CN110474746A

CN110474746A - A kind of dispatching method and device

Info

Publication number: CN110474746A
Application number: CN201810451338.7A
Authority: CN
Inventors: 李德建; 刘劲楠
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-05-11
Filing date: 2018-05-11
Publication date: 2019-11-19
Anticipated expiration: 2038-05-11
Also published as: WO2019214743A1; CN110474746B

Abstract

The application provides a kind of dispatching method and device, is related to field of communication technology, can save the transport overhead of scheduling information, improves the efficiency of transmission of scheduling information.Method includes: the broadcast frame for sending bearing structure cell, and structure cell is used to indicate the TDD structure of time slot for distributing to the Time Division Duplex TDD period of service SP of site STA；Wherein, structure cell includes structure of time slot control field and timeslot scheduling field, and does not include structure of time slot time started field and/or distribution block duration field.

Description

A kind of dispatching method and device

Technical field

This application involves field of communication technology more particularly to a kind of dispatching methods and device.

Background technique

Time division duplex (time in wireless LAN communication standard electronic and electrical engineering association 802.11ay Division duplex, TDD) mode scheduling in, time slot is divided into three-decker, is divided into according to the size of slot length The TDD period of service (Service Period, SP), the interval TDD (interval) and TDD time slot (slot).Wherein, TDD SP can It can be divided at least one distribution block, each distribution block includes a identical interval TDD Q (Q >=2, Q are integer), each TDD Interval includes M (M >=2, M are integer) a TDD time slot, and the length at each interval TDD is identical, and the length of each TDD time slot can match It sets.

Currently, being directed to backhaul (backhaul) communication scenes, the dispatching method based on TDD time slot is proposed.This method are as follows: connect Access point (Access point, AP) sends scheduling by beacon (beacon) frame or notice (Announce) frame in each sector Information, scheduling information include extension schedule element (Extended schedule element), TDD structure of time slot cell (TDD Slot Structure IE) and TDD timeslot scheduling cell (TDD Slot Schedule IE).Wherein, schedule element is extended TDD SP including each website (station, STA) distribution that AP is this scheduling.Assuming that this dispatches n STA altogether, then Extending then includes n STA allocation field in schedule element, the corresponding allocation field of each STA, is including AP in allocation field Purpose association identification (the Association of allocation identification (allocation ID), the STA that corresponding STA is distributed Identifier, AID), distribution time started (at the beginning of the TDD SP for distributing to the STA), distribution block duration, distribution Block number etc..It extends each allocation identification in schedule element and corresponds to a TDD structure of time slot information, TDD structure of time slot letter Breath includes corresponding allocation identification, and the TDD structure of time slot information is for when describing the TDD of TDD SP indicated by the allocation identification Gap structure, for example, the structure of time slot time started (at the beginning of the distribution block for distributing to corresponding STA), distribution block duration, when Gap structure controls information (including the interval TDD quantity, guard time duration, block period etc.) and timeslot scheduling information (including TDD The duration etc. of number of time slots and each TDD time slot).The each allocation identification extended in schedule element also corresponds to a TDD Timeslot scheduling information, TDD timeslot scheduling information include corresponding allocation identification, which includes a scheduling Indicate that information, scheduling instruction information are used to indicate the Time Slot Occupancy bitmap and/or time slot access class of STA corresponding to the allocation identification Type.

After STA receives the scheduling information of AP transmission, the purpose association of oneself can be searched from extension schedule element Mark, and determine allocation identification corresponding to the purpose association identification, so that it is determined that AP is which TDD SP oneself be assigned with.So Afterwards by allocation identification corresponding to the association identification of oneself, from the AP each TDD structure of time slot information broadcasted and TDD time slot tune It spends in information, determines TDD structure of time slot information corresponding with the allocation identification and TDD timeslot scheduling information.Then at AP points It is communicated in the TDD SP matched based on corresponding TDD structure of time slot information and TDD timeslot scheduling information.

Summary of the invention

The application provides a kind of timeslot scheduling method and device, can save the transport overhead of scheduling information, improves scheduling The efficiency of transmission of information.

In a first aspect, the application provides a kind of dispatching method, it is applied to access device, method includes: transmission bearing structure The broadcast frame of cell, structure cell are used to indicate the TDD structure of time slot for distributing to the Time Division Duplex TDD period of service SP of site STA； Wherein, structure cell includes structure of time slot control field and timeslot scheduling field, and does not include structure of time slot time started word Section and/or distribution block duration field.

Using dispatching method provided by the present application, by the frame type of bearing structure cell, flexible control structure cell In whether occur unnecessary structure of time slot time started field and/or distribution block duration field, frame type be broadcast frame When, it does not include structure of time slot time started field and/or distribution block duration field in structure cell, to save scheduling information Expense improves the efficiency of transmission of scheduling information.

Optionally, before the broadcast frame for sending bearing structure cell, this method further include: by broadcast frame bearing structure In the case where cell, determining structure cell not includes structure of time slot time started field and/or distribution block duration field.

Second aspect, the application provide a kind of dispatching method, are applied to STA, send this method comprises: receiving access device Structure cell, structure cell is carried on broadcast frame, and structure cell includes structure of time slot control field and timeslot scheduling word Section, and do not include structure of time slot time started field and/or distribution block duration field；Access device point is determined according to structure cell The TDD structure of time slot of the Time Division Duplex TDD period of service SP of dispensing STA, and do not include that structure of time slot starts in the structure cell In the case of time field and/or distribution block duration field, field obtains TDD time slot since the distribution of the extension cell received The time that structure comes into effect, and/or the distribution block that TDD structure of time slot comes into force is obtained from the distribution block duration field of extension cell Duration.

Using dispatching method provided by the present application, STA is not wrapped in structure cell when passing through broadcast frames reception structure cell It includes structure of time slot time started field and/or distribution block duration field and improves scheduling information to save the expense of scheduling information Efficiency of transmission.

The third aspect, the application provide a kind of dispatching method, are applied to access device, this method comprises: determination is to be sent An extension cell, X structure cell and M scheduling cells, an extension cell, X structure cell and M scheduling cells Time Division Duplex TDD channel access is carried out in period of service SP for dispatching N number of site STA, wherein N >=2,1≤X < N, 1≤M < N, N, X and M are integer；Wherein, extending includes N number of STA structure in an allocation field for distributing to N number of STA in cell At group group identification, allocation field is used to indicate the TDD SP that access device distributes to N number of STA；X structure cell is used In the TDD structure of time slot of instruction TDD SP；M scheduling cells include N number of scheduling indication field, N number of scheduling indication field with it is N number of STA is corresponded, and scheduling indication field is used to indicate TDD Time Slot Occupancy of the corresponding STA in the interval TDD that TDD SP includes Bitmap and/or TDD time slot access style；An extension cell, X structure cell and M scheduling cells are sent to N number of STA.

Using dispatching method provided by the present application, when N number of STA carries out channel access in the same TDD SP, access Equipment can distribute an allocation field in extension cell for N number of STA, and the purpose AID in allocation field is replaced with by N The group identification for the group that a STA is constituted replaces the AID of each STA by group identification, so that each STA in group The allocation field can be identified by group identification, without individually distributing a distribution for each STA in the group Field come indicate distribution TDD SP improve the efficiency of transmission of scheduling information to save the expense of scheduling information.

Fourth aspect, the application provide a kind of dispatching method, are applied to STA, send this method comprises: receiving access device An extension cell, X structure cell and M scheduling cells, an extension cell, X structure cell and M scheduling cells Time Division Duplex TDD channel access is carried out in period of service SP for dispatching N number of STA, which is one in N number of STA, N >=2, 1≤X < N, 1≤M < N, N, X and M are integer；Wherein, it extends in an allocation field for distributing to N number of STA in cell Group identification including N number of STA group constituted, allocation field are used to indicate the TDD SP that access device distributes to N number of STA；X A structure cell is used to indicate the TDD structure of time slot of TDD SP；M scheduling cells include N number of scheduling indication field, N number of scheduling Indication field and N number of STA are corresponded, and scheduling indication field is used to indicate corresponding STA in the interval TDD that TDD SP includes TDD Time Slot Occupancy bitmap and/or TDD time slot access style；Allocation field is identified from extension cell according to group identification, and TDD SP is determined according to allocation field；The TDD structure of time slot of TDD SP is determined according to X cell structure；According to M scheduling cells In scheduling indication field corresponding with the STA, determine TDD Time Slot Occupancy bitmap of the STA in the interval TDD that TDD SP includes And/or TDD time slot access style.

5th aspect, the application provide a kind of access device, including processing unit and transmission unit；Processing unit control hair The broadcast frame for sending bearing structure cell is sent, instruction structure cell is used to indicate the Time Division Duplex TDD service for distributing to site STA The TDD structure of time slot of phase SP；Wherein, instruction structure cell includes structure of time slot control field and timeslot scheduling field, and not Including structure of time slot time started field and/or distribution block duration field.

Optionally, processing unit, be also used to control transmission unit send bearing structure cell broadcast frame before, by In the case where broadcast frame bearing structure cell, determining structure cell not includes structure of time slot time started field and/or distribution block Duration field.

The technical effect of access device provided by the present application may refer to each reality of above-mentioned first aspect or first aspect The technical effect of existing mode, details are not described herein again.

6th aspect, the application provide a kind of STA, including receiving unit and processing unit；Receiving unit, for connecing Enter the structure cell of equipment transmission, structure cell is carried on broadcast frame, structure cell include structure of time slot control field and Timeslot scheduling field, and do not include structure of time slot time started field and/or distribution block duration field；Processing unit is used for root Determine that access device distributes to the TDD time slot of the Time Division Duplex TDD period of service SP of STA according to the structure cell that receiving unit receives Structure, and when the structure cell does not include structure of time slot time started field and/or distribution block duration field, from connecing The distribution of the extension cell received starts field and obtains the time that TDD structure of time slot comes into effect, and/or point from extension cell The duration for the distribution block that TDD structure of time slot comes into force is obtained with block duration field.

The technical effect of access device provided by the present application may refer to each reality of above-mentioned second aspect or second aspect The technical effect of existing mode, details are not described herein again.

7th aspect, the application provide a kind of access device, including control unit and transmission unit；Processing unit determine to An extension cell, X structure cell and the M scheduling cells sent, an extension cell, X structure cell and M scheduling Cell carries out Time Division Duplex TDD channel access for dispatching N number of site STA in period of service SP, wherein N >=2,1≤X < N, 1 ≤ M < N, N, X and M are integer；Wherein, extending includes N number of STA in an allocation field for distributing to N number of STA in cell The group identification of the group of composition, allocation field are used to indicate the TDD SP for distributing to N number of STA；X structure cell is used to indicate The TDD structure of time slot of TDD SP；M scheduling cells include N number of scheduling indication field, N number of scheduling indication field and N number of STA mono- One is corresponding, and scheduling indication field is used to indicate TDD Time Slot Occupancy bitmap of the corresponding STA in the interval TDD that TDD SP includes And/or TDD time slot access style；Processing unit controls transmission unit and sends extension cell, an X structure cell to N number of STA With M scheduling cells.

The technical effect of access device provided by the present application may refer to each reality of the above-mentioned third aspect or the third aspect The technical effect of existing mode, details are not described herein again.

Eighth aspect, the application provide a kind of STA, including receiving unit and processing unit；Receiving unit, for connecing Enter an extension cell, X structure cell and the M scheduling cells of equipment transmission, an extension cell, X structure cell and M A scheduling cells carry out Time Division Duplex TDD channel access for dispatching N number of STA in period of service SP, which is in N number of STA One, N >=2,1≤X < N, 1≤M < N, N, X and M are integer；Wherein, one that N number of STA is distributed in cell is extended It include the group identification for the group that N number of STA is constituted in allocation field, allocation field is used to indicate access device and distributes to N number of STA TDD SP；X structure cell is used to indicate the TDD structure of time slot of TDD SP；M scheduling cells include N number of scheduling instruction word Section, N number of scheduling indication field and N number of STA are corresponded, and scheduling indication field is used to indicate corresponding STA in TDD SP and includes The interval TDD in TDD Time Slot Occupancy bitmap and/or TDD time slot access style；Processing unit, for according to group identification from Allocation field is identified in extension cell, and TDD SP is determined according to allocation field；Processing unit is also used to according to X cell knot Structure determines the TDD structure of time slot of TDD SP；Processing unit is also used to be referred to according to scheduling corresponding with the STA in M scheduling cells Show field, determines TDD Time Slot Occupancy bitmap and/or TDD time slot access style of the STA in the interval TDD that TDD SP includes.

The technical effect of access device provided by the present application may refer to each reality of above-mentioned fourth aspect or fourth aspect The technical effect of existing mode, details are not described herein again.

Based on above-mentioned first aspect to eighth aspect, in a kind of optional way, structure cell further includes going out the time started Existing field, the time started occur field be used to indicate in structure cell whether comprising structure of time slot time started field and/or point With block duration field；Wherein, when the frame of bearing structure cell is broadcast frame, there is field and is used to indicate structure letter in the time started Structure of time slot time started field and/or distribution block duration field are not included in member；And/or when the frame of bearing structure cell is When unicast frame, there is field and is used to indicate in structure cell comprising structure of time slot time started field and/or distribution in the time started Block duration field.

It include structure of time slot in structure cell when the frame of bearing structure cell is unicast frame by the optional mode Time started field and/or distribution block duration field, so that access device still can reconfigure TDD using unicast frame The TDD structure of time slot of other distribution blocks in SP in addition to first is distributed block, maintains the flexibility of TDD SP configuration.

Optionally, structure of time slot control field includes distribution block duration validity field, distributes block duration validity field The duration for being used to indicate TDD SP indicates that extension cell is for referring to by the SP duration information extended in cell that access device is sent Show the TDD SP for distributing to STA.

Optionally, when access device sends multiple broadcast frames, the interframe space of two neighboring broadcast frame is greater than 1 microsecond.

Optionally, the interframe space of two neighboring broadcast frame is equal to the protection in TDD SP between two adjacent TDD time slots Time span, structure of time slot control field includes guard time length field, when guard time length field is used to indicate protection Between length；Alternatively, broadcast frame includes beacon interval field, beacon interval field indicates the interframe space of two neighboring broadcast frame.

It is kept away using the optional mode by the way that the interframe space of adjacent two broadcast frames to be set greater than to the length of 1 microsecond The multi-path jamming between adjacent two broadcast frames is exempted from.

Based on above-mentioned first aspect to eighth aspect, in a kind of optional mode, X=1.

Optionally, N number of scheduling indication field and N number of STA are corresponded, comprising: N number of scheduling indication field is dispatched at M Configuration sequence in cell and N number of STA putting in order in group are identical, put in order as STA corresponding with group identification Put in order.

Optionally, extension cell further includes communication pattern field, and communication pattern field is used to indicate N number of STA in TDD SP It is interior to be transmitted using TDD channel access mode.

Optionally, structure cell include the interval TDD in TDD SP amount field and/or the interval TDD in include it is more The whether equal field of a TDD time slot.

By the optional way, the integrity degree of the TDD structure of time slot of instruction TDD SP is improved.

Optionally, structure cell include timeslot scheduling starting time field and scheduling cells do not include timeslot scheduling starting when Between field；And/or structure cell includes the interval TDD amount field in bitmap and scheduling cells do not include between TDD in bitmap Every amount field.

By the way that the timeslot scheduling starting time field in scheduling cells and/or the interval the TDD amount field in bitmap are matched It sets in structure cell, and deletes the TDD space-number in timeslot scheduling starting time field and/or bitmap from scheduling cells Field is measured, so that the instruction information relevant to the TDD structure of time slot of TDD SP that structure cell is unified.And after BTI, It, can be to avoid unnecessary information be carried, to save when needing to retransmit the scheduling mode of scheduling cells update STA The expense of scheduling information.

It optionally, further include a group user template field in structure cell, group user template field is used to indicate in N number of STA It is assigned the STA at the same interval TDD in TDD SP.

Optionally, structure cell further includes the subgroup mark for the subgroup that the part STA in N number of STA is constituted, part STA is assigned the same interval TDD in TDD SP, and subgroup identifies part STA for identification.

Access device can be N number of by a group user template (Group User Mask) field or subgroup mark instruction It is assigned to the STA at the same interval TDD in TDD SP in STA, is embodied as the interval TDD of different STA distribution different structures, from And enhance the flexibility of scheduling.

9th aspect, present invention also provides a kind of access devices, comprising: processor, memory, bus and transmitting-receiving Device；The memory, for storing computer executed instructions；The processor is connect by the bus with the memory and transceiver, When access device operation, which executes the computer executed instructions stored in the memory, to realize first aspect And dispatching method described in the various implementations of first aspect, or realize the various realities of the third aspect and the third aspect Dispatching method described in existing mode.

Tenth aspect, present invention also provides a kind of STA, comprising: processor, memory, bus and transceiver；This is deposited Reservoir, for storing computer executed instructions；The processor is connect, as the STA with the memory and transceiver by the bus When operation, which executes the computer executed instructions stored in the memory, to realize second aspect and second aspect Various implementations described in dispatching method, or realize described in the various implementations of fourth aspect and fourth aspect Dispatching method.

Tenth on the one hand, and the application also provides a kind of computer storage medium, is stored in the computer storage medium Instruction, when run on a computer, so that computer executes above-mentioned first aspect, second aspect, the third aspect or the Method described in four aspects.

12nd aspect, present invention also provides a kind of computer program product comprising instruction, when its on computers When operation, so that computer executes above-mentioned first aspect, second aspect, method described in the third aspect or fourth aspect.

13rd aspect, the application provide a kind of communication device, including for executing first aspect, second aspect, third The unit or means of each step of aspect or fourth aspect.

Optionally, which can be chip.

Detailed description of the invention

Fig. 1 is a kind of WLAN (Wireless Local Area for being deployed in millimeter wave frequency band provided by the present application Networks, WLAN) network architecture schematic diagram；

Fig. 2 is the structure of time slot schematic diagram of the beacon interval (Beacon Interval, BI) in provided by the present application；

Fig. 3 is the form schematic diagram of existing extension cell；

Fig. 4 is the form schematic diagram of existing structure cell；

Fig. 5 is the form schematic diagram of existing scheduling cells；

Fig. 6 is a kind of flow diagram of one embodiment of dispatching method provided by the present application；

Fig. 7 is a kind of form schematic diagram one of structure cell provided by the present application；

Fig. 8 is a kind of form schematic diagram two of structure cell provided by the present application；

Fig. 9 is the schematic diagram that TDD channel access is carried out in a kind of same TDD SP provided by the present application；

Figure 10 is a kind of flow diagram of another embodiment of dispatching method provided by the present application；

Figure 11 is a kind of form schematic diagram one for extending cell provided by the present application；

Figure 12 is a kind of form schematic diagram one of scheduling cells provided by the present application；

Figure 13 is a kind of form schematic diagram two for extending cell provided by the present application；

Figure 14 is a kind of form schematic diagram three of structure cell provided by the present application；

Figure 15 is a kind of form schematic diagram two of scheduling cells provided by the present application；

Figure 16 is a kind of form schematic diagram four of structure cell provided by the present application；

Figure 17 is a kind of form schematic diagram five of structure cell provided by the present application；

Figure 18 is that interframe space provided by the present application is that 1 microsecond orients more gigabit (Directional Multi- Gigabit, DMG) beacon frame multi-path jamming schematic diagram；

Figure 19 is the transmission schematic diagram that interframe space provided by the present application is 2 microsecond DMG beacon frames；

Figure 20 A is a kind of structural schematic diagram one of access device provided by the present application；

Figure 20 B is a kind of structural schematic diagram two of access device provided by the present application；

Figure 20 C is a kind of structural schematic diagram three of access device provided by the present application；

Figure 21 A is a kind of structural schematic diagram one of STA provided by the present application；

Figure 21 B is a kind of structural schematic diagram two of STA provided by the present application；

Figure 21 C is a kind of structural schematic diagram three of STA provided by the present application.

Specific embodiment

The terms " system " and " network " are often used interchangeably herein.The terms "and/or" indicates There may be three kinds of relationships, for example, A and/or B, can indicate: individualism A, exist simultaneously A and B, individualism B these three Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".

Dispatching method provided by the present application can be adapted for using time division duplex (time division duplex, TDD) The system of communication protocol.Illustratively, as shown in Figure 1, being a kind of WLAN net for being deployed in millimeter wave frequency band provided by the present application Network configuration diagram, including access device and multiple websites (station, STA).Wherein, access device can be AP, individual base This services set control point (personal basic service set control point, PCP) or other be STA Network insertion service is provided and supports the network equipment of TDD communication protocol, referred to collectively herein as access device.

STA can be millimetre-wave attenuator equipment, for example, in STA the or 802.11ay standard in 802.11ad standard STA.Illustratively, this application involves STA can specifically include support the handheld device of TDD communication protocol, mobile unit, Wearable device calculates equipment, smart phone, smartwatch, tablet computer or the other places for being connected to radio modem Equipment and various forms of user equipmenies (user equipment, UE), mobile station (mobile station, MS) are managed, eventually Hold (terminal) etc..

Dispatching method provided by the present application is the dispatching method for TDD period of service SP (service period, SP), is The technical issues of convenient for describing dispatching method and the solved dispatching method provided by the present application, below between a beacon For the structure of time slot of (beacon interval, BI), the structure of TDD SP is simply introduced.

As shown in Fig. 2, being the structure of time slot schematic diagram of a BI.One BI includes beacon header interval (beacon header Interval, BHI) and data transfer interval (data transfer interval, DTI).Wherein, BHI is broadcast channel, packet The beacon transmission interval (beacon transmission interval, BTI) for sending beacon frame is included, access device is used for Beamforming training phase (association beamforming training, A- are associated with what the STA newly to network was associated BFT), and for sending announcement frame transmitting announcement interval (announcement transmission interval, ATI)。

DTI includes at least one access periods (contention-based access period, CBAP) competition-based With the period of service (service period, SP) of at least one exclusive specified STA, SP refers to that authorizing the one or more of STA passes The period of defeated chance, and be used to STA carry out the SP of TDD channel access to be TDD SP.TDD channel access refers to transceiver Between channel accessed using time-multiplexed mode.Wherein, a SP can directly be divided into the Q identical intervals TDD, It can be divided at least one distribution block, and each distribution block is divided at least one identical interval TDD.Each The interval TDD includes M TDD time slot, and the duration of the M TDD time slot may be identical, it is also possible to and it is different, and the guarantor between TDD time slot The duration for protecting time (guard time, GT) may be identical, it is also possible to different.

Access device is when dispatching TDD SP, it will usually three kinds of cells (information element, IE) is sent, point Schedule element (extended schedule element), TDD structure of time slot cell (TDD slot Wei not extended Structure IE) and TDD timeslot scheduling cell (TDD slot schedule IE).For ease of description, hereinafter will It extends schedule element to be known as extending cell, TDD structure of time slot cell is known as structure cell, TDD timeslot scheduling cell is known as Scheduling cells.Extension cell is used to indicate the TDD SP for distributing to each STA.Structure cell is used to indicate the TDD for distributing to STA The TDD structure of time slot of SP.Scheduling cells are used to indicate specific scheduling mode, such as time slot bitmap, access style etc. that STA is occupied Information.

As shown in figure 3, for the form schematic diagram of existing extension cell, including element ID (element ID) field, length It spends (length) field and distributes to distribution (allocation) field corresponding to each STA that this needs is dispatched. It is assumed that this needs to dispatch n STA, then extending cell includes n allocation field.Each allocation field, which indicates, to be distributed to The TDD SP of corresponding STA, including distribution control (allocation control) field, wave beam forming control (beamforming Control, BF control) field, source association identification (Source association identifier, source AID) field, purpose association identification (destination AID) field, distribution start (allocation start) field, divide With block duration (allocation block duration) field, distribution block number (number of blocks) field and Distribute block period (allocation block period) field.

Wherein, at the beginning of distribution beginning field is used to indicate distributed TDD SP, distribution block duration field instruction The duration of each distribution block in the TDD SP of distribution.Distributing control field includes distribution ID (allocation ID), distribution Type (allocation type) field, pseudo- static (pseudo-static) field, can be truncated (truncatable) field, Expansible (extendable) field, uses low-power consumption single carrier (low power at PCP validity (PCP active) field Single carrier used, LP SC Used) field, TDD applicable SP (TDD applicable) field and reserved (reserved) field.Access device can be by the TDD in corresponding distribution control field applicable SP field to indicate Whether the SP of distribution is TDD SP.

Access device broadcasts an extension cell by beacon frame or announcement frame in each sector, so that this is needed The each STA to be dispatched retrieves purpose AID field in each allocation field, determines mesh after receiving the extension cell AID field in AID be itself AID allocation field, so that it is determined that access device distributes to the TDD SP of oneself, including true The information such as the distribution ID of the fixed TDD SP.

As shown in figure 4, being the form schematic diagram of existing structure cell, including Element ED field, length field, element ID Extend (element ID extension) field, structure of time slot controls (slot structure control) field, time slot Structure time started (slot structure start time) field, distribution block duration field, timeslot scheduling (slot Schedule) field.Wherein, the TDD structure of time slot that structure of time slot time started field indicates structure cell instruction starts to give birth to The time of effect, distribution block duration field indicate the duration for the distribution block that TDD structure of time slot comes into force.Structure of time slot control field refers to The TDD structure of time slot at an interval TDD in TDD SP is shown.Since each interval TDD for including in TDD SP is phase With, accordingly it is also possible to say that structure of time slot control field indicates the TDD structure of time slot for distributing to the TDD SP of STA.Time slot knot Structure control field includes number (the number of TDD slot per TDD for the TDD time slot that each interval TDD is included Interval) field, each GT duration (GT Duration) field for including in each interval TDD, distribution id field, distribution Block duration validity (allocation block duration validity) field and reserved field.Timeslot scheduling field In include the interval TDD in each TDD time slot duration (TDD slot duration) field, indicate the interval TDD In each TDD time slot duration.

There is corresponding structure cell in each of extension cell distribution ID, access device is by beacon frame or leads to It accuses frame and broadcasts structure cell corresponding to each distribution ID in each sector.Or the structure for being sent needs by announcement frame Cell is sent to corresponding STA in a manner of unicast.STA is by distribution ID counter structure cell and extends the distribution word in cell Section, determine the structure cell received instruction is the TDD structure of time slot of which TDD SP.

As shown in figure 5, being the form schematic diagram of existing scheduling cells, including Element ED field, length field, element ID Extended field, timeslot scheduling control (slot schedule control) field, bitmap and access style dispatch (bitmap And access type schedule) field.Wherein, timeslot scheduling control field includes channel aggregation (channel Aggregation) field, frequency bandwidth (Band Width, BW) field, timeslot scheduling time started (Slot Schedule Start Time) field, TDD space-number (number of TDD intervals in the bitmap) field in bitmap, Distribute id field and reserved field.Bitmap and the occupied byte number of access style scheduling field include according in TDD SP The TDD timeslot number M for including in TDD space-number Q and each interval is determined, isWherein symbolExpression takes upwards It is whole.

Each STA of extension cell scheduling has corresponding scheduling cells, indicates STA by proprietary scheduling cells TDD Time Slot Occupancy bitmap and TDD time slot access style in the interval TDD that TDD SP includes, especially by scheduling cells Bitmap and access style scheduling field instruction.Access device by beacon frame or announcement frame in each sector with unicast or The mode of person's broadcast sends scheduling cells corresponding to each STA.

Format based on three kinds of cells as in Figure 3-5 can be seen that exist in the scheduling process of current TDD SP and adjust The problem of spending information redundancy.For example, that extend the distribution beginning field description in cell in allocation field is corresponding TDD SP When first distribution BOB(beginning of block) time of the time of beginning and the TDD SP, distribution start field and specifically include TDD SP and start Low 4 byte of Timing synchronization function (Timing Synchronization Function, the TSF) timer at quarter.Structure cell The instruction of middle structure of time slot time started field is time that TDD structure of time slot comes into effect, i.e., TDD structure of time slot come into force the At the beginning of one distribution block, structure of time slot time started field specifically includes first distribution that TDD structure of time slot comes into force Low 4 byte of TSF timer at the beginning of block.If first distribution block that TDD structure of time slot comes into effect is TDD The first distribution block in SP, then it is identical that distribution, which starts field and the time of structure of time slot time started field instruction,.And work as When the duration of each distribution block is identical, long word when extending the distribution block distributed in block duration field and structure cell in cell The duration information of section instruction is also identical.This has resulted in identical information and has repeatedly been carried in scheduling information to send, and leads Cause the redundancy of scheduling information.

For this purpose, a kind of one embodiment of dispatching method provided by the present application, passes through the frame type of bearing structure cell, spirit Whether structure of time slot time started field and/or distribution block duration field are occurred in control structure cell living, to avoid tying Identical information repeats in structure cell and extension cell, saves the expense of scheduling information, improves the efficiency of transmission of scheduling information.

Specifically, as shown in fig. 6, be a kind of flow diagram of one embodiment of dispatching method provided by the present application, This method may include:

Step 601, access device sends the broadcast frame of bearing structure cell, wherein the structure cell includes structure of time slot Control field and timeslot scheduling field, and do not include structure of time slot time started field and/or distribution block duration field.

Step 602, STA determines that access device distributes to the TDD structure of time slot of the TDD SP of the STA according to structure cell, And when the structure cell does not include structure of time slot time started field and/or distribution block duration field, from receiving The distribution of extension cell start field and obtain time for coming into effect of TDD structure of time slot, and/or the distribution block from extension cell Duration field obtains the duration for the distribution block that TDD structure of time slot comes into force.

In this application, broadcast frame refers to the destination address of frame or reception address is the frame or the frame of broadcast address The frame of destination address is not carried in MAC header, such as orients more gigabit DMG beacon frames or notice (Announce) frame.

Unicast frame refers to destination address or receives the frame that address is unicast address, such as announcement frame.

Access device can determine in structure cell before sending structure cell according to the type of the frame of bearing structure cell It whether include structure of time slot time started field and/or distribution block duration field.By broadcast frame bearing structure cell the case where Under, determining the structure cell not includes structure of time slot time started field and/or distribution block duration field.It is carried by unicast frame In the case where structure cell, determine that the structure cell includes structure of time slot time started field and/or distribution block duration field.

Illustratively, when access device needs to dispatch TDD SP, access device is needed in BTI by beacon frames broadcast The scheduling informations such as the structure cell of transmission, and extension cell, scheduling cells.Since in BTI, access device is to pass through broadcast Frame bearing structure cell, thus access device generate structure cell in do not include structure of time slot time started field and/or point With block duration field.The STA of the structure cell by beacon frame carrying is received, word can be started by the distribution in extension cell Section obtains the time that TDD structure of time slot indicated by the structure cell comes into effect, that is, first distribution block of TDD SP At the beginning of.The duration for the distribution block that TDD structure of time slot comes into force is obtained by distribution block duration field in extension cell.

It is understood that when starting due to eliminating a structure of time slot in the beacon frame of each bearing structure cell Between field and/or distribution block duration field, avoid structure cell and extend cell in equivalent information repetition send, therefore, Reduce the expense of scheduling information.For example, by taking structure of time slot time started field as an example, each beacon frame of bearing structure cell In the case where not including structure of time slot time started field, 4 bytes can be saved.When access device is in order to cover whole sides To and send 64 beacon frames when, 256 bytes can be saved altogether.

After BIT, certain distribution blocks after access device needs to change first in TDD SP distribution block When TDD structure of time slot, access device can send new structure cell announcement frame in a manner of unicast, which needs Indicate the time that TDD structure of time slot comes into effect, that is, need to update TDD structure of time slot these distribution blocks in first At the beginning of distributing block, therefore the structure cell needs to include structure of time slot time started field, is used to refer to the time started.

Optionally, the duration for if desired updating the distribution block of TDD structure of time slot is also changed, then with the side of unicast It also may include distribution block duration field in the structure cell that formula is sent by announcement frame, be used to refer to updated duration.

It is understood that the access device in the application can be supported to use broadcast frame bearing structure cell, can also prop up It holds and uses unicast frame bearing structure cell, one way in which, the embodiment of the present invention can also only be supported to be not construed as limiting.For example, connecing Enter equipment one kind it is possible be achieved in that, access device can determine the knot according to the type of the frame of bearing structure cell Whether structure cell includes structure of time slot time started field and/or distribution block duration field.By broadcast frame bearing structure cell In the case where, the format of the structure cell of generation can be as shown in fig. 7, compared to structure cell as shown in Figure 4, when not including Gap structure time started field and distribution block duration field.

By unicast frame bearing structure cell, such as when access device needs to change first in TDD SP When distributing the TDD structure of time slot of certain distribution blocks after block, structure cell includes structure of time slot control field and time slot tune Field is spent, and including structure of time slot time started field and/or distribution block duration field.Illustratively, it is held when by unicast frame When carrying structure cell, the format of the structure cell of generation can be as shown in figure 4, include structure of time slot time started field and distribution Block duration field.

As can be seen that in this application, access device still can use announcement frame to reconfigure TDD in a manner of unicast The TDD structure of time slot of other distribution blocks in SP in addition to first is distributed block, maintains the flexibility of TDD SP configuration.

Optionally, when passing through announcement frame bearing structure cell, the type of announcement frame can be set to the row of no confirmation The type of dynamic (Action No Ack).I.e. access device sends announcement frame to each STA, and each STA is receiving announcement frame Afterwards, do not have to send any confirmation or response message to access device, to reduce the sending time of scheduling information, save scheduling The expense of information.

It optionally, can also include the time started field occur in structure cell.There is field for referring in the time started Whether show in structure cell comprising structure of time slot time started field and/or distribution block duration field.I.e. when bearing structure cell Frame when being broadcast frame, there is field and is then used to indicate in structure cell not including structure of time slot time started word in the time started Section and/or distribution block duration field；And/or when the frame of bearing structure cell is unicast frame, there is field and is used in the time started It indicates in the structure cell comprising the structure of time slot time started field and/or the distribution block duration field.

Illustratively, in conjunction with Fig. 7, as shown in figure 8, field, which occurs, in the time started can occupy a bit, pass through " 0 " or " 1 " is assigned a value of to be indicated.For example, when the field is assigned a value of 1, when indicating that the structure cell includes that structure of time slot starts Between field and/or distribution block duration field.STA is after receiving structure cell, according to the instruction of the assignment " 1 " of the field, Directly determine time that TDD structure of time slot comes into effect from the structure of time slot time started field in structure cell, and from point The duration for the distribution block that TDD structure of time slot comes into force is determined with block duration field.When the field is assigned a value of 0, indicate that the structure is believed Member does not include structure of time slot time started field and/or distribution block duration field.STA after receiving structure cell, according to The instruction of the assignment " 0 " of the field determines that field is given birth to obtaining TDD structure of time slot the distribution needed since extension cell The time of effect, and the duration for distributing block that TDD structure of time slot comes into force is determined from the distribution block duration field in extension cell.

It optionally, include distribution block duration validity field in the structure of time slot control field of structure cell.In the application In, which can indicate different information by different assignment, including instruction TDD SP when Length is in the time range of multiple continuous BI without limitation, or instruction TDD SP duration by the distribution in extension cell Field indicates.

Illustratively, which can occupy 1 bit, when being assigned a value of " 0 ", instruction The duration of TDD SP is without limitation in the time range of multiple continuous BI, i.e. the duration of TDD SP can be for multiple continuous BI's Duration.When being assigned a value of " 1 ", the duration of instruction TDD SP is indicated by the SP duration information in extension cell.

Wherein, SP duration information includes that the distribution extended in cell starts field, distribution block duration field, distribution block number Information indicated by field and distribution block period field.

In a kind of possible scene, N number of STA may need to carry out TDD channel access, i.e. N in the same TDD SP A STA accesses channel in a time multiplexed manner in the same TDD SP and completes transmission.For example, STA A, STA B, STA C, STA D is communicated in the same TDD SP.By taking the interval TDD 0 of the TDD SP as an example, as shown in figure 9, the interval TDD 0 includes 6 TDD time slots are followed successively by TDD time slot 0-5.For STA A, TDD time slot 0, TDD time slot 1 and TDD time slot 2 are STA A The time slot of data is sent, STA A sends data to STA B in TDD time slot 0, sends data, In to STA C in time slot 1 Data are sent to STA D in TDD time slot 2.TDD time slot 3-5 is the time slot that STA A receives data, and STA A connects in TDD time slot 3 The data that STA B is sent are received, the data that STA C is sent are received in time slot 4, the number that STA D is sent is received in TDD time slot 5 According to.Similarly, for STA B, TDD time slot 0 is the time slot for receiving data, and STA B receives STA A transmission in TDD time slot 0 Data, TDD time slot 3 be send data time slot, STA B in TDD time slot 0 to STA A send data.

In this scene, if access device needs to lead to same TDD SP according to the scheduling flow of existing TDD SP Individual allocation field to be crossed to indicate respectively to STA A, STA B, STA C, STA D, this results in identical information to repeat to send, Cause scheduling information redundancy.For this purpose, the application also provides another embodiment, by replacing the purpose AID in allocation field Group identification (group ID) for the group being made of STA A, STA B, STA C, STA D is replaced every by group identification The AID of a STA, so that each STA in group can identify the allocation field by group identification, without for the group Each STA in group individually distributes an allocation field to indicate the TDD SP of distribution, to save opening for scheduling information Pin.

Specifically, as shown in Figure 10, for a kind of process signal of another embodiment of dispatching method provided by the present application Figure, this method may include:

Step 1001, access device determines an extension cell, X structure cell and M scheduling cells to be sent, should One extension cell, the X structure cell and the M scheduling cells carry out TDD channel for dispatching N number of site STA in SP Access, wherein N >=2,1≤X < N, 1≤M < N, N, X and M are integer.

Step 1002, access device sends an extension cell, X structure cell and M scheduling cells to N number of STA.

Step 1003, according to group identification, the identification from extension cell includes that the group marks to each of N number of STA STA The allocation field of knowledge, and determine that access device distributes to the TDD SP of N number of STA according to the allocation field.

Step 1004, each STA determines the TDD structure of time slot of the TDD SP according to the X cell structure.

Step 1005, for each STA according to scheduling indication field corresponding with the STA in the M scheduling cells, determining should TDD Time Slot Occupancy bitmap and/or TDD time slot access style of the STA in the interval TDD that the TDD SP includes.

In this example, when carrying out channel access in the same TDD SP as N number of STA, access device is in extension cell In for the N number of STA distribute an allocation field, which is used to indicate the TDD SP that access device distributes to N number of STA.Such as It include the group identification for the group that N number of STA is constituted shown in Figure 11, in the allocation field, which can pass through the group Mark identifies the allocation field.Compared to the structure of extension cell shown in Fig. 3, extension cell provided by the present application is enabled to N number of STA that channel access is carried out in the same TDD SP shares an allocation field, reduces allocation field in extension cell Number, to save the expense of scheduling information.

It should be noted that the corresponding TDD SP of the X structure cell, is used to indicate the TDD structure of time slot of TDD SP. Access device can be according to the specific value of the cell length setting X of defined in specific implementation.For example, if defined cell is long Each field needed for TDD structure of time slot of the degree enough comprising one TDD SP of instruction is (for example, structure cell as shown in Figure 4 Included in each field included in each field or structure cell as shown in Figure 7), then settable X=1.If Required field can not be then divided into a part X (X > 1) comprising all required field by defined cell length, point It Bao Han not be sent in X structure cell.

Similarly, M scheduling cells in the application correspond to an allocation field in extension cell, and the numerical value of M is also Access device is configured according to cell length defined during specific implementation.

In this example, M scheduling cells include N number of scheduling indication field, and N number of scheduling indication field and N number of STA are one by one It is corresponding, scheduling indication field be used to indicate TDD Time Slot Occupancy bitmap of the corresponding STA in the interval TDD that TDD SP includes and/ Or TDD time slot access style.

Illustratively, by taking M=1 as an example, the structure of scheduling cells is shown in Fig.12, including N number of scheduling indication field, TDD Time Slot Occupancy position of the STA in the interval TDD that TDD SP includes in each scheduling indication field instruction group Figure and/or TDD time slot access style.That is, a scheduling cells can be passed through using scheduling cells provided by the present application The scheduling mode for indicating N number of STA, without being dispatched one by one by N number of scheduling cells to N number of STA, to reduce needs The number of the scheduling cells of transmission saves the expense of scheduling information.

It is understood that each scheduling cells may include the partial scheduling in N number of scheduling indication field as M > 1 Indication field.That is, a scheduling cells can indicate the occupancy bitmap and TDD time slot of at least one STA in the application Access style.Compared to the scheduling of the existing TDD Time Slot Occupancy bitmap and/or TDD time slot access style for only indicating a STA Cell, using scheduling cells provided by the present application, when each scheduling cells indicate the TDD of two or more STA In the case that gap occupies bitmap and/or TDD time slot access style, the number for needing the scheduling cells sent can be reduced, is saved The expense of scheduling information.

Wherein, configuration sequence and the N number of STA row in group of N number of scheduling indication field in the M scheduling cells Column sequence is identical, and put in order the putting in order of with group identification corresponding STA of the N number of STA in group is identical.

In one example, access device can in advance divide N number of STA that channel access is carried out in same TDD SP For a group, and unique group identification is set for the group.In the group, access device can this be N number of with random alignment The sequence of STA, the sequence that can also access the access device according to N number of STA are arranged.The group identification of each group with The correspondence that puts in order of STA in the group.It so, can basis when access device is when generating this M scheduling indication field STA's corresponding to group identification puts in order, and configures the sequence of N number of scheduling indication field.

Optionally, group identification be also possible to access device for identify progress multi-user's multiple-input and multiple-output (multi- User multiple-input multiple-output, MU-MIMO) transmission group.When N number of STA in the group is one Without MU-MIMO transmission in a TDD SP, but when progress TDD channel access, group mark is also can be used in access device Know the scheduling for carrying out TDD SP.Access device indicates group information by group's standard set (group ID set) cell, including Group identification and N number of STA putting in order in the group.When N number of STA carries out channel access in a TDD SP When, access device can then be applicable in group identification distribution TDD SP, and determine that the arrangement of the corresponding STA of the group identification is suitable Sequence.

In one example, when group identification is the group identification in MU-MIMO, it is based on Figure 11, as shown in figure 13, is expanded Opening up cell can also include communication pattern field, which it is logical to be used to indicate that N number of STA uses in the TDD SP Letter mode.Access device can indicate different communication patterns by different assignment.For example, when the communication pattern field is assigned When value is " 1 ", indicates that N number of STA corresponding to group identification uses TDD transmission mode, TDD letter is carried out in corresponding TDD SP Road access.When the communication pattern field is assigned a value of " 0 ", indicate that N number of STA corresponding to group identification is carried out using MIMO mode Communication.

In one example, the information that the field in structure cell and scheduling cells indicates can be divided into publicly-owned information And Proprietary Information.Since N number of STA carries out channel access in the same TDD SP, it, can be with for this N number of STA The information that will describe the TDD structure of time slot of public TDD SP divides publicly-owned information, and will be for the scheduling mode of each STA (such as TDD Time Slot Occupancy bitmap, TDD time slot access style, channel aggregation, BW etc.) is divided into private information.By publicly-owned information Unified to be indicated by structure cell, private information is indicated by scheduling cells.

For example, the timeslot scheduling control field in scheduling cells (may refer to timeslot scheduling control field as shown in Figure 5 Structure) in, timeslot scheduling time started field is used to indicate the time that scheduling mode indicated by the scheduling cells comes into effect, Specifically include low 4 byte of the TSF timer at the beginning of first interval TDD that scheduling mode comes into force.TDD in bitmap After interval amount field is used to indicate at the time of following closely indicated by timeslot scheduling time started field, between the TDD in bitmap Every quantity.

When that the interval the TDD amount field i.e. in time slot schedule start time field and bitmap indicates is the TDD of TDD SP Gap structure.At least one field configuration in the two fields can so be carried out to unified instruction into structure cell.Tie Structure cell includes timeslot scheduling starting time field and scheduling cells do not include timeslot scheduling starting time field；And/or structure Cell includes the interval the TDD amount field in bitmap and scheduling cells do not include the interval the TDD amount field in bitmap.

Illustratively, the interval the TDD quantity field configuration in timeslot scheduling time started field and bitmap to structure is believed In member, and after deleting in scheduling cells, the format of structure cell can be as shown in figure 14, and the format of scheduling cells can be such as figure Shown in 15.

It is understood that by will be between the timeslot scheduling starting time field in scheduling cells and/or the TDD in bitmap It is configured in structure cell every amount field, and deletes timeslot scheduling starting time field and/or bitmap from scheduling cells In the interval TDD amount field so that relevant to the TDD structure of time slot of the TDD SP information of instruction that structure cell is unified.And It, can be unnecessary to avoid carrying when needing to retransmit the scheduling mode of scheduling cells update STA and after BTI Information, to save the expense of scheduling information.

Optionally, in order to which more completely the TDD structure of time slot of instruction TDD SP is gone back in structure cell as shown in figure 14 May include the interval TDD in TDD SP amount field and/or the interval TDD in include the whether equal word of multiple TDD time slots Section.Wherein, the amount field at the interval TDD in TDD SP is used to indicate the quantity at the interval TDD in TDD SP, when TDD SP weight When periodically occurring again, the quantity at the interval TDD in each TDD SP is indicated.The multiple TDD time slots for including in the interval TDD are No equal field is used to indicate multiple TDD time slots length whether having the same in the interval TDD.When the equal field of TDD time slot When indicating that multiple TDD time slots in the interval TDD have different length, the duration of each TDD time slot is by timeslot scheduling field Instruction.

It in one example, may be not in the TDD when N number of STA carries out TDD channel access in the same TDD SP TDD channel access is carried out in the same interval TDD in SP.So, when access device is needed the part STA in N number of STA points When being fitted on progress TDD channel access in the same interval TDD, access device can pass through a group user template (group user Mask) field or subgroup mark indicate the STA that the same interval TDD in TDD SP is assigned in N number of STA, are embodied as not The interval TDD of same STA distribution different structure, to enhance the flexibility of scheduling.

It illustratively, as shown in figure 16, further include a group user template field in the structure of time slot control field of structure cell, This group of user template field can specifically indicate a message bit pattern, N corresponding to the N bits and group identification in bitmap A STA is corresponded, and the phase phase that puts in order corresponding with group identification that puts in order of STA corresponding to each bit Together.For example, first in the corresponding N number of STA group of first bit (least significant bit) of group user template field STA, corresponding second STA of second bit, and so on.

Alternatively, further include the subgroup mark of subgroup in the structure of time slot control field of structure cell as shown in figure 17, The subgroup is made of the part STA in N number of, this part STA is the STA for being assigned to the same interval TDD of the TDD SP.

Optionally, since beacon frame is that oriented approach is sent, when N number of STA is located at different J, (1 >=J >=N, J are whole Number) a sector when, the tune that is sent when access device passes through beacon frame information scheduling cells, in each sector in J sector Degree cell may include scheduling indication field corresponding with the STA being located in the sector, not include the STA in other sectors Corresponding scheduling indication field.To further save the expense of the scheduling information sent in each sector.

For example, STA A and STA B is in sector 1, then when access device sends scheduling cells by sector 1, scheduling letter The corresponding scheduling indication field of STA A and the corresponding scheduling indication field of STA B can be only included in member.TA C and STA D exist In sector 1, then the corresponding tune of STA C can be only included in scheduling cells when access device sends scheduling cells by sector 1 Spend indication field and the corresponding scheduling indication field of STA D.

It, can also be with it should be noted that the process in two embodiments as shown in Figure 6 and Figure 7 can be implemented separately It is implemented in combination with.When two embodiments as shown in Figure 6 and Figure 7 are implemented in combination with, opening for scheduling information can be further reduced Pin.

In addition, since the interframe space of current broadcast frame is generally 1 microsecond, and with basic service set (Basic Service Set, BSS) coverage area expand, for STA when receiving broadcast frame, the multidiameter delay of previous broadcast frame can be under One broadcast frame interferes.For example, as shown in figure 18, interframe space is the multi-path jamming schematic diagram of 1 microsecond DMG beacon frame. When access device sends DMG beacon frame 1, the multidiameter delay of DMG beacon frame 1 causes STA to receive DMG beacon frame 1 and DMG beacon There is overlapping in the time of frame 2, to cause DMG beacon frame 1 and the mutual interference of DMG beacon frame 2, influences information reception.

For this purpose, in this application, access device carrying scheduling information by broadcast frame, (including believe by extension cell, structure Member and scheduling cells), and when the multiple broadcast frames of transmission, the interframe space of two neighboring broadcast frame is greater than 1 microsecond.Specifically, Access device can set the interframe space of two neighboring broadcast frame to the protection in TDD SP between two adjacent TDD time slots Time span.STA can be by the guard time length field in structure cell in structure of time slot control field, when determining protection Between length, so that it is determined that the interframe space of two neighboring broadcast frame.Alternatively, access device can also increase beacon in broadcast frame Interval field is used to refer to the interframe space of two neighboring broadcast frame.Wherein, beacon interval field is specifically used for carrying shortwave beam Figuration interframe space (short beamforming inter frame space, SBIFS) value, access device can be by SBIFS Value is set as multiple grades, such as 1 microsecond, 2 microseconds, 3 microseconds etc..When access device sends multiple broadcast frames, then can select Select the grade greater than 1 microsecond.

Optionally, the value of SBIFS can be identical as the value of the GT2 in Fig. 2.This is because GT2 is that access device is used When continuously sending data to multiple STA, needed for the transmission sector from the transmission sector switch of a STA to another STA Guard time, with using more sectors with scanning mode send multiple DMG beacon frames the case where it is identical.

It illustratively, as shown in figure 19, be interframe space is 2 microsecond DMG beacon frame information schematic diagrames.By by SBIFS Value increases to 2 microseconds, even if DMG beacon frame 1 generates multidiameter delay, nor affects on the reception to DMG beacon frame 2.

It is above-mentioned that mainly scheme provided by the present application is described from the angle of interaction between each network element.It is understood that , in order to realize the above functions, it comprises execute each corresponding hardware knot of function for each network element, such as access device etc. Structure and/or software module.Those skilled in the art should be readily appreciated that, described in conjunction with the examples disclosed in this document Each exemplary unit and algorithm steps, the application can be realized with the combining form of hardware or hardware and computer software.Certain A function is executed in a manner of hardware or computer software driving hardware actually, depending on technical solution specific application and Design constraint.Professional technician can realize described function using distinct methods to each specific application Can, but this realization is it is not considered that exceed scope of the present application.

The application can carry out the division of functional module according to above method example to access device etc., for example, can be right The each functional module of each function division is answered, two or more functions can also be integrated in a processing module. Above-mentioned integrated module both can take the form of hardware realization, can also be realized in the form of software function module.It needs Illustrate, is schematical, only a kind of logical function partition to the division of module in the application, it in actual implementation can be with There is other division mode.

In the case where each function division of use correspondence each functional module, Figure 20 A shows institute in above-described embodiment A kind of possible structural schematic diagram for the access device being related to, access device include: processing unit 2001 and transmission unit 2002.Processing unit 2001 is for supporting access device to execute the step 601 in Fig. 6, the step 1001-1002 in Figure 10；Hair Send unit 2002 for supporting access device to execute the step 601 in Fig. 6, the step 1002 in Figure 10.Wherein, the above method is real All related contents for applying each step that example is related to can quote the function description of corresponding function module, no longer superfluous herein It states.

Using integrated unit, Figure 20 B shows one of access device involved in above-described embodiment The possible structural schematic diagram of kind.Access device includes: processing module 2011 and communication module 2012.Processing module 2011 for pair The movement of access device carries out control management, for example, processing module 2011 is for supporting access device to execute the step in Fig. 6 Step 1001-1002 in 601, Figure 10, and/or other processes for techniques described herein.Communication module 2012 is used In the communication for supporting access device and other network entities.Access device can also include memory module 2013, connect for storing Enter the program code and data of equipment.

Wherein, processing module 2011 can be processor or controller, such as can be central processing unit (Central Processing Unit, CPU), general processor, digital signal processor (Digital Signal Processor, DSP), Specific integrated circuit (Application-Specific Integrated Circuit, ASIC), field programmable gate array It is (Field Programmable Gate Array, FPGA) or other programmable logic device, transistor logic, hard Part component or any combination thereof.It may be implemented or execute to combine and various illustratively patrol described in present disclosure Collect box, module and circuit.The processor is also possible to realize the combination of computing function, such as includes one or more micro- places Manage device combination, DSP and the combination of microprocessor etc..Communication module 2012 can be transceiver, transmission circuit or communication interface Deng.Memory module 2013 can be memory.

When processing module 2011 is processor, communication module 2012 is transceiver, when memory module 2013 is memory, this Access device involved in applying can be access device shown in Figure 20 C.

Refering to shown in Figure 20 C, which includes: processor 2021, transceiver 2022, memory 2023 and bus 2024.Wherein, transceiver 2022, processor 2021 and memory 2023 are connected with each other by bus 2024；Bus 2024 can To be Peripheral Component Interconnect standard (Peripheral Component Interconnect, PCI) bus or extension industrial standard Structure (Extended Industry Standard Architecture, EISA) bus etc..The bus can be divided into address Bus, data/address bus, control bus etc..Only to be indicated with a thick line in Figure 20 C, it is not intended that only one convenient for indicating Root bus or a type of bus.

In the case where each function division of use correspondence each functional module, Figure 21 A shows institute in above-described embodiment A kind of possible structural schematic diagram for the STA being related to, STA include: processing unit 2101 and receiving unit 2102.Processing unit 2101 for supporting STA to execute the step 602 in Fig. 6, the step 1003-1005 in Figure 10；Receiving unit 2102 is for supporting STA executes the step 601 in Fig. 6, the step 1002 in Figure 10.Wherein, each step that above method embodiment is related to owns Related content can quote the function description of corresponding function module, and details are not described herein.

Using integrated unit, Figure 21 B shows a kind of possibility of STA involved in above-described embodiment Structural schematic diagram.STA includes: processing module 2111 and communication module 2112.Processing module 2111 be used for the movement of STA into Row control management, for example, processing module 2111 is used to that STA to be supported to execute the step 602 in Fig. 6, the step 1002- in Figure 10 1005, and/or for other processes of techniques described herein.Communication module 2112 is real for supporting STA and other networks The communication of body.STA can also include memory module 2113, for storing the program code and data of STA.

Wherein, processing module 2111 can be processor or controller, such as can be CPU, general processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic, hardware component or any combination thereof.It can be with It realizes or executes and combine various illustrative logic blocks, module and circuit described in present disclosure.The processing Device is also possible to realize the combination of computing function, such as combines comprising one or more microprocessors, the group of DSP and microprocessor Close etc..Communication module 2112 can be transceiver, transmission circuit or communication interface etc..Memory module 2113 can be storage Device.

When processing module 2111 is processor, communication module 2112 is transceiver, when memory module 2113 is memory, this STA involved in applying can be STA shown in Figure 21 C.

Refering to shown in Figure 21 C, which includes: processor 2121, transceiver 2122, memory 2123 and bus 2124. Wherein, transceiver 2122, processor 2121 and memory 2123 are connected with each other by bus 2124；Bus 2124 can be Pci bus or eisa bus etc..The bus can be divided into address bus, data/address bus, control bus etc..For convenient for indicate, It is only indicated with a thick line in Figure 21 C, it is not intended that an only bus or a type of bus.

The application also provides a kind of communication device, including each performed by above-mentioned access device or STA for executing The unit or means of step.The communication device can be chip.In the specific implementation, the application also provides a kind of computer storage Jie Matter, wherein the computer storage medium can be stored with program, which may include dispatching method provided by the present application when executing Step some or all of in each embodiment.The storage medium can be magnetic disk, CD, read-only memory (read- Only memory, abbreviation ROM) or random access memory (random access memory, abbreviation RAM) etc..

Present invention also provides a kind of computer program products comprising instruction, when run on a computer, so that Computer some or all of executes in each embodiment of above-mentioned dispatching method provided by the present application step.

It is required that those skilled in the art can be understood that the technology in the embodiment of the present application can add by software The mode of general hardware platform realize.Based on this understanding, the technical solution in the embodiment of the present application substantially or Say that the part that contributes to existing technology can be embodied in the form of software products, which can deposit Storage is in storage medium, such as ROM/RAM, magnetic disk, CD, including some instructions are used so that computer equipment (can be with It is personal computer, server or the network equipment etc.) execute certain part institutes of each embodiment of the application or embodiment The method stated.

Same and similar part may refer to each other between each embodiment in this specification.Especially for centralized control For the embodiment of device, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to side Explanation in method embodiment.

Above-described the application embodiment does not constitute the restriction to the application protection scope.

Claims

1. a kind of dispatching method is applied to access device, which is characterized in that the described method includes:

The broadcast frame of bearing structure cell is sent, the structure cell is used to indicate the Time Division Duplex TDD clothes for distributing to site STA The TDD structure of time slot of business phase SP；

Wherein, the structure cell includes structure of time slot control field and timeslot scheduling field, and does not include that structure of time slot is opened The time field that begins and/or distribution block duration field.

2. according to method described in right 1, which is characterized in that described before the broadcast frame for sending bearing structure cell Method further include:

By broadcast frame bearing structure cell, determining the structure cell not includes structure of time slot time started field And/or distribution block duration field.

3. method according to claim 1 or 2, which is characterized in that the structure cell further includes the time started word occur There is field and are used to indicate in the structure cell not comprising the structure of time slot time started field in section, the time started And/or the distribution block duration field.

4. method according to claim 1-3, which is characterized in that the structure of time slot control field includes distribution Block duration validity field, the duration that the distribution block duration validity field is used to indicate the TDD SP are set by the access The SP duration information instruction in extension cell that preparation is sent, the extension cell are used to indicate the TDD for distributing to the STA SP。

5. method according to claim 1-4, which is characterized in that when access device transmission is multiple described wide When broadcasting frame, the interframe space of two neighboring broadcast frame is greater than 1 microsecond.

6. according to the method described in claim 5, it is characterized in that, the interframe space of the two neighboring broadcast frame is equal to described Guard time length in TDD SP between two adjacent TDD time slots, the structure of time slot control field include that guard time is long Field is spent, the guard time length field is used to indicate the guard time length；

Alternatively, the broadcast frame includes beacon interval field, the beacon interval field indicates the two neighboring broadcast frame Interframe space.

7. a kind of dispatching method is applied to site STA, which is characterized in that the described method includes:

The structure cell that access device is sent is received, the structure cell is carried on broadcast frame, when the structure cell includes Gap structure control field and timeslot scheduling field, and do not include structure of time slot time started field and/or distribution block when long word Section；

When determining that the access device distributes to the TDD of Time Division Duplex TDD period of service SP of the STA according to the structure cell Gap structure；

When the structure cell does not include structure of time slot time started field and/or distribution block duration field, from reception To the distribution of extension cell start field and obtain the time that the TDD structure of time slot comes into effect, and/or from extension letter The distribution block duration field of member obtains the duration for the distribution block that the TDD structure of time slot comes into force.

8. the method according to the description of claim 7 is characterized in that the structure cell further includes the time started field occur, The time started occur field be used to indicate in the structure cell do not include the structure of time slot time started field and/or The distribution block duration field.

9. according to the method described in claim 8, it is characterized in that, the structure of time slot control field include distribution block when with Effect property field, what the duration that the distribution block duration validity field is used to indicate the TDD SP was sent by the access device The SP duration information instruction in cell is extended, the extension cell is used to indicate the TDD SP for distributing to the STA.

10. according to the described in any item methods of claim 7-9, which is characterized in that receiving the more of the access device transmission When a broadcast frame, the interframe space of the two neighboring broadcast frame be equal in the TDD SP two adjacent TDD time slots it Between guard time length, the structure of time slot control field includes guard time length field, the guard time length word Section is used to indicate the guard time length；

11. a kind of dispatching method is applied to access device, which is characterized in that the described method includes:

Determine an extension cell, X structure cell and M scheduling cells to be sent, one extension cell, the X A structure cell and the M scheduling cells are used to dispatch N number of site STA carries out Time Division Duplex TDD channel in period of service SP Access, wherein N >=2,1≤X < N, 1≤M < N, N, X and M are integer；

Wherein, the group constituted in an allocation field of N number of STA including N number of STA is distributed in the extension cell The group identification of group, the allocation field are used to indicate the TDD SP that the access device distributes to N number of STA；

The X structure cell is used to indicate the TDD structure of time slot of the TDD SP；

The M scheduling cells include N number of scheduling indication field, and N number of scheduling indication field and N number of STA mono- are a pair of It answers, the scheduling indication field is used to indicate TDD Time Slot Occupancy of the corresponding STA in the interval TDD that the TDD SP includes Bitmap and/or TDD time slot access style；

One extension cell, the X structure cell and the M scheduling cells are sent to N number of STA.

12. according to the method for claim 11, which is characterized in that X=1.

13. method according to claim 11 or 12, which is characterized in that N number of scheduling indication field with it is described N number of STA is corresponded, comprising:

Configuration sequence and the N number of STA of the N number of scheduling indication field in the M scheduling cells are in the group Identical, the putting in order for STA corresponding with the group identification that put in order that put in order.

14. the described in any item methods of 1-13 according to claim 1, which is characterized in that the extension cell further includes communication mould Formula field, the communication pattern field are used to indicate N number of STA in the TDD SP using the channel access side TDD Formula transmission.

15. the described in any item methods of 1-14 according to claim 1, which is characterized in that the structure cell includes the TDD The whether equal field of multiple TDD time slots for including in the amount field at the interval TDD in SP and/or the interval TDD.

16. the described in any item methods of 1-15 according to claim 1, which is characterized in that the structure cell includes timeslot scheduling Starting time field and the scheduling cells do not include the timeslot scheduling starting time field；And/or the structure cell packet Including the interval TDD amount field and the scheduling cells in bitmap does not include the interval the TDD amount field in the bitmap.

17. the described in any item methods of 1-16 according to claim 1, which is characterized in that further include a group use in the structure cell Family template field, described group of user template field, which is used to indicate in N number of STA, is assigned to same TDD in the TDD SP The STA at interval.

18. the described in any item methods of 1-16 according to claim 1, which is characterized in that the structure cell further includes described N number of The subgroup mark for the subgroup that part STA in STA is constituted, the part STA are assigned the same TDD in the TDD SP Interval, the subgroup identify the part STA for identification.

19. a kind of dispatching method is applied to site STA, which is characterized in that the described method includes:

An extension cell, X structure cell and the M scheduling cells that reception access device is sent, one extension cell, The X structure cell and the M scheduling cells are used to dispatch N number of STA carries out Time Division Duplex TDD channel in period of service SP Access, the STA are that one, N >=2,1≤X < N, 1≤M < N, N, X and M in N number of STA are integer；

The allocation field is identified from the extension cell according to the group identification, and institute is determined according to the allocation field State TDD SP；

The TDD structure of time slot of the TDD SP is determined according to the X cell structure；

According to scheduling indication field corresponding with the STA in the M scheduling cells, determine the STA in the TDD SP The TDD Time Slot Occupancy bitmap and/or TDD time slot access style in the interval TDD for including.

20. according to the method for claim 19, which is characterized in that X=1.

21. method described in 9 or 20 according to claim 1, which is characterized in that N number of scheduling indication field with it is described N number of STA is corresponded, comprising:

22. the described in any item methods of 9-21 according to claim 1, which is characterized in that the extension cell further includes communication mould Formula field, the communication pattern field are used to indicate N number of STA in the TDD SP using the channel access side TDD Formula transmission.

23. the described in any item methods of 9-22 according to claim 1, which is characterized in that the structure cell includes the TDD The whether equal field of multiple TDD time slots for including in the amount field at the interval TDD in SP and/or the interval TDD.

24. the described in any item methods of 9-23 according to claim 1, which is characterized in that the structure cell includes timeslot scheduling Starting time field and the scheduling cells do not include the timeslot scheduling starting time field；And/or the structure cell packet Including the interval TDD amount field and the scheduling cells in bitmap does not include the interval the TDD amount field in the bitmap.

25. the described in any item methods of 9-24 according to claim 1, which is characterized in that further include a group use in the structure cell Family template field, described group of user template field, which is used to indicate in N number of STA, is assigned to same TDD in the TDD SP The STA at interval.

26. the described in any item methods of 9-24 according to claim 1, which is characterized in that the structure cell further includes described N number of The subgroup mark for the subgroup that part STA in STA is constituted, the part STA are assigned the same TDD in the TDD SP Interval, the subgroup identify the part STA for identification.

27. a kind of access device, which is characterized in that including processing unit and transmission unit；

The processing unit controls the broadcast frame that the transmission unit sends bearing structure cell, and the structure cell is used to indicate Distribute to the TDD structure of time slot of the Time Division Duplex TDD period of service SP of site STA；

28. access device according to claim 27, which is characterized in that

The processing unit is also used to before the broadcast frame for controlling the transmission unit transmission bearing structure cell, by wide In the case where broadcasting frame bearing structure cell, determining the structure cell not includes structure of time slot time started field and/or distribution Block duration field.

29. the access device according to claim 27 or 28, which is characterized in that the structure cell further includes the time started There is field, the time started field occurs and is used to indicate in the structure cell not comprising the structure of time slot time started Field and/or the distribution block duration field.

30. according to the described in any item access devices of claim 27-29, which is characterized in that the structure of time slot control field Including distributing block duration validity field, the distribution block duration validity field is used to indicate the duration of the TDD SP by institute The SP duration information instruction in the extension cell of transmission unit transmission is stated, the extension cell, which is used to indicate, distributes to the STA The TDD SP.

31. according to the described in any item access devices of claim 27-30, which is characterized in that when the processing unit controls institute When stating the transmission unit multiple broadcast frames of transmission, the interframe space of two neighboring broadcast frame is greater than 1 microsecond.

32. access device according to claim 31, which is characterized in that the interframe space etc. of the two neighboring broadcast frame Guard time length in the TDD SP between two adjacent TDD time slots, the structure of time slot control field include protection Time span field, the guard time length field are used to indicate the guard time length；

33. a kind of site STA, which is characterized in that including receiving unit and processing unit；

The receiving unit, for receiving the structure cell of access device transmission, the structure cell is carried on broadcast frame, institute Stating structure cell includes structure of time slot control field and timeslot scheduling field, and does not include structure of time slot time started field And/or distribution block duration field；

The processing unit, the structure cell for being received according to the receiving unit determine the access device distribution To the TDD structure of time slot of the Time Division Duplex TDD period of service SP of the STA；

The processing unit is also used to when the structure cell does not include structure of time slot time started field and/or distribution block In the case of long field, since the distribution of the extension cell received field obtain that the TDD structure of time slot comes into effect when Between, and/or from the distribution block duration field of the extension cell obtain the duration for distributing block that the TDD structure of time slot comes into force.

34. STA according to claim 33, which is characterized in that the structure cell further includes the time started field occur, The time started occur field be used to indicate in the structure cell do not include the structure of time slot time started field and/or The distribution block duration field.

35. STA according to claim 34, which is characterized in that the structure of time slot control field includes distribution block duration Validity field, the duration that the distribution block duration validity field is used to indicate the TDD SP are sent by the access device Extension cell in the instruction of SP duration information, the extension cell is used to indicate the TDD SP for distributing to the STA.

36. according to the described in any item STA of claim 33-35, which is characterized in that receive the access in the receiving unit When multiple broadcast frames that equipment is sent, the interframe space of the two neighboring broadcast frame is equal to two phases in the TDD SP Guard time length between adjacent TDD time slot, the structure of time slot control field include guard time length field, the protection Time span field is used to indicate the guard time length；

37. a kind of access device, which is characterized in that including processing unit and transmission unit；

Processing unit determines an extension cell, X structure cell and M scheduling cells to be sent, one extension letter First, the described X structure cell and the M scheduling cells are used to dispatch N number of site STA carries out time division duplex in period of service SP TDD channel access, wherein N >=2,1≤X < N, 1≤M < N, N, X and M are integer；

Wherein, the group constituted in an allocation field of N number of STA including N number of STA is distributed in the extension cell The group identification of group, the allocation field are used to indicate the TDD SP for distributing to N number of STA；

The processing unit controls the transmission unit, for sending one extension cell, the X to N number of STA Structure cell and the M scheduling cells.

38. the access device according to claim 37, which is characterized in that X=1.

39. the method according to claim 37 or 38, which is characterized in that N number of scheduling indication field with it is described N number of STA is corresponded, comprising:

40. according to the described in any item access devices of claim 37-39, which is characterized in that the extension cell further includes leading to Believe that pattern field, the communication pattern field are used to indicate N number of STA and are connect in the TDD SP using the TDD channel Enter mode to transmit.

41. according to the described in any item access devices of claim 37-40, which is characterized in that the structure cell includes described The whether equal word of multiple TDD time slots for including in the amount field at the interval TDD in TDD SP and/or the interval TDD Section.

42. according to the described in any item access devices of claim 37-41, which is characterized in that the structure cell includes time slot Schedule Start Time field and the scheduling cells do not include the timeslot scheduling starting time field；And/or the structure letter Member includes the interval the TDD amount field in bitmap and the scheduling cells do not include the interval the TDD amount field in the bitmap.

43. according to the described in any item access devices of claim 37-42, which is characterized in that further include in the structure cell Group user template field, described group of user template field be used to indicate in N number of STA be assigned to it is same in the TDD SP The STA at the interval TDD.

44. according to the described in any item access devices of claim 37-42, which is characterized in that the structure cell further includes institute The subgroup mark for the subgroup that the part STA in N number of STA is constituted is stated, the part STA is assigned same in the TDD SP One interval TDD, the subgroup identify the part STA for identification.

45. a kind of site STA, which is characterized in that including receiving unit and processing unit；

The receiving unit, for receiving an extension cell, X structure cell and the M scheduling cells of access device transmission, One extension cell, the X structure cell and the M scheduling cells for dispatch N number of STA in period of service SP into Row Time Division Duplex TDD channel access, the STA be N number of STA in one, N >=2,1≤X < N, 1≤M < N, N, X with And M is integer；

The processing unit, for identifying the allocation field from the extension cell according to the group identification, and according to The allocation field determines the TDD SP；

The processing unit is also used to determine the TDD structure of time slot of the TDD SP according to the X cell structure；

The processing unit is also used to be determined according to scheduling indication field corresponding with the STA in the M scheduling cells TDD Time Slot Occupancy bitmap and/or TDD time slot access style of the STA in the interval TDD that the TDD SP includes.

46. STA according to claim 45, which is characterized in that X=1.

47. the STA according to claim 45 or 46, which is characterized in that N number of scheduling indication field and N number of STA It corresponds, comprising:

48. according to the described in any item STA of claim 45-47, which is characterized in that the extension cell further includes communication pattern Field, the communication pattern field are used to indicate N number of STA in the TDD SP using the TDD channel access mode Transmission.

49. according to the described in any item STA of claim 45-48, which is characterized in that the structure cell includes the TDD SP The whether equal field of multiple TDD time slots for including in the amount field at the interior interval TDD and/or the interval TDD.

50. according to the described in any item STA of claim 45-49, which is characterized in that the structure cell includes that timeslot scheduling rises Begin time field and scheduling cells do not include the timeslot scheduling starting time field；And/or the structure cell includes The interval TDD amount field and the scheduling cells in bitmap do not include the interval the TDD amount field in the bitmap.

51. according to the described in any item STA of claim 45-50, which is characterized in that further include a group user in the structure cell Template field, described group of user template field, which is used to indicate in N number of STA, to be assigned in the TDD SP between same TDD Every STA.

52. according to the described in any item STA of claim 45-50, which is characterized in that the structure cell further includes described N number of The subgroup mark for the subgroup that part STA in STA is constituted, the part STA are assigned the same TDD in the TDD SP Interval, the subgroup identify the part STA for identification.

53. a kind of computer storage medium, which is characterized in that instruction is stored in the computer storage medium, when the finger When order is run on computers, so that the computer executes dispatching method as claimed in any one of claims 1 to 6 or holds Row such as the described in any item dispatching methods of claim 11-18.

54. a kind of computer storage medium, which is characterized in that instruction is stored in the computer storage medium, when the finger When order is run on computers, so that the computer executes such as the described in any item dispatching methods of claim 7-10 or holds Row such as the described in any item dispatching methods of claim 19-26.