CN102342162A

CN102342162A - Method of channel resource allocation and devices in wireless networks

Info

Publication number: CN102342162A
Application number: CN2009801576345A
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: 2012-02-01
Anticipated expiration: 2029-11-13
Also published as: KR20100132409A; KR101663613B1; CN102342162B

Abstract

PURPOSE: A method for allocating channel resources in a wireless network, and a device thereof are provided to efficiently user channel resources between devices by allocating channel resources to first and second devices in a wireless network. CONSTITUTION: Channel resources are allocated from a coordinator. If some of channel resources are decided to be allocated to a second device, a first device transfers A/V(Audio/Video) data to the second device through some of the channel resources(S17). The second device transfers an ACK/NACK signal to the second device(S18). The second device transfers the A/V data through the channel resources allocated from the first device(S19).

Description

Channel resource allocation method in wireless network and equipment

Technical field

The present invention relates to wireless system, and more specifically, relate at the method and apparatus that belongs to allocation of channel resources may between the equipment of wireless network.

Background technology

Recently, developed bluetooth and Wireless Personal Network (WPAN) technology, it forms wireless network in the limited place such as family or small company between fewer relatively purpose digital device, to allow at exchanged between equipment audio frequency or video data.WPAN can be used to the information exchange between fewer relatively purpose digital device near relatively distance, and has realized that the low-power between the digital device communicates by letter with low-cost.The IEEE 802.15.3 (the wireless medium access control (MAC) and physical layer (PHY) standard that are used for a high-rate wireless territory net (WPAN)) that passes through on June 12nd, 2003 has defined the MAC layer of two-forty WPAN and the standard of physical layer (PHY).

Fig. 1 is the overview of the example of the wireless privately owned Access Network of diagram (WPAN).As shown in fig. 1, WVAN is a network configured between such as the personal device in the limited space of family, and through dispose directly allow using under the situation that is not having seamless link at the network of communication between devices between exchange message.With reference to figure 1, WPAN comprises two or more a plurality of subscriber equipmenies 11 to 15, and one of them is as telegon 11.Telegon 11 provides the basic timing of WPAN, and is used to control service quality (QoS) requirement.The example of subscriber equipment comprises computer, PDA, notebook, DTV, video camera, digital camera, printer, Mike, loud speaker, headphone, bar code reader, display and cell phone.All digital devices can be used as subscriber equipment.

WPAN is not designed in advance, but is the self-organizing network (being called hereinafter, " piconet ") that under the situation of the help that does not have central basis instrument, forms as required.With describing the process that forms a piconet in detail.When the random device that can be used as the telegon operation was carried out the function of telegon, piconet started.With before existing piconet is related, perhaps start before the new piconet, all equipment is carried out scanning.Scanning means that equipment is collected and the information of memory channel, and whether search exists existing piconet.The equipment that has been used to start piconet by order from the upper strata and under the piconet that forms before on the accidental channel situation about being associated is not forming new piconet.Select to have the channel of less interference through being based on data that scan period obtains, and come broadcast beacon, the device start piconet through selected channel.In this case, beacon means the information of timing allocation information, other equipment in piconet and the control information of broadcasting through telegon, with control and supervisor micro microgrid.

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

Timing controlled in piconet is carried out based on superframe basically.With reference to figure 2, begin each superframe by means of the beacon that transmits from telegon.The contention access period is used to permission equipment and transmits order, perhaps transmits the asynchronous data based on competition.The channel time allocation period comprises management channel time block (MCTB) and channel time blocks (CTB).MCTB is the period that wherein control information can between telegon and equipment, perhaps transmit between equipment.CTB is that wherein asynchronous data or synchrodata can be between equipment and the telegons or the period of between other equipment, transmitting.For each superframe, confirm number and the position of CAP, MCTB and CTB through telegon, and send it to other equipment in the piconet through beacon.

When the random device in the piconet need be sent to telegon or other equipment with data, device request telegon branch was used in the channel resource of transfer of data, and telegon is given the equipment in the scope of available channel resources with channel resource allocation.If CAP is present in the superframe, and telegon is received in the transfer of data among the CAP, and then equipment can transmit the data of low capacity through CAP, and need be from the telegon allocation of channel resources may.

If the number of the equipment in piconet is less, then because be sufficient, so in the distribution of channel resource, do not have problems from the channel resource of the transfer of data of each equipment.Yet, if owing to the plurality destination device causes the deficiency of channel resource, even perhaps the number of equipment is less; If but specific equipment constantly busy channel transmit large-capacity data; Such as mobile picture, then following problem can appear, promptly; Even other equipment have the data that will transmit, also not to other devices allocation channel resources.Thus, may not executive communication.And, following problem can also take place, that is, be assigned to other equipment less than the channel resource of data capacity.

In aspect this, studied and having no under the situation of problem, be used between equipment, carrying out effectively the whole bag of tricks of two-way communication.

Summary of the invention

Technical problem

Therefore, designed one or more problem that the present invention causes with restriction and the shortcoming that is used for eliminating basically owing to correlation technique.

One object of the present invention be to provide a kind of between the equipment of wireless network the method for allocation of channel resources may effectively.

Another object of the present invention is to allow in the two-way communication between the actuating equipment under the situation that does not receive the telegon interference through be assigned to the channel resource of an equipment to other devices allocation.

Additional advantage of the present invention, purpose and characteristic will be partly after specification in set forth; And part those skilled in the art carries out will becoming obvious after the following inspection to it, perhaps can learn from enforcement of the present invention.The object of the invention and other advantages will realize through the structure that in written description and claim and appended accompanying drawing, particularly points out and obtain.

Technical solution

In order to realize these purposes and other advantages; And according to the object of the invention; As implementing at this and extensively describe ground, according to a first aspect of the invention, a kind of in wireless network from the method for first equipment to the second devices allocation channel resource; Comprise: from telegon receive channel resource allocation information, said signal channel resource allocation information is used to give said first equipment with said channel resource allocation; Through said channel resource to said second equipment transmission data; Receive channel resource request information, said channel resource solicited message are used to ask said first equipment that the part of said channel resource is distributed; And, determine whether the said part of the said channel resource that distributes from said telegon is assigned to said second equipment according to said channel resource solicited message.Said channel resource is channel time blocks (CTB).Said channel resource solicited message is included in HRP (high-rate physical layer) the ACK head.

If the said allocation request of channel resources of decision refusal, then said method further comprises: the entire portion through the said channel resource that distributes from said telegon is sent to said second equipment with data.In this case, said method further comprises: to the said second equipment transfer channel resource allocation information, to refuse said allocation request of channel resources.Said signal channel resource allocation information is included in MAC (medium access control) head.

On the other hand, if said allocation request of channel resources is accepted in decision, then said method further comprises: come to said second equipment transmission data through the part of said channel resource; And come from said second equipment receiving data through other parts except the said part of said channel resource.In this case, said method further comprises: transmit said signal channel resource allocation information to said second equipment, to accept said allocation request of channel resources.Said signal channel resource allocation information is included in the said MAC head.

And said method further comprises: receive channel resource changing solicited message, said channel resource change solicited message and are used to ask to increase or reduce the said channel resource to said second devices allocation.

In this case, said method further comprises: change the scope that solicited message determines whether changing the said channel resource of distributing to said second equipment according to said channel resource.Said channel resource changes solicited message and is included in the said HRPACK head.If the said channel resource of decision refusal changes request; Then said method further comprises: the scope of keeping the said channel resource of distributing to said second equipment; And, change request to refuse said channel resource to the said second equipment transfer channel resource changing information.

On the other hand; If decision changes the scope of the channel resource of second equipment that is assigned to; Then saidly further comprise: change solicited message according to said channel resource, the part of the change scope through said channel resource is come to said second equipment transmission data; And come from said second equipment receiving data through other parts except the said part of the change scope of said channel resource.In this case, said method further comprises: to the said second equipment transfer channel resource changing information, change request to accept said channel resource.Said channel resource change information is included in the said MAC head.

In order to realize these purposes and other advantages; And according to the object of the invention; As implementing at this and extensively describe ground, according to a second aspect of the invention, a kind of method of in wireless network, channel resource being given first equipment from second devices allocation; Comprise: through channel resource from first equipment receiving data, from telegon to the said first devices allocation channel resource; And the transfer channel resource request information, said channel resource solicited message is used to ask said first equipment to come the part to the said channel resource of said first devices allocation.Said channel resource solicited message is included in HRP (high-rate physical layer) the ACK head.

If the gamut through the channel resource that distributes from said telegon comes from said first equipment receiving data, then said method further comprises: to the ack/nack signal of said first equipment transmission data.In this case, said method further comprises: from the said first equipment receive channel resource allocation information, with the refusal allocation request of channel resources.Said signal channel resource allocation information is included in MAC (medium access control) head.

On the other hand; If come from said first equipment receiving data through first channel resource of conduct from the part of the channel resource of said telegon distribution, then said method further comprises: come to said first equipment transmission data through other parts except said first channel resource.In this case, said method further comprises: from the said first equipment receive channel resource allocation information, to accept the channel resource request.Said signal channel resource allocation information is included in the said MAC head.

And said method further comprises: to the said first equipment transfer channel resource changing solicited message, with the channel resource of asking to increase or reduce to be distributed.Said channel resource changes solicited message and is included in the HRP ACK head.

If receive data through said first channel resource from said first equipment, then said method further comprises: come to said first equipment transmission data through other parts except said first channel resource.In this case, said method further comprises: from the said first equipment receive channel resource changing information, change request to refuse said channel resource.Said channel resource change information is included in the said MAC head.

On the other hand, if receive data through the second channel resource from said first equipment, then said method further comprises: come to said first equipment transmission data through other parts except said second channel resource.In this case, said method further comprises: from the said first equipment receive channel resource changing information, change request to accept said channel resource.Said channel resource change information is included in the said MAC head.

In order to realize these purposes and other advantages; And according to the object of the invention; As implementing at this and extensively describe ground, according to a third aspect of the invention we, a kind of conduct from wireless network telegon and be assigned with the equipment of first equipment of channel resource; Said equipment comprises: delivery module, said delivery module through the said channel resource that distributes from said telegon to second equipment transmission data; Receiver module, said receiver module is from the said second equipment receive channel resource allocation request information; And the channel resource control module, said channel resource control module determines whether the part to the said channel resource of said second devices allocation according to said allocation request of channel resources information.

If said allocation request of channel resources is accepted in decision; Then said channel resource control module is come to said second equipment transmission data through the said part of said channel resource, and comes from said second equipment receiving data through other parts except the said part of said channel resource.In this case, said channel resource control module is come to the said second equipment transfer channel resource allocation information, to accept said allocation request of channel resources through said delivery module.

Said receiver module receive channel resource changing solicited message; Said channel resource changes the said channel resource that solicited message is used to ask to increase or reduce to distribute to said second equipment, and whether the decision of said channel resource control module changes the scope of the said channel resource that is assigned to said second equipment.

In this case, if the said channel resource of decision refusal changes request, then said channel resource control module is kept the scope of the said channel resource that is assigned to said second equipment.And said channel resource control module to the said second equipment transfer channel resource changing information, changes request to refuse said channel resource through said delivery module.

On the other hand; If decision changes the scope of the channel resource that is assigned to said second equipment; Then said channel resource control module changes solicited message according to said channel resource; The said part of the said channel resource through changing scope is come to said second equipment transmission data, and comes from said second equipment receiving data through other parts except the said part of said channel resource.In this case, said channel resource control module to the said second equipment transfer channel resource changing information, changes request to accept said channel resource through said delivery module.

Beneficial effect

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

At first, first equipment on wireless network can use channel resource thus effectively to its channel resource of second devices allocation between equipment.

In this case; Because equipment can use the channel resource that is distributed, and need not dispatch or set up channel time, so equipment does not ask telegon to distribute independent channel resource; Thus, can be in the two-way communication between the actuating equipment under the situation that does not have telegon to disturb.

Should be appreciated that the advantage that can obtain through the present invention is not limited to above-mentioned advantage, and from following description, other advantages of not mentioning will be conspicuous for those skilled in the art in the invention.

Description of drawings

Accompanying drawing is included to be provided further understanding of the present invention, and is incorporated among the application and constitutes the application's a part, and accompanying drawing illustrates embodiments of the invention (a plurality of), and is used to explain principle of the present invention with describing.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 that uses in the piconet;

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

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

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

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

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

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

Fig. 9 illustrates according to an embodiment of the invention, the flow chart of the procedural example of allocation of channel resources may between the equipment of wireless network;

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

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

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

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

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

Figure 15 illustrates in accordance with another embodiment of the present invention, the flow chart of the procedural example of the scope of the channel resource that change distributes between the equipment of wireless network;

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

Figure 17 illustrates in accordance with another embodiment of the present invention, the view of the example of the data that transmit and receive through allocation of channel resources may between the equipment of wireless network;

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

Figure 19 illustrates according to an embodiment of the invention, comprises the view of example of broadcast signal process system of the equipment of wireless network.

Embodiment

Hereinafter, will easily understand structure of the present invention, operation and other characteristics through the preferred embodiments of the present invention, the example of preferred embodiment is illustrated in the appended accompanying drawing.The embodiment that below describes is applied to the example as the wireless video LAN (WVAN) of a kind of WPAN with technical characterictic of the present invention.

Fig. 3 is the schematic representation of the example of diagram WVAN.As shown in Figure 1, WVAN comprises two or more users equipment 22 to 25, and one of them serves as telegon 21.Telegon 21 provides the basis timing of WVAN, keeps the track of the equipment that belongs to WVAN, and is used to control service quality (QoS) requirement.Telegon is carried out its function and is used as an equipment that belongs to WVAN simultaneously.Can begin stream with telegon 21 other different equipment 22 to 25 connects.

The WVAN that a difference between the WVAN shown in the WVAN shown in Fig. 3 and Fig. 1 is Fig. 3 supports two kinds of physics (PHY) layer.That is, WVAN supports following physical layer, that is, and and two-forty physics (HRP) layer and low-rate physical (LRP) layer.The HRP layer is to support the perhaps physical layer of bigger message transmission rate of 1Gb/s, and the LRP layer is a physical layer of supporting the message transmission rate of several Mb/s.The HRP layer is a high directionality, and the synchronous data flow, asynchronous data, the MAC that are used to connect through clean culture order and the transmission of A/V control data.The LRP layer is supported directed or omnidirectional mode, and the transmission of the beacon that is used for carrying out through clean culture or broadcasting, asynchronous data, MAC order.Telegon 21 can use HRP and/or other equipment of LRP course to transmit perhaps from other equipment receiving datas.Other equipment 22 to 25 of WVAN can also use HRP and/or LRP layer to transmit or receive data.

Fig. 4 is the view that is shown in the frequency band of the HRP channel that uses among the WVAN and LRP channel.The HRP layer uses four channels of the bandwidth of the 2.0GHz in 57 to 66GHz frequency band, and the LRP layer uses three channels of the bandwidth of 92MHz.As shown in Figure 4, HRP channel and LRP Channel Sharing frequency band, and used by the TDMA pattern respectively.

Fig. 5 is the view that is shown in the example of the superframe that uses among the WVAN.With reference to figure 5, each superframe comprises: beacon region, and wherein, beacon is transmitted; Reserve area, said reserve area is assigned to random device according to the request of equipment through telegon; And reserve area not, said not reserve area is not assigned with through telegon, but between telegon and equipment or between equipment, transmits according to the pattern based on competition and receive data, and wherein, each zone all is the time-division.Beacon comprises the timing allocation information in the respective superframe, and the management of WVAN and control information.Reserve area is used to data from according to the channel time allocation request of equipment and be sent to other equipment through the equipment of telegon to its allocated channel time.Can transmit order, data flow, asynchronous data etc. through reserve area.If through keeping all the other, specific equipment is sent to other equipment with data, then uses the HRP channel.If the equipment that receives data transmits the ack/nack signal of received data, then use the LRP channel.Reserve area can not be used between telegon and equipment, perhaps communicating control information, MAC order or asynchronous data between equipment.In order to prevent the data collision between the equipment in the reserve area not, then can use the multiple access of carrier wave induction (CSMA) pattern or the Aloha pattern of slotting.If have transferred various control information or order, then reserve area can be set in the LRP channel.In each superframe, reserve area and not the length and the quantity of reserve area can change along with each superframe, and can control by telegon.

Fig. 6 is the view that is shown in another example of the superframe that uses among the WVAN.With reference to figure 6, each superframe comprises: beacon field 30, wherein transmit beacon; Keep channel time blocks 32; And do not keep channel time blocks 31.Each channel time blocks (CTB) by the time be divided into HRP zone and LRP zone, wherein, transmit data, and through LRP course LRP zone transmission data through HRP course HRP zone.Transmit beacon termly through telegon, discerning the beginning part of each superframe, and beacon 30 comprises management and the control information of WVAN, and the timing information of scheduling.Equipment can come swap data in network through timing information and the management/control information that in beacon, comprises.

In the HRP zone, the CTB field of reservation can be used for data from according to the channel time allocation request of equipment and be sent to other equipment through the equipment of telegon to its allocated channel time.If specific equipment then uses the HRP channel to other equipment transmission datas through the CTB field that keeps.If the equipment that receives data transmits the ack/nack signal of received data, then use the LRP channel.

Do not keep the CTB field and can be used to communicating control information, MAC order, or the asynchronous data between telegon and equipment or between equipment.In order to prevent the data collision between the equipment in not keeping the CTB field, then can use the multiple access of carrier wave induction (CSMA) pattern or the Aloha pattern of slotting.If have transferred various control information or order, then can reserve area be arranged in the LRP channel.In each superframe, the length and the quantity that keep the CTB field and do not keep the CTB field can change along with each superframe, and can be controlled by telegon.

In addition, though in Fig. 6, do not illustrate, each superframe comprises position and the contiguous control period (CBCP) based on competition of beacon, to transmit urgent control/administrative messag.The length of CBCP 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 that realizes in the equipment of WVAN.

With reference to figure 7, the communication module of each equipment that in WVAN, comprises can comprise four layers according to its function.Usually, communication module comprises adaptive sublayer 40, MAC layer 41, PHY layer 42 and station administration entity (SME) layer 43.Under this kind situation, the station is the equipment that is used to discern telegon, and station administration entity (SME) means equipment management entity (DME).Station administration entity (SME) is the layer independent community of control lower floor, and from the state information of each layer collecting device.Station administration entity SME comprises the entity of each layer of supervisory communications module.Under this kind situation, the entity of managing MAC layer will be called as MAC layer management entity (MLME), and the entity of management adaptation layer will be called as adaptation layer management entity (ALME).

Adaptive sublayer 40 comprises AVC agreement 400 and A/V burster 410.AVC agreement 400 is upper stratas that actuating equipment control and the stream that is used for the A/V transfer of data between transfer equipment and receiving equipment send connection.A/V burster 410 is with the A/V data formatting, to be used for the HRP data, services.

MAC layer 41 is used for the link setting, connect or disconnected and insert for the channel of the lower floor of transmission of materials agreement, and is used for reliable transfer of data.In other words, MAC layer 41 is used for transmitting control/data-message, perhaps is used for control channel.

PHY layer 42 is directly handled the A/V data, and perhaps the A/V data can be handled through PHY layer 42 or MAC layer 31 simultaneously.The PHY layer is responsible for the task of transforming from the message such as the upper strata request of adaptation layer 30 and MAC layer 41, makes message between equipment, to send and to receive through the PHY layer.And the PHY layer comprises above-mentioned two kinds physical layer, that is, and and HRP layer 420 and LRP layer 421.

The layer of equipment provides service, such as high rate services, Low rate services and management service.High rate services is used to video, audio frequency and transfer of data.And Low rate services is used to the transmission of the asynchronous data of voice data, MAC order and low capacity.Before carrying out the processing of exchanges data between the corresponding layer, corresponding layer transmits and receives simple message each other.The message that between such different layers, exchanges is called as primitive.

In order to carry out radio communication between the equipment in wireless network, random device should be assigned with the channel resource from telegon.Transmit the channel assignment request of A/V data if receive being used to from random device to other equipment, then telegon is carried out channel search process and is used to search for the channel with least interference.If channel resource can be used, then telegon is to the devices allocation channel resource of request channel allocation, and can use the channel resource that distributed other equipment transmission datas to wireless network to the equipment of its allocation of channel resources may from telegon.

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

With reference to figure 8, equipment sends channel resource request message (bandwidth response command) to telegon, the feasible channel resource (S10) that is used in transfer of data to its branch.Whether the telegon search that has received the channel resource request message exists the available channel resources (S11) of the equipment of distributing to.As a result, if there is available channel resources, then telegon sends response message (bandwidth response command) to equipment, wherein, and the distribution (S12) of the channel resource that the response message indication is asked.Telegon transmits to equipment through beacon will be by the information of the type of the channel resource of up-to-date distribution or scope (S13).At this moment, other equipment that belong to WVAN receive the information of the distribution of the channel resource of indication from the telegon to equipment through the beacon from telegon broadcasting.

When the device request telegon came allocation of channel resources may, equipment can be asked the distribution of channel resource through the scheduling type of assignment of allocation in the channel resource request message.According to the attribute of the channel time blocks that in superframe, comprises (CTB), scheduling type can be divided into static scheduling type and dynamic dispatching type.The static scheduling type means the onesize superframe that comprises at least one CTB is distributed continuously, be used for such as in special time by the transfer of data of the A/V data that transmit continuously.In this case, the CTB that in each superframe, comprises similar number.On the other hand, dynamic dispatching type is the interim transmission that is used for such as the data of wave beam search and control messages change.Because each superframe possibly not have identical size, so do not have restriction for the number of the CTB that in each superframe, comprises.

In Fig. 8, channel resource request command (bandwidth response command) is used to allow the device request telegon to distribute, change, perhaps stop channel resource, carries out and arrive the relevant process of transfer of data of telegon or other equipment thus.The channel resource request command divides into groups to comprise n bandwidth request item destination field of indication, and wherein, one in n bandwidth request project comprises data format as shown in table 1.

Table 1

Reference table 1, channel resource request items field comprises: TargID field, the ID of the equipment of the distribution of its indication request channel resource; Stream request id field, the type of the request message of its indicating equipment; Stream index field, the stream index that its indication distributes through telegon; The minimum number destination field of the time block of the channel resource that indication comprises in a superframe; The maximum number destination field of the time block of indicating channel resource; Time block duration field, the duration of its each channel resource of indication; Minimum scheduling slot field, the scheduling slot that its indication is minimum; Maximum scheduling slot field, the scheduling slot that its indication is maximum; And the request control field, it comprises the solicited message of channel resource.

The stream index field indication is through the stream index of telegon assignment.According to data or type of service that slave unit transmits, telegon is the unique stream index of each flow distribution of WVAN.For example, if the device request synchronous flow, then stream index field is set to the stream index of not assignment.At equipment is being that stream index field is set to be used to transmit the value of asynchronous flow under the reservation of asynchronous flow request channel resource or the situation about stopping.

The minimum number destination field of the time block of indicating channel resource is illustrated in the minimal amount of the channel resource (for example, channel time blocks) of being asked in the superframe under the situation of device request channel resource with the transmission synchrodata; And it is illustrated in all numbers of the channel resource that comprises in the superframe under the situation of device request channel resource with the transmission asynchronous data.The maximum number destination field of the time block of indicating channel resource is represented the maximum number of the channel resource of slave unit request under the situation of device request channel resource with the transmission synchrodata; And under the situation of device request channel resource with the transmission asynchronous data, said field is preserved for the transmission of other data.

Time block duration field representes that be the time of consecutive hours in a plurality of channel resource blocks that in scheduling, comprise are being dispatched.

Minimum scheduling slot field representes when two channel resource blocks are assigned with continuously, from time of starting when first channel resource block to minimum value when period of time of second channel Resource Block startup.

Maximum scheduling slot field representes when two channel resource blocks are assigned with continuously, from time of starting when first channel resource block to maximum when period of time of second channel Resource Block startup.On the other hand, if device request is used for the channel resource of asynchronous data, then maximum scheduling slot field is represented the time when first channel resource block that in superframe, distributes starts.

The request control field is assigned the scheduling type of the channel resource that distributes through telegon and the type of physical layer.For example, if 1 bit is allocated for the indication scheduling type, then the static scheduling type is set to 1, and the dynamic dispatching type is set to 0.

As stated, equipment can ask telegon with the type through assign channel resources, time etc., comes allocation of channel resources may through the channel resource request command.

The telegon that has received the channel resource request command can after whether search exists the available channel of the equipment that will be assigned to, to equipment transfer channel resource response order (bandwidth response command).The channel resource response command comprises n channel response project (bandwidth response project), and it is corresponding with the response to n channel resource request items in the channel resource request command, comprising.In this case, channel resource response item field can comprise data format as shown in table 2.

Table 2

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

Reference table 2, stream request ID and stream index that the example shown of channel resource response item field is assigned like the channel resource request command that receives through slave unit.Channel resource response item field comprises stream request id field, stream index field and resource code field.Cause code field is assigned following code, and whether said code indication telegon comes allocation of channel resources may and indicate the reason that telegon why can not allocation of channel resources may according to the request of equipment.For example; If there is available channel resource in the result as the channel resource of telegon is searched for, then cause code field can be assigned 0 * 00 code; Its indication can be carried out channel resource allocation; If perhaps, then can transmit 0 * 02 code, impossible reason of indicating channel resource distribution owing to when device request additional channel resource, can not carry out the distribution of channel resource owing to transfer.

When to the channel resource of devices allocation certain limit, telegon transmits the assignment information of new channel resource to equipment through beacon.

Usually, in non-encoding state, transmit beacon, and beacon comprises management and the control information of the timing information and the WVAN of scheduling through omnidirectional low-rate physical data cell (LRPUDU).Bootstrap information divides into groups to comprise MAC control head, beacon control field and schedule information element (IE) field, and it indicates n schedule information.Usually, the IE data format comprises IE index, IE signal length and the field that comprises the information that will be transferred.

Scheduling IE is illustrated in the timing information of the scheduling in next superframe.For example, the scheduling IE that in a N beacon, comprises representes since the timing information of the superframe of N+1 beacon.Scheduling IE comprises n Scheduling Block, and each Scheduling Block comprises: be to the timing information of the first channel time BOB(beginning of block) of index information, the scheduling slot of the stream of its allocation schedule, the number of distributing to the channel time blocks of a scheduling, scheduling and the duration information of keeping each channel time blocks.

The beacon control field comprises: the beacon state field; The superframe timing information, it specifies in the timing information of the transmission intercal between the continuous beacon; And the field of the number of indication superframe.As shown in table 3 being configured of packet of the beacon state field that in the beacon control field, comprises.

Table 3

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

Reference table 3, the example of beacon state information comprises: free channel time field, its indication is according to the information of the existence of the available channel resources of channel resource request; The configuration change field, its indication is except the field of indication number of superframes, and whether the configuration of the channel resource of appointment changes in current beacon; Scheduling changes field, and its indication is compared with beacon before, and whether the dispatch channel resource on current superframe changes; The static scheduling field, whether its indication static scheduling IE has been included in the current beacon; The field that takes orders, it indicates whether to accept allocation request of channel resources; And reserved field, can other data be sent to this reserved field.

In table 3, if the telegon allocation of channel resources may, then free channel time can be set to 1, and if telegon determines not allocation of channel resources may, then free channel time can be set to 0.If there is not change, then can the configuration change field be set to 0.Though the static scheduling field can not need be included in all beacons, with the expense that reduces to take place owing to beacon, static scheduling IE can be included in the beacon termly.Equally, if in beacon, do not comprise static scheduling IE, then the static scheduling field can be set to 0.If the channel assignment request of telegon refusal equipment, the field that then takes orders also can be set to 0.

Formed WVAN through aforesaid process to equipment and other equipment of its allocation of channel resources may, and the channel resource that can pass through to be distributed transmits data.

One embodiment of the present of invention relate to the method for following allocation of channel resources may, and said method allows through aforementioned process to the equipment execution of its allocation of channel resources may and the two-way communication of other equipment.The method of allocation of channel resources may will be described with reference to figure 9 hereinafter.

Fig. 9 illustrates according to an embodiment of the invention, with the flow chart of the procedural example of a part from first devices allocation to second equipment of channel resource.

Hereinafter, describe for ease, the channel resource that distributes through the telegon from wireless network will be called as first equipment to the equipment of other equipment transmission datas, and will be called as second equipment from the equipment of first equipment receiving data.

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

First equipment transmits A/V data (S14) through the channel resource that distributes from telegon to second equipment.The A/V data mean the target data that is used for the transmission between the equipment, and comprise in voice data and the video data at least one.Yet, be not limited to the A/V data to the data that second equipment transmits from first equipment.Transmit the ack/nack signal (S15) of received data to first equipment from second equipment of first equipment receiving data.Ack signal means the ack signal that transmits to transfer equipment from receiving equipment, is normally received from the signal that transfer equipment transmits with indication.If receive ack signal, then transfer equipment can transmit next data.On the other hand, the NACK signal means the nack signal that transmits to transfer equipment from receiving equipment, causes signal not to be received normally with indication owing to dropout is perhaps wrong.If receive the NACK signal, then transfer equipment should data retransmission.That is, in Fig. 9, ack/nack signal is to indicate the affirmation signal that whether normally second equipment, has received from the data of first equipment transmission.

Step S14 and S15 are repeated; And then; If second device intends transmits the A/V data to first equipment, then second equipment is to the first equipment transfer channel resource request information, to ask first equipment part of the channel resource that distributes from telegon distributed (S16).For example, when cell phone when server transmits the data such as the larger capacity of music file, video is talked to be needed, some channel resource should be assigned to server, so that can carry out large-capacity data transmission and video talk.According to one embodiment of present invention, second equipment can ask first equipment rather than telegon to come allocation of channel resources may.

The part that first equipment that has received the channel resource solicited message is carried out the channel resource that decision will distribute from telegon is distributed to the process (S16) of second equipment.In this step, if first equipment decision to the part of the second devices allocation channel resource, then first equipment transmits A/V data (S17) through the part of the channel resource that distributes from telegon to second equipment.Second equipment transmits ack/nack signal to first equipment, and whether its indication A/V data normally receive (S18) from first equipment.Second equipment transmits A/V data (S19) to first equipment through the channel resource from first devices allocation.

Therefore; According to one embodiment of present invention; If first equipment is according to allocation request of channel resources; The part of the channel resource that distributes from telegon to second devices allocation then can be carried out the two-way communication between first equipment and second equipment under the situation from the distribution of the channel resource of telegon not.

Figure 10 illustrates according to an embodiment of the invention, the flow chart of the procedural example that request changes the channel resource that is assigned with from second equipment of the channel resource of first equipment.

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

As stated; If first equipment is according to the request of second equipment; To the part of second devices allocation from the channel resource of telegon distribution; Then second equipment is to the first equipment transfer channel resource changing solicited message, and wherein, channel resource changes the solicited message request and changes the channel resource (S21) that distributes according to the attribute that is sent to the A/V data of first equipment.Channel resource changes the solicited message request of being used to and increases or reduce the allotted channel resource.For example, fail to accomplish transfer of data,, then possibly further need channel resource if perhaps as video data, need continuous transfer of data if second equipment only uses from the channel resource of first devices allocation.Therefore, second equipment, first equipment of can asking increases channel resource.On the contrary, second equipment, first equipment of can asking reduces channel resource.

Whether first equipment decision that has received channel resource change solicited message accepts the request (S22) of second equipment.If the request of second equipment is accepted in the decision of first equipment, then first equipment changes solicited message according to channel resource, through the channel resource that has changed, transmits A/V data (S23) to second equipment.Then, second equipment transmits the ack/nack signal (S24) of the data that receive from first equipment, and through the channel resource that has changed from first devices allocation, to first equipment transmission data (S25).For example, if second device request, first equipment increases bandwidth range, and first equipment accepted the request of second equipment, and then first equipment can be given second equipment with more channel resource allocation through the channel resource that reduces it.

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

In the foregoing embodiments, can use the ack/nack signal that transmits to first equipment from second equipment to transmit the channel resource solicited message that transmits to first equipment from second equipment, with the distribution of request channel resource.The channel resource solicited message does not only transmit through ack/nack signal, but can transmit through other signal.

Usually, first equipment that belongs to wireless network will be sent to second equipment through the HRP channel from the data of the reserved field of the superframe shown in Fig. 5.According to one embodiment of present invention, second equipment also can transmit ack/nack signal, and its indication is through HRP channel, the affirmation information of the data that slave unit receives.If transmit ack/nack signal through the HRP channel, then can transmit this signal with HRP ACK packet type, as shown in fig. 1.Yet ack/nack signal does not only transmit through the HRP channel, but can transmit through the LRP channel.

With reference to Figure 11, if second equipment transmits ack/nack signal through the HRP channel to first equipment, then HRPACK divides into groups to comprise MAC control header fields 50 and HRPACK header fields 51.The channel resource solicited message can be included in the HRP ACK header fields 51 according to an embodiment of the invention.HRP ACK header fields 51 comprises: HRP ACK request field 511, its indication be through physical channel, that is, in HRP channel and the LRP channel which transmits ack/nack signal; ACK bitmap field 512, whether its second equipment of indicating has normally received each in seven sub-packet that is to the maximum that constitutes the grouping main body; Whether poll field 513, its second equipment of indicating can use packet rather than ACK to divide into groups to respond first equipment to confirm reception; Data field 514 co-pending, its indication will be sent to the existence of the data of first equipment from second equipment; And reserved field 517, if when additionally transmitting data, then can use reserved field 517.

The example of channel resource solicited message according to an embodiment of the invention can transmit through the part of reserved field.The HRPACK head can comprise: the time is asked (TR) field 515, can carry the information of the distribution of request channel resource therein; And/or the time changes (TC) field 516, the channel resource that its request change is distributed.That is, the part of reserved field 517 can up-to-dately be defined as TR field and/or TC field.From second equipment under the situation of the first devices allocation channel resource, TC field 516 comprises channel resource and changes solicited message, it is used to ask the channel resource that increases or reduce to be distributed.Therefore, different with the TR field, the TC field always is not defined within the part of HRPACK head.In other words, the HRPACK head can only comprise TR field 515, perhaps can comprise TR field 515 and TC field 516.If the TC field is not included in the HRP ACK head, then the TC field can be assigned with as reserved field.

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

Table 4

Data format	Time request (TR) data	Time changes (TC) data
			00	No time request	The no time changes
01	Time unconfinement data	Time increases
			10	The time-constrain data	Time reduces
11	Keep	Keep

Reference table 4, if the data-signal in TR field request allocation of channel resources may is " 00 ", then data-signal 00 expression does not have the state of requesting channel time allocation.If data-signal is " 01 ", then its not by the data conditions of continuous transmission, and its expression is used to not have the channel resource request of the transfer of data of time-constrain corresponding to the data that will transmit from second equipment.If data-signal is " 10 ", then its expression is used for according to the channel resource request such as the transfer of data of the time-constrain of vision signal.If data-signal is " 11 ", then whether its expression TR field is retained.

When the channel resource request of first equipment according to second equipment, when the part of the channel resource that will distribute from telegon was distributed to second equipment, the TC field that request changes channel resource was enough.In other words; The part of the channel resource that will distribute from telegon at first equipment is distributed under the state of second equipment; If the data-signal of TC field is " 00 ", then it representes that second device request, first equipment keeps the channel resource period from first devices allocation.If data-signal is " 01 ", then it representes that second device request, first equipment increases the channel resource that is distributed.If data-signal is " 10 ", then it representes that second device request, first equipment reduces the channel resource that is distributed.If data-signal is " 11 ", then its expression TC field is retained, and is the same as the TR field.

The number of distributing to the bit of TR field and TC field is not limited to aforesaid embodiment, and can obtain in every way.According to another embodiment of the present invention, if 1 Bit Allocation in Discrete is given the TR field and given the TC field with 2 Bit Allocation in Discrete, then the data-signal in the TC field is as shown in table 1 is configured.Under the situation of TR field, if data-signal is " 0 ", then the distribution of channel resource is not asked in its expression.If data-signal is " 1 ", then the distribution of channel resource has been asked in its expression.According to still another embodiment of the invention, if 1 bit is distributed to TR field and TC field respectively, if then data-signal is " 0 ", then the distribution of channel resource or the change of channel resource are not asked in its expression.And if data-signal is " 1 ", then the distribution of channel resource or the change of channel resource have been asked in its expression.

As stated, received from second equipment that first equipment that particular channel resource request information and/or channel resource change solicited message does not need to receive solicited message and/or channel resource changes solicited message.First equipment can determine whether whether the step S17 or the decision of allocation of channel resources may change among the step S22 of the channel resource that is distributed, and the importance that is based on the data that transmit between first equipment and second equipment decides the request of second equipment of acceptance.

For example, first equipment priority orders that can be based on the data transmission in the deciding step decides the request of response second equipment.

First equipment can be asked the part of the second devices allocation channel resource.First equipment can be asked the distribution of channel resource, and/or uses the ack/nack signal of the A/V data that receive from second equipment to ask to change the channel resource that is distributed.That is, TR field and/or TC field can be included in the HRP ACK head.

For example, suppose that first equipment and second equipment gives TR field and TC field with 2 Bit Allocation in Discrete respectively, and data-signal is as shown in table 4 is defined.In this case, if the data-signal in the TR field of first equipment and second equipment is " 01 ", then it representes that first equipment and second equipment all asks not have the distribution of the channel resource of time-constrain, and has identical transmission sequence.And if the data-signal in the TR field of first equipment and second equipment is " 10 ", then it representes that first equipment and second equipment all asks to have the distribution of the channel resource of time-constrain, and has identical transmission sequence.Therefore, should determine the equipment of whether accepting this request to come allocation of channel resources may randomly based on other standards.If the data-signal in the TR of first equipment field is " 10 "; And the data-signal in the TR of second equipment field is " 01 "; Then owing to having time-constrain, so aspect transmission, first equipment is before second equipment from the data that first equipment transmits.Therefore, first equipment can be refused the allocation request of channel resources of second equipment.

On the other hand; Data-signal in the TR of first equipment field is " 01 ", and the data-signal in the TR of second equipment field is under the situation of " 10 ", owing to will have time-constrain from the data that second equipment transmits; Then aspect transmission, second equipment is before first equipment.Therefore, through accepting the allocation request of channel resources of second equipment, first equipment can be to the part of second devices allocation from the channel resource of telegon distribution.At this moment, second equipment can be to the first equipment transfer channel resource changing signal, and wherein, channel resource changes the channel resource that request signal increases or reduces to be distributed.

Hereinafter, Figure 12 and Figure 13 are intended to describe the type according to the channel resource allocation of previous embodiment of the present invention.

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

With reference to Figure 12, if first equipment uses certain range of channel resource of distributing from telegon, transmit the A/V data to second equipment through the HRP channel, then second equipment uses the HRP channel to transmit the ack/nack signal of received A/V data to first equipment." A " is the channel resource that second equipment does not have request at interval, and the TR field data signal of HRP ack signal is represented through " 00 ".Second equipment that receives data transmits the ack signal as the same TR field data signal with " 10 " of second scheduling at interval " A " to first equipment, with the request channel resource.Then, first equipment transmits the A/V data through the part of its all channel resource, and comes to receive A/V data and ack/nack signal from second equipment through other parts except the channel resource that is assigned to second equipment.

Received the second equipment transfer channel resource changing solicited message of channel resource, the channel resource that its request increases or reduces to be distributed, wherein, channel resource changes solicited message and is included in the TC field of HRP ACK head.If the data-signal of TC field equally is " 00 " as first scheduling of " B " at interval, then first equipment can be kept the current channel resource of sharing type according to the solicited message that the channel resource of distributing to second equipment is kept in request.In this case, first equipment can ask second equipment so that its channel resource that is assigned to second equipment is redistributed.

In Figure 12, as stated, beacon is the signal of second equipment that is sent to from first equipment termly through the LRP channel, to discern the beginning part of each superframe.Through being used for the beacon of next scheduling, second equipment receives from the information of the channel resource of first devices allocation.For example, first equipment can through beacon will be relevant with the number of the CTB that comprises in each scheduling information, CTB is used for the start-up time of data when first equipment is sent to second equipment, duration that first equipment uses CTB, perhaps can being used for data are transferred to second equipment from the duration that second equipment is sent to the CTB of first equipment when beginning.In interval " A ", between equipment, do not have shared channel resources, and the scheduling that in interval " A ", comprises has identical type.In interval " B ", shared channel resources between equipment, and the scheduling that in interval " B ", comprises also has identical type.

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

If give second equipment with channel resource from first devices allocation, then second equipment can increase 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 part of the channel resource that will distribute from telegon when first equipment is distributed to second equipment; It sends the A/V data to second equipment through other channel resources, and the channel resource that passes through to be distributed to receive the A/V data from second equipment.Then, second equipment can use the channel resource that the ack/nack signal of the A/V data that receive from first equipment asks first equipment to increase or reduce to be distributed.For example; If second device request, first equipment increases the distribution of channel resource; And the HRP ack signal for the data-signal of " 01 " that will be included in the TC field is sent to first equipment; And first equipment is accepted the request of second equipment, and then said first equipment reduces to be used for the channel resource of next A/V transfer of data, and gives second equipment with other channel resource allocation.In other words, the usable range of the channel resource of second equipment has increased the decrease of the employed channel resource of first equipment.In Figure 13, " C " expression second equipment transmits data according to the channel resource increase request of second equipment through the more channel resource in a certain range of channel resource at interval.If second device request, first equipment reduces channel resource, then its ack/nack signal for the data-signal of " 10 " that will be included in the TC field is sent to first equipment.If first equipment is accepted the request of second equipment, then the distribution of channel resource is controlled, realized " D " at interval thus.If second equipment is intended to keep the amount of current channel resource, as interval " E ", then the data-signal of TC field should be set to " 00 ".

As stated; According to one embodiment of present invention; Whether come allocation of channel resources may through decision clearly in response to the request of second equipment; With first equipment that received a certain channel resource from telegon to the such mode of the second devices allocation channel resource, shared channel resources between first equipment and second equipment.If first equipment is accepted the request of second equipment, then it only comes to transmit the A/V data to second equipment through the part of the channel resource that distributes from telegon.If first equipment is refused the request of second equipment, then it is under the situation of the response message that transmit not to separate, and the channel resource through all distribution transmits the A/V data to second equipment.

According to another embodiment of the invention, for allocation of channel resources may with change the channel resource distributed, whether accept request through decision, the equipment that has received request signal transmits independent particular message to the equipment that has transmitted request signal.

Figure 14 illustrates in accordance with another embodiment of the present invention, the flow chart of the procedural example of allocation of channel resources may.According to another embodiment of the invention, the process of allocation of channel resources may comprises the allocation request of channel resources according to second equipment, and signal channel resource allocation information or channel resource are changed information sends second equipment clearly to from first equipment process.

With reference to Figure 14; Since identical to second equipment transmission data through the channel resource that distributes from telegon with step S10 to S16 from the step S30 to S36 of the second equipment receive channel resource allocation request information and Fig. 9 from first equipment, so will omit description to it.

Whether first equipment decision that has received the channel resource solicited message from second equipment gives second equipment (S37) with channel resource allocation.If the decision of first equipment is given second equipment with channel resource allocation, then it sends signal channel resource allocation information to second equipment, and wherein, said signal channel resource allocation information indicates whether the part (S38) of allocation of channel resources may.If first equipment refusal allocation request of channel resources, then it sends the signal channel resource allocation information of refusing the channel resource request to second equipment in step S38.That is, be different from the 9 described channel resource allocation with reference to figure, first equipment indicates whether to give second equipment with channel resource allocation clearly.At this moment, be described below, the signal channel resource allocation information that sends second equipment to is included in the MAC head.

First equipment that has determined the part of channel resource is distributed to transmit A/V data (S39) to second equipment through the part of the channel resource that distributes from telegon.The ack/nack signal of the A/V data that second equipment will receive from first equipment sends first equipment (S40) to, and sends the A/V data to first equipment (S41) through the channel resource from first devices allocation.

Figure 15 illustrates in accordance with another embodiment of the present invention, the flow chart of another example of the process of allocation of channel resources may.Figure 15 illustrates the example of the method for allocation of channel resources may, and wherein, second equipment increases or reduces channel resource through first equipment of asking to be controlled from the scope of the channel resource of first devices allocation.

With reference to Figure 15, the step S39 to S41 of a part from first devices allocation to second equipment of the channel resource that will distribute from telegon according to the allocation request of channel resources of second equipment is identical with the step of describing with reference to Figure 14.

As stated, under the situation that the part of channel resource is distributed, second device request, first equipment increases or reduces to distribute to the channel resource (S42) of first equipment.Receive the request (S43) whether first equipment decision that channel resource changes request signal accepts second equipment from second equipment.If the decision of first equipment is accepted or refusal should change request, then it sends channel resource change information to second equipment, to indicate such determination result (S44).If in step S43; First equipment is accepted the request of channel resource changing; Then it increases or reduces to distribute to the channel resource of second equipment, and sends the A/V data to second equipment (S44) through other parts except the channel resource of distributing to second equipment in the middle of all channel resources that distribute from telegon.Then, second equipment transmit the ack/nack signal (S45) of the data that receive from first equipment and the channel resource that passes through to be distributed with the A/V transfer of data to first equipment (S46).

As stated; According to another embodiment of the present invention; Whether accept that channel resource request signal and channel resource change signal and the decision information of the distribution of channel resource sent to have transmitted request signal and second equipment that changes signal through decision, first equipment that has received channel resource request signal and channel resource change signal conclusivelys show the request whether it has accepted second equipment.

Such as below with reference to table 5 and Figure 16 description ground, signal channel resource allocation information can be included in the reserved field in the grouping control field of MAC control head data format.The example of the transformat of signal channel resource allocation information includes, but are not limited to, MAC control head data format.

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

Table 5

Eight hytes: 3	?1	1	1	1	1
						Divide into groups to control	?SrcID	DestID	WVANID	Stream index	Keep

In wireless network, MAC control head comprises: SrcID field, its setting are wanted the STID of first equipment of A/V data; The DestID field, it is provided with the STID of second equipment that receives the A/V data; The WVNID field, its identification comprises the WVAN of equipment; Stream index field; And reserved field.According to another embodiment of the invention, the signal channel resource allocation information that sends second equipment from first equipment to can be included in the grouping control field of table 5, particularly, and in the reserved field of Figure 16.

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

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

With reference to Figure 16, if 1 bit is distributed to TRC field and TCC field respectively, then signal channel resource allocation information and channel resource change information can use " 0 " perhaps " 1 " transmit.For example, if with TRC field and the corresponding data of TCC field are " 0 ", then it can represent that first equipment refused the request of second equipment.If with TRC field and the corresponding data of TCC field are " 1 ", then it can be represented through accepting the request of second equipment, first equipment increases or reduces the range of distribution of channel resource.

Be not limited to shown in Figure 16 with TRC field and the corresponding bit of TCC field.First equipment can through change distribute to each field bit or come to transmit more detailed channel allocation information through more bits being distributed to each field to second equipment.Again for example, suppose to give the TCC field with 2 Bit Allocation in Discrete.In this case, if the data of TCC field are " 00 ", then its expression refusal channel resource changes request.And if the data of TCC field are " 01 ", then it representes that first equipment will ask to increase channel resource according to the increase of channel resource.In addition, if the data of TCC field are " 10 ", then it representes that first equipment will reduce channel resource according to the request that reduces of channel resource.At last, if the data of TCC field are " 11 ", then it representes that first equipment will keep request.

In other words; Through to TRF field and TCC field more data bit, first equipment can be with comprising that signal channel resource allocation information or channel resource such as the channel resource information of the type of channel resource or range of distribution change message transmission to second equipment.

Figure 17 and Figure 18 illustrate in accordance with another embodiment of the present invention, the view of the channel that between first equipment and second equipment, distributes type regularly.Hereinafter, will be based on 1 bit being distributed to TRC field and TCC field respectively, transmit and receive and 2 bits are distributed to the data that the example of TR field and TC field describes according to channel resource allocation respectively.

With reference to Figure 17, first equipment will comprise that the A/V data of MAC head send second equipment to.At this moment, the TRC field that in the MAC head, comprises and the primary data of TCC field are set to " 0 ".Second equipment that has received the A/V data transmits ack signal to first equipment, and wherein, ack signal comprises MAC head part and HRP ACK packet partial.According to one embodiment of present invention, MAC head branch comprises: the TRC field, and it has signal channel resource allocation information; And/or the TCC field, it has channel resource and changes information.HRP ACK divides into groups to comprise: the TR field, and it has aforesaid channel resource solicited message; And/or the TC field, it has channel resource and changes solicited message.

If the part of second device request, the first devices allocation channel resource, the data of the TR field during then first equipment can divide into groups through HRP ACK be set to the data of " 01 " and TC field and be set to " 00 " and transmit data.If according to the priority orders of transmission data, first equipment is intended to refuse the channel resource solicited message, then its data through the TRC field of the MAC head in sending the A/V data of second equipment to are set to " 0 " and send data to second equipment.At this moment, owing to do not have from first equipment to the second devices allocation channel resource, so the data of TCC field are set to " 0 " (" A " at interval).

On the other hand, if first equipment is accepted the channel time request (the TR field data is " 10 ") of second equipment, then the data of TRC field are set to " 1 ".Change according to channel resource allocation owing to be used for the interval of channel resource, so the data of TCC field are set to " 1 " (" B " at interval).Therefore, first equipment uses from the part of the bandwidth of telegon distribution to transmit the A/V data to second equipment, and the bandwidth that second equipment passes through to be distributed to transmit the A/V data to first equipment.Under the state of two equipment shared channel resources, if the data of the second equipment TC field are set to " 00 ", and transmit ack signal, then channel resource can be shared between equipment.Even in this case, first equipment also can ask second equipment in the scope of the channel resource of distributing to second equipment, redistributes channel resource through the ack/nack signal of the A/V data that receive from second equipment,

As stated, it is corresponding with the step 38 of Figure 14 to come to transmit response message clearly to second equipment in response to the channel resource solicited message of second equipment through the MAC head.First equipment can be transferred to second equipment with channel resource information more accurately through clearly indicating whether allocation of channel resources may.

With reference to Figure 18; Share under the situation of a certain range of channel resource at first equipment and second equipment; If second device request, first equipment changes channel resource; Such as increasing or reduce channel resource, then first equipment can send the MAC head that comprises channel resource change information to second equipment.

If second equipment is set to " 10 " through the data of the TR field that HRP ACK divides into groups; And the TC field is set to " 01 " and comes to first equipment transmission data; And first device intends is kept the current shared state of channel resource, and then it can refuse channel resource change information.In this case, the data of the TRC field that first equipment can be through the MAC head are set to " 1 ", and the data of TCC field are set to " 0 " (" C " at interval), come to second equipment transmission data.On the other hand; Change request if first equipment is accepted the channel resource of second equipment, then the data of the data of TRC field and TCC field are set to " 1 ", and send it to second equipment then; Wherein, data are included in (" D " at interval) in the MAC header data.

As stated, it is corresponding with the step S44 of Figure 15 to come to transmit response message clearly to second equipment in response to the channel resource change solicited message of second equipment through the MAC head.

The equipment of wireless network can be play the A/V data through the processing that will describe subsequently, wherein, through antenna from the broadcasting station or cable, satellite import the A/V data.And, when filling apparatus during when source device on the wireless network or transfer equipment, its remotely at least one in the stay of two nights (sink) equipment or receiving equipment transmit received A/V data.In previous embodiment of the present invention, the source device of transmission data or transfer equipment are corresponding to first equipment, and the sink device of reception data or receiving equipment are corresponding to second equipment.

With reference to Figure 19, the broadcast singal system that comprises first equipment according to an embodiment of the invention comprises first equipment 70, remote controllers 71, local memory device 72 and is used to carry out the network equipment 73 with the radio communication of second equipment 74.

First equipment 70 comprises 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, first equipment further comprises and the delivery module 708 direct-connected local memory devices 72 that comprise input and output port.Yet local memory device can be mounted in the memory device in first equipment 70.

Delivery module 708 can communicate with wire/radio network equipment 73, and can be connected with at least one second equipment 74 through the network equipment 73, and wherein, at least one second equipment 74 is present in the wireless network.Control signal communication module 709 receives user control signal according to the for example user control device of remote controllers, and received signal is outputed to control module.

Receiver module 701 can be to receive the tuner of the broadcast singal of CF through in earthwave, satellite, cable and the internet network at least one.Can receiver module 701 be provided respectively in the broadcast source each, said broadcast source for example is ground wave broadcast, cable broadcast, satellite broadcasting and personal broadcaster.Alternatively, receiver module 701 can be unified tuner.And, suppose that receiver module 701 is the tuners that are used for ground wave broadcast, at least one digital tuner and at least one analog tuner then can be provided respectively, perhaps the digital-to-analog tuner can be provided.

In addition, receiver module 701 can receive through flowing from wired Internet Protocol of transmitting with radio communication (IP).If receiver module 701 receives IP stream, then receiver module 701 can be handled to transmit and receive and divide into groups according to the IP agreement of the source and destination ground information of the grouping of having set up that the IP that is used to receive divides into groups and having transmitted from receiver.Receiver module 701 can be exported the video/audio/data stream that in received IP divides into groups, comprises according to the IP agreement, and its can according to the IP agreement generate to be sent to network as IP transmission packets stream, with its output.Receiver module 701 is the elements that receive outside incoming video signal, and for example, can receive IEEE 1394 type video/audio signals from the outside, perhaps HDMI type stream.

And according to embodiments of the invention, receiver module can be from the second equipment receive channel resource allocation request information, and the channel resource that perhaps distributes changes solicited message, perhaps can receive the A/V data from second equipment.

Demodulation module 702 to carrying out demodulation through the broadcast singal in the middle of the data of receiver module 701 inputs, perhaps carries out demodulation to the broadcast singal that transmits from second equipment with the order opposite with modulating mode.Demodulation module 702 is through separating the output broadcasting stream of transferring to broadcast singal.If receiver module 701 receives the for example stream type signal of IP stream, then after ignoring demodulation module 702, IP stream is outputed to decoder module 703.

Decoder module 703 comprises audio decoder and Video Decoder, and decodes to flowing from the broadcasting of demodulation module 702 outputs through decoding algorithm, and flows to display module 704 output decoders.At this moment, the demodulation multiplexer (not shown) of cutting apart each stream according to respective identifier can additionally be provided at demodulation module 702 and decode between every module 703.Demodulation multiplexer is divided into audio element stream (ES) and video elementary stream with broadcast singal, and it is outputed to each decoder of decoder module 703.And, if in a channel multiplexing a plurality of programs, then demodulation multiplexer is only selected the broadcast singal by user selected program, and selected broadcast singal is divided into video elementary stream and audio element stream.Event data stream or system information flows are included in the broadcast singal of demodulation, then through demodulation multiplexer it are cut apart, and send it to corresponding decoding block (not shown) then.

Display module 704 shows the broadcasted content that receives from receiver module 701 and the content of storage local memory device 72.Display module 704 can show whether instruction memory equipment has been installed in the menu in first equipment according to the control command of control module 215; And the information relevant with the residual capacity of memory device, and display module 704 can be operated under user's control.

Control module 705 can be controlled the operation of aforementioned modules (receiver module, demodulation module, decoder module, display module, graphic process unit, network control module and interface module).And control module 705 shows the menu that receives user's control commands, and drives the application that shows various information, perhaps is used for the menu of user's broadcast signal process system.

For example, if local memory device 72 is installed in first equipment, then control module 705 can read out in the content of storage in the local memory device 72.And if local memory device 72 is installed in first equipment, then control module 705 can be controlled the operation of local memory device 72, makes the broadcasted content that receives from receiver module 701 be stored in the local memory device 72.In addition, control module 705 can be exported control signal, is used for according to local memory device 72 first equipment that whether is installed in local memory device 72 being installed.

The residue memory capacity of control module 705 inspection local memory devices 72, and allow on display module 704, to show the information that remains memory capacity for the user through graphic process unit 707.If local memory device 72 residue lack of memory capacities, then control module 705 can arrive remote storage device with the transfer of content of storage in local memory device 72.In this case, the menu that control module 705 can show below through display module 704, whether the content of this menu indication storage in local memory device 72 transfers to another memory device (not shown), perhaps transfers to remote storage device.And control module 705 can receive the user control signal with processing menu.Therefore, the content that control module 705 can allow to store in the memory device of or long-range installation direct at local memory device 72 and other shifts each other, and it is stored in wherein.

In addition, if from the solicited message of receiver module 701 transfer channel resource allocations, then control module 705 can be given channel resource control module 706 with request message transmission, perhaps directly control channel resource allocation.

706 pairs of distribution from the channel resource of telegon of channel resource control module are controlled, and make the equipment of winning 70 send data on the WHDI network second equipment.In order to make the equipment of winning send data to second equipment, should channel resource be distributed to first equipment from telegon.Therefore, channel resource control module 706 can the control channel resource, sends telegon to the allocation request of channel resources information of the distribution that will be used to ask channel resource, perhaps can control the channel resource that distributes from telegon.

And; If according to embodiments of the invention; Ask the distribution of channel resource from second equipment 74, then channel resource control module 706 can determine whether giving second equipment with channel resource allocation according to this request, and perhaps whether control changes the channel resource that is distributed.Promptly; If directly transmit from receiver module 701 from the allocation request of channel resources information that second equipment transmits; Perhaps transmit through control module 705; Then whether channel resource control module 706 can determine allocation of channel resources may, and can determine the range of distribution in response to allocation request of channel resources.If the information of the channel resource allocation through channel resource control module decision is transferred to control module 705, then control module 705 is given second equipment with channel resource allocation, perhaps changes the scope of the channel resource that is distributed, the data that produced with control.

Channel resource control module 706 can decide the usable range and the range of distribution of channel resource based on the determination result of the scope of channel resource; And can pass through delivery module 708; And do not come the control channel resource through control module 705, to carry out the two-way communication with second equipment 74.And; Can transmit the allocation request of channel resources information or the channel resource that receive from second equipment 74 to control module 705 with channel resource control module 706 and change solicited message, and control module 705 decisions are that the acceptance or the such mode of request of refusal second equipment are come the control channel resource.

Describe for ease, though control module 705 and network control module 706 are provided in Figure 19 individually, these control modules can realize through a System on Chip/SoC shown in dotted line.

Graphic process unit 707 is handled the figure that will show, make through display menu screen in display module 704 video image displayed, and the control figure is presented in the display module 704 with menu screen.

Delivery module 708 can transmit data with wireless network at least one second equipment 74 through wired, and can comprise interface module, to carry out the two-way communication between equipment.If from the telegon allocation of channel resources may, then first equipment in the scope of the channel resource that is distributed, through delivery module 708 to second equipment transmission data.

Interface module can be docked with at least one second equipment 74 with wireless network through wired.The example of interface module comprises ethernet module, bluetooth module, short-distance wireless internet module, portable internet module, the PNA of family module, IEEE 1394 modules, PLC module, the RF of family module, IrDA module.Simultaneously, delivery module 708 can be exported control signal to remote storage device, and wherein, control signal can energized.For example, though in Figure 19, do not illustrate, delivery module 708 can be through transmitting the power supply that the WOL signal is connected independent remote storage device to the Network Interface Module with independent remote storage device executive communication.

Term at this can replace with other term.For example, " equipment " can use subscriber equipment (perhaps machine), station to wait and replace, and " telegon " can be used, and coordination (control) equipment, coordination (perhaps control) are stood, piconet coordinator (PNC) waits and replaces.And, the equipment that will send other equipment to from a certain range of channel resource that telegon distributes can use " initiator " perhaps " transfer equipment " replace, wherein, said " transfer equipment " is for the equipment that receives data.The equipment that receives data can use " target device " perhaps " receiving equipment " replace, wherein, " receiving equipment " is for the equipment that transmits data.

It will be apparent to those skilled in the art that under the situation that does not break away from spirit of the present invention and intrinsic propesties, can embody the present invention with other specific forms.Therefore, above embodiment should be considered to illustrative in all fields, rather than restrictive.Scope of the present invention should be confirmed through the proper explanations to accompanying claims, and all changes that drop in the equivalency range of the present invention all are included in the scope of the present invention.

Claims

One kind in wireless network with channel resource the method from first devices allocation to second equipment, comprising:

From telegon receive channel resource allocation information, said signal channel resource allocation information is used to give said first equipment with said channel resource allocation;

Through the said channel resource that distributes from said telegon to said second equipment transmission data;

Receive channel resource request information, said channel resource solicited message are used to ask said first equipment that the part of said channel resource is distributed to said second equipment; And

According to said channel resource solicited message, determine whether the part of said channel resource is assigned to said second equipment.
2. method according to claim 1, wherein, said channel resource is channel time blocks (CTB).
3. method according to claim 1, wherein, said channel resource solicited message is included in HRP (high-rate physical layer) the ACK head.
4. method according to claim 1, if the said allocation request of channel resources of decision refusal then further comprises: the entire portion through the said channel resource that distributes from said telegon is sent to said second equipment with data.
5. method according to claim 4 further comprises: to the said second equipment transfer channel resource allocation information, to refuse said allocation request of channel resources.
6. method according to claim 5, wherein, said signal channel resource allocation information is included in MAC (medium access control) head.
7. method according to claim 1 if said allocation request of channel resources is accepted in decision, then further comprises:

Come to said second equipment transmission data through the part of said channel resource; And

Come from said second equipment receiving data through other parts except the said part of said channel resource.
8. method according to claim 7 further comprises: to the said second equipment transfer channel resource allocation information, to accept said allocation request of channel resources.
9. method according to claim 8, wherein, said signal channel resource allocation information is included in the said MAC head.
10. method according to claim 7 further comprises: receive channel resource changing solicited message, said channel resource change solicited message and are used to ask to increase or reduce the said channel resource to said second devices allocation.
11. method according to claim 10, wherein, said channel resource changes solicited message and is included in the said HRPACK head.
12. method according to claim 10 further comprises: change solicited message according to said channel resource, determine whether to change the scope of the said channel resource of distributing to said second equipment.
13. method according to claim 12 if the said channel resource of decision refusal changes request, then further comprises: the scope of keeping the said channel resource of distributing to said second equipment.
14. method according to claim 13 further comprises:, change request to refuse said channel resource to the said second equipment transfer channel resource changing information.
15. method according to claim 12 changes request if said channel resource is accepted in decision, then further comprises:

Change solicited message according to said channel resource, come to said second equipment transmission data through the part that changes scope of said channel resource; And

Other parts through except the said part that changes scope of said channel resource are come from said second equipment receiving data.
16. method according to claim 15 further comprises:, change request to accept said channel resource to the said second equipment transfer channel resource changing information.
17. method according to claim 16, wherein, said channel resource change information is included in the said MAC head.
18. an equipment, said equipment are first equipment that is assigned from the channel resource of the telegon in the wireless network, said equipment comprises:

Delivery module, said delivery module comes to second equipment transmission data through the said channel resource that distributes from said telegon;

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

The channel resource control module, said channel resource control module determines whether the part to the said channel resource of said second devices allocation according to said allocation request of channel resources information.
19. equipment according to claim 18; Wherein, If said allocation request of channel resources is accepted in decision; Then said channel resource control module is come to said second equipment transmission data through the part of said channel resource, and comes from said second equipment receiving data through other parts except the said part of said channel resource.
20. equipment according to claim 19, wherein, said channel resource control module is come to the said second equipment transfer channel resource allocation information, to accept said allocation request of channel resources through said delivery module.
21. equipment according to claim 19; Wherein, Said receiver module receive channel resource changing solicited message; Said channel resource changes the said channel resource that solicited message is used to ask to increase or reduce to distribute to said second equipment, and whether the decision of said channel resource control module changes the scope of the said channel resource of distributing to said second equipment.
22. equipment according to claim 21, wherein, if the said channel resource of decision refusal changes request, then said channel resource control module is kept the scope of the said channel resource of distributing to said second equipment.
23. equipment according to claim 22, wherein, said channel resource control module to the said second equipment transfer channel resource changing information, changes request to refuse said channel resource through said delivery module.
24. equipment according to claim 21; Wherein, If accepting said channel resource, decision changes request; Then said channel resource control module changes request message according to said channel resource comes to said second equipment transmission data through the part that changes scope of said channel resource, and comes from said second equipment receiving data through other parts except the said part that changes scope of said channel resource.
25. equipment according to claim 24, wherein, said channel resource control module to the said second equipment transfer channel resource changing information, changes request to accept said channel resource through said delivery module.