WO2008134982A1

WO2008134982A1 - A controlling method, system and device for accessing a private node b

Info

Publication number: WO2008134982A1
Application number: PCT/CN2008/070853
Authority: WO
Inventors: Michael Roberts; Johan Johansson; Mingjiang Xie
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-04-30
Filing date: 2008-04-30
Publication date: 2008-11-13
Also published as: CN101299870A; CN101299870B

Abstract

A controlling method, system and device for accessing a private node B are disclosed in the embodiments according to the present invention, in which the method is that: the network side apparatus determines the distance between a user equipment and the private node B after receiving a location update request sent by the user equipment; according to the determination result, adjusting the public land mobility network PLMN searching period of the user equipment and notifying it to the user equipment, so that the user equipment performs the PLMN searching according to the adjusted searching period. The method, system and device can flexibly adjust the searching period that the UE performs PLMN searching according to the current location of the UE, thereby ensuring that the UE can find and access a private node B in time when it is near to the private node B, and perform PLMN searching as little as possible when it is far from a private node B, so as to save the power consumption of the UE. The embodiments according to the present invention also provide the corresponding controlling means aiming at the question of the mobility limitation aspect.

Description

Control method, system and device for accessing private base station

The present invention relates to the field of mobile communication technologies, and in particular, to a control method, system and apparatus for accessing a private base station.

Background technique

Currently, mobile communication technologies are rapidly evolving as people demand more and more. With the continuous growth of third-generation mobile communication technology (3G) users and the deepening of Long Term Evolution (LTE) research, as a typical representative of private base stations, indoor base station (Home NodeB, hNB) or indoor access Point (AP) is receiving more and more attention. A private base station refers to a small, small base station for home or office use. It may be completely private. It can also be opened to the public for use with different priorities and permissions. Its ownership is private, not government or Operator; its use may be a small range of users, but also a wide range of users. Taking hNB or AP as a private base station as an example, using hNB or AP to implement wireless access, can better utilize existing network resources, better protect the cost of network equipment operators, and integrate mobile access networks and fixed connections. The respective advantages of entering the network, a typical indoor access scenario is shown in Figure 1.

Referring to FIG. 1 , a UE (User Equipment) is a mobile terminal access device, and an hNB or an AP as a private base station routes to an access gateway through an access network to enter a universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS) or LTE Unified Territorial Radio Access Network (UTRAN). The access network may be a fixed network IP local area network or a DSL access network. Therefore, compared with the traditional macro base station access mode, the access scenario shown in FIG. 1 is more flexible and can be fully utilized. Existing fixed network resources.

Since the indoor access scenario shown in Figure 1 can provide high-speed, low-cost services, it is increasingly receiving attention from international mainstream operators and international equipment manufacturing giants. Accompanying Such attention has been continuously improved. In the prior art, various access technologies based on indoor access scenarios have also been proposed.

Access technology one:

In the access technology, the UE searches for the AP by carrying the information of the AP in the broadcast message of the macro cell, and implements the access according to the search result.

Although this method can achieve indoor access, the number of APs in a macro cell tends to be large, which causes the macro cell broadcast information to be seriously overloaded.

Access technology two:

In such an access technology, the user is required to switch on and off once after entering the coverage of the indoor base station, so as to prompt the UE to perform cell selection to camp in the cell of the indoor base station, thereby implementing access as a private base station. AP.

The disadvantages of this type of access technology are: There is no guarantee that the UE will definitely camp on the cell; in addition, the operation mode of the switch adopts frequent manual intervention. Therefore, in practical applications, it is not recommended to use this technology to achieve indoor connection. In.

At the same time, there is an access technology related to domestic roaming in the prior art. For the convenience of the description, in the following description, the AP is used as a private network as an example. The access technologies are as follows:

In the prior art, the UE can perform domestic roaming based on a Public Land Mobile Network (PLMN) identifier (ID), where the PLMN ID is changed by a mobile country code (Mobi) Le Country Code (MCC) and Mobi le Network Code (MNC) consist of 3 bytes and 6 digits. The PLMN ID can be used to implement the PLMN selection mechanism to achieve domestic roaming. The definition of domestic roaming is as follows: The MCCs in the PLMN ID are the same, and the MNCs are different; the corresponding international roaming is defined as: The MCCs in the PLMN ID are different.

Based on the above definition of domestic roaming, the UE has a corresponding mechanism: when the UE is in another PLMN area in the same country as the Home PLMN (HPLMN) (ie, when doing domestic roaming), It will periodically search for its HPLMN. In other words, in the automatic network selection mode, when the UE is in the visited PLMN (Vi sit PLMN, VPLMN), the UE always preferentially selects the PLMN with the highest priority, that is, the HPLMN, to access. The definition of the HPLMN is based on the UE's International Mobile Subscriber Identity (IMSI). If the first MCC/MNC of the IMSI is consistent with the current PLMN ID, this is the UE's HPLMN.

It can be seen from the above description that based on the principle of domestic roaming described above, a PLMN capable of manually/automatically accessing an AP based on a PLMN search can be performed, and people are also working on implementing the technology, but even if such a technology is implemented, Still have the following problems in practical applications:

1. Based on domestic roaming, the UE will frequently perform PLMN search. The period for performing the search is 6 minutes to 8 hours, generally 6 minutes is the minimum search period, and 60 minutes is the default search period. In the prior art, the fixed time value is used as the search period, and once fixed, the PLMN search is performed according to the search period, so that the search period cannot be reasonably adjusted in combination with the location of the UE.

2. The above-mentioned access technology based on domestic roaming for private networks does not take into account the problem of mobility restrictions, and cannot avoid the UE accessing the corresponding private network.

Summary of the invention

In view of this, the technical problem to be solved by the embodiments of the present invention is to provide a control method, system and device for accessing a private base station, so as to provide a reasonable search period for the private base station, and avoid the UE consumption caused by the unreasonable search period. The problem of large power or untimely search.

To achieve the above object, an embodiment of the present invention provides a control method for accessing a private base station, where the method includes:

When the user equipment enters the location area RA/routing area LA where the first macro cell is located, the network side device receives the location update request initiated by the user equipment, where the first macro cell and the cell covered by the private base station are adjacent to each other. ;

Determining a distance of the user equipment from the private base station;

Adjusting the public land mobile network PLMN search period of the user equipment according to the determination result And notifying the user equipment, so that the user equipment performs according to the adjusted search period.

PLMN search.

The embodiment of the invention further provides a control system for accessing a private base station, the system comprising: a network side device, wherein:

The network side device is configured to: when the user equipment enters the location area RA/the routing area LA where the first macro cell is located, receive the location update request initiated by the user equipment, where the first macro cell and the private base station are covered Adjacent to the cell;

The network side device is further configured to determine a distance of the user equipment from the private base station; and, according to the determination result, adjust a public land mobile network PLMN search period of the user equipment, and notify the user equipment, The user equipment is caused to perform a PLMN search according to the adjusted search period.

The embodiment of the present invention further provides a control device for accessing a private base station, where the device includes: a receiving unit, configured to receive a location update request sent by the user equipment;

a determining unit, configured to determine a distance from the private base station that the user equipment is allowed to access; an adjusting unit, configured to determine a determination result of the unit, and adjust a PLMN search period of the user equipment; and a notification unit, configured to adjust the The PLMN search period is notified to the user equipment.

In the embodiment of the present invention, in order to consider the problem related to the mobility limitation, thereby avoiding the UE accessing the corresponding private network, the following technical solutions are also provided:

An embodiment of the present invention provides a control method for accessing a private base station, where the method includes: a private base station receiving a connection request sent by a user equipment, where the connection request carries an identifier of the user equipment;

Obtaining relevant subscription information of the user equipment and the private base station;

Determining, according to the subscription information, whether the user equipment is allowed to access the private base station; and the private base station controls access of the user equipment according to the determination result.

The embodiment of the present invention further provides a control system for accessing a private base station, where the system includes: a network side device, where: The network side device is used to:

Saving relevant subscription information of the user equipment and the private base station;

After receiving the message sent by the private base station, the private base station sends a message to the network side device after receiving the connection request sent by the user equipment, and notifies the network side device to determine whether the user equipment is allowed to access the device. Private base station; and

Obtaining, by the user equipment identifier and the identity of the private base station, the subscription information of the user equipment and the private base station from the database that holds the subscription information, and determining, according to the subscription information, whether the user equipment is allowed to access the private base station, and The judgment result informs the private base station, wherein the private base station determines whether to connect the user terminal to the base station according to the received judgment result.

The embodiment of the present invention further provides a control device for accessing a private base station, where the device includes: a determining unit, configured to: after receiving the message sent by the private base station, according to the user equipment identifier and the identity of the private base station itself, Obtaining subscription information of the user equipment and the private base station, determining, according to the subscription information, whether the user equipment is allowed to access the private base station, and notifying the private base station of the determination result.

The embodiment of the invention further provides a private base station, the base station comprising:

a receiving unit, configured to receive a connection request sent by the user equipment;

a determining unit, configured to acquire, according to the user equipment identifier in the connection request, subscription information with the user equipment, to check whether the user equipment that is currently requested to access is a user equipment that is allowed to access, and the notification unit is configured to: The result of the judgment is notified to the user equipment.

The embodiment of the present invention further provides a control method for accessing a private base station, and determines whether the current state of the private base station is in a state of not being located in the 00S of the coverage of the macro cell or in the state of the IS within the coverage of the macro cell, or The IS/00S state of the part of the IS and the 00S, when determining that the private base station is in the 00S state, allocates a separate routing area code LAC or a routing area code RAC to the private base station; the method includes:

When the user equipment requests access to the private base station, determining that the user equipment is not allowed to access the private base station, prompting the user equipment according to the state of the private base station The reason for the limitation is to switch the user equipment to the macro cell.

The embodiment of the present invention further provides a control device for accessing a private base station, where the device includes: a state determining unit, configured to determine whether the private base station is not located within the coverage of the macro cell

The state of 00S is still in the state of IS in the coverage of the macro cell, or in the IS/00S state of part IS and part 00S;

An identifier allocation unit, configured to allocate a separate routing area identifier to the private base station after the state determining unit determines that the private base station is currently in the 00S state;

The error cause prompting unit is configured to: after the private base station determines that the user equipment is not allowed to access, according to the state of the private base station, prompt the user equipment for the reason for the limited service.

Compared with the prior art, the beneficial effects of the embodiments of the present invention are:

1. The UE can flexibly adjust the search period of the PLMN search according to the current location of the UE, so as to ensure that the private base station can be found and accessed when the UE is close to the private base station, and when it is away from the private base station, The PLMN search is performed as little as possible, thereby saving the power consumption of the UE.

2. The embodiment of the present invention provides a corresponding control method for the problem of mobility limitation, so that the private base station can avoid the access of the user equipment that is not allowed, and can provide the user equipment when the user equipment is not allowed to access. User equipment corresponding prompts to ensure network security and improve service quality.

DRAWINGS

Figure 1 is a schematic diagram of a typical indoor access scenario;

2 is a flowchart of a method according to Embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of a scenario in which the method shown in FIG. 2 can be specifically applied;

4 is a flowchart of a method provided by Embodiment 2 of the present invention;

FIG. 5 is a schematic diagram of a scenario in which the method shown in FIG. 4 can be specifically applied;

6 is a flowchart of a method provided in Embodiment 3 of the present invention;

FIG. 7 is a flowchart of a method according to Embodiment 4 of the present invention; 8 is a flowchart of a handover method according to Embodiment 4 of the present invention;

9 is a flowchart of another handover method according to Embodiment 4 of the present invention;

FIG. 10 is a schematic diagram showing a scenario in which an AP is located in a macro cell service coverage area;

11a and 1b are schematic diagrams of a scenario in which an AP is located in a service coverage area of a corresponding type of macro cell according to an embodiment of the present invention;

FIG. 12 is a flowchart of a method provided in Embodiment 5 of the present invention.

detailed description

The embodiment of the present invention provides a control method, system, and device for accessing a private base station, where the scenario is based on: the UE may select a PLMN based on domestic roaming between the cells covered by the macro cell and the private base station, thereby being idle. The (Idle) state finds the network corresponding to the private base station and implements access to the private base station.

For the convenience of the description, in the description of the various embodiments of the present invention, the AP is taken as a private base station as an example. In these embodiments, other private base stations including the hNB may of course be used without affecting the present invention. Implementation.

In order to satisfy the above scenario, in the embodiment of the present invention, the following configuration for the AP network is performed:

1. For a new AP network, consider assigning each operator a separate PLMN ID for the operation of the AP network. Although there are not many PLMN IDs that can be allocated, it should be sufficient for most cases. .

1. For users who have purchased an AP, they can send their new SIM card to replace their PLMN. If the user intends to use the old SIM card, they can change their PLMN by tampering with the IMSI in the SIM card. The HPLMN of the UE used by the user is the PLMN of the AP network purchased by the user;

3. The PLMN that is separately allocated for the AP network is set to HPLMN, that is, with this setting, the PLMN of the macro cell opposite to the AP network is set to VPLMN, so that based on the setting, the UE will be based on the domestic Roaming PLMN search (search), and find the AP network and access in the idle (Idle) state.

In the embodiment of the present invention, a method for controlling access to a private base station is provided, where First consider the following questions: If the search period is set to a short time, such as 6 minutes, a more frequent PLMN search will be performed, and each time a PLMN search is performed, a large amount of power in the UE will be consumed, thus causing the UE to leave the AP. After the network, the UE's power is consumed in a large amount due to continuous search for the HPLMN. Conversely, if the search period is set to be long, the AP may not be found in time when the UE enters the AP network coverage area, thereby affecting the quality of service.

Therefore, in the control method provided by the embodiment, the network side determines the proximity of the UE to the AP, and automatically adjusts the PLMN search period of the UE according to the determination result, so that when the UE moves away from the AP, the search period is adjusted. Long, until the maximum or closed PLMN search is reached; and when the UE is close to the AP, the search period is shortened.

Next, the control method as described above will be described in detail using two embodiments.

Embodiment 1:

Referring to FIG. 2, in a case where the network side determines that the UE is close to the AP, the method provided in Embodiment 1 of the present invention specifically includes:

Step 201: When the UE enters a location area (RA)/routing area (LA) where the first macro cell is located, the UE initiates an RA/LA location update (RAU/LAU) request; where the first macro cell and the permission station The cells covered by the AP accessed by the UE are adjacent to each other;

Step 202: After receiving the RAU/LAU request, the network device (CN) on the network side determines that the UE is currently closer to the AP that is allowed to access the UE, and shortens the PLMN search period of the UE according to the determination result.

In the embodiment of the present invention, the network side has pre-stored the corresponding relationship between each AP and its neighboring macro cell. According to the corresponding relationship, the network side may implement the foregoing determining step, specifically: the network side obtains the current location of the UE. The RA/LA of the macro cell, and determining the AP corresponding to the UE, and determining the RA/LA of the macro cell adjacent to the AP corresponding to the UE according to the foregoing correspondence;

Determining whether the RA/LA of the macro cell in which the UE is currently located is close to or overlapping with the RA/LA of the macro cell adjacent to the AP, and if yes, determining that the UE is approaching the AP;

Of course, in other embodiments of the present invention, the foregoing manner may also be implemented to determine whether the UE is determined. Being judged close to the AP does not affect the implementation of the present invention;

In addition, in the embodiment of the present invention, the degree of the PLMN search period is reduced according to the foregoing determination result, so that the closer the distance is to the AP, the smaller the search period is. Of course, only a fixed value may be used. The target value of the search period is reduced, neither of which affects the implementation of the present invention.

Step 203: The CN notifies the UE of the modified PLMN search period, and the UE searches for the PLMN according to the PLMN search period, and searches for and accesses the AP when it is in the coverage of the AP as the HPLMN.

In the embodiment of the present invention, the CN may use the data downloading method, such as the short message mode, to notify the UE of the modified PLMN search period, and may also implement the notification by other means.

Referring to FIG. 3, the method shown in FIG. 2 can be specifically applied to the two scenarios shown in FIG. 3, specifically:

Scenario 1: The UE directly enters the AP from the macro cell that is adjacent to the AP. The UE is configured to be in the AP network. Therefore, when the UE enters the AP from the macro cell, the UE is equivalent to the UE. Returning from the VPLMN to its HPLMN in domestic roaming;

Scenario 2: The UE returns from its neighboring hNB to its own hNB; such a scenario means that the UE has selected its own HPLMN, and the UE needs to do: to perform cell reselection to return its own HPLMN; Of course, the scenario is based on the assumption that the neighboring hNB has added the UE's own hNB to its neighbor cell list, thereby enabling the UE to reselect its own mouse.

Embodiment 2: Referring to FIG. 4, when the network side determines that the UE is far away from the AP, the method provided by Embodiment 2 of the present invention specifically includes:

Step 401: The UE initiates a RAU/LAU request when the UE leaves the RA/LA where the first macro cell is located, where the first macro cell and the cell covered by the AP that the UE is allowed to access are adjacent to each other;

Step 402: After receiving the RAU/LAU request, the CN on the network side determines that the UE is currently far away from the AP that allows it to access, and according to the determination result, the PLMN search period of the UE is lengthened; In the embodiment of the present invention, the determining process in step 402 can be implemented in a manner similar to that described in the first embodiment. Similarly, similar to the first embodiment, the PLMN search period is determined according to the determination result. The extent of the increase, so that the further away from the AP, the greater the search period; of course, only a fixed value can be used as the target value of the growth search period, neither of which affects the implementation of the present invention.

Step 403: The CN notifies the UE of the modified PLMN search period, and the UE searches for the PLMN according to the PLMN search period, and searches for and accesses the AP when it is in the coverage of the AP as the HPLMN.

In the embodiment of the present invention, the modified PLMN search period may be notified to the UE by using the data downloading manner described in the first embodiment or other manners.

Referring to FIG. 5, the method shown in FIG. 4 can be specifically applied to the two scenarios shown in FIG. 5, specifically:

Scenario 3: The UE leaves its hNB and enters its neighboring hNB, or the UE leaves its own HPLMN, but is still in the coverage of its neighboring macro cell or in the RA of the neighboring macro cell.

Scenario 4: The UE is not in the coverage of the LA/RA to which the neighboring macro cell belongs.

Corresponding to the foregoing Embodiment 1 and Embodiment 2, the embodiment of the present invention further provides a corresponding control system for accessing a private base station, including a network side device and a UE, where:

When the UE is used to enter the RA/LA where the first macro cell is located, the UE initiates a location update request; where the first macro cell is adjacent to a cell covered by an AP that allows the UE to access;

The network side device is configured to: after receiving the location update request, determine, to obtain a near-far situation of the UE that is currently allowed to access the UE, and adjust a PLMN search period of the UE according to the determination result, and notify the UE Make the appropriate adjustments.

The network side device may be a CN, and the network side may determine, by determining whether the RA/LA of the macro cell where the UE is currently located is close to or overlapping with the RA/LA of the macro cell adjacent to the AP. The near and far situation with the AP.

Similarly, the embodiment of the present invention also seeks to protect the network side device described in the above system. In addition to the unit that implements the network processing function, the network side device further includes:

a receiving unit, configured to receive a location update request sent by the UE;

a determining unit, configured to determine a far-and-close situation of the UE that is currently allowed to access the AP; the adjusting unit is configured to determine a determination result of the unit, and adjust a PLMN search period of the UE; and a notification unit, configured to: use the adjusted PLMN search period Notify the UE.

Of course, the unit described in the above network side device can also exist as a separate control device.

In the embodiment of the present invention, in addition to providing the control method for controlling the PLMN search period as described above, a control method for determining whether the UE is allowed to access the access private base station is provided. And the fourth embodiment describes the method in detail:

In the third embodiment and the fourth embodiment, the CN device on the network side is used to determine whether the UE is an authorized user that is allowed to access. Therefore, the CN side needs to save the related subscription information of the UE and the AP. The subscription information includes at least a private base station identifier/base station cell list, and private base station data, and a user equipment subscription information including at least a private base station identifier or a base station cell list, and a user identifier; or The saved contract information may also include the contents as shown in Table 1 and Table 2;

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AP identity AP identity, which will be transmitted between AP-CN interfaces and will be saved in

The UE's subscription information informs the UE to allow access to or possess those APs.

AP Cell list A plurality of cells that an AP may have. Like the current base station, an AP may have multiple cells.

Owner: IMSI (or IMSI list) IMSI or IMSI list of the owner of the AP

Allowed Visitors: IMSI list The IMSI list of UEs that can access the AP as a visitor.

Private Only Indication (Yes or whether AP is a mode that allows only a few people to use

No)

Public allowed Indication (Yes Whether AP is a mode that allows everyone to use

Or No) The network identifier to which the PLMN ID AP belongs, including the MCC + MNC two parts.

Location area identifier or routing area identifier to which the LAC/RAC AP belongs

The RNC ID inherits the RNC ID of the UMTS and is used on the Iu interface.

IS: OOS: IS/OOS (The environment in which the AP is located, if there is no macro cell coverage, it is OOS, if the AP coverage to macro layer) is IS with macro cell coverage, or only part of the AP has macro cell coverage. , then IS/OOS

AP Neighbour cell list AP neighbor cell list. In general, all the cells need to be configured with a list of neighboring cells, which are sent in the broadcast information of each cell, and tell the UE which neighboring cells can be reselected by the cell.

Table 1

Table 2

In other embodiments of the present invention, the subscription information may be saved on both the CN and the AP, and the implementation of the present invention is not affected.

After the above-mentioned contract information is saved, the methods provided in the third embodiment and the fourth embodiment of the present invention can be implemented. The two embodiments will be described in detail below with reference to the accompanying drawings. Embodiment 3:

In this embodiment, the UE is a UE that is allowed to be accessed by the AP. In this case, referring to FIG. 6, the method for controlling the accessing the private base station includes:

Step 601: The UE establishes RRC (Radio Resource Control) with the AP. In the process of establishing a connection, the UE sends its own identity, such as IMS I, to the AP. After the UE establishes an RRC connection with the AP, the private base station may request the user equipment to camp on other carrier frequencies or other wireless access. The technology performs measurement so that the private base station does not allow the user equipment that accesses the private base station to switch the user equipment to the adjacent macro cell or other private base station according to the measurement result.

Step 602: The AP sends an initial message to the CN to perform a service request. The message carries the identifier of the UE and the identifier of the AP. The AP sends an initial message to the CN in the embodiment of the present invention. In other embodiments of the invention, the step may also be implemented by sending other messages, without affecting the implementation of the present invention;

Step 603: The CN requests the database that holds the subscription information to obtain the subscription information of the UE and the AP according to the identifier of the UE and the identity of the AP. The database may be a home location register (HLR), or may be other storage. a database of contract information functions;

Step 604: The database returns the obtained subscription information of the UE and the AP to the CN, and the CN determines, according to the subscription information, that the UE is allowed to access the AP.

Step 605: The CN informs the AP to allow the current UE to access; wherein, in the embodiment of the present invention, the CN uses the direct transmission message to inform the AP to allow the UE to access;

Step 606: The UE accesses the network through the AP to obtain a service. Embodiment 4: In this embodiment, the UE is a UE that is not allowed to be accessed by the AP. In this case, referring to FIG. 7, the method for controlling the accessing the private base station specifically includes:

Step 701 to step 703 are the same as steps 601 to 603;

Step 704: The database returns the obtained subscription information of the UE and the AP to the CN, and the CN determines, according to the subscription information, that the UE is not allowed to access the AP.

Step 705: The CN informs the AP that the current UE is not allowed to access. In the embodiment of the present invention, the CN uses the direct transmission message to notify the AP that the UE is not allowed to access.

So far, in the embodiment of the present invention, the process related to the control method ends; In an embodiment, in order to provide a better service to the user, the method may further include the following steps: Step 706: The AP directly requests the UE to perform blind handover, to switch to the neighboring macro cell or other public that allows the user equipment to access. Private base station. Even if there is no measurement of the surrounding cell by the user equipment, the private base station can trigger the user equipment to perform blind handover by using the previously generated handover, or by installing the answering device on the private base station to learn the information of some cells existing around the private base station. .

In the embodiment of the present invention, since the AP knows some information of the neighboring cell, the UE does not need to measure the neighboring macro cell to perform blind handover. If the blind handover is not used, the private base station may request the user equipment to surround the other. After the carrier frequency or other radio access technology performs measurement, according to the measurement result, the user equipment is switched to an adjacent macro cell or other private base station through a handover procedure.

Step 707: The AP initiates a handover, so that the UE switches to the neighboring macro cell, where the handover signaling process and the relocation process are performed, and the AP and the CN side node are required to interact;

Step 708: The AP notifies the UE to switch to the neighboring cell, and after receiving the notification, the UE switches to the neighboring cell.

In the fourth embodiment, the UE is switched to the neighboring macro cell by using the AP. In other embodiments of the present invention, when the UE establishes a connection with the macro cell, the following two are also provided. The handover method is used to switch the UE to another AP through the macro cell if the current AP does not allow the UE to access, specifically:

The handover method is as follows: In this method, when the UE is in a macro cell, and the UE is close to the AP that allows itself to access (the AP is within the coverage of the macro cell), the macro cell switches the UE to the AP; Here, the UMTS RNC (Radio Network Controller, Radio Network Controller) and NB (NodeB, Base Station) functions are integrated in the AP, so the AP to the CN (SGSN (Serving GSN) or MSC (Mobi le Swi tching Center) The interface of the Mobile Switching Center)) will be equivalent to the Iu interface. Referring to FIG. 8, the switching method specifically includes:

Step 800: The CN can obtain the (AP) subscription information of the UE in the active state from the CN database. This means that the UE-AP association information needs to be transmitted on the Iu interface of the macro cell (or the UE is allowed to connect). The subscription information of the AP adjacent to the macro cell);

Step 801: The macro cell sends the measurement control information to the UE, where the information about the AP that is allowed to access in the vicinity of the UE, the air interface wireless parameter configuration of the AP, such as a scrambling code, is conveniently included for the UE to search.

Step 802: The macro cell finds that the AP that is allowed to access is a good handover candidate cell, and confirms that the UE is allowed to access, and sends a relocation request to the CN; thereby starting the RNC relocation process of the UMTS standard;

Step 803: The CN sends a relocation request to the AP in step 802. In an actual application, the request may need to span multiple CN nodes, such as multiple SGSNs, etc., for convenience of description, no description is made, but A CN node (such as SGSN) operates. At this time, some special information needs to be transmitted to distinguish it from the general procedure of the UMTS. The information may be some AP-related subscription information of the UE, and is used for the AP to check the visited UE. If it is not the UE that is allowed to access, the AP may Will refuse this switching process.

Step 804: The AP prepares a radio resource for the UE, and when it is ready, sends a relocation request to the AP.

CN.

Step 805: The CN sends a relocation command to the macro cell.

Step 806: The macro cell sends a physical channel reconfiguration to the UE.

Step 807: The UE switches to the AP, and the physical channel reconfiguration is completed to the AP.

So far, the UE has completed the handover from the macro cell to the AP. It should be noted that the above process differs from the general handover process in that some UE~AP related subscription information is needed in these processes. In particular, the Iu interface is the information that the AP~CN node needs to pass to the AP.

Switching method 2: In the method, for a UE that does not have a private AP to allow access, if there is a public AP in the current macro cell, the macro cell may switch the UE to the public AP; the public AP may be a small one. AP corresponding to the supermarket and office;

At this time, the CN may check whether the UE is allowed to access the AP, and the AP may also check whether the UE is allowed to access; because even if access is allowed, there may be a difference in priority, such as If the super user comes, that is, the AP owner comes, other users may have the risk of being preempted and excluded. Therefore, the switched UE also needs to check some subscription information related to the AP.

Referring to FIG. 9, the handover method specifically includes:

Step 900: The macro cell informs the public AP information in the vicinity of the UE (that is, in the macro cell);

In the embodiment of the present invention, the macro cell performs the foregoing notification by using the broadcast information of the macro cell; if the number of the public APs is large, the broadcast information cannot carry the information of all the public APs, and may also be notified only by the broadcast information. Have the existence of a public AP, and inform the UE of some basic information common to these public APs, without telling the specific public APs;

After the information of the public AP is notified to the UE, the UE can measure the presence of the public AP. Step 901: The macro cell filters out the public AP that allows the UE to access, sends the handover measurement control information to the UE, and the UE sends a measurement report to the macro cell. ;

Steps 902 to 907 are the same as steps 802 to 807.

In the second switching method, performing access monitoring of the UE for the public AP may simplify the process. In addition, considering that the public AP has the advantages of increasing coverage and reducing the load of the macro cell, the operator can use the public AP. Lower it to attract more users. In the foregoing Embodiment 3 and Embodiment 4, since it is necessary to determine whether the UE is allowed to access the AP, the content delivered and the content transmitted by the existing signaling are between the AP and the CN, that is, the Iu interface. Different, specifically:

1) The AP needs to notify the CN to check whether the UE is allowed to access the AP through the initial message (Initial Message), and therefore, the identifier of the AP needs to be added in the initial message, so that the CN is based on the AP. The identification implements the check. In an actual application, an AP can be uniquely identified in a location area or a routing area based on PLMN + LAC ( + RAC ) + AP identity; see Table 3, after the original Ini t ia l UE Mes sage message After the AP identifier (AP ident i ty ), the format of the message is:

IE/Group Name Presence Range IE type and Semantics Criticality Assigned Reference description Criticality

Message Type M 9.2.1.1 YES ignore

CN Domain M 9.2.1.5 YES ignore Indicator

LAC M 9.2.3.6 YES ignore

RAC C - ifPS 9.2.3.7 YES ignore

SAI M 9.2.3.9 YES ignore

NAS-PDU M 9.2.3.5 YES ignore

Iu Signaling M 9.2.1.38 YES ignore

Connection

Identifier

Global RNC-ID M 9.2.1.39 YES ignore

GERAN 0 9.2.1.57 YES ignore Classmark

Selected PLMN 0 9.2.3.33 YES ignore Identity

NAS Sequence 0 9.2.3.34 YES Ignore Number

Permanent 0 9.2.3.1 YES Ignore NAS UE

Identity

AP identity 0 xxxx YES Ignore Table 3

Table 4 supplements Table 3, specifically:

Table 4

Table 5 shows how to identify the AP:

table 5 2) The CN needs to reply to the AP through the Iu interface to inform the AP of the corresponding check result: After the CN is checked, for example, the MSC or the SGSN obtains the subscription information of the UE in the HLR and judges whether the UE is allowed. Using the AP, the CN side needs to notify the AP of the result of the access check by using the direct transmission message of the Iu interface.

In the embodiment of the present invention, if the check result is that access is allowed, the direct transmission message is not changed; if the access is denied, the access check result is added to the direct transmission message to indicate that the access check fails; In a preferred embodiment of the present invention, the reason for the rejection may be further increased to indicate to the AP that the access is denied due to the failure of the access check; and the format of the direct transmission message that adds the check result and the reason for the rejection may refer to Table 6:

Table 6

In the third embodiment and the fourth embodiment, the CN is used as the network side device. In other embodiments of the present invention, the other network side device may also be used to implement the present invention.

For the methods described in the foregoing embodiments 3 and 4, the embodiment of the present invention also provides a corresponding control system and apparatus for accessing a private base station, and the system and apparatus are separately introduced below.

The system includes: a network side device and a private base station; wherein, for convenience of description, the CN is used as the network side device and the AP is used as the private base station in the embodiment of the present invention: The CN is used to:

The related subscription information of the UE and the AP is saved, and the contents of the subscription information are shown in Table 1 and Table 2;

After receiving the initial message sent by the AP, the UE obtains the subscription information of the UE and the AP from the database that holds the subscription information according to the identifier of the UE and the identifier of the AP. The CN determines whether the UE is allowed to be accessed according to the subscription information. Entering the AP, and notifying the AP of the judgment result;

The AP is configured to send an initial message to the CN after the UE establishes a connection with the UE, and notify the CN to determine whether the UE is allowed to access the AP. Equipment implementation.

In addition, in the embodiment of the present invention, the network side device is separately protected as a device for controlling the access to the private base station, and the device includes:

a storage unit, configured to store related subscription information of the UE and the AP, and the contents included in the subscription information are shown in Table 1 and Table 2;

The determining unit is configured to: after receiving the initial message sent by the AP, obtain, according to the identifier of the UE and the identifier of the AP, the subscription information of the UE and the AP from the database that holds the subscription information, and determine, according to the subscription information, the UE. Whether access to the AP is allowed, and the judgment result is notified to the AP. In the above description, it is used by CN釆 to detect whether the UE is allowed to access the AP. In the third embodiment of the present invention, the determination as to whether or not the access is permitted may also be performed on the AP side. By judging at the AP side, it is possible to reduce the load on the CN side and the signaling load between the AP and the CN, and speed up the judgment process. Especially for UEs that continuously initiate access services in the AP, the processing speed can be significantly improved. In this case, some CN side information needs to be transmitted through the Iu interface, so that the AP decides how to handle the UE's call or handover. See Table 7 for the contents of the Iu interface.

In Siuiiiillinu

List of Cell Identities Based on the AP or Cell ID, the information about the APs and cells allowed by these UEs can be stored in the CN and AP. In this case, the Iu interface (strictly speaking List of AP identities The interface between the AP and the CN can be used to implement some inter-working by passing the identity of the AP or Cell.

If there is no such information AP list, the IMSI of the UE can be delivered. Currently, many Iu interface processes of UMTS use it. Then through the UE

IMSI finds relevant information on the CN or AP, AP, Cell list, and so on.

Private Indication identifies whether certain cells of an AP or AP are completely private and are not open to the public.

Public Indication identifies whether certain cells of an AP or AP are open to the public.

AP Service Indication (IS: This information can be sent from the AP to the CN, OOS: IS/OOS at the beginning or in the middle of the call origination) so that the CN can decide how to handle the UE's call.

If not sent to the CN, the AP can decide to process the UE's call based on its own knowledge of the wireless environment.

Table 7

The list of the cells or APs that the UE is allowed to access may be stored in the CN or the AP, and the list of the cells or APs that the UE is allowed to access may be stored in the CN or the AP. This information is sent to the macro cell or AP. If it is sent to the macro cell, the macro cell can be assisted to switch the UE to the corresponding AP/Cel l that the UE can go to; and to the AP, the AP-AP can be switched.

Based on the content in Table 7 above, it can be implemented by the AP to detect whether the UE is allowed to access without CN participation. The AP keeps some subscription information (such as IMSI, TMSI, P-TMSI, etc.) of the UEs that are allowed to access. If the UE is not allowed to access, the direct RRC relocation to the macro cell includes:

(1) First, the UE sends an RRC connection request to the AP;

(2) According to the UE identifier (IMSI or TMSI, PTMSI, etc.) in the RRC request message, the AP compares the UE subscription information stored in the RRC request message to check whether the currently requested UE is an allowed UE, and if it is allowed to connect The incoming UE completes the normal access procedure. If it is not a UE that is allowed to access, transfer to (3);

(3) directly relocating the UE to the neighboring macro cell by using the RRC, where the relocation is an existing process.

For the third embodiment, in the embodiment of the present invention, a corresponding control device for accessing a private base station is provided, and the device may be implemented by using an AP, and the device includes:

a receiving unit, configured to receive a connection request sent by the UE;

a determining unit, configured to determine, according to the UE identifier (IMSI or TMSI, PTMSI) in the connection request And so on, comparing the UE subscription information saved by the device itself, and checking whether the UE currently requesting access is a UE that is allowed to access;

The notification unit is configured to notify the UE of the judgment result of the judgment unit.

In a preferred embodiment of the present invention, the control apparatus for accessing the private base station may further include a relocation unit, configured to relocate the UE to the UE if the determining unit determines that the UE is a UE that is not allowed to access. Adjacent macro cell. The above control method is for the search period and whether the AP allows the UE to access. In the following, whether the AP is in the service coverage (00S) or the service coverage (IS) state, and access control when accessing the private base station is performed. The method is described in detail:

Embodiment 5:

First, the 00S and I S states are introduced separately:

Referring to the scenario shown in FIG. 10, when the AP is located in the macro cell service coverage, the AP is in the IS state; when the AP part is located in the macro cell service coverage, and the part is not located in the macro cell service coverage, The AP is in the IS state/00S state; when the AP is not located in the macro cell service coverage, the AP is in the 00S state;

More specifically, in practical applications, there are two macro cell coverages of UMTS and GSM. Correspondingly, the AP may also support UMTS or GSM, and even support both UMTS and GSM modes. For this case, see the figure. In the embodiment of the present invention, the corresponding scenario is as follows:

As shown in FIG. 11a, the AP is in the UMTS mode, and is not in the coverage of the UMTS and the GSM macro cell. In this case, the AP is in the 00S state for the two macro cells.

As shown in FIG. 1 ib, the AP is in the UMTS mode, and is not in the coverage of the UMTS macro cell, but is in the coverage of the GSM macro cell. At this time, the AP is in the 00S state for the medical TS macro cell, but The GSM macro cell is in the IS state;

For the above scenario, referring to FIG. 12, in the embodiment of the present invention, the access control method includes the following steps: Step 1201: Determine the current state of the AP. Specifically, it is to determine whether the AP is in the 00S state or the IS state, or the 00S/IS state. More specifically, the AP may be judged respectively for different types of macro cells. , for example, the situation shown in Figure 11a and Figure ib;

Step 1202: If it is determined that the AP is currently in the 00S state, the AP is assigned a separate routing area code (LAC) or routing area code (RAC); wherein, a separate identifier is assigned, the purpose of which is to make the AP not and other APs The identity is shared, so that the AP that shares the identity with the AP also erroneously rejects the UE access when the current AP rejects the UE access. In addition, by assigning a separate LAC or RAC to the AP, the UE is not allowed in the AP. In the case of access, it is convenient to reject the access of the UE by reasons such as "LA not al lowed" "ROAMING NOT ALLOWED". At this time, the UE can only make restricted services such as emergency calls, which can display information to the user. For example, "Business is limited, only urgent", prompting the user to call elsewhere. Otherwise, there is no other reason to reject the UE access, and the user may not know why his UE cannot access the AP if the received signal is good.

Step 1203: When the UE requests to access the AP, if it is determined that the UE is not allowed to access the AP, according to the state of the AP itself, the UE is prompted for the reason for the limited service or the UE is switched to the corresponding Community. For the scenario shown in Figure l ib, the specific implementation of step 1203 is as follows, wherein the AP has been assigned a separate RAC:

If the UE only supports the UMTS mode, if the AP does not allow the UE to access, information such as "LA not al lowed" is returned to the UE, thereby enabling the UE to display information such as "service limited, emergency only" To the user;

If the UE supports the UMTS mode and the GSM mode, the AP has two solutions when the AP does not allow the UE to access:

Manner 1: Returning information such as "LA not a l lowed" to the UE, so that the UE can display information such as "service restricted, emergency only" to the user;

Manner 2: The UE is allowed to camp in the AP, and when the UE attempts to obtain a service from the AP, the UE is handed over to the GSM macro cell.

The above step 1201 can be implemented as follows: A capability detection device similar to the terminal that collects signals from other base stations is installed for the AP, so that the AP can find out whether it is in a certain RAT publ ic Macro Ce ll of 00S or IS.

Alternatively, it is also possible to determine whether the AP is in the 00S state or the IS state by indirectly testing the neighboring cells by intra-frequency, inter-frequency or radio access technology measurement in the active state in the private base station.

For the description of the above process, in practical applications, there are two ways to deal with it:

1. The AP reports the indication to the CN. The AP needs to send the service status information (see Table 7) of the AP to the CN on the Iu interface (or the interface between the AP and the CN).

(When a change occurs), you need to tell the CN, and tell the network administrator that the network management can allocate or recycle the LAC/RAC to the AP in time. The current AP status (IS/00S, IS or 00S) ₀ then CN can report according to the AP. The information is given to the UE as a suitable process: whether to switch to the neighboring macro cell or directly reject the access of the UE (when the AP is in the 00S state).

2, AP-centric processing: The AP obtains the subscription information of the UE and the AP from the CN through the Iu interface (or the interface between the AP and the CN). The AP directly decides whether the UE should be handed over to the neighboring macro cell, or if the AP is directly denied access (for example, when the AP is 00S), so that only the emergency call service can be accepted.

For the method provided in Embodiment 5 of the present invention, the embodiment of the present invention also provides a corresponding control device for accessing a private base station, and the device may be implemented by using a network side device. In the embodiment of the present invention, the network side device is a CN. , the CN further includes:

The state judging unit is configured to determine whether the AP is currently in a state that is not located in the 00S of the macro cell coverage, or is in the state of the IS in the coverage of the macro cell, or is in the IS/00S state of the part IS and part 00S;

The identifier allocation unit is configured to allocate a separate routing area identifier to the AP after the status determining unit determines that the AP is currently in the 00S state;

The error reason prompting unit is configured to: after the AP determines that the UE is not allowed to access, according to The state in which the AP is located indicates the reason why the service is restricted to the UE.

In a preferred embodiment of the present invention, the apparatus may further include a switching unit, configured to switch the UE to the corresponding cell after the AP determines that the UE is not allowed to access. In the embodiment of the present invention, the other carrier frequency or other radio access technologies refer to technologies such as GSM, medical TS, and LTE.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It is considered as the scope of protection of the present invention.

Claims

Claim

A control method for accessing a private base station, the method comprising:

The private base station receives the connection request sent by the user equipment, where the connection request carries the identifier of the user equipment;

The method according to claim 1, wherein the network side device stores the related subscription information of the user equipment and the private base station, where the method is specifically:

After receiving the connection request sent by the user equipment, the private base station sends a message to the network side device, where the message carries the identifier of the user equipment and the identity of the private base station itself;

And the network side device obtains subscription information of the user equipment and the private base station from a database that saves the subscription information according to the user equipment identifier and the identifier of the private base station;

Determining, by the network side device, whether the user equipment is allowed to access the private base station according to the subscription information, and notifying the private base station of the determination result;

The private base station controls access of the user equipment according to the determination result.

The method according to claim 2, wherein the determining operation is that the network side device determines, according to the subscription information, that the user equipment is not allowed to access the private base station, and the network side Notifying the private base station that the user equipment does not allow access by the user equipment;

After the private base station learns that the user equipment is not allowed to access, the user equipment is further switched to the neighboring macro cell or other private base station by using blind handover;

Or,

The method further includes: establishing a connection between the private base station and the user equipment, the private base station requesting the user equipment to measure other carrier frequency or other radio access technologies; and the private base station knowing that the user equipment is not allowed to access, further The measurement result is that the user equipment is switched to an adjacent macro cell or other private base station through a handover procedure.

The method according to claim 2, wherein, if the user equipment is in a macro cell, and the user equipment is close to a private base station that allows itself to access, and the private base station is within the macro cell coverage, The macro cell establishes a connection with the user equipment;

The method further includes: the network side device determining, according to the subscription information, that the user equipment is not allowed to access the private base station, and the network side device notifying that the private base station does not allow the user equipment to access;

The macro cell switches the user equipment to other private base stations.

The method according to claim 4, wherein the specific implementation of the macro cell to switch the user equipment to other private base stations is:

The macro cell informs the user equipment of the private base station information in the macro cell;

The macro cell filters out a private base station that allows the user equipment to access, and sends a handover measurement control to the user equipment, where the user equipment sends a measurement report to the macro cell;

The macro cell discovers that the private base station can serve as a handover candidate cell, and confirms that the private base station allows the user equipment to access, and then switches the user equipment to the private base station.

The method according to claim 2, wherein: the step of notifying the private base station to the determination result is: the network side device notifying the private base station of the determination result by using a direct transmission message.

The method according to claim 6, wherein: the determining, by the network side device, the user equipment is not allowed to access the station according to the subscription information. When the private base station is described, the network side device informs the private base station that the user equipment is not allowed to access by using a direct transmission message, and the access check result of the direct transmission message carries the judgment result of the denied access, wherein And the reason for rejecting the access denied due to the failure of the access check is further added to the direct transmission message.

8. The method according to claim 1, wherein the method is specifically:

The private base station receives the connection request sent by the user equipment;

The private base station determines, according to the user equipment identifier in the connection request, whether the user equipment currently requested to access is a user allowed to access by comparing the subscription information of the user equipment saved by the user equipment. The device controls the access of the user equipment according to the judgment result.

The method according to any one of claims 2 to 8, wherein the specific implementation of the related subscription information of the saved user equipment and the private base station is:

The user equipment subscription information including at least a private base station identity/base station cell list and a private base station owner, and at least a private base station identity/base station cell list, and a user identity is stored.

The method according to any one of claims 2 to 7, wherein the network side device is a core network device CN, and the private base station is an access point AP or hNB.

A control system for accessing a private base station, the system comprising: a network side device, wherein:

The network side device is used to:

Receiving a message sent by the private base station, where the private base station sends a message to the network side device after receiving the connection request sent by the user equipment, and notifying the network side device to determine whether the user equipment is allowed to access the device. Private base station; and

Obtaining, by the user equipment identifier and the identity of the private base station, the subscription information of the user equipment and the private base station from the database that holds the subscription information, and determining, according to the subscription information, whether the user equipment is allowed to access the private base station, and determining The result is to inform the private base station, wherein the private base station determines whether to connect the user terminal to the base station according to the received judgment result.

The system according to claim 11, wherein the network side device is a core network device, and the private base station is an access point or an hNB.

A control device for accessing a private base station, the device comprising:

a determining unit, configured to obtain, according to the user equipment identifier and the identifier of the private base station, subscription information of the user equipment and the private base station, and determine, according to the subscription information, whether the user equipment is It is allowed to access the private base station, and informs the private base station of the judgment result.

The control device according to claim 13, wherein the device comprises: a storage unit, configured to save related subscription information of the user equipment and the private base station.

15. A private base station, the base station comprising:

a determining unit, configured to obtain, according to the user equipment identifier in the connection request, the subscription information of the user equipment, and check whether the user equipment that is currently requested to access is a user equipment that is allowed to access;

The notification unit is configured to notify the user equipment of the determination result of the determining unit.

The private base station according to claim 15, wherein the base station further comprises: a storage unit, configured to save related subscription information of the user equipment and the private base station.

The private base station according to claim 15 or 16, wherein the base station further comprises:

And a relocation unit, configured to relocate the user equipment to the neighboring macro cell if the determining unit determines that the user equipment is a user equipment that is not allowed to access.

18. A control method for accessing a private base station, the method comprising:

Determining a distance of the user equipment from the private base station;

According to the determination result, the public land mobile network PLMN search period of the user equipment is adjusted and notified to the user equipment, so that the user equipment performs PLMN search according to the adjusted search period.

The method according to claim 18, wherein the adjusting the PLMN search period of the public land mobile network of the user equipment according to the determination result is:

Determining that the distance from the user equipment that is allowed to access the private base station is less than a predetermined value, and shortening the PLMN search period of the user equipment according to the determination result;

Or for: It is determined that the distance from the private base station that the user equipment is allowed to access is greater than a predetermined value, and the PLMN search period of the user equipment is lengthened according to the determination result.

The method according to claim 18, wherein the determining, by the network side device, the distance is: according to whether the RA/LA of the macro cell where the user equipment is currently located is covered by the private base station The RA/LAs of the neighboring macro cells of the cell are close or overlapping.

The method according to claim 18, wherein the adjusting the public land mobile network PLMN search period of the user equipment and notifying the user equipment is: the network side device adjusting the user After the PLMN search period of the public land mobile network of the device, the adjusted PLMN search period is notified to the user equipment by means of data downloading.

The method according to any one of claims 18 to 21, wherein the network side device is a core network device, and the private base station is an access point AP or an indoor base station hNB.

The system according to claim 23, wherein the network side device is a core network device, and the private base station is an AP or an hNB.

25. A control device for accessing a private base station, the device comprising:

a receiving unit, configured to receive a location update request sent by the user equipment;

a determining unit, configured to determine a distance from the private base station that the user equipment is allowed to access; and an adjusting unit, configured to adjust a PLMN search period of the user equipment according to the determining result of the determining unit; The notification unit is configured to notify the user equipment of the adjusted PLMN search period.

A control method for accessing a private base station, characterized in that it is determined whether the current state of the private base station is in a state of not being located in the 00S of the coverage of the macro cell or in the state of the IS within the coverage of the macro cell, or is it in part IS, the IS/00S state of the part 00S, when determining that the private base station is in the 00S state, assigning the private base station a separate routing area code LAC or routing area code RAC; the method includes:

When the user equipment requests to access the private base station, if it is determined that the user equipment is not allowed to access the private base station, according to the state of the private base station, the user equipment is prompted for the reason for the limited service or Switch the user equipment to the macro cell.

The method according to claim 26, wherein the determining whether the state in which the private base station is located is the 00S state or the IS state is specifically:

The private base station determines that it is in the 00S state or the IS state by using a capability detecting device that receives signals from other base stations.

Alternatively, the neighboring cell is measured by the user equipment in the coverage of the private base station, and it is determined whether the private base station is in the 00S state or the IS state or the IS/00S state.

The method according to claim 26, wherein the specific implementation of prompting the user equipment to restrict the service or switching the user equipment to the macro cell according to the state of the private base station is :

The private base station prompts the user equipment for the reason for the limited service or switches the user equipment to the macro cell according to the state in which the private base station is located or the network side device according to the state of the private base station.

The method according to any one of claims 26 to 28, wherein the network side device is a core network device, and the private base station is an access point or an hNB.

30. A control device for accessing a private base station, the device comprising:

a state judging unit, configured to determine whether the private base station is in a state of not being located in the 00S of the coverage of the macro cell, or in the state of the IS in the coverage of the macro cell, or in the IS/00S state of the partial IS and part 00S; An identifier allocation unit, configured to allocate a separate routing area identifier to the private base station after the state determining unit determines that the private base station is currently in the 00S state;

The error cause prompting unit is configured to: after the private base station determines that the user equipment is not allowed to access, according to the state of the private base station, prompt the user equipment for the reason for the service limitation.

The device according to claim 30, further comprising: a switching unit, configured to: after the private base station determines that the user equipment is not allowed to access, switch the user equipment to the corresponding cell .

The device according to claim 30 or 31, wherein the network side device is a core network device, and the private base station is an access point or an hNB.