WO2011144121A2

WO2011144121A2 - Method and device for load control in wireless communication network

Info

Publication number: WO2011144121A2
Application number: PCT/CN2011/074891
Authority: WO
Inventors: 王学亮; 王春声; 刘冰
Original assignee: 华为技术有限公司
Priority date: 2011-05-30
Filing date: 2011-05-30
Publication date: 2011-11-24
Also published as: CA2836330C; SG194897A1; CA2836330A1; CN102918890B; CN102918890A; WO2011144121A3

Abstract

A method and a device for load control in wireless communication network are provided by the invention. The method includes the following steps: a Radio Network Controller (RNC) receives a connection request of a Radio Resource Control (RRC) sent by a base station; the RNC obtains flow control grade of the base station; the RNC compares the flow control grade of the base station with a threshold value, then refuses or processes the connection request of the RRC selectively according to the comparison result. In the invention, the RNC processes the RRC connection request of each NodeB differently according to the specific load using status of each NodeB, thus processing flow control differently for each NodeB.

Description

Load control method and device in wireless communication network

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a load control method and apparatus in a wireless communication network.

Background technique

With UMTS (Universal Mobile Telecommunications System, universal mobile communication system) popularization of the network and intelligent equipment (customer equipment (subscriber With the widespread application of the installation, the user equipment, the impact of the UE on the RAN (Radio Access Network) is increasing.

When the UE requests access to a NodeB (base station), the UE sends RRC (Radio Resource) to the NodeB. Control, radio resource control) connection request, the NodeB sends the received RRC connection request to the RNC (Radio Network The controller, the radio network controller, selects to reject or process the RRC connection request by the RNC, and notifies the NodeB to reject or permit the UE to access. When the number of UEs accessing within a NodeB is too large, the NodeB will become the bottleneck of the entire UMTS network.

A load control method in a UMTS network in the prior art is that the RNC decides to reject or process the RRC connection request of all NodeBs according to the load resource usage of all NodeBs under its jurisdiction.

In the prior art, the RNC cannot perform different processing on the RRC connection request of each NodeB according to the specific load usage status of each NodeB, and performs differentiated flow control on each NodeB.

Summary of the invention

The embodiments of the present invention provide a load control method and apparatus in a wireless communication network, so that the RNC performs differentiated flow control on each NodeB according to the specific load usage status of each NodeB.

In one aspect, a load control method in a wireless communication network is provided, including:

Receiving, by the radio network controller, the radio resource control RRC connection request sent by the base station, where the RNC acquires a traffic control level of the base station;

The RNC selects to reject or process the RRC connection request according to the traffic control level of the base station.

In another aspect, a load control method in a wireless communication network is provided, including:

Receiving, by the base station, a load status request sent by the radio network controller RNC;

The base station sends a load status report to the RNC, where the load status report carries load information of the base station, so that the RNC determines a flow control level of the base station according to load information of the base station.

In another aspect, a load control apparatus in a wireless communication network is provided, the apparatus being disposed in a radio network controller RNC, where the apparatus specifically includes:

a base station flow control level acquiring module, configured to receive a radio resource control RRC connection request sent by the base station, and acquire a flow control level of the base station;

The control processing module is configured to select to reject or process the RRC connection request according to the flow control level of the base station acquired by the base station flow control level acquiring module.

In another aspect, a load control apparatus in a wireless communication network is provided, the apparatus is disposed in a base station, and the apparatus specifically includes:

a load status request receiving module, configured to receive a load status request sent by the radio network controller RNC;

a load status report sending module, configured to send a load status report to the RNC, where the load status report carries load information of the base station, so that the RNC determines flow control of the base station according to load information of the base station grade.

As can be seen from the technical solution provided by the foregoing embodiment of the present invention, the embodiment of the present invention selects to reject or process the RRC connection request according to the flow control level of the NodeB by the RNC. Therefore, the RNC can perform different processing on the RRC connection request of each NodeB according to the specific load usage status of each NodeB, and perform differentiated flow control on each NodeB.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a flowchart of processing of a load control method in a wireless communication network according to Embodiment 1 of the present invention;

2 is a flowchart of processing of a load control method in a wireless communication network according to Embodiment 2 of the present invention;

3 is a schematic structural diagram of a load control apparatus in a wireless communication network according to Embodiment 3 of the present invention;

4 is a schematic structural diagram of a load control apparatus in another wireless communication network according to Embodiment 3 of the present invention;

FIG. 5 is a structural diagram of a load control apparatus in another wireless communication network according to Embodiment 3 of the present invention.

Mode for carrying out the invention

Embodiment 1

The processing flow of the load control method in a wireless communication network provided by this embodiment is as shown in FIG. 1 , and includes:

11. The RNC receives the RRC connection request sent by the NodeB, and the RNC acquires the traffic control level of the NodeB.

For example, the RNC may receive a load status report that is sent by the NodeB and includes load information of the NodeB, and determine a flow control level of the NodeB according to the load information of the NodeB.

Further, the load information of the foregoing NodeB may be load overload indication information or load normal indication information, and the RNC determines according to the quantity of the load overload indication information and the load normal indication information received within a set time. The flow control level of the NodeB.

12. The RNC selects to reject or process the RRC connection request according to a traffic control level of the NodeB.

For example, the RNC compares the traffic control level of the NodeB with a threshold, and selects to reject or process the RRC connection request according to the comparison result.

Further, the RNC may convert the flow control level of the NodeB into a flow control probability factor, the flow control probability factor is proportional to the flow control level, and the flow control probability factor is an integer;

The RNC may generate a random number, where the random number is an integer. When the flow control probability factor is greater than the flow control probability factor, the RRC connection request is rejected, otherwise, the RRC connection request is processed.

It can be seen from the technical solution provided by the foregoing embodiment that the RNC rejects or processes the RRC connection request according to the flow control level of the NodeB. Therefore, the RNC can perform different processing on the RRC connection request of each NodeB according to the specific load usage status of each NodeB, and perform differentiated flow control on each NodeB.

Embodiment 2

The processing flow of the load control method in a wireless communication network provided by this embodiment is as shown in FIG. 2, and includes:

21. The lub port between the RNC and the NodeB can transmit a load status request and a load status report in the embodiment of the present invention. The load status request is used by the RNC to notify the NodeB to perform load status information reporting, and the load status report is used by the NodeB to report load status information to the RNC.

When the RNC needs to know the load status information of the NodeB, the RNC may send a load status request to the NodeB and start timing of the load status statistics timer.

After receiving the load status request, the NodeB sends a load status report to the RNC, where the load status report carries load information of the NodeB.

For example, after receiving the load status request, the NodeB determines whether the load exceeds a preset threshold according to a set time interval, and if yes, sends a load carrying the load overload indication information to the RNC. Status report; otherwise, a load status report carrying the load normal indication information is sent to the RNC.

Further, the NodeB may determine whether the used power resource exceeds a preset power resource congestion threshold according to a set time interval (for example, 5 seconds), and determine whether the used signaling resource exceeds a preset value. Signaling resource congestion threshold.

When the NodeB determines that the power resource used by the Node exceeds the power resource congestion threshold and/or the signaling resource used by the NodeB exceeds the signaling resource congestion threshold, sends a load status report carrying the load overload indication information to the RNC; otherwise Sending a load status report carrying the load normal indication information to the RNC.

The RNC receives the load status report sent by the NodeB, and determines the flow control level of the NodeB according to the load information of the NodeB carried in the load status report.

For example, the RNC may determine the flow control level of the NodeB according to the quantity of the load overload indication information and the load normal indication information received within a set time. Specifically, the RNC increases the value of the saved flow control level of the NodeB by a set value when the load status report carries the load overload indication information within the time duration of the load status statistics timer; When the load status report carries the load normal indication information, the value of the stored flow control level of the NodeB is decreased by a set value.

Exemplarily, the value of the traffic control level of the NodeB may be in the range of 0-10, and represents 10 levels of the flow control level of the NodeB. The above setting value can be 1.

24. The RNC may compare the traffic control level of the NodeB with a threshold, and select to reject or process the RRC connection request according to the comparison result.

Further, the RNC converts the flow control level of the NodeB into a flow control probability factor, the flow control probability factor is proportional to the flow control level, and the flow control probability factor is an integer, for example, An integer between 0 and 100.

The RRC connection request sent by the mobile terminal received by the NodeB is random. The embodiment of the present invention uses a random number as a threshold. The RNC generates a random number, which is an integer, for example, may be an integer between 0 and 100. When the flow control probability factor is greater than the random number, the RRC connection request is rejected, otherwise, the RRC connection request is processed, and the NodeB is notified to accept the mobile terminal's access request.

Further, in the above 21, the embodiment of the present invention may further transmit a load status termination message on the lub interface between the RNC and the NodeB, where the load status termination message is used by the RNC to notify the NodeB to stop reporting the load status information.

Therefore, in the above 23, after the end of the timer duration of the load status statistics timer, the RNC stops transmitting the load status report after transmitting the load status termination message to the NodeB. After receiving the load status termination message sent by the RNC, the NodeB stops sending a load status report to the RNC.

The RNC saves the value of the flow control level of the NodeB obtained last time. According to the above process, the RNC can acquire and save the value of the flow control level of all NodeBs under its jurisdiction.

Further, in the above 21, the embodiment of the present invention may also start the timing of the congestion statistics interval timer when the RNC starts the timing of the load state statistics timer, and the timing of the congestion statistics interval timer is less than the timing. The duration of the load status statistics timer.

Therefore, in the above 23, the RNC does not process the received load status report sent by the NodeB until the timing of the congestion statistics interval timer has not ended. After the timing of the congestion statistics interval timer ends, before the end of the counting of the load state statistics timer, the received load status report sent by the NodeB is processed to acquire the load carried in the load status report. Overload indication information or load normal indication information.

The congestion statistics interval timer is used to set a time interval for the load state information of the NodeB to prevent the NodeB from repeatedly reporting the load overload indication information in a relatively short period of time.

It can be seen from the technical solution provided by the foregoing embodiment that the RNC senses the load usage of the NodeB according to the received load status report sent by the NodeB, and selects to reject or process the RRC according to the load usage of the NodeB. Connection request. Therefore, the RNC can perform different processing on the RRC connection request of each NodeB according to the specific load usage status of each NodeB, and perform differentiated flow control on each NodeB.

The RNC can set the load state statistics timer and the congestion statistics interval timer to flexibly control the statistics duration and statistics interval of the load usage of the NodeB. This prevents the NodeB from repeatedly reporting the load overload indication information in a relatively short period of time. . The NodeB can flexibly send a load status report carrying the load overload indication information or the load normal indication information to the RNC according to the power resource or signaling resource used by the NodeB.

Embodiment 3

The embodiment provides a load control device in a wireless communication network, and the device may be disposed in an RNC. The specific structure of the device is as shown in FIG.

The traffic control level obtaining module 31 is configured to receive a radio resource control RRC connection request sent by the NodeB, and obtain a flow control level of the NodeB.

The control processing module 32 is configured to select to reject or process the RRC connection request according to the flow control level of the NodeB acquired by the flow control level acquiring module.

The embodiment further provides a load control device in another wireless communication network, and the device may be disposed in the RNC. The specific structure of the device is as shown in FIG. 4, and specifically includes:

The traffic control level obtaining module 41 is configured to: after receiving the radio resource control RRC connection request sent by the NodeB, acquire a flow control level of the NodeB;

The control processing module 42 is configured to compare the flow control level of the NodeB acquired by the flow control level obtaining module 41 with a threshold value, and select to reject or process the RRC connection request according to the comparison result.

Specifically, the flow control level obtaining module 41 may include:

The load status report receiving module 411 is configured to receive a load status report sent by the NodeB, where the load status report carries load information of the NodeB;

The flow control level determining module 412 is configured to determine a flow control level of the base station according to load information of the NodeB.

Further, the flow control level determining module 412 can include:

The timing control module 4121 is configured to send a load status request to the NodeB, and start timing of the load status statistics timer.

The calculation processing module 4122 is configured to determine a flow control level of the NodeB according to the quantity of the load overload indication information and the load normal indication information received within the time duration of the load status statistics timer. Specifically, the load status report sent by the NodeB according to the set time interval is received during the time duration of the load status statistics timer, and when the load status report carries the load overload indication information, the RNC saves The value of the flow control level of the NodeB is increased by a set value; when the load status report carries the load normal indication information, the value of the flow control level of the NodeB is decreased by a set value. Exemplarily, the value of the traffic control level of the NodeB may be in the range of 0-10, and represents 10 levels of the flow control level of the NodeB. The above setting value may be 1. When the value of the calculated flow control level is greater than 10, the value of the flow control level is also taken as 10. When the calculated value of the flow control level is less than 0, the value of the flow control level is also taken. 0.

Further, the timing control module 4121 is further configured to: after the timing of the load status statistics timer ends, the RNC sends a load status termination message to the NodeB;

The calculation processing module 4122 is further configured to stop receiving the load status report, and save the last obtained value of the flow control level of the NodeB.

Further, the timing control module 4121 is further configured to: when the timing of the load state statistics timer is started, start timing of the congestion statistics interval timer, where the timing of the congestion statistics interval timer is less than the load The timing of the status statistics timer;

The calculation processing module 4122 is further configured to: before receiving the counting of the negative congestion statistical interval timer, not processing the received load status report sent by the NodeB, where the congestion statistics interval timer is After the timer expires, the received load status report sent by the NodeB is processed.

Specifically, the control processing module 42 may include:

The comparison processing module 421 is configured to compare the flow control level of the NodeB with a threshold value;

The selection processing module 422 is configured to select to reject or process the RRC connection request according to the comparison result obtained by the comparison processing module.

Further, the comparison processing module 421 is further configured to convert a flow control level of the NodeB into a flow control probability factor, where the flow control probability factor is proportional to the flow control level, and the flow control probability The factor is an integer between 0 and 100;

The selection processing module 422 is further configured to generate a random number, where the random number is an integer between 0 and 100, and when the flow control probability factor acquired by the conversion processing module is greater than the random number, the method is rejected. The RRC connection request, otherwise, processes the RRC connection request.

The embodiment further provides a load control device in another wireless communication network, and the device may be disposed in a NodeB. The specific structure of the device is as shown in FIG. 5, and specifically includes:

The load status request receiving module 51 is configured to receive a load status request sent by the RNC.

The load status report sending module 52 is configured to send a load status report to the RNC, where the load status report carries the load information of the NodeB, so that the RNC determines the traffic of the NodeB according to the load information of the NodeB. Control level.

Specifically, the load status report sending module 52 is further configured to: after receiving the load status request, determine whether the load of the NodeB exceeds a preset threshold according to the set time interval, and if yes, Sending a load status report carrying the load overload indication information to the RNC; otherwise, transmitting a load status report carrying the load normal indication information to the RNC.

Further, after receiving the load status request, the load status report sending module 52 may determine, according to a set time interval (for example, 5 seconds), whether the power resource used by the base station exceeds a preset power resource congestion. The threshold is used to determine whether the signaling resource used by the base station exceeds a preset signaling resource congestion threshold. The signaling resource may be a signaling board CPU.

When the load status report sending module 52 determines that the power resource used by the base station exceeds the power resource congestion threshold and/or the signaling resource used by the base station exceeds the signaling resource congestion threshold, sending the load overload indication information to the RNC. The load status report; otherwise, the load status report carrying the load normal indication information is sent to the RNC.

Further, the load status report sending module 52 stops receiving the load status report to the RNC after receiving the load status termination message sent by the RNC.

In summary, it can be seen from the technical solution provided by the foregoing embodiments of the present invention that the load control device is configured to detect the NodeB according to the received load status report sent by the NodeB. Load usage, and choose to reject or process the RRC connection request according to the load usage of the NodeB. Therefore, the RNC can perform different processing on the RRC connection request of each NodeB according to the specific load usage status of each NodeB, and perform differentiated flow control on each NodeB.

The load control device in the RNC can flexibly control the statistical duration and statistical interval of the load usage of the NodeB by setting the load state statistics timer and the congestion statistics interval timer, which can prevent the NodeB from frequently in a relatively short period of time. Repeatedly report the load overload indication information.

The embodiment of the present invention provides a load control device in the NodeB, and after receiving the load status request sent by the RNC, the load control device sends a load status report carrying the load information of the NodeB to the RNC, so that the RNC can be made according to the The load information of the NodeB determines the traffic control level of the NodeB.

The load control device in the NodeB may flexibly send a load status report carrying the load overload indication information or the load normal indication information to the RNC according to the power resource or the signaling resource used by the NodeB.

The specific process of applying the device in the embodiment of the present invention to perform load control is similar to the foregoing method embodiment, and details are not described herein again.

One of ordinary skill in the art can understand that all or part of the process of implementing the foregoing embodiments can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, or a read-only storage memory (Read-Only) Memory, ROM) or Random Access Memory (RAM).

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

A load control method in a wireless communication network, comprising:

Receiving, by the radio network controller, the radio resource control RRC connection request sent by the base station, where the RNC acquires a flow control level of the base station;

The RNC selects to reject or process the RRC connection request according to the traffic control level of the base station.
The load control method in the wireless communication network according to claim 1, wherein the acquiring, by the RNC, the flow control level of the base station comprises:

The RNC receives a load status report sent by the base station, where the load status report carries load information of the base station, and the RNC determines a flow control level of the base station according to load information of the base station.
The load control method in the wireless communication network according to claim 2, wherein the load information of the base station includes load overload indication information or load normal indication information, and the RNC determines the according to load information of the base station. The flow control level of the base station includes:

The RNC determines a flow control level of the base station according to the load overload indication information and the load normal indication information acquired in the set time period.
The load control method in a wireless communication network according to claim 3, wherein the RNC determines the number of the load overload indication information and the load normal indication information received within a set period of time. The flow control level of the base station, including:

The RNC starts timing of a load status statistics timer;

The RNC increases the value of the saved flow control level of the base station by a set value when the RNC receives the load overload indication information within the time duration of the load status statistics timer; when the RNC receives the value When the normal indication information is loaded, the value of the stored flow control level of the base station is decreased by a set value.
The load control method in a wireless communication network according to claim 2, wherein the method further comprises:

The RNC starts the timing of the congestion statistics interval timer, and the timing of the congestion statistics interval timer is smaller than the timing of the load state statistics timer;

The RNC does not process the received load status report sent by the base station before the end of the counting of the negative congestion statistics interval timer, and after receiving the timing of the congestion statistics interval timer, the received The load status report sent by the base station is processed.
The load control method in the wireless communication network according to any one of claims 1 to 5, wherein the RNC selects to reject or process the RRC connection request according to the traffic control level of the base station, and includes:

The RNC compares the flow control level of the base station with a threshold value, and selects to reject or process the RRC connection request according to the comparison result.
The load control method in a wireless communication network according to claim 6, wherein the RNC compares a flow control level of the base station with a threshold value, and selects to reject or process the RRC connection request according to the comparison result. ,include:

The RNC converts a traffic control level of the base station into a flow control probability factor, the flow control probability factor is proportional to the flow control level, and the flow control probability factor is an integer;

The RNC generates a random number, and the random number is an integer. When the flow control probability factor is greater than the random number, the RRC connection request is rejected, otherwise, the RRC connection request is processed.
A load control method in a wireless communication network, comprising:

Receiving, by the base station, a load status request sent by the radio network controller RNC;

The base station sends a load status report to the RNC, where the load status report carries load information of the base station, so that the RNC determines a flow control level of the base station according to load information of the base station.
The load control method in a wireless communication network according to claim 8, wherein the method further comprises:

After receiving the load status request, the base station determines whether the load exceeds a preset threshold according to the set time interval, and if yes, sends a load status report carrying the load overload indication information to the RNC. Otherwise, a load status report carrying the load normal indication information is sent to the RNC.
A load control device in a wireless communication network, the device specifically includes:

a flow control level obtaining module, configured to receive a radio resource control RRC connection request sent by the base station, and acquire a flow control level of the base station;

The control processing module is configured to select to reject or process the RRC connection request according to the flow control level of the base station acquired by the flow control level acquiring module.
The load control device in the wireless communication network according to claim 10, wherein the flow control level acquisition module comprises:

a receiving module, configured to receive a load status report sent by the base station, where the load status report carries load information of the base station;

And a flow control level determining module, configured to determine a flow control level of the base station according to load information of the base station received by the receiving module.
The load control device in the wireless communication network according to claim 11, wherein the flow control level determining module is further configured to:

Start the timing of the load status statistics timer;

During the time duration of the load status statistics timer, when the load status report received by the receiving module carries the load overload indication information, the saved value of the flow control level of the base station is increased by a set value; When the load status report received by the receiving module carries the load normal indication information, the value of the stored flow control level of the base station is decreased by a set value.
The load control device in the wireless communication network according to any one of claims 10 to 12, wherein the control processing module comprises:

a comparison processing module, configured to compare a flow control level and a threshold of the base station;

And a selection processing module, configured to select to reject or process the RRC connection request according to the comparison result obtained by the comparison processing module.
A load control device in a wireless communication network according to claim 13, wherein:

The comparison processing module is further configured to convert a flow control level of the base station into a flow control probability factor, where the flow control probability factor is proportional to the flow control level, and the flow control probability factor is an integer. Generating a random number, the random number is an integer, comparing the flow control probability factor with the random number;

The selection processing module is further configured to reject the RRC connection request when the flow control probability factor is greater than the random number, and otherwise process the RRC connection request.
A load control device in a wireless communication network, the device specifically includes:

a receiving module, configured to receive a load status request sent by the radio network controller RNC;

And a sending module, configured to send a load status report to the RNC, where the load status report carries load information of the base station, so that the RNC determines a flow control level of the base station according to load information of the base station.
The load control device of the wireless communication network according to claim 15, wherein the transmitting module is further configured to determine whether the load of the base station exceeds a preset threshold according to the set time interval. If yes, the load status report carrying the load overload indication information is sent to the RNC; otherwise, the load status report carrying the load normal indication information is sent to the RNC.