CN101179421B - Method, device and system of distinguishing mapping table of service quality - Google Patents
Method, device and system of distinguishing mapping table of service quality Download PDFInfo
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Abstract
The invention discloses a method, a device and a system for distinguishing a QoS mapping table so that a terminal equipment can correctly update the QoS mapping table when the QoS mapping table at thenetwork side is changed. The method of the invention comprises the processes that: the network side sends the message containing the QoS mapping table and the identification of the QoS mapping tableand the terminal equipment receiving the message processes the QoS mapping table according to the identification information in the message. In addition, the terminal equipment sends updates the localQoS mapping table according to the updated QoS mapping table that the network sides sends in the mode of the unicast. The adoption of the invention effectively avoids the problem that the QoS can notbe normally processed due to that the terminal equipment wrongly updates the locally saved QoS mapping table, thus resulting in that the terminal equipment can more effectively work.
Description
Technical field
The present invention relates to the communications field, particularly a kind of method of distinguishing mapping table of service quality, Apparatus and system.
Background technology
Extended service set (the ESS of 802.11 networks as shown in Figure 1, Extension Service Set) by passing through dissemination system (DS, Distribution System) a plurality of Basic Service Set (BSS of Lian Jieing, BasicService Set) forms, wherein, a BSS is by one group of synchronous terminal/website (STA, STATION) form, described STA is the treatment facility that has 802.11 radio network interfaces, mainly refer to the user terminal of 802.11 networks, as laptop computer or laptop computer; Described STA is linked into DS by access point (AP, Access Point); Described DS is not included in the ESS.
In IEEE 802.11u standard document " P802.11u-D0.01 ", mention in WLAN and external network intercommunication and need carry out service quality (QoS, Quality of Service) mapping, yet different external networks has different QoS method for expressing, but be in all IP packets with Differentiated Services code-point (DSCP in the IP head, Different Service Code Point) identifies priority end to end, so if on the air interface of IEEE 802.11, keep the access category (AC that the words of this priority just need correctly be mapped to DSCP IEEE 802.11e, Access Category), introduce the method for QoS mapping and the method for transmission QoS mapping table below respectively.
IEEE 802.11e has defined QoS mechanism, and promptly User Priority (UP, User Priority) is to the mapping method of access category (AC, Access Category).In IEEE 802.11e, define the enhancing distributed coordination and inserted (EDCA, Enhanced Distribution Coordinate Access) mechanism, in this mechanism, provide following function: the terminal/website (QSTA that supports service quality, Quality ofService (QoS) Station) can come access channel with 8 different UP, concrete method is: define four kinds of access style AC and support the STA distribution to have the Business Stream of different UP.The send opportunity of the different AC correspondences duration of busy channel (distribute), competition window, the time of keeping out of the way are also different, the formation that different AC is corresponding different.When STA sent data to AP, the data of different UP sign can be put into corresponding AC formation and send, and in like manner to send data to STA also be so to AP, therefore also just realized the QoS of IEEE 802.11.UP is as shown in table 1 to the mapping table of AC.
Table 1
The main UP of embodiment is listed as the mapping that AC is listed as in the last table, and priority from top to bottom increases progressively.8 UP values corresponding respectively four types the business that defines among the AC: AC_BK, AC_BE, AC_VI, AC_VO, and just corresponding Background, Best Effort, Video, the Voice of the business of these four kinds of AC.
Introduce the mapping method of DSCP to UP below, adopt mapping table of service quality element (QoS Map Set element) to represent this mapping relations in the existing motion, QoS mapping table concrete form is as shown in table 2.
| Sequence number Order | Size Size (octets) | Description is described |
| 1 | 1 | |
| 2 | 1 | Length |
| 3 | 2 | The DSCP element #1 (optional) that makes an |
| 4 | 2 | The DSCP element #2 (optional) that makes an |
| 4+n-2 | 2 | The DSCP element #n (optional) that makes an exception |
| 5+n-2 | 2 | UP 0 DSCP |
| 6+n-2 | 2 | UP 1 DSCP scope element |
| 7+n-2 | 2 | UP 2 DSCP scope elements |
| 8+n-2 | 2 | UP 3 DSCP scope elements |
| 9+n-2 | 2 | UP 4 DSCP scope elements |
| 10+n-2 | 2 | UP 5 DSCP scope elements |
| 11+n-2 | 2 | UP 6 DSCP scope elements |
| 12+n-2 | 2 | UP 7 DSCP scope elements |
Table 2
In the QoS mapping table, component identification Element ID is the ident value of QoS mapping table element; Length L ength is the byte number except Element id field and Length field among the QoS Map Set; Differentiated Services code-point exception element DSCP exception element is optionally, has 8 at most; QoS MapSet has 8 Differentiated Services code-point scope element DSCP Range element to correspond to the value of 8 UP respectively at last; Such as sequence number Order is that the value of the corresponding UP of DSCP Range element of 5+n-2 equals 0, and other are similar.
Following mask body is introduced the form of DSCP exception element field and DSCP Range element field.In the concrete form schematic diagram of DSCP exception element field as shown in Figure 2, DSCPValue is the value of DSCP, and User Priority is exactly corresponding UP value; In the concrete form schematic diagram of DSCP Rangeelement field as shown in Figure 3, DSCP Low Value is the little end value of DSCP, DSCPHigh Value is the big end value of DSCP, and the DSCP value that is between little end value and the big end value all corresponds to a corresponding UP value (concrete UP value is referring to table 1).All can corresponding UP value through the value of each DSCP after the above-mentioned mapping, thus QoS mapping table just DSCP to the QoS mapping table of UP.
As shown in Figure 4, this figure is the mutual primitive schematic diagram of terminal and access point, wherein, medium access control (MAC, Media Access Control) layer and terminal supervisory entity (SME, Station ManagementEntity) communicates (having a MAC layer management entity MLME (MAC sublayer management entity) interface between MAC layer and the SME) by primitive between, pass through frame traffic between the MAC layer of STA and the MAC layer of AP; Its mutual flow process is as follows:
1, the SME of STA produces a request primitive, and this request primitive is sent to the MAC layer of STA.
2, the MAC layer of STA generates corresponding request frame according to the request primitive that receives, and this request frame is sent to the MAC layer of AP.
3, the MAC layer of AP generates corresponding indication primitive according to the request frame that receives, and this indication primitive is sent to the SME of AP.
4, the SME of AP generates corresponding response primitive according to the indication primitive that receives, and this response primitive is sent to the MAC layer of AP.
5, the MAC layer of AP generates corresponding response frame according to the response primitive that receives, and this response frame is sent to the MAC layer of STA.
6, the MAC layer of STA generates corresponding confirm primitive according to the response frame that receives, and this confirm primitive is sent to the SME of STA.The SME of STA carries out corresponding action after receiving confirm primitive.
In the generic frame structure schematic diagram of 802.11 agreements shown in Fig. 5 A, Fig. 5 B, 802.11 the interchangeable frame of agreement is mainly by medium access control header (MAC Header), frame information (Frame Body) and Frame Check Sequence (FCS, Frame Check Sequence) three parts are formed, wherein, MAC Header mainly identifies type, address, segment information and the service quality control information such as (QoS Control) of this frame; Frame Body is a frame information, if this frame is a Frame, then Frame Body is exactly a data message; If this frame is a management frames, then Frame Body is exactly that some need information of managing; FCS is the check information of entire frame.
Fig. 6 is the management frames structural representation of 802.11 agreements, 802.11 the management frames of agreement is made up of MACHeader, Frame Body and FCS three parts equally, wherein, DA among the MAC Header represents the destination address of frame, SA represents the source address of frame, BSSID is the MAC Address of an AP, and this AP is managing this BSS; Frame Body comprises the concrete management information of this management frames.The Action frame belongs to management frames, and its frame mainly is made of the Action field, and wherein, the Action field mainly is made up of Category field and Action Details field, as shown in Figure 7; The Category field identification classification of this Action frame, the Action frame of a given Category Name is called＜Category Name〉the Action frame, for example the Action frame of QoS classification is called QoS Action frame, and this time, the value of Category field was 1; Action Details is some specifying informations of Action frame, and is different and different according to the type of Action frame.
Introduce the transmission method of QoS mapping table below, as shown in Figure 8, the pre-configured information of back-end network among this flow process hypothesis AP, the corresponding relation between VLAN and the DSCP mapping for example, its implementation procedure is as follows:
Step 800, STA and AP finish association/re-association (Association).
Step 801, STA and AP finish the EAP authentication, and promptly STA receives EAP-Success message.
The related STA of step 802, AP is to VLAN/tunnel VLAN/Tunnel, and AP can correctly associate STA with corresponding QoS Map Set according to this information.
Step 803, STA obtain the transmission security key of air interface, promptly finish 4-Way Handshake.
Step 804, STA ask the QoS mapping table by QoS Map Request frame to AP.
Step 805, AP are selected and the corresponding QoS mapping table of STA, and this QoS mapping table is placed in the QoS Map Configure frame sends to STA.
Step 806, STA preserve the QoS mapping table in the QoS Map Configure frame that receives.
Step 807, when the QoS mapping table among the AP take place to upgrade, AP will comprise the QoS mapping table of renewal by the multicast/broadcast mode QoS Map Configure frame is handed down to STA.
Step 808, STA upgrade local QoS mapping table after receiving QoS Map Configure frame.
QoS Map Request frame in the above-mentioned flow process and QoS Map Configure frame all are the Action frames, and the frame form of QoS Map Request frame is as shown in table 3:
| Sequence number Order | Information Information |
| 0 | |
| 1 | |
| 2 | Dialogue sign Dialog Token |
Table 3
The frame form of QoS Map Configure frame is as shown in table 4:
| Sequence number Order | Information Information |
| 0 | |
| 1 | |
| 2 | Dialogue sign Dialog Token |
| 3 | Mapping table of service quality QoS Map Set |
Table 4
The implication of the Category field in table 3 and the table 4 is identical with the Category field among Fig. 7, and their value all is 1 (expression is a QoS Action frame), and the Action field has been represented different QoS Action frames, and their value is respectively 4 and 5; Dialog Token field is used to mate the response and the request of Action frame; The concrete form ginseng of the QoS mapping table in the table 4 sees the above table 2.
STA is when AP request QoS mapping table, and as shown in Figure 9, QoS Map Request frame and the transmission course of QoS MapConfigure frame between STA and AP are as follows:
1, the SME of STA produces a MLME-QoSMap.request primitive, and this primitive is sent to the MAC layer of STA.
2, the MAC layer of STA generates corresponding QoS Map Request frame according to the MLME-QoSMap.request primitive that receives, and this frame is sent to the MAC layer of AP.
3, the MAC layer of AP generates MLME-QoSMap.indication primitive according to the QoS Map Request frame that receives, and this primitive is sent to the SME of AP.
4, the SME of AP generates corresponding M LME-QoSMap.response primitive according to the MLME-QoSMap.indication primitive that receives, and this primitive is sent to the MAC layer of AP.
5, the MAC layer of AP generates corresponding QoS Map Configure frame according to the MLME-QoSMap.response primitive that receives, and this frame is sent to the MAC layer of STA.
6, the MAC layer of STA generates MLME-QoSMap.confirm primitive according to the QoS Map Configure frame that receives, and this primitive is sent to the SME of STA.The SME of STA carries out corresponding action according to this primitive that receives.
Transmission course and the said process of QoS Map Configure frame between STA and AP is similar when the QoS Map Set among the AP takes place to upgrade, only omit the 1st and went on foot for the 3rd step (at this moment, the SME of AP can not receive MLME-QoSMap.indication primitive), other performing steps in like manner repeat no more.
In sum, access point AP has a plurality of QoS mapping tables in the prior art, therefore the QoS mapping table that is handed down to terminal is also just different, so when AP issues the QoS mapping table of renewal, whether the QoS mapping table of STA in can not distinguishing QoS Map Configure frame be own corresponding QoS mapping table, if the QoS mapping table that AP issues is not the QoS mapping table of STA correspondence, STA will obtain wrong QoS mapping table so, and then cause STA can not normally upgrade the QoS mapping table, further have influence on the service quality of STA.
Summary of the invention
The invention provides a kind of method of distinguishing mapping table of service quality, so that terminal equipment can correct updating service quality mapping table when change takes place the mapping table of service quality of network side.
The invention provides following technical scheme:
A kind of method of distinguishing mapping table of service quality comprises step:
Network side sends the message that comprises mapping table of service quality and identification information thereof;
Described message be network side receive the request mapping table of service quality message after send response message the time, the terminal equipment that receives this response message is preserved described mapping table of service quality and identification information thereof in this locality;
When described message is the updating message of network side transmission, the terminal equipment that receives described updating message determines that identification information in this message with after local identification information is consistent, utilizes the mapping table of service quality in this updating message to upgrade the local service quality mapping table.
A kind of method of updating service quality mapping table comprises step:
Network side sends the updating message of the mapping table of service quality that comprises renewal by mode of unicast;
The terminal equipment that receives this updating message upgrades the local service quality mapping table according to the mapping table of service quality in this updating message.
A kind of network equipment comprises:
Receiving element is used to receive the message that other communication equipments send;
Selected cell is used for according to request message or initiatively selection and corresponding mapping table of service quality of other communication equipments and identification information thereof;
Transmitting element is used to send the message that comprises described mapping table of service quality and identification information thereof.
A kind of terminal equipment comprises:
Receiving element is used to receive the message that comprises mapping table of service quality and identification information thereof;
Memory cell is used to preserve mapping table of service quality and identification information thereof;
Comparing unit, the identification information that is used for the mapping table of service quality of the identification information of mapping table of service quality of the message that will receive and preservation compares;
Updating block is used for when the identification information of the message that receives is consistent with the identification information of preservation, upgrades mapping table of service quality in the described memory cell according to the mapping table of service quality in the described message.
A kind of communication system comprises:
The network equipment is used for sending the message that comprises mapping table of service quality and identification information thereof to terminal equipment;
Terminal equipment is used for receiving response message after the message of network device requests mapping table of service quality, and preserves mapping table of service quality and the identification information thereof that carries in the described response message in this locality; Perhaps be used to receive updating message, and determine that identification information in this message with after local identification information is consistent, utilizes the mapping table of service quality renewal local service quality mapping table in this updating message.
Beneficial effect of the present invention is as follows:
When the mapping table of service quality of network side took place to upgrade among the present invention, terminal equipment can correctly judge whether to upgrade the local mapping table of service quality of preserving; Terminal equipment is during for the first time from network side request mapping table of service quality, the response message that network side will comprise corresponding mapping table of service quality and identification information thereof sends to described terminal equipment, and described terminal equipment is preserved described mapping table of service quality and identification information thereof in this locality; When the mapping table of service quality of network side changes, to comprise the mapping table of service quality of renewal and the updating message of identification information thereof and send to terminal equipment, the terminal equipment that receives this updating message compares the identification information of the described identification information in this message with the local mapping table of service quality of preserving, and upgrades the local mapping table of service quality of preserving according to the mapping table of service quality in this updating message when both are consistent; In addition, when the mapping table of service quality of network side took place to upgrade, network side issued the mapping table of service quality of renewal by mode of unicast, can realize that also terminal equipment correctly upgrades the local mapping table of service quality of preserving among the present invention; Adopt the present invention to avoid effectively since the terminal equipment mistake upgrade the mapping table of service quality of local preservation cause can not normal process service quality problem, thereby make terminal equipment to work more effectively.
Description of drawings
Fig. 1 is the extended service set schematic diagram of 802.11 networks in the prior art;
Fig. 2 is a DSCP exception element field format schematic diagram in the prior art;
Fig. 3 is a DSCP range element field format schematic diagram in the prior art;
Fig. 4 is a mutual former sonagram between terminal and the access point in 802.11 agreements in the prior art;
Fig. 5 A, Fig. 5 B are the generic frame structure schematic diagram of 802.11 agreements in the prior art;
Fig. 6 is the management frames structural representation of 802.11 agreements in the prior art;
Fig. 7 is an Action field format schematic diagram in the Action frame in the prior art;
Fig. 8 is the flow chart of transmission QoS mapping table between STA and the AP in the prior art;
The former sonagram that Fig. 9 transmits between STA and AP for QoS Map Request frame in the prior art and QoS Map Configure frame;
Figure 10 is a kind of communication system architecture schematic diagram in the embodiment of the invention;
Figure 11 is that STA is by the realization flow figure of QoS mapping table identification renewal local QoS mapping table when increasing QoS mapping table sign in the embodiment of the invention one in QoS Map Configure frame;
Figure 12 is that STA is by the realization flow figure of QoS mapping table identification renewal local QoS mapping table when increasing QoS mapping table sign in the embodiment of the invention one in the QoS mapping table;
Figure 13 is that STA upgrades the realization flow figure of local QoS mapping table when increasing multicast address field or multicast address cell in the embodiment of the invention two in QoS Map Configure frame by multicast address;
Figure 14 is a multicast address cell format schematic diagram in the embodiment of the invention two;
Figure 15 is that STA upgrades the realization of local QoS mapping table when increasing the multicast address field in the embodiment of the invention two in the QoS mapping table by multicast address;
Figure 16 is a kind of communication system architecture schematic diagram in the embodiment of the invention.
Embodiment
The identification information of terminal equipment by the service quality QoS mapping table determines whether the QoS mapping table that preserve this locality is updated to the QoS mapping table of the renewal that network side issues, the QoS mapping table of renewal this locality when the QoS mapping table identification information in receiving updating message is consistent with the identification information of the local mapping table of service quality of preserving in the embodiment of the invention; In addition, the updating message that network side sends the QoS mapping table comprise renewal by mode of unicast in the embodiment of the invention is to terminal equipment, and described terminal equipment upgrades the local QoS mapping table of preserving according to the QoS mapping table in this updating message.
A kind of communication system architecture schematic diagram in the present embodiment as shown in figure 10, this system comprises terminal equipment (STA) 100 and access device (AP) 101; Described access device 101 is used for sending the message that comprises QoS mapping table and identification information thereof to terminal equipment 100; Described terminal equipment 100 is used for handling described QoS mapping table according to the identification information of the described message that receives.
Terminal equipment 100 is when access device 101 request QoS mapping tables, access device 101 sends response message by quality of service configuration QoS Map Configure frame to terminal equipment 100, and described QoS MapConfigure frame comprises QoS mapping table and identification information thereof; The terminal equipment 100 that receives this response message is preserved QoS mapping table and the identification information thereof in the described QoS Map Configure frame in this locality.
Access device 101 sends updating message by QoS Map Configure frame to terminal equipment 100, described QoS Map Configure frame comprises the QoS mapping table and the identification information thereof of renewal, terminal equipment 100 compares identification information in this response message and the local identification information of preserving, and upgrades the local QoS mapping table according to the QoS mapping table in the described QoS Map Configure frame when both are consistent.
As shown in figure 10, described access device 101 comprises: receiving element 1010 is used for the message that receiving terminal apparatus 100 sends, and this message comprises the request message of the request QoS mapping table that terminal equipment 100 sends; Selected cell 1011 is used for initiatively selecting or selecting and terminal equipment 100 corresponding QoS mapping table and identification informations thereof according to the request message that terminal equipment 100 sends; Transmitting element 1012 is used for sending the response message that comprises QoS mapping table and identification information thereof according to described request message to terminal equipment 100, and comprises the QoS mapping table of renewal and the updating message of identification information thereof to terminal equipment 100 transmissions when the QoS mapping table takes place to upgrade.
Described terminal equipment 100 comprises: transmitting element 1000 is used for sending to access device 101 request message of request QoS mapping table; Receiving element 1001 is used to receive the message that comprises QoS mapping table and identification information thereof that access device 101 sends, and obtain corresponding QoS mapping table and identification information thereof according to the message that receives, this message comprises response message and the updating message that access device 101 sends; Memory cell 1002 is used for preserving in this locality QoS mapping table and the identification information thereof that obtains from described response message; The identification information of identification information and the local QoS mapping table of preserving that comparing unit 1003 is used for the QoS mapping table of the updating message that will receive compares; Updating block 1004 is used for when the identification information of the updating message that receives is consistent with the identification information of preservation, upgrades QoS mapping table in the described memory cell 1002 according to the QoS mapping table in the described updating message.If there is not the QoS mapping table in terminal equipment 100 this locality, the QoS Map Configure frame that comprises the QoS mapping table that then will receive directly abandons; STA described herein does not exist the QoS mapping table to be meant that STA does not ask the QoS mapping table or asked the QoS mapping table still not receive response message.
Embodiment one:
STA determines whether the QoS mapping table that preserve this locality is updated to the QoS mapping table of the renewal that AP issues in the present embodiment by QoS mapping table sign; QoS mapping table sign can adopt the multiple form of expression, and for example simple unduplicated numeral, domain name, signing service provide the sign of network (SSPN, Subscription ServiceProvider Network) etc.
The interpolation of QoS mapping table sign realizes by following dual mode in the present embodiment: a kind of is to increase QoS mapping table identification field in QoSMap Configure frame; Another kind is to increase QoS mapping table identification field in the QoS mapping table.
As shown in figure 11, when increasing QoS mapping table identification field in the present embodiment in QoS Map Configure frame, STA is as follows by the realization flow of QoS mapping table identification renewal local QoS mapping table:
Step 1100, STA and AP finish association/re-association (Association).
Step 1101, STA and AP finish the EAP authentication, and promptly STA receives EAP-Success message.
The related STA of step 1102, AP is to VLAN/tunnel VLAN/Tunnel, and AP sets up incidence relation between STA and the corresponding mapping table of service quality according to this information.
Step 1103, STA obtain the transmission security key of air interface, promptly finish 4-Way Handshake.
Step 1104, STA ask the QoS mapping table by QoS Map Request frame (Action frame) to AP.
Step 1105, AP select QoS mapping table corresponding with STA and the corresponding QoS mapping table sign of this QoS mapping table.
Step 1106, AP send to STA with QoS mapping table and the QoS mapping table sign of selecting by QoS MapConfigure frame.
Step 1107, STA receive QoS mapping table and the QoS mapping table preserved in this frame behind the QoS Map Configure frame and identify, and set up corresponding relation between the two.
Step 1108, when the QoS mapping table among the AP take place to upgrade, AP issues the QoS mapping table of renewal by QoS Map Configure frame, and this QoS Map Configure frame carries the QoS mapping table of renewal and the QoS mapping table sign corresponding with this QoS mapping table.
Step 1109, STA after receiving QoS Map Configure frame compare sign of the QoS mapping table in this frame and local QoS mapping table sign of preserving, and when both are consistent, the QoS mapping table of this locality is updated to the QoS mapping table of the renewal that AP issues, otherwise the local QoS mapping table does not upgrade.
When in QoS Map Configure frame, increasing QoS mapping table identification field, the frame form of QoS MapConfigure frame is as shown in table 5, increase a Map id field in the frame of existing QoS Map Configure frame, the value of this field is exactly the value of AP for the QoS mapping table sign of corresponding QoS mapping table distribution; Increase Map id field is not limited to the position in the table 5 in the frame of QoS Map Configure frame.
| Sequence number Order | Information Information |
| 0 | |
| 1 | |
| 2 | Dialogue sign Dialog Token |
| 3 | Mapped |
| 4 | Mapping table of service quality QoS Map Set |
Table 5
For the MAC layer of AP can be assembled the QoS Map Configure frame that has QoS mapping table sign and the SME of STA can correctly obtain the QoS mapping table sign corresponding with the QoS mapping table, also need modification made in existing primitive, mainly be amended as follows: in MLME-QoSMap.response primitive, increase Map ID parameter, the main effect of this parameter is that the message of the QoS mapping table identification parameter that the SME of AP will be corresponding with QoS mapping table parameter in this primitive sends to the MAC layer, and the MAC layer can be assembled the QoS Map Configure frame that has QoS mapping table sign like this; In MLME-QoSMap.confirm primitive, increase Map ID parameter in addition, the main effect of this parameter is that the message of the QoS mapping table identification parameter that the MLME of STA will be corresponding with QoS mapping table parameter in this primitive sends to SME, and SME can correctly obtain the QoS mapping table sign corresponding with the QoS mapping table like this; If the alignment processing of QoS mapping table and QoS mapping table sign is finished at the MAC layer, then do not need to revise existing primitive and just can reach requirement equally.
As shown in figure 12, when increasing QoS mapping table identification field in the present embodiment in the QoS mapping table, STA is as follows by the realization flow of QoS mapping table identification renewal local QoS mapping table:
Step 1200 is to step 1204: identical to step 1104 with above-mentioned steps 1100.
Step 1205, AP select the QoS mapping table corresponding with STA, comprise corresponding QoS mapping table sign in this QoS mapping table.
Step 1206, AP send to STA with the QoS mapping table of selecting by QoS Map Configure frame.
Step 1207, STA receive the QoS mapping table of preserving behind the QoS Map Configure frame in this frame.
Step 1208, when the QoS mapping table among the AP take place to upgrade, AP issues the QoS mapping table of renewal by QoS Map Configure frame, comprises QoS mapping table sign in this QoS mapping table.
Step 1209, STA after receiving QoS Map Configure frame compare the QoS mapping table sign in sign of the QoS mapping table in the QoS mapping table and the local QoS mapping table of preserving, and when both are consistent, the QoS mapping table of this locality is updated to the QoS mapping table of the renewal that AP issues, otherwise the local QoS mapping table does not upgrade.
When adding QoS mapping table identification field in the QoS mapping table, the concrete form of QoS mapping table is as shown in table 6, increases the Map id field in existing QoS mapping table, and the value of this field is exactly the value of AP for the QoS mapping table sign of this QoS mapping table distribution; Increase Map id field is not limited to the position in the table 6 in the QoS mapping table.
| Sequence number Order | Size Size (octets) | Description is described |
| 1 | 1 | |
| 2 | 1 | Length |
| 3 | 2 | The |
| 4 | 2 | The DSCP element #1 (optional) that makes an exception |
| 5 | 2 | The DSCP element #2 (optional) that makes an exception |
| 5+n-2 | 2 | The DSCP element #n (optional) that makes an |
| 6+n-2 | 2 | UP 0 DSCP scope element |
| 7+n-2 | 2 | |
| 8+n-2 | 2 | |
| 9+n-2 | 2 | UP 3 DSCP scope elements |
| 10+n-2 | 2 | |
| 11+n-2 | 2 | UP 5 DSCP scope elements |
| 12+n-2 | 2 | |
| Sequence number Order | Size Size (octets) | Description is described |
| 13+n-2 | 2 | UP 7 DSCP scope elements |
Table 6
Embodiment two:
The multicast address of STA by the association of QoS mapping table determines whether the QoS mapping table that preserve this locality is updated to the QoS mapping table of the renewal that AP issues in the present embodiment.
AP receives and selects corresponding QoS mapping table and the multicast address related with this QoS mapping table after the message of STA request QoS mapping table and it is handed down to STA, just joins the multicast group of the multicast address sign in the frame after STA receives; When the QoS mapping table among the AP upgrades, AP just issues the QoS mapping table of renewal to STA by above-mentioned multicast address, so only the STA in the multicast group of above-mentioned multicast address sign could obtain the QoS mapping table that upgrades, and other are the QoS mapping table of the STA in the multicast group that above-mentioned multicast address identifies with regard to not obtaining to upgrade not.
The multicast address of QoS mapping table association can be realized by following dual mode in the present embodiment: a kind of is to increase multicast address field or multicast address cell in QoS Map Configure frame; Another kind is to increase the multicast address field in the QoS mapping table.
As shown in figure 13, when increasing multicast address field or multicast address cell in the present embodiment in QoS Map Configure frame, STA is as follows by the realization flow that multicast address upgrades the local QoS mapping table:
Step 1300 is to step 1301: identical to step 1101 with above-mentioned steps 1100.
Step 1302, related STA are to VLAN, and AP selects a multicast address, and safeguards this multicast address; And set up incidence relation between this multicast address and the mapping table of service quality.
Step 1303, STA obtain the transmission security key of air interface, promptly finish 4-Way Handshake.
Step 1304, STA ask the QoS mapping table by QoS Map Request frame to AP.
Step 1305, AP select the QoS mapping table corresponding with STA.
Step 1306, AP send to STA with QoS mapping table and the multicast address of selecting by QoS Map Configure frame.
Step 1307, STA receive QoS mapping table and the multicast address of preserving behind the QoS Map Configure frame in this frame, and set up incidence relation between the two.
Step 1308, when the QoS mapping table among the AP take place to upgrade, AP issues the QoS mapping table of renewal by QoS Map Configure frame, the destination address in this QoS Map Configure frame is described multicast address.
Step 1309, STA after receiving QoS Map Configure frame compare the multicast address in this frame and this multicast address of also preserving, and when both are consistent, the QoS mapping table of this locality is updated to the QoS mapping table of the renewal that AP issues, otherwise the local QoS mapping table does not upgrade.
The mode of the multicast address of interpolation QoS mapping table association is as follows in QoS Map Configure frame: add the multicast address field or add the multicast address cell in QoS Map Configure frame in QoS Map Configure frame.
When adding the multicast address field in QoS Map Configure frame, the frame form of QoS Map Configure frame is as shown in table 7, increases the multicast address field in the frame of existing QoS Map Configure frame:
| Sequence number Order | Information Information |
| 0 | |
| 1 | |
| 2 | Dialogue sign Dialog Token |
| 3 | Mapping table of service quality |
| 4 | Multicast address Multicast Address |
Table 7
When adding the multicast address cell in QoS Map Configure frame, the frame form of QoS Map Configure frame is as shown in table 8, increases the multicast address cell in the frame of existing QoS Map Configure frame:
| Sequence number Order | Information Information |
| 0 | |
| 1 | |
| 2 | Dialogue sign Dialog Token |
| 3 | Mapping table of service quality |
| 4 | Multicast address cell Multicast Address IE |
Table 8
As shown in figure 14, the multicast address cell comprises component identification Element id field, length L ength field and multicast address Multicast Address field:
The value of Element id field is 60, and the value of Element ID is not limited to this value;
The Length field is the length of Multicast Address field, and its value is 6;
Multicast group of Multicast Address field identification.
In the above-mentioned realization flow, multicast address field or multicast address cell in the QoS Map Configure frame that sends during AP response STA are essential, but at AP when STA issues the QoS Map Configure frame of the QoS mapping table that comprises renewal, multicast address field in this frame or multicast address cell are that optionally the destination address field (DAF) in this frame is the multicast address of multicast address field or multicast address source identity.
As shown in figure 15, when increasing the multicast address field in the present embodiment in the QoS mapping table, STA is as follows by the realization flow that multicast address upgrades the local QoS mapping table:
Step 1500 is to step 1504: identical to step 1304 with above-mentioned steps 1300.
Step 1505, AP select the QoS mapping table corresponding with STA, comprise the multicast address field in this QoS mapping table.
Step 1506, AP send to STA with the QoS mapping table of selecting by QoS Map Configure frame.
Step 1507, STA receive the QoS mapping table of preserving behind the QoS Map Configure frame in this frame, and parse multicast address, and the incidence relation of setting up this multicast address and QoS mapping table.
Step 1508, when the QoS mapping table among the AP take place to upgrade, AP issues the QoS mapping table of renewal by QoS Map Configure frame, comprises the multicast address field in this mapping table, the destination address in this QoS MapConfigure frame is described multicast address.
Step 1509, STA after receiving QoS Map Configure frame compare multicast address in this frame and the local multicast address of preserving, and when both are consistent, the QoS mapping table of this locality is updated to the QoS mapping table of the renewal that AP issues, otherwise the local QoS mapping table does not upgrade.
When adding the multicast address field in the QoS mapping table, the frame form of QoS Map Configure frame is as shown in table 9, increases the multicast address field in existing QoS mapping table:
| Sequence number Order | Size Size (octets) | Description is described |
| 1 | 1 | |
| 2 | 1 | Length |
| 3 | 6 | |
| 4 | 2 | The DSCP element #1 (optional) that makes an exception |
| 5 | 2 | The DSCP element #2 (optional) that makes an exception |
| 5+n-2 | 2 | The DSCP element #n (optional) that makes an |
| 6+n-2 | 2 | UP 0 DSCP scope element |
| 7+n-2 | 2 | |
| 8+n-2 | 2 | |
| 9+n-2 | 2 | UP 3 DSCP scope elements |
| 10+n-2 | 2 | |
| 11+n-2 | 2 | UP 5 DSCP scope elements |
| 12+n-2 | 2 | |
| Sequence number Order | Size Size (octets) | Description is described |
| 13+n-2 | 2 | UP 7 DSCP scope elements |
Table 9
Embodiment three:
When the QoS mapping table among the AP took place to upgrade, AP will comprise the QoS mapping table of renewal with mode of unicast QoS Map Configure frame was issued to corresponding STA in the present embodiment, and the STA that receives this frame upgrades the local QoS mapping table.
A kind of communication system architecture schematic diagram of present embodiment as shown in figure 16, this system comprises terminal equipment (STA) 160 and access device (AP) 161; Described access device 161 comprises the response message of QoS mapping table to its transmission according to the request message of terminal equipment 160, and sending the updating message of the mapping table of service quality that comprises renewal to terminal equipment 160 by mode of unicast, the destination address of described updating message is medium access control (MAC) address of certain terminal equipment; Described terminal equipment 160 is used for upgrading the local QoS mapping table according to the QoS mapping table of described updating message.
As shown in figure 16, described access device 161 comprises: receiving element 1610 is used for the message that receiving terminal apparatus 160 sends, and this message comprises the request message of the request QoS mapping table that terminal equipment 160 sends; Selected cell 1611 is used for initiatively selecting or selecting and terminal equipment 160 corresponding QoS mapping tables according to the request message that terminal equipment 160 sends; Transmitting element 1612 is used for sending the response message that comprises the QoS mapping table according to described request message to terminal equipment 160, and the updating message that sends the QoS mapping table that comprises renewal when the QoS mapping table takes place to upgrade by mode of unicast to terminal equipment 160.
Described terminal equipment 160 comprises: transmitting element 1600 is used for sending to access device 161 request message of request QoS mapping table; Receiving element 1601 is used to receive that access device 161 sends comprises QoS mapping table message, and this message comprises response message and the updating message that access device 161 sends; Memory cell 1602 is used for preserving in this locality the QoS mapping table of described response message; Updating block 1603 upgrades QoS mapping table in the described memory cell 1602 according to the QoS mapping table in the described updating message.
The flow process of STA renewal local QoS mapping table as shown in Figure 8 in the present embodiment, in step 807, the QoS Map Configure frame that AP will comprise the QoS mapping table of renewal is handed down to STA by mode of unicast, and the destination address of clean culture is exactly the MAC Address that needs the STA of this frame of reception; When STA receives this QoS Map Configure frame, just upgrade local QoS mapping table according to the QoS mapping table in this QoS Map Configure frame.
Destination address in the QoS Map Configure frame correctly can be set to the MAC Address of certain specific STA for AP, need make amendment to the Non-AP QSTAAddress parameter-definition of MLME-QoSMap.response primitive, the method of revising is: with this parameter modification is unicast address or multicast/broadcast address (this parameter is the multicast/broadcast address in the existing document), and this unicast address is exactly the MAC Address that receives the STA of this frame.
Adopt technical solution of the present invention, when terminal equipment takes place to upgrade at the mapping table of service quality of network side, can correctly judge whether to upgrade the local mapping table of service quality of preserving according to the identification information of mapping table of service quality; In addition, when the mapping table of service quality of network side took place to upgrade, network side issued the mapping table of service quality of renewal by mode of unicast, can realize that also terminal equipment correctly upgrades the local mapping table of service quality of preserving among the present invention; Adopt the present invention to avoid effectively since the terminal equipment mistake upgrade the mapping table of service quality of local preservation cause can not normal process service quality problem, thereby make terminal equipment to work more effectively.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (16)
1. the method for a distinguishing mapping table of service quality is characterized in that, comprises step:
Network side sends the message that comprises mapping table of service quality and identification information thereof;
Described message be network side receive the request mapping table of service quality message after send response message the time, the terminal equipment that receives this response message is preserved described mapping table of service quality and identification information thereof in this locality;
When described message is the updating message of network side transmission, the terminal equipment that receives described updating message determines that identification information in this message with after local identification information is consistent, utilizes the mapping table of service quality in this updating message to upgrade the local service quality mapping table.
2. the method for claim 1 is characterized in that, described message is the updating message that network side sends, and described terminal equipment this locality abandons described updating message when not having mapping table of service quality.
3. the method for claim 1 is characterized in that, the identification information of mapping table of service quality is the mapping table of service quality sign; Perhaps, described identification information is the multicast address that issues described message.
4. as right 3 described methods, it is characterized in that described mapping table of service quality is designated sign or the numeral that domain name, signing service provide network.
5. method as claimed in claim 3 is characterized in that, described identification information is that the destination address of described message is set to described multicast address when issuing the multicast address of described message.
6. as each described method of claim 1 to 5, it is characterized in that, in the frame of the service quality mapping configuration frame that network side sends, increase the mapping table of service quality identification field and carry described identification information; Perhaps, increase the mapping table of service quality identification field in the mapping table of service quality in described frame and carry described identification information.
7. as each described method of claim 1 to 5, it is characterized in that increase multicast address field or multicast address cell carry described identification information in the service quality mapping configuration frame that network side sends; Perhaps, increase the multicast address field in the mapping table of service quality in described frame and carry described identification information.
8. method as claimed in claim 7 is characterized in that, described multicast address cell comprises component identification field, length field and multicast address field.
9. the method for a updating service quality mapping table is characterized in that, comprises step:
Network side sends the updating message of the mapping table of service quality that comprises renewal by mode of unicast;
The terminal equipment that receives this updating message upgrades the local service quality mapping table according to the mapping table of service quality in this updating message.
10. method as claimed in claim 9 is characterized in that the destination address in the described updating message is set to the Media Access Control Address of described terminal equipment.
11. a network equipment is characterized in that, comprising:
Receiving element is used to receive the message that other communication equipments send;
Selected cell is used for according to request message or initiatively selection and corresponding mapping table of service quality of other communication equipments and identification information thereof;
Transmitting element is used to send the message that comprises described mapping table of service quality and identification information thereof.
12. the network equipment as claimed in claim 11 is characterized in that, the identification information of mapping table of service quality is the mapping table of service quality sign; Perhaps, described identification information is the multicast address of issuing message.
13. the network equipment as claimed in claim 12 is characterized in that, increases the mapping table of service quality identification field and carry described identification information in the frame of the service quality mapping configuration frame that sends; Perhaps, increase the mapping table of service quality identification field in the mapping table of service quality in described frame and carry described identification information.
14. the network equipment as claimed in claim 12 is characterized in that, increase multicast address field or multicast address cell carry described identification information in the service quality mapping configuration frame that sends; Perhaps, increase the multicast address field in the mapping table of service quality in described frame and carry described identification information.
15. a terminal equipment is characterized in that, comprising:
Receiving element is used to receive the message that comprises mapping table of service quality and identification information thereof;
Memory cell is used to preserve mapping table of service quality and identification information thereof;
Comparing unit, the identification information that is used for the mapping table of service quality of the identification information of mapping table of service quality of the message that will receive and preservation compares;
Updating block is used for when the identification information of the message that receives is consistent with the identification information of preservation, upgrades mapping table of service quality in the described memory cell according to the mapping table of service quality in the described message.
16. a communication system is characterized in that, comprising:
The network equipment is used for sending the message that comprises mapping table of service quality and identification information thereof to terminal equipment;
Terminal equipment is used for receiving response message after the message of network device requests mapping table of service quality, and preserves mapping table of service quality and the identification information thereof that carries in the described response message in this locality; Perhaps be used to receive updating message, and determine that identification information in this message with after local identification information is consistent, utilizes the mapping table of service quality renewal local service quality mapping table in this updating message.
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