CN100571061C - Implementation method for providing quality of service guarantee in wireless communication system and wireless communication system - Google Patents

Abstract

The invention relates to a method and system for realizing service quality assurance in a wireless communication system. The present invention mainly includes: firstly, defining the quality of service parameters of the lossless relocation indication in wireless communication systems such as WiMax; then, performing negotiation on the quality of service parameters including the lossless relocation indication parameters between entities in the WiMax system; and according to the negotiated QoS parameters provide QoS guarantees for corresponding business flows. The invention defines the QoS parameters of WiMax end-to-end MSS-ASN-CSN, so that WiMax can selectively perform lossless migration, thereby providing more reasonable QOS parameters for the WiMax system and improving the performance of the wireless communication system. The invention also defines the QoS negotiation process of WiMax end-to-end MSS-ASN-CSN, so that WiMax can guarantee QoS in the end-to-end MSS-ASN-CSN bearer, and provide differentiated services for WiMax users.

Description

Implementation method for providing quality of service guarantee in wireless communication system and wireless communication system

technical field

The present invention relates to the technical field of wireless communication, in particular to a method for realizing quality of service guarantee in a wireless communication system and a wireless communication system.

Background technique

In existing wireless communication systems, such as WCDMA (Wideband Code Division Multiple Access) systems and CDMA (Code Division Multiple Access) systems, different quality of service guarantees are usually provided to different users according to needs, so as to provide users with different Serve.

With the development of wireless communication technology, the WiMax (Worldwide Interoperability for Microwave Access) system has also become a new wireless broadband access technology to be studied in wireless communication systems. The WiMax system mainly includes ASN (Access Service Network), CSN (Connection Service Network) and MSS (Mobile Terminal), wherein: the ASN is used to provide a set of network functions for WiMAX terminals to provide wireless access services, so The above-mentioned ASN specifically includes BS (base station) and ASN GW (ASN gateway) network elements, and an ASN may be shared by multiple CSNs (connection service network); the CSN is used to provide IP connection services for WiMAX terminals, wherein It also includes AAA server (authentication authentication accounting server) function.

Like the WCDMA system and CDMA, the WiMax system also needs to provide users with corresponding QoS (Quality of Service) guarantees. However, the current WiMax system only defines the local information of the air interface, and the end-to-end QoS of the entire WiMax access network Both parameter and process definition are blank. That is to say, there is no definition of QoS parameters for WiMax at present, and at the same time, no corresponding processing flow is provided.

Therefore, currently, the WiMax system cannot provide different quality of service guarantees for different users, that is, it cannot provide users with different levels of quality of service.

Contents of the invention

The embodiment of the present invention provides a method and system for providing quality of service guarantee in a wireless communication system, so as to provide different quality of service guarantees for different users in a WiMax system.

An embodiment of the present invention provides a method for implementing quality of service assurance in a wireless communication system, including:

In the process of transmitting quality of service parameters in the wireless communication system, the lossless relocation indication information is transmitted as a quality of service parameter between entities in the wireless communication system;

Provide lossless migration for business flows according to the transmitted lossless migration instructions.

The wireless communication system is a wireless communication system with a lossless migration process, which is the following system:

Microwave access Worldwide Interoperability WiMax system, wideband code division multiple access system WCDMA, code division multiple access CDMA system, CDMA-2000 system or time division synchronous code division multiple access TD-SCDMA system.

In the WiMax system, the lossless migration indication information includes at least one of the following:

Whether to perform lossless migration within the access service network, whether to perform lossless migration between access service networks, whether to perform lossless migration when crossing operators within the access service network, and whether to perform lossless migration between access service networks Whether to perform lossless migration, the service flow corresponding to lossless migration, and the serial number that needs to be transmitted during lossless migration.

The embodiment of the present invention also provides a method for realizing quality of service guarantee in a WiMax wireless communication system, including: determining a quality of service parameter in the WiMax wireless communication system, the quality of service parameter including lossless relocation indication information, an expression of an air interface requirement QoS parameters and QoS parameters of upper layer business information;

Negotiating the quality of service parameters between entities in the WiMax wireless communication system;

Provide service quality assurance for business flows according to negotiated service quality parameters.

In the WiMax system, when the QoS negotiation is controlled by the access service network gateway, the negotiation of the QoS parameters between entities in the wireless communication system specifically includes:

The access service network gateway receives the service establishment request carrying quality of service parameter information sent by the mobile terminal;

The access service network gateway checks the service quality parameters of the service flow according to the signed service quality parameter information;

Under the control of the access service network gateway, the service base station of the mobile terminal and the connection service network negotiate to establish a service transmission path based on the quality of service parameters.

The establishment of a service transmission path based on quality of service parameter negotiation specifically includes:

The access service network gateway establishes a corresponding radio bearer based on the information exchange between the service quality parameters of the mobile terminal and the serving base station of the mobile terminal;

The access service network gateway also establishes a corresponding service transmission channel based on the information exchange between the mobile terminal's quality of service parameters and the connection service network.

The provision of quality of service guarantees for business flows according to the negotiated quality of service parameters specifically includes:

After the access service network gateway establishes the corresponding service transmission path, it returns a response message to the mobile terminal, and the response message carries the negotiated service quality parameter information of the mobile terminal;

Carry out corresponding services based on the service transmission path.

In the WiMax system, when the access service network gateway obtains the subscription data and the serving base station controls the service quality negotiation, the step of performing the service quality parameter negotiation between entities in the wireless communication system specifically includes:

The access service network gateway obtains the subscription service quality parameter information of the mobile terminal from the process triggered by the mobile terminal contacting the network;

The access service network gateway sends the signed service quality parameter information to the service base station;

The serving base station receives a service establishment request carrying quality of service parameter information sent by the mobile terminal;

The serving base station determines the service quality parameter of the service flow according to the contracted service quality parameter and the service quality parameter information sent by the mobile terminal;

The serving base station negotiates and establishes a corresponding service transmission path with the connecting service network based on the determined service quality parameters.

The negotiation of the quality of service parameters between entities in the wireless communication system further includes:

When the mobile terminal is handed over or its location is updated, the access service network gateway sends the service quality parameter information to the new serving base station to which the mobile terminal belongs.

The step of providing quality of service guarantee for the business flow according to the negotiated quality of service parameters specifically includes:

After the serving base station establishes the corresponding service transmission path, it returns a response message to the mobile terminal, and the response message carries the negotiated service quality parameter information of the mobile terminal;

Carry out corresponding services based on the service transmission path.

In the WiMax system, when the service base station directly obtains the subscription data, and the service base station controls the service quality negotiation, said negotiation of the service quality parameters between entities in the wireless communication system also includes:

The serving base station obtains the QoS parameters of the mobile terminal from the process triggered by the mobile terminal contacting the network;

The serving base station receives a service establishment request carrying quality of service parameter information sent by the mobile terminal;

The serving base station determines the service quality parameter of the service flow according to the contracted service quality parameter and the service quality parameter information sent by the mobile terminal;

The serving base station of the mobile terminal negotiates and establishes a corresponding service transmission path with the connecting service network based on the determined service quality parameters.

The provision of quality of service guarantees for business flows according to the negotiated quality of service parameters specifically includes:

After the serving base station establishes the corresponding service transmission path, it returns a response message to the mobile terminal, and the response message carries the negotiated service quality parameter information of the mobile terminal;

Carry out corresponding services based on the service transmission path.

An embodiment of the present invention also provides a wireless communication system, wherein the wireless communication system includes:

The access service network gateway is used to receive a service establishment request carrying quality of service parameter information sent by a mobile terminal, and determine the service quality parameter of the service according to the service quality parameter information subscribed by the mobile terminal, and the contract service quality parameter information The parameters include lossless relocation indication information, QoS parameters expressing air interface requirements, and QoS parameters of upper layer business information;

The serving base station is configured to, under the control of the access service network gateway, negotiate with the connection service network to establish a service transmission path based on the quality of service parameters determined by the access service network gateway.

It can be seen from the technical solutions provided by the above-mentioned embodiments of the present invention that the embodiments of the present invention define the QoS parameters of WiMax end-to-end MSS-ASN-CSN, so that WiMax can selectively perform lossless migration, specifically including comprehensive network complexity, Cross-operator subscription, delay and packet loss rate, user level, etc. choose whether users sign up for non-destructive migration. Therefore, a more reasonable QOS parameter is provided for the WiMax system. At the same time, the lossless migration indication parameter can also be applied to other wireless communication systems, such as WCDMA and CDMA systems, to improve the performance of the wireless communication system.

The invention also defines the QoS negotiation process of WiMax end-to-end MSS-ASN-CSN, so that WiMax can guarantee QoS in the end-to-end MSS-ASN-CSN bearer, and provide differentiated services for WiMax users.

Description of drawings

FIG. 1 is an example of a schematic structural diagram of a WiMax system in a scenario;

Fig. 2 is the flow chart that ASN GW obtains subscription data information and controls the negotiated service quality parameter among the present invention;

Fig. 3 is the flow chart of ASN GW obtaining subscription data information in the present invention, but being controlled by BS to negotiate service quality parameters;

Fig. 4 is the processing flowchart when the mobile terminal location update occurs in Fig. 3;

Fig. 5 is a processing flowchart when the mobile terminal in Fig. 3 is handed over;

FIG. 6 is a corresponding flow chart for the BS to obtain subscription data information and control and negotiate service quality parameters in the present invention.

Detailed ways

The core of the present invention is to define corresponding QoS parameters at the characteristic selection of WiMax system, and can carry out end-to-end QoS negotiation in WiMax system according to corresponding QoS parameters, namely the present invention proposes the parameters and the negotiation flow for the QoS of WiMax , wherein the defined QoS parameters also include some parameters that have not been used in the existing wireless network. The realization of the present invention enables end-to-end QoS guarantee to be realized in the WiMax system as well.

The present invention can also be applied in other wireless communication systems, such as WCDMA (Wideband Code Division Multiple Access) system, CDMA (Code Division Multiple Access) system, CDMA-2000 system, and D-SCDMA (Time Division Synchronous Code Division Multiple Access) system middle.

The parameters proposed by the present invention can be used for ASN GW, BS, MSS, and QoS end-to-end negotiation with CSN and AAAServer, and can be negotiated for each service subflow of MSS, and each service can be signed in AAA Server respectively.

The definition of the WiMax QoS parameter that the present invention proposes comprises two parts, and a part is the QoS parameter defined based on 802.16e (wireless access standard), and another part is the QoS parameter that the present invention defines specially, will describe respectively below.

First, the WiMax QoS parameters determined according to 802.16e (wireless access standard) include:

Business processing priority Traffic handling priority, the specific value is 0-7;

Maximum Sustained Traffic Rate, unit kbps;

Maximum Traffic Burst, unit Byte (byte);

Minimum Reserved Traffic Rate, unit kbps;

Tolerated jitter Tolerated Jitter;

Maximum Latency;

Maximum SDU size Maximum SDU size.

In addition, the present invention also specifically defines the following WiMax QoS parameters:

User priority User priority;

SDU error rate SDU error ratio;

Residual bit error ratio Residual bit error ratio;

SDU error transmission Delivery of erroneous SDUs;

Lossless Relocation indicator Lossless Relocation indicator;

Business category Traffic class, specifically can be divided into conversational (conversational business), streaming (streaming business), interactive (interactive business), background (background business), and can be expanded as needed;

In order to further understand the parameters specifically defined by the present invention, the WiMax QoS parameters proposed by the present invention will be explained in detail below.

(1) User Priority, (for business) user priority, that is, user differentiation level

The purpose of this parameter is to make each part of the WiMax end-to-end bearer distinguish between different users, and to ensure priority for important users; for example, logical entities such as admission control (Admission Control), resource allocation, and QoS execution (schedule, buffering, etc.) need Consider user differentiation levels, but not limited to these entities; moreover, the user priority level as a QoS parameter needs to be passed to ASNGW and BS, especially BS;

This parameter can be represented by 8 bits, and the value range can be [0, 127]. Currently, the recommended value is 1, 2, 3; the definition of this parameter is similar to Allocation (configuration)/Retention Priority (retention priority) in 3GPP 23.107 priority).

Although it is a differentiated level for users, since users have multiple subscription services, the QoS Profile (quality of service parameter information) of each subscribed service can have different user differentiated levels; for example, user A, in a certain video service An important customer is signed, but a certain conversational (session) service is signed by an ordinary customer; for a user, the User Priority level can be the same for all contracted services, or it can be different, that is, the user priority is the user priority for the business class.

The present invention proposes that the BS, as a QoS executive body, be directly oriented to air interface QoS execution, and accurately know user differentiation levels. When the QoS executive function (EP) of ASN GW is applied to this service flow, it is required that ASN GW (including DP, EP) also accurately know the user differentiation level.

The present invention also clarifies the User Priority of the user in WiMax. For the user, the User Priority level can be the same or different for all contracted services.

(2) Lossless Relocation indicator, lossless migration instructions;

That is, lossless migration indication. The present invention proposes this parameter to clarify that lossless migration is not necessary, but a requirement under certain service requirements, user levels, and network conditions;

First describe what lossless migration is. The implementation of the lossless migration is to ensure the continuity of downlink packets, that is, when the BS migrates, the Old BS (original base station) forwards the downlink data packets that have not yet been delivered to the New BS ( New base station) to ensure the continuity of downlink data packets; for example, in the SRNS Relocation (service radio network subsystem relocation) process in 3GPP, the OldRNC (former radio network controller) forwards the downlink data packets that will be delivered in the future To Target RNC (Radio Network Controller). That is to say, in WiMax, the meaning of lossless migration is that when the BS migrates or the BS changes due to the handover process, the Old BS forwards the downlink data packets that have not yet been delivered to the New BS, and has a similar processing implementation process.

For WiMax, it defines whether to support lossless migration as a QoS parameter, and clearly proposes that lossless migration can be used as a differentiated service for users; it is proposed that in some cases, lossless migration is relatively meaningless or of little significance. Choose whether users sign up for lossless migration in terms of provider contracting, delay and packet loss rate, user level, etc.;

In the specific implementation process of the present invention, the following situations may be considered to configure corresponding lossless migration instructions:

1. Not all services require lossless migration. Some services allow certain packet loss. For such services, lossless migration can be configured as unnecessary;

2. In some occasions, it is unnecessary for downlink data packets to wait for data packets forwarded by lossless migration, because it is possible that real-time requirements are more important than packet loss rate requirements, for example, real-time video streams;

3. Under some network conditions, the data packet forwarded by lossless migration may be delayed too long, causing the data packet to lose its meaning when it is forwarded;

4. When switching across operators, operators must design network security and multi-level intercommunication to ensure lossless migration, which causes difficulties in network design and complicates networking.

In short, lossless migration is costly in the implementation of operators, in terms of networking and security. Therefore, in the present invention, lossless migration is used as a means to reflect user differentiated services, and lossless migration is only performed for important or necessary users.

The lossless migration indication information includes: an indication of whether to perform lossless migration within the ASN, an indication of whether to perform lossless migration between ASNs, an indication of whether to perform lossless migration when crossing operators within the ASN, and whether to do lossless migration between ASNs when crossing operators. At least one of the indication of lossless migration, the service flow corresponding to lossless migration, and the sequence number required for lossless migration;

This parameter can be represented by 4 bits specifically. For example, bit 1 indicates whether Intra ASN (inside ASN) is lossless migration, bit 2 indicates whether Inter ASN (inter-ASN) is lossless migration, bit 3 indicates whether Intra ASN cross-operator Do lossless migration, bit 4 indicates whether to perform lossless migration of Inter ASN across operators. Indicate which business flows are to be migrated without loss. and the serial number information required for lossless migration.

However, it is not limited to this parameter definition method, and all ways of expressing the idea of whether to perform lossless migration are protected by this patent.

Based on this parameter, the operator can plan the physical connection layout and performance requirements of the network according to the actual contracted lossless migration user mobility area and number.

Moreover, in the communication system, the BS or ASN GW can judge whether to start the lossless migration process according to the lossless migration indication in the contracted QoS, so as to provide the corresponding service flow with lossless or higher quality of service guarantee.

(3) Service data unit error rate SDU error ratio, residual bit error rate Residual biterror ratio, service data unit error delivery Delivery of erroneous SDUs;

For WiMax, the present invention defines the reliability parameter as the QoS parameter, and clearly proposes that the upper layer service requires the physical layer and the data link layer to support the reliability requirement;

The above three reliability parameters can refer to the definition in 3GPP 23.107. From the perspective of QoS, the upper layer business can have reliability requirements for data packet delivery to ensure business realization and service quality, while the data link layer and The physical layer should ensure this reliability requirement through corresponding mechanisms;

(4) Business classification

The present invention suggests that the service classification of WiMax and 3GPP adopt the same category, which can be divided into conversational (conversational service), streaming (streaming service), interactive (interactive service), background (background service), and can be used as required extension; or, the corresponding business can also be indicated according to another classification method;

That is to say, the present invention is not limited to adopting the above-mentioned service classification representation method, and of course other similar service classification realization methods may also be used.

Based on the quality of service parameters defined above, the WiMax QoS processing flow proposed by the present invention will be described below. Corresponding processing flow According to the difference between the entity acquiring the subscription data and the entity controlling and negotiating QoS, the present invention provides three corresponding processing procedures, and the three processing procedures can be applied separately. The following will describe the three processing procedures respectively.

First, the QoS negotiation processing flow obtained by the ASN GW and controlled by the ASN GW is described. In this processing flow, the BS only needs to perform the QoS execution function, and does not need to perform the control negotiation decision function. As shown in Figure 2, the corresponding specific processing flow includes the following steps:

Step 21: Establish a network connection between the mobile terminal MSS and the ASN GW;

Step 22: ASN GW obtains subscription data information (subscription data) from the AAA server, and the subscription data information can be used for QoS negotiation on services;

The subscription information includes lossless relocation indication information, and all other QoS parameters, including quality of service parameters expressing air interface requirements and quality of service parameters of upper-layer business information, wherein the quality of service parameters of upper-layer business information include business classification, At least one of user priority, service data unit error rate, residual bit error rate and service data unit error transmission parameters;

Step 23: ASN GW returns confirmation information to the mobile terminal;

Step 24: The mobile terminal sends a request message for establishing a session to the ASN GW, and the message carries the QoS information required by the service;

The QoS information initiated by the mobile terminal may optionally include the following information: lossless relocation indication information, QoS parameters expressing air interface requirements and QoS parameters of upper-layer business information, wherein the QoS parameters of upper-layer business information include business classification, At least one of the user priority of the service, the error rate of the service data unit, the residual bit error rate and the error transfer parameter of the service data unit;

Step 25: ASN GW checks the QoS information in the request message according to the subscription data information, and determines the QoS parameter information that can be provided for the service;

In this step, it specifically includes comparing whether the QoS information (that is, the service quality parameter) in all request messages is permitted by the subscription parameter information obtained in step 22, and only providing the service quality guarantee corresponding to the permitted service quality parameter for the corresponding service flow ;

Step 26: ASN GW uses the determined QOS parameter information to perform information interaction with the serving base station BS of the mobile terminal, and establishes a corresponding radio bearer for delivering the service;

In this step, it includes the negotiation of all the parameters defined above, including the lossless relocation indication information, and the quality of service parameters expressing the air interface requirements and the quality of service parameters of the upper layer service information, wherein the service quality of the upper layer service information Parameters include at least one of business classification, user priority for business, business data unit error rate, residual bit error rate and business data unit error transmission parameters; Priority) only perform delivery operations;

Step 27: The ASN GW uses the determined QOS parameter information to perform information interaction with the connection service network CSN, and establishes a corresponding channel for delivering the service;

This step includes the negotiation process for all the parameters mentioned in step 26, but the lossless handover indication is useless to the CSN or may not appear (that is, the lossless handover indication is not included), and the differentiation level parameters need to be passed to the CSN ;

Step 28: When the path for service transmission is established, the ASN GW returns a confirmation message to the mobile terminal, and the message carries the QOS parameter information that can be provided for it;

The QOS parameter information includes lossless relocation indication information, and quality of service parameters expressing air interface requirements and service quality parameters of upper-layer service information, wherein the service quality parameters of the upper-layer service information include service classification, user priority for services At least one of level, service data unit error rate, residual bit error rate and service data unit error transmission parameters; specifically, the specific QOS parameter information to be carried can be selected according to actual needs;

Step 29: The mobile terminal uses the established path to transmit the service, develops the corresponding service, and provides the corresponding QOS guarantee for the service based on the path.

In the processing flow shown in Figure 2, when the mobile terminal is handed over or migrated, including IntraASN GW (inside ASN GW) and Inter ASN GW (between ASN GW) Create and negotiate the GW-BS service flow bearer process, or define the similar ASN GW-BS service flow bearer process during handover/migration.

Moreover, when the Old BS is performing the handover and migration process, it will decide whether to forward the downlink packets that the User Plane has not delivered to the mobile terminal to the NewBS according to the lossless migration instructions, so as to realize the corresponding lossless migration.

Then, the ASN GW obtains the subscription data, and the QoS negotiation processing flow controlled by the serving base station BS of the mobile terminal is described. In this processing flow, the BS not only needs to perform the QoS execution function, but also needs to perform the control negotiation decision function. As shown in Figure 3, the corresponding specific processing flow includes the following steps:

Step 31: Establish a network connection between the mobile terminal and the ASN GW;

Step 32: ASN GW obtains subscription data information (subscription data) from the AAA server, and the subscription data information can be used for QoS negotiation on services;

Wherein, the subscription information includes lossless migration indication and all other QoS parameters;

Step 33: ASN GW returns confirmation information to the mobile terminal;

Step 34: The ASN GW sends the acquired subscription data information to the BS through interaction with the BS, so that the BS can perform QOS negotiation processing according to the subscription data information;

Similarly, the subscription information includes lossless migration instructions and all other QoS parameters;

Step 35: The mobile terminal sends a session establishment request message to the BS, and the message carries the QoS information required by the service;

The QoS information may include all the parameters defined above, but also allows some information to appear optionally;

Step 36: The BS performs QOS check on the received request message according to the subscription data information, and negotiates to determine the QOS parameter information that can be provided for the service;

In this step, it includes comparing whether all requested QOS parameters are permitted by the subscription parameters obtained in step 22, and checking the local resources of the BS, so as to determine the QOS parameter information provided for the corresponding service;

Step 37: The BS controls and initiates the negotiation with the ASN GW and the CSN based on the determined QOS parameter information to transmit the service transmission channel for the service;

It specifically includes the negotiation of all the parameters defined above, but the lossless handover indication is useless to the ASN GW/CSN or may not appear, and the differentiation level parameters need to be passed to the ASN GW/CSN; ASN GW can also be signed from Get the differentiation level directly from the QoS information;

Step 38: After the service transmission path is established, the BS returns a confirmation message to the mobile terminal, and the message carries QOS parameter information that can be provided for the service;

The QoS parameter information includes all parameters defined above, but also allows some information to appear optionally.

Step 39: The mobile terminal uses the established path to transmit the service, and develops the corresponding service, that is, provides the corresponding QOS guarantee for the service based on the path.

In the process shown in Figure 3, when the mobile terminal is switched or relocated, the ASN GW also needs to send the corresponding subscription data information to the serving base station BS after the mobile terminal is switched or the location is updated. The corresponding processing flow is as follows As shown in Figure 4 and Figure 5, they will be described separately below.

When the mobile terminal moves and the location is updated within the ASN GW or across the ASN GW, the corresponding processing flow is shown in Figure 4, which specifically includes the following steps:

Step 41: The mobile terminal notifies the ASN GW of its location update to another BS;

Step 42: If the ASN GW remains unchanged, go directly to Step 43. Otherwise, reacquire the subscription data information (subscription data) used for QoS negotiation of the service from the AAA server;

The subscription data information includes lossless migration instructions and all other QoS parameters;

Step 43: ASN GW returns confirmation information to the mobile terminal;

Step 44: The ASN GW interacts with the BS that the current mobile terminal belongs to with the acquired subscription data information, and sends it to the BS, so that the BS can still perform QOS negotiation processing according to the subscription data information;

Likewise, the subscription data information includes lossless migration indication and all other QoS parameters.

When switching occurs within an ASN GW or between ASN GWs, the corresponding processing flow is shown in Figure 5. The new ASN GW in the figure only exists when migrating across ASN GWs. When switching or migrating within the same ASN, The new ASN GW is the same as the original ASN GW. Figure 5 specifically includes the following steps:

Step 51: The original BS of the mobile terminal notifies the original ASN GW, the new ASNGW, and the new BS through the migration process, and the mobile terminal is handed over, that is, switched to a new BS under another new ASN GW; the new BS can pass this process Obtain the QoS parameters used by the mobile station before migration, and allocate its own resources;

The QoS parameter information described therein includes all the parameters defined above;

At the same time, when the Old BS performs the handover and migration process, it will decide whether to forward the downlink packets that the User Plane has not yet delivered to the mobile terminal to the NewBS according to the lossless migration instructions, so as to realize the corresponding lossless migration.

Step 52: The new ASN GW acquires subscription data information (subscription data) for QoS negotiation of services from the AAA server;

The subscription data information includes lossless migration instructions and all other QoS parameters;

Step 53: The new ASN GW interacts with the acquired subscription data information with the BS to which the current mobile terminal belongs (namely the new BS), and sends it to the new BS, so that the new BS can still Subsequent QOS negotiation processing for the contract data information;

Similarly, the subscription data information includes lossless migration instructions and all other QoS parameters;

In the subsequent behavior, if the new BS initiates the migration process, it will judge the lossless migration instruction to determine whether to transmit the downlink data packets that the user plane will not have time to deliver in the future, and discard it if not.

Finally, the QoS negotiation processing flow controlled by the serving base station BS of the mobile terminal after the subscription data is acquired by the serving base station BS of the mobile terminal is explained. In this processing flow, the BS not only needs to perform QoS execution functions, but also needs to make control negotiation decisions Function. As shown in Figure 6, the corresponding specific processing flow includes the following steps:

Step 61: Establish a network connection between the mobile terminal MSS and the BS;

Step 62: The BS obtains subscription data information (subscription data) from the AAA server, and the subscription data information can be used for QoS negotiation on services;

The subscription data information includes lossless migration instructions and all other QoS parameters;

Step 63: The BS returns confirmation information to the mobile terminal;

Step 64: The mobile terminal sends a session establishment request message to the BS, and the message carries the QoS information required by the service;

The QoS information includes all the parameters defined above, but allows some QOS information to appear optionally;

Step 65: The BS checks the QoS information in the request message according to the subscription data information, and determines the QoS parameter information that can be provided for the service;

The QOS parameter information includes comparing whether all request parameters are allowed by the subscription parameters obtained in step 62, and checking the BS local resources, so as to determine the QOS parameter information that can be provided for the service;

Step 66: The BS uses the determined QOS parameter information to perform information interaction with the ASN GW and the connection service network CSN, and establishes a corresponding channel for delivering the service;

This step includes negotiation for all parameters defined above, but the lossless handover indication is useless or may not appear for ASN GW/CSN, and the differentiation level parameter needs to be passed to ASN GW/CSN.

Step 67: When the path for service transmission is established, the BS returns a confirmation message to the mobile terminal, and the message carries QOS parameter information that can be provided for it;

The QoS parameter information includes all the parameters defined above, but allows some parameter information to appear optionally;

Step 68: The mobile terminal uses the established path to transfer the service, develops the corresponding service, and provides corresponding QOS guarantee for the service based on the path.

When the mobile station switches or migrates, the new BS and the old BS transmit the parameters that the MS has negotiated in the old BS, and the new BS allocates resources according to this, and responds to the switch/migration request of the old BS. After that, the new BS requests the AAA Server to obtain complete subscription data (including QoS), which facilitates the subsequent QoS negotiation process.

At the same time, when the Old BS performs the handover and migration process, it will decide whether to forward the downlink packets of the user plane User Plane that have not yet been delivered to the mobile terminal to the NewBS according to the lossless migration instruction, so as to realize the lossless migration.

In summary, the present invention not only defines the QoS parameters of the WiMax end-to-end MSS-ASN-CSN, but also enables WiMax to select whether the user can integrate network complexity, cross-operator subscription, time delay, packet loss rate, user level, etc. Contract lossless migration. The invention also defines three kinds of QoS negotiation processes of WiMax end-to-end MSS-ASN-CSN, so that the WiMax system can guarantee QoS in the end-to-end MSS-ASN-CSN bearer, thereby providing users with differentiated services.

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

Claims (17)

1, a kind of implementation method that in wireless communication system, provides service quality to guarantee, it is characterized in that, comprise: in wireless communication system services mass parameter transmittance process, the lossless migration indication information is transmitted as the inter-entity of QoS parameter in wireless communication system;

Provide lossless migration according to the lossless migration indication information that transmits for Business Stream.

2, the implementation method that provides service quality to guarantee in the wireless communication system according to claim 1 is characterized in that described wireless communication system is the wireless communication system with lossless migration processing procedure, is following system:

Micro-wave access to global intercommunication WiMax system, broadband CDMA system WCDMA, CDMA systems, CDMA-2000 system or TD SDMA TD-SCDMA system.

3, the implementation method that provides service quality to guarantee in the wireless communication system according to claim 1 is characterized in that, in the WiMax system, described lossless migration indication information comprise following one of at least:

Whether do the pairing Business Stream of indication, lossless migration of lossless migration, the sequence number of the required transmission of lossless migration when whether doing between the indication, access service network of lossless migration cross operator when whether access service network inside does the inner cross operator of indication, the access service network of whether doing lossless migration between the indication, access service network of lossless migration.

4, a kind of implementation method that provides service quality to guarantee in the WiMax wireless communication system is characterized in that, comprising:

Determine QoS parameter in the WiMax wireless communication system, this QoS parameter comprises the lossless migration indication information, express the QoS parameter of eating dishes without rice or wine to require and the QoS parameter of upper-layer service information;

Inter-entity in the WiMax wireless communication system is carried out the negotiation of described QoS parameter;

Guarantee for Business Stream provides service quality according to the QoS parameter of consulting.

5, a kind of implementation method that in the WiMax wireless communication system, provides service quality to guarantee according to claim 4, it is characterized in that, in the WiMax system, when by access service network gateway control quality of service negoriation, the negotiation that described inter-entity in wireless communication system is carried out described QoS parameter specifically comprises:

The request of the foundation business of the QoS parameter information of carrying that the access service network gateway mobile terminal receive sends;

Access service network gateway is determined the QoS parameter of this Business Stream according to signatory QoS parameter information;

Under the control of access service network gateway, consult to set up professional transmission channel based on described QoS parameter between the serving BS of portable terminal and connectivity serving network.

6, a kind of implementation method that provides service quality to guarantee in the WiMax wireless communication system according to claim 5 is characterized in that, describedly consults to set up professional transmission channel based on described QoS parameter and specifically comprises:

Carry out information interaction between the serving BS of access service network gateway and set up corresponding radio bearer based on the QoS parameter of portable terminal and portable terminal;

Access service network gateway is also set up the corresponding business transmission channel based on carrying out information interaction between the QoS parameter of portable terminal and connectivity serving network.

7, a kind of implementation method that provides service quality to guarantee in the WiMax wireless communication system according to claim 5 is characterized in that, described QoS parameter according to negotiation guarantees specifically to comprise for Business Stream provides service quality:

Access service network gateway returns response message to portable terminal after setting up the corresponding business transmission channel, and described response message carries the QoS parameter information of this portable terminal after the negotiation;

Carry out corresponding business based on described professional transmission channel.

8, a kind of implementation method that in the WiMax wireless communication system, provides service quality to guarantee according to claim 4, it is characterized in that, in the WiMax system, when obtaining subscription data by access service network gateway, during serving BS control quality of service negoriation, the negotiation that described inter-entity in wireless communication system is carried out described QoS parameter specifically comprises:

Access service network gateway obtains the subscribed services quality parameter information of portable terminal from the process of portable terminal and net connection triggering;

Access service network gateway sends to serving BS with the subscribed services quality parameter information;

The request of the foundation business of the QoS parameter information of carrying that the serving BS mobile terminal receive sends;

Serving BS is determined the QoS parameter of this Business Stream according to the QoS parameter information of subscribed services mass parameter and portable terminal transmission;

Serving BS is consulted corresponding business transmission channel between foundation and connectivity serving network based on the QoS parameter after determining.

9, a kind of implementation method that provides service quality to guarantee in the WiMax wireless communication system according to claim 8 is characterized in that the negotiation that described inter-entity in wireless communication system is carried out described QoS parameter also comprises:

When portable terminal switches or position when upgrading, then access service network gateway sends to mobile terminal affiliated new serving BS with QoS parameter information.

10, a kind of implementation method that provides service quality to guarantee in the WiMax wireless communication system according to claim 8 is characterized in that, described QoS parameter according to negotiation guarantees specifically to comprise for Business Stream provides service quality:

Serving BS returns response message to portable terminal after setting up the corresponding business transmission channel, and described response message carries the QoS parameter information of this portable terminal after the negotiation;

Carry out corresponding business based on described professional transmission channel.

11 a kind of implementation methods that in the WiMax wireless communication system, provide service quality to guarantee according to claim 4, it is characterized in that, in the WiMax system, when directly obtaining subscription data by serving BS, during serving BS control quality of service negoriation, the negotiation that described inter-entity in wireless communication system is carried out described QoS parameter also comprises:

Serving BS obtains the subscribed services mass parameter of portable terminal from the process of portable terminal and net connection triggering;

The request of the foundation business of the QoS parameter information of carrying that the serving BS mobile terminal receive sends;

Serving BS is determined the QoS parameter of this Business Stream according to the QoS parameter information of subscribed services mass parameter and portable terminal transmission;

Serving BS is consulted corresponding business transmission channel between foundation and connectivity serving network based on the QoS parameter after determining.

12, a kind of implementation method that provides service quality to guarantee in the WiMax wireless communication system according to claim 11 is characterized in that, described QoS parameter according to negotiation guarantees specifically to comprise for Business Stream provides service quality:

Serving BS returns response message to portable terminal after setting up the corresponding business transmission channel, and described response message carries the QoS parameter information of this portable terminal after the negotiation;

Carry out corresponding business based on described professional transmission channel.

13, a kind of wireless communication system is characterized in that, this wireless communication system comprises:

Access service network gateway, the service request of setting up that is used for the QoS parameter information of carrying that mobile terminal receive sends, and determine that according to the signatory QoS parameter information of this portable terminal the QoS parameter of described business, described subscribed services mass parameter comprise the lossless migration indication information, express the QoS parameter of eating dishes without rice or wine to require and the QoS parameter of upper-layer service information;

Serving BS, be used under the control of access service network gateway, described QoS parameter after determining based on access service network gateway, and consult between connectivity serving network to set up professional transmission channel, corresponding business carried out based on described professional transmission channel.

14, wireless communication system according to claim 13 is characterized in that, described wireless communication system is the WiMax system, and,

Described access service network gateway comprises: the unit that is used for obtaining from the process of portable terminal and net connection triggering the subscribed services mass parameter of portable terminal; And, be used for the subscribed services quality parameter information is sent to the unit of serving BS;

Described serving BS comprises: the unit of setting up service request that is used for the QoS parameter information of carrying of mobile terminal receive transmission; Be used for determining the unit of the QoS parameter that this is professional according to the QoS parameter information of subscribed services mass parameter and portable terminal transmission; And the unit of consulting corresponding business transmission channel between foundation and connectivity serving network according to the QoS parameter after determining.

15, wireless communication system according to claim 14 is characterized in that, described access service network gateway also comprises:

Be used for carrying out the unit that information interaction is set up radio bearer between serving BS based on the QoS parameter of portable terminal and portable terminal; And

Be used for based on carrying out the unit that information interaction is set up professional transmission channel between the QoS parameter of portable terminal and connectivity serving network.

16, wireless communication system according to claim 14, it is characterized in that described access service network gateway also comprises: be used for switching or the position sends to the unit of mobile terminal affiliated new serving BS with QoS parameter information after upgrading at portable terminal.

17, according to claim 14,15 or 16 described wireless communication systems, it is characterized in that described serving BS also comprises: the unit of response message that is used for sending the QoS parameter information of this portable terminal after carrying negotiation to portable terminal.

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