CN1852586A - Method and system for delivering service quality parameters - Google Patents

Abstract

The invention discloses a method for transmitting quality of service parameters, which is applied in a handover process. When a source BSS receives a handover request from a target BSS, the method includes: the source BSS sends the quality of service parameters of the source network to the target BSS ; The target BSS generates the QoS parameters of the target network according to the QoS parameters from the source BSS; the target BSS sends the generated QoS parameters to the mobile station. The invention also discloses a system for transmitting service quality parameters. According to the present invention, by transmitting the QoS parameters in the handover process, each network element can know the QoS parameters in time, which provides a basis for ensuring end-to-end QoS of services.

Description

A method and system for delivering quality of service parameters

technical field

The present invention relates to a communication technology, in particular to a method and system for transmitting QoS (Quality of Service) parameters.

Background technique

With the development of the Internet (Internet) and wireless services, users have higher and higher requirements for wireless data services, hoping that the wireless data services can provide high-quality services while providing rich services. Currently, in wireless data services, rich services can be provided to users through real-time multimedia services.

The real commercial use of real-time multimedia services depends on the system's support for end-to-end QoS parameters. The QoS parameter is a set, including service flow identifier, flow direction, flow state, etc. In the definition of 3GPP2 in the prior art, the QoS parameter also includes QoS parameter _ATTRIBUTE_SET (quality of service attribute parameter set). The QoS parameter _ATTRIBUTE_SET includes service type, peak rate, token bucket size, token generation rate, maximum delay, maximum loss rate, and whether delay jitter is sensitive or not.

In the existing technology, for example, the HRPD Rev.A system can support rich delay-sensitive services through technologies such as forward and reverse throughput enhancement of the air interface, and forward support for multi-user packets, so as to provide QoS parameter guarantees. In order to ensure the QoS parameters, in the wireless access network interoperability protocol matched with the air interface technology, there is also a need to cooperate with the QoS parameter-related signaling process.

However, in the prior art, such as 3GPP2 A.S0008 Rev0 only discloses the inter-BSS (Base Station Subsystem) handover in the dormant state, but in the handover process, the transfer of QoS parameters is not considered, therefore, in this case cannot Guarantee the QoS of the service after switching. In addition, the 3GPP2 standard organization is currently discussing the inter-BSS handover in the active state, that is, the inter-BSS hard handover, but it does not consider the QoS parameter transfer mechanism. Therefore, in this case, the QoS of the service after the handover cannot be guaranteed.

Contents of the invention

The object of the present invention is to provide a method and system for transferring QoS parameters, which are applied in the handover process, and QoS parameters are transferred between the source network and the target network, thereby ensuring the QoS parameters of the service in the case of handover.

The present invention discloses a method for transferring service quality parameters, which is applied in a handover process. When a source network receives a handover request from a target network, the method includes:

A. The source base station subsystem sends the quality of service parameters of the source network to the target base station subsystem;

B. The target base station subsystem generates the service quality parameters of the target network according to the service quality parameters from the source base station subsystem;

C. The target base station subsystem sends the generated QoS parameters to the mobile station.

The quality of service parameters include subscription quality of service parameters, authorization quality of service parameters, guaranteed quality of service parameters and/or request quality of service parameters.

Before performing step A, it is also performed that: the policy decision function entity sends the quality of service attribute of the service flow to the base station subsystem of the source network.

The step A further includes: the source base station subsystem sends the source network quality of service parameters and service flow quality of service attributes to the target base station subsystem.

The step B further includes: the target base station subsystem authorizes the guaranteed QoS parameters of the target network according to the service flow quality of service attributes.

The step C specifically includes: the target base station subsystem sends the generated QoS parameters to the mobile station.

The step C further includes: the target base station subsystem sends the generated QoS parameters to the packet data serving node.

The present invention also discloses a system for transmitting quality of service parameters. The system includes: a source base station subsystem, a packet data service node, a policy decision-making functional entity, and a target base station subsystem.

The source base station subsystem is used to generate the guaranteed quality of service parameters and send the guaranteed quality of service parameters to the packet data service node; the source base station subsystem is also used to receive the authorized service quality parameters and business services issued by the packet data service node Flow quality of service attribute; and send the subscription quality of service attribute parameter, service flow quality of service attribute, authorization service quality parameter, guaranteed service quality parameter and request service quality parameter to the target base station subsystem;

The packet data service node is used to send the guaranteed quality of service parameters to the base station subsystem, perform contract authorization on the guaranteed quality of service parameters, generate authorized service quality parameters, and send the authorized service quality parameters to the base station subsystem;

The policy decision-making functional entity is used to perform business authorization on the guaranteed quality of service parameters, and send the guaranteed service quality parameters of the business authorization to the packet data service node;

The target base station subsystem is used to receive the subscription quality of service attribute parameters, service flow quality of service attributes, authorized service quality parameters, guaranteed service quality parameters and request service quality parameters of the source base station subsystem, generate guaranteed service quality parameters, and guarantee service The quality parameters are sent to the packet data serving node and the mobile station.

The invention also discloses a base station subsystem, including:

a processing unit, configured to generate guaranteed quality of service parameters;

The receiving unit is used to receive the subscription quality of service parameters, authorized service quality parameters and service flow quality of service attributes issued by the packet data service node, and receive the request service quality parameters of the mobile station;

The sending unit is used to send the guaranteed quality of service parameters generated by the processing unit to the packet data serving node and the mobile station; The QoS parameters, guaranteed QoS parameters and requested QoS parameters are sent to the target base station subsystem.

The processing unit includes:

A generating unit, configured to generate a guaranteed quality of service parameter according to the quality of service parameter of the subscription, the quality of service parameter of the authorization service, and the quality of service parameter of the request service;

The comparison unit is used to compare the guaranteed quality of service parameters of the target network with the guaranteed quality of service parameters of the source network, and if the comparison results are inconsistent, send the guaranteed quality of service parameters of the target network to the mobile station and the packet data service node;

The authorization unit is configured to authorize the guaranteed quality of service parameters according to the service flow quality of service attributes.

According to the present invention, by transmitting the QoS parameters in the handover process, each network element can know the QoS parameters in time, which provides a basis for ensuring end-to-end QoS of services.

Description of drawings

Fig. 1 has shown the flow chart of transmitting QoS parameter of the present invention;

Fig. 2 shows the system for delivering QoS parameters of the present invention.

Detailed ways

In order to make it easier for those skilled in the art to understand and realize the present invention, the embodiments of the present invention are described in conjunction with the accompanying drawings.

As shown in Fig. 1, the method for transferring QoS parameters during the handover process is described below.

Step a, when mobile station is in standby state, PDSN (packet data serving node) sends the user's subscription quality of service attribute (subscriber QoS profile) parameter to source BSS ( base station subsystem).

Step b. When the mobile station initiates a service request, it will use the air interface to send the requested quality of service (Requested_QoS) parameter to its corresponding BSS through a ReservationKKQoSRequest (KKth reserved QoS parameter request) message.

Step c, BSS determines the QoS parameters that the current network can guarantee according to the Requested_QoS parameters and Subscriber QoSProfile parameters and the current network conditions that are saved after receiving: Parameter Response) message will send the guaranteed QoS parameters to the mobile station, so that the mobile station can communicate according to the Granted_QoS parameter.

The BSS determines the Granted_QoS parameter method as follows: the intersection of the Requested_QoS parameter, the Subscriber QoS Profile parameter and the resources allowed by the current network can be taken.

Step d, BSS sends the Granted_QoS parameter to PDSN through A11-Registration Request (A11-Registration Request), so that PDSN can perform charging.

Step e, PDSN sends the Granted_QoS parameter to PDF, and PDF authorizes the Granted_QoS parameter according to its saved service flow attribute, and then sends the authorized Granted_QoS parameter and service flow service quality attribute to PDSN. The contract status in the parameter is authorized, and finally the Auth_QoS (Authorized Quality of Service) parameter is obtained. The service flow quality of service attribute includes the bandwidth required to run the service flow.

PDF authorizes the Granted_QoS parameter as follows: When the parameter in the Granted_QoS parameter exceeds the quality of service attribute of the service flow, the parameter needs to be cut to form the Auth_QoS parameter; when the parameter in the Granted_QoS parameter does not exceed the attribute of the service , you do not need to modify this parameter, and pass the authorization directly to form the Auth_QoS parameter.

The PDSN authorizes the subscription status in the Granted_QoS parameter according to the user subscription status. After the authorization is passed, the subsequent processing procedure is performed, otherwise, the default procedure is used for processing.

In step f, the PDSN sends the Auth_QoS parameters and service flow quality of service attributes to the source BSS through the A11-Session Update message, so that the BSS can communicate according to the Auth_QoS parameters.

Step g, when the source BSS receives the Auth_QoS parameter and the service flow quality of service attribute, save the Auth_QoS parameter and the service flow quality of service attribute, and compare the Auth_QoS parameter with the Granted_QoS parameter, if it is found that the Granted_QoS parameter exceeds the allowable range of the Auth_QoS parameter, then Reduce the Granted_QoS parameter to meet the limit of the Auth_QoS parameter, and send the latest Granted_QoS parameter to the mobile station through the ReservationKKQoS Response message, so that the mobile station can communicate according to the Granted_QoS parameter.

According to the present invention, when the network resources are loose, the BSS can also re-determine the Granted_QoS parameter of the current network according to the Requested_QoS parameter requested by the user, the Subscriber QoS Profile parameter and the current network situation according to a predetermined period, and then compare the quality of service attribute of the business flow with the Granted_QoS parameter For comparison, if it is found that the Granted_QoS parameter exceeds the allowable range of the service flow quality of service attribute, then reduce the Granted_QoS parameter to meet the restriction of the service flow quality of service attribute, and send the latest Granted_QoS parameter to the mobile station through ReservationKKQoS Response, so that the mobile station according to Granted_QoS parameters to communicate. In this way, the BSS can adjust the Granted_QoS parameter by itself, so as to use a larger Granted_QoS parameter for communication, and improve the communication quality.

Step h, when handover occurs, after the source BSS receives the handover request sent by the target BSS, the source BSS sends the subscriber QoS parameter, service flow quality of service attribute, and The Auth_QoS parameter, Granted_QoS parameter and Requested_QoS parameter of the service flow are sent to the target BSS. The target BSS determines the Granted_QoS parameters of each activated service flow in the target network according to the subscriberQoS parameter, Auth_QoS parameter, Requested_QoS parameter and the current air interface resource situation.

Then the target BSS compares the quality of service attribute of the traffic flow with the Granted_QoS parameter, and if it is found that the Granted_QoS parameter exceeds the allowable range of the quality of service attribute of the traffic flow, then reduce the Granted_QoS parameter to meet the restriction of the quality of service attribute of the traffic flow, so that the target network can be avoided The Granted_QoS parameters are resent to the PDSN and PDF for the authorization process, thereby improving the efficiency of the network.

Step i, the BSS of the target network compares the Granted_QoS parameter of the target network with the Granted_QoS parameter of the source network, and if the Granted_QoS parameter of the target network is inconsistent with the Granted_QoS parameter of the source network, then updates the Granted_QoS parameter of the air interface. And the Granted_QoS parameter of the target network is sent to the mobile station through Reservation KK QoS Response, so that the mobile station can communicate according to the Granted_QoS parameter.

Step j. When the target BSS finds that the Granted_QoS parameter of the current network is inconsistent with the original Granted_QoS parameter, the target BSS sends the Granted_QoS parameter to the PDSN through the A11-Registration Request, so that the PDSN can perform charging.

The present invention also provides a system for transmitting QoS parameters, which is applied in the handover process, and the system includes a mobile station, a source BSS, a PDSN, a PDF, and a target BSS. The system of the present invention is described below.

The mobile station is used to send the Requested_QoS parameter to the source BSS, receive the Granted_QoS parameter from the BSS, and then communicate according to the Granted_QoS parameter.

The source BSS is used to determine the guaranteed QoS parameter: Granted_QoS parameter according to the Requested_QoS parameter requested by the user, the subscriber QoS Profile parameter and the current network situation, and send the Granted_QoS parameter to the mobile station and the PDSN. The source BSS is used to receive the Auth_QoS parameter and service flow quality of service attribute issued by the packet data serving node. The source BSS is also used to send the Subscriber QoS Profile parameter, the service flow quality of service attribute, the Auth_QoS parameter, the Granted_QoS parameter and the Requested_QoS parameter of the service flow to the target BSS, so that the target BSS is based on the Subscriber QoS Profile parameter, service The Auth_QoS parameter, Requested_QoS parameter of the flow and the current air interface resource situation generate the Granted_QoS parameter of the target network.

PDSN, which is used to authorize the subscription status in the Granted_QoS parameter, and send the Granted_QoS parameter to the PDF, so that the PDF can authorize the Granted_QoS parameter according to the service flow quality attribute, and finally generate the Auth_QoS parameter, and send the Auth_QoS parameter to the BSS .

PDF (Policy Decision Functional Entity), which is used to authorize the service in the Granted_QoS parameter according to the quality of service attribute of the service flow, and send the authorized Granted_QoS parameter to the PDSN.

The target BSS is used to receive the Subscriber QoS Profile parameter, service flow quality of service attribute, service flow Auth_QoS parameter, Granted_QoS parameter and Requested_QoS parameter sent by the source BSS. The target BSS is also used to generate the Granted_QoS parameter of the target network according to the Subscriber QoS Profile parameter from the source BSS, the Requested_QoS parameter of the service flow and the current air interface resource situation, and perform business authorization on the Granted_QoS parameter according to the quality of service attribute of the service flow. If the target BSS finds that the Granted_QoS parameter of the current network is inconsistent with the original Granted_QoS parameter, it will send the Granted_QoS parameter to the mobile station, so that the mobile station can communicate according to the Granted_QoS parameter, and send the Granted_QoS parameter to the PDSN through A11-Registration Request (A11-registration request) , so that the PDSN performs charging.

The present invention also provides a BSS, the BSS includes: a processing unit, used to generate the Granted_QoS parameter; a receiving unit, used to receive the Auth_QoS parameter issued by the packet data service node; a sending unit, used to generate the Granted_QoS parameter The Granted_QoS parameter is sent to the PDSN; during the handover process, the sending unit is used to send the Subscriber QoS Profile parameter, Auth_QoS parameter, Granted_QoS parameter and Requested_QoS parameter to the target BSS.

The processing unit includes a generation unit, a comparison unit and an authorization unit, and the generation unit is used to generate the Granted_QoS parameter according to the Subscriber QoS Profile parameter, the Auth_QoS parameter, the Requested_QoS parameter and the current air interface resource situation of the traffic flow, and the comparison unit uses To compare the Granted_QoS parameter of the target network with the Granted_QoS parameter of the source network, if the comparison result is inconsistent, then send the Granted_QoS parameter of the target network to the mobile station, so that the mobile station can communicate according to the Granted_QoS parameter, and send the Granted_QoS parameter to the PDSN, In order to charge the PDSN, the authorization unit is used to authorize the Granted_QoS parameter according to the service flow quality of service attribute, if the Granted_QoS parameter is greater than the service flow quality of service attribute, cut the Granted_QoS parameter to adapt to the service flow quality of service attribute, otherwise, no Change the Granted_QoS parameter.

According to the present invention, by transmitting the QoS parameters in the handover process, each network element can know the QoS parameters in time, which provides a basis for ensuring end-to-end QoS of services.

According to the present invention, the source BSS directly sends the Subscriber QoS attribute parameters, Requested_QoS parameters, and Auth_QoS parameters to the target BSS, so that the target BSS does not need to notify the PDSN to re-issue the Subscriber QoS Profile parameters and Auth_QoS parameters. Send the Requested_QoS parameter. Therefore, the target BSS can generate Granted_QoS parameters according to the Subscriber QoS attribute parameters, Requested_QoS parameters, and Auth_QoS parameters, so that the target BSS can allocate resources according to the generated Granted_QoS parameters, establish air interface links and R-P connections, etc., and ensure the communication quality during handover .

Although the present invention has been described by the embodiments, those of ordinary skill in the art know that, without departing from the spirit and essence of the present invention, the present invention can have many modifications and variations, and the scope of the present invention is defined by the appended rights Requirements to limit.

Claims (10)

1, a kind of method of delivering service quality parameters is applied to it is characterized in that in the switching flow, and when source network was received the handoff request of objective network, described method comprised:

A, source base station subsystem are issued subsystem of objective base station with the QoS parameter of source network;

B, subsystem of objective base station are according to the QoS parameter that generates objective network from the QoS parameter of source base station subsystem;

C, subsystem of objective base station are issued travelling carriage with the QoS parameter that generates.

2, the method for delivering service quality parameters according to claim 1 is characterized in that, described QoS parameter comprises subscription service mass parameter, authorization service mass parameter, the parameter that guarantees service quality and/or request QoS parameter.

3, the method for delivering service quality parameters according to claim 1 is characterized in that, also carried out before execution in step A: policy deciding functional entity is handed down to the traffic stream service qualitative attribute base station sub-system of source network.

4, the method for delivering service quality parameters according to claim 3 is characterized in that, described steps A also comprises: source base station subsystem is issued subsystem of objective base station with the QoS parameter and the traffic stream service qualitative attribute of source network.

5, the method for delivering service quality parameters according to claim 3 is characterized in that, described step B also comprises: subsystem of objective base station is authorized the parameter that guarantees service quality of objective network according to the traffic stream service qualitative attribute.

6, according to claim 1 to 5 method of arbitrary described delivering service quality parameters wherein, it is characterized in that described step C specifically comprises: the parameter that guarantees service quality that subsystem of objective base station will generate is issued travelling carriage.

7, according to claim 1 to 5 method of arbitrary described delivering service quality parameters wherein, it is characterized in that described step C also comprises: the parameter that guarantees service quality that subsystem of objective base station will generate is issued packet data serving node.

8, a kind of system of delivering service quality parameters is characterized in that, described system comprises: source base station subsystem, packet data serving node, policy deciding functional entity and subsystem of objective base station,

Source base station subsystem be used for generating the parameter that guarantees service quality, and the parameter that will guarantee service quality is issued packet data serving node; Described source base station subsystem also is used for authorization service mass parameter and the traffic stream service qualitative attribute that the receiving block data service node issues; And subscription service qualitative attribute parameter, traffic stream service qualitative attribute, authorization service mass parameter, the parameter that guarantees service quality and request QoS parameter sent to subsystem of objective base station;

Packet data serving node is used for the parameter that guarantees service quality is issued base station sub-system, and the parameter that guarantees service quality is carried out approval authority of contract signature, generates the authorization service mass parameter, and the authorization service mass parameter is issued base station sub-system;

Policy deciding functional entity is used for the parameter that guarantees service quality is carried out service authorization, and the parameter that guarantees service quality of service authorization is issued packet data serving node;

Subsystem of objective base station, the subscription service qualitative attribute parameter, traffic stream service qualitative attribute, authorization service mass parameter, the parameter that guarantees service quality and the request QoS parameter that are used for the reception sources base station sub-system, the generation parameter that guarantees service quality, and the parameter that will guarantee service quality is issued packet data serving node and travelling carriage.

9, a kind of base station sub-system is characterized in that, comprising:

Processing unit is used for generating the parameter that guarantees service quality;

Receiving element is used for subscription service mass parameter, authorization service mass parameter and traffic stream service qualitative attribute that the receiving block data service node issues, and the request QoS parameter of receiving mobile;

Transmitting element is used for the parameter that guarantees service quality that processing unit generates is issued packet data serving node and travelling carriage; In handoff procedure, described transmitting element is used for traffic stream service qualitative attribute, subscription service qualitative attribute parameter, authorization service mass parameter, the parameter that guarantees service quality and request QoS parameter are sent to subsystem of objective base station.

10, base station sub-system according to claim 9 is characterized in that, described processing unit comprises:

Generation unit is used for according to the subscription service mass parameter, and authorization service mass parameter, request service QoS parameter generate the parameter that guarantees service quality;

Comparing unit is used for the parameter that guarantees service quality of the guarantee service quality parameter and the source network of objective network is compared, if comparative result is inconsistent, then the parameter that guarantees service quality of objective network is issued travelling carriage and packet data serving node;

Granted unit is used for according to the traffic stream service qualitative attribute parameter that guarantees service quality being authorized.

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