WO2007003142A1

WO2007003142A1 - Method for providing distinguishing service in communication network

Info

Publication number: WO2007003142A1
Application number: PCT/CN2006/001573
Authority: WO
Inventors: Yan Zhou
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2005-07-05
Filing date: 2006-07-05
Publication date: 2007-01-11
Also published as: CN1794868A; CN100459797C

Abstract

A method for providing distinguishing service in communication network mainly includes the following steps: when the data path used in the session (service stream) is required to release, a releasing data path message including session identifier information is transmitted, then the corresponding session data path is released by respective network entities based on the session identifier information in the releasing data path message. The releasing can be initiated not only by BS, but also by ASN GW. Thus, the invention enables the WiMax signaling process to support different QoS service for different session in the same MSS. Meanwhile, the invention adds the initiating process of session establishing from ASN-GW within WiMax to BS, and the application condition of establishing data path among WiMax ASN GW. In conclusion, in the invention, all of the data path establishing request/response message may carry QoS information to incorporate the existing QoS negotiation local process.

Description

Method for providing differentiated service in communication network

Technical field

The present invention relates to the field of network communication technologies, and in particular, to a method for providing differentiated services in a communication network. Background of the invention

In existing wireless communication systems, such as WCDMA (Wideband Code Division Multiple Access) systems, CDMA (Code Division Multiple Access) systems, different service quality guarantees are usually provided to different users as needed, thereby providing users with a distinction. service.

With the development of wireless communication technology, the WiMax (Worldwide Interoperability for Microwave Access) system has become a new wireless broadband access technology that is competing in wireless communication systems. The WiMax system mainly includes an ASN (Access Service Network), a CSN (Connected Service Network), and an MSS (Mobile Terminal), where: the ASN is used to provide a network function set for providing wireless access services to a WiMAX terminal. The ASN specifically includes a BS (Base Station) and an ASN GW (ASN Gateway) network element, and an ASN may be shared by multiple CSNs (Connected Service Networks); the CSN is used to provide an IP connection service for a WiMAX terminal, where It also includes the AAA server (Authentication Authentication Accounting Server) feature.

In the case of WCDMA systems and CDMA, it is also necessary to provide users with corresponding QoS (Quality of Service) guarantees in WiMax systems, that is, sub-users provide different QoS guarantees. However, in the current WiMax system, it is not possible to provide a complete QoS guarantee for different users or different sessions between the BS and the ASN GW, and between the ASN GW and the ASN.

Therefore, it is currently not possible to provide different quality of service guarantees for different users and different sessions in the WiMax system.

At the same time, there are also problems in other wireless communication networks and wired transmission networks that cannot provide different quality of service guarantees for different users and different sessions. Summary of the invention

It is an object of the present invention to provide an implementation method for providing differentiated services in a communication network, thereby providing differentiated QoS guarantees for different sessions in a communication network such as WiMax.

The object of the invention is achieved by the following technical solutions:

The present invention provides an implementation method for providing a differentiated service in a communication network, including: in a communication network, when a data path used by a session needs to be released, sending session identification information is included Release the data path message;

Each network entity releases the data path used by the corresponding session according to the session identification information in the received release data path message.

The session identification information may be session identification information of at least one session of the user terminal, or indication information of all sessions of the user terminal.

In the present invention, before the sending the release data message, the method further includes:

In the communication network, the first network entity interacts with the second network entity to include a data path setup message with session identification information, and establishes a corresponding data path for the corresponding session.

The data path setup message may further include QoS parameter information, and establish a corresponding data path according to the QoS parameter information; and when the QoS parameter information has been obtained, the message in the process does not need to be carried. QoS parameter information.

The data path setup message includes:

A data path setup request message, a data path setup response message, and a data path setup confirmation message. The network entity includes a service access service network gateway, an anchor access service network gateway, and a base station.

The information content carried in the release data path message includes: user terminal identification information and session identification information.

The session identification information specifically includes: session identification information of at least one session of the user terminal, or indication information of all sessions of the user terminal.

The releasing data path message includes: releasing a data path request message and releasing a data path response message;

Or,

Data path teardown message and data path teardown response message;

Or,

The data path releases the acknowledgement message.

The sending the release data path message including the session identifier information specifically includes:

In the communication network, when the data path used by the session needs to be released, the service access service network gateway, the anchor access service network gateway or the base station sends a release data path message containing the session identification information;

In the present invention, when the data path setup message and the data path teardown message are in the service access service network network When the gateway and the anchor access the service network gateway interact, the service access service network gateway or the anchor access service network gateway initiates, and different data path establishment messages or data path teardown messages may be initiated according to different sessions.

In the present invention, when the data path setup message and the data path teardown message are exchanged between the service access service network gateway and the anchor access service network gateway, the corresponding application scenarios include: non-handover, session or service flow When accessing the service network gateway through the anchor; and when switching, multiple data paths must be allowed to be established between the new service access service network gateway and the anchor access service network gateway depending on the session or service flow.

The communication network includes but is not limited to: a microwave communication global communication wireless communication network such as a WiMax system network and a wired communication network.

The network entity releases the data path of the corresponding session according to the session identification information in the received release data path message, including: the network entity receives the release data path message, and obtains the session identification information, according to the session identification information. Release the data path of the corresponding session;

Or,

The network entity receives the release data message and obtains the data path index information therein, and releases the corresponding data path according to the data path index.

The present invention also provides a method for implementing a differentiated service in a communication network, including: in a communication network, when a data path needs to be established for a session, a data path setup message including session identification information is sent;

Each network entity establishes a data path corresponding to the session according to the session identification information in the received data path setup message.

The data path setup message may further include QoS parameter information, and establish a corresponding data path according to the QoS parameter information; and when the QoS parameter information has been obtained, the message in the process does not need to be carried. QoS parameter information. .

The data path setup message includes: a data path setup request message, a data path setup response message, and a data path setup acknowledgement message.

It can be seen from the technical solution provided by the present invention that the present invention can carry QoS information in all data path setup request/response messages to merge existing QoS negotiation local processes, so that the WiMax signaling process can completely support the same MSS enjoys different QoS services for different sessions. At the same time, the invention also complements the internal WiMax ASN The ASN-GW initiates a session establishment process to the BS. Moreover, the present invention supplements the application scenario of establishing a data path between the WiMax ASN GWs, that is, when the non-handover is performed, when the normal session passes through the Anchor ASN GW, a data path needs to be established between the Serving ASN GW and the Anchor ASN GW; The ASN GW and the Anchor ASN GW need to establish multiple data paths according to the session. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram 1 of a specific implementation flow of a data path establishment process of an R4 interface;

2 is a schematic diagram of a specific implementation process of the data path establishment process of the R4 interface 2;

FIG. 3 is a schematic diagram of a specific implementation process of a process of releasing a data path. Mode for Carrying Out the Invention The core of the present invention is to extend the message in the communication network, and to increase the session identifier and the quality of service information, so that the establishment and release management of the data path in the access network can be realized based on the session, so as to facilitate WiMax, etc. The QoS guarantee is implemented for the corresponding session in the broadband wireless access system. Taking the WiMax system as an example, the basic QoS negotiation process, the R6 interface data path establishment process, and the R4 interface switching process are currently defined in the system.

In the basic QoS negotiation process, the data path establishment process and the QoS negotiation process between the Serving ASN GW (Service ASN GW) and the Anchor ASN GW (Anchor ASN GW) are not defined. In this way, when an operator needs to apply a specific Anchor ASN GW for charging check or other applications, the corresponding data path cannot be established, and the corresponding QoS parameter information cannot be obtained, and the corresponding application cannot be implemented.

In the handover procedure of the R4 interface, the QoS information cell between the Target ASN GW (the target ASN GW, ie, the new Serving ASN GW) and the Anchor ASN GW is not defined; and, the Target BS, the Target ASN GW is not explicitly stated. Between the Anchor ASN GWs, multiple different Data Paths need to be established according to different QoS levels of the Session. When released, it also fails to allow single or multiple or all sessions of the same MSS to be released.

In addition, in the relevant regulations of the system, the R6 interface also has a similar problem, that is, no different Data Paths are established according to different QoS levels of the Session, and the same MSS cannot be released when released. Single or multiple or all sessions.

Moreover, the data path setup and release procedure of the R6 interface does not consider the situation initiated from the ASN GW.

Based on the above problems, the present invention needs to include, for example, a data path establishment/release process in a WiMax system. Modification of the following content:

1. It is clear that the data path in WiMax should distinguish different sessions of the same MSS, that is, different data paths are established and released according to different sessions. Specifically, it is applied between BS-ASN GWs, between ASN GWs, and between BSs.

2. In the WiMax basic QoS negotiation process, define the negotiation process between the Serving ASN GW and the Anchor ASN GW, or the data path establishment process. The data path setup message contains QoS, for the session, and can be initiated or released from the Serving ASN GW or Anchor ASN GW. Allows only one Data session of one or more sessions or all sessions of the same MSS to be released in a release message.

3. In the handover process of the WiMax R4 interface, define the QoS information cell between the Target ASN GW (the new Serving ASN GW) and the Anchor ASN, which can be added to the Data Path Establish Req/Res/Ack.

(data path setup request/response/confirmation) message, and explicitly establish multiple Data Pathc for different sessions

4. In the handover process of the WiMax R4 interface, define an index ID of the session in each message flow between the Target ASN GW (new Serving ASN GW) and the Anchor ASN GW, and allow only one or more of the same MSS to be released. The Data Path of the session or all sessions.

5. In the handover process of the WiMax R4 interface, it is clear that the Target BS, the Target ASN GW, and the Anchor ASN GW are allowed to establish multiple different Data Paths according to different QoS levels of the Session, at least in different DSCP code identifiers. .

In the session flow of the WiMax R6 interface, the Data Path Establish message is used between the BS and the ASN GW, and optionally the QoS parameter information is carried (the relevant QoS parameter information is obtained when the previous signaling process is obtained), and the session needs to be carried. Index makes it easy to distinguish Data Paths by session to reflect different QoS services for different sessions. Accordingly, the Data Path Release message also needs to distinguish between sessions (which carry the identity information of the session that needs to be released) and allows the release of a single session, multiple sessions, or all sessions of the same MS. And the Data Path Establish and Release messages may be initiated from the BS or from the ASN GW. The specific technical implementations of the above various modifications proposed by the present invention will be described in detail below with reference to the accompanying drawings.

First, in the basic QoS negotiation process of the WiMax, the negotiation process between the Serving ASN GW and the Anchor ASN GW needs to be defined, that is, the process of applying the common uplink and downlink data establishment process is defined.

When the operator needs to use the Anchor ASN GW for charging check or other special application, and designates a fixed Anchor ASN GW, and is different from the Serving ASN GW, it needs to increase the bidirectional data path establishment between the Anchor ASN GW and the Serving ASN GW. The release process message specifically includes: 1. Data Path Establish Request message;

2. Data Path Establish Response message;

3. Data Path Establishment Ack (data path establishment confirmation) message;

4. Data Path Release Request message;

5. Data Path Release Response message.

6. Data Path Release Ack message.

Or other messages that have the same similar effect.

As shown in Figure 1, the Data Path Establish Request message triggered by the Serving ASN GW is applied to the data path establishment process initiated by the MSS or the data path establishment process initiated by the Serving ASN GW.

Step 11: When the Serving ASN generates a trigger event or receives a corresponding message, it sends a data path establishment request message to the Anchor ASN GW;

Step 12: After receiving the request message, the Anchor ASN GW returns a data path establishment response message to the Serving ASN GW.

Step 13: The Serving ASN GW sends a Data Path Setup Acknowledgement message to the Anchor ASN GW. At this point, the data path between the Anchor ASN GW and the Serving ASN GW is established.

As shown in FIG. 2, the Data Path Establish Request message triggered by the Anchor ASN GW is applied to the QoS negotiation process initiated by the network side, and specifically includes: Step 21: When the Anchor ASN GW generates a trigger event or receives a corresponding message, it sends a message to Serving. The ASN GW sends a data path setup request message;

Step 22: After receiving the request message, the Serving ASN GW returns a data path establishment response message to the Anchor ASN GW.

Step 23: The Anchor ASN GW sends a data path setup confirmation message to the Serving ASN GW. At this point, the data path between the Anchor ASN GW and the Serving ASN GW is established.

The actual application process of establishing a data path between the Serving ASN GW and the Anchor ASN GW is not limited to the above two application scenarios. In addition to the above data path establishment process, when the session process ends, the data path between the Anchor ASN GW and the Serving ASN GW needs to be released, and the specific release process is implemented by the above data path release request and response message.

In the data path release M process, the Data Path Release Request message may be The Serving ASN GW or the Anchor ASN GW is initiated by either party. In the above data path establishment and release process, the present invention implements different data paths for different sessions, and can also release the data path based on the session when the data path is released, thereby providing different sessions. Different QoS guarantees. In order to implement the session-based data path establishment and release process, the R4 interface (the interface between the Anchor ASN GW and the Serving ASN GW) and the R6 interface (the interface between the BS and the ASN GW) in the WiMax system are respectively implemented. Session-based data path establishment and release processing.

The following describes the corresponding processing on the R4 interface in the WiMax system:

In the handover procedure of the R4 interface in the WiMax system, the QoS information cell between the Target ASN GW (new Serving ASN GW) and the Anchor ASN GW needs to be defined, and the cell is carried in Data Path Establish Req/Res/Ack. In the message. And in the Data Path Release Request/Response message, the identification information of the session is added, that is, the index ID of the session or the SF Context (Service Flow Context) is used to identify the session, and only one or more sessions of the same MSS are allowed to be released. Data Path.

The information contained in the above existing messages is shown in Table 1 - Table 1

In order to implement the present invention, the content of each message in Table 1 above needs to be added as follows -

1, Data Path can be for MSS, but also for Session (session);

2, Data Path Info should contain QoS information, not just classification information (Classification Info), can be with more QoS information (including the entire or local parameter set). In a specific scenario, for example, the Anchor ASN GW wants to also generate and check the charging bills, then the QoS needs to be sent to the Anchor ASN Gl in some scenarios. The Anchor ASN GW only needs to obtain the same classification information, so it can only carry the classification information. Carrying the entire QoS information also allows the data path establishment process to merge the QoS negotiation process to reduce the process interaction.

3. The Data Path Release Request and the Response must include the Session information, and the Data Path of the single or multiple sessions of the same MSS is allowed to be released (that is, "multiple session within the MSS is allowed in this message" in Table 2). Use the All Session Indicator to indicate whether to release all sessions.

The content information contained in each updated message is shown in Table 2;

Table 2

It should be noted that the message name and cell name in Table 2 above may change, but the idea of operating the Data Path according to the session belongs to the protection scope of the present invention.

If the messages described in Table 2 are used, in the handover process of the WiMax R4 interface, it can be clearly and consistently stated that the Target QoS, the Target ASN GW, and the Anchor ASN GW are different according to different QoS levels of the Session (multiple Session) Create multiple different Data Paths. .

Therefore, it can be noted that, in the present invention, only one Date Path can be created for the same MSS between the Target ASN GW and the Anchor ASN, and the corresponding Data Path is established for each session of the same MSS. That is, the Data Path is defined for different QoS sessions of each MSS, so that each user can be targeted The Session distinguishes the QoS class for processing.

For a special scenario, the present invention also allows all service flows of the user to be uniformly processed according to the level of the user (ie, QoS information) or the highest service level of the user. In this case, only one Data Path can be established for the user to simplify. deal with.

The following describes the corresponding processing on the R6 interface in the WiMax system:

First, in the session flow of the R6 interface in the WiMax system, a Data Path Establish message is used between the BS and the ASN GW, where the QoS information is optionally carried (the related information is obtained in the previous signaling procedure), but the Session Index needs to be carried. Session index), that is, the session identification information of the corresponding session, so as to distinguish the Data Path by session to reflect different QoS services of different sessions.

Correspondingly, the Data Path Release message used between the BS and the ASN GW also needs to distinguish between sessions and allows the release of a single session, multiple sessions, or all sessions of the same MS.

Moreover, the Data Path Establish and Release messages may be initiated from the BS or from the ASN GW.

In the prior art, the contents of the Data Path Establish and Release messages of the R6 interface are as shown in Table 3:

table 3

In the present invention, in order to be able to distinguish or establish a corresponding data path, the content of the message in Table 3 needs to be modified, and the content information of the modified corresponding message is as shown in Table 4:

Table 4 Primitives From -> To Messaqe Content

MSS ID, single or multiple {Session Info

Data Path Establishment QoS Info, Data Path Info}, Multicast Info, Request BS<- -> ASM GW (multiple session within same MSS is allowed in this message)

MSS ID, single or multiple { Session Info,

Data Path Establishment QoS Info, Data Path Info}, Redirection, Response ASN GW <- > BS (multiple session within same MSS is allowed in this message)

MSSID, single or multiple {Session Info}

Data Path Establishment

BS <-> ASN GW (multiple session within same MSS is Ack

Allowed in this message)

MSS ID, single or multiple {Session Info}

Data Path Release ( multiple session within same MSS is Request BS <-> ASN GW allowed in this message ) , all sessions

Indicator

MSS ID, single or multiple {Session Info}

Data Path Release ( multiple session within same MSS is Response ASN GW <-> BS allowed in this message ) , all sessions

Indicator

MSS ID, single or multiple {Session Info} ( multiple session within same MSS is

Data Path Release Ack BS <-> ASN GW allowed in this message ) , all sessions

Indicator

Data— Path Revoke MSS ID, single or multiple {Session Index }

ASN GW -> BS (multiple session within same MSS is removed data path allowed in this message)

Data— Path Revoke Rsp MSS ID, single or multiple {Session Index}

BS -> ASN GW (multiple session within same MSS is removed data path response allowed in this message)

Start HO/Start Switch SBS -> ASN GW MSSID It should be noted that the message name and cell name in Table 4 above may change, but the idea of operating the Data Path according to the session belongs to the protection scope of the present invention.

In the above Table 4, the bold black-faced portion is the information content newly added to each message of the present invention.

Therefore, in the present invention, when the data path used by the session needs to be released, the data path used by one or more sessions of the same user may be released. The specific processing is to release the data path between the BS and the ASN GW, for example, for example, for example, for example, As shown in Figure 3, the following processes are included:

Step 31: When it is required to release the data path used by one or more sessions of the user, the ASN GW sends a release data path request message to the BS, where the message carries the user terminal that needs to release the data path used by the session. The identification information, and the session identification information corresponding to the session to be released, may include at least one session identification information, or may release all the sessions of the user terminal. In this case, the indication information corresponding to all the session identification information needs to be set to effective; The session identifier information includes: a session index and/or a data path index information, and may also be other similar difference information that can distinguish different sessions;

Step 32: After receiving the release data path request message, the BS releases the data path corresponding to the corresponding session identification information, and returns a release data path response message to the ASN GW.

Specifically, when the session identifier information is the session index information, the BS receives the release data path message, and obtains the session index information therein, and then releases the data path of the corresponding session according to the session index; or When the session identifier information is the data path index information, the BS obtains the data path index information from the received release data path message, and releases the corresponding data path according to the data path index information, thereby implementing the corresponding session. freed.

In this way, a data path for selectively releasing any session of the same user terminal can be realized, and a session-based quality of service guarantee can be realized.

In summary, the implementation of the present invention can establish corresponding data paths for different sessions in a communication network such as WiMax, and each data path corresponds to different QoS parameter information, that is, corresponding to different QoS identifiers, so that different service levels can be divided. Each session is separately scheduled to implement session-based quality of service guarantees.

In summary, the implementation of the present invention enables the WiMax signaling process to fully support different sessions of the same MSS to enjoy different QoS services, and supplements the application scenario in which the data path is established between the WiMax ASN GWs, that is, when the handover is not performed, the normal session When passing through the Anchor ASN GW, a data path needs to be established between the Serving ASN GW and the Anchor ASN GW.

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

Claims

Rights request

A method for providing a differentiated service in a communication network, characterized in that:

In the communication network, when it is required to release the data path used by the session, a release data path message containing the session identification information is sent;

The method for implementing the differentiated service in the communication network according to claim 1, wherein the session identifier information is session identifier information of at least one session of the user terminal, or all sessions of the user terminal Instructions.

3. The method for providing a differentiated service in a communication network according to claim 1, wherein before the sending the release data path message, the method further comprises: in the communication network, the first network entity and the first The interaction between the two network entities includes a data path setup message with session identification information, and a corresponding data path is established for the corresponding session.

The method for providing a differentiated service in a communication network according to claim 3, wherein the data path setup message further includes QoS parameter information, and is established according to the QoS parameter information. Corresponding data path; and when the QoS parameter information has been obtained, the message in this process does not need to carry QoS parameter information.

The method for providing a differentiated service in a communication network according to claim 3, wherein the data path setup message comprises:

A data path setup request message, a data path setup response message, and a data path setup confirmation message.

The method for providing a differentiated service in a communication network according to claim 3, wherein the network entity comprises:

The service access service network gateway, the anchor access service network gateway, and the base station. ,

The method for providing a differentiated service in a communication network according to any one of claims 1 to 6, wherein the information content carried in the release data path message comprises: user terminal identification information and session identification information. .

The method for implementing the differentiated service in the communication network according to claim 7, wherein the session identifier information specifically includes: session identifier information of at least one session of the user terminal, or all of the user terminal Instructions for the session.

The method for providing a differentiated service in a communication network according to claim 7, wherein the releasing the data path message comprises:

Release the data path request message and release the data path response message;

Or,

Data path teardown message and data path teardown response message;

Or,

The data path releases the acknowledgement message.

The method for providing a differentiated service in a communication network according to claim 7, wherein the transmitting the data path message including the session identifier information specifically includes:

In the communication network, when it is required to release the data communication used by the session, the service access service network gateway, the anchor access service network gateway or the base station sends a release data path message containing the session identification information;

11. The method for implementing a differentiated service in a communication network according to claim 7, wherein when said data path setup message and data path teardown message are in a service access service network gateway and an anchor access service network gateway When the interaction occurs, the service access service network gateway or the anchor access service network gateway initiates, and different data path establishment messages or data path teardown messages may be initiated according to different sessions.

12. The method for implementing a differentiated service in a communication network according to claim 11, wherein when said data path setup message and data path teardown message are in a service access service network gateway and an anchor access service network gateway When interacting, the corresponding application scenarios include: When non-handover, the session or service flow must access the service network gateway through the anchor; and when switching, the new service must be allowed to access the service network gateway and the anchor access service network. Multiple data paths are established between gateways based on sessions or service flows.

13. The method for providing a differentiated service in a communication network according to claim 7, wherein the communication network comprises:

Microwave access to the global interoperability WiMax system network, or wireless network, or wired transmission network.

The method for implementing a differentiated service in a communication network according to any one of claims 1 to 6, wherein each of the network entities releases the corresponding session according to the session identification information in the received release data path message. The data path includes:

The network entity receives the release data path message, and obtains the session identification information therein, and releases the data path of the corresponding session according to the session identification information;

Or,

The network entity receives the release data path message, and obtains the data path index information therein, according to the number According to the access cable I release the corresponding data path.

A method for providing a differentiated service in a communication network, comprising: - in a communication network, when a data path needs to be established for a session, transmitting a data path setup message including session identification information;

Each network entity establishes a corresponding data path for the session according to the session identification information in the received data path setup message.

The method for providing a differentiated service in a communication network according to claim 15, wherein the session identification information is session identification information of at least one session of the user terminal, or all sessions of the user terminal Instructions.

The method for providing a differentiated service in a communication network according to claim 15, wherein the data path setup message further includes QoS parameter information, and is established according to the QoS parameter information. Corresponding data path; and when QoS parameter information has been obtained, the message in this flow does not need to carry QoS parameter information.

18. The method for implementing a differentiated service in a communication network according to claim 15, 16 or 17, wherein said data path setup message comprises - a data path setup request message, a data path setup response message, and data Path establishment confirmation message.

The method for implementing a differentiated service in a communication network according to claim 15, 16 or 17, wherein the network entity comprises: a service access service network gateway, an anchor access service network gateway, and a base station .