CN101925153B - Access controlling method, equipment and system - Google Patents
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- CN101925153B CN101925153B CN200910203780A CN200910203780A CN101925153B CN 101925153 B CN101925153 B CN 101925153B CN 200910203780 A CN200910203780 A CN 200910203780A CN 200910203780 A CN200910203780 A CN 200910203780A CN 101925153 B CN101925153 B CN 101925153B
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Abstract
The embodiment of the invention discloses an access controlling method, equipment thereof and a system thereof. The method comprises the following steps of: a terminal receives accesses controlling information, wherein the accesses controlling information comprises a probability threshold for prohibiting the terminal from accessing a circuit switch feedback CSFB service, and the terminal ensures that the access of the CSFB service is failing when the access probability factor selected by the terminal is larger than the probability threshold or the accesses controlling information comprises an instruction for prohibiting the terminal from accessing the CSFB service; or the accesses controlling information comprises a probability threshold for prohibiting the terminal from accessing a circuit switch feedback CSFB service, and the terminal sends a RRC connection request when the access probability factor selected by the terminal is less than and equal to the probability threshold or the accesses controlling information comprises an instruction for allowing the terminal to access the CSFB service.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to an access control method, device, and system.
Background
In an existing Long Term Evolution (LTE) system, after receiving a Request from a Non-Access (NAS) layer, a Radio Resource Control (RRC) layer of a terminal determines whether to initiate a service according to a reason of the Request and Access Control restriction information delivered by a network, and if so, sends an RRC Connection Request message to an evolved node b (eNB), where the message includes an Establishment Cause (Establishment Cause). And the eNB performs access control according to the received establishment reason.
In an existing Universal Mobile Telecommunications System (UMTS) or Global System for Mobile communications (GSM), if a circuit Domain and a packet Domain need to be controlled separately, a Domain Specific Access Control (DSAC) is started to Control an idle terminal.
In the process of implementing the invention, the inventor finds that: the establishment reasons for Access control in the LTE system only include an emergency call (emergency), a high Priority Access (high Priority Access), a called (mt-Access), a signaling (mo-signaling) and a calling (mo-Data), so that a terminal in the LTE system can Access a cell in the UMTS/GSM system through a circuit domain Fallback (CSFB) service in an idle state, thereby disabling a DSAC initiated in the UMTS system and reducing the load control capability of the UMTS/GSM system. If the UMTS/GSM network controls the handover decision, the resource utilization of the LTE network will be reduced. There is therefore a need for controlling CSFB traffic in LTE networks.
Disclosure of Invention
The embodiment of the invention provides an access control method, equipment and a system.
The embodiment of the invention provides an access control method, which comprises the following steps:
the terminal receives the access control information;
the terminal initiates a Circuit Switched Fallback (CSFB) service;
the access control information comprises a probability threshold for forbidding the terminal to access a Circuit Switched Fallback (CSFB) service, and when the access probability factor selected by the terminal is smaller than or greater than the probability threshold, or the access control information comprises an indication for forbidding the terminal to access the CSFB service, the terminal determines that the CSFB service fails to be accessed; or,
and the access control information comprises a probability threshold for forbidding the terminal to access the Circuit Switched Fallback (CSFB) service, and when the access probability factor selected by the terminal is greater than or equal to the probability threshold or the access control information comprises an indication for allowing the terminal to access the CSFB service, the terminal sends an RRC connection establishment request connection request.
The embodiment of the invention also provides an access control method, which comprises the following steps:
the network side equipment sends access control information;
if the load of the LTE network where the network side equipment is located or the target UMTS/GSM network to be backed off is too large, or the target UMTS network to be backed off starts the DSAC, or the emergency situation is known to occur, the access control information comprises an indication for prohibiting the terminal from accessing the CSFB service, or a first probability threshold for prohibiting the terminal from accessing the CSFB service; otherwise, the access control information includes an indication that the terminal is allowed to access the CSFB service, or a second probability threshold that the terminal is prohibited from accessing the CSFB service.
An embodiment of the present invention provides a user equipment, including:
the first receiving module is used for receiving the access control information;
a first control module, configured to determine that a CSFB service access fails when the access control information includes a probability threshold for prohibiting the terminal from accessing a circuit switched fallback CSFB service, and an access probability factor selected by the terminal is greater than the probability threshold, or the access control information includes an indication for prohibiting the terminal from accessing the CSFB service; or, when the access control information includes a probability threshold for prohibiting the terminal from accessing a Circuit Switched Fallback (CSFB) service, and the access probability factor selected by the terminal is less than or equal to the probability threshold, or the access control information includes an indication for allowing the terminal to access the CSFB service, an RRC connection request is sent.
An embodiment of the present invention further provides a network side device, including:
a sending module, configured to send access control information;
if the load of the LTE network where the network side equipment is located or the target UMTS/GSM network to be backed off is too large, or the target UMTS network to be backed off starts the DSAC, or the emergency situation is known to occur, the access control information comprises an indication for prohibiting the terminal from accessing the CSFB service, or a first probability threshold for prohibiting the terminal from accessing the CSFB service; otherwise, the access control information includes an indication that the terminal is allowed to access the CSFB service, or a second probability threshold that the terminal is prohibited from accessing the CSFB service.
An embodiment of the present invention provides an access control system, including: the network side equipment is used for sending access control information;
if the load of the LTE network where the network side equipment is located or the target UMTS/GSM network to be backed off is too large, or the target UMTS network to be backed off starts the DSAC, or the emergency situation is known to occur, the access control information comprises an indication for prohibiting the terminal from accessing the CSFB service, or a first probability threshold for prohibiting the terminal from accessing the CSFB service; otherwise, the access control information includes an indication allowing the terminal to access the CSFB service, or a second probability threshold prohibiting the terminal from accessing the CSFB service; the user equipment is configured to determine that the CSFB service access fails when the access control information includes a probability threshold for prohibiting the terminal from accessing a circuit switched fallback CSFB service, and an access probability factor selected by the terminal is greater than the probability threshold, or the access control information includes an indication for prohibiting the terminal from accessing the CSFB service;
or, when the access control information includes a probability threshold for prohibiting the terminal from accessing a Circuit Switched Fallback (CSFB) service, and the access probability factor selected by the terminal is less than or equal to the probability threshold, or the access control information includes an indication for allowing the terminal to access the CSFB service, an RRC connection request is sent. In the embodiment of the invention, the network side equipment sends the access control information aiming at the CSFB service to the terminal, so that the terminal can carry out access control on the CSFB service, and the phenomenon that the idle terminal accesses a cell in a UMTS/GSM system through the CSFB service to reduce the load control capability of the UMTS/GSM system is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of an access control method according to an embodiment of the present invention;
fig. 2 is a flowchart of an access control method according to a second embodiment of the present invention;
fig. 3 is a flowchart of an access control method according to a third embodiment of the present invention;
fig. 4 is a flowchart of an access control method according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a user equipment according to a fifth embodiment of the present invention;
fig. 6 is a schematic structural diagram of a network-side device according to a sixth embodiment of the present invention;
fig. 7 is a schematic structural diagram of an access control system according to a seventh embodiment of the present invention;
fig. 8 is a schematic structural diagram of an access control system according to an eighth embodiment of the present invention.
Detailed Description
The embodiment of the invention provides an access control method, wherein a network side sends access control information, and the access information comprises an indication that whether a terminal is forbidden to access a CSFB service or a probability threshold for forbidding the terminal to access the CSFB service, which is determined by network side equipment according to actual conditions, so as to perform access control on the CSFB service of the terminal. Correspondingly, the terminal receives the access control information, and determines that the CSFB service fails to access or sends an RRC connection request according to the indication or the probability threshold in the access control information when the CSFB service is initiated.
The embodiments of the invention are applicable to an LTE system or an LTE + system, and the network side equipment sends the access control information aiming at the CSFB service to the terminal, so that the terminal can carry out access control on the CSFB service, thereby avoiding the idle state terminal from accessing the cell in the UMTS/GSM system through the CSFB service to reduce the load control capability of the UMTS/GSM system, being beneficial to realizing stable load control by the UMTS system through DSAC, and being beneficial to avoiding congestion in the LTE system and the UMTS/GSM system.
Referring to fig. 1, an embodiment of the present invention provides an access control method, which mainly includes:
step 101: the terminal receives access control information including a BOOLEAN (BOOLEAN) variable ac-barringforscsfb indicating whether the terminal is allowed to access CSFB traffic.
For example, a terminal receives a system broadcast message and reads access control information in the message.
Step 102: and the terminal performs access control according to the indication of the ac-BarringForCSFB.
Specifically, if the ac-barringforscsfb indicates that the terminal is allowed to access the CSFB service, for example, the ac-barringforscsfb is False, the terminal sends an RRC connection request for accessing the CSFB service to a network side device, such as an evolved base station eNB. If the ac-barringforscsfb indicates that the terminal is prohibited from accessing the CSFB service, for example, the ac-barringforscsfb is True, the terminal determines that the CSFB service access fails.
Optionally, when the terminal initiates the CSFB service, the RRC layer of the terminal determines whether the network side allows the network side to access the CSFB service according to the ac-barringforscsfb. If so, the RRC layer of the terminal sends an RRC Connection Request (RRC Connection Request); otherwise, the NAS layer of the terminal is notified that the access of the CSFB service is failed, and the RRC layer of the terminal may also notify the NAS layer of the reason for the access failure.
Optionally, when the terminal initiates the CSFB service, the NAS layer of the terminal determines whether the network side allows the network side to access the CSFB service according to the ac-barringforscsfb provided by the RRC layer. If so, the NAS layer triggers the RRC layer to initiate an RRC connection establishment process, and the RRC layer sends an RRC connection Request (RRCConnection Request) to network side equipment, such as an eNB; otherwise, the NAS layer determines that the CSFB service fails to access.
In other embodiments of the present invention, the variable indicating whether the terminal is allowed to access the CSFB service in the access control information may be in other forms, for example, indicating with 1 bit, where 0 indicates that the terminal is allowed to access the CSFB service.
In this embodiment, the terminal may perform access control on the CSFB service according to access control information for the CSFB service sent by the network side device, so as to avoid that the idle terminal accesses a cell in the UMTS/GSM system through the CSFB service to reduce the load control capability of the UMTS/GSM system, facilitate the UMTS system to implement stable load control through the DSAC, and also facilitate avoiding congestion in the LTE system and the UMTS/GSM system.
Referring to fig. 2, a second embodiment of the present invention provides another access control method, which mainly includes:
step 201: and the terminal receives access control information, wherein the access control information comprises a probability threshold ac-BarringFactor for forbidding the terminal to access the CSFB service.
For example, the terminal receives a system broadcast message and reads the probability threshold aC-BarringConfig in the access control information in the message.
Step 202: and the terminal performs access control according to the probability threshold ac-BarringFactor.
Specifically, the value of the probability threshold ac-BarringFactor may be one of the following sets: p00, p05, p10, p15, p20, p25, p30, p40, p50, p60, p70, p75, p80, p85, p90, p 95. Wherein, the value of the ac-BarringFactor is pxy, which indicates that the value of the probability threshold is 0. xy. The following description will take an example in which the probability threshold received by the terminal is p05, that is, the value is 0.05.
When the terminal initiates the CSFB service, the RRC layer of the terminal randomly selects an access probability factor, which may be any value between 0 and 1. Assuming that the access probability factor is 0.01, the access probability factor is smaller than the probability threshold of 0.05, and the RRC layer of the terminal sends an RRC connection request for accessing the CSFB service to the network side device. If the access probability factor is 0.10, the access probability factor is greater than the probability threshold of 0.05, the RRC layer of the terminal determines that the access of the CSFB service is failed, and notifies the NAS layer of the terminal that the access of the CSFB service is failed, and the RRC layer of the terminal may also notify the NAS layer of the reason for the access failure.
Optionally, the RRC layer of the terminal starts a timer. During the running of the timer, the NAS layer cannot trigger the RRC layer to initiate the establishment process of the RRC connection; when the timer is stopped, the RRC layer notifies the NAS layer so that the NAS layer triggers the RRC layer to initiate an RRC establishment process again.
In this embodiment, the terminal may perform access control on the CSFB service according to access control information for the CSFB service sent by the network side device, so as to avoid that the idle terminal accesses a cell in the UMTS/GSM system through the CSFB service to reduce the load control capability of the UMTS/GSM system, facilitate the UMTS system to implement stable load control through the DSAC, and also facilitate avoiding congestion in the LTE system and the UMTS/GSM system.
Referring to fig. 3, a third embodiment of the present invention provides another access control method, which mainly includes:
step 301: when the network side device learns that the LTE network where the network side device is located or the target UMTS/GSM network to be backed off is overloaded, or learns that the target UMTS network to be backed off starts the DSAC, or learns that an emergency occurs, step 302 is executed.
Step 302: and the network side equipment sends access control information, wherein the access control information comprises an indication for prohibiting the terminal from accessing the CSFB service.
Specifically, the variable ac-barringforscsfb in the access control information is set to True or the variable indicating whether the terminal is allowed to access the CSFB service is set to 1. Optionally, the network side device sends the access control information to the terminal through a system broadcast message or a dedicated signaling.
In other embodiments of the present invention, after step 301, the network side device may determine a first probability threshold for prohibiting the terminal from accessing the CSFB service, and send access control information including the first probability threshold to the terminal through a system broadcast message or dedicated signaling. The lower the first probability threshold determined by the network side device is, the lower the possibility that the terminal accesses the service is, so that the network side device tends to determine the lower probability threshold when the terminal is prohibited from accessing the CSFB service, so as to limit the terminal from accessing the CSFB service.
In other embodiments of the present invention, when the network side device learns that the LTE network where the network side device is located or the target UMTS/GSM network to be backed down is not overloaded, or learns that the target UMTS network to be backed down is not starting the DSAC, or learns that the emergency is over, the network side device sends the access control information. The access control information may include an indication that the terminal is allowed to access the CSFB service, e.g., a variable ac-barringforscsfb in the access control information is set to False or a variable indicating whether the terminal is allowed to access the CSFB service is set to 0. The access control information sent by the network side device may also include a second probability threshold that the network side device determines to prohibit the terminal from accessing the CSFB service. The probability threshold determined by the network side device is related to the possibility of the terminal accessing the service, so that the network side device may determine a higher probability threshold when the terminal tends to be allowed to access the CSFB service.
Currently, the CSFB service is a blank zone for access control of the LTE system and the UMTS/GSM system, and a terminal of the LTE system accessing the UMTS/GSM system will cause an additional load on the UMTS/GSM system. In this embodiment, the network side device sends access control information for the CSFB service to the terminal, so that the terminal can perform access control on the CSFB service, and can prevent the idle terminal from accessing a cell in the UMTS/GSM system through the CSFB service to reduce the load control capability of the UMTS/GSM system, thereby facilitating the UMTS system to realize stable load control through the DSAC, and also facilitating the avoidance of congestion in the LTE system and the UMTS/GSM system. For example, the network side device of the LTE system may send access control information for the CSFB service through a system broadcast message in the entire network range, so that the terminal may obtain the access control information in time, that is, perform access control on the CSFB service in the LTE system, thereby making up the blank of the LTE system and the UMTS/GSM system, enabling load control of the UMTS/GSM to be really effective, and avoiding network congestion caused by a large amount of instantaneous CSFB voice services.
Referring to fig. 4, a fourth embodiment of the present invention provides an access control method, which mainly includes:
step 401: the network side equipment sends the access control information to the terminal.
In this step, the network side device may determine and send the access control information with reference to the third embodiment, which is not described herein again.
Step 402: the terminal receives the access control information, and when initiating the CSFB service, determines that the network side device allows the network side device to access the CSFB service according to the access control information, and then the terminal sends an RRC connection request, and carries a CSFB service identifier in the RRC connection request. For example, it is used as the cause value of the RRC connection request. The CSFB service identity may be represented by a specific symbol.
In this step, when the terminal initiates the CSFB service according to the first embodiment or the second embodiment, the RRC connection request is determined to be sent according to the access control information, which is not described herein again.
Step 403: the network side device receives the RRC connection request.
The network side device may determine that the terminal requests to access the CSFB service according to the CSFB service identifier in the RRC connection request message. For example, the eNB reads that the cause value of the RRC connection request is a symbol, and knows that the terminal requests to access the CSFB service.
Step 404: and the network side equipment judges whether the terminal is allowed to access the CSFB service or not. If yes, sending RRC connection establishment information to the terminal; otherwise, sending a rejection message to the terminal.
The network side device in this step may determine according to the actual situation, and the existing method for the network side device to determine whether to allow the terminal to access the CSFB service is applicable, and details are not described here.
The embodiment is suitable for systems such as LTE, LTE +, and the like, the terminal can perform access control on the CSFB service according to the access control information aiming at the CSFB service, which is sent by the network side equipment, so that the situation that the load control capability of the UMTS/GSM system is reduced because the terminal in an idle state is accessed to a cell in the UMTS/GSM system through the CSFB service is avoided, the stable load control of the UMTS system through the DSAC is favorably realized, the congestion in the LTE system and the UMTS/GSM system is favorably avoided, and meanwhile, the upgrading of the existing system is facilitated. In addition, the terminal in this embodiment informs the network side device of the CSFB service requested to be accessed through the RRC connection request, so that the network side device can know that the service requested to be accessed by the terminal is CSFB, and thus make a determination in time and accurately.
Corresponding to the method provided by the foregoing embodiment of the present invention, referring to fig. 5, a fifth embodiment of the present invention further provides a user equipment, where the user equipment may implement the access control method provided by the foregoing embodiment. The user equipment comprises a first receiving module 501 and a first control module 502.
The first receiving module 501 may be configured to receive access control information, where the access control information may be an indication for prohibiting a terminal from accessing a CSFB service, an indication for allowing the terminal to access the CSFB service, or a probability threshold for prohibiting the terminal from accessing a circuit domain and returning the CSFB service.
Optionally, the first control module 502 may be configured to determine that the access to the CSFB service fails when the access control information includes an indication that the terminal is prohibited from accessing the CSFB service. The module may also be configured to send the RRC connection request when the access control information includes an indication that the terminal is allowed to access the CSFB service.
Optionally, the first control module 502 may be configured to determine that the CSFB service access fails when the access control information includes a probability threshold for prohibiting the terminal from accessing a circuit domain fallback CSFB service, and the selected access probability factor is greater than the probability threshold. The module may be further configured to send an RRC connection request when the access control information includes a probability threshold for prohibiting the terminal from accessing a circuit switched fallback CSFB service, and an access probability factor selected by the terminal is less than or equal to the probability threshold.
Further, the first receiving module 501 may include: a first receiving submodule 5011 and an acquisition submodule 5012. The first receiving submodule 5011 is configured to receive a system broadcast message. The obtaining sub-module 5012 is configured to obtain access control information from the system broadcast message.
Further, the first control module 502 or other modules in the ue may select the access probability factor when initiating the CSFB service. Further, the first receiving module 501 and the first control module 502 may be fully or partially integrated into a user equipment, and used as an RRC layer of the user equipment to implement access control of the CSFB service of the user equipment, or directly used as the user equipment to implement access control of the CSFB service, or used as a separate entity connected to the user equipment. The user equipment of this embodiment may be applicable to an LTE system or an LTE + system, and the access control information may be provided for a network side device, such as an evolved nodeb eNB, where the access control information is used to control a CSFB service triggered by the user equipment.
In this embodiment, the user equipment may perform access control on the CSFB service according to access control information for the CSFB service sent by the network side equipment, so as to avoid an idle terminal from accessing a cell in the UMTS/GSM system through the CSFB service to reduce the load control capability of the UMTS/GSM system, facilitate the UMTS system to implement stable load control through the DSAC, and also facilitate avoiding congestion in the LTE system and the UMTS/GSM system.
Referring to fig. 6, a sixth embodiment of the present invention provides a network side device, where the network side device may implement the access control method provided in the foregoing embodiment.
The network side device includes a sending module 601, where the sending module 601 is configured to send access control information. If the load of the current LTE network or the target UMTS/GSM network to be backed off is overlarge, or the target UMTS network to be backed off starts the DSAC, or the emergency situation is known to occur, the access control information comprises an indication for prohibiting the terminal from accessing the CSFB service, or a second probability threshold for prohibiting the terminal from accessing the CSFB service; otherwise, the access control information includes an indication for prohibiting the terminal from accessing the CSFB service, or a first probability threshold for prohibiting the terminal from accessing the CSFB service.
The detailed description of the indication for prohibiting or allowing the terminal to access the CSFB service, and the detailed description of the probability threshold for prohibiting the terminal from accessing the CSFB service may refer to the contents of the access control method provided in the above embodiments, and are not described herein again; it should be noted that, when the network side sends the access control information, the access control information may be sent periodically, or may be sent to the terminal through a system broadcast message, and the way in which the network side sends the access control information is not limited in the present invention.
Further, the network side device may further include a second receiving module 602 and a second control module 603. The second receiving module 602 is configured to receive an RRC access request message sent by the terminal, where the access request message includes a CSFB service identifier. The second control module 603 is configured to send an RRC connection setup message when the network side device allows the terminal to access the CSFB service; otherwise, a rejection message is sent.
The network side device in this embodiment enables the terminal side to control access to the CSFB service by sending the access control information, thereby avoiding that the terminal of the LTE system accesses the UMTS/GSM system in an idle state, and also preventing congestion of the UMTS/GSM network node in time.
Corresponding to the above method and apparatus embodiments, a seventh embodiment of the present invention further provides an access control system, and as shown in fig. 7, the system may include a user equipment 701 and a network side device 702.
The user equipment 701 can implement the access control method provided in the first embodiment or the second embodiment, for example, the user equipment provided in the fifth embodiment is adopted.
The network side device 702 is configured to send access control information. If the load of the LTE network where the network side equipment is located or the target UMTS/GSM network to be backed off is too large, or the target UMTS network to be backed off starts the DSAC, or the emergency situation is known to occur, the access control information comprises an indication for prohibiting the terminal from accessing the CSFB service, or a first probability threshold for prohibiting the terminal from accessing the CSFB service; otherwise, the access control information includes an indication that the terminal is allowed to access the CSFB service, or a second probability threshold that the terminal is prohibited from accessing the CSFB service.
Corresponding to the above method and apparatus embodiments, the eighth embodiment of the present invention further provides another access control system, which may include a network side device 801 and a user equipment 802.
The network side device 801 may implement the access control method provided in the third embodiment or the fourth embodiment, for example, adopt the network side device provided in the sixth embodiment.
Optionally, the user equipment 802 may be configured to determine that the CSFB service access fails when the access control information includes a probability threshold for prohibiting the terminal from accessing the circuit switched fallback CSFB service, and the access probability factor selected by the terminal is greater than the probability threshold, or the access control information includes an indication for prohibiting the terminal from accessing the CSFB service.
Optionally, the user equipment 802 may be configured to send the RRC connection request when the access control information includes a probability threshold for prohibiting the terminal from accessing the circuit switched fallback CSFB service, and the access probability factor selected by the terminal is less than or equal to the probability threshold, or the access control information includes an indication for allowing the terminal to access the CSFB service.
The embodiment may be an LTE system or an LTE + system, the network side may be implemented by using an eNB, and the user equipment may be a terminal such as a mobile phone or a part of entities thereof. The user equipment can realize the access control of the CSFB service by receiving the access control information issued by the network side. The network side equipment sends access control information aiming at the CSFB service to the terminal, so that the terminal can carry out access control on the CSFB service, the idle state terminal can be prevented from being accessed into a cell in the UMTS/GSM system through the CSFB service to reduce the load control capability of the UMTS/GSM system, the stable load control of the UMTS system through the DSAC can be realized, and the congestion in the LTE system and the UMTS/GSM system can be avoided.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
Those skilled in the art will appreciate that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a computer-readable storage medium, where the program is stored in the computer-readable storage medium, and the computer-readable storage medium includes: ROM/RAM, magnetic disk, optical disk, etc.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.
The access control method, device and system provided by the embodiment of the present invention are described in detail above, and a specific example is applied in the text to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the idea of the embodiment of the present invention; meanwhile, for a person skilled in the art, according to the idea of the embodiment of the present invention, there may be a change in the specific implementation and application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (11)
1. An access control method, comprising:
the terminal receives the access control information;
the terminal initiates a Circuit Switched Fallback (CSFB) service;
when any one of the following conditions is met, the terminal determines that the CSFB service fails to be accessed: the access control information comprises a probability threshold for forbidding the terminal to access the CSFB service, and the access probability factor selected by the terminal is greater than the probability threshold; or, the access control information includes an indication for prohibiting the terminal from accessing the CSFB service; or, the terminal sends a radio resource control, RRC, connection request when any one of the following is satisfied: the access control information comprises a probability threshold for forbidding the terminal to access the circuit domain fallback CSFB service, and the access probability factor selected by the terminal is smaller than the probability threshold; or, the access control information includes a probability threshold for prohibiting the terminal from accessing a Circuit Switched Fallback (CSFB) service, and the access probability factor selected by the terminal is equal to the probability threshold; or, the access control information includes an indication that allows the terminal to access the CSFB service.
2. The method of claim 1, wherein the receiving access control information by the terminal comprises:
the terminal receives a system broadcast message, which includes access control information.
3. The method according to claim 1 or 2, wherein the RRC connection request comprises a CSFB service identity.
4. An access control method, comprising:
the network side equipment sends access control information;
if the load of a Long Term Evolution (LTE) network where a network side device is located or a target Universal Mobile Telecommunications System (UMTS)/global system for mobile communications (GSM) network to be backed off is too large, or the target UMTS network to be backed off starts a Digital Subscriber Access Control (DSAC), or an emergency situation is known to occur, the access control information comprises an indication for prohibiting a terminal from accessing a CSFB service, or a first probability threshold for prohibiting the terminal from accessing the CSFB service; otherwise, the access control information includes an indication that the terminal is allowed to access the CSFB service, or a second probability threshold that the terminal is prohibited from accessing the CSFB service.
5. The method of claim 4, wherein after the network-side device sends the access control information, the method further comprises:
the network side equipment receives a Radio Resource Control (RRC) connection request sent by a terminal, wherein the RRC connection request comprises a CSFB service identifier;
if the network side equipment allows the terminal to access the CSFB service, sending an RRC connection establishment message; otherwise, a rejection message is sent.
6. A user device, comprising:
the first receiving module is used for receiving the access control information;
a first control module, configured to determine that a CSFB service access fails when any one of the following conditions is met: the access control information comprises a probability threshold for forbidding the user equipment to access the circuit domain fallback CSFB service, and the selected access probability factor is greater than the probability threshold; or, the access control information includes an indication for prohibiting the user equipment from accessing the CSFB service; or, the method is used for sending the radio resource control RRC connection request when any one of the following conditions is satisfied: the access control information comprises a probability threshold for forbidding the user equipment to access the circuit domain fallback CSFB service, and the selected access probability factor is smaller than the probability threshold; or, the access control information includes a probability threshold for prohibiting the user equipment from accessing a Circuit Switched Fallback (CSFB) service, and the access probability factor selected by the user equipment is equal to the probability threshold; or, the access control information includes an indication that allows the user equipment to access the CSFB service.
7. The UE of claim 6, wherein the first receiving module comprises:
the first receiving submodule is used for receiving a system broadcast message;
and the acquisition submodule is used for acquiring the access control information from the system broadcast message.
8. An access control system, comprising: the network side device and the user equipment according to claim 6 or 7, wherein the network side device is configured to transmit access control information; if the load of the LTE network where the network side equipment is located or the target universal mobile telecommunications system UMTS/global system for mobile communications GSM network to be backed off is too large, or the target UMTS network to be backed off starts DSAC, or the emergency situation is known to occur, the access control information comprises an indication for forbidding the user equipment to access the CSFB service, or a first probability threshold for forbidding the user equipment to access the CSFB service; otherwise, the access control information includes an indication that the user equipment is allowed to access the CSFB service, or a second probability threshold that the user equipment is prohibited from accessing the CSFB service.
9. A network-side device, comprising:
a sending module, configured to send access control information;
if the load of the current LTE network or a target universal mobile telecommunications system UMTS/global system for mobile communications GSM network to be backed off is too large, or the target UMTS network to be backed off starts a DSAC, or an emergency situation is known to occur, the access control information comprises an indication for prohibiting a terminal from accessing a CSFB service, or a first probability threshold for prohibiting the terminal from accessing the CSFB service; otherwise, the access control information includes an indication that the terminal is allowed to access the CSFB service, or a second probability threshold that the terminal is prohibited from accessing the CSFB service.
10. The network-side device of claim 9, further comprising:
a second receiving module, configured to receive an RRC access request message sent by a terminal, where the access request message includes a CSFB service identifier;
a second control module, configured to send an RRC connection setup message when the network side device allows the terminal to access the CSFB service; otherwise, a rejection message is sent.
11. An access control system, comprising: the user equipment and the network side equipment according to claim 8 or 9, wherein the user equipment is configured to:
determining that CSFB service access fails when any one of the following is satisfied: the access control information comprises a probability threshold for forbidding the user equipment to access the circuit domain fallback CSFB service, and the access probability factor selected by the user equipment is greater than the probability threshold; or, the access control information includes an indication for prohibiting the user equipment from accessing the CSFB service; alternatively, the radio resource control, RRC, connection request is sent when any of the following is satisfied: the access control information comprises a probability threshold for forbidding the user equipment to access the circuit domain fallback CSFB service, and the access probability factor selected by the user equipment is smaller than the probability threshold; or, the access control information includes a probability threshold for prohibiting the user equipment from accessing a Circuit Switched Fallback (CSFB) service, and the access probability factor selected by the user equipment is equal to the probability threshold; or, the access control information includes an indication that allows the terminal to access the CSFB service.
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