WO2011157148A2 - Procédé, dispositif et système pour l'établissement d'une session de service d'urgence non vocal - Google Patents

Procédé, dispositif et système pour l'établissement d'une session de service d'urgence non vocal Download PDF

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Publication number
WO2011157148A2
WO2011157148A2 PCT/CN2011/075061 CN2011075061W WO2011157148A2 WO 2011157148 A2 WO2011157148 A2 WO 2011157148A2 CN 2011075061 W CN2011075061 W CN 2011075061W WO 2011157148 A2 WO2011157148 A2 WO 2011157148A2
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WIPO (PCT)
Prior art keywords
eps bearer
noves session
default
noves
value
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PCT/CN2011/075061
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English (en)
Chinese (zh)
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WO2011157148A3 (fr
Inventor
孙扬
梁刚
孙瑞囡
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2011/075061 priority Critical patent/WO2011157148A2/fr
Priority to CN201180000734.4A priority patent/CN102217341B/zh
Publication of WO2011157148A2 publication Critical patent/WO2011157148A2/fr
Publication of WO2011157148A3 publication Critical patent/WO2011157148A3/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections

Definitions

  • the present invention relates to the field of mobile communication devices, and in particular, to a non-voice emergency service (NOVES) session establishment method, device, and system.
  • NOVES non-voice emergency service
  • emergency services Due to its importance, emergency services have become a basic business category for mobile communications. According to the content of emergency services, it is divided into voice emergency services and non-voice emergency services.
  • the user equipment UE
  • PSAP Public Safety Answering Point
  • the data sent includes, but is not limited to, information, pictures, sound/video clips, sound/video streams.
  • the packet data network Packet Data Network (PDN) connection between the UE and the Packet Data Network Gateway (P-GW) is used.
  • PDN Packet Data Network
  • P-GW Packet Data Network Gateway
  • the PDN connection can be established in the initial stage when the UE is attached to the network. You can also create new PDN connections based on different services later.
  • Each of the PDN connections between the UE and the P-GW has a default Evolved Packet System (EPS) bearer for maintaining the IP connection between the UE and the P-GW. It may also have one or more dedicated EPS bearer, used for carrying session signaling and user plane data of a specific QoS (Quality of Service).
  • EPS Evolved Packet System
  • the EPS bearer can be either GBR ( Guaranteed Bit Rate) or Non-GBR (Non-Garanteed Bit Rate).
  • the EPS bearer also has an ARP (Allocation and Retention Priority) level.
  • eNodeB evolved NodeB, evolved base station
  • the ARP level carried by the EPS determines the priority of each EPS bearer, and when the network is insufficient or congested, decides which EPS bearers to release (generally releasing the EPS bearers of the low APR level).
  • NOVES uses SIP (Session Initiation Protocol)-based IMS technology to manage sessions.
  • SIP Session Initiation Protocol
  • IMS IP Multimedia Subsystem
  • the NOVES session is for non-voice services
  • the UE when the UE initiates a NOVES session, it does not re-establish an emergency PDN connection from the UE to the dedicated emergency P-GW, but according to the normal PDN connection, so the NOVES session is carried in the ARP.
  • the NOVES session On a lower level EPS bearer.
  • the NOVES session is easily released due to insufficient wireless resources. Therefore, the normal communication process of transmitting alarm information to the PSAP through the NOVES session is seriously affected, and the communication quality of the NOVES session is greatly reduced. Summary of the invention
  • the present invention provides a NOVES session establishment method, device and system.
  • the specific plan is as follows:
  • An aspect of the present invention provides a non-voice emergency service NOVES session establishment method, including: receiving a NOVES session establishment request sent by a proxy call session control function device P-CSCF, and establishing a NOVES session according to the NOVES session establishment request. Corresponding identification flag and the evolved packet system used by the NOVES session to be established according to the NOVES session establishment request
  • the default ARP value of the EPS bearer indicates that the priority level is lower than the priority indicated by the preset value
  • sending a first modification policy to the policy execution device where the first modification policy includes: at least: an identifier corresponding to the NOVES session to be established, and a preset value, so that the policy execution device is configured according to the
  • the default ARP value of the EPS bearer used by the identifier to modify the NOVES session to be established is the preset value
  • the policy enforcement device is: a policy charging execution device PCEF;
  • the policy enforcement device is: a bearer binding and event reporting function device BBERF.
  • the method further includes: receiving a NOVES session termination request forwarded by the P-CSCF, where the NOVES session termination request includes at least the identifier of the NOVES session;
  • the ARP value carried is the default ARP value.
  • the method further includes:
  • the default ARP value of the EPS bearer used by the NOVES session corresponding to the identification mark is recorded.
  • the method further includes: receiving a NOVES session termination request forwarded by the P-CSCF, where the NOVES session termination request includes at least the identifier of the NOVES session; Terminating a NOVES session corresponding to the identification mark according to the identification flag;
  • a second modification policy of the default ARP value of the EPS bearer used by the NOVES session so that the policy enforcement device modifies the NOVES session corresponding to the identifier according to the default ARP value of the EPS bearer used by the NOVES session corresponding to the identifier
  • the ARP value of the EPS bearer used is the default ARP value.
  • a non-voice emergency service NOVES session establishment method including: receiving a first modification policy sent by a policy charging rule device PCRF, where the first modification policy at least includes: identifying corresponding to a NOVES session to be established Logo and preset value;
  • Modifying the default allocation and hold priority ARP value of the EPS bearer is the preset value; sending a policy execution success message to the PCRF.
  • the EPS bearer used by the NOVES session to be established includes a default EPS bearer of the PDN connection used by the NOVES session; and the EPS bearer used to modify the NOVES session to be established is the preset.
  • the value is specifically: the default ARP value of the default EPS bearer of the PDN connection used to modify the NOVES session to be established is the preset value; or
  • the EPS bearer used by the NOVES session to be established includes a default EPS bearer and a dedicated RPS bearer of the PDN connection used by the NOVES session; and the default ARP value of the EPS bearer used to modify the NOVES session to be established is modified.
  • the preset value is specifically: the default EPS value of the PDN connection used by the NOVES session to be established and the default ARP value of the dedicated RPS bearer are respectively modified as the preset value.
  • the modifying the default AP value of the EPS bearer to the preset value comprises: searching a context of the EPS bearer;
  • Modifying the ARP value of the quality of service Qos in the bearer context is the preset value
  • the ARP value of the EPS bearer is modified to be the preset value.
  • the method further includes:
  • the method further includes:
  • the default ARP value of the EPS bearer used by the NOVES session corresponding to the identification mark is recorded.
  • the method further includes:
  • the ARP value of the EPS bearer is a default A P value.
  • the EPS bearer used by the NOVES session includes a default EPS bearer of the PDN connection corresponding to the NOVES session; and the ARP value of the EPS bearer used by the NOVES session corresponding to the identifier is modified to be a default ARP value.
  • the ARP value of the default EPS bearer of the PDN connection used by the NOVES session corresponding to the identifier is modified to be the default ARP value; or
  • the EPS bearer used by the NOVES session includes a default EPS bearer and a dedicated RPS bearer of the PDN connection used by the NOVES session; and the ARP value of the EPS bearer used by the NOVES session corresponding to the identifier is modified by default.
  • the ARP value is specifically: The default EPS bearer of the PDN connection used by the NOVES session and the ARP value of the dedicated RPS bearer are respectively modified to the default ARP value.
  • a non-voice emergency service NOVES session establishing device including: a session establishment request receiving module, configured to receive a NOVES session establishment request sent by the proxy call session control function device P-CSCF, and establish according to the NOVES session. Requesting an identifier corresponding to the NOVES session to be established and a default allocation and retention priority ARP value of the evolved packet system EPS bearer used by the NOVES session to be established according to the NOVES session establishment request;
  • a first policy sending module configured to send a first modification policy to the policy execution device when the priority level of the default ARP value of the EPS bearer is lower than a priority level indicated by the preset value, where the first modification policy includes at least And an identifier corresponding to the NOVES session to be established, and the preset value, so that the policy execution device modifies the default ARP value of the EPS bearer used by the NOVES session to be established according to the identifier The preset value;
  • the success message receiving module is configured to receive a policy execution success message sent by the policy execution device.
  • the method further includes:
  • a session termination request receiving module configured to receive a NOVES session termination request forwarded by the P-CSCF, where the NOVES session termination request includes at least the identifier of the NOVES session;
  • a session termination module configured to terminate, according to the identifier, a corresponding to the identifier NOVES session
  • a second policy sending module configured to send a second modification policy that includes the identifier to the policy execution device, so that the policy execution device modifies the ARP value of the EPS bearer used by the NOVES session corresponding to the identifier to a default ARP value.
  • the method further includes:
  • a first recording module configured to record a default ARP value of the EPS bearer used by the NOVES session to be established
  • the second policy sending module is specifically configured to send, to the policy execution device, a second modification policy that includes the identifier and a default ARP value of the EPS bearer used by the NOVES session corresponding to the identifier, so that the policy execution device And modifying the AP value of the EPS bearer used by the NOVES session corresponding to the identifier according to the default ARP value of the EPS bearer used by the NOVES session corresponding to the identifier to a default ARP value.
  • a non-voice emergency service NOVES session establishing device including: a first policy receiving module, configured to receive a first modification policy sent by a policy charging rule device PCRF, where the first modification policy at least includes: An identification mark and a preset value corresponding to the NOVES session to be established;
  • a determining module configured to determine, according to the identifier, an EPS bearer used by a NOVES session to be established corresponding to the identifier
  • a first modification module configured to modify a default allocation and hold priority ARP value of the EPS bearer to be the preset value
  • the success message sending module is configured to send a policy execution success message to the PCRF.
  • the first modification module includes: a searching unit, configured to search for a context of the EPS bearer;
  • a first modifying unit configured to modify an ARP value of the quality of service Qos in the bearer context to be a preset value
  • the second modifying unit is configured to modify the ARP value of the EPS bearer to be the preset value.
  • the method further includes:
  • a second policy receiving module configured to receive a second modification policy that is sent by the PC F and includes a default ARP value of the EPS bearer used by the identifier and the NOVES session corresponding to the identifier;
  • a second modification module configured to modify, according to the default ARP value of the EPS bearer used by the NOVES session corresponding to the identifier in the second modification policy, that the ARP value carried by the EP S is a default ARP value.
  • the method further includes:
  • a second recording module configured to record a default ARP value of the EPS bearer used by the NOVES session to be established
  • An obtaining module configured to acquire a record of a NOVES session corresponding to the identifier
  • the second modification module is further configured to modify, according to the default ARP value of the EPS bearer used by the NOVES session corresponding to the identifier, the ARP value of the EPS bearer to be a default ARP value.
  • a non-voice emergency service NOVES session establishment system comprising: a proxy call session control function device P-CSCF, a policy charging rule device PCRF as described above, and a policy enforcement device as described above, wherein:
  • the P-CSCF is configured to receive a NOVES session establishment request sent by the user, and forward the NOVES session establishment request to the PCRF.
  • the PCRF allocates a preset value for the ARP of the EPS bearer used by the NOVES session, and when the NOVES level, the default ARP value of the EPS bearer is modified.
  • the NOVES session can be established on an EPS bearer with a higher ARP level.
  • the radio resource is insufficient, the ARP level of the EPS bearer is released, and the ongoing NOVES session is interrupted, affecting NOVES.
  • the problem of communication quality of the session occurs, improving the reliability of the NOVES session.
  • FIG. 1 is a flowchart of a method for establishing a NOVES session according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for establishing a NOVES session according to an embodiment of the present invention
  • FIG. 3 is a flowchart of another method for establishing a NOVES session according to an embodiment of the present invention
  • FIG. 4 is an EPS bearer ARP according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for establishing a NOVES session according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a NOVES session establishing device according to an embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of a NOVES session establishment system disclosed in an embodiment of the present invention.
  • the present invention discloses a NOVES session establishment method, which is applied to a PCRF (Policy Charging and Rule Function) in a communication network, which is shown in FIG. 1 and includes:
  • Step S1 receiving a NOVES session establishment request sent by the P-CSCF (Proxy-Call Session Control Function), a identifier corresponding to the NOVES session to be established according to the NOVES session establishment request, and the basis The default allocation and retention priority ARP value of the evolved packet system EPS bearer used by the NOVES session to be established by the NOVES session establishment request.
  • P-CSCF Proxy-Call Session Control Function
  • the policy execution device allocates an EPS bearer for the NOVES session to be established according to the NOVES session establishment request, or selects from the existing EPS bearer.
  • the EPS bearer used by the NOVES session the default ARP value of the EPS bearer usually indicates the correspondence of the lower bearers.
  • the identification information corresponding to the NOVES session and the default ARP value of the EPS bearer used by the NOVES session will be included, together with the NOVES session establishment.
  • the request is sent to the P-CSCF together, and then forwarded to the PCRF by the P-CSCF.
  • the NOVES session establishment request is received by the PCRF, the identifier corresponding to the NOVES session to be established according to the NOVES session establishment request, and the default ARP value of the EPS bearer used by the NOVES session, and the NOVES session corresponding to the request is established.
  • the policy execution device and the P-CSCF can be designed in one piece or independently.
  • the establishment of a NOVES session according to the NOVES session establishment request belongs to the prior art, and is only briefly introduced herein and will not be described in detail.
  • the UE After the UE establishes a PDN connection with the policy enforcement device, the UE initiates a NOVES session establishment request through the current PDN connection, and the destination address in the NOVES session establishment request is an emergency number URN, and the NOVES session establishment request may further include a current need to be established.
  • the NOVES service indicator can take the format of the ICSI (IMS Communication Service Identifier), for example:
  • the P-CSCF interacts with the PCRF through the Rx interface to send a NOVES session establishment request including the emergency number URN and the NOVES service flag to the PCRF.
  • the PCRF receives the NOVES session establishment request, and identifies the request as a NOVES session establishment request according to the emergency number URN and NOVES service flags.
  • the NOVES session establishment request further includes: a UE identifier, a UE IP address, a media type, a media format, a bandwidth, a flow description, a P-CSCF application identifier, an application function AF service identifier (eg, ICSI), and an AF application event identifier.
  • a UE identifier e.g., a UE IP address
  • a media type e.g., a media format
  • a bandwidth e.g., a bandwidth
  • a flow description e.g, a P-CSCF application identifier
  • an application function AF service identifier eg, ICSI
  • an AF application event identifier e.g, AF record information, flow status, priority indication, emergency indication, etc.
  • the PCRF may return an acknowledgement message to the P-CSCF to inform the P-CSCF to receive the NOVES session establishment request.
  • the first modification policy is sent to the policy execution device, where the first modification policy includes: The identifier corresponding to the established NOVES session and the preset value, so that the policy execution device modifies the default ARP value of the EPS bearer used by the NOVES session to be established according to the identifier to the preset value. ;
  • the ARP value assigned to the EPS bearer used by the NOVES session indicates the corresponding priority. That is, the PCRF sets a priority level for the EPS bearer corresponding to the NOVES session in advance.
  • the preset ARP value may be a dedicated value for the EPS bearer corresponding to the NOVES session, or may be a dedicated value selection range for the EPS bearer corresponding to the NOVES session, and an ARP value is selected from the range as the current requirement.
  • the preset value of the EP S bearer corresponding to the established NOVES session is a dedicated value for the EPS bearer corresponding to the NOVES session.
  • the dedicated value or the dedicated value selection range in this embodiment may be separately set according to different operator policies, and the ARP value ranges from 1 to 15, and 1 is the highest level priority. 1 to 8 are used for emergency services and other priority businesses. 9 to 15 are for general business use, and an ARP range for visiting roaming terminals when roaming. Generally speaking, the ARP value of the NOVES service should be between 1 and 8, but which value or which value is used as the value of the exclusive value depends on the operator, which can be 3, 4 and 5, or it can be 6, 7 and 8. Usually, the dedicated value or the ARP value within the dedicated range has a higher priority.
  • the EPS bearer used by the NOVES session includes two cases, the first case, when NOVES When the EPS bearer used by the session is the default EPS bearer in the PDN connection used by the NOVES session, the EPS bearer used by the NOVES session includes only the default EPS bearer of the PDN connection. In the second case, when the EPS bearer used by the NOVES session is a dedicated EPS bearer in the PDN connection used by the NOVES session, the EPS bearer used by the NOVES session includes the default EPS bearer and the dedicated bearer of the PDN connection.
  • the identification mark in this embodiment may be a service data stream SDF flag.
  • the first modification policy in this embodiment may be implemented by using a PCC (Policy and Charging Control) policy, and the PCRF sets the SDF flag and the preset value in the PCC policy, and sends the SDF flag to the policy execution device.
  • PCC Policy and Charging Control
  • the policy execution device After receiving the PCC policy, the policy execution device changes the default ARP value of the EPS bearer used by the NOVES session corresponding to the SDF flag to a preset value.
  • This embodiment does not limit the identification mark to the SDF flag, which can also be used, and other can identify
  • the flag of the NOVES session is used as an identification flag, so that the policy enforcement device can identify the NOVES session according to the identification identifier, and then use the correspondence between the NOVES session established by the NOVES session and the EPS bearer it uses to find the EPS bearer to which the PCC policy is applied.
  • the default ARP value of the EPS bearer used by the NOVES session to be established by the PCRF according to the NOVES session establishment request is the PDN connection.
  • the subscription information stored in the user's UE, which is allocated for the PDN connection, is usually a value indicating a lower priority.
  • the priority indicated by the default ARP value is compared with the priority level indicated by the preset value configured by the PCRF for the NOVES session, and the priority represented by the default ARP value is lower than the PCRF configured for the NOVES session.
  • the default AP value needs to be modified to be a preset value configured by the PCRF for the NOVES session, that is, the first modification policy is sent to the policy execution device.
  • the PCRF also needs to record the default ARP value of the EPS bearer, that is, record the NOVES session corresponding to the identifier.
  • the default ARP value of the EPS bearer used is used to modify the ARP value of the EPS bearer to a default value by a second modification policy to the default ARP value after the NOVES session is terminated.
  • the step of recording the default ARP value of the EPS bearer corresponding to the identification mark may also be performed by the policy enforcement device. Specifically, when the policy execution device modifies the default ARP value of the EPS bearer corresponding to the identifier, or after, the default ARP value of the EPS bearer used by the NOVES session corresponding to the identifier is recorded. Steps, so that the policy enforcement device modifies the ARP value of the EPS bearer to a default value after the NOVES session is terminated.
  • the second modification policy sent by the PRCF to the policy enforcement device does not include the default ARP value of the EPS bearer corresponding to the identifier. Only the identification number is included.
  • the policy execution device modifies the default ARP value of the EPS bearer used by the NOVES session to be the preset value: The policy execution device modifies the default ARP value of the default EPS bearer of the PDN connection used by the NOVES session to the preset value.
  • the policy execution device modifies the default AP value of the EPS bearer used by the NOVES session as the preset value, specifically The policy execution device separately modifies the default EPS bearer of the PDN connection used by the NOVES session and the default ARP value of the dedicated RPS bearer as the preset value.
  • the policy execution device is: a policy charging execution device in the packet data gateway. PCEF;
  • the policy execution device is: a bearer binding and event reporting function device BBERF in the serving gateway. According to different protocols, in this embodiment, different policy execution devices are selected to execute the first modification strategy.
  • Step S13 The PCRF receives a policy execution success message sent by the policy execution device.
  • the policy execution device After the first modification policy is successfully executed, the policy execution device sends a policy execution success message to the PCRF to notify that the AR value of the EPS bearer corresponding to the NOVES session that the PCRF needs to establish has been modified, and the PCRF can be modified according to the modified EPS bearer. ARP value, complete the establishment of the NOVES session.
  • the PCRF allocates a preset value to the ARP of the EPS bearer used by the NOVES session, and performs the policy execution when the default ARP value of the EPS bearer used by the NOVES session selects the minimum value within the range.
  • the device sends the first modification policy, so that the policy execution device changes the default ARP value of the EPS bearer used by the NOVES session to a preset value, so that the NOVES session can be established on the EPS bearer with a higher ARP priority level, avoiding the wireless
  • the ARP value of the EPS bearer indicates that the priority level is low, and the ongoing NOVES session is interrupted, which affects the communication quality of the NOVES session, and improves the reliability of the NOVES session.
  • the flow of the method for establishing another NOVES session is as shown in FIG. 2, and after the establishment process shown in FIG. 1, when the NOVES session needs to be released, the method includes:
  • Step S21 Receive a NOVES session termination request forwarded by the P-CSCF, and terminate the NOVES session.
  • the request includes at least an identification mark of the NOVES session;
  • Step S22 terminating the NOVES session corresponding to the identification mark according to the identification flag; Step S23, transmitting, to the policy execution device, the EPS included in the NOVES session including the identification mark and the identification mark a second modification policy of the default ARP value carried, so that the policy enforcement device modifies the ARP of the EPS bearer used by the NOVES session corresponding to the identifier according to the default ARP value of the EPS bearer used by the NOVES session corresponding to the identifier The value is the default ARP value. .
  • the policy enforcement device when the serving gateway and the packet data gateway are based on the GTP protocol, the policy enforcement device is: PCEF; when the serving gateway and the packet data gateway are based on the PMIP protocol, the policy enforcement device is: BBERF. According to different protocols, in this embodiment, different policy execution devices are selected to perform the second modification strategy.
  • the ARP value of the EPS bearer used to modify the NOVES session is a default ARP value. Specifically, the ARP value of the default EPS bearer of the PDN connection used by the NOVES session is modified to a default ARP value.
  • the policy execution device determines that the EPS bearer used by the NOVES session includes a default EPS bearer and a dedicated RPS bearer for the PDN connection used by the NOVES session, the ARP value of the corresponding EPS bearer modified by the NOVES is defaulted.
  • the AP value is specifically: The default ARP value of the default EPS bearer and the dedicated RPS bearer of the PDN connection used by the NOVES session is respectively modified.
  • the ARP value is not recorded by the PCRF, but is recorded by the policy enforcement device, and the second modification policy does not include the default ARP of the EPS bearer used by the NOVES session corresponding to the identification flag. value.
  • the policy execution device modifies the EPS bearer corresponding to the identifier according to the policy execution device.
  • the default ARP value is a preset value or after, the default ARP value of the EPS carried by the identifier corresponding to the identifier is changed, and the ARP value of the EPS bearer used by the NOVES session corresponding to the identifier is changed to the default ARP value.
  • the PCRF since the default ARP value of the EPS bearer is stored in the subscription information of the user, the PCRF obtains the default ARP value of the EPS bearer of the connection in the process of establishing the PDN connection. Therefore, the policy execution device may also obtain the default ARP value of the EPS bearer from the PCRF by using other methods, and then modify the ARP value of the EPS bearer used by the NOVES session corresponding to the identifier to the default ARP value.
  • the ARP value in the static QoS of the EPS bearer used by the UE to establish the session is not a preset value. Therefore, when the NOVES session is terminated, the EPS bearer does not need to continue to use the preset value as the preset value. Its own ARP value.
  • the priority represented by the ARP value reflects the amount of resources occupied by the EPS bearer. When the priority of the EPS bearer is high, more resources can be occupied. If the ARP value of the EPS bearer used to establish the session is still a preset value, the EPS bearer still has a higher priority. When the EPS bearer is used for normal services, it is a normal service. Provide more resources, but these resources are often not fully utilized, which will result in waste of resources and reduce the efficiency of resource utilization.
  • the ARP value of the EPS bearer used by the NOVES session is changed to the default ARP value, so that the priority of the EPS bearer is restored to the default level, thereby avoiding the waste of the foregoing resources and improving the resources. Utilization rate.
  • the invention discloses another NOVES session establishing method, which is applied to a policy in a communication network Execute the device slightly. The process is shown in Figure 3. It includes:
  • Step S31 Receive a first modification policy sent by the PCRF, where the first modification policy at least includes: an identifier and a preset value corresponding to the NOVES session to be established;
  • the identification mark in this embodiment is an SDF mark.
  • the P-GW generally has a PCEF.
  • a policy enforcement device it is responsible for receiving the PCC policy sent by the PCRF and performing the specified EPS bearer according to the PCC policy.
  • PCC strategy If the S-GW and the P-GW in the network where the user is located are the PMIP protocol, the BBERF in the S-GW is used as the policy enforcement device, and is responsible for receiving the PCC policy sent by the PCRF, and executing the PCC policy on the specified EPS bearer according to the PCC policy. .
  • the PCC policy is based on SDF. When the PCRF interacts with PCEF or BBERF, it provides the SDF flag.
  • the PCEF and BBERF find the EPS bearer that needs to execute the policy according to the SDF flag.
  • the first modification strategy in this embodiment is implemented by using a PCC policy, and the PCRF sets the SDF flag and the preset value in the PCC policy, and sends it to the policy execution device.
  • Step S32 Determine, according to the identifier, an EPS bearer used by the NOVES session to be established corresponding to the identifier;
  • the EPS bearer corresponding to the SDF flag is found using the SDF flag.
  • Step S33 Modify a default ARP value of the EPS bearer to be the preset value.
  • the method may further include:
  • Step S34 Send a policy execution success message to the PCRF.
  • the PCRF completes the establishment of the NOVES session according to the modified ARP value of the EPS bearer.
  • the policy enforcement device may also record a default ARP value of the EPS bearer used by the NOVES session corresponding to the identifier, so as to be used according to the recorded NOVES session corresponding to the identifier when the NOVES session is terminated.
  • the default ARP value carried by the EPS modifies the ARP value of the EPS bearer as the default value.
  • the execution failure message may be sent to the PCRF, and the PCRF may feed the message to the UE, wait for the subsequent operation of the UE, or automatically trigger the process of resending the first modification policy, and the specific manner may be according to different communication scenarios.
  • the EPS bearer is established between the policy enforcement device and the UE.
  • the eNodeB and the core network element where the UE is located determine the priority of each EPS bearer of the EPS according to the ARP value.
  • the specific process of executing the first modification policy to modify the default A P value of the EPS bearer to the preset value is as shown in FIG. 4, including:
  • Step S41 Find a context of the EPS bearer.
  • Step S42 Modify the ARP value of the QoS of the QoS in the EPS bearer context to be a preset value.
  • Step S43 Modify the ARP value of the EPS bearer to a preset value.
  • the ARP value of the default EPS bearer needs to be modified.
  • the NOVES session is established on the PDN-connected EPS bearer, the ARP value of the default EPS bearer and the dedicated EPS bearer needs to be modified.
  • the default ARP value of the EPS bearer used to modify the NOVES session is the preset value:
  • the default of the PDN connection used by the NOVES session The default ARP value of the EPS bearer is the preset value; or
  • the default ARP value of the EPS bearer used to modify the NOVES session is the The preset value is specifically: the default ARP value of the PDN connection used by the NOVES session and the default ARP value of the dedicated RPS bearer are respectively modified.
  • the flow of the method for establishing another NOVES session is as shown in FIG. 5. After the setup process shown in FIG. 4, when the NOVES session is required, the method includes:
  • Step S51 Receive a second modification policy that is sent by the PCRF and includes a default ARP value of the EPS bearer used by the identifier and the NOVES session corresponding to the identifier.
  • Step S52 Modify, according to the default ARP value of the EPS bearer used by the NOVES session corresponding to the identifier in the second modification policy, that the ARP value of the EPS bearer is a default ARP value.
  • the NOVES session corresponding to the identifier is used.
  • the ARP value carried by the EPS is changed to the default ARP value.
  • the policy execution device may obtain the default ARP value of the EPS bearer from the PCRF in other manners, and then modify the ARP value of the EPS bearer used by the NOVES session corresponding to the identifier to the default.
  • the second modification policy does not include the EPS bearer used by the NOVES session corresponding to the identifier.
  • the default ARP value, the default ARP value of the EPS bearer used by the policy execution device according to the NOVES session corresponding to the identifier recorded by itself in the above embodiment, and the EPS bearer used by the NOVES session corresponding to the identifier The ARP value is modified.
  • the specific modification process is: the policy execution device receives the second modification policy that is sent by the PCRF and includes the identifier, and obtains a default ARP value of the EPS bearer used by the NOVES session corresponding to the identifier, and according to The default ARP value of the EPS bearer used by the obtained NOVES session corresponding to the identifier is modified.
  • the ARP value of the EPS bearer used by the NOVES session corresponding to the identifier is a default AP value.
  • the ARP value of the EPS bearer used to modify the NOVES session is a default ARP value, specifically: modifying the NOVES
  • the ARP value of the default EP S bearer of the PDN connection used by the session is the default ARP value
  • the ARP value of the EPS bearer used to modify the NOVES session is a default ARP value, which is specifically:
  • the default ARP value of the default EPS bearer and the dedicated RPS bearer of the PDN connection used by the NOVES session is modified as the default ARP value.
  • the embodiment of the present invention also discloses a NOVES session establishing device. The structure is as shown in FIG.
  • the session establishment request receiving module 61 is configured to receive an identifier corresponding to the NOVES session that is to be established according to the NOVES session establishment request, and a NOVES session to be established according to the NOVES session establishment request, by the NOVES session establishment request sent by the P-CSCF.
  • the default ARP value of the used EPS bearer is configured to send the first modification to the policy execution device when the priority level indicated by the ARP value of the EPS bearer is lower than the priority level indicated by the preset value.
  • the first modification policy includes: an identifier corresponding to the NOVES session to be established and the preset value, so that the policy execution device modifies the NOVES to be established according to the identifier
  • the default ARP value of the EPS bearer used by the session is the preset value; the success message receiving module 63 is configured to receive a policy execution success message sent by the policy execution device.
  • the foregoing apparatus further includes:
  • the session termination request receiving module 64 is configured to receive a NOVES session termination request forwarded by the P-CSCF, where the NOVES session termination request includes at least the identifier of the NOVES session;
  • the session termination module 65 is configured to terminate a NOVES session corresponding to the identifier according to the identifier;
  • the second policy sending module 66 is configured to send a second modification policy that includes the identifier to the policy execution device, so that the ARP value of the EPS bearer used by the policy execution device to modify the NOVES session corresponding to the identifier is a default ARP value. .
  • the first recording module is further configured to record a default ARP value of the EPS bearer used by the NOVES session to be established; and at this time, the second policy sending module is further configured to execute the device to the policy. Transmitting a second modification policy including a default ARP value of the EPS bearer used by the identifier and the NOVES session corresponding to the identifier, so that the policy execution device uses the EPS according to the NOVES session corresponding to the identifier Hosted default ARP value modification
  • the ARP value of the EPS bearer used by the NOVES session corresponding to the identifier is a default ARP value.
  • the NOVES session establishing device disclosed in this embodiment may be a PCRF in a communication network, and the working processes of each module are as follows:
  • the session establishment request receiving module receives the NOVES session establishment request sent by the P-CSCF, the identifier corresponding to the NOVES session to be established according to the NOVES session establishment request, and the NOVES session to be established according to the NOVES session establishment request.
  • the first policy sending module sends a first modification policy to the policy execution device, when the priority ARP value of the EPS bearer is determined to be lower than the priority level indicated by the preset value.
  • a modification policy includes: an identifier corresponding to the NOVES session to be established and the preset value, so that the policy execution device modifies the EPS bearer used by the NOVES session to be established according to the identifier
  • the default ARP value is the preset value
  • the success message receiving module receives the policy execution success message sent by the policy execution device.
  • each module of the NOVES session establishing device disclosed in this embodiment is only a preferred mode.
  • the specific working process may refer to the corresponding method embodiment part, which is not described herein.
  • the NOVES session establishing device disclosed in this embodiment allocates a preset value to the ARP of the EPS bearer used by the NOVES session, and the default ARP value of the EPS bearer used by the NOVES session indicates that the priority level is lower than the preset value.
  • the first modification policy is sent to change the default ARP value of the EPS bearer to a preset value, so that the NOVES session can be established on the EPS bearer with a higher ARP priority level, avoiding the problem when the radio resources are insufficient.
  • the bearer ARP has a lower priority and is released, interrupting the ongoing NOVES session, affecting the communication quality of the NOVES session, and improving the reliability of the NOVES session.
  • the structure of the further NOVES session establishing device disclosed in the embodiment of the present invention is as shown in FIG. 7, and includes: a first policy receiving module 71, a determining module 72, a first modifying module 73, and a success message sending module 74, where:
  • the first policy receiving module 71 is configured to receive a first modification policy that is sent by the PCRF, where the first modification policy includes: at least: an identifier and a preset value corresponding to the NO VES session to be established; and a determining module 72, configured to: And determining, by the identifier, the EPS bearer used by the NOVES session to be established corresponding to the identifier; the first modifying module 73, configured to modify the default ARP value of the EPS bearer to be the preset value;
  • the sending module 74 is configured to send a policy execution success message to the PCRF.
  • the first modification module 73 includes:
  • the searching unit 731 is configured to search for a context of the EPS bearer
  • the first modifying unit 732 is configured to modify the ARP value of the service quality Qos in the bearer context to be a preset value
  • the second modifying unit 733 is configured to modify the ARP value of the EPS bearer to be a preset value.
  • the NOVES session establishing device disclosed in this embodiment further includes: a second policy receiving module 75, configured to receive an EPS bearer that is sent by the PCRF and includes the identifier and a NOVES session corresponding to the identifier The second modification strategy of the default AP value;
  • the second modification module 76 is configured to modify, according to the default ARP value of the EPS bearer used by the NOVES session corresponding to the identifier in the second modification policy, that the ARP value of the EPS bearer is a default ARP value.
  • the NOVES session establishing device disclosed in this embodiment may further include: a module, configured to record a default ARP value of an EPS bearer used by the NOVES session to be established;
  • An obtaining module configured to obtain a default ARP value of the EPS bearer used by the NOVES session corresponding to the identifier
  • the second modification module is further configured to: according to the acquired identifier corresponding to the identifier
  • the default ARP value of the EPS bearer used by the NOVES session is modified with the ARP value of the EPS bearer as the default ARP value. .
  • the working process of each module of the NOVES session establishing device disclosed in this embodiment is as follows:
  • the first policy receiving module receives the first modification policy sent by the PCRF, and the first modification policy at least includes: the identification corresponding to the NOVES session to be established. a flag and a preset value, the determining module determines, according to the identifier, an EPS bearer used by the NOVES session to be established corresponding to the identifier, and the first modifying module modifies the default ARP value of the EPS bearer to the preset value,
  • the successful message sending module sends a policy execution success message to the PCRF.
  • the working process of the modules of the NOVES session establishing device disclosed in this embodiment is only a preferred mode, and the specific working process may refer to the corresponding method embodiment part, and details are not described herein again.
  • the NOVES session establishing device disclosed in this embodiment may be a policy enforcement device in the communication network. If the S-GW and the P-GW in the network where the user is located are GTP, the NOVES session establishing device in this embodiment is P.
  • the PCEF in the GW, if the S-GW and the P-GW in the network where the user is located are the PMIP protocol, the NOVES session establishing device in this embodiment is the BBERF in the S-GW.
  • the present invention also discloses a NOVES session establishment system, which has the structure shown in FIG. 8, and includes: a P-CSCF 81, a PCRF 82, and a policy execution device 83, wherein:
  • the P-CSCF 81 is configured to receive a NOVES session establishment request sent by the user, and forward a NOVES session establishment request to the PCRF;
  • the PCRF 82 is configured to receive an identifier corresponding to the NOVES session that needs to be established according to the NOVES session establishment request, and an evolution used by the NOVES session to be established according to the NOVES session establishment request, by the NOVES session establishment request sent by the P-CSCF.
  • the first modification policy is sent to the policy execution device, where
  • the first modification policy at least includes: an identifier corresponding to the NOVES session to be established and the preset value, so that the policy execution device modifies the EPS used by the NOVES session to be established according to the identifier
  • the default ARP value of the bearer is the preset value; receiving a policy execution success message sent by the policy execution device;
  • a policy execution device 83 configured to send, by the PCRF, a first modification policy, where the first modification policy at least includes: an identifier and a preset value corresponding to the NOVES session to be established; determining, according to the identifier, the identifier And corresponding to the EPS bearer used by the NOVES session to be established; modifying the default ARP value of the EPS bearer to the preset value; and sending a policy execution success message to the PCRF.
  • the P-CSCF, PCRF, and policy enforcement device in various embodiments of the present invention may be a computer, and may be any hardware in the network result.
  • the three can be independent devices, and the corresponding functions can be set in the same hardware entity, and the present invention does not limit this.
  • RAM random access memory
  • ROM read only memory
  • EEPROM electrically programmable ROM
  • EEPROM electrically erasable programmable ROM
  • registers hard disk, removable disk, CD-ROM, or technical fields. Any other form of storage medium known.

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  • Telephonic Communication Services (AREA)

Abstract

L'invention concerne un procédé, un dispositif et un système pour l'établissement d'une session de service d'urgence non vocal (NOVES), qui comprend : la réception d'une demande d'établissement de session NOVES, d'une identification correspondant à la session NOVES, et d'une valeur de priorité d'attribution et de rétention (ARP) par défaut d'une porteuse de système par paquets évolué (EPS) utilisée dans la session NOVES ; lorsque la priorité indiquée par la valeur ARP par défaut de la porteuse EPS est inférieure à la priorité indiquée par une valeur prédéfinie, la transmission d'une première politique de modification à un dispositif d'exécution de politique pour modifier la valeur APR par défaut de la porteuse EPS à la valeur prédéfinie. Dans le procédé d'établissement de session NOVES décrit par les modes de réalisation de l'invention, une fonction de règles et de facturation de politique (PCRF) attribue une valeur prédéfinie à l'ARP de la porteuse EPS utilisée dans la session NOVES ; lorsque la priorité correspondant à la valeur ARP par défaut de la porteuse EPS est inférieure à la priorité indiquée par la valeur prédéfinie, la valeur ARP par défaut de la porteuse EPS est modifiée à la valeur prédéfinie, pour que la session NOVES soit établie sur la porteuse EPS avec un niveau supérieur, et la fiabilité de la session est améliorée.
PCT/CN2011/075061 2011-05-31 2011-05-31 Procédé, dispositif et système pour l'établissement d'une session de service d'urgence non vocal WO2011157148A2 (fr)

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CN201180000734.4A CN102217341B (zh) 2011-05-31 2011-05-31 非语音紧急业务会话建立方法、设备及系统

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CN1933656A (zh) * 2005-09-16 2007-03-21 中兴通讯股份有限公司 宽带码分多址系统中的紧急呼叫处理方法
CN101800958A (zh) * 2009-02-10 2010-08-11 中兴通讯股份有限公司 获取紧急会话信息的方法和系统
CN101848448A (zh) * 2009-03-25 2010-09-29 华为技术有限公司 紧急呼叫业务的处理方法、装置及系统

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CN1933656A (zh) * 2005-09-16 2007-03-21 中兴通讯股份有限公司 宽带码分多址系统中的紧急呼叫处理方法
CN101800958A (zh) * 2009-02-10 2010-08-11 中兴通讯股份有限公司 获取紧急会话信息的方法和系统
CN101848448A (zh) * 2009-03-25 2010-09-29 华为技术有限公司 紧急呼叫业务的处理方法、装置及系统

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