CN103379544A - Method, device and system for determining communication transmission mode - Google Patents

Method, device and system for determining communication transmission mode Download PDF

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Publication number
CN103379544A
CN103379544A CN2012101214193A CN201210121419A CN103379544A CN 103379544 A CN103379544 A CN 103379544A CN 2012101214193 A CN2012101214193 A CN 2012101214193A CN 201210121419 A CN201210121419 A CN 201210121419A CN 103379544 A CN103379544 A CN 103379544A
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CN
China
Prior art keywords
transmission mode
described frame
frame
modulation system
carrier wave
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Granted
Application number
CN2012101214193A
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Chinese (zh)
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CN103379544B (en
Inventor
李云波
杨讯
罗毅
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Global Innovation Polymerization LLC
Gw Partnership Co ltd
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Huawei Technologies Co Ltd
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Priority to CN201210121419.3A priority Critical patent/CN103379544B/en
Priority to PCT/CN2012/087811 priority patent/WO2013159553A1/en
Publication of CN103379544A publication Critical patent/CN103379544A/en
Application granted granted Critical
Publication of CN103379544B publication Critical patent/CN103379544B/en
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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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • 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
    • H04L5/0094—Indication of how sub-channels of the path are allocated

Abstract

The invention discloses a method for determining a communication transmission mode so as to obtain the transmission mode. An initial transmission mode comprises a single-user open loop mode larger than or equal to 2MHz or a single-user beam forming mode larger than or equal to 2MHz or a multiple-user mode larger than or equal to 2MHz. Data to be sent are packaged to a frame according to the obtained transmission mode, a preamble of the frame comprises two indications used for identifying the transmission mode, the two indications are used for enabling a receiving end to identify the transmission mode of the frame to be a single user or multiple users according to the first indication, and to identify the transmission mode of the frame to be of an open loop or beam forming according to the second indication; the frame is sent to the receiving end according to the transmission mode. According to the technical scheme of the embodiment, three transmission modes, larger than or equal to 2MHz, of the frame can be distinguished, and accuracy of data processing is improved.

Description

Determine method, the Apparatus and system of communications pattern
Technical field
The present invention relates to communication technical field, be specifically related to method, the Apparatus and system of a definite communications pattern.
Background technology
There is multiple different transmitting scene in the wireless transmitting system, as: different bandwidth, alone family/multi-user, whether support beam forming etc.When frame transmits, can design leading (Preamble) of multiple different frame, the header of the leading namely frame of frame satisfies different use scenes.
Can be divided into 1MHz according to bandwidth at present and more than or equal to 2MHz two classes, and more than or equal to being divided into open loop (SU-OL in alone family among the 2MHz, single user-open loop), alone family beam forming (SU-BF, single user-beamforming), three kinds of different patterns of multi-user (multiple user, MU).Wherein SU-BF adopts the frame format identical with MU for newly-increased pattern.
1MHz and dual mode is arranged more than or equal to 2MHz bandwidth mode identification.The first is the long training domain (LTF that utilizes in frame leading, long training field) sequence detects (autodetection) automatically, its principle for by design so that the LTF sequence quadrature of the LTF sequence of 1MHz and 2MHz, thereby receiving terminal can be distinguished by orthogonality the transmission mode of two kinds of different bandwidths; The second is the automatic detection mode of constellation rotation, its principle is the OFDM (OFDM of the 3rd LTF in the 1MHz pattern, Orthogonal Frequency Division Multiplexing) symbol uses fixing biphase phase shift keying (BPSK, Binary Phase Shift Keying) modulation, and corresponding to it the (SIG of signal identification in the 2MHz pattern, Singal) first OFDM symbol adopts Orthogonal Double phase shift keying (QBPSK, Quadrature Binary Phase Shift Keying) modulation, BPSK is the modulation of I road, QBPSK is modulated to the modulation of Q road, I road and Q road quadrature, this moment, receiving terminal just can be distinguished the transmission mode of two kinds of different bandwidths by the Energy distribution that detects I road and Q road.
In the prior art, realize more than or equal to the alone family in the MHz pattern and the multi-user mode modulation system by second OFDM symbol of SIG that single user mode adopts the QBPSK modulation, and multi-user mode adopts the BPSK modulation.For comprising three different patterns in the pattern more than or equal to 2MHz: the open loop of alone family, alone family beam forming and multi-user, prior art can not distinguish these three kinds of patterns, can cause receiving terminal can't normally read the data that encapsulate in the frame.
Summary of the invention
The embodiment of the invention provides a kind of method of definite communications pattern, three kinds of transmission modes more than or equal to the frame of 2MHz can be distinguished, and has improved the accuracy that data are processed.The embodiment of the invention also provides corresponding Apparatus and system.
A kind of method of definite communications pattern comprises:
Obtain transmission mode, described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern or more than or equal to the 2MHz multi-user mode;
Data to be sent are encapsulated framing according to the described transmission mode of obtaining, comprise be used to two indications that identify described transmission mode in described frame leading, it is alone family or multi-user according to the transmission mode that first indication wherein identifies described frame that described two indications are used for making receiving terminal, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming;
According to described transmission mode, send described frame to receiving terminal.
A kind of method of transmission mode of definite communication frame comprises:
Comprise be used to two indications that identify described transmission mode in the frame that receiving end/sending end sends, described frame leading;
Obtain described two indications in described frame leading, the transmission mode that identifies described frame according to first indication wherein is alone family or multi-user, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming;
Wherein, described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
A kind of transmitting terminal device comprises:
The first acquiring unit is used for obtaining transmission mode, and described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern or more than or equal to the 2MHz multi-user mode;
Encapsulation unit, be used for data to be sent are encapsulated framing according to the transmission mode that described the first acquiring unit obtains, comprise be used to two indications that identify described transmission mode in described frame leading, it is alone family or multi-user according to the transmission mode that first indication wherein identifies described frame that described two indications are used for making receiving terminal, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming;
Transmitting element is used for according to described transmission mode, sends the frame of described encapsulation unit encapsulation to receiving terminal.
A kind of receiving end device comprises:
Receiving element is used for the frame that receiving end/sending end sends, and comprises be used to two indications that identify described transmission mode in described frame leading;
Second acquisition unit is used for obtaining leading described two indications of the frame that described receiving element receives;
Recognition unit, the transmission mode that identifies described frame for wherein first indication of obtaining according to described second acquisition unit is alone family or multi-user, the transmission mode that wherein second indication of obtaining according to described the first acquiring unit identifies described frame is open loop or beam forming, wherein, described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
A kind of system of definite communications pattern comprises: transmitting terminal device and receiving end device;
Described transmitting terminal device is the described device of technique scheme;
Described transmitting terminal device is the described device of technique scheme.
The embodiment of the invention adopts and obtains transmission mode, and described initial transmission pattern comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern or more than or equal to the 2MHz multi-user mode; Data to be sent are encapsulated framing according to the described transmission mode of obtaining, comprise be used to two indications that identify described transmission mode in described frame leading, it is alone family or multi-user according to the transmission mode that first indication wherein identifies described frame that described two indications are used for making receiving terminal, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming; According to described transmission mode, send described frame to receiving terminal.Compare with the transmission mode that can't distinguish in the prior art more than or equal to three kinds of frames of 2MHz, the technical scheme that the embodiment of the invention provides can distinguish three kinds of transmission modes more than or equal to the frame of 2MHz, has improved the accuracy that data are processed.
Description of drawings
Fig. 1 is an embodiment schematic diagram of method in the embodiment of the invention;
Fig. 2 is another embodiment schematic diagram of method in the embodiment of the invention;
Fig. 3 is an embodiment schematic diagram of transmitting terminal of the present invention;
Fig. 4 is an embodiment schematic diagram of receiving terminal of the present invention;
Fig. 5 is an embodiment schematic diagram of system of the present invention.
Embodiment
The embodiment of the invention provides a kind of method of definite communications pattern, three kinds of transmission modes more than or equal to the frame of 2MHz can be distinguished, and has improved the accuracy that data are processed.The embodiment of the invention also provides corresponding Apparatus and system.Below be elaborated respectively.
Receiving terminal in the embodiment of the invention also can be transmitting terminal, transmitting terminal also can be receiving terminal, such as website (STA, Station), access point (AP, Access Point), the transmitting terminal that the embodiment of the invention provides and receiving terminal all have the sending and receiving dual-use function, just because of in the mutual process of concrete primary information, play the part of different role, and be divided into receiving terminal and transmitting terminal.
Consult Fig. 1, from the angle of transmitting terminal, an embodiment of definite communications pattern that the embodiment of the invention provides comprises:
101, obtain transmission mode.
Transmitting terminal will obtain first the transmission mode of frame before encapsulating data framing, the transmission mode of frame comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
102, comprise be used to two indications that identify described transmission mode in the transmission mode encapsulation framing of data to be sent being obtained according to described, described frame leading.
It is alone family or multi-user according to the transmission mode that first indication wherein identifies described frame that described two indications are used for making receiving terminal, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming.
Frame (Frame) is that data are in the unit of transmission over networks, " frame " is comprised of two parts: the leading and frame data of frame, the leading of frame can be used for doing synchronously, channel estimating, frame information indication etc., can comprise bandwidth in the frame information indication field (such as SIG), coding, the information such as modulation type, frame transmits to divide according to bandwidth in network has 1MHz and more than or equal to 2MHz two classes, wherein the transmission mode of 1MHz has a kind of, transmission mode more than or equal to 2MHz has three kinds, is respectively more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
The form of the frame of every kind of transmission mode is different, such as following table:
The frame format of the pattern of table 1:1MHz
STF1 LTF1 SIG LTF2～LTFN Data
Table 2: more than or equal to the frame format of the alone family of 2MHz open loop mode
STF LTF1 SIG LTF2～LTFN Data
Table 3: more than or equal to the frame format of the alone family of 2MHz beam forming/multi-user mode
STF LTF1 SIGA MU-STF MU-LTF1～MU-LTFN SIGB Data
Wherein alone family beam forming and multi-user's frame format is identical, and in fact multi-user mode is exactly multi-user beam moulding pattern.
Related SIG field comprises more than or equal to the SIG field of the alone family of 2MHz open loop mode with more than or equal to the SIGA field of 2MHz beam forming pattern and multi-user mode in the embodiment of the invention.
The described transmission mode encapsulation framing that data to be sent are obtained according to described, specifically comprise: determine the leading of described frame, the modulation system of the portion of carriers of an OFDM symbol in the leading SIG field of described frame is indicated as first, and the modulation system of another part carrier wave is as second indication; Wherein, when the transmission mode that is used to indicate described frame when the modulation system of described portion of carriers is alone family or multi-user, the transmission mode that the modulation system of described another part carrier wave is used to indicate described frame is open loop or beam forming, when the transmission mode that perhaps is used to indicate described frame when the modulation system of described portion of carriers was open loop or beam forming, the transmission mode that the modulation system of described another part carrier wave is used to indicate described frame was alone family or multi-user.
The described transmission mode encapsulation framing that data to be sent are obtained according to described, specifically comprise: determine the leading of described frame, the modulation system of the carrier wave of first OFDM symbol in the leading SIG field of described frame is indicated as first, and the modulation system of the carrier wave of second OFDM symbol is as second indication; Wherein, when the transmission mode that is used to indicate described frame when the modulation system of the carrier wave of described first OFDM symbol is alone family or multi-user, the transmission mode that the modulation system of the carrier wave of described second OFDM symbol is used to indicate described frame is open loop or beam forming, when the transmission mode that perhaps is used to indicate described frame when the modulation system of the carrier wave of described first OFDM symbol was open loop or beam forming, the transmission mode that the modulation system of the carrier wave of described second OFDM symbol is used to indicate described frame was alone family or multi-user.
When described transmission mode also comprises the 1MHz bandwidth mode, four kinds of states after described two kinds of indication combinations are respectively applied to indicate 1MHz bandwidth mode, described more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
The described transmission mode encapsulation framing that data to be sent are obtained according to described, specifically comprise: determine the leading of described frame, the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame is indicated as first, and with the indication bit that arranges in the described SIG field as second indication;
When the transmission mode that is used to indicate described frame when the modulation system of the carrier wave of described OFDM symbol is alone family or multi-user, the transmission mode that described indication bit is used to indicate described frame is open loop or beam forming, perhaps, the transmission mode that is used to indicate described frame when the modulation system of the carrier wave of described OFDM symbol is open loop or beam forming, and the transmission mode that described indication bit is used to indicate described frame is alone family or multi-user.
The described transmission mode encapsulation framing that data to be sent are obtained according to described, specifically comprise: determine the leading of described frame, the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame is indicated as first, and will the numerical value of group sign (GID, Group ID) be set as second indication in the described SIG field; Wherein, the transmission mode that the modulation system of the carrier wave of described OFDM symbol is used to indicate described frame is open loop or beam forming, the transmission mode that specific GID numerical value is used to indicate described frame is alone family, and the transmission mode that other GID numerical value is used to indicate described frame is the multi-user.For example GID represents with 6 bits, and numerical value is 0～63 so, can be with the 0 or 63 alone families that represent appointment, other numeric representation multi-user except 0 or 63.
The described transmission mode encapsulation framing that data to be sent are obtained according to described, specifically comprise: determine the leading of described frame, the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame is indicated as first, and will the numerical value of MCS be set as second indication in the described SIG field; Wherein, the transmission mode that the modulation system of the carrier wave of described OFDM symbol is used to indicate described frame is open loop or beam forming, the transmission mode that the numerical value of MCS in the scope of appointment is used to indicate described frame is alone family, and the transmission mode that is used to indicate described frame at the numerical value of the extraneous MCS of appointment is the multi-user.For example MCS represents with 4 bits, and numerical value is 0～15 so, can be with 0～9 scope that represents appointment, when the numerical value of MCS is 0～9 any number, represent alone family so, and when the numerical value of MCS is not in 0～9 scope, such as 15, the expression multi-user.Can be by the real MCS value of the part of the MCS field designation data in SIGB in the multi-user transmission pattern.
Above SIG field comprises more than or equal to the SIG field of the alone family of 2MHz open loop mode with more than or equal to the SIGA field of 2MHz beam forming pattern and multi-user mode.
Modulation system in the embodiment of the invention can be biphase phase shift keying BPSK modulation or Orthogonal Double phase shift keying QBPSK modulation.
103, according to described transmission mode, send described frame to receiving terminal.
After transmitting terminal sends to receiving terminal with packaged frame, the scheme that receiving terminal just provides according to above-described embodiment, the transmission mode that identifies described frame according to first indication wherein is alone family or multi-user, the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming, and described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
In the embodiment of the invention, obtain transmission mode, described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern or more than or equal to the 2MHz multi-user mode; Data to be sent are encapsulated framing according to the described transmission mode of obtaining, comprise be used to two indications that identify described transmission mode in described frame leading, it is alone family or multi-user according to the transmission mode that first indication wherein identifies described frame that described two indications are used for making receiving terminal, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming; According to described transmission mode, send described frame to receiving terminal.Compare with the transmission mode that can't distinguish in the prior art more than or equal to three kinds of frames of 2MHz, the technical scheme that the embodiment of the invention provides, the transmitting terminal device that the embodiment of the invention provides, when encapsulation of data, according to transmission mode indication is set, receiving terminal can be distinguished three kinds of transmission modes more than or equal to the frame of 2MHz, improved the accuracy that data are processed.
Consult Fig. 2, from the angle of receiving terminal, determine in the embodiment of the invention that another embodiment of the method for communications pattern comprises:
201, comprise be used to two indications that identify described transmission mode in the frame that sends of receiving end/sending end, described frame leading.
After receiving terminal receives frame, determine first the transmission mode of described frame, like this, could be correct read frame data.
202, obtain described two indications in described frame leading.
In the embodiment of the invention, be directed to two OFDM (OFDM are arranged in the SIG field in the table 2, Orthogonal Frequency Division Multiplexing) symbol, SIG can be divided into SIG1 and SIG2, an OFDM symbol is arranged in the SIG1 field, an OFDM symbol is arranged in the SIG2 field, can be divided into SIGA1 and SIGA2 too for the SIGA in the table 3, an OFDM symbol is arranged in the SIGA1 field, an OFDM symbol is arranged in the SIGA2 field.
When the transmitting terminal encapsulated frame, transmitting terminal can be divided into two parts with one of them OFDM symbol, the carrier wave of a part of OFDM symbol wherein can be adopted biphase phase shift keying (BPSK, Binary Phase Shift Keying) modulation, also can adopt Quadrature Phase Shift Keying (QBPSK, Quadrature Binary Phase Shift Keying) modulation, the carrier wave of another part OFDM symbol can adopt the BPSK modulation, also can adopt the QBPSK modulation, if adopt the BPSK modulation, the Energy distribution of frame is on the I road so, if adopt the QBPSK modulation, the Energy distribution of frame is on the Q road so.
Described described two indications of obtaining in described frame leading specifically comprise: by detecting the Energy distribution of frame, obtain the modulation system of two parts carrier wave of an orthogonal frequency division multiplex OFDM symbol in the leading information indication SIG field of described frame.
By energy measuring, if the Energy distribution that detects, illustrates that what adopt is the BPSK modulation on the I road, if the Energy distribution that detects, illustrate that what adopt is that QBPSK modulates on the Q road.
Below just obtain wherein a kind of way of example of described two indications, can also be:
Described described two indications of obtaining in described frame leading, specifically comprise: by detecting the Energy distribution of frame, obtain the modulation system of the carrier wave of the modulation system of carrier wave of first OFDM symbol in the leading SIG field of described frame and second OFDM symbol.
This mode is, when the transmitting terminal encapsulated frame, the part or all of carrier wave of first OFDM symbol is adopted the BPSK modulation or adopts the QBPSK modulation, the part or all of carrier wave of second OFDM symbol is adopted the BPSK modulation or adopts the QBPSK modulation, if adopt the BPSK modulation, the Energy distribution of frame is on the I road so, if adopt the QBPSK modulation, the Energy distribution of frame is on the Q road so.
Obtain wherein a kind of way of example of described two indications, can also be:
Described described two indications of obtaining in described frame leading specifically comprise: by detecting the Energy distribution of frame, obtain the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame, and obtain the indication bit in the described SIG field.
This mode is, when the transmitting terminal encapsulated frame, with part or all of carrier wave employing BPSK modulation or the employing QBPSK modulation of one of them OFDM symbol, if adopt the BPSK modulation, the Energy distribution of frame is on the I road so, if adopt the QBPSK modulation, the Energy distribution of frame is on the Q road so.
Obtain wherein a kind of way of example of described two indications, can also be:
Described described two indications of obtaining in described frame leading, specifically comprise: by detecting the Energy distribution of frame, obtain the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame, and obtain the numerical value of modulating-coding type MCS in the described SIG field.
This mode is, when the transmitting terminal encapsulated frame, with part or all of carrier wave employing BPSK modulation or the employing QBPSK modulation of one of them OFDM symbol, if adopt the BPSK modulation, the Energy distribution of frame is on the I road so, if adopt the QBPSK modulation, the Energy distribution of frame is on the Q road so.
Several schemes that more than provide, in fact in use, receiving terminal and transmitting terminal can only adopt wherein a kind of, that is to say if the agreement of receiving terminal and transmitting terminal is stipulated, if only use the first, so when encapsulated frame, second OFDM symbol can be divided into two parts, the carrier wave of every part OFDM symbol can adopt BPSK to transfer, and also can adopt the QBPSK modulation, receiving terminal detects the Energy distribution of two parts carrier wave of second OFDM symbol when detected energy.
Other several schemes when agreement is stipulated, reason is identical, in case agreement determine, be used for distinguishing the transmission mode of frame with regard to the mode that adopts its agreement.
203, the transmission mode that identifies described frame according to first indication wherein is alone family or multi-user, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming.
Described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
Described basis wherein first indication transmission mode of identifying described frame is alone family or multi-user, the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming, specifically comprise: according to the modulation system of portion of carriers wherein, the transmission mode of determining described frame is alone family or multi-user, according to the modulation system of another part carrier wave wherein, the transmission mode of determining described frame is open loop or beam forming.
Through twice energy measuring, detect energy on the I road, can determine to have adopted the BPSK modulation, detected energy on the Q road, can determine to have adopted the QBPSK modulation, if the agreement that receiving terminal and transmitting terminal pre-establish is (BPSK, BPSK) representative alone family open loop, (BPSK, QBPSK) the alone family of representative beam forming, (QBPSK, QBPSK) represents the multi-user, just can determine so the transmission mode of frame by twice energy measuring.Certainly, the agreement regulation also can be other forms, and the meaning that refers to of BPSK and QBPSK is not done restriction.
Described transmission mode also comprises the 1MHz bandwidth mode; When described transmission mode also comprises the 1MHz bandwidth mode, four kinds of states after described two kinds of indication combinations are respectively applied to indicate 1MHz bandwidth mode, described more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
When twice energy measuring arranged, can determine according to twice definite modulation system the transmission mode of frame; When energy measuring for once, can only determine alone family or multi-user according to modulation system so, perhaps, determine open loop or beam forming, if also got access to indication bit, such as 0 or 1, then can agreement stipulate (BPSK, 0) representative alone family open loop, the alone family of (BPSK, 1) representative beam forming, (QBPSK, 1) represents the multi-user, the transmission means that just can determine frame according to the modulation system that detects and indication bit so.Certainly, also can represent alone family or multi-user with indication bit, as (0, BPSK) representative alone family open loop, present embodiment is not done restriction to BPSK, Q BPSK, 0,1 indicative significance.
When for once energy measuring inspection, according to described modulation system, the transmission mode of determining described frame is open loop or beam forming, can also determine alone family or multi-user according to the numerical value of group sign GID in the SIG field, as when as described in GID when being special value, the transmission mode of determining described frame is alone family, when the numerical value of described GID is not equal to this special value, determines that the transmission mode of described frame is the multi-user.For example GID represents with 6 bits, and numerical value is 0～63 so, can represent alone family with 0 or 63, when the numerical value of GID is not 0 or 63, and the expression multi-user.
When for once energy measuring inspection, according to described modulation system, the transmission mode of determining described frame is open loop or beam forming, can also determine alone family or multi-user according to the numerical value of modulating-coding type MCS in the SIG field, as when as described in the scope of numerical value in appointment of MCS the time, the transmission mode of determining described frame is alone family, when outside the scope of numerical value in appointment of described MCS, determines that the transmission mode of described frame is the multi-user.For example MCS represents with 4 bits, and numerical value is 0～15 so, can be with 0～9 scope that represents appointment, when the numerical value of MCS is 0～9 any number, represent alone family so, and when the numerical value of MCS is not in 0～9 scope, such as 15, the expression multi-user.Can be by the real MCS value of the part of the MCS field designation data in SIGB in the multi-user transmission pattern.
Above SIG field comprises＞the SIG field of the alone family of 2MHz open loop mode and＞the SIGA field of 2MHz beam forming pattern and multi-user mode.
Modulation system in the embodiment of the invention is biphase phase shift keying BPSK modulation or Orthogonal Double phase shift keying QBPSK modulation.
In the embodiment of the invention, comprise be used to two indications that identify described transmission mode in the frame that receiving end/sending end sends, described frame leading; Obtain described two indications in described frame leading; The transmission mode that identifies described frame according to first indication wherein is alone family or multi-user, the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming, and described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.Compare with the transmission mode that can't distinguish in the prior art more than or equal to three kinds of frames of 2MHz, the technical scheme that the embodiment of the invention provides can distinguish three kinds of transmission modes more than or equal to the frame of 2MHz, has improved the accuracy that data are processed.
The embodiment of the invention provides the device of realizing said method, for example access point AP or the site STA in the WLAN (wireless local area network).Concrete device can be realized step and the flow process of said method, and device can be carried out said method in concrete communication process, and finishes according to the method described above communication.
Consult Fig. 3, an embodiment of the transmitting terminal device that the embodiment of the invention provides comprises:
The first acquiring unit 301 is used for obtaining transmission mode, and described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern or more than or equal to the 2MHz multi-user mode;
Encapsulation unit 302, be used for data to be sent are encapsulated framing according to the transmission mode that described the first acquiring unit 301 obtains, comprise be used to two indications that identify described transmission mode in described frame leading, it is alone family or multi-user according to the transmission mode that first indication wherein identifies described frame that described two indications are used for making receiving terminal, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming;
Transmitting element 303 is used for according to described transmission mode, sends the frame of described encapsulation unit 302 encapsulation to receiving terminal.
In the embodiment of the invention, the first acquiring unit 301 obtains transmission mode, and described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern or more than or equal to the 2MHz multi-user mode; Encapsulation unit 302 obtains data to be sent according to described the first acquiring unit 301 transmission mode encapsulation framing, comprise be used to two indications that identify described transmission mode in described frame leading, it is alone family or multi-user according to the transmission mode that first indication wherein identifies described frame that described two indications are used for making receiving terminal, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming; Transmitting element 303 sends the frame of described encapsulation unit 302 encapsulation according to described transmission mode to receiving terminal.Compared with prior art, the transmitting terminal device that the embodiment of the invention provides when encapsulation of data, arranges indication according to transmission mode, and receiving terminal can be distinguished three kinds of transmission modes more than or equal to the frame of 2MHz, has improved the accuracy that data are processed.
On the basis of embodiment corresponding to above-mentioned Fig. 3, another embodiment of the transmitting terminal device that the embodiment of the invention provides comprises:
Described encapsulation unit 302 concrete is used for determining the leading of described frame, and the modulation system of the portion of carriers of an OFDM symbol in the leading SIG field of described frame is indicated as first, and the modulation system of another part carrier wave is as second indication; Wherein, when the transmission mode that is used to indicate described frame when the modulation system of described portion of carriers is alone family or multi-user, the transmission mode that the modulation system of described another part carrier wave is used to indicate described frame is open loop or beam forming, when the transmission mode that perhaps is used to indicate described frame when the modulation system of described portion of carriers was open loop or beam forming, the transmission mode that the modulation system of described another part carrier wave is used to indicate described frame was alone family or multi-user.
On the basis of embodiment corresponding to above-mentioned Fig. 3, another embodiment of the transmitting terminal device that the embodiment of the invention provides comprises:
Described encapsulation unit 302 concrete is used for determining the leading of described frame, and the modulation system of the carrier wave of first OFDM symbol in the leading SIG field of described frame is indicated as first, and the modulation system of the carrier wave of second OFDM symbol is as second indication; Wherein, when the transmission mode that is used to indicate described frame when the modulation system of the carrier wave of described first OFDM symbol is alone family or multi-user, the transmission mode that the modulation system of the carrier wave of described second OFDM symbol is used to indicate described frame is open loop or beam forming, when the transmission mode that perhaps is used to indicate described frame when the modulation system of the carrier wave of described first OFDM symbol was open loop or beam forming, the transmission mode that the modulation system of the carrier wave of described second OFDM symbol is used to indicate described frame was alone family or multi-user.
On the basis of embodiment corresponding to above-mentioned Fig. 3, another embodiment of the transmitting terminal device that the embodiment of the invention provides comprises:
Described encapsulation unit 302 concrete is used for determining the leading of described frame, the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame is indicated as first, and with the indication bit that arranges in the described SIG field as second indication; Wherein, when the transmission mode that is used to indicate described frame when the modulation system of the carrier wave of described OFDM symbol is alone family or multi-user, the transmission mode that described indication bit is used to indicate described frame is open loop or beam forming, perhaps, the transmission mode that is used to indicate described frame when the modulation system of the carrier wave of described OFDM symbol is open loop or beam forming, and the transmission mode that described indication bit is used to indicate described frame is alone family or multi-user.
On the basis of embodiment corresponding to above-mentioned Fig. 3, another embodiment of the transmitting terminal device that the embodiment of the invention provides comprises:
Described encapsulation unit 302 concrete is used for determining the leading of described frame, the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame is indicated as first, and will the numerical value of GID be set as second indication in the described SIG field; Wherein, the transmission mode that the modulation system of the carrier wave of described OFDM symbol is used to indicate described frame is open loop or beam forming, indicating the transmission mode of described frame with the numerical value of specific GID is alone family, and the transmission mode that is used to indicate described frame with the GID value except special value is the multi-user.
On the basis of embodiment corresponding to above-mentioned Fig. 3, another embodiment of the transmitting terminal device that the embodiment of the invention provides comprises:
Described encapsulation unit 302 concrete is used for determining the leading of described frame, the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame is indicated as first, and will the numerical value of MCS be set as second indication in the described SIG field; Wherein, the transmission mode that the modulation system of the carrier wave of described OFDM symbol is used to indicate described frame is open loop or beam forming, the transmission mode that the numerical value of MCS in the scope of appointment is used to indicate described frame is alone family, and the transmission mode that is used to indicate described frame at the numerical value of the extraneous MCS of appointment is the multi-user.
More than, the transmitting terminal device that a plurality of embodiment of the present invention provide when encapsulation of data, arranges indication according to transmission mode, and receiving terminal can be distinguished three kinds of transmission modes more than or equal to the frame of 2MHz, has improved the accuracy that data are processed.
Consult Fig. 4, an embodiment of the receiving end device that the embodiment of the invention provides comprises:
Receiving element 401 is used for the frame that receiving end/sending end sends, and comprises be used to two indications that identify described transmission mode in described frame leading;
Second acquisition unit 402 is used for obtaining leading described two indications of the frame that described receiving element 401 receives;
Recognition unit 403, the transmission mode that identifies described frame for wherein first indication of obtaining according to described second acquisition unit 402 is alone family or multi-user, the transmission mode that wherein second indication of obtaining according to described the first acquiring unit identifies described frame is open loop or beam forming, and described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
In the embodiment of the invention, comprise be used to two indications that identify described transmission mode in the frame that receiving element 401 receiving end/sending ends send, described frame leading; Second acquisition unit 402 obtains described two indications in frame that described receiving element 401 receives leading; The transmission mode that wherein first indication that recognition unit 403 obtains according to described second acquisition unit 402 identifies described frame is alone family or multi-user, the transmission mode that wherein second indication of obtaining according to described the first acquiring unit identifies described frame is open loop or beam forming, and described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.Compared with prior art, the receiving terminal that the embodiment of the invention provides can distinguish three kinds of transmission modes more than or equal to the frame of 2MHz, has improved the accuracy that data are processed.
On the basis of embodiment corresponding to above-mentioned Fig. 4, another embodiment of the receiving terminal that the embodiment of the invention provides comprises:
Described second acquisition unit 402, concrete being used for by detecting the Energy distribution of frame, the leading information of obtaining described frame is indicated the modulation system of two parts carrier wave of an orthogonal frequency division multiplex OFDM symbol in the SIG field;
Described recognition unit 403, the modulation system of concrete wherein portion of carriers for obtaining according to described second acquisition unit 402, the transmission mode of determining described frame is alone family or multi-user, according to the modulation system of another part carrier wave wherein, the transmission mode of determining described frame is open loop or beam forming.
On the basis of embodiment corresponding to above-mentioned Fig. 4, another embodiment of the receiving terminal that the embodiment of the invention provides comprises:
Described second acquisition unit 402, obtains the modulation system of the carrier wave of the modulation system of carrier wave of first OFDM symbol in the leading SIG field of described frame and second OFDM symbol at concrete being used for by detecting the Energy distribution of frame;
Described recognition unit 403, the modulation system of the carrier wave of concrete one of them OFDM symbol for obtaining according to described second acquisition unit 402, the transmission mode of determining described frame is alone family or multi-user, according to the modulation system of the carrier wave of another OFDM symbol wherein, the transmission mode of determining described frame is open loop or beam forming.
On the basis of embodiment corresponding to above-mentioned Fig. 4, another embodiment of the receiving terminal that the embodiment of the invention provides comprises:
Described second acquisition unit 402, obtains the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame, and obtains the indication bit in the described SIG field at concrete being used for by detecting the Energy distribution of frame;
Described recognition unit 403, concrete described modulation system for obtaining according to described second acquisition unit 402, the transmission mode of determining described frame is alone family or multi-user, according to described indication bit, the transmission mode of determining described frame is open loop or beam forming, perhaps, according to described modulation system, the transmission mode of determining described frame is open loop or beam forming, and according to described indication bit, the transmission mode of determining described frame is alone family or multi-user.
On the basis of embodiment corresponding to above-mentioned Fig. 4, another embodiment of the receiving terminal that the embodiment of the invention provides comprises:
Described second acquisition unit 402, obtains the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame, and obtains the numerical value of group sign GID in the described SIG field at concrete being used for by detecting the Energy distribution of frame;
Described recognition unit 403, concrete described modulation system for obtaining according to described second acquisition unit 402, the transmission mode of determining described frame is open loop or beam forming, when the numerical value of described GID is specific numerical value, the transmission mode of determining described frame is alone family, when the numerical value of described GID is not equal to special value, determine that the transmission mode of described frame is the multi-user.
On the basis of embodiment corresponding to above-mentioned Fig. 4, another embodiment of the receiving terminal that the embodiment of the invention provides comprises:
Described second acquisition unit 402, obtains the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame, and obtains the numerical value of modulating-coding type MCS in the described SIG field at concrete being used for by detecting the Energy distribution of frame;
Described recognition unit 403, concrete described modulation system for obtaining according to described second acquisition unit 402, the transmission mode of determining described frame is open loop or beam forming, when in the scope of numerical value in appointment of described MCS, the transmission mode of determining described frame is alone family, when outside the scope of numerical value in appointment of described MCS, determine that the transmission mode of described frame is the multi-user.
More than, the receiving terminal that a plurality of embodiment of the present invention provide can distinguish three kinds of transmission modes more than or equal to the frame of 2MHz, has improved the accuracy that data are processed.
Consult Fig. 5, an embodiment of the system that the embodiment of the invention provides comprises: transmitting terminal device 30 and receiving end device 40;
Transmitting terminal device 30 is used for obtaining transmission mode; With the transmission mode encapsulation framing that data to be sent are obtained according to described, comprise be used to two indications that identify described transmission mode in described frame leading; According to described transmission mode, send described frame to receiving terminal, making receiving terminal is alone family or multi-user according to the transmission mode that first indication wherein identifies described frame, the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming, and described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
Receiving end device 40 is used for the frame that receiving end/sending end sends, and comprises be used to two indications that identify described transmission mode in described frame leading; Obtain described two indications in described frame leading; The transmission mode that identifies described frame according to first indication wherein is alone family or multi-user, the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming, and described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
The system that the embodiment of the invention provides can distinguish three kinds of transmission modes more than or equal to the frame of 2MHz, has improved the accuracy that data are processed.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to come the relevant hardware of instruction finish by program, this program can be stored in the computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.
More than transmission mode method, device and the system of identification frame that the embodiment of the invention is provided be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (27)

1. the method for a definite communications pattern is characterized in that, comprising:
Obtain transmission mode, described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern or more than or equal to the 2MHz multi-user mode;
Data to be sent are encapsulated framing according to the described transmission mode of obtaining, comprise be used to two indications that identify described transmission mode in described frame leading, it is alone family or multi-user according to the transmission mode that first indication wherein identifies described frame that described two indications are used for making receiving terminal, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming;
According to described transmission mode, send described frame to receiving terminal.
2. method according to claim 1 is characterized in that, the described transmission mode encapsulation framing that data to be sent are obtained according to described comprises:
Determine the leading of described frame, indicate the modulation system of the portion of carriers of an OFDM symbol in the SIG field to indicate as first leading information of described frame, the modulation system of another part carrier wave of described OFDM symbol is as second indication;
Wherein, when the transmission mode that is used to indicate described frame when the modulation system of described portion of carriers is alone family or multi-user, the transmission mode that the modulation system of described another part carrier wave is used to indicate described frame is open loop or beam forming, when the transmission mode that perhaps is used to indicate described frame when the modulation system of described portion of carriers was open loop or beam forming, the transmission mode that the modulation system of described another part carrier wave is used to indicate described frame was alone family or multi-user.
3. method according to claim 1 is characterized in that, the described transmission mode encapsulation framing that data to be sent are obtained according to described comprises:
Determine the leading of described frame, the modulation system of the carrier wave of first OFDM symbol in the leading SIG field of described frame indicated as first that modulation system of the carrier wave of second OFDM symbol is as second indication;
Wherein, when the transmission mode that is used to indicate described frame when the modulation system of the carrier wave of described first OFDM symbol is alone family or multi-user, the transmission mode that the modulation system of the carrier wave of described second OFDM symbol is used to indicate described frame is open loop or beam forming, when the transmission mode that perhaps is used to indicate described frame when the modulation system of the carrier wave of described first OFDM symbol was open loop or beam forming, the transmission mode that the modulation system of the carrier wave of described second OFDM symbol is used to indicate described frame was alone family or multi-user.
4. the described method of any one is characterized in that according to claim 1～3, and described transmission mode also comprises the 1MHz bandwidth mode;
Four kinds of states after described two kinds of indication combinations are respectively applied to indicate 1MHz bandwidth mode, described more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
5. method according to claim 1 is characterized in that, the described transmission mode encapsulation framing that data to be sent are obtained according to described comprises:
Determine the leading of described frame, the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame indicated as first, and with the indication bit that arranges in the described SIG field as second indication;
Wherein, when the transmission mode that is used to indicate described frame when the modulation system of the carrier wave of described OFDM symbol is alone family or multi-user, the transmission mode that described indication bit is used to indicate described frame is open loop or beam forming, perhaps, the transmission mode that is used to indicate described frame when the modulation system of the carrier wave of described OFDM symbol is open loop or beam forming, and the transmission mode that described indication bit is used to indicate described frame is alone family or multi-user.
6. method according to claim 1 is characterized in that, the described transmission mode encapsulation framing that data to be sent are obtained according to described comprises:
Determine the leading of described frame, the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame indicated as first, and with the numerical value of the group sign GID that arranges in the described SIG field as second indication;
Wherein, the transmission mode that the modulation system of the carrier wave of described OFDM symbol is used to indicate described frame is open loop or beam forming, the transmission mode that specific GID numerical value is used to indicate described frame is alone family, and the transmission mode that other GID numerical value outside the special value is used to indicate described frame is the multi-user.
7. method according to claim 1 is characterized in that, the described transmission mode encapsulation framing that data to be sent are obtained according to described comprises:
Determine the leading of described frame, the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame is indicated as first, and will the numerical value of MCS be set as second indication in the described SIG field;
Wherein, the transmission mode that the modulation system of the carrier wave of described OFDM symbol is used to indicate described frame is open loop or beam forming, the transmission mode that the numerical value of MCS in the scope of appointment is used to indicate described frame is alone family, and the transmission mode that is used to indicate described frame at the numerical value of the extraneous MCS of appointment is the multi-user.
8. the method for the transmission mode of a definite communication frame is characterized in that, comprising:
Comprise be used to two indications that identify described transmission mode in the frame that receiving end/sending end sends, described frame leading;
Obtain described two indications in described frame leading, the transmission mode that identifies described frame according to first indication wherein is alone family or multi-user, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming;
Wherein, described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
9. method according to claim 8 is characterized in that,
Described described two indications of obtaining in described frame leading comprise:
By detecting the Energy distribution of frame, the leading information of obtaining described frame is indicated the modulation system of two parts carrier wave of an orthogonal frequency division multiplex OFDM symbol in the SIG field;
Described basis wherein first indication transmission mode of identifying described frame is alone family or multi-user, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming, comprising:
According to the modulation system of portion of carriers wherein, the transmission mode of determining described frame is alone family or multi-user, and according to the modulation system of another part carrier wave wherein, the transmission mode of determining described frame is open loop or beam forming.
10. method according to claim 8 is characterized in that,
Described described two indications of obtaining in described frame leading comprise:
By detecting the Energy distribution of frame, obtain the modulation system of the carrier wave of the modulation system of carrier wave of first OFDM symbol in the leading SIG field of described frame and second OFDM symbol;
Described basis wherein first indication transmission mode of identifying described frame is alone family or multi-user, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming, comprising:
According to the modulation system of the carrier wave of one of them OFDM symbol, the transmission mode of determining described frame is alone family or multi-user, and according to the modulation system of the carrier wave of another OFDM symbol wherein, the transmission mode of determining described frame is open loop or beam forming.
11. the described method of any one is characterized in that according to claim 8～10, described transmission mode also comprises the 1MHz bandwidth mode;
Four kinds of states after described two kinds of indication combinations are respectively applied to indicate 1MHz bandwidth mode, described more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
12. method according to claim 8 is characterized in that,
Described described two indications of obtaining in described frame leading comprise:
By detecting the Energy distribution of frame, obtain the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame, and obtain the indication bit in the described SIG field;
Described basis wherein first indication transmission mode of identifying described frame is alone family or multi-user, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming, comprising:
According to described modulation system, the transmission mode of determining described frame is alone family or multi-user, according to described indication bit, the transmission mode of determining described frame is open loop or beam forming, perhaps, according to described modulation system, the transmission mode of determining described frame is open loop or beam forming, according to described indication bit, the transmission mode of determining described frame is alone family or multi-user.
13. method according to claim 8 is characterized in that,
Described described two indications of obtaining in described frame leading comprise:
By detecting the Energy distribution of frame, obtain the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame, and obtain the numerical value of group sign GID in the described SIG field;
Described basis wherein first indication transmission mode of identifying described frame is alone family or multi-user, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming, specifically comprises:
According to described modulation system, the transmission mode of determining described frame is open loop or beam forming, and when the numerical value of described GID was special value, the transmission mode of determining described frame was alone family, when the numerical value of described GID is not equal to special value, determine that the transmission mode of described frame is the multi-user.
14. method according to claim 8 is characterized in that,
Described described two indications of obtaining in described frame leading comprise:
By detecting the Energy distribution of frame, obtain the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame, and obtain the numerical value of modulating-coding type MCS in the described SIG field;
Described basis wherein first indication transmission mode of identifying described frame is alone family or multi-user, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming, comprising:
According to described modulation system, the transmission mode of determining described frame is open loop or beam forming, and when in the scope of numerical value in appointment of described MCS, the transmission mode of determining described frame is alone family, when outside the scope of numerical value in appointment of described MCS, determine that the transmission mode of described frame is the multi-user.
15. a transmitting terminal device is characterized in that, comprising:
The first acquiring unit is used for obtaining transmission mode, and described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern or more than or equal to the 2MHz multi-user mode;
Encapsulation unit, be used for data to be sent are encapsulated framing according to the transmission mode that described the first acquiring unit obtains, comprise be used to two indications that identify described transmission mode in described frame leading, it is alone family or multi-user according to the transmission mode that first indication wherein identifies described frame that described two indications are used for making receiving terminal, and the transmission mode that identifies described frame according to second indication wherein is open loop or beam forming;
Transmitting element is used for according to described transmission mode, sends the frame of described encapsulation unit encapsulation to receiving terminal.
16. device according to claim 15 is characterized in that,
Described encapsulation unit concrete is used for determining the leading of described frame, and the modulation system of the portion of carriers of an OFDM symbol in the leading SIG field of described frame is indicated as first, and the modulation system of another part carrier wave is as second indication; Wherein, when the transmission mode that is used to indicate described frame when the modulation system of described portion of carriers is alone family or multi-user, the transmission mode that the modulation system of described another part carrier wave is used to indicate described frame is open loop or beam forming, when the transmission mode that perhaps is used to indicate described frame when the modulation system of described portion of carriers was open loop or beam forming, the transmission mode that the modulation system of described another part carrier wave is used to indicate described frame was alone family or multi-user.
17. device according to claim 15 is characterized in that,
Described encapsulation unit concrete is used for determining the leading of described frame, and the modulation system of the carrier wave of first OFDM symbol in the leading SIG field of described frame is indicated as first, and the modulation system of the carrier wave of second OFDM symbol is as second indication; Wherein, when the transmission mode that is used to indicate described frame when the modulation system of the carrier wave of described first OFDM symbol is alone family or multi-user, the transmission mode that the modulation system of the carrier wave of described second OFDM symbol is used to indicate described frame is open loop or beam forming, when the transmission mode that perhaps is used to indicate described frame when the modulation system of the carrier wave of described first OFDM symbol was open loop or beam forming, the transmission mode that the modulation system of the carrier wave of described second OFDM symbol is used to indicate described frame was alone family or multi-user.
18. device according to claim 15 is characterized in that,
Described encapsulation unit concrete is used for determining the leading of described frame, the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame is indicated as first, and with the indication bit that arranges in the described SIG field as second indication; Wherein, when the transmission mode that is used to indicate described frame when the modulation system of the carrier wave of described OFDM symbol is alone family or multi-user, the transmission mode that described indication bit is used to indicate described frame is open loop or beam forming, perhaps, the transmission mode that is used to indicate described frame when the modulation system of the carrier wave of described OFDM symbol is open loop or beam forming, and the transmission mode that described indication bit is used to indicate described frame is alone family or multi-user.
19. device according to claim 15 is characterized in that,
Described encapsulation unit concrete is used for determining the leading of described frame, the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame is indicated as first, and will the numerical value of GID be set as second indication in the described SIG field; Wherein, the transmission mode that the modulation system of the carrier wave of described OFDM symbol is used to indicate described frame is open loop or beam forming, the transmission mode that specific GID numerical value is used to indicate described frame is alone family, and the transmission mode that other GID numerical value outside the special value is used to indicate described frame is the multi-user.
20. device according to claim 15 is characterized in that,
Described encapsulation unit concrete is used for determining the leading of described frame, the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame is indicated as first, and will the numerical value of MCS be set as second indication in the described SIG field; Wherein, the transmission mode that the modulation system of the carrier wave of described OFDM symbol is used to indicate described frame is open loop or beam forming, the transmission mode that the numerical value of MCS in the scope of appointment is used to indicate described frame is alone family, and the transmission mode that is used to indicate described frame at the numerical value of the extraneous MCS of appointment is the multi-user.
21. a receiving end device is characterized in that, comprising:
Receiving element is used for the frame that receiving end/sending end sends, and comprises be used to two indications that identify described transmission mode in described frame leading;
Second acquisition unit is used for obtaining leading described two indications of the frame that described receiving element receives;
Recognition unit, the transmission mode that identifies described frame for wherein first indication of obtaining according to described second acquisition unit is alone family or multi-user, the transmission mode that wherein second indication of obtaining according to described the first acquiring unit identifies described frame is open loop or beam forming, wherein, described transmission mode comprises more than or equal to the alone family of 2MHz open loop mode, more than or equal to the alone family of 2MHz beam forming pattern with more than or equal to the 2MHz multi-user mode.
22. device according to claim 21 is characterized in that,
Described second acquisition unit, concrete being used for by detecting the Energy distribution of frame, the leading information of obtaining described frame is indicated the modulation system of two parts carrier wave of an orthogonal frequency division multiplex OFDM symbol in the SIG field;
Described recognition unit, the modulation system of concrete wherein portion of carriers for obtaining according to described second acquisition unit, the transmission mode of determining described frame is alone family or multi-user, and according to the modulation system of another part carrier wave wherein, the transmission mode of determining described frame is open loop or beam forming.
23. device according to claim 21 is characterized in that,
Described second acquisition unit, obtains the modulation system of the carrier wave of the modulation system of carrier wave of first OFDM symbol in the leading SIG field of described frame and second OFDM symbol at concrete being used for by detecting the Energy distribution of frame;
Described recognition unit, the modulation system of the carrier wave of concrete one of them OFDM symbol for obtaining according to described second acquisition unit, the transmission mode of determining described frame is alone family or multi-user, according to the modulation system of the carrier wave of another OFDM symbol wherein, the transmission mode of determining described frame is open loop or beam forming.
24. device according to claim 21 is characterized in that,
Described second acquisition unit, obtains the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame, and obtains the indication bit in the described SIG field at concrete being used for by detecting the Energy distribution of frame;
Described recognition unit, concrete described modulation system for obtaining according to described second acquisition unit, the transmission mode of determining described frame is alone family or multi-user, according to described indication bit, the transmission mode of determining described frame is open loop or beam forming, perhaps, according to described modulation system, the transmission mode of determining described frame is open loop or beam forming, and according to described indication bit, the transmission mode of determining described frame is alone family or multi-user.
25. device according to claim 21 is characterized in that,
Described second acquisition unit, obtains the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame, and obtains the numerical value of group sign GID in the described SIG field at concrete being used for by detecting the Energy distribution of frame;
Described recognition unit, concrete described modulation system for obtaining according to described second acquisition unit, the transmission mode of determining described frame is open loop or beam forming, when the numerical value of described GID equals special value, the transmission mode of determining described frame is alone family, when the numerical value of described GID is not equal to special value, determine that the transmission mode of described frame is the multi-user.
26. device according to claim 21 is characterized in that,
Described second acquisition unit, obtains the modulation system of the carrier wave of an OFDM symbol in the leading SIG field of described frame, and obtains the numerical value of modulating-coding type MCS in the described SIG field at concrete being used for by detecting the Energy distribution of frame;
Described recognition unit, concrete described modulation system for obtaining according to described second acquisition unit, the transmission mode of determining described frame is open loop or beam forming, when in the scope of numerical value in appointment of described MCS, the transmission mode of determining described frame is alone family, when outside the scope of numerical value in appointment of described MCS, determine that the transmission mode of described frame is the multi-user.
27. the system of a definite communications pattern is characterized in that, comprising: transmitting terminal device and receiving end device;
Described transmitting terminal device is the described devices of the claims 15～20 any one;
Described transmitting terminal device is the described devices of the claims 21～26 any one.
CN201210121419.3A 2012-04-23 2012-04-23 Method, device and system for determining communication transmission mode Expired - Fee Related CN103379544B (en)

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Cited By (2)

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