CN100417254C - Method and network for adjusting characteristics of internal interface data path in wireless access network - Google Patents

Abstract

The invention discloses a method and a network for adjusting the characteristics of an internal interface data path in a wireless access network. The method includes the following steps: the MSS initiates a dynamic service flow modification request to the BS; the BS requests the serving ASN-GW to modify part or all of the first data path corresponding to the dynamic service flow that the BS can satisfy the MSS needs to modify; the serving ASN-GW sends the anchor ASN-GW The GW requests to modify the service ASN-GW can satisfy part or all of the second data path corresponding to the first data path that the BS needs to modify; the anchor ASN-GW selects the modified data according to the information of the second data path that needs to be modified channel, and send a response message. The solution of the invention solves the problem of realizing the adjustment of the dynamic service flow data path without interrupting the service flow when the service flow characteristic is adjusted. The scheme is simple and easy to implement.

Description

Method and network for adjusting characteristics of internal interface data path in wireless access network

technical field

The invention relates to the communication field, in particular to a method and network for adjusting the characteristics of internal interface data paths in a wireless access network.

Background technique

With the vigorous development of Internet services and the wide application of wireless networks, General Packet Radio Service (GPRS, GPRS General Packet Radio Service), the third generation mobile communication system (3G), microwave access global interoperability (WiMAX, Worldwide Interoperability for Microwave Access) and post-3G (B3G, Beyond 3G) and other wireless systems have received a lot of applications and attention. The increase in the number of users and the increase in user requirements provide new requirements for the wireless access network system: it is required to support multiple services with large capacity, large data volume and different service quality requirements.

The wireless access network mainly completes the function of providing packet service forwarding or routing between the network and mobile users. Regardless of other internal devices in the access network, we will take the WiMAX network architecture system shown in Figure 1 as an example in the subsequent technical description (the technology provided by the present invention includes but is not limited to the application in the WiMAX system). The functions of each network element in Figure 1 are as follows:

Access Service Network (ASN, Access Service Network): ASN is defined as a set of network functions that provide wireless access services for WiMAX terminals. ASN includes a base station (BS, Base Station) and an access service network gateway (ASN-GW, Access Service Network Gate Way) network element. ASN mainly provides the following functions:

BS functions:

- Provide layer 2 (L2, Layer2) connection between BS and mobile subscriber station (MSS, Mobile Subscribe Station);

Functions of ASN-GW:

- Provide MSS with layer 3 (L3, Layer 3) information relay (Relay) function (such as IP address allocation);

- radio resource management;

Connectivity Service Network (CSN, Connectivity Service Network): CSN is defined as providing IP connection services for WiMAX terminals. CSN mainly provides the following functions:

- The tunnel from ASN to CSN is equivalent to the home agent (HA, HomeAgent) in mobile IP technology;

- Billing of WiMAX users and settlement between operators;

- Tunnel between CSNs in case of roaming;

- switching between ASNs;

MSS: MSS is a mobile user equipment, and the user uses this equipment to access the WiMAX network.

From the data perspective, the downlink MSS packet service datagram is transmitted from the HA of the CSN to the ASN through the R3 interface between the HA and the ASN-GW (called the anchor ASN-GW) in the ASN, and sent by the ASN - The GW sends the data of the MSS to the MSS through the R6 interface between the ASN-GW and the BS inside the ASN and the R1 interface between the BS and the MSS. If the ASN-GW connected to the HA in the CSN is different from the ASN-GW of the BS that controls MSS access (called the serving ASN-GW), the packet service datagram of the downlink MSS is sent from the HA of the CSN to the ASN through the HA. The R3 interface between the ASN-GW of the ASN is transmitted to the ASN, and the ASN-GW passes through the R4 interface between the ASN-GW and the ASN-GW inside the ASN, the R6 interface between the ASN-GW and the BS, and the BS and the MSS The R1 interface between them sends the data of the MSS to the MSS. Uplink data is passed from MSS to CSN along the opposite path and reaches the opposite end user. As mentioned above, there is a corresponding uplink and downlink data channel for each service flow of each MSS in the interface inside the ASN, which will be based on the quality of service (QoS) of each service flow when each service flow is established. The requirements and the way datapaths are used are established. When the service ends, that is, when the service flow is terminated, the corresponding data path needs to be released.

However, during the business process, due to changes in the requirements of upper-layer applications or network characteristics and network resource usage, dynamic service flow characteristics (such as: bandwidth, delay requirements, jitter, and service flow identification methods, data If the characteristics of the path itself change, etc.), then it is necessary to adjust the corresponding data path characteristics on the ASN internal interface (including the characteristics of the data path itself and the support for the change of the characteristics of the service flow it carries).

In order to support the establishment and release of the data path, the prior art defines the following primitives for the R6 path between the BS and the ASN-GW, and the R4 path between the ASN-GW.

message primitive From->To Message content Data Path EstablishmentRequest (Data Path Establishment Request) BS<->ASN GW; ASN-GW<->ASN GW MSS ID, a set of {session ID, data path information, classification information used to identify the service flow} that need to be established Data Path EstablishmentResponse (Data Path Establishment Response) ASN GW<->BS; ASN-GW<->ASN GW MSS ID, a set of {session ID, data path information, classification information used to identify the service flow} that need to be established Data Path EstablishmentAck (data path establishment confirmation) BS<->ASN GW; ASN-GW<->ASN GW MSS ID, a set of established {session ID} Data Path Release Request (data path release request) BS<->ASN GW; ASN-GW<->ASN GW MSS ID, a set of {session ID} that need to release the data path Data Path Release Response (data path release response) ASNGW<->BS; ASN-GW<->ASN GW MSS ID, a set of {session ID} that need to release the data path

Among them, the Data Path Establishment Request is used to establish a set of unidirectional MSS business paths, and is used to notify the receiving end of the message that after receiving the packet datagram of the identified MSS session, the datagram will be forwarded to this location according to the specified path. The sender of the message.

Among them, the Data Path Establishment Response is used to establish a set of reverse MSS service paths after receiving the data path establishment request, and is used to notify the receiving end of the Data Path EstablishmentResponse message after receiving the packet datagram of the identified MSS session Forwards the datagram to the sender of this message according to the specified path. The packet datagram is classified and identified according to the classification information of the service flow.

Finally, the completion of the entire data path establishment process is confirmed through the Data Path Establishment Ack message, which contains the established session identifier.

In the data path release process, the Data Path Release Request is used to release a set of unidirectional MSS business paths.

Among them, Data Path Release Response is used to release a set of reverse MSS business paths after receiving a data path release request.

The existing technology only provides a data path establishment and release mechanism. When the characteristics of the service flow change, in order to support this change, the existing technology can only release the corresponding data path on the ASN internal interface first, and then Then re-establish the data path according to the new service flow characteristics. Although this method is possible, message interaction increases, and it is impossible to indicate whether the release and re-establishment process of the data path is a modification of the same service, and this service will be misunderstood by the BS or ASN-GW inside the ASN as a service After the end and the addition of another new service, there will be a gap between the release and establishment of the data path, so that the service will be interrupted and the datagram will be lost.

Contents of the invention

The invention provides a method and a network for adjusting the characteristics of the data path inside the ASN without interrupting the service when the characteristics of the service flow are changed. It is used to solve the problems in the prior art that there is a gap in the release and establishment of the data path during the establishment and release of the data path, and the problems of service interruption and datagram loss.

The inventive method comprises:

A method for adjusting the characteristics of an internal interface data path in a wireless access network, comprising the following steps:

The mobile subscriber station MSS initiates a dynamic service flow modification request to the serving base station BS, and the request carries information about the dynamic service flow that needs to be modified;

The BS requests the service access service gateway ASN-GW to modify the first data path, and the request carries the information of the first data path that needs to be modified, and the information of the first data path that needs to be modified is that the BS can meet the requirements of the MSS. Information on part or all of the data paths corresponding to information on dynamic service flows;

The serving ASN-GW requests the anchor ASN-GW to modify the second data path, and the request carries the information of the second data path that needs to be modified, and the information of the second data path that needs to be modified is that the serving ASN-GW can meet the needs of the BS Information about part or all of the data paths corresponding to the modified first data path information;

The anchor ASN-GW selects a modified data path according to the information of the second data path to be modified, and sends a response message.

The second data path modification response message sent by the anchor ASN-GW to the serving ASN-GW carries information and results of the second data path requested to be modified.

The described method also includes the steps of:

The serving ASN-GW sends a first data path modification response message to the BS, carrying information and results of the first data path requested to be modified;

The BS sends a dynamic service flow modification response message to the MSS, carrying the result of the dynamic service flow modification request.

The described method also includes the steps of:

The MSS sends a dynamic service flow modification confirmation message to the BS;

The BS sends a first data path modification confirmation message to the serving ASN-GW;

The serving ASN-GW sends a second data path modification confirmation message to the anchor ASN-GW.

In the step of the BS requesting the serving ASN-GW to modify the first data path, the BS further includes judging whether it can satisfy the dynamic service flow modification request of the MSS, and if so, then entering the serving ASN-GW to the anchor ASN-GW Request to modify the step of the second data path, otherwise, enter the step:

The BS sends a dynamic service flow modification rejection message to the MSS.

The step of the serving ASN-GW requesting the anchor ASN-GW to modify the second data path further includes the serving ASN-GW judging whether it can satisfy the first data path modification request of the BS, and if so, entering the anchor ASN -The step of GW selecting the modified data path according to the information of the second data path that needs to be modified, and sending the response information, otherwise, entering the step:

The serving ASN-GW sends a message of rejecting the first data path modification to the BS.

The step of the BS requesting the serving ASN-GW to modify the first data path further includes:

After receiving the dynamic service flow modification request, the BS queries the resource management logical network element to obtain the data path information that can be modified.

The information of the first data path is the information of the data path that can be accepted and modified by the serving ASN-GW and the anchor ASN-GW.

The information of the second data path is the information of the data path that can be accepted and modified by the anchor ASN-GW.

The information of the first and second data paths includes session identifiers of one or more service flows that need to be modified and parameters that need to be modified.

The parameters mentioned include:

Datapath characteristics and/or supported Quality of Service (QoS) information.

The data path includes a downlink data path and an uplink data path.

A method for adjusting the characteristics of an internal interface data path in a wireless access network, comprising the following steps:

The anchor ASN-GW sends a first data path modification request to the serving ASN-GW, and the request carries the information of the first data path that needs to be modified, and the information of the first data path that needs to be modified is the information sent by the serving ASN-GW to the anchor Information on the data path between the ASN-GW;

The serving ASN-GW sends a second data path modification request to the BS, and the request carries the information of the second data path that needs to be modified, and the information of the second data path that needs to be modified is that the serving ASN-GW can meet the anchor ASN- Information on part or all of the data paths corresponding to the information on the first data path that the GW needs to modify;

The BS sends a dynamic service flow modification request to the MSS, and the request carries the information of the dynamic service flow that needs to be modified, and the information of the dynamic service flow that needs to be modified is that the BS can satisfy the second data path that needs to be modified to serve the ASN-GW Information on part or all of the data paths corresponding to the information;

The MSS modifies the corresponding service flow according to the information of the service flow to be modified, and returns a dynamic service flow modification response message.

The described method also includes the steps of:

The BS sends a second data path modification response message to the serving ASN-GW, carrying information and results of the second data path requested to be modified;

The serving ASN-GW sends the first data path modification response message to the anchor ASN-GW, carrying information and results of the first data path requested to be modified.

The described method also includes the steps of:

The anchor ASN-GW sends a first data path modification confirmation message to the serving ASN-GW;

The serving ASN-GW sends a second data path modification confirmation message to the BS;

The BS sends a dynamic service flow modification confirmation message to the MSS.

In the step of the serving ASN-GW sending the modification request of the second data path to the BS, the serving ASN-GW further includes judging whether it can satisfy the first data path modification request of the anchor ASN-GW, and if so, enters The step of BS sending a dynamic service flow modification request to MSS, otherwise, enter the step:

The serving ASN-GW sends a first data path modification rejection message to the anchor ASN-GW.

The step of the BS sending the dynamic service flow modification request to the MSS also includes the BS judging whether it can satisfy the dynamic service flow modification request of the serving ASN-GW, and if it can satisfy, then enter the service that the MSS modifies according to the requirement Flow information, modify the corresponding business flow, and return the step of dynamic business flow modification response message, otherwise, enter the step:

The BS sends a dynamic service flow modification rejection message to the serving ASN-GW.

The step of the anchor ASN-GW sending the first data path modification request to the serving ASN-GW further includes the step of: the anchor ASN-GW inquires the resource management logical network element, and obtains the information of the data path that can be modified.

The information of the first data path is the information of the data path that can be accepted and modified by the serving ASN-GW and the BS.

The information of the second data path is the information of the data path that can be accepted and modified by the BS.

In steps B and C, the information of the first and second data paths includes session identifiers of one or more service flows that need to be modified and parameters that need to be modified.

The parameters mentioned include:

Datapath characteristics and/or supported Quality of Service (QoS) information.

The data path includes a downlink data path and an uplink data path.

A method for adjusting the characteristics of an internal interface data path in a wireless access network, comprising the following steps:

The mobile subscriber station MSS initiates a dynamic service flow modification request to the serving base station BS, and the request carries information about the dynamic service flow that needs to be modified;

The BS requests the service access service gateway ASN-GW to modify the first data path, and the request carries the information of the first data path that needs to be modified, and the information of the first data path that needs to be modified is that the BS can meet the requirements of the MSS. Information on part or all of the data paths corresponding to information on dynamic service flows;

The serving ASN-GW selects a data path to be modified according to the information of the first data path to be modified, and sends a response message.

A method for adjusting the characteristics of an internal interface data path in a wireless access network, comprising the following steps:

The serving ASN-GW sends a first data path modification request to the BS, the request carries information about the first data path that needs to be modified, and the information about the first data path that needs to be modified is the data between the serving ASN-GW and the BS access information;

The BS sends a dynamic service flow modification request to the MSS, and the request carries the information of the dynamic service flow that needs to be modified, and the information of the dynamic service flow that needs to be modified is that the BS can satisfy the first data path that needs to be modified to serve the ASN-GW Information on part or all of the data paths corresponding to the information;

The MSS modifies the corresponding service flow according to the information of the service flow to be modified, and returns a dynamic service flow modification response message.

A wireless access network includes MSS, BS used for MSS access, serving ASN-GW and anchor ASN-GW providing data path.

The MSS is provided with a dynamic service flow modification request sending unit, which is used to send a dynamic service flow modification request to the BS, and the request carries the information of the dynamic service flow that needs to be modified;

The BS is provided with a first data path modification request sending unit, configured to send a first data path modification request to the serving ASN-GW, the request carrying information about the first data path that needs to be modified, and the first data path that needs to be modified The information of a data path is the information of part or all of the data path corresponding to the information of the dynamic service flow that the BS needs to modify;

The serving ASN-GW is provided with a second data path modification request sending unit for sending a second data path modification request to the anchor ASN-GW, the request carrying the information of the second data path that needs to be modified, and the need to modify The information of the second data path is the information of a part or all of the data paths corresponding to the information of the first data path that the serving ASN-GW can meet the modification required by the BS.

The network further includes a resource management logic network element, which stores network resource information, accepts query information sent by the BS, and returns query results.

A wireless access network includes MSS, BS used for MSS access, serving ASN-GW and anchor ASN-GW providing data path.

The anchor ASN-GW is provided with a first data path modification request sending unit, configured to send a first data path modification request to the serving ASN-GW, and the request carries information about the first data path that needs to be modified , the information of the first data path to be modified is the information of the data path between the serving ASN-GW and the anchor ASN-GW;

The serving ASN-GW is provided with a second data path modification request sending unit, configured to send a second data path modification request to the BS, the request carrying information about the second data path that needs to be modified, and the need The modified second data path information is part or all of the data path information corresponding to the information of the first data path that the serving ASN-GW needs to modify to satisfy the anchor ASN-GW;

The BS is provided with a dynamic service flow modification request sending unit, which is used to send a dynamic service flow modification request to the MSS, and the request carries the information of the dynamic service flow that needs to be modified, and the information of the dynamic service flow that needs to be modified is BS Part or all of the data path information corresponding to the information of the second data path that needs to be modified by the serving ASN-GW may be satisfied.

The network further includes a resource management logical network element, which stores network resource information, accepts query information sent by the anchor ASN-GW, and returns query results.

The beneficial effects of the present invention are as follows:

Compared with the prior art, the solution of the present invention solves the problem of realizing the adjustment of the dynamic service flow data path without interrupting the service flow when the service flow characteristic is adjusted. The scheme is simple and easy to realize.

Description of drawings

FIG. 1 is a schematic structural diagram of a WiMAX network architecture in the prior art;

Fig. 2 is a schematic diagram of a network structure of the present invention;

Fig. 3 is a schematic diagram of another network structure of the present invention;

Fig. 4 is the schematic flow chart of embodiment 1 of the present invention;

FIG. 5 is a schematic diagram of a network structure corresponding to Embodiment 1 of the present invention;

Fig. 6 is a schematic flow chart of Embodiment 2 of the present invention;

FIG. 7 is a schematic diagram of a network structure corresponding to Embodiment 2 of the present invention.

Detailed ways

The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings.

Aiming at the difference in the originator of the service flow characteristic adjustment, we propose a processing method for the service flow characteristic adjustment initiated by the MSS side and the service flow characteristic adjustment initiated by the network side. As shown in FIG. 2 , there is only the serving ASN-GW in the network, and there is no anchor ASN-GW. In the network shown in FIG. 3 , both the serving ASN-GW and the anchor ASN-GW exist. Among these processing methods, it mainly describes the situation where the anchor ASN-GW and the serving ASN-GW are not together, that is, the situation shown in Figure 3; and the network shown in Figure 2 can be regarded as a special case of the network shown in Figure 3: In the case shown in Fig. 2, the processing procedures between the anchor ASN-GW and the serving ASN-GW are ignored.

Solution 1: For the adjustment of service flow characteristics initiated by the MSS side:

S11. The MSS initiates a dynamic service flow modification request message (DSC-REQ) to the BS. The dynamic service flow modification request message (DSC-REQ) contains information about the dynamic service flow that needs to be modified; the BS will send the dynamic service flow The flow modification receiving message (DSC-RVD) is sent to the MSS, indicating that the BS has received the request message. If the BS determines that the modification request of the MSS cannot be satisfied, then execute S12, otherwise execute S13;

S12. The BS directly sends a response message (DSC-RSP) to the MSS, indicating that the dynamic service flow modification message is rejected. The MSS sends an acknowledgment message (DSC-ACK) to the BS.

If it is the BS decision that all modification requests are rejected, the whole process ends. Otherwise, the BS notifies the serving ASN-GW through a Data Path Modification Ack message.

If the serving ASN-GW decides that all modification requests are rejected, the whole process ends here. Otherwise, the serving ASN-GW notifies the anchor ASN-GW through the data path modification confirmation message (Data Path ModificationAck), and the whole process ends here.

S13. If the BS determines that part or all of the modification request of the MSS can be satisfied, it initiates a Data Path Modification Request message (Data Path Modification Request) to the serving ASN-GW, which contains the session identifier of the service flow that needs to be modified, and needs to be modified Parameters and other information of the data paths that may be modified, which specify the information of those path modification requests that the BS determines can be satisfied. It is used to apply for modification of the downlink (from the serving ASN-GW to the BS) data path between the BS and the serving ASN-GW, and also includes information about the uplink data path to be modified.

S14. The serving ASN-GW decides whether to meet the modification request of the MSS according to the resource situation and the request requirements, if all the session requirements are not satisfied, then indicate in the Data Path Modification Response message (Data Path Modification Response) to the BS All modification requests are rejected, execute S12, otherwise continue.

S15. The serving ASN-GW selects the session that can satisfy the path modification request and the corresponding path information and classification information (the information clearly includes the path modification request information that the serving ASN-GW determines can satisfy) through the data path modification request message (Data Path Modification Request) is sent to the anchor ASN-GW to apply for modifying the downlink (from the anchor ASN-GW to the serving ASN-GW) data path between the serving ASN-GW and the anchor ASN-GW, and also includes the need to modify information about the uplink data channel.

The anchor ASN-GW decides whether to meet the modification request of the MSS according to the resource situation and the request requirements, if all the session requirements are not satisfied, then execute S16; otherwise, the anchor ASN-GW sends a data path modification response message to the serving ASN-GW (Data Path Modification Response) indicates the session identifier that can accept the modification, the information and result of the downlink data path modification, and the information of the uplink (from the serving ASN-GW to the anchor ASN-GW) data path, the serving ASN-GW receives the After the message, according to the acceptance information of the anchor ASN-GW, in the Data Path Modification Response message (Data Path Modification Response) to the BS, indicate the session ID that can accept the modification, the information and results of the downlink data path modification, and the uplink (from the BS to the service ASN-GW) data path information, execute S17.

S16. If it is indicated in the Data Path Modification Response message (Data Path Modification Response) to the serving ASN-GW that all modification requests are rejected, after receiving the message, the serving ASN-GW sends the Data Path Modification Response message (Data Path Modification Response) to the BS. Path Modification Response) indicates that all modification requests are rejected, and S12 is executed.

S17. The BS directly sends a response message (DSC-RSP) to the MSS, indicating that the corresponding dynamic service flow modification request is successful. The MSS sends an acknowledgment message (DSC-ACK) to the BS. According to the success/failure confirmation message, the BS notifies the serving ASN-GW of the successfully confirmed session service flow identifier through the data path modification confirmation message (Data Path Modification Ack), and the serving ASN-GW passes the data path modification confirmation message (Data Path Modification Ack) The anchor ASN-GW is notified, and the whole process ends here.

In solution 1, the BS, the serving ASN-GW and the anchor ASN-GW all have the ability to judge their own resources, so after receiving the relevant information sent by the previous network element, they can all judge the capabilities, and will comply with the modification of their own resources. The request is sent to the next network element, and the modification request that does not meet its own capabilities is rejected.

In this solution, another method for judging its own resources can also be used, that is, after the BS receives the dynamic service flow modification request information sent by the MSS, it interacts with a resource management logical network element to obtain a data path that agrees to request modification, and then Then send a request to the serving ASN-GW and the anchor ASN-GW, in this case, the request will be accepted, (because the unacceptable ones can be clarified when the BS interacts with the resource management logic network element, and there is no need to send it to Serving ASN-GW and Anchor ASN-GW). This scheme can simplify the processing flow.

Example 1:

Embodiment 1 is a specific implementation of scheme one, as shown in Figure 4, is a schematic flow chart of embodiment 1 of the present invention, as can be seen from the figure, the present invention mainly comprises the following steps:

S111. The MSS initiates a dynamic service flow modification request message (DSC-REQ) to the BS.

S112. The BS sends a Dynamic Service Flow Modification Receive message (DSC-RVD) to the MSS, indicating that the BS has received the request message.

S113, the BS determines that the modification request of the MSS can be satisfied, and then initiates a Data Path Modification Request message (Data Path Modification Request) to the serving ASN-GW, which includes the session identifier of the service flow to be modified, the parameters to be modified and possible Additional information about the modified datapath. It is used to apply for modification of the downlink (from the serving ASN-GW to the BS) data path between the BS and the serving ASN-GW. This embodiment assumes that the characteristics of a downlink data path are modified.

S114. The serving ASN-GW judges that the modification request of the MSS is met according to the resource situation and the request requirements, and sends it to the anchor ASN-GW through a data path modification request message (Data Path Modification Request), which is used to apply for modifying the service ASN-GW and Downlink (from anchor ASN-GW to serving ASN-GW) data path between anchor ASN-GWs.

S115, the anchor ASN-GW judges that the modification request of the MSS is satisfied according to the resource situation and the request requirements, and the anchor ASN-GW indicates in the Data Path Modification Response message (Data Path Modification Response) to the serving ASN-GW that the session identifier that can accept modification , the downlink (from the anchor ASN-GW to the serving ASN-GW) data path modification result.

S116. After the serving ASN-GW receives the response message, according to the acceptance information of the anchor ASN-GW, it indicates in the Data Path Modification Response message (Data Path Modification Response) to the BS that the session identifier that can be modified is indicated in the downlink (from the anchor ASN -GW to serving ASN-GW) data path modification result.

S117. The BS directly sends a response message (DSC-RSP) to the MSS, indicating that the corresponding dynamic service flow modification request is successful.

S118. The MSS sends an acknowledgment message (DSC-ACK) to the BS, notifying the BS that the adjustment is successful, and the modified content takes effect on the BS side.

S119. The BS notifies the serving ASN-GW through a data path modification acknowledgment message (Data Path Modification Ack), and the modification takes effect on the serving ASN-GW.

S1110. The serving ASN-GW notifies the anchor ASN-GW through a data path modification acknowledgment message (Data Path ModificationAck), and the modified content takes effect on the anchor ASN-GW, and the whole process ends here.

The message primitives involved in the above process are defined as:

message primitive From->To Message content Data Path ModificationRequest (data path modification request) BS<->ASN GW; ASN-GW<->ASN GW MSS ID, a set of {session ID, data path information, classification information used to identify the service flow, session QoS information} that need to be modified Data Path ModificationResponse (data path modification response) ASN GW<->BS; ASN-GW<->ASN GW MSS ID, a set of {session ID, data path information, classification information used to identify the service flow, session QoS information} that need to be modified Data Path Modification Ack (data path modification confirmation) BS<->ASNGW; ASN-GW<->ASN GW MSS ID, a set of {session ID} to confirm modification

As shown in Figure 5, it is a schematic diagram of a network structure based on the method of the present invention. It can be seen from the figure that the network structure mainly includes MSS, BS for MSS access, service ASN-GW and anchor ASN-GW that provide data paths;

The MSS is provided with a dynamic service flow modification request sending unit, which is used to send a dynamic service flow modification request to the BS, and the request carries the information of the dynamic service flow that needs to be modified;

The BS is provided with a first data path modification request sending unit, configured to send a first data path modification request to the serving ASN-GW, the request carrying information about the first data path that needs to be modified, and the first data path that needs to be modified The information of a data path is the information of part or all of the data path corresponding to the information of the dynamic service flow that the BS needs to modify;

The serving ASN-GW is provided with a second data path modification request sending unit for sending a second data path modification request to the anchor ASN-GW, the request carrying the information of the second data path that needs to be modified, and the need to modify The information of the second data path is the information of part or all of the data path corresponding to the information of the first data path that the serving ASN-GW can meet the modification required by the BS.

The resource management logical network element stores network resource information, accepts query information sent by the BS, and returns query results.

Solution 2: For the service flow characteristic adjustment processing method initiated by the network side, in this case, all service flow adjustment requests will be triggered and started from the anchor ASN-GW, including the following steps:

S21. The anchor ASN-GW initiates a data path modification request message (Data Path Modification Request) to the serving ASN-GW. If the serving ASN-GW determines that the modification request of the anchor ASN-GW cannot be satisfied, S22 is executed; otherwise, S23 is executed.

S22. The serving ASN-GW directly sends a DataPath Modification Response message (DataPath Modification Response) to the anchor ASN-GW, indicating that all modification requests are rejected, indicating that the dynamic service flow modification message is rejected. The anchor ASN-GW sends a data path modification confirmation message (Data Path Modification Ack) to the serving ASN-GW. If the serving ASN-GW decides that all modification requests are rejected, the whole process ends. Otherwise, the serving ASN-GW notifies the BS through the Data Path Modification Ack message (Data Path Modification Ack), if the BS decides that all modification requests are rejected, the whole process ends here.

S23. If the serving ASN-GW determines that part or all of the modification request of the anchor ASN-GW can be satisfied, a Data Path Modification Request message (Data Path Modification Request) is initiated to the BS, which contains the session of the service flow to be modified Identification, parameters to be modified, and other information of the data path that may be modified. These information include the path modification request information that the serving ASN-GW determines can be satisfied, and are also used to apply for modifying the communication between the BS and the serving ASN-GW. Uplink (from BS to serving ASN-GW) data path.

S24. The BS decides whether to satisfy the modification request of the serving ASN-GW according to the resource conditions and the requirements of the request. If all the session requirements are not satisfied, then send a Data Path Modification Response message (Data Path Modification Response) to the serving ASN-GW. ) indicates that all modification requests are rejected, execute S22, otherwise continue, and also include the information of the downlink data channel that needs to be modified.

S25. The BS sends a dynamic service flow modification request message (DSC-REQ) to the MSS according to the identification of each service flow that needs to be modified in the received Data Path Modification Request message (Data Path Modification Request) and that can be satisfied by the BS's own resources. In principle, modification requests for all service flows can be carried in one DSC-REQ message. But currently, according to the protocol, one DSC-REQ message can only modify one service flow, so the number of DSC-REQs is the same as the number of service flows to be modified. The BS will receive one or more dynamic service flow modification response messages (DSC-RSP) to indicate the success/failure of dynamic service flow modification at the MSS side. When the BS receives the response message from the MSS for all service flows that need to be modified, it indicates in the Data Path Modification Response message (Data Path Modification Response) to the serving ASN-GW that it can successfully accept the modified session ID, and the uplink data path modification Information and results, as well as downlink (from serving ASN-GW to BS) data path information, after receiving the message, serving ASN-GW will modify the data path response message (Data Path Modification Response) indicates the session identifier that can accept the modification, the information and result of the modification of the uplink data path, and the information of the downlink (from the anchor ASN-GW to the serving ASN-GW) data path.

S26. The anchor ASN-GW notifies the serving ASN-GW through a data path modification confirmation message (Data Path Modification Ack), and the serving ASN-GW notifies the BS through a data path modification confirmation message (Data Path Modification Ack). These messages confirm that the final success can be achieved Information about the modified business flow. Only after receiving this message, the data path modification on this network element is valid. The BS sends a dynamic service flow modification successful confirmation message (DSC-ACK) to the MSS according to the identification of each service flow confirmed in the received Data Path Modification Ack (Data Path Modification Ack) message. For applications sent by other MSS Modify the service flow corresponding to the response (DSC-RSP) message, and then send a dynamic service flow modification failure confirmation message (DSC-ACK) to the MSS. The total number of confirmed service flows must be the same as the number of service flows corresponding to the application modification response (DSC-RSP) message sent by the MSS.

In principle, modifications to all service flows can be carried in one DSC-ACK message. However, if the air interface (interface between MSS and BS) protocol stipulates that one DSC-ACK message can only determine one service flow, then the number of DSC-ACKs is the same as the number of Application Modification Response (DSC-RSP) messages sent by MSS. same number.

In the second scheme, both the BS and the serving ASN-GW have the ability to judge their own resources. Therefore, after receiving the relevant information sent by the previous network element, they can judge their capabilities and send the modification request that matches their own resources to the next network element. The network element rejects the modification request that does not meet its own capabilities.

In this solution, another method of judging its own resources can also be used, that is, the anchor ASN-GW interacts with a resource management logical network element to obtain a data path that agrees to request modification, and then sends a request to the serving ASN-GW and BS , in this case, all requests will be accepted (because those that are not accepted can be clarified when the anchor ASN-GW interacts with the resource management logic network element, and need not be sent to the serving ASN-GW and BS). This scheme can simplify the processing flow.

Embodiment 2: Adjustment of multiple service flow characteristics initiated by the network side

Embodiment 2 is a specific implementation of scheme two. As shown in FIG. 6, it is a schematic flow chart of Embodiment 2 of the present invention. As can be seen from the figure, it mainly includes the following steps:

As shown in Figure 6, the specific process is as follows:

S211. The anchor ASN-GW initiates a Data Path Modification Request message (Data Path Modification Request) to the serving ASN-GW, and the message includes characteristic modification of multiple session service flows.

S212, the serving ASN-GW determines that the modification request of the anchor ASN-GW can be satisfied, and then initiates a data path modification request message (Data Path Modification Request) to the BS, which includes the session identifier of the service flow to be modified, and the modification request The parameters and other information of the data path that may be modified are used to apply for modifying the uplink data path between the BS and the serving ASN-GW (from the BS to the serving ASN-GW), and also include information about the downlink data path that needs to be modified.

S213, the BS judges that the BS can satisfy the modification request of the serving ASN-GW according to the resource conditions and the request requirements; the BS sends the identification of each service flow to be modified according to the received data path modification request message (ifiData Path ModificationRequest) in turn The MSS sends out a dynamic service flow modification request message (DSC-REQ). A DSC-REQ message can only modify one service flow, so the number of DSC-REQs is the same as the number of service flows to be modified. The BS will receive multiple dynamic service flow modification response messages (DSC-RES) to indicate the success/failure of the dynamic service flow modification at the MSS side. The BS can initiate a DSC-REQ for the next service flow after receiving the response DSC-RSP of the previous DSC-REQ. It is also possible to issue multiple DSC-REQs in parallel without waiting for the response of the previous request.

S214. After the BS receives the response message from the MSS for all service flows that need to be modified, it indicates in the Data Path Modification Response message (Data Path Modification Response) to the serving ASN-GW that it can successfully accept the modified session identifier, and the uplink data path Modified information and results, and downlink (from serving ASN-GW to BS) data path information.

S215. After receiving the message, the serving ASN-GW indicates in the Data Path Modification Response message (Data Path Modification Response) to the anchor ASN-GW according to the acceptance information of the BS, the session identification that can accept the modification, and the information of the uplink data path modification and results, as well as downlink (from the anchor ASN-GW to the serving ASN-GW) data path information. All modifications take effect on the anchor ASN-GW.

S216. The anchor ASN-GW notifies the serving ASN-GW through a data path modification acknowledgment message (Data Path Modification Ack), and the modification takes effect on the serving ASN-GW.

S217. The serving ASN-GW notifies the BS through a Data Path Modification Ack message (Data Path Modification Ack), which confirms the information of the service flow that can be successfully modified at last. The modification takes effect on the serving ASN-GW.

S218. The BS sends a dynamic service flow modification successful confirmation message (DSC-ACK) to the MSS according to the identification of each service flow confirmed in the received data path modification confirmation message (Data Path ModificationAck). For the received DSC- If there is no service flow successfully modified in the REQ, an acknowledgment message (DSC-ACK) of dynamic service flow modification failure is sent to the MSS. The number of service flows to be confirmed must match the number of service flows for modification in the application sent by the MSS. One DSC-ACK message can only confirm one service flow, so the number of DSC-ACK is the same as the number of application modification response messages (DSC-RSP) sent by MSS.

For the implementation process of the above two embodiments, in the data path modification message, information about the data path carrying the service flow may be included: the classification information of the service flow, the identification information of the data path, the QoS information of the service flow, etc., these The content may include uplink data path information, or downlink data path information, or uplink and downlink path information.

In the embodiment of the present invention, the adjustment information of the data path may include bandwidth, delay requirement, jitter, service flow identification mode, characteristics of the data path itself, and the like. These contents may include uplink data path information, or downlink data path information, or uplink and downlink path information.

In the entire service flow characteristic adjustment process, a distributed network resource management mechanism is adopted: each network element decides whether to modify the data path related to itself according to its own processing capability and corresponding resource usage.

As shown in Figure 7, it is a schematic diagram of the network structure based on the method of the present invention. It can be seen from the figure that the network structure mainly includes MSS, serving BS for MSS access, serving ASN-GW and anchor ASN-GW for providing data paths .

The anchor ASN-GW is provided with a first data path modification request sending unit, configured to send a first data path modification request to the serving ASN-GW, and the request carries information about the first data path that needs to be modified , the information of the first data path to be modified is the information of the data path between the serving ASN-GW and the anchor ASN-GW;

The serving ASN-GW is provided with a second data path modification request sending unit, configured to send a second data path modification request to the serving BS, the request carrying the information of the second data path to be modified, the The information of the second data path that needs to be modified is the information of some or all of the data paths corresponding to the information of the first data path that the serving ASN-GW needs to modify;

The serving BS is provided with a dynamic service flow modification request sending unit for sending a dynamic service flow modification request to the MSS, the request carrying information about the dynamic service flow that needs to be modified, and the information about the dynamic service flow that needs to be modified is The BS may satisfy part or all of the data path information corresponding to the information of the second data path that the serving ASN-GW needs to modify.

The network further includes a resource management logical network element, which stores network resource information, accepts query information sent by the anchor ASN-GW, and returns query results.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (29)

1. A method for adjusting internal interface data path characteristics in a wireless access network, characterized in that, comprising the following steps: The mobile subscriber station MSS initiates a dynamic service flow modification request to the serving base station BS, and the request carries information about the dynamic service flow that needs to be modified; The BS requests the service access service gateway ASN-GW to modify the first data path, and the request carries the information of the first data path that needs to be modified, and the information of the first data path that needs to be modified is that the BS can meet the requirements of the MSS. Information on part or all of the data paths corresponding to information on dynamic service flows; The serving ASN-GW requests the anchor ASN-GW to modify the second data path, and the request carries the information of the second data path that needs to be modified, and the information of the second data path that needs to be modified is that the serving ASN-GW can meet the needs of the BS Information about part or all of the data paths corresponding to the modified first data path information; The anchor ASN-GW selects a modified data path according to the information of the second data path to be modified, and sends a response message. 2. The method according to claim 1, wherein the second data path modification response message sent by the anchor ASN-GW to the serving ASN-GW carries the information of the second data path requested to be modified and result. 3. method as claimed in claim 2, is characterized in that, also comprises the step: The serving ASN-GW sends a first data path modification response message to the BS, carrying information and results of the first data path requested to be modified; The BS sends a dynamic service flow modification response message to the MSS, carrying the result of the dynamic service flow modification request. 4. method as claimed in claim 3, is characterized in that, also comprises the step: The MSS sends a dynamic service flow modification confirmation message to the BS; The BS sends a first data path modification confirmation message to the serving ASN-GW; The serving ASN-GW sends a second data path modification confirmation message to the anchor ASN-GW. 5. The method according to claim 1, wherein the step of the BS requesting the serving ASN-GW to modify the first data path further includes the BS judging whether it can satisfy the dynamic service flow modification request of the MSS, If it can be satisfied, then enter the step of the serving ASN-GW requesting the anchor ASN-GW to modify the second data path, otherwise, enter the step: The BS sends a dynamic service flow modification rejection message to the MSS. 6. The method according to claim 1, wherein the step of the serving ASN-GW requesting the anchor ASN-GW to modify the second data path further includes the serving ASN-GW judging whether it can meet the requirements of the BS. If the first data path modification request can be satisfied, then enter the anchor ASN-GW to select the modified data path according to the information of the second data path that needs to be modified, and send the response information; otherwise, enter the step: The serving ASN-GW sends a message of rejecting the first data path modification to the BS. 7. The method according to claim 1, wherein the step of the BS requesting the serving ASN-GW to modify the first data path further comprises: after the BS receives the dynamic service flow modification request, querying the resource management The logical network element obtains the information of the data path that can be accepted for modification. 8. The method according to claim 7, wherein the information of the first data path is information of a data path that can be accepted and modified by the serving ASN-GW and the anchor ASN-GW. 9. The method according to claim 8, wherein the information of the second data path is information of a data path that can be accepted and modified by the anchor ASN-GW. 10. The method according to claim 1, wherein the information of the first and second data paths includes session identifiers of one or more service flows that need to be modified and parameters that need to be modified. 11. the method for claim 10, is characterized in that, described parameter comprises: Datapath characteristics and/or supported Quality of Service (QoS) information. 12. The method according to claim 1, wherein said data path comprises a downlink data path and an uplink data path. 13. A method for adjusting internal interface data path characteristics in a wireless access network, characterized in that, comprising the following steps: The anchor ASN-GW sends a first data path modification request to the serving ASN-GW, and the request carries the information of the first data path that needs to be modified, and the information of the first data path that needs to be modified is the information sent by the serving ASN-GW to the anchor Information on the data path between the ASN-GW; The serving ASN-GW sends a second data path modification request to the BS, and the request carries the information of the second data path that needs to be modified, and the information of the second data path that needs to be modified is that the serving ASN-GW can meet the anchor ASN- Information on part or all of the data paths corresponding to the information on the first data path that the GW needs to modify; The BS sends a dynamic service flow modification request to the MSS, and the request carries the information of the dynamic service flow that needs to be modified, and the information of the dynamic service flow that needs to be modified is that the BS can satisfy the second data path that needs to be modified to serve the ASN-GW Information on part or all of the data paths corresponding to the information; The MSS modifies the corresponding service flow according to the information of the service flow to be modified, and returns a dynamic service flow modification response message. 14. The method of claim 13, further comprising the steps of: The BS sends a second data path modification response message to the serving ASN-GW, carrying information and results of the second data path requested to be modified; The serving ASN-GW sends the first data path modification response message to the anchor ASN-GW, carrying information and results of the first data path requested to be modified. 15. The method of claim 14, further comprising the steps of: The anchor ASN-GW sends a first data path modification confirmation message to the serving ASN-GW; The serving ASN-GW sends a second data path modification confirmation message to the BS; The BS sends a dynamic service flow modification confirmation message to the MSS. 16. The method according to claim 13, wherein the step of the serving ASN-GW sending the modification request of the second data path to the BS further includes the serving ASN-GW judging whether it can meet the requirements of the anchor ASN-GW. If the GW’s first data path modification request can be satisfied, then enter the step where the BS sends a dynamic service flow modification request to the MSS, otherwise, enter the step: The serving ASN-GW sends a first data path modification rejection message to the anchor ASN-GW. 17. The method according to claim 13, wherein the step of sending a dynamic service flow modification request from the BS to the MSS further includes the BS judging whether it can satisfy the second data path modification request of the serving ASN-GW , if it can be satisfied, then enter the step of MSS modifying the corresponding service flow according to the information of the service flow that needs to be modified, and return a dynamic service flow modification response message, otherwise, enter the step: BS sends a rejection to the serving ASN-GW Dynamic traffic modification messages. 18. The method according to claim 13, wherein the step of sending the first data path modification request to the serving ASN-GW by the anchor ASN-GW further comprises the steps of: The anchor ASN-GW queries the resource management logical network element to obtain the information of the data paths that can be modified. 19. The method according to claim 18, wherein the information of the first data path is information of a data path that can be accepted and modified by the serving ASN-GW and BS. 20. The method according to claim 18, wherein the information of the second data path is information of a data path that can be accepted and modified by the BS. 21. The method according to claim 13, wherein the information of the first and second data paths includes session identifiers of one or more service flows that need to be modified and parameters that need to be modified. 22. the method for claim 21, is characterized in that, described parameter comprises: Datapath characteristics and/or supported Quality of Service (QoS) information. 23. The method according to claim 13, wherein said data path comprises a downlink data path and an uplink data path. 24. A method for adjusting internal interface data path characteristics in a wireless access network, comprising the following steps: The mobile subscriber station MSS initiates a dynamic service flow modification request to the serving base station BS, and the request carries information about the dynamic service flow that needs to be modified; The BS requests the service access service gateway ASN-GW to modify the first data path, and the request carries the information of the first data path that needs to be modified, and the information of the first data path that needs to be modified is that the BS can meet the requirements of the MSS. Information on part or all of the data paths corresponding to information on dynamic service flows; The serving ASN-GW selects a data path to be modified according to the information of the first data path to be modified, and sends a response message. 25. A method for adjusting the characteristics of an internal interface data path in a wireless access network, comprising the following steps: The serving ASN-GW sends a first data path modification request to the BS, the request carries information about the first data path that needs to be modified, and the information about the first data path that needs to be modified is the data between the serving ASN-GW and the BS access information; The BS sends a dynamic service flow modification request to the MSS, and the request carries the information of the dynamic service flow that needs to be modified, and the information of the dynamic service flow that needs to be modified is that the BS can satisfy the first data path that needs to be modified to serve the ASN-GW Information on part or all of the data paths corresponding to the information; The MSS modifies the corresponding service flow according to the information of the service flow to be modified, and returns a dynamic service flow modification response message. 26. A wireless access network, comprising MSS, a BS for MSS access, a service ASN-GW and an anchor ASN-GW providing a data path, characterized in that: The MSS is provided with a dynamic service flow modification request sending unit, which is used to send a dynamic service flow modification request to the BS, and the request carries the information of the dynamic service flow that needs to be modified; The BS is provided with a first data path modification request sending unit, configured to send a first data path modification request to the serving ASN-GW, the request carrying information about the first data path that needs to be modified, and the first data path that needs to be modified The information of a data path is the information of part or all of the data path corresponding to the information of the dynamic service flow that the BS needs to modify; The serving ASN-GW is provided with a second data path modification request sending unit for sending a second data path modification request to the anchor ASN-GW, the request carrying the information of the second data path that needs to be modified, and the need to modify The information of the second data path is the information of a part or all of the data paths corresponding to the information of the first data path that the serving ASN-GW can meet the modification required by the BS. 27. The network according to claim 26, further comprising a resource management logical network element storing network resource information, which accepts query information sent by the BS, and returns query results. 28. A wireless access network, comprising an MSS, a BS for MSS access, a service ASN-GW and an anchor ASN-GW providing a data path, characterized in that: The anchor ASN-GW is provided with a first data path modification request sending unit, configured to send a first data path modification request to the serving ASN-GW, and the request carries information about the first data path that needs to be modified , the information of the first data path to be modified is the information of the data path between the serving ASN-GW and the anchor ASN-GW; The serving ASN-GW is provided with a second data path modification request sending unit, configured to send a second data path modification request to the BS, the request carrying information about the second data path that needs to be modified, and the need The modified second data path information is part or all of the data path information corresponding to the information of the first data path that the serving ASN-GW needs to modify to satisfy the anchor ASN-GW; The BS is provided with a dynamic service flow modification request sending unit, which is used to send a dynamic service flow modification request to the MSS, and the request carries the information of the dynamic service flow that needs to be modified, and the information of the dynamic service flow that needs to be modified is BS Part or all of the data path information corresponding to the information of the second data path that needs to be modified by the serving ASN-GW may be satisfied. 29. The network according to claim 28, further comprising a resource management logic network element storing network resource information, which accepts the query information sent by the anchor ASN-GW, and returns the query result.

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