CN101047623A - Method and device for responding resource preleave require or strategy decision require - Google Patents

Abstract

The present invention discloses a method and device for responding to a resource reservation request or a policy decision request. The method includes the following steps: a processing result acquisition step, obtaining a processing result for the request; a judging step, for the When the processing result of the request is negative, it is judged for each flow in the request whether the negative processing result is caused by the flow itself; in the writing step, according to the judgment result, in the response message of the request, for the The stream writes different judgment result values.

Description

Method and apparatus for responding to resource reservation requests or policy decision requests

technical field

The present invention relates to methods and apparatus for responding to resource reservation requests or policy decision requests. More particularly, it relates to methods and apparatus for responding to resource reservation requests or policy decision requests involving multiple flows.

Background technique

WiMAX (Worldwide Interoperability for Microwave Access) is a wireless metropolitan area network technology based on the IEEE802.16 standard. It is a network based entirely on IP packet switching technology, which can provide high-speed Internet-oriented connections. The WiMAX network bears various multimedia services such as video, voice, and data. Various services require corresponding QoS support according to their own requirements for network characteristics such as bandwidth, delay, delay jitter, and packet loss rate. The WiMAX system needs to provide different QoS guarantees for different services. This guarantee is mainly reflected in the system's corresponding resource reservation for the network according to the QoS parameters requested by the service when the service is initiated, changed, or deleted.

In the WIMAX system, the functional entities related to QoS mainly include:

●SFM (Service Flow Management): Located in the BS (base station), it is responsible for the creation, activation, modification and deletion of service flows according to the situation of local wireless resources.

●SFA (Service Flow Authorization): located in the ASN, including the serving SFA (serving SFA) and anchor SFA (anchor SFA) that communicate with the MS (mobile station). The anchor SFA authorizes the service flow according to the local policy.

●PF (Police Function): Located in the CSN, it masters the user's QoS configuration and the relevant policy database in the CSN (Connectivity Service Network, connection service network), and is responsible for authorizing business requests.

The creation, modification and deletion of services can be initiated by the network or by the MS.

When the network initiates a dynamic service application, PF performs service authorization according to the user's QoS configuration and related policies, and then sends a resource reservation request (RR-Request) to SFA in the ASN, and SFA sends a resource reservation request to SFM after applying local policies , the SFM performs access control according to the radio resources of the BS, and then initiates a service establishment request to the MS. When the MS initiates a dynamic service request, the SFA in the ASN needs to send a policy decision request (PD-Request) to the PF (V-PF or H-PF) of the CSN. The PF judges whether to accept the request according to its associated policy database. If the PF rejects the PD-Request, the system does not allow the establishment of the service; if the PF accepts the PD-Request, it will instruct the SFA to initiate an RR-Request for resource reservation. Keep.

The current WiMAX standard draft defines RR-Request and PD-Request messages, and corresponding resource reservation response (RR-Response) and policy decision response (PD-Response) messages to handle dynamic service creation, modification and deletion. QoS function.

In the current WiMAX standard draft, the service application initiator can simultaneously piggyback multiple service flow requests in one RR-Request or PD-Request message, thus speeding up the service application process. When a business application passes through PF, SFA, and SFM, PF and SFA will impose local policies on the application business, and SFM will impose local admission control. The access network will decide whether to reserve corresponding resources for the application service according to the results of these policy decisions and controls.

After the service application, the system will make a corresponding RR-Response or PD-Response to the RR-Request or PD-Request.

The format of the response to the resource reservation request and the policy decision request is clear to those skilled in the art, so details will not be described herein.

When the system responds to a service application that contains a single or multiple service flows, the system will return a Reservation Result field for each flow in the service application, indicating the system's judgment result on the flow.

Table 1 shows the value of the ReservationResult field in the RR-Response or PD-Response message in the current standard draft.

Table 1. Representation of the Reservation Result field in the RR-Response or PD-Response message.

Resource reservation result or policy decision result

Table 1. Representation of the Reservation Result field in the RR-Response or PD-Response message.

Among them, the field Result (result field) indicates the result of resource reservation or policy decision, which can take the following values:

-0x0001: Successfully Created (successfully created)

-0x0002: Successfully Admitted

-0x0003: Successfully Activated (successfully activated)

-0x0004: Successfully Modified (successfully modified)

-0x0005: Request Denied-No resources (request denied - no resources)

-0x0006: Request Denied due to Policy (the request is denied due to policy)

-0x0007: Request Failed (Unspecified reason) (request failed (unspecified reason))

In prior art 1, when the service application accepting party makes a resource reservation or policy decision on an application carrying multiple service flows at the same time, because the resource requirement of one of the service flows is too high or does not comply with the system policy, the Reject the entire business application. However, when the business application fails, the business application initiator cannot know which flow caused the application failure, so it cannot make corresponding revisions to the application business and re-initiate the business application.

Contents of the invention

The present invention has been made in view of the above-mentioned problems of the prior art. In view of the current draft of the WiMAX standard, when the resource reservation or policy decision of a service application containing multiple service flows fails, the service application initiator cannot identify which service flow caused the failure. When the system returns the resource reservation or policy decision An identification value is added to the result to inform the initiator of the service application which flow caused the service application to fail.

According to one aspect of the present invention, a method for responding to a resource reservation or policy request is provided, including the following steps: a processing result acquisition step, obtaining a processing result for the request; a judging step, for the request When the processing result is negative, it is judged for each flow in the request whether the negative processing result is caused by the flow itself; in the writing step, according to the judgment result, in the response message of the request, write Enter different judgment result values.

Preferably, it also includes a sending step of sending the response message.

Preferably, the writing step is to write different judgment result values in the Result field of the response message for the stream.

Further, the judgment result value is a value indicating that the negative processing result is caused by the flow itself and a value indicating that the negative processing result is not caused by the flow itself.

Further, the value indicating that the negative processing result is caused by the flow itself is 0x0005 or 0x00006, and the value indicating that the negative processing result is not caused by the flow itself is 0x00008.

Preferably, when the judging step judges that the negative processing result is caused by a certain flow, it does not continue to judge for the unjudged flow, but determines that the judgment results of the unjudged flow are not caused by each flow. This is caused by the unchecked flow.

According to another aspect of the present invention, there is provided an apparatus for responding to a resource reservation request or a policy decision request, including: a processing result acquisition unit that acquires a processing result for the request; a judging unit that responds to the request When the processing result of the request is negative, it judges whether the negative processing result is caused by the flow itself for each flow in the request; the writing unit, according to the judgment result, in the response message of the request, for the flow Write different judgment result values.

Preferably, a sending unit is further included, configured to send the response message.

Preferably, the writing unit writes different judgment result values in the Result field of the response message for the stream.

Further, the judgment result value is a value indicating that the negative processing result is caused by the flow itself and a value indicating that the negative processing result is not caused by the flow itself.

Further, the value indicating that the negative processing result is caused by the flow itself is 0x0005 or 0x00006, and the value indicating that the negative processing result is not caused by the flow itself is 0x00008.

Preferably, when the judging unit judges that the negative processing result is caused by a certain flow, it does not continue to judge the unjudged flow, but determines the judgment results of the unjudged flow as no Caused by each of the said non-judged streams.

Description of drawings

Fig. 1 is a flow chart according to the method of the present invention;

Figure 2 is a flow diagram of the apparatus according to the invention.

Detailed ways

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. As shown in Figure 1, the method for responding to a resource reservation request or a policy decision request according to the present invention includes the following steps: a processing result acquisition step, obtaining a processing result for the request; a judging step, for the request When the processing result of the request is negative, it is judged for each flow in the request whether the negative processing result is caused by the flow itself; in the writing step, according to the judgment result, in the response message of the request, for the flow Write different judgment result values.

Preferably, it also includes a sending step for sending the response message.

When receiving a resource reservation request or a policy decision request, the access network will make a response whether to accept the request. The making of such a response is obvious to those skilled in the art, so it will not be described in detail herein. When a response of not accepting the request is made, that is, when negative processing is made, the present invention judges for each flow whether the negative processing result is caused by the flow itself, and according to the judgment result, in the response message of the request , write different judgment result values for this stream.

When judging whether the negative processing result is caused by the flow itself for each flow, it can be judged one by one until the judgment is made for each flow in the request. Alternatively, when it is determined that the negative processing result is caused by a certain flow, no further judgment is made on the unjudged flow, and all the judgment results of the unjudged flow are determined to be not caused by Each of the said unevaluated streams is caused.

Specifically, in the present invention, in the response message of resource reservation or policy decision, an identification value is added: 0x0008: Request Denied due to Requests for Other FlowsFailed (0x0008: the flow request is rejected due to the failure of other flow requests) .

In this way, in the present invention, the Reservation Result field in the response message for resource reservation or policy decision in the WiMAX system is shown in Table 2.

Table 2. Representation of the Reservation Result field in the RR-Response or PD-Response message.

Resource reservation result or policy decision result

Among them, the field Result (result field) indicates the result of resource reservation or policy decision, which can take the following values:

-0x0001: Successfully Created (successfully created)

-0x0002: Successfully Admitted

-0x0003: Successfully Activated (successfully activated)

-0x0004: Successfully Modified (successfully modified)

-0x0005: Request Denied-No resources (request denied - no resources)

-0x0006: Request Denied due to Policy (the request is denied due to policy)

-0x0007: Request Failed (Unspecified reason) (request failed, unspecified reason)

-0x0008: Request Denied due to Requests for Other Flows Failed (the flow request was rejected due to the failure of other flow requests)

Obviously, the 0x0008 may also be other values different from 0x0005 and 0x0006, as long as it does not conflict with other values of the Result field (result field). That is, it is illustrative only, not restrictive.

In this way, when a business application contains multiple business flows, these business flows must meet system policies or resource conditions at the same time to carry out the business. When the request of one of the streams does not comply with the system policy or the system resources cannot satisfy the request of the stream, the system will reject the application of this service, so that the service cannot be carried out.

In the implementation of the prior art, when the system cannot satisfy the request of one flow and rejects the application of the entire service, the result in the corresponding resource reservation response of each service flow in the application service will be set to 0x0005 (indicating that the system No resources for the corresponding flow), or the result in the corresponding policy decision response will be set to 0x0006 (indicating that the corresponding flow does not comply with system policy). In this way, the service applicant will not be able to know which flow caused the service application failure.

In the technical solution of the present invention, if the above situation occurs, then according to the judgment result, in the response to the flow that caused the service application to fail, the resource reservation result is set to 0x0005 (indicating that the system does not have resources for the corresponding flow) or the policy The decision result is set to 0x0006 (indicating that the corresponding stream does not conform to the system policy); for other streams that meet the system policy or resource conditions (that is, the request is rejected not due to its own reasons, but due to other streams) In the response, the resource reservation or policy decision result is set to 0x0008 (indicating that the request for this flow is rejected due to the failure of other flow requests). In this way, the service applicant will know which flow caused the service application failure from the returned request response results of all flows.

Based on the prior art, the present invention adds an identification value to the return result in the resource reservation response or policy decision response to indicate which flow in the application service flow is responsible for the failure of the service application. The effects of this are: (1) The initiator of the business application can know the reasons for the failure of resource reservation or policy decision; (2) The applicant can make corresponding business revisions according to the returned results and re-initiate the business application.

According to another aspect of the present invention, FIG. 2 shows an apparatus for responding to a resource reservation request or a policy decision request according to the present invention. As shown in FIG. 2 , the present invention responds to a resource reservation request or a policy decision request The responding device includes: a processing result acquisition unit, which acquires a processing result for the request; a judging unit, when the processing result for the request is negative, judges whether the negative processing result is determined by the request for each flow in the request. caused by the flow itself; the writing unit writes different judgment result values for the flow in the response message of the request according to the judgment result.

Preferably, the apparatus for responding to a resource reservation request or a policy decision request further includes a sending unit for sending the response message.

In addition, the writing unit may write different judgment result values in the Result field of the response message for the stream. The judgment result values are a value indicating that the negative processing result is caused by the flow itself and a value indicating that the negative processing result is not caused by the flow itself. Preferably, the value indicating that the negative processing result is caused by the flow itself is 0x0005 or 0x00006, and the value indicating that the negative processing result is not caused by the flow itself is 0x00008.

Preferably, when the judging unit judges that the negative processing result is caused by a certain flow, it does not continue to judge the unjudged flow, but determines the judgment results of the unjudged flow as no Caused by each of the said non-judged streams.

The above examples are merely illustrative. Various changes and modifications can be made by those skilled in the art based on the spirit of the present invention. For example, increase the value of 0x0009 to separate the resource reservation result from the policy decision result, and its relationship with 0x0008 is the same as the relationship between 0x0005 and 0x0006. In conclusion, the scope of the invention is defined by the appended claims.

Claims (12)

1. A method for responding to a resource reservation request or a policy decision request, comprising the following steps: A processing result obtaining step, obtaining a processing result for the request; A judging step, when the processing result for the request is negative, judging whether the negative processing result is caused by the flow itself for each flow in the request; The writing step is to write different judgment result values for the stream in the response message of the request according to the judgment result. 2. The method according to claim 1, further comprising the step of sending said response message. 3. The method according to claim 1, wherein the writing step is to write different judgment result values in the result field for the stream of the response message. 4. The method according to claim 3, wherein the judgment result value is a value indicating that the negative processing result is caused by the flow itself and a value indicating that the negative processing result is not caused by the flow itself. 5. The method according to claim 4, the value indicating that the negative processing result is caused by the flow itself is 0X0005 or 0x00006, and the value indicating that the negative processing result is not caused by the flow itself is the value of 0X0005 or 0X0005 or A value other than 0x00006. 6. The method according to claim 1, when the judging step determines that the negative processing result is caused by a certain flow, it does not continue to judge the flow that has not been judged, and the flow that has not been judged The judgment results of all are determined not to be caused by the streams that have not been judged. 7. An apparatus for responding to a resource reservation request or a policy decision request, comprising: a processing result obtaining unit, which obtains a processing result for the request; A judging unit, when the processing result of the request is negative, judging whether the negative processing result is caused by the flow itself for each flow in the request; The writing unit is configured to write different judgment result values for the stream in the request response message according to the judgment result. 8. The apparatus according to claim 7, further comprising a sending unit for sending the response message. 9. The device according to claim 7, wherein the writing unit writes different judgment result values in the result field for the stream of the response message. 10. The device according to claim 9, wherein the judgment result values are a value indicating that the negative processing result is caused by the flow itself and a value indicating that the negative processing result is not caused by the flow itself. 11. The device according to claim 10, wherein the value indicating that the negative processing result is caused by the flow itself is 0x0005 or 0x00006, and the value indicating that the negative processing result is not caused by the flow itself is It is a value other than 0x0005 or 0x00006. 12. The device according to claim 7, wherein when the judging unit judges that the negative processing result is caused by a certain flow, it does not continue to judge the unjudged flow, but the The judgment results of the unjudged streams are all determined not to be caused by the unjudged streams.

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