CN1901743B - A method for assigning a home paging controller in a mobile broadband wireless access system - Google Patents

Abstract

This invention discloses an assignment method for attribute paging controllers in a mobile broadband radio access system including: when a terminal enters into an idle mode, a service base station sends a request message that the terminal enters into idle mode to a local paging controller, which assigns a paging controller as the attribute paging controller of the terminal, the assigned controller receives the assignment or continues assigning other paging controllers the attribute paging controller of the terminal or feeds back failure response information to the controller assigning it, if a non-local paging controller receives the reponse information, it feeds back the response information to the controller, if the local paging controller assigns itself successfully or receives it successfully or fails many times, it feeds back the response information that the terminal enters into idle mode to the base station.

Description

A method for assigning a home paging controller in a mobile broadband wireless access system

technical field

The invention relates to a mobile broadband wireless access system, in particular to a method for assigning a home paging controller to a terminal in the system when it enters an idle mode.

Background technique

The IEEE802.16e standard is a broadband wireless access standard formulated by the IEEE standard organization. Compared with the IEEE802.16-2004 standard, 802.16e adds a lot of support for terminal mobility. Such as switching and power saving mechanisms.

Idle mode is a very important power saving mechanism in 802.16e systems. In order to support paging of terminals in idle mode, the protocol proposes the concept of paging area. Multiple base stations (BS) 101 are divided into one paging area, and overlapping between paging areas is allowed. A plurality of paging areas are managed by one paging controller (PC) 102 . As shown in Figure 1, BS0 and BS1 belong to paging group A, BS1 and BS2 belong to paging group B, PC0 manages paging group A, PC1 manages paging group B, PC0 and PC1 respectively correspond to the location register (LR) 103 is connected to save terminal related information.

When a terminal (MS) enters an idle mode, the network must assign a home paging controller to it, so as to save relevant information of the terminal and effectively manage the terminal in the idle mode. Therefore, assigning a home paging controller to a terminal entering the idle mode is an indispensable process for supporting the idle mode of the terminal. How to find a suitable paging controller and assign it to a terminal that is about to enter the idle mode is the research subject of the present invention.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method for assigning a home paging controller in a mobile broadband wireless access system, and solve the problem that the prior art cannot effectively assign a suitable home paging controller to a terminal entering idle mode question.

In order to achieve the above object, the present invention provides a method for assigning a home paging controller in a mobile broadband wireless access system, which is characterized in that it includes the following steps:

Step 1, when the terminal enters the idle mode, the serving base station sends a request message for the terminal to enter the idle mode to the local paging controller;

Step 2, the local paging controller assigns a paging controller as the terminal's home paging controller;

Step 3, the assigned paging controller accepts the assignment or continues to assign other paging controllers as the terminal's home paging controller, and returns an assignment response message to the assigned paging controller after accepting the assignment;

Or the assigned paging controller accepts the assignment or continues to assign other paging controllers as the home paging controller of the terminal, and if it does not accept and does not continue to assign other paging controllers, it will send the paging controller to assign it Return an assignment response message;

Or the assigned paging controller accepts the assignment or continues to assign other paging controllers as the home paging controller of the terminal, and does not accept but continues to assign other paging controllers. The paging controller returns an assignment response message;

Step 4, the non-local paging controller receives the assignment response message, if the assignment is successful or not accepted and the assignment is not continued, the non-local paging controller returns the assignment response message to the paging controller that assigned it; otherwise, the The non-local paging controller continues to assign other paging controllers as the terminal's home paging controller;

Step 5: If the local paging controller assigns itself successfully or receives a successful assignment response or multiple assignment failures, the local paging controller returns a terminal entry idle mode response message to the serving base station; otherwise, the The local paging controller continues to assign other paging controllers as the terminal's home paging controller.

The above-mentioned method is characterized in that, in the second step, the local paging controller assigns a paging controller as the home paging controller according to a set decision principle or by means of an entity in the access network where it is located. call controller.

The above-mentioned method is characterized in that said step three further includes:

Step a1, if the assigned paging controller does not accept the assignment but continues to assign other paging controllers as the home paging controller of the terminal under the condition that the maximum number of assignments has not been reached, then repeat step 3;

Step b1, if the assigned paging controller does not accept and does not continue to assign other paging controllers as the terminal's home paging controller, then send an assignment failure response message to the assigned paging controller.

Step c1, if the assigned paging controller accepts the assignment, send a response message of assignment success to the assigned paging controller.

The above-mentioned method is characterized in that said step four further includes:

Step a2, if the assignment response message is "failure" but continue to assign other paging controllers as the terminal's home paging controller under the condition that the maximum number of assignments has not been reached, then repeat step 3;

Step b2, if the assignment response message is "failed" and no other paging controller is assigned as the terminal's home paging controller, then the paging controller that receives the assignment response message sends the The call controller returns a response message of assignment failure;

Step c2, if the assignment response message is "successful", the paging controller that has received the assignment response message returns an assignment success response message to the paging controller that assigned it.

The above-mentioned method is characterized in that said step five further includes:

Step a3, if the assignment response message is "failed" but the maximum number of assignments has not been reached, continue to assign other paging controllers as the terminal's home paging controller, then repeat step 3;

Step b3, if the assignment response message is "failure" and no other paging controller is assigned as the terminal's home paging controller, return a response message indicating that the terminal failed to enter the idle mode to the serving base station;

In step c3, if the assignment response message is "successful", return a response message that the terminal enters the idle mode successfully to the serving base station.

The above-mentioned method is characterized in that, in the steps a1 and b1, the maximum number of assignments is the maximum number N of relay assignments, and when the number of relay assignments is greater than or equal to N, the paging controller will no longer continue the relay assignment and send The paging controller that assigned it feeds back an assignment failure response message; otherwise, continue to assign other paging controllers as the terminal's home paging controller.

The above-mentioned method is characterized in that, in the steps a2 and b2, the maximum number of assignments is the maximum number of assignments M of a single paging controller, and when the number of assignments by the paging controller is greater than or equal to M, then the paging The paging controller does not continue to assign, and returns a response message of assignment failure to the paging controller that assigned it; otherwise, continue to assign other paging controllers as the home paging controller of the terminal.

The above-mentioned method is characterized in that, in the steps a3 and b3, the maximum number of assignments is the maximum number of assignments K of the local paging controller, and when the number of assignments of the local paging controller is greater than or equal to K, then no longer Continue to assign, and return a response message that the terminal fails to enter the idle mode to the serving base station; otherwise, continue to assign other paging controllers as the terminal's home paging controller.

The above method is characterized in that at least the identifier of the assigned paging controller is carried in the assignment request message in the steps a1, a2, a3.

The above method is characterized in that the assignment request message in the steps a1, a2, a3 also carries the information that needs to be saved when the terminal enters the idle mode and the paging information recommended by the local paging controller.

The above method is characterized in that the paging controller assigns the assignment of the home paging controller by means of an entity in the access network where it is located or selects and obtains the assigned decision information for assignment.

Technical effect of the present invention is:

The method of the invention can assign a suitable home paging controller to the terminal when it enters the idle mode, so as to support the idle mode of the terminal and save system resources and power consumption of the terminal.

The method for assigning a home paging controller provided by the present invention can effectively assign a suitable home paging controller to a terminal entering idle mode, and avoid the failure of the terminal entering idle mode caused by the failure of home paging controller assignment, or the Improper assignment of paging controllers affects system performance.

Description of drawings

Fig. 1 is a schematic diagram of the logical entity constitution of the paging function of the 802.16e system;

Figure 2 is a schematic diagram of the 802.16e system networking;

Fig. 3 is a schematic diagram of the assignment flow of the home paging controller of the present invention.

Detailed ways

The present invention proposes a method, which can assign a suitable home paging controller to the terminal when it enters the idle mode, so as to support the terminal idle mode and save system resources and terminal power consumption.

In a mobile broadband wireless system, assigning a home paging controller to a terminal entering idle mode is an indispensable process for supporting terminal idle mode. The method of the invention can avoid the failure of the terminal to enter the idle mode caused by the assignment failure of the home paging controller, or the influence on the performance of the system due to the inappropriate assignment of the home paging controller. The method of the present invention mainly includes: when a certain terminal is about to enter the idle mode, the access network can try to assign a local paging controller (Local PC) in the access network as the home paging controller of the terminal, or Assigning other paging controllers as home paging controllers for the terminal. If the assigned home paging controller finds itself unsuitable, the assigned home paging controller can continue to assign other paging controllers as the terminal's home paging controller, and can also send the local access network A response of assignment failure is returned, and the local paging controller reassigns another paging controller as the home paging controller of the terminal.

The inventive method specifically comprises the following steps:

In the first step, when the terminal enters the idle mode, the local paging controller in the serving access network will receive the terminal entering the idle mode request message sent by the serving base station.

In the second step, the local paging controller assigns itself or other paging controllers as the terminal's home paging controller according to a certain principle (or by means of other entities in the access network).

third step,

a) If the assigned paging controller thinks that it is not suitable as the home paging controller of the terminal, then return a failure response to the local paging controller and go to the second step, or assign (or use Other entities in the access network assign) other paging controllers as the terminal's home paging controller and repeat this step;

b) If the assigned paging controller accepts the assignment or does not accept and does not continue to assign other paging controllers as the terminal's home paging controller, send an assignment response message to the assigned paging controller.

In the fourth step, the local paging controller returns a terminal entering idle mode response message to the serving base station after receiving a successful assignment response or multiple assignment failures.

Further description will be made below in conjunction with the accompanying drawings.

The network structure of the 802.16e system is shown in Figure 2. It includes: a terminal 201, a base station 202 and an access gateway 203 connected to the core network.

Figure 3 is a schematic flow diagram of a network assigning a home paging controller to a terminal that is about to enter an idle mode.

The specific process in Figure 3 is described as follows:

Step 1) When a certain terminal needs to enter the idle mode, the serving base station sends a request message for the terminal to enter the idle mode to the local paging controller, requesting the local paging controller to assign the home paging controller of the terminal. The message may also carry information that needs to be saved when the terminal enters the idle mode.

Step 2) The local paging controller assigns itself as the home paging controller of the terminal according to certain principles or sends a home paging controller to other paging controllers (the paging controller in the access network (b) in the diagram) A paging controller assignment request message attempts to assign it as the terminal's home paging controller. The message may also include information to be saved when the terminal enters the idle mode and paging information recommended by the local paging controller. If assigning itself as the paging controller of the terminal succeeds, then go to step 8) and return a successful idle mode entry response message to the serving base station.

Step 3) After the paging controller in the access network (b) receives the home paging controller assignment request message, it processes according to the following judging principles:

a) If the assignment is accepted or the assignment is not accepted and no other paging controller is assigned as the terminal's home paging controller, go to step 5).

b) If the assignment is not accepted, the paging controller in the access network (b) can also send a home paging controller assignment request message to continue assignment under certain conditions (such as the maximum number of assignments of the paging controller has not yet been reached) The other paging controller (the paging controller in the access network (c) in the diagram) is the home paging controller of the terminal.

Step 4) The paging controller in the access network (c) repeats the similar process in step 3) after receiving the home paging controller assignment request message. This process will finally get the result of assignment success or failure, and return a home paging controller assignment response message to the paging controller in the access network (b).

Step 5) The paging controller in the access network (b) returns a home paging controller assignment response message to the local paging controller. If the paging controller in the access network (b) receives a failed response message, it can continue to assign other paging controllers to be the home paging of the terminal under certain conditions (such as the maximum number of relay assignments has not yet been reached). call controller (not shown in the diagram).

Step 6) After the local paging controller receives the assignment response message of the home paging controller, if it is assigned successfully or no longer continues to assign, it then proceeds to step 8), otherwise under certain conditions (such as the local paging controller's The maximum number of assignments has not yet been reached) continue to assign other paging controllers (the paging controllers in the access network (d) in the schematic diagram) to be the home paging controllers of the terminal.

Step 7) The assigned paging controller repeats the similar process in step 3), and returns an assignment response message to the local home paging controller.

Step 8) The local paging controller returns a terminal entry control mode response message to the serving base station, and the message contains an indication of success or failure.

As can be seen from the above, the home paging controller assignment method provided by the present invention can effectively assign a suitable home paging controller to the terminal entering the idle mode, and avoid the terminal entering the idle mode caused by the failure of the assignment of the home paging controller fail, or affect the performance of the system due to improper assignment of the home paging controller.

Of course, the present invention can also have other various embodiments, such as using other entities in the access network to assign a home paging controller. Without departing from the spirit and essence of the present invention, those skilled in the art should Various corresponding changes and modifications can be made according to the present invention, but these corresponding changes and modifications should belong to the protection scope of the appended claims of the present invention.

Claims (7)

1. A method for assigning a home paging controller in a mobile broadband wireless access system, characterized in that, comprising the steps: Step 1, when the terminal enters the idle mode, the serving base station sends a request message for the terminal to enter the idle mode to the local paging controller; Step 2, the local paging controller assigns a paging controller as the terminal's home paging controller; Step 3, the assigned paging controller accepts the assignment or continues to assign other paging controllers as the terminal's home paging controller, and returns an assignment response message to the assigned paging controller after accepting the assignment; Step 4, the non-local paging controller receives the assignment response message, if the assignment is successful or not accepted and the assignment is not continued, the non-local paging controller returns the assignment response message to the paging controller that assigned it; otherwise, the The non-local paging controller continues to assign other paging controllers as the terminal's home paging controller; Step 5: If the local paging controller assigns itself successfully or receives a response of assignment success, the local paging controller returns a terminal entering idle mode response message to the serving base station; otherwise, the local paging controller The controller continues to assign other paging controllers as the home paging controller of the terminal. 2. The method according to claim 1, characterized in that, in said step 2, said local paging controller assigns a paging controller according to a set decision principle or by means of an entity in the access network where it is located The controller serves as the home paging controller. 3. The method according to claim 1, wherein said step 3 further comprises: Step a1, if the assigned paging controller does not accept the assignment but continues to assign other paging controllers as the home paging controller of the terminal under the condition that the maximum number of assignments has not been reached, then repeat step 3; Step b1, if the assigned paging controller does not accept and does not continue to assign other paging controllers as the home paging controller of the terminal, then send a response message of assignment failure to the paging controller that assigned it; Step c1, if the assigned paging controller accepts the assignment, send a response message of assignment success to the assigned paging controller. 4. The method according to claim 1, wherein said step 4 further comprises: Step a2, if the assignment response message is "failure" but continue to assign other paging controllers as the terminal's home paging controller under the condition that the maximum number of assignments has not been reached, then repeat step 3; Step b2, if the assignment response message is "failed" and no other paging controller is assigned as the terminal's home paging controller, then the paging controller that receives the assignment response message sends the The call controller returns a response message of assignment failure; Step c2, if the assignment response message is "successful", the paging controller that has received the assignment response message returns an assignment success response message to the paging controller that assigned it. 5. The method according to claim 1, wherein said step 5 further comprises: Step a3, if the assignment response message is "failed" but the maximum number of assignments has not been reached, continue to assign other paging controllers as the terminal's home paging controller, then repeat step 3; Step b3, if the assignment response message is "failure" and no other paging controller is assigned as the terminal's home paging controller, return a response message indicating that the terminal failed to enter the idle mode to the serving base station; In step c3, if the assignment response message is "successful", return a response message that the terminal enters the idle mode successfully to the serving base station. 6. The method according to claim 4, characterized in that, in said steps a2 and b2, the maximum number of assignments is the maximum number of assignments M of a single paging controller, when said paging controller has assigned the number of times When greater than or equal to M, the paging controller does not continue to assign, and returns a response message of assignment failure to the paging controller that assigned it; otherwise, continue to assign other paging controllers as the home paging controller of the terminal. 7. The method according to claim 5, characterized in that, in said steps a3 and b3, the maximum number of assignments is the maximum number of assignments K of the local paging controller, when the number of assignments of the local paging controller is greater than When it is equal to K, the assignment is no longer continued, and a response message that the terminal fails to enter the idle mode is returned to the serving base station; otherwise, other paging controllers are continued to be assigned as the home paging controller of the terminal.

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