CN101208905A

CN101208905A - QoS management in wireless mesh networks

Info

Publication number: CN101208905A
Application number: CNA2006800075196A
Authority: CN
Inventors: 凯瑟琳·利菲; 文森·罗伊; 朱安·C·强尼加
Original assignee: InterDigital Technology Corp
Current assignee: InterDigital Technology Corp
Priority date: 2005-03-11
Filing date: 2006-03-09
Publication date: 2008-06-25
Also published as: CN200947609Y; DE202006003829U1; AR052689A1; TW200704024A; KR20060099473A; TWM312845U

Abstract

A mesh network includes a plurality of mesh points (MPs), a central database (DB) and a central controller (CC). The MPs are configured to broadcast quality of service (QoS) information over a wireless medium. Each MP may request QoS information directly from at least one other one of the MPs. The MPs store QoS information in the central DB and are configured to query the central DB QoS information associated with any of the MPs. Thus, QoS information is shared throughout the mesh network, and QoS policies are defined and updated where an MP may co-exist with another MP, an MP may co-exist with systems external to the mesh network, and an MP may co-exist with mesh access points (MAPs).

Description

QoS management in the based on wireless mesh network

Technical field

The present invention is about a kind of wireless communication system, and more especially, the present invention system strengthens it about a kind of media access control (MAC) layer quality management (QoS) of netted application makes that QoS information is shared, and the QoS policy is defined.

Background technology

The service that original system of WLAN (WLAN) system is designed to provide best to be guaranteeing the fairness of all user's access wireless media, this be shown in the mode that provides QoS reply user to guarantee only insert consider slightly and each user's qos requirement between difference can pass through this consideration.Because use wlan system to use as procotol voice protocol (VoIP) and the growth of real-time video signal demands of applications to support QoS-to drive, standardization such as IEEE802.11e form to emphasize this subject under discussion.

In addition, wlan network is developing to adopt netted mode to be incorporated between the wireless backhaul circuit connection access point (APs), and this cancellated advantage is for providing low-cost, being easy to use and dispose fast.The expectation mesh network can be faced the qos requirement identical with other wlan system.

Summary of the invention

The present invention is a kind of mesh network, and it comprises a plurality of mesh point (MPs), central database (DB) and central controller (CC).MPs system is configured as propagating QoS information on wireless medium.Each MP can be directly requires QoS information from one of them of other MPs, this MPs stores QoS information in this center DB and be to be configured as inquiring that this center DB is about following the QoS information of any MPs, so QoS information is shared and the QoS policy is defined and upgrades everywhere at mesh network.A MP can exist jointly with another MP, and a MP can exist jointly with another MP that is the system of this mesh network outside, and a MP can exist with mesh access points (MAPs) is common.

Description of drawings

More detail knowledge of the present invention can be obtained by the narration as the following preferred embodiments of example, and can understand with correlative type, wherein:

One according to the present invention specific embodiment of Fig. 1 explanation uses the difference of the QoS information exchange of signaling at the mesh network that comprises a plurality of MPs, center DB and CC to implement;

The netted QoS of another specific embodiment signalling carrying out fits property and upgrades the difference of operating and implement according to the present invention in Fig. 2 explanation;

The suitable property of multiple netted QoS policy of Fig. 3 explanation another specific embodiment according to the present invention;

Fig. 4 illustrate a kind of incident wherein according to the present invention another specific embodiment mesh network configurable in the already present position of IEEE802.11e network; And

The suitable property of Fig. 5 explanation netted QoS policy of another specific embodiment exterior I EEE 802.11eQoS policy data according to the present invention.

Embodiment

Preferred embodiment can with reference to graphic narration it, wherein at the similar assembly of similar numeral in full.

After this, title " client STA " include but not limited to wireless transmission/receiving element (WTRU), subscriber equipment (UE), mobile radio station, fixing or moving user unit, beeper or can be at the device of any other form of wireless environment operation.

When hereinafter mentioning, AP includes but not limited to node-b, base station, base station controller or at the interface device of any other form of wireless environment.

When hereinafter mentioning, title " back haul link " be illustrated in mesh point (MPs) however between the radio interface title " client's access " interface between expression AP and the client STA, it also is known as basic service set (BSS).Though with reference to IEEE 802.11e and IEEE 802.11 standard group and file, the present invention also can be applicable to support any mesh architecture of QoS policy.

Characteristic of the present invention can be incorporated integrated circuit (IC) and configurable in the circuit that comprises numerous intermediate interconnection assemblies into.

A kind of QoS mechanism that strengthens distributed channel access (EDCA) that is called of IEEE 802.11e standardization based on priority, its bright fixed required mechanism and signalling distribute the information of required radio frequency resource to the ability of this STA by this AP and commutative application requirements and the AP about the user of relative clients STA thereof.

At mesh network, can between a plurality of MPs, APs and STAs, share in this wireless medium, present skill can produce two major issues:

1) be used for lacking degree of coherence between the QoS policy of back haul link radio interface, the connection between standard A P and STA thereof should look decide and from one of them because AP orders this relevant STAs to use the priority policy that has given.By definition, a plurality of MPs of the most tools of mesh network share same wireless medium.In this kind system, the connection between MPs approaches equal one of them, and this opens possibility of the different MPs that use the different priorities policy and thereby with failure mode competition radio frequency resource.

2) between the QoS policy that is used for back haul link and client's access wireless interfaces, lack degree of coherence, this mesh backhaul, (in this MPs and MPs talk), and client's access wireless interfaces, (communicating by letter with AP in this client STA) can coexist as identical systems.Back haul link and client's access are all opened two series of strata all replace mutually rectangular formula competition radio frequency resource with failure mode possibility in the fact of same channel operation.

At a specific embodiment, to implement to signal, it makes QoS information exchange at mesh network, the QoS information of using the method to share can include, but are not limited to:

1) the employed QoS structure parameters of MP, for example, in CSMA mechanism, these can be corresponding to different EDCA parameter group, or are used for the channel access parameter group of each QoS grade as competition MP when sharing medium.Be similar to IEEE 802.11e access strategy (AC), ACs can be to a mesh network definition, (as Mesh_AC1, Mesh_AC2, Mesh_AC3, Mesh_AC4), and can suppose same form to being applied to priority flag at IEEE 802.11d, (User Priority (UP)), and corresponding between the netted AC.The parameter of definition EDCA QoS policy, as compete preceding minimum idle delay, (arbitration frame period number (AIFSN)) reaches minimum and maximum contention window (CWs), (Cwmin and CWmax), and transmission opportunity (TXOP) limiting parameter is different to each AC in the MP.This information also can include, but not limited to the affirmation of mesh network support reply and allow two or their QoS policy of how different MPs synchronization be predetermined principle.

The example that this kind is predetermined principle is: i) when following two MPs, this MPs can make the EDCA parameter group of the MPs (that is MP of tool maximum difference of EDCA parameter group between QoS ACs) of the maximum QoS policy of distinguishing of apparatus; Ii) when following two MPs, this MPs can use the EDCA parameter group as maximum duration MP initiatively; Iii) when following two MPs, this MPs can use the EDCA parameter group of the MP of the most approaching door; And iv) when following two MPs, this MPs can use the EDCA parameter group of the MP that supports that news at most are engaged in, or it is similar.

2) about information by MP institute Resources allocation.Can include, but not limited to distribute chronomere, package number, byte number, news affair flow amount, channel utilization, AC buffering to occupy rate in order to the example of expression allocated resource measure, or it be similar.All these information can provide according to AC.

3) about information by resource that MP uses.Can in order to the example of expression through using resource measurement include, but not limited to delivery time, channel occupy rate, the package number that transmits, the byte number that transmits, interrogate the affair flow amount, channel utilization, AC cushion and occupy rate, or it is similar.All these information can provide according to AC.

4) it is passed on, (that is back haul link), each of link is by the quality of MP institute experience.Can include, but not limited to time flutter, time relay, packet error, flow, Queue time in order to the example of the tolerance of expression MP institute experience quality or it is similar.

5) be used to the QoS policy of the coexistence IEEE 802.11e client access wireless interfaces of this mesh network outside, (as the EDCA parameter group).

6) be used to the QoS policy of the IEEE 802.11e client access wireless interfaces of this netted APs, (as the EDCA parameter group).

Can pass through, but be not limited to, following manner is carried out and is signaled:

1) use and management frame or control frame or transmission make this APs propagate this information in wireless medium as the more high layer information of the pay(useful) load of Frame.

2) make MPs directly from requiring QoS information each other, but the more high layer information that this use and management frame or control frame or use transmits as the pay(useful) load of Frame reach.

3) make each MP store its QoS information in the central DB that is positioned at server and can be relevant to the information of any AP from the DB of these central authorities inquiry.

4) make this MPs report this information to central controller (CC) and make this CC relay this information to this MPs, this CC can transmit this information to the decision of which MPs and include, but not limited to this MPs and require this information to CC; This CC transmits this information to all MPs; And this CC transmits information about this MPs of known region only to the MPs that shares wireless medium in this zone, and this can listen to the CC of (be higher than it and postpone to pardon limit) and reach by making this MP report to MP.

Fig. 1 explanation is comprising a plurality of mesh point (MPs) according to the present invention, and 105,110,115, the difference that the mesh network 100 of center DB 120 and CC 125 signals is implemented.Fig. 1 illustrates how QoS information is shared and exchanged between MPs 105,110,115.This can package MPs 105,110,115 extremely each other finishes or it can be finished via center DB 120 or CC 125 by transmitting.

In first implements, one of them of MPs, MP 105, propagate its QoS information to other MPs 110,115 (step 130,135), its each must store this QoS information in the internal memory (not shown).

In second implements, one of them of MPs, MP 105, require QoS information (step 140,150) from other MPs 110,115, its each inevitable QoS information response (step 145,155) with them.

In the 3rd implemented, one of them of MPs was individual, and (as MP 105) reports that it stores this MP QoS information in the internal memory (not shown) to its QoS information to this center DB 120 (steps 160).As a MP, MP 110, require about another MP, and MP 105, QoS information, this center DB 120 transmits the QoS information of MP 105 to MP 110 (step 170).

In the 4th implements, one of them of MPs is individual, (as MP 105), the MP QoS information 175 that this MP is followed in report is to this CC 125 (step 175), its must report this MP QoS information to this MPs 105,110,115 all or subclass as propagate or response from one of them requirement (step 180,185) of this MPs 105,110,115.

At a specific embodiment, the QoS policy can and be upgraded with the common mesh network definition that exists of other MPs at a MP.A MP can be from receiving QoS information from identical mesh network or from the various MPs of different mesh networks.The present invention allows netted QoS policy and the QoS information of this MP based on the netted QoS information updating of receive its oneself.

A specific embodiment is comprising a plurality of MPs, MP 205, MP 210, MP 215, the specific embodiment of the mesh network 200 of center DB 220 and CC 225 according to the present invention in Fig. 2 explanation.

In first implements, one of them (that is enforcement 1 or 2 of Fig. 1) of using the illustrated signalling exchange of Fig. 1 is sent to this MP 215 with netted QoS information 230,235 from each of this MPs 205,210, and MP 215 is based on the netted QoS information updating of receive, (that is suitable property), its oneself netted QoS policy and QoS information (step 240).

In second implements, this QoS information 245,250,255 from this MP 205, this MP 210 and this DB 220 is known in the illustrated signalling (that is enforcement 1,2 or 3 of Fig. 1) of these MP 215 use Fig. 1, and based on the netted QoS information updating of receive, (that is suitable property), its oneself netted QoS policy and QoS information (step 260).This MP 215 reports that then this new QoS information is to this center DB 220 (steps 265).

In the 3rd implements, this QoS information 270,275,280 from this MP 205, this MP 210 and this CC 225 is known in the illustrated signalling (that is enforcement 1,2 or 4 of Fig. 1) of these MP 215 use Fig. 1, and transmits a netted QoS information updating requirement 285 to this CC 225.Should notice that this MP 215 can add this QoS information of being transmitted by this MP 210 and this MP 210 in more new demand 285 of this netted QoS.This CC 225 upgrades QoS policy and QoS information (step 290), and netted QoS updating record 295 responses that then are shown to this MP 215 with the QoS information that should use and QoS policy are to this MP 215.The operation of the netted QoS information that suitable property 240,260,290 design analysiss this various netted QoS information of this netted QoS and determining will be followed by this MP 215.

The suitable property of this netted QoS can distribution mode be carried out, (as in the enforcement 1 of Fig. 2 and implement shown in 2), it does not need extra signalling, the suitable property of this netted QoS can also be finished by centralized system, (implement via Fig. 23 this CC 225).

This netted QoS fits the property operation, as illustrated at Fig. 3, can carry out in many ways.For example, it can be considered from each AC special parameter of this mesh network 205,210 these netted QoS information of all that are received (that is parameter of definition EDCA operation, as minimum idle delay before competition (AIFSN)), minimum and maximum contention window (Cwmin and CWmax), and TXOP limiting parameter), estimate various AC priority and reach the parameter that then selection is suitable for deciding address demand MP QoS most.

Fig. 4 illustrate a kind of incident wherein according to the present invention another specific embodiment mesh network configurable in IEEE802.11e network 400 already present positions.This IEEE 802.11e network 400 comprises IEEE 802.11e AP 405, MP 410, central DB 415 and CC 420.MP 410 is network coexisted with the IEEE 802.11e that is this mesh network outside, and the QoS that this coexistence produces between two networks competes if coordinate.Suppose that the frequency selection algorithm can carry out earlier avoiding, (as far as possible), this mesh network and this IEEE 802.11e network 400 are operated at same channel.Yet when all-network must be shared same radio frequency and same channel channel, this situation took place.

At this IEEE 802.11e network 400, this MP 410 receives IEEE 802.11e beacon (step 425,435,450) from this AP 405.This MP can then take out the IEEE 802.11e QoS information that transmits at beacon and carry out the suitable property (step 430 and 440) of local netted QoS, QoS information use centralization DB exchange and the mesh network shared in, MP 410 can be with new QoS information updating this centralization DB (step 445).In the network that the suitable property of QoS is carried out in the centralization mode, the netted QoS of MP 410 transmission more new demand 455 also adds these 802.11eQoS information in this message 445 to this CC 420, and this CC 420 then carries out the suitable property (step 460) of this QoS and transmits netted QoS updating record 465 to this MP 410.The suitable property of this netted QoS for necessary so that exterior I EEE 802.11e QoS information is considered in this is netted, as shown in Figure 5.

A rule can be applicable to arrange this netted relevant QoS information to this IEEE 802.11e QoS policy, or minimizes possible QoS conflict at least.Oppositely, (that is arranging this IEEE 802.11e QoS to this netted QoS) can not monitor this MP channel for impossible because of this IEEE 802.11e AP.

The example that the QoS that MP can follow adjusts principle comprises, but be not limited to, use the QoS policy of difference maximum between this mesh network and this IEEE802.11e QoS information, (that is EDCA parameter group), (that is between QoS ACs in one of EDCA parameter group tool maximum difference), its with to the netted EDCA parameter of the preferable or relatively poor priority definition of identical AC with this netted or this IEEE 802.11e network of deflection, or it is similar.

No matter when this MP has made decision and has revised this netted EDCA parameter group, its must by allow as mentioned above QoS information the signalling of mesh network exchange will be transmitted to all the other grids.

At another specific embodiment, MP and IEEE 802.11e MAPs coexistence.As previous narration, MPs is connected to mesh backhaul and client's access interface, and MAPs can be had one or more physical radio.To multiple radio-frequency unit, the frequency separation of the two interface can be only by specifying different channels to carry out in them.Yet, to the situation of single radio frequency and even sometimes to multiple radio frequency, the two interface can use same radio channel.In this situation, the coordination of some QoS policies between the two interface for need to have coherent system in this same radio channel.

For tool supports the different QoS policy in the coherent system of back haul link and client's access interface, this mesh backhaul needs the setting of the two parameter group, it can be by carrying out the priority configuration, (as default configuration), or by when this system of setting or dynamically propagate these data via system operation between different nodes.About the mode of exchanges data and distribution, can use the signalling mechanism of QoS information that allows in the mesh network exchange.

The invention provides a kind of method with the back haul link that coherently defines and coordinate MAPs and the QoS policy between client's access interface.

With its plain mode, identical parameters can be used for both interfaces, makes that to similar package news affair access is suitable, and this incident also is described as follows:

ACs priority correspondence is shown in table 1:

Priority	Mesh backhaul ACs	Client's access ACs
Priority	Mesh backhaul ACs	Client's access ACs	1	Mesh_AC1	AC1
2	Mesh_AC2	AC2	1	Mesh_AC1	AC1
2	Mesh_AC2	AC2	3	Mesh_AC3	AC3
4	Mesh_AC4	AC4	3	Mesh_AC3	AC3

Table 1

So, when setting this system, or dynamically during system operation, this client's access interface must as by the announcement parameter in beacon and in its side identical parameters of turning back.

With complex form more, can carry out in some news affair differences of back haul link and access side.For example, when news are engaged in crossing this grid and when this client's access side of access only, ACs can be distinguished it.

For reaching this, can take many methods.Method is the different EDCA parameter group of tool, or the channel access parameter group, in back haul link and client's access make cross this mesh network package can with from identical AC only the package of this access channel of access distinguish.Reach possibility that these news be engaged in to distinguish for the some of them of four corresponding existing ACs to this back haul link, and some are engaged in to these client's access news.Similarly, because ACs originally was engaged in defining to client's access news by IEEE 802.11e, another possibility can be the more ACs of definition, and be engaged in specifically to handle this back haul link news at (that is in top of four existing IEEE-802.11e ACs).Another method is used in this grid and the affair of outer news for different TXOP parameters are provided.Another method is for providing different minimums and maximum contention window (CWmin and CWmax), and the news outside reaching in this grid are engaged in.Another method is for providing different frame interbody spacer (IFS) parameter in this grid and the affair of outer news.

For example, the different ACs of tool make us follow different news to be engaged in distinguishing strategy in back haul link and client's access, for example;

The plug in folder of ACs priority is shown in table 2:

Priority	Mesh backhaul ACs	Client's access ACs
Priority	Mesh backhaul ACs	Client's access ACs	1	Mesh_AC1
2		AC1	1	Mesh_AC1
2		AC1	3	Mesh_AC2
4		AC2	3	Mesh_AC2
4		AC2	5	Mesh_AC3

6	AC3
6	AC3	7	Mesh_AC4
8	AC4	7	Mesh_AC4

Table 2

It is as shown in table 3 to encase client's access ACs with site ACs:

Priority	Mesh backhaul ACs	Client's access ACs
Priority	Mesh backhaul ACs	Client's access ACs	1	Mesh_AC1
2	Mesh_AC2		1	Mesh_AC1
2	Mesh_AC2		3		AC1
4		AC2	3		AC1
4		AC2	5		AC3
6		AC4	5		AC3
6		AC4	7	Mesh_AC3
8	Mesh_AC4		7	Mesh_AC3

Table 3

It is as shown in table 4 to occupy client's access ACs in advance with site ACs:

Priority	Mesh backhaul ACs	Client's access ACs
Priority	Mesh backhaul ACs	Client's access ACs	1	Mesh_AC1
2	Mesh_AC2		1	Mesh_AC1
2	Mesh_AC2		3	Mesh_AC3
4	Mesh_AC4		3	Mesh_AC3
4	Mesh_AC4		5		AC1
6		AC2	5		AC1
6		AC2	7		AC3
8		AC4	7		AC3

Table 4

It is as shown in table 5 to occupy site ACs in advance with client's access ACs:

Priority

Mesh backhaul

Client's access

	ACs	ACs
	ACs	ACs		1		AC1
2		AC2		1		AC1
2		AC2	3		AC3
4		AC4	3		AC3
4		AC4	5	Mesh_AC1
6	Mesh_AC2		5	Mesh_AC1
6	Mesh_AC2		7	Mesh_AC3
8	Mesh_AC4		7	Mesh_AC3

Table 5

Other is combined as possible.

Merit attention the hypothesis that these example systems implement in the flyback line trackside based on four (4) ACs, the ACs that is chosen as an example and any other number of four (4) ACs is also for possible.For example, eight (8) ACs can implement in the grid side, and it can allow to distinguish news more and be engaged in, and are engaged in according to the same item news of distinguishing through the frequency hopping number of network, according to technical specification or its similar fashion as tool.Single AC also can be used for wrapping up all news affair forms of just crossing this back haul link.

Embodiment

1. one kind in a method that comprises the mesh network of plural mesh point (MPs), central database (DB) and central controller (CC), comprising:

(a) among the described MPs at least one propagate service quality (QoS) information on a wireless medium;

(b) among the described MPs at least one directly require QoS information from one of them of other this MPs;

(c) among the described MPs at least one store QoS information in the DB of these central authorities; And

(d) among the described MPs at least one inquire that the DB of these central authorities is about being associated with the QoS information of any this MPs.

2. according to the method for embodiment 1, wherein step (a) comprises that further the use and management frame propagates this QoS information.

3. according to the method for embodiment 1, wherein step (a) further comprises and uses control frame to propagate this QoS information.

4. according to the method for embodiment 1, wherein step (a) further comprises and uses the more high-rise message that transmits as the pay(useful) load of Frame to propagate this QoS information.

5. the method according to embodiment 1 further comprises:

(e) this MPs with the QoS report information to this CC; And

(f) this CC transmits this through reporting that QoS information is to all this MPs.

6. according to the method for embodiment 1, further comprise:

(e) this MPs with the QoS report information to this CC; And

(f) this CC transmission should be through report QoS information with respect to the some of the subclass of this MPs.

7. method in the mesh network that comprises a plurality of mesh point (MPs) comprises:

(a) one the one MP of described MPs receives service quality (QoS) information from least one other this MPs; And

(b) MP receives the QoS information of QoS information updating its oneself based on this institute.

8. according to the method for embodiment 7, wherein this QoS information comprises the employed configuration parameters by a MP.

9. according to the method for embodiment 7, wherein this QoS information comprises enhancing distributed channel access (EDCA) parameter group.

10. according to the method for embodiment 7, wherein this mesh network further comprises a plurality of mesh access points (MPs) that are connected to mesh backhaul and client's access interface, and this method further comprises:

(c) coherently coordinate QoS policy between this back haul link and the client's access interface; And

(d) access strategy (AC) of this mesh backhaul of priorization and client's access interface.

11. a mesh network comprises:

(a) a plurality of mesh point (MPs);

(b) central database (DB); And

(c) central controller (CC), among the wherein said MPs at least one on wireless medium, propagate service quality (QoS) information, among the described MPs at least one directly from other this MPs one of them requires QoS information at least, this MPs with the QoS information storage in the DB of these central authorities, and described MPs at least one inquire that the DB of these central authorities is about being associated with the QoS information of this any this MPs.

12., wherein be to use management frames to propagate this QoS information according to the mesh network of embodiment 11.

13., wherein be to use control frame to propagate this QoS information according to the mesh network of embodiment 11.

14., wherein be to use transmission to propagate this QoS information as the more high-rise message of the pay(useful) load of information frame according to the mesh network of embodiment 11.

15. according to the method for embodiment 11, wherein each MP comprises:

One conveyer is in order to report that QoS information is to this CC; And

One receiver receives the QoS information of being reported in order to this CC certainly.

16. according to the mesh network of embodiment 11, wherein this CC comprises a conveyer, receives the subclass of the part of QoS information to this MPs in order to propagate from one or more this MPs.

17. a mesh network comprises:

(a) a plurality of mesh point (MPs); And

(b) a plurality of mesh networks, wherein this MPs one of them is service quality (QoS) information of reception from these a plurality of mesh networks at least, and this at least one MP system receives itself QoS information of QoS information updating based on this institute.

18. according to the mesh network of embodiment 17, wherein this QoS information system comprises the employed configuration parameters by this at least one MP.

19. according to the mesh network of embodiment 17, wherein this QoS information comprises enhancing distributed channel access (EDCA) parameter group.

20. according to the mesh network of embodiment 17, wherein this mesh network further comprises a plurality of mesh access points (MAPs) that are connected to mesh backhaul and client's access interface, this MAPs comprises:

Be used for coherently coordinating the device of QoS policy between this mesh backhaul and the client's access interface; And

The device that is used for the access strategy (AC) of this mesh backhaul of priorization and client's access interface.

21. a method of distinguishing package in a mesh network, this method comprises:

(a) receive a package;

(b) decision package form;

(c) based on this package form with the selected parameter group of this package reflection to a plurality of channel access parameter groups; And

(d) according to the parameter related with this selective channel access parameter group to transmit this package.

22. according to the method for embodiment 21, wherein this channel access parameter is access strategy (ACs).

23. according to the method for embodiment 21, wherein this parameter group be the network backhaul circuit specific and be stored in a mesh point one the table in.

24. according to the method for embodiment 21, wherein this parameter is to stipulate a frame period (IFS) time to be used for access one medium.

25. according to the method for embodiment 21, wherein this parameter is to stipulate minimum and maximum contention window.

26. according to the method for embodiment 21, wherein this parameter is specify transmission opportunity (TXOP) restriction.

27. according to the method for embodiment 21, wherein this parameter is service quality (QoS) information.

28. according to the method for embodiment 27, wherein each qos parameter definition one strengthens distributed channel access (EDCA) QoS policy.

29. according to the method for embodiment 27, wherein each channel access parameter is associated with a special priority level.

30. a wireless communication system that is used to transmit package, this system comprises;

The mesh network that comprises at least one mesh point (MP); And

One mesh access points (MAP), in order to control in this mesh network and the transmission of outer package, wherein each package system videos based on this package form to a parameter group of selecting of a plurality of channel access parameter groups, and this package system is transmitted according to the parameter related with the channel access parameter group of this selection.

31. according to the system of embodiment 30, wherein this channel access parameter is access strategy (ACs).

32. according to the system of embodiment 30, wherein this parameter group be the network backhaul circuit specific and be stored in a mesh point one the table in.

33. according to the system of embodiment 30 wherein this parameter be to stipulate minimum and maximum contention window.

34. according to the system of embodiment 30, wherein this parameter is to stipulate a frame period (IFS) time in order to access one medium.

35. according to the system of embodiment 30, wherein this parameter is specify transmission opportunity (TXOP) restriction.

36. according to the system of embodiment 30, wherein this parameter is to be service quality (QoS) parameter.

37. according to the system of embodiment 36, wherein each qos parameter system definition one strengthens distributed channel access (EDCA) QoS policy.

38. according to the system of embodiment 36, wherein each channel access parameter is related with a special priority level.

39. one kind in a method that comprises the mesh network of a plurality of mesh point (MPs) and central database (DB), comprising:

(a) one the one MP among this MPs receives service quality (QoS) information from one at least and the DB of these central authorities of other MP among this MPs; And

(b) MP based on this reception QoS information to upgrade the QoS information of itself.

40. according to the method for embodiment 39, wherein this QoS information comprises the employed configuration parameters by a MP.

41. according to the method for embodiment 39, wherein this QoS information comprises enhancing distributed channel access (EDCA) parameter group.

42. one kind in a method that comprises in the mesh network of a plurality of mesh point (MPs) and master controller (CC), comprising:

(a) one the one MP among this MPs receives service quality (QoS) information from one at least and this CC of other MP among this MPs; And

43. according to the method for embodiment 42, wherein this QoS information comprises the employed configuration parameters by a MP.

44. according to the method for embodiment 42, wherein this QoS information comprises enhancing distributed channel access (EDCA) parameter group.

Though feature of the present invention and assembly are described in this preferred embodiment with particular combinations, each feature or assembly can not had the further feature of preferred embodiment and assembly and be used separately or with tool or do not have various combinations of further feature of the present invention and assembly.

Though the present invention is with the narration of the form of preferred embodiment, other in the scope of the invention that claim is hereinafter narrated is changed to be known this skill person and obviously finds out.

Claims

2. method according to claim 1 is characterized in that, step (a) comprises that further the use and management frame propagates this QoS information.

3. method according to claim 1 is characterized in that, step (a) further comprises uses control frame to propagate this QoS information.

4. method according to claim 1 is characterized in that, step (a) further comprises uses transmission to propagate this QoS information as the more high-rise message of the pay(useful) load of Frame.

5. method according to claim 1 is characterized in that, further comprises:

(e) this MPs with the QoS report information to this CC; And

6. method according to claim 1 is characterized in that, further comprises:

(e) this MPs with the QoS report information to this CC; And

8. method according to claim 7 is characterized in that, this QoS information comprises the employed configuration parameters by a MP.

9. method according to claim 7 is characterized in that, this QoS information comprises enhancing distributed channel access (EDCA) parameter group.

10. method according to claim 7 is characterized in that, this mesh network further comprises a plurality of mesh access points (MPs) that are connected to mesh backhaul and client's access interface, and this method further comprises:

11. a mesh network comprises:

(a) a plurality of mesh point (MPs);

(b) central database (DB); And

12. mesh network according to claim 11 is characterized in that, is to use management frames to propagate this QoS information.

13. mesh network according to claim 11 is characterized in that, is to use control frame to propagate this QoS information.

14. mesh network according to claim 11 is characterized in that, is to use transmission to propagate this QoS information as the more high-rise message of the pay(useful) load of information frame.

15. method according to claim 11 is characterized in that, each MP comprises:

One conveyer is in order to report that QoS information is to this CC; And

16. mesh network according to claim 11 is characterized in that, this CC comprises a conveyer, receives the subclass of the part of QoS information to this MPs in order to propagate from one or more this MPs.

17. a mesh network comprises:

(a) a plurality of mesh point (MPs); And

18. mesh network according to claim 17 is characterized in that, this QoS information system comprises the employed configuration parameters by this at least one MP.

19. mesh network according to claim 17 is characterized in that, this QoS information comprises enhancing distributed channel access (EDCA) parameter group.

20. mesh network according to claim 17 is characterized in that, this mesh network further comprises a plurality of mesh access points (MAPs) that are connected to mesh backhaul and client's access interface, and this MAPs comprises:

(a) receive a package;

(b) decision package form;

22. method according to claim 21 is characterized in that, this channel access parameter is access strategy (ACs).

23. method according to claim 21 is characterized in that, this parameter group be the network backhaul circuit specific and be stored in a mesh point one the table in.

24. method according to claim 21 is characterized in that, this parameter is to stipulate a frame period (IFS) time to be used for access one medium.

25. method according to claim 21 is characterized in that, this parameter is to stipulate minimum and maximum contention window.

26. method according to claim 21 is characterized in that, this parameter is specify transmission opportunity (TXOP) restriction.

27. method according to claim 21 is characterized in that, this parameter is service quality (QoS) information.

28. method according to claim 27 is characterized in that, each qos parameter definition one strengthens distributed channel access (EDCA) QoS policy.

29. method according to claim 27 is characterized in that, each channel access parameter is associated with a special priority level.

The mesh network that comprises at least one mesh point (MP); And

31. system according to claim 30 is characterized in that, this channel access parameter is access strategy (ACs).

32. system according to claim 30 is characterized in that, this parameter group be the network backhaul circuit specific and be stored in a mesh point one the table in.

33. system according to claim 30 is characterized in that, this parameter is to stipulate minimum and maximum contention window.

34. system according to claim 30 is characterized in that, this parameter is to stipulate a frame period (IFS) time in order to access one medium.

35. system according to claim 30 is characterized in that, this parameter is specify transmission opportunity (TXOP) restriction.

36. system according to claim 30 is characterized in that, this parameter is to be service quality (QoS) parameter.

37. system according to claim 36 is characterized in that, each qos parameter system definition one strengthens distributed channel access (EDCA) QoS policy.

38. system according to claim 36 is characterized in that, each channel access parameter is related with a special priority level.

40., it is characterized in that this QoS information comprises the employed configuration parameters by a MP according to the described method of claim 39.

41., it is characterized in that this QoS information comprises enhancing distributed channel access (EDCA) parameter group according to the described method of claim 39.

43., it is characterized in that this QoS information comprises the employed configuration parameters by a MP according to the described method of claim 42.

44., it is characterized in that this QoS information comprises enhancing distributed channel access (EDCA) parameter group according to the described method of claim 42.