CN102300285A

CN102300285A - Access control method and equipment

Info

Publication number: CN102300285A
Application number: CN201110300120XA
Authority: CN
Inventors: 陈东; 张英
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2011-09-29
Filing date: 2011-09-29
Publication date: 2011-12-28
Anticipated expiration: 2031-09-29
Also published as: CN102300285B

Abstract

The embodiment of the invention discloses an access control method and access control equipment, and relates to the technical field of wireless communication. The method and the equipment are used for solving the problem that a terminal cannot perform access control because access class barring (ACB) parameter configuration of a conventional type has no ACB parameter corresponding to a current radio resource control (RRC) connection establishing reason. In the method, when the terminal does not store the ACB parameter corresponding to the current RRC connection establishing reason, the terminal selects a type of the ACB parameter used for access control from the stored ACB parameters, or a network side transmits the ACB parameter of the conventional type or the ACB parameter of a newly defined type to the terminal; and the terminal performs the access control by using the ACB parameter of the newly defined type when the current RRC connection establishing reason does not belong to the RRC connection establishing reason corresponding to the ACB parameter of each existing type. By adopting the method, the problem can be solved.

Description

Access control method and device

Technical Field

The present invention relates to the field of wireless communications, and in particular, to an access control method and device.

Background

At present, no matter a Universal Mobile Telecommunications System (UMTS) or a Long Term Evolution (LTE) system, an access control mechanism is introduced at a Radio Access Network (RAN) side, and when a large number of terminals are simultaneously accessed to cause that RAN access resources are insufficient and congestion occurs or the network considers that some terminals need to be prohibited from being accessed, the network starts the access control mechanism to limit and uniformize access of distributed terminals. Currently, Access control schemes in UMTS and LTE systems are formed based on an Access Class (AC) of a terminal, and are collectively referred to as an Access Class Barring (ACB) mechanism.

For terminals (UE), there will be one AC per terminal, AC being one of (0.. 9). The AC may be stored in a Subscriber Identity Module (SIM)/Universal Subscriber Identity Module (USIM) card of the terminal. In addition, some terminals may have a special AC (11.. 15). Terminals with special ACs have a higher priority in certain applications.

For UMTS systems, the ACB scheme is such that for each AC (0.. 15) an indication is given in the ACB parameters whether the AC is barred (barred), as shown in the following table:

the ACB parameters of the UMTS system are contained in a System Information Block (SIB)3, and when the network side detects congestion or other scenarios that require some terminals to be prohibited from accessing, the network side broadcasts the ACB parameters in an SIB 3. After reading the ACB parameter carried in the SIB3, before initiating random access, the terminal determines whether the access is allowed by the network according to the content of the ACB parameter in the SIB3 and the AC stored in the SIM/USIM card.

For the LTE system, the same access probability (AC-BarringFactor) + and the same barring duration (AC-BarringTime) are used for terminals with an AC of 0.. 9, and the bitmap (bitmap) is used for terminals with an AC of 11.. 15. As follows:

the ACB parameters of the LTE system are contained in SIB2, and when the network side monitors that congestion occurs or other scenarios requiring some terminals to be prohibited from accessing occur, the network side broadcasts the ACB parameters in SIB 2. After the terminal reads the ACB parameter carried in the SIB2, before initiating random access, for a terminal with an AC of 0.. 9, first, a random number rand (whose value range is 0 or more and rand < 1) is generated, if rand < AC-BarringFactor, the terminal may initiate access, otherwise, a timer Tbarring is started, the duration of Tbarring is (0.7+0.6 rand)' AC-BarringTime, and within the range of the timer, a Radio Resource Control (RRC) layer of the terminal may not initiate random access again. For the terminal with the AC of 11.. 15, when one of the corresponding bits in the special access control barring (AC-barringfor special AC) information in the ACB parameter is set to 0, the access can be directly initiated. Otherwise, the terminal generates a random number rand (the value range is not less than 0 and less than 1), if rand is less than ac-BarringFactor, the terminal can initiate access, otherwise, a timer Tbarring is started, the duration of Tbarring is (0.7+ 0.6) rand ac-BarringTime, and the RRC layer of the terminal cannot initiate random access within the range of the timer.

For UMTS and LTE systems, the network broadcasts multiple types of ACB parameters in the SIB, each corresponding to one RRC connection establishment cause. For the LTE system, the RRC connection establishment cause includes calling Data (MO-Data), calling signaling (MO-signaling), and the like, and specific ACB parameters are as follows:

for UMTS systems, the specific ACB parameters are as follows:

the RRC connection establishment cause is the ACB parameter of the calling party:

the reason for establishing the RRC connection is that the called ACB parameters:

the reason for RRC connection establishment is the ACB parameter of the signaling Location/registration parameters (Location/registration parameters):

which type of ACB parameter the terminal specifically uses is based on the cause of the terminal-initiated RRC connection setup request, i.e. the RRC connection setup cause. The RRC connection establishment cause is notified to the RRC layer by a non-access stratum (NAS) layer of the terminal, and the RRC layer carries the RRC connection establishment cause in an RRC connection establishment request message. For example, for the LTE system, the current RRC connection establishment cause carried in the RRC connection establishment request message is as follows:

EstablishmentCause::＝ ENUMERATED{

emergency，highPriorityAccess，mt-Access，mo-Signalling，

mo-Data，spare3，spare2，spare1}

for the UMTS system, the reason for RRC connection establishment carried in the current RRC connection establishment request message is as follows:

as described above, for example, for the LTE system, when the terminal initiates the RRC connection establishment request, if the RRC connection establishment cause indicated by the NAS layer is MO-signaling, the terminal uses an access control barring (ac-BarringForMO-signaling) parameter of the calling signaling broadcasted in the SIB. For the UMTS system, when the terminal initiates an RRC connection establishment request, the terminal uses the Location/Registration parameter broadcasted in the SIB if the RRC connection establishment cause is Location/Registration update. If the RRC connection establishment is due to a called party, the terminal uses a Paging Permission with Access Control Parameters (Paging permissions) parameter for Access Control. Other types of reasons may use Domain Specific access restriction Parameters (Domain Specific access restriction Parameters).

Machine-to-Machine (M2M) communication is a new communication concept, and its purpose is to organically combine different types of communication technologies, such as: machine-to-machine communication, machine control communication, man-machine interactive communication, mobile internet communication, thereby promoting the development of social production and life style. It is expected that the business of people-to-people communication may only account for 1/3 in the entire end market, while a larger amount of communication is inter-machine (small bandwidth system) communication traffic.

Some of the characteristics that MTC communications currently recognized may exist are: the number of Machine Type Communication (MTC) devices is much greater than the number of normal terminals; MTC devices have a low priority feature; the data transmission between the MTC device and the network side has low real-time requirement, namely: the method is time-tolerant; the MTC equipment is limited in energy and requires extremely low power consumption; and so on. An actual MTC device may have one or more of the characteristics described above.

At present, it is considered that for RAN side congestion caused by simultaneous Access of MTC devices, Extended Access Barring (EAB) parameters need to be used, that is, Access control parameters are set for MTC devices individually. While generally considered low priority for MTC devices using EAB parameters, the reason for initiating the RRC connection establishment request should be delay tolerant (delay). Considering the low priority characteristic of the MTC equipment, when a large number of MTC equipment are accessed simultaneously to cause congestion of an access network, the terminal firstly judges whether the access is allowed according to the EAB parameter, and if so, the ACB parameter is continuously used for judging whether the access is allowed. Only after double judgment of EAB and ACB parameters, the MTC device is allowed to access to the network.

The NAS layer maps and obtains the RRC connection establishment reason according to a certain rule based on the current call type/NAS process. For example, if the call type of the terminal is signaling/data, but the terminal is a low priority terminal, the NAS may notify the RRC layer when the terminal initiates an RRC connection of this type: the RRC connection establishment cause is delay tolerant.

In the process of implementing the invention, the inventor finds that the following technical problems exist in the prior art:

the current MTC device initiated RRC connection is generally considered as a low priority access, and the reason for RRC connection establishment is delay tolerant. In the current system, the ACB parameters all correspond to the RRC connection establishment cause, so when the RRC connection establishment cause of the MTC device is delay tolerant, since there is no ACB parameter corresponding to the RRC connection establishment cause in the current ACB parameter configuration, the terminal cannot determine which type of ACB parameter to use, and thus cannot perform access control.

Disclosure of Invention

The embodiment of the invention provides an access control method and equipment, which are used for solving the problem that a terminal cannot carry out access control because the ACB parameters corresponding to the current RRC connection establishment reason do not exist in the existing type of ACB parameters.

An access control method, the method comprising:

the terminal receives and stores one or more types of access control prohibition ACB parameters issued by a network side, wherein each type of ACB parameter corresponds to a Radio Resource Control (RRC) connection establishment reason;

before initiating random access, the terminal determines the reason for establishing RRC connection, when the ACB parameters corresponding to the reason for establishing RRC connection are not stored, one type of ACB parameters are selected from the stored ACB parameters according to a preset ACB parameter selection rule, and the selected ACB parameters are used for carrying out access control.

A terminal, the terminal comprising:

the parameter receiving unit is used for receiving and storing one or more types of access control prohibition ACB parameters issued by a network side, wherein each type of ACB parameter corresponds to a Radio Resource Control (RRC) connection establishment reason;

and the access control unit is used for determining the RRC connection establishment reason before initiating random access, selecting one type of ACB parameter from the stored ACB parameters according to a preset ACB parameter selection rule when the ACB parameter corresponding to the RRC connection establishment reason is not stored, and performing access control by using the selected ACB parameter.

In the solution provided in the embodiment of the present invention, a terminal receives and stores one or more types of ACB parameters issued by a network side, the terminal determines an RRC connection establishment cause before initiating random access, and selects one type of ACB parameter from the stored ACB parameters according to a preset ACB parameter selection rule when the ACB parameter corresponding to the RRC connection establishment cause is not stored, and performs access control using the selected ACB parameter. Therefore, in the scheme, when the ACB parameter corresponding to the current RRC connection establishment cause is not stored in the terminal, one type of ACB parameter is selected from the stored ACB parameters for access control, so that the problem that the terminal cannot perform access control due to the fact that the ACB parameter corresponding to the current RRC connection establishment cause is not present in the existing type of ACB parameters is solved.

An access control method, the method comprising:

the terminal receives and stores the existing type of access control barring ACB parameters and the newly defined type of ACB parameters issued by the network side, wherein each existing type of ACB parameter corresponds to a radio resource control RRC connection establishment reason;

before initiating random access, a terminal determines an RRC connection establishment reason; and when the RRC connection establishment reason does not belong to the RRC connection establishment reason corresponding to the ACB parameters of the existing types, using the stored ACB parameters of the newly defined type to carry out access control.

A method for issuing access control parameters comprises the following steps:

the network side determines whether the access of the terminal needs to be forbidden;

after determining that the terminal needs to be prohibited from accessing, the network side issues access control prohibition ACB parameters to the terminal, wherein the ACB parameters comprise existing types of access control prohibition ACB parameters and newly defined types of ACB parameters, and each existing type of ACB parameter corresponds to a Radio Resource Control (RRC) connection establishment reason.

A terminal, the terminal comprising:

a parameter receiving unit, configured to receive and store existing type of ACB prohibited parameters and newly defined type of ACB parameters issued by a network side, where each existing type of ACB parameter corresponds to a radio resource control RRC connection establishment cause;

an access control unit, configured to determine a reason for establishing an RRC connection before initiating a random access; and when the RRC connection establishment reason does not belong to the RRC connection establishment reason corresponding to the ACB parameters of the existing types, using the stored ACB parameters of the newly defined type to carry out access control.

An access network device, the access network device comprising:

a determining unit, configured to determine whether to prohibit access of the terminal;

and the issuing unit is used for issuing access control prohibition ACB parameters to the terminal after the fact that the terminal access is required to be prohibited is determined, wherein the ACB parameters comprise the existing type of access control prohibition ACB parameters and the newly defined type of ACB parameters, and each existing type of ACB parameter corresponds to one Radio Resource Control (RRC) connection establishment reason.

In another scheme provided by the embodiment of the present invention, a terminal receives and stores an existing type of ACB parameter and a newly defined type of ACB parameter issued by a network side, the terminal determines an RRC connection establishment cause before initiating random access, and when the RRC connection establishment cause does not belong to an RRC connection establishment cause corresponding to each existing type of ACB parameter, the stored newly defined type of ACB parameter is used for access control. Therefore, in the scheme, the network side issues the existing type of access control prohibition ACB parameter to the terminal and also issues the newly defined type of ACB parameter to the terminal, and when the current RRC connection establishment reason does not belong to the RRC connection establishment reason corresponding to each existing type of ACB parameter, the terminal can use the newly defined type of ACB parameter to perform access control, so that the problem that the terminal cannot perform access control due to the fact that no ACB parameter corresponding to the current RRC connection establishment reason exists in the configuration of the existing type of ACB parameters is solved.

Drawings

FIG. 1 is a schematic flow chart of a method provided by an embodiment of the present invention;

fig. 2 is a schematic network-side flowchart of another method according to an embodiment of the present invention;

fig. 3 is a schematic terminal-side flow chart of another method provided in an embodiment of the present invention;

FIG. 4A is a schematic flow chart of the first and second embodiments of the present invention;

FIG. 4B is a schematic flow chart of a third embodiment of the present invention;

fig. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention.

Detailed Description

In order to solve the problem that access control cannot be performed by a terminal due to the fact that no ACB parameter corresponding to the current RRC connection establishment cause exists in the existing type of ACB parameter configuration, embodiments of the present invention provide a first access control method.

Referring to fig. 1, a first access control method provided in the embodiment of the present invention includes the following steps:

step 10: the terminal receives and stores one or more types of ACB parameters issued by the network side, wherein each type of ACB parameter corresponds to one RRC connection establishment reason;

here, the network side issues the existing type of ACB parameter; the network side may issue the ACB parameters to the terminal through a broadcast message, for example, in an LTE system, the ACB parameters are issued to the terminal through an SIB2, where each type of ACB parameter includes a prohibited AC; in the UMTS system, the ACB parameters are issued to the terminal through the SIB3, and each type of ACB parameter includes an access factor, a barring duration, and the like.

Step 11: before initiating random access, the terminal determines the reason for establishing RRC connection, when the ACB parameters corresponding to the reason for establishing RRC connection are not stored, one type of ACB parameters are selected from the stored ACB parameters according to a preset ACB parameter selection rule, and the selected ACB parameters are used for carrying out access control.

The specific implementation of step 11 can adopt the following two ways:

firstly, before initiating random access, an RRC layer of a terminal determines an RRC connection establishment reason according to an indication of a non-access stratum (NAS), and searches an ACB parameter corresponding to the RRC connection establishment reason from stored ACB parameters; and when the ACB parameter corresponding to the RRC connection establishment reason is not found, selecting one type of ACB parameter from the stored ACB parameters according to a preset ACB parameter selection rule, and performing access control by using the selected ACB parameter, wherein the specific access control is the same as that in the prior art.

Wherein, one type of ACB parameter is selected from the stored ACB parameters according to a preset ACB parameter selection rule, and the specific implementation thereof may be as follows:

the RRC layer selects an ACB parameter of a set type from the stored ACB parameters, for example, for the LTE system, the stored ACB parameter selects an ACB parameter whose RRC connection establishment cause is MO-Data, or selects an ACB parameter whose RRC connection establishment cause is MO-signaling. For the UMTS system, the ACB parameter corresponding to the RRC connection establishment cause, namely, the Domain Specific Access Class Barred List (Domain Specific Access Barred List), may be selected from the stored ACB Parameters, the ACB parameter corresponding to the paging permission (paging with Access Control Parameters) related to Access Control may be selected as the RRC connection establishment cause, or the ACB parameter corresponding to Location/Registration (Location/Registration) may be selected as the RRC connection establishment cause. Or,

and the RRC layer selects one type of ACB parameter from the various types of ACB parameters according to the stored contents of the various types of ACB parameters. For example, the most severe type or the most relaxed type of ACB parameter is selected from various types of ACB parameters; for a UMTS system, the most severe type of ACB parameter may be the ACB parameter that contains the most barred ACs, and the most relaxed type of ACB parameter may be the ACB parameter that contains the least barred ACs; for the LTE system, the most severe type of ACB parameter may be an ACB parameter with the smallest included access factor or the longest included barring time length, and the most relaxed type of ACB parameter may be an ACB parameter with the largest included access factor or the shortest included barring time length.

Secondly, before initiating random access, the NAS of the terminal determines an RRC connection establishment reason, and when the ACB parameter corresponding to the RRC connection establishment reason is not stored, the NAS determines the type of the ACB parameter used for access control according to the current call type or NAS process, and informs the type to an RRC layer; the RRC layer selects the ACB parameter corresponding to the type of the notification from the stored ACB parameters, and performs access control by using the selected ACB parameter, wherein the specific access control is the same as that in the prior art; or

Before initiating random access, the NAS of the terminal determines an RRC connection establishment reason, when the ACB parameter corresponding to the RRC connection establishment reason is not stored, the information of the current call type or the NAS process is sent to an RRC layer, the RRC layer determines the type of the ACB parameter used for access control according to the current call type or the NAS process, selects the ACB parameter corresponding to the determined type from the stored ACB parameters, and uses the selected ACB parameter for access control.

Specifically, in the LTE system, the type of ACB parameter used for performing access control is determined according to the current call type, which is illustrated as follows:

if the current call type is data (originating calls), determining the type of the ACB parameter used for access control as the ACB parameter corresponding to the calling data as the RRC connection establishment reason; if the current call type is signaling (addressing), determining that the type of the ACB parameter used for access control is the ACB parameter corresponding to the calling signaling for the RRC connection establishment reason; if the current call type is an emergency call (emergency calls), determining that the type of the ACB parameter used for performing access control is the ACB parameter corresponding to the emergency call due to RRC connection establishment.

Specifically, in the UMTS system, the type of ACB parameter used for performing access control is determined according to the current NAS procedure, which is illustrated as follows:

if the current NAS process is a Location Update (Location Update) or routing area Update (routing Update) process, determining that the type of the ACB parameter used for access control is the ACB parameter corresponding to the RRC connection establishment reason;

if the current NAS process is a packet paging response (Answer to packet paging) process, determining that the type of the ACB parameter used for access control is an ACB parameter corresponding to a called party as an RRC connection establishment reason;

and if the current NAS process is other processes, determining that the type of the ACB parameter used for access control is the ACB parameter corresponding to the calling party as the RRC connection establishment reason.

The terminal in the method can be any terminal such as an MTC device.

In the method, in the LTE system, the ACB parameters issued by the network side include, but are not limited to: the RRC connection establishment reason is ACB parameters corresponding to calling data, and the RRC connection establishment reason is ACB parameters corresponding to calling signaling. In the UMTS system, the ACB parameters issued by the network side include, but are not limited to: the RRC connection establishment reason is ACB parameters corresponding to a calling party, the RRC connection establishment reason is ACB parameters corresponding to a called party, and the RRC connection establishment reason is ACB parameters corresponding to signaling.

In order to solve the problem that the access control of the terminal cannot be performed due to the fact that no ACB parameter corresponding to the current RRC connection establishment cause exists in the existing type of ACB parameter configuration, an embodiment of the present invention provides a second access control method.

Referring to fig. 2, a second access control method provided in the embodiment of the present invention is as follows for a network side:

step 20: the network side determines whether the access of the terminal needs to be forbidden; here, the network side may determine that the terminal access needs to be prohibited when detecting RAN congestion or other situations where the terminal access needs to be prohibited;

step 21: after determining that the access of the terminal needs to be forbidden, the network side sends ACB parameters to the terminal, wherein the ACB parameters comprise existing type of access control forbidden ACB parameters and newly defined type of ACB parameters, and each existing type of ACB parameters corresponds to one RRC connection establishment reason.

Here, the network side may issue the ACB parameters to the terminal through a broadcast message, for example, in the LTE system, the ACB parameters are issued to the terminal through an SIB2, and each type of ACB parameter includes a prohibited AC; in the UMTS system, the ACB parameters are issued to the terminal through the SIB3, and each type of ACB parameter includes an access factor, a barring duration, and the like.

In the method, the ACB parameter of the newly defined type may be: ACB parameters irrelevant to the RRC connection establishment cause, or ACB parameters of a special type, or ACB parameters corresponding to the RRC connection establishment cause of delay tolerance (delaytolerant), and the like.

In the method, the terminal may be any terminal such as an MTC device.

In the LTE system, the existing ACB parameters issued by the network side include, but are not limited to: the RRC connection establishment reason is ACB parameters corresponding to calling data, and the RRC connection establishment reason is ACB parameters corresponding to calling signaling. In the UMTS system, the existing ACB parameters issued by the network side include, but are not limited to: the RRC connection establishment reason is ACB parameters corresponding to a calling party, the RRC connection establishment reason is ACB parameters corresponding to a called party, and the RRC connection establishment reason is ACB parameters corresponding to signaling.

Referring to fig. 3, a flow of a second access control method provided in the embodiment of the present invention for a terminal side is as follows:

step 30: the terminal receives and stores the ACB parameters of the existing types and the ACB parameters of the newly defined types issued by the network side, wherein each ACB parameter of the existing types corresponds to one RRC connection establishment reason;

step 31: before initiating random access, a terminal determines an RRC connection establishment reason; and when the RRC connection establishment reason does not belong to the RRC connection establishment reason corresponding to the ACB parameters of the existing types, using the stored ACB parameters of the newly defined type to carry out access control.

In the method, the ACB parameter of the newly defined type may be: the ACB parameter unrelated to the RRC connection establishment cause, or the ACB parameter of a special type, or the RRC connection establishment cause is an ACB parameter corresponding to the delay tolerant delaytolerant.

The specific implementation of step 31 can adopt the following two ways:

firstly, before initiating random access, an RRC layer of a terminal determines an RRC connection establishment reason according to an indication of an NAS (network attached storage), and searches an ACB parameter corresponding to the RRC connection establishment reason from stored ACB parameters of existing types; when the ACB parameter corresponding to the RRC connection establishment reason is not found, performing access control by using the stored ACB parameter of the newly defined type;

the method can be applied to the case that the newly defined type of ACB parameter is an ACB parameter which is not related to the RRC connection establishment reason or a special type of ACB parameter.

Secondly, before initiating random access, the RRC layer of the terminal determines the reason for establishing RRC connection according to the indication of NAS, and searches ACB parameters corresponding to the reason for establishing RRC connection from the stored ACB parameters of the existing type and the ACB parameters of the newly defined type; and performing access control by using the searched ACB parameter of the new defined type.

The method can be applied to the case that the newly defined type of ACB parameter is the ACB parameter corresponding to the RRC connection establishment cause, namely, delay tolerance delay.

In the method, in an LTE system, access control is performed using ACB parameters of a newly defined type, and the specific implementation thereof may be as follows:

and comparing the AC stored in the SIM/USIM card of the terminal with the access grade AC in the ACB parameters of the newly defined type, and determining whether to initiate random access according to the comparison result. For example, if the comparison is consistent, the random access is initiated, otherwise, the random access is not initiated.

In the UMTS system, access control is performed using ACB parameters of a newly defined type, which may be implemented as follows:

when the value of the AC stored in the SIM/USIM card of the terminal is between 0 and 9: generating a random number, if the random number is smaller than the access factor in the ACB parameter of the new defined type, initiating random access, otherwise, starting a timer with a starting time length determined according to the forbidden time length in the ACB parameter of the new defined type, and not initiating random access within the range of the timer;

when the value of the AC stored in the SIM/USIM card of the terminal is between 11 and 15: if one bit corresponding to the access control prohibition information of the special access control in the ACB parameter of the newly defined type is set to be 0, initiating random access, otherwise, generating a random number, initiating random access when the random number is smaller than the access factor, starting a timer with a starting time length determined according to the prohibition time length when the random number is not smaller than the access factor, and not initiating random access within the range of the timer.

In the method, the terminal may be any terminal such as an MTC device.

The invention is illustrated below with reference to specific examples:

the first embodiment is as follows:

as shown in fig. 4A:

step 1, a network side detects RAN congestion and starts broadcasting ACB parameters through SIB;

step 2, the terminal receives and stores the ACB parameters carried in the SIB;

and step 3, when an RRC layer of the terminal initiates an RRC connection establishment request, determining that the RRC connection establishment reason is delay tolerant according to the indication of the NAS, searching the ACB parameter corresponding to the RRC connection establishment reason from the stored ACB parameters, if the ACB parameter corresponding to the RRC connection establishment reason is not found, selecting one type of ACB parameter from the stored ACB parameters according to a preset ACB parameter selection rule, and performing access control by using the selected ACB parameter.

Example two:

as shown in fig. 4A:

step 2, the terminal receives and stores the ACB parameters carried in the SIB;

step 3, when the NAS of the terminal initiates an RRC connection establishment request, determining that the RRC connection establishment reason is delay tolerant and the ACB parameter corresponding to the RRC connection establishment reason is not stored, determining the type of the ACB parameter used for access control according to the current call type or NAS process, and notifying the type and the RRC connection establishment reason to an RRC layer; and the RRC layer selects the ACB parameter corresponding to the type of the notification from the stored ACB parameters and uses the selected ACB parameter for access control.

Example three:

as shown in fig. 4B:

step 1, the network side detects the RAN congestion and starts to broadcast ACB parameters through SIB. The ACB parameters comprise the existing type of ACB parameters, the ACB parameters which are irrelevant to the RRC connection establishment reason, the special type of ACB parameters or the ACB parameters corresponding to the delay tolerant of the RRC connection establishment reason;

step 2, the terminal receives and stores the ACB parameters carried in the SIB;

step 3, when the terminal initiates an RRC connection establishment request, determining that the current RRC connection establishment reason is delay tolerant; and when the current RRC connection establishment reason does not belong to the RRC connection establishment reason corresponding to the ACB parameters of the existing types, using the ACB parameters irrelevant to the RRC connection establishment reason or the ACB parameters of the special type or the ACB parameters corresponding to the delay tolerant as the RRC connection establishment reason to carry out access control.

One embodiment for the network side to inform ACB parameters may be:

for LTE systems, the network informs the specific IEs of ACB parameters in SIB2 as follows:

for UMTS systems, the specific IE for the network to inform ACB parameters in SIB3 is as follows:

referring to fig. 5, an embodiment of the present invention provides a terminal, where the terminal includes:

a parameter receiving unit 50, configured to receive and store one or more types of access control barring ACB parameters issued by a network side, where each type of ACB parameter corresponds to a radio resource control RRC connection establishment cause;

the access control unit 51 is configured to determine an RRC connection establishment cause before initiating random access, select one type of ACB parameter from the stored ACB parameters according to a preset ACB parameter selection rule when the ACB parameter corresponding to the RRC connection establishment cause is not stored, and perform access control using the selected ACB parameter.

As an embodiment, the access control unit 51 includes:

the RRC unit is used for determining the RRC connection establishment reason according to the indication of a non-access stratum (NAS) before initiating random access, and searching the ACB parameter corresponding to the RRC connection establishment reason from the stored ACB parameters; and when the ACB parameter corresponding to the RRC connection establishment reason is not found, selecting one type of ACB parameter from the stored ACB parameters according to a preset ACB parameter selection rule, and performing access control by using the selected ACB parameter.

The RRC unit is configured to:

selecting ACB parameters of a set type from the stored ACB parameters; or,

and selecting one type of ACB parameter from the various types of ACB parameters according to the stored contents of the various types of ACB parameters.

The RRC unit is configured to:

selecting the ACB parameter with the most severe type or the most loose type from the stored ACB parameters;

for a Universal Mobile Telecommunications System (UMTS) system, the most severe type of ACB parameter is the ACB parameter containing the most forbidden Access Classes (ACs), and the most relaxed type of ACB parameter is the ACB parameter containing the least forbidden ACs;

for a Long Term Evolution (LTE) system, the most severe type of ACB parameter is the ACB parameter with the smallest included access factor or the longest included forbidden duration, and the most relaxed type of ACB parameter is the ACB parameter with the largest included access factor or the shortest included forbidden duration.

As another embodiment, the access control unit 51 includes a NAS unit and an RRC unit, where:

the NAS unit is used for determining an RRC connection establishment reason before initiating random access, determining the type of ACB parameters used for access control according to the current call type or NAS process when the ACB parameters corresponding to the RRC connection establishment reason are not stored, and informing the RRC unit of the type; the RRC unit is used for selecting the ACB parameter corresponding to the type of the notice from the stored ACB parameters and using the selected ACB parameter to carry out access control; or,

the NAS unit is used for determining an RRC connection establishment reason before initiating random access, and sending the information of the current call type or the NAS process to the RRC unit when the ACB parameter corresponding to the RRC connection establishment reason is not stored; and the RRC unit is used for determining the type of the ACB parameter used for carrying out access control according to the current call type or NAS process, selecting the ACB parameter corresponding to the determined type from the stored ACB parameters, and carrying out access control by using the selected ACB parameter.

The NAS unit is to:

in an LTE system, if the current calling type is data, determining the type of the ACB parameter used for access control as the ACB parameter corresponding to the calling data as the RRC connection establishment reason; if the current call type is signaling, determining that the type of the ACB parameter used for access control is the ACB parameter corresponding to the calling signaling for the RRC connection establishment reason; and if the current call type is the emergency call, determining that the type of the ACB parameter used for carrying out access control is the ACB parameter corresponding to the emergency call for the RRC connection establishment reason.

The NAS unit is to:

in a UMTS system, if the current NAS process is a Location Update or Routing area Update, determining the type of an ACB parameter used for access control as an RRC connection establishment reason as an ACB parameter corresponding to signaling;

if the current NAS process is a packet paging response (Answer to packet) paging process, determining that the type of the ACB parameter used for access control is an ACB parameter corresponding to a called party as an RRC connection establishment reason;

The terminal is Machine Type Communication (MTC) equipment.

In the LTE system, ACB parameters delivered by the network side include: the RRC connection establishment reason is ACB parameters corresponding to calling data, and the RRC connection establishment reason is ACB parameters corresponding to calling signaling; or,

in the UMTS system, the ACB parameters issued by the network side include: the RRC connection establishment reason is ACB parameters corresponding to a calling party, the RRC connection establishment reason is ACB parameters corresponding to a called party, and the RRC connection establishment reason is ACB parameters corresponding to signaling.

Still referring to fig. 5, an embodiment of the present invention provides a terminal, including:

a parameter receiving unit 50, configured to receive and store existing type of ACB prohibited parameters and newly defined type of ACB parameters issued by a network side, where each existing type of ACB parameter corresponds to a radio resource control RRC connection establishment cause;

an access control unit 51, configured to determine an RRC connection establishment cause before initiating random access; and when the RRC connection establishment reason does not belong to the RRC connection establishment reason corresponding to the ACB parameters of the existing types, using the stored ACB parameters of the newly defined type to carry out access control.

The access control unit 51 includes:

the RRC unit is used for determining the RRC connection establishment reason according to the indication of a non-access stratum (NAS) before initiating random access, and searching the ACB parameter corresponding to the RRC connection establishment reason from the stored ACB parameters of the existing types; when the ACB parameter corresponding to the RRC connection establishment reason is not found, performing access control by using the stored ACB parameter of the newly defined type; or,

before initiating random access, determining an RRC connection establishment reason according to the indication of a non-access stratum (NAS), and searching an ACB parameter corresponding to the RRC connection establishment reason from the stored ACB parameters of the existing type and the ACB parameters of the newly defined type; and performing access control by using the searched ACB parameter of the new defined type.

The ACB parameters of the new defined type are: the ACB parameter unrelated to the RRC connection establishment cause, or the ACB parameter of a special type, or the RRC connection establishment cause is an ACB parameter corresponding to the delay tolerant delay.

The terminal is Machine Type Communication (MTC) equipment.

In the LTE system, the ACB parameters of the existing type sent by the network side include: the RRC connection establishment reason is ACB parameters corresponding to calling data, and the RRC connection establishment reason is ACB parameters corresponding to calling signaling; or,

in the UMTS system, the ACB parameters of the existing type sent by the network side include: the RRC connection establishment reason is ACB parameters corresponding to a calling party, the RRC connection establishment reason is ACB parameters corresponding to a called party, and the RRC connection establishment reason is ACB parameters corresponding to signaling.

Referring to fig. 6, an embodiment of the present invention provides an access network device, where the access network device includes:

a determining unit 60, configured to determine whether to prohibit terminal access;

the issuing unit 61 is configured to issue an access control barring ACB parameter to the terminal after it is determined that the terminal needs to be barred from accessing, where the ACB parameter includes an existing type of access control barring ACB parameter and a newly defined type of ACB parameter, and each existing type of ACB parameter corresponds to a radio resource control RRC connection establishment cause.

The terminal is Machine Type Communication (MTC) equipment.

In the LTE system, the ACB parameters of the existing type issued by the issuing unit include: the RRC connection establishment reason is ACB parameters corresponding to calling data, and the RRC connection establishment reason is ACB parameters corresponding to calling signaling; or,

in the UMTS system, the ACB parameters of the existing type sent by the sending unit include: the RRC connection establishment reason is ACB parameters corresponding to a calling party, the RRC connection establishment reason is ACB parameters corresponding to a called party, and the RRC connection establishment reason is ACB parameters corresponding to signaling.

The access network equipment is a base station in an LTE system or a Radio Network Controller (RNC) in a UMTS system.

In conclusion, the beneficial effects of the invention include:

in the solution provided in the embodiment of the present invention, a terminal receives and stores one or more types of ACB parameters issued by a network side, the terminal determines an RRC connection establishment cause before initiating random access, and selects one type of ACB parameter from the stored ACB parameters according to a preset ACB parameter selection rule when the ACB parameter corresponding to the RRC connection establishment cause is not stored, and performs access control using the selected ACB parameter. Therefore, in the scheme, when the ACB parameter corresponding to the current RRC connection establishment cause is not stored, the terminal selects one type of ACB parameter from the stored ACB parameters for access control, so that the problem that the terminal cannot perform access control due to the fact that the ACB parameter corresponding to the current RRC connection establishment cause is not in the existing type of ACB parameter configuration is solved.

The invention provides a terminal access control method, which can solve the problem of how to determine the type of the ACB parameter used when an MTC type terminal initiates delay access, so that the MTC type terminal can be controlled to access by a network, and the aggravation of a congestion state is effectively avoided.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An access control method, comprising:

2. The method of claim 1, wherein the terminal determines an RRC connection establishment cause before initiating the random access, and when an ACB parameter corresponding to the RRC connection establishment cause is not stored, selects a type of ACB parameter from the stored ACB parameters according to a preset ACB parameter selection rule, and performs access control using the selected ACB parameter, which specifically includes:

before initiating random access, an RRC layer of the terminal determines an RRC connection establishment reason according to the indication of a non-access stratum (NAS), and searches an ACB parameter corresponding to the RRC connection establishment reason from stored ACB parameters; and when the ACB parameter corresponding to the RRC connection establishment reason is not found, selecting one type of ACB parameter from the stored ACB parameters according to a preset ACB parameter selection rule, and performing access control by using the selected ACB parameter.

3. The method of claim 2, wherein the selecting a type of ACB parameter from the stored ACB parameters according to the preset ACB parameter selection rule comprises:

the RRC layer selects ACB parameters of a set type from the stored ACB parameters; or,

and the RRC layer selects one type of ACB parameter from the various types of ACB parameters according to the stored contents of the various types of ACB parameters.

4. The method of claim 3, wherein the RRC layer selects one type of ACB parameter from the various types of ACB parameters according to the contents of the stored various types of ACB parameters, comprising:

the RRC layer selects the ACB parameter with the most strict type or the most loose type from the stored ACB parameters;

5. The method of claim 1, wherein the terminal determines an RRC connection establishment cause before initiating the random access, and when an ACB parameter corresponding to the RRC connection establishment cause is not stored, selects a type of ACB parameter from the stored ACB parameters according to a preset ACB parameter selection rule, and performs access control using the selected ACB parameter, which specifically includes:

before initiating random access, the NAS of the terminal determines an RRC connection establishment reason, determines the type of ACB parameters used for access control according to the current call type or NAS process when the ACB parameters corresponding to the RRC connection establishment reason are not stored, and informs the type to an RRC layer; the RRC layer selects the ACB parameter corresponding to the type of the notification from the stored ACB parameters and uses the selected ACB parameter to carry out access control; or,

6. The method of claim 5, wherein in an LTE system, the determining the type of ACB parameters to use for access control based on a current call type comprises:

if the current call type is data organizing calls, determining the type of the ACB parameter used for access control as the ACB parameter corresponding to the calling data as the RRC connection establishment reason;

if the current call type is signaling addressing, determining that the type of the ACB parameter used for access control is the ACB parameter corresponding to the calling signaling for the RRC connection establishment reason;

and if the current call type is the emergency calls, determining that the type of the ACB parameter used for access control is the ACB parameter corresponding to the emergency call for the RRC connection establishment reason.

7. The method of claim 5, wherein the determining the type of ACB parameter used for access control according to the current NAS procedure in the UMTS system comprises:

if the current NAS process is a Location Update or routing area Update process, determining the type of the ACB parameter used for access control as an ACB parameter corresponding to an RRC connection establishment reason;

8. The method of any one of claims 1-7, wherein the terminal is a Machine Type Communication (MTC) device.

9. The method of any one of claims 1 to 7, wherein in the LTE system, the ACB parameters issued by the network side include: the RRC connection establishment reason is ACB parameters corresponding to calling data, and the RRC connection establishment reason is ACB parameters corresponding to calling signaling; or,

10. An access control method, comprising:

11. The method of claim 10, wherein the terminal determines an RRC connection establishment cause before initiating random access; when the RRC connection establishment cause does not belong to the RRC connection establishment cause corresponding to the ACB parameter of each existing type, performing access control using the stored ACB parameter of the newly defined type, which specifically includes:

before initiating random access, an RRC layer of the terminal determines an RRC connection establishment reason according to the indication of a non-access stratum (NAS), and searches an ACB parameter corresponding to the RRC connection establishment reason from stored ACB parameters of the existing types; when the ACB parameter corresponding to the RRC connection establishment reason is not found, performing access control by using the stored ACB parameter of the newly defined type; or,

before initiating random access, an RRC layer of the terminal determines an RRC connection establishment reason according to the indication of a non-access stratum (NAS), and searches an ACB parameter corresponding to the RRC connection establishment reason from stored ACB parameters of an existing type and ACB parameters of a newly defined type; and performing access control by using the searched ACB parameter of the new defined type.

12. The method according to claim 10 or 11, wherein the ACB parameters of the newly defined type are: the ACB parameter unrelated to the RRC connection establishment cause, or the ACB parameter of a special type, or the RRC connection establishment cause is an ACB parameter corresponding to the delay tolerant delay.

13. The method of claim 10 or 11, wherein the terminal is a Machine Type Communication (MTC) device.

14. The method of claim 10 or 11, wherein in the LTE system, the ACB parameters of the existing type issued by the network side include: the RRC connection establishment reason is ACB parameters corresponding to calling data, and the RRC connection establishment reason is ACB parameters corresponding to calling signaling; or,

15. A method for issuing access control parameters is characterized in that the method comprises the following steps:

16. The method of claim 15, wherein the ACB parameters of the newly defined type are: the ACB parameter unrelated to the RRC connection establishment cause, or the ACB parameter of a special type, or the RRC connection establishment cause is an ACB parameter corresponding to the delay tolerant delay.

17. The method of claim 15, wherein the terminal is a Machine Type Communication (MTC) device.

18. The method of claim 15, wherein in the LTE system, the ACB parameters of the existing type issued by the network side include: the RRC connection establishment reason is ACB parameters corresponding to calling data, and the RRC connection establishment reason is ACB parameters corresponding to calling signaling; or,

19. A terminal, characterized in that the terminal comprises:

20. The terminal of claim 19, wherein the access control unit comprises:

21. The terminal of claim 20, wherein the RRC unit is configured to:

selecting ACB parameters of a set type from the stored ACB parameters; or,

22. The terminal of claim 21, wherein the RRC unit is configured to:

23. The terminal of claim 19, wherein the access control unit comprises a NAS unit and a RRC unit, wherein:

24. The terminal of claim 23, wherein the NAS unit is to:

in an LTE system, if the current call type is data organizing calls, determining the type of ACB parameters used for access control as ACB parameters corresponding to calling data as an RRC connection establishment cause;

25. The terminal of claim 23, wherein the NAS unit is to:

26. The terminal of any one of claims 19-25, wherein the terminal is a machine type communication, MTC, device.

27. The terminal of any one of claims 19 to 25, wherein in the LTE system, the ACB parameters issued by the network side include: the RRC connection establishment reason is ACB parameters corresponding to calling data, and the RRC connection establishment reason is ACB parameters corresponding to calling signaling; or,

28. A terminal, characterized in that the terminal comprises:

29. The terminal of claim 28, wherein the access control unit comprises:

30. The terminal according to claim 28 or 29, wherein the ACB parameters of the newly defined type are: the ACB parameter unrelated to the RRC connection establishment cause, or the ACB parameter of a special type, or the RRC connection establishment cause is an ACB parameter corresponding to the delay tolerant delay.

31. The terminal of claim 28 or 29, wherein the terminal is a Machine Type Communication (MTC) device.

32. The terminal of claim 28 or 29, wherein in the LTE system, the ACB parameters of the existing type issued by the network side include: the RRC connection establishment reason is ACB parameters corresponding to calling data, and the RRC connection establishment reason is ACB parameters corresponding to calling signaling; or,

33. An access network device, characterized in that the access network device comprises:

34. The access network device of claim 33, wherein the ACB parameters of the newly defined type are: the ACB parameter unrelated to the RRC connection establishment cause, or the ACB parameter of a special type, or the RRC connection establishment cause is an ACB parameter corresponding to the delay tolerant delay.

35. The access network device of claim 33, wherein the terminal is a Machine Type Communication (MTC) device.

36. The access network device of claim 33, wherein in the LTE system, the ACB parameters of the existing type issued by the issuing unit include: the RRC connection establishment reason is ACB parameters corresponding to calling data, and the RRC connection establishment reason is ACB parameters corresponding to calling signaling; or,

37. An access network device according to any one of claims 33-36, characterised in that the access network device is a base station or a radio network controller, RNC.