WO2016037481A1 - 一种实现并行多用户数据传输的方法及主节点 - Google Patents

一种实现并行多用户数据传输的方法及主节点 Download PDF

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Publication number
WO2016037481A1
WO2016037481A1 PCT/CN2015/075410 CN2015075410W WO2016037481A1 WO 2016037481 A1 WO2016037481 A1 WO 2016037481A1 CN 2015075410 W CN2015075410 W CN 2015075410W WO 2016037481 A1 WO2016037481 A1 WO 2016037481A1
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Prior art keywords
field
acknowledgment
user
uplink
paging
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PCT/CN2015/075410
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English (en)
French (fr)
Inventor
邢卫民
吕开颖
田开波
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中兴通讯股份有限公司
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Priority to US15/510,220 priority Critical patent/US10439768B2/en
Priority to EP15839908.9A priority patent/EP3193473B1/en
Publication of WO2016037481A1 publication Critical patent/WO2016037481A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1614—Details of the supervisory signal using bitmaps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0093—Point-to-multipoint

Definitions

  • This article covers the field of wireless LAN technology.
  • WLAN Wireless Local Area Networks
  • the IEEE Standards Organization has established a related task force to address the WLAN network efficiency issues.
  • parallel multi-user data transmission as an alternative technology to solve network efficiency has attracted extensive attention and research.
  • the parallel multi-user data transmission technology studied by the HEW group includes multi-user multiple input multiple output (MU-MIMO, Multi-User MIMO) technology for spatial domain multiple access, orthogonal frequency division multiple access (OFDMA) for frequency domain multiple access. Frequency Division Multiple Access technology, and Interleave-Division Multiple-Access (IDMA) technology.
  • MU-MIMO multi-user multiple input multiple output
  • OFDMA orthogonal frequency division multiple access
  • IDMA Interleave-Division Multiple-Access
  • FIG. 1 is a schematic diagram of the composition of a basic service set in a WLAN network.
  • an access point site AP, Access Point
  • multiple non-access point sites associated with the AP are shown.
  • non-AP STA, non-AP Station constitutes a basic service set (BSS, Basic Service Set).
  • BSS Basic Service Set
  • the parallel multi-user data transmission in the WLAN network is that multiple secondary nodes simultaneously send data to the primary node, also referred to as uplink multi-user data transmission; or, the primary node simultaneously sends data to multiple secondary nodes, also called Downlink multi-user data transmission.
  • the primary node generally refers to an AP or a non-AP STA with special capabilities
  • the secondary node generally refers to a non-AP STA.
  • the uplink multi-user data transmission used by the WLAN network is parallel multi-user data transmission, which can effectively improve the efficiency of the WLAN network.
  • parallel multi-user data transmission There is no specific technical solution for implementing parallel multi-user data transmission.
  • problems to be solved such as how the AP schedules multiple uplink users and responds to data and completes multi-frame transmission.
  • uplink multi-user data is received incorrectly.
  • How to perform error recovery, that is, retransmission how to use flexible scheduling of users with less overhead, to maximize resource utilization.
  • Embodiments of the present invention provide a method and a master node for implementing parallel multi-user data transmission, which can ensure parallel multi-user data transmission in a WLAN network.
  • An embodiment of the present invention provides a method for implementing parallel multi-user data transmission, including: the primary node acquires a transmission opportunity TXOP or a service period SP;
  • the master node uses the control/management frame carrying the uplink multiple user control information to instruct the secondary node to perform uplink multi-user data transmission during the transmission opportunity or service period.
  • the method also includes:
  • the master node receives uplink parallel multi-user data, and uses the control/management frame carrying multiple user data acknowledgement/paging information to confirm the received uplink parallel multi-user data;
  • control/management frame carrying the uplink multiple user control information one or more users are scheduled to perform uplink multi-user data transmission for the first time in the multi-frame transmission.
  • the method further includes: the master node instructing the user to perform uplink retransmission using a control/management frame carrying uplink user control information.
  • the parallel multi-user data transmission is in a transmission opportunity TXOP or a service period SP;
  • the method further includes that the time occupied by the multi-user multi-frame exchange in the parallel multi-user data transmission is within a preset time threshold, wherein the time threshold is a limit value of the length of time of the TXOP or the service period.
  • the time threshold of the TXOP or the service period is a fixed length of time; or,
  • the time threshold of the TXOP or service period is determined by the data attributes of the uplink multi-user, or the site attributes, or the quality of service QoS requirements.
  • the control/management frame includes at least a frame header and a frame body; wherein
  • the frame header includes: a sending address field, a receiving address field, and a frame control field, where the sending address field is used to indicate address information of a device that sends a feedback frame, and the receiving address field is used to indicate destination information of the received feedback frame, and The frame control field is used to indicate that the frame in which it is located is a feedback frame carrying multiple user data acknowledgement/paging information;
  • the frame body includes: an acknowledgment/paging control field, and M null acknowledgment/paging information fields and N acknowledgment/paging information fields, wherein each acknowledgment/paging information field or null acknowledgment/paging information field corresponds to One user in the uplink multi-user data transmission, the expression "M+N" indicates the total number of users;
  • the null acknowledgement/paging information field is used to instruct the uplink multi-user to send uplink data when the transmission period starts, or to schedule one or some users to perform uplink multi-user data transmission for the first time in the multi-frame transmission, or to indicate the user. Perform an uplink retransmission.
  • the acknowledgment/paging control field includes: a frame format control field, and a user number field, wherein the frame format control field is used to indicate that the control/management frame is used for confirming uplink multi-user data. / paging; and the number of users field is used to indicate the number of the acknowledgment/paging information field and the null acknowledgment/paging information field.
  • the acknowledgment/paging control field includes: a frame format control field, a number of users field, and a paging indication field, where the frame format control field is used to indicate that the control/management frame is used for uplink ACK/Paging of multi-user data; the number of users field is used to indicate how many acknowledgment/paging information fields and how many empty acknowledgment/paging information fields are in the user number field, the number of users field The value is the number of users in the uplink multi-user data transmission "M+N"; and the paging indication field is used to indicate whether the corresponding user can also send the uplink data in the next uplink multi-user radio frame. .
  • the number of users indicating the uplink multi-user data transmission "M+N" includes:
  • the value of the field indication (M+N) is indicated by the field in the acknowledgment/paging control field, the empty acknowledgment/paging information field or the acknowledgment/paging information field indicating the format used by itself by the bit.
  • the arrangement of the M null acknowledgment/paging information fields and the N acknowledgment/paging information fields in the control/management frame is:
  • the N acknowledgment/paging information fields are set in front, and the M acknowledgment/paging information fields are set after the N acknowledgment/paging information fields;
  • the M null acknowledgment/paging information fields are set in front, and the N acknowledgment/paging information fields are set after the M null acknowledgment/paging information fields.
  • the acknowledgment/paging information field includes: a user identification field, and a paging indication field;
  • a user identification field configured to represent a user corresponding to the acknowledgment/paging information field
  • a paging indicator field is used to indicate whether the user can also send uplink data in the next uplink multi-user radio frame.
  • the acknowledgment/paging information field includes: a user identification field, and a resource indication field; wherein
  • a user identification field configured to represent a user corresponding to the acknowledgment/paging information field
  • the resource indication field is used to indicate the resource range used by the user that allows uplink data transmission in the next uplink multi-user data transmission.
  • the acknowledgment/paging information field further includes: an acknowledgment information bitmap, a data flow identification field, and an acknowledgment information sequence control information; wherein
  • the acknowledgement information bitmap is a bit map, and each bit corresponds to an error indication of a data unit in the data stream;
  • a data flow identifier field configured to indicate an identifier of a data stream in which the data unit corresponding to the error indication in the acknowledgement information bitmap is located;
  • the confirmation information sequence control information is used to indicate the sequence number range of the data unit corresponding to the error indication in the confirmation information bitmap.
  • the null acknowledgement/paging information field includes: a user identification field and a resource field, and the user identifier
  • the identification field is used to indicate the identifier of the user
  • the resource field is used to indicate the resource used by the indicated user to send uplink data or uplink retransmission.
  • the null acknowledgement/paging information field does not include a confirmation information bitmap.
  • the null acknowledgement/paging information field does not include a confirmation information bitmap, and acknowledge information sequence control information.
  • the null acknowledgement/paging information field further includes uplink transmission parameter information indicating that the uplink transmission is to be modulated;
  • the uplink transmission parameters include: transmit power control, and/or frequency offset pre-correction, and/or delay parameters, and/or uplink/air domain resource range parameters.
  • the frame header further includes a time length field for determining the length of the uplink multi-user radio frame in the next uplink multi-user data transmission by the user indicated as being capable of transmitting the uplink data.
  • the present invention also provides a master node, including at least an acquisition module, and a control module;
  • the obtaining module is configured to acquire a transmission opportunity or a service period
  • the control module is configured to use a control/management frame carrying uplink user control information to instruct the secondary node to perform uplink multi-user data transmission during a transmission opportunity or a service period.
  • the obtaining module is further configured to receive uplink parallel multi-user data
  • the control module is further configured to: confirm the received uplink parallel multi-user data by using a control/management frame carrying multiple user data acknowledgement/paging information; and use the control that carries the uplink multiple user control information/ The management frame schedules one or more users for uplink multi-user data transmission for the first time in the multi-frame transmission.
  • the control module is further configured to: the master node instructs the user to perform uplink retransmission using a control/management frame carrying uplink user control information.
  • the control/management frame includes a frame header and a frame body; wherein
  • the frame header includes: a sending address field, a receiving address field, and a frame control field, where the sending address field is used to indicate address information of a device that sends a feedback frame, and the receiving address field is used to indicate destination information of the received feedback frame, And the frame control field is used to indicate that the frame in which it is located is a feedback frame carrying multiple user data acknowledgement/paging information;
  • the frame body includes: an acknowledgment/paging control field, and M null acknowledgment/paging information fields and N acknowledgment/paging information fields, wherein each acknowledgment/paging information field or null acknowledgment/paging information field corresponds to One user in the uplink multi-user data transmission, the expression "M+N" indicates the total number of users;
  • the null acknowledgement/paging information field is used to instruct the uplink multi-user to send uplink data when the transmission period starts, or to schedule one or some users to perform uplink multi-user data transmission for the first time in the multi-frame transmission, or to indicate the user. Perform an uplink retransmission.
  • the acknowledgment/paging control field includes: a frame format control field, and a user number field, wherein the frame format control field is used to indicate that the control/management frame is used for confirming uplink multi-user data. / paging; and the number of users field is used to indicate the number of the acknowledgment/paging information field and the null acknowledgment/paging information field.
  • the acknowledgment/paging control field includes: a frame format control field, a user number field, and a paging indication field, where the frame format control field is used to indicate that the control/management frame is used for uplink Confirmation/Paging of User Data; the number of users field is used to indicate how many acknowledgment/paging information fields and how many empty acknowledgment/paging information fields are followed, and the value of the number of users field is an uplink multi-user The number of users in the data transmission "M+N"; and the paging indication field is used to indicate whether each user can also send a paging indication field of uplink data in the next uplink multi-user radio frame.
  • the frame format control field is used to indicate that the control/management frame is used for uplink Confirmation/Paging of User Data
  • the number of users field is used to indicate how many acknowledgment/paging information fields and how many empty acknowledgment/paging information fields are followed, and the value of the number of users field is an uplink multi-user The number of users in the data transmission "
  • the number "M+N" indicating the number of users in the uplink multi-user data transmission includes:
  • the value of the field indication (M+N) is indicated by the field in the acknowledgment/paging control field, the empty acknowledgment/paging information field or the acknowledgment/paging information field indicating the format used by itself by the bit.
  • the arrangement of the M null acknowledgment/paging information fields and the N acknowledgment/paging information fields in the control/management frame is:
  • the N acknowledgment/paging information fields are set in front, and the M acknowledgment/paging information fields are set after the N acknowledgment/paging information fields;
  • the M null acknowledgment/paging information fields are set in front, and the N acknowledgment/paging information fields are set after the M null acknowledgment/paging information fields.
  • the acknowledgment/paging information field includes: a user identification field, a resource indication field, and a paging indication field;
  • a user identification field configured to represent a user corresponding to the acknowledgment/paging information field
  • a resource indication field configured to indicate a resource range used by the user that allows uplink data transmission in the next uplink multi-user data transmission
  • a paging indication field is configured to indicate whether the user can also send uplink data in a next uplink multi-user radio frame.
  • the acknowledgment/paging information field includes: a user identification field, and a resource indication field;
  • a user identification field configured to represent a user corresponding to the acknowledgment/paging information field
  • the resource indication field is used to indicate the resource range used by the user that allows uplink data transmission in the next uplink multi-user data transmission.
  • the confirmation/paging information field further includes: an acknowledgement information bitmap, a data flow identification field, and an acknowledgement information sequence control information; wherein
  • the acknowledgement information bitmap is a bit map, and each bit corresponds to an error indication of a data unit in the data stream;
  • a data flow identifier field used to indicate an identifier of a data stream in which the data unit corresponding to the error indication in the acknowledgement information bitmap is located;
  • the confirmation information sequence control information is used to indicate the sequence number range of the data unit corresponding to the error indication in the confirmation information bitmap.
  • the empty acknowledgment/paging information field includes: a user identification field and a resource field, where the user indication field is used to indicate an identifier of the user; and the resource field is used to indicate that the indicated user sends uplink data or an uplink retransmission Resources used.
  • the null acknowledgement/paging information field does not include a confirmation information bitmap.
  • the null acknowledgement/paging information field does not include a confirmation information bitmap, and acknowledge information sequence control information.
  • the null acknowledgement/paging information field further includes an uplink sending parameter message indicating that the uplink transmission is to be modulated. interest;
  • the uplink transmission parameters include: transmission power control, and/or frequency offset pre-correction, and/or delay adjustment.
  • the frame header further includes a time length field for determining the length of the uplink multi-user radio frame in the next uplink multi-user data transmission by the user indicated as being capable of transmitting the uplink data.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions for performing the above method.
  • the technical solution of the present application includes that the primary node acquires a transmission opportunity or a service period; the primary node uses a control/management frame carrying uplink multiple user control information, and instructs the secondary node to perform uplink uplink during the transmission opportunity or the service period.
  • User data is sent.
  • the method of the embodiment of the invention implements the response of the AP to data of multiple uplink users, and ensures the implementation of parallel multi-user data transmission in the WLAN network.
  • the null acknowledgment/paging information field is set in the control/management frame of the embodiment of the present invention, it is provided that the uplink multi-user is sent to transmit uplink data at the beginning of the transmission period, or is scheduled for the first time in the multi-frame transmission. Some users perform uplink multi-user data transmission or indicate the implementation scheme of the user to perform uplink retransmission.
  • 1 is a schematic diagram of the composition of a basic service set in a WLAN network
  • FIG. 2 is a flowchart of a method for implementing parallel multi-user data transmission in an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a composition of a radio frame carrying multiple user data acknowledgement/paging information in an embodiment of the present invention
  • FIG. 4 is a schematic diagram showing the composition of an acknowledgment/paging control field and an acknowledgment/paging information field in a frame body according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram showing the composition of a frame body hollow confirmation/paging information field according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a structure of a master node according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a first embodiment for implementing parallel multi-user data transmission according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a second embodiment for implementing parallel multi-user data transmission according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a third embodiment for implementing parallel multi-user data transmission according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for implementing parallel multi-user data transmission according to an embodiment of the present invention. As shown in FIG. 2, the method includes the following steps:
  • Step 200 The master node acquires a transmission opportunity TXOP or a service period.
  • the length of the TXOP or the service period (SP) is limited, that is, the time threshold, and the time occupied by the multi-user multi-frame exchange cannot exceed the time threshold.
  • the time threshold of the TXOP or the service period may be a fixed length of time, or may be determined by an uplink multi-user data attribute, or a site attribute, or a quality of service (QoS) requirement.
  • QoS quality of service
  • one TXOP sends a QoS data
  • the QoS level and the service transmission attribute determine the length of time that can be continuously transmitted, but the uplink multi-user involves data of multiple sites, different There may be multiple QoS requirements for the site.
  • the time threshold at this time should be considered jointly according to the needs of multiple users.
  • QoS QoS
  • time threshold or the like may be determined according to data QoS of a specific station STA, such as STA1.
  • Step 201 The master node uses the control/management frame carrying the uplink multiple user control information to instruct the secondary node to perform uplink multi-user data transmission during the transmission opportunity or the service period.
  • the master node receives the uplink parallel multi-user data, and confirms the received uplink parallel multi-user data by using a control/management frame carrying multiple user data acknowledgement/paging information;
  • the one or more users are scheduled to perform uplink multi-user data transmission for the first time in the multi-frame transmission.
  • the method of the embodiment of the present invention further includes: the master node instructs the user to perform uplink retransmission using a control/management frame carrying uplink user control information.
  • the specific composition of the control/management frame in this step is as shown in FIG. 3, and includes at least a frame header and a frame body;
  • a frame header including a transmission address field, a reception address field, a frame control field, and a duration field, wherein
  • a sending address field for indicating address information of a device that sends a control/management frame
  • the receiving address field is used to indicate the destination information of the receiving control/management frame.
  • the destination information of the receiving address field may be set to a broadcast or multicast group address, and when the receiving address field is set to multicast
  • the destination information is multiple users of uplink multi-user data transmission; here, multiple sites (corresponding to multiple users) and a specific multicast address may be bound in advance through management frame interaction, in the feedback frame.
  • the receiving address can be set to the multicast address, and the address generally refers to the MAC address.
  • the frame control field is used to indicate that the frame in which it is located is a control/management frame carrying uplink user control information, and the frame control field includes parameters such as a frame type/subframe type. Or, together with the frame format control field in the acknowledgment/paging control field of the frame body, the frame in which the frame is located is a control/management frame carrying uplink user control information.
  • the Duration field is used to determine the length of the radio frame of the multi-user data in the next uplink multi-user data transmission.
  • the frame body includes an acknowledgment/paging control field, and, M empty acknowledgment/paging information fields and N acknowledgment/paging information fields.
  • Each empty acknowledgment/paging information field or acknowledgment/paging information field corresponds to one user, and (M+N) is the total number of users indicated by the control/management frame in which the frame body is located, and both M and N can be 0. Or a positive integer; the length of the null acknowledgment/paging information field may be equal to the length of the acknowledgment/paging information field.
  • FIG. 4 is a schematic diagram showing the composition of an acknowledgment/paging control field and an acknowledgment/paging information field in a frame body according to an embodiment of the present invention, as shown in FIG.
  • the acknowledgment/paging control field includes: a frame format control field, and a number of users field, wherein the frame format control field is used to indicate that the control/management frame is used for acknowledgment/paging of uplink multi-user data; and the number of users field
  • the number of the acknowledgment/paging information field and the null acknowledgment/paging information field, and the value of the number of users field is the number of users (M+N) in the uplink multi-user data transmission, and M and N may be 0, can also be a positive integer;
  • the acknowledgment/paging control field includes: a frame format control field, and a number of users field, and a paging indication field;
  • the frame format control field is used to indicate that the control/management frame is used for acknowledgment/paging of uplink multi-user data; the number of users field is used to indicate how many acknowledgment/paging information fields and how many empty acknowledgments/paging are subsequently performed.
  • the information field, the number of users field is the number of users (M+N) in the uplink multi-user data transmission, M, N may be 0, or may be a positive integer; and the paging indicator field is used to indicate each Whether the user can also send uplink data in the next uplink multi-user radio frame.
  • the paging indicator field is true, indicating that the user can send uplink data in the next uplink multi-user radio frame; When the field is false, it indicates that the corresponding user cannot send uplink data in the next uplink multi-user radio frame.
  • the indicating the number of users (M+N) in the uplink multi-user data transmission includes: indicating the values of M and N, or the value of (M+N), or M by the fields in the acknowledge/paging control domain, respectively.
  • N For example, a field may be used to indicate M and N, respectively, or a commonly used indication method such as one of (M+N) and (M or N) may be used.
  • each empty acknowledgment/paging information field or acknowledgment/paging information field indicates the format used by itself by the bit. It should be noted that when using this indication method, since each information field has an indication of its own format, the null acknowledgement/paging information field and the acknowledgement/paging information field can be arbitrarily arranged, and only the total number of indications is required ( M+N).
  • the arrangement of the M null acknowledgment/paging information fields and the N acknowledgment/paging information fields in the control/management frame is: N acknowledgment/paging information fields are set in front, and M null acknowledgments / paging information field is set after the N acknowledgment/paging information fields; or, M empty acknowledgment/paging information fields are set in front, and N acknowledgment/paging information fields are set in the M null acknowledgments / After paging the information field.
  • the acknowledgment/paging information field includes: a user identification field, a resource indication field, and a paging indication field;
  • a user identifier field which is used to indicate a user corresponding to the acknowledgment/paging information field, and may be an association identifier (AID, Association Identify) of a user who sends uplink data, such as a secondary node;
  • AID Association Identify
  • the resource indication field is used to indicate the resource range used by the user who is allowed to perform uplink data transmission in the next uplink multi-user data transmission, where the resource may be a frequency domain, a time domain, a code domain, an air domain, and the like;
  • a paging indication field configured to indicate whether a user corresponding to the acknowledgment/paging information field can still send uplink data in a next uplink multi-user radio frame, optionally, the paging indication field is true, indicating that The user can send uplink data in the next uplink multi-user radio frame; when the paging indicator field is false, it indicates that the user cannot send uplink data in the next uplink multi-user radio frame. It should be noted that if a paging indication field is included in the acknowledgment/paging control field, the paging indication field may be omitted in the acknowledgment/paging information field.
  • the acknowledgement/paging information field further includes an acknowledgement information bitmap, a data flow identifier field, and an acknowledgement information sequence control information; wherein
  • the acknowledgement information bitmap is a bit map, and each bit corresponds to an error indication of a data unit in the data stream;
  • a data flow identifier field configured to indicate an identifier of a data stream in which the data unit corresponding to the error indication in the acknowledgement information bitmap is located;
  • the confirmation information sequence control information is used to indicate the sequence number range of the data unit corresponding to the error indication in the confirmation information bitmap.
  • FIG. 5 is a schematic diagram showing the composition of an empty acknowledgement/paging information field in a frame body according to an embodiment of the present invention, as shown in FIG.
  • the null acknowledgement/paging information field is used to instruct the uplink multi-user to send uplink data at the beginning of the transmission period, or to schedule one or more users for uplink multi-user data transmission for the first time in the multi-frame transmission, or to instruct the user to perform uplink weighting. pass.
  • the empty acknowledgment/paging information field includes: a user identification field and a resource field, where the user identification field is used to indicate an identifier of the user, which may be an AID of the station, etc.; the resource field is used to indicate that the indicated user sends uplink data or The resources used for uplink retransmission;
  • the null acknowledgement/paging information field does not include a confirmation information bitmap.
  • the null acknowledgement/paging information field further includes a data flow identifier and an acknowledgement information sequence control information, and a specific value or a reserved bit of these fields is used to indicate that the current domain is in the format of an empty acknowledgement/paging information field, that is, the null acknowledgement/paging
  • the information field does not include confirmation of whether the data is correctly received or not.
  • certain bits (segment indication) in the acknowledgment information sequence control information are fixedly set to 0, and for the null acknowledgment format, the The bit is set to a non-zero value to distinguish between the two information field formats; another example: or, each information field indicates the format used by itself by some bits.
  • the acknowledgment information bitmap therein is null, that is, set to all 0; the default paging indication is true or The paging indicator is set to true.
  • the null acknowledgement/paging information field further includes the access point AP instructing the STA to transmit uplink transmission parameter information to be modulated, wherein the uplink transmission parameter may include a delay parameter, and/or a frequency offset modulation parameter, and/or a transmission power. Parameters, etc.
  • the feedback frame in this step further includes a frame check, which is used to determine whether the frame is correctly received for verification. That is, the CRC check, how to implement the CRC check is not used to limit the scope of protection of the present invention, and details are not described herein again.
  • the null acknowledgement/paging information field does not include a confirmation information bitmap, and acknowledge information sequence control information.
  • the method of the embodiment of the invention implements the response of the AP to data of multiple uplink users, and ensures the implementation of parallel multi-user data transmission in the WLAN network. Moreover, since the null acknowledgement/paging information field is set in the control/management frame of the present invention, it is provided that the uplink multi-user is sent to transmit uplink data at the beginning of the transmission period, or one or more users are scheduled for the first time in the multi-frame transmission. Uplink multi-user data transmission, or a specific implementation scheme that instructs the user to perform uplink retransmission.
  • FIG. 6 is a schematic structural diagram of a structure of a master node according to an embodiment of the present invention. As shown in FIG. 6, at least an acquiring module and a control module are included;
  • the control module is configured to use the control/management frame carrying the uplink multiple user control information, and instruct the secondary node to perform uplink multi-user data transmission during the transmission opportunity or the service period.
  • the AP may exchange capability information with each non-AP STA, and the capability information includes an indication of whether to support the uplink multi-user transmission capability.
  • FIG. 7 is a schematic diagram of a first embodiment of implementing parallel multi-user data transmission according to an embodiment of the present invention. As shown in FIG. 7, in the first embodiment, it is assumed that the associated stations STA1 to STA4 support uplink multi-user data transmission, and STA1 ⁇ STA4 has reached a protocol or negotiation with the AP to support the use of control/management frames carrying uplink multiple user control information.
  • the special block confirmation frame is a special BA frame.
  • the AP gets a TXOP.
  • the uplink multi-user control information of STA1, STA2, STA3, and STA4 is carried in a special BA frame, and the format is determined to be the format of the null acknowledgement/paging domain.
  • the identifier of STA1 is indicated in the user identification field of the null acknowledgment/paging domain, and the STA1 is allowed to perform uplink multi-user transmission by default, that is, the paging indication is true by default, that is, STA1 can uplink.
  • the uplink multi-user radio frame 1 is sent in parallel.
  • the parameter information field and the resource field of the null acknowledgment/paging field respectively indicate the transmission parameters and resources of the STA1 uplink multi-user data transmission.
  • the processing procedure for STA2 to STA4 is similar, wherein it is assumed that the parameter information field and the resource field of the null acknowledgment/paging domain corresponding to STA4 do not indicate the transmission parameters and resources for uplink multi-user data transmission.
  • the sending parameters may include a delay parameter, a frequency offset modulation parameter, a power parameter, and the like;
  • the resource may be a resource such as a frequency domain, a time domain, a code domain, and an air partition domain.
  • the frame header includes a Duration field for determining the transmission time of the uplink multi-user radio frame 1 for uplink parallel transmission, and for avoiding site access other than STA1 to STA3.
  • the Duration value may be: a product value of a product of a constant 2 and a short interframe space (SIFS), a transmission time of a desired multi-user radio frame 2, and a sum of transmission times of feedback frames of the radio frame 2 .
  • the expected transmission time of the multi-user radio frame 2 is determined by the AP itself, and is a value calculated by a multi-user.
  • the sending time of the feedback frame of the radio frame 2 may be a time preset by the protocol (the feedback frame time is relatively fixed), or a time determined according to a preset rule, for example, the time of the next feedback frame may be defined as the current feedback.
  • STA1 to STA4 determine to include the null acknowledgement/paging information of the AP to allow uplink transmission, and then perform parallel uplink transmission multi-user wireless simultaneously after the short interframe space (SIFS, Short Interframe Space).
  • SIFS Short Interframe Space
  • Frame 1 the transmission time is determined according to the value of the Duration field in the special BA frame in this embodiment.
  • STA1 to STA3 send the uplink multi-user radio frame 1 according to the indication of the transmission parameter information field and the resource field.
  • the STA4 does not receive the indication of the transmission parameter information field and the resource field.
  • the STA4 can use the parameter and resource for the uplink multi-user transmission last time, or use the preset to perform the transmission of the radio frame 1.
  • a timer NAV, Netework Allocation Vector
  • NAV Netework Allocation Vector
  • the AP receives the uplink multi-user radio frame 1 and returns a feedback frame to each STA.
  • the frame type or format is a block acknowledgment (BA) frame
  • the BA frame includes acknowledgment/paging domain information for STA1 to STA4, that is, Corresponding to the block acknowledgment information of the data in the radio frame 1 transmitted by each of the STA1 to the STA4, and the paging indication information of the STA1 to STA4, assuming that the paging indication information of the STA1 to STA4 is set to be false, then
  • the second TXOP ends.
  • FIG. 8 is a schematic diagram of a second embodiment of implementing parallel multi-user data transmission according to the present invention. As shown in FIG. 8, it is assumed that STA1, STA2, and STA3 transmit uplink multi-user radio frames in parallel in one TXOP or service period.
  • the AP receives the multi-user radio frame 1 from STA1 to STA3 and transmits the feedback frame 1.
  • the frame type or format of the feedback frame 1 in this embodiment is set to a control/management frame of the uplink multi-user control information, that is, a special BA1 frame, optionally, by using a frame type/sub-frame in the frame control domain in the special BA1 frame.
  • the frame type is set to a block acknowledgment frame, which is implemented by setting the frame format control to the frame format of the control/management frame for the uplink multi-user control information in the control field of the acknowledgment/paging field, or using only the frame type/subframe
  • the type is implemented by setting the frame to a control/management frame of multi-user control information.
  • the acknowledgment information indicates that some or all of the radio frames 1 from STA1 to STA2 have been correctly received.
  • STA3 Data unit, and set the paging indication to true, allowing STA1 to STA2 to continue uplink multi-user data transmission; in addition, corresponding to STA3's null acknowledgement/paging field, indicating all data units in radio frame 1 from STA3 Error, but allowing STA3 error recovery means that STA3 can retransmit the uplink data.
  • STA1 to STA3 transmit a multi-user radio frame 2, in which STA3 retransmits the erroneous data in the radio frame 1.
  • the AP receives the multi-user radio frame 2 from STA1 to STA3 and transmits a feedback frame 2.
  • the feedback frame 2 has a frame type or a control/management frame whose format is set as uplink multi-user control information, that is, a special BA2 frame, and optionally, an acknowledgment/paging of STA1 to STA3 is included in the special BA2 frame, and is confirmed.
  • the confirmation message indicates that the radio frame from STA1 to STA3 has been correctly received 2
  • the paging indication of STA3 is set to false, and STA3 is terminated.
  • an empty acknowledgment/paging information field for STA4 is also included, which is used for scheduling the uplink multi-user data transmission for the first time in the TXOP or the service period.
  • the null acknowledgement/paging information field the identifier of the STA4 is indicated by the user identification field, and the transmission parameter information and the resource information are carried.
  • STA1, STA2, and STA4 transmit an uplink multi-user radio frame 3, wherein the STA4 transmits data according to the transmission parameter information and the resource information in the special BA2 frame.
  • the time length of the TXOP or the service period is a limited time threshold, and the time occupied by the multi-user multi-frame exchange cannot exceed the time threshold, that is, when STA1 to STA4 send the multi-user wireless.
  • the AP will search for all stations in the feedback frame of multi-user data acknowledgement/paging feedback to STA1 to STA4 in order to prevent the transmission time from exceeding the time threshold of the TXOP or the service period.
  • the call indication is set to false and the Duration value is set to 0 to end multi-user multi-frame transmission.
  • the time threshold of the TXOP or the service period may be a fixed length of time, or may be determined by an uplink multi-user data attribute, or a site attribute, or a QoS requirement.
  • FIG. 9 is a schematic diagram of a third embodiment for implementing parallel multi-user data transmission according to an embodiment of the present invention. As shown in FIG. 9, it is assumed that STA1, STA2, STA3, and STA4 send uplink multi-users in parallel in one TXOP or service period. Wireless frame.
  • the AP receives the multi-user radio frame 1 from STA1 to STA4, and feeds back a control/management frame carrying the uplink multi-user control information, that is, a special BA1 frame.
  • a special BA1 frame In the special BA1 frame, there is an acknowledgement/paging corresponding to STA1 to STA4.
  • the information field is used for data acknowledgement of the radio frame 1, and, in the third embodiment, the paging indicator corresponding to the STA4 is set to false, and the STA4 is not allowed to continue the transmission of the uplink data, but the corresponding one of the STA1 to STA3 Paging indications are set to true, that is, allowed STA1 to STA3 continue to perform uplink data transmission, and assume that a new resource is indicated to STA3 in the resource indication field.
  • the resource information indicates that STA3 can use the resource of STA4 plus its own resource.
  • STA1 to STA3 receive the SIFS after the special BA1 frame, and immediately transmit the uplink multi-user radio frame 2, wherein STA3 uses the new resource.
  • the AP After the AP sends the special BA1 frame, if it is judged that no paging data is received or it is judged that all the received paging data is wrong, the inter-frame spacing (PIFS, Point (coordination function) Interframe Space is determined at the point after the above judgment.
  • PIFS Point (coordination function) Interframe Space
  • the channel is detected during the competition backoff time. If the channel is idle, the BA2 frame is sent, and the error recovery process of STA1 to STA3 is triggered.
  • STA1 to STA3 immediately transmit the uplink multi-user radio frame 3 after receiving the special 2BA frame SIFS.
  • the AP After receiving the radio frame 3, the AP sends a special BA3 frame and ends the TXOP or service period with a special BA3 frame.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions for performing the above method.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • each device/function module/functional unit in the above embodiment When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the method and the master node for implementing parallel multi-user data transmission implement the response of the AP to data of multiple uplink users, and ensure the implementation of parallel multi-user data transmission in the WLAN network. Moreover, since the null acknowledgment/paging information field is set in the control/management frame of the embodiment of the present invention, it is provided that the uplink multi-user is sent to transmit uplink data at the beginning of the transmission period, or is scheduled for the first time in the multi-frame transmission. Some users perform uplink multi-user data transmission or indicate the implementation scheme of the user to perform uplink retransmission.

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Abstract

一种实现并行多用户数据传输的方法及主节点，包括主节点获取传输机会或服务期；主节点使用携带有上行多个用户控制信息的控制/管理帧，在传输机会或服务期内指示次节点进行上行多用户数据发送。本发明实施例的控制/管理帧中设置有空确认/寻呼信息域，提供了在传输时期开始时指示上行多用户发送上行数据，或者在多帧传输进行中首次调度某个或某些用户进行上行多用户数据传输，或者指示用户进行上行重传的实现方案。

Description

一种实现并行多用户数据传输的方法及主节点 技术领域
本文涉及无线局域网技术领域。
背景技术
目前，随着更多的人使用无线局域网络(WLAN，Wireless Local Area Networks)进行数据通信，WLAN网络负载已在不断加重，且随着WLAN用户数目的增多，使用WLAN网络进行数据通信的效率也将会出现明显下降的趋势，这种情况下，单纯靠提高WLAN网络的速率已不能阻止使用WLAN网络进行数据通信的效率下降的问题。
因此，IEEE标准组织成立了相关的任务小组致力于解决WLAN网络效率问题。其中，并行多用户数据传输作为解决网络效率的一种备选技术，引起了广泛关注和研究。目前，HEW小组研究的并行多用户数据传输技术包括空域多址的多用户多输入多输出(MU-MIMO，Multi-User MIMO)技术，频域多址的正交频分多址(OFDMA，Orthogonal Frequency Division Multiple Access)技术，以及码分域多址的交织多址(IDMA，Interleave-Division Multiple-Access)技术。
图1为WLAN网络中一个基本服务集的组成示意图，如图1所示，在WLAN网络中，一个接入点站点(AP，Access Point)以及与该AP相关联的多个非接入点站点(non-AP STA，non-AP Station)组成了一个基本服务集(BSS，Basic Service Set)。一般，WLAN网络中所说的并行多用户数据传输为多个次节点同时向主节点发送数据，也称为上行多用户数据传输；或者，主节点同时给多个次节点发送数据，也称为下行多用户数据传输。其中，主节点一般就是指的AP或具有特殊能力的non-AP STA，次节点一般就是指的non-AP STA。
从上述分析可见，WLAN网络使用的上行多用户数据传输为并行多用户数据传输，可以有效地提高WLAN网络的效率。但是，目前相关技术中还 没有提供实现并行多用户数据传输的具体技术方案，还存在很多需要解决的问题，比如：AP如何对多个上行用户的调度和对数据应答并完成多帧传输、当上行多用户数据接收错误时，怎样进行错误恢复即重传、如何使用较少的开销灵活调度用户，以实现资源利用的最大化等。
综上所述，相关技术不能保证并行多用户数据传输在WLAN网络中的实现。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供一种实现并行多用户数据传输的方法及主节点，能够保证并行多用户数据传输在WLAN网络中的实现。
本发明实施例提供了一种实现并行多用户数据传输的方法，包括：主节点获取传输机会TXOP或服务期SP；
主节点使用携带有上行多个用户控制信息的控制/管理帧，在传输机会或服务期内指示次节点进行上行多用户数据发送。
该方法还包括：
所述主节点接收上行并行多用户数据，使用携带有多个用户数据确认/寻呼信息的控制/管理帧对接收到的上行并行多用户数据进行确认；
并使用携带有上行多个用户控制信息的控制/管理帧，在多帧传输进行中首次调度一个或多用户进行上行多用户数据传输。
该方法还包括：所述主节点使用携带有上行多个用户控制信息的控制/管理帧指示用户进行上行重传。
所述并行多用户数据传输在一个传输机会TXOP或服务期SP中；
该方法还包括：所述并行多用户数据传输中的多用户多帧交换占用的时间在预先设置的时间阈值内，其中时间阈值为所述TXOP或服务期的时间长度的限制值。
所述TXOP或服务期的时间阈值为固定的时间长度；或者，
所述TXOP或服务期的时间阈值由上行多用户的数据属性、或站点属性、或服务质量QoS需求确定。
所述控制/管理帧至少包括帧头和帧体；其中，
帧头包括：发送地址域、接收地址域，以及帧控制域，所述发送地址域用于指示发送反馈帧的设备的地址信息，所述接收地址域用于指示接收反馈帧的目的信息，以及所述帧控制域用于指示其所在的帧为携带有多个用户数据确认/寻呼信息的反馈帧；
帧体包括：确认/寻呼控制域，以及M个空确认/寻呼信息域和N个确认/寻呼信息域，其中，每个确认/寻呼信息域或空确认/寻呼信息域对应上行多用户数据传输中的一个用户，表达式“M+N”表示总的用户个数；
其中，空确认/寻呼信息域，用于在传输时期开始时指示上行多用户发送上行数据，或者在多帧传输进行中首次调度某个或某些用户进行上行多用户数据传输，或者指示用户进行上行重传。
可选地，所述确认/寻呼控制域包括：帧格式控制字段，以及用户个数字段，其中，所述帧格式控制字段用于指示所述控制/管理帧用于上行多用户数据的确认/寻呼；以及，所述用户个数字段用于指示所述确认/寻呼信息域及所述空确认/寻呼信息域的个数。
可选地，所述确认/寻呼控制域包括：帧格式控制字段、用户个数字段，以及寻呼指示字段，其中，所述帧格式控制字段用于指示所述控制/管理帧用于上行多用户数据的确认/寻呼；所述用户个数字段用于指示后续有多少个确认/寻呼信息域和多少个空确认/寻呼信息域的用户个数字段，所述用户个数字段的值为上行多用户数据传输中的用户的个数“M+N”；以及，所述寻呼指示字段用于指示对应的用户是否还能在接下来的上行多用户无线帧中发送上行数据。
指示上行多用户数据传输中的用户的个数“M+N”包括：
通过所述确认/寻呼控制域中的字段分别指示M和N的值、或者“M+N”的值、或者M、或N的值；
或者，通过所述确认/寻呼控制域中的字段指示(M+N)的值，所述每个空确认/寻呼信息域或确认/寻呼信息域通过比特指示自身使用的格式。
所述M个空确认/寻呼信息域和N个确认/寻呼信息域在所述控制/管理帧中的排列为：
所述N个确认/寻呼信息域设置在前面，所述M个空确认/寻呼信息域设置在所述N个确认/寻呼信息域之后；
或者，所述M个空确认/寻呼信息域设置在前面，所述N个确认/寻呼信息域设置在所述M个空确认/寻呼信息域之后。
所述确认/寻呼信息域包括：用户标识字段，以及寻呼指示字段；其中，
用户标识字段，用于表示所述确认/寻呼信息域对应的用户；
寻呼指示字段，用于指示该用户是否还能在接下来的上行多用户无线帧中发送上行数据。
所述确认/寻呼信息域包括：用户标识字段、以及资源指示字段；其中，
用户标识字段，用于表示所述确认/寻呼信息域对应的用户；
资源指示字段，用于指示下次上行多用户数据传输中，允许进行上行数据传输的所述用户使用的资源范围。
所述确认/寻呼信息域还包括：确认信息位图、数据流标识字段、确认信息序列控制信息；其中，
确认信息位图，为一个比特图，每个比特对应数据流中一个数据单元的对错指示；
数据流标识字段，用于表示确认信息位图中的对错指示所对应的数据单元所在的数据流的标识；
确认信息序列控制信息，用于表示确认信息位图中的对错指示所对应的数据单元的序号范围。
所述空确认/寻呼信息域包括：用户标识字段和资源字段，所述用户标 识字段用于指示用户的标识；所述资源字段用于表示被指示的用户发送上行数据或上行重传所使用的资源。
可选地，所述空确认/寻呼信息域不包括确认信息位图。
可选地，所述空确认/寻呼信息域不包括确认信息位图，以及确认信息序列控制信息。
所述空确认/寻呼信息域还包括指示上行发送要调制的上行发送参数信息；
所述上行发送参数包括：发送功率控制、和/或频率偏移预校正、和/或时延参数、和/或上行发送的频域/空域资源范围参数。
所述帧头还包括时间长度域，用于确定被指示为还能发送上行数据的用户，在下一次上行多用户数据传输中的上行多用户无线帧的长度。
本发明还提供了一种主节点，至少包括获取模块，及控制模块；其中，
所述获取模块，设置为获取传输机会或服务期；
所述控制模块，设置为使用携带有上行多个用户控制信息的控制/管理帧，在传输机会或服务期内指示次节点进行上行多用户数据发送。
所述获取模块还设置为，接收上行并行多用户数据；
所述控制模块还设置为：使用携带有多个用户数据确认/寻呼信息的控制/管理帧对接收到的上行并行多用户数据进行确认；并使用携带有上行多个用户控制信息的控制/管理帧，在多帧传输进行中首次调度一个或多个用户进行上行多用户数据传输。
所述控制模块还设置为：所述主节点使用携带有上行多个用户控制信息的控制/管理帧指示用户进行上行重传。
所述控制/管理帧包括帧头和帧体；其中，
帧头包括：发送地址域、接收地址域，以及帧控制域，其中所述发送地址域用于指示发送反馈帧的设备的地址信息，所述接收地址域用于指示接收反馈帧的目的信息，以及帧控制域用于指示其所在的帧为携带有多个用户数据确认/寻呼信息的反馈帧；
帧体包括：确认/寻呼控制域，以及M个空确认/寻呼信息域和N个确认/寻呼信息域，其中，每个确认/寻呼信息域或空确认/寻呼信息域对应上行多用户数据传输中的一个用户，表达式“M+N”表示总的用户个数；
其中，空确认/寻呼信息域，用于在传输时期开始时指示上行多用户发送上行数据，或者在多帧传输进行中首次调度某个或某些用户进行上行多用户数据传输，或者指示用户进行上行重传。
可选地，所述确认/寻呼控制域包括：帧格式控制字段，以及用户个数字段，其中，所述帧格式控制字段用于指示所述控制/管理帧用于上行多用户数据的确认/寻呼；以及，所述用户个数字段用于指示所述确认/寻呼信息域及所述空确认/寻呼信息域的个数。
可选地，所述确认/寻呼控制域包括：帧格式控制字段、用户个数字段，以及寻呼指示字段，其中所述帧格式控制字段用于指示所述控制/管理帧用于上行多用户数据的确认/寻呼；所述用户个数字段用于指示后续有多少个确认/寻呼信息域和多少个空确认/寻呼信息域，所述用户个数字段的值为上行多用户数据传输中的用户的个数“M+N”；以及，所述寻呼指示字段用于指示每个用户是否还能在接下来的上行多用户无线帧中发送上行数据的寻呼指示字段。
所述指示上行多用户数据传输中的用户的个数“M+N”包括：
通过所述确认/寻呼控制域中的字段分别指示M和N的值、或者“M+N”的值、或者M或N的值；
或者，通过所述确认/寻呼控制域中的字段指示(M+N)的值，所述每个空确认/寻呼信息域或确认/寻呼信息域通过比特指示自身使用的格式。
所述M个空确认/寻呼信息域和N个确认/寻呼信息域在所述控制/管理帧中的排列为：
所述N个确认/寻呼信息域设置在前面，所述M个空确认/寻呼信息域设置在所述N个确认/寻呼信息域之后；
或者，所述M个空确认/寻呼信息域设置在前面，所述N个确认/寻呼信息域设置在所述M个空确认/寻呼信息域之后。
可选地，所述确认/寻呼信息域包括：用户标识字段、资源指示字段，以及寻呼指示字段；其中，
用户标识字段，用于表示所述确认/寻呼信息域对应的用户；
资源指示字段，用于指示下次上行多用户数据传输中，允许进行上行数据传输的所述用户使用的资源范围；
寻呼指示字段，用于指示所述用户是否还能在接下来的上行多用户无线帧中发送上行数据。
可选地，所述确认/寻呼信息域包括：用户标识字段、以及资源指示字段；其中，
用户标识字段，用于表示所述确认/寻呼信息域对应的用户；
资源指示字段，用于指示下次上行多用户数据传输中，允许进行上行数据传输的所述用户使用的资源范围。
所述确认/寻呼信息域还包括：确认信息位图、数据流标识字段，以及确认信息序列控制信息；其中，
确认信息位图，为一个比特图，每个比特对应数据流中一个数据单元的对错指示；
数据流标识字段，用于表示确认信息位图中的对错指示所对应的数据单元所在的数据流的标识；以及
确认信息序列控制信息，用于表示确认信息位图中的对错指示所对应的数据单元的序号范围。
所述空确认/寻呼信息域包括：用户标识字段和资源字段，其中所述用户表示字段用于指示用户的标识；所述资源字段用于表示被指示的用户发送上行数据或上行重传所使用的资源。
可选地，所述空确认/寻呼信息域不包括确认信息位图。
可选地，所述空确认/寻呼信息域不包括确认信息位图，以及确认信息序列控制信息。
所述空确认/寻呼信息域还包括指示上行发送要调制的上行发送参数信 息；
所述上行发送参数包括：发送功率控制、和/或频率偏移预校正、和/或时延调整。
所述帧头还包括时间长度域，用于确定被指示为还能发送上行数据的用户，在下一次上行多用户数据传输中的上行多用户无线帧的长度。
本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行上述方法。
与相关技术相比，本申请技术方案包括主节点获取传输机会或服务期；主节点使用携带有上行多个用户控制信息的控制/管理帧，在传输机会或服务期内指示次节点进行上行多用户数据发送。通过本发明实施例的方法，实现了AP对多个上行用户的数据的应答，保证了并行多用户数据传输在WLAN网络中的实现。而且，由于本发明实施例的控制/管理帧中设置有空确认/寻呼信息域，提供了在传输时期开始时指示上行多用户发送上行数据，或者在多帧传输进行中首次调度某个或某些用户进行上行多用户数据传输，或者指示用户进行上行重传的实现方案。
本发明的特征和优点将在随后的说明书中阐述，或者通过实施本发明而了解。本发明的其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
此处所说明的附图用来提供对本发明实施例的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1为WLAN网络中一个基本服务集的组成示意图；
图2为本发明实施例中实现并行多用户数据传输的方法的流程图；
图3为本发明实施例中携带有多个用户数据确认/寻呼信息的无线帧的组成示意图；
图4为本发明实施例的帧体中的确认/寻呼控制域和确认/寻呼信息域的组成示意；
图5为本发明实施例的帧体中空确认/寻呼信息域的组成示意；
图6为本发明实施例的主节点的组成结构示意图；
图7为本发明实施例中实现并行多用户数据传输的第一实施例的示意图；
图8为本发明实施例中实现并行多用户数据传输的第二实施例的示意图；
图9为本发明实施例中实现并行多用户数据传输的第三实施例的示意图。
本发明的实施方式
下文中将结合附图对本发明的实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
还需要说明的是，本文出现的符号“/”用于表示“或”的意思。
图2为本发明实施例中实现并行多用户数据传输的方法的流程图，如图2所示，包括以下步骤：
步骤200：主节点获取传输机会TXOP或服务期。
本步骤的具体实现属于本领域的惯用技术手段，并不用于限定本发明的保护范围，这里不再赘述。
需要说明的是，TXOP或服务期(SP,Service Period)的时间长度是有限制即时间阈值的，多用户多帧交换占用的时间不能超过该时间阈值。其中，TXOP或服务期的时间阈值可以为固定的时间长度，也可以由上行多用户的数据属性、或站点属性、或服务质量(QoS)需求确定。需要说明的是，在现有协议中，一个TXOP发送一种QoS的数据，QoS等级的高低和业务传输属性确定了能够连续发送的时间长度，但是上行多用户涉及多个站点的数据，不同的站点可能存在多种QoS要求。此时的时间阈值要根据多个用户的需求联合考虑，举个例子：可以根据多用户数据中最高优先级的数据确定 QoS；或者，可以根据特定站点STA，例如STA1的数据QoS确定该时间阈值等。具体实现方案很多，这里强调的是根据多个用户的需求联合考虑，只要是本领域技术人员认为是合理的都可以，并不用于限定本发明的保护范围。
步骤201：主节点使用携带有上行多个用户控制信息的控制/管理帧，在传输机会或服务期内指示次节点进行上行多用户数据发送。
本发明实施例的方法还包括：
主节点接收上行并行多用户数据，使用携带有多个用户数据确认/寻呼信息的控制/管理帧对接收到的上行并行多用户数据进行确认；
并使用携带有上行多个用户控制信息的控制/管理帧，在多帧传输进行中首次调度一个或多个用户进行上行多用户数据传输。
本发明实施例的方法还包括：主节点使用携带有上行多个用户控制信息的控制/管理帧指示用户进行上行重传。
本步骤中的控制/管理帧的具体组成如图3所示，至少包括帧头和帧体；其中，
帧头，包括发送地址域、接收地址域、帧控制域，以及时间长度(Duration)域，其中，
发送地址域，用于指示发送控制/管理帧的设备的地址信息；
接收地址域，用于指示接收控制/管理帧的目的信息，可选地，对于控制/管理帧，接收地址域的目的信息可以设置为广播或多播组地址，当接收地址域设置为多播组地址时，目的信息为上行多用户数据传输的多个用户；这里，可以预先通过管理帧交互，将多个站点(对应多个用户)和一个特定组播地址进行绑定，在反馈帧中就可以将接收地址设为该组播地址，地址一般是指MAC地址。
帧控制域，用于指示其所在的帧为携带有上行多个用户控制信息的控制/管理帧，帧控制域包含有帧类型/子帧类型等参数。或者与帧体的确认/寻呼控制域中的帧格式控制字段，一同来指示其所在的帧为携带有上行多个用户控制信息的控制/管理帧。
时间长度(Duration)域，用于确定下次上行多用户数据传输中，多用户数据的无线帧的长度。
如图3所示，
帧体，包括确认/寻呼控制域，以及，M个空确认/寻呼信息域和N个确认/寻呼信息域。每个空确认/寻呼信息域或确认/寻呼信息域对应一个用户，(M+N)为帧体所在的控制/管理帧指示的总的用户个数，M和N均可以为0，或者为正整数；空确认/寻呼信息域的长度可以与确认/寻呼信息域的长度相等。
图4为本发明实施例中帧体中的确认/寻呼控制域和确认/寻呼信息域的组成示意图，如图4所示，
确认/寻呼控制域包括：帧格式控制字段，以及用户个数字段，其中，帧格式控制字段用于指示控制/管理帧用于上行多用户数据的确认/寻呼；以及，用户个数字段用于指示确认/寻呼信息域及空确认/寻呼信息域的个数，用户个数字段的值为上行多用户数据传输中的用户的个数(M+N)，M、N可以为0，也可以是正整数；
或者，
确认/寻呼控制域包括：帧格式控制字段，以及用户个数字段，以及寻呼指示字段；
其中，帧格式控制字段用于指示控制/管理帧用于上行多用户数据的确认/寻呼；用户个数字段用于指示后续有多少个确认/寻呼信息域和多少个空确认/寻呼信息域，用户个数字段的值为上行多用户数据传输中的用户的个数(M+N)，M、N可以为0，也可以是正整数；以及，寻呼指示字段用于指示每个用户是否还能在接下来的上行多用户无线帧中发送上行数据，可选地，寻呼指示字段为真，表示该用户在接下来的上行多用户无线帧中可以发送上行数据；寻呼指示字段为假时，表示对应的用户在接下来的上行多用户无线帧中不能发送上行数据。
其中，指示上行多用户数据传输中的用户的个数(M+N)包括：通过确认/寻呼控制域中的字段分别指示M和N的值、或者(M+N)的值、或者M或N 的值；比如，可以使用字段分别指示M和N，或者指示(M+N)和(M或N)之一等常用的指示方法等。
或者，通过确认/寻呼控制域中的字段指示(M+N)的值，每个空确认/寻呼信息域或确认/寻呼信息域通过比特指示自身使用的格式。需要说明的是，当使用这种指示方法时，由于每个信息域都有自身格式的指示，所以空确认/寻呼信息域和确认/寻呼信息域可以任意排列，且只需要指示总数(M+N)即可。
可选地，M个空确认/寻呼信息域和N个确认/寻呼信息域在所述控制/管理帧中的排列为：N个确认/寻呼信息域设置在前面，M个空确认/寻呼信息域设置在所述N个确认/寻呼信息域之后；或者，M个空确认/寻呼信息域设置在前面，N个确认/寻呼信息域设置在所述M个空确认/寻呼信息域之后。
如图4所示，
确认/寻呼信息域包括：用户标识字段、资源指示字段，以及寻呼指示字段；其中，
用户标识字段，用于表示确认/寻呼信息域对应的用户，可以是发送上行数据的用户如次节点的关联标识(AID，Association Identify)等；
资源指示字段，用于指示下次上行多用户数据传输中，允许进行上行数据传输的用户使用的资源范围，其中资源可以为频域，时域，码分域，空分域等资源；
寻呼指示字段，用于指示与所述确认/寻呼信息域对应的用户是否还能在接下来的上行多用户无线帧中发送上行数据，可选地，寻呼指示字段为真，表示该用户在接下来的上行多用户无线帧中可以发送上行数据；寻呼指示字段为假时，表示该用户在接下来的上行多用户无线帧中不能发送上行数据。需要说明的是，如果在确认/寻呼控制域中包括有寻呼指示字段，那么在确认/寻呼信息域中可以省略寻呼指示字段。
可选地，确认/寻呼信息域还包括确认信息位图、数据流标识字段、确认信息序列控制信息；其中，
确认信息位图，为一个比特图，每个比特对应数据流中一个数据单元的对错指示；
数据流标识字段，用于表示确认信息位图中的对错指示所对应的数据单元所在的数据流的标识；
确认信息序列控制信息，用于表示确认信息位图中的对错指示所对应的数据单元的序号范围。
图5为本发明实施例的帧体中的空确认/寻呼信息域的组成示意，如图5所示，
空确认/寻呼信息域，用于在传输时期开始时指示上行多用户发送上行数据，或者在多帧传输进行中首次调度一个或多个用户进行上行多用户数据传输，或者指示用户进行上行重传。
空确认/寻呼信息域包括：用户标识字段和资源字段，所述用户标识字段用于指示用户的标识，可以是站点的AID等；所述资源字段用于表示被指示的用户发送上行数据或上行重传所使用的资源；
可选地，所述空确认/寻呼信息域不包括确认信息位图。
空确认/寻呼信息域，还包括数据流标识及确认信息序列控制信息，使用这些字段的特定值或保留位指示当前域为空确认/寻呼信息域的格式，即该空确认/寻呼信息域不包含对数据正确接收与否的确认，比如对于确认/寻呼格式，确认信息序列控制信息中的某些比特位(分段指示)固定设置为0，对于空确认格式，可以将该比特位设置为非0值，以区别两种信息域格式；再如：或者，每个信息域通过一些比特指示自身使用的格式即可。并且，在空确认/寻呼信息域中，如果采用与确认/寻呼信息域一致的格式时，其中的确认信息位图为空确认，即设置为全0；默认寻呼指示为真或将寻呼指示固定设置为真。
可选地，
空确认/寻呼信息域还包括接入点AP指示STA上行发送要调制的上行发送参数信息，其中，上行发送参数可以包括时延参数、和/或频率偏移调制参数、和/或发送功率参数等。
可选地，本步骤中的反馈帧还包括帧校验，用于确定帧是否被正确接收进行校验。也就是CRC校验，CRC校验如何实现并不用于限定本发明的保护范围，这里不再赘述。
可选地，所述空确认/寻呼信息域不包括确认信息位图，以及确认信息序列控制信息。
需要说明的是，图3～图5所示的控制/管理帧的组成示意图中，对各个信息域的顺序并不做限定，本领域技术人员容易知道可以重新组合，其具体顺序关系并不用于限定本发明的保护范围，这里不再赘述。
通过本发明实施例的方法，实现了AP对多个上行用户的数据的应答，保证了并行多用户数据传输在WLAN网络中的实现。而且，由于本发明控制/管理帧中设置有空确认/寻呼信息域，提供了在传输时期开始时指示上行多用户发送上行数据，或者在多帧传输进行中首次调度一个或多个用户进行上行多用户数据传输，或者指示用户进行上行重传的具体实现方案。
图6为本发明实施例的主节点的组成结构示意图，如图6所示，至少包括获取模块，以及控制模块；其中，
获取模块，设置为获取传输机会或服务期；
控制模块，设置为使用携带有上行多个用户控制信息的控制/管理帧，在传输机会或服务期内指示次节点进行上行多用户数据发送。
下面对本发明实施例的方法进行详细描述。
按照协议规定，在一个AP建立一个BSS时，多个non-AP STA与AP之间会进行关联认证过程，从而组成一个BSS。在上述关联认证过程中，AP可与每个non-AP STA之间会交互能力信息，在能力信息中包括有是否支持上行多用户传输能力的指示。
图7为本发明实施例中实现并行多用户数据传输的第一实施例的示意图，如图7所示，第一实施例中，假设关联站点STA1～STA4支持上行多用户数据传输，且STA1～STA4分别与AP达成了支持使用携带有上行多个用户控制信息的控制/管理帧的协议或协商。
首先，假设AP竞争发送上行多用户控制信息的控制/管理帧，为一个特 殊块确认帧即特殊BA帧。并且，AP获得了一个TXOP。在特殊BA帧中携带有STA1、STA2、STA3和STA4的上行多用户控制信息，格式都确定为空确认/寻呼域的格式。
在第一实施例中，假设空确认/寻呼域的用户标识字段中指示有STA1的标识、并指示或默认允许STA1进行上行多用户发送即寻呼指示默认为真，也就是说STA1可以上行并行发送上行多用户无线帧1，另外，空确认/寻呼域的参数信息字段和资源字段中还分别指示了STA1上行多用户数据发送的发送参数和资源。对STA2～STA4的处理过程类似，其中，假设STA4对应的空确认/寻呼域的参数信息字段和资源字段中没有指示上行多用户数据发送的发送参数和资源。这里，发送参数可以包括时延参数，频率偏移调制参数、功率参数等；资源可以为频域，时域，码分域，空分域等资源。
在第一实施例中的特殊BA帧中，假设帧头中包含有Duration域，用于确定上行并行发送的上行多用户无线帧1的发送时间，及用于避免STA1～STA3以外的站点接入信道的预约信道时间。可选地，Duration值可以为：常数2与短帧间间隔(SIFS)之积的积值、期望的多用户无线帧2的发送时间，以及无线帧2的反馈帧的发送时间之和的值。其中，期望的多用户无线帧2的发送时间是由AP自身确定的，是一个有多用户(multi-user)计算的一个值。无线帧2的反馈帧的发送时间可以是协议预先设置的一个时间(反馈帧时间相对固定)，或者，为根据预设规则确定的一个时间，比如可以将下一个反馈帧的时间定义为当前反馈帧的发送时间等。也就是说，在站点收到Duration域后，用Duration域的值减去帧间间隔，减去预先设置的反馈帧时间，就可以得到上行发送无线帧2的时间限制。
接着，STA1～STA4收到来自AP特殊BA帧后，确定包含自身的空确认/寻呼信息允许上行传输，则在短帧间间隔(SIFS，Short Interframe Space)后同时进行并行上行传输多用户无线帧1，传输时间根据本实施例中的特殊BA帧中的Duration域的值来确定。同时，STA1～STA3根据发送参数信息字段和资源字段的指示，发送上行多用户无线帧1。本实施例中，STA4没有收到发送参数信息字段、资源字段的指示，因此，STA4可以使用最近一次进行上行多用户发送的参数和资源，或者使用预先设置的进行无线帧1的发送。而 对于其他旁听站点，在收到本实施例的特殊BA帧后，根据特殊BA帧中的Duration域的值设置一个计时器(NAV，Netework Allocation Vector)，该计时器的值不到0时，旁听站点不能竞争信道。
然后，AP接收上行多用户无线帧1，并向各STA返回反馈帧，其帧类型或格式为块确认(BA)帧，在BA帧中包含对STA1～STA4的确认/寻呼域信息，即对应STA1～STA4中每个站点都发送的无线帧1中的数据的块确认信息，以及对STA1～STA4的寻呼指示信息，假设STA1～STA4的寻呼指示信息设置都为假，那么，本次TXOP结束。
图8为本发明实现并行多用户数据传输的第二实施例的示意图，如图8所示，假设，在一个TXOP或服务期中，STA1、STA2和STA3上行并行发送上行多用户无线帧。
首先，AP接收来自STA1～STA3的多用户无线帧1，并发送反馈帧1，在第二实施例中，假设STA3的数据接收全部错误。本实施例中的反馈帧1的帧类型或格式设置为上行多用户控制信息的控制/管理帧即特殊BA1帧，可选地，通过将特殊BA1帧中的帧控制域中的帧类型/子帧类型设置为块确认帧，在确认/寻呼域的控制字段将帧格式控制设置为用于上行多用户控制信息的控制/管理帧的帧格式来实现，或者，只使用帧类型/子帧类型将该帧设置为多用户控制信息的控制/管理帧来实现。在本实施例的控制/管理帧中，有对应STA1～STA2的确认/寻呼，在确认/寻呼信息域中，确认信息表示已经正确收到来自STA1～STA2的无线帧1中部分或全部的数据单元，并将寻呼指示设为真，允许STA1～STA2继续进行上行多用户数据传输；之外，对应STA3的空确认/寻呼域，指示来自STA3的无线帧1中的全部数据单元错误，但是允许STA3错误恢复即指示STA3可以重传上行数据。
接着，STA1～STA3发送多用户无线帧2，其中STA3重传无线帧1中的错误数据。
AP接收来自STA1～STA3的多用户无线帧2，并发送反馈帧2。这里，反馈帧2其帧类型或格式设置为上行多用户控制信息的控制/管理帧即特殊BA2帧，可选地，在特殊BA2帧中包含有对STA1～STA3的确认/寻呼，在确认/寻呼信息域中，确认信息表示已经正确收到来自STA1～STA3的无线帧2 中的部分或全部的数据单元，并将STA1～STA2的寻呼指示设置为真，允许STA1～STA2继续上行数据传输，本实施例中，假设将STA3的寻呼指示设置为假，终止STA3的上行数据传输；之外，假设在本实施例的特殊BA2帧中，还包含有对STA4的空确认/寻呼信息域，用于在TXOP或服务期内首次调度STA4进行上行多用户数据传输，在空确认/寻呼信息域中，通过用户标识字段指示了STA4的标识，并携带了发送参数信息和资源信息。
然后，STA1、STA2、STA4发送上行多用户无线帧3，其中，STA4根据特殊BA2帧中的发送参数信息和资源信息发送数据。
需要说明的是，所述的TXOP或服务期的时间长度是有限制的即时间阈值，多用户多帧交换占用的时间不能超过该时间阈值，也就是说，当STA1～STA4发送完多用户无线帧N时，虽然更多数据指示为1，AP为了防止传输时间超过TXOP或服务期的时间阈值，在反馈给STA1～STA4的多用户数据确认/寻呼的反馈帧中，将所有站点的寻呼指示设为假，并将Duration值设置为0，用于结束多用户多帧传输。其中，TXOP或服务期的时间阈值可以为固定的时间长度，也可以由上行多用户的数据属性、或站点属性、或QoS需求确定。
当寻呼的数据有部分错误时，SIFS后发送本发明的控制/管理帧帧，以确认正确的用户数据并指示错误用户重传。当寻呼的数据全部错误时即未收到期望的数据信号或收到了信号但全部错误时，则使用PIFS或竞争退避过程监听信道，如果在上述PIFS或竞争退避过程内信道空闲则发送本发明实施例的控制/管理帧，以指示所有错误用户进行重传。图9为本发明实施例中实现并行多用户数据传输的第三实施例的示意图，如图9所示，假设，在一个TXOP或服务期中，STA1、STA2、STA3和STA4上行并行发送上行多用户无线帧。
首先，AP接收来自STA1～STA4的多用户无线帧1，并反馈携带有上行多用户控制信息的控制/管理帧即特殊BA1帧，在特殊BA1帧中，有对应STA1～STA4的确认/寻呼信息域，用于对无线帧1的数据确认，并且，在第三实施例中，将对应STA4的寻呼指示设置为假，不允许STA4继续上行数据的发送，而将STA1～STA3的对应的寻呼指示均设置为真，即允许 STA1～STA3继续进行上行数据传输，并假设在资源指示字段中对STA3指示了新的资源，比如：资源信息中指示STA3可以使用STA4的资源加上原来自身的资源。
接着，STA1～STA3收到特殊BA1帧后SIFS，立即进行上行多用户无线帧2的发送，其中STA3使用新资源。
AP发送完特殊BA1帧，如果判断出没有收到任何寻呼的数据或判断收到的寻呼数据全部错误，则在上述判断后的点协调帧间间隔(PIFS，Point(coordination function)Interframe Space)或竞争退避时间内检测信道，如果信道闲，则发送BA2帧，触发STA1～STA3的错误恢复过程。
然后，STA1～STA3在收到特殊2BA帧后SIFS，立即进行上行多用户无线帧3的发送。
AP收到无线帧3后，发送特殊BA3帧，并利用特殊BA3帧结束TXOP或服务期。
本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行上述方法。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。
上述实施例中的各装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的各装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
以上所述，仅为本发明的可选实施例而已，并非用于限定本发明的保护范围。
工业实用性
本发明实施例提供的实现并行多用户数据传输的方法和主节点，实现了AP对多个上行用户的数据的应答，保证了并行多用户数据传输在WLAN网络中的实现。而且，由于本发明实施例的控制/管理帧中设置有空确认/寻呼信息域，提供了在传输时期开始时指示上行多用户发送上行数据，或者在多帧传输进行中首次调度某个或某些用户进行上行多用户数据传输，或者指示用户进行上行重传的实现方案。

Claims (33)

  1. 一种实现并行多用户数据传输的方法，包括：主节点获取传输机会TXOP或服务期SP；
    主节点使用携带有上行多个用户控制信息的控制/管理帧，在传输机会或服务期内指示次节点进行上行多用户数据发送。
  2. 根据权利要求1所述的方法，还包括：
    所述主节点接收上行并行多用户数据，使用携带有多个用户数据确认/寻呼信息的控制/管理帧对接收到的上行并行多用户数据进行确认；
    并使用携带有上行多个用户控制信息的控制/管理帧，在多帧传输进行中首次调度一个或多个用户进行上行多用户数据传输。
  3. 根据权利要求1所述的方法，还包括：所述主节点使用携带有上行多个用户控制信息的控制/管理帧指示用户进行上行重传。
  4. 根据权利要求2所述的方法，其中，所述并行多用户数据传输在一个传输机会TXOP或服务期SP中；
    该方法还包括：所述并行多用户数据传输中的多用户多帧交换占用的时间在预先设置的时间阈值内，其中时间阈值为所述TXOP或服务期的时间长度的限制值。
  5. 根据权利要求4所述的方法，其中，所述TXOP或服务期的时间阈值为固定的时间长度；或者，
    所述TXOP或服务期的时间阈值由上行多用户的数据属性、或站点属性、或服务质量QoS需求确定。
  6. 根据权利要求1、2或3所述的方法，其中，所述控制/管理帧至少包括帧头和帧体；其中，
    帧头包括：发送地址域、接收地址域，以及帧控制域，所述发送地址域用于指示发送反馈帧的设备的地址信息，所述接收地址域用于指示接收反馈帧的目的信息，以及所述帧控制域用于指示其所在的帧为携带有多个用户数据确认/寻呼信息的反馈帧；
    帧体包括：确认/寻呼控制域，以及M个空确认/寻呼信息域和N个确认/寻呼信息域，其中，每个确认/寻呼信息域或空确认/寻呼信息域对应上行多用户数据传输中的一个用户，表达式“M+N”表示总的用户个数；
    其中，空确认/寻呼信息域，用于在传输时期开始时指示上行多用户发送上行数据，或者在多帧传输进行中首次调度某个或某些用户进行上行多用户数据传输，或者指示用户进行上行重传。
  7. 根据权利要求6所述的方法，其中，
    所述确认/寻呼控制域包括：帧格式控制字段，以及用户个数字段，其中，所述帧格式控制字段用于指示所述控制/管理帧用于上行多用户数据的确认/寻呼；以及，所述用户个数字段用于指示所述确认/寻呼信息域及所述空确认/寻呼信息域的个数。
  8. 根据权利要求6所述的方法，其中，
    所述确认/寻呼控制域包括：帧格式控制字段、用户个数字段，以及寻呼指示字段，其中，所述帧格式控制字段用于指示所述控制/管理帧用于上行多用户数据的确认/寻呼；所述用户个数字段用于指示后续有多少个确认/寻呼信息域和多少个空确认/寻呼信息域，所述用户个数字段的值为上行多用户数据传输中的用户的个数“M+N”；以及，所述寻呼指示字段用于指示对应的用户是否还能在接下来的上行多用户无线帧中发送上行数据。
  9. 根据权利要求6或8所述的方法，其中，指示上行多用户数据传输中的用户的个数“M+N”包括：
    通过所述确认/寻呼控制域中的字段分别指示M和N的值、或者“M+N”的值、或者M、或N的值；
    或者，通过所述确认/寻呼控制域中的字段指示“M+N”的值，所述每个空确认/寻呼信息域或确认/寻呼信息域通过比特指示自身使用的格式。
  10. 根据权利要求6所述的方法，其中，所述M个空确认/寻呼信息域和N个确认/寻呼信息域在所述控制/管理帧中的排列为：
    所述N个确认/寻呼信息域设置在前面，所述M个空确认/寻呼信息域设置在所述N个确认/寻呼信息域之后；
    或者，所述M个空确认/寻呼信息域设置在前面，所述N个确认/寻呼信息域设置在所述M个空确认/寻呼信息域之后。
  11. 根据权利要求7所述的方法，其中，所述确认/寻呼信息域包括：用户标识字段，以及寻呼指示字段；其中，
    用户标识字段，用于表示所述确认/寻呼信息域对应的用户；
    寻呼指示字段，用于指示该用户是否还能在接下来的上行多用户无线帧中发送上行数据。
  12. 根据权利要求8所述的方法，其中，所述确认/寻呼信息域包括：用户标识字段以及资源指示字段；其中，
    用户标识字段，用于表示所述确认/寻呼信息域对应的用户；
    资源指示字段，用于指示下次上行多用户数据传输中，允许进行上行数据传输的所述用户使用的资源范围。
  13. 根据权利要求11或12所述的方法，其中，所述确认/寻呼信息域还包括：确认信息位图、数据流标识字段、确认信息序列控制信息；其中，
    确认信息位图，为一个比特图，每个比特对应数据流中一个数据单元的对错指示；
    数据流标识字段，用于表示确认信息位图中的对错指示所对应的数据单元所在的数据流的标识；
    确认信息序列控制信息，用于表示确认信息位图中的对错指示所对应的数据单元的序号范围。
  14. 根据权利要求6、7或8所述的方法，其中，所述空确认/寻呼信息域包括：用户标识字段和资源字段，所述用户标识字段用于指示用户的标识；所述资源字段用于表示被指示的用户发送上行数据或上行重传所使用的资源；且所述空确认/寻呼信息域不包括确认信息位图。
  15. 根据权利要求6、7或8所述的方法，其中，所述空确认/寻呼信息域不包括确认信息位图，以及确认信息序列控制信息。
  16. 根据权利要求14所述的方法，其中，所述空确认/寻呼信息域还包 括指示上行发送要调制的上行发送参数信息；
    所述上行发送参数包括：发送功率控制、和/或频率偏移预校正、和/或时延参数、和/或上行发送的频域/空域资源范围参数。
  17. 根据权利要求6所述的方法，其中，所述帧头还包括时间长度域，用于确定被指示为还能发送上行数据的用户在下一次上行多用户数据传输中的上行多用户无线帧的长度。
  18. 一种主节点，包括获取模块，及控制模块；其中，
    所述获取模块，设置为获取传输机会或服务期；
    所述控制模块，设置为使用携带有上行多个用户控制信息的控制/管理帧，在传输机会或服务期内指示次节点进行上行多用户数据发送。
  19. 根据权利要求18所述的主节点，其中，所述获取模块还设置为，接收上行并行多用户数据；
    所述控制模块还设置为：使用携带有多个用户数据确认/寻呼信息的控制/管理帧对接收到的上行并行多用户数据进行确认；并使用携带有上行多个用户控制信息的控制/管理帧，在多帧传输进行中首次调度一个或多个用户进行上行多用户数据传输。
  20. 根据权利要求18所述的主节点，其中，所述控制模块还设置为：所述主节点使用携带有上行多个用户控制信息的控制/管理帧指示用户进行上行重传。
  21. 根据权利要求18、19或20所述的主节点，其中，所述控制/管理帧包括帧头和帧体；其中，
    帧头包括：发送地址域、接收地址域，以及帧控制域，其中所述发送地址域用于指示发送反馈帧的设备的地址信息，所述接收地址域用于指示接收反馈帧的目的信息，以及帧控制域用于指示该帧控制域所在的帧为携带有多个用户数据确认/寻呼信息的反馈帧；
    帧体包括：确认/寻呼控制域，以及M个空确认/寻呼信息域和N个确认/寻呼信息域，其中，每个确认/寻呼信息域或空确认/寻呼信息域对应上行多用户数据传输中的一个用户，表达式“M+N”表示总的用户个数；
    其中，空确认/寻呼信息域，用于在传输时期开始时指示上行多用户发送上行数据，或者在多帧传输进行中首次调度一个或多个用户进行上行多用户数据传输，或者指示用户进行上行重传。
  22. 根据权利要求21所述的主节点，其中，
    所述确认/寻呼控制域包括：帧格式控制字段，以及用户个数字段，其中，所述帧格式控制字段用于指示所述控制/管理帧用于上行多用户数据的确认/寻呼；以及，所述用户个数字段用于指示所述确认/寻呼信息域及所述空确认/寻呼信息域的个数。
  23. 根据权利要求21所述的主节点，其中，
    所述确认/寻呼控制域包括：帧格式控制字段、用户个数字段，以及寻呼指示字段，其中所述帧格式控制字段用于指示所述控制/管理帧用于上行多用户数据的确认/寻呼；所述用户个数字段用于指示后续有多少个确认/寻呼信息域和多少个空确认/寻呼信息域，所述用户个数字段的值为上行多用户数据传输中的用户的个数“M+N”；以及，所述寻呼指示字段用于指示每个用户是否还能在接下来的上行多用户无线帧中发送上行数据的寻呼指示字段。
  24. 根据权利要求23所述的主节点，其中，指示上行多用户数据传输中的用户的个数“M+N”包括：
    通过所述确认/寻呼控制域中的字段分别指示M和N的值、或者“M+N”的值、或者M或N的值；
    或者，通过所述确认/寻呼控制域中的字段指示“M+N”的值，所述每个空确认/寻呼信息域或确认/寻呼信息域通过比特指示自身使用的格式。
  25. 根据权利要求23所述的主节点，其中，所述M个空确认/寻呼信息域和N个确认/寻呼信息域在所述控制/管理帧中的排列为：
    所述N个确认/寻呼信息域设置在前面，所述M个空确认/寻呼信息域设置在所述N个确认/寻呼信息域之后；
    或者，所述M个空确认/寻呼信息域设置在前面，所述N个确认/寻呼信息域设置在所述M个空确认/寻呼信息域之后。
  26. 根据权利要求22所述的主节点，其中，所述确认/寻呼信息域包括： 用户标识字段、资源指示字段，以及寻呼指示字段；其中，
    用户标识字段，用于表示所述确认/寻呼信息域对应的用户；
    资源指示字段，用于指示下次上行多用户数据传输中，允许进行上行数据传输的所述用户使用的资源范围；
    寻呼指示字段，用于指示所述用户是否还能在接下来的上行多用户无线帧中发送上行数据。
  27. 根据权利要求23所述的主节点，其中，所述确认/寻呼信息域包括：用户标识字段、以及资源指示字段；其中，
    用户标识字段，用于表示所述确认/寻呼信息域对应的用户；
    资源指示字段，用于指示下次上行多用户数据传输中，允许进行上行数据传输的所述用户使用的资源范围。
  28. 根据权利要求26或27所述的主节点，其中，所述确认/寻呼信息域还包括：确认信息位图、数据流标识字段，以及确认信息序列控制信息；其中，
    确认信息位图，为一个比特图，每个比特对应数据流中一个数据单元的对错指示；
    数据流标识字段，用于表示确认信息位图中的对错指示所对应的数据单元所在的数据流的标识；以及
    确认信息序列控制信息，用于表示确认信息位图中的对错指示所对应的数据单元的序号范围。
  29. 根据权利要求23、24或25所述的主节点，其中，所述空确认/寻呼信息域包括：用户标识字段和资源字段，其中所述用户表示字段用于指示用户的标识；所述资源字段用于表示被指示的用户发送上行数据或上行重传所使用的资源；且所述空确认/寻呼信息域不包括确认信息位图。
  30. 根据权利要求23、24或25所述的方法，其中，所述空确认/寻呼信息域不包括确认信息位图，以及确认信息序列控制信息。
  31. 根据权利要求29所述的主节点，其中，所述空确认/寻呼信息域还 包括指示上行发送要调制的上行发送参数信息；
    所述上行发送参数包括：发送功率控制、和/或频率偏移预校正、和/或时延调整。
  32. 根据权利要求21所述的主节点，其中，所述帧头还包括时间长度域，用于确定被指示为还能发送上行数据的用户，在下一次上行多用户数据传输中的上行多用户无线帧的长度。
  33. 一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行权利要求1至16中任一项所述的方法。
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