CN105557009A

CN105557009A - A method of performing an operation of a communication network and a network component

Info

Publication number: CN105557009A
Application number: CN201480034650.6A
Authority: CN
Inventors: 陈骞; 彭晓明; 方剑文; 陈保善
Original assignee: Agency for Science Technology and Research Singapore
Current assignee: Agency for Science Technology and Research Singapore
Priority date: 2013-04-19
Filing date: 2014-04-17
Publication date: 2016-05-04
Also published as: WO2014171895A1

Abstract

A method of performing an operation of a communication network and a network component. One method of performing an operation of a communication network operating in a channel which overlaps, or resides in, a common channel spectrum band comprises the operating network periodically allocating notification periods (NPs) on the common channel spectrum band in a state in which no other network is operating in another channel which overlaps, or resides in, the common channel spectrum band; and the operating network at least transmitting a notification signal in each periodically allocated NP in the common channel spectrum band.

Description

A kind of method of operation of executive communication network and networking component

The cross reference of related application

The application quotes and requires " AnEnhancedDynamicBandwidthControlMACProtocol " that propose on April 19th, 2013 to Department of Intellectual Property of Singapore and the application number on time distributed is the priority of the application of 201303001-0.According to the detailed rules and regulations 4.18 of PCT, be that any object is all incorporated to herein by reference in the content of described application proposed on April 19th, 2013, comprise and being incorporated to, do not comprise in the text and any element of the specification, claims or the accompanying drawing that relate in the detailed rules and regulations 20.5 (a) of PCT or part.

Technical field

Various embodiment relates generally to the field of the operation of executive communication network, especially to the media access control protocol that the dynamic bandwidth of network operation controls.

Background technology

Recently, there is the different wireless technologys that all (such as, in 60GHz frequency band, 45GHz frequency band or other frequency bands) operates in identical unauthorized spectral hand.Owing to deploying different technology in identical spectral hand, so coexisting of different technologies becomes a major issue, to avoid the interference between the network that operates under different radio technical standard.Along with the change of centre frequency and channel width, various criterion adopts different spectral hand channelizing process usually.

Such as, by many technology standardizations to work in 60GHz frequency band, comprise IEEE802.11ad, IEEE802.15.3c and ECMA-387.Recently, Chinese Wireless Personal Network (ChinaWirelessPersonalAreaNetwork, CWPAN) is setting about the technical specification being defined in the 60GHz frequency band operation that China issues.IEEE802.11 working group also have approved new task groups IEEE802.11aj to limit the specification revised Chinese millimeter wave frequency band.But the 60GHz frequency band that China issues is less than the frequency band that other countries issue, and only can cover 2 channels corresponding with the channel 2 used in IEEE802.11ad and channel 3.In order to support efficient networking, need to support more logic channels.According to maintenance IEEE802.11ad channel to realize the regulation of interoperability, consider to utilize less channel width to carry out channelizing.And the interoperability of IEEE802.11ad device provides attractive excitation: share rare spectrum resource between the device of two kinds of different technologies standards, this facilitate the universal of the device of these two kinds of standards.

Embodiments of the invention attempt the operation providing executive communication network, solve at least one problem above-mentioned and/or demand.

Summary of the invention

According to first aspect, provide a kind of method of operation of executive communication network, this communication network operates in channel that is overlapping with common signal channel spectral hand or that reside in common signal channel spectral hand, the method comprises: do not having other networks under state that is overlapping with common signal channel spectral hand or that operate in residing in common signal channel spectral hand one other channel, the announcement period of operational network periodic allocation on common signal channel spectral hand (NP); And send notification signal in the NP of each periodic allocation of operational network at least in common signal channel spectral hand.

According to second aspect, provide a kind of method performing the operation of object communication network, the method comprises the following steps: object network of network component scans common signal channel spectral hand seeks the notification signal of operational network; Networking component is just operated by notification signal determination operation network in the first channel, and this first channel overlaps with common signal channel spectral hand or resides in common signal channel spectral hand; And networking component adds existing network as non-PCP/ non-ap stations (STA).

According to the third aspect, provide a kind of networking component of communication network, this communication network operates in the first channel that is overlapping with common signal channel spectral hand or that reside in common signal channel spectral hand, this networking component comprises: distributor, this distributor is used for not having other networks under state that is overlapping with common signal channel spectral hand or that operate in residing in common signal channel spectral hand one other channel, the announcement period of periodic allocation on common signal channel spectral hand (NP); And transmitter, this transmitter is used for sending notification signal in the NP of each periodic allocation in common signal channel spectral hand.

According to fourth aspect, provide a kind of networking component of object communication network, this networking component comprises: receiver, and the notification signal of operational network sought by this receiver for scanning common signal channel spectral hand; Determiner, this determiner is used for just being operated in first passage by notification signal determination operation network, and this first passage overlaps with common signal channel spectral hand or resides in common signal channel spectral hand; And wherein, networking component is configured to add existing network as non-PCP/ non-ap stations (STA).

Accompanying drawing explanation

When reading by reference to the accompanying drawings, the present invention is able to better understanding by following detailed description.It is emphasised that traditionally, the various feature/key elements of accompanying drawing can not to scale (NTS) be drawn.On the contrary, for the sake of clarity, can arbitrarily expand or reduce the size of various feature/key element.And in the accompanying drawings, common numeral number is used for feature/key element like representation class.Accompanying drawing comprises as figure below:

Fig. 1 (prior art) shows the example of beacon interval (BI) structure, this beacon interval (BI) structure sends interval (ATI) and two cycle (contention-basedperiod based on competition in data transfer interval (DTI) by Beacon Periods (BTI), association beamforming training time (A-BFT), notice, CBAP) and two seeervice cycle (Serviceperiod, SP) compositions.

Fig. 2 (prior art) shows conventional dynamic bandwidth control MAC technology.

Fig. 3 a shows the following example according to example embodiment: PCP/AP1 operates in little frequency band, and stand (station, STA) or device (if successfully start new network, so subsequently this station or device are called PCP/AP2) be added in the network of the PCP/AP1 in current little frequency band, and request starts it adjacent without the network in the little frequency band taken.

Fig. 3 b shows the following example of the MAC structure according to example embodiment: PCP/AP2 PCP/AP1 accept its request and in large frequency band for its distribution NP after, be enabled in adjacent without the new network in the little frequency band taken.

Fig. 3 c shows the following example according to example embodiment: when only having PCP/AP2 to operate in adjacent little frequency band, and PCP/AP1 stops its service in little frequency band.

Fig. 3 d show the service stopping it in adjacent little frequency band at PCP/AP1 according to example embodiment after PCP/AP2 how to make the example of its TBTT movement in large frequency band.

Fig. 4 shows the AllocationType field value according to example embodiment.

Fig. 5 a and Fig. 5 b shows the respective examples of the mixed mode of the service compatibility supported by CWPAN or IEEE802.11aj to IEEE802.11ad according to example embodiment.

Fig. 6 a to Fig. 6 y shows the possible situation of the channel seizure ratio of CWPAN or the IEEE802.11aj network according to example embodiment.

Figure 10 shows the schematic diagram of the networking component of the object communication network illustrated according to an embodiment.

Embodiment

Below describe in detail and have references to accompanying drawing, accompanying drawing is shown by illustrated mode can put into practice detail of the present invention and embodiment.Carry out enough describing in detail to these embodiments, to enable those skilled in the art to put into practice the present invention.Without departing from the scope of the invention, other embodiments can be utilized, and structural change above and in logic can be carried out.Various embodiment might not be mutually exclusive, and this is because some embodiments can be combined to form new embodiment with one or more other embodiments.

In order to easily the present invention can be understood and can be tried out, with reference to accompanying drawing, specific embodiment will be described with nonrestrictive mode by way of example now.

Described embodiment relates to dynamic bandwidth and controls media interviews and control (MAC) agreement to solve coexisting of the Multi net voting that operates in overlapping frequency spectrum frequency band, and provides compatible solution for the different device in public visit spectrum bands.Utilize understanding to operating existing network, device preferably can alleviate interference between network according to its compatible number of mechanisms that adopts, and such as, operation is switched to other frequency bands, adds existing network, usage space Wave beam forming or postpone sends.

For the device adding existing network, this device not only can be added in the existing network in common band, can also be added in a network in the existing network residing at and operate in channel band in common band or overlapping with common band.This new equipment can have the network type identical with the network type of existing network, or can have the network type different from the network type of the existing network in frequency band.In addition, the interference avoided from other potential networks started in the new channel band wanted in common band can be preferably provided in the embodiments described, in this common band, there is the multiple existing network operated in channel band that is overlapping with common band or that reside in common band.

Run through the present invention, describe embodiment by unauthorized 60GHz frequency band is used as example.But, should be appreciated that the present invention can easily extend to other and use a model, comprise extend to have similar network operation model or extend to any frequency band.

In order to promote the explanation to example embodiment, IEEE802.1.1adMAC beacon interval (beaconinterval, BI) that example uses a model first is described and dynamic bandwidth controls MAC protocol, if in December, 2012 is at IEEEP802.11ad below ^tMdescribed in-2012 standards " Part11:WirelessLANMediumAccessControl (MAC) andPhysicalLayer (PHY) Specifications-Amendment3:EnhancementsforVeryHighThrough putinthe60GHzband, " (" part 11: Wireless LAN Medium access control (MAC) and physical layer (PHY) specification--amendment 3: the enhancing to the high throughput in 60GHz frequency band ").

iEEE802.11adMAC beacon interval

Fig. 1 shows the example of beacon interval (BI) structure 100, beacon interval structure 100 is by BTI102, A-BFT104, ATI106, and two CBAP108 in data transfer interval (DTI) 116, 110 and two SP112, 114 compositions, if in December, 2012 is at IEEEP802.11ad/D9.0 standard " Part11:WirelessLANMediumAccessControl (MAC) andPhysicalLayer (PHY) Specifications-Amendment3:EnhancementsforVeryHighThrough putinthe60GHzband, " in (" part 11: Wireless LAN Medium access control (MAC) and physical layer (PHY) specification--amendment 5: the enhancing to the high throughput in 60GHz frequency band ") for the thousands of million (directionalmulti-gigabit of orientation, DMG) system defined.

-beacon interval in IEEE802.11adMAC is mainly divided into 4 parts:

■ beacon sends interval (Beacontransmissioninterval, BTI) 102

■ association beamforming training (Associationbeamformingtraining, A-BFT) 104

■ notices and sends interval (Announcementtransmissioninterval, ATI) 106

■ data transfer interval (Datatransferinterval, DTI) 116.

-following is a list some uses of various piece:

-beacon sends interval (BTI) 102

Individual's set of basic central point (PCP)/access point (AP) standard omni-directionally sends one or more DMG beacon frame via different sector.

DMG beacon frame carries network management information.

DMG beacon frame network enabled synchronizing function.

DMG beacon frame is used as the training frames carrying out Wave beam forming between PCP/AP station and non-PCP/ non-ap stations (STA).

In order to add network, STA scanning for beacon, continues in A-BFT and PCP/AP carries out beam forming process, then associates with PCP/AP during AT or CBAP.

-association beamforming training (A-BFT) (104)

Between PCP/AP and the non-APSTA of non-PCP/, perform initial beam formed and train.

Enter and allow the non-APSTA of multiple non-PCP/ to perform Wave beam forming with PCP/AP concurrently in same A-BFT.

-notice transmission interval (BTI) (106)

Between PCP/AP and the non-APSTA of non-PCP/, the management performed based on asking to respond is accessed.PCP/AP scheduling in data transfer interval (DTI) distributed and seeervice cycle (SP) distribution based on the access cycle (contention-basedaccessperiod, CBAP) of competition.

-data transfer interval (DTI) (116)

Any frame of ■ can occur during CBP and SP, comprises application data frame transmission.

The access of ■ during CBP is the IEEE802.11EDCA operation based on amendment, and this operation is through finely tuning for beam communication.

The access of ■ during SP is scheduled and is assigned to specific station.

dynamic bandwidth controls MAC protocol

Suppose the principle taken based on First come first served to channel.If network operates just in the channel, the device so from the network of another type can not start its operation in the channel.Suppose a kind of mechanism realizing this function.Also suppose that network equipment can not only detect the beacon of the existing network belonging to its oneself type, can also detect the beacon of the existing network of another kind of type.In addition, suppose that the network equipment of at least one type can residing in operation in the large frequency band in common signal channel spectral hand (common signal channel spectral hand) and less frequency band, and the network equipment of at least one other types only can operate in large frequency band, as specified in disclosed international patent application WO2012121676Al and disclosed international patent application WO2012121672Al.In addition, the network equipment of the first kind not only can operate in the network of its oneself type, can also operate in the network of a rear type.

When to want existing network be less channel from large channel distribution to new network equipment, first it will add existing network.Then this device sends command frame to the individual set of basic central point/access point (PCP/AP) of existing network and divides with request channels.Request data frame is used for carrying out channel distribution.If existing network determines to be less channel by its large channel distribution, by its beacon times, it notifies that its all device (comprising request unit) is in a network to change to less channel of operation by its channel of operation.Channel switches advertised information element (IE) and may be used in beacon, to notice the switching to new less channel.Responsive data frame can also be sent to wanting the request unit starting new network.Then, its operation in larger channel is suspended after the existing network at one end time.Then, existing network continues to perform its operation as new network, and, when reaching the fixed time, in new less channel, carry out necessary program.Such as, carry out Wave beam forming in the seeervice cycle (SP) with the cycle (CBAP) based on competition, associate and new scheduling etc.Want before the request unit starting another new network starts its network operation in its little frequency band, according to the MAC protocol proposed in disclosed international patent application WO2012121676Al, to wait for the fixed time.Request unit needs the channel listened in the beacon of existing network to switch notice IE.New PCP/AP as new network is started its operation by request unit in less frequency band.In addition, in announcement period (NP) period, in existing large frequency band, existing PCP/AP and new PCP/AP regularly must send notification signal, and such as, DMG beacon frame, as described in disclosed international patent application WO2012121676Al.Want other devices of this new network be added in other less channels can realize this point by standard Wave beam forming and associated program.

If its network shut-down operation in adjacent less frequency band, the PCP/AP of the network operated in less channel is regularly to performing Channel Detection, to improve performance for the formation of its adjacent less channel of larger channel potentially.If the adjacent less channel vacated detected, so PCP/AP can determine whether it wants its less channel expansion to larger channel.If existing network determines by its less channel expansion to larger channel, by its beacon times, it notifies that its all device is in a network to change to larger channel of operation by its channel of operation.Channel switches advertised information element (IE) and may be used in beacon, to notice the switching to new larger channel.Then, existing network suspends its operation over time.Then, existing network continues to perform its operation as new network, and in new larger channel, carry out necessary program, such as, carry out Wave beam forming with the cycle (CBAP) etc. based on competition in the seeervice cycle (SP), associate and new scheduling etc.

Coexist

Under the above-mentioned background used a model, example embodiment of the present invention can advantageously guarantee coexisting of heterogeneous networks, is limited in the potential interference between dissimilar network by instruction simultaneously:

1) between the specified device of CWPAN or IEEE802.11aj network, consult the announcement period of the DMG beacon frame transmissions of dispatching in common signal channel frequency band, this CWPAN or IEEE802.11aj network is operating with common signal channel band overlapping or in residing in common signal channel frequency band channel band.

2) be used in DMG beacon frame transmissions in common signal channel frequency band to notify new CWPAN or IEEE802.11aj device, this new CWPAN or IEEE802.11aj device want with the common signal channel band overlapping that there is network or other channel bands residing in this common signal channel frequency band in start new network.

3) be used in DMG beacon frame transmissions in common signal channel frequency band to notify that potential new IEEE802.11ad device existing network takies situation to common signal channel frequency band, this potential new IEEE802.11ad device is wanted to start IEEE802.11ad network in common signal channel frequency band.

The details of the solution that coexists in example embodiment is described below.

By the example of frequency band plans 200 using shown in figure 2, describe in disclosed international patent application WO2012121672Al, CWPAN or IEEE802.11aj device (being called the device being about to occur) can operate in large frequency band L1 or L2, and can operate in little frequency band S3, S4, S5 or S6.IEEE802.11ad device (being called conventional apparatus) only can operate in large frequency band L1 or L2.In this case, large frequency band L1 or L2 will be the big bus channel spectral hand sending notification signal, and in this case, this notification signal is DMG beacon frame.

In disclosed international patent application WO2012121676Al, the solution that coexists is realized by following agreement:

When CWPAN or IEEE802.11aj network operates in large frequency band together with specified device PCP/AP1, the specified device PCP/AP2 of any other network easily can detect the existence of existing CWPAN or IEEE802.11aj network by listening to the DMG beacon frame sent in large frequency band by PCP/AP1.

If another CWPAN or IEEE802.11aj network with specified device PCP/AP2 is wanted by being that two less frequency bands start another network by large frequency band division, so PCP/AP2 will add the network of existing PCP/AP1 in large frequency band, and then request channels divides.After carrying out successful channel distribution program, PCP/AP1 and PCP/AP2 will operate respectively in little frequency band S5 and S6, and during NP1 and NP2, sends its notification signal respectively, such as, and DMG beacon frame.

When one of them network in two CWPAN or IEEE802.11aj networks stops its service in little frequency band S5 or little channel S6, another network after successful combining channel program, by its bandwidth from its little band spreading to large frequency band.

Therefore, in disclosed international patent application WO2012121676Al, only there are two kinds of modes of operation.Large frequency band is taken by single network, or two networks will take two little frequency bands of the large frequency band of composition.

In the exemplary embodiment, MAC protocol expands to other foreseeable operation scenarios, wherein, deploys CWPAN device, IEEE802.11aj device and IEEE802.11ad device to support interoperability.

In the first scene, together with specified device PCP/AP1, a CWPAN or IEEE802.11aj device is only had to start its network, and operation in little frequency band S5 (or S6), vacate other frequency bands S6 (or S5).

In the second scene, suppose after channel distribution, two CWPAN or IEEE802.11aj networks with specified device PCP/AP1 and 2 operate in little frequency band S5 and S6.Subsequently, PCP/AP2 (or PCP/AP1) stops its service in little frequency band S6 (or S5).But PCP/AP1 (or PCP/AP2) continues operation in the little channel S5 (or S6) not having combining channel, is formed contrast with the scene in disclosed international patent application WO2012121676Al.

Mode of operation by possible for consideration three kinds:

I) large frequency band L1 is taken by single network.

Ii) two little frequency band S5 and S6 are taken by two different networks.

Iii) one in S5 and S6 is taken by a network, and another is vacant.

For iii), PCP/AP1 can use the MAC protocol as described in disclosed international patent application WO2012121676Al to carry out operation in the little channel S5 (or S6), and another little frequency band S6 (or S5) can be used for another new network of setting up as shown in Figure 3 a now.In addition, disturb in order to other networks alleviated with comprise legacy network produce, the NP of PCP/AP1 in the exemplary embodiment in large frequency band L1 (NP1 see in fig. 3 a) period sends notification signal (such as, DMG beacon frame), to allow the device identification notification signal of two types.In Fig. 3 a-d and in Figure 5, the NP distributed in large frequency band is illustrated as the slit extending past little frequency band, such as, NP1 extends past S5 and S6 in Fig. 3 a, that is, in large frequency band L1, distribute NP1 (compared with Fig. 2).

The notification signal as described in disclosed international patent application WO2012121676Al can be sent in NP in large frequency band, this NP is only made up of the BTI300 shown in Fig. 3 a substantially, or the NP in large frequency band can comprise beacon header interval (BHI), this beacon header interval (BHI) can comprise BTI300, A-BFT302 or ATI304, if in December, 2012 is at IEEEP802.11ad ^tM-2012 standards " Part11:WirelessLANMediumAccessControl (MAC) andPhysicalLayer (PHY) Specifications-Amendment3:EnhancementsforVeryHighThrough putinthe60GHzband, " (" part 11: Wireless LAN Medium access control (MAC) and physical layer (PHY) specification--amendment 3: the enhancing to the high throughput in 60GHz frequency band ") limit.In the exemplary embodiment, hereinafter, the NP of the first kind is expressed as type ANP, and the NP of Second Type is expressed as type B NP.In the exemplary embodiment, be each continuous number N that the NP of type A distributes _{max_A}distribute at least one type B NP, wherein, N _{max_A}decided by the maximum number of Bi, after this, expect A-BFT or ATI, if in December, 2012 is at IEEEP802.11ad ^tMthe middle defined of-2012 standards " Part11:WirelessLANMediumAccessControl (MAC) andPhysicalLayer (PHY) Specifications-Amendment3:EnhancementsforVeryHighThrough putinthe60GHzband, " (" part 11: Wireless LAN Medium access control (MAC) and physical layer (PHY) specification--amendment 3: the enhancing to the high throughput in 60GHz frequency band ").Note, in the exemplary embodiment, the minimum duration of BHI is indicated by the dot11MinBHIDuration parameter being defined as microsecond.

The first agreement (agreement 1) according to example embodiment can be described as:

Agreement 1: with common signal channel band overlapping or the network periodic allocation announcement period (NP) that operates in residing in common signal channel frequency band channel band, this announcement period (NP) comprises the notification signal at least transmitted in common spectrum frequency band.

The foundation of new network

State i for above-described operation), in disclosed international patent application WO2012121676Al, describe the MAC protocol setting up new network.State ii for aforesaid operations), unless a network in existing network stops at the operation in any one little frequency band, otherwise do not have new network to set up.State iii for aforesaid operations), if another new network with specified device PCP/AP2 intends to start its network in the adjacent little frequency band S6 vacated as shown in Figure 3 a, so device will follow the detailed procedure being appointed as agreement 2 in following example embodiment.

Agreement 2:

First, PCP/AP2 will scan before netinit in large frequency band L1.Therefore, PCP/AP2 can hear notification signal in large frequency band L1, such as, and the DMG beacon frame sent in the BTI of PCP/AP1, and correspondingly can obtain the current information just operated in little frequency band S5 of PCP/AP1.And PCP/AP2 can obtain information: another little channel S6 may be used for taking now, this can be indicated by the channel occupancy element transmitted in above-mentioned DMG beacon frame.Note, if do not send this information element (IE), PCP/AP2 so in the exemplary embodiment scans to understand little frequency band seizure condition further in little frequency band S5 and S6.Preferably, PCP/AP2 only needs the duration interscan between two NP each little frequency band S5, S6 to understand seizure condition.Can advantageously simultaneously or carry out the scanning of two frequency bands S5, S6 continuously according to the performance of PCP/AP2.

Secondly, if little frequency band S6 is available, PCP/AP2 will be added in the network of the existing PCP/AP1 in large frequency band L1 or in little frequency band S5 as station (or being called the non-AP of non-PCP/, (STA)) by bootstrap.

Again, in the frequency band that PCP/AP2 adds, PCP/AP2 sends request frame by during ATI or during SP or CBAP of the scheduling of DTI to PCP/AP1.Claim frame comprises the request that PCP/AP2 intends to start its network in adjacent little frequency band S6, and other information, such as, and the time duration etc. that NP needs.If consider as the hidden terminal problem described in disclosed international patent application WO2012121676Al, so when another new network of successfully foundation or approval starts in little frequency band S6, PCP/AP1 can refuse the request of PCP/AP2.If PCP/AP1 ratifies a motion, so it will notify PCP/AP2 by approval frame, DMG beacon frame or announcement frame.

Consider hidden terminal problem and interference mitigation, the PCP/AP1 in example embodiment regularly sends notification signal during also having PCP/AP2 its NP in large frequency band L1.Therefore, as shown in Figure 3 b, the NP (NP2) that PCP/AP1 is PCP/AP2 by expansion schedule element in large frequency band L1 distributes SP, expansion schedule element is included in DMG beacon frame or announcement frame, sends this DMG beacon frame or announcement frame before PCP/AP2 in frequency band L1 or S5 added.Note, in the exemplary embodiment, unless the network of PCP/AP1 and PCP/AP2 stops service subsequently, otherwise the distribution of NP (being herein NP1 and NP2) in large frequency band L1 is retained by PCP/AP1 and PCP/AP2 always.

One circulation in for PCP/AP1 and PCP/AP2 distribute NP preferably continuously arrange and very close to each other; In this case, NP will have identical circulation timei.In addition, when not moving target beacon transmitting time (TBTT) of the PCP/AP1 in little channel S5, the NP of PCP/AP2, such as NP2, before being preferably arranged on the NP of PCP/AP1, such as, illustrated NP1 in Fig. 3 (b).This set is conducive to allowing PCP/AP1 and PCP/AP2 to be minimized in little frequency band and the bandwidth switching surfaces greatly between frequency band.In the exemplary embodiment, each PCP/AP preferably needs only to be switched to large frequency band (namely from its oneself little frequency band, common spectrum frequency band) once, to send its DMG beacon frame, and NP1 and NP2 (the being illustrated as 306/308 respectively) period subsequently in large frequency band receives DMG beacon frame from other PCP/AP, is then back to its little frequency band at each cyclic switching.Note, the concrete enforcement depending on RF circuit switching time (vice versa) between large frequency band and little frequency band, about hundreds of microsecond of usual duration.The NP duration preferably includes switching time.

And, disturb to be conducive to minimizing between frequency band interference or even eliminate between frequency band, maintain the synchronous of NP in the exemplary embodiment.In order to the clock skew between calculating because of two PCP/AP and the time drift produced, preferably regularly make PCP/AP synchronous in each cycle.This situation such as can be realized by the time synchronized function (TSF) that limits in IEEE 802.11, wherein, PCP/AP2 in NP (that is, the NP1308 in large frequency band) as shown in Figure 3 b period of PCP/AP1 from PCP/AP1 received frame.

The smallest synchronization cycle that the periodicity of NP is in the exemplary embodiment needed by the PCP/AP operated in little frequency band and the maximum channel that the PCP/AP operated in large frequency band needs determine sweep time.Such as, in IEEE802.11ad, minimum channel is set to equal the maximum BI duration sweep time, that is, aMinChannelScan=aMaxBIDuration=1000 time quantum (TU).Therefore, the circulation timei of NP is not set to be greater than 1000TU in the exemplary embodiment.Before the NP by above-mentioned constraint, the actual cycle time of NP is preferably determined by PCP/AP1.

The stopping of existing network

State i for aforesaid operations) and iii), the stopping of existing network does not need MAC protocol.State ii for aforesaid operations), when the network of in network stops its network operation finally, owing to failing any notification signal to be detected from other PCP/AP during the NP in large frequency band, in little frequency band, the disappearance of PCP/AP operation can be noticed by other PCP/AP operated in the little frequency band that it is adjacent.In order to the possibility of the frame that prevents loss, before the network making other adjacent PCP/AP has stopped the decision of its network work, PCP/AP in the exemplary embodiment preferably waits for the MaxExpireDuration duration, and this MaxExpireDuration duration is the integer multiple of Bi and counts from when the last frame received from other PCP/AP.

After the network making other adjacent PCP/AP has stopped the decision of its network work, remaining PCP/AP can have two kinds of selections: 1) by its bandwidth from little band spreading to large frequency band, this describes in disclosed international patent application WO2012121676Al.2) in the exemplary embodiment, continue operation in little frequency band S5 and do not carry out combining channel, the agreement 3 pointed out below being designated as after MAC protocol:

Agreement 3: if PCP/AP2 is not in little frequency band S6, so PCP/AP1 continues its service in little frequency band S5, but by the NP no longer for PCP/AP2, the SP be retained in large frequency band L1 distributes in medium time afterwards, namely, NP2, can return the operation illustrated in fig. 3 a like this.

In another aspect, as shown in Figure 3 c, if PCP/AP1 is not in little frequency band S5, previous NP1 will vacate now.In this case, PCP/AP2 can expand its NP to cover the whole duration of previous NP1 and NP2, or dispatches the distribution in little frequency band S6 within the cycle that this is vacated now (being indicated by the numeral 310 in Fig. 3 c).Alternately, in order to reduce channel switch time and improve channel transport efficiency, PCP/AP2 is before the target beacon transmitting time (TBTT) starting the BHI312 in little frequency band S6, can select the TBTT of the NP2 in large frequency band L1 is moved, as shown in Figure 3 d, make in the present embodiment, after NP2 be in succession BHI312 and without any space.

To interoperability mode and the backward compatibility mode of IEEE802.11ad

Above-mentioned example embodiment is also preferably intended to support the interoperability between dissimilar network equipment, under the example of 60GHz operation uses a model environment, this also can be illustrated as and provide the backward compatibility with service support to legacy network, legacy network is CWPAN or IEEE802.11aj such as, provides backward compatibility to IEEE802.11ad network.

According to IEEE802.11ad channelizing mechanism, IEEE802.11ad device only operates in large frequency band.Therefore, IEEE802.11ad device can start new network as PCP/AP, or can add the existing network in large frequency band as the non-APSTA of non-PCP/.But CWPAN or IEEE802.11aj device not only can operate in large frequency band, can also operate in little frequency band, therefore, it has so a kind of ability: in large frequency band, start new network, or starts new network in little frequency band.

IEEE802.11ad network can not support any interoperability to CWPAN or IEEE802.11aj network.Based on the principle of First come first served, if first IEEE802.11ad network takies large frequency band, so late CWPAN or IEEE802.11aj device is only to add IEEE802.11ad network as the non-APSTA of non-PCP/, when existing IEEE802.11ad network support Clustering mechanism, become member PCP/AP, or search for another available channel to start its network.Based on intentional and object, new equipment plays the effect of conventional apparatus in this case.

On the contrary, according to example embodiment, if first CWPAN or IEEE802.11aj network takies large frequency band, so there are two kinds of patterns that CWPAN or IEEE802.11aj network can be used for providing the IEEE802.11ad device entering coverage backward compatibility.

Traditional mode

In this traditional mode, CWPAN or IEEE802.11aj network by only operating as conventional apparatus provides backward compatibility in large frequency band.Therefore, decision is added CWPAN or IEEE802.11aj network as the non-APSTA of non-PCP/ by late IEEE802.11ad device, member PCP/AP is become when existing CWPAN or IEEE802.11aj network support Clustering mechanism, or search for another available channel with by using existing MAC protocol to start its network, this existing MAC protocol as in December, 2012 at IEEEP802.11ad ^tMdescribe in detail in-2012 standards " Part11:WirelessLANMediumAccessControl (MAC) andPhysicalLayer (PHY) Specifications-Amendment3:EnhancementsforVeryHighThrough putinthe60GHzband, " (" part 11: Wireless LAN Medium access control (MAC) and physical layer (PHY) specification--amendment 3: the enhancing of the high throughput in 60GHz frequency band ").

Mixed mode

When CWPAN or IEEE802.11aj network operates in little frequency band, mixed mode supports the backward compatibility of IEEE802.11ad device.Provide the interoperability between CWPAN or IEEE802.11aj device and the IEEE802.11ad device only operated in large frequency band usually operated in little frequency band.In the appointment MAC protocol of following detailed description according to example embodiment.

In the first scene, only have a network to operate in S5 or in S6, in the second scene, two networks operate respectively in S5 and S6.

For the first situation, without loss of generality, suppose that only network and specified device PCP/AP1 operate in little frequency band S5, and another little frequency band S6 there is no occupied, as shown in Figure 5 a.Not only in little frequency band S5, start TBTT according to the above-mentioned agreement 1, PCP/AP1 that coexists, also in large frequency band L1, send notification signal, such as, at the DMG beacon frame of NP (such as, NP1) period.

In the exemplary embodiment, conventional apparatus is allowed to add CWPAN or IEEE802.11aj network and the agreement played a role in CWPAN or IEEE802.11aj network is designated as agreement 4 and is discussed in more detail below this agreement.

Agreement 4: once conventional apparatus (such as, IEEE802.11ad device) arrive, its DMG beacon frame will sent during NP1 listened in large frequency band L1, and the network being added PCP/AP1 by bootstrap is as non-PCP/ non-ap stations (STA).Next, this non-PCP/ non-ap stations STA can from PCP/AP1 requesting channel time allocation.

Because do not take little frequency band S6, so SP or CBAP500 is distributed to the IEEE802.11ad device in large frequency band and notify scheduling result by DMG beacon frame or announcement frame to IEEE802.11ad device by PCP/AP1, during distribution, follow the IEEEP802.11ad in December, 2012 ^tMmedium access rule in-2012 standards " Part11:WirelessLANMediumAccessControl (MAC) andPhysicalLayer (PHY) Specifications-Amendment3:EnhancementsforVeryHighThrough putinthe60GHzband, " (" part 11: Wireless LAN Medium access control (MAC) and physical layer (PHY) specification--amendment 3: the enhancing to the high throughput in 60GHz frequency band ").

In order to distinguish different channel width, it is at large frequency band or in little frequency band that the bit 5 of AllocationType field is used to indicate distribution.Probable value is all listed in Fig. 4, and in the exemplary embodiment, Fig. 4 support is to the backward compatibility of IEEE802.11ad device.

When dispatch medium time to time, be identified as source or destination CWPAN, IEEE802.11aj or IEEE802.1ad device can during this cycle transmission frame.Specifically, if the non-APSTA of the non-PCP/ of CWPAN or IEEE802.11aj operated in little frequency band S5 wants to communicate with CWPAN, IEEE802.11aj or IEEE802.11ad device operated in large frequency band L1, so the frequency of oneself is switched to large frequency band L1 from little frequency band S5 by it, after this, its switching is got back to little frequency band S5 and is continued to operate in little frequency band S5.

For the second situation, two CWPAN or IEEE802.11aj networks are set up respectively in little frequency band S5 and S6 with specified device PCP/AP1 and PCP/AP2.In the exemplary embodiment, conventional apparatus is allowed to add CWPAN or IEEE802.11aj network and the agreement played a role in CWPAN or IEEE802.11aj network is designated as agreement 5 and is described below this agreement.

Agreement 5: add fashionable when IEEE802.11ad device (being called STAA) arrives and is intended as the non-APSTA of non-PCP/, first it will scan in large frequency band L1.Consider the problem of concealed terminal, STAA can receive the DMG beacon frame by the one in PCP/AP1 and PCP/AP2 or both transmissions.Without loss of generality, think that STAA receives DMG beacon frame from PCP/AP1 and intends to add the network of PCP/AP1.

Because PCP/AP1 and PCP/AP2 is independent operation in its oneself little frequency band, so SP or CBAP of STAA distributes preferably observe following two constraints:

I) PCP/AP1 cannot use existing distribution, and such as, BHI, SP or CBAP in large frequency band or in little frequency band, distribute the overlapping duration.

Ii) PCP/AP2 should understand the renewal schedule information of the STAA from PCP/AP1, then expands in schedule element below it and retains identical medium time.

See Fig. 5 b, in order to meet above-mentioned constraint, listen to DMG beacon frame at the latest or the announcement frame of PCP/AP2 in the BHI504 in the NP2502 of PCP/AP1 preferably in large frequency band L1 or in little frequency band S6, to upgrade its local scheduling information.Alternately, PCP/AP1 can directly ask schedule information at the latest from PCP/AP2, and during NP1, use the announcement frame comprising expansion schedule element to reply to receive it.Then, PCP/AP1 the schedule information of Based PC P/AP1 and PCP/AP2 can dispatch the distribution of STAA.After this, PCP/AP1 notifies by distributing claim frame the scheduling result that PCP/AP2 is new, and then, PCP/AP2 can use allocation approval frame to reply to determine whether ratify this scheduling.If approval or when not hearing reply, so PCP/AP1 comes to send to STAA the scheduling result that SP or CBAP distribute by the expansion schedule element that sends in the DMG beacon frame in large frequency band L1 or announcement frame.

Once finally determine, the distribution in little frequency band S5 and S6 in the exemplary embodiment also just preferably can not overlap with existing distribution the in large frequency band L1.The example that media interviews distribute illustrates in figure 5b.

If in another example embodiment, STAA selects the network adding PCP/AP2, so will switch the effect of PCP/AP1 and PCP/AP2 in said procedure, as understood by the skilled person.

Hereinafter, provide the scanning of actual example operation scenario based on the agreement in above-mentioned example embodiment, to illustrate the ability of the ability coexisted guaranteeing Multi net voting and the backward compatibility being provided to conventional apparatus.In figure 6, possible channel occupation status is listed.For each state, to explain, how agreement according to the proposition of above-described embodiment can guarantee coexisting of network when device is attempted to start new network together with existing protocol, and how can guarantee backward compatibility by providing interoperability support.Note, in order to the object described, consider the situation that channel band is taken by CWPAN or IEEE802.11aj network, because conventional I EEE802.11ad network can not provide compatible to CWPAN or IEEE802.11aj network and ensure or the guarantee that coexists, as understood by those skilled in the art.

New network is formed

Fig. 6 a shows so a kind of state: large frequency band L1 and L2 vacates, and can be used for the formation of new network.In this case, IEEE802.11ad can follow existing protocol to start new network, and CWPAN or 802.11aj device can follow existing protocol to start new network in L1 or L2, or follow the agreement of proposition to start new network in little frequency band S3, S4, S5 or S6, and follow example embodiment (agreement 1) to alleviate the interference between other networks.

Fig. 6 b and Fig. 6 c shows each state, under each state described, only has that a large frequency band is taken by C2PAN or IEEE802.11aj network and other large frequency band can be used for taking.New IEEE802.11ad device can use existing protocol setting up new network without in the channel taken.CWPAN or IEEE802.11aj device can follow existing protocol to start new network in without the large band channel taken, or follow agreement and the large band channel taken is divided into two less band channel, or follow agreement with two without the little band channel taken in start new network, and follow example embodiment (agreement 1) to alleviate the interference between other networks.

Fig. 6 d illustrates so a kind of state: large frequency band L1 and L2 is taken by CWPAN or IEEE802.11aj network.To notify IEEE802.11ad device in time, all available channels are all occupied, and, new network cannot be formed, pass through in large frequency band L1 except not according to existing protocol or in large frequency band L2, become the member PCP/AP of cluster.In another aspect, CWPAN or IEEE802.11aj device can be followed existing protocol and arbitrary large band channel through taking is divided into two less band channel.

Fig. 6 e to Fig. 6 h shows each state, under each state described, only has that a little frequency band is taken by CWPAN or IEEE802.11aj and other little frequency bands can be used for taking.IEEE802.11ad device can use existing protocol setting up new network without in the channel taken.CWPAN or IEEE802.11aj device can follow existing protocol to start new network in without the large band channel taken, or follow example embodiment (agreement 2) with adjacent with the little frequency band taken without the little band channel taken in start new network, or follow agreement with other two without the little band channel taken in start new network, and follow example embodiment (agreement 1) to alleviate the interference between other networks.

Fig. 6 i-l shows each state, and under each state described, CWPAN or IEEE802.11aj network takies a large frequency band and a little frequency band and only has a little frequency band to can be used for taking.If IEEE802.11ad device arrives, so will notify IEEE802.11ad device in time, all available channels are all occupied, and, new network cannot be formed, pass through in large frequency band L1 except not according to existing protocol or in large frequency band L2, become the member PCP/AP of cluster.In another aspect, CWPAN or IEEE802.11aj device can follow existing protocol so that the large band channel taken is divided into two less band channel, or follow example embodiment (agreement 2) with adjacent with the little frequency band taken without the little band channel taken in start new network.

Fig. 6 m and Fig. 6 n shows each state, and under each state described, two different CWPAN or IEEE802.11aj networks take any two the little frequency bands in same large frequency band, and another large frequency band can be used for taking.If IEEE802.Had device arrives, so IEEE802.11ad device can use existing protocol setting up new network without in the large frequency band taken.CWPAN or IEEE802.11aj device can follow existing protocol to start new network in without the large band channel taken, or follow agreement with other two without the little band channel taken in start new network, and follow agreement 1 to alleviate the interference between other networks.

Fig. 6 o to Fig. 6 r shows each state, and under each state described, two different CWPAN or IEEE802.11aj networks take any two the little frequency bands in the large frequency band of difference, and two other little frequency band can be used for taking.If IEEE802.11ad device arrives, so will notify that all available channels of IEEE802.11ad device are all occupied in time, and new network cannot be formed.In another aspect, CWPAN or IEEE802.11aj can follow example embodiment (agreement 2) to start new network in arbitrary little band channel without taking adjacent with the little frequency band taken.

Fig. 6 s and Fig. 6 t shows each state, and under each state, three different CWPAN or IEEE802.11aj networks take a large frequency band and other two little frequency bands.If IEEE802.11ad device arrives, so will notify IEEE802.11ad device in time, all available channels are all occupied, and, new network cannot be formed, except not according to existing protocol by becoming the member PCP/AP of cluster in the large frequency band taken.In another aspect, CWPAN or IEEE802.11aj device can follow existing protocol so that the large band channel taken is divided into two less band channel.

Fig. 6 u to Fig. 6 x shows each state, and under each state, CWPAN or IEEE802.11aj network takies any three little frequency bands, and only has a little frequency band to can be used for taking.If IEEE802.11ad device arrives, so will notify that all available channels of IEEE802.11ad device are all occupied in time, and new network cannot be formed.In another aspect, CWPAN or IEEE802.11aj device can follow example embodiment (agreement 2) to start new network in without the little band channel taken.

Fig. 6 y shows different CWPAN or IEEE802.11aj networks and takies all little frequency bands.When IEEE802.11ad device or CWPAN or IEEE802.11aj device arrive, will notify that all available channels are all occupied in time.

Conventional apparatus adds existing network and plays a role in existing network

For the state shown in Fig. 6 a, there is not existing network.

For the state shown in Fig. 6 b to Fig. 6 d, CWPAN or IEEE802.11aj network plays a role under traditional mode so that the IEEE802.11ad device service for adding network.

For the state shown in Fig. 6 e to Fig. 6 h, IEEE802.11ad device and CWPAN or IEEE802.11aj network follow example embodiment (agreement 4) to support interoperability.

For the state shown in Fig. 6 i to figure l, CWPAN or IEEE802.11aj network in large frequency band runs the IEEE802.11ad device service thought and add network under traditional mode, but CWPAN or the IEEE802.11aj network in little frequency band is followed example embodiment (agreement 4) and is thought that IEEE802.11ad device provides backward compatibility support.

For the state shown in Fig. 6 m and Fig. 6 n, IEEE802.11ad device and CWPAN or IEEE802.11aj network follow example embodiment (agreement 5) to support interoperability.

For the state shown in Fig. 6 o to Fig. 6 r, IEEE802.11ad device and CWPAN or IEEE802.11aj network follow example embodiment (agreement 4) to support interoperability.

For the state shown in Fig. 6 s and Fig. 6 t, CWPAN or IEEE802.11aj network in large frequency band run under traditional mode with, for adding the IEEE802.11ad device service of network, and CWPAN or the IEEE802.11aj network in little frequency band is followed example embodiment (agreement 5) and is thought that IEEE802.11ad device provides backward compatibility support.

For the state shown in Fig. 6 u to Fig. 6 x, follow example embodiment (agreement 5) and think that IEEE802.11ad device provides backward compatibility support having CWPAN or the IEEE802.11aj network operated in the little frequency band of the adjacent little frequency band taken, and follow example embodiment (agreement 4) and think that IEEE802.11ad device provides backward compatibility support having CWPAN or the IEEE802.11aj network operated in the little frequency band of the adjacent little frequency band vacated.

For the state shown in Fig. 6 y, IEEE802.11ad device and CWPAN or IEEE802.11aj network follow example embodiment (agreement 5) to support interoperability.

To the consideration of dynamic bandwidth operation

With reference to above-mentioned Fig. 6 a to 6y and above-mentioned various agreement, possible operation state is described, with guarantee network coexisted and have different channels voltinism can device between interoperability.Many Different Strategies can be there is: when maintaining network coexisted and interoperability, the set of the agreement proposed according to example embodiment and these agreements in existing protocol are realized its target.Will be described below some example policys, as how the agreement about proposition can effectively for completing the explaination of its target.

First example policy is called as the preferential traditional mode supporting conventional apparatus.In such a mode, along with the appearance of conventional apparatus in coverage, CWPAN or IEEE802.11aj network only switches and operates in large frequency band, and with to conventional apparatus, such as IEEE802.11ad device, provides backward compatibility.We the large frequency band of in large frequency band exemplarily to describe this pattern.

Consider such a case: CWPAN or IEEE802.11aj network takies a frequency band in little frequency band, and another the little frequency band in same large frequency band is idle.If IEEE802.11ad device arrives, so first it must be added in current C WPAN in large frequency band or IEEE802.11aj network.Then, CWPAN or IEEE802.11aj network proceeds combining channel program, and is switched to large frequency band to support IEEE802.11ad device.

In another case, suppose that two different CWPAN or IEEE802.11aj networks take two little frequency bands in same large frequency band.If IEEE802.11ad device arrives, so it can distribute without any SP or CBAP or add existing CWPAN or IEEE802.11aj network in unaccepted situation, until a network in CWPAN or IEEE802.11aj network stops it serving, and a remaining network completes combining channel program.

It is minimum exclusive occupying mode that second strategy example can be called as the support of conventional apparatus.If operated in a frequency band in the little frequency band of CWPAN or IEEE802.11aj network in current large frequency band, so it can not perform combining channel program to support the IEEE802.11ad device of being late.Therefore, unless existing or new CWPAN or IEEE802.11aj network operates in current large frequency band or large frequency band can be used for taking, otherwise IEEE802.11ad device is not allowed to add.What the support of conventional apparatus is limited to the IEEE802.11ad device channel notifying to be late takies situation, and late IEEE802.11ad device can not obtain any service from CWPAN or IEEE802.11aj network.

Above-mentioned example embodiment can show one or more following characteristics:

-for common spectrum band overlapping or reside in the new net definitions agreement that vacating in common spectrum frequency band start in channel band, to send notification signal during announcement period in common signal channel spectral hand.

-notifying new equipment by the specified device periodic notification signal of respective operational network with interval notification signal, described new equipment is wanted to start network operation in the common spectrum frequency band of existing network.

Unique MAC operation of the specified device of each network in-outstanding operational network, wherein, switching between the transmission of operational network in the channel band of himself (when operating in their local networks) and the transmission in common spectrum frequency band, there is existing network with notice from other devices of identical network type or different network type occupy a part of common spectrum frequency band for sending notification signal in the transmission in described common spectrum frequency band.

-, coordinate the transmission of the notification signal that the different specified devices in respective separate network are undertaken by channel spectral hand, to avoid between the device in heterogeneous networks by any potentially conflicting carried out that communicates, described heterogeneous networks common spectrum frequency band or can run at device other specify in spectral hands, described respective separate network operates in other channel spectral hands at designated period of time.

-be provided in the fidelity of the notification signal sent in common signal channel spectral hand, mode sets up announcement period in the network by operating in other channel spectral hands, in other channel spectral hands described, all transmission in the channel spectral hand of their each automatic networks of the device temporary suspends in each network, and, when by heterogeneous networks (described heterogeneous networks common spectrum frequency band or device exercisable other specify in spectral hands) in device between communication achieve synchronous and two or more networks when operating, make the quiet cycle synchronisation of separate network, .

-definition is used for the MAC protocol of holding consultation between existing network, with the position of the announcement period in common signal channel spectral hand and duration are adjusted to be applicable to above to common spectrum band overlapping or the requirement residing in the network operated in common spectrum frequency band.

-comprising one group of MAC protocol to coordinate the synchronous of announcement period in the transmission in accurate omnidirectional range cycle in common spectrum frequency band and all-network in little frequency band, described transmission is being carried out with common spectrum band overlapping or in residing in common spectrum frequency band multiple channel bands by specified devices all in network.

-support package is containing the operation of network of heterogeneous networks device with different channels ability, and mode starts these networks by the MAC protocol of specified device, adds these networks and operate in these networks.

-enable the heterogeneous networks device with different channelizing abilities carry out interoperability, by limiting the MAC protocol of communication, communicate with one another when allowing them to operate in identical network.

Above-mentioned accurate omnidirectional range frame is in the exemplary embodiment essential information and the direction of action further, preferably to allow the other technologies identification be operated in 60GHz, and do not have to make Independent Decisiveness when Main change at its basic network scanning imaging system.

Embodiments of the invention are passable, such as:

-by the frequency spectrum resource be shared in public visit spectrum bands, the network operated in overlapping frequency spectrum frequency band is coexisted.

-comprising the announcement period of circulation, the announcement period of described circulation may be used for informing network and is present in common spectrum frequency band, and supports the interoperability that has between the device of different channels ability.

-for wanting the conventional apparatus of accessing frequency spectrum resource, want not change network startup scanning imaging system.

-by coordinating and the announcement period of synchronous different operating network is guaranteed for the announcement period in public visit band communication fidelity.

-in notice cycle with the frequency in quiet cycle, provide great flexibility to cater to same or different existing wireless technology.Therefore, can easily method of adjustment to be applicable to different operation hypothesis and Action Target.

-be applicable to enforcement one group of MAC protocol, this MAC protocol allows to carry out effectively adjustment and synchronous to independent operation network, with few burden and bandwidth waste and between different channels frequency band minimum channel switch time adjust announcement period and quiet cycle.

-effectively implement one group of MAC protocol, whenever dividing bandwidth or expanding, this MAC protocol allows network to switch smoothly between common spectrum frequency band (that is, large frequency band) and network channel frequency band (that is, little frequency band).

Example embodiment of the present invention can for the use formulation in the cycle of issuing a separate notice of distributing in the common signal channel spectral hand of each network and design agreement, this network operates in channel band that is overlapping with common signal channel spectral hand or that reside in common signal channel spectral hand, wherein, announcement period is:

Zero for sending the notification signal in common signal channel spectral hand, to notify the seizure condition of other device common signal channel spectral hands,

Zero for being provided in the opposing traffic link between the device with different channels ability, with the interoperability between implement device,

Zero regularly distributes in common spectrum frequency band,

Zero ensures fidelity by the radio silence cycle of instruction in all channel bands that are overlapping with common signal channel spectral hand or that reside in common signal channel spectral hand,

Zero is synchronous and adjust, make one-period in succession and then another cycle time, do not have announcement period overlapping with another announcement period,

The formation of zero outstanding new network and there is the maintenance of network of the device with different channels ability.

Fig. 7 shows flow chart 700, illustrates the method for the operation of a kind of executive communication network according to an embodiment, and this communication network operates in channel that is overlapping with common signal channel spectral hand or that reside in common signal channel spectral hand.In a step 702, there is no other networks under state that is overlapping with common signal channel spectral hand or that operate in residing in common signal channel spectral hand one other channel, the announcement period of operational network periodic allocation on common signal channel spectral hand (NP).In step 704, notification signal is sent in the NP of each periodic allocation of operational network at least in common signal channel spectral hand.

Operational network is that the described NP of one or more other networks retains the seeervice cycle (SP) in described common signal channel spectrum, and these one or more other networks are start-up operation in one other channel that is overlapping with common signal channel spectral hand or that reside in common signal channel spectral hand.If a network in one or more other networks stops, so operational network can stop retaining the SP distribution of the NP of the network be dispensed in one or more other networks.If a network in one or more other networks stops, so operational network expands its NP to contain the whole duration of the NP of the NP before it and a network in one or more other networks.If a network in one or more other networks described stops, so operational network can, before starting its target beacon transmitting time (TBTT) in its channel, make its TBTT in common signal channel spectral hand move.

Method may further include: make the NP between operational network with one or more other network synchronous.

The notification signal of the first kind can comprise beacon and send interval (BTI).The notification signal of Second Type can comprise beacon header interval (BHI).Can be each continuous number (N of the notification signal of the first kind _{max_A}) distribute the notification signal of at least one Second Type, wherein, N _{max_A}decided by the maximum number of beacon interval (Bi), after this, expect association beamforming training (A-BFT) or notice to send interval (ATI).

Method may further include: object network of network component scans common signal channel spectral hand seeks the notification signal of operational network; Networking component is just operated by notification signal determination operation network in the first channel, and this first channel overlaps with common signal channel spectral hand or resides in common signal channel spectral hand; And networking component adds operational network as non-PCP/ non-ap stations (STA).

Method may further include: STA sends request the object network startup made in second channel to operational network, this second channel is overlapping with common signal channel spectral hand or reside in common signal channel spectral hand.Method may further include: STA receives approval from operational network and makes the object network startup second channel.

Method may further include: STA is to the request of operational network transmitting channel time devided modulation, and operational network distributes to the STA in common signal channel spectral hand by SP or based on the access cycle (CBAP) of competition.Whether method can comprise instruction and distribute in the first channel or in common signal channel spectral hand.Operational network can distribute SP or CBAP based on the existing distribution in another network, and this another network is start-up operation in one other channel that is overlapping with common signal channel spectral hand or that reside in common signal channel spectral hand.Operational network can scan common signal channel spectral hand or second channel to determine the information about the existing distribution in other networks.Operational network can from the information of other network requests about the existing distribution other networks.

Fig. 8 shows flow chart 800, illustrates a kind of method performing the operation of object communication network according to an embodiment.In step 802, object network of network component scans common signal channel spectral hand seeks the notification signal of operational network.In step 804, networking component is just operated by notification signal determination operation network in the first channel, and this first channel overlaps with common signal channel spectral hand or resides in common signal channel spectral hand.In step 806, networking component adds existing network as non-PCP/ non-ap stations (STA).

STA can send request to operational network the object network startup that makes in second channel, and this second channel is overlapping with common signal channel spectral hand or reside in common signal channel spectral hand.STA can receive approval from operational network and make the object network startup second channel, STA can to the request of operational network transmitting channel time devided modulation, and operational network can distribute to the STA in common signal channel spectral hand by SP or based on the access cycle (CBAP) of competition.Operational network can distribute SP or CBAP based on the existing distribution in another network, and this another network is start-up operation in one other channel that is overlapping with common signal channel spectral hand or that reside in common signal channel spectral hand.Operational network can scan common signal channel spectral hand or second channel to determine the information about the existing distribution in other operational network.Operational network can from the information of other operational network requests about the existing distribution other operational network.

Fig. 9 shows schematic diagram, illustrates the networking component 900 of a kind of communication network according to an embodiment, and this communication network operates in the first channel that is overlapping with common signal channel spectral hand or that reside in common signal channel spectral hand.Networking component 900 comprises: distributor 902, this distributor 902 is not for having other networks under state that is overlapping with common signal channel spectral hand or that operate in residing in common signal channel spectral hand one other channel, the announcement period of periodic allocation on common signal channel spectral hand (NP); And transmitter 904, send notification signal in the NP of this transmitter 904 for each periodic allocation in common signal channel spectral hand.

Distributor 902 is configured to, for the NP at one or more other networks retains the seeervice cycle (SP) in common signal channel spectrum.If a network in one or more other networks stops, so distributor 902 is configured to the SP distribution of the NP stopping the network remaining in one or more other networks.If a network in one or more other networks stops, so distributor 902 is configured to expand its NP to cover the whole duration of the NP of the NP before it and this each and every one network in one or more other networks.If a network in one or more other networks stops, so distributor 902 is configured to, before starting its target beacon transmitting time (TBTT) in its channel, its TBTT in common signal channel spectral hand be moved.

Networking component 900 may further include: synchronizer 906, and this synchronizer 906 is for making the NP between each network synchronous.

Implement in the software that distributor 902 and/or transmitter 904 and/or synchronizer 906 can perform on the computing device and/or in appointment hardware.

Figure 10 shows the schematic diagram of the networking component 1000 of the object communication network illustrated according to an embodiment.This networking component 1000 comprises: receiver 1002, and the notification signal of operational network sought by this receiver 1002 for scanning common signal channel spectral hand; Determiner 1004, this determiner 1004 for just operating by notification signal determination operation network in first passage, and this first passage overlaps with common signal channel spectral hand or resides in common signal channel spectral hand; And wherein, networking component 1000 is configured to add existing network as non-PCP/ non-ap stations (STA).

Networking component 1000 may further include: transmitter 1006, this transmitter 1006 sends request the object network startup made in second channel to operational network, this second channel is overlapping with common signal channel spectral hand or reside in common signal channel spectral hand.Receiver 1002 can be configured to receive approval from operational network, and networking component is configured in second channel, start object network.

Transmitter 1006 can to the request of operational network transmitting channel time devided modulation.Receiver 1002 can be configured to receive that instruction distributes is information in the first channel or in common signal channel spectral hand.

Implement in the software that receiver 1002 and/or determiner 1004 and/or transmitter 1006 can perform on the computing device and/or in appointment hardware.

Term " substantially " can comprise the excursion of " just in time " and its +/-5%.Exemplarily and nonrestrictive, following embodiment can be contained in phrase " A and B is substantially the same ": A and B is identical, or A can in the excursion of such as B value +/-5%, and vice versa.

Although show and describe the present invention especially with reference to specific embodiment, but those skilled in the art is to be understood that, when do not depart from as appended claims limit the spirit and scope of the present invention, the change of various forms and details can be made in this article.Therefore scope of the present invention is indicated by appended claims, and is therefore intended to include all changes in the meaning of the equivalent falling into claims and scope.

Claims

1. a method for the operation of executive communication network, described communication network operates at the channel overlapping with common signal channel spectral hand or in residing in common signal channel spectral hand channel, and described method comprises:

There is no other networks under state that is overlapping with described common signal channel spectral hand or that operate in residing in described common signal channel spectral hand one other channel, the announcement period (NP) of described operational network periodic allocation on described common signal channel spectral hand; And

Notification signal is sent in the NP of each periodic allocation of described operational network at least in described common signal channel spectral hand.

2. method according to claim 1, comprises further:

Described operational network is the seeervice cycle (SP) that the described NP of one or more other networks is retained in described common signal channel spectrum, and one or more other networks described are start-up operation in one other channel that is overlapping with described common signal channel spectral hand or that reside in described common signal channel spectral hand.

3. method according to claim 2, wherein, if a network in one or more other networks described stops, so described operational network stops retaining, and the SP of the described NP of the described network to one or more other networks described distributes.

4. method according to claim 2, wherein, if a network in one or more other networks described stops, so described operational network expands its NP to contain the whole duration of the described NP of the NP before it and the described network in one or more other networks described.

5. method according to claim 2, wherein, if a network in one or more other networks described stops, so described operational network, before starting its target beacon transmitting time (TBTT) in its channel, makes its TBTT in described common signal channel spectral hand move.

6. according to method in any one of the preceding claims wherein, comprise further: make the NP between described operational network with one or more further network described synchronous.

7. according to method in any one of the preceding claims wherein, wherein, the first type of described notification signal comprises beacon transmission interval (BTI).

8. method according to claim 7, wherein, the second type of described notification signal comprises beacon header interval (BHI).

9. method according to claim 8 wherein, is each consecutive numbers, the N of the notification signal of the described first kind _{max_A}, distribute at least one notification signal of described Second Type, wherein, N _{max_A}decided by the maximum number of beacon interval (Bi), after this, expection is association beamforming training (A-BFT) or notices transmission interval (ATI).

10. according to method in any one of the preceding claims wherein, further comprising the steps:

Described in object network of network component scans, common signal channel spectral hand seeks the notification signal of described operational network;

By described notification signal, described networking component determines that described operational network just operates in the first channel, described first channel overlaps with described common signal channel spectral hand or resides in described common signal channel spectral hand; And

Described networking component adds described operational network as non-PCP/ non-ap stations (STA).

11. methods according to claim 10, comprise further: described STA sends request the described object network startup made in second channel to described operational network, described second channel is overlapping with described common signal channel spectral hand or reside in described common signal channel spectral hand.

12. methods according to claim 11, comprise further: described STA receives approval from described operational network and makes the described object network startup described second channel.

13. methods according to claim 10, comprise further: described STA is to the request of described operational network transmitting channel time devided modulation, and described operational network distributes SP or the access cycle (CBAP) based on competition to the described STA in described common signal channel spectral hand.

14. methods according to claim 13, comprising instruction distribution is in described first channel or in described common signal channel spectral hand.

15. methods according to claim 13 or 14, wherein, described operational network distributes described SP or CBAP based on the existing distribution in another network, and another network described is start-up operation in one other channel that is overlapping with described common signal channel spectral hand or that reside in described common signal channel spectral hand.

16. methods according to claim 15, comprise further: described operational network scans described common signal channel spectral hand or described second channel, to determine the information about the described existing distribution in other networks described.

17. methods according to claim 15 or 16, comprise further: described operational network is from the information of other network requests described about the described existing distribution other networks described.

18. 1 kinds of methods performing the operation of object communication network, comprise the following steps:

Common signal channel spectral hand described in described object network of network component scans finds the notification signal of operational network;

Described networking component adds described existing network as non-PCP/ non-ap stations (STA).

19. methods according to claim 18, comprise further: described STA sends request the described object network startup made in second channel to described operational network, described second channel is overlapping with described common signal channel spectral hand or reside in described common signal channel spectral hand.

20. methods according to claim 19, comprise further: described STA receives approval from described operational network and makes the described object network startup described second channel.

21. methods according to claim 19, comprise further: described STA is to the request of described operational network transmitting channel time devided modulation, and described operational network distributes SP or the access cycle (CBAP) based on competition to the described STA in described common signal channel spectral hand.

22. methods according to claim 20 or 21, wherein, described operational network distributes SP or CBAP based on the existing distribution in another operational network, and another operational network described operates in one other channel that is overlapping with described common signal channel spectral hand or that reside in described common signal channel spectral hand.

23. methods according to claim 22, comprise further: described operational network scans described common signal channel spectral hand or described second channel, to determine the information about the described existing distribution in other operational network described.

24. methods according to claim 22 or 23, comprise further: described operational network is from the information of other operational network requests described about the described existing distribution other operational network described.

The networking component of 25. 1 kinds of communication networks, described communication network operates in the first channel that is overlapping with common signal channel spectral hand or that reside in common signal channel spectral hand, and described networking component comprises:

Distributor, described distributor is used for not having other networks under state that is overlapping with described common signal channel spectral hand or that operate in residing in described common signal channel spectral hand one other channel, the announcement period (NP) of periodic allocation on described common signal channel spectral hand; And

Transmitter, described transmitter is used for sending notification signal in the NP of each periodic allocation in described common signal channel spectral hand.

26. networking components according to claim 25, wherein, described distributor arrangement is, for being retained in the seeervice cycle (SP) in described common signal channel spectrum at the described NP of one or more other networks.

27. networking components according to claim 26, wherein, if a network in one or more other networks described stops, described distributor arrangement retains for stopping, and the SP of the described NP of the described network to one or more other networks described distributes.

28. networking components according to claim 26, wherein, if a network in one or more other networks described stops, so described distributor arrangement is that its NP of expansion is to contain the whole duration of the described NP of the NP before it and the described network in one or more other networks described.

29. networking components according to claim 26, wherein, if a network in one or more other networks described stops, described distributor arrangement is before starting its target beacon transmitting time (TBTT) in its channel, and its TBTT in described common signal channel spectral hand is moved.

30. networking components according to any one of claim 25 to 29, comprise synchronizer further, described synchronizer is for making the described NP between each network synchronous.

31. networking components according to any one of claim 25 to 30, wherein, the first type of described notification signal comprises beacon and sends interval (BTI).

32. networking components according to claim 31, wherein, the second type of described notification signal comprises beacon header interval (BHI).

33. networking components according to claim 32 wherein, are each consecutive numbers, the N of the notification signal of the described first kind _{max_A}, distribute at least one notification signal of described Second Type, wherein, N _{max_A}decided by the described maximum number of beacon interval (Bi), after this, expection is association beamforming training (A-BFT) or notices transmission interval (ATI).

The networking component of 34. 1 kinds of object communication networks, described networking component comprises:

Receiver, the notification signal of operational network sought by described receiver for scanning common signal channel spectral hand;

Determiner, described determiner is used for determining that described operational network just operates in first passage by described notification signal, and described first passage overlaps with described common signal channel spectral hand or resides in described common signal channel spectral hand; And

Wherein, described networking component is configured to add described existing network as non-PCP/ non-ap stations (STA).

35. networking components according to claim 34, comprise further: transmitter, described transmitter sends request the described object network startup made in second channel to described operational network, described second channel is overlapping with described common signal channel spectral hand or reside in described common signal channel spectral hand.

36. networking components according to claim 35, wherein, described receiver is configured to receive approval from described operational network, and described networking component is configured to the described object network startup that makes in described second channel.

37. networking components according to claim 34, comprise transmitter further, and described transmitter is to the request of described operational network transmitting channel time devided modulation.

38. according to networking component according to claim 37, and wherein, described receiver is configured to receive that instruction distributes is information in described first channel or in described common signal channel spectral hand.