initiates a QoS authorization request in a roaming scenario in the prior art
  • FIG. 6 is a schematic diagram of an implementation process of a QoS negotiation mechanism when an application layer initiates a QoS authorization request in a roaming scenario in the prior art
  • FIG. 7 is a schematic diagram of a system for implementing a QoS negotiation mechanism in a non-roaming scenario according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of an implementation process of a QoS negotiation mechanism when a QoS authorization request is initiated by an access network in a non-roaming scenario according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of a first implementation process of a QoS negotiation mechanism when an application layer initiates a QoS authorization request in a non-roaming scenario according to an embodiment of the present invention
  • FIG. 10 is a schematic diagram of a second implementation process of a QoS negotiation mechanism when an application layer initiates a QoS authorization request in a non-roaming scenario according to an embodiment of the present invention
  • FIG. 11 is a schematic diagram of a system for implementing a QoS negotiation mechanism in a roaming scenario according to an embodiment of the present invention
  • FIG. 12 is a schematic diagram of an implementation process of a QoS negotiation mechanism when an access network initiates a QoS authorization request in a roaming scenario according to an embodiment of the present invention
  • FIG. 13 is a schematic diagram of an implementation process of a QoS negotiation mechanism when an application layer initiates a QoS authorization request in a roaming scenario according to an embodiment of the present invention. Mode for carrying out the invention
  • the following method is adopted: receiving a service request from a user, And performing QoS authorization on the service requested by the service request, obtaining authorized default QoS information and authorized degraded QoS information; the default QoS information of the authorization does not meet the requirement for establishing a bearer resource, and the authorized When the degraded QoS information meets the need to establish a bearer resource, the bearer resource is established according to the authorized degraded QoS.
  • the need to establish a bearer resource is determined by the local policy of the PCRF in the network side, and the AGW determines that the bearer network resource can be satisfied.
  • the system for implementing the QoS negotiation mechanism in the embodiment of the present invention includes: a radio access network RAN; an application layer function AF unit, receives service request information, performs QoS authorization on the service requested by the service request information, and sends a default QoS for authorization. Information and authorized degraded QoS information; a bearer resource request processing entity receives the authorized default QoS information and authorized degraded QoS information sent by the AF unit, and the default QoS of the authorization cannot satisfy the establishment of the bearer resource. If necessary, the bearer resource is established according to the authorized degraded QoS information; the mobile station MS sends the service request information to the AF unit by using the RAN and the bearer resource request processing entity.
  • the PCR unit and the AGW unit form an embodiment of the bearer resource request processing entity.
  • the QoS information appearing in the technical solution of the QoS negotiation mechanism in the embodiment of the present invention is divided into default QoS information and degraded QoS information.
  • the difference between the two is:
  • the default QoS information refers to: When the network resources are sufficient, and the local policy ruling has no limitation on the QoS, the application layer default QoS requirement for the service is the preferred QoS requirement of the application layer.
  • the degraded QoS information refers to performance that is lower than the default QoS parameter that the application layer can accept if the network resource is insufficient, or the local policy ruling has restrictions on the QoS, and the application layer default QoS requirement cannot be met.
  • the QoS requirements of the indicator are the QoS requirements of the application hierarchy.
  • the network resources include: a bearer resource, a signaling transport layer resource, and a processing capability of each entity such as a transport layer and a signaling processing layer in the network.
  • the bearer resource refers to the transport layer Resources.
  • One method is to apply for the AGW to reserve the bearer resources required for the current service, and the AGW requests the PCRF and the AF in the network to authorize the resources reserved by the user.
  • the AGW allocates resources according to the QoS information approved by the user according to the current resource status of the user, so as to ensure that the service initiated by the user obtains sufficient bearer resources.
  • Another method is to send, by the AF, the QoS resources required by the user initiated by the application layer to the PCR for policy decision, and inform the AGW of the QoS result that is determined by the PCR, and the AGW is available according to the current user.
  • the resource status is allocated according to the QoS information to ensure that the service initiated by the user obtains sufficient bearer resources.
  • the AGW can use the existing technology to know the current resource status of the user, for example: determining the resources that the user can use in the bearer network according to the current bearer network resource status and user information, and the preset resource allocation policy in the AGW. Situation, etc.
  • the present invention can fully utilize the current bearer network resources to meet the user's needs for services within the QoS reduction range acceptable to the user and the network.
  • the degraded QoS information may be stored as a subscription data in a user service subscription database such as a Home Subscriber Server (HSS), an Authentication Authorization Accounting (AAA), or a service application layer, for example,
  • a user service subscription database such as a Home Subscriber Server (HSS), an Authentication Authorization Accounting (AAA), or a service application layer, for example,
  • HSS Home Subscriber Server
  • AAA Authentication Authorization Accounting
  • service application layer for example, the AF in the present invention obtains the degraded QoS information by accessing these databases or the service application layer.
  • the degraded QoS information in the embodiment of the present invention may also be determined according to the operator policy. Generally, the operator configures the degraded QoS information in the AF in advance, and determines that the degraded service can be provided to all users. The setting of quality QoS information is the same.
  • the QoS degradation information in the embodiment of the present invention may be expressed in various manners, such as a value range mode, a list mode, or a percentage mode, as shown in Table 1.
  • FIG. 7 is a schematic diagram of a system for implementing a QoS negotiation mechanism in a non-roaming scenario according to an embodiment of the present invention.
  • the system includes: MS11, RAN12, AGW7U, PCRF72, AF73, where the AGW 72 includes: a signaling interaction unit 711, a default QoS processing unit 712, The bearer network resource management unit 713, the degraded QoS processing unit 714, the PCRF72 includes: a signaling interaction unit 721, a default QoS processing unit 722, a local policy unit 723, a degraded QoS processing unit 724, and the AF73 includes: a signaling interaction unit 731
  • the QoS translation unit 732, the default QoS processing unit 733, and the degraded QoS processing unit 734, the AF 73 may further include: a subscription information unit 735.
  • the communication unit 731 interacts with the application layer information, and also establishes resource information by interacting with the signaling interaction unit 711 in the AGW 71 by the RAN 12.
  • the RAN 12 is configured to transmit information between the MS11 and the signaling interaction unit 711 in the AGW 71, and establish a radio link bearer connection for the user.
  • the signaling interaction unit 711 in the AGW 71 the resource information is established by the RAN 12 interacting with the MS 11, and the application layer information that the MS 11 exchanges between the RAN 12 and the signaling interaction unit 731 in the AF 73 is transmitted; the signaling interaction unit 721 in the receiving PCRP 72 sends the information.
  • the default QoS information of the application layer authorization is forwarded to the default QoS processing unit 712, the information that the default QoS processing unit 712 sends the default QoS that the bearer network resource meets or does not exceed or exceeds the application layer authorization is received; the PCRF 72 is received.
  • the signaling interaction unit 711 in the AGW 71 may also receive information about whether the bearer network resource sent by the down-conversion QoS processing unit 714 meets or exceeds the degraded QoS authorized by the application layer; and may also request the signaling inter-unit 721 in the PCRF 72.
  • the degradation QoS information may also be sent to the signaling interaction unit 721 in the PCRF 72 to transmit information that the network resource does not satisfy the default QoS of the application layer authorization.
  • the default QoS processing unit 712 in the AGW 71 receives the default QoS information authorized by the application layer sent by the signaling interaction unit 711, and then forwards it to the bearer network resource management unit 3 713 to receive the bearer network sent by the bearer network resource management unit 713.
  • the resource meets or exceeds or exceeds the default QoS information of the application layer authorization.
  • the default QoS state information indicates that the bearer network resource meets or exceeds the default QoS information, the bearer resource is established according to the default QoS information, otherwise the device will be configured.
  • the default QoS state information is forwarded to the signaling interaction unit 711.
  • the default QoS status information that the bearer network resource meets or exceeds the default QoS information is indicated, that is, the bearer network resource management unit 713 sends an indication of the bearer resource according to the default QoS information.
  • the bearer network resource management unit 713 in the AGW 71 receives the default QoS information of the application layer authorization sent by the default QoS processing unit 712, and determines whether the bearer network resource meets or exceeds the default QoS authorized by the application layer.
  • QoS processing unit 712 returns the bearer network resource full Information that exceeds or exceeds the default QoS of the application layer authorization; when the bearer network resource does not meet the default QoS of the application layer authorization, the default QoS is not sent to the degraded QoS processing unit 714.
  • Determining the QoS information of the QoS information receiving the degraded QoS information of the application layer authorization sent by the degraded QoS processing unit 714, and determining whether the bearer network resource meets or exceeds the degraded QoS of the application layer authorization, and performs the degraded QoS processing.
  • Unit 714 returns information indicating whether the bearer network resource meets or exceeds the degraded QoS authorized by the application layer.
  • the degraded QoS processing unit 714 in the AGW 71 receives the degraded QoS information of the application layer authorization sent by the signaling interaction unit 711, and receives the default QoS information that the bearer network resource sent by the bearer network resource management unit 713 does not satisfy the application layer authorization.
  • the default QoS status information is sent, the degraded QoS information of the application layer authorization is sent to the bearer network resource management unit 713; the degraded QoS status information sent by the bearer network source management unit 713 is received, and the degraded QoS status information is sent.
  • the bearer resource When the bearer network resource meets or exceeds the degraded QoS information, the bearer resource is established according to the degraded QoS information, and the degraded QoS state information is forwarded to the signaling interaction unit 711. It may also request degraded QoS information from the PCRF unit through the signaling interaction unit 711.
  • the QoS status information indicating that the bearer network resource meets or exceeds the degraded QoS information that is, the indication that the bearer network resource management unit 713 sends the bearer resource according to the degraded QoS information.
  • the AGW 71 determines whether the bearer network resource exceeds the default QoS authorized by the application layer, if it is an application. If the layer initiates QoS negotiation, the AGW 71 determines whether the bearer network resource meets the default QoS of the application layer authorization; whether the bearer network resource meets or exceeds the degradation QoS of the application layer authorization, if the access network initiates In the QoS negotiation, the AGW 71 determines whether the bearer network resource exceeds the degraded QoS authorized by the application layer. If the application layer initiates the QoS negotiation, the AGW 71 determines whether the bearer network resource meets the degraded QoS of the application layer authorization.
  • the signaling interaction unit 721 in the PCRF 72 sends the signaling interaction unit 731 in the receiving AF 73.
  • the default QoS information of the application layer authorization, the default QoS information of the application layer authorization is sent to the default QoS processing unit 722, and the information of the application layer authorization default QoS returned by the default QoS processing unit 722 is determined by the local policy.
  • the signaling interaction unit 711 in the AGW sends the application layer authorization default QoS information; after receiving the degraded QoS information of the application layer authorization sent by the signaling interaction unit 731 in the AF 73, the information is forwarded to the degraded QoS processing unit 724;
  • the application layer authorization degradation QoS sent by the QoS processing unit 724 sends the application layer authorization degradation QoS information to the signaling interaction unit 711 in the AGW through the information of the local policy ruling.
  • the signaling interaction unit 721 in the PCRF 72 may further receive the QoS authorization request sent by the signaling interaction unit 711 in the AGW, and may also send the information of the default QoS requesting the application layer authorization to the signaling interaction unit 731 in the AF 73;
  • the information requesting the negotiated degraded QoS may be sent to the signaling interaction unit 731 in the AF 73 when the degraded QoS status information indicates that the local policy decision has not been made.
  • the default QoS processing unit 722 in the PCRF 72 receives the application layer authorization default QoS information sent by the signaling interaction unit 721, and then forwards it to the local policy unit 723, and receives the application layer authorization default QoS sent by the local policy unit 723 through the local policy. After the ruling information is forwarded to the signaling interaction unit 721.
  • the information of the application layer authorization default QoS sent by the local policy unit 723 is determined by the local policy, that is, the indication of the default Qos information of the issued authorization sent by the local policy unit 723.
  • the local policy unit 723 in the PCRF 72 receives the application layer authorization default QoS information sent by the default QoS processing unit 722, and determines whether the application layer authorization default QoS is determined by the local policy, and returns the application layer to the default QoS processing unit 722.
  • Authorizing the default QoS to pass the information of the local policy that is, the indication of the default QoS information of the issued authorization; sending the information of the application layer authorization default QoS to the degraded QoS processing unit 724 that has not passed the local policy, and receiving the degraded QoS processing.
  • the degraded QoS information of the application layer authorization sent by the unit 724 determines whether the application layer authorization degradation QoS determines whether the application layer authorization degradation QoS passes the local policy ruling to the degraded QoS processing unit 724.
  • the information of whether the application layer authorizes the degraded QoS to pass the local policy is the local policy list.
  • the local policy unit 723 may include a local policy database, and may also obtain a local policy interface, and obtain a local policy by using the interface to exchange database information of the local policy with the PCRP72 externally.
  • the Shield QoS processing unit 724 in the PCRF 72 receives the Shield QoS information of the application layer authorization sent by the signaling interaction unit 721, and receives the information that the application layer authorization default QoS sent by the local policy unit 723 fails to pass the local policy, and is localized.
  • the policy unit 723 sends the degraded QoS information. After receiving the information that the application layer authorization degraded QoS sent by the local policy unit 723 passes the local policy, the application layer authorization LSP QoS is determined by the local policy, and the application layer authorization is degraded. The QoS is given to the signaling interaction unit 721.
  • the application layer authorization degradation QoS described here passes the local policy ruling, which is an indication of the degraded QoS information of the issued authorization.
  • the degraded QoS processing unit 724 in the PCRF 72 may further send a message for querying the user degraded QoS information to the subscription information unit 725, and receive the degraded QoS information returned by the subscription information unit 725; and may also send the query user to the subscription information unit 725. Whether the information of the degraded QoS is signed or not, and whether the user returned by the receiving contract information unit 725 has signed the information of the degraded QoS.
  • the subscription information unit 725 in the PCRF 72 is an escaping unit, and is configured to receive the message sent by the degraded QoS processing unit 724 to query whether the user has subscribed to the degraded QoS, and then return to the degraded QoS processing unit 724 whether the user has signed the degraded QoS. After receiving the message for querying the user degraded QoS information sent by the degraded QoS processing unit 724, the degraded QoS information of the user is returned to the fallback QoS processing unit 724.
  • the subscription information unit 725 may be a subscription information database for storing user subscription information, or an interface for acquiring user subscription information, and extracting users through interaction information such as HSS, or AAA, or AS storing the user subscription information through the interface. Whether to sign the degradation QoS information.
  • the signaling interaction unit 731 in the AF 73 the application layer information is exchanged with the MS 11 through the signaling interaction unit 711 and the RAN 12 in the AGW 71; the application layer information sent by the MS 11 is sent to the QoS translation unit 732, and the default QoS processing unit 733 is sent. Default QoS letter for application layer authorization ⁇ Then, it is forwarded to the signaling interaction unit 721 in the PCRF 72; after receiving the degraded QoS information of the application layer authorization sent by the degraded Qo processing unit 734, it is forwarded to the signaling interaction unit 721 in the PCRF 72.
  • the signaling interaction unit 731 in the AF 73 may also receive the default QoS information of the application layer authorization that is sent by the signaling interaction unit 721 in the PCRF 72, and may also receive the request negotiation degradation sent by the signaling interaction unit 721 in the PCR 72.
  • the subscription information unit 735 may also be sent to query whether the user has signed the degraded QoS information, and may also receive whether the user returned by the subscription information unit 735 has signed the degraded QoS.
  • the information may also send information to the QoS translation unit 732 that the user has reduced the QoS.
  • the QoS translation unit 732 in the AF 73 receives the application layer information sent by the MS11 sent by the signaling interaction unit 731, translates the default QoS information, and sends default QoS information to the default QoS processing unit 733.
  • the QoS translation unit 732 in the AF 73 may also receive the information that the user sent by the signaling interaction unit 731 has signed the degraded QoS, and translates the degraded QoS information according to the application layer information sent by the MS11 sent by the signaling interaction unit 731. Degraded QoS information is sent to the degraded QoS processing unit 734.
  • the default QoS processing unit 733 in the AF 73 receives the default QoS information sent by the QoS translation unit 732, authorizes the default QoS information, and sends the default QoS information of the application layer authorization to the signaling interaction unit 731. Performing 4 authorization on the default QoS information, that is, describing the media type in the service request initiated by the user, and mapping the default QoS parameter mapping rule to the corresponding default QoS parameter value expression form, and The process of authorizing the default QoS information of the service initiated by the user according to the user subscription information saved in the network.
  • the degraded QoS processing unit 734 in the AF 73 is configured to authorize the degraded QoS information, and send the degraded QoS information of the application layer authorization to the signaling interaction unit 731.
  • the degraded QoS processing unit 734 in the AF 73 may also receive the degraded QoS information sent by the QoS translation unit 732; or may receive the request to negotiate the degraded QoS sent by the signaling interaction unit 721 in the PCRF 72 forwarded by the signaling interaction unit 731.
  • the message for querying the user's degraded QoS subscription information is sent to the subscription information unit 735, and the user degraded QoS subscription information returned by the subscription information unit 735 is received.
  • the degraded QoS information is authorized, that is, the description of the media type in the user-confirmed degradation information stored in the network is translated into the expression form of the corresponding degraded QoS parameter value according to the degraded QoS parameter mapping rule mapping.
  • the subscription information unit 735 in the AF 73 is an optional single, and may receive the message for querying the user degraded QoS subscription information sent by the down-conversion QoS processing unit 734, and return the subscription information of the user degraded QoS to the degraded QoS processing unit 734; Receiving, by the receiving signaling interaction unit 731, whether the user subscribes to the information of the degraded QoS, and returns to the signaling interaction unit 731 whether the user has signed the information B of the degraded QoS.
  • the subscription information sheet 735 may be a subscription information database for storing user subscription information, or may be obtained by acquiring an agreement information interface, and obtaining an exchange information such as an HSS, or an AAA, or an AS that stores user subscription information through the interface. User degradation QoS subscription information.
  • the information that bears whether the network resource meets or exceeds the QoS belongs to the QoS state information; whether the information that the QoS is determined by the local policy also belongs to the QoS state information.
  • the QoS state information is divided into a default QoS.
  • FIG. 8 is a schematic diagram of an implementation process of a QoS negotiation mechanism when a QoS authorization request is initiated by an access network and a default QoS of an application layer authorization is not determined by a local policy in a non-roaming scenario of the user, where the process includes the following steps:
  • Step 801 to step 802 The application layer information exchange is performed between the MS and the AF.
  • the MS requests the AGW to reserve the bearer resource.
  • the steps 801 to 802 are specifically the same as steps 2 (H to step 202).
  • Step 803 The AGW sends a QoS authorization request to the PCRF.
  • the step 803 is specifically the same as step 203.
  • Step 804 The PCRF requests the QoS information of the application layer authorization from the AF.
  • the step 804 is specifically the same as step 204.
  • Step 805 The AF sends the default QoS information of the application layer authorization to the PCRF.
  • the step 805 is specifically as follows: The AF finds the information about the user's current service in the application layer according to the user information carried in the QoS authorization request of the PCRP and the information content of the current service session, and the application layer to the current service. Authorized default QoS information, and return the default QoS information of the application layer authorization to the PCRF.
  • step 805 may be performed after step 804 as shown in FIG. 8, or may be performed at any position between step 801 and step 803.
  • Step 805 is performed between step 801 and step 803.
  • Step 804 may not be performed in FIG. 8, and the step 805 is specifically as follows:
  • the AF sends the default QoS information authorized by the application layer to the PCRF for local policy arbitration.
  • step 805 when the AF sends the QoS information of the application layer authorization to the PCRF, the AF QoS information of the current service allowed by the AF may also be simultaneously sent.
  • the degraded QoS information is used to indicate the PCRP. If the default QoS information authorized by the AF cannot be determined by the policy of the PCRF, or the local bearer network resource does not meet the resource requirements of the authorized default QoS information, the Degraded QoS information is used to reduce the shield. If the default QoS information authorized by the AF can be determined by the policy of the PCRF, the PCRF unit sends default QoS information to the AGW, and the AGW establishes bearer resources according to the default QoS information, and ends the processing flow.
  • the expression of the degraded QoS information can be as shown in Table 1.
  • the AF may obtain the degraded QoS information through the HSS, or AAA, or AS interaction information that stores the degraded QoS subscription data of the user.
  • the AF may also determine the degraded QoS information according to the operation strategy. Usually, the operator configures the degraded QoS information in advance in the AF.
  • Step 806 The PCR determines that the default QoS information for the application layer authorization fails to pass the local policy decision.
  • the step 806 is specifically as follows: The PCR receives the default of the service application layer authorization sent by the AF. After the QoS information, the converged local policy performs local policy ruling on the default QoS information. If the default QoS information authorized by the application layer for the current service exceeds the QoS range allowed by the local policy, the PCRF considers that the service cannot use the local network resource according to the default QoS information authorized by the application layer.
  • step 805 If the step 805 already carries the reduced Qo message of the service allowed by the application layer, the PCR performs degradation processing according to the degraded QoS information, that is, the local policy is determined according to the degraded QoS information. If the degraded QoS information meets the requirements of the local policy, the PCRF considers that the service can be established according to the requirements of the degraded QoS information. After performing this step, step 809 is performed, if the degraded QoS information does not comply with the local policy. The request determines that the QoS negotiation fails and the process ends.
  • step 807 is performed. If the QoS information of the current service allowed by the application layer is not carried in the step 805, after the step, step 807 is performed. If the QoS information of the current service allowed by the application layer is not carried in the step 805, the step 807 may be performed after the step 807, the method further includes: the PCRP local policy or the subscription information of the user, and the service is determined to be the current service. The QoS information is subjected to a degrading process. In the step: after the PCRP knows that the default QoS information fails to pass the local policy, the QoS information of the current service can be determined according to the local policy or the subscription information of the user. Quality treatment.
  • the PCRF may be the degraded QoS information that is subscribed by the user through the interaction information of the AF and the HSS, or the AAA, or the AS.
  • Step 807 The PCRF requests the AF to negotiate the degraded QoS information.
  • the step 807 is specifically as follows:
  • the PCRF requests the AF to re-negotiate the QoS information of the current service, that is, to apply for the degraded QoS information authorized by the application layer to the AF.
  • Step 808 The AF sends the degraded QoS information of the application layer authorization to the PCRF.
  • the step 80S is the response message of step 807. Specifically, after receiving the QoS renegotiation request from the PCRF, the AF returns the degraded QoS information allowed by the application layer to the PCRF.
  • the degraded QoS information sent by the AF to the PCRF may be all the down-conversion QoS information as shown in Table 1 that is subscribed by the user or allowed by the operator, or may be the contract information of the AF root user and
  • the application layer selects the appropriate degraded QoS information for the minimum QoS restrictions required for this service.
  • the AF can generally determine the minimum QoS limit required by the application layer for the current service according to the information such as the service attribute, and the different methods for the AF to select the appropriate degraded QQS' information do not affect the implementation of the solution of the present invention.
  • Step 809 The PCRF sends the authorized Shield QoS information to the AGW.
  • the step 809 is specifically: the PCRF determines that the received degraded QoS information is determined by the local policy, and sends the degraded QoS information that is determined by the local policy to the AGW, and instructs the AGW to use the degraded QoS information as the user.
  • the service establishes a bearer connection.
  • the PCRF sends the degraded QoS information that is determined by the local policy to the AGW, all the downgrade QoS information as shown in Table 1 that is subscribed by the user or allowed by the operator may be simultaneously sent to the AGW.
  • the PCRF converts the reduced QoS information authorized by the application layer into a form that the AGW can understand and sends it to the AGW.
  • the PCRP processes the failure and ends the processing flow.
  • Step 810 The AGW determines that the bearer network resource currently available to the user is within the granted degraded QoS range.
  • the step 810 is specifically: after receiving the degraded QoS information from the PCRF, the AGW compares the degraded QoS information of the application layer with the QoS information applied by the user to the application, if the QoS information requested by the user is at the application layer. Within the scope of the authorized degraded QoS information, the QoS information requested by the user is accepted, and the bearer resource connection is provided for the current service of the user according to the degraded QoS information. If the scope of the QoS requested by the user exceeds the scope of the degraded QoS authorized by the application layer, the AGW determines that the excess reserved resource needs to be released, and provides the current service of the user according to the degraded QoS information authorized by the application layer. Host resource connections.
  • FIG. 8 includes optional steps 811 to 812 for the AGW to return a message confirming the Shield QoS to the AF.
  • Step 811 The AGW returns an acknowledgement message to the PCRF for the Shield QoS information.
  • Step 812 The PCR sends a message confirming the degraded QoS to the AF.
  • the PCR after receiving the acknowledgement message for the degraded QoS from the AGW, the PCR notifies the AF of the received degraded QoS information.
  • Step 813 The AGW notifies the user that the resource link required by the current service of the MS has been established.
  • step 813 may be performed after step 812 as shown in FIG. 8, or may be performed at any position after step 810.
  • the media stream link between the user's MS and the peer end can be established, and the service initiated by the user can be started.
  • the PCRF determines that the application layer authorization default QoS information is determined by the local policy in step 806, the PCRF sends the default QoS information of the application layer 4 right to the AGW.
  • steps 1006 to 1010 in FIG. 10 The bearer network resources available to the user can satisfy the default QoS information, and the AGW returns a message confirming the default QoS to the PCRF, and establishes a resource link according to the default QoS information.
  • FIG. 9 is a schematic diagram of an implementation process of the QoS negotiation mechanism when the application layer initiates a QoS authorization request and the application layer authorizes the QoS information to fail the local policy in the non-roaming scenario of the user, and the process includes the following steps:
  • Step 901 The same as step 801.
  • Step 902 The AF sends the default Qo ⁇ information authorized by the application layer.
  • step 902 the AF sends the default QoS information authorized by the application layer to the PCRF for local policy ruling.
  • the AF sends the QoS information of the application layer authorization to the PCRF, it is used to indicate the PCRF, if the default QoS information authorized by the AF cannot be determined by the policy of the PCRF, or the local bearer network resource does not satisfy the authorized default QoS.
  • the shield is processed.
  • the sub-parameter 5 f of the reduced QeS information is as shown in Table 2. The process by which the AF obtains the degraded QoS information is the same as described in step 805.
  • Step 907 The AGW determines that the bearer network resource currently available to the user satisfies the authorized degraded QoS information.
  • the step 907 is specifically as follows: After receiving the falling QoS information from the PCRF, the AGW determines whether the current bearer network resource condition available to the user can meet the requirement of the degraded QoS for the resource. If the current user available bearer network resources to meet the QoS degradation, then in accordance with the lower quality QoS bearer resource information to provide connection for users of this service is determined to be 5 or AGW QoS negotiation failed, and the process flow ends.
  • the AGW compares the reduced QoS information with the QoS information requested by the user in step 907;
  • the PCRF sends all the degraded QoS information allowed by the application layer to the AGW, and the degraded QoS information may be a set of degraded QoS as described in Table 1, for example; includes multiple QoS, and has priority A set of degraded QoS, therefore, in step 907, when the bearer network resource available to the user cannot meet the degraded QoS requirement determined by the local policy, the AGW can select the priority according to the priority in the remaining degraded QoS.
  • a degraded QoS to determine whether the current bearer network resource available to the user satisfies the requirement of the degraded QoS for the resource 9
  • Steps 908 to 910 The same as steps 811 to 813.
  • Step 908, step 909 is an optional step ⁇
  • the media stream link between the MS and the peer end of the user can be successfully established, and the service initiated by the user can be started.
  • the PCR determines that the application layer authorization default QoS information is determined by the local policy, and the PCRP sends the default QoS information of the application layer authorization to the AGW.
  • the AGW requests the AF to negotiate the degraded QoS, and then determines whether the current bearer network resource available to the user meets the Shield QoS. If not, the negotiation fails. If the negotiation fails, if the The resource link is established according to the degraded QoS information. For details, refer to step 1005 1014 in FIG.
  • the AGW if it is determined in step 810 that the bearer network resource currently available to the user can satisfy the default QoS, the AGW returns a confirmation default to the PCRP.
  • the QoS message establishes a resource link according to the default QoS information.
  • FIG. 10 is a schematic diagram of an implementation process of a QoS negotiation mechanism when an application layer initiates a QoS authorization request in a non-roaming scenario of a user, and the current network resource cannot meet the QoS requirement, and the process includes the following steps:
  • Steps 1001 to 1002 The same as steps 901 to 902.
  • Step 1003 The PCRF determines that the default QoS information of the application layer authorization is determined by the local policy.
  • the step 1003 is specifically: after the PCRF receives the default QoS information authorized by the service application layer sent by the AF, the merging local policy determines the local QoS of the default QoS information. If the default QoS authorized by the application layer for the current service is within the QoS range allowed by the local policy, the PCRF considers that the service can use the local network resource according to the default QoS information authorized by the application layer.
  • the PCRF may save the degraded QoS information for subsequent processing.
  • Step 1004 The PCR sends the default QoS information of the application layer authorization determined by the local policy to the AGW.
  • the PCRF receives the reduced QoS information allowed by the application layer from the AF, the degraded QoS information may be sent to the AGW together in step 1004.
  • Step 1005 The AGW determines that the bearer network resource currently available to the user cannot satisfy the authorized default QoS information.
  • the step 1005 is specifically: after receiving the default QoS information of the application layer authorized by the local policy, the AGW determines whether the current bearer network resource available to the user is The resource requirements of the default Qog information for this authorization can be met. If the current available QoS requirements of the user cannot meet the authorized default QoS requirements, if the AGW fails to obtain the degraded QoS information allowed by the application layer from the PCR in step 1004, after this step, step 1006 is performed; If, in step 1004, the AGW obtains the degraded QoS information allowed by the application from the PCRF, and the current bearer network resource available to the user can meet the requirements of the QoS for the down QoS, step 1011 is directly performed after this step.
  • the degraded QoS information may be a set of degraded QoS as described in Table 1, for example: including multiple QoS> and having priority A set of degraded QoS, therefore, when the bearer network resource currently available to the user in step 1005 cannot satisfy the authorized default QoS requirement, the AGW may select one of the degraded QoS according to the priority in the degraded QoS. A determination is made as to whether the current bearer network resource available to the user satisfies the requirement of the degraded QoS for the resource.
  • Step 1006 The AGW notifies the PCR that the current available network resources of the user cannot meet the authorized default QoS information.
  • Step 1006 is used by the AGW to indicate to the PCRF that the default QoS information cannot be accepted by the bearer network.
  • Step 1007 The PCRF determines, according to the local policy or the subscription information of the user, that the QoS information of the current service is degraded.
  • step 1007 when the PCRF knows that the default QoS information is not accepted by the AQW, it is determined whether the QoS information of the current service can be degraded according to the local policy or the subscription information of the user.
  • the PCRF can learn the degraded QoS information subscribed by the user through the interaction information of AF and HSS, or AAA, or AS.
  • step 1010 is directly executed after this step. Otherwise, after step 100, step 1008 is performed.
  • Steps 1008 to 1014 The same as steps 904 to 910.
  • step 1012 determines that the application layer authorization default QoS information is determined by the local policy in step 1005 shown in FIG. 10, it is confirmed that the application layer authorizes the default QoS information or directly Step 1014 is executed. At this time, in step 1012 to step 1013, a default QoS message for confirming the authorization is sent.
  • step 1003 shown in FIG. 10 when the PCRF determines that the application layer authorization default QoS information does not pass the local policy ruling, the processing may be performed by referring to the relevant steps in FIG. At this time, if in step 1005, the current bearer network resource available to the user cannot satisfy the degraded QoS information of the authorization, the AGW may further further degrade the QoS information within an acceptable degradation range of the AF and PCRF.
  • the degradation treatment, further subjected to reduction treatment process and the process of the shield to the default QoS information of the degradation process is similar to FIG. 10, not described in detail herein fan 9
  • step 1005 if the AGW determines that the bearer network resource available to the user meets the authorized default QoS information, the application layer is authorized to authorize the default QoS information or directly performs step 1014, and sends a confirmation in steps 1012 to 1013. 4 Authorized default QoS messages.
  • Steps 1006 to 1010 in FIG. 10 can also be applied to FIG. 9, specifically: If, in step 906 shown in FIG. 9, the PCRF only sends the application layer authorization to the AGW and the degraded QoS information determined by the PCRF local policy, The QoS information that is subscribed by the user or allowed by the operator is not sent to the AGW at the same time. If the bearer network resource available to the user does not meet the degraded QoS information determined by the PCR local policy in step 907, the AGW may refer to Steps 1006 to 1010 in Fig. 10 perform further degradation processing.
  • the AGW that provides the access network service for the user is located in the visited network.
  • the PCRF connected to the AGW is also in the visited network, and the PCRF in the visited network is marked as a VPCRF.
  • the PCRF located in the user's home network is called HPCRF.
  • the difference between the QoS negotiation mechanism and the non-roaming scenario in the roaming scenario is that the HPCRF is responsible for forwarding the information between the AF and the VPCRF, and since the VPCR is located in the visited network that provides the bearer connection service for the user, it is more than the HPCRF located in the home network. Understand the resource usage of the access network, so the function including the local policy decision and the like completed by the PCRF in the non-roaming scenario is completed by the VPCRF.
  • FIG. 11 is a schematic diagram of a system for implementing a QoS negotiation mechanism in a roaming scenario according to an embodiment of the present invention, where the system includes: MS11, RAN12, AGW7K VPCRF111, HPCRF112, AF73,
  • the PCRF 72 in FIG. AGW71 and AF73 are basically the same as those in FIG. 7, except that in FIG. 11, the signaling interaction unit 711 in the AGW 71 is connected to the signaling interaction unit U11 in the VPCRP 111, and the signaling interaction unit 731 in the A 73 passes the letter in the HPCRP 112.
  • order interaction unit U21 is connected to the signaling unit 1111 VPCRP111 interaction of P HPCRP112 comprising: signaling interaction unit 1121.
  • the signaling interaction unit 1121 in the HPCRF 112 receives the default QoS information of the application layer authorization sent by the signaling interaction unit 731 in the AF 73, and forwards it to the signaling interaction unit 1111 in the VPCRF 111.
  • the signaling interaction unit in the VPCRF 111 can also be received.
  • the QoS authorization request sent by the 1111 may also send the QoS information requesting the application layer authorization to the signaling interaction unit 731 in the AF 73.
  • the signaling interaction unit 1121 may further receive the degraded QoS information of the application layer authorization sent by the signaling interaction unit 731 in the AF 73, and forward the information to the signaling interaction unit 1111 in the VPCRF 111.
  • the signaling interaction unit 1111 in the VPCRF 111 may also be forwarded.
  • Information about the negotiated degradation QoS is negotiated with the signaling interaction unit 731 in the AF 73.
  • FIG. 12 is a schematic diagram of an implementation process of a QoS negotiation mechanism when an access network initiates a QoS authorization request and the default QoS information of an application layer authorization fails to pass the local policy when the user is in a roaming scenario, and the process includes the following steps. :
  • Step 120 Step 1202: Perform application layer information interaction between the MS and the AF; S requests the AGW to reserve the bearer resource.
  • Steps 1201 to 1202 are specifically the same as steps 501 to 502.
  • Step 1203 The AGW sends a QoS authorization request to the VPCRP.
  • the step 1203 is specifically the same as step 503.
  • Step 1204 The VPCRF forwards the QoS authorization request to the HPCRF.
  • the step 1204 is specifically the same as step 504.
  • Step 1205 The HPCRF requests the QoS information of the application layer authorization from the AF.
  • the step 1203 is specifically the same as step 305.
  • Step 120 The AF sends the default QoS information of the application layer authorization to the HPCRF.
  • the AF finds the information about the user's current service in the application layer according to the user information carried in the QoS authorization request of the HPCR and the information content of the current service session, and the application layer stipulates the authorization for the current service.
  • the QoS information is saved, and the default QoS information of the application layer authorization is returned to the HPCRF.
  • step 1206 may be performed after step 1205 as shown in FIG. 12, or may be performed at any position between step 1201 and step 1204. Step 1206 is performed between step 1201 and step 1204. Step 1205 may not be performed in FIG. 12, and the step 1206 is specifically: the AF sends the default QoS information authorized by the application layer to the HPCRF for local policy ruling, and It includes information for determining the visited network VPCRF where the current user is located.
  • step 1206 when the AF sends the QoS information of the application layer authorization to the HPCRF, the AF may also send the degraded QoS information of the current service allowed by the AF.
  • the degraded QoS information is used to indicate the HPCRF. If the default QoS information authorized by the AF cannot be determined by the local policy, or the local bearer network resource does not meet the requirements of the authorized default QoS for resources, the QoS information is degraded.
  • the expression of the degraded QoS information is as shown in Table 1.
  • step 1206 the process of the AF acquiring the degraded QoS information is the same as that in step 805.
  • Step 1207 The HPCRF forwards the default QoS information of the application layer authorization to the VPCRF.
  • step 1207 if the HPCRF receives the degraded QoS information allowed by the application layer of the AF in step 1206, the HPCRF also sends the degraded QoS information to the VPCRP.
  • Step 1208 The VPCRF determines that the default QoS information for the application layer authorization fails to pass the local policy decision.
  • the VPCRF after receiving the default QoS information of the service application layer authorization forwarded by the HPCRF, the VPCRF performs a local policy ruling on the default QoS information by the local policy of the fused visited network. If the default QoS authorized by the application layer for the current service exceeds the QoS range allowed by the local policy, the VPCRF considers that the service cannot use the local network according to the default QoS information authorized by the application layer. If the degraded QoS information is sent to the VPCRF in step 1207, the VPCRF performs degraded processing according to the downgrade QoS information, that is, performs local policy arbitration according to the degraded QoS information.
  • the VPCRF determines that the service can be established according to the requirements of the degraded QoS information, and after performing this step, step 1213 is performed, if the degraded QoS information does not conform to the local policy.
  • the VPCRF determines that the QoS negotiation fails, and ends the processing flow.
  • step 1209 may further include: the VPCR is determined to be the current service according to the local policy or the subscription information of the user.
  • the step of degrading the QoS information in the step: When the VPCRF knows that the default QoS information is not accepted by the AGW, it is determined whether the QoS information of the current service can be degraded according to the local policy or the subscription information of the user.
  • the VPCRF can learn the degradation information signed by the user through the interaction information between the AF and the HSS, or the AAA, or the AS.
  • Step 1209 The VPCRF requests the HPCRJF to negotiate the QoS of the down-drier.
  • Step 1210 The HPCRF forwards the received renegotiation request to the AF.
  • Steps 1209 to 1210 are used by the VPCRF to request the AF to re-negotiate the QoS information of the service through the HPCRF, that is, to apply for the Shield QoS information authorized by the application layer to the AF.
  • Step 1211 The AF sends the Shield QoS information of the application layer authorization to the HPCRF.
  • the step 1211 is a response message of the step 1210. Specifically, after receiving the QoS re-negotiation request from the HPCRF, the AF returns the degraded QoS information allowed by the application layer to the HPCRF.
  • the degraded QoS information sent by the AF to the HPCR may be all degraded QoS information as shown in Table 1 that is subscribed by the user or allowed by the operator, or may be the subscription information of the AF according to the user and the application layer to the current service.
  • the minimum QoS limit required, the appropriate degraded QoS information is selected.
  • AF can usually determine the most required by the application layer for this service based on information such as service attributes. Low QoS Restriction; AF's selection of a combination of degraded QoS information does not affect the implementation of the inventive solution. '
  • Step 1212 The HPCRF sends the degraded QoS information to the VPCRF.
  • the HPCRF may forward the degraded QoS information received from the AF to the VPCRF.
  • Step 1213 The VPRF sends the authorized degraded QoS information to the AGW.
  • the VPCRF determines that the received degraded QoS information is arbitrated by the local policy, and sends the degraded QoS information that is determined by the local policy to the AGW, instructing the AGW to establish a bearer for the current service of the user according to the degraded QoS information. connection.
  • step 1213 when the VPCRF sends the degraded QoS information that is determined by the local policy to the AGW, all the degraded QoS information as shown in Table 1 that the user subscribes to or the operator allows may be simultaneously sent to the AGW.
  • the VPCRF converts the QoS information authorized by the application layer into a form that the AGW can understand and sends it to the AGW.
  • the VPCRF fails the processing and ends the processing flow.
  • Step 1214 The AGW determines that the bearer network resource currently available to the user is within the scope of the authorized degradation QQS.
  • the AGW compares the application layer authorization degraded QoS information with the QoS information applied by the user to itself, if the QoS requested by the user to the user is degraded at the application layer. Within the QoS range, the QoS information requested by the user is accepted, and the bearer resource connection is provided for the current service of the user according to the degraded QoS information. If the QoS requested by the user exceeds the degraded QoS information authorized by the application layer, the AGW determines that the reserved resource is required to be reserved, and provides the bearer resource for the current service of the user according to the degraded QoS information authorized by the application layer. connection.
  • Figure 12 includes optional steps 1215 through 1217 for the AGW to return a message confirming the degraded QoS to the AF.
  • Step 1215 to Step 1217 The AGW returns a confirmation message for the degraded QoS to the AF through the VPCRF and the HPCRF.
  • Step 1218 The AGW notifies the user that the resource link required by the MS for this service has been established. In actual application, step 1218 may be performed after step 1217 as shown in FIG. 12, or may be performed at any position after step 1214.
  • the media stream connection between the MS and the peer of the user can be successfully established, and the service initiated by the user can be started.
  • the VPCRF determines that the application layer authorizes the default QoS information to be determined by the local policy, and then sends the default QoS information of the application layer authorization to the AGW.
  • step 1214 the user can The obtained bearer network resource can satisfy the default QoS, and the AGW returns a message confirming the default QoS to the VPCRF, and establishes a resource link according to the default QoS information.
  • FIG. 13 is a schematic diagram of an implementation process of the QoS negotiation mechanism when the application layer initiates a QoS authorization request and the default QoS information of the application layer authorization fails to pass the local policy when the user is in the roaming scenario, and the process includes the following steps:
  • Step difficult 1301 Same as step 1201.
  • Step 1302 The AF sends the default QoS information of the application layer authorization to the HPCRF.
  • the AF sends the default QoS information that is authorized by the application layer to the HPCRF for local policy ruling, and the AF sends the VPCRF information for determining the visited network of the current user to the HPCRF.
  • the degraded QoS information allowed by the application layer may also be sent to the HPCRF.
  • the degraded QoS information is used to indicate the HPCRF. If the default QoS information authorized by the AF cannot be determined by the local policy, or the local bearer network resource does not meet the requirements of the authorized default QoS for the resource, the degradation may be performed according to the The QoS information is degraded.
  • the degraded QoS information can be expressed as shown in Table 1. In step U02, the process of obtaining the degraded QoS information by the AF Same as the one in step ⁇ 03.
  • Step 1303 The HPCRF sends the default QoS information of the application layer authorization to the VPCRF.
  • the HPCRF determines an appropriate VPCRF located on the visited network of the user based on the information received from the AF, and forwards the QoS information received from the AF to the VPCRF. Meanwhile, if the HPCR receives the degraded QoS information allowed by the application layer of the AF in step 1302, the HPCRF also sends the degraded QoS information to the VPCRF.
  • Step 1310 The AGW determines that the bearer network resource currently available to the user satisfies the authorized degraded QoS information.
  • the AGW determines whether the current bearer network resource condition available to the user can meet the requirement of the degraded QoS for the resource. If the current bearer network resource available to the user can meet the degraded QoS, the degraded QoS information is used to provide a bearer resource connection for the current service of the user. Otherwise, the AGW determines that the QoS negotiation fails, and the process ends.
  • the AGW only compares the downgrade QoS information with the QoS information applied by the user to itself in step 1310; In 1309, the PCRF sends all the degraded QoS allowed by the application layer to the AGW, because the degraded QoS information may be a set of degraded QoS as described in Table 1, for example: including multiple QoS, and having priority A set of degraded QoS. Therefore, when the bearer network resource available to the user in step 1310 cannot meet the degraded QoS requirement that is determined by the local policy, the AGW may select one of the following priorities in the degraded QoS. The degraded QoS is used to determine whether the bearer network resource currently available to the user satisfies the requirement of the degraded QoS for the resource.
  • Steps 1311 to 1314 The same as steps 1215 to 1218.
  • the steps 1311 to 1313 are optional steps.
  • step 1314 the media stream link between the user's MS and the peer end is successfully established.
  • the business started is s
  • the default QoS information of the application layer authorization is sent to the AGW.
  • the AGW requests the AF to negotiate the degraded QoS information through the VPCRF, and then determines that the current user is available. Whether the bearer network resource satisfies the Shield QoS, if it is not satisfied, the negotiation fails, and if it is satisfied, the resource link is established according to the degraded QoS information. For the specific steps, refer to steps 1005 to 1014 in FIG.
  • step 1310 The bearer network resources available to the user can satisfy the default QoS information, and the AGW returns a message confirming the default QoS information to the VPCRF, and establishes a resource link according to the default QoS information.
  • Step 3 in FIG. 13 1309 3 VPCRF AGW sends only the application layer and the authorization decision by the local policy PCR degraded QoS information, and the user is not subscribed or carriers allow simultaneous transmission of all the QoS information to the AGW.
  • step 1310 if the current bearer network resource available to the user does not meet the degraded QoS that is determined by the PCRF local policy, the AGW may perform further widening processing by referring to steps 1006 to 1010 in FIG.
  • the method may further include the following steps: The AF sends a message to the MS to confirm whether the MS can accept the degraded QoS message, and if the MS returns a message to the AF that can accept the degraded QoS information, If the network side does not accept the default QoS information, the network can perform the degradation processing. Otherwise, when the network side does not accept the default QoS information, it is determined that the QoS negotiation fails.
  • the AF sends a message to the MS confirming that the MS is pleasing to accept the degraded QoS message
  • the AF can be sent to the PCRF or the HPCRF.
  • the AF sends a message to the MS to confirm whether the MS can accept the degraded QoS information, or the PCRF or HPCRP sends the default QoS to the AF when the default QoS information is not accepted by the network side.
  • the message is not accepted by the network side, and the AF receives the default QoS sent by the PCRF or HPCRF. After receiving the message, send a message to the MS confirming that M ⁇ is acceptable for degraded QoS information; if the PCR or VPCR performs local policy ruling on the default QoS information, AF does not send degraded QoS information to the PCRF or HPCRF. Then, after receiving the message sent by the PCRF or the HPCRF to negotiate the degraded QoS message, the AF may send a message to the MS confirming whether the MS can accept the degraded QoS information.
  • the MS may also retransmit the resource corresponding to the degraded QoS information to the AGW.
  • the request is reserved.
  • the AGW may compare the QoS information with the QoS information in the resource reservation request corresponding to the degraded QoS information resent by the user. .

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Abstract

La présente invention concerne un système pour réaliser un mécanisme de négociation de qualité de service (QoS) comprenant : une unité à fonction couche d'application (AF) qui reçoit les informations de demande de service, fournit l'autorisation de QoS pour le service demandé, et envoie les informations de QoS par défaut autorisée et les informations de QoS inférieure autorisée; une entité de traitement de demande de ressources de support qui reçoit les informations de QoS par défaut autorisée et les informations de QoS inférieure autorisée envoyées par l'unité AF, et établit les ressources de support avec les informations de QoS inférieure autorisée lorsque la QoS par défaut autorisée ne satisfait pas les exigences nécessaires à l'établissement des ressources de support. L'invention concerne également un procédé pour réaliser un mécanisme de négociation de QoS et l'entité correspondante. L'utilisation du système et du procédé de l'invention permet d'améliorer la possibilité d'établir le service demandé par l'utilisateur dans une large gamme de qualité acceptée par l'utilisateur et tolérée par le réseau.
PCT/CN2007/001386 2006-04-25 2007-04-25 Système et procédé pour réaliser un mécanisme de négociation de qualité de service Ceased WO2007121686A1 (fr)

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