CN102342162B

CN102342162B - Channel resource allocation method in wireless network and equipment

Info

Publication number: CN102342162B
Application number: CN200980157634.5A
Authority: CN
Inventors: 金重宪; 全范镇
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2009-06-09
Filing date: 2009-11-13
Publication date: 2016-05-04
Anticipated expiration: 2029-11-13
Also published as: KR20100132409A; CN102342162A; KR101663613B1

Abstract

In wireless network by channel resource the method from the first devices allocation to the second equipment, comprising: from the telegon receive channel resource allocation information of wireless network, with allocation of channel resources; Pass through distributed channel resource to the second equipment transmission data; From the second equipment receive channel resource request information, to ask a part for the channel resource that the first devices allocation distributed; And determine whether the described part of the channel resource distributing from telegon to be assigned to the second equipment according to channel resource solicited message.

Description

Channel resource allocation method in wireless network and equipment

Technical field

The present invention relates to wireless system, and more specifically, relate to and belonging to establishing of wireless networkThe method and apparatus of allocation of channel resources between standby.

Background technology

Recently, developed bluetooth and Wireless Personal Network (WPAN) technology, its such asThe limited place of family or small company, shape between minority object digital device relativelyBecome wireless network, to allow at exchanged between equipment audio frequency or video data. WPAN canBe used to handing in the information between minority object digital device relatively in relatively near distanceChange, and the low-power having realized between digital device is communicated by letter with low cost. In June, 2003The IEEE802.15.3 that passes through for 12nd (wireless for a high-rate wireless territory net (WPAN)Media Access Control (MAC) and physical layer (PHY) specification) define two-forty WPANMAC layer and the specification of physical layer (PHY).

Fig. 1 is the general introduction figure of the example of the wireless privately owned Access Network of diagram (WPAN). As Fig. 1Shown in, WVAN configures between the personal device in the limited space such as familyNetwork, and there is no seamless link by configuring directly at the network of communication between devicesIn situation, allow exchange message between application. With reference to figure 1, WPAN comprises two or moreIndividual subscriber equipment 11 to 15, one of them is as telegon 11. Telegon 11 provides WPANBasic timing, and for controlling service quality (QoS) requirement. The example bag of subscriber equipmentDraw together computer, PDA, notebook, DTV, video camera, digital camera, beatSeal machine, Mike, loudspeaker, headphone, bar code reader, display, Yi JifengCellular telephone. All digital devices can be used as subscriber equipment.

WPAN is not designed in advance, but there is no central basis instrument as requiredThe self-organizing network (being called hereinafter, " piconet ") forming in situation about helping. Will be in detailThe thin process that forms a piconet of describing. When the random device that can be used as telegon operation is heldWhen the function of row telegon, piconet starts. Before associated with existing piconet, or openBefore moving new piconet, all equipment is carried out scanning. Scanning mean equipment collect andThe information of memory channel, and whether search there is existing piconet. Ordered from upper strataOrder for the equipment that starts piconet not with on accidental channel before the piconet phase that formsIn associated situation, form new piconet. Come by the data based on obtaining in scan periodSelection has the channel of less interference, and carrys out broadcast beacon by selected channel, equipmentStart piconet. In this case, beacon mean timing allocation information, in piconetThe information of other equipment and the control information of broadcasting by telegon, micro-with control and managementMicrogrid.

Fig. 2 is the view that is shown in the example of the superframe using in piconet.

Timing controlled in piconet is carried out based on superframe substantially. With reference to figure 2, byStart each superframe in the beacon transmitting from telegon. The contention access period is used to allow to establishStandby transmission ordered, or transmits the asynchronous data based on competition. The channel time allocation period comprisesManagement channel time block (MCTB) and channel time blocks (CTB). MCTB is wherein controlledThe period that information processed can transmit between telegon and equipment or between equipment. CTBThat wherein asynchronous data or synchrodata can be established between equipment and telegon or at otherThe period of transmitting between standby. For each superframe, by telegon determine CAP, MCTB,With number and the position of CTB, and send it to other equipment in piconet by beacon.

When the random device in piconet need to be sent to data telegon or other equipmentTime, device request telegon divides the channel resource that is used in transfer of data, and telegon will be believedRoad resource is distributed to the equipment in the scope of available channel resources. If CAP is present in superframe,And telegon is received in the transfer of data in CAP, equipment can transmit by CAP littleThe data of capacity, and need to be from telegon allocation of channel resources.

If the number of the equipment in piconet is less, because of the data from each equipmentThe channel resource of transmission is sufficient, so do not have problems in the distribution of channel resource. SoAnd, if because the equipment of greater number causes the deficiency of channel resource, even or equipmentNumber less, if but specific equipment constantly busy channel transmit jumbo numberAccording to, such as mobile picture, there will be following problem, that is, even if having, want other equipmentThe data that transmit, also to other devices allocation channel resources. Thus, may not carry outCommunication. And, can also there is following problem, that is, be less than the channel resource of data capacityBe assigned to other equipment.

In aspect this, study without any problem in the situation that, between equipmentEffectively carry out the whole bag of tricks of two-way communication.

Summary of the invention

Technical problem

Therefore, designed the present invention for substantially eliminating the restriction due to correlation techniqueOne or more problem causing with shortcoming.

One object of the present invention is to provide a kind of and effectively divides between the equipment of wireless networkThe method of allocating channel resource.

Another object of the present invention is by be assigned to an equipment to other devices allocationChannel resource, allow in the situation that not being subject to telegon and disturbing two between actuating equipmentTo communication.

Additional advantage of the present invention, object and feature by partly after descriptionIn set forth, and after part those skilled in the art carries out following inspection to itTo become apparent, or can learn from enforcement of the present invention. Object of the present invention withAnd other advantages will be by particularly pointing out in written description and claim and appended accompanying drawingStructure realize and obtain.

Technical solution

In order to realize these objects and other advantages, and according to object of the present invention, asThis implements and extensively describes ground, according to a first aspect of the invention, a kind of in wireless network fromThe first equipment, to the method for the second devices allocation channel resource, comprising: from telegon receive channelResource allocation information, described signal channel resource allocation information be used to by described channel resource allocation toDescribed the first equipment; By described channel resource to described the second equipment transmission data; Receive letterRoad resource request information, described channel resource solicited message is used to ask described the first equipment to incite somebody to actionA part for described channel resource is distributed; And according to described channel resource solicited message,Described in determining whether the described part of the described channel resource distributing from described telegon to be assigned toThe second equipment. Described channel resource is channel time blocks (CTB). Described channel resource request letterBreath is included in HRP (high-rate physical layer) ACK head.

If determine the described allocation request of channel resources of refusal, described method further comprises:Data are sent to institute by whole part by the described channel resource from described telegon distributionState the second equipment. In this case, described method further comprises: to described the second equipmentTransfer channel resource allocation information, to refuse described allocation request of channel resources. Described channel moneySource assignment information is included in MAC (media Access Control) head.

On the other hand, if determine to accept described allocation request of channel resources, described method is enteredOne step comprises: the part by described channel resource is come to described the second equipment transmission data;And come from described second by other parts except the described part of described channel resourceEquipment receiving data. In this case, described method further comprises: establish to described secondThe described signal channel resource allocation information of standby transmission, to accept described allocation request of channel resources. DescribedSignal channel resource allocation information is included in described MAC head.

And described method further comprises: receive channel resource changing solicited message, described inChannel resource changes the solicited message request of being used to and increases or reduce to described the second devices allocationDescribed channel resource.

In this case, described method further comprises: changing according to described channel resource pleaseAsk information to determine whether changing the scope of the described channel resource of distributing to described the second equipment.Described channel resource changes solicited message and is included in described HRPACK head. If determinedRefuse described channel resource and change request, described method further comprises: maintain and distribute to instituteState the scope of the described channel resource of the second equipment, and to described the second equipment transfer channel moneySource changes information, changes request to refuse described channel resource.

On the other hand, if determine the scope of the channel resource that changes second equipment that is assigned to,Describedly further comprise: change solicited message according to described channel resource, by described channelA part for the change scope of resource is come to described the second equipment transmission data; And by exceptOther parts outside the described part of the change scope of described channel resource are established from described secondThe standby data that receive. In this case, described method further comprises: to described the second equipmentTransfer channel resource changing information, changes request to accept described channel resource. Described channel moneySource change information is included in described MAC head.

In order to realize these objects and other advantages, and according to object of the present invention, asThis enforcement and extensively description ground, according to a second aspect of the invention, one will in wireless networkChannel resource is given the method for the first equipment from the second devices allocation, comprising: by channel resource fromThe first equipment receiving data, from telegon to described the first devices allocation channel resource; And passThe resource request information of delivering letters, described channel resource solicited message is used to ask described first to establishA standby next part to channel resource described in described the first devices allocation. Described channel resource requestInformation is included in HRP (high-rate physical layer) ACK head.

If the gamut by the channel resource from described telegon distribution comes from described firstEquipment receiving data, described method further comprises: to described the first equipment transmission dataAck/nack signal. In this case, described method further comprises: from described firstEquipment receive channel resource allocation information, to refuse allocation request of channel resources. Described channel moneySource assignment information is included in MAC (media Access Control) head.

On the other hand, if by the part as the channel resource distributing from described telegonThe first channel resource come from described the first equipment receiving data, described method further comprises:Come to transmit number to described the first equipment by other parts except described the first channel resourceAccording to. In this case, described method further comprises: from described the first equipment receive channelResource allocation information, to accept channel resource request. Described signal channel resource allocation information is includedIn described MAC head.

And described method further comprises: to described the first equipment transfer channel resource changingSolicited message, to ask to increase or reduce the channel resource being distributed. Described channel resource changesBecoming solicited message is included in HRPACK head.

If receive data by described the first channel resource from described the first equipment, described inMethod further comprises: come to institute by other parts except described the first channel resourceState the first equipment transmission data. In this case, described method further comprises: from describedThe first equipment receive channel resource changing information, changes request to refuse described channel resource. InstituteStating channel resource change information is included in described MAC head.

On the other hand, if receive data by second channel resource from described the first equipment,Described method further comprises: by other parts except described second channel resourceCome to described the first equipment transmission data. In this case, described method further comprises:From described the first equipment receive channel resource changing information, please to accept described channel resource changeAsk. Described channel resource change information is included in described MAC head.

In order to realize these objects and other advantages, and according to object of the present invention, asThis implements and extensively describes ground, and according to a third aspect of the invention we, a kind of conduct is from wireless networkIn telegon and be assigned with the equipment of the first equipment of channel resource, described equipment comprises:Delivery module, described delivery module by the described channel resource that distributes from described telegon to theTwo equipment transmission datas; Receiver module, described receiver module is from described the second equipment receive channelResource allocation request information; And channel resource control module, described channel resource control moduleDetermine whether to described in described the second devices allocation according to described allocation request of channel resources informationA part for channel resource.

If determine to accept described allocation request of channel resources, described channel resource control moduleDescribed part by described channel resource is come to described the second equipment transmission data, and passes throughOther parts except the described part of described channel resource are come to receive from described the second equipmentData. In this case, described channel resource control module by described delivery module come toDescribed the second equipment transfer channel resource allocation information, to accept described allocation request of channel resources.

Described receiver module receive channel resource changing solicited message, described channel resource changes pleaseAsk information to be used to ask to increase or reduce to distribute to the described channel money of described the second equipmentSource, and described channel resource control module determines whether to change described the second equipment that is assigned toThe scope of described channel resource.

In this case, if determine that the described channel resource of refusal changes request, described letterRoad resource control module maintains the scope of the described channel resource that is assigned to described the second equipment.And, described channel resource control module by described delivery module to described the second equipment transmissionChannel resource changes information, changes request to refuse described channel resource.

On the other hand, if determine to change the model of the channel resource that is assigned to described the second equipmentEnclose, described channel resource control module changes solicited message according to described channel resource, passes throughThe described part of the described channel resource of change scope is come to described the second equipment transmission data, andAnd establish from described second by other parts except the described part of described channel resourceThe standby data that receive. In this case, described channel resource control module is by described transmission mouldPiece, to described the second equipment transfer channel resource changing information, changes to accept described channel resourceRequest.

Beneficial effect

According to embodiments of the invention, can obtain following advantage.

First, the first equipment on wireless network is to its channel resource of the second devices allocation, byThis can effectively use channel resource between equipment.

In this case, because equipment can use distributed channel resource, and do not needDispatch or set up channel time, so equipment does not ask telegon to distribute independent channelResource, thus, can be in the situation that not having telegon to disturb the two-way between actuating equipmentLetter.

Should be appreciated that the advantage that can obtain by the present invention is not limited to above-mentioned advantage,And from following description, other advantages of not mentioning are for the skill in field under the present inventionArt personnel will be apparent.

Brief description of the drawings

Accompanying drawing is included to provide a further understanding of the present invention, and is incorporated in the applicationIn and form the application's a part, accompanying drawing illustrates embodiments of the invention (multiple), andTogether with the description for explaining principle of the present invention. In the accompanying drawings:

Fig. 1 is the view of the example of diagram WPAN;

Fig. 2 is the view that is shown in the example of the superframe using in piconet;

Fig. 3 is the view of the example of diagram WVAN;

Fig. 4 is the looking of frequency band that is shown in the HRP channel that uses in WVAN and LRP channelFigure;

Fig. 5 is the view that is shown in the example of the superframe using in WVAN;

Fig. 6 is the view that is shown in another example of the superframe using in WVAN;

Fig. 7 is the view that is shown in the protocol layer architecture realizing in the equipment of WVAN;

Fig. 8 is shown in wireless network channel resource is assigned to random device from telegonThe flow chart of the example of program;

Fig. 9 illustrates according to an embodiment of the invention, between the equipment of wireless network, dividesThe flow chart of the example of the process of allocating channel resource;

Figure 10 illustrates according to an embodiment of the invention, change the equipment of wireless network itBetween the flow chart of example of process of scope of the channel resource that distributes;

Figure 11 illustrates according to an embodiment of the invention, comprises allocation request of channel resources letterBreath and channel resource change the view of the example of solicited message;

Figure 12 illustrates according to an embodiment of the invention, between the equipment by wireless networkChannel resource allocation and the view of the example of the data that transmit and receive;

Figure 13 illustrates according to an embodiment of the invention, between the equipment by wireless networkChannel resource allocation and the view of another example of the data that transmit and receive;

Figure 14 illustrates in accordance with another embodiment of the present invention, between the equipment of wireless networkThe flow chart of the example of the process of allocation of channel resources;

Figure 15 illustrates in accordance with another embodiment of the present invention, changes the equipment at wireless networkBetween the flow chart of example of process of scope of the channel resource that distributes;

Figure 16 illustrates in accordance with another embodiment of the present invention, comprises allocation request of channel resourcesInformation and channel resource change the view of the example of solicited message;

Figure 17 illustrates in accordance with another embodiment of the present invention, by the equipment at wireless networkBetween the view of example of allocation of channel resources and the data that transmit and receive;

Figure 18 illustrates in accordance with another embodiment of the present invention, by the equipment at wireless networkBetween the view of another example of channel resource allocation and the data that transmit and receive; And

Figure 19 illustrates according to an embodiment of the invention, comprises equipment wide of wireless networkBroadcast the view of the example of signal processing system.

Detailed description of the invention

Hereinafter, by the preferred embodiments of the present invention will easily understand structure of the present invention,Operation and other features, the example of preferred embodiment is illustrated in appended accompanying drawing. BelowThe embodiment describing is applied to technical characterictic of the present invention as the wireless of a kind of WPAN and looksFrequently the example of LAN (WVAN).

Fig. 3 is the schematic representation of the example of diagram WVAN. As shown in Figure 1, WVAN bagDraw together two or more subscriber equipment 22 to 25, one of them serves as telegon 21. CoordinateDevice 21 provides the basis timing of WVAN, maintains the track of the equipment that belongs to WVAN, andAnd for controlling service quality (QoS) requirement. Telegon is carried out its function and is used as and belongs to simultaneouslyIn an equipment of WVAN. Other equipment 22 to 25 different from telegon 21 can be openedBegin to flow and connect.

A difference between the WVAN shown in the WVAN shown in Fig. 3 and Fig. 1The WVAN that is Fig. 3 supports two kinds of physics (PHY) layer. , WVAN supports following thingReason layer, that is, and two-forty physics (HRP) layer and low-rate physical (LRP) layer. HRP layer isCan support the physical layer of 1Gb/s or larger message transmission rate, and LRP layer is to supportThe physical layer of the message transmission rate of several Mb/s. HRP layer is high directionality, and is usedControl in the synchronous data flow connecting by clean culture, asynchronous data, MAC order and A/VThe transmission of data. LRP layer is supported orientation or omnidirectional mode, and for by clean culture orPerson broadcast and the transmission of the beacon that carries out, asynchronous data, MAC order. Telegon 21 canUse HRP and/or LRP layer to other equipment transmission or from other equipment receiving datas.Other equipment 22 to 25 of WVAN can also transmit with HRP and/or LRP layer orReceive data.

Fig. 4 is the looking of frequency band that is shown in the HRP channel that uses in WVAN and LRP channelFigure. HRP layer uses four letters of the bandwidth of the 2.0GHz in 57 to 66GHz frequency bandRoad, and LRP layer uses three channels of the bandwidth of 92MHz. As shown in Figure 4, HRPChannel and LRP Channel Sharing frequency band, and respectively by TDMA pattern using.

Fig. 5 is the view that is shown in the example of the superframe using in WVAN. With reference to figure 5, everyIndividual superframe comprises: beacon region, and wherein, beacon is transmitted; Reserve area, described reserved areaTerritory is assigned to random device according to the request of equipment by telegon; And reserve area not,Described not reserve area is not assigned with by telegon, but between telegon and equipmentOr pattern transmission and the reception data of basis based on competition between equipment, wherein, Mei GequTerritory is all the time-division. Beacon comprises the timing allocation information in respective superframe, and WVANManagement and control information. Reserve area is used to data from according to the channel time allocation of equipmentAsk and be sent to other equipment by telegon to the equipment of its allocated channel time. By protectingStay region can transmit order, data flow, asynchronous data etc. If by retaining all the other, spyData are sent to other equipment by fixed equipment, uses HRP channel. If reception dataEquipment transmits the ack/nack signal of received data, uses LRP channel. Do not protectStay region can be used to transfer control letter between telegon and equipment or between equipmentBreath, MAC order or asynchronous data. In order to prevent between the equipment in reserve area notData collision, can use the multiple access of carrier wave induction (CSMA) pattern or fluting AlohaPattern. If there is various control information or order to be transmitted, reserve area can be byBe arranged in LRP channel. In each superframe, the length of reserve area and not reserve area andQuantity can change along with each superframe, and can be controlled by telegon.

Fig. 6 is the view that is shown in another example of the superframe using in WVAN. With reference to figure 6,Each superframe comprises: beacon field 30, wherein transmits beacon; Retain channel time blocks32; And do not retain channel time blocks 31. Each channel time blocks (CTB) by time be divided into HRPRegion and LRP region, wherein, transmit data to HRP region by HRP layer, and logicalCross LRP layer and transmit data to LRP region. Transmit termly beacon by telegon, to identifyThe beginning of each superframe, and beacon 30 comprises management and the control information of WVAN,And the timing information of scheduling. Equipment can by the timing information that comprises at beacon and management/Control information carrys out swap data in network.

In HRP region, the CTB field of reservation can for by data from according to equipmentChannel time allocation request and be sent to other to the equipment of its allocated channel time by telegonEquipment. If specific equipment comes to other equipment transmission datas by the CTB field retaining,Use HRP channel. If the equipment of reception data transmits received dataAck/nack signal, uses LRP channel.

Do not retain CTB field can be used to communicating control information, MAC order orAsynchronous data between telegon and equipment or between equipment. In order to prevent not retainingData collision between equipment in CTB field, can use the multiple access of carrier wave induction(CSMA) pattern or fluting Aloha pattern. If there is various control information to be transmittedOr order, can be arranged on reserve area in LRP channel. In each superframe, protectLength and the quantity staying CTB field and do not retain CTB field can become along with each superframeChange, and can be controlled by telegon.

In addition,, although do not illustrate in Fig. 6, each superframe comprises position and beacon neighbourThe near control time (CBCP) based on competition, to transmit urgent control/administrative messag. CBCPLength can be set to be no more than given threshold value mMAXCBCPLen.

Fig. 7 is the view that is shown in the protocol layer architecture realizing in the equipment of WVAN.

With reference to figure 7, the communication module of the each equipment comprising at WVAN can be according to its meritCan and comprise four layers. Usually, communication module comprise adaptive sublayer 40, MAC layer 41,PHY layer 42 and station administration entity (SME) layer 43. In this kind of situation, station be forThe equipment of identification telegon, and station administration entity (SME) means equipment management entity (DME).Station administration entity (SME) is the layer independent community that controls lower floor, and establishes from each layer of collectionStandby status information. Station administration entity SME comprises the entity of each layer of supervisory communications module.In this kind of situation, the entity of managing MAC layer will be called as MAC layer management entity(MLME), and management adaptation layer entity will be called as adaptation layer management entity (ALME).

Adaptive sublayer 40 comprises AVC agreement 400 and A/V burster 410. AVC agreement 400Actuating equipment control and for the A/V transfer of data between transfer equipment and receiving equipmentStream send the upper strata of connection. A/V burster 410 is by A/V providing data formatting, for HRP numberAccording to service.

MAC layer 41 is for link setting, connection or disconnected and for transmission of materialsThe channel access of the lower floor of agreement, and for reliable transfer of data. In other words, MACLayer is 41 for transfer control/data-message, or for control channel.

PHY layer 42 is directly processed A/V data, or A/V data can be passed through PHY simultaneouslyLayer 42 or MAC layer 31 are processed. PHY layer is responsible for from such as adaptation layer 30 and MACThe task that the message of the upper strata request of layer 41 transforms, makes message can pass through PHY layerAnd between equipment, carry out sending and receiving. And PHY layer comprises the physical layer of above-mentioned two kinds,, HRP layer 420 and LRP layer 421.

The layer of equipment provides service, such as high rate services, Low rate services and management clothesBusiness. High rate services is used to video, audio frequency and transfer of data. And Low rate services quiltBe used for the transmission of the asynchronous data of voice data, MAC order and low capacity. AccordinglyBetween layer, before the processing of executing data exchange, corresponding layer mutually transmits and receives and simply disappearsBreath. The message exchanging between such different layers is called as primitive.

In order to carry out radio communication between the equipment in wireless network, random device should be dividedIs furnished with the channel resource from telegon. If receive the use from random device to other equipmentIn the channel assignment request that transmits A/V data, telegon execution channel search process is used for searchingRigging has the channel of least interference. If channel resource can be used, telegon divides to request channelsThe devices allocation channel resource of joining, and equipment from from telegon to its allocation of channel resources canThe channel resource that use distributes is to other equipment transmission datas of wireless network.

Fig. 8 is shown in wireless network, from telegon to random device allocation of channel resourcesThe flow chart of the example of process.

With reference to figure 8, equipment sends channel resource request message (bandwidth response command) to associationAdjust device, make Xiang Qifen be used in the channel resource (S10) of transfer of data. Receive letterWhether the telegon search of road resource request message there is the available channel resources of the equipment of distributing to(S11). As a result, if there is available channel resources, telegon is by response message (bandwidthResponse command) send equipment to, wherein, response message indicate the channel resource of asking pointJoin (S12). Telegon comes by beacon will be by the most newly assigned channel resource to equipment transmissionType or the information (S13) of scope. Now, other equipment that belong to WVAN by fromThe beacon of telegon broadcast receives the letter of the distribution of the channel resource of instruction from telegon to equipmentBreath.

In the time that device request telegon carrys out allocation of channel resources, equipment can pass through at channel resourceIn request message, the scheduling type of assignment of allocation carrys out the distribution of request channels resource. According at superframeThe attribute of the channel time blocks (CTB) comprising, scheduling type can be divided into static schedulingType and dynamic dispatching type. Static scheduling type means to comprise that at least one CTB's is same largeLittle superframe is distributed continuously, for the A/V such as being transmitted continuously in special timeThe transfer of data of data. In this case, comprise the CTB of similar number at each superframe.On the other hand, dynamic dispatching type is for the data such as wave beam search and control message changeInterim transmission. Because each superframe may not have identical size, so for eachThere is not restriction in the number of the CTB that superframe comprises.

In Fig. 8, channel resource request command (bandwidth response command) is used to permission equipmentRequest telegon distributes, changes or stops channel resource, carry out thus with to telegon orThe relevant process of transfer of data of other equipment of person. The grouping of channel resource request command comprises instruction nIndividual bandwidth request item destination field, wherein, one in n bandwidth request project comprises as table 1Shown in data format.

Table 1

Reference table 1, channel resource request items field comprises: TargID field, its instruction pleaseAsk the ID of the equipment of the distribution of channel resource; Stream request id field, the request of its indicating equipment disappearsThe type of breath; Stream index field, the stream index that its instruction distributes by telegon; Instruction is oneThe minimum number destination field of the time block of the channel resource that individual superframe comprises; Indicating channel resourceThe maximum number destination field of time block; Time block duration field, it indicates each channelThe duration of resource; Minimum scheduling slot field, it indicates minimum scheduling slot; MaximumScheduling slot field, it indicates maximum scheduling slot; And Request Control field, it comprisesThe solicited message of channel resource.

Stream index field instruction is by the stream index of telegon assignment. According to the number transmitting from equipmentAccording to or type of service, each stream that telegon is WVAN distributes unique stream index. For example,If device request synchronously flows, stream index field is set to the stream index of not assignment. EstablishingStandby is being in the reservation of asynchronous flow request channels resource or the situation of termination, stream index fieldBe set to the value for transmitting asynchronous flow.

The minimum number destination field of the time block of indicating channel resource device request channel resource withTransmit in the situation of synchrodata, (for example, be illustrated in the channel resource of asking in a superframeChannel time blocks) minimal amount; And its device request channel resource with transmit asynchronous dataSituation under, be illustrated in all numbers of the channel resource that a superframe comprises. Indicating channelThe maximum number destination field of the time block of resource device request channel resource with transmit synchrodataSituation under, represent the maximum number from the channel resource of device request; And believe in device requestRoad resource is to transmit in the situation of asynchronous data, and described field is preserved for the biography of other dataDefeated.

Time block duration field represents adjusting when the multiple channel resource blocks that comprise in schedulingIt in degree, is the time of consecutive hours.

Minimum scheduling slot field represents when two channel resource blocks are assigned with continuously, from ought theThe period of the time that one channel resource block starts to the time starting when second channel Resource BlockLittle value.

Maximum scheduling slot field represents when two channel resource blocks are assigned with continuously, from ought theThe period of the time that one channel resource block starts to the time starting when second channel Resource BlockLarge value. On the other hand, if device request is used for the channel resource of asynchronous data, maximum tuneSpend period field and represent the time in the time that the first channel resource block distributing starts in superframe.

Request Control field is assigned scheduling type and the physics of the channel resource distributing by telegonThe type of layer. For example,, if 1 bit is allocated for instruction scheduling type, static schedulingType is set to 1, and dynamic dispatching type is set to 0.

As mentioned above, equipment can ask telegon with the type by assign channel resources, timeBetween etc., carry out allocation of channel resources by channel resource request command.

Received channel resource request command telegon can whether in search, exist will quiltAfter distributing to the available channel of equipment, to the order of equipment transfer channel resource response, (bandwidth is rungShould order). Channel resource response command comprises n channel response project (bandwidth response project),Itself and response phase to the n comprising at channel resource request command channel resource request itemsCorresponding. In this case, channel resource response item field can comprise as shown in table 2Data format.

Table 2

Eight hytes: 1	1	1
			Stream request ID	Stream index	Reason-code

Reference table 2, the example of channel resource response item field represents to receive from equipment as passed throughStream request ID and stream index that the channel resource request command arriving is assigned. Channel resource response projectField comprises stream request id field, stream index field and resource code field. Reason-codeField is assigned following code, and whether described code instruction telegon divides according to the request of equipmentAllocating channel resource and indicate the reason that telegon why can not allocation of channel resources. For example, if, there is available channel resource, reason generation in the result of searching for as the channel resource of telegonCode field can be assigned 0 × 00 code, and its instruction can be carried out channel resource allocation, or asFruit is owing to can not carry out dividing of channel resource when the device request additional channel resource due to transferJoin, can transmit 0 × 02 code, impossible reason that indicating channel resource distributes.

In the time of channel resource to devices allocation certain limit, telegon passes to equipment by beaconSend the assignment information of new channel resource.

Usually, in non-coding state, by omnidirectional low-rate physical data cell(LRPUDU) transmit beacon, and beacon comprises the timing information of scheduling and WVANManagement and control information. Bootstrap information grouping comprise MAC control head, beacon control field,And schedule information element (IE) field, it indicates n schedule information. Usually, IE numberComprise IE index, IE signal length and the field that comprises the information that will be transferred according to form.

Scheduling IE is illustrated in the timing information of the scheduling in next superframe. For example,, at a NThe scheduling IE that beacon comprises represents since the timing information of the superframe of N+1 beacon. AdjustDegree IE comprises n Scheduling Block, and each Scheduling Block comprises: be to the index of the stream of its allocation scheduleFirst of information, scheduling slot, the number of distributing to the channel time blocks of a scheduling, schedulingThe timing information of channel time BOB(beginning of block) and maintain the duration letter of each channel time blocksBreath.

Beacon control field comprises: beacon state field; Superframe timing information, its company of specifying inThe timing information of the transmission intercal between continuous beacon; And several destination fields of instruction superframe.As shown in table 3 being configured of packet of the beacon state field comprising in beacon control field.

Table 3

Bit: 1	1	1	1	1	3
						Free channel time	Configuration change	Scheduling changes	Static scheduling	Take orders	Retain

Reference table 3, the example of beacon state information comprises: free channel time field, it refers toShow according to the information of the existence of the available channel resources of channel resource request; Configuration change field,It is indicated except the field of instruction number of superframes, the channel resource of specifying in current beaconConfiguration whether change; Scheduling changes field, its instruction compared with beacon before,Whether the dispatch channel resource on current superframe changes; Static scheduling field, its instruction is quietWhether state scheduling IE has been included in current beacon; The field that takes orders, it indicates whether to connectBe subject to allocation request of channel resources; And reserved field, other data can be sent to this reservationField.

In table 3, if telegon allocation of channel resources, free channel time can be establishedBe set to 1, and if telegon determines not allocation of channel resources, free channel time can be establishedBe set to 0. If there is no change, can configuration change field be set to 0. Although staticScheduling field can not need to be included in all beacons, to reduce because beacon occursExpense, but static scheduling IE can be included in beacon termly. Equally, ifIn beacon, do not comprise static scheduling IE, static scheduling field can be set to 0. If associationThe channel assignment request of adjusting device refusal equipment, the field that takes orders also can be set to 0.

Form to the equipment of its allocation of channel resources and other equipment by aforesaid processWVAN, and can pass through distributed channel resource and transmit data.

One embodiment of the present of invention relate to the method for following allocation of channel resources, described methodAllow by aforementioned process to the equipment execution of its allocation of channel resources and the two-way of other equipmentLetter. The method of allocation of channel resources is described with reference to Fig. 9 hereinafter.

Fig. 9 illustrates according to an embodiment of the invention, by a part for channel resource fromOne devices allocation is to the flow chart of the example of the process of the second equipment.

Hereinafter, for convenience of description, the letter distributing by the telegon from wireless networkRoad resource will be called as the first equipment to the equipment of other equipment transmission datas, and establish from firstThe standby equipment that receives data will be called as the second equipment.

Be assigned with some channel resource from telegon with reference to figure 9, the first equipment, andSend channel resource to second equipment. The step S10 to S13 of allocation of channel resources and Fig. 8In those steps identical.

The first equipment transmits A/V data by the channel resource distributing from telegon to the second equipment(S14). A/V data mean the target data for the transmission between equipment, and comprise soundAt least one in audio data and video data. But, from the first equipment to the second equipment transmissionData be not limited to A/V data. From the second equipment of the first equipment receiving data to the first equipmentTransmit the ack/nack signal (S15) of received data. Ack signal means from connecingThe ack signal that receiving unit transmits to transfer equipment, to indicate the letter transmitting from transfer equipmentNumber normally received. If receive ack signal, transfer equipment can transmit downData. On the other hand, NACK signal means to transmit from receiving equipment to transfer equipmentNack signal, with indicate due to dropout or the wrong signal that causes not normalReceived. If receive NACK signal, transfer equipment should data retransmission. , existIn Fig. 9, ack/nack signal is whether instruction is normal from the data of the first equipment transmissionThe confirmation signal that ground receives in the second equipment.

Step S14 and S15 are repeated, and then, if the second device intends is established to firstThe standby A/V data that transmit, the second equipment is to the first equipment transfer channel resource request information, withFirst equipment of asking distributes (S16) to a part for the channel resource distributing from telegon.For example, in the time that cell phone transmits the data such as the larger capacity of music file to server,Video is talked to be needed, and some channel resource should be assigned to server, to make it possible toCarrying out jumbo transfer of data and video talks. According to one embodiment of present invention, secondEquipment can ask the first equipment instead of telegon to carry out allocation of channel resources.

The the first equipment execution that has received channel resource solicited message determines to divide from telegonA part for the channel resource of joining is distributed to the process (S16) of the second equipment. In this step,If the first equipment determines the part to the second devices allocation channel resource, the first equipment is logicalA part of crossing the channel resource distributing from telegon transmits A/V data (S17) to the second equipment.The second equipment transmits ack/nack signal to the first equipment, and whether its instruction A/V dataNormally receive (S18) from the first equipment. The second equipment is by the channel from the first devices allocationResource is transmitted A/V data (S19) to the first equipment.

Therefore, according to one embodiment of present invention, if the first equipment divides according to channel resourceJoin request, a part for the channel resource distributing to the second devices allocation from telegon, canIn the case of the distribution from the channel resource of telegon not, carry out the first equipment and theTwo-way communication between two equipment.

Figure 10 illustrates according to an embodiment of the invention, and request is to being assigned with from firstThe flow process of the example of the process that the channel resource of the second equipment of the channel resource of equipment changesFigure.

With reference to Figure 10, by the channel resource from the first devices allocation to the second equipment, to firstThe step S18 to S20 of equipment transmission data is identical with those steps with reference to figure 9.

As mentioned above, if the first equipment is according to the request of the second equipment, to the second devices allocationA part for the channel resource distributing from telegon, the second equipment is to the first equipment transfer channelResource changing solicited message, wherein, channel resource changes solicited message request and changes according to being passedDeliver to the attribute of A/V data of the first equipment and the channel resource (S21) that distributes. Channel resourceChange the channel resource that the solicited message request of being used to increases or reduces to be assigned with. For example, asFruit the second equipment only uses from the channel resource of the first devices allocation has failed transfer of data, orIf person needs continuous transfer of data as video data, may further need channelResource. Therefore, the second equipment first equipment of can asking increases channel resource. On the contrary, secondEquipment first equipment of can asking reduces channel resource.

The first equipment that has received channel resource change solicited message determines whether accept secondThe request (S22) of equipment. If the first equipment determines to accept the request of the second equipment, firstEquipment changes solicited message according to channel resource, by the channel resource having changed, establishes to secondThe standby A/V data (S23) that transmit. Then, the second equipment transmits the number receiving from the first equipmentAccording to ack/nack signal (S24), and by having changed from the first devices allocationChannel resource, to the first equipment transmission data (S25). For example,, if the second device requestOne equipment increases bandwidth range, and the first equipment accepted the request of the second equipment, and firstEquipment can be established more channel resource allocation by the channel resource that reduces it to secondStandby.

Figure 11 illustrates according to an embodiment of the invention, to its transfer channel resource request letterThe view of the example of the packet of breath.

In the foregoing embodiments, can use from the second equipment to the first equipment transmissionAck/nack signal transmits the channel resource request letter transmitting to the first equipment from the second equipmentBreath, with the distribution of request channels resource. Channel resource solicited message is not only to pass throughAck/nack signal transmits, but can transmit by other signal.

Usually, the first equipment that belongs to wireless network is by the guarantor from the superframe shown in Fig. 5The data of the section of writeeing down characters are sent to the second equipment by HRP channel. According to an enforcement of the present inventionExample, the second equipment also can transmit ack/nack signal, and HRP channel is passed through in its instruction,The confirmation of the data that receive from equipment. If transmitted by HRP channelAck/nack signal, can transmit this signal with HRPACK packet type, as Fig. 1Shown in. But ack/nack signal does not only transmit by HRP channel, butCan transmit by LRP channel.

With reference to Figure 11, if the second equipment passes through HRP channel to the first equipment transmissionAck/nack signal, HRPACK grouping comprises that MAC controls header fields 50 and HRPACK header fields 51. Channel resource solicited message can be by according to an embodiment of the inventionBe included in HRPACK header fields 51. HRPACK header fields 51 comprises: HRPACKRequest field 511, physical channel is passed through in its instruction, that is, in HRP channel and LRP channelWhich transmits ack/nack signal; ACK bitmap field 512, it indicates the second equipmentWhether normally receive each in seven subgroups that is to the maximum that forms grouping main body;Poll field 513, its second equipment of indicating whether can usage data grouping instead of ACK divideGroup responds the first equipment to confirm reception; Data field 514 co-pending, its instruction will be established from secondThe existence of the standby data that are sent to the first equipment; And reserved field 517, if additionally transmittedWhen data, can use reserved field 517.

The example of channel resource solicited message according to an embodiment of the invention can be by protectingA part for the section of writeeing down characters transmits. HRPACK head can comprise: time request (TR)Field 515, can carry the information of the distribution of request channels resource therein; And/or the time changesBecome (TC) field 516, its request changes the channel resource distributing. , reserved field 517A part can up-to-dately be defined as TR field and/or TC field. From the second equipment toIn the situation of one devices allocation channel resource, TC field 516 comprises channel resource and changes request letterBreath, it is for asking to increase or reduce distributed channel resource. Therefore, with TR field notWith, TC field is not always defined within a part for HRPACK head. In other words, HRPACK head can only comprise TR field 515, or can comprise TR field 515 HesTC field 516. If TC field is not included in HRPACK head, TC wordSection can be assigned with as reserved field.

With reference to the example shown in Figure 11,2 bits can be distributed to respectively to TR field 515With TC field 516. If 2 bits are distributed to respectively to TR field and TC field,In field respectively realize channel time request signal and channel time change signal example asShown in table 4.

Table 4

Data format	Time request (TR) data	Time changes (TC) data
			00	Ask without the time	Change without the time
01	Time unconfinement data	Time increases
			10	Time-constrain data	Time reduces
11	Retain	Retain

Reference table 4, if the data-signal in TR field request allocation of channel resources is " 00 ",Data-signal 00 represents not have the state of requesting channel time allocation. If data-signal is" 01 ", it is corresponding to the data that do not transmitted continuously of data that will transmit from the second equipmentSituation, and it represents the channel resource request for the transfer of data without time-constrain. IfData-signal is " 10 ", and it represents the data for the time-constrain of basis such as vision signalThe channel resource request of transmission. If data-signal is " 11 ", whether it represents TR fieldBe retained.

When the first equipment is according to the channel resource request of the second equipment, by the letter distributing from telegonWhen a part for road resource is distributed to the second equipment, the TC field that request changes channel resource is footNo more. In other words, at the first equipment, a part for the channel resource distributing from telegon is distributedGive under the state of the second equipment, if the data-signal of TC field is " 00 ", it represents theTwo device request the first equipment maintain the channel resource period from the first devices allocation. If dataSignal is " 01 ", and it represents that second device request the first equipment increases the channel resource distributing.If data-signal is " 10 ", it represents that second device request the first equipment reduces distributedChannel resource. If data-signal is " 11 ", it represents that TC field is retained, as TRField is the same.

The number of distributing to the bit of TR field and TC field is not limited to aforesaid embodiment, andAnd can obtain in every way. According to another embodiment of the present invention, if by 1 bitDistribute to TR field and 2 bits are distributed to TC field, the data in TC fieldSignal is as shown in table 1 to be configured. The in the situation that of TR field, if data-signal is " 0 ",Its expression does not have the distribution of request channels resource. If data-signal is " 1 ", its expressionAsk the distribution of channel resource. According to still another embodiment of the invention, if by 1 bitDistribute to respectively TR field and TC field, if data-signal is " 0 ", it represents notThere are the request distribution of channel resource or the change of channel resource. And, if data-signal is" 1 ", the distribution of channel resource or the change of channel resource have been asked in its expression.

As mentioned above, receive particular channel resource request information and/or letter from the second equipmentThe first equipment of road resource changing solicited message does not need to receive solicited message and/or channel moneySource changes solicited message. Whether the first equipment can determine the step S17 of allocation of channel resourcesOr determine whether change in the step S22 of distributed channel resource, based at the first equipmentAnd the importance of the second data that transmit between equipment decides the request of second equipment of acceptance.

The priority of the data transmission that for example, the first equipment can be based in deciding stepOrder decides the request of response the second equipment.

The first equipment can be asked a part for the second devices allocation channel resource. The first equipment canWith the distribution of request channels resource, and/or use the A/V data that receive from the second equipmentAck/nack signal asks to change the channel resource distributing. , TR field and/or TCField can be included in HRPACK head.

For example, suppose that the first equipment and the second equipment distributes to TR field by 2 bits respectivelyWith TC field, and data-signal is as shown in table 4 is defined. In this case, ifData-signal in the TR field of the first equipment and the second equipment is " 01 ", and it represents firstEquipment and the second equipment are all asked the distribution without the channel resource of time-constrain, and have identicalTransmission sequence. And, if the letter of the data in the TR field of the first equipment and the second equipmentNumber be " 10 ", it represents that the first equipment and the second equipment all asks to have the channel of time-constrainThe distribution of resource, and there is identical transmission sequence. Therefore, should determine whether accept thisThe equipment of request can carry out allocation of channel resources randomly based on other standards. If established firstData-signal in standby TR field is " 10 ", and number in the TR of the second equipment fieldThe number of it is believed that is " 01 ", because the data that will transmit from the first equipment have time-constrain, soAspect transmission, the first equipment is before the second equipment. Therefore, the first equipment can refuseThe allocation request of channel resources of two equipment.

On the other hand, the data-signal in the TR of the first equipment field is " 01 ", andData-signal in the TR field of two equipment is in the situation of " 10 ", due to will be from the second equipmentThe data that transmit have time-constrain, and, aspect transmission, the second equipment is before the first equipment.Therefore,, by accepting the allocation request of channel resources of the second equipment, the first equipment can be to secondA part for the channel resource that devices allocation is distributed from telegon. Now, the second equipment can be toThe first equipment transfer channel resource changing signal, wherein, channel resource changes request signal and increasesOr reduce distributed channel resource.

Hereinafter, Figure 12 and Figure 13 are intended to describe according to the letter of previous embodiment of the present inventionThe type that road resource is distributed.

Figure 12 illustrates according to an embodiment of the invention, according to channel resource request at equipmentBetween the view of example of the channel resource allocation of carrying out.

With reference to Figure 12, if the first equipment uses the channel money of certain scope of distributing from telegonSource, transmits A/V data by HRP channel to the second equipment, and the second equipment uses HRPChannel transmits the ack/nack signal of received A/V data to the first equipment. Interval" A " is the channel resource that the second equipment is not asked, and the TR word of HRPACK signalSegment data signal represents by " 00 ". Receive the second equipment of data to the first equipment transmissionThe TR field data signal with " 10 " as second scheduling of interval " A "Ack signal, with request channels resource. Then, the first equipment is by its all channel resourceA part transmit A/V data, and channel money by except being assigned to the second equipmentOther parts outside source are come to receive A/V data and ack/nack signal from the second equipment.

Receive the second equipment transfer channel resource changing solicited message of channel resource, itsRequest increases or reduces distributed channel resource, and wherein, channel resource changes solicited messageBe included in the TC field of HRPACK head. If the data-signal of TC field asFirst scheduling at same interval " B " is equally " 00 ", and the first equipment can maintain according to requestThe solicited message of distributing to the channel resource of the second equipment maintains the current channel money of sharing typeSource. In this case, the first equipment can ask the second equipment to establish being assigned to secondThe channel resource of standby its is redistributed.

In Figure 12, as mentioned above, beacon is termly from the first equipment by LRP channelBe sent to the signal of the second equipment, to identify the beginning of each superframe. By for nextThe beacon of individual scheduling, the second equipment receives from the information of the channel resource of the first devices allocation. ExampleAs, the first equipment can be by beacon by relevant to the number of the CTB comprising in each schedulingInformation, when starting the opening when data are sent to the second equipment from the first equipment by CTBMoving time, the first equipment use CTB duration or can for by data from secondThe duration that equipment is sent to the CTB of the first equipment is transferred to the second equipment. At interval " A "In, between equipment, there is no shared channel resources, and the scheduling tool that " A " comprises at intervalThere is identical type. In interval " B ", shared channel resources between equipment, andThe scheduling comprising every " B " also has identical type.

Next, Figure 13 illustrates according to an embodiment of the invention, when the second device requestWhen the first equipment changes channel resource, the view of shared channel resource between two equipment.

If give the second equipment by channel resource from the first devices allocation, the second equipment can rootIncrease or reduce channel resource according to the A/V data of wanting to transmit first equipment of asking.

With reference to Figure 13, when the first equipment distributes a part for the channel resource distributing from telegonWhen second equipment of giving, it sends A/V data to second equipment by other channel resources,And passing through distributed channel resource to receive A/V data from the second equipment. Then, secondEquipment can be asked with the ack/nack signal of the A/V data that receive from the first equipmentThe first equipment increases or reduces distributed channel resource. For example,, if the second device requestThe first equipment increases the distribution of channel resource, and in TC field, is " 01 " by being included inThe HRPACK signal of data-signal is sent to the first equipment, and the first equipment acceptance second is establishedStandby request, described the first equipment reduces the channel resource for next A/V transfer of data,And give the second equipment by other channel resource allocation. In other words, the channel of the second equipment moneyThe usable range in source has increased the decrease of the channel resource that first equipment uses. In Figure 13,Interval " C " represents that the second equipment increases request according to the channel resource of the second equipment and passes through a certainMore channel resource in the channel resource of scope transmits data. If the second device requestThe first equipment reduces channel resource, and it is by the letter of the data for " 10 " being included in TC fieldNumber ack/nack signal be sent to the first equipment. If the first equipment is accepted the second equipmentRequest, controls the distribution of channel resource, has realized thus interval " D ". If theTwo equipment are intended to maintain the amount of current channel resource, as interval " E ", and TC fieldData-signal should be set to " 00 ".

As mentioned above, according to one embodiment of present invention, by determining clearly whether respondRequest in the second equipment carrys out allocation of channel resources, to receive a certain channel from telegonThe first equipment of resource is to the such mode of the second devices allocation channel resource, at the first equipment andShared channel resources between the second equipment. If the first equipment is accepted the request of the second equipment,It only comes to transmit A/V number to the second equipment by a part for the channel resource from telegon distributionAccording to. If the first equipment is refused the request of the second equipment, it is not transmitting the response of separationIn the situation of message, come to transmit A/V number to the second equipment by the channel resource of all distributionAccording to.

According to another embodiment of the invention, for allocation of channel resources with change and distributeChannel resource, by determining whether accept request, the equipment that has received request signal is toTransmit independent particular message through having transmitted the equipment of request signal.

Figure 14 illustrates in accordance with another embodiment of the present invention, the process of allocation of channel resourcesThe flow chart of example. According to another embodiment of the invention, the process bag of allocation of channel resourcesDraw together according to the allocation request of channel resources of the second equipment, by signal channel resource allocation information or channelResource changing information sends the process of the second equipment clearly to from the first equipment.

With reference to Figure 14, because the channel resource by distributing from telegon is from the first equipment to secondEquipment transmission data and from the step S30 of the second equipment receive channel resource allocation request information extremelyS36 is identical with step S10 to S16 in Fig. 9, so by the description of omitting it.

Whether the first equipment that has received channel resource solicited message from the second equipment determines toChannel resource allocation is given the second equipment (S37). If the first equipment determines channel resource allocationSecond equipment of giving, it sends signal channel resource allocation information to second equipment, wherein, described inSignal channel resource allocation information indicates whether a part (S38) for allocation of channel resources. If firstEquipment refusal allocation request of channel resources, it is in step S38, and will refuse channel resource pleaseThe signal channel resource allocation information of asking sends the second equipment to. , be different from reference to figure 9 and describeChannel resource allocation, the first equipment indicates whether channel resource allocation to establish to second clearlyStandby. Now, as described below, the signal channel resource allocation information that sends the second equipment to is included inIn MAC head.

Determine that the first equipment that a part for channel resource is distributed passes through from telegonA part for the channel resource distributing is transmitted A/V data (S39) to the second equipment. Second establishesFor sending the ack/nack signal of the A/V data that receive from the first equipment to first equipment(S40), and by the channel resource from the first devices allocation send A/V data to firstEquipment (S41).

Figure 15 illustrates in accordance with another embodiment of the present invention, the process of allocation of channel resourcesThe flow chart of another example. Figure 15 illustrates the example of the method for allocation of channel resources, wherein,The second equipment is increased or reduced channel resource by first equipment of asking to be controlled from the first equipmentThe scope of the channel resource distributing.

With reference to Figure 15, will distribute from telegon according to the allocation request of channel resources of the second equipmentStep S39 to S41 and the ginseng of a part for channel resource from the first devices allocation to the second equipmentThe step of examining Figure 14 description is identical.

As mentioned above, in the case of a part for channel resource is distributed, the second equipmentFirst equipment of asking increases or reduces to distribute to the channel resource (S42) of the first equipment. ?Receive from the second equipment the first equipment that channel resource changes request signal and determine whether to accept theThe request (S43) of two equipment. If the first equipment determines to accept or refuse this change request,It sends channel resource change information to second equipment, to indicate such determination result(S44). If in step S43, the first equipment is accepted the request of channel resource changing, itsIncrease or reduce to distribute to the channel resource of the second equipment, and by distributing from telegonAll channel resources in the middle of other except distributing to the channel resource of the second equipmentPart sends A/V data to the second equipment (S44). Then, the second equipment transmits from theThe ack/nack signal (S45) of the data that one equipment receives and pass through distributed letterRoad resource by A/V transfer of data to the first equipment (S46).

As mentioned above, according to another embodiment of the present invention, by determining whether accept channel moneySource request signal and channel resource change signal and the decision information of the distribution of channel resource are passedGive the second equipment that has transmitted request signal and changed signal, received channel moneyWhether the first equipment of source request signal and channel resource change signal conclusivelys show it and connectsBe subject to the request of the second equipment.

As described below with reference to table 5 and Figure 16, signal channel resource allocation information can be includedIn reserved field in the grouping control field of MAC control head data format. Channel resourceThe example of the transformat of assignment information includes, but are not limited to, and MAC controls header data latticeFormula.

Table 5 illustrates the example of the data format of MAC control head.

Table 5

Eight hytes: 3	1	1	1	1	1
						Grouping is controlled	SrcID	DestID	WVANID	Stream index	Retain

In wireless network, MAC controls head and comprises: SrcID field, A/V is wanted in its settingThe STID of the first equipment of data; DestID field, it arranges second of reception A/V data and establishesStandby STID; WVNID field, its identification comprises the WVAN of equipment; Stream index field;And reserved field. According to another embodiment of the invention, send second to from the first equipmentThe signal channel resource allocation information of equipment can be included in the grouping control field of table 5, concreteGround, in the reserved field of Figure 16.

Figure 16 illustrates in accordance with another embodiment of the present invention, distributes to its transfer channel resourceInformation and channel resource change the view of the example of the packet of information.

With reference to Figure 16, grouping control field comprises: protocol version field 60, its instruction is used forThe correction of the agreement of the grouping that MAC control head comprises; Packet class field 61, its instructionPacket type; MAC control field 62, its data format according to packet class field is controlledMAC message; And reserved field 65. Change at signal channel resource allocation information and/or channel resourceIn the situation that change information transmits according to embodiments of the invention, a part for reserved fieldBe defined as time request and confirm (TRC) field 63, it comprises signal channel resource allocation information.And other parts of reserved field time that can be defined as changes confirms (TCC) field,It comprises that channel resource changes information.

With reference to Figure 16, if 1 bit is distributed to respectively to TRC field and TCC field,Signal channel resource allocation information and channel resource change information and can use " 0 " or " 1 " to passSend. For example, if the data corresponding with TRC field and TCC field are " 0 ", it canRefuse the request of the second equipment to represent the first equipment. If with TRC field and TCC fieldCorresponding data are " 1 ", and it can represent the request by accepting the second equipment, firstEquipment increases or reduces the range of distribution of channel resource.

The bit corresponding with TRC field and TCC field is not limited to shown in Figure 16. FirstEquipment can be distributed to the bit of each field or be passed through more bit to distribute by changeTransmit more detailed channel allocation information to the second equipment to each field. Again for example, suppose2 bits are distributed to TCC field. In this case, if the data of TCC field be" 00 ", it represents that refusal channel resource changes request. And, if the data of TCC field" 01 ", its represent the first equipment will ask to increase according to the increase of channel resource channel moneySource. In addition,, if the data of TCC field are " 10 ", it represents that the first equipment will be according to letterThe request that reduces of road resource reduces channel resource. Finally, if the data of TCC field be" 11 ", it represents that the first equipment will retain request.

In other words, by TRF field and the more data bit of TCC field distribution,One equipment can will comprise such as the type of channel resource or the channel resource information of range of distributionSignal channel resource allocation information or channel resource change communication to the second equipment.

Figure 17 and Figure 18 illustrate in accordance with another embodiment of the present invention, at the first equipment andThe view of the type of the channel timing distributing between the second equipment. Hereinafter, will be based on by 1Bit is distributed to respectively TRC field and TCC field, and 2 bits are distributed to respectively to TR wordThe example of section and TC field is described data transmission and the reception according to channel resource allocation.

With reference to Figure 17, the first equipment sends the A/V data that comprise MAC head to second and establishesStandby. Now, the TRC field comprising at MAC head and the primary data quilt of TCC fieldBe set to " 0 ". The second equipment that has received A/V data transmits ACK letter to the first equipmentNumber, wherein, ack signal comprises MAC head part and HRPACK packet partial. According toOne embodiment of the present of invention, MAC head part comprises: TRC field, it has channel moneySource assignment information; And/or TCC field, it has channel resource and changes information. HRPACKGrouping comprises: TR field, and it has aforesaid channel resource solicited message; And/or TC field,It has channel resource and changes solicited message.

If a part for second device request the first devices allocation channel resource, the first equipmentCan be set to " 01 " and by TC by the data of the TR field in HRPACK groupingThe data of field are set to " 00 " and transmit data. If suitable according to the priority of transmission dataOrder, the first equipment is intended to refuse channel resource solicited message, and it will be by sending second toThe data of the TRC field of the MAC head in the A/V data of equipment are set to " 0 " by numberReportedly give the second equipment. Now, owing to not having from the first equipment to the second devices allocation channelResource, so the data of TCC field are set to " 0 " (interval " A ").

On the other hand, if the first equipment is accepted channel time request (the TR field of the second equipmentData are " 10 "), the data of TRC field are set to " 1 ". Due to for channel resourceInterval change according to channel resource allocation, so the data of TCC field are set to " 1 "(interval " B "). Therefore, the first equipment use from telegon distribute bandwidth a part come toThe second equipment transmits A/V data, and the second equipment passes through distributed bandwidth to the first equipmentTransmit A/V data. Under the state of two equipment shared channel resources, if the second equipment willThe data of TC field are set to " 00 ", and transmit ack signal, and channel resource can beBetween equipment, share. Even if in this case, the first equipment second equipment of also can asking existsDistribute in the scope of channel resource of the second equipment, by the A/V receiving from the second equipmentThe ack/nack signal of data is redistributed channel resource,

As mentioned above, pass through MAC head in response to the channel resource solicited message of the second equipmentTransmit clearly response message to the second equipment corresponding with the step 38 of Figure 14. First establishesStandby can be by clearly indicating whether that allocation of channel resources passes channel resource information more accuratelyBe passed to the second equipment.

With reference to Figure 18, share the feelings of the channel resource of a certain scope at the first equipment and the second equipmentUnder condition, if second device request the first equipment changes channel resource, such as increasing or reducingChannel resource, the first equipment can will comprise that channel resource changes the MAC head transmission of informationSecond equipment of giving.

If the second equipment is set to by the data of the TR field of HRPACK grouping" 10 ", and TC field is set to " 01 " and comes to the first equipment transmission data, and theOne device intends maintains the current shared state of channel resource, and it can be refused channel resource and changesChange information. In this case, the first equipment can pass through the TRC field of MAC headData be set to " 1 ", and the data of TCC field are set to " 0 " (interval " C "),Come to the second equipment transmission data. On the other hand, if the first equipment is accepted the letter of the second equipmentRoad resource changing request, the data of the data of TRC field and TCC field are set to " 1 ",And then send it to the second equipment, wherein, data are included in MAC header data(interval " D ").

As mentioned above, change solicited message in response to the channel resource of the second equipment and pass through MACIt is corresponding with the step S44 of Figure 15 that head transmits response message clearly to the second equipment.

The equipment of wireless network can be by the processing of describing is subsequently play to A/V data, itsIn, by antenna from broadcasting station or cable, satellite input A/V data. And, work as equipmentWhile serving as source device on wireless network or transfer equipment, it can be remotely to the stay of two nights (sink)At least one in equipment or receiving equipment transmits received A/V data. In the present inventionPrevious embodiment in, transmit the source device of data or transfer equipment corresponding to the first equipment,And the sink device of reception data or receiving equipment are corresponding to the second equipment.

With reference to Figure 19, comprise the broadcast singal of the first equipment according to an embodiment of the inventionSystem comprises the first equipment 70, remote controllers 71, local memory device 72 and for holdingThe network equipment 73 of the radio communication of row and the second equipment 74.

The first equipment 70 comprise receiver module 701, demodulation module 702, decoder module 703,Display module 704, control module 705, channel resource control module 706, graphic process unit 707,Delivery module 708 and control signal communication module 709. In the example of Figure 19, firstEquipment further comprises and direct-connected of the delivery module 708 that comprises input and output portGround memory device 72. But local memory device can be mounted in depositing in the first equipment 70Storage equipment.

Delivery module 708 can communicate with wire/radio network equipment 73, and canBe connected with at least one second equipment 74 by the network equipment 73, wherein, at least oneThe second equipment 74 is present in wireless network. Control signal communication module 709 is according to for example long-rangeThe user control device of controller receives user control signal, and by received signalOutput to control module.

Receiver module 701 can be by earthwave, satellite, cable and internet networkAt least one receive the tuner of the broadcast singal of CF. Can be in broadcast sourceEach provides respectively receiver module 701, described broadcast source be for example ground wave broadcast, cable broadcast,Satellite broadcasting and personal broadcaster. Alternatively, receiver module 701 can be the tuning of unificationDevice. And, suppose that receiver module 701 is the tuners for ground wave broadcast, can distinguishAt least one digital tuner and at least one analog tuner are provided, or can provide numeral/Analog tuner.

In addition, receiver module 701 can receive the Yin Te by transmitting from wired and radio communicationFidonetFido (IP) stream. If receiver module 701 receives IP stream, receiver module 701 canAccording to the source and destination of the grouping of having set up the IP grouping for receiving and transmit from receiverThe IP agreement of information is processed and is transmitted and receive grouping. Receiver module 701 can be according to IP agreementExport the video/audio/data that divides into groups to comprise at received IP and flow, and it canGenerate the MPTS as IP grouping that will be sent to network according to IP agreement, so that it is defeatedGo out. Receiver module 701 is the elements that receive outside incoming video signal, and for example, canReceive IEEE1394 type video/audio signal from outside, or HDMI type stream.

And according to embodiments of the invention, receiver module can be from the second equipment receive channelResource allocation request information, or the channel resource distributing changes solicited message, or can be fromThe second equipment receives A/V data.

Demodulation module 702 is with the order contrary with modulating mode, to defeated by receiver module 701Broadcast singal in the middle of the data that enter carries out demodulation, or to the broadcast letter transmitting from the second equipmentNumber carry out demodulation. Demodulation module 702 transfers to export broadcasting stream by broadcast singal is carried out to solution.If receiver module 701 receives for example stream type signal of IP stream, ignoring demodulation module 702Afterwards, IP stream is output to decoder module 703.

Decoder module 703 comprises audio decoder and Video Decoder, and passes through decoding algorithmThe broadcasting stream of exporting from demodulation module 702 is decoded, and export to display module 704Decoded stream. Now, cut apart the demodulation multiplexer (not shown) of each stream according to respective identifierCan additionally provide at demodulation module 702 and decode between every module 703. Demodulation multiplexer willBroadcast singal is divided into audio element stream (ES) and video elementary stream, and is outputed to solutionEach decoder of code module 703. And, if in a channel multiplexing multiple programs,Demodulation multiplexer is only selected the broadcast singal of the program of being selected by user, and by selected wideBroadcasting signal segmentation is video elementary stream and audio element stream. If data flow or system information flowsBe included in the broadcast singal of demodulation, cut apart by demodulation multiplexer, and thenSend it to corresponding decoding block (not shown).

Display module 704 shows the broadcasted content that receives from receiver module 701 and in this localityThe content of storage in memory device 72. Display module 704 can be according to the control of control module 215System order shows whether instruction memory equipment has been installed in the menu in the first equipment,And the information relevant to the residual capacity of memory device, and display module 704 can usedUnder the control at family, operate.

Control module 705 can be controlled aforementioned modules (receiver module, demodulation module, decoding mouldPiece, display module, graphic process unit, network control module and interface module) operation.And control module 705 shows the menu of the control command that receives user, and drive demonstrationThe application of various information, or for the menu of user's broadcast signal process system.

For example, if local memory device 72 is installed in the first equipment, control module705 can read out in the content of storage in local memory device 72. And, if local storageEquipment 72 is installed in the first equipment, and control module 705 can be controlled local memory device72 operation, makes the broadcasted content receiving from receiver module 701 be stored in local storageIn equipment 72. In addition, control module 705 can be exported control signal, for depositing according to this localityWhether storage equipment 72 is installed in is installed local memory device 72 in the first equipment.

Control module 705 checks the residue memory capacity of local memory device 72, and allows to pass throughGraphic process unit 707 on display module 704 for user shows the information that remains memory capacity.If local memory device 72 remains lack of memory capacity, control module 705 can by thisIn ground memory device 72, the transfer of content of storage is to remote storage device. In this case, controlThe menu that molding piece 705 can show below by display module 704, this menu instruction is at thisIn ground memory device 72, whether the content of storage transfers to another memory device (not shown),Or transfer to remote storage device. And control module 705 can receive and process menuUser control signal. Therefore, control module 705 can allow local memory device 72 HesOther directly or the content of storing in the memory device of Remote Installation shift each other, andAnd be stored in wherein.

In addition, if the solicited message of distributing from receiver module 701 transfer channel resources, controlMolding piece 705 can be by request message transmission to channel resource control module 706, or directly controlChannel resource allocation processed.

Channel resource control module 706 is controlled the distribution of the channel resource from telegonSystem, makes the first equipment 70 send data to the second equipment on WHDI network. ForMake the first equipment send data to second equipment, channel resource should be distributed from telegonFirst equipment of giving. Therefore, channel resource control module 706 can control channel resource, with willThe allocation request of channel resources information that is used for the distribution of request channels resource sends telegon to, orPerson can control the channel resource distributing from telegon.

And, if according to embodiments of the invention, carry out request channels resource from the second equipment 74Distribution, channel resource control module 706 can determine whether channel according to this requestResource is distributed to the second equipment, or controls whether change distributed channel resource. , asThe allocation request of channel resources information that fruit transmits from the second equipment is directly transmitted from receiver module 701,Or transmit by control module 705, channel resource control module 706 can determine beNo allocation of channel resources, and can determine the range of distribution in response to allocation request of channel resources.If the information of the channel resource allocation determining by channel resource control module is transferred to controlModule 705, channel resource allocation is given the second equipment by control module 705, or change dividesThe scope of the channel resource of joining, the data that produced to control.

Channel resource control module 706 can be based on channel resource the determination result of scope determineDetermine usable range and the range of distribution of channel resource, and can pass through delivery module 708, and notCarry out control channel resource by control module 705, to carry out and the two-way communication of the second equipment 74.And, can transmit from the second equipment to control module 705 with channel resource control module 706The 74 allocation request of channel resources information that receive or channel resource change solicited message, andControl module 705 determines it is that acceptance or the such mode of request of refusal the second equipment are controlledChannel resource.

For convenience of description, although control module 705 and network are provided individually in Figure 19Control module 706, but these control modules can be passed through a System on Chip/SoC as shown by dashed linesRealize.

Graphic process unit 707 is processed the figure that will show, makes aobvious by display module 704Display menu screen in the video image showing, and control figure is presented at together with menu screenIn display module 704.

Delivery module 708 can pass at least one second equipment 74 by wired and wireless networkSend data, and can comprise interface module, to carry out the two-way communication between equipment. AsFruit from telegon allocation of channel resources, the first equipment in the scope of distributed channel resource,By delivery module 708 to the second equipment transmission data.

Interface module can be docked with at least one second equipment 74 by wired and wireless network.The example of interface module comprise ethernet module, bluetooth module, short-distance wireless internet module,Portable internet module, the PNA of family module, IEEE1394 module, PLC module, familyFront yard RF module, IrDA module. Meanwhile, delivery module 708 can be defeated to remote storage deviceGo out control signal, wherein, control signal can switch on power. For example,, although do not have in Figure 19Illustrate, but delivery module 708 can by independent remote storage device executive communicationNetwork Interface Module transmit WOL signal and connect the power supply of independent remote storage device.

Term at this can replace with other term. For example, " equipment " can userEquipment (or machine), stand etc. replaces, and " telegon " can be with coordinating (control)Equipment, coordination (or control) are stood, piconet coordinator (PNC) etc. replaces. And,The equipment that the channel resource of a certain scope of distributing from telegon is sent to other equipment can be used" initiator " or " transfer equipment " replaces, and wherein, described " transfer equipment " is phaseFor receiving the equipment of data. Receive the equipment of data can be with " target device " orPerson's " receiving equipment " replaces, and wherein, " receiving equipment " is with respect to the equipment that transmits data.

It will be apparent to those skilled in the art that do not depart from spirit of the present invention andIn the situation of intrinsic propesties, can embody the present invention with other specific forms. Therefore, withUpper embodiment should be considered to illustrative in all fields, instead of restrictive.Scope of the present invention should be determined by the rational explanation to claims, and fallAll changes in equivalency range of the present invention are all included within the scope of the invention.

Claims

1. one kind leads to for the data between the first equipment and the second equipment at wireless networkThe method of letter, described method comprises:

Telegon transmission bandwidth request command to described wireless network is used for described first with requestEquipment is to the distribution of the channel resource of described the second equipment transmission data;

Distributed from the described telegon receive channel resource of described wireless network by described the first equipmentInformation, described signal channel resource allocation information is used to point be used in described the first equipment to describedThe channel resource of two equipment transmission datas; And

Use the described channel resource that distributes from described telegon from described the first equipment to described theTwo equipment transmission datas,

By described the first equipment from described the second equipment receive channel resource request information, described letterRoad resource request information is used to ask described the first equipment and described the second equipment to share described pointA part for the channel resource of joining; And

The channel resource that is determined whether to accept to come from described the second equipment by described the first equipment pleaseAsk,

Wherein, in the time that described the first equipment determines to accept described channel resource request, further bagDraw together:

Use the Part I of described channel resource to pass to described the second equipment from described the first equipmentSend data; And

Use the Part II of described channel resource to be connect from described the second equipment by described the first equipmentReceive data.

2. method according to claim 1, further comprises: by described the first equipment fromDescribed the second equipment receive channel resource changing solicited message, described channel resource changes request letterThe breath request of being used to increases or reduces the scope of the described Part II of described channel resource.

3. method according to claim 2, further comprises: by described the first equipment rootWhether change solicited message according to described channel resource determines to increase or reduces described channel resourceThe scope of described Part II.

4. method according to claim 1, wherein, described channel resource is describedChannel time blocks CTB on the superframe using in wireless network.

5. method according to claim 1, wherein, described channel resource solicited message quiltBe included in the head of the ACK grouping transmitting from described the second equipment in response to the data that receiveIn.

6. telegon from wireless network of a conduct and be assigned with first of channel resourceThe equipment of equipment, described equipment comprises:

Delivery module, described delivery module is to the telegon transmission bandwidth request of described wireless networkOrder with request for described the first equipment to the channel resource of the second equipment transmission data pointJoin, described delivery module uses the described channel resource distributing from described telegon to described secondEquipment transmission data;

Receiver module, described receiver module is from described the second equipment receive channel resource request information;And

Channel resource control module, described channel resource control module please according to described channel resourceAsk information to determine whether sharing with described the second equipment one of channel resource of described distributionPoint,

Wherein, in the time that described channel resource control module determines to accept channel resource request, described inDelivery module uses the Part I of described channel resource to described the second equipment transmission data, andAnd described receiver module uses the Part II of described channel resource to receive number from described the second equipmentAccording to.

7. equipment according to claim 6, wherein, described receiver module is from described secondEquipment receive channel resource changing solicited message, described channel resource changes solicited message and is used toRequest increases or reduces the scope of the described Part II of described channel resource.