CN106487490B - The method and apparatus of trigger frame transmission in a kind of WLAN - Google Patents

The method and apparatus of trigger frame transmission in a kind of WLAN Download PDF

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Publication number
CN106487490B
CN106487490B CN201510559369.0A CN201510559369A CN106487490B CN 106487490 B CN106487490 B CN 106487490B CN 201510559369 A CN201510559369 A CN 201510559369A CN 106487490 B CN106487490 B CN 106487490B
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trigger frame
mac function
independent
information
public
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CN106487490A (en
Inventor
于健
杨讯
郭宇宸
林梅露
张佳胤
淦明
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/0406Wireless resource allocation involving control information exchange between nodes
    • H04W72/042Wireless resource allocation involving control information exchange between nodes in downlink direction of a wireless link, i.e. towards terminal

Abstract

The invention discloses the methods that trigger frame in a kind of WLAN is transmitted, this method comprises: generating trigger frame, the trigger frame includes trigger frame type identification, the trigger frame type identification includes: the trigger frame for not carrying Media access contorl MAC function, carries the trigger frame of single MAC function or carry the trigger frame of multiple MAC functions for distinguishing different types of trigger frame, the different types of trigger frame.The present invention also provides the devices of corresponding trigger frame transmission, design by the above-mentioned means, carrying out unified frame format to different types of trigger frame, simplify the structure of trigger frame, reduce the complexity of receiving station.

Description

The method and apparatus of trigger frame transmission in a kind of WLAN
Technical field
The present invention relates to field of communication technology, the method and apparatus of trigger frame transmission in especially a kind of WLAN.
Background technique
Currently, IEEE (English: Institute of Electrical and Electronic Engineers, Chinese: Institute of Electrical and Electronics Engineers) tissue formulating next generation wlan (English: Wireless Local Area Network, Chinese: WLAN) standard 802.11ax.802.11ax will introduce OFDMA (English: Orthogonal Frequency Division Multiple Access, Chinese: orthogonal frequency division multiple access) technology, OFDMA technology can support AP (English: Access Point, Chinese: access point) multi-user transmission is carried out with multiple STA (English: Station, Chinese: website) simultaneously, Thus it needs to define trigger frame, trigger frame is sent by AP, carries out resource instruction for transmitting uplink multi-users.
Draft standard, which has determined to adopt shown in Fig. 1 a, triggers frame structure.The trigger frame belongs to MAC (English: Media Access Control, Chinese: Media Access Controlled) frame, including mac frame head (MAC header), frame (Frame body) And Frame Check Sequence fields, wherein frame can carry different MAC functions, such as: Channel Detection, block confirmation request BAR Or multi-user requests to send MU-RTS.Specifically, frame includes public domain and website domain one by one, public domain include all STA all The resource to be read instruction, website domain includes that each STA needs to read respective resource instruction one by one.
Disadvantage of the prior art is that the public domain of the frame of trigger frame includes that physical layer function information and MAC layer function are believed Breath, physical layer function information and MAC layer functional information are mixed, and are unfavorable for website reception, furthermore existing triggering frame structure Only definition carries the trigger frame of a MAC function, does not define the trigger frame for carrying multiple MAC functions.
Summary of the invention
In view of this, the main object of the present invention is to provide the method and dress of trigger frame transmission in a kind of WLAN It sets, for solving the physical layer function information of frame and asking of mixing of MAC layer functional information in existing triggering frame structure The problem of inscribing, and only definition carries the trigger frame of a MAC function, not defining the trigger frame for carrying multiple MAC functions.
In a first aspect, the embodiment of the invention provides the methods that trigger frame in a kind of WLAN is transmitted, comprising:
Trigger frame is generated, the trigger frame includes trigger frame type identification, and the trigger frame type identification is for distinguishing not The trigger frame of same type, the different types of trigger frame include: the trigger frame for not carrying Media access contorl MAC function, take Trigger frame with single MAC function or the trigger frame for carrying multiple MAC functions;
Send the trigger frame.
With reference to first aspect, in a first possible implementation of that first aspect, the trigger frame includes MAC function number Target is known, and the MAC function number mark is used to indicate the MAC function number that the trigger frame carries.
With reference to first aspect or first aspect the first possible implementation, in second of first aspect possible reality In existing mode, the trigger frame for carrying single MAC function includes triggering information field and a MAC function field;
The triggering information field includes triggering information public field and the triggering independent field of information, the MAC function word Section includes MAC function public field and the independent field of MAC function;
The triggering information public field is located at before the MAC function public field, the independent field of the triggering information Before the independent field of MAC function, the triggering information public field is located at before the independent field of the triggering information.
Second of possible implementation with reference to first aspect, in first aspect in the third possible implementation, institute It states in the trigger frame for carrying single MAC function, the triggering information public field is used to indicate one or more station transmission numbers According to the public information of packet, the triggering information public field includes at least one following parameter: length, the protection interval of data packet GI, bandwidth BW or efficient long training sequence HE-LTF parameter;
The triggering independent field of information is used to indicate the independent of each station transmission data packet in one or more websites Information, the independent field of the triggering information include at least one following parameter: association identification AID or modulating-coding collection MCS.
The third possible implementation with reference to first aspect, in the 4th kind of possible implementation of first aspect, institute The trigger frame type identification stated in the trigger frame for carrying single MAC function is also used to determine the MAC function, the MAC function It include: that detection sounding, block confirmation request BAR or random access trigger TF-R,
Alternatively, the trigger frame for carrying single MAC function carries independent frame control field, the frame control field refers to Show the MAC function that trigger frame carries.
4th kind of possible implementation with reference to first aspect, in the 5th kind of possible implementation of first aspect, institute The field for stating the trigger frame for carrying single MAC function includes the form of element field, the element field containing type, length and It is worth three parts, the field of the trigger frame for carrying single MAC function includes at least one following field: the triggering information list Only field or the MAC function field.
With reference to first aspect or first aspect the first possible implementation, in the 6th kind of possible reality of first aspect In existing mode, if the trigger frame be carries the trigger frame of multiple MAC functions, the trigger frame including trigger information field and Multiple MAC function fields;
The triggering information field includes triggering information public field and the triggering independent field of information, the multiple MAC function Each MAC function field in energy field includes MAC function public field and the independent field of MAC function;
The triggering information public field is located at before the MAC function public field, the independent field of the triggering information Before the independent field of MAC function, the triggering information public field is located at before the independent field of the triggering information.
6th kind of possible implementation with reference to first aspect, in the 7th kind of possible implementation of first aspect, institute It states in the trigger frame for carrying multiple MAC functions, the triggering information public field is used to indicate one or more station transmission numbers According to the public information of packet, the triggering information public field includes at least one following parameter: length, the protection interval of data packet GI, bandwidth BW or efficient long training sequence HE-LTF parameter;
The triggering independent field of information is used to indicate the independent of each station transmission data packet in one or more websites Information, the independent field of the triggering information include at least one following parameter: association identification AID or modulating-coding collection MCS.
7th kind of possible implementation with reference to first aspect, in the 8th kind of possible implementation of first aspect, institute Stating trigger frame further includes trigger frame type sub-mark, for determining the concrete function of each MAC function field, the triggering type Sub-mark is located at triggering frame head, MAC function public field or triggering information public field,
Alternatively, each MAC function field carries independent frame control field, the frame control field instruction is specific MAC function, the MAC function include: detection sounding, block confirmation request BAR or random access triggering TF-R.
8th kind of possible implementation with reference to first aspect, in the 9th kind of possible implementation of first aspect, institute The field for stating the trigger frame for carrying multiple MAC functions includes the form of element field, the element field containing type, length and It is worth three parts, the field of the trigger frame for carrying single MAC function includes at least one following field: the triggering information list Only field or the MAC function field.
With reference to first aspect or first aspect the first possible implementation, in the tenth kind of possible reality of first aspect In existing mode, if the trigger frame is to carry the trigger frame of multiple MAC functions, the trigger frame include public information field and Website field one by one, the public information field are located at before the website field one by one, and the public information field includes touching Photos and sending messages public field and multiple MAC function public fields, the field of website one by one include the independent field of triggering information and MAC The independent field of function.
Tenth kind of possible implementation with reference to first aspect, in a kind of possible implementation of first aspect the tenth, The independent field of information is triggered in the field of website one by one and the independent field of MAC function is divided according to each website, alternatively,
The all independent fields of triggering information of first part in the field of website one by one, in the field of website one by one The all independent fields of MAC function in two parts.
Tenth a kind of possible implementation with reference to first aspect, in the 12nd kind of possible implementation of first aspect In, in the trigger frame for carrying multiple MAC functions, the triggering information public field is used to indicate one or more websites and passes The public information of transmission of data packet, the triggering information public field includes at least one following parameter: the length of data packet, protection It is spaced GI, bandwidth BW or efficient long training sequence HE-LTF parameter;
The triggering independent field of information is used to indicate the independent of each station transmission data packet in one or more websites Information, the independent field of the triggering information include at least one following parameter: association identification AID or modulating-coding collection MCS.
12nd kind of possible implementation with reference to first aspect, in the 13rd kind of possible implementation of first aspect In, the trigger frame further includes trigger frame type sub-mark, for determining the concrete function of each MAC function field, the touching It sends out type sub-mark and is located at triggering frame head, MAC function public field or triggering information public field.
Second aspect, the embodiment of the invention provides the devices that trigger frame in a kind of WLAN is transmitted, comprising:
Baseband circuit, for generating trigger frame, the trigger frame includes trigger frame type identification, the trigger frame type mark Know for distinguishing different types of trigger frame, the different types of trigger frame includes: not carry Media access contorl MAC function Trigger frame, carry the trigger frame of single MAC function or carry the trigger frame of multiple MAC functions;
Radio circuit, for sending the trigger frame.
In conjunction with second aspect, in the first possible implementation of the second aspect, the touching that the baseband chip generates Hair frame includes MAC function number mark, and the MAC function number mark is used to indicate the MAC function number that the trigger frame carries Mesh.
In conjunction with second aspect or second aspect the first possible implementation, in second of second aspect possible reality In existing mode, the trigger frame for carrying single MAC function includes triggering information field and a MAC function field;
The triggering information field includes triggering information public field and the triggering independent field of information, the MAC function word Section includes MAC function public field and the independent field of MAC function;
The triggering information public field is located at before the MAC function public field, the independent field of the triggering information Before the independent field of MAC function, the triggering information public field is located at before the independent field of the triggering information.
In conjunction with second of second aspect possible implementation, in second aspect in the third possible implementation, institute It states in the trigger frame for carrying single MAC function, the triggering information public field is used to indicate one or more station transmission numbers According to the public information of packet, the triggering information public field includes at least one following parameter: length, the protection interval of data packet GI, bandwidth BW or efficient long training sequence HE-LTF parameter;
The triggering independent field of information is used to indicate the independent of each station transmission data packet in one or more websites Information, the independent field of the triggering information include at least one following parameter: association identification AID or modulating-coding collection MCS.
The third possible implementation in conjunction with second aspect, in the 4th kind of possible implementation of second aspect, institute The trigger frame type identification stated in the trigger frame for carrying single MAC function is also used to determine the MAC function, the MAC function It include: that detection sounding, block confirmation request BAR or random access trigger TF-R,
Alternatively, the trigger frame for carrying single MAC function carries independent frame control field, the frame control field refers to Show the MAC function that trigger frame carries.
In conjunction with the 4th kind of possible implementation of second aspect, in the 5th kind of possible implementation of second aspect, institute The field for stating the trigger frame for carrying single MAC function includes the form of element field, the element field containing type, length and It is worth three parts, the field of the trigger frame for carrying single MAC function includes at least one following field: the triggering information list Only field or the MAC function field.
In conjunction with second aspect or second aspect the first possible implementation, in the 6th kind of possible reality of second aspect In existing mode, if the trigger frame be carries the trigger frame of multiple MAC functions, the trigger frame including trigger information field and Multiple MAC function fields;
The triggering information field includes triggering information public field and the triggering independent field of information, the multiple MAC function Each MAC function field in energy field includes MAC function public field and the independent field of MAC function;
The triggering information public field is located at before the MAC function public field, the independent field of the triggering information Before the independent field of MAC function, the triggering information public field is located at before the independent field of the triggering information.
In conjunction with the 6th kind of possible implementation of second aspect, in the 7th kind of possible implementation of second aspect, institute It states in the trigger frame for carrying multiple MAC functions, the triggering information public field is used to indicate one or more station transmission numbers According to the public information of packet, the triggering information public field includes at least one following parameter: length, the protection interval of data packet GI, bandwidth BW or efficient long training sequence HE-LTF parameter;
The triggering independent field of information is used to indicate the independent of each station transmission data packet in one or more websites Information, the independent field of the triggering information include at least one following parameter: association identification AID or modulating-coding collection MCS.
In conjunction with the 7th kind of possible implementation of second aspect, in the 8th kind of possible implementation of second aspect, institute Stating trigger frame further includes trigger frame type sub-mark, for determining the concrete function of each MAC function field, the triggering type Sub-mark is located at triggering frame head, MAC function public field or triggering information public field,
Alternatively, each MAC function field carries independent frame control field, the frame control field instruction is specific MAC function, the MAC function include: detection sounding, block confirmation request BAR or random access triggering TF-R.
In conjunction with the 8th kind of possible implementation of second aspect, in the 9th kind of possible implementation of second aspect, institute The field for stating the trigger frame for carrying multiple MAC functions includes the form of element field, the element field containing type, length and It is worth three parts, the field of the trigger frame for carrying single MAC function includes at least one following field: the triggering information list Only field or the MAC function field.
In conjunction with second aspect or second aspect the first possible implementation, in the tenth kind of possible reality of second aspect In existing mode, if the trigger frame is to carry the trigger frame of multiple MAC functions, the trigger frame include public information field and Website field one by one, the public information field are located at before the website field one by one, and the public information field includes touching Photos and sending messages public field and multiple MAC function public fields, the field of website one by one include the independent field of triggering information and MAC The independent field of function.
In conjunction with the tenth kind of possible implementation of second aspect, in a kind of possible implementation of second aspect the tenth, The independent field of information is triggered in the field of website one by one and the independent field of MAC function is divided according to each website, alternatively,
The all independent fields of triggering information of first part in the field of website one by one, in the field of website one by one The all independent fields of MAC function in two parts.
In conjunction with a kind of possible implementation of second aspect the tenth, in the 12nd kind of possible implementation of second aspect In, in the trigger frame for carrying multiple MAC functions, the triggering information public field is used to indicate one or more websites and passes The public information of transmission of data packet, the triggering information public field includes at least one following parameter: the length of data packet, protection It is spaced GI, bandwidth BW or efficient long training sequence HE-LTF parameter;
The triggering independent field of information is used to indicate the independent of each station transmission data packet in one or more websites Information, the independent field of the triggering information include at least one following parameter: association identification AID or modulating-coding collection MCS.
In conjunction with the 12nd kind of possible implementation of second aspect, in the 13rd kind of possible implementation of second aspect In, the trigger frame further includes trigger frame type sub-mark, for determining the concrete function of each MAC function field, the touching It sends out type sub-mark and is located at triggering frame head, MAC function public field or triggering information public field.
For the embodiment of the present invention during WLAN transmits trigger frame, the trigger frame includes trigger frame type mark Know, for the trigger frame type identification for distinguishing different types of trigger frame, the different types of trigger frame includes: not carry The trigger frame of Media access contorl MAC function, the trigger frame for carrying single MAC function or the trigger frame for carrying multiple MAC functions, It is designed by the above-mentioned means, carrying out unified frame format to different types of trigger frame, simplifies the structure of trigger frame, reduce The complexity of receiving station.
Detailed description of the invention
Fig. 1 a is the frame structure diagram of trigger frame in the prior art.
Fig. 1 b is application scenario diagram of the invention.
Fig. 2 is the flow chart of the embodiment of the present invention 1.
Fig. 3 is Frame control field structure figure in trigger frame of the embodiment of the present invention.
Fig. 4 is the structure chart 1 that the embodiment of the present invention carries single MAC function trigger frame.
Fig. 5 is the structure chart 2 that the embodiment of the present invention carries single MAC function trigger frame.
Fig. 6 is the trigger frame that the embodiment of the present invention carries Sounding function.
Fig. 7 is the trigger frame that the embodiment of the present invention carries BAR function.
Fig. 8 is the trigger frame that the embodiment of the present invention carries TF-R function.
Fig. 9 is the structure chart 3 that the embodiment of the present invention carries single MAC function trigger frame.
Figure 10 is the structure chart of element field of the embodiment of the present invention.
Figure 11 is the triggering frame structure diagram 1 that the embodiment of the present invention carries multiple MAC functions.
Figure 12 is the triggering frame structure diagram 2 that the embodiment of the present invention carries multiple MAC functions.
Figure 13 is the triggering frame structure diagram 3 that the embodiment of the present invention carries multiple MAC functions.
Figure 14 is the triggering frame structure diagram 4 that the embodiment of the present invention carries multiple MAC functions.
Figure 15 is the triggering frame structure diagram 5 that the embodiment of the present invention carries multiple MAC functions.
Figure 16 is that the MU-RTS simplified in the embodiment of the present invention triggers frame structure.
Figure 17 is to carry out resource block distribution instruction figure in public domain as unit of 20MHz.
Figure 18 is the unified resource block distribution instruction figure of unicast/multicast trigger frame.
Figure 19 is the unified resource block distribution instruction figure of unicast/multicast trigger frame.
Figure 20 is the structure chart of entity apparatus in the embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is embodied with reference to the accompanying drawing Example is described in further detail.Obviously, embodiments described below is a part of the embodiment of the present invention, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.
The embodiment of the present invention can be applied to WLAN (English: Wireless Local Area Network, letter Claim: WLAN), WLAN accepted standard is IEEE (English: Institute of Electrical and at present Electronics Engineers, Chinese: Institute of Electrical and Electric Engineers) 802.11 series.WLAN may include multiple bases This services set (English: Basic Service Set, referred to as: BSS), basic service concentrate network node be website (English: Station, referred to as: STA), website includes the website (referred to as: AP, English: Access Point) and non-access point of access point class The website (English: None Access Point Station, abbreviation: Non-AP STA) of class.Each basic service set can wrap Containing an AP and multiple Non-AP STA for being associated with the AP.
Access point class website, also referred to as wireless access points or hot spot etc..AP is that mobile subscriber enters cable network Access point, for major deployments inside family, inside buildings and garden, typical covering radius is tens meters to rice up to a hundred, when So, open air can also be deployed in.AP is equivalent to the bridge of connection a wired network and wireless network, and main function is by each nothing Line networking client connects together, then by wireless network access network based on ethernet.Specifically, AP can be with WiFi (English: Wireless Fidelity, Chinese: Wireless Fidelity) chip terminal device or the network equipment.Optionally, AP can be branch The equipment for holding 802.11ax standard, still optionally further, the AP can for support 802.11ac, 802.11n, 802.11g, The equipment of a variety of WLAN standards such as 802.11b and 802.11a.
The website (English: None Access Point Station, referred to as: Non-AP STA) of non-access point class, can be with It is wireless communications chips, wireless sensor or wireless communication terminal.Such as: it supports the mobile phone of WiFi communication function, support The tablet computer of WiFi communication function, the set-top box for supporting WiFi communication function, the smart television for supporting WiFi communication function, branch The intelligent wearable device of WiFi communication function is held, support the vehicular communication equipment of WiFi communication function and supports WiFi communication function The computer of energy.Optionally, website can support 802.11ax standard, still optionally further, website support 802.11ac, 802.11n, a variety of WLAN standards such as 802.11g, 802.11b and 802.11a.
Fig. 1 b be a typical WLAN deployment scene system schematic, including AP and 3 STA, AP respectively with STA1, STA2 and STA3 are communicated.
In wlan system 802.11ax after being introduced into OFDMA technology, AP can on different running time-frequency resources from it is different STA carries out downstream transmission.AP, which carries out downstream transmission, can use different modes, as how defeated OFDMA single user multi input is (Single-User Multiple-Input Multiple-Output, abbreviation SU-MIMO) mode or OFDMA are multi-purpose out Family multiple-input and multiple-output (Multi-User Multiple-Input Multiple-Output, abbreviation MU-MIMO).
Wherein, AP can send down physical layer protocol Data Unit to multiple websites or multiple site groups simultaneously (Physical Layer Protocol Data Unit, abbreviation PPDU).Here multiple websites can refer under SU-MIMO mode Website, multiple site groups can refer to the site groups under MU-MIMO mode.
It specifically, include physical layer convergence protocol (Physical Layer Convergence in the PPDU that AP is sent Procedure, abbreviation PLCP) header field (Header) and data field include legacy preamble (L- in the PLCP Header Preamble) and efficient leading part, the efficient leading part include efficient signaling A (High Efficient signaling A, abbreviation HE-SIGA) partially with the part efficient signaling B (High Efficient signaling B, abbreviation HE-SIGB).It should It can also include the part media access control layer (Media Access Control, abbreviation MAC) in PPDU.
Embodiment 1
The embodiment of the present invention 1 provides a kind of method of trigger frame transmission in WLAN, and this method can be applied to Website, such as: AP and STA1-STA3 in Fig. 1 b, the website can support next generation wlan standard, such as: 802.11ax system Formula.Fig. 2 is the flow chart of the method for the transmission identifier, the specific steps are as follows:
Step 110: generating trigger frame, the trigger frame includes trigger frame type identification, and the trigger frame type identification is used In distinguishing different types of trigger frame, the different types of trigger frame includes: not carry the touching of Media access contorl MAC function Frame is sent out, the trigger frame of single MAC function is carried or carries the trigger frame of multiple MAC functions.
Step 120: sending the trigger frame.
It should be noted that trigger frame is sent by AP, if the trigger frame is not carry Media access contorl MAC function Trigger frame, then STA is received wait for a period of time after trigger frame after send the frame for carrying upstream data.For example, the waiting time May include: SIFS (English: Short Interframe Space, Chinese: short frame interval), DIFS (English: Distributed Inter-frame Spacing, Chinese: distributed inter-frame space).
If the trigger frame is to carry the trigger frame of single MAC function, STA is received wait for a period of time after trigger frame after Send the mac frame of respective type.
If the trigger frame is to carry the trigger frame of multiple MAC functions, corresponding STA receive after trigger frame according to scheduling from Oneself MAC function type sends the mac frame of respective type after waiting for a period of time.For all STA, multiple classes are sent The mac frame of type.
It should be noted that trigger frame can also only include two classes: not carrying the trigger frame of MAC function and carry single The trigger frame of MAC function, which is not limited by the present invention.
It should be noted that trigger frame can also only include the trigger frame for carrying single MAC function, trigger frame type at this time Mark is for determining specific MAC function, and which is not limited by the present invention.
It should be noted that a kind of Frame control field composition of possible mac frame head is as shown in Figure 3.
It should be noted that trigger frame type identification can be located at mac frame head.Trigger frame type identification can be located at MAC Frame Control field in frame head.The mac frame is uniquely determined by type in Frame control field and subtype For trigger frame.Different types of trigger frame is defined by the trigger frame extended field of 4bit.If for example: define 8 The trigger frame of the different MAC functions of kind, " 0000 " represents the trigger frame as the triggering for not carrying Media access contorl MAC function Frame, " 0001-1000 " represent 8 kinds of trigger frames for carrying single MAC function, and " 1001 " represent the triggering for carrying multiple MAC functions Frame, remaining bit are reserved situation.It, can be in addition, the position of trigger frame extended field is not limited to Frame control field It is arranged side by side with Frame control field positioned at the other parts of mac frame head, for example, an individual field.In addition, may be used also To be located at the public domain common info in Fig. 1 a in Frame body.
It should be noted that trigger frame type identification can be located at mac frame head.Trigger frame type identification can be located at MAC Frame Control field in frame head.It is triggering by " 11 " for reserving type field in Frame control field Frame.Different types of trigger frame is defined by the subtype of 4bit.If for example: define 8 kinds of difference MAC functions Trigger frame, " 0000 " represent the trigger frame as the trigger frame for not carrying Media access contorl MAC function, " 0001-1000 " generation The trigger frame of 8 kinds of the table single MAC functions of carrying, " 1001 " represent the trigger frame for carrying multiple MAC functions, remaining bit is reserved Situation.
It should be noted that trigger frame type identification can also pass through bitmap (English: Bitmap) Lai Shixian.It illustrates It is bright: to define the trigger frame of 8 kinds of difference MAC functions, then realized with 8 bitmaps, each of bitmap defines whether to make With the MAC function, " 00000000 " represents the trigger frame as the trigger frame for not carrying Media access contorl MAC function, " 00010000 " represents the trigger frame for carrying the 4th kind of MAC function, and " 00010011 " represents the touching for carrying the 4th, 7,8 kind of MAC function Send out frame.Frame control field can be located at using the trigger frame type identification of bitmap form, may be located on mac frame head Other parts, a for example, individual field is arranged side by side with Frame control field.Further, it is also possible to be located in Fig. 1 a The public domain common info in Frame body.
Optionally, the trigger frame type identification can also be identified by MAC function number to realize, the MAC function Number mark is used to indicate the MAC function number that the trigger frame carries.Alternatively, on the basis of other trigger frame types instruction On, the additional number for indicating MAC function, the number of the MAC function to indicate multi-functional MAC trigger frame.
Specifically, if the MAC function number of triggering frame definition is M, the bit number of the MAC function number mark isFor example: if the MAC function number of triggering frame definition is 8, needs 4 bit definitions MAC function Energy number mark, it is 0 that " 0000 ", which defines MAC function number, and it is 1 that " 0001 ", which defines MAC function number, " 0010-1000 " definition MAC function number is 3-8, and " 1001-1111 " these bits are reserved.The MAC function number mark can be located at mac frame Head may be located on the other parts of mac frame head, for example, an individual field, arranged side by side with Frame control field, It may be located on the public domain common info in Fig. 1 a in Frame body.
It should be noted that the trigger frame of trigger frame and the single MAC function of carrying for not carrying MAC function can not It is identified including MAC function number.
The trigger frame for not carrying Media access contorl MAC function will be hereafter divided into trigger frame, carry single MAC function It is stated from the aspects of the trigger frame three of trigger frame and the multiple MAC functions of carrying.
Specifically, the trigger frame for carrying single MAC function includes triggering information field and a MAC function word Section, as shown in Figure 3;
The triggering information field includes triggering information public field and the triggering independent field of information, the MAC function word Section includes MAC function public field and the independent field of MAC function;
The triggering information public field is located at before the MAC function public field, the independent field of the triggering information Before the independent field of MAC function, the triggering information public field is located at before the independent field of the triggering information.
It should be noted that triggering the sequence of each component part of information field and MAC function field in Fig. 4 are as follows: touching Photos and sending messages public field, the independent field of triggering information, MAC function public field and the independent field of MAC function.In addition, triggering letter The sequence for ceasing each component part of field and MAC function field can also be using the arrangement of Fig. 5: triggering information public field, MAC function public field, the independent field of triggering information and the independent field of MAC function.
Specifically, in the trigger frame for carrying single MAC function, the triggering information public field is used to indicate one Or the public information of multiple station transmission data packets, the triggering information public field include at least one following parameter: data Length, protection interval GI, bandwidth BW or the efficient long training sequence HE-LTF parameter of packet;
The triggering independent field of information is used to indicate the independent of each station transmission data packet in one or more websites Information, the independent field of the triggering information include at least one following parameter: association identification AID or modulating-coding collection MCS.
Optionally, the trigger frame type identification in the trigger frame for carrying single MAC function is also used to determine the MAC Function, the MAC function includes: detection sounding, block confirmation request BAR or random access triggering TF-R, alternatively, described take Trigger frame with single MAC function carries independent frame control field, the MAC function that the frame control field instruction trigger frame carries Energy.
Specifically, for the Sounding frame of channel detection as shown in fig. 6, multi-user block confirmation request frame MU-BAR is as schemed Shown in 7, the trigger frame TFR of random access is as shown in Figure 8.
It should be noted that the trigger frame for carrying single MAC function can also carry independent Frame control word Section, as shown in figure 9, the independent Frame control field is located at MAC function public field.
Optionally, the field of the trigger frame for carrying single MAC function includes the form of element field, the element word Section containing type, length and value three parts, the field of the trigger frame for carrying single MAC function includes at least one following word Section: the independent field of triggering information or the MAC function field.
It should be noted that the form of element field is as shown in Figure 10, wherein component identifier is used to indicate the class of element Type learns that the effect of subsequent information is What for by component identifier.Such as the information of the expression back of " 00 " be by The triggering information of a website;" 01 " indicates that the information of back is the MAC function field for completing MU-BAR.Length is used to indicate The byte length of the element, component identifier are extended to Optional Field, when component identifier is unable to satisfy the quantity of indicator element When, component identifier extension is just enabled, the length of information field is variable, the value comprising element.
It should be noted that in trigger frame can the only triggering independent field of information be element field form, in trigger frame Can also there was only MAC function field is element form, and the independent field of information and MAC function field can also be triggered in trigger frame all It is element form, which is not limited by the present invention.
It should be noted that MAC function field can also be located at before triggering information field, AID can be only positioned at this time MAC functional information field in front can also be existed simultaneously in triggering information field and MAC function field.
In addition, the length of each field can be 0 for certain certain types of trigger frames, that is, certain field is not present, Above description is suitable for following embodiment.
Specifically, if the trigger frame is to carry the trigger frame of multiple MAC functions, the trigger frame includes triggering information word Section and multiple MAC function fields;
The triggering information field includes triggering information public field and the triggering independent field of information, the multiple MAC function Each MAC function field in energy field includes MAC function public field and the independent field of MAC function;
The triggering information public field is located at before the MAC function public field, the independent field of the triggering information Before the independent field of MAC function, the triggering information public field is located at before the independent field of the triggering information.
It should be noted that the trigger frame for carrying multiple MAC functions is as shown in figure 11.
Optionally, in the trigger frame for carrying multiple MAC functions, the triggering information public field is used to indicate one Or the public information of multiple station transmission data packets, the triggering information public field include at least one following parameter: data Length, protection interval GI, bandwidth BW or the efficient long training sequence HE-LTF parameter of packet;
The triggering independent field of information is used to indicate the independent of each station transmission data packet in one or more websites Information, the independent field of the triggering information include at least one following parameter: association identification AID or modulating-coding collection MCS.
It should be noted that MAC function field can also be located at before triggering information field, AID can be only positioned at this time MAC functional information field in front can also be existed simultaneously in triggering information field and MAC function field.In addition, for certain Certain types of trigger frame, the length of each field can be 0, that is, certain field is not present.
Optionally, the trigger frame further includes trigger frame type sub-mark, for determining the specific of each MAC function field Function, the triggering type sub-mark are located at triggering frame head, MAC function public field or triggering information public field,
Alternatively, each MAC function field carries independent frame control field, the frame control field instruction is specific MAC function, the MAC function include: detection sounding, block confirmation request BAR or random access triggering TF-R.
Specifically, if trigger frame type identification determines that the trigger frame belongs to the trigger frame for carrying multiple MAC functions, each MAC function field all carries trigger frame type sub-mark, such as: with the trigger frame type sub-mark of 4 bits, wherein " 0001 " Sounding function is represented, " 0010 " represents BAR function, and " 0011 " represents TF-R function.Trigger frame type sub-mark can be with It is indicated if defining 4 kinds of MAC functions with 4 bitmaps using the form of bitmap (English: Bitmap), such as: " 0001 " represents sounding function, and " 0010 " represents BAR function, and " 0100 " represents TF-R function.
It should be noted that the independent frame control field of each MAC function field carrying is as shown in figure 12.
Optionally, the field of the trigger frame for carrying multiple MAC functions includes the form of element field, the element word Section containing type, length and value three parts, the field of the trigger frame for carrying single MAC function includes at least one following word Section: the independent field of triggering information or the MAC function field.
It should be noted that the element field frame structure diagram for carrying multiple MAC functions is as shown in figure 13.The lattice of element field Formula has above to be illustrated in detail, can only the triggering independent field of information be element field form in trigger frame, in trigger frame Can also there was only MAC function field is element form, and the independent field of information and MAC function field can also be triggered in trigger frame all It is element form, which is not limited by the present invention.
Specifically, if the trigger frame is to carry the trigger frame of multiple MAC functions, the trigger frame includes public information word Section and one by one website field, the public information field are located at before the website field one by one, the public information field Including triggering information public field and multiple MAC function public fields, the field of website one by one includes the triggering independent word of information Section and the independent field of MAC function.
Optionally, the independent field of information and the independent field of MAC function are triggered in the field of website one by one according to each station It puts to divide, alternatively,
The all independent fields of triggering information of first part in the field of website one by one, in the field of website one by one The all independent fields of MAC function in two parts.
It should be noted that the independent field of information and the independent field of MAC function are triggered in website field one by one according to each Website is as shown in figure 14 come the situation divided.
The all independent fields of triggering information of first part in the field of website one by one, in the field of website one by one The all independent fields of MAC function in two parts, the division of the above-mentioned field of website one by one are as shown in figure 15.
Optionally, in the trigger frame for carrying multiple MAC functions, the triggering information public field is used to indicate one Or the public information of multiple station transmission data packets, the triggering information public field include at least one following parameter: data Length, protection interval GI, bandwidth BW or the efficient long training sequence HE-LTF parameter of packet;
The triggering independent field of information is used to indicate the independent of each station transmission data packet in one or more websites Information, the independent field of the triggering information include at least one following parameter: association identification AID or modulating-coding collection MCS.
Optionally, the trigger frame further includes trigger frame type sub-mark, for determining the specific of each MAC function field Function, the triggering type sub-mark are located at triggering frame head, MAC function public field or triggering information public field.
Specifically, if trigger frame type identification determines that the trigger frame belongs to the trigger frame for carrying multiple MAC functions, each MAC function field all carries trigger frame type sub-mark, such as: with the trigger frame type sub-mark of 4 bits, wherein " 0001 " Sounding function is represented, " 0010 " represents BAR function, and " 0011 " represents TF-R function.Trigger frame type sub-mark can be with It is indicated if defining 4 kinds of MAC functions with 4 bitmaps using the form of bitmap (English: Bitmap), such as: " 0001 " represents sounding function, and " 0010 " represents BAR function, and " 0100 " represents TF-R function.
Specifically, for carrying single MAC function or carrying the trigger frame of multiple MAC functions, MAC function can be based on Feature reduction triggers information field.Illustratively, for example, MU-RTS (English: Multiple User Request to Send, Chinese: multi-user requests to send) trigger frame, for trigger multiple STA and meanwhile carry out CTS (it is English: Clear to Send, in Text: allow to send) reply.The frame structure of MU-RTS is as shown in figure 16.
In prior art, the interaction of RTS and CTS are mainly used for that NAV (English: Network Allocation is arranged Vector, Chinese: network allocation vector), guarantee that the AP or STA of non-transmitting-receiving are transmitted without data, reduces interference.Therefore CTS Often transmitted as unit of minimum channel bandwidth 20MHz.And it is usually carried out with traditional physical layer packet structure more The copy transmissions of a 20MHz.In addition, for CTS, it is due to there is CTS (English: Simultaneous CTS) simultaneously, i.e., multiple STA replys CTS on identical running time-frequency resource, and using identical packet configuration, therefore being can be without resource block/channel point Match.In addition, often there are two types of modes, one is bandwidth negotiation is carried out, i.e., when MU-RTS carries out multi-user CTS transmission AP tells STA which 20MHz in whole bandwidth is replied;Another is all STA without bandwidth negotiation Replied in all 20MHz.Here comprising two layers of meaning, first is that resource block distribution can for the resource block scheduling of CTS With simplification, as unit of 20MHz, it is allocated without being combined with all possible resource block;Other one layer be can be straight It connects and is distributed without resource block.
Further, since all STA need to use identical packet configuration in some 20MHz, therefore all STA MCS (English: Modulation Coding Set, Chinese: modulating-coding collection), NSTS (English: Number of Space- Time Streams, Chinese: empty time stream number), LDPC (English Low Density Parity Code, Chinese: low-density parity Check code), STBC (English: Space-Time Block Code, Chinese: space-time block coding), BF (English: BeamForming, Chinese: beam forming) etc. the triggering information instruction of website field one by one must be identical, therefore for these parameters, stand one by one The triggering information of point field can extract triggering information public field, or directly without instruction, using the parameter of default.Cause Identical running time-frequency resource is occupied for CTS simultaneously, it is therefore desirable to which the transmission of opposite robust is adopted so can often default STA needs Minimum MCS is taken, minimum fluxion etc. is transmitted, therefore can also be stood one by one without MCS, NSTS, LDPC, STBC, BF etc. The triggering information instruction of point field.
Because trigger frame type can determine the format of triggering information field, trigger frame type needs to be located at triggering information Before front or entire triggering information field inside field.Because all STA need to take identical MCS, NSTS, LDPC, BF etc. one by one transmitted by site information parameter, therefore this kind of parameter can extract triggering information public field, or directly adopt With default behavior, without transmission.In addition, triggering information public field can carry whether bandwidth negotiation instruction, instruction by Whether a website triggering information field includes bandwidth negotiation instruction.Bandwidth negotiation instruction also can simply use the side of bit map Formula, instruction is transmitted on which 20MHz of whole bandwidth, without carrying out all groups as what is mentioned in prior art The resource block of conjunction distributes instruction.For that can also save in public area the case where public domain carries out resource block distribution instruction Domain carries out the instruction of just a resource block distribution, because of the 20MHz size that whole bandwidth can be bandwidth/20MHz by default allocation Resource block.
In addition, for MU-RTS, since the effect for needing multiple STA to reply synchronous CTS in identical running time-frequency resource is to biography The STA that unites carries out NAV setting, therefore defaulting CTS is the physical layer architecture using conventional form, therefore UL GI instruction can save; Because this body length of CTS frame is fixed, PPDU length can also be saved;Because default is carried out in bandwidth identical with downlink CTS transmission is carried out in whole bandwidth or institute's agreed bandwidth, therefore the bandwidth instruction of uplink can also save.
It should be noted that can be simplified accordingly according to trigger frame type for other kinds of trigger frame Design.
It optionally, as another embodiment, can be in prior art in the distribution instruction of downlink resource block 20MHz is unit, is presented in a manner of table index.If some resource block is the resource block more than 20MHz, 1 can be used Table index (English: Table Index) repeats table index to be indicated, wherein table index is by all possibility Resource block combination exist in a table, each combination has an index, and in resource block is distributed and indicated, passes through bit Information indicates combined call number, has the function that resource block indicates.Here table index indicates an example, can also lead to The instruction that other modes carry out resource block distribution is crossed, mainly emphasizes the resource instruction of every 20MHz here.Figure 17 has given one The example of 80MHz resource block distribution instruction.
Optionally, instruction is distributed for the resource block of trigger frame, can be equally designed using the thought, such as Figure 18 institute Show.In addition, being directed to the trigger frame of two kinds of forms of unicast and multicast trigger frame, unified design can be carried out.
Unicast/multicast trigger frame instruction and resource block distribution are carried in mac frame head or the public domain for triggering information The instruction of number/sequence.If being designated as multicast trigger frame, resource block distribution number/sequence instruction be used to refer to it is subsequent how many Sub- public domain, every sub- public domain carry out the instruction of 20MHz one by one or the resource block greater than 20MHz in order;If referring to It is shown as unicast trigger frame, then resource block distribution number/sequence instruction is used to refer to be the resource block point since which 20MHz Match.Because for unicast trigger frame, one only inside some 20MHz of the data of the single STA of triggering is less than or equal to The resource block of 20MHz or some be individually greater than on the resource block of 20MHz.
Figure 19 is that the unified resource block of unicast/multicast trigger frame distributes instruction.Illustratively, for a downlink frame, together When include multicast trigger frame and unicast trigger frame.Multicast trigger frame is responsible for the resource block distribution of entire 80MHz, first instruction form The number of index is 3, i.e., it is 3 that following resource block, which distributes the number of sub- public field,.Then to subsequent from the 1st, the 2nd, The resource instruction that 3rd 20MHz starts is indicated respectively;And some STA is in the 2nd 20MHz, and issue the list of the STA Trigger frame is broadcast, the resource block distribution of the 20MHz is only responsible for, indicate subsequent 1 table index instruction first is from the 2nd The resource block distribution that 20MHz starts.Then sub- public field is distributed by 1 resource block indicate that the resource block on the 20MHz divides Match.
For the embodiment of the present invention during WLAN transmits trigger frame, the trigger frame includes trigger frame type mark Know, for the trigger frame type identification for distinguishing different types of trigger frame, the different types of trigger frame includes: not carry The trigger frame of Media access contorl MAC function, the trigger frame for carrying single MAC function or the trigger frame for carrying multiple MAC functions, It is designed by the above-mentioned means, carrying out unified frame format to different types of trigger frame, simplifies the structure of trigger frame, reduce The complexity of receiving station.
Embodiment 2
Figure 20 is the schematic block diagram that the device of trigger frame is transmitted in the WLAN of the embodiment of the present invention 2.The data Transmitting device is, for example, website, either realizes the special circuit or chip of correlation function.The website 1000 includes processor 1010, memory 1020, baseband circuit 1030, radio circuit 1040 and antenna 1050.The device of the transmission trigger frame can be AP shown in Fig. 1 b or STA1-STA3.
Specifically, the operation of 1010 control site 1000 of processor.Memory 1020 may include read-only memory and with Machine accesses memory, and provides instruction and data to processor 1010, and processor can be general processor, Digital Signal Processing Device, specific integrated circuit, field programmable gate array or other programmable logic device.A part of memory 1020 may be used also To include non-volatile row random access memory (NVRAM).Baseband circuit 1030 be for synthesizing the baseband signal that will emit, Or the baseband signal received is decoded.Radio circuit 1040 is used for the carrier wave of the modulates baseband signals of low frequency to high frequency The carrier signal of signal, high frequency is emitted by antenna 1050.Radio circuit is also used for the received high-frequency signal solution of antenna 1050 It is tuned into the carrier signal of low frequency.The various components of website 1000 are coupled by bus 1060, wherein bus system 1060 It further include power bus, control bus and status signal bus in addition in addition to including data/address bus.But illustrate in order to clear See, various buses are all designated as bus system 1060 in figure.It should be noted that the above-mentioned description for site structure, it can Applied to subsequent embodiment.
Baseband circuit 1030, for generating trigger frame, the trigger frame includes trigger frame type identification, the trigger frame class Type is identified for distinguishing different types of trigger frame, and the different types of trigger frame includes: not carry Media access contorl MAC The trigger frame of function, the trigger frame for carrying single MAC function or the trigger frame for carrying multiple MAC functions;
Radio circuit 1040, for sending the trigger frame.
It should be noted that trigger frame can also only include two classes: not carrying the trigger frame of MAC function and carry single The trigger frame of MAC function, which is not limited by the present invention.
It should be noted that trigger frame can also only include the trigger frame for carrying single MAC function, the present invention does not do this It limits.
Optionally, the trigger frame that the baseband chip generates includes MAC function number mark, the MAC function number mark Know and is used to indicate the MAC function number that the trigger frame carries.
Specifically, the trigger frame type identification can also be identified by MAC function number and be realized, specific implementation exists Have in embodiment 1 and elaborates.
It should be noted that the trigger frame of trigger frame and the single MAC function of carrying for not carrying MAC function can not It is identified including MAC function number.
It is illustrated in detail it should be noted that trigger frame type identification and MAC function number mark have in embodiment 1, It repeats no more.
Specifically, the trigger frame that baseband circuit generates includes at least three classes, does not carry the trigger frame of MAC function, carries list The trigger frame of a MAC function and the trigger frame for carrying multiple MAC functions.
Optionally, as an implementation, the trigger frame for carrying single MAC function include triggering information field with An and MAC function field;
The triggering information field includes triggering information public field and the triggering independent field of information, the MAC function word Section includes MAC function public field and the independent field of MAC function;
The triggering information public field is located at before the MAC function public field, the independent field of the triggering information Before the independent field of MAC function, the triggering information public field is located at before the independent field of the triggering information.
It should be noted that the present invention to the sequence of each field in the trigger frame for carrying single MAC function without limitation, Have in embodiment 1 and elaborate, repeats no more.
Further, in the trigger frame for carrying single MAC function, the triggering information public field is used to indicate one The public information of a or multiple station transmission data packets, the triggering information public field include at least one following parameter: number According to the length of packet, protection interval GI, bandwidth BW or efficient long training sequence HE-LTF parameter;
The triggering independent field of information is used to indicate the independent of each station transmission data packet in one or more websites Information, the independent field of the triggering information include at least one following parameter: association identification AID or modulating-coding collection MCS.
Optionally, the trigger frame type identification in the trigger frame for carrying single MAC function is also used to determine the MAC Function, the MAC function include: that detection sounding, block confirmation request BAR or random access trigger TF-R,
Alternatively, the trigger frame for carrying single MAC function carries independent frame control field, the frame control field refers to Show the MAC function that trigger frame carries.
It should be noted that carry detecting function trigger frame, carry block confirmation request function trigger frame and carry with The trigger frame of machine access triggering has explanation in embodiment 1, repeats no more.
Optionally, the field of the trigger frame for carrying single MAC function includes the form of element field, the element word Section containing type, length and value three parts, the field of the trigger frame for carrying single MAC function includes at least one following word Section: the independent field of triggering information or the MAC function field.
Optionally, as another embodiment, described if the trigger frame is to carry the trigger frame of multiple MAC functions Trigger frame includes triggering information field and multiple MAC function fields;
The triggering information field includes triggering information public field and the triggering independent field of information, the multiple MAC function Each MAC function field in energy field includes MAC function public field and the independent field of MAC function;
The triggering information public field is located at before the MAC function public field, the independent field of the triggering information Before the independent field of MAC function, the triggering information public field is located at before the independent field of the triggering information.
It should be noted that the present invention to the sequence of each field in the trigger frame for carrying multiple MAC functions without limitation, Have in embodiment 1 and elaborate, repeats no more.
Optionally, in the trigger frame for carrying multiple MAC functions, the triggering information public field is used to indicate one Or the public information of multiple station transmission data packets, the triggering information public field include at least one following parameter: data Length, protection interval GI, bandwidth BW or the efficient long training sequence HE-LTF parameter of packet;
The triggering independent field of information is used to indicate the independent of each station transmission data packet in one or more websites Information, the independent field of the triggering information include at least one following parameter: association identification AID or modulating-coding collection MCS.
Optionally, the trigger frame further includes trigger frame type sub-mark, for determining the specific of each MAC function field Function, the triggering type sub-mark are located at triggering frame head, MAC function public field or triggering information public field,
Alternatively, each MAC function field carries independent frame control field, the frame control field instruction is specific MAC function, the MAC function include: detection sounding, block confirmation request BAR or random access triggering TF-R.
It should be noted that how to be defined about trigger frame type sub-mark, has elaborate in embodiment 1, no It repeats again.
It should be noted that carry detecting function trigger frame, carry block confirmation request function trigger frame and carry with The trigger frame of machine access triggering has explanation in embodiment 1, repeats no more.
Optionally, the field of the trigger frame for carrying multiple MAC functions includes the form of element field, the element word Section containing type, length and value three parts, the field of the trigger frame for carrying single MAC function includes at least one following word Section: the independent field of triggering information or the MAC function field.
Optionally, alternatively, if the trigger frame is to carry the trigger frame of multiple MAC functions, the touching Hair frame includes public information field and website field one by one, the public information field be located at the website field one by one it Before, the public information field includes triggering information public field and multiple MAC function public fields, the website field one by one Including the independent field of triggering information and the independent field of MAC function.
Specifically, the independent field of information and the independent field of MAC function are triggered in the field of website one by one according to each station It puts to divide, alternatively,
The all independent fields of triggering information of first part in the field of website one by one, in the field of website one by one The all independent fields of MAC function in two parts.
Optionally, in the trigger frame for carrying multiple MAC functions, the triggering information public field is used to indicate one Or the public information of multiple station transmission data packets, the triggering information public field include at least one following parameter: data Length, protection interval GI, bandwidth BW or the efficient long training sequence HE-LTF parameter of packet;
The triggering independent field of information is used to indicate the independent of each station transmission data packet in one or more websites Information, the independent field of the triggering information include at least one following parameter: association identification AID or modulating-coding collection MCS.
Optionally, the trigger frame further includes trigger frame type sub-mark, for determining the specific of each MAC function field Function, the triggering type sub-mark are located at triggering frame head, MAC function public field or triggering information public field.
It should be added that each functional unit in each embodiment of the present invention can integrate in a processing unit In, it is also possible to each unit and physically exists alone, is also possible to two or more units and is integrated in one unit.On It states integrated unit both and can take the form of hardware realization, can also realize in the form of software functional units.Specifically, The mode of required common hardware can be added to realize by software, common hardware includes universal integrated circuit, universal cpu, leads to With digital signal processor (DSP), field programmable gate array (FPGA), programmable logic device (PLD), general-purpose storage, Universal elements etc., naturally it is also possible to by specialized hardware include specific integrated circuit (ASIC), dedicated cpu, private memory, Special components and parts etc. are realized.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words It embodies, which is stored in a storage medium, including some instructions are used so that a computer Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (English: Read-Only Memory, referred to as: ROM), random access memory (English: Random Access Memory, referred to as: RAM), magnetic disk or The various media that can store program code such as CD.
Software or instruction can also be transmitted by transmission medium.For example, if using coaxial cable, optical fiber cable, double Twisted wire, Digital Subscriber Line (English: Digital Subscriber Line, referred to as: DSL) or wireless technology (such as infrared ray, Radio and microwave) from website, server or other remote source softwares, then coaxial cable, optical fiber cable, twisted pair, DSL or wireless technology (such as infrared ray, radio and microwave)) it include in the definition of transmission medium.

Claims (29)

1. a kind of method that trigger frame is transmitted in WLAN characterized by comprising
Trigger frame is generated, the trigger frame includes trigger frame type identification, and the trigger frame type identification is for distinguishing inhomogeneity The trigger frame of type, the different types of trigger frame include: the trigger frame for not carrying Media access contorl MAC function, carry list The trigger frame of a MAC function or the trigger frame for carrying multiple MAC functions;
Send the trigger frame.
2. the method according to claim 1, wherein the trigger frame include MAC function number mark, it is described MAC function number mark is used to indicate the MAC function number that the trigger frame carries.
3. method according to claim 1 or 2, which is characterized in that the trigger frame for carrying single MAC function includes touching Photos and sending messages field and a MAC function field;
The triggering information field includes triggering information public field and the triggering independent field of information, the MAC function field packet Include MAC function public field and the independent field of MAC function;
The triggering information public field is located at before the MAC function public field, and the independent field of the triggering information is located at Before the independent field of MAC function, the triggering information public field is located at before the independent field of the triggering information.
4. according to the method described in claim 3, it is characterized in that, in the trigger frame for carrying single MAC function, the touching Photos and sending messages public field is used to indicate the public information of one or more station transmission data packets, the triggering information public field Including at least one following parameter: length, protection interval GI, bandwidth BW or the efficient long training sequence HE-LTF ginseng of data packet Number;
The triggering independent field of information is used to indicate the independent information of each station transmission data packet in one or more websites, The independent field of the triggering information includes at least one following parameter: association identification AID or modulating-coding collection MCS.
5. according to the method described in claim 4, it is characterized in that, triggering in the trigger frame for carrying single MAC function Frame type identification is also used to determine the MAC function, the MAC function include: detection sounding, block confirmation request BAR or Random access triggers TF-R,
Alternatively, the trigger frame for carrying single MAC function carries independent frame control field, the frame control field instruction touching Send out the MAC function that frame carries.
6. according to the method described in claim 5, it is characterized in that, the field packet of the trigger frame for carrying single MAC function Include the form of element field, the element field containing type, length and value three parts, the touching for carrying single MAC function The field for sending out frame includes at least one following field: the independent field of triggering information or the MAC function field.
7. method according to claim 1 or 2, which is characterized in that if the trigger frame is to carry the touching of multiple MAC functions Frame is sent out, the trigger frame includes triggering information field and multiple MAC function fields;
The triggering information field includes triggering information public field and the triggering independent field of information, the multiple MAC function word Each MAC function field in section includes MAC function public field and the independent field of MAC function;
The triggering information public field is located at before the MAC function public field, and the independent field of the triggering information is located at Before the independent field of MAC function, the triggering information public field is located at before the independent field of the triggering information.
8. the method according to the description of claim 7 is characterized in that in the trigger frame for carrying multiple MAC functions, the touching Photos and sending messages public field is used to indicate the public information of one or more station transmission data packets, the triggering information public field Including at least one following parameter: length, protection interval GI, bandwidth BW or the efficient long training sequence HE-LTF ginseng of data packet Number;
The triggering independent field of information is used to indicate the independent information of each station transmission data packet in one or more websites, The independent field of the triggering information includes at least one following parameter: association identification AID or modulating-coding collection MCS.
9. according to the method described in claim 8, using it is characterized in that, the trigger frame further includes trigger frame type sub-mark In the concrete function for determining each MAC function field, it is public that the trigger frame type sub-mark is located at triggering frame head, MAC function Field or triggering information public field,
Alternatively, each MAC function field carries independent frame control field, the frame control field indicates specific MAC Function, the MAC function include: detection sounding, block confirmation request BAR or random access triggering TF-R.
10. according to the method described in claim 9, it is characterized in that, the field packet of the trigger frame for carrying multiple MAC functions Include the form of element field, the element field containing type, length and value three parts, the touching for carrying single MAC function The field for sending out frame includes at least one following field: the independent field of triggering information or the MAC function field.
11. method according to claim 1 or 2, which is characterized in that if the trigger frame is to carry multiple MAC functions Trigger frame, the trigger frame include public information field and website field one by one, the public information field be located at it is described by Before a website field, the public information field includes triggering information public field and multiple MAC function public fields, described Website field includes the independent field of triggering information and the independent field of MAC function one by one.
12. according to the method for claim 11, which is characterized in that trigger the independent field of information in the field of website one by one It is divided with the independent field of MAC function according to each website, alternatively,
The all independent fields of triggering information of first part in the field of website one by one, second in the field of website one by one Divide all independent fields of MAC function.
13. according to the method for claim 12, which is characterized in that described in the trigger frame for carrying multiple MAC functions Triggering information public field is used to indicate the public information of one or more station transmission data packets, the public word of the triggering information Section includes at least one following parameter: length, protection interval GI, bandwidth BW or the efficient long training sequence HE-LTF ginseng of data packet Number;
The triggering independent field of information is used to indicate the independent information of each station transmission data packet in one or more websites, The independent field of the triggering information includes at least one following parameter: association identification AID or modulating-coding collection MCS.
14. according to the method for claim 13, which is characterized in that the trigger frame further includes trigger frame type sub-mark, For determining the concrete function of each MAC function field, it is public that the trigger frame type sub-mark is located at triggering frame head, MAC function Field or triggering information public field altogether.
15. the device that trigger frame is transmitted in a kind of WLAN characterized by comprising
Baseband circuit, for generating trigger frame, the trigger frame includes trigger frame type identification, and the trigger frame type identification is used In distinguishing different types of trigger frame, the different types of trigger frame includes: not carry the touching of Media access contorl MAC function Frame is sent out, the trigger frame of single MAC function is carried or carries the trigger frame of multiple MAC functions;
Radio circuit, for sending the trigger frame.
16. device according to claim 15, which is characterized in that the trigger frame that the baseband circuit generates includes MAC function Energy number mark, the MAC function number mark are used to indicate the MAC function number that the trigger frame carries.
17. device according to claim 15 or 16, which is characterized in that the trigger frame packet for carrying single MAC function Include triggering information field and a MAC function field;
The triggering information field includes triggering information public field and the triggering independent field of information, the MAC function field packet Include MAC function public field and the independent field of MAC function;
The triggering information public field is located at before the MAC function public field, and the independent field of the triggering information is located at Before the independent field of MAC function, the triggering information public field is located at before the independent field of the triggering information.
18. device according to claim 17, which is characterized in that described in the trigger frame for carrying single MAC function Triggering information public field is used to indicate the public information of one or more station transmission data packets, the public word of the triggering information Section includes at least one following parameter: length, protection interval GI, bandwidth BW or the efficient long training sequence HE-LTF ginseng of data packet Number;
The triggering independent field of information is used to indicate the independent information of each station transmission data packet in one or more websites, The independent field of the triggering information includes at least one following parameter: association identification AID or modulating-coding collection MCS.
19. device according to claim 18, which is characterized in that the touching in the trigger frame for carrying single MAC function Hair frame type identification is also used to determine that the MAC function, the MAC function include: detection sounding, block confirmation request BAR Or random access triggers TF-R,
Alternatively, the trigger frame for carrying single MAC function carries independent frame control field, the frame control field instruction touching Send out the MAC function that frame carries.
20. device according to claim 19, which is characterized in that the field of the trigger frame for carrying single MAC function Form including element field, the element field containing type, length and value three parts, the single MAC function of carrying The field of trigger frame includes at least one following field: the independent field of triggering information or the MAC function field.
21. device according to claim 15 or 16, which is characterized in that if the trigger frame is to carry multiple MAC functions Trigger frame, the trigger frame includes triggering information field and multiple MAC function fields;
The triggering information field includes triggering information public field and the triggering independent field of information, the multiple MAC function word Each MAC function field in section includes MAC function public field and the independent field of MAC function;
The triggering information public field is located at before the MAC function public field, and the independent field of the triggering information is located at Before the independent field of MAC function, the triggering information public field is located at before the independent field of the triggering information.
22. device according to claim 21, which is characterized in that described in the trigger frame for carrying multiple MAC functions Triggering information public field is used to indicate the public information of one or more station transmission data packets, the public word of the triggering information Section includes at least one following parameter: length, protection interval GI, bandwidth BW or the efficient long training sequence HE-LTF ginseng of data packet Number;
The triggering independent field of information is used to indicate the independent information of each station transmission data packet in one or more websites, The independent field of the triggering information includes at least one following parameter: association identification AID or modulating-coding collection MCS.
23. device according to claim 22, which is characterized in that the trigger frame further includes trigger frame type sub-mark, For determining the concrete function of each MAC function field, it is public that the trigger frame type sub-mark is located at triggering frame head, MAC function Field or triggering information public field altogether,
Alternatively, each MAC function field carries independent frame control field, the frame control field indicates specific MAC Function, the MAC function include: detection sounding, block confirmation request BAR or random access triggering TF-R.
24. device according to claim 23, which is characterized in that the field of the trigger frame for carrying multiple MAC functions Form including element field, the element field containing type, length and value three parts, the single MAC function of carrying The field of trigger frame includes at least one following field: the independent field of triggering information or the MAC function field.
25. device according to claim 15 or 16, which is characterized in that if the trigger frame is to carry multiple MAC functions Trigger frame, the trigger frame includes public information field and website field one by one, and the public information field is located at described One by one before website field, the public information field includes triggering information public field and multiple MAC function public fields, institute Stating website field one by one includes the independent field of triggering information and the independent field of MAC function.
26. device according to claim 25, which is characterized in that trigger the independent field of information in the field of website one by one It is divided with the independent field of MAC function according to each website, alternatively,
The all independent fields of triggering information of first part in the field of website one by one, second in the field of website one by one Divide all independent fields of MAC function.
27. device according to claim 26, which is characterized in that described in the trigger frame for carrying multiple MAC functions Triggering information public field is used to indicate the public information of one or more station transmission data packets, the public word of the triggering information Section includes at least one following parameter: length, protection interval GI, bandwidth BW or the efficient long training sequence HE-LTF ginseng of data packet Number;
The triggering independent field of information is used to indicate the independent information of each station transmission data packet in one or more websites, The independent field of the triggering information includes at least one following parameter: association identification AID or modulating-coding collection MCS.
28. device according to claim 27, which is characterized in that the trigger frame further includes trigger frame type sub-mark, For determining the concrete function of each MAC function field, it is public that the trigger frame type sub-mark is located at triggering frame head, MAC function Field or triggering information public field altogether.
29. a kind of computer storage medium, which is characterized in that the computer storage medium is stored with computer program, described It can be realized method described in claim 1 to 14 any one when computer program is executed by hardware.
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