CN201025713Y - Mesh node and central controller for operation in wireless mesh network - Google Patents

Abstract

The utility model relates to a wireless communication system, disclosing a dot and central controller used to operate in a wireless mesh network in order to enable all the MPs in the internet to meet the resources/QoS requests of old or new talkings in the permitting process of a new TS wherein the wireless mesh network has a dispersed and/or concentrated permitting control structure. When the dispersed permitting control structure is used by the wireless mesh network, a source dot (S.MP) can send the request permitted by TS to require of special resources/quality of service (QoS) and the requirement can be transmitted via the wireless mesh network until reaching the destination dot (D.MP) and determining a permitting path. If one intermediate dot cannot provide the required resources/quality of service (QoS) to be used in the TS, the source dot (S.MP) can be informed to require the central controller of the path to D.MP while the central controller can maintain the dot status in the wireless mesh network and choose an optimal path to deal with the TS and provide the required resources/quality of service (QoS).

Description

Be used at site and central controller that based on wireless mesh network is operated

Technical field

In short, the utility model relates to wireless communication system.More specifically, the utility model is that the path basis traffic stream (TS) that relates in the meshed wireless telecommunication network that has concentrating or disperse the permission control architecture allows controlling organization.

Background technology

WLAN (wireless local area network, WLAN) mesh network is a wireless distribution system based on IEEE8021l (wireless distribution system, WDS), this wireless distribution system (WDS) comprise two or more by IEEE 802.11 links interconnect mesh point (mesh point, MP), and by the netted service of WLAN communicate.Fig. 1 has presented a typical WLAN mesh network 100, and described WLAN mesh network 100 comprises a plurality of mesh point, and MP 10, and MP 20, and MP 30, and MP 40, and MP 50, MP 60 and MP 70, and a plurality of gateway A, B and C.A plurality of MP in the WLAN mesh network 100, promptly MP 10, MP 20, MP 30, MP 40, MP 50, MP 60 and MP 70, in each MP receive and launch themselves traffic, the router of also serving as other MP simultaneously.Gateway A, B and C provide service to MP 10, MP 20, and MP 30, and MP 40, MP 50, MP 60 and MP 70 for example, comprise to provide and are connected to world-wide web, public exchanging telephone network (public switched telephone network, PSTN) and other wired or binding of wireless network.For instance, MP 50 and gateway A, B or C do not have immediate data to connect.MP 50 is by MP 20 and/or MP 30 and IAD A.

Still please refer to Fig. 1, WLAN mesh network 100 uses TS to allow control to guarantee that WLAN mesh network 100 can allow a plurality of TS that newly advance under the situation of not sacrificing transmission quality level at that time.In legacy network (legacy network),, then allow new service quality (QoS) TS request to allow control as long as access point (AP) can be supported resources/qos (QoS) request of TS.Yet, in mesh network, allow control must determine that all MP in this network can satisfy at that time or the resource of new conversation/QoS request in the permission process of new TS.

Therefore, need in based on wireless mesh network, implementation path be the method and apparatus of the TS permission control on basis.

The utility model content

The utility model proposes a kind of device that implementation path is controlled for the new route basis traffic stream permission on basis in based on wireless mesh network.Compared to existing technologies, by site and the central processing unit that the utility model proposed, allow to control all sites that to determine in mesh network and in the permission process of new route basis traffic stream, all satisfied at that time or the resources/qos request of new conversation.

The utility model is to relate to the device that disperses and/or concentrate TS permission control in execution route basis in the meshed wireless telecommunication network that allows control architecture having.When the based on wireless mesh network use disperseed to allow control architecture, a source MP (S.MP) can launch one at TS to be asked so that request resource/QoS at that time.This request is propagated by this mesh wireless network, up to arriving at a purpose MP (D.MP) and having determined one to allow the path.If MP can't meet request resource/QoS of TS in the middle of one, then S.MP can be apprised of.When the permission control architecture was concentrated in the based on wireless mesh network use, a source MP (S.MP) can ask the path from a central controller to D.MP.This central controller is kept the MP state in the based on wireless mesh network, and selects an optimal path so that control TS satisfies the requested resource/QoS of institute.

Above-mentioned purpose can be reached via a kind of site of operating in based on wireless mesh network provided by the utility model, and described site comprises:

One antenna;

One reflector, itself and described antenna electric coupling are used for sending and allow the control message;

One receiver, itself and described antenna electric coupling are used for receiving and allow the control message;

One processor, itself and described receiver and described reflector electric coupling are used to control described receiver and described reflector; And

One control allows the unit, itself and described processor electric coupling, and described permission control unit comprises:

One first information processor, construction are used for the transmission of described reflector and handle increase traffic stream information by described recipient was received produce to increase traffic stream information;

One explorer is built enough in to judge the request resource/service quality requirement whether a traffic stream can be provided based on the information that is provided by number first information processor; And

One second message handler, construction are used for the transmission of described reflector and handle deletion traffic stream information by described recipient was received to produce deletion traffic stream information.

In addition, when the permission control architecture is concentrated in the based on wireless mesh network use, then can reach above-mentioned explanation via a kind of central controller of in based on wireless mesh network, operating of the present utility model.Described central controller comprises:

One antenna;

One reflector, itself and described antenna electric coupling are used for sending and allow the control message;

One receiver, itself and described antenna electric coupling are used for receiving and allow the control message;

One processor, itself and described receiver and described reflector electric coupling are used to control described receiver and described reflector; And

One control allows the unit, itself and described processor electric coupling, and described permission control unit comprises:

One resource database, construction with the storage with described based on wireless mesh network in the relevant resource information in a plurality of sites;

One optimal path selection device is in order to select an optimal path and correspondingly to notify described resource database; And

One message handler, construction is counted sending out song and handling increase traffic stream information and the renewal resource database relevant with available resources that is received by the number receiver of reflector to produce increase traffic stream information to be used for.

Description of drawings

The utility model can be by considering following example in light of actual conditions preferred embodiment explanation and understanding more at large, and can be in conjunction with appended graphic and obtain to understand, wherein:

Fig. 1 presents a typical WLAN mesh network;

Fig. 2 is according to a preferred embodiment of the present utility model and the program flow diagram that implementation path is controlled for the TS permission on basis in the WLAN mesh network with dispersion permission control architecture;

Fig. 3 is a signal flow graph, its drawn one in having the WLAN mesh network that disperses to allow control architecture implementation path allow the example of the S.MP of control for the TS on basis, can to satisfy with Fig. 2 method be that a new TS request/QoS that S.MP was produced of foundation asks to MP in the middle of wherein a plurality of;

Fig. 4 is a signal flow graph, it has drawn a S.MP example that implementation path is controlled for the TS permission on basis in the WLAN mesh network with dispersion permission control architecture, and it is a new TS request resource that S.MP was produced/QoS request of foundation that one of them middle MP can't satisfy with another embodiment of the present utility model;

Fig. 5 is according to another preferred embodiment of the present utility model and the program flow diagram that implementation path is controlled for the TS permission on basis in having the WLAN mesh network of central controller;

Fig. 6 is a signal flow graph that allows control in have the WLAN mesh network of concentrating the permission control architecture based on the method for Fig. 5 based on the TS in path;

Fig. 7 is the exemplary block diagram of a MP, and described MP is used for implementing dispersion based on the utility model and allows the control based on wireless mesh network and/or concentrate to allow the permission control of control based on wireless mesh network among both; And

Fig. 8 is the exemplary block diagram of a central controller, and described central controller is that to be used for carrying out with the utility model be that the TS based on the path allows to control in the WLAN mesh network that concentrate to allow control architecture according to having.

Embodiment

Though feature of the present utility model and assembly are to be described in preferred embodiment with specific compound mode, but each feature or assembly still can use (not having under the further feature or the situation of assembly) alone, or can use, or can be other various application with further feature of the present utility model and combination of components mode together at other further feature various and of the present utility model and combination of components mode together.

When consulting following content, term " MP " comprises (but not limiting to) WTRU, user's equipment (UE), mobile radio station, fixing or moving user unit, beeper, user stand (STA) or other types of devices that can operate under wireless environment.When consulting following content, term " AP " comprises (but not limiting to) Node B, base station, positioner or the interface arrangement of other type that can operate under wireless environment.

The utility model is at the method and apparatus that allows control based on the TS in path.In a preferred embodiment of the present utility model, a WLAN mesh network is to comprise to disperse to allow control architecture.Therefore, controlling the function that TS allows with respect to implement the WLAN mesh network on a middle position, each MP of this WLAN mesh network shares the responsibility that control TS allows.

Fig. 2 is the flow chart that implementation path allows the program 200 of control for the TS on basis according to a preferred embodiment of the present utility model and in having the WLAN mesh network that disperse to allow control architecture.In this embodiment, a S.MP asks to activate TS by an initial resource/QoS who is destined to a D.MP.One of this S.MP emission increases TS request (ADDTS Req) information to generally acknowledging that one reception MP in the path is so that D.MP (step 210).Whether reception MP then just determines this TS can be allowed or whether this TS can be return (step 220).If TS can be allowed, then receive MP then decision whether to permit having than request and be the TS of resource/QoS of lacking (that is adjusted or lower QoS) (step 230).

Whether MP can use following permission parameter of regularity to decide the requested resource/QoS of institute can meet the requirements.The parameter that will be appreciated that following tabular is not that all they are exemplary, and multiple parameter may be used in the combination of wanting of what is the need in office.

4) channel occupancy: the channel that different MP measure them uses, and is defined as percentage of time, and the physical layer sensing is medium busy, and mat physics or virtual carrier sense mechanism are represented.

5) buffering takies: the buffering of its own access level sequence of being asked of MP measurement takies.

6) connection situation: MP measures emission again, lose confirm (ACK) or fellow frame number.

In a preferred embodiment, the utility model uses channel occupancy (CO) to decide a predetermined MP whether can satisfy one request resource/QoS.Each MP continuously or dynamic ground or with the fate every measure CO.If after allowing a TS, MP CO still can maintain and be lower than CO threshold value, CO _Threshold, then can allow this TS by a predetermined MP.This can represent with following:

CO _Current+ Δ CO＜CO _ThresholdEquation (1)

Wherein, CO _CurrentBe the CO before allowing TS, Δ CO is the variation that occurs at CO because allow TS, and CO _ThresholdIt is the predetermined or dynamic threshold that predetermined MP can not surpass and still can guarantee request resource/QoS.

Can supply alternatively, CO allows parameter to use on predetermined MP by TS.In this mode, MP can carry real-time service at one, the sound by Internet protocol (VoIP) for example, predetermined TS and select a more eager CO _ThresholdFor conclusive permission control, each TS may need quota as follows:

${\mathrm{<figure-callout\; id="1"\; label="CO\; TS"\; filenames="Y20062000495700201.png"\; state="\{\{state\}\}">CO</figure-callout>}}^{\underset{}{\mathrm{TS}}}+{\mathrm{\&Delta;<figure-callout\; id="1"\; label="CO\; TS"\; filenames="Y20062000495700201.png"\; state="\{\{state\}\}">CO</figure-callout>}}^{\mathrm{TS}}<{\mathrm{<figure-callout\; id="1"\; label="CO\; TS"\; filenames="Y20062000495700201.png"\; state="\{\{state\}\}">CO</figure-callout>}}^{\underset{}{\mathrm{TS}}}$ Equation (2)

Among both, the calculating of Δ CO must be considered input and the output effect that TS allows at equation 1 and 2.For MP in the middle of, allow control still to consider MP and handle the ability of input TS (that is input allows control) and the ability of emission output TS (that is output allows control).For a S.MP, only need then to consider that output allows control.For a D.MP, only need then to consider that input allows control.

Still see also Fig. 2, do not allow (that is returning) this TS in step 220 decision, then receive ADDTS Resp information of MP emission and be back to the S.MP (step 240) that points out to return reason if receive MP.Program 200 is then got back to step 210, allows S.MP by may adjusted resource/QoS or interchangeable permission path and start program 200.

Allow this TS if receive MP in step 220, but do not allow to have request resource in step 230/TS of QoS request, then, receive ADDTS Resp information of MP emission to pointing out that one adjusted the S.MP (step 250) that resource/QoS proposes being back to step 210 with before further moving by .MP.If in step 230, know that by receiving MP this request resource/QoS meets demand, will judge then then whether present MP in fact is exactly D.MP (step 260).If not, then receive MP ADDTS Req information of emission in allowing the path and give next MP, and program 200 is got back to step 220 to judge the TS permission by next MP.Not necessarily, MP sends an ADDTS Resp information to the S.MP (step 265) that points out success now.

If described reception MP in fact is D.MP, described subsequently D.MP transmits a path by any paths and allows (PA) response (PA Resp) information to give S.MP (step 280).Described S.MP is just preparing to bring into use described permission path and described D.MP to carry out a conversation (step 290) now.

Although this does not need, a PA Resp timeout mechanism is preferably and is implemented among the described S.MP.When implementing its timeout mechanism, when described S.MP transmits described ADDTS Req information initially and activate a timer.And if when not receiving described PA Resp before a default timeout threshold, described S.MP can abandon described ADDTSReq information and optionally along identical or another allows path to transmit another ADDTS Req information.Relative, when described S.MP receives described PA Resp, and if when postponing request and can not be satisfied, described delay can be measured by the time mark that described PA Resp and described TS stop.

Fig. 3 is a signal flow graph, this is that the S.MP execution route that is illustrated in a WLAN mesh network 300 is the example that basic TS allows control, described WLAN mesh network 300 has a distributed permission control architecture, MPs can satisfy a new TS wherein describedly requires resource/QoS request, and this is that flow process 200 according to Fig. 2 produces by a S.MP.Described WLAN mesh network 300 comprises a S.MP 302,304,306 and D.MP 308 of the middle MPs of plural number.MP 304,306 can satisfy by described S.MP 302 desired described resource/QoS in the middle of each.Described S.MP 302 transmits an ADDTS Req information and requires resource/QoS (step 310) to described MP 304 to indicate out one.It can meet the described resource/QoS that requires described MP 304 decisions, and transmits an ADDTS Req information to described MP 306 (step 330).Described MP 304 also can optionally transmit an ADDTS Resp information and get back to described S.MP 302 to point out the successful permission (step 320) of described TS by described MP 304.It can meet described MP 306 decisions the described of described TS and require resource/QoS and transmit an ADDTS Req information to described D.MP 308 (step 350).Described MP 306 also optionally transmits an ADDTS Resp information and gets back to described S.MP 302 to point out the successful permission (step 340) of described TS by described MP 306.Described MP 308 decisions its can meet described require resource/QoS request and transmit a PA Resp information to described S.MP 308 indicating described permission path (step 360), and prepare to begin (step 370) now in the conversation of described S.MP 302 and described D.MP 308.

Fig. 4 is a signal flow graph, it is that the S.MP execution route that is illustrated in a WLAN mesh network 400 is the example that basic TS allows control, described WLAN mesh network 400 has a distributed permission control architecture, MPs can not satisfy a new TS wherein describedly requires resource/QoS request, and this to be flow process 200 according to Fig. 2 produce by a S.MP.Described WLAN mesh network 400 comprises a S.MP 402,404,406,408 and D.MP 410 of the middle MPs of plural number.Described S.MP 402 transmits an ADDTS Req information and requires resource/QoS (step 420) to described MP 404 to indicate out one.It can meet the described resource/QoS that requires described MP 404 decisions, and transmits an ADDTS Req information to described MP 406 (step 430).Described MP 404 also can optionally transmit an ADDTS Resp information and get back to described S.MP 402 to point out the successful permission (step 425) of described TS by described MP 404.Described MP 406 receives described ADDTS Req from described MP 404, but determine it can not meet the described resource/QoS that requires of described TS, and transmit an ADDTS Req information to described S.MP 402 comprising the reason (step 435) of refusal, (for example: transmit queue always full, the resource that requires exceeds a set restriction, can not meet desired resource/QoS request etc. is suchlike).And in step 435 by described MP 406 be sent to the described ADDTS Resp information of described S.MP 402 relative can comprise a proposal revising resource/QoS that can allow for described MP.

Please continue with reference to figure 4, receive described ADDTS Resp information according to step 435 from described MP 406, described S.MP 402 determines a heart of getting rid of described MP 406 to allow the path, this is because described MP 406 can not handle described TS at all, or removes to meet the described resource/QoS that is proposed by described MP because described S.MP 402 is unwilling to reduce its resource/QoS request.Described S.MP 402 transmits another ADDTS Req subsequently and requires resource/QoS and the information (step 440) that provides about a new route walking around described MP 406 to indicate one for described MP 406.It can meet described MP 404 decisions and describedly require resource/QoS and transmit an ADDTS Req information and give described MP 408 (step 450).Described MP 404 also can optionally transmit an ADDTS Resp information and get back to described S.MP 402 to point out the successful permission (step 445) of described TS by described MP 404.It can meet described MP 408 decisions the described of described TS and require resource/QoS and transmit an ADDTS Req information to described D.MP410 (step 460).Described MP 408 also optionally transmits an ADDTS Resp information and gets back to described S.MP402 to point out the successful permission (step 455) of described TS by described MP 408.Described MP 410 decisions its can meet described require resource/QoS request and transmit a PA Resp information to described S.MP 402 indicating described permission path (step 465), and prepare to begin (step 470) now in the conversation of described S.MP 402 and described D.MP 410.

In another embodiment of this creation, concentrating TS to allow control architecture is to implement in a WLAN mesh network.At this type of WLAN mesh network, a central controller is carried out described TS to described whole WLAN mesh network and is allowed controlled function.

Fig. 5 is the program that allows control according to the execution route in having a WLAN mesh network of a central controller of another embodiment of this creation for the TS on basis.When a S.MP wants to create TS to D.MP, described S.MP transmits an ADDTS Req information to described central controller, and it comprises resource/QoS and D.MP identification (step 510).Described ADDTS Req information comprises the identification of required resource/QoS and described D.MP.Described central controller select described optimal path with in described mesh network based on the knowledge of control policy and available path and satisfy resource/QoS that described S.MP wants and ask (step 520).And in step 530, will make about in fact whether satisfy a decision by the desired described required resource/QoS of described S.MP by the selected described optimal path of described central controller.If the selected described optimal path of described central controller does not satisfy by the desired described required resource/QoS of described S.MP, described central controller transmits one increases TS modification (ADDTS Mod) information to described S.MP (step 540).Described ADDTS Mod information comprises the available resource/QoS of present described mesh network.In step 545, will make a decision that whether can allow described S.MP receive about described modification resource/QoS.If the decision in step 545 is sure, described program 500 can be got back to step 510 subsequently, and wherein said S.MP can transmit an ADDTS Req information of revising resource/QoS request that has based on described ADDTS Mod information once more.And if described decision is negated, described program 500 stops.

If it is decision in step 530 that the resource of described S.MP/QoS request can be satisfied in selected path, one of described central controller transmission increases TS approval (ADDTS approval) information to described S.MP and all middle MPs (step 550) of comprising selected path.Each MP that receives described ADDTS approval determines whether it can satisfy required resource/QoS (step 560).If MPs has any one can not support required resource/QoS in the middle of described, the described MPs that can not satisfy required resource/QoS then transmits increase TS refusal (ADDTS refusal) information to a described central controller and can't meet required resource/QoS with the ability of pointing out described MPs.The central controller of described program 500 is subsequently with step 540 and step 545 as previously described and handle.If all intermediate nodes determine them can satisfy required resource/QoS in step 560, the conversation along selected path from described S.MP to the TS of described D.MP now can (step 580).

Fig. 6 is a signal flow icon that allows control in the WLAN mesh network 600 based on the TS in path, and wherein this WLAN mesh network 600 has the central authorities' permission control structure according to the step running of Fig. 5.This WLAN mesh network 600 comprises a S.MP602, middle MP604, a D.MP606 and a central controller 608, this S.MP602 send an ADDTS Req information to this central controller 608 requiring to have the TS (step 610) of this D.MP606, this central controller 608 is checked an internal database of available resources and is determined load on the different paths between this S.MP602 and this D.MP606.This central controller 608 is selected this path with the resource/QoS metric system of the best, and upgrades its resource database.This central controller 608 sends an ADDTS who comprises a TS ID and approves that information and one resource/QoS ask to this S.MP602 (step 615), transmission one ADDTS approval information is to this centre MP604 (step 620) and send ADDTS approval information to this D.MP606 (step 625).From this this ADDTS approval of central controller 608 receptions the time, this MP604 and this D.MP606 check available resources.In this example, this MP604 and this D.MP606 have the ability that satisfies this resource/QoS request, and a session meeting starts between this S.MP602 and this D.MP606 (step 630) via middle site MP604 immediately.

Yet, when if this MP604 and this D.MP606 one of them or none method satisfy this resource of desired this ADDTS approval information/QoS, this MP604 and this D.MP606 just can send ADDTS Rej information to this central controller 608 (step 635,640).This MP604 sends an ADDTS Rej information to this central controller 608 (step 635), and this central controller 608 comprises resource/QoS that this MP604 can satisfy at present.Similarly, this D.MP606 sends an ADDTS Rej information to this central controller 608 (step 640), and this central controller 608 comprises resource/QoS that this D.MP606 can satisfy at present.These central controller 608 its resource databases of renewal and the ADDTS Mod information that sends are to this S.MP602, and this S.MP602 comprises available resources/QoS (step 645) best for a TS who delivers to this D.MP606.This S.MP602 then just can send an ADDTS Req information (step 650) that comprises new resource/QoS request.Till these steps can be repeated until that the resource/QoS that can be satisfied is reached and a session begins.

Selectively, for resource being discharged back this mesh network 600, when a session finishes (step 660), this S.MP602 can send a deletion TS and require (DELTS Req) information to this central controller 608 (step 665); This central controller 608 can upgrade its resource database according to this, and the DELTS Req information that sends finishes this TS (step 670) to this MP604 to indicate this MP604.Similarly, this central controller 608 sends a DELTS Req information to this D.MP606, finishes this session (step 675) to indicate this D.MP606.The another kind of selection is to use a TS to suspend mechanism resource is discharged back this mesh network 600; For instance, as TS in the session during by idle time that surpasses a predetermined length, this session just can be moved to end and this resource can be released back this mesh network 600.

Fig. 7 is that the utility model allows to control an embodiment calcspar of carrying out a MP700 of permission control in based on wireless mesh network and/or the central authorities permission control based on wireless mesh network in order to distribute one, and this MP700 comprises an antenna 705, a receiver 710, a processor 715, a reflector 720 and a permission control unit 730.This processor 715 is controlled the function of these receivers 710 and this reflector 720 and is allowed control unit 730 to form interfaces with this, and this permission control unit 730 comprises a message handler 740, a resource (QoS) manager 750 and a PA message handler 760.

Distribute to allow among the control based on wireless mesh network one, during MP, this message handler 740 can produce ADDTS Req information in the middle of this MP700 is a S.MP or one.When this MP700 is that this message handler 740 can produce optionally ADDTS Resp information as the time spent of a middle MP.When a refusal or when revising resource/QoS and being provided, this resource (QoS) manager 750 of resource/QoS that this message handler 740 can notice be provided.

Among a based on wireless mesh network that uses central authorities permission controller, these message handler 740 generation ADDTSReq information and ADDTS Rej information are to be sent to this central controller, this message handler 740 is further handled the ADDTS approval and the ADDTS that are received by this central controller and is revised information, and this resource (QoS) manager 750 of required or the resource that provided is provided.

The available resources of this resource (QoS) manager 750 these MP700 of decision are such as CO, buffer occupation rate or the like.This resource (QoS) manager 750 decision whether resource/QoS request of an ADDTS Req information can be satisfied by this MP700.When the special CO of TS was used to determine whether to allow a TS, this resource (QoS) manager 750 can determine the CO of each TS, as previously described.When this MP700 is this S.MP of a TS, this resource (QoS) manager 750 further determines to be applied to the desired resource/QoS of ADDTS Req information, and the information that is provided by this message handler 740 is used with the resource of managing this MP700 and to other MP in this based on wireless mesh network and proposes suitable resource requirement.

Using central authorities to allow among the based on wireless mesh network of controller, when this MP700 was this S.MP of the TS that is moved to end, a PA message handler 760 can produce DELTS Req information to be sent to this central controller.When this MP700 was a centre MP, this PA message handler 760 was handled the DELTSReq information that is received by this central controller.These PA message handler 760 notices are released this resource (QoS) manager 750 of resource.

Among a based on wireless mesh network that uses distribution permission control structure, when this MP700 was this D.MP, this PA message handler 760 can generation PA Resp information.When this MP700 was this S.MP, this PA message handler 760 also can be carried out any time-out mechanism and comprise the PA Resp information in this permission path with reception, as forenamed path.When this MP700 is this S.MP, when this PA Resp information of reception, this resource (QoS) manager 750 of this Resources allocation in this permission path when this PA message handler 760 can notify this session to begin.

Fig. 8 is that the utility model is in order to carry out an embodiment calcspar of a central controller of controlling based on the TS permission in path in the WLAN mesh network with a central permission control structure.This central controller 800 is logic entities, and it can be implemented among any MP or be made into is a separate entities.This central controller 800 comprises that an antenna 805, a receiver 810, a processor 815, a reflector 820 and allow control unit 830.This processor 815 is controlled the function of these receivers 810 and this reflector 820 and is allowed control unit 830 to form interfaces with this, and this permission control unit 730 comprises a resource database 840, an optimal path selection device 850 and a message handler 860.

This resource database 840 stores the resource information of all MP in these mesh networks and keeps existing resource/QoS ability of all MP, and this resource database 840 can be from such as inquiry, synchronizing signal, beacon response and by approving that by these ADDTS message handler 860 handled receptions ADDTS Req information, ADDTS information and ADDTSRej information obtain resource information.

This optimal path selection device 850 calculates the telephone traffic on the different paths between this S.MP and this D.MP, resource/QoS request of and this TS preferential based on the telephone traffic of being calculated, system operator, this optimal path selection device 850 can be selected optimal paths and notify this resource database 840 according to this.

This message handler 860 produces ADDTS approval information respectively in response to ADDTS Req information and ADDTS Rej information and ADDTS revises information.When available resources were returned in this mesh network, this resource database 840 can be notified and upgrade to this message handler 860.This message handler 860 also can produce DELTS Req information with in response to MP in the middle of being sent to from the received DELTS Req information of this S.MP.These message handler 860 notices are released this resource database 840 of resource.

Above-mentioned this permission control unit 730 and 830 function also can be integrated in the integrated circuit (IC) or be configured to a circuit that comprises a plurality of assemblies connected to one another.

In another embodiment of the present utility model, comprised in the ADDTS Req information that is sent by a S.MP that one of each access type allows control to force (ACM) field, MP knew whether this AC of this TS requires to allow control in the middle of this ACM field can allow.If require to allow control, do not need resource/QoS to guarantee just this TS can directly be sent or consult, this is particularly useful for not requiring on sending the shortest low priority data (for example: large-scale archives send) when latent.

The utility model must be thought and is to modify right neither taking off as Protector that attached claim is desired as all by the personage Ren Shi craftsman who is familiar with this skill.

Claims (2)

1. one kind is used for the site of operating at a based on wireless mesh network, it is characterized in that described site comprises:

One antenna;

One reflector, itself and described antenna electric coupling are used for sending and allow control information;

One receiver, itself and described antenna electric coupling are used for receiving and allow control information;

One processor, itself and described receiver and described reflector electric coupling are used to control described receiver and described reflector; And

One allows control unit, itself and described processor electric coupling, and described permission control unit comprises:

One first information processor, construction are used for the transmission of described reflector and handle increase traffic stream information by described receiver was received produce to increase traffic stream information;

One explorer, construction is to judge the request resource/service quality requirement whether a traffic stream can be provided based on the information that is provided by described first information processor; And

One second message handler, construction are used for the transmission of described reflector and handle deletion traffic stream information by described receiver was received to produce deletion traffic stream information.

2. one kind is used for the central controller operated at a based on wireless mesh network, and wherein said based on wireless mesh network has concentrated traffic stream and allows control architecture, it is characterized in that described central controller comprises:

One antenna;

One reflector, itself and described antenna electric coupling are used for sending and allow control information;

One receiver, itself and described antenna electric coupling are used for receiving and allow control information;

One processor, itself and described receiver and described reflector electric coupling are used to control described receiver and described reflector; And

One allows control unit, itself and described processor electric coupling, and described permission control unit comprises:

One resource database, construction with the storage with described based on wireless mesh network in the relevant resource information in a plurality of sites;

One optimal path selection device is in order to select an optimal path and correspondingly to notify described resource database; And

One message handler, construction is produce to increase traffic stream information with the transmission that is used for described reflector and handle increase traffic stream information and the renewal resource database relevant with available resources by described receiver was received.

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