CN104105225A - QoS mapping method for WiFi and WiMAX fused model - Google Patents
QoS mapping method for WiFi and WiMAX fused model Download PDFInfo
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- CN104105225A CN104105225A CN201410323036.3A CN201410323036A CN104105225A CN 104105225 A CN104105225 A CN 104105225A CN 201410323036 A CN201410323036 A CN 201410323036A CN 104105225 A CN104105225 A CN 104105225A
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Abstract
The invention relates to a QoS mapping method for a WiFi and WiMAX fused model. WiFi meets an IEEE802.11e standard, and WiMAX meets an IEEE802.16e standard. Mapping access equipment is arranged between WiFi and WiMAX networks. In the mapping access equipment, a one-to-one correspondence mapping table for service flow with the same service flow type and different service flow formats between WiMAX and WiFi is established. The WiFi and WiMAX networks respectively schedule service flow in a way of regarding service flow of the opposite-side network as service flow of the own network via a mapping relation. Mutual forwarding of data packets of the WiFi and WiMAX networks is realized via the mapping access equipment. According to the method, fusion of the WiMAX and WiFi networks can be realized via the mapping access equipment with MAC and PHY layer interfaces supporting WiFi and WiMAX simultaneously without modification of WIMAX base stations of the WiMAX network and client-terminal equipment in the WiFi network. Flow in the fused network is converged to the WIMAX base stations of the WiMAX network so that further bandwidth scheduling is facilitated. The method has advantages of being rapid in link establishment, low in deployment cost and high in use efficiency.
Description
Technical field
The present invention relates to network communicating system field, more particularly, relate to the QoS mapping method of a kind of WiFi and WiMAX Fusion Model.
Background technology
WiFi and WiMAX are the representatives of radio network technique, but the two exists again very significantly difference technically.The WiFi technology (IEEE802.11 series standard) only designing for WLAN (wireless local area network) access problem, although provide the transmission rate up to 54Mbps for limited geographical coverage (radius is 35 to 100 meters), because of its limited coverage area, cannot meet the demand of following Ubiquitous Network; For the designed WiMAX of the access problem of wireless MAN, though for the stationary nodes within the scope of 10km provides up to the data rate of 75Mbps, can maintain and in data rate and transmission range, have more flexibilities, but the often failure owing to penetrating barrier scarce capacity in indoor environment.
By the WiMAX not as WiFi by portability, for WiFi access point region provides go back to city, support, thereby greatly expand WiFi user's access scope.Therefore, merge these 2 kinds of standard techniques of WiFi, WiMAX, thereby create out a set of complete wireless solution, many a kind of trend providing in the mobile heterogeneous wireless network convergence scheme accessing is provided.
WiMAX network has been formulated WiFi-WiMAX interconnect standard, standard criterion Internet Service Provider's network architecture of simultaneously having disposed WiFi and WiMAX.The research of merging about WiMAX, the WiFi network architecture, the people such as Gakhar have proposed a kind of framework that ensures end-to-end QoS, and the QoS of survice demand by from WiFi network, is mapped to WiMAX network.Yet they do not provide any details of mapping function in actual deployment.The people such as Lin HT have proposed to have utilized a kind of a kind of fusion architecture of novel WiMAX/WiFi access point apparatus, with effectively in conjunction with WiMAX and WiFi technology, but the scheme in literary composition not only needs W2-AP equipment, also need to use the network interface card after upgrading at user side, increased lower deployment cost; And signaling is too much in communication process, do not have to the description that dispatching algorithm is provided yet.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the WiFi of fusion problem and the QoS mapping method of WiMAX Fusion Model of these two kinds of diverse standards of a kind of WiFi of solution and WiMAX is provided.
Technical scheme of the present invention is as follows:
The QoS mapping method of a kind of WiFi and WiMAX Fusion Model, WiFi meets IEEE802.11e standard, WiMAX meets IEEE802.16e standard, between WiFi and WiMAX network, mapping access device is set, in mapping access device, WiMAX is identical with the Business Stream classification between WiFi, the different Business Stream of Service stream formats is set up mapping table one to one, pass through mapping relations, WiFi and WiMAX network are used as the Business Stream of bipartite network respectively the Business Stream of one's own side's network to be dispatched, the packet of WiFi and WiMAX network forwards mutually by mapping access device.
As preferably, the framework of WiFi and WiMAX Fusion Model is two-layer structure, and what WiMAX adopted is PMP pattern, the mobile WiFi client in WiFi hot spot region, the base station that is connected to WiMAX by mapping access device, is provided the access service of the Internet by the base station of WiMAX; The base station of WiMAX belongs to ground floor to mapping between access device, and mapping access device belongs to the second layer to WiFi client in WiFi hot spot region, each place.
As preferably, adopt the mapping table method in horizontal QoS mapping, dissimilar Business Stream between WiMAX and WiFi network is sorted out to mapping, realize the mapping one by one of corresponding Business Stream classification between WiMAX and WiFi network.
As preferably, in mapping access device, be deployed with class of service mapping block, based on vertical QoS mapping method, set up the internetwork end-to-end stream of WiMAX and WiFi, once the request that WiMAX and WiFi inter-network traffic stream are set up is accepted, the packet of WiFi and WiMAX network is forwarded to bipartite network after processing by mapping access device mutually.
As preferably, the process of establishing of WiMAX and the internetwork end-to-end stream of WiFi is as follows:
1) receiving the WiFi client that newly flows request from upper strata, is MAC interpolation request message of foundation generation of stream, and this message comprises the business description information of new stream;
2) the WiFi MAC layer of mapping access device receives after request, and the class of service mapping block on upper strata adds request message transformation service descriptor to stream service by MAC, and generates a dynamic Service interpolation request.
3) base station of WiMAX, when receiving dynamic Service interpolation request, based on access control module, sends a dynamic Service and adds response, if connected, is accepted, and the base station of WiMAX is also flowed for this reason and sent a connection ID;
4) mapping access device receives connection ID, and sends an interpolation request response message with service flow ID to WiFi client, the information that the MAC of notice WiFi receives about stream.
As preferably, connection ID and service flow ID are realized mapping relations at class of service mapping block.
As preferably, shine upon access device and there is MAC and the PHY layer interface of supporting WiFi and WiMAX simultaneously, interface can be processed the packet from each automatic network separately.
As preferably, the framework of WiFi and WiMAX Fusion Model is the two-layer structure on Bandwidth sharing mechanism: the QoS of mapping access device mapping WiFi and the dissimilar flow of WiMAX network, gather from the bandwidth request of each WiFi client and send to the base station of WiMAX, the bandwidth request unification of the business in Fusion Model is distributed by the base station scheduling of WiMAX.
As preferably, the type that the mapping table of WiMAX and WiFi Business Stream comprises is as follows:
| The access type AC of WiFi | The traffic classifier TC of WiFi | The grade of service of WiMAX |
| AC_BK | TC1,TC2 | BE |
| AC_BE | TC0,TC3 | nrtPS |
| AC_VI | TC4,TC5 | rtPS，ertPS |
| AC_VO | TC6,TC7 | UGS |
Beneficial effect of the present invention is as follows:
Although WiMAX and WiFi are obviously different in QoS security mechanism, but by QoS mapping method---the QoS of survice mapping demand between heterogeneous networks is adopted to horizontal QoS mapping method, different agreement interlayer qos parameter transfer process in consolidated network is adopted to vertical QoS mapping method---design corresponding QoS mapping mechanism, can the two be merged realize at framework the interactive operation that ensures QoS between different layers and network entity.
Method of the present invention only need to have the WiFi of support and the MAC of WiMAX and the mapping access device of PHY layer interface simultaneously, can realize the fusion of WiMAX and WiFi network.Do not need the client device in the base station of the WIMAX of WiMAX network and WiFi network to modify.Traffic aggregation in UNE, to the base station of the WIMAX in WiMAX network, is conveniently further carried out the scheduling of bandwidth to it.
It is fast that the present invention has link establishment, and lower deployment cost is low, the advantage that service efficiency is high.
Accompanying drawing explanation
Fig. 1 is WiMAX and the internetwork Business Stream process of establishing of WiFi figure in the present invention;
Fig. 2 be in the present invention WiMAX and the internetwork middle packet of WiFi at the transmission diagram of each layer;
Fig. 3 is the fusion cage composition of the two-layer structure of WiMAX and WiFi in the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
The present invention is directed in conjunction with WiMAX and these 2 kinds of standards of WiFi, so that the demand of mobile Internet access to be provided, designed WiMAX/WiFi heterogeneous wireless network convergence framework, employing be PMP pattern, as shown in Figure 3.Here WiFi considers IEEE802.11e standard, and WiMAX considers IEEE802.16e standard.
The invention provides the QoS mapping method of a kind of WiFi and WiMAX Fusion Model, between WiFi and WiMAX network, mapping access device is set, in mapping access device, WiMAX Business Stream identical with the Business Stream classification between WiFi, that Service stream formats is different is set up to mapping table one to one, pass through mapping relations, WiFi and WiMAX network are used as the Business Stream of bipartite network respectively the Business Stream of one's own side's network to be dispatched, and the packet of WiFi and WiMAX network forwards mutually by mapping access device.Mapping access device has MAC and the PHY layer interface of supporting WiFi and WiMAX simultaneously, and interface can be processed the packet from each automatic network separately.
WiMAX is different with WiFi inter-network traffic stream format, therefore in the horizontal QoS mapping of employing, set up the method for mapping table, for the Business Stream of WiMAX and WiFi, set up unified mapping table, realize the mapping one by one of corresponding Business Stream classification between WiMAX and WiFi network, specifically as shown in table 1:
Table 1
Realize the module of the QoS mapping function of class of service between QoS mapping WiMAX and WiFi, be called class of service mapping block (or being called TC-MAP module), be deployed in and have on the WiFi of support and the MAC of WiMAX and the mapping access device of PHY layer interface (or being called AP equipment) simultaneously.So, while dispatching on the base station (or being called BS) of WiMAX, only WiFi Business Stream need be used as to the Business Stream of WiMAX and dispatch.Based on the vertical mapping method of QoS, the process of establishing of design WiMAX and the internetwork end-to-end stream of WiFi is as shown in Figure 1, as follows in concrete steps:
1) receiving the WiFi client that newly flows request from upper strata, is MAC interpolation request message of foundation generation of stream, and this message comprises the business description information of new stream;
2) the WiFi MAC layer of mapping access device receives after request, and the class of service mapping block on upper strata adds request message transformation service descriptor to stream service by MAC, and generates a dynamic Service interpolation request.
3) BS, when receiving dynamic Service interpolation request, based on access control module, sends a dynamic Service and adds response, if connected, is accepted, and BS also flows for this reason and sends a connection ID;
4) mapping access device receives connection ID, and sends an interpolation request response message with service flow ID to WiFi client, the information that the MAC of notice WiFi receives about stream.
Once the request that WiMAX and WiFi inter-network traffic stream are set up is accepted, the packet of WiFi and WiMAX network is forwarded to bipartite network after processing by mapping access device mutually.
The packet that the WiFi client of take is sent is example:
The packet that WiFi client upper strata produces is through MAC layer, PHY layer, radio to the WiFi PHY layer of AP equipment, by WiFi MAC layer, transfer TC-MAP module in AP equipment to again, the mapping relations of corresponding table 1 are shone upon processing, then give WiMAX module package again, by radioing to the WiMAX PHY layer of BS, in BS, to upper strata, submit gradually packet to afterwards.Like this, AP equipment just completed packet by WiFi network the transmitting procedure to WiMAX network; Similarly, can obtain packet by WiMAX network the transmitting procedure to WiFi network.
The framework of WiFi and WiMAX Fusion Model is two-layer structure, and what WiMAX adopted is PMP pattern, and the mobile WiFi client in WiFi hot spot region is connected to BS by mapping access device, and the access service of the Internet is provided by BS.
In AP its upper side, affixed one's name to class of service mapping TC-MAP module, so the QoS that has realized WiMAX network and the dissimilar flow of WiFi network by AP equipment shines upon.For WiMAX network, AP filling apparatus, will be from WiMAX network data transmission in WiFi network as SS role; For WiFi network, AP equipment plays relaying WiFi network data to the effect of BS, is about to WiFi network data transmission to Internet.Thus, formed a kind of heterogeneous wireless network convergence framework of two-layer structure, BS belongs to Level1 (ground floor) to AP equipment room, and AP equipment belongs to Level2 (second layer) to WiFi client in each hot spot region, place.Because AP equipment has been realized the QoS that shines upon 2 kinds of dissimilar flows of network, so on AP, gather from the bandwidth request of each WiFi client and send to BS, in whole network, the bandwidth request unification of business is by BS dispatching distribution; Therefore, this two-layer structure is also the two-layer structure on Bandwidth sharing mechanism.
Above-described embodiment is only for the present invention is described, and not as limitation of the invention.So long as according to technical spirit of the present invention, to above-described embodiment change, modification etc. all will drop in the scope of claim of the present invention.
Claims (9)
1. the QoS mapping method of a WiFi and WiMAX Fusion Model, WiFi meets IEEE802.11e standard, WiMAX meets IEEE802.16e standard, it is characterized in that, between WiFi and WiMAX network, mapping access device is set, in mapping access device, WiMAX is identical with the Business Stream classification between WiFi, the different Business Stream of Service stream formats is set up mapping table one to one, pass through mapping relations, WiFi and WiMAX network are used as the Business Stream of bipartite network respectively the Business Stream of one's own side's network to be dispatched, the packet of WiFi and WiMAX network forwards mutually by mapping access device.
2. the QoS mapping method of WiFi according to claim 1 and WiMAX Fusion Model, it is characterized in that, the framework of WiFi and WiMAX Fusion Model is two-layer structure, what WiMAX adopted is PMP pattern, mobile WiFi client in WiFi hot spot region, the base station that is connected to WiMAX by mapping access device, is provided the access service of the Internet by the base station of WiMAX; The base station of WiMAX belongs to ground floor to mapping between access device, and mapping access device belongs to the second layer to WiFi client in WiFi hot spot region, each place.
3. the QoS mapping method of WiFi according to claim 1 and WiMAX Fusion Model, it is characterized in that, adopt the mapping table method in horizontal QoS mapping, dissimilar Business Stream between WiMAX and WiFi network is sorted out to mapping, realize the mapping one by one of corresponding Business Stream classification between WiMAX and WiFi network.
4. the QoS mapping method of WiFi according to claim 2 and WiMAX Fusion Model, it is characterized in that, in mapping access device, be deployed with class of service mapping block, based on vertical QoS mapping method, set up the internetwork end-to-end stream of WiMAX and WiFi, once the request that WiMAX and WiFi inter-network traffic stream are set up is accepted, the packet of WiFi and WiMAX network is forwarded to bipartite network after processing by mapping access device mutually.
5. the QoS mapping method of WiFi according to claim 4 and WiMAX Fusion Model, is characterized in that, the process of establishing of WiMAX and the internetwork end-to-end stream of WiFi is as follows:
1) receiving the WiFi client that newly flows request from upper strata, is MAC interpolation request message of foundation generation of stream, and this message comprises the business description information of new stream;
2) the WiFi MAC layer of mapping access device receives after request, and the class of service mapping block on upper strata adds request message transformation service descriptor to stream service by MAC, and generates a dynamic Service interpolation request.
3) base station of WiMAX, when receiving dynamic Service interpolation request, based on access control module, sends a dynamic Service and adds response, if connected, is accepted, and the base station of WiMAX is also flowed for this reason and sent a connection ID;
4) mapping access device receives connection ID, and sends an interpolation request response message with service flow ID to WiFi client, the information that the MAC of notice WiFi receives about stream.
6. the QoS mapping method of WiFi according to claim 5 and WiMAX Fusion Model, is characterized in that, connection ID and service flow ID are realized mapping relations at class of service mapping block.
7. the QoS mapping method of WiFi according to claim 1 and WiMAX Fusion Model, is characterized in that, mapping access device has MAC and the PHY layer interface of supporting WiFi and WiMAX simultaneously, and interface can be processed the packet from each automatic network separately.
8. the QoS mapping method of WiFi according to claim 2 and WiMAX Fusion Model, it is characterized in that, the framework of WiFi and WiMAX Fusion Model is the two-layer structure on Bandwidth sharing mechanism: the QoS of mapping access device mapping WiFi and the dissimilar flow of WiMAX network, gather from the bandwidth request of each WiFi client and send to the base station of WiMAX, the bandwidth request unification of the business in Fusion Model is distributed by the base station scheduling of WiMAX.
9. the QoS mapping method of WiFi according to claim 1 and WiMAX Fusion Model, is characterized in that, the type that the mapping table of WiMAX and WiFi Business Stream comprises is as follows:
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