CN102065539B - Paging method, system and switch device - Google Patents

Abstract

The invention discloses a paging method, system and switch, wherein the paging method includes: after the paging fails, the switch queries the location area where the called terminal is located, and sends a paging call to the base station controller in the location area. The base station controller sends the paging message to the corresponding called terminal; the called terminal returns a paging response to the switch through the base station controller. Various embodiments of the present invention can track the location change of the called terminal and improve paging efficiency.

Description

A paging method, system and switch

technical field

The invention relates to voice and data service call establishment technology in the field of communication, in particular to a paging method, system and exchange.

Background technique

The existing mobile communication network structure is shown in Figure 1. One or more Base Station Controllers (BSC) are controlled under one switch (Mobile Switching Center, hereinafter referred to as MSC), and one or more Base Station Controllers (BSC) are controlled under one switch. location areas.

When the paging arrives, the switch will determine the location area where the called terminal is located, and send the paging message to the base station controller in the corresponding location area, and the base station controller will send the paging message to all users under the location area through the broadcast channel. After receiving the paging message, the user and the called terminal will respond to the paging and complete the paging process.

Due to the short-term abnormality of a small number of terminals or the sudden deterioration of the wireless channel, the paging message cannot be correctly interpreted, resulting in no paging response. The switch will directly initiate a second paging in the case of a paging failure to improve paging Call completion rate, as shown in Figure 2. However, when the switch performs secondary paging, it often performs repeated paging directly in the location area of the first paging, but when the called terminal performs location update across location areas, if the called terminal initiates a second paging in the original location area paging, the called terminal will not be able to receive the paging message, so there is no paging response, resulting in secondary paging failure, as shown in Figure 3.

To sum up, when the called terminal crosses the location area, the method of performing secondary paging in the original location area in the prior art cannot solve the problem of no response to the paging.

Contents of the invention

The first object of the present invention is to provide a paging method to improve paging efficiency.

The second object of the present invention is to provide a switch to improve paging efficiency.

The first object of the present invention is to provide a paging system to improve paging efficiency.

In order to achieve the above first object, according to one aspect of the present invention, a paging method is provided, including: after the paging fails, the switch queries the location area where the called terminal is located, and sends a A paging message; the base station controller sends the paging message to the corresponding called terminal; the called terminal returns a paging response to the switch through the base station controller.

Further, the switch querying the location area where the called terminal is located, and sending the paging message to the base station controller in the location area may include: the switch querying the location area where the called terminal is located; the switch sending the paging message to the switch in the location area where the called terminal is located. The notification message notifies the called terminal to perform paging; the switch in the location area where the called terminal is located sends a paging message to the base station controller in the location area.

Further, the switch querying the location area of the called terminal may include: the switch querying the VLR for the location area of the called terminal; or the switch querying the HLR for the location area of the called terminal.

In order to achieve the above second object, according to another aspect of the present invention, a switch is provided, including: a processing module, configured to query the location area where the called terminal is located after receiving a service establishment request for the called terminal, And re-query the location area where the called terminal is located after the paging fails; the sending module is used to send a paging message to the base station controller in the location area where the called terminal is located; the receiving module is used to receive the paging message forwarded by the base station controller Respond.

Further, the processing module may include: a query submodule, configured to query the location area where the called terminal is located; a control submodule, configured to control the query submodule if the receiving module has not received a paging response after the paging timer expires. Re-query the location area where the called terminal is located.

In order to achieve the above-mentioned third purpose, according to another aspect of the present invention, a paging system is provided, including: a switch, which is used to inquire about the location area where the called terminal is located after the paging fails, and send a call to the base station in the location area to control The device sends a paging message and receives the paging response returned by the called terminal through the base station controller; the base station controller is used to forward the paging message sent by the switch to the called terminal Forwarding to the switch; the called terminal is used to receive the paging message sent by the switch through the base station controller, and return a paging response to the switch through the base station controller.

The paging method, system and switch in each embodiment of the present invention, when the switch fails in paging, the location area where the called terminal is located is inquired again before the second paging, and paging is initiated in the location area obtained from the query, which can maximize Track the change of the location of the called terminal, improve the effectiveness of paging, and avoid the paging non-response phenomenon when the called terminal crosses the location area, thereby reducing the occurrence of unconnected events and improving the paging efficiency.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

FIG. 1 is a schematic structural diagram of a mobile communication network according to the prior art;

Fig. 2 is the flow chart of the paging signaling of the exchange to the called terminal according to the prior art;

Fig. 3 is a schematic diagram of the relationship between the called terminal location update and paging according to the prior art;

FIG. 4 is a flow chart of Embodiment 1 of the paging method according to the present invention;

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

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

FIG. 7 is a flow chart of Embodiment 2 of the paging method according to the present invention;

Fig. 8 is a flow chart of the paging signaling of the switch to the called terminal according to the present invention.

Detailed ways

The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

Fig. 4 is a flow chart of Embodiment 1 of the paging method according to the present invention. As shown in Fig. 4, this embodiment includes:

Step S402, after the paging fails, the switch queries the location area where the called terminal is located, and sends a paging message to the base station controller in the location area;

Step S404, the base station controller sends the paging message to the corresponding called terminal;

Step S406, the called terminal returns a paging response to the switch through the base station controller.

In the paging method of this embodiment, the switch re-inquires the location area where the called terminal is located before paging again, and initiates paging in the location area obtained from the query, which can track the change of the location of the called terminal to the greatest extent and improve paging. The effectiveness of paging avoids the paging non-response phenomenon when the called terminal crosses the location area, thereby reducing the occurrence of unconnected events and improving paging efficiency.

Fig. 5 is a schematic structural diagram of an embodiment of a switch according to the present invention. As shown in Fig. 5, this embodiment includes:

The processing module 50 is configured to query the location area where the called terminal is located after receiving the service establishment request for the called terminal, and re-query the location area where the called terminal is located after the paging fails;

A sending module 52, configured to send a paging message to the base station controller of the location area;

The receiving module 54 is configured to receive the paging response forwarded by the base station controller.

Further, the processing module 50 may include:

Inquiry sub-module 51, used to inquire about the location area where the called terminal is located;

The control submodule 53 is configured to control the query submodule 51 to re-query the location area of the called terminal if the receiving module 54 has not received a paging response after the paging timer expires.

Further, query submodule 51 may include:

The first query unit is configured to query the location area of the called terminal from the visitor location register; or

The second query unit is configured to query the home location register for the location area where the called terminal is located.

The switch in this embodiment, after paging fails, re-queries the location area of the called terminal before paging again, and initiates paging in the location area obtained from the query, which can track the change of the location of the called terminal to the greatest extent, and improve The effectiveness of paging avoids the paging non-response phenomenon when the called terminal crosses the location area, thereby reducing the occurrence of unconnected events and improving the paging efficiency.

Fig. 6 is a schematic structural diagram of an embodiment of a paging system according to the present invention. As shown in Fig. 6, this embodiment includes:

The switch 60 is configured to query the location area where the called terminal is located after the paging fails, and send a paging message to the base station controller 62 in the location area, and receive the paging response returned by the called terminal 64 through the base station controller 62 ;

The base station controller 62 is configured to forward the paging message sent by the switch 60 to the called terminal 64, and forward the paging response returned by the called terminal 64 to the switch 60;

The called terminal 64 is configured to receive the paging message sent by the switch 60 through the base station controller 62 , and return a paging response to the switch 60 through the base station controller 62 .

Further, the system may also include:

The visitor location register 66 is used to provide the location area where the called terminal is located to the switch 60; or

The home location register 68 is used to provide the switch 60 with the location area where the called terminal is located.

For the internal structure of the switch 60, reference may be made to the embodiment shown in FIG. 5 .

In the paging system of this embodiment, the switch re-inquires the location area of the called terminal before paging, and initiates paging in the location area obtained from the query, which can track the change of the location of the called terminal to the greatest extent, and improve the paging efficiency. Effectiveness avoids the paging non-response phenomenon that occurs when the called terminal crosses the location area, thereby reducing the occurrence of unconnected events and improving paging efficiency.

FIG. 7 is a flow chart of Embodiment 2 of the paging method according to the present invention. As shown in FIG. 7, this embodiment includes:

Step S701, the switch queries the location area where the called terminal is located, and sends a paging message to the called terminal through the base station controller in the location area;

After receiving the service establishment request for the called terminal, the switch needs to page the called terminal. Firstly, the location area where the called terminal is located is queried. Specifically, the switch can obtain the location area where the called terminal is located by querying the visiting location register, and can also obtain the location area where the called terminal is located by querying the home location register;

Step S702, the switch has not received the paging response returned by the called terminal after the paging timer expires;

It may be because the called terminal is abnormal for a short time or the wireless channel suddenly deteriorates, or the called terminal enters a new location area after performing location update, so the called terminal does not receive the paging message. The paging response returned by the called terminal is received. In practical applications, the paging timer can be set to 4 seconds, because generally the called terminal can complete the location update within 3.5 seconds;

Step S703, the switch re-queries the location area where the called terminal is located;

Step S704, judging whether the location area of the called terminal has changed, if so, turn to step S705, if not, turn to step S706;

Step S705, the switch sends a paging message to the called terminal through the base station controller of the new location area where the called terminal is located;

If the location area of the called terminal changes, it means that the called terminal has updated its location. The switch needs to page the called terminal in the new location area, and the switch sends a call to the base station controller in the new location area where the called terminal Send a paging message, and the new base station controller sends the call message to the called terminal; when the switch finds that the new location area where the called terminal is located is controlled by another new switch, the switch also needs to notify the new location area. switch, and the new switch sends a paging message to the base station controller in the new location area where the called terminal is located;

Step S706, the switch sends a paging message to the called terminal through the base station controller in the location area where the called terminal was previously located;

If the location area of the called terminal does not change, it means that the called terminal has not updated its location. It is because the terminal cannot respond to the paging message due to a short-term abnormality or sudden degradation of the wireless channel. The terminal performs paging, and the switch sends a paging message to the base station controller in the location area where the called terminal was previously located, and the base station controller sends the paging message to the called terminal;

Step S707, the called terminal returns a paging response to the base station controller;

The called terminal returns a paging response to the base station controller that sent the paging message;

Step S708, the base station controller forwards the paging response to the switch.

After receiving the paging response, the base station controller forwards the paging response to the switch that sent the paging message. If the new switch sends a paging message to the base station controller in the new location area where the called terminal is located, the new base station controller returns a paging message to the new switch after receiving the paging response returned by the called terminal. Respond.

After the above steps are completed, the switch realizes the paging of the called terminal, and the switch can learn the specific information of the called terminal, and then establish the voice or data service of the called terminal.

For the paging method in this embodiment, reference may also be made to the flow chart of paging signaling from the switch to the called terminal shown in FIG. 8 .

In the paging method of this embodiment, the exchange initiates a second paging after the first paging fails, and re-queries the location area of the called terminal before the second paging. The location area of the called terminal initiates paging; if the location area of the called terminal does not change, it initiates paging in the previous location area. This embodiment can track the change of the location of the called terminal. After the location of the called terminal is updated, the called terminal can also be paged, which avoids the paging non-response phenomenon that occurs when the called terminal crosses the location area, thereby Reduce the occurrence of unconnected events and improve paging efficiency.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. a paging method, is characterized in that, comprising:

The business that switch receives for terminal called sets up request;

The lane place at terminal called place described in described switch query, and by the base station controller issuing page message of described lane place to terminal called;

After paging timer expired, described switch does not receive the page response that described terminal called returns;

After paging failure, the lane place at described switch query terminal called place, and to the base station controller issuing page message of described lane place;

Described beep-page message is sent to corresponding terminal called by described base station controller;

Described terminal called returns page response by described base station controller to described switch.

2. paging method according to claim 1, is characterized in that, the lane place at described switch query terminal called place, and comprises to the base station controller issuing page message of described lane place:

The lane place at switch query terminal called place;

Described switch sends a notification message to the switch in terminal called position district, notifies to carry out paging to described terminal called;

The switch in terminal called position district is to the base station controller issuing page message of described lane place.

3. paging method according to claim 1 and 2, is characterized in that, the lane place at described switch query terminal called place comprises:

Described switch is to the lane place at VLR Visitor Location Register inquiry terminal called place; Or

Described switch is to the lane place at attaching position register inquiry terminal called place.

4. a switch, is characterized in that, comprising:

Processing module, for after receiving the business foundation request for terminal called, the lane place at inquiry terminal called place, and after paging failure, again inquire about the lane place at terminal called place;

Sending module, for the base station controller issuing page message to described terminal called position district;

Receiver module, for receiving the page response that described base station controller forwards;

Described processing module comprises:

Inquiry submodule, for inquiring about the lane place at terminal called place;

Control submodule, if not yet receive page response for described receiver module after paging timer expired, control the lane place that described inquiry submodule inquires about terminal called place again.

5. switch according to claim 4, is characterized in that, described inquiry submodule comprises:

First query unit, for the lane place to VLR Visitor Location Register inquiry terminal called place;

Second query unit, for the lane place to attaching position register inquiry terminal called place.

6. a paging system, is characterized in that, comprising:

Switch, for inquiring about the lane place at terminal called place after paging failure, and to the base station controller issuing page message of described lane place, receives the page response that described terminal called is returned by described base station controller;

Described base station controller, the beep-page message for being sent by described switch is forwarded to described terminal called, and the page response that described terminal called returns is forwarded to described switch;

Described terminal called, for receiving the beep-page message that described switch is sent by described base station controller, and returns page response by described base station controller to described switch;

Described switch comprises:

Processing module, for after receiving the business foundation request for terminal called, the lane place at inquiry terminal called place, and after paging failure, again inquire about the lane place at terminal called place;

Sending module, for the base station controller issuing page message to described terminal called position district;

Receiver module, for receiving the page response that described base station controller forwards;

Described processing module comprises:

Inquiry submodule, for inquiring about the lane place at terminal called place;

Control submodule, if not yet receive page response for described receiver module after paging timer expired, control the lane place that described inquiry submodule inquires about terminal called place again.

7. paging system according to claim 6, is characterized in that, described system also comprises:

VLR Visitor Location Register, for providing the lane place at terminal called place to described switch; Or

Attaching position register, for providing the lane place at terminal called place to described switch.