WO2013013531A1 - Procédé et système d'interdiction d'accès et élément de réseau côté réseau - Google Patents

Procédé et système d'interdiction d'accès et élément de réseau côté réseau Download PDF

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Publication number
WO2013013531A1
WO2013013531A1 PCT/CN2012/075967 CN2012075967W WO2013013531A1 WO 2013013531 A1 WO2013013531 A1 WO 2013013531A1 CN 2012075967 W CN2012075967 W CN 2012075967W WO 2013013531 A1 WO2013013531 A1 WO 2013013531A1
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Prior art keywords
eab
information
network
type
access
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PCT/CN2012/075967
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English (en)
Chinese (zh)
Inventor
邓云
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中兴通讯股份有限公司
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Publication of WO2013013531A1 publication Critical patent/WO2013013531A1/fr

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    • 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 an EAB-based access control technology in wireless communication, and in particular, to a method and system for access control, and a network side network element.
  • a user equipment When a user equipment (UE, User Equipment, also called a terminal) accesses the network, it needs to perform access control on it to determine whether the UE can initiate a service request, and avoid causing overload on the network side, such as random access overload or signaling overload.
  • UMTS Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • user equipment can be divided into 16 access levels (AC, Access Class), where AC 0 ⁇ 9 belongs to Ordinary level, randomly assigned to the UE; AC 10 indicates emergency call (will not be configured to the terminal); AC 11 is used for network operation; AC 12 is for security service; AC 13 is for public service category (such as water and gas supplier); AC 14 Indicates emergency services; AC 15 indicates operator staff.
  • a terminal can be configured as one of AC 0 ⁇ 9 and one or more of AC 11 ⁇ 15. These configuration information is stored in the User Identification Card (USIM, Universal Subscriber Identity Module).
  • USIM User Identification Card
  • the network side of the UMTS broadcasts system messages, including the Access Class Barred (ACB) parameter.
  • ACB Access Class Barred
  • the ACB is configured as an enumeration type, and the type includes barred (barred). And not allowed (not barred)habput. If the UE needs to initiate a service request, it is first necessary to check whether the ACB parameter broadcasted by the accessed cell is barred (the access level to which it belongs), and the service request cannot be initiated; If it is forbidden, you can initiate a business request.
  • the network side of the Long Term Evolution system also broadcasts ACB parameters.
  • the network The network side access scale factor (ac-BarringFactor ) is used to control the probability of user equipment accessing the network.
  • the UE When the UE needs to initiate a service request, the UE randomly generates a uniformly distributed number (RAND) between 0 and 1. If the RAND is lower than the access scale factor, the UE may initiate a service request; otherwise, the UE cannot initiate a service request.
  • RAND uniformly distributed number
  • EAB Extended Access Barring
  • the corresponding extended access control parameters may be separately set for the roaming characteristics of the user equipment.
  • the network side transmits the EAB parameters through a common channel, such as a system message.
  • the roaming characteristics of the current user equipment can be divided into the following three types:
  • Type A (Category A or 1): All user equipments for EAB;
  • Type B (or Type 2): User equipment for EAB that is not in the Local Public Land Mobile Network (HPLMN) and Equivalent Home Public Land Mobile Network (EHPLMN) ;
  • HPLMN Local Public Land Mobile Network
  • EHPLMN Equivalent Home Public Land Mobile Network
  • Type C (or Type 3): User equipment for EAB that is not in HPLMN, EHPLMN, and Preferred Public Land Mobile Network (Preferred PLMN).
  • PLMN Preferred Public Land Mobile Network
  • the USIM card of the UE stores the identification information of the subscribed local public land mobile network, the equivalent local public land mobile network, and the preferential public land mobile network, and the UE selects the network (Select PLMN) when accessing the network. Based on the selected PLMN identity, and the HPLMN, EHPLMN, and Preferred PLMN in the USIM card, the UE can determine the type to which it belongs. When a UE that is applicable to a device needs to initiate a service, it needs to be based on its own type. The parameter determines whether it can initiate random access immediately and whether it can initiate a service request.
  • the above access technology has a problem in that, according to the existing protocol, the network side cannot learn the load information of different types of UEs, and thus cannot correctly set the EAB parameters. Summary of the invention
  • the main purpose of the present invention is to provide a method and system for access control, and a network side network element, which can implement access control of the UE according to the EAB type of the UE, and avoid the UE from being too connected. As a result, network services cannot be carried out normally.
  • a method of access control comprising:
  • the network side obtains type information about the EAB of the UE accessing the network through the core network element, and implements access control according to the type information about the EAB of the UE.
  • the performing access control according to the type information about the EAB of the UE is: the network side measures a total amount of resources used by all UEs of the EAB type of the UE, and sets an EAB parameter of the UE of the type; or according to The UE's type information about the EAB performs access control on the UE.
  • the network side is a radio network controller RNC, and the core network element is an MSC or an SGSN; for LTE, the network side is an evolved base station, and the core network element is an MME.
  • the type information about the EAB of the UE that accesses the network through the core network element by the network side is:
  • the MSC or the SGSN sends the subscription data of the UE to the RNC through the Iu interface signaling, where the RNC according to the subscription data of the UE and the current access of the UE
  • the access network information to which the cell belongs determines the type of the EAB of the UE
  • the MME sends the subscription data of the UE to the evolved base station by using the S1 interface signaling, where the evolved base station determines, according to the subscription data of the UE and the access network information that the current access cell of the UE belongs to.
  • the type of EAB of the UE is the EAB of the UE.
  • the method further includes:
  • type information about the EAB of the UE from the home subscriber server HSS; or acquiring subscription data of the UE, and according to the access network information that the UE currently accesses the cell Determining information about the EAB type of the UE.
  • the subscription data of the UE includes: a local public land mobile network HPLMN information of the UE;
  • HPLMN information and equivalent local public land mobile network EHPLMN information; or include: HPLMN information and prioritized public land mobile network information;
  • HPLMN information Or include: HPLMN information, EHPLMN information, and prioritized public land mobile network information.
  • the type of EAB of the UE includes at least one of the following types:
  • UEs for EAB not in HPLMN, EHPLMN, and preferred public land mobile networks.
  • An access control system includes a network side and a core network element, where
  • the network side is configured to acquire type information about the EAB of the UE accessing the network through the core network element, and implement access control according to the type information about the EAB of the UE.
  • the network side is further configured to: measure a total amount of resources used by all UEs of the EAB type of the UE, set an EAB parameter of the UE of the type; or perform access control according to the EAB type of the UE.
  • the network side is a radio network controller RNC, and the core network element is an MSC or an SGSN; for LTE, the network side is an evolved base station, and the core network element is an MME.
  • the MSC or the SGSN is further configured to send, by using the Iu interface signaling, the EAB type information of the UE to the RNC;
  • the MSC or the SGSN is further configured to send the subscription data of the UE to the RNC by using the Iu interface signaling; the RNC is further configured to: according to the subscription data of the UE and the current connection of the UE The access network information to which the inbound cell belongs determines the type of the EAB of the UE;
  • the MME is further configured to send, by using the S1 interface signaling, the EAB type information of the UE to the evolved base station;
  • the MME is further configured to: send the subscription data of the UE to the evolved base station by using the S1 interface signaling; the evolved base station is further configured to: according to the subscription data of the UE, and the current access cell of the UE The associated access network information determines the type of EAB for the UE.
  • the system further comprises an HSS;
  • the MSC or the SGSN or the MME is further configured to: obtain the type information about the EAB of the UE from the HSS; or acquire the subscription data of the UE, and according to the current access cell of the UE Entering network information, determining the EAB type letter of the UE
  • the subscription data of the UE includes: a local public land mobile network HPLMN information of the UE;
  • HPLMN information and equivalent local public land mobile network EHPLMN information; or include: HPLMN information and prioritized public land mobile network information;
  • HPLMN information Or include: HPLMN information, EHPLMN information, and prioritized public land mobile network information.
  • the type of EAB of the UE includes at least one of the following types:
  • UEs for EAB not in HPLMN, EHPLMN, and preferred public land mobile networks.
  • a network side network element including an acquiring unit and an implementation unit;
  • An acquiring unit configured to acquire, by using a core network element, a type information about an EAB of a UE accessing the network;
  • an implementation unit configured to implement access control according to type information about the EAB of the UE.
  • the implementing unit is further configured to: measure a total amount of resources used by all UEs of the EAB type of the UE, set an EAB parameter of the UE of the type, or perform access control according to a type of the UE related to the EAB.
  • the network side network element is a radio network controller RNC, and the core network element is an MSC or an SGSN; for LTE, the network side network element is an evolved base station, and the core network element is MME.
  • the acquiring unit directly acquires the EAB type information of the UE by using the Iu interface signaling; or the acquiring unit acquires the subscription data of the UE by using the Iu interface signaling, and according to the UE The subscription data and the access network information to which the UE currently accesses the cell determine the type of the EAB of the UE;
  • the acquiring unit directly acquires the EAB type information of the UE by using the S1 interface signaling; or the acquiring unit acquires the subscription data of the UE by using the S1 interface signaling, and according to the subscription of the UE The data and the access network information to which the UE currently accesses the cell determine the type of the EAB for the UE.
  • the network side learns the type information of the UE about the EAB through the core network element, and the network side obtains the total amount of resources used by the different types of UEs by using the measurement, and further can obtain corresponding information for different types of UEs to be accessed by the network.
  • the access control policy sets reasonable extension access control parameters, and implements different access control for different types of UEs to access the network.
  • the invention solves the problem that the network side in the existing system cannot know the amount of resources used by different types of UEs that have accessed the network, and cannot take reasonable access control to the UEs that access the network.
  • the present invention improves the service quality of the access terminal user by ensuring that the communication system does not have network congestion and ensures the service quality of the terminal when the number of terminal accesses is too large.
  • FIG. 1 is a schematic diagram of a type to which a UE belongs
  • FIG. 2 is a flowchart of UE access based on access control according to an embodiment of the present invention
  • FIG. 3 is a flowchart of UE access based on access control according to Embodiment 2 of the present invention.
  • FIG. 5 is a schematic structural diagram of a network side network element of the present invention. detailed description
  • the network side learns about the EAB type information to which the UE accessing the network belongs, thereby obtaining the total amount of resources used by different types of UEs by measurement, and further, for different types of UEs to be accessed by the network. Take access control policies, set reasonable extended access control parameters, and implement different access control for different types of UEs that access the network.
  • This embodiment describes a method for configuring an extended access control parameter on the network side in an LTE system.
  • UE1 and UE2 reside in the cell 1 under the jurisdiction of the base station 1, and are in an idle state. Both UE1 and UE2 are configured to be suitable for UEs.
  • the USIM card of UE1 indicates that the access category of the UE is 2, that is, the Access Class is 2.
  • the USLM card of UE1 and UE2 also holds the HPLMN identity, and may also include the EHPLMN identity and the preferred public land mobile network identity (preferred PLMN).
  • the HPLMN saved in the USIM card of UE1 is PLMN1
  • EHPLMN is PLMN2 and PLMN3
  • preferred PLMN is PLMN4.
  • the PLMN broadcast in the system message of cell 1 is PLMN4.
  • the HPLMN saved in the USIM card of UE2 is PLMN2, and the EHPLMN is PLMN4.
  • the Preferred PLMN is not set.
  • Type A All user equipments for EAB;
  • Type B User equipment for EAB that is not in the Local Public Land Mobile Network (HPLMN) and the equivalent Local Public Land Mobile Network (EHPLMN);
  • Type C User equipment for EAB, not in HPLMN, EHPLMN, and Preferred Public Land Mobile Network (Preferred PLMN).
  • Preferred PLMN Preferred Public Land Mobile Network
  • Figure 1 shows the affiliation of these three types. It can be seen that the range of Category A is larger than the range of Category B; and the range of Category B is greater than or equal to the range of Category C. It should be noted that Category A, B, and C are used here to indicate different types. Category 1, 2, and 3 can also be used to indicate different types. In the following embodiments of the present invention, the corresponding access control is also performed based on the above three types of UEs, which are not described in the following embodiments.
  • Cell 1 in which UE1 resides is PLMN4, neither belongs to HPLMN (PLMN1) of UE1, nor belongs to EHPLMN (PLMN2 and PLMN3), but belongs to Preferred PLMN of UE1; And the UE is configured to apply EAB.
  • UE1 satisfies both the classification of Category A and the classification of Category B. From the most accurate description of the characteristics of UE1 (or the most matching), UE1 belongs to Category B.
  • UE2 belongs to Category A because it does not satisfy the conditions of Category B and C.
  • the UE1 When the UE1 needs to initiate a service, it needs to determine whether to allow the access network to initiate a service request according to the EAB parameter or the ACB parameter of the cell 1 broadcast (through the system message transmission). At this time, since the load of the base station 1 is low, and there are sufficient resources to satisfy the access request of the new user, the base station 1 does not configure the EAB parameter (that is, the EAB parameter is not set in the system message); the UE1 finds that the EAB parameter is not set in the system message. ⁇ Implementing the access decision with the ACB parameter, if the decision result is not barred, the UE1 can initiate random access, and send an RRC connection request to the network side when the random access is successful; if the decision result is not allowed (barred) , then random access cannot be initiated immediately, and it is necessary to wait for a period of time to implement the access decision again.
  • the EAB parameter that is, the EAB parameter is not set in the system message
  • the UE1 finds that the EAB parameter is not
  • the 2 is a flow chart of accessing a UE based on access control according to an embodiment of the present invention. As shown in FIG. 2, in this embodiment, it is assumed that the UE 1 implements an access decision according to an ACB parameter, and the UE1 is allowed to access according to the system.
  • the random access resource in the message initiates random access and establishes an RRC connection.
  • the access procedure of UE1 mainly includes the following steps:
  • Step 201 The UE1 sends an RRC connection request to the base station 1, where the identity information of the UE1 is carried in the connection request.
  • Step 202 After receiving the RRC connection request, the base station 1 allocates radio resources to the UE1, and sends an RRC connection setup signaling (RRC Connection Setup) to the UE1.
  • RRC Connection Setup RRC Connection Setup
  • Step 203 After receiving the RRC connection setup signaling, the UE1 applies the parameter configuration thereof to return the RRC Connection Setup Complete signaling to the base station 1.
  • the signaling also includes UE1's service request information (belonging to the non-access stratum).
  • Step 204 the base station 1 to the mobility management entity (MME, Mobility Management Entity) sends initial user equipment information (Initial UE Message), which includes identification information of the user equipment, and service request information (belonging to the non-access stratum).
  • MME Mobility Management Entity
  • Step 205 After receiving the Initial UE message, the MME authenticates the UE1, and after the authentication succeeds, sends an Initial Context Setup Request to the base station 1, where the radio access bearer (RAB, Radio Access Bearer) is included. Configuration parameters, security configuration parameters, and type information to which UE1 belongs.
  • RAB Radio Access Bearer
  • the MME when the MME authenticates the UE, the MME obtains the subscription information of the UE from the home network server (HSS, Home Subscriber Server), and determines the type of the UE according to the network selected by the UE, that is, It is determined that the UE is the above Category B.
  • the MME transmits the type information of the UE1 to the base station 1 by using the initial context setup request. In the specific implementation, the MME needs to add a cell indicating the type information of the UE1 to the initial context setup request message.
  • the base station 1 After receiving the initial context setup request, the base station 1 learns the Category to which the UE1 belongs, and can measure the total amount of resources used by all the UEs of the Category B, including the total amount of radio resources and/or the total amount of transmission resources, where the total amount of radio resources can be It is represented by the total physical resource block (Total PRB usage).
  • the LTE system uses a physical resource block (PRB) to represent radio resources, and the base station 1 can count the total amount of physical resource blocks used by the UEs of the Category B, or the ratio (compared to the total physical resource blocks).
  • the total amount of transmission resources refers to the rate of data transmitted by the UE of Category B.
  • the base station 1 can statistically obtain the rate of data transmitted by the UE of Category B within a certain period of time.
  • Step 206 The base station 1 sends a Security Mode Command to the UE1 to configure an encryption algorithm and an integrity protection algorithm for the UE1.
  • Step 207 The UE1 applies the encryption algorithm and the integrity protection algorithm therein to return the security mode completion signaling (Security Mode Complete) to the base station 1.
  • Step 208 The base station 1 sends an RRC connection reconfiguration signaling to the UE1 (RRC Connection Reconfiguration), which includes configuration parameters of the Data Radio Bearer (DRB) and measurement configuration parameters.
  • RRC Connection Reconfiguration which includes configuration parameters of the Data Radio Bearer (DRB) and measurement configuration parameters.
  • DRB Data Radio Bearer
  • the data radio bearer is used for transmitting data, and corresponds to the radio access bearer in step 204 above.
  • Step 209 The UE1 applies the configuration parameters therein, and returns an RRC Connection Reconfiguration Complete (RRC Connection Reconfiguration Complete) to the base station 1.
  • RRC Connection Reconfiguration Complete RRC Connection Reconfiguration Complete
  • the base station 1 has established a bearer for data transmission for the UE1, and the UE1 can carry out services.
  • the base station 1 After step 205, the base station 1 always measures the total amount of resources used by the UE of Category B, and the measured value of the total amount of resources changes dynamically. As the number of UEs accessing the cell 1 is gradually increased, the total amount of resources used by the cell 1 is gradually increased.
  • the base station 1 can obtain the category of the access UE by using the initial context setup request signaling received by the UE when establishing the radio bearer, and then measure other The total amount of resources used by the Category UE. Since the total number of resources of the cell 1 is limited, the base station 1 needs to implement access control when the total amount of resources used by the UE reaches a predetermined threshold.
  • the predetermined threshold may be configured by the operator through a background server.
  • the base station 1 sets different EAB parameters for different categories, such as EAB 1 for UEs of Category A, EAB2 for UEs of Category B, and Category for UEs of Category B; UE of C, set EAB3.
  • Base station 1 broadcasts these EAB parameters in the system message of cell 1.
  • UE2 needs to access the network because of service requirements.
  • UE2 obtains the EAB parameters corresponding to different types of UEs through the system message. Since UE2 belongs to Category A, UE2 needs to implement the access decision according to the EAB parameter (EAB1) corresponding to Category A. If the result of the decision is allowed, UE2 may initiate random access, establish an RRC connection in cell 1, and then establish a data radio bearer; if the decision result is not allowed, UE2 is not allowed to initiate random access, and needs to wait for a period of time to implement again. Into the decision, or need to wait for the cell system message of cell 1 to change the EAB parameter for Category A and then implement the access decision again.
  • EAB1 EAB parameter
  • the MME will authenticate it and establish it in the initial context.
  • the request carries the type information to which the UE2 belongs.
  • the base station 1 After the base station 1 obtains the type information of the UE2, the base station 1 needs to make a decision on whether to allow the user equipment to access the network according to the load status at this time, where the base station 1 makes the permission.
  • the base station 2 After the decision, the base station 2 needs to measure the total amount of resources used by the UE2, and then obtain the total amount of resources used by all the UEs of the Category A.
  • the base station 1 implements access control according to the total amount of resources, and sets the EAB parameters.
  • the base station measures the total amount of resources used by the type of UE, and then sets the EAB parameter accordingly.
  • the MME notifies the base station of the type information to which the UE belongs by using the initial context setup request, and the MME may also carry the signed local public land mobile network (HPLMN) identifier and the equivalent local public land in the initial context setup request.
  • HPLMN signed local public land mobile network
  • the mobile network (EHPLMN) identifies and prioritizes the Preferred PLMN identity.
  • this also needs to be represented by adding a corresponding cell to the initial context setup request message; since the base station knows the network selected by the UE Therefore, after receiving the RRC signaling of the local public land mobile network identifier, the equivalent local public land mobile network identifier, and the priority public land mobile network identifier that the UE subscribes to, the base station can determine the type to which the UE belongs, and thus can measure different types. Type the total amount of resources used by the UE, and then set the EAB parameters accordingly.
  • the base station 1 when the UE1 is initially connected to the network, the base station 1 is not configured with the EAB parameter, and the base station 1 can also configure the loose EAB parameters in the scenario with a low load, if the EAB parameter is represented by the access scale factor, The base station 1 can set an EAB parameter close to 1, so that most user equipment can be connected to the network. As the number of UEs accessing the network increases, the base station 1 can adjust the EAB parameters such as EAB parameters with smaller configuration values, so that the access of some UEs can be restricted, thereby achieving the purpose of controlling the load.
  • This embodiment describes a method of configuring an extended access control parameter on the network side in a universal mobile communication system.
  • the UE3 and the UE4 are in the cell 2 under the control of the base station 2, and are in an idle state, and the base station 2 is under the jurisdiction of a Radio Network Controller (RNC).
  • RNC Radio Network Controller
  • Both UE3 and UE4 are configured as UEs to which EAB is applicable.
  • the USIM card of UE3 indicates that the access category of the UE is 4, that is, the Access Class is 4.
  • the USLM card of UE3 and UE4 also holds the HPLMN identity, and may also include the EHPLMN identity and the preferred public land mobile network identity (preferred PLMN).
  • the HPLMN stored in the USIM card of UE3 is PLMN1, EHPLMN is PLMN2 and PLMN3, and preferred PLMN is PLMN4.
  • the HPLMN saved in the USIM card of UE4 is PLMN2, and the EHPLMN is PLMN4, and the Preferred PLMN is not set.
  • the PLMN broadcasted in the system message of the cell 2 is the PLMN1, corresponding to the PLMN
  • the UE3 is the UE of the Category A
  • the UE4 is the UE of the Category C.
  • the UE3 needs to initiate a service, and the UE3 needs to determine whether to allow the access network to initiate a service request according to the EAB parameter or the ACB parameter of the cell 2 broadcast (through the system message transmission).
  • the base station 3 does not configure the EAB parameter (that is, the EAB parameter is not set in the system message); the UE3 finds that the EAB parameter is not set in the system message.
  • the access decision is implemented by using the ACB parameter.
  • the UE3 can initiate random access, and after the random access succeeds, send a service request to the network side; if the decision result is not allowed (barred) , then random access cannot be initiated immediately, and it is necessary to wait for a period of time to implement the access decision again.
  • FIG. 3 is a flowchart of accessing a UE based on access control according to Embodiment 2 of the present invention.
  • the result of performing an access decision by the UE3 according to the ACB parameter is allowed, and the UE3 is based on the system message.
  • Random access resources, initiate random access, establish an RRC connection, and the access process of UE3 mainly includes the following steps:
  • Step 301 The UE3 sends an RRC connection request to the RNC, where the connection request carries the identifier information of the UE3.
  • Step 302 After receiving the RRC connection request, the RNC allocates radio resources to the UE3. UE3 sends an RRC Connection Setup signal (RRC Connection Setup).
  • RRC Connection Setup RRC Connection Setup
  • Step 303 After receiving the RRC connection setup signaling, the UE3 applies the parameter configuration thereof to return an RRC Connection Setup Complete signaling to the RNC.
  • Step 304 The UE3 sends an Initial Direct Transfer (IC) signaling to the RNC, where the signaling includes the service request information of the UE3.
  • IC Initial Direct Transfer
  • Step 305 The RNC sends an initial UE message (initial UE message) to the core network, where the service request of the UE3 is included.
  • the core network is divided into a CS domain and a PS domain.
  • the core network element of the CS domain is a Mobile Switching Center (MSC). If the UE3 initiates a service request of the CS domain, the RNC sends a service to the MSC. request.
  • the core network element of the PS domain is a Serving GPRS Support Node (SGSN). If the UE3 initiates a service request of the PS domain, the RNC sends a service request to the SGSN.
  • MSC Mobile Switching Center
  • Step 306 After receiving the service request, the core network authenticates the UE3, and after the authentication succeeds, sends a Radio Access Bearer Assignment Request (RR) to the RNC, where the configuration parameters of the radio access bearer are included. Type information to which UE3 belongs.
  • RR Radio Access Bearer Assignment Request
  • the core network element home server (HSS, Home Subscriber Server) obtains the subscription information of the UE, and determines the type of the UE3 according to the network selected by the UE3. That is, Category A as described above.
  • the core network sends the type information to which the UE3 belongs to the RNC through the radio access bearer assignment request. This requires adding a cell in the signaling to carry the type information to which the UE3 belongs.
  • the manner in which the base station obtains the type information of the UE is in the form of two types of representations, and the type of the radio access bearer assignment request sent by the core network element to the network side (in this embodiment, the RNC) directly carries the type information of the UE.
  • the information of Category A in this example is that the core network element sends the network information (UE subscription data) signed by the UE to the network side, such as indicating the HPLMN of the UE, possibly including the EHPLMN, and The PLMN, determined by the RNC itself, the type of UE3 is Category A.
  • the UE subscription data EHPLMN and the preferred public land mobile network are optional.
  • the RNC can measure the total amount of resources used by the UEs of all Category A, including the total amount of radio resources and/or the total amount of transmission resources, where the total amount of radio resources can be represented by spreading code resources.
  • the RNC can count the total amount of spreading code resources used by the UEs that obtain Category A, or the ratio (compared to the total spreading code resources).
  • the total amount of transmission resources refers to the rate of data transmitted by the UE of Category A.
  • the RNC can obtain the rate of data transmitted by the UE of Category A within a certain period of time.
  • the RNC obtains the network information subscribed by the UE through the radio access bearer assignment request, the RNC needs to determine the type to which the UE belongs according to the network selected by the UE, and then measure the total amount of resources used by the Category A UE.
  • step 306 there is also a process of configuring a security mode, which is to configure an encryption algorithm and an integrity protection algorithm for UE3.
  • Step 307 The RNC sends a Radio Bearer Setup (Polar Bearer Setup) to the UE3, where the configuration parameters of the Data Radio Bearer (DRB) are included.
  • the data radio bearer is used for transmitting data, and corresponds to the radio access bearer in step 306 above.
  • Step 308 The UE3 applies the configuration parameters therein, and returns a radio bearer setup complete (Radio Bearer Setup Complete) to the RNC.
  • a radio bearer setup complete Radio Bearer Setup Complete
  • the RNC has established a bearer for data transmission for UE3, and UE3 can carry out services.
  • the RNC will always measure the total amount of resources used by the UE of the Category A, and the value will change dynamically. As the number of UEs accessing the cell 2 increases, the total amount of resources used by the cell 2 is gradually increased.
  • the RNC can obtain the access UE's Category through the core network, and then measure the total resources used by other Category UEs. Since the total amount of resources of the cell 1 is limited, the RNC needs to implement access control when the total amount of resources used by the UE reaches a predetermined threshold.
  • the predetermined threshold may be configured by an operator through a background server.
  • the RNC sets different EAB parameters for different categories. For example, for UE of Category A, set EAB1; for UE of Category B, set EAB2; for UE of Category C, set EAB3.
  • the RNC broadcasts these EAB parameters in the system message of cell 2.
  • UE4 needs to access the network because of service requirements.
  • UE4 obtains the EAB parameters corresponding to different types of UEs through the system message. Since UE4 belongs to Category C, UE4 needs to implement the access decision according to the EAB parameter (EAB3) corresponding to Category C. If the result of the decision is allowed, UE4 may initiate random access, establish an RRC connection in cell 2, and then establish a data radio bearer; if the decision result is not allowed, UE4 is not allowed to initiate random access, and needs to wait for a period of time to implement the access again. Into the decision, or need to wait for the cell system message of cell 4 to change the EAB parameter for Category C and then implement the access decision again.
  • EAB3 EAB parameter
  • the RNC may use the radio access bearer assignment request sent by the core network to learn the type information of the UE. After the RNC obtains the type information of the UE4, the RNC measures the total amount of resources used by the UE4, and then counts the statistics. Obtain the total amount of resources used by all the UEs of Category C. The RNC implements access control according to the total amount of resources and sets the EAB parameters.
  • the UE 5 resides in the cell 3 under the jurisdiction of the base station 3 and is in an idle state.
  • UE5 is configured as a UE for EAB.
  • the HPLMN stored in the USIM card of UE5 is PLMN1, EHPLMN is PLMN2, and preferred PLMN is PLMN3.
  • the PLMN of cell 3 is PLMN3, and UE5 belongs to Category B at this time.
  • the UE 5 needs to initiate a service, and the UE 5 needs to determine whether to allow the access network to initiate a service request according to the EAB parameter or the ACB parameter of the cell 3 broadcast (through system message transmission).
  • the system message of the cell 3 includes the EAB parameter; the UE5 uses the EAB parameter to implement the access decision, and if the decision result is not barred, the UE5 needs to implement the access decision according to the ACB parameter, only when implemented according to the ACB parameter.
  • the random access can be initiated, and when the random access is successful, the RRC connection request is sent to the network side; if the UE5 is based on the EAB or ACB parameters The result of the access decision is not barred, and UE5 cannot initiate random access immediately, and it needs to wait for a period of time to implement the access decision again.
  • FIG. 4 is a flowchart of a UE access control based on access control according to Embodiment 3 of the present invention.
  • the UE 5 implements an access decision according to the EAB and ACB parameters, and the UE5 is based on the system.
  • the random access resource in the message initiates a random access, and the access procedure of the UE5 is:
  • Step 402 After receiving the RRC connection request, the base station 3 allocates radio resources to the UE5, and sends an RRC connection setup signaling to the UE5.
  • Step 403 After receiving the RRC connection setup signaling, the UE5 applies the parameter configuration thereof to return the RRC connection setup complete signaling to the base station 3.
  • the signaling also includes the service request information of UE5 (belonging to the non-access stratum).
  • Step 404 The base station 3 sends the initial user equipment information to the mobility management entity, where the user equipment identification information and the service request information (belonging to the non-access stratum) are included.
  • Step 405 After receiving the MME, the MME performs authentication on the UE5, and after the authentication succeeds, sends an Initial Context Setup Request to the base station 3, where the radio access bearer (RAB) is configured. Parameters, parameters of the security configuration, and type information of the UE5.
  • RAB radio access bearer
  • the MME when the MME authenticates the UE5, it obtains the subscription information of the UE from the home network element of the core network element, and determines the type to which the UE5 belongs according to the network selected by the UE5, that is, the Category B described above. The type information to which the UE 5 belongs is then transmitted to the base station 3 through the initial context setup request signaling.
  • Step 406 After receiving the initial context setup request, the base station 3 learns the type information to which the UE 5 belongs. At this time, since the number of user equipments that access the cell 3 is large, and the load of the cell 3 is large, the base station 3 makes a decision that the UE 5 is not allowed to establish a radio access bearer, and the base station 3 sends the MME to the MME.
  • the initial Context Setup Failure signaling is sent, including the reason for the failure, such as insufficient radio resources, or denying access to the user equipment of this type.
  • Step 407 The base station 3 sends an RRC connection release signaling to the UE5, and releases the established RRC connection.
  • the signaling includes a release reason such as insufficient radio resources, or denying access to the user equipment of this type.
  • UE5 receives the release signaling and returns to the idle state. At the same time, the RRC connection release is reported to the non-access stratum of UE5, and the reason for the release is reported.
  • the present invention describes a system for access control, including a network side and a core network element, wherein the network side is configured to acquire, by the core network element, information about the EAB type of the UE accessing the network, and according to the UE The access control is implemented regarding the type information of the EAB.
  • the network side is further configured to: measure a total amount of resources used by all UEs of the EAB type of the UE, set an EAB parameter of the UE of the type; or perform access control according to an EAB type of the UE.
  • the performing access control according to the EAB type of the UE means that, when the UE is allowed to access, the network side configures a radio resource for the UE, and establishes a radio bearer for the UE; When accessing, the network side refuses to establish a radio bearer for the UE.
  • the network side is a radio network controller RNC, and the core network element is an MSC or an SGSN; for LTE, the network side is an evolved base station, and the core network element is an MME.
  • the MSC or the SGSN is further configured to send, by using the Iu interface signaling, the EAB type information of the UE to the RNC;
  • the MSC or the SGSN is further configured to send the subscription data of the UE to the RNC by using the Iu interface signaling; the RNC is further configured to: according to the subscription data of the UE and the current connection of the UE
  • the access network information to which the inbound cell belongs determines the type of the EAB of the UE; For LTE systems,
  • the MME is further configured to send, by using the S1 interface signaling, the EAB type information of the UE to the evolved base station;
  • the MME is further configured to: send the subscription data of the UE to the evolved base station by using the S1 interface signaling; the evolved base station is further configured to: according to the subscription data of the UE, and the current access cell of the UE The associated access network information determines the type of EAB for the UE.
  • the system further includes an HSS;
  • the MSC or the SGSN or the MME is further configured to: obtain the type information about the EAB of the UE from the HSS; or acquire the subscription data of the UE, and according to the current access cell of the UE Entering network information, determining information about the EAB type of the UE.
  • the subscription data of the UE includes: a local public land mobile network HPLMN information of the UE;
  • HPLMN information and equivalent local public land mobile network EHPLMN information; or include: HPLMN information and prioritized public land mobile network information;
  • HPLMN information Or include: HPLMN information, EHPLMN information, and prioritized public land mobile network information.
  • the type of the EAB of the UE includes at least one of the following types:
  • UEs for EAB not in HPLMN, EHPLMN, and preferred public land mobile networks.
  • the network side network element of the present invention includes an obtaining unit 50 and an implementing unit 51.
  • the obtaining unit 50 is configured to acquire, by using a core network element, information about type EAB of the UE accessing the network;
  • the implementing unit 51 is configured to implement access control according to the type information about the EAB of the UE.
  • the above implementation unit 50 is further configured to measure all the UEs related to the EAB type
  • the network side network element is a radio network controller RNC, and the core network element is an MSC or an SGSN.
  • the network side network element is an evolved base station, and the core network element is an MME.
  • the obtaining unit 50 directly acquires the EAB type information of the UE by using the Iu interface signaling; or the acquiring unit 50 acquires the subscription data of the UE by using the Iu interface signaling, and according to the subscription data of the UE. And determining, by the access network information that the UE currently accesses the cell, the type of the EAB of the UE;
  • the acquiring unit 50 directly acquires information about the EAB type of the UE by using the S1 interface signaling.
  • the acquiring unit 50 acquires the subscription data of the UE by using the S1 interface signaling, and determines the type of the EAB of the UE according to the subscription data of the UE and the access network information that the current access cell of the UE belongs to. .
  • the present invention ensures that the communication system does not have network congestion and ensures the service quality of the terminal when the number of terminal accesses is too large, and improves the user experience of the access terminal user by performing access control on the terminals of different EAB types.

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

Abstract

La présente invention concerne un procédé d'interdiction d'accès. Le procédé consiste à : acquérir par le côté réseau, par l'intermédiaire d'un élément de réseau du réseau central, des informations de type sur l'interdiction d'accès étendu (EAB) de l'équipement utilisateur (UE) accédant à un réseau, et mettre en œuvre l'interdiction d'accès selon les informations de type sur l'EAB de l'UE. L'invention concerne en outre un système de mise en œuvre du procédé d'interdiction d'accès susmentionné, et un élément de réseau côté réseau. La présente invention permet ainsi de s'assurer qu'aucun encombrement du réseau ne se produira dans un système de communication en réalisant une interdiction d'accès sur des terminaux avec des types d'EAB pertinents différents, ce qui permet ainsi de garantir la qualité de service quand un trop grand nombre de terminaux tentent d'accéder au réseau, et d'améliorer également l'expérience utilisateur des utilisateurs des terminaux qui tentent d'accéder au réseau.
PCT/CN2012/075967 2011-07-26 2012-05-23 Procédé et système d'interdiction d'accès et élément de réseau côté réseau WO2013013531A1 (fr)

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