CN103118432B - Data communication device and identification method of channel bandwidth - Google Patents
Data communication device and identification method of channel bandwidth Download PDFInfo
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- CN103118432B CN103118432B CN201310028230.4A CN201310028230A CN103118432B CN 103118432 B CN103118432 B CN 103118432B CN 201310028230 A CN201310028230 A CN 201310028230A CN 103118432 B CN103118432 B CN 103118432B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0092—Indication of how the channel is divided
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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Abstract
The invention provides a data communication device comprising a data processing module used for generating a message frame and/or analyzing the value of the channel bandwidth message identifying bit included in the message frame received by a data interface module. The message frame comprises a channel bandwidth message identifying bit and the corresponding channel bandwidth is identified by value of the channel bandwidth message identifying bit; the corresponding channel bandwidth is identified by the value of the channel bandwidth message identifying bit; and the message frame is sent and/or received by the data interface module. The method further provides the relevant identifying method of the channel bandwidth. With the identifying method, dynamic channel allocation of 802.11aj device can be realized under the 60 GHz spectrum, and demand of establishing at least 3 BSS/PBSS (basic service set /personal basic service set) can be met to the satisfaction of being under the 60 GHz spectrum.
Description
Technical field
The present invention relates to communication technical field, in particular to the identification method of data communication equipment and channel width.
Background technology
IEEE(IEEE-USA) 802.11ad technology is mainly used in home entertaining, and feature is: the transmission of big data quantity, and data rate is high, but its scope covered is less, is probably 10 meters even less.
802.11ad technology uses the frequency spectrum of 60GHz, but the regulation in China due to spectrum management, 60GHz spectrum allocation may is considerably less to the resource of 802.11ad, so be assigned with again the frequency spectrum of 40GHz-50GHz for 11ad without committee, CMMW(China Millimeter Wave is called in China, China's millimeter wave), in IEEE, be called 802.11aj.
In the distribution of the free frequency spectrum of 60GHz, China is only assigned with 2 2.16GHz bandwidth spectrum, and is all assigned with 4 2.16GHz bandwidth spectrum in the world.For the networking plan of 11aj WLAN (wireless local area network), the frequency range of 60GHz must there be at least 3 logic channels, just can not form OBSS(overlapping Basis Service Set, overlapping basic service set).Due in the application of reality, 2 BSS(basis service set may have been had in 60GHz frequency range, Basic Service Set)/PBSS(personal basis service set) occupy the channel width of two 2.16GHz, when the 3rd BSS/PBSS wants networking, OBSS certainly will be formed.
In order to 3 PBSS/BSS can be formed in 60GHz frequency range, in the related, propose and dynamic conditioning and distribution are carried out to the channel width of 2 2.16GHz on current 60GHz frequency spectrum, such as make two BSS/PBSS formed carry out frequency range to move or the adjustment of channel width, idle channel bandwidth after making the 3rd BSS/PBSS can utilize adjustment realizes networking, sets up 3 BSS/PBSS.
In the related, merely provide a kind of method of channel width dynamic conditioning and distribution, but in existing 11ad scheme, STA or PCP(Personal basic service setcontrol point)/AP(Access Point, access point) in Signalling exchange or the process of data interaction, be the channel width of oneself work is not shown.And if the dynamic assignment of channel width will be realized, the channel width that STA or PCP/AP must work oneself broadcast out, otherwise other STA or PCP/AP does not know the channel width that STA or PCP/AP in a network works.
Therefore, need a kind of new technical scheme, make under 60GHz frequency spectrum, 802.11aj equipment can realize dynamic channel allocation, under meeting 60GHz frequency spectrum, at least can set up the demand of 3 BSS/PBSS.
Summary of the invention
The present invention, just based on the problems referred to above, proposes a kind of new technical scheme, and make under 60GHz frequency spectrum, 802.11aj equipment can realize dynamic channel allocation, under meeting 60GHz frequency spectrum, at least can set up the demand of 3 BSS/PBSS.
In view of this, the present invention proposes a kind of data communication equipment, comprise: data processing module, generating messages frame, channel width message identification position is comprised in described message frame, when the value of described channel width message identification position is the first value, represent described data communication equipment be operated in 60GHz frequency spectrum under 540MHz channel width, when the value of described channel width message identification position is the second value, represent described data communication equipment be operated in 60GHz frequency spectrum under 1.08GHz channel width, when the value of described channel width message identification position is the 3rd value, represent described data communication equipment be operated in 60GHz frequency spectrum under 2.16GHz channel width, and/or, the value of the channel width message identification position comprised in the described message frame that resolution data interactive module receives, wherein, when the value of described channel width message identification position is the first value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when the value of described channel width message identification position is the second value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when the value of described channel width message identification position is the 3rd value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width, described data interaction module, sends and/or receives described message frame.
In this technical scheme, data communication equipment can be STA, as mobile phone or flat board etc., also can be access point, as wireless router or personal network's control device (PNC), data processing module can be the chip module of data processing in data communication equipment, and data interaction module is then equivalent to signal receiving/transmission device and antenna etc.By arranging corresponding channel width message identification position in message frame, make the recipient of this message frame can pass through to resolve the concrete numerical value of this channel width message identification position, thus judge the channel width that the transmit leg of this message frame is shared under 60GHz frequency spectrum, particularly, such as channel width message identification bit stealing 2 bits, and when its numerical value is " 01 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when numerical value is " 10 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when numerical value is " 11 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width, indicator channel bandwidth information flag can certainly be carried out with more bit, here repeat no more.
In technique scheme, preferably, described message frame is broadcast message frame, multicast message frame or unicast messages frame.In this technical scheme, message frame can be sent, particularly, if message frame is broadcast message frame by different modes such as broadcast, multicast, clean cultures, it can be the frame such as beacon frame (Beacon) or probe request, also can be the Frame of broadcast; If message frame is unicast messages frame, it can be the frame such as probing response frame or the data-message of clean culture.
In technique scheme, preferably, described message frame is Frame, administrative messag frame or action message frame.In this technical scheme, message frame can with Frame, the form of administrative messag frame or action message frame sends out, particularly, if message frame is Frame, it can be the unicast data frames that communicating pair carries out data interaction, also can be multicast or the broadcast data frame that AP and multiple STA carries out data interaction, if message frame is administrative messag frame, it can be the probe response message frame of clean culture, the beacon frame of broadcast or the probe request of broadcast, it can certainly be other administrative messag frame, here repeat no more, certainly this message frame also can send with the type form of other frame.
In technique scheme, preferably, described channel width flag comprises the one or more positions in the physics frame head of described message frame.In this technical scheme, message frame is by physical frame head part and physical layer service data (PSDU, physical layer convergence proceduresservice data unit) form, channel width message identification position can be represented with the one or more positions in the physics frame head of message frame.
In technique scheme, preferably, described physics frame head is for controlling physics frame head, and described channel width message identification position is one or more positions of the Header Block subdomain of described control physics frame head; Or described physics frame head is orthogonal frequency frame format (OFDM Frame Format) physics frame head, described channel width message identification position is one or more positions of the Header subdomain of described orthogonal frequency frame format (OFDM FrameFormat) physics frame head; Or described physics frame head is that list carries (SC) physics frame head, described channel width message identification position is one or more positions that described list carries the Header subdomain of (SC) physics frame head; Or described physics frame head is that low-power list carries (low power SC) physics frame head, described channel width message identification position is one or more positions that described low-power list carries the Header subdomain of (low power SC) physics frame head.In this technical scheme, in 4 kinds of forms of physics frame head, all include Header subdomain (controlling to be specially Header Block subdomain in physics frame head), therefore, reservation position in Header subdomain can be adopted as channel width flag, represent the channel width that STA or PCP/AP works, such as: carry out indicator channel bandwidth information flag with two bits, on duty when being " 01 ", be identified at the 540MHz channel width under 60GHz frequency spectrum, on duty when being " 10 ", be identified at the 1.08GHz channel width under 60GHz frequency spectrum, on duty when being " 11 ", be identified at the 2.16GHz channel width under 60GHz frequency spectrum, channel width information bit can certainly be represented with more bit, its identification method is the same with the identification method of 2 bits, here repeat no more.
In technique scheme, preferably, described channel width flag comprises the one or more positions in the media access control frame of described message frame.In this technical scheme, except adopting physics frame head, also channel width flag can be set in mac frame (media access control frame).
In technique scheme, preferably, described channel width message identification position comprises one or more positions of the frame head part of media access control frame in described message frame.In this technical scheme, channel width message identification position can be arranged on the frame head part of mac frame, thus make this mac frame recipient can according to preset rule, thus the assigned address of the frame head part of the mac frame received obtains this channel width message identification position, to determine the channel width situation of the transmit leg of mac frame, realize the dynamic assignment to the channel under 60GHz frequency spectrum, particularly, if message frame is beacon frame or probe request, channel width message identification position can be represented with one or more positions of mac frame head part, here beacon frame can be the many gigabit (DMG in common beacon frame or direction, directional Multi-giga) beacon frame.
In technique scheme, preferably, described channel width message identification position is one or more positions of the body section of media access control frame in described message frame.In this technical scheme, channel width message identification position also can be arranged on the body section of mac frame, thus make this mac frame recipient can according to preset rule, thus the assigned address of the body section of the mac frame received obtains this channel width message identification position, to determine the channel width situation of the transmit leg of mac frame, realize the dynamic assignment to the channel under 60GHz frequency spectrum, particularly, if message frame is beacon frame or probe request, channel width message identification position can be represented with one or more positions of mac frame body section, can with information element (IE in body section channel width message identification position, information elements) form occur, here beacon frame can be the many gigabit (DMG in common beacon frame or direction, directional Multi-giga) beacon frame.
According to a further aspect in the invention, also proposed a kind of identification method of channel width, comprise: generating messages frame, channel width message identification position is comprised in described message frame, when the value of described channel width message identification position is the first value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when the value of described channel width message identification position is the second value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when the value of described channel width message identification position is the 3rd value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width, send described message frame.
In this technical scheme, data communication equipment can be STA, as mobile phone or flat board etc., also can be access point, as wireless router or personal network's control device (PNC), data processing module can be the chip module of data processing in data communication equipment, and data interaction module is then equivalent to signal receiving/transmission device and antenna etc.By arranging corresponding channel width message identification position in message frame, make the recipient of this message frame can pass through to resolve the concrete numerical value of this channel width message identification position, thus judge the channel width that the transmit leg of this message frame is shared under 60GHz frequency spectrum, particularly, such as channel width message identification bit stealing 2 bits, and when its numerical value is " 01 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when numerical value is " 10 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when numerical value is " 11 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width, indicator channel bandwidth information flag can certainly be carried out with more bit, here repeat no more.
In technique scheme, preferably, described message frame is broadcast message frame, multicast message frame or unicast messages frame.In this technical scheme, message frame can be sent, particularly, if message frame is broadcast message frame by different modes such as broadcast, multicast, clean cultures, it can be the frame such as beacon frame (Beacon) or probe request, also can be the Frame of broadcast; If message frame is unicast messages frame, it can be the frame such as probing response frame or the data-message of clean culture.
In technique scheme, preferably, described message frame is Frame, administrative messag frame or action message frame.In this technical scheme, message frame can with Frame, the form of administrative messag frame or action message frame sends out, particularly, if message frame is Frame, it can be the unicast data frames that communicating pair carries out data interaction, also can be multicast or the broadcast data frame that AP and multiple STA carries out data interaction, if message frame is administrative messag frame, it can be the probe response message frame of clean culture, the beacon frame of broadcast or the probe request of broadcast, it can certainly be other administrative messag frame, here repeat no more, certainly this message frame also can send with the type form of other frame.
In technique scheme, preferably, described channel width flag comprises the one or more positions in the physics frame head of described message frame.In this technical scheme, message frame is by physical frame head part and physical layer service data (PSDU, physical layer convergence proceduresservice data unit) form, channel width message identification position can be represented with the one or more positions in the physics frame head of message frame.
In technique scheme, preferably, described physics frame head is for controlling physics frame head, and described channel width message identification position is one or more positions of the Header Block subdomain of described control physics frame head; Or described physics frame head is orthogonal frequency frame format (OFDM Frame Format) physics frame head, described channel width message identification position is one or more positions of the Header subdomain of described orthogonal frequency frame format (OFDM FrameFormat) physics frame head; Or described physics frame head is that list carries (SC) physics frame head, described channel width message identification position is one or more positions that described list carries the Header subdomain of (SC) physics frame head; Or described physics frame head is that low-power list carries (low power SC) physics frame head, described channel width message identification position is one or more positions that described low-power list carries the Header subdomain of (low power SC) physics frame head.In this technical scheme, in 4 kinds of forms of physics frame head, all include Header subdomain (controlling to be specially Header Block subdomain in physics frame head), therefore, reservation position in Header subdomain can be adopted as channel width flag, represent the channel width that STA or PCP/AP works, such as: carry out indicator channel bandwidth information flag with two bits, on duty when being " 01 ", be identified at the 540MHz channel width under 60GHz frequency spectrum, on duty when being " 10 ", be identified at the 1.08GHz channel width under 60GHz frequency spectrum, on duty when being " 11 ", be identified at the 2.16GHz channel width under 60GHz frequency spectrum, channel width information bit can certainly be represented with more bit, its identification method is the same with the identification method of 2 bits, here repeat no more.
In technique scheme, preferably, described channel width flag comprises the one or more positions in the media access control frame of described message frame.In this technical scheme, except adopting physics frame head, also channel width flag can be set in mac frame (media access control frame).
In technique scheme, preferably, described channel width message identification position comprises one or more positions of the frame head part of media access control frame in described message frame.In this technical scheme, channel width message identification position can be arranged on the frame head part of mac frame, thus make this mac frame recipient can according to preset rule, thus the assigned address of the frame head part of the mac frame received obtains this channel width message identification position, to determine the channel width situation of the transmit leg of mac frame, realize the dynamic assignment to the channel under 60GHz frequency spectrum, particularly, if message frame is beacon frame or probe request, channel width message identification position can be represented with one or more positions of mac frame head part, here beacon frame can be the many gigabit (DMG in common beacon frame or direction, directional Multi-giga) beacon frame.
In technique scheme, preferably, described channel width message identification position is one or more positions of the body section of media access control frame in described message frame.In this technical scheme, channel width message identification position also can be arranged on the body section of mac frame, thus make this mac frame recipient can according to preset rule, thus the assigned address of the body section of the mac frame received obtains this channel width message identification position, to determine the channel width situation of the transmit leg of mac frame, realize the dynamic assignment to the channel under 60GHz frequency spectrum, particularly, if message frame is beacon frame or probe request, channel width message identification position can be represented with one or more positions of mac frame body section, can with information element (IE in body section channel width message identification position, information elements) form occur, here beacon frame can be the many gigabit (DMG in common beacon frame or direction, directional Multi-giga) beacon frame.
According to another aspect of the invention, also proposed a kind of identification method of channel width, comprising: receipt message frame, in described message frame, comprise channel width message identification position; Resolve the value of described channel width message identification position, wherein, when the value of described channel width message identification position is the first value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when the value of described channel width message identification position is the second value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when the value of described channel width message identification position is the 3rd value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width.
In this technical scheme, data communication equipment can be STA, as mobile phone or flat board etc., also can be access point, as wireless router or personal network's control device (PNC), data processing module can be the chip module of data processing in data communication equipment, and data interaction module is then equivalent to signal receiving/transmission device and antenna etc.By arranging corresponding channel width message identification position in message frame, make the recipient of this message frame can pass through to resolve the concrete numerical value of this channel width message identification position, thus judge the channel width that the transmit leg of this message frame is shared under 60GHz frequency spectrum, particularly, such as channel width message identification bit stealing 2 bits, and when its numerical value is " 01 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when numerical value is " 10 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when numerical value is " 11 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width, indicator channel bandwidth information flag can certainly be carried out with more bit, here repeat no more.
In technique scheme, preferably, described message frame is broadcast message frame, multicast message frame or unicast messages frame.In this technical scheme, message frame can be sent, particularly, if message frame is broadcast message frame by different modes such as broadcast, multicast, clean cultures, it can be the frame such as beacon frame (Beacon) or probe request, also can be the Frame of broadcast; If message frame is unicast messages frame, it can be the frame such as probing response frame or the data-message of clean culture.
In technique scheme, preferably, described message frame is Frame, administrative messag frame or action message frame.In this technical scheme, message frame can with Frame, the form of administrative messag frame or action message frame sends out, particularly, if message frame is Frame, it can be the unicast data frames that communicating pair carries out data interaction, also can be multicast or the broadcast data frame that AP and multiple STA carries out data interaction, if message frame is administrative messag frame, it can be the probe response message frame of clean culture, the beacon frame of broadcast or the probe request of broadcast, it can certainly be other administrative messag frame, here repeat no more, certainly this message frame also can send with the type form of other frame.
In technique scheme, preferably, described channel width flag comprises the one or more positions in the physics frame head of described message frame.In this technical scheme, message frame is by physical frame head part and physical layer service data (PSDU, physical layer convergence proceduresservice data unit) form, channel width message identification position can be represented with the one or more positions in the physics frame head of message frame.
In technique scheme, preferably, described physics frame head is for controlling physics frame head, and described channel width message identification position is one or more positions of the Header Block subdomain of described control physics frame head; Or described physics frame head is orthogonal frequency frame format (OFDM Frame Format) physics frame head, described channel width message identification position is one or more positions of the Header subdomain of described orthogonal frequency frame format (OFDM FrameFormat) physics frame head; Or described physics frame head is that list carries (SC) physics frame head, described channel width message identification position is one or more positions that described list carries the Header subdomain of (SC) physics frame head; Or described physics frame head is that low-power list carries (low power SC) physics frame head, described channel width message identification position is one or more positions that described low-power list carries the Header subdomain of (low power SC) physics frame head.In this technical scheme, in 4 kinds of forms of physics frame head, all include Header subdomain (controlling to be specially Header Block subdomain in physics frame head), therefore, reservation position in Header subdomain can be adopted as channel width flag, represent the channel width that STA or PCP/AP works, such as: carry out indicator channel bandwidth information flag with two bits, on duty when being " 01 ", be identified at the 540MHz channel width under 60GHz frequency spectrum, on duty when being " 10 ", be identified at the 1.08GHz channel width under 60GHz frequency spectrum, on duty when being " 11 ", be identified at the 2.16GHz channel width under 60GHz frequency spectrum, channel width information bit can certainly be represented with more bit, its identification method is the same with the identification method of 2 bits, here repeat no more.
In technique scheme, preferably, described channel width flag comprises the one or more positions in the media access control frame of described message frame.In this technical scheme, except adopting physics frame head, also channel width flag can be set in mac frame (media access control frame).
In technique scheme, preferably, described channel width message identification position comprises one or more positions of the frame head part of media access control frame in described message frame.In this technical scheme, channel width message identification position can be arranged on the frame head part of mac frame, thus make this mac frame recipient can according to preset rule, thus the assigned address of the frame head part of the mac frame received obtains this channel width message identification position, to determine the channel width situation of the transmit leg of mac frame, realize the dynamic assignment to the channel under 60GHz frequency spectrum, particularly, if message frame is beacon frame or probe request, channel width message identification position can be represented with one or more positions of mac frame head part, here beacon frame can be the many gigabit (DMG in common beacon frame or direction, directional Multi-giga) beacon frame.
In technique scheme, preferably, described channel width message identification position is one or more positions of the body section of media access control frame in described message frame.In this technical scheme, channel width message identification position also can be arranged on the body section of mac frame, thus make this mac frame recipient can according to preset rule, thus the assigned address of the body section of the mac frame received obtains this channel width message identification position, to determine the channel width situation of the transmit leg of mac frame, realize the dynamic assignment to the channel under 60GHz frequency spectrum, particularly, if message frame is beacon frame or probe request, channel width message identification position can be represented with one or more positions of mac frame body section, can with information element (IE in body section channel width message identification position, information elements) form occur, here beacon frame can be the many gigabit (DMG in common beacon frame or direction, directional Multi-giga) beacon frame.
By above technical scheme, can make under 60GHz frequency spectrum, 802.11aj equipment can realize dynamic channel allocation, under meeting 60GHz frequency spectrum, at least can set up the demand of 3 BSS/PBSS.
Accompanying drawing explanation
Fig. 1 shows the block diagram of data communication equipment according to an embodiment of the invention;
Fig. 2 shows the flow chart of the identification method of channel width according to an embodiment of the invention;
Fig. 3 shows the flow chart of the identification method of channel width according to another embodiment of the invention;
Fig. 4 shows the frame structure schematic diagram controlling physics frame head according to an embodiment of the invention;
Fig. 5 shows the frame structure schematic diagram of orthogonal frequency frame format (OFDM FrameFormat) physics frame head according to an embodiment of the invention;
Fig. 6 shows list according to an embodiment of the invention and carries (SC) physics frame head or low-power list carries the frame structure schematic diagram of (low power SC) physics frame head.
Embodiment
In order to more clearly understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not by the restriction of following public specific embodiment.
Fig. 1 shows the block diagram of data communication equipment according to an embodiment of the invention.
As shown in Figure 1, data communication equipment 100 according to an embodiment of the invention, comprise: data processing module 102, generating messages frame, channel width message identification position is comprised in described message frame, when the value of described channel width message identification position is the first value, represent described data communication equipment 100 be operated in 60GHz frequency spectrum under 540MHz channel width, when the value of described channel width message identification position is the second value, represent described data communication equipment 100 be operated in 60GHz frequency spectrum under 1.08GHz channel width, when the value of described channel width message identification position is the 3rd value, represent described data communication equipment 100 be operated in 60GHz frequency spectrum under 2.16GHz channel width, and/or, the value of the channel width message identification position comprised in the described message frame that resolution data interactive module 104 receives, wherein, when the value of described channel width message identification position is the first value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when the value of described channel width message identification position is the second value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when the value of described channel width message identification position is the 3rd value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width, described data interaction module 104, sends and/or receives described message frame.
In this technical scheme, data communication equipment 100 can be STA, as mobile phone or flat board etc., also can be access point, as wireless router or personal network's control device (PNC), data processing module 102 can be the chip module of data processing in data communication equipment, and data interaction module 104 is then equivalent to signal receiving/transmission device and antenna etc.By arranging corresponding channel width message identification position in message frame, make the recipient of this message frame can pass through to resolve the concrete numerical value of this channel width message identification position, thus judge the channel width that the transmit leg of this message frame is shared under 60GHz frequency spectrum, particularly, such as channel width message identification bit stealing 2 bits, and when its numerical value is " 01 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when numerical value is " 10 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when numerical value is " 11 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width, indicator channel bandwidth information flag can certainly be carried out with more bit, here repeat no more.
In technique scheme, preferably, described message frame is broadcast message frame, multicast message frame or unicast messages frame.In this technical scheme, message frame can be sent, particularly, if message frame is broadcast message frame by different modes such as broadcast, multicast, clean cultures, it can be the frame such as beacon frame (Beacon) or probe request, also can be the Frame of broadcast; If message frame is unicast messages frame, it can be the frame such as probing response frame or the data-message of clean culture.
In technique scheme, preferably, described message frame is Frame, administrative messag frame or action message frame.In this technical scheme, message frame can with Frame, the form of administrative messag frame or action message frame sends out, particularly, if message frame is Frame, it can be the unicast data frames that communicating pair carries out data interaction, also can be multicast or the broadcast data frame that AP and multiple STA carries out data interaction, if message frame is administrative messag frame, it can be the probe response message frame of clean culture, the beacon frame of broadcast or the probe request of broadcast, it can certainly be other administrative messag frame, here repeat no more, certainly this message frame also can send with the type form of other frame.
In technique scheme, preferably, described channel width flag comprises the one or more positions in the physics frame head of described message frame.In this technical scheme, message frame is by physical frame head part and physical layer service data (PSDU, physical layer convergence proceduresservice data unit) form, channel width message identification position can be represented with the one or more positions in the physics frame head of message frame.
In technique scheme, preferably, described physics frame head is for controlling physics frame head, and described channel width message identification position is one or more positions of the Header Block subdomain of described control physics frame head; Or described physics frame head is orthogonal frequency frame format (OFDM Frame Format) physics frame head, described channel width message identification position is one or more positions of the Header subdomain of described orthogonal frequency frame format (OFDM FrameFormat) physics frame head; Or described physics frame head is that list carries (SC) physics frame head, described channel width message identification position is one or more positions that described list carries the Header subdomain of (SC) physics frame head; Or described physics frame head is that low-power list carries (low power SC) physics frame head, described channel width message identification position is one or more positions that described low-power list carries the Header subdomain of (low power SC) physics frame head.In this technical scheme, in 4 kinds of forms of physics frame head, all include Header subdomain (controlling to be specially Header Block subdomain in physics frame head), therefore, reservation position in Header subdomain can be adopted as channel width flag, represent the channel width that STA or PCP/AP works, such as: carry out indicator channel bandwidth information flag with two bits, on duty when being " 01 ", be identified at the 540MHz channel width under 60GHz frequency spectrum, on duty when being " 10 ", be identified at the 1.08GHz channel width under 60GHz frequency spectrum, on duty when being " 11 ", be identified at the 2.16GHz channel width under 60GHz frequency spectrum, channel width information bit can certainly be represented with more bit, its identification method is the same with the identification method of 2 bits, here repeat no more.
In technique scheme, preferably, described channel width flag comprises the one or more positions in the media access control frame of described message frame.In this technical scheme, except adopting physics frame head, also channel width flag can be set in mac frame (media access control frame).
In technique scheme, preferably, described channel width message identification position comprises one or more positions of the frame head part of media access control frame in described message frame.In this technical scheme, channel width message identification position can be arranged on the frame head part of mac frame, thus make this mac frame recipient can according to preset rule, thus the assigned address of the frame head part of the mac frame received obtains this channel width message identification position, to determine the channel width situation of the transmit leg of mac frame, realize the dynamic assignment to the channel under 60GHz frequency spectrum, particularly, if message frame is beacon frame or probe request, channel width message identification position can be represented with one or more positions of mac frame head part, here beacon frame can be the many gigabit (DMG in common beacon frame or direction, directional Multi-giga) beacon frame.
In technique scheme, preferably, described channel width message identification position is one or more positions of the body section of media access control frame in described message frame.In this technical scheme, channel width message identification position also can be arranged on the body section of mac frame, thus make this mac frame recipient can according to preset rule, thus the assigned address of the body section of the mac frame received obtains this channel width message identification position, to determine the channel width situation of the transmit leg of mac frame, realize the dynamic assignment to the channel under 60GHz frequency spectrum, particularly, if message frame is beacon frame or probe request, channel width message identification position can be represented with one or more positions of mac frame body section, can with information element (IE in body section channel width message identification position, information elements) form occur, here beacon frame can be the many gigabit (DMG in common beacon frame or direction, directional Multi-giga) beacon frame.
Fig. 2 shows the flow chart of the identification method of channel width according to an embodiment of the invention.
As shown in Figure 2, the identification method of channel width according to an embodiment of the invention, comprise: step 202, generating messages frame, channel width message identification position is comprised in described message frame, the transmit leg that the value of described channel width message identification position identifies described message frame is operated in which kind of channel width under 60GHz frequency spectrum, wherein, when the value of described channel width message identification position is the first value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when the value of described channel width message identification position is the second value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when the value of described channel width message identification position is the 3rd value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width, step 204, sends described message frame.
In this technical scheme, data communication equipment can be STA, as mobile phone or flat board etc., also can be access point, as wireless router or personal network's control device (PNC), data processing module can be the chip module of data processing in data communication equipment, and data interaction module is then equivalent to signal receiving/transmission device and antenna etc.By arranging corresponding channel width message identification position in message frame, make the recipient of this message frame can pass through to resolve the concrete numerical value of this channel width message identification position, thus judge the channel width that the transmit leg of this message frame is shared under 60GHz frequency spectrum, particularly, such as channel width message identification bit stealing 2 bits, and when its numerical value is " 01 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when numerical value is " 10 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when numerical value is " 11 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width, indicator channel bandwidth information flag can certainly be carried out with more bit, here repeat no more.
In technique scheme, preferably, described message frame is broadcast message frame, multicast message frame or unicast messages frame.In this technical scheme, message frame can be sent, particularly, if message frame is broadcast message frame by different modes such as broadcast, multicast, clean cultures, it can be the frame such as beacon frame (Beacon) or probe request, also can be the Frame of broadcast; If message frame is unicast messages frame, it can be the frame such as probing response frame or the data-message of clean culture.
In technique scheme, preferably, described message frame is Frame, administrative messag frame or action message frame.In this technical scheme, message frame can with Frame, the form of administrative messag frame or action message frame sends out, particularly, if message frame is Frame, it can be the unicast data frames that communicating pair carries out data interaction, also can be multicast or the broadcast data frame that AP and multiple STA carries out data interaction, if message frame is administrative messag frame, it can be the probe response message frame of clean culture, the beacon frame of broadcast or the probe request of broadcast, it can certainly be other administrative messag frame, here repeat no more, certainly this message frame also can send with the type form of other frame.
In technique scheme, preferably, described channel width flag comprises the one or more positions in the physics frame head of described message frame.In this technical scheme, message frame is by physical frame head part and physical layer service data (PSDU, physical layer convergence proceduresservice data unit) form, channel width message identification position can be represented with the one or more positions in the physics frame head of message frame.
In technique scheme, preferably, described physics frame head is for controlling physics frame head, and described channel width message identification position is one or more positions of the Header Block subdomain of described control physics frame head; Or described physics frame head is orthogonal frequency frame format (OFDM Frame Format) physics frame head, described channel width message identification position is one or more positions of the Header subdomain of described orthogonal frequency frame format (OFDM FrameFormat) physics frame head; Or described physics frame head is that list carries (SC) physics frame head, described channel width message identification position is one or more positions that described list carries the Header subdomain of (SC) physics frame head; Or described physics frame head is that low-power list carries (low power SC) physics frame head, described channel width message identification position is one or more positions that described low-power list carries the Header subdomain of (low power SC) physics frame head.In this technical scheme, in 4 kinds of forms of physics frame head, all include Header subdomain (controlling to be specially Header Block subdomain in physics frame head), therefore, reservation position in Header subdomain can be adopted as channel width flag, represent the channel width that STA or PCP/AP works, such as: carry out indicator channel bandwidth information flag with two bits, on duty when being " 01 ", be identified at the 540MHz channel width under 60GHz frequency spectrum, on duty when being " 10 ", be identified at the 1.08GHz channel width under 60GHz frequency spectrum, on duty when being " 11 ", be identified at the 2.16GHz channel width under 60GHz frequency spectrum, channel width information bit can certainly be represented with more bit, its identification method is the same with the identification method of 2 bits, here repeat no more.
In technique scheme, preferably, described channel width flag comprises the one or more positions in the media access control frame of described message frame.In this technical scheme, except adopting physics frame head, also channel width flag can be set in mac frame (media access control frame).
In technique scheme, preferably, described channel width message identification position comprises one or more positions of the frame head part of media access control frame in described message frame.In this technical scheme, channel width message identification position can be arranged on the frame head part of mac frame, thus make this mac frame recipient can according to preset rule, thus the assigned address of the frame head part of the mac frame received obtains this channel width message identification position, to determine the channel width situation of the transmit leg of mac frame, realize the dynamic assignment to the channel under 60GHz frequency spectrum, particularly, if message frame is beacon frame or probe request, channel width message identification position can be represented with one or more positions of mac frame head part, here beacon frame can be the many gigabit (DMG in common beacon frame or direction, directional Multi-giga) beacon frame.
In technique scheme, preferably, described channel width message identification position is one or more positions of the body section of media access control frame in described message frame.In this technical scheme, channel width message identification position also can be arranged on the body section of mac frame, thus make this mac frame recipient can according to preset rule, thus the assigned address of the body section of the mac frame received obtains this channel width message identification position, to determine the channel width situation of the transmit leg of mac frame, realize the dynamic assignment to the channel under 60GHz frequency spectrum, particularly, if message frame is beacon frame or probe request, channel width message identification position can be represented with one or more positions of mac frame body section, can with information element (IE in body section channel width message identification position, information elements) form occur, here beacon frame can be the many gigabit (DMG in common beacon frame or direction, directional Multi-giga) beacon frame.
Fig. 3 shows the flow chart of the identification method of channel width according to another embodiment of the invention.
As shown in Figure 3, the identification method of channel width according to another embodiment of the invention, comprising: step 302, receipt message frame, comprises channel width message identification position in described message frame, step 304, resolve the value of described channel width message identification position, the transmit leg that the value of described channel width message identification position identifies described message frame is operated in the channel width under 60GHz frequency spectrum, wherein, when the value of described channel width message identification position is the first value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when the value of described channel width message identification position is the second value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when the value of described channel width message identification position is the 3rd value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width.
In this technical scheme, data communication equipment can be STA, as mobile phone or flat board etc., also can be access point, as wireless router or personal network's control device (PNC), data processing module can be the chip module of data processing in data communication equipment, and data interaction module is then equivalent to signal receiving/transmission device and antenna etc.By arranging corresponding channel width message identification position in message frame, make the recipient of this message frame can pass through to resolve the concrete numerical value of this channel width message identification position, thus judge the channel width that the transmit leg of this message frame is shared under 60GHz frequency spectrum, particularly, such as channel width message identification bit stealing 2 bits, and when its numerical value is " 01 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when numerical value is " 10 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when numerical value is " 11 ", represent the transmit leg of this message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width, indicator channel bandwidth information flag can certainly be carried out with more bit, here repeat no more.
In technique scheme, preferably, described message frame is broadcast message frame, multicast message frame or unicast messages frame.In this technical scheme, message frame can be sent, particularly, if message frame is broadcast message frame by different modes such as broadcast, multicast, clean cultures, it can be the frame such as beacon frame (Beacon) or probe request, also can be the Frame of broadcast; If message frame is unicast messages frame, it can be the frame such as probing response frame or the data-message of clean culture.
In technique scheme, preferably, described message frame is Frame, administrative messag frame or action message frame.In this technical scheme, message frame can with Frame, the form of administrative messag frame or action message frame sends out, particularly, if message frame is Frame, it can be the unicast data frames that communicating pair carries out data interaction, also can be multicast or the broadcast data frame that AP and multiple STA carries out data interaction, if message frame is administrative messag frame, it can be the probe response message frame of clean culture, the beacon frame of broadcast or the probe request of broadcast, it can certainly be other administrative messag frame, here repeat no more, certainly this message frame also can send with the type form of other frame.
In technique scheme, preferably, described channel width flag comprises the one or more positions in the physics frame head of described message frame.In this technical scheme, message frame is by physical frame head part and physical layer service data (PSDU, physical layer convergence proceduresservice data unit) form, channel width message identification position can be represented with the one or more positions in the physics frame head of message frame.
In technique scheme, preferably, described physics frame head is for controlling physics frame head, and described channel width message identification position is one or more positions of the Header Block subdomain of described control physics frame head; Or described physics frame head is orthogonal frequency frame format (OFDM Frame Format) physics frame head, described channel width message identification position is one or more positions of the Header subdomain of described orthogonal frequency frame format (OFDM FrameFormat) physics frame head; Or described physics frame head is that list carries (SC) physics frame head, described channel width message identification position is one or more positions that described list carries the Header subdomain of (SC) physics frame head; Or described physics frame head is that low-power list carries (low power SC) physics frame head, described channel width message identification position is one or more positions that described low-power list carries the Header subdomain of (low power SC) physics frame head.In this technical scheme, in 4 kinds of forms of physics frame head, all include Header subdomain (controlling to be specially Header Block subdomain in physics frame head), therefore, reservation position in Header subdomain can be adopted as channel width flag, represent the channel width that STA or PCP/AP works, such as: carry out indicator channel bandwidth information flag with two bits, on duty when being " 01 ", be identified at the 540MHz channel width under 60GHz frequency spectrum, on duty when being " 10 ", be identified at the 1.08GHz channel width under 60GHz frequency spectrum, on duty when being " 11 ", be identified at the 2.16GHz channel width under 60GHz frequency spectrum, channel width information bit can certainly be represented with more bit, its identification method is the same with the identification method of 2 bits, here repeat no more.
In technique scheme, preferably, described channel width flag comprises the one or more positions in the media access control frame of described message frame.In this technical scheme, except adopting physics frame head, also channel width flag can be set in mac frame (media access control frame).
In technique scheme, preferably, described channel width message identification position comprises one or more positions of the frame head part of media access control frame in described message frame.In this technical scheme, channel width message identification position can be arranged on the frame head part of mac frame, thus make this mac frame recipient can according to preset rule, thus the assigned address of the frame head part of the mac frame received obtains this channel width message identification position, to determine the channel width situation of the transmit leg of mac frame, realize the dynamic assignment to the channel under 60GHz frequency spectrum, particularly, if message frame is beacon frame or probe request, channel width message identification position can be represented with one or more positions of mac frame head part, here beacon frame can be the many gigabit (DMG in common beacon frame or direction, directional Multi-giga) beacon frame.
In technique scheme, preferably, described channel width message identification position is one or more positions of the body section of media access control frame in described message frame.In this technical scheme, channel width message identification position also can be arranged on the body section of mac frame, thus make this mac frame recipient can according to preset rule, thus the assigned address of the body section of the mac frame received obtains this channel width message identification position, to determine the channel width situation of the transmit leg of mac frame, realize the dynamic assignment to the channel under 60GHz frequency spectrum, particularly, if message frame is beacon frame or probe request, channel width message identification position can be represented with one or more positions of mac frame body section, can with information element (IE in body section channel width message identification position, information elements) form occur, here beacon frame can be the many gigabit (DMG in common beacon frame or direction, directional Multi-giga) beacon frame.
Below in conjunction with Fig. 4 to the frame structure of physics frame head of different-format illustrated in fig. 6, in the various embodiments described above how by data communications equipment the channel width be operated under 60GHz frequency spectrum inform that other equipment are described further.
According to existing working condition, the channel width situation of STA or PCP/AP under 60GHz frequency spectrum comprises 540MHz, 1.08GHz and 2.16GHz, therefore, two in the message frame sent can be utilized to retain position as channel width message identification position, above-mentioned three kinds of situations are identified, such as uses that " 01 " represents 540MHz, " 10 " represent 1.08GHz, " 11 " represent 2.16GHz respectively.
Particularly, in the channel width message identification position here physics frame head that can be arranged on message frame or media access control frame.
Embodiment 1: channel width message identification position is arranged in the physics frame head of message frame.
In existing 11ad technology, physics frame head comprises four kinds of forms: DMG Control PHY(controls physics frame head), DMG OFDM PHY(orthogonal frequency frame format physics frame head), DMG SC PHY(list loading reason frame head) and DMG low power SC PHY(low-power list loading reason frame head).
Fig. 4 shows the frame structure schematic diagram controlling physics frame head according to an embodiment of the invention; Fig. 5 shows the frame structure schematic diagram of orthogonal frequency frame format (OFDM Frame Format) physics frame head according to an embodiment of the invention; Fig. 6 shows list according to an embodiment of the invention and carries (SC) physics frame head or low-power list carries the frame structure schematic diagram frame structure of (list carries (SC) physics frame head carries with low-power list (low power SC) physics frame head identical) of (low power SC) physics frame head.
Visible, in the frame structure of four kinds of forms of physics frame head, all include Header subdomain (controlling to be specially Header Block subdomain in physics frame head), therefore, can represent by the reservation position in Header subdomain the channel width that STA or PCP/AP works.
Embodiment 2: channel width message identification position is arranged in the media access control frame of message frame.
Particularly, channel width message identification position can be arranged on the frame head part of mac frame (media access control frame), also can be arranged on the body section of mac frame.
Certainly, all be fine for channel width message identification position being arranged in the physics frame head of message frame or mac frame, but due in existing Wi-Fi technology, the transmission of physics frame head is all send with basic MCS mode and maximum power, mac frame then adopts suitable MCS mode and suitable power mode according to the strategy of communication, the benefit so adopting physics frame head to identify to allow all STA or PCP/AP know the channel width that it works, if and adopt mac frame, then not necessarily make all STA correctly can both resolve mac frame.
More than be described with reference to the accompanying drawings technical scheme of the present invention, consider in correlation technique, although propose for the dynamic conditioning under 60GHz frequency spectrum, but do not illustrate how the channel width of self is informed other equipment by the equipment be operated under 60GHz frequency spectrum, therefore, the invention provides the identification method of data communication equipment and channel width, make under 60GHz frequency spectrum, 802.11aj equipment can realize dynamic channel allocation, under meeting 60GHz frequency spectrum, at least can set up the demand of 3 BSS/PBSS.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1. a data communication equipment, is characterized in that, comprising:
Data processing module, generating messages frame, channel width message identification position is comprised in described message frame, when the value of described channel width message identification position is the first value, represent described data communication equipment be operated in 60GHz frequency spectrum under 540MHz channel width, when the value of described channel width message identification position is the second value, represent described data communication equipment be operated in 60GHz frequency spectrum under 1.08GHz channel width, when the value of described channel width message identification position is the 3rd value, represent described data communication equipment be operated in 60GHz frequency spectrum under 2.16GHz channel width;
Data interaction module, sends described message frame; And/or,
Data interaction module, receipt message frame, channel width message identification position is comprised in described message frame, resolve the value of described channel width message identification position, wherein, when the value of described channel width message identification position is the first value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when the value of described channel width message identification position is the second value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when the value of described channel width message identification position is the 3rd value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width.
2. data communication equipment according to claim 1, is characterized in that, described message frame is broadcast message frame, multicast message frame or unicast messages frame.
3. data communication equipment according to claim 1, is characterized in that, described message frame is Frame, administrative messag frame or action message frame.
4. data communication equipment according to any one of claim 1 to 3, is characterized in that, described channel width flag comprises the one or more positions in the physics frame head of described message frame.
5. data communication equipment according to claim 4, it is characterized in that, described physics frame head is for controlling physics frame head, and described channel width message identification position is one or more positions of frame head block (Header Block) subdomain of described control physics frame head;
Or described physics frame head is orthogonal frequency frame format (OFDM Frame Format) physics frame head, described channel width message identification position is one or more positions of frame head (Header) subdomain of described orthogonal frequency frame format (OFDM FrameFormat) physics frame head;
Or described physics frame head is that list carries (SC) physics frame head, described channel width message identification position is one or more positions that described list carries frame head (Header) subdomain of (SC) physics frame head;
Or described physics frame head is that low-power list carries (low power SC) physics frame head, described channel width message identification position is one or more positions that described low-power list carries frame head (Header) subdomain of (low power SC) physics frame head.
6. data communication equipment according to any one of claim 1 to 3, is characterized in that, described channel width flag comprises the one or more positions in the media access control frame of described message frame.
7. data communication equipment according to claim 6, is characterized in that, described channel width message identification position is one or more positions of the frame head part of media access control frame in described message frame.
8. data communication equipment according to claim 6, is characterized in that, described channel width message identification position is one or more positions of the body section of media access control frame in described message frame.
9. an identification method for channel width, is characterized in that, comprising:
Generating messages frame, channel width message identification position is comprised in described message frame, when the value of described channel width message identification position is the first value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when the value of described channel width message identification position is the second value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when the value of described channel width message identification position is the 3rd value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width, and send described message frame, and/or,
Receipt message frame, channel width message identification position is comprised in described message frame, resolve the value of described channel width message identification position, wherein, when the value of described channel width message identification position is the first value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 540MHz channel width, when the value of described channel width message identification position is the second value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 1.08GHz channel width, when the value of described channel width message identification position is the 3rd value, represent the transmit leg of described message frame be operated in 60GHz frequency spectrum under 2.16GHz channel width.
10. the identification method of channel width according to claim 9, is characterized in that, described message frame is broadcast message frame, multicast message frame or unicast messages frame.
The identification method of 11. channel widths according to claim 9, is characterized in that, described message frame is Frame, administrative messag frame or action message frame.
The identification method of 12. channel widths according to any one of claim 9 to 11, it is characterized in that, described channel width flag comprises the one or more positions in the physics frame head of described message frame.
The identification method of 13. channel widths according to claim 12, it is characterized in that, described physics frame head is for controlling physics frame head, and described channel width message identification position is one or more positions of frame head block (Header Block) subdomain of described control physics frame head;
Or described physics frame head is orthogonal frequency frame format (OFDM Frame Format) physics frame head, described channel width message identification position is one or more positions of frame head (Header) subdomain of described orthogonal frequency frame format (OFDM FrameFormat) physics frame head;
Or described physics frame head is that list carries (SC) physics frame head, described channel width message identification position is one or more positions that described list carries frame head (Header) subdomain of (SC) physics frame head;
Or described physics frame head is that low-power list carries (low power SC) physics frame head, described channel width message identification position is one or more positions that described low-power list carries frame head (Header) subdomain of (low power SC) physics frame head.
The identification method of 14. channel widths according to any one of claim 9 to 11, it is characterized in that, described channel width flag comprises the one or more positions in the media access control frame of described message frame.
The identification method of 15. channel widths according to claim 14, is characterized in that, described channel width message identification position is one or more positions of the frame head part of media access control frame in described message frame.
The identification method of 16. channel widths according to claim 14, is characterized in that, described channel width message identification position is one or more positions of the body section of media access control frame in described message frame.
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| CN105025587A (en) * | 2014-07-29 | 2015-11-04 | 魅族科技（中国）有限公司 | Wireless local area network access method, equipment and system |
| CN105704727A (en) * | 2016-03-15 | 2016-06-22 | 珠海市魅族科技有限公司 | Wireless local area network communication method, communication device and access point |
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