WO2012110002A1 - Procédé et dispositif pour un contrôle d'accès - Google Patents

Procédé et dispositif pour un contrôle d'accès Download PDF

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Publication number
WO2012110002A1
WO2012110002A1 PCT/CN2012/071257 CN2012071257W WO2012110002A1 WO 2012110002 A1 WO2012110002 A1 WO 2012110002A1 CN 2012071257 W CN2012071257 W CN 2012071257W WO 2012110002 A1 WO2012110002 A1 WO 2012110002A1
Authority
WO
WIPO (PCT)
Prior art keywords
session management
user equipment
request message
core network
backoff time
Prior art date
Application number
PCT/CN2012/071257
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English (en)
Chinese (zh)
Inventor
王胡成
Original Assignee
电信科学技术研究院
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Publication of WO2012110002A1 publication Critical patent/WO2012110002A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and apparatus for access control.
  • the existing 3rd Generation Partnership Project (3GPP) protocol proposes that the core network control entity services a Serving GPRS Support Node (SGSN) or a Mobility Management Entity (MME).
  • SGSN Serving GPRS Support Node
  • MME Mobility Management Entity
  • the non-access stratum (NAS) request message carrying the low-priority access indication may be preferentially rejected, and the back-off time may be selectively carried in the reject message, so that the user equipment is backed off. No requests can be initiated until the timer expires.
  • the mobile management layer (MM layer) and the session management layer (SM layer) are independently maintained.
  • the network For the MM layer, the network performs APN based mobility management congestion control on the user equipment (UE) that subscribes to the Access Point Name (APN), when such UE initiates mobility management.
  • UE user equipment
  • APN Access Point Name
  • the network determines whether the special APN is congested. If yes, the MM request is rejected, and the mobility management back-off timer (MM back-off timer) may be carried. After the MM back-off timer is received, the UE does not initiate any mobility management (MM) process until the timer corresponding to the backoff time expires.
  • the packet data network connection request (PDN Connectivity Request) for the APN is rejected, and the session management back-off timer is carried in the reject message. After receiving the back-off timer, the UE does not initiate any session management process for the 40 pairs of APNs. If the APN is not provided in the PDN connectivity Request message, the network determines according to the default (default) APN.
  • the APN corresponding to the PDN connectivity Request initiated by the UE may not be in a congested state.
  • the UE may still initiate a Session Management (SM) procedure for other APNs. Therefore, under the SGSN or MME overload condition, session management congestion control (Session Management Congestion The Control mechanism does not work effectively.
  • Embodiments of the present invention provide a method and an apparatus for access control, which are used to implement better access control.
  • a method for access control, applied to the network side includes the following steps:
  • the core network control node receives the session management request sent by the user equipment.
  • the session management request message is sent to the user equipment, and the core network control node sends the session management backoff time information to the user equipment.
  • a message processing method in the access process is applied to the user equipment side, and includes the following steps:
  • the user equipment sends a session management request Session Management Request message
  • the user equipment receives the session management backoff time information sent by the core network control node, Session Management back-off timer;
  • a core network control node device includes:
  • the interface module is configured to receive a session management request sent by the user equipment, a session management request message, and a control module, configured to: when the node is in an overload state, instruct the interface module to send a session management back-off timer to the user equipment.
  • a user equipment including:
  • An interface module configured to send a session management request, a session management request message, and a session management backoff time information sent by the core network control node, a session management back-off timer;
  • the control module is configured to not send the session management request message until the timer corresponding to the session management backoff time information expires.
  • the core network control node after receiving the session management request message, determines that the node is in an overload state, and may reject the request of the user equipment, and send the session management backoff time information to the user equipment. (Session Management back-off timer), it is no longer necessary to determine whether the APN corresponding to the session management request message is congested. That is, in the embodiment of the present invention, when the core network control node is in an overload state, all NAS request messages, including the MM request message and the SM request message, are rejected, and the access control is effectively implemented, and the Session Management Congestion Control mechanism is improved.
  • Session Management back-off timer Session Management back-off timer
  • FIG. 1 is a flowchart of a method for controlling a node side of a core network in access control according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method on a user equipment side in an access process according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for access control of mode 1 according to an embodiment of the present invention
  • 4 is a flowchart of a method for access control of mode 2 according to an embodiment of the present invention
  • FIG. 5 is a structural diagram of a control device of a core network according to an embodiment of the present invention.
  • FIG. 6 is a structural diagram of a user equipment according to an embodiment of the present invention.
  • the core network control node after receiving the session management request message, determines that the node is in an overload state, and can reject the request of the user equipment, and sends the session management backoff time information to the user equipment, and no longer needs to determine the session management request. Whether the APN corresponding to the message is congested. That is, in the embodiment of the present invention, when the core network control node is in an overload state, all NAS request messages, including the MM request message and the SM request message, are rejected, and the access control is effectively implemented, and the Session Management Congestion Control mechanism is improved.
  • the overload state of the core network control node is mainly due to the overload state of the core network control node overload, and the load overload of the core network control node may be various possible overload causes such as CPU overload or message queue overload.
  • the method of the core network control node side in the access control in this embodiment is as follows:
  • Step 101 The core network control node receives a session management request message sent by the user equipment.
  • the session management request message includes at least one of the following messages:
  • Step 102 The core network control node sends session management backoff time information to the user equipment when the node is in an overload state.
  • the core network control node may carry the session management backoff time information by using the session management reject message.
  • the message may also carry indication information indicating that the core network control node is overloaded.
  • the indication information may be represented by a reason for rejection, for example, adding a cause value indicating that the SGSN or the MME is overloaded. That is, the indication of the overload of the core network control node is indicated by the value of the extended rejection reason.
  • the priority may be set according to the degree of overload, for example, the higher the overload degree, the higher the priority is set;
  • step 102 after determining that the node is in an overload state, the core network control node determines whether the priority of the session management request message sent by the user equipment is lower than the priority set according to the overload level, and if yes, sends the information to the user equipment.
  • the session management backoff time information otherwise accepts the session management request message.
  • the priority of the degree setting is not lower than the priority set according to the degree of overload.
  • Step 201 The user equipment sends a session management request message.
  • Step 202 The user equipment receives the session management backoff time information sent by the core network control node.
  • Step 203 The user equipment does not send the session management request message until the timer corresponding to the session management backoff time information expires.
  • the step 201 further includes:
  • the user equipment places the priority of the session management request message in the session management request message.
  • the core network control node side and the user equipment side have multiple implementation modes, which are listed below.
  • Manner 1 The core network control node uses the session management backoff time information to indicate that the user equipment does not send a session management request for any access point network APN before the timer corresponding to the session management backoff time information expires; Any APN sends a session management request message.
  • Manner 2 The core network control node is in the overload state of the local node, and all the APNs that are connected to the local node are congested, and the user equipment request is rejected according to the congestion state of the APN; at this time, the user equipment may resend the request for other APNs. However, the core network control node does not need to judge, and directly rejects the request of the user equipment according to the congestion state of the APN.
  • the method for access control of mode 1 in this embodiment is as follows:
  • Step 301 The core network control node pre-determines whether the node is overloaded, and if so, determines that it is in an overload state.
  • Step 301 The user equipment sends a PDN Connectivity Request message. There are multiple types of session management request messages. This example uses the PDN Connectivity Request message as an example.
  • Step 302 The core network control node determines whether the node is in an overload state. If yes, proceed to step 303. Otherwise, the process ends, and the process is not processed according to the prior art.
  • Step 303 The core network control node sets session management backoff time information for the received PDN Connectivity Request message.
  • the core network control node can set the session management backoff time information by referring to factors such as overload level, request reason, and access priority.
  • the core network control node determines the value of the session management backoff time information according to the signaling load status of the node.
  • the core network control node further considers the randomization of the values. That is, the core network control node determines the value of the session management backoff time information in a random manner according to the signaling load status of the node, and in particular, the core network control node randomly takes values within a preset feasible value range. For example, signaling load conditions are divided into light load, heavy load, and overload. Three levels, each level corresponding to a range of values, randomly taking values within the corresponding range of values to determine session management backoff time information.
  • Step 304 The core network control node sends a packet data PDN Connectivity Reject message carrying the session management backoff time information to the user equipment.
  • the message may also carry indication information indicating that the core network control node is overloaded.
  • the core network control node uses the session management backoff time information to indicate that the user equipment may not send a session management request for any access point network APN before the timer corresponding to the session management backoff time information expires.
  • the core network control node After sending the backoff time, the core network control node rejects the received session management request message before the timer corresponding to the backoff time expires.
  • Step 305 The user equipment starts a timer corresponding to the session management backoff time information.
  • the user equipment associates the timer corresponding to the session management backoff time information to the wild card APN, and does not send the session management request message to any APN before the timer corresponding to the session management backoff time information expires.
  • the user equipment associates the timer corresponding to the session management backoff time information to all APNs, and does not send the session management request message to any APN before the timer corresponding to the session management backoff time information expires.
  • Step 306 The user equipment needs to send the PDN Connectivity Request message again.
  • Step 307 The user equipment determines whether the timer expires. If yes, proceed to step 309, otherwise continue to step 308. For example, the user equipment determines whether the timer corresponding to the wild card APN times out, or the user equipment determines whether the timer corresponding to the APN corresponding to the PDN Connectivity Request message times out.
  • Step 308 The user equipment aborts sending a PDN Connectivity Request message.
  • the user equipment suspends sending the session management request message.
  • the user equipment suspends sending the session management request message of the non-Emergency/Priority Service.
  • Step 309 The user equipment sends a PDN Connectivity Request message.
  • the method for access control of mode 2 in this embodiment is as follows:
  • the core network control node pre-determines whether the node is overloaded, and if so, determines that it is in an overload state, and determines that all APNs are in a congested state.
  • Step 401 The user equipment sends a PDN Connectivity Request message.
  • PDN Connectivity Request message There are multiple types of session management request messages. This example uses the PDN Connectivity Request message as an example.
  • Step 402 The core network control node determines whether the APN corresponding to the PDN Connectivity Request message is in a congested state. If yes, proceed to step 403. Otherwise, the process ends, and the process is not processed according to the prior art.
  • Step 403 The core network control node sets session management retreat for the received PDN Connectivity Request message. Avoid time information.
  • the core network control node may set session management backoff time information by referring to factors such as overload level, request reason, and access priority.
  • Step 404 The core network control node sends a PDN Connectivity Reject message carrying the session management backoff time information to the user equipment.
  • the message may also carry indication information indicating that the core network control node is overloaded.
  • the core network control node uses the session management backoff time information to indicate that the user equipment may not send a session management request for any access point network APN before the timer corresponding to the session management backoff time information expires.
  • Step 405 The user equipment starts a timer corresponding to the session management backoff time information. Specifically, the user equipment associates the timer corresponding to the session management backoff time information to the APN corresponding to the session management request message, and does not send the session management request message to the APN before the timer corresponding to the session management backoff time information expires.
  • Step 406 The user equipment needs to send the PDN Connectivity Request message again.
  • Step 407 The user equipment determines whether the timer corresponding to the APN corresponding to the PDN Connectivity Request message times out. If yes, proceed to step 409, otherwise proceed to step 408.
  • the user equipment determines whether the timer corresponding to the wild card APN times out, or the user equipment determines this time.
  • Step 408 The user equipment aborts sending a PDN Connectivity Request message.
  • the user equipment suspends sending the session management request message.
  • the user equipment suspends sending the session management request message of the non-Emergency/Priority Service.
  • Step 409 The user equipment sends a PDN Connectivity Request message.
  • the implementation process of the access control is understood by the above description.
  • the process is mainly implemented by the core network control node and the user equipment.
  • the internal structure and functions of the two devices are introduced below.
  • the core network control node device and the user equipment are also provided in the embodiment of the present invention. Since the principle of solving the problem is similar to the method in the embodiment of the present invention, the implementation of the device may refer to the implementation of the method. , the repetition will not be repeated.
  • the core network control node device in this embodiment includes: a first interface module 501 and a first control module 502.
  • the core network control node device may be specifically an SGSN or an MME.
  • the first interface module 501 is connected to the external device, and is configured to receive and send various messages, such as receiving a session management request message sent by the user equipment.
  • the first control module 502 is configured to: when the core network control node device is in an overload state, instruct the first interface module to send session management backoff time information to the user equipment.
  • the first control module 502 is further configured to set session management backoff time information of the session management layer for the user equipment according to the session management request message.
  • the first control module 502 determines that the core network control node device is in an overload state, it is further configured to instruct the first interface module to send, to the user equipment, indication information indicating that the core network control node is overloaded.
  • the first control module 502 indicates, by using the session management backoff time information, that the user equipment does not send a session management request for any access point network APN before the timer corresponding to the session management backoff time information expires.
  • the first control module 502 is further configured to reject the received session management request message after the timer corresponding to the backoff time expires after the backoff time is sent.
  • the first control module 502 determines whether the core network control node device is overloaded, and if yes, enters an overload state, and determines that all APNs are in a congested state; the first control module 502 determines that the core network control node device is in an overload state, determining When the APN corresponding to the received session management request is in a congested state, the first interface module 501 is instructed to send the session management backoff time information to the user equipment.
  • the first control module 501 determines that the node is in an overload state, and determines that the priority of the session management request message sent by the user equipment is lower than the priority set according to the overload level, and sends a Session Management back-off timer to the user equipment. information.
  • the first control module 501 determines that the node is in an overload state, and determines that the priority of the session management request message sent by the user equipment is not lower than the priority set according to the overload level, and accepts the session management request message.
  • the user equipment in this embodiment includes: a second interface module 601 and a second control module 602.
  • the user equipment can be specifically a user equipment or a mobile terminal (MS).
  • the second interface module 601 is configured to send a session management request message, and receive session management backoff time information sent by the core network control node.
  • the second control module 602 is configured to not send the session management request message until the timer corresponding to the session management backoff time information expires.
  • the control module 602 associates the timer corresponding to the session management backoff time information to the APN corresponding to the session management request message, and does not send the session management request message to the APN before the timer corresponding to the session management backoff time information expires; or
  • the timer corresponding to the session management backoff time information is associated with the wildcard APN, and the session management request message is not sent to any APN before the timer corresponding to the session management backoff time expires; or the session management backoff time is The timer corresponding to the information is associated with all APNs, and the session management request message is not sent to any APN until the timer corresponding to the session management backoff time information expires.
  • the control module 602 does not send the session management request message for the non-Emergency/Priority Service until the timer corresponding to the session management backoff time information expires.
  • the second interface module 601 places the priority of the session management request message in the session management request message.
  • the embodiment of the present invention provides a plurality of specific implementation manners.
  • the core network control node When determining that the node is overloaded, the core network control node directly determines that all APNs are congested.
  • the user equipment When receiving the request of the user equipment, the user equipment may directly reject the user equipment according to the congestion status of the APN. The request no longer needs to be judged according to the APN's judgment mechanism.
  • the core network control node may use the session management backoff time information to indicate that the user equipment does not send the session management request for any APN, which saves the signaling process.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention is in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention appartient au domaine technique des communications. De façon plus spécifique, l'invention se rapporte à un procédé et à un dispositif pour un contrôle d'accès, qui sont destinés à être utilisés en vue d'améliorer un contrôle d'accès. Le procédé selon l'invention comprend les étapes suivantes : un nœud de contrôle de cœur de réseau reçoit un message de demande de gestion de session transmis par un équipement d'utilisateur ; et, quand le nœud de contrôle de cœur de réseau détermine que le nœud se trouve dans un état de surcharge, il transmet à l'équipement d'utilisateur un message de retardement de la procédure de gestion de session. La solution technique de la présente invention permet un contrôle d'accès effectif et améliore, par là même, le mécanisme de contrôle de congestion dans le contexte de la gestion de session.
PCT/CN2012/071257 2011-02-18 2012-02-17 Procédé et dispositif pour un contrôle d'accès WO2012110002A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201110040450XA CN102098759A (zh) 2011-02-18 2011-02-18 一种接入控制的方法及装置
CN201110040450.X 2011-02-18
CN201110111808.3A CN102186224B (zh) 2011-02-18 2011-04-29 一种接入控制的方法及装置
CN201110111808.3 2011-04-29

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CN110351872B (zh) * 2018-04-02 2024-04-30 夏普株式会社 接入控制方法及用户设备

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