CN101557605A - Method for realizing admission control and device thereof - Google Patents
Method for realizing admission control and device thereof Download PDFInfo
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Abstract
The invention provides a method for realizing admission control. The method comprises the following steps: eNode B determines an admission control decision algorithm corresponding to a service required to be established in a terminal and measured values required by the admission control decision algorithm according to Qos and resource application type; and B. the eNode B decides whether to admit resource application of the service according to the admission control decision algorithm after obtaining measured value data corresponding to the measure values by inquiry. The invention also provides a device for realizing admission control. The method and the device can help more accurately perform admission decision and improve system resource utilization rate.
Description
Technical Field
The present invention relates to admission control technologies, and in particular, to a method and an apparatus for implementing admission control.
Background
With the development of mobile communication technology, in order to improve the peak traffic rate and the system capacity, a High Speed Packet Access (HSPA) technology is introduced into the existing 3G mobile communication system.
In the HSPA system, the resource sharing characteristic makes the Radio Network Controller (RNC) not need to consider the code channel factor when accepting the terminal, therefore, the current acceptance control algorithm is mainly based on the fixed terminal number. The admission control method in the prior art comprises the following processes: firstly, configuring an admission terminal number threshold for an RNC according to the resource number, control channel overhead and the like, wherein the terminal number threshold is collectively called as a maximum terminal number hereinafter; then, when the terminal accesses, the RNC judges whether the number of the access terminals is less than the configured maximum number of the terminals, if so, the terminal is admitted to access the shared channel cell, otherwise, the terminal is refused to access the shared channel cell.
The admission control scheme described above is relatively simple and easy to implement, but has some problems, mainly two aspects:
on one hand, the maximum terminal number is unreasonable in value, so that the admission judgment result is inaccurate, and the system performance is influenced. Under the conditions of different channels and different resource numbers, the value of the maximum terminal number may be different, so that if the value of the maximum terminal number is not proper, the system performance is influenced. Specifically, if the maximum terminal number is large, the number of access terminals is large, and the data rate of the edge terminal may not be guaranteed or the data rate of the high-priority terminal may be affected; and if the maximum terminal number is too small, the resource utilization rate is low, and the scheduling gain is low.
On the other hand, an admission control strategy based on the number of fixed terminals is only from the viewpoint of cell capacity, and whether the access of a new terminal can damage the service quality of a terminal connected in a cell is not considered, although cell resources are shared by multiple terminals, the resources are limited after all, under the condition of a certain scheduling algorithm, the probability that each terminal in the cell obtains service is smaller as the number of terminals sharing the resources is larger, and particularly when the scheduling priorities of the terminals are not greatly different, the probability that the terminal obtains service is rapidly reduced along with the increase of the number of the terminals, so that the service quality of the terminal can not be effectively guaranteed.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a method and an apparatus for implementing admission control, which can make admission decisions more accurately and improve the utilization rate of system resources.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a method for realizing admission control, which comprises the following steps:
A. a base station node determines an admission control judgment algorithm corresponding to a service required to be established by a terminal and a measurement quantity required by the admission control judgment algorithm according to the quality of service (Qos) and the resource application type of the terminal;
B. and after the base station node queries the measurement data corresponding to the measurement, the measurement data is used for judging whether to admit the resource application of the service according to the admission control judgment algorithm.
Wherein, step B further includes:
when the base station node judges that the resource application is accepted, the base station node allocates resources for the service, and allocates a physical layer, an access control MAC layer and a radio link control RLC layer by using the allocated resources, and sends a resource allocation result to a corresponding terminal;
and when the judgment is that the resource application is refused, directly returning an admission judgment result to the terminal.
Step A further comprises:
a0, after the base station node successfully establishes and activates the cell, the base station node configures the measurement quantity, the measurement reporting mode and the reporting frequency which need to be carried out the public measurement, then continuously carries out the public measurement according to the configuration, carries out the smoothing processing on the measurement result, and then stores the obtained measurement quantity data according to the measurement reporting mode and the reporting frequency.
Further included between step a0 and step a is:
a01, when the user connects with the base station node, the base station node configures the special measurement quantity, measurement report mode, report frequency, etc. according to the needed admission control decision algorithm, then measures the measurement quantity, and stores the measurement quantity data according to the measurement report mode and report frequency after smoothing the measurement result.
The service is as follows: initial access, or radio access bearer RAB establishment, or rate adjustment for existing services, or handover access.
The admission control decision algorithm is as follows: and an admission control method based on the current cell physical resource occupation condition.
The measurement reporting mode is as follows: periodic reporting, or periodic event triggering.
The base station node is as follows: evolved base station eNode B.
The invention also provides a device for realizing admission control, which comprises: a data management module, a data receiving module, and an admission control module, wherein,
the data management module is used for storing the measurement data according to the measurement reporting mode and the reporting frequency and returning the corresponding measurement data when the admission control module inquires;
the data receiving module is used for receiving a service resource allocation request message sent by a terminal and sending the request message to the admission control module;
and the admission control module is used for determining an admission control judgment algorithm required to be used according to the Qos and the resource application type in the request message after receiving the request message, determining a corresponding measurement quantity used by the admission control judgment algorithm, inquiring measurement quantity data of the measurement quantity from the data management module, and then performing admission judgment according to the data by using the corresponding admission control judgment algorithm.
Wherein the admission control module is further to: according to the admission judgment result, correspondingly sending a resource allocation signal to a resource allocation module or sending a service request failure message to a data sending module;
correspondingly, the device further comprises:
the resource allocation module is used for allocating resources for the terminal after receiving the resource allocation signal, configuring a physical layer, an MAC layer and an RLC layer by using the allocated resources and generating a service request success message to the data sending module;
and the data sending module is used for sending the service request success message or the service request failure message to a corresponding terminal.
The admission control module is further to: sending the admission judgment result to a resource allocation module;
correspondingly, the device further comprises:
and the resource allocation module is used for correspondingly generating a service request failure message and sending the service request failure message to the data sending module according to the received admission judgment result, or allocating resources for the terminal, configuring a physical layer, an MAC layer and an RLC layer by using the allocated resources, generating a service request success message and sending the service request success message to the data sending module.
The apparatus further comprises:
and the measurement control module is used for configuring the measurement quantity, the measurement reporting mode and the reporting frequency of the measurement to be measured, continuously measuring according to the configuration and sending the obtained measurement quantity data to the data management module.
The base station node continuously performs public measurement, and continuously performs special measurement after the terminal is connected with the base station node, and when the terminal performs service establishment, the terminal admission judgment is performed according to corresponding measurement data and an admission control judgment algorithm, so that the base station node can perform admission judgment according to the current system load condition, the channel quality of the admitted terminal, the actual speed of the admitted service and other real-time information, and thus, the admission judgment is more accurate, the service quality of the accessed terminal can be ensured, and the utilization rate of system resources is improved.
Drawings
FIG. 1 is a flow chart illustrating a method for implementing admission control according to the present invention;
fig. 2 is a schematic structural diagram of an apparatus for implementing admission control according to the present invention.
Detailed Description
The basic idea of the invention is: and carrying out public measurement and special measurement in real time, and carrying out terminal admission judgment according to the corresponding measurement quantity and an admission control judgment algorithm when the terminal carries out service establishment.
The present invention is applicable to all communication systems based on shared resources, and the implementation of the method and apparatus for implementing admission control in the present invention is described in detail below with reference to the accompanying drawings by taking a 3GPP Long Term Evolution (LTE) system based on multi-user shared resources as an example. At this time, the base station node is an evolved base station eNode B.
In addition, the measurement quantity in the present invention refers to a mark indicating the measurement quantity, and may be a specific name of the measurement quantity, etc.; and the measured quantity data is a specific numerical value of each measured quantity obtained by measurement.
Fig. 1 is a schematic flow chart of a method for implementing admission control according to the present invention, as shown in fig. 1, the method includes:
step 101: after the eNode B successfully establishes and activates the cell, configuring the measurement quantity, the measurement reporting mode, the reporting frequency and the like which need to carry out public measurement; and then, continuously carrying out public measurement according to the configuration, carrying out smoothing treatment on the obtained measurement result, and storing the obtained measurement data according to the configured measurement reporting mode and reporting frequency.
The measurement reporting mode may be configured as periodic reporting or periodic event triggering. The measurement quantity includes: current system load conditions, resource occupancy rates, etc.
In this step, the configuration is usually automatically completed by the base station node such as the eNode B, and is generally started after the cell is successfully activated. How to configure the common measurement quantity and how to smooth the measurement result belong to the known technology, and are not described herein again.
Step 102: after the user is connected with the eNode B, the eNode B correspondingly configures the measurement quantity, the measurement reporting mode, the reporting frequency and the like of the special measurement according to the admission control judgment algorithm required to be used; and then, measuring the measurement quantity, and storing the obtained measurement quantity data according to the configured measurement reporting mode and reporting frequency after smoothing the measurement result.
The measurement amount in this step includes: the channel quality of the terminal, the actual rate of the admitted service of the terminal, the retransmission times of the service data, and the like. The measurement quantity of the dedicated measurement in this step is generally a measurement quantity for each terminal accessing the base station node.
Wherein, the admission control decision algorithm may be: and an admission control method based on the current cell physical resource occupation situation. The admission control decision algorithms used in different service applications are generally different, and similarly, the measurement quantities required to be used by different admission control decision algorithms may also be different.
In the implementation of the admission control method of the present invention, admission control decision algorithms that need to be used when various different services are established are set in base station nodes such as eNode B, and measurement quantities that need to be used by each admission control decision algorithm.
The configuration in this step is generally automatically completed by the base station node such as the eNode B, and may be started when the terminal successfully accesses the base station node such as the eNode B. It is well known how to perform configuration of dedicated measurement quantities and how to perform smoothing processing of the measurement results, and details thereof are not described herein.
Step 101 is a step that needs to be executed when the base station is established, but after the configuration is completed, the measurement will continue to be performed. Step 102 is a step to be executed after the terminal accesses the eNode B, and similarly, after configuration is completed, measurement is continuously performed; in step 102, the measurement quantity to be measured is generally the measurement quantity that may be used by all admission control decision algorithms related to the terminal, so that the terminal can obtain the required measurement quantity data immediately after accessing and applying for different services.
Step 103: and when the terminal needs to establish the service, the terminal sends a service resource allocation request message to the eNodeB.
The service may be: initial access, Radio Access Bearer (RAB) establishment, rate adjustment for existing services, handover access, and the like.
There is no fixed execution sequence between step 102 and step 103, as long as it can be ensured that the terminal can obtain the corresponding measurement data in real time when establishing the corresponding service.
Step 104: after receiving the request message, the eNode B determines an admission control decision algorithm needed to be used for establishing the service according to the Qos, the resource application type and the like in the request message, and determines corresponding measurement quantity needed to be used.
Wherein the resource application type corresponds to the established specific service.
How to determine a corresponding admission control decision algorithm according to Qos, resource application type, and the like, and a measurement quantity used by the algorithm may be autonomously set in specific implementation, for example: a comparison table with the Qos, the resource application type, and the admission control decision algorithm name as fields may be established, so that the corresponding admission control decision algorithm may be found through the specific Qos and the resource application type. Furthermore, a comparison table with the name of the admission control decision algorithm and the name of the measurement quantity required by the admission control decision algorithm as fields can be established, and after the name of the specific admission control decision algorithm is determined, the name of the measurement quantity required to be used can be found and obtained through the name.
Step 105: the eNode B inquires the measurement data corresponding to the measurement determined in step 104, and decides whether to accept the resource application of the service according to the acceptance control decision algorithm determined in step 104, if so, step 106 is executed, otherwise, the acceptance decision result is directly returned to the terminal, and the current processing flow is ended.
Wherein, the admission decision result may be included in a service request failure message and sent to the terminal.
Step 106: the eNode B applies for the resources of the service to allocate resources, and configures a physical layer, an MAC layer and a Radio Link Control (RLC) layer with the allocated resources, sends the resource allocation result to the corresponding terminal, and the current processing flow is finished.
Wherein, the resource allocation result may be included in a service request success message and sent to the terminal.
Fig. 2 is a schematic structural diagram of an apparatus for implementing admission control according to the present invention, which can be applied to a base station device used in a system based on shared resources, for example: eNode B in LTE systems. As shown in fig. 2, the apparatus includes a measurement control module 210, a data management module 220, a data receiving module 230, an admission control module 240, a resource allocation module 250, and a data transmitting module 260; wherein,
the measurement control module 210 is configured to configure a measurement quantity to be measured, a measurement reporting manner, a reporting frequency, and the like, and further configured to perform measurement continuously according to the configuration, perform smoothing processing on an obtained measurement result, and send obtained final measurement quantity data to the data management module 220.
The data management module 220 is configured to store the received measurement data according to a measurement reporting mode and a reporting frequency, and return the corresponding measurement data when the admission control module 230 queries.
The specific implementation of the data management module 220 can adopt different implementations, such as a way of using a separate database system or using a resource table, and the like, and can also be used in combination in multiple ways.
A data receiving module 230, configured to receive a service resource allocation request message sent by a terminal, and send the request message to an admission control module 240.
And an admission control module 240, configured to, after receiving the request message, determine, according to the Qos and the resource application type in the request message, an admission control decision algorithm that needs to be used for establishing the service, determine a corresponding measurement quantity that needs to be used by the admission control decision algorithm, query, to the data management module 220, measurement quantity data corresponding to the measurement quantity, and perform admission decision using the corresponding admission control decision algorithm according to the data after the data management module 220 returns the corresponding measurement quantity data, if the decision is yes, send a resource allocation signal to the resource allocation module 250, and if the decision is no, send a service request failure message to the data sending module 260.
The resource allocation module 250 is configured to allocate resources to the terminal after receiving the resource allocation signal, configure the physical layer, the MAC layer, and the RLC layer using the allocated resources, and generate a service request success message to the data sending module 260.
The service request failure message may also be generated by the resource allocation module 250, at this time, the admission control module 240 directly sends the admission decision result to the resource allocation module 250, after the resource allocation module 250 receives the admission decision result, if the admission decision is yes, the resource allocation module allocates the resource to the terminal, and configures the physical layer, the MAC layer, and the RLC layer with the allocated resource, generates a service request success message, and sends the service request success message to the data sending module 260; if the admission decision is no, a service request failure message is generated and sent to the data sending module 260.
The data sending module 260 is configured to send the received service request success message or service request failure message to a corresponding terminal.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (12)
1. A method for implementing admission control, the method comprising the steps of:
A. a base station node determines an admission control judgment algorithm corresponding to a service required to be established by a terminal and a measurement quantity required by the admission control judgment algorithm according to the quality of service (Qos) and the resource application type of the terminal;
B. and after the base station node queries the measurement data corresponding to the measurement, the measurement data is used for judging whether to admit the resource application of the service according to the admission control judgment algorithm.
2. The method of claim 1, wherein step B further comprises:
when the base station node judges that the resource application is accepted, the base station node allocates resources for the service, and allocates a physical layer, an access control MAC layer and a radio link control RLC layer by using the allocated resources, and sends a resource allocation result to a corresponding terminal;
and when the judgment is that the resource application is refused, directly returning an admission judgment result to the terminal.
3. The method of claim 1 or 2, wherein step a is preceded by the further step of:
a0, after the base station node successfully establishes and activates the cell, the base station node configures the measurement quantity, the measurement reporting mode and the reporting frequency which need to be carried out the public measurement, then continuously carries out the public measurement according to the configuration, carries out the smoothing processing on the measurement result, and then stores the obtained measurement quantity data according to the measurement reporting mode and the reporting frequency.
4. The method of claim 3, further comprising between step A0 and step A:
a01, when the user connects with the base station node, the base station node configures the special measurement quantity, measurement report mode, report frequency, etc. according to the needed admission control decision algorithm, then measures the measurement quantity, and stores the measurement quantity data according to the measurement report mode and report frequency after smoothing the measurement result.
5. The method according to claim 1 or 2, wherein the service is: initial access, or radio access bearer RAB establishment, or rate adjustment for existing services, or handover access.
6. The method of claim 1 or 2, wherein the admission control decision algorithm is: and an admission control method based on the current cell physical resource occupation condition.
7. The method of claim 4, wherein the measurement reporting mode is as follows: periodic reporting, or periodic event triggering.
8. The method according to claim 1 or 2, wherein the base station node is: evolved base station eNode B.
9. An apparatus for implementing admission control, the apparatus comprising: a data management module, a data receiving module, and an admission control module, wherein,
the data management module is used for storing the measurement data according to the measurement reporting mode and the reporting frequency and returning the corresponding measurement data when the admission control module inquires;
the data receiving module is used for receiving a service resource allocation request message sent by a terminal and sending the request message to the admission control module;
and the admission control module is used for determining an admission control judgment algorithm required to be used according to the Qos and the resource application type in the request message after receiving the request message, determining a corresponding measurement quantity used by the admission control judgment algorithm, inquiring measurement quantity data of the measurement quantity from the data management module, and then performing admission judgment according to the data by using the corresponding admission control judgment algorithm.
10. The apparatus of claim 9, wherein the admission control module is further configured to: according to the admission judgment result, correspondingly sending a resource allocation signal to a resource allocation module or sending a service request failure message to a data sending module;
correspondingly, the device further comprises:
the resource allocation module is used for allocating resources for the terminal after receiving the resource allocation signal, configuring a physical layer, an MAC layer and an RLC layer by using the allocated resources and generating a service request success message to the data sending module;
and the data sending module is used for sending the service request success message or the service request failure message to a corresponding terminal.
11. The apparatus of claim 9, wherein the admission control module is further configured to: sending the admission judgment result to a resource allocation module;
correspondingly, the device further comprises:
and the resource allocation module is used for correspondingly generating a service request failure message and sending the service request failure message to the data sending module according to the received admission judgment result, or allocating resources for the terminal, configuring a physical layer, an MAC layer and an RLC layer by using the allocated resources, generating a service request success message and sending the service request success message to the data sending module.
12. The apparatus of any one of claims 9 to 11, further comprising:
and the measurement control module is used for configuring the measurement quantity, the measurement reporting mode and the reporting frequency of the measurement to be measured, continuously measuring according to the configuration and sending the obtained measurement quantity data to the data management module.
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| CNA2008101039003A CN101557605A (en) | 2008-04-11 | 2008-04-11 | Method for realizing admission control and device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112333826A (en) * | 2020-11-05 | 2021-02-05 | 中国联合网络通信集团有限公司 | Service admission method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112333826A (en) * | 2020-11-05 | 2021-02-05 | 中国联合网络通信集团有限公司 | Service admission method and device |
| CN112333826B (en) * | 2020-11-05 | 2023-08-11 | 中国联合网络通信集团有限公司 | Service admission method and device |
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