CN103313424A - Method and equipment for UE access control - Google Patents

Abstract

The embodiment of the invention discloses a method and equipment for UE access control. The method comprises the following steps: after a radio resource control (RRC) connection is established successfully, network-side equipment judges whether an air interface data bearer can be established for UE according to contract information of the UE and current radio resource; if an air interface data bearer can be established for the UE, the network-side equipment determines that the UE is admitted successfully and establishes a corresponding air interface data bearer for the UE; and if an air interface data bearer cannot be established for the UE, the network-side equipment determines that the UE is not admitted successfully and triggers an RRC connection releasing process corresponding to the UE. According to the embodiment of the invention, simple access control can be realized, network overload can be avoided, the quality of service of the accessed UE is ensured, and the performance of a network system is guaranteed.

Description

UE access control method and equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and a device for controlling access of a UE.

Background

In an LTE (Long Term Evolution) system, access control for a UE (User Equipment) is divided into initial access control and bearer-based admission control.

First, initial access control.

The AC (Access Classes) of the UE are AC 0-AC 15, all the UE are allocated with one of AC 0-AC 9, and some UE with a specific high priority may be additionally allocated with one or more special Access Classes (AC 11-AC 15). When the network is congested, the network side broadcasts AC-bar (access class barring) information in a system message, and controls the access of the UE by introducing access probability in the process of establishing RRC (Radio Resource Control) connection; for example, when initiating an RRC connection establishment request, the UE determines whether the cell is prohibited from accessing according to the AC-bar information and its AC level; assuming that an AC-bar factor in the AC-bar parameter is 0.3, the UE does not belong to AC 11-AC 15, and the generated random number is not less than 0.3, the cell is considered to be forbidden, and the UE does not send an RRC connection establishment request message; otherwise, the UE may send an RRC connection setup request message to the network side.

Further, after receiving the RRC connection establishment request, the network side may send an RRC connection rejection message, which may result in a connection establishment failure; for example, when network congestion occurs, the network side performs differentiated treatment according to the connection establishment reason in the RRC connection establishment request message, and if the connection is emergency or high priority access AC 11-15, the network side allows the access, and rejects the access under other establishment reasons.

And secondly, admission control based on the bearing.

The admission control is used for judging whether to allow access or reject access when receiving a new radio bearer; when performing admission decision, information such as the overall status of radio resource status (including the used status of resources and the remaining status of resources), the QoS (Quality of Service) status of ongoing sessions, and the QoS requirement for requesting new radio bearers needs to be considered. Through admission control, under the condition of wireless resource permission, new bearers can be accessed as much as possible while QoS of accessed bearers is guaranteed, and QoS requirements of accessed bearers are guaranteed, so that the capacity of a system and the utilization rate of resources are improved.

An EPS (Evolved Packet System) bearer is divided into a default bearer and a dedicated bearer; the default bearer is a user bearer of Data and signaling meeting the default QoS, is established along with the establishment of a PDN (Packet Data Network) connection and is destroyed along with the removal of the PDN connection in order to provide a best effort IP connection bearer, and provides a permanent online IP transmission service for a user; dedicated bearers are established to provide some specific QoS transmission requirements (default bearers cannot be met).

Due to radio resource limitations, the eNB (i.e., base station) may reject the request for a default bearer; when the core network receives the default bearer establishment failure response, locally detach the UE; because the UE does not receive a DRB (Data Radio bearer) message corresponding to the default bearer, all EPS bearers context are locally deactivated, local detach is performed (when there is only one default bearer), and then an attach procedure is initiated until the attach attempt reaches the allowed maximum value.

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

in the existing LTE system, admission control is realized based on bearing, the granularity of admission control is fine, and the realization is more complex; for some private network systems, the service is single, and a complex admission control mechanism is not needed.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for UE access control, which are used for realizing simple access control and ensuring the performance of a network system; therefore, the embodiment of the invention provides the following technical scheme:

the embodiment of the invention provides an access control method of User Equipment (UE), which comprises the following steps: after the radio resource control RRC connection is successfully established, the network side equipment judges whether an air interface data bearer can be established for the UE according to subscription information of the UE and the current radio resource; if so, the network side equipment determines that the UE is successfully admitted and establishes a corresponding air interface data bearer for the UE; if not, the network side equipment determines that the UE is unsuccessfully admitted and triggers an RRC connection release process corresponding to the UE.

An embodiment of the present invention provides a network side device, including: the system comprises a judging module and a sending module, wherein the judging module is used for judging whether an air interface data bearer can be established for User Equipment (UE) according to subscription information of the UE and current radio resources after the Radio Resource Control (RRC) connection is successfully established; the processing module is used for determining that the UE is successfully admitted and establishing corresponding air interface data bearer for the UE when the judgment result is yes; and when the judgment result is negative, determining that the UE is unsuccessfully admitted, and triggering an RRC connection release process corresponding to the UE.

Compared with the prior art, the invention has at least the following advantages: in the embodiment of the invention, the access control mode of the UE is provided, so that simple access control can be realized, the overload condition of the network is avoided, the service quality of the accessed UE is ensured, and the performance of a network system is ensured.

Drawings

Fig. 1 is a flowchart illustrating an access control method for a UE according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating an access control method for a UE according to a second embodiment of the present invention;

fig. 3 is a flowchart illustrating an access control method for a UE according to a third embodiment of the present invention;

fig. 4 is a flowchart illustrating an access control method for a UE according to a fourth embodiment of the present invention;

fig. 5 is a schematic structural diagram of a network-side device according to a fifth embodiment of the present invention.

Detailed Description

Example one

In some private network systems, due to the characteristics of the private network system, access control and admission control of the private network system are not required to be as complicated as those of a mobile public network, but simple access control is also required to be realized, so that overload of the network is avoided, and the service quality of the accessed UE is ensured; based on this, the embodiment of the present invention provides an access control method for a UE, which is used to implement simple access control and ensure UE requirements and network system performance to a certain extent; in the embodiment of the invention, when the UE connection is established, the access judgment based on the UE can be carried out according to the congestion condition, and all bearing services are provided for the UE after the UE is accessed; as shown in fig. 1, the access control method of the UE may include the following steps:

step 101, after the RRC connection is successfully established, the network side device determines whether an air interface data bearer can be established for the UE according to the subscription information of the UE and the current radio resource; when the UE accesses the network side through an AP (Access Point) device, the network side device is an AP device.

In the embodiment of the invention, in order to establish connection with a network, UE needs to initiate an RRC connection establishment process and send an RRC connection establishment request message to network side equipment; after receiving an RRC connection establishment request message from UE, the network side equipment judges whether the current network is congested or not according to the current radio resource condition; if so, the network side equipment rejects the RRC connection establishment request message of the UE, and the RRC connection establishment is unsuccessful; if not, the network side device receives the RRC connection establishment request message of the UE, and the RRC connection establishment can be successful, and the specific RRC connection establishment process is not described herein again.

Further, after the RRC connection is successfully established, the network side device starts an authentication and security activation process for the UE, and obtains subscription information of the UE in the authentication and security activation process, where the subscription information of the UE includes an air interface data bearer corresponding to the UE; after obtaining the subscription information of the UE, the network side device may determine whether to establish an air interface data bearer required by all UEs for the UE according to the subscription information of the UE and in combination with the current radio resource status; if yes, executingstep 102; if not,step 103 is performed.

If the current wireless resources can meet the wireless resources required by all air interface data bearers required by the UE and recorded in the subscription information of the UE, determining that the air interface data bearers can be established for the UE; and if the current wireless resources cannot meet the wireless resources required by all air interface data bearers required by the UE recorded in the subscription information of the UE, determining that the air interface data bearers cannot be established for the UE.

Step 102, the network side device determines that the UE successfully accepts, and establishes all corresponding air interface data bearers for the UE, so that the UE obtains all air interface data bearer services required by the UE. In the embodiment of the present invention, the air interface data bearers are all air interface data bearers required by the UE recorded in the subscription information of the UE.

Step 103, the network side device determines that the UE admission is unsuccessful (the UE is denied access), and triggers an RRC connection release procedure corresponding to the UE.

In the embodiment of the invention, after the network side equipment triggers the RRC connection release process corresponding to the UE, the network side equipment also needs to inform the UE through an RRC connection release message that the RRC connection establishment process is allowed to be initiated again after the specified time is delayed; therefore, the UE needs to delay for a period of time before the RRC connection establishment procedure is allowed to be initiated again.

In the embodiment of the invention, subscription information of UE comprises a guaranteed scheduling rate (user guaranteed rate parameter) corresponding to the UE; based on this, the determining, by the network side device, whether an air interface data bearer can be established for the UE according to the subscription information of the UE and the current radio resource includes: the network side equipment judges whether enough wireless resources can be reserved or not by using the current wireless resources to ensure the guaranteed scheduling rate required by the UE; if so, determining that an air interface data bearer can be established for the UE; otherwise, determining that the air interface data bearer can not be established for the UE.

In the embodiment of the present invention, the subscription information of the UE includes a scheduling priority corresponding to the UE (a scheduling priority parameter for giving the UE with a high scheduling priority the right to preempt the UE radio resource with a low scheduling priority); based on this, the determining, by the network side device, whether an air interface data bearer can be established for the UE according to the subscription information of the UE and the current radio resource includes: the network side equipment judges whether an air interface data bearer can be established for the UE or not by using the current wireless resource and the wireless resource which can be occupied by the UE; the radio resources that the UE can seize are specifically: and the wireless resource corresponding to the UE with the priority lower than the scheduling priority.

The network side equipment establishing corresponding air interface data bearer for the UE comprises: and if the current wireless resource can not establish the corresponding air interface data bearer for the UE, the network side equipment establishes the corresponding air interface data bearer for the UE through the current wireless resource and the wireless resource corresponding to the UE with the priority lower than the scheduling priority.

Further, when there are a plurality of UEs with priorities lower than the scheduling priority, the radio resources corresponding to the UEs with priorities lower than the scheduling priority, which establish corresponding air interface data bearers for the UEs, are specifically: the network side equipment randomly selects wireless resources corresponding to the UE from all the UEs with the priorities lower than the scheduling priority; or the network side equipment selects the radio resource corresponding to the UE with the lowest priority from all the UEs with the priorities lower than the scheduling priority.

In this embodiment of the present invention, a network device establishes, for a UE, a corresponding air interface data bearer through a current radio resource and a radio resource corresponding to the UE whose priority is lower than a scheduling priority, and then further includes: and the network side equipment releases the wireless resources corresponding to the UE with the priority lower than the scheduling priority.

Example two

As shown in fig. 2, an embodiment of the present invention provides an access control method for a UE, where the method includes:

step 201, RRC connection establishment procedure.

In order to establish a connection with a network side (AP device in this embodiment), the UE needs to initiate an RRC connection establishment procedure; after receiving an RRC connection establishment request message of UE, AP equipment judges whether a current network is congested or not according to the current wireless resource condition, if so, the AP equipment rejects the connection establishment request of the UE, and the UE is allowed to initiate an RRC connection establishment process again after a period of time delay; if not, the RRC connection establishment is successful, and the AP device accepts the initial access of the UE, and proceeds to step 202.

Step 202, authentication and security activation process.

After the RRC connection is successfully established, the AP device starts the authentication and security activation process for the UE.

Step 203, the admission decision process.

The AP device determines whether all the required air interface data bearers can be established for the UE according to the subscription information (obtained during authentication and security activation) of the UE and in combination with the current radio resource status.

Step 204, air interface data bearer establishment process.

When the judgment result is that all the air interface data bearers required by the UE can be accepted, all the corresponding air interface data bearers are established through an RRC connection reconfiguration process; otherwise, the admission is unsuccessful, the UE is informed through an RRC connection release message, and the UE is allowed to initiate the RRC connection establishment process again after a period of time delay.

Based on the above processing procedure, once the UE successfully accesses the AP device, all the air interface data bearer services required by the UE can be obtained.

EXAMPLE III

As shown in fig. 3, an embodiment of the present invention provides an access control method for a UE, where an AP device performs admission control based on a scheduling priority parameter of the UE, and the method includes:

step 301, RRC connection setup procedure.

In order to establish a connection with the network side (AP device in this embodiment), the UE1 needs to initiate an RRC connection establishment procedure; after receiving the RRC connection establishment request message of the UE1, the AP device determines whether the current network is congested according to the current radio resource condition, and if so, rejects the connection establishment request of the UE1, and the UE1 needs to delay for a period of time before allowing the RRC connection establishment procedure to be initiated again; if not, the RRC connection establishment is successful and the AP device accepts the initial access of the UE1, step 302.

Step 302, authentication and security activation process.

After the RRC connection is successfully established, the AP device starts the authentication and security activation process for the UE 1; the AP device may obtain subscription information of the UE1 through the authentication process, where the subscription information includes a scheduling priority parameter of the UE1, and the scheduling priority parameter is used to indicate that the UE1 is a high-priority scheduling user and has a right to preempt a radio resource.

Step 303, the admission decision process.

The AP device, according to the subscription information of the UE1, and in combination with the current radio resource status, determines whether all air interface data bearers required by the UE1 can be established (the air interface data bearers required to be established by the UE1 can be obtained from the subscription information); the AP device determines that the network is congested at this time, and cannot establish all air interface data bearers required by the UE1 under the existing wireless resource condition; however, since the scheduling priority of the UE1 is high and the scheduling priority of the UE2 is low, the AP device admission decision result is: the UE1 preempts the radio resource of the UE 2; the radio resource of the UE2 needs to be released, and an air interface data bearer is established for the UE 1.

It should be noted that the selection of the UE2 may be based on a certain algorithm, such as random selection among all UEs with low scheduling priority, or selection of a UE with low activity among all UEs with low scheduling priority, or selection of a UE with the lowest priority among all UEs with low scheduling priority.

In step 304, the AP device releases the air interface resource of the UE2 through the RRC connection release message.

Step 305, air interface data bearer establishment procedure. The AP device establishes all air interface data bearers required by the UE1 through the RRC connection reconfiguration message.

Based on the above processing procedure, once the UE1 successfully accesses the AP device, all the air interface data bearer services required by the UE can be obtained.

Example four

As shown in fig. 4, an embodiment of the present invention provides an access control method for a UE, where an AP device performs admission control based on a guaranteed rate parameter of the UE, and the method includes:

step 401, RRC connection setup procedure.

In order to establish a connection with a network side (AP device in this embodiment), the UE needs to initiate an RRC connection establishment procedure; after receiving the RRC connection establishment request message of the UE, the AP device determines whether the current network is congested according to the current radio resource condition, and if so, rejects the connection establishment request of the UE, and the UE1 needs to delay for a period of time before allowing the RRC connection establishment procedure to be initiated again; if not, the RRC connection establishment is successful, and the AP device accepts the initial access of the UE, and proceeds to step 402.

Step 402, authentication and security activation process.

After the RRC connection is successfully established, the AP equipment starts the processes of authentication and security activation on the UE; the AP device may obtain subscription information of the UE through the authentication process, where the subscription information includes a guaranteed rate parameter of the UE, such as 2Mbit/s, that is, it needs to guarantee that the UE has at least a scheduling rate of 2 Mbit/s.

Step 403, the admission decision process.

The AP equipment judges the current wireless resource condition, finds that the current load is heavy, cannot reserve enough wireless resources to ensure the 2Mbit/s guaranteed scheduling rate required by the UE, and fails in admission.

In step 404, the AP device sends an RRC connection release message to the UE, and the UE needs to delay a period of time before allowing the RRC connection establishment procedure to be initiated again, where the period of time may be notified to the UE through the RRC connection release message or may be predefined.

EXAMPLE five

Based on the same inventive concept as the above method, an embodiment of the present invention further provides a network-side device, as shown in fig. 5, where the network-side device includes:

a determiningmodule 51, configured to determine, according to subscription information of a user equipment UE and a current radio resource, whether an air interface data bearer can be established for the UE after an RRC connection is successfully established; aprocessing module 52, configured to determine that the UE is successfully admitted and establish a corresponding air interface data bearer for the UE when the determination result is yes; and when the judgment result is negative, determining that the UE is unsuccessfully admitted, and triggering an RRC connection release process corresponding to the UE.

Theprocessing module 52 is further configured to, after triggering the RRC connection release procedure corresponding to the UE, notify, through an RRC connection release message, that the UE needs to delay a specified time before the RRC connection establishment procedure is allowed to be initiated again.

The subscription information comprises a guaranteed scheduling rate corresponding to the UE; the determiningmodule 51 is further configured to determine whether sufficient radio resources can be reserved to ensure the guaranteed scheduling rate required by the UE by using the current radio resources; if so, determining that an air interface data bearer can be established for the UE; otherwise, determining that an air interface data bearer cannot be established for the UE.

The subscription information comprises a scheduling priority corresponding to the UE; the determiningmodule 51 is further configured to determine whether an air interface data bearer can be established for the UE by using the current radio resource and the radio resource that the UE can occupy; the radio resources that the UE can seize specifically are: and the wireless resource corresponding to the UE with the priority lower than the scheduling priority.

Theprocessing module 52 is further configured to, if the current radio resource cannot establish a corresponding air interface data bearer for the UE, establish a corresponding air interface data bearer for the UE through the current radio resource and the radio resource corresponding to the UE with the priority lower than the scheduling priority.

When there are multiple UEs with priorities lower than the scheduling priority, the radio resources corresponding to the UEs with the priorities of corresponding air interface data bearers lower than the scheduling priority, which are established for the UEs, are specifically: the wireless resources corresponding to the UE randomly selected from the UEs with the priorities lower than the scheduling priority; or selecting the radio resource corresponding to the UE with the lowest priority from all the UEs with the priorities lower than the scheduling priority.

Theprocessing module 52 is further configured to release the radio resource corresponding to the UE with the priority lower than the scheduling priority after establishing a corresponding air interface data bearer for the UE through the current radio resource and the radio resource corresponding to the UE with the priority lower than the scheduling priority.

The modules of the device can be integrated into a whole or can be separately deployed. The modules can be combined into one module, and can also be further split into a plurality of sub-modules.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.

Those skilled in the art will appreciate that the drawings are merely schematic representations of one preferred embodiment and that the blocks or flow diagrams in the drawings are not necessarily required to practice the present invention.

Those skilled in the art will appreciate that the modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, and may be correspondingly changed in one or more devices different from the embodiments. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims (14)

1.An access control method of a User Equipment (UE), comprising:

after the radio resource control RRC connection is successfully established, the network side equipment judges whether an air interface data bearer can be established for the UE according to subscription information of the UE and the current radio resource;

if so, the network side equipment determines that the UE is successfully admitted and establishes a corresponding air interface data bearer for the UE;

if it is notOtherwise, the network side equipment determines that the UE is unsuccessfully admitted and triggers an RRC connection release process corresponding to the UE.

2.The method of claim 1, wherein the network side device triggers an RRC connection release procedure corresponding to the UE, and thereafter further comprising:

and the network side equipment informs the UE of allowing to initiate the RRC connection establishment process again after delaying the designated time through an RRC connection release message.

3.The method of claim 1, wherein the subscription information includes a guaranteed scheduling rate corresponding to the UE;

the method for the network side equipment to judge whether to establish an air interface data bearer for the UE according to the subscription information of the UE and the current wireless resource comprises the following steps:

the network side equipment judges whether enough wireless resources can be reserved or not by using the current wireless resources to ensure the scheduling rate required by the UE; if so, determining that an air interface data bearer can be established for the UE; otherwise, determining that an air interface data bearer cannot be established for the UE.

4.The method of claim 1, wherein the subscription information includes a scheduling priority corresponding to the UE;

the method for the network side equipment to judge whether to establish an air interface data bearer for the UE according to the subscription information of the UE and the current wireless resource comprises the following steps:

the network side equipment judges whether an air interface data bearer can be established for the UE or not by using the current wireless resource and the wireless resource which can be occupied by the UE;

the radio resources that the UE can seize specifically are: priority lower than the scheduling priorityAnd radio resources corresponding to the UE of the level.

5.The method of claim 4, wherein the establishing, by the network side device, a corresponding air interface data bearer for the UE includes:

and if the current wireless resource cannot establish a corresponding air interface data bearer for the UE, the network side equipment establishes the corresponding air interface data bearer for the UE through the current wireless resource and the wireless resource corresponding to the UE with the priority lower than the scheduling priority.

6.The method according to claim 5, wherein, when there are a plurality of UEs with priorities lower than the scheduling priority, the specific radio resources corresponding to the UEs that establish corresponding air interface data bearers with priorities lower than the scheduling priority for the UEs are:

the network side equipment randomly selects wireless resources corresponding to the UE from all the UEs with the priorities lower than the scheduling priority; or,

and the network side equipment selects the radio resource corresponding to the UE with the lowest priority from all the UEs with the priorities lower than the scheduling priority.

7.The method according to claim 5 or 6, wherein the network side device establishes a corresponding air interface data bearer for the UE through a current radio resource and a radio resource corresponding to the UE having a priority lower than the scheduling priority, and then further comprising:

and the network side equipment releases the wireless resources corresponding to the UE with the priority lower than the scheduling priority.

8.A network-side device, comprising:

a judging module for controlling wireless resourcesAfter the RRC connection is successfully established, judging whether an air interface data bearer can be established for the UE according to subscription information of User Equipment (UE) and current wireless resources;

the processing module is used for determining that the UE is successfully admitted and establishing corresponding air interface data bearer for the UE when the judgment result is yes; and when the judgment result is negative, determining that the UE is unsuccessfully admitted, and triggering an RRC connection release process corresponding to the UE.

9.The network-side device of claim 8,

the processing module is further configured to notify, through an RRC connection release message, that the UE needs to allow the RRC connection establishment procedure to be initiated again after a specified time is delayed after triggering the RRC connection release procedure corresponding to the UE.

10.The network-side device of claim 8, wherein the subscription information includes a guaranteed scheduling rate corresponding to the UE;

the judging module is further configured to judge whether sufficient radio resources can be reserved to guarantee a guaranteed scheduling rate required by the UE by using the current radio resources; if so, determining that an air interface data bearer can be established for the UE; otherwise, determining that an air interface data bearer cannot be established for the UE.

11.The network-side device of claim 8, wherein the subscription information includes a scheduling priority corresponding to the UE;

the determining module is further configured to determine whether an air interface data bearer can be established for the UE by using the current radio resource and the radio resource that the UE can seize;

the radio resources that the UE can seize specifically are: u with priority lower than the scheduling priorityE, corresponding radio resources.

12.The network-side device of claim 11,

the processing module is further configured to establish, if the current radio resource cannot establish a corresponding air interface data bearer for the UE, a corresponding air interface data bearer for the UE through the current radio resource and the radio resource corresponding to the UE having a priority lower than the scheduling priority.

13.The network-side device of claim 12, wherein, when there are multiple UEs with priorities lower than the scheduling priority, the specific radio resources corresponding to the UEs with priorities of corresponding air interface data bearers lower than the scheduling priority for the UEs are:

the wireless resources corresponding to the UE randomly selected from the UEs with the priorities lower than the scheduling priority; or selecting the radio resource corresponding to the UE with the lowest priority from all the UEs with the priorities lower than the scheduling priority.

14.The network-side device of claim 12 or 13,

the processing module is further configured to release the radio resource corresponding to the UE with the priority lower than the scheduling priority after establishing a corresponding air interface data bearer for the UE through the current radio resource and the radio resource corresponding to the UE with the priority lower than the scheduling priority.

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