CN107079519B - Network equipment, terminal and data transmission method - Google Patents

Abstract

The invention relates to the technical field of communication, in particular to network equipment, a terminal and a data transmission method, which are used for solving the problem that the capacity of the existing signaling information field can not meet the communication requirements of a plurality of terminals when the network equipment is communicated with the plurality of terminals. In a network device, a first sending unit sends packet information to a plurality of terminals scheduled by the network device, wherein the packet information comprises a terminal identification sequence which comprises terminal identifications of the plurality of terminals arranged in sequence; and the second sending unit sends a data frame, wherein the data frame carries target receiving terminal information used for indicating a target receiving terminal, and the target receiving terminal information is the sequence of the terminal identifier of the target receiving terminal in the terminal identifier sequence. The terminal is identified through the sequence information of the terminal, so that the terminal identification occupying more information bits is avoided, and the capacity of the existing signaling information field can meet the communication requirements of a plurality of terminals.

Description

A network device, terminal and data transmission method

technical field

The present invention relates to the field of communication technologies, and in particular, to a network device, a terminal and a data transmission method.

Background technique

Orthogonal Frequency Division Multiplexing (OFDM) is a basic communication transmission method, which is not only widely used in Long Term Evolution (LTE), Worldwide Interoperability for Microwave Access (WiMAX) ), wireless fidelity (Wireless Fidelity, Wifi) wireless transmission in wireless communication systems; and can be used for wired transmission such as optical fibers, copper stranded wires, and cables.

The basic principle of OFDM is to use the orthogonality of sub-carriers to compress the sub-carrier spacing to the minimum within the allowable range to form multiple parallel paths that do not interfere with each other, which improves the frequency utilization efficiency of the system. If subcarriers of OFDM that do not interfere with each other are allocated to multiple users, multi-user access or data transmission can be realized by using OFDM, that is, Orthogonal Frequency Division Multiple Access (OFDMA).

In a wireless local area network (Wireless Local Access Network, WLAN), data transmission is performed in units of frames (frames). Generally, the frame header of each frame indicates the relevant information of the frame, such as basic information such as modulation and coding scheme (Modulation and Coding Scheme, MCS), frame length, and bandwidth. Through the indication of the frame header, the receiving end can accurately configure the parameters of the physical layer, and perform demodulation and decoding. Usually this information is located in the physical layer signaling (SIG) of each frame. In the frame of IEEE802.11ac shown in FIG. 1, the above information is located in the physical layer signaling VHT-SIG-A.

In order to support OFDMA in WLAN, the access point (Access Point, AP) needs to indicate the resources used by the station (STAtion, STA) as early as possible. One possible method is to carry the resource information of the resources used by the STA through the above information, Put it in a field similar to VHT-SIG-A. To distinguish it from VHT-SIG-A, a field containing resource information of resources used by STAs is called NG-SIG-A.

It can be seen from Figure 1 that the length of the VHT-SIG-A field is only 8 μs (it can include two OFDM symbols, with a total of 48 bits). Similarly, the number of information bits that can be transmitted by NG-SIG-A is also very limited. When OFDMA is supported in WLAN, it may be necessary to communicate with multiple STAs at the same time, so the NG-SIG-A needs to carry at least the STA identifier and the resource information of the resources used for each STA. If the MAC address is used as the STA identifier, the MAC address of one STA occupies 48 bits. If 16 STAs are scheduled to transmit at the same time, only the STA identifier needs to occupy 768 bits, and the capacity of the NG-SIG-A field cannot meet the above information transmission requirements.

To sum up, when OFDMA is applied in a WLAN system, when an AP communicates with multiple STAs, the capacity of the existing signaling information field cannot meet the transmission requirements of multiple STAs.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a network device, a terminal and a data transmission method to solve the problem that the capacity of the existing signaling information field cannot meet the communication requirements of multiple terminals when the network device communicates with multiple terminals in a communication system.

In a first aspect, an embodiment of the present invention provides a network device, including:

a first sending unit, configured to send grouping information to multiple terminals scheduled by the network device, where the grouping information includes a terminal identification sequence, and the terminal identification sequence includes the terminal identifications of the multiple terminals arranged in sequence;

The second sending unit is configured to send a data frame, where the data frame carries target receiving terminal information used to indicate a target receiving terminal, wherein the target receiving terminal information is the terminal identifier of the target receiving terminal in the terminal identifier order in the sequence.

In combination with the first aspect, in a first possible implementation manner, the grouping information specifically includes: the unit channel identifiers of each unit channel used by the multiple terminals, and the corresponding unit channel identifiers, including the use of sequential arrangement The terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

The second sending unit is specifically configured to: on the target unit channel, send the data frame to the target receiving terminal, wherein the target unit channel is a unit channel used by the target receiving terminal;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the target receiving terminal in the terminal identification sequence corresponding to the unit channel identification of the target unit channel.

With reference to the first aspect, in a second possible implementation manner, a multi-user multiple-input multiple-output MU-MIMO manner is used for data transmission between the network device and the multiple terminals, and the multiple terminals belong to at least one a MU-MIMO group, where the terminal identification sequence includes sequentially arranged MU-MIMO group identifiers of the MU-MIMO groups to which the multiple terminals belong;

The second sending unit is specifically configured to: send the data frame to each terminal in the target MU-MIMO group, where the data in the data frame is based on the network device and each terminal in the target MU-MIMO group. The terminals are placed in a pre-agreed order, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

With reference to the first aspect, in a third possible implementation manner, the network device and the multiple terminals use MU-MIMO for data transmission, and the multiple terminals belong to N MU-MIMO groups, and the first N- Each MU-MIMO group in one MU-MIMO group includes K terminals among the multiple terminals, the Nth MU-MIMO group includes M terminals among the multiple terminals, and the multiple terminals The total number of terminals is K*(N-1)+M; in the grouping information, in the terminal identifier sequence of the multiple terminals, the K terminals identified by the first K terminal identifiers belong to the first MU- MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on, the M terminals identified by the last M terminal identifiers belong to the Nth MU-MIMO group; where K , M, N are positive integers, M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the target MU-MIMO group is in N MUs - the sequence number in the MIMO group, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The second sending unit is specifically configured to: send the data frame to each terminal in the target MU-MIMO group, where the data in the data frame is based on the network device and the target MU-MIMO group. The terminals are placed in the pre-agreed order.

In conjunction with the first aspect, the first possible implementation manner of the first aspect, the second possible implementation manner of the first aspect, or the third possible implementation manner of the first aspect, in the fourth possible implementation manner , the target receiving terminal information is located in the physical layer signaling SIG of the data frame.

With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the SIG of the data frame further includes resource information of physical layer resources allocated to the target receiving terminal.

With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, the network device and the multiple terminals use an orthogonal frequency division multiple access (OFDMA) manner for data transmission, and the resource information Including: OFDMA sub-channel information.

With reference to the fifth possible implementation manner or the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner, the network device and the multiple terminals perform data transmission in a MU-MIMO manner, The resource information includes: space-time flow information.

With reference to the first aspect, or any one of the first possible implementation manner to the seventh possible implementation manner of the first aspect, in the eighth possible implementation manner, the first sending unit is further configured to :

Under the control of the processing unit, the information of the effective duration of the grouping information is sent to the plurality of terminals.

With reference to the eighth possible implementation manner of the first aspect, in the ninth possible implementation manner, the first sending unit is specifically configured to:

The information of the effective duration is carried through a dedicated field or a Duration field in the data frame.

In a second aspect, an embodiment of the present invention provides a network device, including:

a first sending unit, configured to send grouping information to multiple terminals scheduled by the network device, where the grouping information includes: a group identifier of each group of multiple groups that the network equipment divides the multiple terminals into , and corresponding to each group identification, including a terminal identification sequence, and the terminal identification sequence includes the terminal identification of each terminal in the grouping identified by the group identification arranged in sequence;

a second sending unit, configured to send a data frame, where the data frame carries a target group identifier and target receiving terminal information for indicating the target receiving terminal;

The target group identifier is the group identifier of the group to which the target receiving terminal belongs, and the target receiving terminal information is: in the group information, the terminal identifier of the target receiving terminal, the target receiving terminal to which the target receiving terminal belongs The order in the terminal identification sequence corresponding to the group identification of the grouping.

With reference to the second aspect, in a first possible implementation manner, in the multiple groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping The information specifically includes: a grouping identifier of each grouping, a grouping identifier corresponding to each grouping, a unit channel identifier of each unit channel used by each terminal included in the grouping identified by the grouping identifier, and a channel identifier corresponding to each grouping identifier. Each unit channel identification, including in the grouping identified by the grouping identification arranged in sequence, uses the terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

The target receiving terminal information is specifically: in the grouping information, the terminal identifier of the target receiving terminal corresponds to the unit channel identifier of the target unit channel used by the target receiving terminal in the group to which the target receiving terminal belongs. the order in the terminal identification sequence;

The second sending unit is specifically configured to send the data frame to the target receiving terminal on the target unit channel.

With reference to the second aspect, in a second possible implementation manner, the network device and the multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one a MU-MIMO group, corresponding to each group identifier, and the terminal identifier sequence includes the sequentially arranged MU-MIMO group identifiers of the MU-MIMO groups to which each terminal in the group identified by the group identifier belongs;

The second sending unit is specifically configured to: send the data frame to each terminal in the target MU-MIMO group, where the data in the data frame is based on the network device and each terminal in the target MU-MIMO group. The terminals are placed in a pre-agreed order, wherein the MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

With reference to the second aspect, in a third possible implementation manner, the network device and the multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group;

For any one of the multiple groups, if the terminals in the group belong to N MU-MIMO groups, each MU-MIMO group in the first N-1 MU-MIMO groups includes K in the group Terminal, the Nth MU-MIMO group includes M terminals in the group, and there are K*(N-1)+M terminals in the group, then in the group information, the information of each terminal belonging to the group is In the terminal identification sequence, the K terminals identified by the first K terminal identifications belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifications belong to the second MU-MIMO group, and so on. The M terminals identified by the last M terminal identifiers belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the terminal identifier of the first terminal in the target MU-MIMO group is the terminal identifier corresponding to the grouping identifier of the group to which the target MU-MIMO group belongs. the order in the sequence; or the sequence number of the target MU-MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, where the target MU-MIMO group is the MU-MIMO to which the target receiving terminal belongs MIMO group;

The second sending unit is specifically configured to: send the data frame to each terminal in the target MU-MIMO group, where the data in the data frame is based on the network device and the target MU-MIMO group. The terminals are placed in the pre-agreed order.

In combination with the second aspect, the first possible implementation manner of the second aspect, the second possible implementation manner of the second aspect, or the third possible implementation manner of the second aspect, in the fourth possible implementation manner , the target receiving terminal information is located in the physical layer signaling SIG of the data frame.

With reference to the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner, the SIG of the data frame further includes resource information of physical layer resources allocated to the target receiving terminal.

With reference to the fifth possible implementation manner of the second aspect, in a sixth possible implementation manner, the network device and the multiple terminals use an orthogonal frequency division multiple access (OFDMA) manner for data transmission, and the resource information Including: OFDMA sub-channel information.

With reference to the fifth possible implementation manner or the sixth possible implementation manner of the second aspect, in a seventh possible implementation manner, the network device and the multiple terminals perform data transmission in a MU-MIMO manner, The resource information includes: space-time flow information.

With reference to the second aspect, or any one of the first possible implementation manner to the seventh possible implementation manner of the second aspect, in the eighth possible implementation manner, the first sending unit is further configured to :

Under the control of the processing unit, the information of the effective duration of the grouping information is sent to the plurality of terminals.

With reference to the eighth possible implementation manner of the second aspect, in the ninth possible implementation manner, the first sending unit is specifically configured to:

The information of the effective duration is carried through a dedicated field or a Duration field in the data frame.

In a third aspect, an embodiment of the present invention provides a terminal, including:

a receiving unit, configured to receive grouping information sent by a network device, where the grouping information includes a terminal identification sequence, and the terminal identification sequence includes terminal identifications of multiple terminals scheduled by the network device in sequence;

a processing unit, configured to determine current terminal information, wherein the current terminal information is the order of the terminal identification of the terminal in the terminal identification sequence in the grouping information;

The receiving unit is further configured to: receive a data frame sent by the network device, where the data frame carries target receiving terminal information used to indicate a target receiving terminal to which the data frame is sent, wherein the target receiving terminal information is the order of the terminal identification of the target receiving terminal in the terminal identification sequence in the grouping information;

The processing unit is further configured to: if the current terminal information is the same as the target receiving terminal information, determine that the data frame includes the data sent to the terminal, and obtain the data sent to the terminal from the data frame. the terminal data.

With reference to the third aspect, in a first possible implementation manner, the grouping information specifically includes: the unit channel identifiers of each unit channel used by the multiple terminals, and the corresponding unit channel identifiers, including the use of sequential arrangement The terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

The receiving unit is specifically configured to: receive the data frame sent by the network device on the current unit channel used by the terminal;

The target receiving terminal information is specifically: in the grouping information, the terminal identifier of the target receiving terminal, the order in the terminal identifier sequence corresponding to the unit channel identifier of the unit channel used by the target receiving terminal.

With reference to the third aspect, in a second possible implementation manner, the network device and the multiple terminals perform data transmission in a multi-user multiple-input multiple-output (MU-MIMO) manner, and the multiple terminals belong to at least one MU- a MIMO group, where the terminal identification sequence includes sequentially arranged MU-MIMO group identifiers of the MU-MIMO groups to which the multiple terminals belong;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is in an order pre-agreed by the network device and each terminal in the target MU-MIMO group placing, the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The processing unit is specifically configured to: if it is determined that the data frame includes data sent to the terminal, after the receiving unit receives the data frame, follow the sequence pre-agreed by the network device and the terminal , and obtain the data sent to the terminal from the data frame.

With reference to the third aspect, in a third possible implementation manner, the network device and the multiple terminals use MU-MIMO for data transmission, and the multiple terminals belong to N MU-MIMO groups, and the first N- Each MU-MIMO group in one MU-MIMO group includes K terminals among the multiple terminals, the Nth MU-MIMO group includes M terminals among the multiple terminals, and the multiple terminals The total number of terminals is K*(N-1)+M; in the grouping information, in the terminal identifier sequence of the multiple terminals, the K terminals identified by the first K terminal identifiers belong to the first MU- MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on, the M terminals identified by the last M terminal identifiers belong to the Nth MU-MIMO group; where K , M, N are positive integers, M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the target MU-MIMO group is in N MUs - the sequence number in the MIMO group, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is pre-agreed between the network device and each terminal in the target MU-MIMO group. placed in the order of;

The processing unit is specifically configured to: if it is determined that the data frame includes data sent to the terminal, after the receiving unit receives the data frame, follow the sequence pre-agreed by the network device and the terminal The data sent to the terminal is obtained from the data frame.

In combination with the third aspect, the first possible implementation manner of the third aspect, the second possible implementation manner of the third aspect, or the third possible implementation manner of the third aspect, in the fourth possible implementation manner , the target receiving terminal information is located in the physical layer signaling SIG of the data frame.

With reference to the fourth possible implementation manner of the third aspect, in a fifth possible implementation manner, the SIG of the data frame further includes resource information of physical layer resources allocated to the target receiving terminal.

With reference to the fifth possible implementation manner of the third aspect, in a sixth possible implementation manner, the network device and the multiple terminals use an orthogonal frequency division multiple access (OFDMA) manner for data transmission, and the resource information Including: OFDMA sub-channel information.

With reference to the fifth possible implementation manner or the sixth possible implementation manner of the third aspect, in a seventh possible implementation manner, the network device and the multiple terminals perform data transmission in a MU-MIMO manner, The resource information includes: space-time flow information.

With reference to the third aspect, or any one of the first possible implementation manner to the seventh possible implementation manner of the third aspect, in the eighth possible implementation manner, the receiving unit is further configured to:

Receive the information of the validity period of the packet information sent by the network device.

With reference to the eighth possible implementation manner of the third aspect, in the ninth possible implementation manner, the receiving unit is specifically configured to:

Receive the information of the effective duration carried by the network device through a dedicated field or a Duration field in a data frame.

In a fourth aspect, an embodiment of the present invention provides a terminal, including:

A receiving unit, configured to receive grouping information sent by a network device, where the grouping information includes: a group identifier of each group of multiple groups that the network device divides the scheduled terminals into, and a group identifier corresponding to each group , including a terminal identification sequence, and the terminal identification sequence includes the terminal identification of each terminal in the grouping identified by the grouping identification arranged in sequence;

a processing unit, configured to determine the current group identification and current terminal information; wherein, the current group identification is: in the group information, the group identification corresponding to the terminal identification of the terminal; the current terminal information is: the In the grouping information, the order of the terminal identification of the terminal in the terminal identification sequence corresponding to the current grouping identification;

The receiving unit is further configured to: receive a data frame sent by the network device, where the data frame carries a target group identifier and target receiving terminal information; wherein the target group identifier is the target receiving terminal to which the data frame is sent The group identification of the grouping to which the target receiving terminal belongs; the target receiving terminal information is the order of the terminal identification of the target receiving terminal in the terminal identification sequence corresponding to the grouping identification of the grouping to which the target receiving terminal belongs;

The processing unit is further configured to: if the current grouping identifier is the same as the target grouping identifier, and the current terminal information is the same as the target receiving terminal information, determine that the data frame includes data sent to the terminal. and obtain the data sent to the terminal from the data frame.

With reference to the fourth aspect, in a first possible implementation manner, in the multiple groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping The information specifically includes: a grouping identifier of each grouping, a grouping identifier corresponding to each grouping, a unit channel identifier of each unit channel used by each terminal included in the grouping identified by the grouping identifier, and a channel identifier corresponding to each grouping identifier. Each unit channel identification, including in the grouping identified by the grouping identification arranged in sequence, uses the terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

The target receiving terminal information is specifically: in the grouping information, the terminal identifier of the target receiving terminal corresponds to the unit channel identifier of the target unit channel used by the target receiving terminal in the group to which the target receiving terminal belongs. the order in the terminal identification sequence;

The receiving unit is specifically configured to: receive the data frame sent by the network device on the current unit channel used by the terminal.

With reference to the fourth aspect, in a second possible implementation manner, the network device and the multiple terminals use a multi-user multiple-input multiple-output (MU-MIMO) mode for data transmission, and each of the multiple groups is within each group. Each terminal belonging to at least one MU-MIMO group corresponds to each group identifier, and the terminal identifier sequence includes the MU-MIMO group identifier of the MU-MIMO group to which each terminal in the group identified by the group identifier belongs in sequence. ;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is in an order pre-agreed by the network device and each terminal in the target MU-MIMO group placing, the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The processing unit is specifically configured to: if it is determined that the data frame includes the data sent to the terminal, after receiving the data frame, perform a sequence from the data in an order pre-agreed by the network device and the terminal. The data sent to the terminal is obtained in the frame.

With reference to the fourth aspect, in a third possible implementation manner, the network device and the multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group;

For any one of the multiple groups, if the terminals in the group belong to N MU-MIMO groups, each MU-MIMO group in the first N-1 MU-MIMO groups includes K in the group terminal, the Nth MU-MIMO group includes M terminals in the group, and there are K*(N-1)+M terminals in the group, then in the group information, the terminals of each terminal belonging to the group are In the identification sequence, the K terminals identified by the first K terminal identifiers belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on. The M terminals identified by the M terminal identifiers belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the terminal identifier of the first terminal in the target MU-MIMO group is the terminal identifier corresponding to the grouping identifier of the group to which the target MU-MIMO group belongs. the order in the sequence; or the sequence number of the target MU-MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, where the target MU-MIMO group is the MU-MIMO to which the target receiving terminal belongs MIMO group;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is pre-agreed between the network device and each terminal in the target MU-MIMO group. the order of placement;

The processing unit is specifically configured to: if it is determined that the data frame includes the data sent to the terminal, after receiving the data frame, perform a sequence from the data in an order pre-agreed by the network device and the terminal. The data sent to the terminal is obtained in the frame.

In combination with the fourth aspect, the first possible implementation manner of the fourth aspect, the second possible implementation manner of the fourth aspect, or the third possible implementation manner of the fourth aspect, in the fourth possible implementation manner , the target receiving terminal information is located in the physical layer signaling SIG of the data frame.

With reference to the fourth possible implementation manner of the fourth aspect, in a fifth possible implementation manner, the SIG of the data frame further includes resource information of physical layer resources allocated to the target receiving terminal.

With reference to the fifth possible implementation manner of the fourth aspect, in a sixth possible implementation manner, the network device and the multiple terminals use an orthogonal frequency division multiple access (OFDMA) manner for data transmission, and the resource information Including: OFDMA sub-channel information.

With reference to the fifth possible implementation manner or the sixth possible implementation manner of the fourth aspect, in a seventh possible implementation manner, the network device and the multiple terminals perform data transmission in a MU-MIMO manner, The resource information includes: space-time flow information.

With reference to the fourth aspect, or any one of the first possible implementation manner to the seventh possible implementation manner of the fourth aspect, in the eighth possible implementation manner, the receiving unit is further configured to: receive Information about the validity period of the packet information sent by the network device.

With reference to the eighth possible implementation manner of the fourth aspect, in the ninth possible implementation manner, the receiving unit is specifically configured to: receive the data carried by the network device through the dedicated field or the Duration field in the data frame. information about the duration of validity.

In a fifth aspect, an embodiment of the present invention provides a data transmission method, including:

Sending grouping information to multiple terminals scheduled by the current network device, the grouping information includes a terminal identification sequence, and the terminal identification sequence includes the terminal identifications of the multiple terminals arranged in sequence;

A data frame is sent, where the data frame carries target receiving terminal information used to indicate the target receiving terminal, wherein the target receiving terminal information is the order of the terminal identification of the target receiving terminal in the terminal identification sequence.

With reference to the fifth aspect, in a first possible implementation manner, the grouping information specifically includes: the unit channel identifiers of each unit channel used by the multiple terminals, and corresponding to each unit channel identifier, including the use of sequential arrangement The terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

Sending the data frame includes: on a target unit channel, sending the data frame to the target receiving terminal, wherein the target unit channel is a unit channel used by the target receiving terminal;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the target receiving terminal in the terminal identification sequence corresponding to the unit channel identification of the target unit channel.

With reference to the fifth aspect, in a second possible implementation manner, a multi-user multiple-input multiple-output MU-MIMO manner is used for data transmission between the current network device and the multiple terminals, and the multiple terminals belong to at least one terminal. a MU-MIMO group, where the terminal identification sequence includes sequentially arranged MU-MIMO group identifiers of the MU-MIMO groups to which the multiple terminals belong;

Sending the data frame includes: sending the data frame to each terminal in the target MU-MIMO group, where the data in the data frame is based on the current network device and each terminal in the target MU-MIMO group are placed in a pre-agreed order, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

With reference to the fifth aspect, in a third possible implementation manner, the current network device and the multiple terminals use MU-MIMO for data transmission, and the multiple terminals belong to N MU-MIMO groups, and the first N - Each MU-MIMO group in the 1 MU-MIMO group includes K terminals among the multiple terminals, the Nth MU-MIMO group includes M terminals among the multiple terminals, and the multiple terminals The total number of terminals is K*(N-1)+M; in the grouping information, in the terminal identifier sequence of the multiple terminals, the K terminals identified by the first K terminal identifiers belong to the first MU -MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on, the M terminals identified by the last M terminal identifiers belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the target MU-MIMO group is in N MUs - the sequence number in the MIMO group, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

Sending the data frame includes: sending the data frame to each terminal in the target MU-MIMO group, where the data in the data frame is based on the current network device and the target MU-MIMO group. The terminals are placed in a pre-agreed order.

In conjunction with the fifth aspect, the first possible implementation manner of the fifth aspect, the second possible implementation manner of the fifth aspect, or the third possible implementation manner of the fifth aspect, in the fourth possible implementation manner , the target receiving terminal information is located in the physical layer signaling SIG of the data frame.

With reference to the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation manner, the SIG of the data frame further includes resource information of physical layer resources allocated to the target receiving terminal.

With reference to the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner, the current network device and the multiple terminals use an orthogonal frequency division multiple access (OFDMA) manner for data transmission, and the resource The information includes: information of OFDMA subchannels.

With reference to the fifth possible implementation manner or the sixth possible implementation manner of the fifth aspect, in a seventh possible implementation manner, the current network device and the multiple terminals use MU-MIMO for data transmission , the resource information includes: space-time flow information.

With reference to the fifth aspect, or any one of the first possible implementation manner to the seventh possible implementation manner of the fifth aspect, in the eighth possible implementation manner, the method further includes:

Sending information about the validity period of the grouping information to the plurality of terminals.

With reference to the eighth possible implementation manner of the fifth aspect, in a ninth possible implementation manner, the information of the valid duration is carried through a dedicated field or a Duration field in the data frame.

In a sixth aspect, an embodiment of the present invention provides a data transmission method, including:

Send grouping information to multiple terminals scheduled by the current network device, where the grouping information includes: a group identifier of each group of multiple groups into which the multiple terminals are divided by the current network device, and a group identifier corresponding to each group identification, including a terminal identification sequence, and the terminal identification sequence includes the terminal identification of each terminal in the group identified by the group identification arranged in sequence;

sending a data frame, where the data frame carries a target grouping identifier and target receiving terminal information for indicating the target receiving terminal;

The target group identifier is the group identifier of the group to which the target receiving terminal belongs, and the target receiving terminal information is: in the group information, the terminal identifier of the target receiving terminal, the target receiving terminal to which the target receiving terminal belongs The order in the terminal identification sequence corresponding to the group identification of the grouping.

With reference to the sixth aspect, in a first possible implementation manner, in the multiple groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping The information specifically includes: a grouping identifier of each grouping, a grouping identifier corresponding to each grouping, a unit channel identifier of each unit channel used by each terminal included in the grouping identified by the grouping identifier, and a channel identifier corresponding to each grouping identifier. Each unit channel identification, including in the grouping identified by the grouping identification arranged in sequence, uses the terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

The target receiving terminal information is specifically: in the grouping information, the terminal identifier of the target receiving terminal corresponds to the unit channel identifier of the target unit channel used by the target receiving terminal in the group to which the target receiving terminal belongs. the order in the terminal identification sequence;

Sending the data frame includes: on the target unit channel, sending the data frame to the target receiving terminal.

With reference to the sixth aspect, in a second possible implementation manner, the current network device and the multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one terminal. a MU-MIMO group, corresponding to each group identifier, and the terminal identifier sequence includes the MU-MIMO group identifiers of the MU-MIMO groups to which each terminal in the group identified by the group identifier belongs in sequence;

Sending the data frame includes: sending the data frame to each terminal in the target MU-MIMO group, where the data in the data frame is based on the current network device and each terminal in the target MU-MIMO group are placed in a pre-agreed order, wherein the MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

With reference to the sixth aspect, in a third possible implementation manner, the current network device and the multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one terminal. One MU-MIMO group;

For any one of the multiple groups, if the terminals in the group belong to N MU-MIMO groups, each MU-MIMO group in the first N-1 MU-MIMO groups includes K in the group Terminal, the Nth MU-MIMO group includes M terminals in the group, and there are K*(N-1)+M terminals in the group, then in the group information, the information of each terminal belonging to the group is In the terminal identification sequence, the K terminals identified by the first K terminal identifications belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifications belong to the second MU-MIMO group, and so on. The M terminals identified by the last M terminal identifiers belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the terminal identifier of the first terminal in the target MU-MIMO group is the terminal identifier corresponding to the grouping identifier of the group to which the target MU-MIMO group belongs. the order in the sequence; or the sequence number of the target MU-MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, where the target MU-MIMO group is the MU-MIMO to which the target receiving terminal belongs MIMO group;

Sending a data frame to the target receiving terminal includes: sending the data frame to each terminal in the target MU-MIMO group, where data in the data frame is based on the network device and the target MU-MIMO The terminals in the group are placed in a pre-agreed order.

In combination with the sixth aspect, the first possible implementation manner of the sixth aspect, the second possible implementation manner of the sixth aspect, or the third possible implementation manner of the sixth aspect, in the fourth possible implementation manner , the target receiving terminal information is located in the physical layer signaling SIG of the data frame.

With reference to the fourth possible implementation manner of the sixth aspect, in a fifth possible implementation manner, the SIG of the data frame further includes resource information of physical layer resources allocated to the target receiving terminal.

With reference to the fifth possible implementation manner of the sixth aspect, in the sixth possible implementation manner, the current network device and the multiple terminals use orthogonal frequency division multiple access (OFDMA) for data transmission, and the resource The information includes: information of OFDMA subchannels.

With reference to the fifth possible implementation manner or the sixth possible implementation manner of the sixth aspect, in a seventh possible implementation manner, the current network device and the multiple terminals use MU-MIMO for data transmission , the resource information includes: space-time flow information.

With reference to the sixth aspect, or any one of the first possible implementation manner to the seventh possible implementation manner of the sixth aspect, in the eighth possible implementation manner, the method further includes:

Sending information about the validity period of the grouping information to the plurality of terminals.

With reference to the eighth possible implementation manner of the sixth aspect, in a ninth possible implementation manner, the information of the effective duration is carried through a dedicated field or a Duration field in the data frame.

In a seventh aspect, an embodiment of the present invention provides a data transmission method, including:

receiving grouping information sent by a network device, where the grouping information includes a terminal identification sequence, and the terminal identification sequence includes terminal identifications of multiple terminals scheduled by the network device in sequence;

determining the current terminal information, wherein the current terminal information is the order of the terminal identification of the current terminal in the terminal identification sequence in the grouping information;

Receive a data frame sent by the network device, where the data frame carries target receiving terminal information used to indicate the target receiving terminal to which the data frame is sent, wherein the target receiving terminal information is the grouping information, the the order of the terminal identification of the target receiving terminal in the terminal identification sequence;

If the current terminal information is the same as the target receiving terminal information, it is determined that the data frame includes the data sent to the current terminal, and the data sent to the current terminal is obtained from the data frame.

With reference to the seventh aspect, in a first possible implementation manner, the grouping information specifically includes: unit channel identifiers of each unit channel used by the multiple terminals, and corresponding to each unit channel identifier, including the use of sequential arrangement The terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

Receiving the data frame sent by the network device includes: on the current unit channel used by the current terminal, receiving the data frame sent by the network device;

The target receiving terminal information is specifically: in the grouping information, the terminal identifier of the target receiving terminal, the order in the terminal identifier sequence corresponding to the unit channel identifier of the unit channel used by the target receiving terminal.

With reference to the seventh aspect, in a second possible implementation manner, the network device and the multiple terminals perform data transmission in a multi-user multiple-input multiple-output (MU-MIMO) manner, and the multiple terminals belong to at least one MU- a MIMO group, where the terminal identification sequence includes sequentially arranged MU-MIMO group identifiers of the MU-MIMO groups to which the multiple terminals belong;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is in an order pre-agreed by the network device and each terminal in the target MU-MIMO group placing, the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

Obtaining the data sent to the current terminal from the data frame includes: obtaining the data sent to the current terminal from the data frame according to a sequence pre-agreed by the network device and the current terminal.

With reference to the seventh aspect, in a third possible implementation manner, the network device and the multiple terminals use MU-MIMO for data transmission, and the multiple terminals belong to N MU-MIMO groups, and the first N- Each MU-MIMO group in one MU-MIMO group includes K terminals among the multiple terminals, the Nth MU-MIMO group includes M terminals among the multiple terminals, and the multiple terminals The total number of terminals is K*(N-1)+M; in the grouping information, in the terminal identifier sequence of the multiple terminals, the K terminals identified by the first K terminal identifiers belong to the first MU- MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on, the M terminals identified by the last M terminal identifiers belong to the Nth MU-MIMO group; where K , M, N are positive integers, M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the target MU-MIMO group is in N MUs - the sequence number in the MIMO group, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is pre-agreed between the network device and each terminal in the target MU-MIMO group. placed in the order of;

Obtaining the data sent to the current terminal from the data frame includes: obtaining the data sent to the current terminal from the data frame in an order pre-agreed by the network device and the current terminal.

In conjunction with the seventh aspect, the first possible implementation manner of the seventh aspect, the second possible implementation manner of the seventh aspect, or the third possible implementation manner of the seventh aspect, in the fourth possible implementation manner , the target receiving terminal information is located in the physical layer signaling SIG of the data frame.

With reference to the fourth possible implementation manner of the seventh aspect, in a fifth possible implementation manner, the SIG of the data frame further includes resource information of physical layer resources allocated to the target receiving terminal.

With reference to the fifth possible implementation manner of the seventh aspect, in a sixth possible implementation manner, the network device and the multiple terminals use an orthogonal frequency division multiple access (OFDMA) manner for data transmission, and the resource information Including: OFDMA sub-channel information.

With reference to the fifth possible implementation manner or the sixth possible implementation manner of the seventh aspect, in the seventh possible implementation manner, the network device and the multiple terminals use MU-MIMO for data transmission, The resource information includes: space-time flow information.

With reference to the seventh aspect, or any one of the first possible implementation manner to the seventh possible implementation manner of the seventh aspect, in the eighth possible implementation manner, the method further includes:

Receive the information of the validity period of the packet information sent by the network device.

With reference to the eighth possible implementation manner of the seventh aspect, in a ninth possible implementation manner, receiving the information about the effective duration of the grouping information sent by the network device includes:

Receive the information of the effective duration carried by the network device through a dedicated field or a Duration field in a data frame.

In an eighth aspect, an embodiment of the present invention provides a data transmission method, including:

Receive grouping information sent by a network device, where the grouping information includes: a group identifier of each group of multiple groups that the network device divides the scheduled terminals into, and a group identifier corresponding to each group identifier, including a terminal identifier sequence , the terminal identification sequence includes the terminal identifications of each terminal in the grouping identified by the grouping identification arranged in sequence;

Determine the current group identifier and current terminal information; wherein, the current group identifier is: in the group information, the group identifier corresponding to the terminal identifier of the current terminal; the current terminal information is: in the group information, the The order of the terminal identification of the current terminal in the terminal identification sequence corresponding to the current group identification;

Receive a data frame sent by the network device, where the data frame carries a target group identifier and target receiving terminal information; wherein, the target group identifier is the group identifier of the group to which the data frame is sent to the target receiving terminal; the The target receiving terminal information is the order of the terminal identifier of the target receiving terminal in the terminal identifier sequence corresponding to the group identifier of the group to which the target receiving terminal belongs;

If the current group identifier is the same as the target group identifier, and the current terminal information is the same as the target receiving terminal information, it is determined that the data frame includes the data sent to the current terminal, and the data is sent from the data frame. The data sent to the current terminal is obtained from the data frame.

With reference to the eighth aspect, in a first possible implementation manner, in the multiple groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping The information specifically includes: a grouping identifier of each grouping, a grouping identifier corresponding to each grouping, a unit channel identifier of each unit channel used by each terminal included in the grouping identified by the grouping identifier, and a channel identifier corresponding to each grouping identifier. Each unit channel identification, including in the grouping identified by the grouping identification arranged in sequence, uses the terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

The target receiving terminal information is specifically: in the grouping information, the terminal identifier of the target receiving terminal corresponds to the unit channel identifier of the target unit channel used by the target receiving terminal in the group to which the target receiving terminal belongs. the order in the terminal identification sequence;

Receiving the data frame sent by the network device includes: receiving the data frame sent by the network device on the current unit channel used by the current terminal.

With reference to the eighth aspect, in a second possible implementation manner, the network device and the multiple terminals use a multi-user multiple-input multiple-output (MU-MIMO) mode for data transmission, and each of the multiple groups is within each group. Each terminal belonging to at least one MU-MIMO group corresponds to each group identifier, and the terminal identifier sequence includes the MU-MIMO group identifier of the MU-MIMO group to which each terminal in the group identified by the group identifier belongs in sequence. ;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is in an order pre-agreed by the network device and each terminal in the target MU-MIMO group placing, the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

Obtaining the data sent to the current terminal from the data frame includes: obtaining the data sent to the current terminal from the data frame in an order pre-agreed by the network device and the current terminal.

With reference to the eighth aspect, in a third possible implementation manner, the network device and the multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group;

For any one of the multiple groups, if the terminals in the group belong to N MU-MIMO groups, each MU-MIMO group in the first N-1 MU-MIMO groups includes K in the group terminal, the Nth MU-MIMO group includes M terminals in the group, and there are K*(N-1)+M terminals in the group, then in the group information, the terminals of each terminal belonging to the group are In the identification sequence, the K terminals identified by the first K terminal identifiers belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on. The M terminals identified by the M terminal identifiers belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the terminal identifier of the first terminal in the target MU-MIMO group is the terminal identifier corresponding to the grouping identifier of the group to which the target MU-MIMO group belongs. the order in the sequence; or the sequence number of the target MU-MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, where the target MU-MIMO group is the MU-MIMO to which the target receiving terminal belongs MIMO group;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is pre-agreed between the network device and each terminal in the target MU-MIMO group. the order of placement;

Obtaining the data sent to the current terminal from the data frame includes: obtaining the data sent to the current terminal from the data frame in an order pre-agreed by the network device and the current terminal.

With reference to the eighth aspect, the first possible implementation manner of the eighth aspect, the second possible implementation manner of the eighth aspect, or the third possible implementation manner of the eighth aspect, in the fourth possible implementation manner , the target receiving terminal information is located in the physical layer signaling SIG of the data frame.

With reference to the fourth possible implementation manner of the eighth aspect, in a fifth possible implementation manner, the SIG of the data frame further includes resource information of physical layer resources allocated to the target receiving terminal.

With reference to the fifth possible implementation manner of the eighth aspect, in a sixth possible implementation manner, the network device and the multiple terminals use an orthogonal frequency division multiple access (OFDMA) manner for data transmission, and the resource information Including: OFDMA sub-channel information.

With reference to the fifth possible implementation manner or the sixth possible implementation manner of the eighth aspect, in a seventh possible implementation manner, the network device and the multiple terminals use MU-MIMO for data transmission, The resource information includes: space-time flow information.

With reference to the eighth aspect, or any one of the first possible implementation manner to the seventh possible implementation manner of the eighth aspect, in the eighth possible implementation manner, the method further includes:

Receive the information of the validity period of the packet information sent by the network device.

With reference to the eighth possible implementation manner of the eighth aspect, in a ninth possible implementation manner, receiving the information about the valid duration of the grouping information sent by the network device includes:

Receive the information of the effective duration carried by the network device through a dedicated field or a Duration field in a data frame.

In this embodiment of the present invention, the network device sends to the scheduled multiple terminals grouping information in which the multiple terminals are divided into one group or multiple groups, if divided into one group, the grouping information includes the terminal identification sequence of the multiple terminals; Divided into a plurality of groups, the group information includes a group identifier of each group, and corresponding to each group identifier, the group identifier includes a terminal identifier sequence of each terminal included in the identified group.

The network device sends a data frame to the target receiving terminal that communicates with the network device among the multiple terminals, and corresponds to the sent data frame. If divided into a group, the terminal identifier used to indicate the target receiving terminal is included in the grouping information. The target receiving terminal information of the order in the terminal identification sequence in the sequence is sent to the target receiving terminal; if it is divided into multiple groups, the target grouping identifier and the target receiving terminal information are sent to the target receiving terminal, indicating that the target receiving terminal data frame is sent to the target receiving terminal. Receiving terminal; wherein, the target group identifier is the group identifier of the group to which the target receiving terminal belongs, the target receiving terminal information is in the group information, the terminal identifier of the target receiving terminal, the terminal corresponding to the group identifier of the group to which the target receiving terminal belongs Identifies the order in the sequence.

Based on the above solution, it is realized that the terminal is identified by the sequence information of the terminal, thereby avoiding the use of terminal identification occupying more information bits, so that the capacity of the existing signaling information field can meet the communication requirements of multiple terminals.

Description of drawings

Figure 1 is a schematic diagram of the IEEE802.11ac frame structure;

2 is a schematic structural diagram of a data transmission system provided by Embodiment 1 of the present invention;

3a to 3d are schematic diagrams of grouping information when a network device divides a plurality of scheduled terminals into a group according to Embodiment 1 of the present invention;

4a to 4d are schematic diagrams of grouping information when a network device divides multiple scheduled terminals into multiple groups according to Embodiment 1 of the present invention;

FIG. 5 is a flowchart of a method on the AP side according to Embodiment 2 of the present invention;

FIG. 6 is a flowchart of a method on the STA side according to Embodiment 2 of the present invention;

7 is a schematic diagram of a method for transmitting packet information and data frames between an AP and a STA in Embodiment 2 of the present invention;

8 is a schematic diagram of the correspondence between grouping information and unit channels in Embodiment 3 of the present invention;

9 is a schematic structural diagram of a network device according to Embodiment 5 of the present invention;

FIG. 10 is a schematic structural diagram of a network device according to Embodiment 6 of the present invention;

11 is a schematic structural diagram of a network device according to Embodiment 7 of the present invention;

12 is a schematic structural diagram of a network device according to Embodiment 8 of the present invention;

13 is a schematic structural diagram of a terminal according to Embodiment 9 of the present invention;

FIG. 14 is a schematic structural diagram of a terminal according to Embodiment 10 of the present invention;

FIG. 15 is a schematic structural diagram of a terminal according to Embodiment 11 of the present invention;

16 is a schematic structural diagram of a terminal according to Embodiment 12 of the present invention;

17 is a flowchart of a data transmission method provided by Embodiment 13 of the present invention;

18 is a flowchart of a data transmission method provided in Embodiment 14 of the present invention;

19 is a flowchart of a data transmission method provided in Embodiment 15 of the present invention;

FIG. 20 is a flowchart of a data transmission method according to Embodiment 16 of the present invention.

Detailed ways

Embodiments of the present invention provide a network device, a terminal and a data transmission method to solve the problem that the capacity of the existing signaling information field cannot meet the communication requirements of multiple terminals when the network device communicates with multiple terminals in a communication system.

In the network device provided by the embodiment of the present invention, the first sending unit is configured to send grouping information to a plurality of terminals scheduled by the network device, where the grouping information includes a terminal identification sequence, and the terminal identification sequence includes the terminal identifications of the multiple terminals arranged in sequence The second sending unit is used for sending data frames, the data frames carry target receiving terminal information for indicating the target receiving terminal, wherein the target receiving terminal information is the order of the terminal identification of the target receiving terminal in the terminal identification sequence.

By sending the target receiving terminal information indicating the order of the terminal identification of the target receiving terminal in the terminal identification sequence in the pre-sent packet information, it indicates that the data frame of the target receiving terminal is sent to the target receiving terminal, so as to avoid the use of occupying more space. Multi-information bit terminal identification, so that the capacity of the existing signaling information field can meet the communication requirements of multiple terminals.

In another network device provided in this embodiment of the present invention, a first sending unit is configured to send grouping information to multiple terminals scheduled by the network device, where the grouping information includes: the network device sends the multiple terminals to The group identification of each grouping of the divided multiple groups, and corresponding to each group identification, including a terminal identification sequence, and the terminal identification sequence includes the terminal identification of each terminal in the grouping identified by the group identification arranged in sequence; a second sending unit, configured to send a data frame, where the data frame carries a target group identifier and target receiving terminal information used to indicate a target receiving terminal; wherein, the target group identifier is a group of a group to which the target receiving terminal belongs The target receiving terminal information is: in the group information, the terminal identifier of the target receiving terminal is in the sequence of the terminal identifier corresponding to the group identifier of the group to which the target receiving terminal belongs.

By sending the above target packet identifier and target receiving terminal information, it is indicated that the data frame of the target receiving terminal is sent to the target receiving terminal, so as to avoid using the terminal identifier that occupies more information bits, so that the capacity of the existing signaling information field can be Meet multiple terminal communication requirements.

Hereinafter, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, the data transmission system provided by the embodiment of the present invention is introduced through the first embodiment; then, the method for grouping terminals and identifying the terminals is illustrated through the second embodiment and the third embodiment respectively; then, through the fifth embodiment to the eighth embodiment The four kinds of network devices provided by the embodiments of the present invention are introduced; then, the four kinds of terminals provided by the embodiments of the present invention are introduced respectively through the ninth to the twelfth embodiment; finally, the present invention is introduced through the thirteenth to the sixteenth embodiment. Four data transmission methods provided by the embodiment.

[Example 1]

FIG. 2 is a schematic structural diagram of a data transmission system according to Embodiment 1 of the present invention. As shown in Figure 2, the system includes: a network device 201 and a terminal 202;

Wherein, the network device 201 is used to divide the scheduled multiple terminals including the terminal 202 into one group or multiple groups; below, two situations of distinguishing one group and multiple groups are described respectively:

1. A group situation

The network device 201 is specifically configured to: send grouping information to the multiple terminals, where the grouping information includes a terminal identification sequence, and the terminal identification sequence includes the terminal identifications of the multiple terminals arranged in sequence; Indicate target receiving terminal information of the target receiving terminal, wherein the target receiving terminal information is the order of the terminal identification of the target receiving terminal in the above-mentioned terminal identification sequence;

The terminal 202 is used for: receiving the above-mentioned grouping information sent by the network device 201, and determining the current terminal information, wherein the current terminal information is the order of the terminal identification of the terminal 202 in the above-mentioned terminal identification sequence in the grouping information; and receiving the network equipment In the data frame sent by 201, if the current terminal information is the same as the target receiving terminal information carried in the data frame, it is determined that the data frame includes the data sent to the terminal 202, and the data sent to the terminal 202 is obtained from the data frame. .

The target receiving terminal information may be sent in a corresponding data frame, or may be sent independently of the data frame. When the target receiving terminal information is sent independently of the data frame, optionally, the target receiving terminal information may be sent before the data frame is sent, and the data frame corresponding to the target receiving terminal information can be identified, for example: when sending the target receiving terminal In the case of information, it carries the frame number of the data frame corresponding to the target receiving terminal information.

2. The case of multiple groups

The network device 201 is specifically configured to: send group information to the scheduled multiple terminals, where the group information includes a group identifier of each group of the multiple groups into which the multiple terminals are divided by the network device 201, and a group identifier corresponding to each group. , including the terminal identification sequence, the terminal identification sequence including the terminal identification sequence of each terminal included in the grouping identified by the grouping identification in sequence; sending a data frame, the data frame carries the target grouping identification and the target receiving terminal information and uses In the target receiving terminal information indicating the target receiving terminal, the target group identifier is the group identifier of the group to which the target receiving terminal belongs, and the target receiving terminal information is the terminal identifier of the target receiving terminal in the group information. The order in the terminal identification sequence corresponding to the grouping identification of the grouping.

The terminal 202 is used to: receive the grouping information sent by the network device 201; determine the current grouping identifier and the current terminal information, wherein the current grouping identifier is: in the above-mentioned grouping information, the terminal identifier of the terminal 202 corresponds to the grouping identifier, and the current terminal information is: : in this grouping information, the order of the terminal identification of the terminal 202 in the terminal identification sequence corresponding to the current grouping identification; receiving the above-mentioned data frame sent by the network device 201, if it is determined that the current grouping identification and the target grouping identification carried in the data frame are If the current terminal information is the same as the target receiving terminal information carried in the data frame, it is determined that the data frame includes the data sent to the terminal 202, and the data sent to the terminal 202 is obtained from the data frame.

Wherein, when the network device 201 and the multiple terminals use OFDMA for data transmission, the network device 201 divides the multiple terminals into multiple groups into OFDMA packets.

Wherein, the target group identifier and the target receiving terminal information may be placed in the corresponding data frame and sent, or may be sent independently of the data frame. When it is sent independently of the data frame, optionally, the target group identifier and the target receiving terminal information can be sent before the data frame is sent, and the data frame corresponding to the target group identifier and the target receiving terminal information can be identified, for example: When sending the target group identification and target receiving terminal information, the frame numbers of their corresponding data frames are carried.

In the following, the case of one group and the case of a plurality of groups are respectively described. For these two situations, there are multiple optional implementation manners in actual implementation.

For the sake of clarity of description, several possible implementations of a group are listed in Table 1 below, and several possible implementations of multiple groups are listed in Table 2 below.

It should be noted that the specific implementation methods are not limited to the several methods listed in Table 1 and Table 2. In fact, as long as the terminal can be identified by the order of the terminal identifier of the terminal in the grouping information, the terminal can identify the The method of its own data frame is applicable to the present invention.

Table 1. Several possible implementations of a grouping

Table 2. Several possible implementations of multiple groups

In Tables 1 and 2, and other descriptions in the embodiments of the present invention, the target unit channel is the unit channel used by the target receiving terminal, and the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

Below, various implementations in Table 1 and Table 2 are described in detail.

1. A group, implementation method 1

In this manner, the grouping information includes terminal identification sequences of multiple terminals scheduled by the network device 201 . For example, the grouping information may be shown in FIG. 3 a , where STA_ID_1 , STA_ID_2 , STA_ID_3 , STA_ID_4 , STA_ID_5 , and STA_ID_6 are terminal identification sequences of multiple terminals scheduled by the network device 201 .

Wherein, the target receiving terminal information is: the order of the terminal identification of the target receiving terminal in the above-mentioned terminal identification sequence, for example: in FIG. 3a, the target receiving terminal information is that the terminal identification of the target receiving terminal is in the above-mentioned terminal identification sequence STA_ID_1, STA_ID_2, STA_ID_3 , STA_ID_4, STA_ID_5, and STA_ID_6 in the order.

For example, if it is pre-specified that the maximum number of terminals scheduled by the network device 201 is 8, 3 bits are required to indicate the order of the terminal identifier of the target receiving terminal in the above terminal identifier sequence. For STA_ID_3 in Figure 3a, the target receiving terminal information can be expressed as "010", indicating that in the grouping information, STA_ID_3 is ranked third in the terminal identification sequence of each terminal (for STA_ID_1 in Figure 3a, the target receiving terminal information can be expressed as It is "000". Since each terminal only needs 3 bits, it saves 45 bits compared to using a 48-bit MAC address to identify the target receiving terminal.

Since the terminal 202 knows the order of its own terminal identification in the above terminal identification sequence from the grouping information in advance, after receiving the target receiving terminal information, if the current terminal information is the same as the target receiving terminal information, the terminal 202 determines the data The frame includes data addressed to itself.

2. One group, implementation method 2

In this mode, the grouping information specifically includes: unit channel identifiers of each unit channel used by multiple terminals scheduled by the network device 201, and corresponding to each unit channel identifier, including each terminal using the unit channel identified by the unit channel identifier terminal identification sequence. For example, the grouping information can be shown in Figure 3b, where CH_ID_1, CH_ID_2 and CH_ID_3 are the unit channel identifiers of each unit channel; STA_ID_1, STA_ID_2, STA_ID_3 are the terminal identifier sequences of each terminal using the unit channel identified by CH_ID_1, STA_ID_4, STA_ID_5 is the terminal identification sequence of each terminal using the unit channel identified by CH_ID_2, and STA_ID_6 is the terminal identification of the terminal using the unit channel identified by CH_ID_3.

The grouping information needs to reflect the correspondence between the unit channel identifier and the terminal identifier. For example, as shown in Figure 3b, the terminal identifier of the terminal is located behind the unit channel identifier of the unit channel used by the terminal. Other ways of representing the corresponding relationship may also include: placing the terminal identifier of the terminal in front of the unit channel identifier of the unit channel used by the terminal, etc. The optional methods are not limited to the two methods listed here, as long as the unit channel can be represented. The corresponding relationship between the identification and the terminal identification, and the terminal identifications can be arranged in order.

The target receiving terminal information is specifically: in the foregoing grouping information, the order of the terminal identifiers of the target receiving terminals in the terminal identifier sequence corresponding to the unit channel identifiers of the target unit channel.

For example, if the maximum number of terminals using each unit channel is pre-specified as 8, 3 bits are required to indicate the order of the terminal identifier of the target receiving terminal in the terminal identifier sequence corresponding to the unit channel identifier of the target unit channel. For STA_ID_3 in Figure 3b , the target receiving terminal information can be expressed as "010", indicating that in the grouping information, STA_ID_3 is ranked the third in the terminal identification sequence of each terminal using the unit channel identified by CH_ID_1 (for STA_ID_1 in Figure 3b, the target receiving terminal information It can be represented as "000", and for STA_ID_5 in Fig. 3b, the target receiving terminal information can be represented as "001"). Since each terminal only needs 3 bits, 45 bits are saved compared to using a 48-bit MAC address to identify the target receiving terminal.

When sending the data frame, the network device 201 places the data frame on the target unit channel and sends it to the target receiving terminal. If the data frame includes the data sent to the terminal 202, the network device 201 places the data frame in the data frame used by the terminal 202. It is sent to the terminal 202 on the unit channel.

Since the terminal 202 has previously learned the unit channel identifier of the unit channel used by the terminal 202 from the grouping information, the terminal 202 can receive the data frame on the unit channel used by the terminal 202; The order of the terminal identification in the corresponding terminal identification sequence using the unit channel identification of the unit channel used by itself, then after the terminal 202 receives the data frame, if it is determined that the current terminal information and the target receiving terminal information are the same, then determine the data The frame includes data addressed to itself.

3, a group, the realization of three

In this mode, in the data transmission system provided by the embodiment of the present invention, a multi-user multiple input multiple output (MU-MIMO) mode is used for data transmission between the network device 201 and multiple scheduled terminals. The multiple terminals scheduled by the network device 201 belong to at least one MU-MIMO group, and the terminal identifier is the MU-MIMO group identifier of the MU-MIMO group to which the terminal belongs. The MU-MIMO group refers to a group formed by multiple target objects of one MU-MIMO data transmission within the same frequency band bandwidth. The target object is a network device or a terminal. The concept of the MU-MIMO group is applicable to all MU-MIMO groups in the embodiments of the present invention.

For example, the grouping information may be as shown in FIG. 3c, where MGrp_ID_1 to MGrp_ID_4 are the identifiers of each MU-MIMO group.

Since the terminal 202 knows in advance the MU-MIMO group to which it belongs, and the MU-MIMO group identifier of the MU-MIMO group to which it belongs, when the terminal 202 receives the MU-MIMO group identifier sequence in the grouping information, the terminal 202 can determine In the grouping information, the order of the MU-MIMO group identifier of the MU-MIMO group to which it belongs is in the MU-MIMO group identifier sequence.

The terminal 202 receives the data frame sent by the network device 201, and the data frame carries the target receiving terminal information. If it is determined that the order indicated by the target receiving terminal information is the same as the order of the group identifier of the MU-MIMO group to which it belongs in the grouping information in the MU-MIMO group identifier sequence, it is determined that the data frame includes the data sent to itself.

Further, the data frame is sent by the network device 201 to each terminal in the MU-MIMO group to which the terminal 202 belongs, and the data in the data frame is based on each terminal in the MU-MIMO group to which the network device 201 and the terminal 202 belong. If they are placed in a pre-agreed order, the terminal 202 can acquire the data sent to itself from the data frame according to the pre-agreed sequence.

4. One grouping, implementation four

In this mode, in the data transmission system provided by the embodiment of the present invention, the network device 201 and the multiple terminals scheduled by the network device 201 use the MU-MIMO mode to transmit data. When the multiple terminals scheduled by the network device 201 are divided into MU-MIMO groups , following the following rules:

The multiple terminals belong to N MU-MIMO groups, each MU-MIMO group in the first N-1 MU-MIMO groups includes K terminals among the multiple terminals, and the Nth MU-MIMO group includes the M terminals among multiple terminals, the total number of the multiple terminals is K*(N-1)+M; wherein K, M, and N are positive integers, and M is not greater than K.

Referring to Figure 3d, in the grouping information, the correspondence between the terminal identifier and the MU-MIMO group identifier of the MU-MIMO group satisfies the following rules:

In the grouping information, in the terminal identification sequence of the multiple terminals, the K terminals identified by the first K terminal identifiers (STA_ID_1 to STA_ID_K) belong to the first MU-MIMO group, and the next K terminal identifiers (STA_ID_K+1 to STA_ID_K) belong to the first MU-MIMO group. The K terminals identified by STA_ID_2K) belong to the second MU-MIMO group, and so on, the last M terminal identifiers (STA_ID_(N-1)K+1～STA_ID_(N-1)K+M) The M terminals belong to the Nth MU-MIMO group.

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identifiers of the first terminal in the target MU-MIMO group in the terminal identifier sequence of the multiple terminals.

Referring to FIG. 3d, if the target receiving terminal is the second terminal in the second MU-MIMO group, when the network device 201 sends the data frame to the target receiving terminal, it sends the data frame to the second MU-MIMO group to which the target receiving terminal belongs. If each terminal in the terminal sends a data frame, the terminal identifier of the target receiving terminal is STA_ID_K+2, the MU-MIMO group to which the target receiving terminal belongs is the second MU-MIMO group, and the first terminal in the MU-MIMO group has a If the terminal identifier is STA_ID_K+1, the target receiving terminal information is used to indicate the order of STA_ID_K+1 in the terminal identifier sequence of the multiple terminals.

A further example is as follows: the network device 201 schedules 10 terminals, and in the grouping information, the terminals identified by the first four terminal identifiers belong to the first MU-MIMO group, and the terminals identified by the next four terminal identifiers belong to the second MU-MIMO group. - MIMO group, the terminal identified by the last two terminal identifiers belongs to the third MU-MIMO group. The target receiving terminal is the second terminal in the second MU-MIMO group, that is, the terminal identifier of the target receiving terminal is ranked as 6 in the terminal identifier sequence of each terminal in the grouping information. If the terminal 202 is the target receiving terminal, after receiving the grouping information, the terminal 202 determines that its terminal identifier is ranked as 6 in the grouping information, and the terminal 202 knows in advance that there are 4 terminals in a MU-MIMO group, then it can determine It belongs to the second MU-MIMO group, and the terminal identifier of the first terminal in the MU-MIMO group is ranked 5 in the grouping information. If the target receiving terminal information received by the terminal 202 indicates that the terminal identifier of the first terminal in the target MU-MIMO group is ranked as 5 in the terminal identifier sequence of multiple terminals, the terminal 202 determines that the data frame includes the data sent to itself. The data.

If it is pre-specified that the maximum number of terminal identifiers of multiple terminals scheduled by the network device 201 is 10, a total of 4 bits are required to represent the target receiving terminal information. For terminal 202, its target receiving terminal information is the order of the terminal identifier of the first terminal in the MU-MIMO group to which it belongs in the terminal identifier sequence of each terminal in the grouping information, and the terminal identifier order is 5, then "0101 "Represents target receiving terminal information (here "0000" represents the order of the terminal identifier of the first terminal in the first MU-MIMO group in the terminal identifier sequence of multiple terminals, and "1001" represents the third MU-MIMO the order of the terminal identification of the first terminal in the group in the sequence of terminal identifications of the plurality of terminals). Compared with the 48bit MAC address, 44bit can be saved.

In this mode, after receiving the target receiving terminal information, if the terminal 202 determines the order of the terminal identifier of the first terminal in the MU-MIMO group to which it belongs in the terminal identifier sequence of the multiple terminals, it is different from that of the target receiving terminal. If the order indicated by the information is the same, it is determined that the data frame includes the data sent to itself, and the data sent to itself is read from the data frame according to the sequence pre-agreed with the network device 201 .

5, a group, the realization of five

In this manner, the data transmission system provided by the embodiment of the present invention adopts the MU-MIMO technology. The rules for dividing the MU-MIMO groups of multiple terminals scheduled by the network device 201 are the same as the above-mentioned 4. One grouping, the rules for implementation mode 4; in the grouping information, the difference between the terminal identifier and the MU-MIMO group identifier of the MU-MIMO group is The rules that the corresponding relationship satisfies are also the same as those of the above-mentioned 4. One grouping, and the rules of the fourth implementation mode, and the repetition will not be repeated.

Different from the above 4. One grouping, the fourth implementation mode is that in this mode, the target receiving terminal information is: in the grouping information, the sequence number of the target MU-MIMO group in the N MU-MIMO groups.

Referring to FIG. 3d, still taking the terminal 202 as the second terminal in the second MU-MIMO group as an example, the data frame sent by the network device 201 to the terminal 202 is also sent to the second MU-MIMO to which the terminal 202 belongs. For each terminal in the group, the target receiving terminal information is the sequence number of the second MU-MIMO group in the N MU-MIMO groups. If it is pre-specified that the maximum number of MU-MIMO groups to which multiple terminals scheduled by the network device 201 belong is 8, 3 bits are required to indicate the target receiving terminal information, for example, "001" is used to indicate the target receiving terminal information (in this case, "000" Indicates the sequence number of the first MU-MIMO group in the N MU-MIMO groups, and "101" represents the sequence number of the sixth MU-MIMO group in the N MU-MIMO groups).

In this manner, after receiving the target receiving terminal information, if the terminal 202 determines that the sequence number of the MU-MIMO group to which it belongs in each MU-MIMO group is the same as the order indicated by the target receiving terminal information, it determines that the data frame contains It includes the data sent to itself, and reads the data sent to itself from the data frame according to the sequence pre-agreed with the network device 201 .

6. Multiple groups, implementation method 1

In this mode, the network device 201 divides the scheduled multiple terminals into multiple groups, and sends the group information of the multiple groups to the multiple terminals, where the group information includes the group identifier of each group, and the information corresponding to each group. The identification includes a terminal identification sequence, where the terminal identification sequence includes the terminal identifications of each terminal in the group identified by the group identification arranged in sequence.

For example, the grouping information may be shown in Figure 4a, where GRP_ID_1 and GRP_ID_2 are group identifiers; STA_ID_1, STA_ID_2, and STA_ID_3 are the terminal identifier sequences corresponding to the group identifier GRP_ID_1, and STA_ID_4 and STA_ID_5 are the terminal identifier sequences corresponding to the group identifier GRP_ID_2.

The network device 201 sends a data frame to the terminal 202, where the data frame carries the group identifier of the group to which the terminal 202 belongs, and the target receiving terminal information, where the target receiving terminal information is the terminal identifier of the terminal 202 in the group identifier of the group to which the terminal 202 belongs. The order in the corresponding terminal identification sequence, the terminal 202 can determine that the data frame includes the data sent to itself according to the received packet identification and the received target receiving terminal information.

For example: if the maximum number of groups to which multiple terminals scheduled by the network device 201 belong is 8, 3 bits are required to represent the target group identifier; if the maximum number of terminals that belong to the same group is 16, 4 bits are required to represent Target receiving terminal information, then a total of 7 bits are needed to identify the target receiving terminal, which saves 41 bits compared to the 48-bit MAC address.

7. Multiple groups, implementation method 2

In this manner, the network device 201 divides the scheduled terminals into multiple groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group. The grouping information specifically includes: a grouping identifier of each grouping, a unit channel identifier corresponding to each grouping identifier, a unit channel identifier of each unit channel used by each terminal included in the grouping identified by the grouping identifier, and a corresponding unit channel identifier corresponding to each grouping identifier. Each unit channel identifier of , including the sequentially arranged groups identified by the group identifier, use the terminal identifier sequence of each terminal of the unit channel identified by the unit channel identifier.

For example, the grouping information may be shown in Figure 4b, wherein GRP_ID_1 and GRP_ID_2 are group identifiers; CH_ID_1, CH_ID_2, CH_ID_3 and CH_ID_4 are unit channel identifiers of each unit channel. STA_ID_1, STA_ID_2, and STA_ID_3 are the terminal identification sequences of each terminal using the unit channel identified by CH_ID_1 in the group identified by GRP_ID_1; Terminal identification sequence; STA_ID_6 and STA_ID_7 are the terminal identification sequences of each terminal using the unit channel identified by CH_ID_3 in the group identified by GRP_ID_2; STA_ID_8 is the terminal identified by GRP_ID_2 and the terminal using the unit channel identified by CH_ID_4 logo.

The grouping information needs to reflect the correspondence between the grouping identifier, the unit channel identifier and the terminal identifier. As shown in Figure 4b, the terminal identifier of the terminal is located behind the unit channel identifier of the unit channel used by the terminal, and the unit channel identifier is located behind the corresponding grouping identifier; or the terminal identifier of the terminal is located in the grouping identifier of the grouping to which the terminal belongs. The group identifier is located behind the unit channel identifier of the unit channel used by each terminal in the group. Other ways of expressing the corresponding relationship may further include: placing the terminal identifier of the terminal in front of the unit channel identifier of the unit channel used by the terminal, placing the unit channel identifier in front of the corresponding group identifier, and the like. The optional manners are not limited to the two manners listed here, as long as the correspondence between the group identifier, the unit channel identifier and the terminal identifier can be represented, and the terminal identifiers can be arranged in order.

The target receiving terminal information is specifically: in the group information, the terminal identifier of the target receiving terminal, and the order in the terminal identifier sequence corresponding to the unit channel identifier of the target unit channel used by the target receiving terminal in the group to which the target receiving terminal belongs.

The network device 201 sends the data frame to the target receiving terminal, and sends the target packet identifier and the target receiving terminal information to the target receiving terminal. If it is pre-specified that the maximum number of groups to which multiple terminals scheduled by the network device 201 belong is 8, 3 bits are required to represent the target group identifier; if it is pre-specified in the same group, the maximum number of terminals using the same unit channel is 10 , then 4 bits are needed to represent the target receiving terminal information, then a total of 7 bits are needed to identify the target receiving terminal, which saves 41 bits compared to the 48-bit MAC address.

When sending the data frame, the network device 201 places the data frame on the target unit channel and sends it to the target receiving terminal. If the data frame is sent to the terminal 202, the network device 201 places the data frame in the unit used by the terminal 202. sent to the terminal 202 on the channel.

Since the terminal 202 has previously learned the unit channel identifier of the unit channel used by the terminal 202 from the grouping information, the terminal 202 can receive the data frame on the unit channel used by the terminal 202; The grouping identification of the grouping to which it belongs, and the terminal identification of its own, the order in the terminal identification sequence corresponding to the unit channel identification of the unit channel used by itself in the grouping to which it belongs, then the terminal 202 receives the target grouping identification and the target receiving terminal. After the information is obtained, if it is determined that the group identifier of the group to which the self belongs is the same as the target group identifier, and the current terminal information is the same as the target receiving terminal information, it can be determined that the data frame includes the data sent to the self.

8. Multiple groups, implementation method three

In this mode, in the data transmission system provided by the embodiment of the present invention, data transmission is performed between the network device 201 and multiple scheduled terminals in a MU-MIMO manner. The network device 201 divides the scheduled terminals into multiple groups, each terminal in each group belongs to at least one MU-MIMO group, and the terminal identifier is the MU-MIMO group identifier of the MU-MIMO group to which the terminal belongs.

For example, the grouping information may be shown in Figure 4c, where GRP_ID_1 and GRP_ID_2 are group identifiers, MGrp_ID_1, MGrp_ID_2, and MGrp_ID_3 are the MU-MIMO group identifier sequence of the MU-MIMO group to which each terminal belongs in the group identified by the group identifier GRP_ID_1, and MGrp_ID_4 It is the MU-MIMO group identifier of the MU-MIMO group to which each terminal belongs in the group identified by the group identifier GRP_ID_2.

Since the terminal 202 knows in advance the MU-MIMO group to which it belongs, and the MU-MIMO group identifier of the MU-MIMO group to which it belongs, the terminal 202 is receiving grouping information, which includes the grouping identifier of each group, and the corresponding grouping information. When each group identifier includes the MU-MIMO group identifier sequence of the MU-MIMO group to which each terminal included in the group identified by the group identifier belongs, the terminal 202 may determine the MU-MIMO of the MU-MIMO group to which it belongs. The group identifier corresponding to the group identifier, that is, the group identifier of the group to which it belongs, and the order of the MU-MIMO group identifier of the MU-MIMO group to which it belongs in the MU-MIMO group identifier sequence corresponding to the group identifier in the grouping information.

After the terminal 202 receives the data frame sent by the network device 201, and receives the target group identifier and the target receiving terminal information, if it is determined that the target group identifier is the same as the group identifier of the group to which it belongs, and in the group information, the MU-MIMO group to which it belongs is determined. The order of the MU-MIMO group identifier in the MU-MIMO group identifier sequence corresponding to the group identifier is the same as the order indicated by the target receiving terminal information, then it is determined that the data frame includes the data sent to itself.

If it is pre-specified that the maximum number of groups to which multiple terminals scheduled by the network device 201 belong is 8, 3 bits are required to represent the target group identifier; if it is pre-specified in the same group, the maximum number of MU-MIMO groups to which each terminal belongs is 4, 2 bits are needed to represent the target receiving terminal information, then a total of 6 bits are needed to identify the target receiving terminal, which saves 42 bits compared to the 48-bit MAC address.

Further, the data frame is sent by the network device 201 to each terminal in the MU-MIMO group to which the terminal 202 belongs, and the data in the data frame is based on each terminal in the MU-MIMO group to which the network device 201 and the terminal 202 belong. If they are placed in a pre-agreed order, the terminal 202 can acquire the data sent to itself from the data frame according to the pre-agreed sequence.

9. Multiple groups, implementation method four

In this mode, in the data transmission system provided by the embodiment of the present invention, data transmission is performed between the network device 201 and multiple scheduled terminals in a MU-MIMO manner. The network device 201 divides the scheduled multiple terminals into multiple Each terminal in each of the groups belongs to at least one MU-MIMO group.

For each group, each terminal scheduled by the network device 201 follows the following rules when dividing the MU-MIMO group:

If the terminals in the group belong to N MU-MIMO groups, each MU-MIMO group in the first N-1 MU-MIMO groups includes the K terminals in the group, and the Nth MU-MIMO group includes the M terminals in a group, there are K*(N-1)+M terminals in this group; wherein K, M, and N are positive integers, and M is not greater than K.

Referring to FIG. 4d , the grouping information includes a grouping identifier of each group, and corresponding to each grouping identifier, the terminal identifier sequence of each terminal included in the identified grouping by the grouping identifier. Corresponding to each group identification, the correspondence between the terminal identification of each terminal included in the group identified by the group identification and the MU-MIMO group identification of the MU-MIMO group satisfies the following rules:

In the terminal identifier sequence of each terminal belonging to the group identified by GRP_ID_1, the K terminals identified by the first K terminal identifiers (STA_ID_1 to STA_ID_K) belong to the first MU-MIMO group, and the next K terminal identifiers (STA_ID_K+1 The K terminals identified by ~STA_ID_2K) belong to the second MU-MIMO group, and so on, the last M terminal identifications (STA_ID_(N-1)K+1~STA_ID_(N-1)K+M) are identified The M terminals belong to the Nth MU-MIMO group. Similar rules are also satisfied for the correspondence between the terminal identifiers of each terminal belonging to the group identified by GPR_ID_2 and the MU-MIMO group identifier of the MU-MIMO group, except that the number of MU-MIMO groups included in the group identified by GPR_ID_2 It may be different from that of GPR_ID_1, and the number of terminals included in the packet may also be different from that of GPR_ID_1.

The target receiving terminal information is specifically: in the grouping information, the order of the first terminal in the target MU-MIMO group in the terminal identification sequence corresponding to the grouping identification of the group to which the target MU-MIMO group belongs.

Referring to FIG. 4d, if the terminal 202 is the second terminal in the second MU-MIMO group in the group identified by GRP_ID_1, the network device 201 sends the data frame to the terminal 202 to the second terminal to which the terminal 202 belongs. Each terminal in the MU-MIMO group sends a data frame, the terminal identifier of the target receiving terminal is STA_ID_K+2, the MU-MIMO group to which the target receiving terminal belongs is the second MU-MIMO group in the group identified by GRP_ID_1, and the MU-MIMO group - The terminal identifier of the first terminal in the MIMO group is STA_ID_K+1, and the target receiving terminal information is used to indicate the order of STA_ID_K+1 in the terminal identifier sequence of each terminal in the group identified by GRP_ID_1.

If 9 terminals among the multiple terminals scheduled by the network device 201 belong to the group identified by GRP_ID_1, in the grouping information, the terminals identified by the first four terminal identifiers belong to the first MU-MIMO group, and the next four terminal identifiers belong to the first MU-MIMO group. The identified terminal belongs to the second MU-MIMO group, and the terminal identified by the last two terminal identifications belongs to the third MU-MIMO group. The terminal 202 is the second terminal in the second MU-MIMO group, that is, the terminal identifier of the terminal 202 is ranked as 6 in the terminal identifier sequence of each terminal in the group in the grouping information. After receiving the grouping information, the terminal 202 determines that in the grouping information, its own terminal identification is ranked as 6 in the terminal identification sequence of each terminal in the group to which it belongs, and the terminal 202 knows in advance that there are four in one MU-MIMO group. The terminal can determine that it belongs to the second MU-MIMO group of the group, and the terminal identifier of the first terminal in the MU-MIMO group is ranked 5 in the grouping information.

If the maximum number of groups to which multiple terminals scheduled by the network device 201 belong is pre-specified as 8, then 3 bits are required to represent the target group identifier; if the pre-specified maximum number of terminals included in a group is 10, then a total of 4 bits are required to represent The target receives terminal information. For terminal 202, its target receiving terminal information is the order of the terminal identifier of the first terminal in the MU-MIMO group to which it belongs in the terminal identifier sequence of each terminal in the grouping information. 0101" indicates the target receiving terminal information (here "0000" indicates the order of the terminal identification of the first terminal in the first MU-MIMO group in the terminal identification sequence of each terminal in the group, "1001" indicates the third The order of the terminal identities of the first terminals in the MU-MIMO group in the sequence of terminal identities of the terminals in the group).

In this mode, the target group identifier and the target receiving terminal information are used to identify the terminal, which requires 3bit+4bit=7bit, which can save 41bits compared to the MAC address of 48bits.

In this manner, after the terminal 202 receives the target group identifier and the target receiving terminal information, if the target group identifier is the same as the group identifier of the group to which it belongs, and the terminal identifier of the first terminal in the MU-MIMO group to which it belongs The order in the terminal identification sequence corresponding to the group identification of the group to which the MU-MIMO group belongs is the same as the order indicated by the target receiving terminal information, then it is determined that the data frame includes the data sent to itself, and according to the pre- Read the data sent to itself from the data frame in the agreed order.

10. Multiple groups, implementation method five

In this mode, the data transmission system provided by the embodiment of the present invention still adopts the MU-MIMO technology, the network device 201 divides the scheduled terminals into multiple groups, and each terminal in each group of the multiple groups belongs to at least one MU-MIMO MIMO group.

In this mode, for each group, the rules for dividing the MU-MIMO groups of the terminals scheduled by the network device 201 are the same as the rules for the above-mentioned 9. Multiple groups, and the rules for implementation mode 4; in the grouping information, the terminal identifier is the same as the MU-MIMO group The rules that are satisfied by the correspondence between the MU-MIMO group identifiers are also the same as those of the multiple groupings in the above 7, the rules of the third implementation mode, and the repeated places will not be repeated.

The difference from the above 9. Multiple groups and implementation mode 4 is that in this mode, the target receiving terminal information is: in the grouping information, the target MU-MIMO group is in each MU-MIMO group in the group to which the target MU-MIMO belongs. sequence number in .

Referring to FIG. 4d, still taking the terminal 202 as the second terminal in the second MU-MIMO group in the group identified by GRP_ID_1 as an example, the data frame sent by the network device 201 to the terminal 202 is also sent to the terminal to which the terminal 202 belongs. For each terminal in the second MU-MIMO group, the target receiving terminal information is the sequence number of the second MU-MIMO group in the N MU-MIMO groups.

If the maximum number of groups to which multiple terminals scheduled by the network device 201 belong is pre-specified as 8, then 3 bits are required to represent the target group identifier; it is pre-specified that the maximum number of MU-MIMO groups to which multiple terminals scheduled by the network device 201 belong is If it is also 8, you need to use 3 bits to indicate the target receiving terminal information, such as "001" to indicate the target receiving terminal information (in this case, "000" indicates the order of the first MU-MIMO group in the N MU-MIMO groups number, "101" represents the sequence number of the sixth MU-MIMO group in the N MU-MIMO groups).

In this mode, the target group identifier and the target receiving terminal information are used to identify the terminal, which requires 3bit+3bit=6bit, which can save 42bits compared to the MAC address of 48bits.

In this manner, after receiving the target group identifier and the target receiving terminal information, the terminal 202 determines that the group identifier of the group to which it belongs is the same as the target group identifier, and the MU-MIMO group to which it belongs is in each of the groups to which it belongs. The sequence number in the MU-MIMO group is the same as the sequence indicated by the target receiving terminal information, then it is determined that the data frame includes the data sent to itself, and the data frame is read and sent from the data frame according to the sequence pre-agreed with the network device 201. data to itself.

Regardless of the various implementations in which the network device 201 divides the multiple terminals into one group listed in Table 1, or the various implementations in which the network device 201 divides the multiple terminals into multiple groups listed in Table 2, it is possible to Optionally, the target receiving terminal information may be located in the physical layer signaling SIG of the data frame sent by the network device 201 .

Further, optionally, the SIG of the data frame sent by the network device 201 further includes resource information of physical layer resources allocated for the target receiving terminal. The resource information of the physical layer resource includes at least one of the following information: Modulation and Coding Scheme (MCS), bandwidth (BandWID_th, BW), data length (length) and the like used by the target receiving terminal to send data.

Optionally, if in the data transmission system provided by the embodiment of the present invention, data transmission is performed between the network device 201 and multiple scheduled terminals in an Orthogonal Frequency Division Multiple Access (OFDMA) manner, the above The resource information may include information of OFDMA subchannels.

If in the data transmission system provided by the embodiment of the present invention, the network device 201 and multiple scheduled terminals adopt a multi-purpose MU-MIMO manner for data transmission, the above-mentioned resource information may include: space-time stream information.

In addition, the network device 201 can also send the information of the effective duration of the packet information to the scheduled multiple terminals, wherein the network device 201 can carry the information of the effective duration through a dedicated field or a Duration field in the data frame.

The data transmission system provided by the embodiments of the present invention has been described in detail above. The data transmission system can be a data transmission system composed of APs and STAs in a WLAN, and all wireless communication systems that acquire channel use rights based on contention.

Hereinafter, taking WLAN as an example, detailed description will be given through specific Embodiment 2, Embodiment 3 and Embodiment 4.

[Example 2]

In the second embodiment, the AP divides multiple STAs scheduled by it into one or more groups, and takes the group identifier of the group to which the STA belongs and the order of the identifier of the STA in the identifier sequence of each STA in the group to which the STA belongs, as the temporary identifier of the STA. Identifies the STA.

FIG. 5 is a flowchart of a method on the AP side in the second embodiment. As shown in Figure 5, the method includes the following steps:

S501: The AP sends the grouping information by using a management frame or a field in any frame;

The grouping information may indicate that the plurality of STAs scheduled by the AP are divided into one group or groups, and the identification of the STAs in each group.

If it is divided into one group, it only needs to indicate the STA identifiers of the STAs included in the group; if it is divided into multiple groups, it is also necessary to indicate the group identifier of each group.

For example, the AP schedules 8 STAs, and the AP divides the 8 STAs into 2 groups: group 0 and group 1, and use "0" and "1" to identify the two groups; each group includes 4 STAs, such as: grouping 0 includes STA0 to STA3; group 1 includes STA4 to STA7; where "0" to "3" are the STA group identifiers (for example, location number or sequence number) of the STA in group 0, and "4" to "7" are Intra-STA group identifier of the STA in group 1.

S502: The AP carries the temporary identifier of the STA in the physical layer signaling (SIG) of the subsequently sent data frame, that is, the group identifier+STA group identifier.

If the grouping information sent in step S501 indicates that it is divided into only one group, the STA can be uniquely indicated only by indicating the position of the STA in the one group in the SIG.

In addition, in addition to carrying the temporary identity of the STA in the SIG, the SIG may also indicate the resource information of the physical layer resources allocated by the AP for the STA, such as OFDMA subchannel information and/or space-time stream information used by the STA.

The AP may send at least one data frame after sending the packet information in step S501. In order to support the valid indication of multiple data frames, optionally, the AP sets a valid duration for the packet information sent in step S501.

Specifically, the valid duration may be defined by a dedicated field, or may be set by using the frame carrying this field or the Duration (duration) field of any frame. For the former case, the valid duration of the packet information can be less than the length of the continuous transmission opportunity (Transmit Opportunity, TXOP), up to 5ms; it can also be equal to the length of the TXOP, or greater than the length of the TXOP, or even equal to the beacon interval (Beacon Interval), usually Greater than or equal to 100ms; for the latter case, the valid duration of the packet information is defined by the Duration field, and a typical duration is a TXOP length.

Considering the situation of the above example, in the SIG, 1 bit can be used to distinguish the group identifiers of the two groups, and 2 bits can be used to uniquely identify the position of the STA in the group. Combining these two indications, the AP can uniquely identify a specific STA, and only uses 3 bits, which saves 45 bits compared to the 48-bit MAC address.

FIG. 6 is a flow chart of the method on the STA side of the second example. As shown in Figure 6, the method includes:

S601: The STA receives the management frame or a field in any frame, obtains grouping information, and according to the grouping information, the STA learns its own temporary identity;

Wherein, if the group information sent by the AP includes: the group identifier + the location information of the identifier of the STA in the group, the STA will include the group identifier of the group to which it belongs and the self identifier in the STA identifier sequence of each STA included in the group. The location information is used as its own temporary identifier; if the grouping information sent by the AP only includes the location information of the STA, the STA uses its own location information as its own temporary identifier.

If the STA receives multiple pieces of grouping information, and the multiple pieces of grouping information all relate to the STA, optionally, the STA takes the latest received grouping information as the criterion.

S602: The STA receives the data frame, and reads the SIG field of the data frame, and learns the temporary identifier of the STA indicated by the current SIG field;

S603: The STA determines whether the STA temporary identifier indicated by the SIG field is its own temporary identifier, and if so, switches to the corresponding physical layer resource according to the resource information of the physical layer resource allocated for itself in the data frame; otherwise, it can stop reading the current the rest of the frame.

The resource information of the physical layer resource includes OFDMA sub-channel information corresponding to the STA, and/or space-time stream information, and the like. The switching to the corresponding physical layer resource means that the STA switches its current sub-channel for reading/transmitting data to the OFDMA sub-channel indicated by the AP, or switches its current space-time stream for reading/transmitting data. The number of space-time streams indicated by the AP.

Further, the STA can also judge whether the grouping information is still valid when receiving the current data frame according to the information of the validity period of the grouping information. If it is valid, execute step S602; otherwise, stop executing step S602.

Through the method of this embodiment, the overhead of the STA identification in the SIG can be reduced.

FIG. 7 is a schematic diagram of a transmission manner of packet information and data frames transmitted between a STA and an AP. As shown in FIG. 7 , the STA first transmits the grouping information, and then carries the temporary identifier of the STA to which the data frame is to be sent in the SIG field of the data frame to indicate to the STA that the data frame includes the data sent to the STA.

[Example 3]

In the third embodiment, multiple STAs are grouped according to the unit channel used by the STA, and the STAs using the same unit channel belong to the same group.

The unit channel refers to a fixed planned channel in the current WLAN network, for example, each channel with a bandwidth of 5MHz, 10MHz, or 20MHz.

Since multiple STAs are grouped according to the unit channel used by the STA, the AP sends a SIG on the unit channel used by the STA, and the SIG may not carry the grouping identifier, but only carry the information of the STA where each terminal using the unit channel is located. location information.

As shown in FIG. 8 , in the SIG sent to STA3 on unit channel 2, STA3 can be uniquely identified by the sequence “7” of the identity of STA3 in the identity sequence of each STA using unit channel 2.

Further, in the case of simultaneous transmission of multiple unit channels, the SIG can be independently sent on each unit channel, that is, the SIG only carries the relevant information of the unit channel, such as the temporary identifier of the STA, and the physical layer resources allocated for the STA. resource information, etc.

The AP sends a frame carrying grouping information. The grouping information includes: the unit channel identifier of each unit channel, and the STA identifier sequence of each STA corresponding to each unit channel identifier and using the unit channel identified by the unit channel identifier.

The frame carrying the grouping information can be sent only on the primary channel, or can be sent on all the unit channels in a duplicated manner (Duplicated Transmission). After the STA acquires the grouping information, it switches to the unit channel it uses, and according to the unique identifier of the STA in the SIG sent on the unit channel (that is, the identifier of the STA is sequenced in the terminal identifier of each terminal using the unit channel). location information), and further determine the OFDMA subchannel used by the STA and the resource information of other physical layer resources.

[Example 4]

The fourth embodiment is extended from the spatial dimension, which is applicable to the simultaneous application of OFDMA and MU-MIMO to the WLAN system.

the first way

In the grouping information, the terminal identifier is the MU-MIMO group identifier of the MU-MIMO group to which the terminal belongs. What is indicated in the SIG is the position of the MU-MIMO group identifier of the MU-MIMO group to which the terminal belongs in each MU-MIMO group identifier sequence in the grouping information.

When sending a data frame, the AP sends the data frame to each AP in the MU-MIMO group, and the data in the data frame is placed in the order pre-agreed by the AP and each AP in the MU-MIMO group; After the data frame is reached, if it is determined whether the data frame is sent to itself, the data sent to itself is read from the data frame according to the sequence pre-agreed with the AP.

the second way

The grouping information includes the identification sequence of each AP. The APs identified by adjacent K identifiers belong to the same MU-MIMO group by default, and the typical value of K is 4; of course, K can also be other values, or even a value dynamically adjusted by the AP. field, or the field of the management frame to adjust.

The AP sends the target receiving terminal information in the SIG, and the target receiving terminal information is used to indicate that in the grouping information, the identifier of the first STA in the MU-MIMO group to which the target STA belongs to which the data frame is sent is in the identifier sequence of multiple STAs in the order. The destination STA places the identity of the first AP in the MU-MIMO group to which it belongs is located in the MU-MIMO group as the order of its identity. If the order is the same as the order indicated by the target receiving terminal information, it is determined that the data frame includes the data sent to itself, and the data sent to itself is read from the data frame according to the sequence pre-agreed with the AP.

Alternatively, the AP sends the target receiving terminal information in the SIG, where the target receiving terminal information is specifically: in the grouping information, the sequence number in each MU-MIMO group of the MU-MIMO group to which the target STA to which the data frame is sent belongs. The destination STA uses the sequence number of the MU-MIMO group to which it belongs in each MU-MIMO group as the location of its terminal identifier. After receiving the target receiving terminal information, if it determines that the MU-MIMO group to which it belongs is in each The sequence number in the MU-MIMO group is the same as the sequence indicated by the target receiving terminal information, then it is determined that the data frame includes the data sent to itself, and the data frame is read and sent to itself according to the sequence pre-agreed with the AP. The data.

The data transmission system provided in Embodiment 1 of the present invention has been described above, and Embodiments 2 to 4 take WLAN as an example to describe the method for sending packet information and identifying terminal location information in this embodiment of the present invention. In the following, the technical effect of the embodiment of the present invention is described by comparing with the existing method of using the STA's reference ID_ or temporary ID_ to identify the STA.

An existing solution is to directly use the STA's reference ID_ or temporary ID_, such as AID_(associatedID_entity), to identify the STA. ID_ The main idea of this scheme is: adding signaling (SIGNALLING) after the preamble (Preamble), and assigning STAs to each subcarrier during subsequent OFDMA transmission of data. The existing AID_ is 12 bits. Even if the partial AID_ (Partial AID_, PAID_) is used as the STA identifier, each STA needs at least 9 bits. Therefore, from the point of view of the required number of bits, 7bit should indicate both the Term ID_ and the Mod ID_, the number of bits is small, and the scalability is not good.

Next, the method provided by the embodiment of the present invention is compared with the above-mentioned method of using PAID_ as the identifier of the STA.

It is assumed that there are 2 ^m * 2 ⁿ STAs, where m is the number of bits used to identify the group to which the multiple STAs belong, and n is the number of bits used to identify the position of the STA in the identity of each STA in the group to which it belongs.

The OFDMA frame schedules K STAs each time, the traditional preamble length is 20us, the frame interval (Short InterframeSpace, SIFS) is 16us, the TXOP length is 5ms, and the frame length is 200us.

SIG adopts BPSK modulation, the coding efficiency is 1/2, and the number of bits included in one symbol is p.

Wherein, when QPSK modulation is used and the coding efficiency is 1/2, p=1;

When 16QAM modulation is used and the coding efficiency is 1/2, p=2;

When 64QAM modulation is used and the coding efficiency is 1/2, p=3.

The group identifier of the group to which the STA belongs, and the temporary identifier (associated ID_entity, AID_) used to indicate the location of the STA identifier in the identifiers of the STAs in the group are sent in the SIG, and the group identifier occupies mbit, AID_ Occupies 12bit.

If PAID_ is used as the identifier of the STA, the number of bits in the SIG is fixed to 9*K*2, where K is the number of STAs scheduled each time in the OFDMA frame;

If the method of using the group identifier and AID_ in the embodiment of the present invention is adopted, the number of bits in the SIG is (m+n)*K*2.

Therefore, the difference in the number of bits in the SIG is: 2*K*(m+n-9) compared with the existing PAID_identification method using the location identification method provided by the embodiment of the present invention.

The difference of the time lengths occupied during data transmission is Δ=[2*K*(m+n-9)/48]*4*N_frame, where N_frame is the number of continuously transmitted frames.

The time overhead for sending packet information is:

T=20+[12*2^n+m*2^m]/(p*48)]*4+SIFS us

According to the above calculation results, the list comparison numerical results are shown in Table 3 below.

table 3

Based on the same inventive concept, the embodiments of the present invention further provide a network device, a terminal, and a data transmission method, which are described in the following Embodiments 5 to 16 respectively. The network equipment provided in the following embodiments can be used as the network equipment 201 in the data transmission system provided by the embodiment of the present invention; the terminal can be used as the terminal 202 in the data transmission system provided by the embodiment of the present invention; the data transmission method can realize the network Data transmission between the device 201 and the terminal 202 . For the implementation details of the network device, the terminal and the data transmission method, reference may be made to Embodiments 1 to 4, and repeated descriptions will not be repeated.

[Example 5]

As shown in FIG. 9 , the network device provided by the fifth embodiment includes:

The first sending unit 901 is configured to send grouping information to multiple terminals scheduled by the network device, where the grouping information includes a terminal identification sequence, and the terminal identification sequence includes the terminal identifications of the multiple terminals arranged in sequence;

The second sending unit 902 is configured to send a data frame, where the data frame carries target receiving terminal information for indicating the target receiving terminal, wherein the target receiving terminal information is the order of the terminal identification of the target receiving terminal in the terminal identification sequence.

Optionally, the grouping information specifically includes: the unit channel identifier of each unit channel used by multiple terminals, and corresponding to each unit channel identifier, including the sequentially arranged terminal identifiers of each terminal using the unit channel identified by the unit channel identifier. sequence;

The second sending unit 902 is specifically configured to: on the target unit channel, send the data frame to the target receiving terminal, wherein the target unit channel is the unit channel used by the target receiving terminal;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the target receiving terminal in the terminal identification sequence corresponding to the unit channel identification of the target unit channel.

Optionally, a multi-user multiple-input multiple-output MU-MIMO manner is used for data transmission between the network device and multiple terminals, the multiple terminals belong to at least one MU-MIMO group, and the terminal identification sequence includes sequentially arranged multiple terminals belong to. MU-MIMO group identifier of the MU-MIMO group;

The second sending unit 902 is specifically configured to: send a data frame to each terminal in the target MU-MIMO group, where the data in the data frame is placed in an order pre-agreed by the network device and each terminal in the target MU-MIMO group, wherein , the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

Optionally, the network device and multiple terminals use MU-MIMO for data transmission, multiple terminals belong to N MU-MIMO groups, and each MU-MIMO group in the first N-1 MU-MIMO groups includes multiple MU-MIMO groups. K terminals in the terminal, the Nth MU-MIMO group includes M terminals in multiple terminals, and the total number of multiple terminals is K*(N-1)+M; in the grouping information, multiple terminals In the sequence of terminal identifiers, the K terminals identified by the first K terminal identifiers belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on. , the M terminals identified by the last M terminal identifiers belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the order of the target MU-MIMO group in the N MU-MIMO groups number, where the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The second sending unit 902 is specifically configured to: send a data frame to each terminal in the target MU-MIMO group, where the data in the data frame is placed in an order pre-agreed by the network device and each terminal in the target MU-MIMO group.

[Example 6]

As shown in Figure 10, the network device provided by the sixth embodiment includes:

The first transmitter 1001 is configured to send grouping information to multiple terminals scheduled by the network device, where the grouping information includes a terminal identification sequence, and the terminal identification sequence includes the terminal identifications of the multiple terminals arranged in sequence;

The second transmitter 1002 is configured to send a data frame, where the data frame carries target receiving terminal information used to indicate the target receiving terminal, wherein the target receiving terminal information is the order of the terminal identification of the target receiving terminal in the terminal identification sequence.

Optionally, the grouping information specifically includes: the unit channel identifier of each unit channel used by multiple terminals, and corresponding to each unit channel identifier, including the sequentially arranged terminal identifiers of each terminal using the unit channel identified by the unit channel identifier. sequence;

The second transmitter 1002 is specifically configured to: on the target unit channel, send the data frame to the target receiving terminal, wherein the target unit channel is the unit channel used by the target receiving terminal;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the target receiving terminal in the terminal identification sequence corresponding to the unit channel identification of the target unit channel.

Optionally, a multi-user multiple-input multiple-output MU-MIMO mode is used for data transmission between the network device and multiple terminals, the multiple terminals belong to at least one MU-MIMO group, and the terminal identification sequence includes sequentially arranged multiple terminals belong to. MU-MIMO group identifier of the MU-MIMO group;

The second transmitter 1002 is specifically configured to: send a data frame to each terminal in the target MU-MIMO group, where the data in the data frame is placed in an order pre-agreed by the network device and each terminal in the target MU-MIMO group, wherein , the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

Optionally, the network device and multiple terminals use MU-MIMO for data transmission, multiple terminals belong to N MU-MIMO groups, and each MU-MIMO group in the first N-1 MU-MIMO groups includes multiple MU-MIMO groups. K terminals in the terminal, the Nth MU-MIMO group includes M terminals in multiple terminals, and the total number of multiple terminals is K*(N-1)+M; in the grouping information, multiple terminals In the terminal identifier sequence of , the K terminals identified by the first K terminal identifiers belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on. , the M terminals identified by the last M terminal identifiers belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the order of the target MU-MIMO group in the N MU-MIMO groups number, where the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The second transmitter 1002 is specifically configured to: send a data frame to each terminal in the target MU-MIMO group, where the data in the data frame is placed in an order pre-agreed by the network device and each terminal in the target MU-MIMO group.

[Embodiment 7]

As shown in FIG. 11 , the network device provided by Embodiment 7 includes:

The first sending unit 1101 is configured to send grouping information to a plurality of terminals scheduled by the network device, where the grouping information includes: a group identifier of each group of a plurality of groups that the network device divides the plurality of terminals into, and a group identifier corresponding to each group identification, including a terminal identification sequence, and the terminal identification sequence includes the terminal identification of each terminal in the group identified by the group identification arranged in sequence;

The second sending unit 1102 is configured to send a data frame, where the data frame carries a target group identifier and target receiving terminal information for indicating the target receiving terminal;

Wherein, the target group identifier is the group identifier of the group to which the target receiving terminal belongs, and the target receiving terminal information is: in the group information, the terminal identifier of the target receiving terminal, the order in the terminal identifier sequence corresponding to the group identifier of the group to which the target receiving terminal belongs .

Optionally, in multiple groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping information specifically includes: a group identifier of each group, corresponding to each group. A grouping identifier, the unit channel identifier of each unit channel used by each terminal included in the grouping identified by the grouping identifier, and each unit channel identifier corresponding to each grouping identifier, including the grouping identifiers arranged in sequence. In the grouping, use the terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

The target receiving terminal information is specifically: in the grouping information, the terminal identification of the target receiving terminal, the order in the terminal identification sequence corresponding to the unit channel identification of the target unit channel used by the target receiving terminal in the grouping to which the target receiving terminal belongs;

The second sending unit 1102 is specifically configured to: send the data frame to the target receiving terminal on the target unit channel.

Optionally, the network device and multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group, corresponding to each group identifier, and the terminal identifier sequence includes a sequence. the MU-MIMO group identifier of the MU-MIMO group to which each terminal in the group identified by the arranged group identifier belongs;

The second sending unit 1102 is specifically configured to: send a data frame to each terminal in the target MU-MIMO group, where the data in the data frame is placed in an order pre-agreed by the network device and each terminal in the target MU-MIMO group, wherein The MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

Optionally, the network device and multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group;

For any one of the multiple groups, if the terminals in the group belong to N MU-MIMO groups, each MU-MIMO group in the first N-1 MU-MIMO groups includes K terminals in the group, The Nth MU-MIMO group includes M terminals in the group, and there are K*(N-1)+M terminals in the group. In the grouping information, the terminal identification sequence of each terminal belonging to the group is in the , the K terminals identified by the first K terminal identifiers belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on, the last M terminals The M terminals identified by the identifier belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identifier of the first terminal in the target MU-MIMO group in the terminal identifier sequence corresponding to the grouping identifier of the group to which the target MU-MIMO group belongs; or the target MU-MIMO group. - the sequence number of the MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, and the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The second sending unit 1102 is specifically configured to: send a data frame to each terminal in the target MU-MIMO group, where the data in the data frame is placed in an order pre-agreed by the network device and each terminal in the target MU-MIMO group.

[Embodiment 8]

As shown in FIG. 12 , the network device provided by the eighth embodiment includes:

The first transmitter 1101 is configured to send grouping information to multiple terminals scheduled by the network device, where the grouping information includes: a group identifier of each group of multiple groups that the network equipment divides the multiple terminals into, and a group identifier corresponding to each group identification, including a terminal identification sequence, and the terminal identification sequence includes the terminal identification of each terminal in the group identified by the group identification arranged in sequence;

The second transmitter 1102 is configured to send a data frame, where the data frame carries a target group identifier and target receiving terminal information for indicating the target receiving terminal;

Wherein, the target group identifier is the group identifier of the group to which the target receiving terminal belongs, and the target receiving terminal information is: in the group information, the terminal identifier of the target receiving terminal, the order in the terminal identifier sequence corresponding to the group identifier of the group to which the target receiving terminal belongs .

Optionally, in multiple groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping information specifically includes: a group identifier of each group, corresponding to each group. A grouping identifier, the unit channel identifier of each unit channel used by each terminal included in the grouping identified by the grouping identifier, and each unit channel identifier corresponding to each grouping identifier, including the grouping identifiers arranged in sequence. In the grouping, use the terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

The target receiving terminal information is specifically: in the grouping information, the terminal identification of the target receiving terminal, the order in the terminal identification sequence corresponding to the unit channel identification of the target unit channel used by the target receiving terminal in the grouping to which the target receiving terminal belongs;

The second transmitter 1102 is specifically configured to send the data frame to the target receiving terminal on the target unit channel.

Optionally, the network device and multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group, corresponding to each group identifier, and the terminal identifier sequence includes a sequence. the MU-MIMO group identifier of the MU-MIMO group to which each terminal in the group identified by the arranged group identifier belongs;

The second transmitter 1102 is specifically configured to: send a data frame to each terminal in the target MU-MIMO group, where the data in the data frame is placed in an order pre-agreed by the network device and each terminal in the target MU-MIMO group, wherein The MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

Optionally, the network device and multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group;

For any one of the multiple groups, if the terminals in the group belong to N MU-MIMO groups, each MU-MIMO group in the first N-1 MU-MIMO groups includes K terminals in the group, The Nth MU-MIMO group includes M terminals in the group, and there are K*(N-1)+M terminals in the group. In the grouping information, the terminal identification sequence of each terminal belonging to the group is in the , the K terminals identified by the first K terminal identifiers belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on, the last M terminals The M terminals identified by the identifier belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identifier of the first terminal in the target MU-MIMO group in the terminal identifier sequence corresponding to the grouping identifier of the group to which the target MU-MIMO group belongs; or the target MU-MIMO group. - the sequence number of the MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, and the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The second transmitter 1102 is specifically configured to: send a data frame to each terminal in the target MU-MIMO group, where the data in the data frame is placed in an order pre-agreed by the network device and each terminal in the target MU-MIMO group.

[Example 9]

As shown in Figure 13, the terminal provided by Embodiment 9 includes:

a receiving unit 1301, configured to receive grouping information sent by a network device, where the grouping information includes a terminal identification sequence, and the terminal identification sequence includes terminal identifications of multiple terminals scheduled by the network device in sequence;

The processing unit 1302 is used to determine the current terminal information, wherein the current terminal information is the order of the terminal identification of the terminal in the terminal identification sequence in the grouping information;

The receiving unit 1301 is further configured to: receive a data frame sent by the network device, where the data frame carries target receiving terminal information used to indicate the target receiving terminal to which the data frame is sent, wherein the target receiving terminal information is the information of the target receiving terminal in the packet information. the order of the terminal identification in the terminal identification sequence;

The processing unit 1302 is further configured to: if the current terminal information is the same as the target receiving terminal information, determine that the data frame includes the data sent to the terminal, and obtain the data sent to the terminal from the data frame.

Optionally, the grouping information specifically includes: the unit channel identifier of each unit channel used by multiple terminals, and corresponding to each unit channel identifier, including the sequentially arranged terminal identifiers of each terminal using the unit channel identified by the unit channel identifier. sequence;

The receiving unit 1301 is specifically configured to: receive the data frame sent by the network device on the current unit channel used by the terminal;

The target receiving terminal information is specifically: in the grouping information, the terminal identifier of the target receiving terminal, and the order in the terminal identifier sequence corresponding to the unit channel identifier of the unit channel used by the target receiving terminal.

Optionally, the network device and multiple terminals use multi-user multiple-input multiple-output MU-MIMO for data transmission, multiple terminals belong to at least one MU-MIMO group, and the terminal identification sequence includes the MU-MIMO to which the multiple terminals belong in order. MU-MIMO group identifier of the MIMO group;

The data frame is sent by the network device to each terminal in the target MU-MIMO group. The data in the data frame is placed in the order pre-agreed by the network device and each terminal in the target MU-MIMO group, and the target MU-MIMO group is the target receiving The MU-MIMO group to which the terminal belongs;

The processing unit 1302 is specifically configured to: if it is determined that the data frame includes data sent to the terminal, after the receiving unit 1301 receives the data frame, obtain the data sent to the terminal from the data frame according to the sequence pre-agreed by the network device and the terminal.

Optionally, the network device and multiple terminals use MU-MIMO for data transmission, multiple terminals belong to N MU-MIMO groups, and each MU-MIMO group in the first N-1 MU-MIMO groups includes multiple MU-MIMO groups. K terminals in the terminal, the Nth MU-MIMO group includes M terminals in multiple terminals, and the total number of multiple terminals is K*(N-1)+M; in the grouping information, multiple terminals In the terminal identifier sequence of , the K terminals identified by the first K terminal identifiers belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on. , the M terminals identified by the last M terminal identifiers belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the order of the target MU-MIMO group in the N MU-MIMO groups number, where the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is placed in the order pre-agreed by the network device and each terminal in the target MU-MIMO group;

The processing unit 1302 is specifically configured to: if it is determined that the data frame includes data sent to the terminal, after the receiving unit 1301 receives the data frame, obtain the data sent to the terminal from the data frame according to the sequence pre-agreed by the network device and the terminal.

[Example 10]

As shown in FIG. 14 , the terminal provided by the tenth embodiment includes:

a receiver 1401, configured to receive grouping information sent by a network device, where the grouping information includes a terminal identification sequence, and the terminal identification sequence includes terminal identifications of multiple terminals scheduled by the network device in sequence;

The processor 1402 is used to determine the current terminal information, wherein the current terminal information is the order of the terminal identification of the terminal in the terminal identification sequence in the grouping information;

The receiver 1401 is further configured to: receive a data frame sent by the network device, where the data frame carries target receiving terminal information used to indicate the target receiving terminal to which the data frame is sent, wherein the target receiving terminal information is, in the packet information, the target receiving terminal's information. the order of the terminal identification in the terminal identification sequence;

The processor 1402 is further configured to: if the current terminal information is the same as the target receiving terminal information, determine that the data frame includes the data sent to the terminal, and obtain the data sent to the terminal from the data frame.

Optionally, the grouping information specifically includes: the unit channel identifier of each unit channel used by multiple terminals, and corresponding to each unit channel identifier, including the sequentially arranged terminal identifiers of each terminal using the unit channel identified by the unit channel identifier. sequence;

The receiver 1401 is specifically used to: receive the data frame sent by the network device on the current unit channel used by the terminal;

The target receiving terminal information is specifically: in the grouping information, the terminal identifier of the target receiving terminal, and the order in the terminal identifier sequence corresponding to the unit channel identifier of the unit channel used by the target receiving terminal.

Optionally, the network device and multiple terminals use multi-user multiple-input multiple-output MU-MIMO for data transmission, multiple terminals belong to at least one MU-MIMO group, and the terminal identification sequence includes the MU-MIMO to which the multiple terminals belong in order. MU-MIMO group identifier of the MIMO group;

The data frame is sent by the network device to each terminal in the target MU-MIMO group. The data in the data frame is placed in the order pre-agreed by the network device and each terminal in the target MU-MIMO group, and the target MU-MIMO group is the target receiving The MU-MIMO group to which the terminal belongs;

The processor 1402 is specifically configured to: if it is determined that the data frame includes data sent to the terminal, after the receiver 1401 receives the data frame, obtain the data sent to the terminal from the data frame according to the sequence pre-agreed by the network device and the terminal.

Optionally, the network device and multiple terminals use MU-MIMO for data transmission, multiple terminals belong to N MU-MIMO groups, and each MU-MIMO group in the first N-1 MU-MIMO groups includes multiple MU-MIMO groups. K terminals in the terminal, the Nth MU-MIMO group includes M terminals in multiple terminals, and the total number of multiple terminals is K*(N-1)+M; in the grouping information, multiple terminals In the terminal identifier sequence of , the K terminals identified by the first K terminal identifiers belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on. , the M terminals identified by the last M terminal identifiers belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the order of the target MU-MIMO group in the N MU-MIMO groups number, where the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is placed in the order pre-agreed by the network device and each terminal in the target MU-MIMO group;

The processor 1402 is specifically configured to: if it is determined that the data frame includes data sent to the terminal, after the receiver 1401 receives the data frame, obtain the data sent to the terminal from the data frame according to the sequence pre-agreed by the network device and the terminal.

[Example 11]

The receiving unit 1501 is configured to receive grouping information sent by a network device, where the grouping information includes: a group identifier of each group of multiple groups that the network equipment divides the scheduled terminals into, and a group identifier corresponding to each group, including the terminal identification sequence, the terminal identification sequence includes the terminal identification of each terminal in the group identified by the group identification arranged in sequence;

The processing unit 1502 is used to determine the current grouping identifier and the current terminal information; wherein, the current grouping identifier is: in the grouping information, the grouping identifier corresponding to the terminal identifier of the terminal; the current terminal information is: in the grouping information, the terminal identifier of the terminal is in The order in the terminal identification sequence corresponding to the current grouping identification;

The receiving unit 1501 is further configured to: receive a data frame sent by a network device, and the data frame carries a target group identifier and target receiving terminal information; wherein, the target group identifier is the group identifier of the group to which the data frame is sent to the target receiving terminal; the target receiving terminal The information is the order of the terminal identification of the target receiving terminal in the terminal identification sequence corresponding to the grouping identification of the grouping to which the target receiving terminal belongs;

The processing unit 1502 is further configured to: if the current grouping identifier is the same as the target grouping identifier, and the current terminal information is the same as the target receiving terminal information, determine that the data frame includes the data sent to the terminal, and obtain the data sent to the terminal from the data frame. data.

Optionally, in multiple groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping information specifically includes: a group identifier of each group, corresponding to each group. A grouping identifier, the unit channel identifier of each unit channel used by each terminal included in the grouping identified by the grouping identifier, and each unit channel identifier corresponding to each grouping identifier, including the grouping identifiers arranged in sequence. In the grouping, use the terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

The target receiving terminal information is specifically: in the grouping information, the terminal identification of the target receiving terminal, the order in the terminal identification sequence corresponding to the unit channel identification of the target unit channel used by the target receiving terminal in the grouping to which the target receiving terminal belongs;

The receiving unit 1501 is specifically configured to: receive the data frame sent by the network device on the current unit channel used by the terminal.

Optionally, the network device and multiple terminals use multi-user multiple-input multiple-output MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group, corresponding to each group identifier. , the terminal identification sequence includes the sequentially arranged MU-MIMO group identifiers of the MU-MIMO groups to which each terminal in the group identified by the group identifier belongs;

The data frame is sent by the network device to each terminal in the target MU-MIMO group. The data in the data frame is placed in the order pre-agreed by the network device and each terminal in the target MU-MIMO group, and the target MU-MIMO group is the target receiving The MU-MIMO group to which the terminal belongs;

The processing unit 1502 is specifically configured to: if it is determined that the data frame includes data sent to the terminal, after receiving the data frame, obtain the data sent to the terminal from the data frame according to the sequence pre-agreed by the network device and the terminal.

Optionally, the network device and multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group;

For any one of the multiple groups, if the terminals in the group belong to N MU-MIMO groups, each MU-MIMO group in the first N-1 MU-MIMO groups includes K terminals in the group, The Nth MU-MIMO group includes M terminals in the group, and there are K*(N-1)+M terminals in the group, then in the group information, in the terminal identification sequence of each terminal belonging to the group, The K terminals identified by the first K terminal identifiers belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on, the last M terminal identifiers The identified M terminals belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identifier of the first terminal in the target MU-MIMO group in the terminal identifier sequence corresponding to the grouping identifier of the group to which the target MU-MIMO group belongs; or the target MU-MIMO group. - the sequence number of the MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, and the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is placed in the order pre-agreed by the network device and each terminal in the target MU-MIMO group;

The processing unit 1502 is specifically configured to: if it is determined that the data frame includes data sent to the terminal, after receiving the data frame, obtain the data sent to the terminal from the data frame according to the sequence pre-agreed by the network device and the terminal.

[Example 12]

As shown in FIG. 16 , the terminal provided by the twelfth embodiment includes:

The receiver 1601 is configured to receive grouping information sent by a network device, where the grouping information includes: a group identifier of each group of multiple groups that the network equipment divides the scheduled terminals into, and a group identifier corresponding to each group, including the terminal identification sequence, the terminal identification sequence includes the terminal identification of each terminal in the group identified by the group identification arranged in sequence;

The processor 1602 is configured to determine the current grouping identifier and the current terminal information; wherein, the current grouping identifier is: in the grouping information, the grouping identifier corresponding to the terminal identifier of the terminal; the current terminal information is: in the grouping information, the terminal identifier of the terminal is in The order in the terminal identification sequence corresponding to the current grouping identification;

The receiver 1601 is further configured to: receive a data frame sent by a network device, where the data frame carries a target group identifier and target receiving terminal information; wherein, the target group identifier is the group identifier of the group to which the data frame is sent to the target receiving terminal; the target receiving terminal The information is the order of the terminal identification of the target receiving terminal in the terminal identification sequence corresponding to the grouping identification of the grouping to which the target receiving terminal belongs;

The processor 1602 is further configured to: if the current grouping identifier is the same as the target grouping identifier, and the current terminal information is the same as the target receiving terminal information, determine that the data frame includes the data sent to the terminal, and obtain the data sent to the terminal from the data frame. data.

Optionally, in multiple groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping information specifically includes: a group identifier of each group, corresponding to each group. A grouping identifier, the unit channel identifier of each unit channel used by each terminal included in the grouping identified by the grouping identifier, and each unit channel identifier corresponding to each grouping identifier, including the grouping identifiers arranged in sequence. In the grouping, use the terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

The target receiving terminal information is specifically: in the grouping information, the terminal identification of the target receiving terminal, the order in the terminal identification sequence corresponding to the unit channel identification of the target unit channel used by the target receiving terminal in the grouping to which the target receiving terminal belongs;

The receiver 1601 is specifically configured to: receive the data frame sent by the network device on the current unit channel used by the terminal.

Optionally, the network device and multiple terminals use multi-user multiple-input multiple-output MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group, corresponding to each group identifier. , the terminal identification sequence includes the sequentially arranged MU-MIMO group identifiers of the MU-MIMO groups to which each terminal in the group identified by the group identifier belongs;

The data frame is sent by the network device to each terminal in the target MU-MIMO group. The data in the data frame is placed in the order pre-agreed by the network device and each terminal in the target MU-MIMO group, and the target MU-MIMO group is the target receiving The MU-MIMO group to which the terminal belongs;

The processor 1602 is specifically configured to: if it is determined that the data frame includes data sent to the terminal, after receiving the data frame, obtain the data sent to the terminal from the data frame according to the sequence pre-agreed by the network device and the terminal.

Optionally, the network device and multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group;

For any one of the multiple groups, if the terminals in the group belong to N MU-MIMO groups, each MU-MIMO group in the first N-1 MU-MIMO groups includes K terminals in the group, The Nth MU-MIMO group includes M terminals in the group, and there are K*(N-1)+M terminals in the group, then in the group information, in the terminal identification sequence of each terminal belonging to the group, The K terminals identified by the first K terminal identifiers belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on, the last M terminal identifiers The identified M terminals belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identifier of the first terminal in the target MU-MIMO group in the terminal identifier sequence corresponding to the grouping identifier of the group to which the target MU-MIMO group belongs; or the target MU-MIMO group. - the sequence number of the MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, and the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is placed in the order pre-agreed by the network device and each terminal in the target MU-MIMO group;

The processor 1602 is specifically configured to: if it is determined that the data frame includes data sent to the terminal, after receiving the data frame, obtain the data sent to the terminal from the data frame according to the sequence pre-agreed by the network device and the terminal.

[Example thirteen]

As shown in FIG. 17 , the data transmission method provided by the thirteenth embodiment includes:

S1701: Send grouping information to multiple terminals scheduled by the current network device, where the grouping information includes a terminal identification sequence, and the terminal identification sequence includes terminal identifications of multiple terminals arranged in sequence;

S1702: Send a data frame, where the data frame carries target receiving terminal information used to indicate the target receiving terminal, where the target receiving terminal information is the order of terminal identifiers of the target receiving terminal in the terminal identifier sequence.

Optionally, the grouping information specifically includes: the unit channel identifier of each unit channel used by multiple terminals, and corresponding to each unit channel identifier, including the sequentially arranged terminal identifiers of each terminal using the unit channel identified by the unit channel identifier. sequence;

Step S1702 sends the data frame, including: on the target unit channel, sending the data frame to the target receiving terminal, wherein the target unit channel is the unit channel used by the target receiving terminal;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the target receiving terminal in the terminal identification sequence corresponding to the unit channel identification of the target unit channel.

Optionally, a multi-user multiple-input multiple-output MU-MIMO mode is used for data transmission between the current network device and multiple terminals, the multiple terminals belong to at least one MU-MIMO group, and the terminal identification sequence includes the belongings of the sequentially arranged multiple terminals. MU-MIMO group identifier of the MU-MIMO group;

Step S1702 sending a data frame includes: sending a data frame to each terminal in the target MU-MIMO group, where the data in the data frame is placed in an order pre-agreed by the current network device and each terminal in the target MU-MIMO group, wherein , the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

Optionally, the current network device and multiple terminals use MU-MIMO for data transmission, multiple terminals belong to N MU-MIMO groups, and each MU-MIMO group in the first N-1 MU-MIMO groups includes multiple K terminals among the terminals, the Nth MU-MIMO group includes M terminals among multiple terminals, and the total number of multiple terminals is K*(N-1)+M; in the grouping information, multiple In the terminal identification sequence of the terminal, the K terminals identified by the first K terminal identifications belong to the first MU-MIMO group, and the K terminals identified by the next K terminal identifications belong to the second MU-MIMO group. By analogy, the M terminals identified by the last M terminal identifiers belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the order of the target MU-MIMO group in the N MU-MIMO groups number, where the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

Step S1702 sending a data frame includes: sending a data frame to each terminal in the target MU-MIMO group, where the data in the data frame is placed in an order pre-agreed by the current network device and each terminal in the target MU-MIMO group.

[Example 14]

As shown in FIG. 18 , the data transmission method provided by the fourteenth embodiment includes:

S1801: Send grouping information to multiple terminals scheduled by the current network device, where the grouping information includes: a grouping identifier of each group of multiple groups that the current network equipment divides the multiple terminals into, and corresponding to each grouping identifier, including the terminal identification sequence, the terminal identification sequence includes the terminal identification of each terminal in the group identified by the group identification arranged in sequence;

S1802: Send a data frame, where the data frame carries a target group identifier and target receiving terminal information used to indicate the target receiving terminal;

Wherein, the target group identifier is the group identifier of the group to which the target receiving terminal belongs, and the target receiving terminal information is: in the group information, the terminal identifier of the target receiving terminal, the order in the terminal identifier sequence corresponding to the group identifier of the group to which the target receiving terminal belongs .

Optionally, in multiple groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping information specifically includes: a group identifier of each group, corresponding to each group. A grouping identifier, the unit channel identifier of each unit channel used by each terminal included in the grouping identified by the grouping identifier, and each unit channel identifier corresponding to each grouping identifier, including the grouping identifiers arranged in sequence. In the grouping, use the terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

The target receiving terminal information is specifically: in the grouping information, the terminal identification of the target receiving terminal, the order in the terminal identification sequence corresponding to the unit channel identification of the target unit channel used by the target receiving terminal in the grouping to which the target receiving terminal belongs;

Step S1802 sending the data frame includes: sending the data frame to the target receiving terminal on the target unit channel.

Optionally, the current network device and multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group, corresponding to each group identifier, and the terminal identifier sequence includes: the MU-MIMO group identifier of the MU-MIMO group to which each terminal in the group identified by the sequentially arranged group identifier belongs;

Step S1802 sending a data frame includes: sending a data frame to each terminal in the target MU-MIMO group, where the data in the data frame is placed in an order pre-agreed by the current network device and each terminal in the target MU-MIMO group, wherein The MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

Optionally, the current network device and multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group;

For any one of the multiple groups, if the terminals in the group belong to N MU-MIMO groups, each MU-MIMO group in the first N-1 MU-MIMO groups includes K terminals in the group, The Nth MU-MIMO group includes M terminals in the group, and there are K*(N-1)+M terminals in the group. In the grouping information, the terminal identification sequence of each terminal belonging to the group is in the , the K terminals identified by the first K terminal identifiers belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on, the last M terminals The M terminals identified by the identifier belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identifier of the first terminal in the target MU-MIMO group in the terminal identifier sequence corresponding to the grouping identifier of the group to which the target MU-MIMO group belongs; or the target MU-MIMO group. - the sequence number of the MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, and the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

Step S1802 sends a data frame to the target receiving terminal, including: sending a data frame to each terminal in the target MU-MIMO group, where the data in the data frame is placed in an order pre-agreed by the network device and each terminal in the target MU-MIMO group of.

[Example 15]

As shown in FIG. 19 , the data transmission method provided by the fifteenth embodiment includes:

S1901: Receive grouping information sent by a network device, where the grouping information includes a terminal identification sequence, and the terminal identification sequence includes terminal identifications of multiple terminals scheduled by the network device in sequence;

S1902: Determine the current terminal information, wherein the current terminal information is the order of the terminal identification of the current terminal in the terminal identification sequence in the grouping information;

S1903: Receive a data frame sent by the network device, where the data frame carries target receiving terminal information used to indicate the target receiving terminal to which the data frame is sent, wherein the target receiving terminal information is in the packet information, and the terminal identification of the target receiving terminal is in the terminal identification the order in the sequence;

S1904: If the current terminal information is the same as the target receiving terminal information, determine that the data frame includes the data sent to the current terminal, and obtain the data sent to the current terminal from the data frame.

Optionally, the grouping information specifically includes: the unit channel identifier of each unit channel used by multiple terminals, and corresponding to each unit channel identifier, including the sequentially arranged terminal identifiers of each terminal using the unit channel identified by the unit channel identifier. sequence;

Step S1903 receives the data frame sent by the network device, including: on the current unit channel used by the current terminal, receiving the data frame sent by the network device;

The target receiving terminal information is specifically: in the grouping information, the terminal identifier of the target receiving terminal, and the order in the terminal identifier sequence corresponding to the unit channel identifier of the unit channel used by the target receiving terminal.

Optionally, the network device and multiple terminals use multi-user multiple-input multiple-output MU-MIMO for data transmission, multiple terminals belong to at least one MU-MIMO group, and the terminal identification sequence includes the MU-MIMO to which the multiple terminals belong in order. MU-MIMO group identifier of the MIMO group;

The data frame is sent by the network device to each terminal in the target MU-MIMO group. The data in the data frame is placed in the order pre-agreed by the network device and each terminal in the target MU-MIMO group, and the target MU-MIMO group is the target receiving The MU-MIMO group to which the terminal belongs;

Step S1904 obtains the data sent to the current terminal from the data frame, including: obtaining the data sent to the current terminal from the data frame according to a sequence pre-agreed between the network device and the current terminal.

Optionally, the network device and multiple terminals use MU-MIMO for data transmission, multiple terminals belong to N MU-MIMO groups, and each MU-MIMO group in the first N-1 MU-MIMO groups includes multiple MU-MIMO groups. K terminals in the terminal, the Nth MU-MIMO group includes M terminals in multiple terminals, and the total number of multiple terminals is K*(N-1)+M; in the grouping information, multiple terminals In the terminal identifier sequence of , the K terminals identified by the first K terminal identifiers belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on. , the M terminals identified by the last M terminal identifiers belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the order of the target MU-MIMO group in the N MU-MIMO groups number, where the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is placed in the order pre-agreed by the network device and each terminal in the target MU-MIMO group;

Step S1904 obtains the data sent to the current terminal from the data frame, including: obtaining the data sent to the current terminal from the data frame according to the sequence pre-agreed by the network device and the current terminal.

[Example sixteen]

As shown in Figure 20, the data transmission method provided by Embodiment 16 includes:

S2001: Receive grouping information sent by a network device, where the grouping information includes: a group identifier of each group of multiple groups that the network equipment divides the scheduled terminals into, and a group identifier corresponding to each group, including a terminal identifier sequence, a terminal identifier sequence, and a terminal identifier sequence. The identification sequence includes the terminal identification of each terminal in the group identified by the group identification arranged in sequence;

S2002: Determine the current grouping identifier and the current terminal information; wherein, the current grouping identifier is: in the grouping information, the grouping identifier corresponding to the terminal identifier of the current terminal; the current terminal information is: in the grouping information, the terminal identifier of the current terminal is in the current grouping Identify the order in the corresponding terminal identification sequence;

S2003: Receive a data frame sent by a network device, where the data frame carries a target group identifier and target receiving terminal information; wherein, the target group identifier is the group identifier of the group to which the data frame is sent to the target receiving terminal; the target receiving terminal information is the target receiving terminal The order of the terminal identification in the terminal identification sequence corresponding to the grouping identification of the grouping to which the target receiving terminal belongs;

S2004: If the current group identifier is the same as the target group identifier, and the current terminal information is the same as the target receiving terminal information, determine that the data frame includes the data sent to the current terminal, and obtain the data sent to the current terminal from the data frame.

Optionally, in multiple groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping information specifically includes: a group identifier of each group, corresponding to each group. A grouping identifier, the unit channel identifier of each unit channel used by each terminal included in the grouping identified by the grouping identifier, and each unit channel identifier corresponding to each grouping identifier, including the grouping identifiers arranged in sequence. In the grouping, use the terminal identification sequence of each terminal of the unit channel identified by the unit channel identification;

The target receiving terminal information is specifically: in the grouping information, the terminal identification of the target receiving terminal, the order in the terminal identification sequence corresponding to the unit channel identification of the target unit channel used by the target receiving terminal in the grouping to which the target receiving terminal belongs;

Step S2003 receiving the data frame sent by the network device includes: on the current unit channel used by the current terminal, receiving the data frame sent by the network device.

Optionally, the network device and multiple terminals use multi-user multiple-input multiple-output MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group, corresponding to each group identifier. , the terminal identification sequence includes the sequentially arranged MU-MIMO group identifiers of the MU-MIMO groups to which each terminal in the group identified by the group identifier belongs;

The data frame is sent by the network device to each terminal in the target MU-MIMO group. The data in the data frame is placed in the order pre-agreed by the network device and each terminal in the target MU-MIMO group, and the target MU-MIMO group is the target receiving The MU-MIMO group to which the terminal belongs;

Obtaining the data sent to the current terminal from the data frame in step S2004 includes: obtaining the data sent to the current terminal from the data frame according to a sequence pre-agreed by the network device and the current terminal.

Optionally, the network device and multiple terminals use MU-MIMO for data transmission, and each terminal in each of the multiple groups belongs to at least one MU-MIMO group;

For any one of the multiple groups, if the terminals in the group belong to N MU-MIMO groups, each MU-MIMO group in the first N-1 MU-MIMO groups includes K terminals in the group, The Nth MU-MIMO group includes M terminals in the group, and there are K*(N-1)+M terminals in the group, then in the group information, in the terminal identification sequence of each terminal belonging to the group, The K terminals identified by the first K terminal identifiers belong to the first MU-MIMO group, the K terminals identified by the next K terminal identifiers belong to the second MU-MIMO group, and so on, the last M terminal identifiers The identified M terminals belong to the Nth MU-MIMO group; wherein K, M, and N are positive integers, and M is not greater than K;

The target receiving terminal information is specifically: in the grouping information, the order of the terminal identifier of the first terminal in the target MU-MIMO group in the terminal identifier sequence corresponding to the grouping identifier of the group to which the target MU-MIMO group belongs; or the target MU-MIMO group. - the sequence number of the MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, and the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

The data frame is sent by the network device to each terminal in the target MU-MIMO group, and the data in the data frame is placed in the order pre-agreed by the network device and each terminal in the target MU-MIMO group;

Obtaining the data sent to the current terminal from the data frame in step S2004 includes: obtaining the data sent to the current terminal from the data frame according to a sequence pre-agreed by the network device and the current terminal.

To sum up, the embodiments of the present invention provide a network device, a terminal, and a data transmission method. Wherein, the network device sends to the scheduled multiple terminals grouping information in which the multiple terminals are divided into one group or multiple groups, if divided into one group, the grouping information includes the terminal identification sequence of the multiple terminals; if divided into multiple groups , the grouping information includes a group identifier of each group, and corresponding to each group identifier, the terminal identifier sequence of each terminal included in the group identified by the group identifier.

The network device sends a data frame to a target receiving terminal that communicates with the network device among the multiple terminals. If it is divided into a group, the data frame carries target receiving terminal information used to indicate the target receiving terminal. The target receiving terminal The information is the order of the terminal identification of the target receiving terminal in the above-mentioned terminal identification sequence; if divided into multiple groups, the target grouping identification and the target receiving terminal information are carried in the data frame, wherein the target grouping identification is the grouping to which the target receiving terminal belongs The target receiving terminal information is the order of the terminal identification of the target receiving terminal in the terminal identification sequence corresponding to the grouping identification of the group to which the target receiving terminal belongs in the grouping information.

Based on the above scheme, it is realized that the terminal is identified by the order of the terminal identification of the terminal in the terminal identification sequence, so as to avoid using the terminal identification that occupies more information bits, so that the capacity of the existing signaling information field can meet the communication requirements of multiple terminals. Require.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on at least one computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

Although preferred embodiments of the present invention have been described, additional changes and modifications to these embodiments may occur to those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be construed to include the preferred embodiment and all changes and modifications that fall within the scope of the present invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (24)

1. A network device, comprising:

a first sending unit, configured to send packet information to a plurality of terminals scheduled by the network device, where the packet information includes a terminal identifier sequence, and the terminal identifier sequence includes terminal identifiers of the plurality of terminals arranged in sequence;

a second sending unit, configured to send a data frame, where the data frame carries target receiving terminal information used for indicating a target receiving terminal, and the target receiving terminal information is an order of a terminal identifier of the target receiving terminal in the terminal identifier sequence;

the network equipment and the plurality of terminals adopt a multi-user multi-input multi-output MU-MIMO mode to carry out data transmission, the plurality of terminals belong to at least one MU-MIMO group, and the terminal identification sequence comprises sequentially arranged MU-MIMO group identifications of the MU-MIMO groups to which the plurality of terminals belong;

the second sending unit is specifically configured to: and sending the data frame to each terminal in a target MU-MIMO group, wherein the data in the data frame is placed according to an order pre-agreed by the network device and each terminal in the target MU-MIMO group, and the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

2. The network device of claim 1, wherein the grouping information specifically includes: the unit channel identifier of each unit channel used by the plurality of terminals and the terminal identifier sequence of each terminal corresponding to each unit channel identifier and using the unit channel identified by the unit channel identifier are sequentially arranged;

the second sending unit is specifically configured to: sending the data frame to the target receiving terminal on a target unit channel, wherein the target unit channel is a unit channel used by the target receiving terminal;

the target receiving terminal information specifically includes: in the grouping information, the terminal identifier of the target receiving terminal is in the order of the terminal identifier sequence corresponding to the unit channel identifier of the target unit channel.

3. The network device of claim 1, wherein the network device performs data transmission with the plurality of terminals in a MU-MIMO manner, the plurality of terminals belong to N MU-MIMO groups, each of the first N-1 MU-MIMO groups includes K terminals of the plurality of terminals, the nth MU-MIMO group includes M terminals of the plurality of terminals, and the total number of the plurality of terminals is K (N-1) + M; in the grouping information, in the terminal identification sequences of the multiple terminals, the K terminals identified by the first K terminal identifications belong to a first MU-MIMO group, the K terminals identified by the next K terminal identifications belong to a second MU-MIMO group, and so on, and the M terminals identified by the last M terminal identifications belong to an nth MU-MIMO group; wherein K, M, N is a positive integer, M is not greater than K;

the target receiving terminal information specifically includes: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the sequence number of a target MU-MIMO group in the N MU-MIMO groups, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

the second sending unit is specifically configured to: and sending the data frame to each terminal in the target MU-MIMO group, wherein the data in the data frame is placed according to the order pre-agreed by the network equipment and each terminal in the target MU-MIMO group.

4. A network device, comprising:

a first sending unit, configured to send packet information to a plurality of terminals scheduled by the network device, where the packet information includes: the network equipment divides the plurality of terminals into a group identifier of each group of a plurality of groups and comprises a terminal identifier sequence corresponding to each group identifier, and the terminal identifier sequence comprises the terminal identifiers of the terminals in the groups identified by the group identifiers which are arranged in sequence;

a second sending unit, configured to send a data frame, where the data frame carries a target packet identifier and target receiving terminal information used to indicate a target receiving terminal;

wherein, the target grouping identifier is the grouping identifier of the grouping to which the target receiving terminal belongs, and the target receiving terminal information is: in the grouping information, the terminal identification of the target receiving terminal is in the order in the terminal identification sequence corresponding to the grouping identification of the group to which the target receiving terminal belongs;

the network equipment and the plurality of terminals adopt an MU-MIMO mode to carry out data transmission, each terminal in each group in the plurality of groups belongs to at least one MU-MIMO group, and the terminal identification sequence comprises MU-MIMO group identifications of MU-MIMO groups to which each terminal in the group identified by the group identification in sequence corresponding to each group identification;

the second sending unit is specifically configured to: and sending the data frame to each terminal in a target MU-MIMO group, wherein the data in the data frame is placed according to an order pre-agreed by the network device and each terminal in the target MU-MIMO group, and the MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

5. The network device of claim 4,

in the plurality of groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping information specifically includes: a group identifier of each group, a unit channel identifier of each unit channel used by each terminal included in the group identified by the group identifier corresponding to each group identifier, and a terminal identifier sequence of each terminal using the unit channel identified by the unit channel identifier in the group identified by the group identifier arranged in sequence corresponding to each unit channel identifier corresponding to each group identifier;

the target receiving terminal information specifically includes: in the grouping information, the terminal identifier of the target receiving terminal is the order in the terminal identifier sequence corresponding to the unit channel identifier of the target unit channel used by the target receiving terminal in the grouping to which the target receiving terminal belongs;

the second sending unit is specifically configured to: and sending the data frame to the target receiving terminal on the target unit channel.

6. The network device of claim 4, wherein the network device performs data transmission with the plurality of terminals in a MU-MIMO manner, and each terminal in each of the plurality of packets belongs to at least one MU-MIMO group;

for any one of the plurality of groups, if the terminal in the group belongs to N MU-MIMO groups, each of the first N-1 MU-MIMO groups includes K terminals in the group, the nth MU-MIMO group includes M terminals in the group, and the group has K (N-1) + M terminals in total, then, in the sequence of terminal identifications of the terminals belonging to the group, the K terminals identified by the first K terminal identifications belong to a first MU-MIMO group, the K terminals identified by the next K terminal identifications belong to a second MU-MIMO group, and so on, and the M terminals identified by the last M terminal identifications belong to the nth MU-MIMO group; wherein K, M, N is a positive integer, M is not greater than K;

the target receiving terminal information specifically includes: in the grouping information, the terminal identification of the first terminal in the target MU-MIMO group is in the order of the terminal identification sequence corresponding to the grouping identification of the group to which the target MU-MIMO group belongs; or the sequence number of a target MU-MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

the second sending unit is specifically configured to: and sending the data frame to each terminal in the target MU-MIMO group, wherein the data in the data frame is placed according to the order pre-agreed by the network equipment and each terminal in the target MU-MIMO group.

7. A terminal, comprising:

a receiving unit, configured to receive packet information sent by a network device, where the packet information includes a terminal identifier sequence, and the terminal identifier sequence includes terminal identifiers of multiple terminals scheduled by the network device and arranged in sequence;

a processing unit, configured to determine current terminal information, where the current terminal information is an order of terminal identifiers of the terminals in the group information in the terminal identifier sequence;

the receiving unit is further configured to: receiving a data frame sent by the network device, where the data frame carries target receiving terminal information used for indicating a target receiving terminal to which the data frame is sent, where the target receiving terminal information is an order of terminal identifiers of the target receiving terminals in the group information in the terminal identifier sequence;

the processing unit is further to: if the current terminal information is the same as the target receiving terminal information, determining that the data frame comprises data sent to the terminal, and acquiring the data sent to the terminal from the data frame;

the network equipment and the plurality of terminals adopt a multi-user multi-input multi-output MU-MIMO mode to carry out data transmission, the plurality of terminals belong to at least one MU-MIMO group, and the terminal identification sequence comprises sequentially arranged MU-MIMO group identifications of the MU-MIMO groups to which the plurality of terminals belong;

the data frame is sent to each terminal in a target MU-MIMO group by the network device, the data in the data frame is placed according to a predetermined sequence between the network device and each terminal in the target MU-MIMO group, and the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

the processing unit is specifically configured to: and if the data frame is determined to contain the data sent to the terminal, acquiring the data sent to the terminal from the data frame according to the sequence agreed in advance by the network equipment and the terminal after the receiving unit receives the data frame.

8. The terminal according to claim 7, wherein the grouping information specifically includes: the unit channel identifier of each unit channel used by the plurality of terminals and the terminal identifier sequence of each terminal corresponding to each unit channel identifier and using the unit channel identified by the unit channel identifier are sequentially arranged;

the receiving unit is specifically configured to: receiving the data frame sent by the network equipment on a current unit channel used by the terminal;

the target receiving terminal information specifically includes: in the grouping information, the terminal identifier of the target receiving terminal is in an order in the terminal identifier sequence corresponding to the unit channel identifier of the unit channel used by the target receiving terminal.

9. The terminal of claim 7, wherein the network device performs data transmission with the plurality of terminals in a MU-MIMO manner, the plurality of terminals belong to N MU-MIMO groups, each of the first N-1 MU-MIMO groups includes K terminals of the plurality of terminals, the nth MU-MIMO group includes M terminals of the plurality of terminals, and the total number of the plurality of terminals is K (N-1) + M; in the grouping information, in the terminal identification sequences of the multiple terminals, the K terminals identified by the first K terminal identifications belong to a first MU-MIMO group, the K terminals identified by the next K terminal identifications belong to a second MU-MIMO group, and so on, and the M terminals identified by the last M terminal identifications belong to an nth MU-MIMO group; wherein K, M, N is a positive integer, M is not greater than K;

the target receiving terminal information specifically includes: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the sequence number of a target MU-MIMO group in the N MU-MIMO groups, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

the data frame is sent to each terminal in the target MU-MIMO group by the network device, and the data in the data frame is placed according to a predetermined sequence between the network device and each terminal in the target MU-MIMO group;

the processing unit is specifically configured to: and if the data frame is determined to contain the data sent to the terminal, acquiring the data sent to the terminal from the data frame according to the sequence agreed by the network equipment and the terminal in advance after the receiving unit receives the data frame.

10. A terminal, comprising:

a receiving unit, configured to receive packet information sent by a network device, where the packet information includes: the network equipment divides a plurality of scheduled terminals into a group identifier of each group of a plurality of groups and comprises a terminal identifier sequence corresponding to each group identifier, and the terminal identifier sequence comprises the terminal identifiers of the terminals in the groups identified by the group identifiers which are arranged in sequence;

the processing unit is used for determining the current grouping identification and the current terminal information; wherein the current group identification is: in the grouping information, a grouping identifier corresponding to a terminal identifier of the terminal; the current terminal information is: in the grouping information, the order of the terminal identifier of the terminal in the terminal identifier sequence corresponding to the current grouping identifier;

the receiving unit is further configured to: receiving a data frame sent by the network equipment, wherein the data frame carries a target grouping identifier and target receiving terminal information; the target group identifier is a group identifier of a group to which a target receiving terminal sent by the data frame belongs; the target receiving terminal information is the sequence of the terminal identification of the target receiving terminal in the terminal identification sequence corresponding to the group identification of the group to which the target receiving terminal belongs;

the processing unit is further to: if the current grouping identification is the same as the target grouping identification and the current terminal information is the same as the target receiving terminal information, determining that the data frame comprises data sent to the terminal, and acquiring the data sent to the terminal from the data frame;

the network device and the plurality of terminals perform data transmission in a multi-user multi-input multi-output (MU-MIMO) mode, each terminal in each group in the plurality of groups belongs to at least one MU-MIMO group, and the terminal identification sequence comprises MU-MIMO group identifications of the MU-MIMO group to which each terminal in the group identified by the group identification belongs, wherein the MU-MIMO group identifications are sequentially arranged;

the data frame is sent to each terminal in a target MU-MIMO group by the network device, the data in the data frame is placed according to a predetermined sequence between the network device and each terminal in the target MU-MIMO group, and the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

the processing unit is specifically configured to: and if the data frame is determined to contain the data sent to the terminal, acquiring the data sent to the terminal from the data frame according to the sequence agreed by the network equipment and the terminal in advance after the data frame is received.

11. The terminal of claim 10,

in the plurality of groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping information specifically includes: a group identifier of each group, a unit channel identifier of each unit channel used by each terminal included in the group identified by the group identifier corresponding to each group identifier, and a terminal identifier sequence of each terminal using the unit channel identified by the unit channel identifier in the group identified by the group identifier arranged in sequence corresponding to each unit channel identifier corresponding to each group identifier;

the target receiving terminal information specifically includes: in the grouping information, the terminal identifier of the target receiving terminal is the order in the terminal identifier sequence corresponding to the unit channel identifier of the target unit channel used by the target receiving terminal in the grouping to which the target receiving terminal belongs;

the receiving unit is specifically configured to: and receiving the data frame sent by the network equipment on the current unit channel used by the terminal.

12. The terminal of claim 10, wherein the network device performs data transmission with the plurality of terminals in a MU-MIMO manner, and each terminal in each of the plurality of packets belongs to at least one MU-MIMO group;

for any one of the plurality of groups, if the terminal in the group belongs to N MU-MIMO groups, each of the first N-1 MU-MIMO groups includes K terminals in the group, the nth MU-MIMO group includes M terminals in the group, and the group has K (N-1) + M terminals in total, then in the sequence of terminal identifications of the terminals belonging to the group, the K terminals identified by the first K terminal identifications belong to a first MU-MIMO group, the K terminals identified by the next K terminal identifications belong to a second MU-MIMO group, and so on, and the M terminals identified by the last M terminal identifications belong to the nth MU-MIMO group; wherein K, M, N is a positive integer, M is not greater than K;

the target receiving terminal information specifically includes: in the grouping information, the terminal identification of the first terminal in the target MU-MIMO group is in the order of the terminal identification sequence corresponding to the grouping identification of the group to which the target MU-MIMO group belongs; or the sequence number of a target MU-MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

the data frame is sent to each terminal in the target MU-MIMO group by the network device, and the data in the data frame is placed according to a predetermined sequence between the network device and each terminal in the target MU-MIMO group;

the processing unit is specifically configured to: and if the data frame is determined to contain the data sent to the terminal, acquiring the data sent to the terminal from the data frame according to the sequence agreed by the network equipment and the terminal in advance after the data frame is received.

13. A method of data transmission, comprising:

sending grouping information to a plurality of terminals scheduled by current network equipment, wherein the grouping information comprises a terminal identification sequence which comprises terminal identifications of the plurality of terminals arranged in sequence;

sending a data frame, wherein the data frame carries target receiving terminal information used for indicating a target receiving terminal, and the target receiving terminal information is the sequence of a terminal identifier of the target receiving terminal in the terminal identifier sequence;

performing data transmission between the current network device and the plurality of terminals in a multi-user multi-input multi-output (MU-MIMO) mode, wherein the plurality of terminals belong to at least one MU-MIMO group, and the terminal identification sequence comprises sequentially arranged MU-MIMO group identifications of the MU-MIMO groups to which the plurality of terminals belong;

transmitting the data frame, including: and sending the data frame to each terminal in a target MU-MIMO group, wherein the data in the data frame is placed according to a predetermined sequence between the current network device and each terminal in the target MU-MIMO group, and the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

14. The method according to claim 13, wherein the grouping information specifically includes: the unit channel identifier of each unit channel used by the plurality of terminals and the terminal identifier sequence of each terminal corresponding to each unit channel identifier and using the unit channel identified by the unit channel identifier are sequentially arranged;

transmitting the data frame, including: sending the data frame to the target receiving terminal on a target unit channel, wherein the target unit channel is a unit channel used by the target receiving terminal;

the target receiving terminal information specifically includes: in the grouping information, the terminal identifier of the target receiving terminal is in the order of the terminal identifier sequence corresponding to the unit channel identifier of the target unit channel.

15. The method of claim 13, wherein the current network device performs data transmission with the plurality of terminals in MU-MIMO mode, the plurality of terminals belong to N MU-MIMO groups, each of the first N-1 MU-MIMO groups includes K terminals of the plurality of terminals, the nth MU-MIMO group includes M terminals of the plurality of terminals, and the total number of the plurality of terminals is K (N-1) + M; in the grouping information, in the terminal identification sequences of the multiple terminals, the K terminals identified by the first K terminal identifications belong to a first MU-MIMO group, the K terminals identified by the next K terminal identifications belong to a second MU-MIMO group, and so on, and the M terminals identified by the last M terminal identifications belong to an nth MU-MIMO group; wherein K, M, N is a positive integer, M is not greater than K;

the target receiving terminal information specifically includes: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the sequence number of a target MU-MIMO group in the N MU-MIMO groups, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

transmitting the data frame, including: and sending the data frame to each terminal in the target MU-MIMO group, wherein the data in the data frame is placed according to the order pre-agreed by the current network equipment and each terminal in the target MU-MIMO group.

16. A method of data transmission, comprising:

sending packet information to a plurality of terminals scheduled by current network equipment, wherein the packet information comprises: the current network equipment divides the plurality of terminals into a group identifier of each group of a plurality of groups, and comprises a terminal identifier sequence corresponding to each group identifier, and the terminal identifier sequence comprises the terminal identifiers of the terminals in the groups identified by the group identifiers which are arranged in sequence;

sending a data frame, wherein the data frame carries a target grouping identifier and target receiving terminal information used for indicating a target receiving terminal;

wherein, the target grouping identifier is the grouping identifier of the grouping to which the target receiving terminal belongs, and the target receiving terminal information is: in the grouping information, the terminal identification of the target receiving terminal is in the order in the terminal identification sequence corresponding to the grouping identification of the group to which the target receiving terminal belongs;

the current network equipment and the plurality of terminals adopt an MU-MIMO mode to carry out data transmission, each terminal in each group in the plurality of groups belongs to at least one MU-MIMO group, corresponding to each group identification, the terminal identification sequence comprises the MU-MIMO group identifications of the MU-MIMO group to which each terminal in the group identified by the group identification belongs, which are arranged in sequence;

transmitting the data frame, including: and sending the data frame to each terminal in a target MU-MIMO group, wherein the data in the data frame is placed according to the preset sequence of the current network device and each terminal in the target MU-MIMO group, and the MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs.

17. The method of claim 16,

in the plurality of groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping information specifically includes: a group identifier of each group, a unit channel identifier of each unit channel used by each terminal included in the group identified by the group identifier corresponding to each group identifier, and a terminal identifier sequence of each terminal using the unit channel identified by the unit channel identifier in the group identified by the group identifier arranged in sequence corresponding to each unit channel identifier corresponding to each group identifier;

the target receiving terminal information specifically includes: in the grouping information, the terminal identifier of the target receiving terminal is the order in the terminal identifier sequence corresponding to the unit channel identifier of the target unit channel used by the target receiving terminal in the grouping to which the target receiving terminal belongs;

transmitting the data frame, including: and sending the data frame to the target receiving terminal on the target unit channel.

18. The method of claim 16, wherein the current network device performs data transmission with the plurality of terminals in a MU-MIMO manner, and each terminal in each of the plurality of packets belongs to at least one MU-MIMO group;

for any one of the plurality of groups, if the terminal in the group belongs to N MU-MIMO groups, each of the first N-1 MU-MIMO groups includes K terminals in the group, the nth MU-MIMO group includes M terminals in the group, and the group has K (N-1) + M terminals in total, then, in the sequence of terminal identifications of the terminals belonging to the group, the K terminals identified by the first K terminal identifications belong to a first MU-MIMO group, the K terminals identified by the next K terminal identifications belong to a second MU-MIMO group, and so on, and the M terminals identified by the last M terminal identifications belong to the nth MU-MIMO group; wherein K, M, N is a positive integer, M is not greater than K;

the target receiving terminal information specifically includes: in the grouping information, the terminal identification of the first terminal in the target MU-MIMO group is in the order of the terminal identification sequence corresponding to the grouping identification of the group to which the target MU-MIMO group belongs; or the sequence number of a target MU-MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

sending a data frame to the target receiving terminal, including: and sending the data frame to each terminal in the target MU-MIMO group, wherein the data in the data frame is placed according to the order pre-agreed by the network equipment and each terminal in the target MU-MIMO group.

19. A method of data transmission, comprising:

receiving grouping information sent by network equipment, wherein the grouping information comprises a terminal identification sequence which comprises terminal identifications of a plurality of terminals scheduled by the network equipment in sequential arrangement;

determining current terminal information, wherein the current terminal information is the sequence of the terminal identifier of the current terminal in the terminal identifier sequence in the grouping information;

receiving a data frame sent by the network device, where the data frame carries target receiving terminal information used for indicating a target receiving terminal to which the data frame is sent, where the target receiving terminal information is an order of terminal identifiers of the target receiving terminals in the group information in the terminal identifier sequence;

if the current terminal information is the same as the target receiving terminal information, determining that a data frame comprises data sent to the current terminal, and obtaining the data sent to the current terminal from the data frame;

the network equipment and the plurality of terminals adopt a multi-user multi-input multi-output MU-MIMO mode to carry out data transmission, the plurality of terminals belong to at least one MU-MIMO group, and the terminal identification sequence comprises sequentially arranged MU-MIMO group identifications of the MU-MIMO groups to which the plurality of terminals belong;

the data frame is sent to each terminal in a target MU-MIMO group by the network device, the data in the data frame is placed according to a predetermined sequence between the network device and each terminal in the target MU-MIMO group, and the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

acquiring data sent to the current terminal from the data frame, wherein the data acquisition comprises the following steps: and acquiring data sent to the current terminal from the data frame according to a sequence agreed by the network equipment and the current terminal in advance.

20. The method of claim 19, wherein the grouping information specifically includes: the unit channel identifier of each unit channel used by the plurality of terminals and the terminal identifier sequence of each terminal corresponding to each unit channel identifier and using the unit channel identified by the unit channel identifier are sequentially arranged;

receiving a data frame sent by the network device, including: receiving the data frame sent by the network equipment on a current unit channel used by the current terminal;

the target receiving terminal information specifically includes: in the grouping information, the terminal identifier of the target receiving terminal is in an order in the terminal identifier sequence corresponding to the unit channel identifier of the unit channel used by the target receiving terminal.

21. The method of claim 19, wherein the network device performs data transmission with the plurality of terminals in MU-MIMO mode, the plurality of terminals belong to N MU-MIMO groups, each of the first N-1 MU-MIMO groups includes K terminals of the plurality of terminals, the nth MU-MIMO group includes M terminals of the plurality of terminals, and the total number of the plurality of terminals is K (N-1) + M; in the grouping information, in the terminal identification sequences of the multiple terminals, the K terminals identified by the first K terminal identifications belong to a first MU-MIMO group, the K terminals identified by the next K terminal identifications belong to a second MU-MIMO group, and so on, and the M terminals identified by the last M terminal identifications belong to an nth MU-MIMO group; wherein K, M, N is a positive integer, M is not greater than K;

the target receiving terminal information specifically includes: in the grouping information, the order of the terminal identification of the first terminal in the target MU-MIMO group in the terminal identification sequence; or the sequence number of a target MU-MIMO group in the N MU-MIMO groups, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

the data frame is sent to each terminal in the target MU-MIMO group by the network device, and the data in the data frame is placed according to a predetermined sequence between the network device and each terminal in the target MU-MIMO group;

acquiring data sent to the current terminal from the data frame, wherein the data acquisition comprises the following steps: and acquiring data sent to the current terminal from the data frame according to a sequence agreed by the network equipment and the current terminal in advance.

22. A method of data transmission, comprising:

receiving packet information sent by a network device, wherein the packet information comprises: the network equipment divides a plurality of scheduled terminals into a group identifier of each group of a plurality of groups and comprises a terminal identifier sequence corresponding to each group identifier, and the terminal identifier sequence comprises the terminal identifiers of the terminals in the groups identified by the group identifiers which are arranged in sequence;

determining a current grouping identifier and current terminal information; wherein the current group identification is: in the grouping information, a grouping identifier corresponding to a terminal identifier of a current terminal; the current terminal information is: in the grouping information, the order of the terminal identifier of the current terminal in the terminal identifier sequence corresponding to the current grouping identifier;

receiving a data frame sent by the network equipment, wherein the data frame carries a target grouping identifier and target receiving terminal information; the target group identifier is a group identifier of a group to which a target receiving terminal sent by the data frame belongs; the target receiving terminal information is the sequence of the terminal identification of the target receiving terminal in the terminal identification sequence corresponding to the group identification of the group to which the target receiving terminal belongs;

if the current grouping identification is the same as the target grouping identification and the current terminal information is the same as the target receiving terminal information, determining that the data frame comprises data sent to the current terminal, and acquiring the data sent to the current terminal from the data frame;

the network device and the plurality of terminals perform data transmission in a multi-user multi-input multi-output (MU-MIMO) mode, each terminal in each group in the plurality of groups belongs to at least one MU-MIMO group, and the terminal identification sequence comprises MU-MIMO group identifications of the MU-MIMO group to which each terminal in the group identified by the group identification belongs, wherein the MU-MIMO group identifications are sequentially arranged;

the data frame is sent to each terminal in a target MU-MIMO group by the network device, the data in the data frame is placed according to a predetermined sequence between the network device and each terminal in the target MU-MIMO group, and the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

acquiring data sent to the current terminal from the data frame, wherein the data acquisition comprises the following steps: and acquiring data sent to the current terminal from the data frame according to a sequence agreed by the network equipment and the current terminal in advance.

23. The method of claim 22,

in the plurality of groups, the terminals in each group use at least one unit channel, and each terminal using one unit channel belongs to at least one group; the grouping information specifically includes: a group identifier of each group, a unit channel identifier of each unit channel used by each terminal included in the group identified by the group identifier corresponding to each group identifier, and a terminal identifier sequence of each terminal using the unit channel identified by the unit channel identifier in the group identified by the group identifier arranged in sequence corresponding to each unit channel identifier corresponding to each group identifier;

the target receiving terminal information specifically includes: in the grouping information, the terminal identifier of the target receiving terminal is the order in the terminal identifier sequence corresponding to the unit channel identifier of the target unit channel used by the target receiving terminal in the grouping to which the target receiving terminal belongs;

receiving a data frame sent by the network device, including: and receiving the data frame sent by the network equipment on the current unit channel used by the current terminal.

24. The method of claim 22, wherein the network device performs data transmission with the plurality of terminals in a MU-MIMO manner, and each terminal in each of the plurality of packets belongs to at least one MU-MIMO group;

for any one of the plurality of groups, if the terminal in the group belongs to N MU-MIMO groups, each of the first N-1 MU-MIMO groups includes K terminals in the group, the nth MU-MIMO group includes M terminals in the group, and the group has K (N-1) + M terminals in total, then in the sequence of terminal identifications of the terminals belonging to the group, the K terminals identified by the first K terminal identifications belong to a first MU-MIMO group, the K terminals identified by the next K terminal identifications belong to a second MU-MIMO group, and so on, and the M terminals identified by the last M terminal identifications belong to the nth MU-MIMO group; wherein K, M, N is a positive integer, M is not greater than K;

the target receiving terminal information specifically includes: in the grouping information, the terminal identification of the first terminal in the target MU-MIMO group is in the order of the terminal identification sequence corresponding to the grouping identification of the group to which the target MU-MIMO group belongs; or the sequence number of a target MU-MIMO group in each MU-MIMO group in the group to which the target MU-MIMO group belongs, wherein the target MU-MIMO group is the MU-MIMO group to which the target receiving terminal belongs;

the data frame is sent to each terminal in the target MU-MIMO group by the network device, and the data in the data frame is placed according to a predetermined sequence between the network device and each terminal in the target MU-MIMO group;

acquiring data sent to the current terminal from the data frame, wherein the data acquisition comprises the following steps: and acquiring data sent to the current terminal from the data frame according to a sequence agreed by the network equipment and the current terminal in advance.

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