CN101272545A - A paging method, system and device - Google Patents

Abstract

The invention discloses a paging method, which is used to solve the problems of high network load pressure, network insecurity and network resource waste caused by large paging range in the prior art. In this method, before sending the paging command, the mobile switching center obtains the base station controller information of the last cell where the called mobile station is located, and sends the paging command containing the cell information of the last cell where the called mobile station is located to the base station The controller, the base station controller queries its own database according to the cell information, obtains the list of neighboring cells of the last cell where the called mobile station is located, and then sends a paging command to the base transceiver station of the cell and the neighboring cell of the cell . According to the scheme proposed by the invention, the range of paging is reduced, the paging load is reduced, and the network security is improved. At the same time, the invention also discloses a paging system and device.

Description

A paging method, system and device

technical field

The present invention relates to the field of communication technology, in particular to a paging method, system and device.

Background technique

Global System for Mobile Communications (GSM, Global System for Mobile Communications) paging refers to the signaling process in which the network actively sends messages to find the called mobile phone. The traditional GSM paging method is: after the route of calling the mobile station (MS, Mobile Station) reaches the mobile switching center (MSC, Mobile Switching Center) serving the MS, the MSC sends a paging message to the MS, and the paging message is sent to the MS. All base station controllers (BSC, Base Station Controller) in the entire location area (LA, Location Area) broadcast, that is to say, all base transceiver stations (BTS, BaseTransceiver Station) controlled by all BSCs in the location area must broadcast to The called MS sends a paging message. The called MS that is receiving CCCH (Common Control Channel) information in the location area will receive the paging message and initiate a paging response.

Referring to shown in Fig. 1, the concrete process that prior art carries out GSM paging comprises the following steps:

Step 101: After receiving the paging command from the calling MS, the MSC sends the paging command to all BSCs belonging to the MS's location area.

Step 102: After each BSC receives the paging command, it sends the paging command to all BTSs it controls.

Step 103: After receiving the paging command, each BTS sends a paging message to the called MS.

After receiving the paging message, the called MS initiates a paging response and sends the paging response to the BTS, and the BTS sends the paging response to the BSC, and the BSC returns the paging response to the MSC.

In the prior art, GSM paging is performed in units of Location Area Code (LAC, Location Area Code). If one LAC has multiple BSCs, the paging volume carried by the LAC is the sum of the paging volumes of the multiple BSCs, and the size of the LAC has a linear relationship with the paging volume. Paging an MS needs to be performed in the entire LAC area, and accurate paging cannot be achieved, which wastes network resources.

Moreover, with the rapid development of mobile communication traffic, especially on major holidays or major competitions, business bursts in some areas lead to a sharp increase in paging traffic. For BSC and Abis interfaces, the two functional entities of the base station subsystem The communication interface between BSC and BTS, as well as the load of related processing units have caused great pressure, and also brought great hidden dangers to the safe and stable operation of the network. In order to reduce this risk, network planners have to divide LA into Too many LAs lead to a significant increase in the number of signaling overheads for user mobility management, thereby occupying a large amount of network resources.

In order to solve the contradiction between network load security and network resource occupation, a secondary LAC paging method is proposed in the prior art. This method does not take the LAC as the smallest unit, but the BSC of the last cell where the MS is located. Paging, referring to as shown in Figure 2, the specific process that this method carries out GSM paging comprises the following steps:

Step 201: After receiving the paging command from the calling MS, the MSC queries the Visitor Location Register (VLR, Visitor Location Register) for the global identifier (CGI, CellGlobal Identifier) of the last cell where the called MS is located.

Step 202: The VLR returns the CGI of the last cell where the called MS is located to the MSC.

Step 203: The MSC searches for the BSC information of the last cell where the called MS is located according to the received CGI.

Step 204: the MSC sends a paging message to the BSC.

Step 205: The BSC sends a paging command to all BTSs controlled by it.

Step 206: the BTS sends a paging request to the called MS.

In this method, the paging is carried out in units of the BSC where the last cell of the called MS belongs, and the paging range is narrowed to a certain extent. Accurate paging cannot be achieved, and the paging load of the BSC is under great pressure when the paging volume is large.

Contents of the invention

In view of this, an embodiment of the present invention provides a paging method to solve the problems in the prior art that accurate paging cannot be achieved due to a large paging range and the network load pressure is heavy.

A paging method provided by an embodiment of the present invention includes:

Before sending the paging command, the mobile switching center obtains the base station controller information of the last cell where the called mobile station is located;

The mobile switching center sends a paging command containing the cell information of the last cell where the called mobile station is located to the base station controller;

The base station controller queries its own database according to the cell information, and obtains the neighbor list of the last cell where the called mobile station is located, and the database stores the neighbor list of each cell in the base station controller;

The base station controller sends paging commands to base transceiver stations of the cell and neighboring cells of the cell.

A paging system provided by an embodiment of the present invention includes: a mobile switching center and a base station controller, wherein,

The mobile switching center is used to obtain the base station controller information of the last cell where the called mobile station is located before sending the paging command, and send the paging command containing the cell information of the last cell where the called mobile station is located to the base station controller;

The base station controller is configured to receive the paging command sent by the mobile switching center, query its own database according to the cell information, obtain the neighbor cell list of the last cell where the called mobile station is located, and then report to the The base transceiver stations of the cell and the cell's neighbors send paging commands.

A mobile switching center provided by an embodiment of the present invention includes:

An acquisition unit, used to acquire the base station controller information of the last cell where the called mobile station is located before sending the paging command;

The first sending unit is configured to send the paging command containing the cell information of the last cell where the called mobile station is located to the base station controller obtained by the obtaining unit.

A base station controller provided by an embodiment of the present invention includes:

a receiving unit, configured to receive a paging command sent by a mobile switching center;

The search unit is used to search and query its own database according to the cell information in the received paging command, and obtain the neighbor cell list of the last cell where the called mobile station is located;

The first paging unit is configured to send a paging command to the base transceiver station of the cell and the neighboring cells of the cell.

In the embodiment of the present invention, before sending the paging command, the mobile switching center obtains the base station controller information of the last cell where the called mobile station is located, and sends the paging command to the base station controller, and the base station controller searches its own database, The neighbor cell list of the cell is obtained, and the paging command is sent to the base transceiver station of the cell and its neighbor cells, which reduces the range of paging, reduces the paging load, and improves network security. Moreover, in this method, the LA is not used as a unit, so the range of the LA can be expanded appropriately, thereby reducing the signaling overhead of user mobility management and reducing the waste of network resources.

Description of drawings

FIG. 1 is a schematic diagram of a paging process in prior art 1;

FIG. 2 is a schematic diagram of a paging process in the prior art 2;

FIG. 3 is a flowchart of a paging method provided by an embodiment of the present invention;

FIG. 4 is a flowchart of a paging mode provided by Embodiment 1 of the present invention;

FIG. 5 is a flowchart of a paging mode provided by Embodiment 2 of the present invention;

FIG. 6 is a schematic structural diagram of a paging system provided by an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a mobile switching center provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a base station controller provided by an embodiment of the present invention.

Detailed ways

In the implementation of the present invention, when the mobile switching center receives the paging command, it obtains the BSC information of the last cell where the called mobile station is located, inserts the cell information into the paging command, and sends it to the BTS. The cell information in the call command, query its own database, and obtain the neighbor list of the last cell where the called mobile station is located. The database stores the neighbor list of each cell in the base station controller, and then the BSC will Paging commands are sent to the base transceiver stations of the cell and its neighbors.

The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

Fig. 3 is a flow chart of the paging method provided by the embodiment of the present invention, as shown in Fig. 3, mainly includes the following steps:

Step 301: Before sending the paging command, the MSC obtains the cell information of the last cell where the called MS is located, and determines the BSC of the cell according to the cell information.

Specifically, the cell information may be a Cell Global Identifier (CGI, Cell Global Identifier).

In the specific implementation process, the cell information of the last cell where the called MS is located can be obtained through the VLR.

Step 302: The MSC inserts the cell information of the last cell where the called MS is located into the paging command, and then sends the paging command to the BSC.

Step 303: The BSC queries its own database according to the cell information, and obtains a neighbor cell list of the cell.

Step 304: The BSC sends a paging command to the BTSs in the cell and its neighboring cells.

Step 305: Each BTS in step 304 will send a paging command to the called MS.

Fig. 4 is a specific flow chart of the first embodiment of the above-mentioned paging method. In this method, the scope of the LAC is greater than the scope controlled by the BSC, that is, one LAC contains multiple BSCs. As shown in Fig. 4, it mainly includes the following steps :

Step 401: When the MSC receives the paging command from the calling MS, it sends a request to the VLR for searching the cell information of the last cell where the called MS is located.

Step 402: After receiving the request, the VLR searches the cell information of the last cell where the called MS is recorded in its database, if found, proceeds to step 403, otherwise, proceeds to step 420.

Step 403: The MSC receives the cell information of the last cell where the called MS is returned from the VLR, and obtains the BSC of the cell according to the received cell information of the last cell where the called MS is.

Step 404: The MSC inserts the cell information of the cell into the paging command and sends it to the BSC.

Step 405: The BSC queries its own database according to the information of the cell, and obtains a list of neighboring cells of the cell.

The neighbor cell list in the database is determined by the geographical distribution around the cell and the mobile characteristics of users in the BSC, and it is maintained regularly.

Step 406: The BSC sends a paging command to the BTSs of the cell and its neighboring cells.

Step 407: The BTS receiving the paging command sends the paging command to the called MS.

Step 408: Whether the BSC receives a paging response, if yes, go to step 409; otherwise, go to step 410.

After receiving the paging command sent by the BTS, the called MS initiates a paging response to the BTS, and the BTS returns the paging response to the BSC after receiving the paging response.

If the called MS does not receive the paging command, it will not initiate a paging response, the BTS will not receive the paging response, and the corresponding BSC will not receive the paging response either.

Step 409: The BSC returns the received paging response to the MSC, and enters into step 421 to end paging.

Step 410: The BSC sends a notification to the MSC that no paging response is received.

Step 411: After receiving the notification, the MSC judges whether to continue paging according to the preset settings, if yes, proceed to step 412, otherwise enter step 420, and end paging.

Step 412: The MSC sends a paging command to the BSC to continue paging, and the BSC sends a paging command to all BTSs controlled by the BSC after receiving the paging command.

Step 413: Whether the BSC receives a paging response, if yes, go to step 414; otherwise, go to step 415.

Step 414: The BSC returns the received paging response to the MSC, and the MSC receives the paging response, enters step 421, and ends paging.

Step 415: The BSC sends a notification to the MSC that no paging response is received.

Step 416: After receiving the notification, the MSC judges whether to continue paging according to the preset setting, if yes, proceeds to step 417, otherwise proceeds to step 421, and ends paging.

Step 417: The MSC sends a paging command to all BSCs belonging to the called MS location area.

Step 418: Whether a certain BSC receives a paging response, if yes, go to step 419, otherwise, go to step 420.

Step 419: The BSC sends the received paging response to the MSC, and the MSC receives the paging response, enters into step 421, and ends the paging.

Step 420: The MSC returns paging failure information to the calling MS.

Step 421: End paging.

Fig. 5 is a specific flow chart of the second embodiment of the above paging method. In this method, the range of the LAC is not larger than the range controlled by the BSC, that is, there is only one BSC in one LAC, and multiple BSCs may be included in the range controlled by a BSC. LAC, as shown in Figure 5, the difference between this embodiment and Embodiment 1 is that after the first paging, when it is determined to continue paging, the range of paging is different, mainly including the following steps:

Step 501: When the MSC receives the paging command from the calling MS, it sends a request to the VLR for searching the cell information of the last cell where the called MS is located.

Step 502: After receiving the request, the VLR searches the cell information of the last cell where the called MS is recorded in its database, if found, proceeds to step 503, otherwise, proceeds to step 515.

Step 503: The MSC receives the cell information of the last cell where the called MS is returned from the VLR, and obtains the BSC of the cell according to the received cell information of the last cell where the called MS is.

Step 504: The MSC inserts the cell information of the cell into the paging command and sends it to the BSC.

Step 505: The BSC queries its own database according to the cell information, and obtains a list of neighbor cells of the cell.

The neighbor cell list in the database is determined by the geographical distribution around the cell and the mobile characteristics of users in the BSC, and it is maintained regularly.

Step 506: The BSC sends a paging command to the BTSs of the cell and its neighboring cells.

Step 507: The BTS receiving the paging command sends the paging command to the called MS.

Step 508: Whether the BSC receives a paging response, if yes, go to step 509; otherwise, go to step 510.

After receiving the paging command sent by the BTS, the called MS initiates a paging response to the BTS, and the BTS returns the paging response to the BSC after receiving the paging response.

If the called MS does not receive the paging command, it will not initiate a paging response, the BTS will not receive the paging response, and the corresponding BSC will not receive the paging response either.

Step 509: The BSC returns the received paging response to the MSC, enters step 516, and ends the paging.

Step 510: The BSC sends a notification to the MSC that no paging response is received.

Step 511: After receiving the notification, the MSC judges whether to continue paging according to the preset settings, if yes, proceed to step 512, otherwise enter step 515, and end paging.

Step 512: The MSC sends a paging command to all BTSs in the LAC where the BSC is located.

Step 513: Whether the BSC receives a paging response, if yes, go to step 514; otherwise, go to step 515.

Step 514: The BSC returns the received paging response to the MSC, and the MSC receives the paging response, enters step 516, and ends paging.

Step 515: The MSC returns the paging failure information to the calling MS.

Step 516: End paging.

FIG. 6 is a schematic structural diagram of a paging system provided by an embodiment of the present invention. As shown in FIG. 6 , it includes: a mobile switching center 60 and a base station controller 61, wherein,

The mobile switching center 60 is used to obtain the information of the base station controller 61 of the last cell where the called mobile station is before sending the paging command, and send the paging command containing the cell information of the last cell where the called mobile station is. base station controller 61;

The base station controller 61 is used to receive the paging command sent by the mobile switching center 60, and query its own database according to the cell information in the paging command, obtain the neighbor list of the last cell where the called mobile station is located, and then send The base transceiver stations of the cell and the cell's neighbors send paging commands.

When the mobile switching center 60 receives the paging command of the calling MS, it obtains the cell information of the last cell where the called mobile station is located. Specifically, the mobile switching center 60 can query the visitor location register 600 for the last cell information of the called mobile station. Cell information, and determine the information of the base station controller 61 according to the cell information, then insert the cell information into the paging command and send it to the base station controller 61, after the base station controller 61 receives the paging command, according to its own The database determines the neighbor cell list corresponding to the cell recorded in the cell information in the paging command, and then the base station controller 61 sends the paging command to the base transceiver stations of the cell and its neighbor cells.

If the base station controller 61 receives a paging response within the set time, the base station controller is further configured to return the paging response to the mobile switching center 60 .

If no paging response is received within the set time, the base station controller 61 is further configured to send a notification that no paging response is received to the mobile switching center 60 .

Then the mobile switching center 60 is further used to determine whether to continue paging after receiving the notification, and when determining to continue to initiate the second paging, if the location area code LAC where the base station controller is located Greater than the range controlled by the BSC, send a paging command to the base station controller 61 to continue paging. If the base station controller still does not receive a paging response within the set time after this paging, it will send a paging command to the mobile switching center 60. Not receiving the notification of the paging response, the mobile switching center 60 judges to continue to initiate the third paging according to the preset settings, and the mobile switching center 60 sends a paging command to all BSCs in the location area; if the base station control If the range of the location area code LAC where the controller 61 is located is not greater than the range controlled by the BSC, then the mobile switching center 60 sends a paging command to all base transceiver stations in the LAC, and if the base station controller 61 receives the paging response, it will The paging response is sent to the mobile switching center 60 and the paging is over. If it is not received, the base station controller 61 sends a notification that the paging response is not received to the mobile switching center 60, and the mobile switching center 60 returns a paging failure message to the called MS. information, paging ends.

Fig. 7 is a schematic structural diagram of a mobile switching center provided by an embodiment of the present invention, including: an acquiring unit 71 and a first sending unit 72, wherein,

An acquisition unit 71, configured to acquire the base station controller information of the last cell where the called mobile station is located before sending the paging command;

The first sending unit 72 is configured to send the paging command containing the cell information of the last cell where the called mobile station is located to the base station controller obtained by the obtaining unit.

Further, the mobile switching center further includes a receiving unit 70, configured to receive the paging response sent by the base station controller, and the notification that the paging response is not received sent by the base station controller.

Moreover, the mobile switching center further includes: a judging unit 73 and a continuing paging unit 74 . in,

The judging unit 73 is configured to judge whether to initiate a second paging or a third paging when the receiving unit 70 receives a notification that no paging response is received.

The paging continuation unit 74 is configured to send a paging continuation command to the base station controller or base transceiver station when the receiving unit determines to initiate the second paging or the third paging unit.

Further, the continuous paging unit 74 includes: a first continuous paging subunit 740 and a second continuous paging subunit 741 . in,

The first continuation paging subunit 740 is configured to send the notification to the base station if the range of the LAC where the base station controller that sends the notification is located is greater than the range controlled by the BSC when the judging unit 73 judges that the second paging is initiated The controller sends a paging command to continue paging.

The second continuation paging subunit 741 is configured to send a paging continuation to all base station controllers in the LAC where the base station controller that sent the notification is located when the judging unit 73 judges to initiate the third paging call command.

Further, the first continuing paging subunit 740 is also configured to, when the judging unit 73 judges to initiate the second paging, if the range of the LAC where the base station controller that sends the notification is located is not greater than the range controlled by the BSC, A paging command to continue paging is sent to all base transceiver stations within the LAC.

FIG. 8 is a schematic structural diagram of a base station controller provided by an embodiment of the present invention. As shown in FIG. 8 , it includes: a receiving unit 80, a searching unit 81, and a first paging unit 82, wherein,

The receiving unit 80 is configured to receive the paging command sent by the mobile switching center.

The search unit 81 is configured to query its own database according to the cell information in the received paging command, and obtain the neighbor list of the last cell where the called mobile station is located;

The first paging unit 82 is configured to send a paging command to the base transceiver station of the cell and the neighboring cells of the cell.

Further, the receiving unit 80 is also used to receive the paging response of the base transceiver station; then the base station controller also includes:

The sending unit 83 is configured to send the paging response to the mobile switching center when the receiving unit 80 receives the paging response.

Moreover, the sending unit 83 is further configured to send a notification that no paging response is received to the mobile switching center when the receiving unit 80 does not receive a paging response within a set time.

Further, the receiving unit 80 is further configured to receive the paging command sent by the mobile switching center to continue paging; then the base station controller also includes:

The second paging unit 84 is configured to send the paging command to all base transceiver stations controlled by the base station controller when the receiving unit 80 receives the continuing paging command from the mobile switching center.

In the implementation of the present invention, before sending the paging command, the MSC obtains the BSC information of the last cell where the called mobile MS is located through the VLR, and sends the paging command containing the cell information of the last cell where the called MS is located to the BSC. The cell information in the paging command queries its own database to obtain the list of neighbors of the cell, and then the BSC sends a paging command to the BTSs of the cell and its neighbors. Therefore, the paging method can reduce the number of pages range, improve paging accuracy, reduce network load, and reduce signaling consumption. Moreover, since the BSC queries the neighboring cell information in its own database, the query time is short, the process is simple, and the paging time is greatly shortened. Moreover, after the first paging failure, the MSC can also initiate the second paging according to the settings, that is, if the range of the LAC is larger than the range controlled by the BSC, the BSC of the last cell where the called MS is located will send a paging command to For all BTSs controlled by it, if the second paging fails, the MSC can also initiate a third paging to all BSCs in the same LAC according to the settings. If the range of the LAC is greater than the range controlled by the BSC, the All BTSs send paging commands, thus ensuring the success of paging to the greatest extent.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (21)

1. A paging method, characterized in that, comprising: Before sending the paging command, the mobile switching center obtains the base station controller information of the last cell where the called mobile station is located; The mobile switching center sends a paging command containing the cell information of the last cell where the called mobile station is located to the base station controller; The base station controller queries its own database according to the cell information, and obtains the neighbor list of the last cell where the called mobile station is located, and the database stores the neighbor list of each cell in the base station controller; The base station controller sends paging commands to base transceiver stations of the cell and neighboring cells of the cell. 2. The method according to claim 1, characterized in that, after the base station controller sends a paging command to the base transceiver station of the cell and the neighboring cells of the cell, the method further comprises: When the base station controller receives the paging response from the base transceiver station, it sends the paging response to the mobile switching center. 3. The method according to claim 2, wherein if the base station controller does not receive a paging response from the base transceiver station within the set time, and the location area code of the base station controller BSC is When the range of the LAC is greater than the range controlled by the BSC, the method further includes: The base station controller sends a notification to the mobile switching center that no paging response has been received; After receiving the notification, the mobile switching center sends a paging command to the base station controller to continue paging when determining to continue paging according to preset settings; After receiving the paging command, the base station controller sends the paging command to all base transceiver stations controlled by the base station controller. 4. The method according to claim 3, characterized in that, after the base station controller sends a paging command to all base transceiver stations controlled by the base station controller, the method further comprises: When receiving the paging response, the base station controller sends the paging response to the mobile switching center. 5. The method according to claim 4, wherein if the base station controller does not receive a paging response from the base transceiver station within the set time, the method further comprises: the base station controller sends a notification to the mobile center that no paging response has been received; After receiving the notification, the mobile switching center sends a paging command to all base station controllers in the LAC where the base station controller is located when determining to continue paging according to preset settings. 6. The method according to claim 2, wherein if the base station controller does not receive a paging response from the base transceiver station within the set time, and the location area code of the base station controller is LAC When the range is not greater than the range controlled by the BSC, the method further includes: the base station controller sends a notification to the mobile center that no paging response has been received; After receiving the notification, the mobile switching center sends a paging command to all base transceiver stations in the LAC when determining to continue paging according to preset settings. 7. A paging system, the system comprising: a mobile switching center and a base station controller, characterized in that, The mobile switching center is used to obtain the base station controller information of the last cell where the called mobile station is located before sending the paging command, and send the paging command containing the cell information of the last cell where the called mobile station is located to the base station controller; The base station controller is configured to receive the paging command sent by the mobile switching center, query its own database according to the cell information, obtain the list of neighbor cells of the cell where the called mobile station is last located, and then send the call to the cell Send a paging command to the base transceiver station of the neighboring cell of the cell. 8. The paging system according to claim 7, wherein the base station controller is further configured to receive a paging response from a base transceiver station, and send the paging response to the mobile switching center. 9. The paging system according to claim 7, wherein if no paging response is received within a set time, the base station controller is further configured to send a no paging response to the mobile switching center Response notification. 10. The paging system according to claim 7, wherein the mobile switching center is further configured to determine whether to continue paging after receiving the notification that no paging response is received, and determine whether to continue paging , if it is the second paging, and the range of the location area code LAC where the base station controller is located is larger than the range controlled by the BSC, send a paging command to the base station controller to continue paging. 11. The paging system according to claim 10, characterized in that the mobile switching center is further configured to determine whether to continue paging after receiving the notification that no paging response is received, and determine whether to continue paging , if it is the third paging, send a paging command to all base station controllers in the LAC. 12. The paging system according to claim 7, wherein the mobile switching center is further configured to determine whether to continue paging after receiving the notification that no paging response is received, and determine whether to continue paging , if it is the second paging, and the range of the location area code LAC where the base station controller is located is not larger than the range controlled by the base station controller, send a paging command to all base transceiver stations in the LAC. 13. A mobile switching center, comprising: An acquisition unit, used to acquire the base station controller information of the last cell where the called mobile station is located before sending the paging command; The first sending unit is configured to send the paging command containing the cell information of the last cell where the called mobile station is located to the base station controller obtained by the obtaining unit. 14. The mobile switching center according to claim 13, characterized in that the mobile switching center further comprises: a receiving unit, configured to receive the paging response sent by the base station controller, and the no paging response sent by the base station controller Notification of paging response received. 15. The mobile switching center according to claim 14, further comprising: A judging unit, configured to judge whether to initiate a second paging or a third paging when the receiving unit receives a notification that no paging response is received; The continuation paging unit is configured to send a continuation paging command to the base station controller or base transceiver station when the receiving unit determines to initiate the second paging unit or the third paging unit. 16. The mobile switching center according to claim 15, wherein the continuing paging unit comprises: The first continuation paging subunit is configured to send the notification to the base station controller if the range of the LAC where the base station controller that sends the notification is located is greater than the range controlled by the BSC when the judging unit judges that the second paging is initiated Send a paging command to continue paging; The second continuation paging subunit is configured to send a paging continuation command to all base station controllers in the LAC where the base station controller that sent the notification is located when the judging unit judges that a third paging is initiated . 17. The mobile switching center according to claim 16, wherein the first continuing paging subunit is further configured to, when the judging unit judges to initiate the second paging, if the base station sending the notification The range of the LAC where the controller is located is not larger than the range controlled by the BSC, and sends a paging command to continue paging to all base transceiver stations in the LAC. 18. A base station controller, characterized by comprising: a receiving unit, configured to receive a paging command sent by a mobile switching center; A search unit, configured to query its own database according to the cell information in the received paging command, and obtain a neighbor cell list of the cell where the called mobile station is last located; The first paging unit is configured to send a paging command to the base transceiver station of the cell and the neighboring cells of the cell. 19. The base station controller according to claim 18, wherein the receiving unit is further configured to receive a paging response from a base transceiver station; Then the base station controller further includes: The sending unit is configured to send the paging response to the mobile switching center when receiving the paging response. 20. The base station controller according to claim 19, wherein the sending unit is further configured to send a no paging response to the mobile switching center when the receiving unit does not receive a paging response within a set time. Notification to paging response. 21. The base station controller according to claim 20, wherein the receiving unit is further configured to receive a paging command sent by the mobile switching center to continue paging; Then the base station controller further includes: The second paging unit is configured to send a paging command to all base transceiver stations controlled by the base station controller when the receiving unit receives the paging command to continue paging.

Images