JP2020182238A - Data transmission indication method, access point, and terminal - Google Patents

Abstract

To provide a data transmission indication method, an access point, and a terminal.SOLUTION: A method includes transmitting, by an access point, orthogonal frequency division multiple access OFDMA physical layer signaling to a terminal, where the OFDMA physical layer signaling is used to indicate, to the terminal, a subchannel allocated for the terminal. Thereby, the terminal determines a sub-channel corresponding to the terminal according to the OFDMA physical layer signaling, where the OFDMA physical layer signaling includes an identifier of the terminal and sub-channel information corresponding to the identifier of the terminal. A scheme for the access point to allocate a sub-channel for each terminal according to the OFDMA physical layer signaling in the method provided by an embodiment of the present invention allows the access point to indicate sub-channels for more terminals, that is, the number of terminals the access point indicates sub-channels to is not limited.SELECTED DRAWING: Figure 1

Description

The present invention relates to the field of communication technology, and specifically to data transmission induction methods, access points, and terminals.

Orthogonal Frequency Division Multiplexing (OFDM for short) is the basic transmission method of current wireless communication, where the subcarrier spacing is minimized within the range allowed by the orthogonality of the subcarriers. Compressed to be, thereby forming multiple transmission lines that are parallel and do not interfere with each other, improving the frequency utilization efficiency of the system. The above-mentioned features of OFDM are used in Orthogonal Frequency Division Multiple Access (OFDMA for short), and subcarriers in OFDM that do not interfere with each other are allocated to a plurality of users for multi-user access or data transmission. carry out. Transmitting data in OFDMA mode actually means that the transmitting end synchronizes the data of multiple receiving ends with the receiving end associated with the subchannel by using the subchannel corresponding to the receiving end. (Subchannels herein may include one subcarrier or may include multiple subcarriers).

In the prior art, transmission in OFDMA mode can only support a bandwidth of 20 MHz to perform the transmission, where 20 MHz may be divided into 64 subcarriers, where 48 subcarriers. Is used to transmit user data. In conventional OFDMA technology, the signaling portion (the format of the signaling portion is applicable only to the bandwidth of 20 MHz) is added after the physical layer preamble in the data format, and the signaling portion is added to each subcarrier. It is used to indicate a user assigned to a user, where one subcarrier can only correspond to one user identifier (Identity, hereinafter abbreviated as ID). The transmitting end synchronously transmits data of different users on different subcarriers, and correspondingly, the user receives the data transmitted by the transmitting end on the corresponding subcarriers.

However, when the number of users exceeds 48, there is a bandwidth limitation of 20 MHz. Therefore, in the prior art, for the remaining users other than the 48 users, the remaining users are injected when receiving the transmission end data. Cannot be executed.

The present invention is used to solve a problem in the prior art that for the remaining users other than the 48 users, the indication cannot be performed when the remaining users receive the data at the transmitting end. , Data transmission invention methods, access points, and terminals.

According to the first aspect, the present invention is a data transmission indication method.
The step of transmitting orthogonal frequency split multiple connection OFDMA physical layer signaling to the terminal by the access point, in which OFDMA physical layer signaling is used to indicate to the terminal the subchannels assigned to the terminal, thereby. The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling, and OFDMA physical layer signaling provides a step-enhancing method that includes the terminal identifier and the subchannel information corresponding to the terminal identifier.

With respect to the first aspect, in the first possible implementation of the first aspect, the terminal identifier is an identifier for one or more terminal groups, each terminal group comprising at least one terminal and sub. The channel information includes an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel, in which case OFDMA used to indicate to the terminal the subchannel assigned to the terminal. Physical layer signaling
Each terminal group contains an OFDMA physical layer signaling used to indicate that the allocated subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. And subchannels have a one-to-one correspondence.

With respect to the first possible implementation of the first aspect, in the second possible implementation of the first aspect, the method is performed prior to the step of transmitting OFDMA physical layer signaling to the terminal by the access point.
The access point further includes a step of transmitting a mapping relationship between the terminal group identifier and the terminal address to the terminal, whereby the terminal learns the terminal group in which the terminal is located.

With respect to the first aspect, in the third possible implementation of the first aspect, the terminal identifier is an identifier for one terminal group, the terminal group comprising at least two terminals, in which case the terminals. The OFDMA physical layer signaling used to indicate to the terminal the subchannels assigned to
Each terminal in the terminal group contains OFDMA physical layer signaling used to indicate that the allocated subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. , Each terminal and subchannel in the terminal group has a one-to-one correspondence.

With respect to any one of the first aspect to the third possible implementation method of the first aspect, in the fourth possible implementation method of the first aspect, the orthogonal frequency division multiple access OFDMA physics by the access point. The step of sending layered signaling to the terminal is
The step of transmitting an orthogonal frequency division multiplexing OFDM preamble to the terminal by the access point, the OFDM preamble carries the OFDMA physical layer signaling, or transmits a null data packet announcement NDPA frame to the terminal by the access point. The NDPA frame comprises a step of carrying OFDMA physical layer signaling.

With respect to any one of the first aspect to the third possible implementation method of the first aspect, in the fifth possible implementation method of the first aspect, an orthogonal frequency division multiple access OFDMA physics by an access point. The step of sending layered signaling to the terminal is
Including the step of transmitting NDPA frames and OFDM preambles to the terminal by the access point.
The NDPA frame carries the terminal identifier in OFDMA physical layer signaling, and the OFDM preamble corresponds to the terminal identifier and carries the subchannel information within the OFDMA physical layer signaling, or the NDPA frame carries the terminal's identifier. Corresponding to the identifier, it carries the subchannel information within the OFDMA physical layer signaling, and the OFDM preamble carries the identifier of the terminal in the OFDMA physical layer signaling.

With respect to any one of the first aspect to the fifth possible implementation of the first aspect, in the sixth possible implementation of the first aspect, OFDMA physical layer signaling is downlink OFDMA data information. It is specifically used to indicate to the terminal the subchannels allocated to the terminal to receive, in which case the method is performed after the step of transmitting orthogonal frequency split multiple connection OFDMA physical layer signaling to the terminal by the access point. Is
A step of transmitting downlink OFDMA data information by an access point on a subchannel corresponding to a terminal in OFDMA mode, where the downlink OFDMA data information includes OFDMA preambles and OFDMA data, and the OFDMA preambles are switching fields and Includes additional steps, including ultra-high throughput signaling B UHT-SIG-B.

With respect to the sixth possible implementation of the first aspect, in the seventh possible implementation of the first aspect, the OFDMA physical layer signaling or downlink OFDMA data information is an OFDMA acknowledgment ACK request. ) Or OFDMA block acknowledgment BA request, and the OFDMA ACK or OFDMA BA request is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode. And in that case, OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is sent to the access point and is further used to indicate the subchannel allocated to the terminal, in which case. In addition, after the step of transmitting downlink OFDMA data information by the access point on the subchannel corresponding to the terminal in OFDMA mode, the method is:
The access point further comprises the step of receiving an ACK or BA response transmitted by the terminal on the subchannel corresponding to the terminal in OFDMA mode.

With respect to the sixth possible implementation of the first aspect, in the eighth possible implementation of the first aspect, OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is transmitted to the access point. And used to indicate the subchannel allocated to the terminal, in which case the method is used after the step of transmitting downlink OFDMA data information on the subchannel corresponding to the terminal by the access point. ,
A step of transmitting an ACK request frame or a BA request frame to a terminal by an access point, wherein the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit accesses the ACK response or the BA response in OFDMA mode. Steps and steps used to instruct the terminal to send to the point,
The access point further includes the step of receiving an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

With respect to any one of the first to the third possible implementations of the first aspect, in the ninth possible implementation of the first aspect, the OFDMA physical layer signaling is an OFDMA ACK request or OFDMA. Carrying a BA request, an OFDMA ACK or OFDMA BA request is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode, in which case OFDMA physical layer signaling is performed on the terminal. A ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the access point provides orthogonal frequency split multiple connections. The step of transmitting OFDMA physical layer signaling to the terminal is
A step of transmitting multi-user multi-input multi-output MU-MIMO data information to a terminal in multi-user multi-input multi-output MU-MIMO mode by an access point, wherein the MU-MIMO data information carries OFDMA physical layer signaling. Including steps
In that case, after the step of transmitting the orthogonal frequency division multiple access OFDMA physical layer signaling to the terminal by the access point, the method
The access point further comprises the step of receiving an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

With respect to any one of the first to the third possible implementations of the first aspect, in the tenth possible implementation of the first aspect, OFDMA physical layer signaling corresponds to the terminal. A ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the access point provides orthogonal frequency splitting multiple connection OFDMA physical layer signaling. Steps to send to the terminal
A step of transmitting MU-MIMO data information to a terminal in MU-MIMO mode by an access point, wherein the MU-MIMO data information carries OFDMA physical layer signaling.
A step of transmitting an ACK request frame or a BA request frame to a terminal by an access point, wherein the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit accesses the ACK response or the BA response in OFDMA mode. Including steps, used to instruct the terminal to send to the point
In that case, after the step of transmitting the orthogonal frequency division multiple access OFDMA physical layer signaling to the terminal by the access point, the method
The access point further comprises the step of receiving an ACK or BA response transmitted by the terminal on the subchannel corresponding to the terminal in OFDMA mode.

With respect to any one of the first to third possible implementations of the first aspect, in the eleventh possible implementation of the first aspect, OFDMA physical layer signaling corresponds to the terminal. A ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the access point provides orthogonal frequency splitting multiple connection OFDMA physical layer signaling. Steps to send to the terminal
The step of transmitting MU-MIMO data information to the terminal in MU-MIMO mode by the access point, and
A step of transmitting an ACK request frame or a BA request frame to a terminal by an access point, wherein the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit accesses the ACK response or the BA response in OFDMA mode. Used to instruct the terminal to send to a point, an ACK request frame or BA request frame comprises a step and a step carrying an OFDMA physical layer signaling.
In that case, after the step of transmitting the orthogonal frequency division multiple access OFDMA physical layer signaling to the terminal by the access point, the method
The access point further comprises the step of receiving an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

With respect to any one of the first aspect to the third possible implementation method of the first aspect, in the twelfth possible implementation method of the first aspect, the OFDMA physical layer signaling is an OFDMA ACK request or OFDMA. Carrying a BA request, an OFDMA ACK or OFDMA BA request is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode, in which case OFDMA physical layer signaling is performed on the terminal. Corresponding to, an ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, by the access point orthogonal frequency split multiple connection OFDMA physical layer signaling. After the step of sending to the terminal, the method
A step of transmitting OFDMA + MU-MIMO data information to the terminal on the subchannel corresponding to the terminal in OFDMA + MU-MIMO mode by the access point.
The access point further includes the step of receiving an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

With respect to any one of the first to the third possible implementations of the first aspect, in the thirteenth possible implementation of the first aspect, OFDMA physical layer signaling corresponds to the terminal. A ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, where the access point sends orthogonal frequency split multiple connection OFDMA physical layer signaling to the terminal. After the step, the method
A step of transmitting OFDMA + MU-MIMO data information to the terminal on the subchannel corresponding to the terminal in OFDMA + MU-MIMO mode by the access point.
A step of transmitting an ACK request frame or a BA request frame to a terminal by an access point, wherein the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit accesses the ACK response or the BA response in OFDMA mode. Steps and steps used to instruct the terminal to send to the point,
The access point further includes the step of receiving an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

With respect to any one of the first aspect to the fifth possible implementation method of the first aspect, in the fourteenth possible implementation method of the first aspect, OFDMA physical layer signaling corresponds to the terminal. The uplink OFDMA data information is transmitted to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the access point provides orthogonal frequency splitting multiple connection OFDMA physical layer signaling. Before the step of sending to the terminal, the method
The access point further includes the step of receiving the uplink transmission frame transmitted by the terminal.
In that case, after the step of transmitting the orthogonal frequency division multiple access OFDMA physical layer signaling to the terminal by the access point, the method
The access point further comprises the step of receiving the uplink OFDMA data information transmitted by the terminal on the corresponding subchannel in OFDMA mode.

With respect to the fourteenth possible implementation of the first aspect, in the fifteenth possible implementation of the first aspect, the uplink OFDMA data information carries an OFDMA ACK request or an OFDMA BA request and an OFDMA ACK request or OFDMA. The BA request is further used to instruct the access point to send an ACK or BA response to the terminal in OFDMA mode, in which case the access point sends an update on the corresponding subchannel. After the step of receiving the linked OFDMA data information, the method
The access point further includes the step of transmitting an ACK response or a BA response corresponding to the uplink OFDMA data information on the subchannel corresponding to the terminal in OFDMA mode.

With respect to any one of the first aspect to the fifth possible implementation method of the first aspect, in the sixteenth possible implementation method of the first aspect, OFDMA physical layer signaling corresponds to the terminal. The uplink OFDMA data information is transmitted to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the access point provides orthogonal frequency splitting multiple connection OFDMA physical layer signaling. After the step of sending to the terminal, the method
The access point further comprises the step of receiving the uplink OFDMA data information transmitted by the terminal on the corresponding subchannel in OFDMA mode.

According to the second aspect, the present invention is a data transmission indication method.
The step of receiving the orthogonal frequency split multiple access OFDMA physical layer signaling transmitted by the terminal by the terminal, which is to indicate to the terminal the subchannels allocated by the access point to the terminal. Used, OFDMA physical layer signaling includes a terminal identifier, and subchannel information corresponding to the terminal identifier.
Provided is a method comprising the step of determining a subchannel corresponding to a terminal according to OFDMA physical layer signaling by the terminal.

With respect to the second aspect, in the first possible implementation of the second aspect, the terminal identifier is an identifier for one or more terminal groups, each terminal group comprising at least one terminal and sub. The channel information includes an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel, in which case OFDMA used to indicate to the terminal the subchannel assigned to the terminal. Physical layer signaling
Each terminal group contains an OFDMA physical layer signaling used to indicate that the allocated subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. And subchannels have a one-to-one correspondence.

With respect to the first possible implementation of the second aspect, in the second possible implementation of the second aspect, the step of receiving the orthogonal frequency division multiple access OFDMA physical layer signaling transmitted by the access point by the terminal. Before the method,
The terminal further comprises a step of receiving a mapping relationship between the terminal group identifier and the terminal address, the mapping relationship being transmitted by the access point.
In that case, the step of determining the subchannel corresponding to the terminal according to OFDMA physical layer signaling by the terminal is
The terminal determines that the terminal is arranged in the terminal group according to the mapping relationship, and in that case, the terminal determines that the subchannel corresponding to the terminal group is the subchannel corresponding to the terminal. Including steps.

With respect to the second aspect, in the third possible implementation of the second aspect, the terminal identifier is an identifier for one terminal group, which includes at least two terminals, in which case the terminals. The OFDMA physical layer signaling used to indicate to the terminal the subchannels assigned to
Each terminal in the terminal group contains OFDMA physical layer signaling used to indicate that the allocated subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. , Each terminal and subchannel in the terminal group has a one-to-one correspondence.

With respect to any one of the second aspect to the third possible implementation method of the second aspect, in the fourth possible implementation method of the second aspect, the orthogonal frequency transmitted by the terminal by the access point. The step of receiving split multiple access OFDMA physical layer signaling is
A step of receiving an orthogonal frequency division multiplexing OFDM preamble transmitted by an access point by a terminal, wherein the OFDM preamble carries an OFDMA physical layer signaling, a step, or a null data packet transmitted by an access point by the terminal. Announcement A step of receiving an NDPA frame, the NDPA frame comprising carrying an OFDMA physical layer signaling.

With respect to any one of the second aspect to the third possible implementation method of the second aspect, in the fifth possible implementation method of the second aspect, the orthogonal frequency transmitted by the terminal by the access point. The step of receiving split multiple access OFDMA physical layer signaling is
In the step of receiving the NDPA frame and the OFDM preamble transmitted by the access point by the terminal, the NDPA frame carries the terminal identifier in OFDMA physical layer signaling, and the OFDM preamble corresponds to the terminal identifier and Either carry subchannel information within OFDMA physical layer signaling, or the NDPA frame corresponds to the terminal identifier and carry subchannel information within OFDMA physical layer signaling, and the OFDM preamble carries OFDMA physical layer signaling. Further includes a step carrying the identifier of the terminal in.

With respect to any one of the second to fifth possible implementations of the second aspect, in the sixth possible implementation of the second aspect, OFDMA physical layer signaling is downlink OFDMA data information. It is specifically used to indicate to the terminal the subchannels assigned to the terminal by the access point to receive, in which case after the step of determining the subchannel corresponding to the terminal by the terminal according to OFDMA physical layer signaling. The method is
The step of receiving the downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal by the terminal, the downlink OFDMA data information includes OFDMA preamble and OFDMA data, and the OFDMA preamble is switched. Further includes steps, including field and ultra high throughput signaling B UHT-SIG-B.

With respect to the sixth possible implementation of the second aspect, in the seventh possible implementation of the second aspect, the downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal by the terminal. The steps to receive
A step of receiving OFDMA data by the terminal and receiving a destination terminal address transmitted by the access point,
The step of determining whether the terminal matches the destination terminal address by the terminal,
If there is a match, the terminal specifically includes the step of receiving the downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal.

With respect to the seventh possible implementation of the second aspect, in the eighth possible implementation of the second aspect, the OFDMA physical layer signaling or downlink OFDMA data information is an OFDMA acknowledgment ACK request or an OFDMA block acknowledgment. Carrying a BA request, an OFDMA ACK or OFDMA BA request is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode, in which case OFDMA physical layer signaling is performed on the terminal. In response to, an ACK or BA response is sent to the access point and is further used to indicate the subchannel allocated to the terminal, in which case the terminal is on the subchannel corresponding to the terminal. After the step of receiving the downlink OFDMA data information transmitted by the access point, the method
The terminal further comprises sending an ACK or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

With respect to the seventh possible implementation of the second aspect, in the ninth possible implementation of the second aspect, OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is transmitted to the access point. And is used to indicate the subchannel allocated to the terminal, in which case the terminal receives the downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal. Later, the method
In the step of receiving the ACK request frame or BA request frame transmitted by the access point by the terminal, the ACK request frame or BA request frame includes a dedicated information bit, and the dedicated information bit is an ACK response or BA in OFDMA mode. Steps and steps used to instruct the terminal to send a response to the access point,
The terminal further includes a step of transmitting an ACK response or a BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

With respect to any one of the second aspect to the third possible implementation method of the second aspect, in the tenth possible implementation method of the second aspect, the OFDMA physical layer signaling is an OFDMA ACK request or OFDMA. Carrying a BA request, an OFDMA ACK or OFDMA BA request is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode, in which case OFDMA physical layer signaling is performed on the terminal. Correspondingly, an ACK or BA response was sent to the access point and was specifically used to indicate to the terminal the subchannels assigned to the terminal, in which case it was sent by the terminal and by the access point. Orthogonal Frequency Division Multiple Connections The step of receiving OFDMA physical layer signaling is:
The step of receiving the multi-user multi-input multi-output MU-MIMO data information transmitted by the terminal by the terminal, the MU-MIMO data information comprises a step of carrying OFDMA physical layer signaling.
In that case, after the step of determining the subchannel corresponding to the terminal by the terminal according to OFDMA physical layer signaling, the method
The terminal further comprises sending an ACK or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

With respect to any one of the second to third possible implementations of the second aspect, in the eleventh possible implementation of the second aspect, OFDMA physical layer signaling corresponds to the terminal. An ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels assigned to the terminal, in which case the orthogonal frequency division multiplex transmitted by the access point by the terminal. The step of receiving the connection OFDMA physical layer signaling is
A step of receiving MU-MIMO data information transmitted by an access point by a terminal, wherein the MU-MIMO data information carries OFDMA physical layer signaling.
In the step of receiving the ACK request frame or BA request frame transmitted by the access point by the terminal, the ACK request frame or BA request frame includes a dedicated information bit, and the dedicated information bit is an ACK response or BA in OFDMA mode. Includes steps and steps used to instruct the terminal to send a response to the access point.
In that case, after the step of determining the subchannel corresponding to the terminal by the terminal according to OFDMA physical layer signaling, the method
The terminal further comprises sending an ACK or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

With respect to any one of the second to third possible implementations of the second aspect, in the twelfth possible implementation of the second aspect, OFDMA physical layer signaling corresponds to the terminal. An ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels assigned to the terminal, in which case the orthogonal frequency division multiplex transmitted by the access point by the terminal. The step of receiving the connection OFDMA physical layer signaling is
The step of receiving the MU-MIMO data information transmitted by the access point by the terminal, and
In the step of receiving the ACK request frame or BA request frame transmitted by the access point by the terminal, the ACK request frame or BA request frame includes a dedicated information bit, and the dedicated information bit is an ACK response or BA in OFDMA mode. Used to instruct the terminal to send a response to the access point, an ACK or BA request frame comprises a step and a step carrying an OFDMA physical layer signaling.
In that case, after the step of determining the subchannel corresponding to the terminal by the terminal according to OFDMA physical layer signaling, the method
The terminal further comprises sending an ACK or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

With respect to any one of the second to third possible implementations of the second aspect, in the thirteenth possible implementation of the second aspect, the OFDMA physical layer signaling is an OFDMA ACK request or OFDMA. Carrying a BA request, an OFDMA ACK or OFDMA BA request is used to instruct a terminal to send an ACK or BA response to an access point in OFDMA mode, in which case OFDMA physical layer signaling is performed on the terminal. Correspondingly, an ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the terminal follows the OFDMA physical layer signaling. After the step of determining the subchannel corresponding to, the method
The step of receiving OFDMA + MU-MIMO data information transmitted by the access point on the subchannel corresponding to the terminal by the terminal, and
The terminal further includes a step of transmitting an ACK response or a BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

With respect to any one of the second aspect to the third possible implementation method of the second aspect, in the fourteenth possible implementation method of the second aspect, OFDMA physical layer signaling corresponds to the terminal. An ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels assigned to the terminal, in which case the terminal corresponds to the terminal according to OFDMA physical layer signaling. After the step of determining the channel, the method
The step of receiving OFDMA + MU-MIMO data information transmitted by the access point on the subchannel corresponding to the terminal by the terminal, and
In the step of receiving the ACK request frame or BA request frame transmitted by the access point by the terminal, the ACK request frame or BA request frame includes a dedicated information bit, and the dedicated information bit is an ACK response or BA in OFDMA mode. Steps and steps used to instruct the terminal to send a response to the access point,
The terminal further includes a step of transmitting an ACK response or a BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

With respect to any one of the second to fifth possible implementations of the second aspect, in the fifteenth possible implementation of the second aspect, OFDMA physical layer signaling corresponds to the terminal. The uplink OFDMA data information is transmitted to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the orthogonal frequency division multiplex transmitted by the terminal by the access point. Prior to the step of receiving the connection OFDMA physical layer signaling, the method
The terminal further includes a step of transmitting an uplink transmission frame to the access point.
In that case, after the step of determining the subchannel corresponding to the terminal by the terminal according to OFDMA physical layer signaling, the method
The terminal further comprises transmitting uplink OFDMA data information to the access point on the subchannel corresponding to the terminal in OFDMA mode.

With respect to the fifteenth possible implementation of the second aspect, in the sixteenth possible implementation of the second aspect, the uplink OFDMA data information carries an OFDMA ACK or OFDMA BA request and an OFDMA ACK or OFDMA. The BA request is further used to instruct the access point to send an ACK or BA response to the terminal in OFDMA mode, in which case the terminal performs uplink OFDMA data information on the subchannel corresponding to the terminal. After the step of sending to the access point, the method
The terminal further comprises the step of responding to the uplink OFDMA data information on the subchannel corresponding to the terminal and receiving the ACK or BA response transmitted by the access point.

With respect to any one of the second to fifth possible implementations of the second aspect, in the seventeenth possible implementation of the second aspect, OFDMA physical layer signaling corresponds to the terminal. The uplink OFDMA data information is transmitted to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the terminal corresponds to the terminal according to OFDMA physical layer signaling. After the step of determining the channel, the method
The terminal further comprises transmitting uplink OFDMA data information to the access point on the subchannel corresponding to the terminal in OFDMA mode.

According to a third aspect, the present invention is an access point.
Orthogonal Frequency Divided Multiple Connections A transmission module configured to transmit OFDMA physical layer signaling to a terminal, which is used to indicate to the terminal the subchannels allocated to the terminal. The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling, and OFDMA physical layer signaling provides an access point with a transmission module containing the terminal identifier and the subchannel information corresponding to the terminal identifier. To do.

With respect to the third aspect, in the first possible implementation of the third aspect, the terminal identifier is an identifier for one or more terminal groups, each terminal group including at least one terminal and sub. The channel information includes an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel, in which case OFDMA used to indicate to the terminal the subchannel assigned to the terminal. Physical layer signaling
Each terminal group contains an OFDMA physical layer signaling used to indicate that the allocated subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. And subchannels have a one-to-one correspondence.

With respect to the first possible implementation of the third aspect, in the second possible implementation of the third aspect, the transmit module with the terminal group identifier before the OFDMA physical layer signaling is transmitted to the terminal. It is further configured to send a mapping relationship with the address of the terminal to the terminal, thereby learning the terminal group in which the terminal is located.

With respect to the third aspect, in the third possible implementation of the third aspect, the terminal identifier is an identifier for one terminal group, the terminal group comprising at least two terminals, in which case the terminals. The OFDMA physical layer signaling used to indicate to the terminal the subchannels assigned to
Each terminal in the terminal group contains OFDMA physical layer signaling used to indicate that the allocated subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. , Each terminal and subchannel in the terminal group has a one-to-one correspondence.

With respect to any one of the third to third possible implementations of the third aspect, in the fourth possible implementation of the third aspect, the transmit module is an orthogonal frequency division multiplexing OFDM preamble. The OFDM preamble is specifically configured to carry OFDMA physical layer signaling, or a null data packet announcement NDPA frame is sent to the terminal, and the NDPA frame carries OFDMA physical layer signaling. Especially configured.

With respect to any one of the third to third possible implementations of the third aspect, in the fifth possible implementation of the third aspect, the transmit module terminals the NDPA frame and OFDM preamble. The NDPA frame carries the terminal identifier in OFDMA physical layer signaling, and the OFDM preamble corresponds to the terminal identifier and carries the subchannel information within the OFDMA physical layer signaling, or the NDPA frame. Is further configured to correspond to a terminal identifier and carry subchannel information within OFDMA physical layer signaling, and an OFDM preamble to carry a terminal identifier in OFDMA physical layer signaling.

With respect to any one of the third to the fifth possible implementations of the third aspect, in the sixth possible implementation of the third aspect, OFDMA physical layer signaling is downlink OFDMA data information. Is specifically used to indicate to the terminal the subchannels assigned to the terminal to receive the, in which case the transmit module is in OFDMA mode after the orthogonal frequency split multiple connection OFDMA physical layer signaling has been transmitted to the terminal. The downlink OFDMA data information is transmitted on the subchannel corresponding to the terminal, the downlink OFDMA data information includes the OFDMA preamble and the OFDMA data, and the OFDMA preamble includes the switching field and the ultra-high throughput signaling B UHT-SIG-B. Further configured to include.

With respect to the sixth possible implementation of the third aspect, in the seventh possible implementation of the third aspect, the OFDMA physical layer signaling or downlink OFDMA data information is an OFDMA acknowledgment ACK request or an OFDMA block acknowledgment. Carrying a BA request, an OFDMA ACK or OFDMA BA request is used in OFDMA mode to instruct the terminal to send an ACK or BA response to the access point, in which case OFDMA physical layer signaling is performed on the terminal. Correspondingly, an ACK or BA response is sent to the access point and is further used to indicate the subchannel allocated to the terminal, in which case the access point is
To receive the ACK or BA response transmitted by the terminal on the subchannel corresponding to the terminal in OFDMA mode after the transmit module transmits downlink OFDMA data information on the subchannel corresponding to the terminal in OFDMA mode. It further includes a configured receiving module.

With respect to the sixth possible implementation of the third aspect, in the eighth possible implementation of the third aspect, OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is transmitted to the access point. And used to indicate the subchannel allocated to the terminal, in which case the transmit module receives an ACK request frame or after the downlink OFDMA data information has been transmitted on the subchannel corresponding to the terminal. To transmit a BA request frame to the terminal, the ACK request frame or BA request frame contains a dedicated information bit, which instruct the terminal to transmit an ACK or BA response to the access point in OFDMA mode. Further configured to be used,
The receiving module is further configured to receive an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

With respect to any one of the third to third possible implementations of the third aspect, in the ninth possible implementation of the third aspect, the OFDMA physical layer signaling is an OFDMA ACK request or OFDMA. Carrying a BA request, an OFDMA ACK or OFDMA BA request is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode, in which case OFDMA physical layer signaling is performed on the terminal. A ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the transmit module is multi-user, multi-input, multi-input. The MU-MIMO data information is specifically configured to transmit MU-MIMO data information to the terminal in the output MU-MIMO mode, and the MU-MIMO data information carries OFDMA physical layer signaling.
The receiving module is further configured to receive an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode after the transmitting module has transmitted the orthogonal frequency split multiple access OFDMA physical layer signaling to the terminal. Ru.

With respect to any one of the third to third possible implementations of the third aspect, in the tenth possible implementation of the third aspect, OFDMA physical layer signaling corresponds to the terminal. An ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels assigned to the terminal, in which case the transmit module is in MU-MIMO mode with MU-MIMO data. Information is transmitted to the terminal, where the MU-MIMO data information carries OFDMA physical layer signaling and transmits an ACK request frame or BA request frame to the terminal, where the ACK request frame or BA request frame contains a dedicated information bit. The dedicated information bit is specifically configured to be used in OFDMA mode to instruct the terminal to send an ACK or BA response to the access point.
In that case, the receiving module receives the ACK or BA response transmitted by the terminal on the subchannel corresponding to the terminal in OFDMA mode after the transmitting module has transmitted the orthogonal frequency split multiple connection OFDMA physical layer signaling to the terminal. Further configured to.

With respect to any one of the third to third possible implementations of the third aspect, in the eleventh possible implementation of the third aspect, OFDMA physical layer signaling corresponds to the terminal. An ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels assigned to the terminal, in which case the transmit module is in MU-MIMO mode with MU-MIMO data. The information is transmitted to the terminal and the ACK request frame or BA request frame is transmitted to the terminal, the ACK request frame or BA request frame includes a dedicated information bit, and the dedicated information bit accesses the ACK response or BA response in OFDMA mode. Used to instruct the terminal to send to a point, an ACK or BA request frame is specifically configured to carry OFDMA physical layer signaling.
In that case, the receiving module so that the transmitting module receives the ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode after transmitting the orthogonal frequency split multiple access OFDMA physical layer signaling to the terminal. Is further configured in.

With respect to any one of the third to third possible implementations of the third aspect, in the twelfth possible implementation of the third aspect, the OFDMA physical layer signaling is an OFDMA ACK request or OFDMA. Carrying a BA request, an OFDMA ACK or OFDMA BA request is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode, in which case OFDMA physical layer signaling is performed on the terminal. Correspondingly, an ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, where the transmit module is an orthogonal frequency split multiple connection OFDMA physical layer signaling. Is further configured to transmit OFDMA + MU-MIMO data information to the terminal on the subchannel corresponding to the terminal in OFDMA + MU-MIMO mode after is transmitted to the terminal.
The receiving module is further configured to receive an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

With respect to any one of the third to third possible implementations of the third aspect, in the thirteenth possible implementation of the third aspect, OFDMA physical layer signaling corresponds to the terminal. An ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the transmit module is an orthogonal frequency split multiple connection OFDMA physical layer signaling. Is transmitted to the terminal, then in OFDMA + MU-MIMO mode, OFDMA + MU-MIMO data information is transmitted to the terminal on the subchannel corresponding to the terminal, and an ACK request frame or BA request frame is transmitted to the terminal, and the ACK request frame or The BA request frame contains a dedicated information bit, which is further configured to be used in OFDMA mode to instruct the terminal to send an ACK or BA response to the access point.
In that case, the receiving module is further configured to receive an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

With respect to any one of the third to fifth possible implementations of the third aspect, in the fourteenth possible implementation of the third aspect, OFDMA physical layer signaling corresponds to the terminal. The uplink OFDMA data information is transmitted to the access point and is specifically used to indicate to the terminal the subchannels assigned to the terminal.
In that case, the receiving module receives the uplink transmission frame transmitted by the terminal before the transmitting module transmits the orthogonal frequency splitting multiplex OFDMA physical layer signaling to the terminal, and the transmitting module receives the orthogonal frequency splitting multiplex OFDMA. After transmitting the physical layer signaling to the terminal, it is further configured to receive the uplink OFDMA data information transmitted by the terminal on the corresponding subchannel in OFDMA mode.

With respect to the fourteenth possible implementation of the third aspect, in the fifteenth possible implementation of the third aspect, the uplink OFDMA data information carries an OFDMA ACK request or an OFDMA BA request and an OFDMA ACK request or OFDMA. The BA request is further used to instruct the access point to send an ACK or BA response to the terminal in OFDMA mode, in which case the transmitting module is transmitted by the terminal on the subchannel to which the receiving module corresponds. After receiving the uplink OFDMA data information, it is further configured to transmit an ACK response or a BA response corresponding to the uplink OFDMA data information on the subchannel corresponding to the terminal in OFDMA mode.

With respect to any one of the third to fifth possible implementations of the third aspect, in the sixteenth possible implementation of the third aspect, OFDMA physical layer signaling corresponds to the terminal. The uplink OFDMA data information is transmitted to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the receiving module is such that the transmitting module is orthogonal frequency split multiplex connection OFDMA. After transmitting the physical layer signaling to the terminal, it is further configured to receive the uplink OFDMA data information transmitted by the terminal on the corresponding subchannel in OFDMA mode.

According to the fourth aspect, the present invention is a terminal.
A receiving module configured to receive orthogonal frequency split multiple connection OFDMA physical layer signaling transmitted by an access point, in OFDMA physical layer signaling to the terminal a subchannel allocated by the access point to the terminal. Used to indicate, OFDMA physical layer signaling includes a terminal identifier, and a receiving module containing subchannel information corresponding to the terminal identifier.
Provided is a terminal comprising a determination module configured to determine a subchannel corresponding to the terminal according to OFDMA physical layer signaling.

With respect to the fourth aspect, in the first possible implementation of the fourth aspect, the terminal identifier is an identifier for one or more terminal groups, each terminal group comprising at least one terminal and sub. The channel information includes an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel, in which case OFDMA used to indicate to the terminal the subchannel assigned to the terminal. Physical layer signaling
Each terminal group contains an OFDMA physical layer signaling used to indicate that the allocated subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. And subchannels have a one-to-one correspondence.

With respect to the first possible implementation of the fourth aspect, in the second possible implementation of the fourth aspect, the receiving module receives the orthogonal frequency split multiple connection OFDMA physical layer signaling transmitted by the access point. It is further configured to receive the mapping relationship between the terminal group identifier and the terminal address, and the mapping relationship is transmitted by the access point, in which case the determination module follows the mapping relationship. It is specifically configured to determine that the terminal is located within the terminal group, and in that case, determine that the subchannel corresponding to the terminal group is the subchannel corresponding to the terminal.

With respect to the fourth aspect, in the third possible implementation of the fourth aspect, the terminal identifier is an identifier for one terminal group, the terminal group comprising at least two terminals, in which case the terminals. The OFDMA physical layer signaling used to indicate to the terminal the subchannels assigned to
Each terminal in the terminal group contains OFDMA physical layer signaling used to indicate that the allocated subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. , Each terminal and subchannel in the terminal group has a one-to-one correspondence.

With respect to any one of the fourth to fourth possible implementations of the fourth aspect, in the fourth possible implementation of the fourth aspect, the receiving module is orthogonal transmitted by the access point. Receive frequency-partitioned multiplexing OFDM preambles, which are specifically configured to carry OFDMA physical layer signaling, or receive null data packet announcement NDPA frames sent by access points, and NDPA frames , Is specifically configured to carry OFDMA physical layer signaling.

With respect to any one of the fourth to the third possible implementations of the fourth aspect, in the fifth possible implementation of the fourth aspect, the receiving module is an NDPA transmitted by the access point. Receiving frames and OFDM preambles, NDPA frames carry terminal identifiers in OFDMA physical layer signaling, and OFDM preambles correspond to terminal identifiers and carry subchannel information within OFDMA physical layer signaling, and so on. Receives NDPA frames and OFDM preambles further configured in or transmitted by the access point, the NDPA frames carry subchannel information within OFDMA physical layer signaling as well as corresponding to the terminal identifier, and OFDM. The preamble is further configured to carry the identifier of the terminal in OFDMA physical layer signaling.

With respect to any one of the fourth to fourth possible implementations of the fourth aspect, in the sixth possible implementation of the fourth aspect, OFDMA physical layer signaling is downlink OFDMA data information. It was specifically used to indicate to the terminal the subchannels allocated to the terminal by the access point to receive the, in which case the receiving module determined the subchannel corresponding to the terminal according to OFDMA physical layer signaling. Later, on the subchannel corresponding to the terminal, the downlink OFDMA data information transmitted by the access point is received, the downlink OFDMA data information includes OFDMA preamble and OFDMA data, and the OFDMA preamble is a switching field and ultra high. It is further configured to include a throughput signaling B UHT-SIG-B.

With respect to the sixth possible implementation of the fourth aspect, in the seventh possible implementation of the fourth aspect, the receiving module
A receiving unit that supports OFDMA data and is configured to receive the destination terminal address transmitted by the access point.
Determines if the terminal matches the destination terminal address, and if so, instructs the receiving unit to receive the downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal. It includes a determination unit configured to do so.

With respect to the seventh possible implementation of the fourth aspect, in the eighth possible implementation of the fourth aspect, the OFDMA physical layer signaling or downlink OFDMA data information is an OFDMA acknowledgment ACK request or an OFDMA block acknowledgment. Carrying a BA request, an OFDMA ACK or OFDMA BA request is used in OFDMA mode to instruct the terminal to send an ACK or BA response to the access point, in which case OFDMA physical layer signaling is performed on the terminal. Correspondingly, an ACK or BA response is sent to the access point and is further used to indicate the subchannel allocated to the terminal, in which case the terminal
After the receiving module receives the downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal, it sends an ACK response or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode. It further comprises a transmission module configured to do so.

With respect to the seventh possible implementation of the fourth aspect, in the ninth possible implementation of the fourth aspect, OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is transmitted to the access point. In addition, it is further used to indicate the subchannel allocated to the terminal, in which case the receiving module receives the downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal. After that, the ACK request frame or BA request frame transmitted by the access point is received, the ACK request frame or BA request frame contains a dedicated information bit, and the dedicated information bit accesses the ACK response or BA response in OFDMA mode. Further configured to be used to instruct the terminal to send to
In that case, the transmit module is further configured to transmit an ACK or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

With respect to any one of the fourth to the third possible implementations of the fourth aspect, in the tenth possible implementation of the fourth aspect, the OFDMA physical layer signaling is an OFDMA ACK request or OFDMA. Carrying a BA request, an OFDMA ACK or OFDMA BA request is used in OFDMA mode to instruct the terminal to send an ACK or BA response to the access point, in which case OFDMA physical layer signaling is performed on the terminal. Correspondingly, an ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the receiving module is sent by the access point. It is specifically configured to receive multi-user, multi-input, multi-output MU-MIMO data information.
The transmit module is further configured to transmit an ACK or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode after the determination module determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling. Ru.

With respect to any one of the fourth to fourth possible implementations of the fourth aspect, in the eleventh possible implementation of the fourth aspect, OFDMA physical layer signaling corresponds to the terminal. An ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels assigned to the terminal, in which case the receiving module is the MU-MIMO sent by the access point. Receives data information, where the MU-MIMO data information carries OFDMA physical layer signaling and receives an ACK or BA request frame transmitted by the access point, where the ACK or BA request frame is a dedicated information bit. The dedicated information bit is specifically configured to be used in OFDMA mode to instruct the terminal to send an ACK or BA response to the access point.
In that case, the transmission module causes the determination module to determine the subchannel corresponding to the terminal according to OFDMA physical layer signaling and then transmit an ACK response or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode. Is further configured in.

With respect to any one of the fourth to the third possible implementations of the fourth aspect, in the twelfth possible implementation of the fourth aspect, OFDMA physical layer signaling corresponds to the terminal. An ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels assigned to the terminal, in which case the receiving module is the MU-MIMO sent by the access point. Upon receiving the data information, the ACK request frame or BA request frame transmitted by the access point is received, the ACK request frame or BA request frame contains a dedicated information bit, and the dedicated information bit is an ACK response or BA in OFDMA mode. Used to instruct the terminal to send a response to the access point, an ACK or BA request frame is specifically configured to carry OFDMA physical layer signaling.
In that case, the transmission module causes the determination module to determine the subchannel corresponding to the terminal according to OFDMA physical layer signaling and then transmit an ACK response or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode. Is further configured in.

With respect to any one of the fourth to the third possible implementations of the fourth aspect, in the thirteenth possible implementation of the fourth aspect, the OFDMA physical layer signaling is an OFDMA ACK request or OFDMA. Carrying a BA request, an OFDMA ACK or OFDMA BA request is used in OFDMA mode to instruct the terminal to send an ACK or BA response to the access point, in which case OFDMA physical layer signaling is performed on the terminal. Correspondingly, an ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the receiving module is determined by the OFDMA physical. It is further configured to receive OFDMA + MU-MIMO data information transmitted by the access point on the subchannel corresponding to the terminal after determining the subchannel corresponding to the terminal according to layer signaling.
The transmit module is further configured to transmit an ACK or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

With respect to any one of the fourth to fourth possible implementations of the fourth aspect, in the fourteenth possible implementation of the fourth aspect, OFDMA physical layer signaling corresponds to the terminal. An ACK or BA response is sent to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the receiving module is terminald by the decision module according to OFDMA physical layer signaling. After determining the subchannel corresponding to, the OFDMA + MU-MIMO data information transmitted by the access point is received and the ACK request frame or BA request frame transmitted by the access point is received on the subchannel corresponding to the terminal. In addition, the ACK or BA request frame contains a dedicated information bit, which is used in OFDMA mode to instruct the terminal to send an ACK or BA response to the access point. Configured
The transmit module is further configured to transmit an ACK or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

With respect to any one of the fourth to the fifth possible implementations of the fourth aspect, in the fifteenth possible implementation of the fourth aspect, OFDMA physical layer signaling corresponds to the terminal. The uplink OFDMA data information is transmitted to the access point and is specifically used to indicate to the terminal the subchannels assigned to the terminal, in which case the transmitting module is transmitted by the receiving module by the access point. Orthogonal Frequency Split Multiple Connections After further configured to send uplink transmission frames to the access point before receiving OFDMA physical layer signaling, after the decision module determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling. It is further configured to transmit uplink OFDMA data information to the access point on the subchannel corresponding to the terminal in OFDMA mode.

With respect to the fifteenth possible implementation of the fourth aspect, in the sixteenth possible implementation of the fourth aspect, the uplink OFDMA data information carries an OFDMA ACK or OFDMA BA request and an OFDMA ACK or OFDMA. The BA request is further used to instruct the access point to send an ACK or BA response to the terminal in OFDMA mode, in which case the receiving module causes the transmitting module to send uplink OFDMA data information to the access point. After transmission, it is further configured to correspond to uplink OFDMA data information and receive an ACK or BA response transmitted by the access point on the subchannel corresponding to the terminal.

With respect to any one of the fourth to fourth possible implementations of the fourth aspect, in the seventeenth possible implementation of the fourth aspect, OFDMA physical layer signaling corresponds to the terminal. The uplink OFDMA data information is transmitted to the access point and is specifically used to indicate to the terminal the subchannels allocated to the terminal, in which case the transmit module is such that the decision module is terminal according to OFDMA physical layer signaling. After determining the subchannel corresponding to, it is further configured to transmit uplink OFDMA data information to the access point on the subchannel corresponding to the terminal in OFDMA mode.

The present invention provides a data transmission induction method, an access point, and a terminal, where the access point transmits OFDMA physical layer signaling to the terminal, whereby each terminal provides a subchannel to which the terminal corresponds. It learns and therefore the terminal may perform the corresponding action on the subchannel corresponding to the terminal. That is, the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling allows the access point to indicate the subchannel to more terminals, that is, the access point indicates the subchannel. There is no limit to the number of terminals.

In order to more clearly explain the technical solution in the embodiment of the present invention, the accompanying drawings necessary for the description of the embodiment or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below show some embodiments of the present invention, and one of ordinary skill in the art can derive other drawings from these attached drawings without any creative effort. ..

It is a schematic flowchart of Embodiment 2 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 4 of the data transmission induction method by this invention. FIG. 1 is a schematic view of data transmission according to the present invention. FIG. 2 is a schematic view of data transmission according to the present invention. FIG. 3 is a schematic view of data transmission according to the present invention. FIG. 4 is a schematic view of data transmission according to the present invention. It is a schematic flowchart of Embodiment 5 of the data transmission induction method by this invention. FIG. 5 is a schematic view of data transmission according to the present invention. FIG. 6 is a schematic view of data transmission according to the present invention. It is a schematic flowchart of Embodiment 6 of the data transmission induction method by this invention. FIG. 7 is a schematic view of data transmission according to the present invention. FIG. 8 is a schematic view of data transmission according to the present invention. It is a schematic flowchart of Embodiment 7 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 8 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 9 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 10 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 11 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 12 of the data transmission induction method by this invention. FIG. 9 is a schematic view of data transmission according to the present invention. FIG. 10 is a schematic view of data transmission according to the present invention. It is a schematic flowchart of Embodiment 13 of the data transmission induction method by this invention. FIG. 11 is a schematic view of data transmission according to the present invention. FIG. 12 is a schematic view of data transmission according to the present invention. It is a schematic flowchart of Embodiment 14 of the data transmission induction method according to this invention. It is a schematic flowchart of Embodiment 15 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 17 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 18 of the data transmission induction method according to this invention. It is a schematic flowchart of Embodiment 19 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 20 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 21 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 22 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 23 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 24 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 25 of the data transmission induction method by this invention. It is a schematic flowchart of Embodiment 26 of the data transmission induction method by this invention. It is a schematic structural drawing of Embodiment 2 of the access point by this invention. It is a schematic structural drawing of Embodiment 1 of the terminal by this invention. It is a schematic structural drawing of Embodiment 2 of the terminal by this invention. It is a schematic structural drawing of Embodiment 3 of the terminal by this invention. FIG. 5 is a block diagram of an IDFT implementation in which an access point transmits downlink data information to a terminal in OFDMA mode. It is a schematic structural drawing of Embodiment 4 of the access point by this invention. FIG. 5 is a block diagram in which an access point carries out transmission of uplink OFDMA data information by using OFDMA physical layer signaling. It is a schematic structural drawing of Embodiment 4 of the terminal by this invention. It is a schematic structural drawing of Embodiment 5 of the terminal by this invention.

In order to make the purpose, technical solution, and advantage of the embodiment of the present invention easier to understand, the technical solution in the embodiment of the present invention will be clarified below with reference to the accompanying drawings of the embodiment of the present invention. Explain to. Obviously, the embodiments described are part, but not all, of the embodiments of the present invention. All other embodiments that one of ordinary skill in the art would obtain based on an embodiment of the invention without spending creative effort shall fall within the protection of the invention.

The terminal involved in this application, that is, the user device may be a wireless terminal or a wired terminal. The wireless terminal may refer to a device that provides voice and / or data connectivity to the user, a handheld device that has wireless connectivity, or another processing device that is connected to a wireless modem. The radio terminal may communicate with one or more core networks by using a radio access network (RAN, Radio Access Network, etc.). The wireless terminal may be a mobile terminal such as a mobile phone (also referred to as a "cellular" phone), or a computer equipped with the mobile terminal, eg, a portable pocket that exchanges language and / or data with a wireless access network. It may be a size, handheld, computer built-in, or in-vehicle mobile device. For example, it may be a personal communication service (PCS, Personal Communication Service) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL, Wireless Loop) station, or a personal digital assistant (PDA). It may be a device such as. Wireless terminals include systems, subscriber units (Subscriber Units), subscriber stations (Subscriber Stations), mobile stations (Mobile Stations), mobile terminals (Mobiles), remote stations (Remote Stations), access points (Access Points), remotes. It may also be referred to as a terminal (Remote Terminal), an access terminal (Access Thermal), a user terminal (User Terminal), a user agent (User Agent), a user device (User Device), or a user device (User Equipment).

The access point (such as a base station) involved in this application can be a WLAN access point (Access Point) or communicates with a wireless terminal on an air interface within an access network by using one or more sectors. It may refer to a device to be used. The base station translates the received wireless frames and IP packets into each other and acts as a router between the wireless terminal and the rest of the access network, where the rest of the access network is the Internet Protocol ( IP) network may be included. The base station may coordinate the attribute management of the air interface as well. For example, a base station is a base station (BTS, Base Transceiver Station) in GSM or CDMA, a base station (NodeB) in WCDMA, and an advanced NodeB (NodeB, eNB, or e-) in LTE. Node B, evolved Node B), which is not limited in this application.

Embodiment 1 of the present invention provides a data transmission indication method. A method according to an embodiment is a particular process in which the access point points to a corresponding subchannel by using OFDMA physical layer signaling. The method is for the access point to send OFDMA physical layer signaling to the terminal, where OFDMA physical layer signaling is used to indicate to the terminal the subchannels assigned to the terminal. , The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling, wherein the OFDMA physical layer signaling includes transmitting, including the terminal identifier and the subchannel information corresponding to the terminal identifier.

Note that in this embodiment of the invention there may be one or more terminals. The access point performs the same operation on each terminal and is therefore described by using the terminal in this embodiment of the invention.

In particular, the access point may transmit OFDMA physical layer signaling to the terminal in OFDM mode, i.e., the access point may transmit OFDMA physical layer signaling to terminals within the access point's coverage, but the access point's coverage. Another terminal within can likewise acquire OFDMA physical layer signaling and listen for proper demodulation. The OFDMA physical layer signaling in this embodiment of the present invention includes a terminal identifier and subchannel information corresponding to the terminal identifier and is used to indicate to the terminal the subchannel assigned to the terminal. , Each terminal learns the subchannel corresponding to the terminal and executes the corresponding operation on the subchannel, for example, on the subchannel corresponding to the terminal, belongs to the terminal and transmits data transmitted by the access point. It can be received or can send the corresponding response or uplink data information to the access point on the subchannel corresponding to the terminal. The terminal identifier in the above-mentioned OFDMA physical layer signaling may be a single terminal group identifier or an identifier of a plurality of terminal groups, and the terminal group may include a plurality of terminals.

The channel bandwidth of the subchannel is not limited in the present invention, and the access point determines the bandwidth of the subchannel according to the bandwidth requirement of the terminal. In addition, the subchannels shown may be presented in multiple forms, which can be the center frequency and bandwidth of the subchannel, or the number and bandwidth of the starting frequency band. , Or the range of the number of channels from the start frequency band to the end frequency band, which is not limited in the present invention.

The subchannels indicated to the terminals by OFDMA physical layer signaling according to this embodiment may correspond to one terminal or may correspond to a plurality of terminals. For example, multiple terminals may be grouped into one group, and OFDMA physical layer signaling allocates subchannels to this group, in which case all terminals in the group have subchannels. Can be used.

The format of the signaling portion in the prior art can only support a bandwidth of 20 MHz, when the user is allocated for each subcarrier in 48 subcarriers and bandwidth greater than 20 MHz can be used. , The prior art does not have a corresponding extended solution to support that bandwidth. However, OFDMA physical layer signaling in this embodiment of the invention can support greater bandwidth and, for a large number of terminals, the subchannels to be allocated can be allocated and shown to the plurality of terminals. , Where the subchannel comprises one or more subcarriers. Therefore, the subject matter of this embodiment of the present invention and the prior art is different (in the prior art, the subject matter is to allocate a user to a subcarrier, and in this embodiment of the present invention, the subject matter is a subchannel to the user. (Or to allocate subcarriers), the prior art can only invent to 48 terminals due to subcarrier restrictions, and indicating subchannels to terminals by OFDMA physical layer signaling depends on bandwidth. Unrestricted, subchannels can be allocated to more terminals (more than 48 users) in a larger bandwidth. Indeed, this embodiment of the invention can still allocate subchannels to less than 48 terminals.

In the data transmission indication method provided in this embodiment of the invention, the access point transmits OFDMA physical layer signaling to the terminal, whereby each terminal learns the subchannel to which the terminal corresponds, and thus the terminal. Can perform the corresponding operation on the subchannel corresponding to the terminal. That is, the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling allows the access point to indicate the subchannel to more terminals, that is, the access point indicates the subchannel. There is no limit to the number of terminals.

FIG. 1 is a schematic flowchart of a second embodiment of the data transmission indication method according to the present invention. This method according to this embodiment is a feasible implementation in which the subchannel is presented to the terminal by using OFDMA physical layer signaling. Further, based on Embodiment 1, the terminal identifier may be the identifier of one or more terminal groups, each terminal group includes at least one terminal, and the subchannel information is an uplink subchannel or down. Includes link subchannels or uplink and downlink bidirectional subchannels. The method includes:

S101: The access point transmits a mapping relationship between the terminal group identifier and the terminal address to the terminal, whereby the terminal learns the terminal group in which the terminal is arranged.

In particular, the terminal needs to know the terminal group to which the terminal belongs, and in that case, the subchannel corresponding to the terminal can be known only when the access point allocates the subchannel to the terminal group. Therefore, the access point needs to transmit the mapping relationship between the terminal group identifier and the terminal address to each terminal, so that each terminal learns the terminal group in which the terminal is arranged. For a simple method in which terminals are notified of the mapping relationship between the terminal group identifier and the address of each terminal in the form of a grouping management frame, a reference to Table 1 may be made, which is particularly as follows. ..

By using the terminal grouping management frame shown in Table 1, the terminal can learn the identifier of the terminal group in which the terminal is arranged.

S102: The access point transmits OFDMA physical layer signaling to the terminal, whereby the terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling, wherein the OFDMA physical layer signaling is the terminal identifier. And the subchannel information corresponding to the terminal identifier, OFDMA physical layer signaling is such that the subchannel assigned to each terminal group is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. Used to indicate that there is.

As appropriate, OFDMA physical layer signaling means that the subchannel assigned to the terminal is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel by using a dedicated indication bit. Can be shown. That is, the above-mentioned OFDMA physical layer signaling can not only indicate the allocated subchannel for the terminal group, but also the subchannel allocated to the terminal group is an uplink subchannel or a downlink subchannel or an uplink. And can also be shown to be a downlink bidirectional subchannel.

In particular, the terminal identifier is an identifier for one or more terminal groups, and OFDMA physical layer signaling is used to indicate to one or more terminal groups the subchannels assigned to each terminal group. , Here, the terminal group and the subchannel have a one-to-one correspondence.

The relevant fields included in the above-mentioned OFDMA physical layer signaling indication may be in the format shown in Table 2 below. The group numbers in Table 2 are used to indicate the current grouping identifiers of a plurality of terminals, and the terminals may be stations (Station, hereinafter abbreviated as STA). The fields shown in Table 2 may indicate that subchannels are assigned to each terminal group, where each terminal group may include at least one terminal. For example, terminal group 1 includes STA1 and STA2, terminal group 2 includes STA3 to STA5, and group n includes STA k to STA n. According to this injection method, both STA1 and STA2 operate on subchannel 1, STA3 to STA5 operate on subchannel 2, and all STA k to STA n operate on subchannel n. .. By using this indication, the terminal can learn the subchannel corresponding to the terminal, and the access point also flexibly schedules the terminals in the terminal group on each allocated subchannel. be able to. In addition, terminal groups can also have common elements, for example, terminal group 1 may include STA1 to STA3, and terminal group 2 may include STA2 to STA5. Here, both STA2 and STA3 are in terminal group 1 and terminal group 2. In this way, the access point flexibly allocates all subchannels to the STA within the effective range of the indication, thereby further improving the flexibility of terminal scheduling by the access point.

In other cases, in the subchannel, the spacing between subcarriers in OFDMA mode differs from the spacing between subcarriers in OFDM mode, and, as a special case, the spacing between subcarriers in OFDM mode is the OFDMA mode. In the case of an integral multiple (K times) of the interval between subcarriers in, effective indication on the operating subchannel of multiple terminals is a method in which the subcarriers in OFDMA mode are simply grouped. Can be carried out. The amount of subcarriers in OFDM mode at each 20 MHz (ie, unit subchannel bandwidth) is 64, in which case the amount of subcarriers in OFDMA mode is 64 * K (* is a product symbol) and therefore. The access point may allocate 64 * K subcarriers in the subchannel to the terminals in the terminal group (see Table 3), i.e., each terminal may have several (one or more) subs. Corresponds to the carrier. That is, Table 3 actually details Table 2 as long as the subchannel is involved, where the subcarrier k _n can be a subcarrier identifier in OFDMA mode (ie, k _N = 64). * K, where k _n can be any integer from 1 to k _N ) or can be a subcarrier identifier in OFDM mode (ie, k _N = 64). It should be noted that prior art cannot support refinement of spacing between subcarriers and therefore cannot perform indications for more users at 20 MHz.

If the sub-carrier k _n is the sub-carrier identifier in OFDMA mode indication unit granularity of the method of this embodiment is specific to each sub-carrier of the OFDMA (i.e., subcarriers may correspond to the terminal) , when the sub-carrier k _n is the sub-carrier identifier in OFDM mode, indication unit granularity of the method of this embodiment is the K subcarriers of OFDMA. Therefore, an embodiment of the method of the invention divides the subchannels by using a narrower spacing between the subcarriers for a unit bandwidth (eg, the unit bandwidth is 20 MHz) so that the divided subchannels Effective invention can be performed on the operation subchannels of a plurality of terminals by a method of simply grouping.

In addition, when K = 4, each of the 64 consecutive OFDMA subcarriers occupies a channel unit (5 MHz), in which case the channel numbers in Embodiments 1 and 2 are similarly indicated. It may continue to be used as a method.

In the data transmission indication method provided in this embodiment of the present invention, the access point carries and includes a terminal identifier and subchannel information corresponding to the terminal identifier to transmit to the terminal the OFDMA physical layer signaling. , The access point further transmits the mapping relationship between the terminal group identifier and the address of each terminal to each terminal, whereby each terminal learns the terminal group in which the terminal is located, and corresponds to the terminal. Further learn the subchannel to do, thereby performing the corresponding action on that subchannel. That is, the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling allows the access point to indicate the subchannel to more terminals, that is, the access point indicates the subchannel. There is no limit to the number of terminals.

Embodiment 3 of the present invention provides a data transmission indication method. This method, according to this embodiment, is another feasible implementation in which the access point indicates a subchannel to the terminal by using OFDMA physical layer signaling. Based on Embodiment 1, OFDMA physical layer signaling may include a terminal identifier and subchannel information corresponding to the terminal identifier, where the terminal identifier is a single terminal group identifier and the terminal group is. , And OFDMA physical layer signaling, the subchannel assigned to each terminal in the terminal group is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. Used to indicate that.

As appropriate, OFDMA physical layer signaling means that the subchannel assigned to the terminal is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel by using a dedicated indication bit. Can be shown. The terminals and subchannels in the terminal group have a one-to-one correspondence. That is, the above-mentioned OFDMA physical layer signaling can not only indicate the allocated subchannel for each terminal in the terminal group, but also the subchannel allocated to each terminal in the terminal group is an uplink subchannel. Alternatively, it may be indicated that it is a downlink subchannel or an uplink and downlink bidirectional subchannel.

In particular, the relevant fields included in the above-mentioned OFDMA physical layer signaling indication may be in the format shown in Table 4 below. The group numbers in Table 4 are used to indicate the grouping identifier of the current terminal group, the subchannels following the group number, and the STAs in the terminal group corresponding to the group number have a separate one-to-one correspondence. Yes, that is, the access point sequentially allocates subchannels to terminals in the terminal group. That is, the STAs in the group corresponding to the group number are STA1 to STAn in order, and in that case, according to the format, STA1 corresponds to subchannel 1, STA2 corresponds to subchannel 2, and so on. Corresponds to subchannel n.

In the above case where the spacing between subcarriers within the subchannels in OFDM mode is different from the spacing in OFDMA mode, the subchannels allocated by each STA in the group are simply channel numbers or similar. Not only can it be shown, but it can also be shown in a manner that uses subcarrier ranges, as shown in Table 4'.

That is, each terminal in the aforementioned terminal group corresponds to a different subchannel, and OFDMA physical layer signaling can support a larger bandwidth (not limited to a 20 MHz bandwidth), so that the subchannel is more Can be shown on many terminals.

In the data transmission indication method provided in this embodiment of the invention, the access point transmits OFDMA physical layer signaling to the terminal, whereby each terminal learns the subchannel to which the terminal corresponds, and thus the terminal. Can perform the corresponding operation on the subchannel corresponding to the terminal. That is, the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling allows the access point to indicate the subchannel to more terminals.

FIG. 2 is a schematic flowchart of a fourth embodiment of the data transmission indication method according to the present invention. The method according to this embodiment is the process by which an OFDM preamble carrying OFDMA physical layer signaling is transmitted to the terminal so that the terminal learns the subchannel corresponding to the terminal according to OFDMA physical layer signaling and the terminal. Receives downlink OFDMA data information transmitted by the access point on the subchannel corresponding to. The method includes:

S201: The access point sends an OFDM preamble to the terminal, where the OFDM preamble carries OFDMA physical layer signaling.

In particular, the access point transmits the OFDM preamble in OFDM mode to any terminal within the coverage area of the access point, where the OFDM preamble is a short training field (STF for short), a long training field. (Long Training Field, hereinafter abbreviated as LTF), legacy signaling (hereinafter abbreviated as L-SIG), and ultra-high throughput signaling A (Ultra High High Frequency Signaling A, hereinafter abbreviated as UHT-SIG-A). UHT-SIG-A carries OFDMA physical layer signaling. Note that the OFDM modes are as follows: The access point sends the OFDM preamble to the terminal, but in this case the access point does not know the specific terminal to which the OFDM preamble is sent, so the access point sends the OFDM preamble to any terminal. , All active terminals listen and receive OFDM preambles, in which case they acquire OFDMA physical layer signaling, thereby learning the channels corresponding to the terminals.

References may be made to the description of embodiments 1 to 3 for a method in which OFDMA physical layer signaling indicates a subchannel in this embodiment of the invention, details of which are not described herein again in this embodiment of the invention. Please note that.

S202: The access point transmits downlink OFDMA data information on the subchannel corresponding to the terminal in OFDMA mode, where the downlink OFDMA data information includes OFDMA preamble and OFDMA data (Data Symbol). Includes a switching field and an ultra-high throughput signaling B (Ultra High Throhput Signaling B, hereinafter abbreviated as UHT-SIG-B).

In particular, the access point transmits downlink OFDMA data information on the subchannel corresponding to the terminal in OFDMA mode, that is, the access point simultaneously transmits a plurality of downlink OFDMA data information on each subchannel corresponding to the terminal. It can be sent to the terminal, thus reducing signaling overhead and resulting in multi-user diversity gains. In addition, the subchannel corresponding to the terminal may further include the primary channel of the basic service set (Basic Service Set, hereinafter abbreviated as BSS), where the primary channel exchanges control and management signaling. Used by access points and terminals for, i.e., after transmitting OFDMA physical layer signaling completely on the primary channel, the access point may release the primary channel or combine the primary channel with another subchannel. Downlink OFDMA data information can be transmitted to the terminal by use.

For the data transmission frame format of OFDM preamble and downlink OFDMA data information, the following Table 5 may be referred to. Furthermore, when transmitted together, both OFDMA physical layer signaling and OFDMA data can use the formats in Table 5, and only OFDM preambles are transmitted when only OFDMA physical layer signaling is transmitted individually. Will be done.

The content transmitted in OFDMA mode is independent of each other for each terminal, that is, the Switching Fields, UHT-SIG-B, and OFDMA data on each subchannel corresponding to the terminal are all independent of each other. Please note that The aforementioned Switching Field refers to the Ultra High-Throughput Short Training Field (UHT-STF for short) and the Ultra High-Throughput Long Training Field (UHT-STF for short) and the Ultra High-Throughput Long Training Field for Long Training. Can include. In OFDMA mode, UHT-STF is used by the terminal to complete automatic gain control (Automatic Gain Control, hereafter abbreviated AGC) or channel synchronization of the subchannels or all channels indicated by OFDMA physical layer signaling. .. The UHT-LTF is used by terminals to complete channel estimation on subchannels or all channels. If the physical layer signaling in UHT-SIG-A only performs channel allocation to the terminal group, UHT-SIG-B performs further indications to the terminals in the terminal group corresponding to the subchannel in the subchannel. Can be used by the transmitting end to

In OFDMA + MU-MIMO mode, the UHT-STF by the terminal to perform AGC or channel synchronization on the subchannels or all channels indicated by OFDMA physical layer signaling and the corresponding spatiotemporal stream (space-time streams). When used, UHT-LTF is used by terminals to perform channel estimation on the subchannels or all channels indicated by OFDMA physical layer signaling and the subchannels of the corresponding spatiotemporal stream. Further, the spatiotemporal stream allocation information of MU-MIMO can be carried by UHT-SIG-A or by UHT-SIG-B.

In addition, the access point may transmit the OFDM preamble over the primary channel in OFDM mode (see example in FIG. 2a) or may transmit the OFDM preamble over multiple subchannels in an iterative manner (FIG. 2b). See the example in). In that case, the access point is switched to OFDMA mode and transmits the OFDMA preamble and OFDMA data to the terminal on the indicated subchannels described above. On the other hand, when the interval between OFDM subcarriers is different from the OFDMA interval (an example in which the unit channel is 20 MHz is used), the OFDM preamble and downlink OFDMA data information should be transmitted by the access point. For reference, reference may be made to the example in FIG. 2c, i.e., this unit channel (which is the primary channel in the figure) is divided into a plurality of subcarriers, one or more of which correspond to terminals. .. For transmitting OFDM preamble and downlink OFDMA data information by an access point when the spacing between OFDM subcarriers is different from the OFDMA spacing and the bandwidth is the sum of the bandwidths of multiple unit channels. May refer to the example in FIG. 2d.

Correspondingly, the terminal detects and receives the OFDM preamble in the idle state and in OFDM mode, and after receiving the OFDM preamble in OFDM mode (the OFDM preamble can be received on the primary channel or more than one. (Can be received on subchannels), the terminal reads the OFDMA physical layer signaling in UHT-SIG-A in an OFDM manner and is switched to the subchannel indicated by OFDMA physical layer signaling to readjust the AGC and respond. The estimation of the channel state information of the subchannel is completed, and the downlink OFDMA data information is demolished on the corresponding subchannel to acquire the OFDMA preamble and OFDMA data belonging to the terminal.

Another method of receiving the terminal is after the terminal detects and receives the OFDM preamble in idle and in OFDM mode and receives the OFDM preamble in OFDM mode (the OFDM preamble can be received on the primary channel? (Or it can be received on multiple subchannels), the terminal reads the OFDMA physical layer signaling in UHT-SIG-A in an OFDM manner and covers the entire bandwidth occupied at this time by the access point transmitting data. Switched and retuned the AGC to complete the estimation of the channel state information of the subchannel or the channel state information of the entire bandwidth indicated by OFDMA physical layer signaling, and downlink OFDMA data information on the corresponding subchannel. Is to obtain the OFDMA preamble and OFDMA data belonging to the terminal.

In the data transmission indication method provided in this embodiment of the invention, the access point transmits an OFDM preamble carrying OFDMA physical layer signaling to the terminal, whereby the terminal obtains OFDMA physical layer signaling from the OFDM preamble. Thereby, according to OFDMA physical layer signaling, the terminal may learn the subchannel in which the downlink OFDMA data information corresponding to the terminal should be received. That is, the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling allows the access point to perform an indication to more terminals when the terminal receives the data of the access point. That is, the number of terminals on which the access point indicates a subchannel is not limited.

FIG. 3 is a schematic flowchart of a fifth embodiment of the data transmission indication method according to the present invention. A method according to this embodiment is the process by which the access point sends a null data packet announcement (NDPA for short) carrying OFDMA physical layer signaling to the terminal, whereby the terminal receives an NDPA frame. Obtaining OFDMA physical layer signaling from, therefore, the terminal learns the subchannel corresponding to the terminal according to OFDMA physical layer signaling, and on the subchannel corresponding to the terminal, downlink OFDMA data information transmitted by the access point. To receive. The method includes:

S301: The access point transmits an NDPA frame to the terminal, where the NDPA frame carries the above-mentioned OFDMA physical layer signaling.

In particular, exclusive NDPA frames are used in this embodiment of the invention to carry OFDMA physical layer signaling and to reduce the overhead introduced when OFDMA physical layer signaling is transmitted. .. The format of the NDPA frame in this embodiment of the present invention is specifically shown in Table 6 below.

The access point may transmit NDPA frames to terminals within the access point's coverage area in OFDM mode, and may transmit NDPA frames on subchannels (primary channels, etc.) (example in FIG. 3a). (See), or may be one that transmits NDPA frames on multiple subchannels (see example in Figure 3b), and note that all other terminals can listen to get NDPA frames. .. In that case, the access point further needs to transmit the OFDM preamble in OFDM mode. The above-mentioned OFDMA physical layer signaling can be carried in NDPA frames, or in both NDPA frames and OFDM preambles, but generally only in NDPA frames to reduce signaling overhead. .. Optionally, when the NDPA frame carries OFDMA physical layer signaling, the OFDM preamble may further indicate a particular terminal identifier within the terminal group.

References may be made to the description of embodiments 1 to 3 for a method in which OFDMA physical layer signaling indicates a subchannel in this embodiment of the invention, details of which are not described herein again in this embodiment of the invention. Please note that.

S302: The access point transmits downlink OFDMA data information on the subchannel corresponding to the terminal in OFDMA mode, where the downlink OFDMA data information includes OFDMA preamble and OFDMA data, and the OFDMA preamble is a switching field. (Switching Field) and UHT-SIG-B are included.

In particular, the access point transmits downlink OFDMA data information in OFDMA mode, i.e., the access point can transmit downlink OFDMA data information to multiple terminals simultaneously on each subchannel corresponding to the terminal. Therefore, the corresponding time frequency resources can be fully utilized.

Correspondingly, the terminal detects and receives the NDPA frame in the OFDM system in the idle state, reads the OFDMA physical layer signaling in the OFDM system, and in that case, the terminal also receives the OFDM preamble in the OFDM system. Then, it is switched to OFDMA mode by using the subchannel indicated by OFDMA physical layer signaling, and on the subchannel, it receives the OFDMA preamble and OFDMA data transmitted by the access point in OFDMA mode.

In the data transmission induction method provided in this embodiment of the invention, the access point transmits an NDPA frame carrying OFDMA physical layer signaling to the terminal, whereby the terminal acquires OFDMA physical layer signaling from the NDPA frame. Thereby, according to OFDMA physical layer signaling, the terminal may learn the subchannel in which the terminal should receive the downlink OFDMA data information corresponding to the terminal, thereby being transmitted by the access point on the corresponding subchannel. Receives downlink OFDMA data information. That is, the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling allows the access point to perform an indication to more terminals when the terminal receives the data of the access point. That is, the number of terminals on which the access point indicates a subchannel is not limited. In addition, the access point can transmit downlink OFDMA data information to multiple terminals at the same time on each subchannel corresponding to the terminal, so that the corresponding time frequency resources can be fully utilized.

FIG. 4 is a schematic flowchart of a sixth embodiment of the data transmission indication method according to the present invention. A method according to this embodiment is the process by which the access point sends an NDPA frame and an OFDM preamble to the terminal that separately carry the content contained in the OFDMA physical layer signaling so that the terminal can from the NDPA frame and the OFDM preamble to the OFDMA. Acquiring physical layer signaling, therefore, the terminal learns the subchannel corresponding to the terminal according to OFDMA physical layer signaling and receives the downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal. To do. The method includes:

S401: The access point transmits an NDPA frame and an OFDM preamble to the terminal.

In particular, the NDPA frame and the OFDM preamble can carry OFDMA physical layer signaling in two ways. These methods are independent as follows.

First method: The access point transmits an NDPA frame and an OFDM preamble to the terminal, where the NDPA frame carries the terminal identifier in the above-mentioned OFDMA physical layer signaling, and the OFDM preamble corresponds to the terminal identifier. At the same time, it carries subchannel information within the above-mentioned OFDMA physical layer signaling. The terminal identifier of the present specification may be an identifier of one or more terminal groups in the second embodiment, and there is a one-to-one correspondence between the subchannel and the terminal group, and further, a single one in the third embodiment. It may be an identifier of the terminal group of, and there is a one-to-one correspondence between the subchannel and the terminals in the group.

Second method: The access point transmits an NDPA frame and an OFDM preamble to the terminal, where the NDPA frame corresponds to the terminal identifier and carries the subchannel information within the OFDMA physical layer signaling described above. The OFDM preamble then carries the terminal identifier in the above-mentioned OFDMA physical layer signaling. The terminal identifier of the present specification may be an identifier of one or more terminal groups in the second embodiment, and there is a one-to-one correspondence between the subchannel and the terminal group, and further, a single one in the third embodiment. It may be an identifier of the terminal group of, and there is a one-to-one correspondence between the subchannel and the terminals in the group.

That is, the NDPA frame and the OFDM preamble can cooperate with each other to indicate OFDMA physical layer signaling. The user group information field in Table 5 may include a terminal identifier, and may further include subchannel information corresponding to the terminal identifier. In addition, the control information field in Table 5 may further indicate the valid time length of the subchannel information of the terminal or terminal group currently shown, whereby the terminal is subject to the length of time. , The terminal or terminal group subchannel information indication can be determined to be valid or expired, and if not, the terminal can continue to receive and transmit data using the current subchannel. it can.

If the NDPA frame carries the terminal identifier and the subchannel information corresponding to the terminal identifier (ie, carries the complete OFDMA physical layer signaling), the OFDM preamble again corresponds to the terminal identifier or terminal identifier. Is it not possible to carry sub-channel information (the OFDM preamble can also carry OFDMA physical layer signaling, which has already been specifically described in the aforementioned embodiments and details are not described again here). Or if the NDPA frame carries only the terminal identifier, the OFDM preamble must correspond to the terminal identifier and carry more subchannel information within the NDPA frame, or the NDPA frame carries only the subchannel information. In that case, the OFDM preamble needs to correspond to the subchannel information and further carry the identifier of the terminal in the NDPA frame.

References may be made to the description of embodiments 1 to 3 for a method in which OFDMA physical layer signaling indicates a subchannel in this embodiment of the invention, details of which are not described herein again in this embodiment of the invention. Please note that.

S402: The access point transmits downlink OFDMA data information on the subchannel corresponding to the terminal in OFDMA mode, where the downlink OFDMA data information includes OFDMA preambles and OFDMA data, where the OFDMA preambles are switching fields. (Switching Field) and UHT-SIG-B are included.

In particular, the access point transmits downlink OFDMA data information in OFDMA mode, i.e., the access point can transmit downlink OFDMA data information to multiple terminals simultaneously on each subchannel corresponding to the terminal. Therefore, the corresponding time frequency resources can be fully utilized.

Correspondingly, the terminal receives the NDPA frame in the OFDM system in the idle state and reads a part of the OFDMA physical layer signaling carried in the NDPA frame in the OFDM system, in which case the terminal similarly receives the NDPA frame. Obtained by receiving an OFDM preamble in, then supplementing the OFDMA physical layer signaling and reading that part of the content within the OFDM preamble, and then combining the NDPA frame with the OFDM preamble. According to the subchannel indicated by the OFDMA physical layer signaling, the OFDMA mode is switched to read / demodify the OFDMA preamble and the OFDMA data of the terminal on the subchannel corresponding to the terminal.

In the data transmission induction method provided in this embodiment of the present invention, the access point transmits NDPA frames and OFDM preambles carrying OFDMA physical layer signaling to the terminals, whereby each terminal delivers NDPA frames and OFDM preambles. By use, the terminal may learn the subchannel in which the terminal should receive the downlink OFDMA data information corresponding to the terminal, thereby receiving the downlink OFDMA data information transmitted by the access point. That is, the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling allows the access point to perform an indication to more terminals when the terminal receives the data of the access point. That is, the number of terminals on which the access point indicates a subchannel is not limited. In addition, the access point can transmit downlink OFDMA data information to multiple terminals at the same time on each subchannel corresponding to the terminal, so that the corresponding time frequency resources can be fully utilized.

Further, based on the embodiments shown in FIGS. 2 to 4, as a feasible implementation method of the embodiment of the present invention, the method related to this embodiment is performed after transmitting downlink OFDMA data information to a terminal. The process by which the access point receives the ACK or BA response sent by the terminal on the corresponding subchannel. As appropriate, the above-mentioned OFDMA physical layer signaling or OFDMA data carries an OFDMA acknowledgment (ACK) request or an OFDMA block acknowledgment (Block ACK, hereinafter BA) request, and an OFDMA ACK request or OFDMA BA request. Is used to instruct a terminal to send an ACK or BA response to an access point in OFDMA mode, in which case the above-mentioned OFDMA physical layer signaling corresponds to the terminal and the ACK or BA response is It is sent to the access point and is further used to indicate the subchannel assigned to the terminal. After S202 or S302 or S402, the operation of S10 may be performed.

S10: The access point receives the ACK response or BA response transmitted by the terminal on the subchannel corresponding to the terminal in OFDMA mode.

In particular, each terminal needs to respond to the access point with an ACK or BA response to indicate that the downlink OFDMA data information transmitted by the access point has been correctly received by each terminal. If the access point adds an OFDMA ACK or OFDMA BA request to the OFDMA data or OFDMA physical layer signaling (see FIG. 4a, an example is used in which the access point adds an OFDMA ACK request). After receiving downlink OFDMA data information on the subchannel corresponding to the terminal according to the indication of physical layer signaling, the terminal responds directly with an ACK or BA response in OFDMA mode on the subchannel indicated by OFDMA physical layer signaling. obtain. The ACK response corresponds to the OFDMA ACK request and the BA response corresponds to the OFDMA BA request. In that case, the access point receives an ACK or BA response sent by the terminal on each corresponding subchannel. That is, it is enabled that a plurality of terminals simultaneously send a response to the access point on the subchannel corresponding to the terminal, and the corresponding time frequency resources are fully used.

In the data transmission indication method provided in this embodiment of the invention, the terminal receives downlink OFDMA data information transmitted by the access point on the subchannel indicated by OFDMA physical layer signaling, and a plurality. The terminal can simultaneously send an ACK or BA response to the access point on the corresponding subchannel, i.e., a method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling is such that the terminal ACKs. When sending a response or BA response to an access point, it allows the access point to perform indications to more terminals, i.e., the number of terminals on which the access point exhibits subchannels is not limited and therefore. The ACK or BA response of multiple terminals is transmitted to the access point in parallel, and the corresponding time frequency resources are fully used.

Further, based on the embodiments shown in FIGS. 2 to 4, as another feasible implementation of the embodiments of the present invention, methods relating to this embodiment include OFDMA physical layer signaling and downlink OFDMA data information. Is the process by which the access point sends a single ACK or BA request frame to the terminal after it has been sent to the terminal so that the terminal receives an ACK or BA response on the subchannel indicated by OFDMA physical layer signaling. Can be sent to the access point.

The OFDMA physical layer signaling described above may correspond to a terminal and may be further used to indicate a subchannel allocated to the terminal as well as an ACK or BA response being transmitted to the access point. After S202 or S302 or S402, the next step may be performed.

S20: The access point transmits an ACK request frame or a BA request frame to the terminal, where the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit sends an ACK response or a BA response in OFDMA mode. Used to instruct the terminal to send to the access point.

In particular, after transmitting the downlink OFDMA data information to the terminal, the access point may further transmit a single ACK request frame or BA request frame to the terminal (see FIG. 4b, where the BA request frames are individually. An example of transmission is used), where the ACK or BA request frame contains a dedicated information bit, which causes the terminal to transmit an ACK or BA response to the access point in OFDMA mode. Used to direct to. As appropriate, the ACK or BA request frame may or may not carry OFDMA physical layer signaling. The terminal determines which subchannel the terminal sends an ACK or BA response to the access point according to OFDMA physical layer signaling. If the ACK or BA request frame does not carry OFDMA physical layer signaling, the terminal responds with an ACK or BA response on the subchannel corresponding to each terminal when the access point transmits downlink OFDMA data information. That is, the terminal may use the subchannel in which the terminal receives the downlink OFDMA data information as the subchannel in which the terminal responds by an ACK response or a BA response.

The representation of the dedicated information bit is the frame type used to instruct the terminal to send an ACK or BA request frame in OFDMA mode to send an ACK or BA response to the access point (ie, a conventional ACK request). It may be identified as a frame or a new frame type different from the BA request frame). The representation of another dedicated information bit may also be as follows, and if the frame type of the ACK request frame or BA request frame has not changed, the dedicated information bit will be ACK-responsive or ACK-responsive in OFDMA mode. Used directly to instruct the terminal to send a BA response to the access point.

In addition, as with the OFDM preamble, ACK or BA request frames can only be transmitted on the primary channel or can be transmitted on all subchannels in a duplicated transmission fashion.

S21: The access point receives the ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

In particular, after learning a subchannel in which the terminal sends an ACK or BA response to the access point according to OFDMA physical layer signaling, the terminal sends an ACK or BA response to the access point on the corresponding subchannel in OFDMA mode. To do. That is, all terminals can simultaneously transmit an ACK or BA response to the access point on their corresponding subchannels, i.e., the ACK or BA responses of multiple terminals can be transmitted in parallel. , Corresponding time frequency resources are fully utilized.

Optionally, if the subchannel of the terminal is a plurality of unit channels (such as a channel having a unit of 20 MHz), the terminal may transmit an ACK response or a BA response on these plurality of unit channels by a dual transmission method. Alternatively, an ACK or BA response may be transmitted by a non-double transmission method.

In the data transmission induction method provided in this embodiment of the present invention, the subchannel in which the ACK or BA response is transmitted to the access point is to the terminal by using OFDMA physical layer signaling transmitted by the access point. Shown. That is, in the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling, the access point performs an indication to more terminals when the terminal sends an ACK response or a BA response to the access point. That is, the number of terminals on which the access point indicates a subchannel is not limited, so that the ACK or BA response of multiple terminals is transmitted to the access point in parallel and the corresponding time frequency resource is Fully used.

FIG. 5 is a schematic flowchart of a seventh embodiment of the data transmission indication method according to the present invention. A method according to this embodiment is a process in which an access point transmits OFDMA physical layer signaling to a terminal with multi-user multi-input multi-output (Multi-User Multi-Input Multi-Automat, hereinafter abbreviated as MU-MIMO) data information. Yes, an OFDMA ACK request or an OFDMA BA request is carried by OFDMA physical layer signaling, whereby the terminal responds with an ACK or BA response on the subchannel corresponding to the terminal in OFDMA mode. As shown in FIG. 5, the method includes:

S5011: The access point transmits MU-MIMO data information to the terminal in MU-MIMO mode, where the MU-MIMO data information carries OFDMA physical layer signaling.

In particular, the OFDMA physical layer signaling carried by the aforementioned MU-MIMO data information is used in OFDMA mode to instruct a terminal to send an ACK or BA response to an access point, an OFDMA ACK or OFDMA BA request. That is, the access point requires the terminal to respond with an ACK response or a BA response after acquiring the corresponding MU-MIMO data information. OFDMA physical layer signaling is used to correspond to a terminal, to send an ACK or BA response to the access point and to indicate to the terminal the subchannels assigned to the terminal.

S502: The access point receives an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

In particular, after determining the subchannel in which the ACK or BA response is transmitted to the access point according to OFDMA physical layer signaling, the terminal transmits the ACK or BA response to the access point on the corresponding subchannel in OFDMA mode. .. That is, all terminals can simultaneously transmit an ACK or BA response to the access point on their corresponding subchannels, i.e., the ACK or BA responses of multiple terminals can be transmitted in parallel. In that case, the corresponding time frequency resources can be fully utilized.

In the data transmission indication method provided in this embodiment of the invention, the access point adds OFDMA physical layer signaling to the MU-MIMO data information transmitted to the terminal, wherein the OFDMA physical layer signaling. It is used to send an ACK or BA response to an access point and to indicate to the terminal the subchannels assigned to the terminals so that multiple terminals can simultaneously send an ACK or BA response on the corresponding subchannel. The method by which the access point can transmit to the access point, that is, the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling, is such that the access point sends an ACK or BA response to the access point. It is possible to perform indications to more terminals, i.e., the number of terminals on which the access point points to a subchannel is not limited, and thus multiple terminal ACK or BA responses are sent to the access point in parallel. It is transmitted and the corresponding time frequency resources are fully used.

FIG. 6 is a schematic flowchart of the eighth embodiment of the data transmission indication method according to the present invention. A method according to this embodiment is a process in which the access point sends MU-MIMO data information carrying OFDMA physical layer signaling to the terminal and sends an ACK request frame or a BA request frame to the terminal, whereby the terminal can: In OFDMA mode, respond by ACK response or BA response on the subchannel corresponding to the terminal. As shown in FIG. 6, the method includes:

S601: The access point transmits MU-MIMO data information to the terminal in MU-MIMO mode, where the MU-MIMO data information carries OFDMA physical layer signaling.

In particular, OFDMA physical layer signaling is used to indicate to the terminal the subchannels assigned to the terminal as well as the ACK or BA response being transmitted to the access point.

S602: The access point transmits an ACK request frame or a BA request frame to the terminal, where the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit sends an ACK response or a BA response in OFDMA mode. Used to instruct the terminal to send to the access point.

In particular, the ACK or BA request frame transmitted by the access point to the terminal is the MU-MIMO data information that the terminal corresponds to in order for the access point to learn whether the MU-MIMO data information has been successfully transmitted. The purpose is to require the terminal to respond to the access point by an ACK response or a BA response in OFDMA mode.

S603: The access point receives an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

In particular, after determining the subchannel in which the ACK or BA response is transmitted to the access point according to OFDMA physical layer signaling, the terminal transmits the ACK or BA response to the access point on the corresponding subchannel in OFDMA mode. .. That is, all terminals can simultaneously transmit an ACK or BA response to the access point on their corresponding subchannels, i.e., the ACK or BA responses of multiple terminals can be transmitted in parallel. In that case, the corresponding time frequency resources can be fully utilized.

In the data transmission indication method provided in this embodiment of the invention, the access point adds OFDMA physical layer signaling to the MU-MIMO data information transmitted to the terminal, wherein the OFDMA physical layer signaling. It is used to send an ACK or BA response to an access point and to indicate to the terminal the subchannels assigned to the terminals so that multiple terminals can simultaneously send an ACK or BA response on the corresponding subchannel. The method by which the access point can transmit to the access point, that is, the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling, is such that the access point sends an ACK or BA response to the access point. It is possible to perform indications to more terminals, i.e., the number of terminals on which the access point points to a subchannel is not limited, and thus multiple terminal ACK or BA responses are sent to the access point in parallel. It is transmitted and the corresponding time frequency resources are fully used.

FIG. 7 is a schematic flowchart of a ninth embodiment of the data transmission indication method according to the present invention. A method according to this embodiment is the process by which the access point sends an ACK or BA request frame carrying OFDMA physical layer signaling to the terminal so that the terminal is on the subchannel corresponding to the terminal in OFDMA mode. Respond by ACK response or BA response. As shown in FIG. 7, the method includes:

S701: The access point transmits MU-MIMO data information to the terminal in the MU-MIMO mode.

S702: The access point transmits an ACK request frame or a BA request frame to the terminal, where the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit sends an ACK response or a BA response in OFDMA mode. Used to instruct the terminal to send to the access point, the ACK or BA request frame carries the OFDMA physical layer signaling.

In particular, the ACK or BA request frame transmitted by the access point to the terminal is the MU-MIMO data information that the terminal corresponds to in order for the access point to learn whether the MU-MIMO data information has been successfully transmitted. The purpose is to require the terminal to respond to the access point by an ACK response or a BA response in OFDMA mode. OFDMA physical layer signaling carried in an ACK or BA request frame is used to send an ACK or BA response to the access point and to indicate to the terminal the subchannels allocated to the terminal.

S703: The access point receives the ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

In particular, after determining the subchannel in which the ACK or BA response is transmitted to the access point according to OFDMA physical layer signaling, the terminal transmits the ACK or BA response to the access point on the corresponding subchannel in OFDMA mode. .. That is, all terminals can simultaneously transmit an ACK or BA response to the access point on their corresponding subchannels, i.e., the ACK or BA responses of multiple terminals can be transmitted in parallel. In that case, the corresponding time frequency resources can be fully utilized.

In the data transmission indication method provided in this embodiment of the invention, the access point adds OFDMA physical layer signaling to an ACK or BA request frame transmitted to the terminal, where the OFDMA physical layer signaling. , ACK or BA response sent to the access point and used to indicate to the terminal the subchannel assigned to the terminal, thereby allowing multiple terminals to send an ACK or BA response on the corresponding subchannel. A method in which the access point can simultaneously transmit to the access point, that is, the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling, is an access point when the terminal transmits an ACK or BA response to the access point. Allows the access point to perform indications to more terminals, i.e., the number of terminals on which the access point points to a subchannel is not limited, and thus the ACK or BA response of multiple terminals is parallel to the access point. The corresponding time frequency resource is fully used.

FIG. 8 is a schematic flowchart of a tenth embodiment of the data transmission indication method according to the present invention. A method according to this embodiment is the process by which the access point sends an OFDMA physical layer signaling to the terminal carrying an OFDMA ACK request or an OFDMA BA request so that the terminal is on the subchannel corresponding to the terminal in OFDMA mode. Respond by ACK response or BA response. As shown in FIG. 8, the method includes:

S8011: The access point transmits orthogonal frequency division multiple access OFDMA physical layer signaling to the terminal.

In particular, MIMO physical layer signaling is used to carry an OFDMA ACK or OFDMA BA request, and an OFDMA ACK or OFDMA BA request is used to instruct a terminal to send an ACK or BA response to an access point in OFDMA mode. That is, the access point requires the terminal to respond to the access point with an ACK or BA response after the terminal has acquired the corresponding OFDMA + MU-MIMO data information, whereby the subsequent OFDMA + MU-MIMO data information is generated. Learn if it was transmitted successfully. OFDMA physical layer signaling is used to indicate to the terminal the corresponding subchannel assigned to the terminal as well as the ACK or BA response being sent to the access point.

S802: The access point transmits OFDMA + MU-MIMO data information to the terminal on the subchannel corresponding to the terminal in OFDMA + MU-MIMO mode.

As appropriate, OFDMA + MU-MIMO data information may or may not carry OFDMA physical layer signaling.

S803: The access point receives an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

In particular, after determining the subchannel in which the ACK or BA response is transmitted to the access point according to OFDMA physical layer signaling, the terminal accesses the ACK or BA response on the corresponding subchannel in OFDMA or OFDMA + MU-MIMO mode. Send to points (in this case, the access point needs to show not only the allocation of subchannels in OFDMA physical layer signaling, but also the allocation status of MU-MIMO spatiotemporal streams in each subchannel). .. That is, all terminals can simultaneously transmit an ACK or BA response to the access point on their corresponding subchannels, i.e., the ACK or BA responses of multiple terminals can be transmitted in parallel. In that case, the corresponding time frequency resources can be fully utilized.

In the data transmission induction method provided in this embodiment of the present invention, the access point transmits an OFDMA physical layer signaling to the terminal, where the OFDMA physical layer signaling transmits an ACK response or a BA response to the access point. At the same time, it is used to indicate to the terminal the subchannel assigned to the terminal, whereby multiple terminals can simultaneously send an ACK or BA response to the access point on the corresponding subchannel, ie. In the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling, the access point performs an indication to more terminals when the terminal sends an ACK response or a BA response to the access point. That is, the number of terminals on which the access point exhibits subchannels is not limited, and thus the ACK or BA response of multiple terminals is transmitted to the access point in parallel and the corresponding time frequency resources are sufficient. Used for.

FIG. 9 is a schematic flowchart of the eleventh embodiment of the data transmission indication method according to the present invention. A method according to this embodiment is the process by which the access point transmits OFDMA physical layer signaling and ACK or BA request frames to the terminal, whereby the terminal is placed on the subchannel corresponding to the terminal in OFDMA mode. Respond by ACK response or BA response. As shown in FIG. 9, the method includes:

S9011: The access point transmits orthogonal frequency division multiple access OFDMA physical layer signaling to the terminal.

In particular, OFDMA physical layer signaling is used to indicate to the terminal the corresponding subchannel assigned to the terminal as well as the ACK or BA response being transmitted to the access point.

S902: The access point transmits OFDMA + MU-MIMO data information to the terminal on the subchannel corresponding to the terminal in OFDMA + MU-MIMO mode.

As appropriate, OFDMA + MU-MIMO data information may or may not carry OFDMA physical layer signaling.

S903: The access point transmits an ACK request frame or a BA request frame to the terminal, where the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit sends an ACK response or a BA response in OFDMA mode. Used to instruct the terminal to send to the access point.

As appropriate, the ACK or BA request frame may or may not carry OFDMA physical layer signaling. Further, as appropriate, when the aforementioned OFDMA + MU-MIMO data information carries OFDMA physical layer signaling, the ACK request frame or BA request frame may not carry the OFDMA physical layer signaling, or the aforementioned OFDMA + MU-MIMO data information carries OFDMA. When not carrying physical layer signaling, the ACK or BA request frame may carry OFDMA physical layer signaling.

S904: The access point receives an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

In particular, after determining the subchannel in which the ACK or BA response is transmitted to the access point according to OFDMA physical layer signaling, the terminal is in OFDMA or OFDMA + MU-MIMO mode according to the dedicated information bits in the ACK request frame or BA request frame. Determines to send an ACK or BA response to the access point on the corresponding subchannel. That is, all terminals can simultaneously transmit an ACK or BA response to the access point on their corresponding subchannels, i.e., the ACK or BA responses of multiple terminals can be transmitted in parallel. In that case, the corresponding time frequency resources can be fully utilized.

In the data transmission induction method provided in this embodiment of the present invention, the access point transmits an OFDMA physical layer signaling to the terminal, where the OFDMA physical layer signaling transmits an ACK response or a BA response to the access point. At the same time, it is used to indicate to the terminal the subchannel assigned to the terminal, whereby multiple terminals can simultaneously send an ACK or BA response to the access point on the corresponding subchannel, ie. In the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling, the access point performs an indication to more terminals when the terminal sends an ACK response or a BA response to the access point. That is, the number of terminals on which the access point exhibits subchannels is not limited, and thus the ACK or BA response of multiple terminals is transmitted to the access point in parallel and the corresponding time frequency resources are sufficient. Used for.

FIG. 10 is a schematic flowchart of a twelfth embodiment of the data transmission indication method according to the present invention. The method of this embodiment involves a process of transmitting uplink OFDMA data information initiated by a terminal. This method specifically involves the following steps:

S1001: The access point receives the uplink transmission frame transmitted by the terminal.

In particular, the method according to this embodiment is the aforementioned process of transmitting uplink OFDMA data information initiated by STA, where the uplink transmission frame carries an OFDMA data transmission request.

The terminal may transmit the uplink transmission frame in the OFDM mode, and here, the uplink transmission frame may be of any kind in particular. The terminal can add an OFDMA data transmission request to the uplink transmission frame, where the OFDMA data transmission request is used to require the access point to complete subsequent data transmission in OFDMA mode. ..

After receiving the terminal's uplink transmission frame, whether the access point switches the terminal to OFDMA mode to perform transmission, depending on the terminal's OFDMA data transmission request or current network conditions, eg, another at the access point. Determine if there is a request from the terminal. If the access point determines that the terminal needs to be switched to OFDMA mode, the access point either uses OFDMA mode in subsequent data transmissions, or the access point's determination results indicate that the terminal switches to OFDMA mode. If the result is not possible, the access point continues to perform data transmission in OFDM mode.

S1002: The access point transmits OFDMA physical layer signaling to the terminal.

In particular, when the access point determines that the terminal needs to be switched to OFDMA mode according to an OFDMA data transmission request or current network conditions and performs data transmission in OFDMA mode, the access point performs OFDMA physical layer signaling. Transmit to the terminal, where OFDMA physical layer signaling is used to instruct the terminal to transmit uplink OFDMA data information on each corresponding subchannel.

The OFDMA physical layer signaling can be carried in the OFDM preamble or the NDPA frame in the above-described embodiment, or the NDPA frame and the OFDM preamble can cooperate with each other to carry the OFDMA physical layer signaling. Please note. References may be made to the aforementioned embodiments for a particular process, details of which are not described again here. As appropriate, an example is used in which OFDMA physical layer signaling is carried in an OFDM preamble (see example in FIG. 10a), where the OFDM preamble portion can only be transmitted on the primary channel or multiple subchannels (primary channel). It may be transmitted on (including), and reference to the example in FIG. 10b is made.

Optionally, after S1002, the access point may further transmit terminal downlink OFDMA data information on each subchannel corresponding to the aforementioned terminal. References may be made to the aforementioned embodiments of the downlink OFDMA data transmission process, the details of which are not described again herein.

The terminal learns the subchannel in which the terminal transmits uplink OFDMA data information to the access point by using the subchannels indicated by OFDMA physical layer signaling, i.e., the access point additionally uplinks OFDMA data information. The signaling indication that occurs when instructing the terminal to transmit is avoided and the system efficiency is improved.

S1003: The access point receives the uplink OFDMA data information transmitted by the terminal on the corresponding subchannel in OFDMA mode.

In particular, after determining the subchannel in which the uplink OFDMA data information is transmitted to the access point according to OFDMA physical layer signaling, the terminal transmits the uplink OFDMA data information to the access point on that subchannel.

As appropriate, after S1002, if the access point further transmits downlink OFDMA data information to the terminal, the terminal receives and fixed the downlink OFDMA data information transmitted by the access point on the corresponding subchannel. After waiting for a length of time, the terminal transmits the uplink OFDMA data information associated with the terminal over the subchannel.

In the data transmission indication method provided in this embodiment of the invention, the terminal transmits an uplink transmission frame to the access point, whereby the access point uses OFDMA physical layer signaling to make each terminal. On the other hand, it indicates a subchannel to which uplink OFDMA data information is transmitted, and thus each terminal may transmit data to the access point on the corresponding subchannel. That is, the subchannels are allocated to the terminals in such a way that the access points transmit OFDMA physical layer signaling, so that when uplink OFDMA data information is transmitted to the access points, the access points have more terminals. The signaling indication that occurs when the access point additionally instructs the terminal to transmit uplink OFDMA data information can be performed, and the system efficiency is improved.

Further, a method according to this embodiment is after receiving the uplink OFDMA data information transmitted by the terminal in the aforementioned scenario shown in FIG. 10 in which the terminal transmits uplink OFDMA data information to the access point. , The access point is directed to the process of sending an ACK or BA response to the terminal on the corresponding subchannel. Furthermore, after S1003, the method further comprises:

S1004: The access point transmits an ACK response or a BA response corresponding to the uplink OFDMA data information on the subchannel corresponding to the terminal in OFDMA mode.

In particular, the terminal transmits uplink OFDMA data information to the access point on the subchannel corresponding to the terminal, where the uplink OFDMA data information carries an OFDMA ACK request or an OFDMA BA request and is an OFDMA ACK request or OFDMA. The BA request is used to instruct the access point to send an ACK or BA response to the terminal in OFDMA mode, i.e. to feed the access point the transmission status of uplink OFDMA data information to the terminal. ..

The access point is the entity that transmits the OFDMA physical layer signaling, so that the access point sends an ACK or BA response of the uplink OFDMA data information associated with the terminal directly to the terminal on the corresponding subchannel. It can be transmitted, whereby the terminal learns whether the uplink OFDMA data has been successfully transmitted.

Similarly, in the frame format and the induction method according to the first to third embodiments, the access point is parallel to the uplink multi-user transmission data (uplink OFDMA data information or uplink MU-MIMO data information) in the OFDMA mode. Note that it is applicable when responding to the terminal by ACK or BA response.

In the data transmission indication method provided in this embodiment of the invention, the ACK or BA request is carried in the uplink OFDMA data information transmitted by the terminal to the access point, whereby the access point corresponds. An ACK response or BA response corresponding to the uplink OFDMA data information can be transmitted to the terminal on the subchannel. That is, in the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling, the access point performs an indication to more terminals when the terminal transmits uplink OFDMA data to the access point. That is, the number of terminals on which the access point exhibits subchannels is not limited, and thus the terminals have successfully transmitted uplink OFDMA data according to the ACK or BA response sent by the access point. You can learn how.

FIG. 11 is a schematic flowchart of a thirteenth embodiment of the data transmission indication method according to the present invention. The method of this embodiment involves a process of transmitting uplink OFDMA data information initiated by an access point. This method specifically involves the following steps:

S1101: The access point transmits OFDMA physical layer signaling to the terminal.

In particular, the OFDMA physical layer signaling can be carried in the OFDM preamble or in the NDPA frame in the aforementioned embodiment, or the NDPA frame and the OFDM preamble cooperate with each other to carry the OFDMA physical layer signaling. obtain. References may be made to the aforementioned embodiments for a particular process, details of which are not described again here.

OFDMA physical layer signaling is specifically used to correspond to a terminal, to transmit uplink OFDMA data information to the access point and to indicate to the terminal the subchannels assigned to the terminal. Optionally, in all embodiments of the invention, OFDMA physical layer signaling is used for subchannel allocation for uplinks, for downlinks only, or for both uplinks and downlinks. It may contain information bits used to indicate to the terminal what is to be done. In this embodiment, the information bits in OFDMA physical layer signaling indicate to the terminal that the subchannel is the subchannel used for uplink transmission. If the access point acquires channel usage rights, the terminal is instructed to send uplink OFDMA data information to the access point on the corresponding subchannel by using the delivered OFDMA physical layer signaling. To. An example is used in which OFDMA physical layer signaling is carried in an OFDM preamble, and the OFDM portion can be transmitted on multiple subchannels (see 11a) or only on the primary channel (see 11b).

S1102: The access point receives the uplink OFDMA data information transmitted by the terminal on the corresponding subchannel in OFDMA mode.

In particular, after determining the subchannel in which the uplink OFDMA data information is transmitted to the access point according to OFDMA physical layer signaling, the terminal transmits the uplink OFDMA data information to the access point on that subchannel and thus access. The point can receive multiple pieces of uplink OFDMA data information transmitted by the terminal on the corresponding subchannel and the corresponding time frequency resources are fully used.

In the data transmission indication method provided in this embodiment of the invention, the access point indicates a subchannel to which uplink OFDMA data information is transmitted to the terminal by using OFDMA physical layer signaling. Thereby, each terminal can transmit the uplink data to the access point on the corresponding subchannel, and the corresponding time frequency resource is fully used. In addition, subchannels are allocated to each terminal in such a way that the access point sends OFDMA physical layer signaling, so that when the terminal sends uplink OFDMA data to the access point, the access point has more. Indications to terminals can be performed, i.e., the number of terminals to which the access point points to a subchannel is not limited.

FIG. 12 is a schematic flowchart of a 14th embodiment of the data transmission indication method according to the present invention. As shown in FIG. 12, the method includes:

S1201: The terminal receives the OFDMA physical layer signaling transmitted by the access point, where the OFDMA physical layer signaling is used to indicate to the terminal the subchannel allocated by the access point to the terminal. In OFDMA physical layer signaling, the terminal identifier and the subchannel information corresponding to the terminal identifier are included.

In particular, the terminal receives the OFDMA physical layer signaling transmitted by the access point in OFDM mode, wherein in the OFDM mode herein, the access point transmits OFDMA physical layer signaling to the terminal within the coverage area of the access point. However, another terminal within the access point's coverage area also refers to a mode in which OFDMA physical layer signaling can be acquired and listened for for proper demodulation. The OFDMA physical layer signaling in this embodiment of the present invention includes a terminal identifier and subchannel information corresponding to the terminal identifier.

The channel bandwidth of the subchannel is not limited in the present invention, and the access point determines the bandwidth of the subchannel according to the bandwidth requirement of the terminal. In addition, the subchannels shown may be presented in multiple forms, which can be the center frequency and bandwidth of the subchannel, or the number and bandwidth of the starting frequency band. , Or the range of the number of channels from the start frequency band to the end frequency band, which is not limited in the present invention.

S1202: The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling.

In particular, each terminal can determine the subchannel corresponding to the terminal according to the content included in the OFDMA physical layer signaling and execute the corresponding operation on the corresponding subchannel, for example, on the subchannel corresponding to the terminal. The data belonging to the terminal and transmitted by the access point can be received, or the corresponding response information or uplink data information can be transmitted to the access point on the subchannel corresponding to the terminal. The terminal identifier in the above-mentioned OFDMA physical layer signaling may be a single terminal identifier or an identifier of a terminal group, and the terminal group may include a plurality of terminals.

The subchannels represented by OFDMA physical layer signaling according to this embodiment for terminals may correspond to one terminal or may correspond to multiple terminals. For example, multiple terminals may be grouped into one group, and OFDMA physical layer signaling allocates subchannels to this group, in which case all terminals in the group have subchannels. Can be used.

The format of the signaling portion in the prior art can only support a bandwidth of 20 MHz, when the user is allocated for each subcarrier in 48 subcarriers and bandwidth greater than 20 MHz can be used. , The prior art does not have a corresponding extended solution to support that bandwidth. However, OFDMA physical layer signaling in this embodiment of the invention can support greater bandwidth and, for a large number of terminals, the subchannels to be allocated can be allocated and shown to the plurality of terminals. , Where the subchannel comprises one or more subcarriers. Therefore, the subject matter of this embodiment of the present invention and the prior art is different (in the prior art, the subject matter is to allocate a user to a subcarrier, and in this embodiment of the present invention, the subject matter is a subchannel to the user. (Or to allocate subcarriers), the prior art can only invent to 48 terminals due to subcarrier restrictions, and indicating subchannels to terminals by OFDMA physical layer signaling depends on bandwidth. Unrestricted, subchannels can be allocated to more terminals (more than 48 users) in a larger bandwidth. Indeed, this embodiment of the invention can still allocate subchannels to less than 48 terminals.

In the data transmission indication method provided in this embodiment of the invention, the terminal receives the OFDMA physical layer signaling transmitted by the access point and determines the subchannel corresponding to the terminal, thereby corresponding. Perform the corresponding action on the subchannel. That is, the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling allows the access point to indicate the subchannel to more terminals, that is, the access point indicates the subchannel. There is no limit to the number of terminals.

FIG. 13 is a schematic flowchart of Embodiment 15 of the data transmission indication method according to the present invention. This method according to this embodiment is a feasible implementation in which the subchannel is presented to the terminal by using OFDMA physical layer signaling. Further, based on the embodiment shown in FIG. 12, the terminal identifier may be the identifier of one or more terminal groups, each terminal group includes at least one terminal, and the subchannel information includes subchannel information. Includes uplink subchannels or downlink subchannels or uplink and downlink bidirectional subchannels. The method includes:

S1301: The terminal receives the mapping relationship between the terminal group identifier and the terminal address, where the mapping relationship is transmitted by the access point.

In particular, the terminal needs to know the terminal group to which the terminal belongs, and in that case, the subchannel corresponding to the terminal can be known only when the access point allocates the subchannel to the terminal group. Therefore, the access point needs to transmit the mapping relationship between the terminal group identifier and the terminal address to each terminal, so that each terminal learns the terminal group in which the terminal is arranged. For a simple method in which terminals are notified of the mapping relationship between the terminal group identifier and the address of each terminal in the form of a grouping management frame, the format of Table 1 and related explanations may be referred to, and the present invention may be made. No details are given here again in this embodiment of.

S1302: The terminal receives the OFDMA physical layer signaling transmitted by the access point, where the OFDMA physical layer signaling includes the terminal identifier and the subchannel information corresponding to the terminal identifier, and the OFDMA physical layer signaling , Used to indicate to each terminal group that the allocated subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel.

As appropriate, OFDMA physical layer signaling means that the subchannel assigned to the terminal is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel by using a dedicated indication bit. Can be shown. That is, OFDMA physical layer signaling can not only indicate an allocated subchannel for a terminal group, but the subchannel allocated to the terminal group can be an uplink subchannel or a downlink subchannel or an uplink and down. It can also be shown to be a link bidirectional subchannel.

In particular, the terminal identifier is an identifier for one or more terminal groups, and OFDMA physical layer signaling is used to indicate to one or more terminal groups the subchannels assigned to each terminal group. , Here, the terminal group and the subchannel have a one-to-one correspondence.

References may be made to the formats and related descriptions shown in Tables 2 and 3 for the relevant fields included in the OFDMA physical layer signaling indication, details of which in this embodiment of the invention are again here Not explained.

S1303: The terminal determines that the terminal is arranged in the terminal group according to the mapping relationship, and in that case, the terminal determines that the subchannel corresponding to the terminal group is the subchannel corresponding to the terminal. judge.

In the data transmission indication method provided in this embodiment of the present invention, the access point carries and includes a terminal identifier and subchannel information corresponding to the terminal identifier to transmit to the terminal the OFDMA physical layer signaling. , The access point further transmits the mapping relationship between the terminal group identifier and the address of each terminal to each terminal, whereby each terminal learns the terminal group in which the terminal is located, and corresponds to the terminal. Further learn the subchannel to do, thereby performing the corresponding action on that subchannel. That is, the method in which the access point allocates a subchannel to each terminal according to the above-mentioned OFDMA physical layer signaling allows the access point to indicate the subchannel to more terminals, that is, the access point is a subchannel. There is no limit to the number of terminals that indicate.

Embodiment 16 of the present invention provides a data transmission indication method. This method, according to this embodiment, is another feasible implementation in which the access point indicates a subchannel to the terminal by using OFDMA physical layer signaling. Based on the embodiment shown in FIG. 12, OFDMA physical layer signaling may include a terminal identifier and subchannel information corresponding to the terminal identifier, where the terminal identifier is a single terminal group identifier. The terminal group comprises at least two terminals, and OFDMA physical layer signaling is such that each terminal in the terminal group has an uplink subchannel or a downlink subchannel or an uplink and a downlink. Used to indicate that it is a bidirectional subchannel.

As appropriate, OFDMA physical layer signaling means that the subchannel assigned to the terminal is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel by using a dedicated indication bit. Can be shown. The terminals and subchannels in the terminal group have a one-to-one correspondence. That is, the above-mentioned OFDMA physical layer signaling can not only indicate the allocated subchannel for each terminal in the terminal group, but also the subchannel allocated to each terminal in the terminal group is an uplink subchannel. Alternatively, it may be indicated that it is a downlink subchannel or an uplink and downlink bidirectional subchannel.

In particular, references to the formats and related descriptions shown in Table 4 may be made to the relevant fields included in the OFDMA physical layer signaling indication, details of which are described herein again in this embodiment of the invention. Not done.

Since each terminal in the aforementioned terminal group in Table 4 corresponds to a different subchannel, and OFDMA physical layer signaling can support a larger bandwidth (not limited to 20 MHz bandwidth), the subchannel is Can be shown on more terminals.

In the data transmission indication method provided in this embodiment of the invention, the terminal receives the OFDMA physical layer signaling transmitted by the access point and learns the corresponding subchannels according to the OFDMA physical layer signaling. Thereby, the terminal can perform the corresponding operation on the subchannel corresponding to the terminal. That is, the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling allows the access point to indicate the subchannel to more terminals, that is, the access point indicates the subchannel. There is no limit to the number of terminals.

FIG. 14 is a schematic flowchart of a 17th embodiment of the data transmission indication method according to the present invention. A method according to this embodiment is that the terminal receives the OFDMA physical layer signaling carried in the OFDM preamble, learns the subchannel corresponding to the terminal according to the OFDMA physical layer signaling, and by the access point on the subchannel corresponding to the terminal. This is the process of receiving the transmitted downlink OFDMA data information. The method includes:

S1401: The terminal receives the OFDM preamble transmitted by the access point, where the OFDM preamble carries OFDMA physical layer signaling.

S1402: The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling.

In particular, the terminal receives the OFDM preamble transmitted by the access point in OFDM mode, where the OFDM mode herein is such that the access point transmits the OFDM preamble to any terminal within the coverage area of the access point. Refers to the mode. The OFDM preamble includes STF, LTF, L-SIG, and UHT-SIG-A, where UHT-SIG-A carries OFDMA physical layer signaling. When an access point transmits an OFDM preamble in OFDM mode, it means that the access point transmits an OFDM preamble to a terminal, but in this case, the access point does not know the specific terminal to which the OFDM preamble is transmitted. Therefore, the access point sends the OFDM preamble to any terminal, and all active terminals listen and receive the OFDM preamble, in which case they acquire OFDMA physical layer signaling, thereby corresponding to the terminal. Note that you will learn.

References may be made to the description of Embodiment 14 to Embodiment 16 regarding the content included in OFDMA physical layer signaling in this embodiment of the present invention, and details will not be described here again in this embodiment of the present invention. Please note.

S1403: The terminal receives the downlink OFDMA data information transmitted by the access point on the corresponding subchannel, where the downlink OFDMA data information includes OFDMA preambles and OFDMA data, and the OFDMA preambles are switched. Includes field and UHT-SIG-B.

In particular, the access point transmits downlink OFDMA data information on the subchannel corresponding to the terminal in OFDMA mode, that is, the access point simultaneously transmits a plurality of downlink OFDMA data information on each subchannel corresponding to the terminal. It can be sent to the terminal, thus reducing signaling overhead and resulting in multi-user diversity gains. In addition, the terminal-corresponding subchannel may further include the BSS primary channel, where the primary channel is used by access points and terminals to exchange control and management signaling, ie. After fully transmitting OFDMA physical layer signaling on the primary channel, the access point can release the primary channel or use the primary channel with another subchannel to bring downlink OFDMA data information to the terminal. Can be sent.

References may be made to the formats shown in Table 5 and related descriptions for the data transmission frame formats of OFDM preambles and downlink OFDMA data information, and details are not described here again in this embodiment of the invention. ..

In addition, the access point needs to allocate subchannels to the terminal group and, in fact, allocates subchannels to each terminal, but the data transmitted by the access point each time is within the terminal group. Sent to a particular terminal, and therefore the terminal needs to learn the actual terminal address of the terminal in the terminal group. Therefore, the access point needs to add a specific destination terminal address to the UHT-SIG-B or medium access control (MAC) layer header transmitted on each subchannel. Here, the destination terminal address is the address of the element in the terminal group indicated by the group number in Tables 1 to 4, and the terminal is the destination terminal address in the UHT-SIG-B or the MAC layer header. To read.

Correspondingly, after determining the OFDM preamble received in the OFDM manner, the terminal reads the OFDMA physical layer signaling of UHT-SIG-A, and according to the address of the terminal, the terminal is indicated by OFDMA physical layer signaling. Determine if it is in a terminal group. If the terminal is in a terminal group, the terminal is switched to OFDMA mode, further switched to the subchannel indicated according to the subchannel information corresponding to the terminal group, further received OFDMA preambles, and received UHT-. According to the destination terminal address carried in the SIG-B or MAC layer header, it determines if the terminal is the destination terminal, and if so, the terminal reads subsequent OFDMA data, or otherwise the terminal. Stops reading. If it is determined that the terminal is not in the terminal group, the terminal may choose not to switch to OFDMA mode and continue to acquire OFDMA preambles and OFDMA data in an OFDM manner.

In the steps described above, regardless of whether the terminal is a destination terminal or not, the terminal reads the length of time in the data frame format (ie, including OFDM preamble, OFDMA preamble, and OFDMA data) and is required for transmission. The time can be determined. The non-destination terminal sets a network allocation vector (Network Allocation Vector, hereinafter abbreviated as NAV) of the terminal according to the time length. For the NAV time length, the non-destination terminal may choose not to listen again on any subchannel in order to reduce the terminal's power loss. In addition, the non-destination terminal can similarly set the NAV according to the length of the L-SIG, where the length may indicate the total length of a plurality of data frames and is occupied by the total length. Used by the terminal to calculate the time.

In the data transmission indication method provided in this embodiment of the invention, the terminal receives an OFDM preamble carrying OFDMA physical layer signaling and obtains OFDMA physical layer signaling from the OFDM preamble, whereby the OFDMA physical layer is obtained. Following signaling, the terminal learns the subchannel in which it should receive the downlink OFDMA data information corresponding to the terminal. That is, the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling allows the access point to perform an indication to more terminals when the terminal receives the data of the access point. That is, the number of terminals on which the access point indicates a subchannel is not limited.

FIG. 15 is a schematic flowchart of Embodiment 18 of the data transmission indication method according to the present invention. In a method according to this embodiment, the terminal acquires OFDMA physical layer signaling carried in an NDPA frame, learns a subchannel corresponding to the terminal according to OFDMA physical layer signaling, and is performed by an access point on the subchannel corresponding to the terminal. This is the process of receiving the transmitted downlink OFDMA data information. The method includes:

S1501: The terminal receives the NDPA frame transmitted by the access point, where the NDPA frame carries OFDMA physical layer signaling.

In particular, exclusive NDPA frames are used in this embodiment of the invention to carry OFDMA physical layer signaling and to reduce the overhead introduced when OFDMA physical layer signaling is transmitted. .. References may be made to Table 6 for the format of the NDPA frame in this embodiment of the invention, the details of which are not described here again in this embodiment of the invention.

The access point may transmit NDPA frames to terminals within the access point's coverage area in OFDM mode, and may transmit NDPA frames on the primary channel, or NDPA frames on multiple subchannels. Note that it may be the one to transmit and all other terminals can listen to get the NDPA frame. In that case, the access point further needs to transmit the OFDM preamble in OFDM mode. The above-mentioned OFDMA physical layer signaling can be carried in NDPA frames, or in both NDPA frames and OFDM preambles, but generally only in NDPA frames to reduce signaling overhead. .. Optionally, when the NDPA frame carries OFDMA physical layer signaling, the OFDM preamble may further indicate a particular terminal identifier within the terminal group.

S1502: The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling.

References may be made to the description of Embodiment 14 to Embodiment 16 regarding the content included in OFDMA physical layer signaling in this embodiment of the present invention, and details will not be described here again in this embodiment of the present invention. Please note.

S1503: The terminal receives the downlink OFDMA data information transmitted by the access point on the corresponding subchannel, where the downlink OFDMA data information includes OFDMA preambles and OFDMA data, and the OFDMA preambles are switched. Includes field and UHT-SIG-B.

In particular, the access point transmits downlink OFDMA data information in OFDMA mode, i.e., the access point can transmit downlink OFDMA data information to multiple terminals simultaneously on each subchannel corresponding to the terminal. Therefore, the corresponding time frequency resources can be fully utilized. In addition, the terminal-corresponding subchannel may further include the BSS primary channel, where the primary channel is used by access points and terminals to exchange control and management signaling, ie. After fully transmitting OFDMA physical layer signaling on the primary channel, the access point can release the primary channel or use the primary channel with another subchannel to bring downlink OFDMA data information to the terminal. Can be sent.

The terminal detects and receives the NDPA frame in the OFDM system in the idle state and reads the OFDMA physical layer signaling in the OFDM system, in which case the terminal also receives the OFDM preamble in the OFDM system. References may be made to the formats shown in Table 5 and related descriptions for the data transmission frame formats of OFDM preambles and downlink OFDMA data information, and details are not described here again in this embodiment of the invention. ..

In addition, the access point must allocate subchannels to the terminal group and, in fact, allocates subchannels to each terminal, but the data transmitted by the access point each time is within the terminal group. Sent to a particular terminal, and therefore the terminal needs to learn the actual terminal address of the terminal in the terminal group. Therefore, the access point further needs to add a specific destination terminal address to the UHT-SIG-B or MAC layer header transmitted on each subchannel, where the destination terminal address is from Table 1. It is the address of the element in the terminal group indicated by the group number in Table 4, and the terminal reads the destination terminal address in the UHT-SIG-B or MAC layer header.

Correspondingly, after determining the OFDM preamble received in the OFDM system, the terminal determines whether the terminal is in the terminal group indicated by OFDMA physical layer signaling according to the address of the terminal. If the terminal is in a terminal group, the terminal is switched to OFDMA mode, further switched to the subchannel indicated according to the subchannel information corresponding to the terminal group, further received OFDMA preambles, and received UHT-. According to the destination terminal address carried in the SIG-B or MAC layer header, it determines if the terminal is the destination terminal, and if so, the terminal reads subsequent OFDMA data, or otherwise the terminal. Stops reading. If it is determined that the terminal is not in the terminal group, the terminal may choose not to switch to OFDMA mode and continue to acquire OFDMA preambles and OFDMA data in an OFDM manner.

In the steps described above, regardless of whether the terminal is a destination terminal or not, the terminal reads the length of time in the data frame format (ie, including OFDM preamble, OFDMA preamble, and OFDMA data) and is required for transmission. The time can be determined. The non-destination terminal sets the NAV of the terminal according to the time length. For the NAV time length, the non-destination terminal may choose not to listen again on any subchannel in order to reduce the terminal's power loss. In addition, the non-destination terminal can similarly set the NAV according to the length of the L-SIG, where the length may indicate the total length of a plurality of data frames and is occupied by the total length. Used by the terminal to calculate the time.

In the data transmission indication method provided in this embodiment of the invention, the terminal carries OFDMA physical layer signaling and receives NDPA frames transmitted by the access point, whereby the terminal receives OFDMA physical layer from NDPA frames. The signaling may be acquired, thereby learning the subchannel in which the terminal should receive the downlink OFDMA data information corresponding to the terminal in accordance with OFDMA physical layer signaling, thereby learning on the corresponding subchannel. Receives downlink OFDMA data information transmitted by the access point. That is, the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling allows the access point to perform an indication to more terminals when the terminal receives the data of the access point. That is, the number of terminals on which the access point indicates a subchannel is not limited.

FIG. 16 is a schematic flowchart of a 19th embodiment of the data transmission indication method according to the present invention. A method according to this embodiment is the process by which the access point sends an NDPA frame and an OFDM preamble to the terminal that separately carry the content contained in the OFDMA physical layer signaling so that the terminal can from the NDPA frame and the OFDM preamble to the OFDMA. Acquiring physical layer signaling, therefore, the terminal learns the subchannel corresponding to the terminal according to OFDMA physical layer signaling and receives the downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal. To do. The method includes:

S1601: The terminal receives the NDPA frame and OFDM preamble transmitted by the access point.

In particular, the NDPA frame and the OFDM preamble can carry OFDMA physical layer signaling in two ways. These methods are independent as follows.

First method: The terminal receives the NDPA frame and OFDM preamble transmitted by the access point, where the NDPA frame carries the terminal identifier in the above-mentioned OFDMA physical layer signaling, and the OFDM preamble is of the terminal. Corresponds to the identifier and carries the subchannel information within the OFDMA physical layer signaling described above. The terminal identifier of the present specification may be an identifier of one or more terminal groups in the second embodiment, and there is a one-to-one correspondence between the subchannel and the terminal group, and further, a single one in the third embodiment. It may be an identifier of the terminal group of, and there is a one-to-one correspondence between the subchannel and the terminals in the group.

Second method: The terminal receives the NDPA frame and OFDM preamble transmitted by the access point, where the NDPA frame corresponds to the identifier of the terminal and the subchannel information in the OFDMA physical layer signaling described above. And the OFDM preamble carries the terminal identifier in the OFDMA physical layer signaling described above. The terminal identifier of the present specification may be an identifier of one or more terminal groups in the second embodiment, and there is a one-to-one correspondence between the subchannel and the terminal group, and further, a single one in the third embodiment. It may be an identifier of the terminal group of, and there is a one-to-one correspondence between the subchannel and the terminals in the group.

That is, the NDPA frame and the OFDM preamble can cooperate with each other to indicate OFDMA physical layer signaling. The user group information field in Table 5 may include a terminal identifier, and may further include subchannel information corresponding to the terminal identifier. In addition, the control information field in Table 5 may further indicate the valid time length of the subchannel information of the terminal or terminal group currently shown, whereby the terminal is subject to the length of time. , The terminal or terminal group subchannel information indication can be determined to be valid or expired, and if not, the terminal can continue to receive and transmit data using the current subchannel. it can.

If the NDPA frame carries only the terminal identifier, the OFDM preamble corresponds to the terminal identifier and needs to carry more subchannel information within the NDPA frame, or if the NDPA frame carries only the subchannel information. , The OFDM preamble needs to correspond to the subchannel information and further carry the identifier of the terminal in the NDPA frame.

S1602: The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling.

References may be made to the description of Embodiment 14 to Embodiment 16 regarding the content included in OFDMA physical layer signaling in this embodiment of the present invention, and details will not be described here again in this embodiment of the present invention. Please note.

S1603: The terminal receives the downlink OFDMA data information transmitted by the access point on the corresponding subchannel, where the downlink OFDMA data information includes OFDMA preambles and OFDMA data, and the OFDMA preambles are switched. Includes field and UHT-SIG-B.

In particular, the access point transmits downlink OFDMA data information in OFDMA mode, i.e., the access point can transmit downlink OFDMA data information to multiple terminals simultaneously on each subchannel corresponding to the terminal. Therefore, the corresponding time frequency resources can be fully utilized. In addition, the terminal-corresponding subchannel may further include the BSS primary channel, where the primary channel is used by access points and terminals to exchange control and management signaling, ie. After fully transmitting OFDMA physical layer signaling on the primary channel, the access point can release the primary channel or use the primary channel with another subchannel to bring downlink OFDMA data information to the terminal. Can be sent.

The terminal detects and receives the NDPA frame in the OFDM system in the idle state and reads a part of the OFDMA physical layer signaling carried in the NDPA frame, in which case the terminal also receives the OFDM preamble in the OFDM mode. Then, while supplementing the OFDMA physical layer signaling, that part of the content within the OFDM preamble is read.

References may be made to the formats shown in Table 5 and related descriptions for the data transmission frame formats of OFDM preambles and downlink OFDMA data information, and details are not described here again in this embodiment of the invention. ..

In addition, the access point needs to allocate subchannels to the terminal group and, in fact, allocates subchannels to each terminal, but the data transmitted by the access point each time is within the terminal group. Sent to a particular terminal, and therefore the terminal needs to learn the actual terminal address of the terminal in the terminal group. Therefore, the access point further needs to add a specific destination terminal address to the UHT-SIG-B or MAC layer header transmitted on each subchannel, where the destination terminal address is from Table 1. It is the address of the element in the terminal group indicated by the group number in Table 4, and the terminal reads the destination terminal address in the UHT-SIG-B or MAC layer header.

Correspondingly, after determining the OFDM preamble received in OFDM mode, the terminal determines whether the terminal is in the terminal group indicated by OFDMA physical layer signaling according to the address of the terminal. If the terminal is in a terminal group, the terminal is switched to OFDMA mode, further switched to the subchannel indicated according to the subchannel information corresponding to the terminal group, further received OFDMA preambles, and received UHT-. According to the destination terminal address carried in the SIG-B or MAC layer header, it determines if the terminal is the destination terminal, and if so, the terminal reads subsequent OFDMA data, or otherwise the terminal. Stops reading. If it is determined that the terminal is not in the terminal group, the terminal may choose not to switch to OFDMA mode and continue to acquire OFDMA preambles and OFDMA data in OFDM mode.

In the steps described above, regardless of whether the terminal is a destination terminal or not, the terminal reads the length of time in the data frame format (ie, including OFDM preamble, OFDMA preamble, and OFDMA data) and is required for transmission. The time can be determined. The non-destination terminal sets the NAV of the terminal according to the time length. For the NAV time length, the non-destination terminal may choose not to listen again on any subchannel in order to reduce the terminal's power loss. In addition, the non-destination terminal can similarly set the NAV according to the length of the L-SIG, where the length may indicate the total length of a plurality of data frames and is occupied by the total length. Used by the terminal to calculate the time.

In the data transmission indication method provided in this embodiment of the invention, the terminal carries OFDMA physical layer signaling, receives NDPA frames and OFDM preambles transmitted by the access point, and in NDPA frames and OFDM preambles. By using OFDMA physical layer signaling, the terminal learns the subchannel in which the terminal should receive the downlink OFDMA data information corresponding to the terminal, thereby receiving the downlink OFDMA data information transmitted by the access point. .. That is, the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling allows the access point to perform an indication to more terminals when the terminal receives the data of the access point. That is, the number of terminals on which the access point indicates a subchannel is not limited.

Further, based on the embodiments shown in FIGS. 14 to 16, as a feasible implementation of the embodiments of the present invention, the methods involved in this implementation receive downlink OFDMA data information transmitted by the access point. This is the process by which the terminal sends an ACK or BA response to the access point on the corresponding subchannel. As appropriate, the above-mentioned OFDMA physical layer signaling or OFDMA data carries an OFDMA ACK request or OFDMA BA request, and the OFDMA ACK request or OFDMA BA request sends an ACK response or BA response to the access point in OFDMA mode to the terminal. Used to direct, in which case the above-mentioned OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is sent to the access point to indicate the subchannel allocated to the terminal. Further used in. That is, the operation of S20 may be performed after S1403 or S1503 or S1603.

S30: The terminal transmits an ACK response or a BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

In particular, each terminal needs to respond to the access point with an ACK or BA response to indicate that the downlink OFDMA data information transmitted by the access point has been correctly received by each terminal. If the access point adds an OFDMA ACK or OFDMA BA request to the downlink OFDMA data information or OFDMA physical layer signaling, the downlink OFDMA data information on the subchannel corresponding to the terminal according to the access point's OFDMA physical layer signaling indication. After receiving, the terminal may respond directly with an ACK or BA response in OFDMA mode on the subchannel indicated by OFDMA physical layer signaling. The ACK response corresponds to the OFDMA ACK request and the BA response corresponds to the OFDMA BA request. In that case, the access point receives an ACK or BA response sent by the terminal on each corresponding subchannel. That is, it is enabled that a plurality of terminals simultaneously send a response to the access point on the subchannel corresponding to the terminal, and the corresponding time frequency resources are fully used.

In the data transmission indication method provided in this embodiment of the invention, the terminal receives downlink OFDMA data information transmitted by the access point on the subchannel indicated by OFDMA physical layer signaling, and a plurality. The terminal can simultaneously send an ACK or BA response to the access point on the corresponding subchannel, i.e., a method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling is such that the terminal ACKs. When sending a response or BA response to an access point, it allows the access point to perform indications to more terminals, i.e., the number of terminals on which the access point exhibits subchannels is not limited and therefore. The ACK or BA response of multiple terminals is transmitted to the access point in parallel, and the corresponding time frequency resources are fully used.

Further, based on the embodiments shown in FIGS. 14 to 16, as another feasible implementation of the embodiments of the present invention, the method according to this embodiment is an OFDMA physical layer signaling transmitted by an access point. And after receiving the downlink OFDMA data information, the terminal is the process of receiving a single ACK request frame or BA request frame transmitted by the access point, whereby the terminal is a sub-indicated by OFDMA physical layer signaling. An ACK or BA response can be sent to the access point on the channel. The OFDMA physical layer signaling described above may correspond to a terminal and may be further used to indicate a subchannel allocated to the terminal as well as an ACK or BA response being transmitted to the access point. After S202 or S302 or S402, the next step may be performed.

S40: The terminal receives the ACK request frame or BA request frame transmitted by the access point, where the ACK request frame or BA request frame includes a dedicated information bit, and the dedicated information bit is an ACK response or an ACK response in OFDMA mode. Used to instruct the terminal to send a BA response to the access point.

In particular, after transmitting the downlink OFDMA data information to the terminal, the access point may further transmit a single ACK request frame or BA request frame to the terminal (see FIG. 4b, where the BA request frames are individually. An example of transmission is used), where the ACK or BA request frame contains a dedicated information bit, which causes the terminal to transmit an ACK or BA response to the access point in OFDMA mode. Used to direct to. As appropriate, the ACK or BA request frame may or may not carry OFDMA physical layer signaling. The terminal determines which subchannel the terminal sends an ACK or BA response to the access point according to OFDMA physical layer signaling.

The representation of the dedicated information bit is the frame type used to instruct the terminal to send an ACK or BA request frame in OFDMA mode to send an ACK or BA response to the access point (ie, a conventional ACK request). It may be identified as a frame or a new frame type different from the BA request frame). The representation of another dedicated information bit may also be as follows, and if the frame type of the ACK request frame or BA request frame has not changed, the dedicated information bit will be ACK-responsive or ACK-responsive in OFDMA mode. Used directly to instruct the terminal to send a BA response to the access point.

In addition, as with the OFDM preamble, ACK or BA request frames can only be transmitted on the primary channel or can be transmitted on all subchannels in a duplicated transmission fashion.

S21: The terminal transmits an ACK response or a BA response to the access point on the corresponding subchannel in OFDMA mode.

In particular, after learning a subchannel in which the terminal sends an ACK or BA response to the access point according to OFDMA physical layer signaling, the terminal sends an ACK or BA response to the access point on the corresponding subchannel in OFDMA mode. To do. That is, all terminals can simultaneously transmit an ACK or BA response to the access point on their corresponding subchannels, i.e., the ACK or BA responses of multiple terminals can be transmitted in parallel. , Corresponding time frequency resources are fully utilized.

Optionally, if the subchannel of the terminal is a plurality of unit channels (such as a channel having a unit of 20 MHz), the terminal may transmit an ACK response or a BA response on these plurality of unit channels by a dual transmission method. Alternatively, an ACK or BA response may be transmitted by a non-double transmission method.

In the data transmission indication method provided in this embodiment of the invention, the terminal receives the OFDMA physical layer signaling transmitted by the access point, and according to the OFDMA physical layer signaling, an ACK or BA response is sent to the access point. Determine the subchannel to be transmitted. That is, in the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling, the access point performs an indication to more terminals when the terminal sends an ACK response or a BA response to the access point. That is, the number of terminals on which the access point indicates a subchannel is not limited, so that the ACK or BA response of multiple terminals is transmitted to the access point in parallel and the corresponding time frequency resource is Fully used.

FIG. 17 is a schematic flowchart of the 20th embodiment of the data transmission indication method according to the present invention. A method according to this embodiment is the process by which an access point sends MU-MIMO data information carrying OFDMA physical layer signaling to a terminal to add an OFDMA ACK or OFDMA BA request to OFDMA physical layer signaling. The terminal responds with an ACK response or a BA response on the subchannel corresponding to the terminal in OFDMA mode. As shown in FIG. 17, the method includes:

S1701: The terminal receives the MU-MIMO data information transmitted by the access point, where the MU-MIMO data information carries OFDMA physical layer signaling.

In particular, the OFDMA physical layer signaling carried by the aforementioned MU-MIMO data information is used in the OFDMA mode to instruct the terminal to send an ACK or BA response to the access point, an OFDMA ACK request or OFDMA BA. It further comprises a request, i.e., the access point requires the terminal to respond with an ACK or BA response after acquiring the corresponding MU-MIMO data information. OFDMA physical layer signaling is used to indicate to the terminal the subchannels assigned to the terminal as well as the ACK or BA response being sent to the access point.

S1702: The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling.

References may be made to the description of Embodiment 14 to Embodiment 16 regarding the content included in OFDMA physical layer signaling in this embodiment of the present invention, and details will not be described here again in this embodiment of the present invention. Please note.

S1703: The terminal transmits an ACK response or a BA response to the access point on the corresponding subchannel in OFDMA mode.

In particular, after determining the subchannel in which the ACK or BA response is transmitted to the access point according to OFDMA physical layer signaling, the terminal transmits the ACK or BA response to the access point on the corresponding subchannel in OFDMA mode. .. That is, all terminals can simultaneously transmit an ACK or BA response to the access point on their corresponding subchannels, i.e., the ACK or BA responses of multiple terminals can be transmitted in parallel. In that case, the corresponding time frequency resources can be fully utilized.

In the data transmission indication method provided in this embodiment of the invention, the terminal carries OFDMA physical layer signaling, receives MU-MIMO data information transmitted by the access point, and follows OFDMA physical layer signaling. A terminal determines which subchannel it sends an ACK or BA response to an access point, thereby allowing multiple terminals to simultaneously transmit an ACK or BA response to an access point on the corresponding subchannel, ie. In the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling, the access point performs an indication to more terminals when the terminal sends an ACK response or a BA response to the access point. That is, the number of terminals on which the access point exhibits subchannels is not limited, and thus the ACK or BA response of multiple terminals is transmitted to the access point in parallel and the corresponding time frequency resources are sufficient. Used for.

FIG. 18 is a schematic flowchart of Embodiment 21 of the data transmission indication method according to the present invention. A method according to this embodiment is a process in which the access point transmits MU-MIMO data information carrying OFDMA physical layer signaling and an ACK request frame or BA request frame to the terminal, whereby the terminal is terminal in OFDMA mode. Respond by ACK or BA response on the corresponding subchannel. As shown in FIG. 18, the method includes:

S1801: The terminal receives the MU-MIMO data information transmitted by the access point, where the MU-MIMO data information carries OFDMA physical layer signaling.

In particular, OFDMA physical layer signaling is used to indicate to the terminal the subchannels assigned to the terminal as well as the ACK or BA response being transmitted to the access point.

S1802: The terminal receives the ACK request frame or BA request frame transmitted by the access point, where the ACK request frame or BA request frame includes a dedicated information bit, and the dedicated information bit is an ACK response or in OFDMA mode. Used to instruct the terminal to send a BA response to the access point.

In particular, the terminal receives an ACK or BA request frame transmitted by the access point, i.e., the access point receives the corresponding MU-MIMO data information by the ACK or BA response in OFDMA mode. It requires the terminal to respond to the access point, thereby learning whether the MU-MIMO data information has been successfully transmitted.

S1803: The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling.

References may be made to the description of Embodiment 14 to Embodiment 16 regarding the content included in OFDMA physical layer signaling in this embodiment of the present invention, and details will not be described here again in this embodiment of the present invention. Please note.

S1804: The terminal transmits an ACK response or a BA response to the access point on the corresponding subchannel in OFDMA mode.

In particular, after determining the subchannel in which the ACK or BA response is transmitted to the access point according to OFDMA physical layer signaling, the terminal transmits the ACK or BA response to the access point on the corresponding subchannel in OFDMA mode. .. That is, all terminals can simultaneously transmit an ACK or BA response to the access point on their corresponding subchannels, i.e., the ACK or BA responses of multiple terminals can be transmitted in parallel. In that case, the corresponding time frequency resources can be fully utilized.

In the data transmission indication method provided in this embodiment of the invention, the terminal carries OFDMA physical layer signaling, receives MU-MIMO data information transmitted by the access point, and follows OFDMA physical layer signaling. Determining which subchannel the ACK or BA response is transmitted to the access point allows multiple terminals to simultaneously transmit the ACK or BA response to the access point on the corresponding subchannel, ie. The method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling is that the access point performs an indication to more terminals when the terminal sends an ACK response or a BA response to the access point. That is, the number of terminals on which the access point indicates a subchannel is not limited, so that the ACK or BA response of multiple terminals is transmitted to the access point in parallel and the corresponding time frequency resources are sufficient. used.

FIG. 19 is a schematic flowchart of a 22nd embodiment of the data transmission indication method according to the present invention. A method according to this embodiment is the process by which the access point sends an ACK or BA request frame carrying OFDMA physical layer signaling to the terminal so that the terminal is on the subchannel corresponding to the terminal in OFDMA mode. Respond by ACK response or BA response. As shown in FIG. 19, the method includes:

S1901: The terminal receives the MU-MIMO data information transmitted by the access point.

S1902: The terminal receives the ACK request frame or BA request frame transmitted by the access point, where the ACK request frame or BA request frame includes a dedicated information bit, and the dedicated information bit is an ACK response or in OFDMA mode. It is used to instruct the terminal to send a BA response to the access point, and the ACK or BA request frame carries the OFDMA physical layer signaling.

In particular, the ACK request frame or BA request frame transmitted by the access point to the terminal indicates that the access point responds to the access point by an ACK response or a BA response after the terminal acquires the corresponding MU-MIMO data information. It has the purpose of requesting the terminal and thereby learning whether the MU-MIMO data information has been successfully transmitted. OFDMA physical layer signaling carried in an ACK or BA request frame is used to send an ACK or BA response to the access point and to indicate to the terminal the subchannels allocated to the terminal.

S1903: The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling.

References may be made to the description of Embodiment 14 to Embodiment 16 regarding the content included in OFDMA physical layer signaling in this embodiment of the present invention, and details will not be described here again in this embodiment of the present invention. Please note.

S1904: The terminal transmits an ACK response or a BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

In particular, after determining the subchannel in which the ACK or BA response is transmitted to the access point according to OFDMA physical layer signaling, the terminal transmits the ACK or BA response to the access point on the corresponding subchannel in OFDMA mode. .. That is, all terminals can simultaneously transmit an ACK or BA response to the access point on their corresponding subchannels, i.e., the ACK or BA responses of multiple terminals can be transmitted in parallel. In that case, the corresponding time frequency resources can be fully utilized.

In the data transmission indication method provided in this embodiment of the invention, the terminal carries an OFDMA physical layer signaling, receives an ACK or BA request frame transmitted by the access point, and has an OFDMA physical layer signaling. According to, the subchannel in which the ACK or BA response is transmitted to the access point is determined, whereby multiple terminals can simultaneously transmit the ACK or BA response to the access point on the corresponding subchannel. That is, in the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling, the access point executes an indication to more terminals when the terminal sends an ACK response or a BA response to the access point. That is, the number of terminals on which the access point exhibits subchannels is not limited, and thus the ACK or BA response of multiple terminals is transmitted to the access point in parallel and the corresponding time frequency resource is Fully used.

FIG. 20 is a schematic flowchart of the 23rd embodiment of the data transmission indication method according to the present invention. A method according to this embodiment is the process by which the access point sends an OFDMA physical layer signaling to the terminal carrying an OFDMA ACK request or an OFDMA BA request so that the terminal is on the subchannel corresponding to the terminal in OFDMA mode. Respond by ACK response or BA response. As shown in FIG. 20, the method includes:

S20011: The terminal receives the OFDMA physical layer signaling transmitted by the access point.

In particular, MIMO physical layer signaling is used to carry an OFDMA ACK or OFDMA BA request, and an OFDMA ACK or OFDMA BA request is used to instruct a terminal to send an ACK or BA response to an access point in OFDMA mode. That is, the access point requires the terminal to respond to the access point with an ACK or BA response after the terminal has acquired the corresponding OFDMA + MU-MIMO data information, whereby the subsequent OFDMA + MU-MIMO data information is generated. Learn if it was transmitted successfully. OFDMA physical layer signaling is used to indicate to the terminal the corresponding subchannel assigned to the terminal as well as the ACK or BA response being sent to the access point.

S2002: The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling.

It should be noted that the OFDMA physical layer signaling in this embodiment of the present invention may be referred to from embodiment 14 to the description in embodiment 16, and the details in this embodiment of the invention will not be described again here.

S2003: The terminal receives OFDMA + MU-MIMO data information transmitted by the access point on the corresponding subchannel.

As appropriate, OFDMA + MU-MIMO data information may or may not carry OFDMA physical layer signaling.

S2004: The terminal transmits an ACK response or a BA response to the access point on the corresponding subchannel in OFDMA mode.

In particular, after determining the subchannel in which the ACK or BA response is transmitted to the access point according to OFDMA physical layer signaling, the terminal sends the ACK or BA response to the access point on the corresponding subchannel in OFDMA + MU-MIMO mode. Send. That is, all terminals can simultaneously transmit an ACK or BA response to the access point on their corresponding subchannels, i.e., the ACK or BA responses of multiple terminals can be transmitted in parallel. In that case, the corresponding time frequency resources can be fully utilized.

In the data transmission indication method provided in this embodiment of the invention, the terminal receives the OFDMA physical layer signaling transmitted by the access point, and according to the OFDMA physical layer signaling, an ACK or BA response is sent to the access point. Determining which subchannel to be transmitted allows multiple terminals to simultaneously transmit an ACK or BA response to the access point on the corresponding subchannel, i.e., each access point follows OFDMA physical layer signaling. The method of allocating subchannels to terminals allows the access point to perform indications to more terminals when the terminal sends an ACK or BA response to the access point, i.e. The number of terminals exhibiting subchannels is not limited, so the ACK or BA response of multiple terminals is transmitted to the access point in parallel and the corresponding time frequency resources are fully used.

FIG. 21 is a schematic flowchart of the 24th embodiment of the data transmission indication method according to the present invention. A method according to this embodiment is the process by which the access point transmits OFDMA physical layer signaling and ACK or BA request frames to the terminal, whereby the terminal is placed on the subchannel corresponding to the terminal in OFDMA mode. Respond by ACK response or BA response. As shown in FIG. 21, the method includes:

S2101: The terminal receives the OFDMA physical layer signaling transmitted by the access point.

In particular, OFDMA physical layer signaling is used to indicate to the terminal the corresponding subchannel assigned to the terminal as well as the ACK or BA response being transmitted to the access point.

S2102: The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling.

It should be noted that the OFDMA physical layer signaling in this embodiment of the present invention may be referred to from embodiment 14 to the description in embodiment 16, and the details in this embodiment of the invention will not be described again here.

S2103: The terminal receives OFDMA + MU-MIMO data information transmitted by the access point on the corresponding subchannel.

As appropriate, OFDMA + MU-MIMO data information may or may not carry OFDMA physical layer signaling.

S2104: The access point transmits an ACK request frame or a BA request frame to the terminal, where the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit sends an ACK response or a BA response in OFDMA mode. Used to instruct the terminal to send to the access point.

In particular, that is, the access point requests the terminal to respond to the access point with an ACK or BA response after the terminal has acquired the corresponding MU-MIMO data information by using an ACK or BA request frame. It then learns whether the subsequent OFDMA + MU-MIMO data information has been successfully transmitted.

As appropriate, the ACK or BA request frame may or may not carry OFDMA physical layer signaling. Further, as appropriate, when the aforementioned OFDMA + MU-MIMO data information carries OFDMA physical layer signaling, the ACK request frame or BA request frame may not carry the OFDMA physical layer signaling, or the aforementioned OFDMA + MU-MIMO data information carries OFDMA. When not carrying physical layer signaling, the ACK or BA request frame may carry OFDMA physical layer signaling.

S2105: The terminal transmits an ACK response or a BA response to the access point on the corresponding subchannel in OFDMA mode.

In particular, after determining the subchannel in which the ACK or BA response is transmitted to the access point according to OFDMA physical layer signaling, the terminal responds in OFDMA + MU-MIMO mode according to the dedicated information bits in the ACK request frame or BA request frame. Determines to send an ACK or BA response to the access point on the subchannel. That is, all terminals can simultaneously transmit an ACK or BA response to the access point on their corresponding subchannels, i.e., the ACK or BA responses of multiple terminals can be transmitted in parallel. In that case, the corresponding time frequency resources can be fully utilized.

In the data transmission indication method provided in this embodiment of the invention, the terminal receives the OFDMA physical layer signaling transmitted by the access point, and according to the OFDMA physical layer signaling, an ACK or BA response is sent to the access point. Determining which subchannel to be transmitted allows multiple terminals to simultaneously transmit an ACK or BA response to the access point on the corresponding subchannel, i.e., each access point follows OFDMA physical layer signaling. The method of allocating subchannels to terminals allows the access point to perform indications to more terminals when the terminal sends an ACK or BA response to the access point, i.e. The number of terminals exhibiting subchannels is not limited, so the ACK or BA response of multiple terminals is transmitted to the access point in parallel and the corresponding time frequency resources are fully used.

FIG. 22 is a schematic flowchart of the 25th embodiment of the data transmission indication method according to the present invention. The method of this embodiment involves a process of transmitting uplink OFDMA data information initiated by a terminal. This method specifically involves the following steps:

S2201: The terminal transmits an uplink transmission frame to the access point.

In particular, the method according to this embodiment is the aforementioned process of transmitting uplink OFDMA data information initiated by STA, where the uplink transmission frame carries an OFDMA data transmission request.

The terminal may transmit the uplink transmission frame in the OFDM mode, and here, the uplink transmission frame may be of any kind in particular. The terminal can add an OFDMA data transmission request to the uplink transmission frame, where the OFDMA data transmission request is used to require the access point to complete subsequent data transmission in OFDMA mode. ..

After receiving the terminal's uplink transmission frame, whether the access point switches the terminal to OFDMA mode to perform transmission, depending on the terminal's OFDMA data transmission request or current network conditions, eg, another at the access point. Determine if there is a request from the terminal. If the access point determines that the terminal needs to be switched to OFDMA mode, the access point either uses OFDMA mode in subsequent data transmissions, or the access point's determination results indicate that the terminal switches to OFDMA mode. If the result is not possible, the access point continues to perform data transmission in OFDM mode.

S2202: The terminal receives the OFDMA physical layer signaling transmitted by the access point.

In particular, when the access point determines that the terminal needs to be switched to OFDMA mode according to an OFDMA data transmission request or current network conditions and performs data transmission in OFDMA mode, the access point performs OFDMA physical layer signaling. Transmit to the terminal, where OFDMA physical layer signaling is used to instruct the terminal to transmit uplink OFDMA data information on each corresponding subchannel.

The OFDMA physical layer signaling can be carried in the OFDM preamble or the NDPA frame in the above-described embodiment, or the NDPA frame and the OFDM preamble can cooperate with each other to carry the OFDMA physical layer signaling. Please note. References may be made to the aforementioned embodiments for a particular process, details of which are not described again here.

Optionally, after S2202, the access point may further transmit the terminal downlink OFDMA data information on each subchannel corresponding to the terminal described above. References may be made to the aforementioned embodiments of the downlink OFDMA data transmission process, the details of which are not described again herein.

S2203: The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling.

In particular, the terminal learns the subchannel in which the terminal transmits uplink OFDMA data information to the access point by using the subchannels indicated by OFDMA physical layer signaling, i.e., the access point additionally uplink OFDMA. Signaling indications that occur when instructing the terminal to transmit data information are avoided and system efficiency is improved.

S2204: The terminal transmits uplink OFDMA data information to the access point on the corresponding subchannel in OFDMA mode.

After determining which subchannel the uplink OFDMA data information is transmitted to the access point according to OFDMA physical layer signaling, the terminal transmits the uplink OFDMA data information to the access point on that subchannel.

As appropriate, after S2202, if the access point further transmits downlink OFDMA data information to the terminal, the terminal receives and is pinned to the downlink OFDMA data information transmitted by the access point on the corresponding subchannel. After waiting for a length of time, the terminal transmits the uplink OFDMA data information associated with the terminal over the subchannel.

In the data transmission indication method provided in this embodiment of the invention, the terminal transmits an uplink transmission frame to the access point, whereby the access point uses OFDMA physical layer signaling to make each terminal. On the other hand, it indicates a subchannel to which uplink OFDMA data information is transmitted, and thus each terminal may transmit data to the access point on the corresponding subchannel. That is, the subchannels are allocated to the terminals in such a way that the access points transmit OFDMA physical layer signaling, so that when uplink OFDMA data information is transmitted to the access points, the access points have more terminals. The signaling indication that occurs when the access point additionally instructs the terminal to transmit uplink OFDMA data information can be performed, and the system efficiency is improved.

Further, a method according to this embodiment is the terminal after transmitting the uplink OFDMA data information to the access point in the above-mentioned scenario shown in FIG. 22 in which the terminal transmits the uplink OFDMA data information to the access point. Is directed to the process of receiving an ACK or BA response sent by an access point on the corresponding subchannel. Further, after S2204, the method further comprises:

S2205: The terminal corresponds to the uplink OFDMA data information on the corresponding subchannel and receives the ACK response or BA response transmitted by the access point.

In particular, the terminal transmits uplink OFDMA data information to the access point on the subchannel corresponding to the terminal, where the uplink OFDMA data information carries an OFDMA ACK request or an OFDMA BA request and is an OFDMA ACK request or OFDMA. The BA request is used to instruct the access point to send an ACK or BA response to the terminal in OFDMA mode, i.e. to feed the access point the transmission status of uplink OFDMA data information to the terminal. ..

The access point is the entity that transmits the OFDMA physical layer signaling, so that the access point sends an ACK or BA response of the uplink OFDMA data information associated with the terminal directly to the terminal on the corresponding subchannel. It can be transmitted, whereby the terminal learns whether the uplink OFDMA data has been successfully transmitted.

In the data transmission indication method provided in this embodiment of the invention, the ACK or BA request is carried in the uplink OFDMA data information transmitted by the terminal to the access point, whereby the access point corresponds. An ACK response or BA response corresponding to the uplink OFDMA data information can be transmitted to the terminal on the subchannel. That is, in the method in which the access point allocates a subchannel to each terminal according to OFDMA physical layer signaling, the access point performs an indication to more terminals when the terminal transmits uplink OFDMA data to the access point. That is, the number of terminals on which the access point exhibits subchannels is not limited, and thus the terminals have successfully transmitted uplink OFDMA data according to the ACK or BA response sent by the access point. You can learn how.

FIG. 23 is a schematic flowchart of the 26th embodiment of the data transmission indication method according to the present invention. The method of this embodiment involves a process of transmitting uplink OFDMA data information initiated by an access point. This method specifically involves the following steps:

S2301: The terminal receives the OFDMA physical layer signaling transmitted by the access point.

In particular, the OFDMA physical layer signaling can be carried in the OFDM preamble or in the NDPA frame in the aforementioned embodiment, or the NDPA frame and the OFDM preamble cooperate with each other to carry the OFDMA physical layer signaling. obtain. References may be made to the aforementioned embodiments for a particular process, details of which are not described again here.

OFDMA physical layer signaling is specifically used to correspond to a terminal, to transmit uplink OFDMA data information to the access point and to indicate to the terminal the subchannels assigned to the terminal. Optionally, in all embodiments of the invention, OFDMA physical layer signaling is used for subchannel allocation for uplinks, for downlinks only, or for both uplinks and downlinks. It may contain information bits used to indicate to the terminal what is to be done. In this embodiment, the information bits in OFDMA physical layer signaling indicate to the terminal that the subchannel is the subchannel used for uplink transmission. If the access point acquires channel usage rights, the terminal is instructed to send uplink OFDMA data information to the access point on the corresponding subchannel by using the delivered OFDMA physical layer signaling. To.

S2302: The terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling.

In particular, the terminal learns the subchannel in which the terminal transmits uplink OFDMA data information to the access point by using the subchannels indicated by OFDMA physical layer signaling, i.e., the access point additionally uplink OFDMA. Signaling indications that occur when instructing the terminal to transmit data information are avoided and system efficiency is improved.

S2303: The terminal transmits uplink OFDMA data information to the access point on the corresponding subchannel in OFDMA mode.

In particular, after determining the subchannel in which the uplink OFDMA data information is transmitted to the access point according to OFDMA physical layer signaling, the terminal transmits the uplink OFDMA data information to the access point on that subchannel.

In the data transmission indication method provided in this embodiment of the invention, the access point uses OFDMA physical layer signaling to indicate to the terminal a subchannel to which uplink OFDMA data is transmitted. This allows each terminal to transmit data to the access point on the corresponding subchannel. That is, subchannels are allocated to each terminal in such a way that the access point transmits OFDMA physical layer signaling, so that when the terminal transmits uplink OFDMA data to the access point, the access point has more. Indications to terminals can be performed, i.e., the number of terminals to which the access point points to a subchannel is not limited.

Those skilled in the art will appreciate that all or part of the steps of the embodiments of the aforementioned methods can be performed by a program that directs the relevant hardware. The aforementioned program can be stored on a computer-readable storage medium. When the program is executed, the steps described above included in the embodiment of the method are performed. The storage medium described above may be any medium capable of storing the program code, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Embodiment 1 of the access point of the present invention provides an access point, the access point comprising a transmission module 10 configured to transmit orthogonal frequency split multiple connection OFDMA physical layer signaling to a terminal, wherein the OFDMA. Physical layer signaling is used to indicate to the terminal the subchannels assigned to the terminal, thereby allowing the terminal to determine the subchannel corresponding to the terminal according to OFDMA physical layer signaling, where OFDMA physical layer signaling. Includes the terminal identifier and the subchannel information corresponding to the terminal identifier.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

As appropriate, the terminal identifier is an identifier for one or more terminal groups, each terminal group includes at least one terminal, and the subchannel information includes uplink subchannels or downlink subchannels or uplinks and downlinks. The OFDMA physical layer signaling that includes a link bidirectional subchannel and is used to indicate to the terminal the subchannel allocated to the terminal, in which the allocated subchannel is uplinked to each terminal group. Includes OFDMA physical layer signaling used to indicate that it is a subchannel or downlink subchannel or uplink and downlink bidirectional subchannel, where the terminal groups and subchannels have a one-to-one correspondence. Yes, in that case, the transmit module 10 transmits the mapping relationship between the terminal group identifier and the terminal address to the terminal before the OFDMA physical layer signaling is transmitted to the terminal, whereby the terminal is placed. It is further configured so that the terminal learns the terminal group being used.

As appropriate, the terminal identifier is the identifier of one terminal group, the terminal group includes at least two terminals, in which case OFDMA physical layer signaling is assigned to each terminal in the terminal group. Is used to indicate that is an uplink subchannel or a downlink subchannel or an uplink and downlink bidirectional subchannel, where each terminal and subchannel in the terminal group has a one-to-one correspondence. ..

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

As appropriate, the transmission module 10 is specifically configured to transmit orthogonal frequency division multiplexing OFDM preambles to terminals, where the OFDM preambles carry OFDMA physical layer signaling.

As appropriate, the transmission module 10 is further configured to transmit null data packet announcement NDPA frames to the terminal, where the NDPA frames carry the above-mentioned OFDMA physical layer signaling.

As appropriate, the transmit module 10 transmits an NDPA frame and an OFDM preamble to the terminal, where the NDPA frame carries the terminal identifier in the above-mentioned OFDMA physical layer signaling, and the OFDM preamble corresponds to the terminal identifier. , Further configured to carry subchannel information within the above-mentioned OFDMA physical layer signaling.

As appropriate, the transmit module 10 transmits an NDPA frame and an OFDM preamble to the terminal, where the NDPA frame corresponds to the terminal's identifier and carries the subchannel information within the OFDMA physical layer signaling described above, and OFDM. The preamble is further configured to carry the identifier of the terminal in the above-mentioned OFDMA physical layer signaling.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

FIG. 24 is a schematic structural diagram of the second embodiment of the access point according to the present invention. Further, based on Embodiment 1 of the device described above, OFDMA physical layer signaling is specifically used to indicate to the terminal the subchannels allocated to the terminal to receive downlink OFDMA data information, in which case transmission. Module 10 transmits downlink OFDMA data information on the subchannel corresponding to the terminal in OFDMA mode after the orthogonal frequency division multiplex connection OFDMA physical layer signaling is transmitted to the terminal, where the downlink OFDMA data information is , OFDMA preamble and OFDMA data, and the OFDMA preamble is further configured to include a switching field and an ultra-high throughput signaling B UHT-SIG-B.

In addition, OFDMA physical layer signaling or downlink OFDMA data information carries an OFDMA acknowledgment ACK request or OFDMA block acknowledgment BA request, and an OFDMA ACK request or OFDMA BA request sends an ACK response or BA response to an access point in OFDMA mode. Used to instruct the terminal to transmit, in which case OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is transmitted to the access point and a sub-allocated to the terminal. Further used to indicate a channel.

In that case, with reference to FIG. 24, based on embodiment 1 of the device described above, the access point, after the transmission module 10 transmits downlink OFDMA data information on the subchannel corresponding to the terminal in OFDMA mode, is OFDMA. It further comprises a receiving module 11 configured to receive an ACK or BA response transmitted by the terminal on the subchannel corresponding to the terminal in mode.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

With reference to FIG. 24, based on the embodiment shown in FIG. 24, OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is sent to and allocated to the terminal. Used to indicate a subchannel, in which case the transmit module 10 transmits an ACK request frame or a BA request frame to the terminal after the downlink OFDMA data information has been transmitted on the subchannel corresponding to the terminal. The receiving module 11 is further configured to receive an ACK or BA response transmitted by a terminal on the corresponding subchannel in OFDMA mode.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

With reference to FIG. 24, based on the embodiment shown in FIG. 24, OFDMA physical layer signaling carries an OFDMA ACK or OFDMA BA request, and the OFDMA ACK or OFDMA BA request is an ACK response or in OFDMA mode. Used to instruct the terminal to send a BA response to the access point, in which case OFDMA physical layer signaling corresponds to the terminal and the ACK or BA response is sent to the access point and to the terminal. It is specifically used to indicate to the terminal the subchannels allocated to it, in which case the transmit module 10 transmits MU-MIMO data information to the terminal in multi-user multi-input multi-output MU-MIMO mode, where. The MU-MIMO data information is specifically configured to carry OFDMA physical layer signaling, the receiving module 11 responding in OFDMA mode after the transmitting module 10 has transmitted the orthogonal frequency split multiple connection OFDMA physical layer signaling to the terminal. It is further configured to receive the ACK or BA response sent by the terminal on the subchannel.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

With reference to FIG. 24, based on the embodiment shown in FIG. 24, OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is sent to the access point and allocated to the terminal. It is specifically used to indicate a subchannel to the terminal, in which case the transmit module 10 transmits MU-MIMO data information to the terminal in MU-MIMO mode, where the MU-MIMO data information is OFDMA physical layer signaling. And sends an ACK or BA request frame to the terminal, where the ACK or BA request frame contains a dedicated information bit, which in OFDMA mode accesses the ACK or BA response. The receiving module 11 is specifically configured to be used to instruct the terminal to transmit to the terminal in OFDMA mode after the transmitting module 10 has transmitted orthogonal frequency split multiple connection OFDMA physical layer signaling to the terminal. It is further configured to receive an ACK or BA response sent by the terminal on the corresponding subchannel.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

With reference to FIG. 24, based on the embodiment shown in FIG. 24, OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is sent to and allocated to the terminal. It is particularly used to indicate the subchannel to the terminal, in which case the transmit module 10 transmits MU-MIMO data information to the terminal in MU-MIMO mode and transmits an ACK request frame or BA request frame to the terminal. However, here, the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit is used in the OFDMA mode to instruct the terminal to send an ACK response or a BA response to the access point. The request frame or BA request frame is specifically configured to carry OFDMA physical layer signaling, the receiving module 11 responding in OFDMA mode after the transmit module 10 transmits the orthogonal frequency split multiple connection OFDMA physical layer signaling to the terminal. It is further configured to receive an ACK or BA response sent by the terminal on the subchannel.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

With reference to FIG. 24, based on the embodiment shown in FIG. 24, OFDMA physical layer signaling carries an OFDMA ACK or OFDMA BA request, and the OFDMA ACK or OFDMA BA request is an ACK response or in OFDMA mode. Used to instruct the terminal to send a BA response to the access point, in which case OFDMA physical layer signaling corresponds to the terminal and the ACK or BA response is sent to the access point and to the terminal. It is specifically used to indicate to the terminal the subchannels allocated to it, in which case the transmit module 10 is used to the terminal in OFDMA + MU-MIMO mode after the orthogonal frequency split multiple connection OFDMA physical layer signaling has been transmitted to the terminal. The OFDMA + MU-MIMO data information is transmitted to the terminal on the corresponding subchannel, and the receiving module 11 is further configured to receive the ACK response or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode. ..

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

With reference to FIG. 24, based on the embodiment shown in FIG. 24, OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is sent to and allocated to the terminal. The subchannel is particularly used to indicate to the terminal the subchannel, in which case the transmit module 10 corresponds to the terminal in OFDMA + MU-MIMO mode after the orthogonal frequency split multiple connection OFDMA physical layer signaling has been transmitted to the terminal. Above, OFDMA + MU-MIMO data information is transmitted to the terminal, and an ACK request frame or BA request frame is transmitted to the terminal. Here, the ACK request frame or BA request frame includes a dedicated information bit, and the dedicated information bit is OFDMA. Further configured to instruct the terminal to send an ACK or BA response to the access point in mode, the receive module 11 was transmitted by the terminal on the corresponding subchannel in OFDMA mode. Further configured to receive an ACK or BA response.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

With reference to FIG. 24, based on the embodiment shown in FIG. 24, OFDMA physical layer signaling corresponds to the terminal, uplink OFDMA data information is transmitted to the access point and allocated to the terminal. It is specifically used to indicate a subchannel to the terminal, in which case the receiving module 11 is an uplink transmitted by the terminal before the transmitting module 10 transmits orthogonal frequency split multiple connection OFDMA physical layer signaling to the terminal. To receive the uplink OFDMA data information transmitted by the terminal on the corresponding subchannel in OFDMA mode after receiving the transmission frame and transmitting the orthogonal frequency split multiplex OFDMA physical layer signaling to the terminal. Further configured.

In addition, the uplink OFDMA data information carries an OFDMA ACK or OFDMA BA request, and the OFDMA ACK or OFDMA BA request directs the access point to send an ACK or BA response to the terminal in OFDMA mode. Further used, in which case the transmitting module 10 is up on the subchannel corresponding to the terminal in OFDMA mode after receiving the uplink OFDMA data information transmitted by the terminal on the subchannel corresponding to the receiving module 11. It is further configured to transmit an ACK or BA response corresponding to the link OFDMA data information.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

With reference to FIG. 24, based on the embodiment shown in FIG. 24, OFDMA physical layer signaling corresponds to the terminal, uplink OFDMA data information is transmitted to the access point and allocated to the terminal. It is specifically used to indicate a subchannel to the terminal, in which case the receiving module 11 is on the corresponding subchannel in OFDMA mode after the transmitting module 10 has transmitted orthogonal frequency split multiple connection OFDMA physical layer signaling to the terminal. It is further configured to receive the uplink OFDMA data information transmitted by the terminal at.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

FIG. 25 is a schematic structural diagram of the first embodiment of the terminal according to the present invention. As shown in FIG. 25, the terminal includes a receiving module 20 and a determination module 21.

The receiving module 20 receives the orthogonal frequency division multiple access OFDMA physical layer signaling transmitted by the access point, where the OFDMA physical layer signaling indicates to the terminal the subchannels allocated by the access point to the terminal. Used in, where OFDMA physical layer signaling is configured to include a terminal identifier and subchannel information corresponding to the terminal identifier.

The determination module 21 is configured to determine the subchannel corresponding to the terminal according to OFDMA physical layer signaling.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

As appropriate, the terminal identifier is an identifier for one or more terminal groups, each terminal group includes at least one terminal, and the subchannel information includes uplink subchannels or downlink subchannels or uplinks and downlinks. The OFDMA physical layer signaling that includes a link bidirectional subchannel and is used to indicate to the terminal the subchannel allocated to the terminal, in which the allocated subchannel is uplinked to each terminal group. Includes OFDMA physical layer signaling used to indicate that it is a subchannel or downlink subchannel or uplink and downlink bidirectional subchannel, where terminal groups and subchannels have a one-to-one correspondence. Yes, in that case, the receiving module 20 receives the mapping relationship between the terminal group identifier and the terminal address before receiving the orthogonal frequency split multiplex OFDMA physical layer signaling transmitted by the access point. Here, the mapping relationship is further configured to be transmitted by the access point, in which case the determination module 21 determines that the terminals are located in the terminal group according to the mapping relationship, in which case. In particular, the subchannel corresponding to the terminal group is specifically configured to determine that it is the subchannel corresponding to the terminal.

As appropriate, the terminal identifier is an identifier for one terminal group, which includes at least two terminals and is used to indicate to the terminals the subchannels assigned to the terminals. OFDMA physical layer signaling is used to indicate to each terminal in a terminal group that the assigned subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. It includes OFDMA physical layer signaling, where terminals and subchannels within a terminal group have a one-to-one correspondence.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

Based on the embodiment shown in FIG. 25, further, the receiving module 20 receives the orthogonal frequency division multiplexing OFDM preamble transmitted by the access point, where the OFDM preamble carries OFDMA physical layer signaling. Especially configured as.

As appropriate, the receiving module 20 is further configured to receive null data packet announcement NDPA frames transmitted by the access point, where the NDPA frames carry OFDMA physical layer signaling.

As appropriate, the receiving module 20 receives the NDPA frame and OFDM preamble transmitted by the access point, where the NDPA frame carries the identifier of the terminal in OFDMA physical layer signaling, and the OFDM preamble corresponds to the identifier of the terminal. And is further configured to carry subchannel information within OFDMA physical layer signaling.

As appropriate, the receiving module 20 receives the NDPA frame and OFDM preamble transmitted by the access point, where the NDPA frame corresponds to the identifier of the terminal and the subchannel information in the OFDMA physical layer signaling described above. Carry, and the OFDM preamble is further configured to carry the terminal identifier in the OFDMA physical layer signaling described above.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

FIG. 26 is a schematic structural diagram of a second embodiment of the terminal according to the present invention. Based on the embodiments shown in FIG. 25, further OFDMA physical layer signaling is specifically used to indicate to the terminal the subchannels allocated to the terminal by the access point to receive downlink OFDMA data information. In that case, the receiving module 20 determines the downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal after the determination module 21 determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling. Received, where the downlink OFDMA data information includes OFDMA preambles and OFDMA data, the OFDMA preambles are further configured to include switching fields and ultra-high throughput signaling B UHT-SIG-B.

In that case, based on the embodiment shown in FIG. 25, the receiving module 20 further corresponds to the OFDMA data and is configured to receive the destination terminal address transmitted by the access point. 201 determines whether the terminal matches the destination terminal address, and if so, receives the downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal. It includes a determination unit 202 configured to instruct unit 201.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

FIG. 27 is a schematic structural diagram of a third embodiment of the terminal according to the present invention. The OFDMA physical layer signaling or the above-mentioned downlink OFDMA data information carries an OFDMA ACK request or an OFDMA BA request, and the OFDMA ACK request or OFDMA BA request sends an ACK response or BA response to the access point in OFDMA mode. Used to direct the terminal, in which case the aforementioned OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is sent to the access point and a subchannel allocated to the terminal. Further used to indicate. In that case, based on the embodiment shown in FIG. 26, further, in the terminal described above, the receiving module 20 receives the downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal. A transmission module 22 configured to transmit an ACK response or a BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode is further provided.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

With reference to FIG. 27, the above-mentioned OFDMA physical layer signaling corresponds to the terminal, and an ACK response or BA response is sent to the access point and is further used to indicate the subchannel allocated to the terminal. In that case, the receiving module 20 receives the ACK request frame or BA request frame transmitted by the access point after the downlink OFDMA data information transmitted by the access point is received on the subchannel corresponding to the terminal. However, here, the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit is used to instruct the terminal to send an ACK response or a BA response to the access point in OFDMA mode. The transmission module 22 is further configured to transmit an ACK response or a BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

With reference to FIG. 27, OFDMA physical layer signaling carries an OFDMA ACK or OFDMA BA request, and the OFDMA ACK or OFDMA BA request sends an ACK or BA response to the access point in OFDMA mode. Used to direct, in which case OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is sent to the access point and to indicate to the terminal the subchannels assigned to the terminal. In this case, the receiving module 20 is specifically configured to receive multi-user multi-input multi-output MU-MIMO data information transmitted by the access point, and the transmitting module 22 is such that the determination module 21 is OFDMA. After determining the subchannel corresponding to the terminal according to the physical layer signaling, it is further configured to transmit an ACK response or a BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

With reference to FIG. 27, OFDMA physical layer signaling is specifically used to correspond to the terminal and to indicate to the terminal the subchannel assigned to the terminal as well as the ACK or BA response being sent to the access point. In that case, the receiving module 20 receives the MU-MIMO data information transmitted by the access point, where the MU-MIMO data information carries the above-mentioned OFDMA physical layer signaling and the ACK transmitted by the access point. A request frame or BA request frame is received, where the ACK request frame or BA request frame includes a dedicated information bit, which causes the terminal to transmit an ACK or BA response to the access point in OFDMA mode. Specially configured to be used to indicate, the transmit module 22 is configured on the terminal-corresponding subchannel in OFDMA mode after the determination module 21 determines the terminal-corresponding subchannel according to OFDMA physical layer signaling. It is further configured to send an ACK or BA response to the access point.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

With reference to FIG. 27, OFDMA physical layer signaling is specifically used to correspond to the terminal and to indicate to the terminal the subchannel assigned to the terminal as well as the ACK or BA response being sent to the access point. In that case, the receiving module 20 receives the MU-MIMO data information transmitted by the access point and also receives the ACK request frame or BA request frame transmitted by the access point, where the ACK request frame or The BA request frame contains a dedicated information bit, the dedicated information bit is used in the OFDMA mode to instruct the terminal to send an ACK or BA response to the access point, and the ACK or BA request frame is an OFDMA. Specially configured to carry physical layer signaling, the transmit module 22 is an access point on the terminal corresponding subchannel in OFDMA mode after the determination module 21 determines the terminal corresponding subchannel according to OFDMA physical layer signaling. Further configured to send an ACK or BA response to.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

With reference to FIG. 27, OFDMA physical layer signaling carries an OFDMA ACK or OFDMA BA request, and the OFDMA ACK or OFDMA BA request sends an ACK or BA response to the access point in OFDMA mode. Used to direct, in which case OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is sent to the access point and to indicate to the terminal the subchannels assigned to the terminal. In this case, the receiving module 20 determines the OFDMA + MU transmitted by the access point on the subchannel corresponding to the terminal after the determination module 21 determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling. -It is further configured to receive MIMO data information, and the transmission module 22 is further configured to transmit an ACK or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

With reference to FIG. 27, OFDMA physical layer signaling is specifically used to correspond to the terminal and to indicate to the terminal the subchannels assigned to the terminal as well as the ACK or BA response being sent to the access point. In that case, the receiving module 20 determines the OFDMA + MU-MIMO data information transmitted by the access point on the subchannel corresponding to the terminal after the determination module 21 determines the subchannel corresponding to the terminal according to the OFDMA physical layer signaling. And receives the ACK request frame or BA request frame transmitted by the access point, where the ACK request frame or BA request frame contains a dedicated information bit and the dedicated information bit is an ACK response or in OFDMA mode. Further configured to be used to instruct the terminal to send a BA response to the access point, the transmit module 22 ACK or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode. Is further configured to send.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

With reference to FIG. 27, OFDMA physical layer signaling is specifically used to indicate to the terminal the subchannels allocated to the terminal as well as the uplink OFDMA data information being transmitted to the access point, in which case. The transmit module 22 is further configured to transmit an uplink transmission frame to the access point before the receive module 20 receives the orthogonal frequency split multiple connection OFDMA physical layer signaling transmitted by the access point, with the determination module 21 After determining the subchannel corresponding to the terminal according to OFDMA physical layer signaling, it is further configured to transmit uplink OFDMA data information to the access point on the subchannel corresponding to the terminal in OFDMA mode.

In addition, the uplink OFDMA data information carries an OFDMA ACK or OFDMA BA request, and the OFDMA ACK or OFDMA BA request instructs the access point to send an ACK or BA response to the terminal in OFDMA mode. Further used, in which case the receiving module 20 responds to and accesses the uplink OFDMA data information on the subchannel corresponding to the terminal after the transmitting module 22 transmits the uplink OFDMA data information to the access point. It is further configured to receive an ACK or BA response sent by the point.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

With reference to FIG. 27, OFDMA physical layer signaling is specifically used to correspond to the terminal and to transmit uplink OFDMA data information to the access point and to indicate to the terminal the subchannels assigned to the terminal. In that case, the transmission module 22 transfers the uplink OFDMA data information to the access point on the subchannel corresponding to the terminal in the OFDMA mode after the determination module 21 determines the subchannel corresponding to the terminal according to the OFDMA physical layer signaling. Further configured to send.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

Embodiment 3 of the access point of the present invention provides an access point, wherein the access point is a transmitter 30 configured to transmit orthogonal frequency division multiplex connection OFDMA physical layer signaling to a terminal. OFDMA physical layer signaling is used to indicate to the terminal the subchannels assigned to the terminal, whereby the terminal determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling, where the OFDMA physical layer The signaling includes a transmitter 30, which includes a terminal identifier and subchannel information corresponding to the terminal identifier.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

As appropriate, the terminal identifier is an identifier for one or more terminal groups, each terminal group includes at least one terminal, and the subchannel information includes uplink subchannels or downlink subchannels or uplinks and downlinks. The OFDMA physical layer signaling that includes a link bidirectional subchannel, in which case the subchannel allocated to the terminal is indicated to the terminal, is such that the allocated subchannel is uplinked to each terminal group. Includes OFDMA physical layer signaling used to indicate subchannel or downlink subchannel or uplink and downlink bidirectional subchannel, where terminal groups and subchannels have a one-to-one correspondence. is there.

The transmitter 30 transmits the mapping relationship between the terminal group identifier and the terminal address to the terminal before the OFDMA physical layer signaling is transmitted to the terminal, thereby causing the terminal group in which the terminal is located. It may be further configured such that the terminal learns.

As appropriate, the terminal identifier is an identifier for one terminal group, which includes at least two terminals and is used to indicate to the terminals the subchannels assigned to the terminals. OFDMA physical layer signaling is used to indicate to each terminal in a terminal group that the assigned subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. It includes OFDMA physical layer signaling, where terminals and subchannels within a terminal group have a one-to-one correspondence.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

Further, the transmitter 30 is specifically configured to transmit an orthogonal frequency division multiplexing OFDM preamble to the terminal, where the OFDM preamble carries OFDMA physical layer signaling.

As appropriate, the transmitter 30 may be further configured to transmit null data packet announcement NDPA frames to the terminal, where the NDPA frames carry OFDMA physical layer signaling.

As appropriate, the transmitter 30 transmits an NDPA frame and an OFDM preamble to the terminal, where the NDPA frame carries the terminal identifier in OFDMA physical layer signaling, and the OFDM preamble corresponds to the terminal identifier and OFDMA. It may be further configured to carry subchannel information within the physical layer signaling.

As appropriate, the transmitter 30 transmits an NDPA frame and an OFDM preamble to the terminal, where the NDPA frame corresponds to the terminal's identifier and carries subchannel information within the OFDMA physical layer signaling, and the OFDM preamble , It may be further configured to carry the identifier of the terminal in OFDMA physical layer signaling.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

Further, OFDMA physical layer signaling is specifically used to indicate to the terminal the subchannels allocated to the terminal to receive downlink OFDMA data information, in which case the transmitter 30 is an orthogonal frequency split multiple connection OFDMA. After the physical layer signaling is transmitted to the terminal, downlink OFDMA data information is transmitted on the subchannel corresponding to the terminal in OFDMA mode, where the downlink OFDMA data information includes OFDMA preambles and OFDMA data. The preamble may be further configured to include a switching field and ultra high throughput signaling B UHT-SIG-B.

As appropriate, the method in which the transmitter 30 transmits downlink OFDMA data information to each terminal on the subchannel corresponding to the terminal is an inverse discrete Fourier transform (Inverse Discrete Fourier Transform) corresponding to the antenna of the access point in the transmitter 30. It can be implemented by constructing an IDFT) module for short, that is, the access point first encodes the downlink data of multiple terminals into multiple spatiotemporal streams, spatial stream separation, And spatiotemporal coding may be performed and a reference to FIG. 28 may be made. The spatiotemporal stream corresponds to the access point's antenna. Spatio-temporal streams of different terminals on the same antenna are mapped and transmitted to the subchannel or subcarrier corresponding to the terminal by using the IDFT module corresponding to the antenna, thereby each corresponding downlink. OFDMA data information is transmitted to the terminal by using different subchannels. If the access point has more than one antenna, there is a corresponding number of IDFT modules (if the number of antennas is M, then the number of IDFT modules is M as well). All of these IDFT modules operate in the same frequency band. Therefore, for OFDMA where the access point has multiple antennas, different users work on different subchannels, and on the same subchannel, the access point's spatiotemporal streams are distinguished by using spatial mapping. obtain. Spatio-temporal streams may further support MU-MIMO implementations on subchannels.

Correspondingly, the terminal performs a demodulation by using the Discrete Fourier Transform (DFT) module, acquires the data at the receiving end, and follows the indication of OFDMA physical layer signaling. Gets data on the subchannel where is located. If the data is a multi-antenna spatial mapping signal, the signal is separated by using multiple antennas, or if the data is a single antenna signal, the signal does not need to be separated.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

FIG. 29 is a schematic structural diagram of the fourth embodiment of the access point according to the present invention. The access point comprises the transmitter 30 described above, and further comprises a receiver 31.

The OFDMA physical layer signaling or the above-mentioned downlink OFDMA data information carries an OFDMA acknowledgment ACK request or an OFDMA block acknowledgment BA request, and the OFDMA ACK request or OFDMA BA request accesses the ACK response or BA response in OFDMA mode. It is used to instruct the terminal to send to the point, in which case the above-mentioned OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is sent to the access point and to the terminal. Further used to indicate an allocated subchannel, in which case the receiver 31 is in OFDMA mode after the transmitter 30 has transmitted downlink OFDMA data information on the subchannel corresponding to the terminal in OFDMA mode. It is configured to receive an ACK or BA response sent by the terminal on the subchannel corresponding to the terminal.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

As appropriate, OFDMA physical layer signaling is used to correspond to the terminal and an ACK or BA response is sent to the access point and to indicate a subchannel allocated to the terminal, in which case the transmitter 30 Sends an ACK request frame or BA request frame to the terminal after the downlink OFDMA data information has been transmitted on the subchannel corresponding to the terminal, where the ACK request frame or BA request frame contains a dedicated information bit. The dedicated information bit may be further configured to be used in the OFDMA mode to instruct the terminal to send an ACK or BA response to the access point, and the receiver 31 is in OFDMA mode. It may be further configured to receive an ACK or BA response transmitted by the terminal on the corresponding subchannel.

As appropriate, OFDMA physical layer signaling is used to carry an OFDMA ACK or OFDMA BA request, and the OFDMA ACK or OFDMA BA request is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode. And in that case, OFDMA physical layer signaling is specifically used to correspond to the terminal and to indicate to the terminal the subchannels assigned to the terminal as well as the ACK or BA response being sent to the access point. In that case, the transmitter 30 transmits the MU-MIMO data information to the terminal in the multi-user multi-input multi-output MU-MIMO mode, where the MU-MIMO data information carries OFDMA physical layer signaling. Particularly configured, the receiver 31 receives the ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode after the transmitter 30 has transmitted the orthogonal frequency split multiple connection OFDMA physical layer signaling to the terminal. It may be further configured to do so.

As appropriate, OFDMA physical layer signaling is specifically used to correspond to the terminal and to indicate to the terminal the subchannels assigned to the terminal as well as the ACK or BA response being sent to the access point, in which case. The transmitter 30 transmits MU-MIMO data information to the terminal in MU-MIMO mode, where the MU-MIMO data information carries OFDMA physical layer signaling and transmits an ACK request frame or BA request frame to the terminal. Here, the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit is used to instruct the terminal to send an ACK response or a BA response to the access point in OFDMA mode. Particularly configured, the receiver 31 receives an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode after the transmitter has transmitted the orthogonal frequency split multiple connection OFDMA physical layer signaling to the terminal. It may be further configured as follows.

As appropriate, OFDMA physical layer signaling is specifically used to correspond to the terminal and to indicate to the terminal the subchannels assigned to the terminal as well as the ACK or BA response being sent to the access point, in which case. The transmitter 30 transmits the MU-MIMO data information to the terminal in the MU-MIMO mode, and also transmits the ACK request frame or the BA request frame to the terminal, where the ACK request frame or the BA request frame has a dedicated information bit. Including, the dedicated information bit is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode, such that the ACK or BA request frame carries OFDMA physical layer signaling. Particularly configured, the receiver 31 receives an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode after the transmitter 30 has transmitted the orthogonal frequency split multiple connection OFDMA physical layer signaling to the terminal. It may be further configured to do so.

As appropriate, OFDMA physical layer signaling is used to carry an OFDMA ACK or OFDMA BA request, and the OFDMA ACK or OFDMA BA request is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode. And in that case, OFDMA physical layer signaling is specifically used to correspond to the terminal and to indicate to the terminal the subchannels assigned to the terminal as well as the ACK or BA response being sent to the access point. The transmitter 30 is further configured to transmit OFDMA + MU-MIMO data information to the terminal on the subchannel corresponding to the terminal in OFDMA + MU-MIMO mode after the orthogonal frequency division multiple connection OFDMA physical layer signaling is transmitted to the terminal. The receiver 31 may be further configured to receive an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode.

As appropriate, OFDMA physical layer signaling is specifically used to correspond to the terminal and to indicate to the terminal the subchannels assigned to the terminal as well as the ACK or BA response being sent to the access point, in which case. The transmitter 30 transmits the OFDMA + MU-MIMO data information to the terminal on the subchannel corresponding to the terminal in the OFDMA + MU-MIMO mode after the orthogonal frequency division multiple connection OFDMA physical layer signaling is transmitted to the terminal, and the ACK request frame. Alternatively, a BA request frame is transmitted to the terminal, where the ACK request frame or BA request frame includes a dedicated information bit, which causes the terminal to transmit an ACK or BA response to the access point in OFDMA mode. Further configured to be used to indicate, the receiver 31 may be further configured to receive an ACK or BA response transmitted by the terminal on the corresponding subchannel in OFDMA mode. ..

As appropriate, OFDMA physical layer signaling is specifically used to correspond to the terminal, transmit uplink OFDMA data information to the access point, and indicate to the terminal the subchannels allocated to the terminal, in which case. The receiver 31 receives the uplink transmission frame transmitted by the terminal before the transmitter 30 transmits the orthogonal frequency division multiple connection OFDMA physical layer signaling to the terminal, and the transmitter 30 receives the orthogonal frequency division multiple connection OFDMA physical. After transmitting the layer signaling to the terminal, it may be further configured to receive the uplink OFDMA data information transmitted by the terminal on the corresponding subchannel in OFDMA mode. As appropriate, the transmitter 30 may further transmit uplink OFDMA data information by using the IDFT module, whereby each terminal is mapped only by using the IDFT module according to OFDMA physical layer signaling. The part corresponding to the terminal in the subchannel or the subcarrier may be learned, the other part may be set to 0, and reference to FIG. 30 may be made.

As appropriate, the uplink OFDMA data information carries an OFDMA ACK or OFDMA BA request, and the OFDMA ACK or OFDMA BA request directs the access point to send an ACK or BA response to the terminal in OFDMA mode. Further used, in which case the transmitter 30 is up on the subchannel corresponding to the terminal in OFDMA mode after receiving the uplink OFDMA data information transmitted by the terminal on the subchannel corresponding to the receiver 31. It is further configured to transmit an ACK or BA response corresponding to the link OFDMA data information.

As appropriate, OFDMA physical layer signaling is specifically used to correspond to the terminal, transmit uplink OFDMA data information to the access point, and indicate to the terminal the subchannels allocated to the terminal, in which case. The receiver 31 further receives the uplink OFDMA data information transmitted by the terminal on the corresponding subchannel in OFDMA mode after the transmitter 30 has transmitted the orthogonal frequency split multi-unit connection OFDMA physical layer signaling to the terminal. It is composed.

The access point provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and its mounting principle and technical effect are similar and detailed. Is not explained here again.

FIG. 31 is a schematic structural diagram of a fourth embodiment of the terminal according to the present invention. As shown in FIG. 31, the terminal includes a receiver 40 and a processor 41.

The receiver 40 receives the orthogonal frequency division multiple access OFDMA physical layer signaling transmitted by the access point, where the OFDMA physical layer signaling indicates to the terminal the subchannels allocated by the access point to the terminal. Used in, where OFDMA physical layer signaling is configured to include a terminal identifier and subchannel information corresponding to the terminal identifier.

Processor 41 is configured to determine the subchannel corresponding to the terminal according to OFDMA physical layer signaling.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

As appropriate, the terminal identifier is an identifier for one or more terminal groups, each terminal group comprising at least one terminal, in which case to indicate to the terminal the subchannel assigned to the terminal. The OFDMA physical layer signaling used is used to indicate to each terminal group that the assigned subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. Contains OFDMA physical layer signaling, where terminal groups and subchannels have a one-to-one correspondence.

The receiver 40 receives the mapping relationship between the terminal group identifier and the terminal address before receiving the orthogonal frequency split multiple connection OFDMA physical layer signaling transmitted by the access point, where the mapping relationship. May be further configured to be transmitted by the access point, in which case the processor 41 determines that the terminal is located in the terminal group according to the mapping relationship, in which case the terminal. It is specifically configured to determine that the subchannel corresponding to the group is the subchannel corresponding to the terminal.

As appropriate, the terminal identifier is an identifier for one terminal group, which includes at least two terminals and is used to indicate to the terminals the subchannels assigned to the terminals. OFDMA physical layer signaling is used to indicate to each terminal in a terminal group that the assigned subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. It includes OFDMA physical layer signaling, where terminals and subchannels within a terminal group have a one-to-one correspondence.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

In addition, the receiver 40 is specifically configured to receive orthogonal frequency division multiplexing OFDM preambles transmitted by the access point, where the OFDM preambles carry OFDMA physical layer signaling.

As appropriate, the receiver 40 may be further configured to receive a null data packet announcement NDPA frame transmitted by the access point, where the NDPA frame carries the above-mentioned OFDMA physical layer signaling.

As appropriate, the receiver 40 receives the NDPA frame and OFDM preamble transmitted by the access point, where the NDPA frame carries the identifier of the terminal in OFDMA physical layer signaling, and the OFDM preamble corresponds to the identifier of the terminal. And may be further configured to carry subchannel information within OFDMA physical layer signaling.

As appropriate, the receiver 40 receives the NDPA frame and OFDM preamble transmitted by the access point, where the NDPA frame corresponds to the identifier of the terminal and the subchannel information in the OFDMA physical layer signaling described above. Carry, and the OFDM preamble may be further configured to carry the identifier of the terminal in the above-mentioned OFDMA physical layer signaling.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

Further, OFDMA physical layer signaling is specifically used to indicate to the terminal the subchannels allocated to the terminal by the access point to receive the downlink OFDMA data information, in which case the receiver 40 has the processor 41 After determining the subchannel corresponding to the terminal according to OFDMA physical layer signaling, the downlink OFDMA data information transmitted by the access point is received on the subchannel corresponding to the terminal, and the downlink OFDMA data information is here. The OFDMA preamble and the OFDMA data are included, and the OFDMA preamble is further configured to include a switching field and an ultra-high throughput signaling B UHT-SIG-B.

Further, the receiver 40 corresponds to the OFDMA data, receives the destination terminal address transmitted by the access point, determines whether or not the terminal matches the destination terminal address, and if so, determines whether or not the terminal matches the destination terminal address. , Particularly configured to receive downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

FIG. 32 is a schematic structural diagram of a fifth embodiment of the terminal according to the present invention. Based on the embodiment shown in FIG. 31, the terminal further comprises a transmitter 42.

As appropriate, the above-mentioned OFDMA physical layer signaling or the above-mentioned downlink OFDMA data information carries an OFDMA acknowledgment ACK request or an OFDMA block acknowledgment BA request, and the OFDMA ACK request or OFDMA BA request is an ACK response or BA response in OFDMA mode. Is used to instruct the terminal to send an ACK or BA response to the access point, in which case the OFDMA physical layer signaling described above corresponds to the terminal and an ACK or BA response is sent to the access point and to the terminal. Further used to indicate a subchannel allocated to, in which case the transmitter 42 receives downlink OFDMA data information transmitted by the access point on the subchannel corresponding to the terminal. After receiving, it is configured to transmit an ACK response or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

As appropriate, OFDMA physical layer signaling corresponds to the terminal and an ACK or BA response is sent to the access point and is further used to indicate a subchannel allocated to the terminal, with the receiver 40 accessing. After the downlink OFDMA data information transmitted by the point is received on the subchannel corresponding to the terminal, the ACK request frame or BA request frame transmitted by the access point is received, where the ACK request frame or BA request is received. The frame may include a dedicated information bit, which may be further configured to be used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode. The machine 42 is configured to transmit an ACK response or a BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

As appropriate, OFDMA physical layer signaling is used to carry an OFDMA ACK or OFDMA BA request, and the OFDMA ACK or OFDMA BA request is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode. And in that case, OFDMA physical layer signaling is specifically used to correspond to the terminal and to indicate to the terminal the subchannels assigned to the terminal as well as the ACK or BA response being sent to the access point. In that case, the receiver 40 receives the multi-user multi-input multi-output MU-MIMO data information transmitted by the access point, where the MU-MIMO data information carries OFDMA physical layer signaling, and so on. The transmitter 42 may be configured to provide an ACK or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode after the processor 41 determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling. Is configured to send.

As appropriate, OFDMA physical layer signaling is specifically used to correspond to a terminal and to indicate to the terminal the subchannel allocated to the terminal as well as the ACK or BA response being sent to the access point, in which case. The receiver 40 receives the MU-MIMO data information transmitted by the access point, where the MU-MIMO data information carries the OFDMA physical layer signaling and the ACK or BA request frame transmitted by the access point. Receive, where the ACK or BA request frame contains a dedicated information bit, which is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode. , As may be further configured,
The transmitter 42 is configured to transmit an ACK response or a BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode after the processor 41 determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling. To.

As appropriate, OFDMA physical layer signaling is specifically used to correspond to the terminal and an ACK or BA response is sent to the access point and to indicate to the terminal the subchannels assigned to the terminal, in which case. The receiver 40 receives the MU-MIMO data information transmitted by the access point and also receives the ACK request frame or BA request frame transmitted by the access point, where the ACK request frame or BA request frame is dedicated. The dedicated information bit, including the information bit, is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode, and the ACK or BA request frame carries OFDMA physical layer signaling. In this case, the transmitter 42 may be further configured, such as, on the subchannel corresponding to the terminal in OFDMA mode after the processor 41 determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling. It is configured to send an ACK or BA response to the access point.

As appropriate, OFDMA physical layer signaling is used to carry an OFDMA ACK or OFDMA BA request, and the OFDMA ACK or OFDMA BA request is used to instruct the terminal to send an ACK or BA response to the access point in OFDMA mode. And in that case, OFDMA physical layer signaling is specifically used to correspond to the terminal and to indicate to the terminal the subchannels assigned to the terminal as well as the ACK or BA response being sent to the access point. In that case, the receiver 40 receives the OFDMA + MU-MIMO data information transmitted by the access point on the subchannel corresponding to the terminal after the processor 41 determines the subchannel corresponding to the terminal according to the OFDMA physical layer signaling. The transmitter 42 is configured to transmit an ACK response or a BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode.

As appropriate, OFDMA physical layer signaling is specifically used to correspond to a terminal and an ACK or BA response is sent to the access point and to indicate to the terminal the subchannels allocated to the terminal, in which case. The receiver 40 receives the OFDMA + MU-MIMO data information transmitted by the access point on the sub-channel corresponding to the terminal after the processor 41 determines the sub-channel corresponding to the terminal according to the OFDMA physical layer signaling, and accesses the sub-channel. Receives an ACK or BA request frame transmitted by the point, where the ACK or BA request frame contains a dedicated information bit, which sends the ACK or BA response to the access point in OFDMA mode. It may be further configured to be used to instruct the terminal to transmit, the transmitter 42 transmitting an ACK or BA response to the access point on the subchannel corresponding to the terminal in OFDMA mode. It is configured to.

As appropriate, OFDMA physical layer signaling is specifically used to correspond to the terminal, transmit uplink OFDMA data information to the access point, and indicate to the terminal the subchannels allocated to the terminal, in which case. The transmitter 42 may be further configured to transmit an uplink transmission frame to the access point before the receiver 40 receives the orthogonal frequency split multiple-connection OFDMA physical layer signaling transmitted by the access point. The processor 41 may be further configured to transmit uplink OFDMA data information to the access point on the subchannel corresponding to the terminal in OFDMA mode after determining the subchannel corresponding to the terminal according to OFDMA physical layer signaling. ..

As appropriate, the uplink OFDMA data information carries an OFDMA ACK or OFDMA BA request, and the OFDMA ACK or OFDMA BA request directs the access point to send an ACK or BA response to the terminal in OFDMA mode. Further used, in which case the receiver 40 responds to and accesses the uplink OFDMA data information on the subchannel corresponding to the terminal after the transmitter 42 transmits the uplink OFDMA data information to the access point. It may be further configured to receive an ACK or BA response transmitted by the point.

As appropriate, OFDMA physical layer signaling is specifically used to correspond to a terminal, to transmit uplink OFDMA data information to the access point, and to indicate to the terminal the subchannels allocated to the terminal, in which case. The transmitter 42 is further configured to transmit uplink OFDMA data information to the access point on the subchannel corresponding to the terminal in OFDMA mode after the processor 41 determines the subchannel corresponding to the terminal according to OFDMA physical layer signaling. It may be done.

The terminal provided in this embodiment of the present invention may implement the technical solution of the embodiment of the data transmission indication method described above, and the mounting principle and technical effect thereof are similar, and the details are described. Not explained here again.

Finally, it should be noted that the aforementioned embodiments are intended only to illustrate the technical solutions of the invention and are not intended to limit the invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will still be able to use the above embodiments without departing from the scope of the technical solutions of the embodiments of the present invention. It will be appreciated that it is possible to make modifications to the technical solutions described or to make equivalent replacements for some or all of the technical features thereof.

Claims (20)

It is a data transmission indication method
A step of transmitting orthogonal frequency division multiplex connection (OFDMA) physical layer signaling to a terminal by an access point, wherein the OFDMA physical layer signaling is used to indicate to the terminal a subchannel allocated to the terminal. Thereby, the terminal determines the subchannel corresponding to the terminal according to the OFDMA physical layer signaling, and the OFDMA physical layer signaling determines the identifier of the terminal and the subchannel information corresponding to the identifier of the terminal. A method that includes steps, including. The identifier of the terminal is an identifier of one or more terminal groups, each terminal group includes at least one terminal, and the subchannel information is an uplink subchannel or a downlink subchannel or an uplink and The OFDMA physical layer signaling includes a downlink bidirectional subchannel, in which case the subchannel allocated to the terminal is used to indicate to the terminal.
Each terminal group comprises the OFDMA physical layer signaling used to indicate that the allocated subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. The method according to claim 1, wherein the terminal group and the subchannel have a one-to-one correspondence relationship. The step of transmitting orthogonal frequency division multiple access (OFDA) physical layer signaling to the terminal by the access point is
A step of transmitting an orthogonal frequency division multiplexing (OFDM) preamble to the terminal by the access point, wherein the OFDM preamble carries the OFDMA physical layer signaling, or a null data packet announcement by the access point. The method of claim 1 or 2, wherein the NDPA frame is a step of transmitting a ment (NDPA) frame to the terminal, wherein the NDPA frame carries the OFDMA physical layer signaling, comprising the step. The OFDMA physical layer signaling is used to indicate to the terminal a subchannel allocated to the terminal to receive downlink OFDMA data information, in which case the access point provides orthogonal frequency split multiple connection (OFDMA). ) After the step of transmitting physical layer signaling to the terminal, the method
The step of transmitting downlink OFDMA data information on the sub-channel corresponding to the terminal in OFDMA mode by the access point, wherein the downlink OFDMA data information includes OFDMA preamble and OFDMA data from claim 1. The method according to any one of 3. The OFDMA physical layer signaling or the downlink OFDMA data information carries an OFDMA acknowledgment (ACK) request or an OFDMA block acknowledgment (BA) request, and the OFDMA ACK request or the OFDMA BA request is an ACK response in the OFDMA mode. Alternatively, it is used to instruct the terminal to send a BA response to the access point, in which case the OFDMA physical layer signaling corresponds to the terminal and the ACK response or the BA response corresponds to the access point. And is further used to indicate the subchannel allocated to the terminal, in which case the access point causes the downlink OFDMA on the subchannel corresponding to the terminal in OFDMA mode. After the step of transmitting data information, the method
The method of claim 4, further comprising receiving the ACK response or BA response transmitted by the terminal on the subchannel corresponding to the terminal in the OFDMA mode by the access point. The OFDMA physical layer signaling is used to correspond to the terminal and to indicate the subchannel allocated to the terminal as well as the ACK or BA response being transmitted to the access point. In addition, after the step of transmitting downlink OFDMA data information on the subchannel corresponding to the terminal by the access point, the method.
A step of transmitting an ACK request frame or a BA request frame to the terminal by the access point, wherein the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit is said in the OFDMA mode. A step and a step used to instruct the terminal to send an ACK response or the BA response to the access point.
The method of claim 5, further comprising the step of receiving the ACK response or the BA response transmitted by the terminal on the corresponding subchannel in the OFDMA mode by the access point. The OFDMA physical layer signaling is used to correspond to the terminal, to transmit the ACK response or the BA response to the access point, and to indicate to the terminal the subchannel allocated to the terminal. In that case, the step of transmitting orthogonal frequency splitting multiplex connection (OFDA) physical layer signaling to the terminal by the access point is
A step of transmitting MU-MIMO data information to the terminal in the MU-MIMO mode by the access point,
A step of transmitting an ACK request frame or a BA request frame to the terminal by the access point, wherein the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit is the ACK in OFDMA mode. Including a step, which is used to instruct the terminal to send a response or the BA response to the access point.
The OFDMA physical layer signaling is carried in at least one of the MU-MIMO data information, the ACK request frame, and the BA request frame.
In that case, after the step of transmitting the orthogonal frequency division multiple access (OFDMA) physical layer signaling to the terminal by the access point, the method
The method of claim 5, further comprising receiving the ACK response or BA response transmitted by the terminal on the subchannel corresponding to the terminal in the OFDMA mode by the access point. The OFDMA physical layer signaling is used to correspond to the terminal, to transmit the ACK response or the BA response to the access point, and to indicate to the terminal the subchannel allocated to the terminal. After the step of transmitting orthogonal frequency division multiplex connection (OFDMA) physical layer signaling to the terminal by the access point, the method
A step of transmitting OFDMA + MU-MIMO data information to the terminal on a subchannel corresponding to the terminal in OFDMA + MU-MIMO mode by the access point.
A step of transmitting an ACK request frame or a BA request frame to the terminal by the access point, wherein the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit is the ACK in OFDMA mode. A step and a step used to instruct the terminal to send a response or said BA response to said access point.
The method of claim 5, further comprising the step of receiving the ACK response or the BA response transmitted by the terminal on the corresponding subchannel in the OFDMA mode by the access point. The OFDMA physical layer signaling is used to correspond to the terminal, transmit uplink OFDMA data information to the access point, and indicate to the terminal the subchannel allocated to the terminal. If the access point is before the step of transmitting orthogonal frequency splitting multiplex connection (OFDMA) physical layer signaling to the terminal, the method is:
The access point further comprises the step of receiving an uplink transmission frame transmitted by the terminal.
In that case, after the step of transmitting orthogonal frequency division multiple access (OFDMA) physical layer signaling to the terminal by the access point, the method
The method according to any one of claims 1 to 3, further comprising the step of receiving the uplink OFDMA data information transmitted by the terminal on the corresponding subchannel in OFDMA mode by the access point. The uplink OFDMA data information carries an OFDMA ACK request or an OFDMA BA request, and the OFDMA ACK request or the OFDMA BA request is sent to the access point to transmit an ACK response or a BA response to the terminal in the OFDMA mode. The method is further used to indicate, in which case, after the step of receiving the uplink OFDMA data information transmitted by the terminal on the corresponding subchannel by the access point.
9. The method of claim 9, further comprising the step of transmitting the ACK response or the BA response corresponding to the uplink OFDMA data information on the subchannel corresponding to the terminal in the OFDMA mode by the access point. It ’s an access point,
A transmission module configured to transmit orthogonal frequency division multiplex connection (OFDMA) physical layer signaling to a terminal, the OFDMA physical layer signaling to indicate to the terminal a subchannel assigned to the terminal. Used in, thereby the terminal determines the subchannel corresponding to the terminal according to the OFDMA physical layer signaling, the OFDMA physical layer signaling is the identifier of the terminal and the sub corresponding to the identifier of the terminal. An access point with a transmit module that contains channel information. The identifier of the terminal is an identifier of one or more terminal groups, each terminal group includes at least one terminal, and the subchannel information is an uplink subchannel or a downlink subchannel or an uplink and The OFDMA physical layer signaling includes a downlink bidirectional subchannel, in which case the subchannel allocated to the terminal is used to indicate to the terminal.
Each terminal group comprises the OFDMA physical layer signaling used to indicate that the allocated subchannel is an uplink subchannel or a downlink subchannel or an uplink and a downlink bidirectional subchannel. The access point according to claim 11, wherein the terminal group and the subchannel have a one-to-one correspondence relationship. The transmission module transmits an orthogonal frequency division multiplexing (OFDM) preamble to the terminal, and the OFDM preamble is configured to carry the OFDMA physical layer signaling, or null data packet announcement (NDPA). The access point according to claim 11 or 12, wherein the frame is transmitted to the terminal, and the NDPA frame carries the OFDMA physical layer signaling. The OFDMA physical layer signaling is used to indicate to the terminal a subchannel allocated to the terminal to receive downlink OFDMA data information, in which case the transmitting module is the orthogonal frequency split multi-dimensional connection. (OFDMA) After the physical layer signaling is transmitted to the terminal, downlink OFDMA data information is transmitted on the subchannel corresponding to the terminal in OFDMA mode, and the downlink OFDMA data information is the OFDMA preamble and OFDMA data. The access point according to any one of claims 11 to 13, further configured to include. The OFDMA physical layer signaling or the downlink OFDMA data information carries an OFDMA acknowledgment (ACK) request or an OFDMA block acknowledgment (BA) request, and the OFDMA ACK request or the OFDMA BA request is an ACK response in the OFDMA mode. Alternatively, it is used to instruct the terminal to send a BA response to the access point, in which case the OFDMA physical layer signaling corresponds to the terminal and the ACK response or the BA response corresponds to the access point. Also used to indicate the subchannel allocated to the terminal, in which case the access point is
After the transmission module transmits the downlink OFDMA data information on the subchannel corresponding to the terminal in the OFDMA mode, the terminal transmitted by the terminal on the subchannel corresponding to the terminal in the OFDMA mode. The access point according to claim 14, further comprising a receiving module configured to receive an ACK response or the BA response. The OFDMA physical layer signaling is used to correspond to the terminal and to indicate the subchannel allocated to the terminal as well as the ACK or BA response being transmitted to the access point. In addition, the transmission module transmits an ACK request frame or a BA request frame to the terminal after the downlink OFDMA data information is transmitted on the sub-channel corresponding to the terminal, and the ACK request frame or the BA The request frame further comprises a dedicated information bit, which is further configured to be used in the OFDMA mode to instruct the terminal to send the ACK response or the BA response to the access point. Being done
15. The access point of claim 15, wherein the receiving module is further configured to receive the ACK or BA response transmitted by the terminal on the corresponding subchannel in the OFDMA mode. The OFDMA physical layer signaling is used to correspond to the terminal, to transmit the ACK response or the BA response to the access point, and to indicate to the terminal the subchannel allocated to the terminal. In that case, the transmission module transmits MU-MIMO data information to the terminal in the MU-MIMO mode, and transmits an ACK request frame or a BA request frame to the terminal, and the ACK request frame or the BA request. The frame comprises a dedicated information bit, which is configured to be used in the OFDMA mode to instruct the terminal to send the ACK response or the BA response to the access point.
The OFDMA physical layer signaling is carried in at least one of the MU-MIMO data information, the ACK request frame, and the BA request frame.
In that case, the receiving module is transmitted by the terminal on the subchannel corresponding to the terminal in the OFDMA mode after the transmitting module transmits orthogonal frequency division multiple access (OFDA) physical layer signaling to the terminal. 15. The access point of claim 15, further configured to receive said ACK or BA response. The OFDMA physical layer signaling is used to correspond to the terminal and to transmit the ACK response or the BA response to the access point and to indicate to the terminal the subchannel allocated to the terminal. In that case, the transmitting module delivers OFDMA + MU-MIMO data on the subchannel corresponding to the terminal in OFDMA + MU-MIMO mode after the orthogonal frequency division multiplex connection (OFDMA) physical layer signaling has been transmitted to the terminal. Information is transmitted to the terminal and an ACK request frame or a BA request frame is transmitted to the terminal, the ACK request frame or the BA request frame includes a dedicated information bit, and the dedicated information bit is the ACK in OFDMA mode. Further configured to be used to instruct the terminal to send a response or said BA response to said access point.
15. The access point of claim 15, wherein the receiving module is further configured to receive the ACK or BA response transmitted by the terminal on the corresponding subchannel in the OFDMA mode. .. The OFDMA physical layer signaling is used to correspond to the terminal, transmit uplink OFDMA data information to the access point, and indicate to the terminal the subchannel allocated to the terminal.
In that case, the receiving module receives the uplink transmission frame transmitted by the terminal before the transmitting module transmits orthogonal frequency division multiplex connection (OFDA) physical layer signaling to the terminal, and the transmitting module Is further configured to receive the uplink OFDMA data information transmitted by the terminal on the corresponding subchannel in OFDMA mode after transmitting the orthogonal frequency division multiplex connection (OFDMA) physical layer signaling to the terminal. The access point according to claim 15. The uplink OFDMA data information carries an OFDMA ACK request or an OFDMA BA request, and the OFDMA ACK request or the OFDMA BA request is sent to the access point to transmit an ACK response or a BA response to the terminal in the OFDMA mode. Further used to indicate, in which case the transmit module receives the uplink OFDMA data information transmitted by the terminal on the corresponding subchannel and then in the OFDMA mode the said. 19. The access point according to claim 19, further configured to transmit the ACK response or the BA response corresponding to the uplink OFDMA data information on the subchannel corresponding to the terminal.

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