WO2007022716A1 - Procede et systeme de reglage de la caracteristique de liaison de donnees a interface interne dans un reseau a acces sans fil - Google Patents

Procede et systeme de reglage de la caracteristique de liaison de donnees a interface interne dans un reseau a acces sans fil Download PDF

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Publication number
WO2007022716A1
WO2007022716A1 PCT/CN2006/002149 CN2006002149W WO2007022716A1 WO 2007022716 A1 WO2007022716 A1 WO 2007022716A1 CN 2006002149 W CN2006002149 W CN 2006002149W WO 2007022716 A1 WO2007022716 A1 WO 2007022716A1
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WIPO (PCT)
Prior art keywords
data path
asn
service
serving
information
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PCT/CN2006/002149
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English (en)
Chinese (zh)
Inventor
Jianjun Wu
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Huawei Technologies Co., Ltd.
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Publication of WO2007022716A1 publication Critical patent/WO2007022716A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/20—Negotiating bandwidth

Definitions

  • the present invention relates to the field of communications, and in particular, to a method and system for adjusting the characteristics of an internal interface data path in a radio access network. Background technique
  • Wireless systems such as (GPRS), third-generation mobile communication systems (3G), microwave access global interoperability (WiMAX), and post-3G (B3G) have received a lot of applications and attention.
  • GPRS third-generation mobile communication systems
  • 3G third-generation mobile communication systems
  • WiMAX microwave access global interoperability
  • B3G post-3G
  • the radio access network mainly performs the function of packet service forwarding or routing between the service providing network and the mobile user. Regardless of other internal devices in the access network, we will use the WiMAX network architecture shown in Figure 1 in the subsequent description of the technology (the techniques provided by the present invention include, but are not limited to, applications in WiMAX systems). The functions of each network element in Figure 1 are explained as follows:
  • ASN Access Service Network
  • the ASN is defined as a set of network functions that provide wireless access services for WiMAX terminals.
  • the ASN includes base stations (BSs) and access service network gateways (ASN-GW) network elements.
  • BSs base stations
  • ASN-GW access service network gateways
  • ASN mainly provides the following functions:
  • L2 Layer 2 connectivity for BS and Mobile Subscriber Station (MSS)
  • ASN-GW features:
  • L3 information relay (such as IP address allocation) for MSS - Radio Resource Management
  • CSN Connection Service Network
  • MSS The MSS is a mobile user equipment that the user uses to access the WiMAX network.
  • the downlink MSS packet service datagram is transmitted from the HA of the CSN to the ASN through the R interface between the HA and the ASN-GW (referred to as the anchor ASN-GW) in the ASN, and is anchored by the anchor.
  • the ASN-GW sends the MSS data to the MSS through the R6 interface between the ASN-GW and the BS 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 (referred to as the serving ASN-GW) of the serving BS that controls the MSS access, the packet service datagram of the downlink MSS passes the HA and the ASN from the HA of the CSN.
  • the 3 interface between the ASN-GWs is transmitted to the ASN, and the ASN-GW passes through the R4 interface between the ASN internal ASN-GW and the ASN-GW, and the R6 interface and service between the ASN-GW and the serving BS.
  • the R1 interface between the BS and the MSS transmits the MSS data to the MSS.
  • the upstream data is passed from the MSS to the CSN along the opposite path and reaches the peer user.
  • QoS quality of service
  • dynamic traffic characteristics such as bandwidth, delay requirements, jitter, and service flow identification, data
  • the change of the characteristics of the path itself, etc. requires adjustment of the corresponding data path characteristics on the internal interface of the ASN (including the characteristics of the data path itself and the support for the change of the characteristics of the traffic flow it carries).
  • 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-GWs.
  • Data Path Establishment BS ⁇ -> ASN GW; MSS identifier, a set of ⁇ session identifiers, number of requests (data path establishment, channel information, used to identify the industry)
  • Data Path Establishment - REQ is used to establish a set of one-way MSS service path, which is used to notify the receiving end of the message after receiving the packet datagram of the identified MSS session (identified according to the classification information of the service flow) The datagram is forwarded to the sender of this message according to the specified path.
  • 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 Establishment-Response message that the packet of the identified MSS session is received.
  • the datagram (identified by the classification information of the traffic flow) is forwarded to the sender of the message according to the specified path.
  • the Data Path Establishment Ack message is used to confirm the completion of the entire data path establishment process, and the message contains the established session identifier.
  • Data Path Release_REQ is used to release a set of one-way MSS service paths.
  • the Data Path Release Response is used to release a set of reverse MSS service paths after receiving the data path release request.
  • the prior art only provides a mechanism for establishing and releasing a data path.
  • the prior art can only release the corresponding data path on the internal interface of the ASN, and then The data path is re-established based on the new traffic flow characteristics.
  • This method is ok, the message interaction increases, and the release of the data path cannot be established.
  • the indication is a modification of the same service. This service will be misunderstood by the internal ASN BS or ASN-GW to become the end of one service and the addition of another new service. The data channel is released and the gap is established. Interrupt and datagram loss. Summary of the invention
  • the present invention provides a method and system for adjusting data path characteristics within an ASN without interrupting traffic when service flow characteristics are changed.
  • the service interruption and the datagram loss occur.
  • the method of the invention comprises:
  • a method for adjusting an internal interface data path characteristic in a radio access network includes the following steps: The user terminal initiates dynamic service flow modification request information to the serving base station BS, and carries dynamic service flow information that needs to be modified;
  • the service BS notifies the service access service network gateway that the ASN-GW requests to modify the first data path, and carries the first data path information that needs to be modified in the first data path modification request;
  • the service ASN-GW selects the modified data path according to the first data path information that needs to be modified, and sends the relevant response information.
  • the method further includes:
  • the service ASN-GW notifies the anchor ASN-GW to request to modify the second data path, and carries the second data path information that needs to be modified in the second data path modification request;
  • the anchor ASN-GW selects the modified data path according to the second data path information that needs to be modified, and sends the relevant response information.
  • the anchor ASN-GW sends the second data to the serving ASN-GW according to the second data path information that needs to be modified, selects the modified data path, and sends the relevant response information in the step, the anchor ASN-GW sends the second data to the serving ASN-GW.
  • the path modification response message carries the second data path information and the result requested to be modified.
  • the method further includes the steps of:
  • the serving ASN-GW sends a first data path modification response message to the serving BS, carrying the request Modified second data path information and results;
  • the serving BS sends a dynamic service flow modification response message to the user terminal, and carries the dynamic service flow modification request result.
  • the method further includes the steps of:
  • the user terminal sends an acknowledgement message to the service BS;
  • the serving BS sends a first data path modification acknowledgement message to the serving ASN-GW;
  • the service ASN-GW modifies the acknowledgement message to the anchor ASN-GW second data path.
  • the service BS notifies the service ASN-GW to request to modify the first data path in the step of modifying the first data path, and the service BS can satisfy part or all of the data path corresponding to the dynamic service flow modification request of the user terminal.
  • the serving BS notifies the service ASN-GW to request to modify the first data path, and further includes the serving BS determining whether it can satisfy the dynamic service flow modification request of the user terminal, and if yes, entering the service ASN-GW according to the The first data path information to be modified, the modified data path is selected, and the relevant response information step is sent, otherwise, the reject dynamic service flow modification message is sent to the user terminal.
  • the serving ASN-GW notifies the anchor ASN-GW to request the modification of the second data path, and the second data path that needs to be modified is that the service ASN-GW can satisfy the corresponding part of the first data path that the service BS needs to modify. Or all data paths.
  • the serving ASN-GW notifies the anchor ASN-GW to request to modify the second data path, and further includes the serving ASN-GW determining whether it can satisfy the first data path modification request of the serving BS, and if so, the anchor ASN-GW is configured according to The second data path information to be modified, the modified data path is selected, and the related response information is sent, otherwise the first data path modification message is rejected from the serving BS.
  • the step of the serving BS notifying the service ASN-GW requesting to modify the first data path further includes: after receiving the dynamic service flow modification request, the serving BS queries the resource management logical network element to obtain data path information that can be accepted for modification.
  • the serving BS notifies the service ASN-GW to request modification of the first data path step and service
  • the ASN-GW notifies the anchor ASN-GW to request to modify the first and second data path information in the second data path, and includes one or more session identifiers of the service flow to be modified and parameters to be modified.
  • a method for adjusting an internal interface data path characteristic in a radio access network includes the following steps: The service ASN-GW sends a first data path modification request to the serving BS, and carries the first data path modification information;
  • the service BS sends a dynamic service flow modification request to the user terminal, and carries the service flow that needs to be modified.
  • the user terminal modifies the corresponding service flow according to the service flow information that needs to be modified, and returns a dynamic service flow modification response message.
  • the method further includes:
  • the anchor ASN-GW sends a second data path modification request to the serving ASN-GW, carrying the second data path modification information.
  • the method further includes the steps of:
  • the serving BS sends a first data path modification response message to the service ASN-GW, carrying the first data path information and the result requested to be modified;
  • the service ASN-GW sends a second data path modification response message to the anchor ASN-GW, carrying the first data path information and the result requested for modification.
  • the method further includes the steps of:
  • the anchor ASN-GW sends a second data path modification acknowledgement message to the serving ASN-GW; the service ASN-GW sends a first data path modification acknowledgement message to the serving BS;
  • the serving BS sends a dynamic service flow modification confirmation message to the user terminal.
  • the first data path that needs to be modified in the step of the service ASN-GW sending the first data path modification request to the serving BS is that the serving ASN-GW can meet the second data path that needs to be modified by the anchor ASN-GW. Part or all of the data path.
  • the service ASN-GW sends a first data path modification request to the serving BS, and further includes The service ASN-GW determines whether it can satisfy the second data path modification request of the anchor ASN-GW. If it can be satisfied, the serving BS sends a dynamic service flow modification request to the user terminal, otherwise sends the reject data to the anchor ASN-GW. Path modification message.
  • the first data path that needs to be modified in the step of the service BS transmitting the dynamic service flow modification request to the user terminal is that the service BS can satisfy some or all of the data paths corresponding to the service ASN-GW dynamic service flow modification request.
  • the step of the serving BS transmitting the dynamic service flow modification request to the user terminal further comprising: determining, by the serving BS, whether the dynamic service flow modification request of the service ASN-GW can be satisfied, and if yes, the user terminal is modified according to the need Traffic flow information, modify the corresponding service flow, otherwise send a reject dynamic service flow modification message to the service ASN-GW.
  • the first and second data path information included in the step of the service ASN-GW transmitting the first data path modification request to the serving BS and the step of the service BS transmitting the dynamic service flow modification request to the user terminal where the one or more data path information includes one or more The session ID of the service flow that needs to be modified and the parameters that need to be modified.
  • the anchor ASN-GW sends a second data path modification request step to the serving ASN-GW, and further includes the steps of:
  • the anchor ASN-GW queries the resource management logical network element to obtain a data path letter that can be accepted for modification.
  • the system of the present invention includes:
  • a wireless access system comprising a user terminal, a service BS for accessing a user terminal, and a service providing a data path ASN-GW,
  • the user terminal is configured with a dynamic service flow modification request sending unit, configured to send a dynamic service flow modification request to the service BS, and carry dynamic service flow information that needs to be modified;
  • the service 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, carrying the first data path information that needs to be modified.
  • the system further includes an anchor ASN-GW providing a data path;
  • the service ASN-GW is configured with a second data path modification request sending unit, configured to send a second data path modification request to the anchor ASN-GW, and carry the second data path information that needs to be modified.
  • the system further includes a resource management logic network element, and stores network resource information, which accepts query information sent by the serving BS or the anchor ASN-GW, and returns a query result.
  • a wireless access system includes a service BS for user terminal access and a service ASN-GW for providing data access,
  • the service ASN-GW is provided with a first data path modification request sending unit, configured to send a first data path modification request to the service BS, and carry the first data path modification information;
  • the service BS is configured with a dynamic service flow modification request sending unit, configured to send a dynamic service flow modification request to the user terminal, and carry the service flow information that needs to be modified.
  • the system further includes an anchor ASN-GW providing a data path,
  • the anchor 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 ASN-GW, carrying the second data path modification information.
  • the system further includes a resource management logic network element, and stores network resource information, which accepts query information sent by the service BS or the anchor ASN-GW, and returns the query result.
  • the solution of the invention solves the problem of adjusting the data path of the dynamic service flow without interrupting the service flow when the service flow characteristics are adjusted.
  • the solution is simple and easy to implement.
  • FIG. 1 is a schematic structural diagram of a WiMAX network architecture in the prior art
  • Figure 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. 5 is a schematic structural diagram of a system corresponding to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic structural diagram of a system corresponding to the first embodiment of the present invention.
  • 9 is a schematic structural diagram of a system corresponding to the second solution of the present invention.
  • 10 is a schematic flow chart of the third embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a system corresponding to the third solution of the present invention.
  • FIG. 13 is a schematic structural diagram of a system corresponding to the fourth embodiment of the present invention. detailed description
  • the mobile terminal may be a mobile station (MS) or a mobile subscriber station (MSS).
  • MS mobile station
  • MSS mobile subscriber station
  • the MSS is taken as an example for description.
  • Solution 1 For the service flow feature adjustment processing method initiated by the MSS side (there are multiple data paths):
  • FIG. 4 it is a schematic flowchart of the first solution of the present invention. It can be seen from the figure that the following steps are included:
  • the MSS initiates a dynamic service flow modification request message (DSC-REQ) to the serving BS, where the dynamic service flow modification request message (DSC-REQ) carries the dynamic service flow information that needs to be modified; the service BS sends the dynamic message.
  • the service flow modifies the received message (DSC-RVD) to the MSS, indicating that the serving BS has received the request message. If the service BS determines that the modification request of the MSS cannot be satisfied, then execute S12; otherwise, execute S13;
  • the serving BS directly sends a response message (DSC-RSP) to the MSS, indicating that the dynamic service flow modification message is rejected.
  • the MSS sends a confirmation message (DSC-ACK) message to the serving BS.
  • the serving BS notifies the service ASN-GW via a Data Path Modification Ack.
  • the service ASN-GW decides that all modification requests are rejected, the entire process ends here. Otherwise, the monthly service ASN-GW notifies the anchor ASN-GW through the Data Path Modification Ack, and the whole process ends here.
  • the data path modification request message (Data Path Modification Request) is sent to the service ASN-GW, where the message includes the session identifier of the service flow that needs to be modified, and needs to be
  • the modified parameters and other information of the data path that may be modified, which information indicates that the service BS determines which path modification request information can be satisfied. It is used to apply for modifying the downlink (from the service ASN-GW to the service BS) data path between the service BS and the service ASN-GW, and also includes the information of the uplink data channel that needs to be modified.
  • the service ASN-GW determines whether the MSS modification request is met according to the resource situation and the request requirement. If all the session requirements are not met, then in the Data Path Modification Response message to the serving BS. Indicates that all modification requests are rejected, execute S12, otherwise continue.
  • the serving ASN-GW selects a session that can satisfy the path modification request and corresponding path information and classification information (these information explicitly includes those path modification request information that the service ASN-GW determines can satisfy) to modify the request message through the data path.
  • (Data Path Modification Request) is sent to the anchor ASN-GW to apply for modifying the downlink (from the anchor ASN-GW to the service ASN-GW) data path between the serving ASN-GW and the anchor ASN-GW, and also includes the need The information of the modified upstream data channel.
  • the anchor ASN-GW determines whether the MSS modification request is satisfied according to the resource situation and the request requirement. If all the session requirements are not met, then S16 is performed; otherwise, the anchor ASN-GW performs a data path modification response message to the serving ASN-GW.
  • Data Path Modification Response indicates that the modified session identifier, the downlink data path modification information and the result, and the information of the uplink (from the serving ASN-GW to the anchor ASN-GW) data path can be accepted, and the service ASN-GW receives the cancellation.
  • the data path Modification Response to the serving BS indicates that the modified session identifier, the downlink data path modification information and the result, and the uplink (from the serving BS) are accepted.
  • the service ASN-GW execute S17.
  • the serving 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 a confirmation message (DSC-ACK) to the serving BS.
  • the serving BS notifies the service ASN-GW of the successfully confirmed session service flow identifier according to the success/failure confirmation message through the data path modification acknowledgement message (Data Path Modification Ack), and the service ASN-GW modifies the acknowledgement message through the data path (Data Path Modification) Ack) Notifies the anchor ASN-GW that the entire process has ended.
  • the data path may have multiple granularities, which may include based on BS granularity, based on MSS granularity, and based on service flow granularity and the like.
  • the service BS, the service ASN-GW, and the anchor ASN-GW all have the capability of determining their own resources. Therefore, after receiving the related message sent by the previous network element, the capability judgment can be performed, and the resource is consistent with its own resources. The modification request is sent to the next network element, and the modification request that does not meet its own capabilities is rejected.
  • the serving BS After the serving BS receives the dynamic service flow modification request information sent by the MSS, the service BS obtains a data path that agrees to request the modification by interacting with a resource management logical network element. The request is then sent to the serving ASN-GW and the anchor ASN-GW, in which case the request is accepted, (because the unaccepted request can be clarified when the serving BS and the resource management logical network element interact, without using Re-issued to the service ASN-GW and anchor ASN-GW).
  • This solution simplifies the process.
  • Embodiment 1 is a specific implementation of the first solution. As shown in FIG. 5, it is a schematic flowchart of Embodiment 1 of the present invention. As can be seen from the figure, the present invention mainly includes the following steps:
  • the MSS initiates a dynamic service flow modification request message (DSC-REQ) to the serving BS.
  • DSC-REQ dynamic service flow modification request message
  • the serving BS sends a dynamic service flow modification receiving message (DSC-RVD) to the MSS, indicating that the serving BS has received the request message.
  • DSC-RVD dynamic service flow modification receiving message
  • the service BS determines that the modification request of the MSS can be met, and then sends a data path modification request message (Data Path Modification Request) to the service ASN-GW, where the message includes the session identifier of the service flow that needs to be modified, and parameters that need to be modified. Additional information about the data path that may be modified. Used to apply for modifying the downlink (from the service ASN-GW to the service BS) data path between the serving BS and the serving ASN-GW. This embodiment assumes that a certain downlink data channel characteristic is modified.
  • Data Path Modification Request data path modification request message
  • Service ASN-GW judges the repair of the MSS according to the resource situation and the requirements of the request.
  • the request is sent to the anchor ASN-GW through a Data Path Modification Request to apply for modification of the downlink between the serving ASN-GW and the anchor ASN-GW (from the anchor ASN-GW to the service ASN- GW) data path.
  • the anchor ASN-GW determines that the modification request of the MSS is satisfied according to the resource situation and the request requirement, and the anchor ASN-GW indicates that the modified session can be accepted in the Data Path Modification Response message to the serving ASN-GW.
  • the serving ASN-GW After receiving the message, the serving ASN-GW indicates, according to the acceptance information of the anchor ASN-GW, that the modified session identifier is accepted in the Data Path Modification Response message to the serving BS, and the downlink (from the anchor ASN) -GW to service ASN-GW) Data path modification results.
  • the serving BS directly sends a response message (DSC-RSP) to the MSS, indicating that the corresponding dynamic service flow modification request is successful.
  • DSC-RSP response message
  • the MSS sends an acknowledgement message (DSC-ACK) to the serving BS to notify the service BS that the adjustment is successful.
  • DSC-ACK acknowledgement message
  • the modification content takes effect.
  • the service BS modifies the acknowledgement message through the data path (Data Path Modification Ack)
  • the notification service ASN-GW, the modification content takes effect on the service ASN-GW.
  • the service ASN-GW notifies the anchor ASN-GW through the Data Path Modification Ack, and the modification content is valid on the anchor ASN-GW, and the entire process ends.
  • FIG. 6 it is a schematic diagram of a system structure based on the first solution of the present invention.
  • the system structure mainly includes an MSS, a service BS for MSS access, a service ASN-GW for providing data path, and an anchor ASN- GW;
  • the MSS is configured with a dynamic service flow modification request sending unit, configured to send a dynamic service flow modification request to the serving BS, and carry the dynamic service flow information that needs to be modified;
  • the service BS is configured with a first data path modification request sending unit, configured to send a first data path modification request to the service ASN-GW, and carry a first data path that needs to be modified
  • the service ASN-GW is configured with a first And a second data path modification request sending unit, configured to send a second data path modification request to the anchor ASN-GW, and carry the second data path information that needs to be modified.
  • the resource management logic network element stores network resource information, which accepts query information sent by the service BS, and returns the query result.
  • Solution 2 The method for adjusting the characteristics of the service flow initiated by the network side (there are multiple data paths)
  • the anchor ASN-GW initiates a data path modification request message (Data Path Modification Request) to the serving ASN-GW. If the service ASN-GW determines that the modification request of the anchor ASN-GW cannot be satisfied, then S22 is performed, otherwise S23 is performed.
  • Data Path Modification Request Data Path Modification Request
  • the service ASN-GW directly sends a data path modification response message (Data Path Modification Response) to the anchor ASN-GW to indicate 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 Ack to the serving ASN-GW. If the service ASN-GW decides that all modification requests are rejected, the entire process ends. Otherwise, the service ASN-GW notifies the service BS through the Data Path Modification Ack, and if the service BS decision determines that all modification requests are rejected, the entire process ends here.
  • the serving ASN-GW determines that part or all of the modification request of the anchor ASN-GW can be met, then initiate a data path modification request message (Data Path Modification Request) to the serving BS, where the message includes the service flow that needs to be modified. Session identifier, parameters that need to be modified, and other information about the data path that may be modified. These information contain those path modification request information that the service ASN-GW determines to be satisfied, and are also used to apply for modification between the service BS and the service ASN-GW.
  • the upstream (from the serving BS to the serving ASN-GW) data path.
  • the serving BS determines, according to the resource situation and the request request, whether the modification request of the service ASN-GW is met. If the requirements of all the sessions are not met, the data path modification response message is sent to the serving ASN-GW (Data Path Modification). In Response, all the modification requests are rejected, and S22 is executed, otherwise it continues, and the information of the downlink data channel to be modified is also included.
  • Data Path Modification Data Path Modification
  • the serving BS sends a dynamic service flow modification request message (DSC-REQ to the MSS) according to the identifier of each service flow that needs to be modified and the serving BS's own resources can be modified in the received Data Path Modification Request. ).
  • DSC-REQ dynamic service flow modification request message
  • requests for modification of all traffic flows can be carried in a DSC-REQ message.
  • a DSC-REQ message can only modify one service flow, then the number and needs of DSC-REQ The number of business flows to be modified is the same.
  • the serving BS will receive one or more Dynamic Service Flow Modification Response Messages (DSC-RSPs) to indicate the success/failure of dynamic service flow modification at the MSS side.
  • DSC-RSPs Dynamic Service Flow Modification Response Messages
  • the data path Modification Response in the service ASN-GW indicates that the modified session identifier can be successfully accepted, and the uplink data path is adopted. Modifying information and results, and downlink (from the service ASN-GW to the serving BS) data path information, the service ASN-GW receives the message and then modifies the response to the data path of the anchor ASN-GW according to the received information of the serving BS. A message indicating that the modified session identifier, the upstream data path modification information and the result, and the downlink (from the anchor ASN-GW to the service ASN-GW) data path are indicated in the message (Data Path Modification Response)
  • the anchor ASN-GW notifies the service ASN-GW by using a Data Path Modification Ack, and the service ASN-GW notifies the service BS by using a Data Path Modification Ack, and the last of these messages is confirmed.
  • the data path modification on the network element is valid only after receiving the message.
  • the serving BS sends a confirmation message (DSC-ACK) of successful dynamic service flow modification to the MSS according to the identifier of each service flow confirmed in the received Data Path Modification Ack message, for other MSSs.
  • DSC-ACK acknowledgement message
  • the total number of confirmed service flows must be the same as the number of service flows corresponding to the Request Modification Response (DSC-RSP) message sent by the MSS.
  • DSC-RSP Request Modification Response
  • all traffic changes can be carried in a DSC-ACK message.
  • the air interface interface between the MSS and the serving BS
  • DSC-RSP application modification response
  • the serving BS and the serving ASN-GW all have the capability of judging their own resources. Therefore, after receiving the related message sent by the previous network element, the capability judgment can be performed, and the modification request matching the own resource is sent to the next. A network element rejects a modification request that does not meet its capabilities.
  • Another method for judging its own resources can also be adopted in the scheme, that is, at the anchor ASN-GW.
  • a resource management logical network element After interacting with a resource management logical network element, obtaining a data path that agrees to request modification, and then sending a request to the serving ASN-GW and the serving BS, in which case the request is accepted (because it is not accepted)
  • the anchor ASN-GW interacts with the resource management logic network element, it can be clarified without being sent to the service ASN-GW and the service BS.
  • the program can streamline the process.
  • Embodiment 2 Adjusting multiple service flow characteristics initiated by the network side
  • Embodiment 2 is a specific implementation of the second solution. As shown in FIG. 8, it is a schematic flowchart of Embodiment 2 of the present invention. As can be seen from the figure, the present invention mainly includes the following steps:
  • the anchor ASN-GW initiates a data path modification request message (Data Path Modification Request) to the serving ASN-GW, where the message includes feature modification of multiple session service flows.
  • Data Path Modification Request a data path modification request message
  • the service ASN-GW determines that the modification request of the anchor ASN-GW can be met, and then sends a data path modification request message (Data Path Modification Request) to the service BS, where the message includes the session identifier of the service flow to be modified, and needs to be modified.
  • Data Path Modification Request a data path modification request message
  • the parameters and other information of the data path that may be modified are used to apply for modifying the uplink (from the serving BS to the serving ASN-GW) data path between the serving BS and the serving ASN-GW, and also includes the downlink data channel to be modified. information.
  • the service BS determines, according to the resource situation and the request requirement, that the service BS can satisfy the modification request of the service ASN-GW; and the service BS needs to modify according to the received data path modification request message (Data Path Modification Request) message.
  • the identity of the traffic flow in turn sends a dynamic traffic flow modification request message (DSC-REQ) to the MSS.
  • DSC-REQ dynamic traffic flow modification request message
  • a DSC-REQ message can only modify one service flow, then the number of DSC-REQs is the same as the number of service flows that need to be modified.
  • the serving BS will receive a plurality of Dynamic Service Flow Modification Response Messages (DSC-RES) to indicate the success/failure of dynamic service flow modification at the MSS side.
  • the serving BS may initiate the DSC-REQ 0 for the next service flow after receiving the response DSC-RSP of the previous DSC-REQ, or may issue multiple DSC-REQs in parallel without waiting for the response of
  • the serving BS After the serving BS receives the response message of the MSS to all service flows that need to be modified, the data path modification response message (Data Path Modification) is sent to the serving ASN-GW.
  • the Response indicates that the modified session identifier, the upstream data path modification information and the result, and the downlink (from the serving ASN-GW to the serving BS) data path can be successfully accepted.
  • the serving ASN-GW After receiving the message, the serving ASN-GW indicates, according to the receiving information of the serving BS, the session identifier that can be accepted in the data path modification response message (Data Path Modification Response) to the anchor ASN-GW, and the uplink data path modification information. And the result, and the downlink (from the anchor ASN-GW to the service ASN-GW) data path information. All modifications begin to take effect on the anchor ASN-GW.
  • Data Path Modification Response data path modification response message
  • the anchor ASN-GW notifies the service ASN-GW through a Data Path Modification Ack, and the modification takes effect on the service ASN-GW.
  • the service ASN-GW notifies the service BS through a Data Path Modification Ack, which confirms the service flow information that can be successfully modified last. The modification takes effect on the service ASN-GW.
  • the serving BS sends a confirmation message (DSC-ACK) of the dynamic service flow modification success message to the MSS according to the identifier of each service flow confirmed by the acknowledgement in the received Data Path Modification Ack, for the received There is no successfully modified service flow in the DSC-REQ, and an acknowledgement message (DSC-ACK:) for the dynamic service flow modification failure is sent to the MSS.
  • DSC-ACK confirmation message
  • the number of service flows that need to be confirmed must match the number of service flows modified by the MSS.
  • a 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 messages (DSC-RSP) sent by the MSS.
  • information about the data path carrying the service flow may be included: classification information of the service flow, identification information of the data path, QoS of the service flow, etc.
  • the content may include uplink Data path information, or downlink data path information, or uplink and downlink path information.
  • the adjustment information of the data path may include bandwidth, delay requirement, jitter, and 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.
  • the network element determines whether to modify the number of channels associated with itself according to its processing power and corresponding resource usage.
  • FIG. 9 it is a schematic diagram of a system structure corresponding to the second solution of the present invention.
  • the system structure mainly includes an MSS, a service BS for MSS access, a service ASN-GW for providing a data path, and an anchor ASN. -GW.
  • 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, carrying the first data path modification information;
  • the service 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, carrying the second data path modification information;
  • the service BS is configured with a dynamic service flow modification request sending unit, configured to send a dynamic service flow modification request to the MSS, and carry the service flow information that needs to be modified.
  • the system further includes a resource management logic network element, and stores network resource information, which accepts query information sent by the anchor ASN-GW, and returns a query result.
  • Solution 3 For the service flow characteristic adjustment processing method initiated by the MSS side (only one data path exists)
  • FIG. 10 it is a schematic flowchart of the first solution of the present invention. It can be seen from the figure that the following steps are included:
  • the MSS initiates a dynamic service flow modification request message (DSC-REQ) to the serving BS, where the dynamic service flow modification request message (DSC-REQ) carries the dynamic service flow information that needs to be modified; the service BS sends the dynamic information.
  • the service flow modifies the received message (DSC-RVD) to the MSS, indicating that the serving BS has received the request message. If the service BS determines that the modification request of the MSS cannot be satisfied, then execute S32, otherwise execute S33;
  • the serving BS directly sends a response message (DSC-RSP) to the MSS, indicating that the dynamic service flow modification message is rejected.
  • the MSS sends a confirmation message (DSC-ACK) message to the serving BS.
  • the serving BS notifies the service ASN-GW via a Data Path Modification Ack. If the service ASN-GW decision determines that all modification requests are rejected, the entire process ends here.
  • the serving BS determines that part or all of the modification request of the MSS can be met, then the data path modification request message (Data Path Modification Request) is sent to the service ASN-GW, where the message includes the session identifier of the service flow that needs to be modified, and needs to be The modified parameters and other information of the data path that may be modified, which clarifies those path modification request information that the serving BS determines can satisfy. It is used to apply for modifying the downlink (from the service ASN-GW to the service BS) data path between the service BS and the service ASN-GW, and also includes the information of the uplink data channel that needs to be modified.
  • Data Path Modification Request Data Path Modification Request
  • the service ASN-GW determines whether the MSS modification request is satisfied according to the resource situation and the request requirement. If all the session requirements are not met, then in the Data Path Modification Response message to the serving BS. Indicates that all modification requests are rejected, execute S32, otherwise continue.
  • the serving ASN-GW indicates, in the Data Path Modification Response to the serving BS, that the modified session identifier, the downlink data path modification information and the result, and the uplink (from the serving ASN-GW to the anchor ASN) are accepted.
  • -GW Information on the data path.
  • the service ASN-GW instructs all the modification requests to be rejected in the Data Path Modification Response message to the serving BS, and executes S32.
  • the serving 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 a confirmation message (DSC-ACK) to the serving BS.
  • the serving BS notifies the service ASN-GW of the successfully confirmed session service flow identifier through the Data Path Modification Ack according to the success/failure confirmation message.
  • the serving BS and the serving ASN-GW all have the capability of judging their own resources. Therefore, after receiving the related message sent by the previous network element, the capability judgment can be performed, and the modification request matching the own resource is sent to the next. A network element rejects a modification request that does not meet its capabilities.
  • the method may also adopt another method for judging the self-resource, that is, after the serving BS receives the dynamic service flow modification request information sent by the MSS, and interacts with a resource management late network element. Obtain the data path that agrees to request the modification, and then send the request to the service ASN-GW. In this case, the request will be accepted. (Because the unaccepted request is in the interaction between the service BS and the resource management late network element. Be able to be clear without having to send it to the service ASN-GW). This solution simplifies the process.
  • FIG. 11 it is a schematic diagram of a system structure corresponding to the solution 3 of the present invention.
  • the system structure mainly includes an MSS, a service BS for MSS access, and a service ASN-GW for providing a data path.
  • the MSS is configured with a dynamic service flow modification request sending unit, configured to send a dynamic service flow modification request to the serving BS, and carry the dynamic service flow information that needs to be modified;
  • the service BS is provided with a first data path modification request sending unit, configured to send a data path modification request to the service ASN-GW, carrying the first data path information that needs to be modified.
  • the system further includes a resource management logic network element, and stores network resource information, which accepts query information sent by the service BS, and returns a query result.
  • Solution 4 The method for adjusting the characteristics of the service flow initiated by the network side (there is a data channel)
  • the serving ASN-GW initiates a Data Path Modification Request message to the serving BS, where the message includes a session identifier of the service flow to be modified, parameters to be modified, and other information of the data path that may be modified.
  • the information includes those path modification request information that the service ASN-GW determines to be satisfied, and is also used to apply for modifying the uplink (from the service BS to the service ASN-GW) data path between the serving BS and the serving ASN-GW.
  • the serving BS determines, according to the resource situation and the request request, whether the modification request of the service ASN-GW is met. If the requirements of all the sessions are not met, the data path modification response message is sent to the serving ASN-GW (Data Path Modification). In Response, all the modification requests are rejected, and S43 is executed, otherwise it continues, and also includes the downlink data channel to be modified. Information.
  • the serving BS sends a Data Path Modification Response message to the serving ASN-GW, where all the modification requests are rejected.
  • the service BS sends a dynamic service flow modification request message (DSC-REQ) to the MSS according to the identifier of each service flow that needs to be modified and the service BS's own resources can be modified according to the received Data Path Modification Request. ).
  • DSC-REQ dynamic service flow modification request message
  • requests for modification of all traffic flows can be carried in a DSC-REQ message.
  • a DSC-REQ message can only modify one service flow, and the number of DSC-REQs is the same as the number of service flows that need to be modified.
  • the serving BS will receive one or more Dynamic Service Flow Modification Response Messages (DSC-RSPs) to indicate the success/failure of the dynamic traffic flow modification at the MSS side.
  • DSC-RSPs Dynamic Service Flow Modification Response Messages
  • the data path Modification Response in the service ASN-GW indicates that the modified session identifier can be successfully accepted, and the uplink data path is adopted. Modify information and results, as well as information on the downstream (from the service ASN-GW to the serving BS) data path.
  • the service ASN-GW notifies the service BS through a Data Path Modification Ack, which confirms the service flow information that can be successfully modified last.
  • the data path modification on the network element is valid only after receiving the message.
  • the serving BS sends a confirmation message (DSC-ACK) of successful dynamic service flow modification to the MSS according to the identifier of each service flow confirmed by the confirmation in the received Data Path Modification Ack message, which is sent by other MSSs.
  • DSC-ACK confirmation message
  • an acknowledgement message (DSC-ACK) of the dynamic service flow modification failure is sent to the MSS.
  • the total number of confirmed service flows must be the same as the number of service flows corresponding to the Request Modification Response (DSC-RSP) message sent by the MSS.
  • DSC-RSP Request Modification Response
  • all traffic changes can be carried in a DSC-ACK message.
  • the air interface interface between the MSS and the serving BS
  • DSC-RSP application change response
  • the serving BS has the ability to judge its own resources, and therefore receives the previous network element. After the related message is sent, the capability judgment can be performed, and the modification request that meets its own resource is sent to the next network element, and the modification request that does not meet its own capability is rejected.
  • FIG. 13 it is a schematic diagram of a system structure corresponding to the scheme 4 of the present invention.
  • the system structure mainly includes an MSS, a service BS for MSS access, and a service ASN-GW that provides a data path,
  • the invention made some changes on the above network elements:
  • the service ASN-GW is provided with a first data path modification request sending unit, configured to send a first data path modification request to the service BS, and carry the first data path modification information;
  • the service BS is configured with a dynamic service flow modification request sending unit, configured to send a dynamic service flow modification request to the MSS, and carry the service flow information that needs to be modified.
  • the resource management logic network element is further included, and the network resource information is stored, and the query information sent by the service BS is received, and the query result is returned.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

Ce procédé et ce système de réglage de la caractéristique de la liaison de données à interface interne dans un réseau d'accès sans fil consistent à lancer un message de demande par le terminal abonné d'une modification d'écoulement de service dynamique vers une station de base de service BS, l'information du service nécessaire devant être modifiée; la BS de service informe la passerelle de réseau de service d'accès au service ASN-GW de la demande de modification de la première liaison de données, de manière à modifier l'information de la première liaison de données; sélectionner par le service ASN-GW la liaison de données à modifier d'après l'information de la première liaison de données et envoyer un message de réponse. Ce procédé et ce système assurent le réglage de la liaison de données de service dynamique sans interruption du service lors du réglage de la caractéristique du service.
PCT/CN2006/002149 2005-08-23 2006-08-23 Procede et systeme de reglage de la caracteristique de liaison de donnees a interface interne dans un reseau a acces sans fil WO2007022716A1 (fr)

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CN101437268B (zh) * 2007-11-14 2013-04-17 华为技术有限公司 WiMAX中QoS业务流的建立方法、装置及系统
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CN101730150B (zh) * 2009-01-19 2013-08-07 中兴通讯股份有限公司 业务流迁移时对网络资源进行控制的方法
CN102196404B (zh) * 2010-03-11 2013-09-11 电信科学技术研究院 一种发送数据的方法、系统和装置
CN102088771B (zh) 2010-03-12 2013-10-16 电信科学技术研究院 根据ue状态进行数据面通路选择的方法、系统及装置

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