WO2012028030A1 - Procédé pour un retour d'accusé de réception à utilisateurs multiples, et station pour le retour d'un accusé de réception - Google Patents

Procédé pour un retour d'accusé de réception à utilisateurs multiples, et station pour le retour d'un accusé de réception Download PDF

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Publication number
WO2012028030A1
WO2012028030A1 PCT/CN2011/076722 CN2011076722W WO2012028030A1 WO 2012028030 A1 WO2012028030 A1 WO 2012028030A1 CN 2011076722 W CN2011076722 W CN 2011076722W WO 2012028030 A1 WO2012028030 A1 WO 2012028030A1
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WIPO (PCT)
Prior art keywords
sta
mimo
packet
ack
group
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PCT/CN2011/076722
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English (en)
Chinese (zh)
Inventor
田开波
姜静
李峰
吕开颖
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中兴通讯股份有限公司
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Publication of WO2012028030A1 publication Critical patent/WO2012028030A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H04W74/06—Scheduled access using polling

Definitions

  • the present invention relates to a technique for feeding back an acknowledgement message (ACK), and more particularly to a method for multi-user feedback confirmation message, and a site (STA, Station) for feeding back a confirmation message.
  • ACK acknowledgement message
  • STA Site
  • Wireless Local Area Networks is a network system that uses wireless communication technology to interconnect computer devices to form a network that can communicate with each other and share resources.
  • the essential feature of WLAN is that it no longer uses a communication cable to connect the computer to the network, but to connect wirelessly, which makes the construction of the network and the movement of the terminal more flexible.
  • IEEE802.i l is one of the mainstream technologies of wireless LAN. This protocol mainly specifies the physical layer (PHY) and media access control (MAC) layer specifications.
  • the technical problem to be solved by the present invention is to provide a method for multi-user feedback confirmation message, which overcomes the shortcomings of the prior art that the multiple users participating in the MU transmission reply to the acknowledgment message (ACK).
  • the present invention provides a method for multi-user feedback confirmation message, which is used for a site (STA) associated with an access point (AP) in a basic service set (BSS).
  • STA site
  • AP access point
  • BSS basic service set
  • the method includes:
  • the STA After receiving the MU-MIMO data frame, the STA indicates the information indicated by the packet number (Group ID) field and the site data flow information indication (N STS ) field in the physical frame header of the data frame, physics.
  • MAC media access control
  • the packet number indicated by the Group ID field in the MU-MIMO data frame is the same as the packet number of the MU-MIMO packet where the STA itself is located, and the corresponding position in the N STS domain is not zero, the physical frame.
  • the bearer carries the same MAC address as the STA's own MAC address, and the STA replies to the ACK;
  • the corresponding location is the same as the relative location of the STA itself in the MU-MIMO packet.
  • the STA that first responds to the ACK is the STA corresponding to the MAC address carried in the request transmission frame (RTS) of the MU-MIMO transmission; the MU-MIMO data frame carries the bearer The remaining STAs identified by the MAC address reply to the ACK in the order of relative positions in the MU-MIMO packet.
  • RTS request transmission frame
  • the order of the agreement includes a relative position sequence of STAs identified by the MAC address carried in the MU-MIMO data frame payload in the MU-MIMO packet.
  • the STA indicates that the packet number indicated by the Group ID field in the MU-MIMO data frame is different from the packet number of the MU-MIMO packet in which the STA itself is located, and the STA does not reply to the ACK.
  • the packet number indicated by the Group ID field in the MU-MIMO data frame is the same as the packet number of the MU-MIMO packet where the STA itself is located, and the corresponding location indication in the N STS domain is zero, and the STA does not reply.
  • the corresponding location is the same as the relative location of the STA itself in the MU-MIMO packet.
  • the group number and the number indicated by the Group ID field in the MU-MIMO data frame The MU-MIMO packet in which the STA is located has the same packet number, and the corresponding location indication in the N STS domain is not zero. If the MAC carried in the physical frame payload is different from the MAC address of the STA itself, the STA does not reply. ACK;
  • the corresponding location is the same as the relative location of the STA in the MU-MIMO packet.
  • the step of assigning a group number to each MU-MIMO packet includes:
  • Another technical problem to be solved by the present invention is to provide a site (STA) for feeding back a confirmation message, which overcomes the drawbacks of the prior art that the multiple users participating in the MU transmission reply to the acknowledgment message (ACK).
  • STA site
  • ACK acknowledgment message
  • the present invention provides a site (STA) for feeding back a confirmation message, which is applied to reply an acknowledgement message (ACK) to an access point (AP) in a basic service set (BSS), which is combined with another one.
  • STA site
  • ACK acknowledgement message
  • AP access point
  • BSS basic service set
  • the STA includes a receiving module and a feedback module, where:
  • the receiving module is configured to: receive a multi-user-multiple input multiple output (MU-MIMO) data frame; the feedback module is configured to: according to the physical frame header of the MU-MIMO data frame
  • MU-MIMO multi-user-multiple input multiple output
  • the group ID field and site data stream information included in the VHT-SIG-A indicate the information indicated by the (N STS ) field, the media access control (MAC ) address information in the physical frame payload, and the Group ID field.
  • MU-MIMO packet information under the indicated packet number, determining STAs replying to the ACK, and replying to the ACK in an agreed order;
  • the AP performs MU-MIMO grouping on the STAs associated with it, for each
  • the packet information is notified to the STA.
  • the feedback module is configured to reply the ACK in the order of the STAs in the MU-MIMO packet.
  • the feedback module is configured to: carry according to the MU-MIMO data frame load
  • the relative locations of the STAs identified by the MAC address in the MU-MIMO packet sequentially reply to the ACK message.
  • the present invention provides a method for multi-user feedback confirmation message for a basic service set
  • STA site associated with the access point (AP) in (BSS) replies with an acknowledgment message (ACK), which includes:
  • the AP performs a multi-user-multiple input multiple output (MU-MIMO) packet on the STA associated with it, assigns a packet number to each MU-MIMO packet, and separately constructs the packet information, and notifies the STA to the STA;
  • MU-MIMO multi-user-multiple input multiple output
  • the domain and site data flow information indicates information indicated by the (N STS ) field, media access control (MAC ) address information in the payload of the physical frame of the MU-MIMO data frame, and the packet number indicated by the Group ID field
  • the underlying MU-MIMO packet information determines the STAs that need to reply to the ACK and replies to the ACK in an agreed order.
  • the step of determining the STA that needs to reply to the ACK includes: the packet number indicated by the Group ID field is the same as the packet number of the MU-MIMO packet where the STA itself is located, and the corresponding location in the N STS domain is not zero.
  • the payload of the physical frame carries the same MAC address as the MAC address of the STA itself, and the STA needs to reply to the ACK;
  • the corresponding location is the same as the relative location of the STA itself in the MU-MIMO packet.
  • the order of the agreement includes: an order of the STAs in the MU-MIMO packet.
  • the order of the agreement includes: the STA that first responds to the ACK is the STA corresponding to the MAC address carried in the RTS; the remaining STAs identified by the MAC address carried in the MU-MIMO data frame payload are in accordance with the MU. - The relative position in the MIMO packet sequentially replies to the ACK.
  • the order of the agreement includes: a relative position sequence of STAs identified by the MAC address carried in the MU-MIMO data frame payload in the MU-MIMO packet.
  • the step of determining the STA that needs to reply to the ACK includes: the packet number indicated by the Group ID field is different from the packet number of the MU-MIMO packet in which the STA itself is located, and the STA does not need to reply to the ACK.
  • the step of determining the STA that needs to reply to the ACK includes: the packet number indicated by the Group ID field is the same as the packet number of the MU-MIMO packet where the STA itself is located, and the corresponding location indication in the N STS domain is zero, The STA does not need to reply to the ACK; The corresponding location is the same as the relative location of the STA itself in the MU-MIMO packet.
  • the step of determining the STA that needs to reply to the ACK includes: the packet number indicated by the Group ID field is the same as the packet number of the MU-MIMO packet where the STA itself is located, and the corresponding location indication in the N STS domain is not zero. If the MAC carried in the payload of the physical frame is different from the MAC address of the STA itself, the STA does not need to reply to the ACK.
  • the corresponding location is the same as the relative location of the STA in the MU-MIMO packet.
  • the step of assigning a group number to each MU-MIMO packet includes: different MU-MIMO packets have the same or different packet numbers.
  • the present invention provides a site (STA) for feeding back a confirmation message for replying an acknowledgment message (ACK) to two (or two) groups of access points (APs) in a basic service set (BSS).
  • STA site
  • BSS basic service set
  • the packet information is notified to the STA, where the STA includes a first receiving module, a second receiving module, and a feedback module, where:
  • the first receiving module is configured to: receive a request sending frame (RTS) sent by the AP, and group information, and learn, according to the grouping information, a packet number of the MU-MIMO packet where the STA itself is located, and the STA itself is in the MU-MIMO packet. Relative position information;
  • RTS request sending frame
  • the second receiving module is configured to: receive a multi-user-multiple input multiple output (MU-MIMO) data frame;
  • MU-MIMO multi-user-multiple input multiple output
  • the feedback module is configured to: according to the obtained packet number of the MU-MIMO packet in which the STA itself is located, and the relative location information of the STA itself in the MU-MIMO packet, the RTS, the physics of the MU-MIMO data frame
  • the MU-MIMO packet information under the packet number indicated by the Group ID field determines the STAs that need to reply to the ACK, and replies to the ACK in an agreed order.
  • the feedback module is further configured to: reply the ACK in the order of the STAs in the MU-MIMO packet.
  • the feedback module is further configured to: reply the ACK according to the relative position of the STAs identified by the MAC address carried in the MU-MIMO data frame payload in the MU-MIMO packet.
  • the feedback module is configured to determine, in the following manner, the STA that needs to reply to the ACK: the packet number indicated by the Group ID field is the same as the packet number of the MU-MIMO packet where the STA itself is located, and the corresponding in the N STS domain If the location of the physical frame is not the same as the MAC address of the STA itself, the feedback module confirms that the STA needs to reply to the ACK;
  • the corresponding location is the same as the relative location of the STA itself in the MU-MIMO packet.
  • FIG. 1 is a schematic flowchart of a method for multi-user feedback ACK according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic diagram of a composition of a STA for feedback ACK according to Embodiment 2 of the present invention.
  • Embodiment 1 Multi-user feedback ACK method
  • This embodiment is used for a station (STA, Station) associated with an access point (AP, Access Point) in a basic service set (BSS) to reply a confirmation message.
  • STA station
  • AP access point
  • BSS basic service set
  • the embodiment mainly includes the following steps:
  • Step S110 In a BSS, the AP performs all possible MU-MIMO packets on the STAs associated with the STA according to one factor or a combination of several factors, such as channel state information, data traffic, and data service type of each STA. Specify a group ID (Group ID) for each MU-MIM0 packet and construct packet information separately;
  • MU-MIMO packets may also have different packet numbers
  • Step S120 the AP notifies the STA of the group information by using signaling
  • the packet information may be carried in a management frame and sent to the STA.
  • Step SI 30 after receiving the packet information, the STA learns the packet number of the MU-MIMO packet in which it is located, and also obtains relative position information in the MU-MIMO packet.
  • Step S140 after receiving the MU-MIMO data frame, the STA indicates the group number (Group ID) field and the site data flow information indication (N STS ) field included in the physical frame header of the data frame according to the VHT-SIG-A.
  • group ID group number
  • N STS site data flow information indication
  • the STA also receives a request to send (RTS, Request To Send), where the RTS includes the MAC address information of both the sender and the receiver.
  • RTS is a control frame used to protect the transmission of MU-MIMO data frames.
  • the corresponding position indication of the N STS field is not zero.
  • the physical frame payload carries the same MAC address as the STA's own MAC address. After the data detection is completed, the STA needs to reply to the ACK. The corresponding location is the same as the STA itself's relative position in the MU-MIMO packet.
  • the STA that first responds to the ACK is the STA corresponding to the MAC address carried in the RTS of the MU-MIMO transmission, and the STA may be referred to as a primary site.
  • the STA does not need to further parse the data, and does not need to reply to the ACK.
  • the STA does not need to further analyze. Data, there is no need to reply to ACK; the above corresponding position is the same as the relative position of the STA itself in the MU-MIMO packet.
  • the corresponding location indication in the N STS domain is not zero, and the physical frame load is carried.
  • the MAC does not need to reply to the ACK when the MAC address of the STA is different from the STA's own MAC address; the corresponding location is the same as the relative position of the STA in the MU-MIMO packet.
  • Each MU-MIMO packet has a maximum of 4 STAs, and a MU-MIMO packet of less than 4 STAs is still considered to be composed of 4 STAs, and an insufficient portion can be considered to have a virtual STA.
  • the identifier is represented by the MAC address of each STA.
  • Each STA receives the MU-MIMO packet information and detects it, but only STA-1, STA-2,
  • STA-4 and STA-6 will use this MU-MIMO packet information as useful information because there is a STA identifier matching the one in the received information.
  • the four STAs have useful information from this MU-MIMO packet information in two ways:
  • the STA identified by the MAC address carried in the RTS frame has data transmission in the current MU-MIMO transmission, the STA needs to reply the ACK first, and the remaining STAs identified by the MAC address carried in the data frame payload are The relative position of the group in which the packet is located is replied in order.
  • STA-1, STA-2 and STA-6 have one data stream transmission, and STA-4 has no data transmission.
  • the MU-MIMO packet transmission is performed, wherein the MAC address in the MAC address field in the RTS frame payload sent by the AP is the MAC address of the STA-6,
  • the information obtained by STA-1 to resolve the N STS domain includes: 1) the number of data streams of the STA in the first location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the third location in the MU-MIMO packet is zero, that is, the data of the STA that does not include the third location in the MU-MIMO packet is transmitted this time;
  • the number of data streams of the STA at the fourth position in the MU-MIMO packet is 1.
  • STA-1 occupies the fourth position in the MU-MIMO packet.
  • the MAC address in the RTS frame payload is the MAC address of STA-6, and the data of STA-6 is transmitted this time;
  • the number of data streams of the STA in the third location in the MU-MIMO packet is zero, that is, the data of the STA that does not include the third location in the MU-MIMO packet is transmitted this time;
  • the number of data streams of the STA at the fourth position in the MU-MIMO packet is 1.
  • STA-2 occupies the first position in the MU-MIMO packet; according to the received RTS frame, it can be known that the MAC address in the RTS frame payload is the STA-6 MAC address. Address, and this transmission has STA-6 data;
  • the STA-3 receives the MU-MIMO data frame, parses the Group ID field in the VHT-SIG-A, and knows that the frame does not belong to the MU-MIMO packet itself, and does not need to reply to the ACK.
  • STAs that have the same processing as STA3 also have STA5.
  • the number of data streams of the STA in the third location in the MU-MIMO packet is zero, that is, the data of the STA that does not include the third location in the MU-MIMO packet is transmitted this time;
  • the number of data streams of the STA at the fourth position in the MU-MIMO packet is 1.
  • STA-4 occupies the third position in the MU-MIMO packet, so the current transmission does not have its own data, and there is no need to reply to the ACK.
  • the number of data streams of the STA in the third position in the MU-MIMO packet is zero, that is, the current transmission does not include the data of the STA in the third position in the MU-MIMO packet; 4) The number of data streams of the STA in the fourth position in the MU-MIMO packet is 1.
  • STA-6 occupies the second position in the MU-MIMO packet; according to the received RTS frame, it can be known that the MAC address in the RTS frame payload is its own MAC address;
  • STA-6 replies with ACK first according to the method of this practical application.
  • the first reply ACK STA is STA-6;
  • the second reply ACK STA is STA-2;
  • the STA of the third reply ACK is STA-1.
  • Each MU-MIMO packet has a maximum of 4 STAs, and a MU-MIMO packet of less than 4 STAs is still considered to be composed of 4 STAs, and an insufficient portion can be considered to have a virtual STA.
  • the AP divides the six STAs into multiple MU-MIMO packets according to the channel state information of each STA, and notifies the corresponding STAs to the group information, assuming that the group number is sufficient, and each group number indicates only one MU-MIMO packet.
  • the identifier is represented by the MAC address of each STA.
  • Each STA receives the MU-MIMO packet information and detects it, but only STA-1, STA-2, STA-4, and STA-6 will use this MU-MIMO packet information as useful information because it is received.
  • the information has STA identifiers that match itself.
  • the useful information obtained by the four STAs from the MU-MIMO packet information has two aspects:
  • the STA identified by the MAC address carried in the RTS frame needs to reply to the ACK first. However, if the STA has no data transmission in the current MU-MIMO transmission, the STA does not need to reply to the ACK.
  • the STAs identified by the MAC address carried in the data frame payload reply ACK in the order of the relative positions of the packets.
  • the MU-MIMO data packet transmission is performed, wherein the MAC address in the MAC address field in the RTS frame payload sent by the AP is the MAC address of the STA-6, and is included in the physical frame header of the RTS frame.
  • Group number Group ID 2 information.
  • the information obtained by STA-1 to resolve the N STS domain includes:
  • the number of data streams of the STA in the first location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the second location in the MU-MIMO packet is zero, that is, the current transmission does not include the data of the STA in the second location in the MU-MIMO packet;
  • the number of data streams of the STA in the third position in the MU-MIMO packet is zero, that is, the current transmission does not include the data of the STA in the third position in the MU-MIMO packet; 4) The number of data streams of the STA in the fourth position in the MU-MIMO packet is 1; further analyzing the MAC address information in the frame payload, and discovering that its own MAC address is included, so the current transmission has its own data; According to the foregoing, STA-1 occupies the fourth position in the MU-MIMO packet. According to the received RTS frame, it can be known that the MAC address in the RTS frame payload is the MAC address of STA-6, and there is no STA in this transmission. -6 data,
  • the number of data streams of the STA in the second location in the MU-MIMO packet is zero, that is, the current transmission does not include the data of the STA in the second location in the MU-MIMO packet;
  • the number of data streams of the STA in the third location in the MU-MIMO packet is zero, that is, the data of the STA that does not include the third location in the MU-MIMO packet is transmitted this time;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • the STA-2 occupies the first position in the MU-MIMO packet.
  • the MAC address in the RTS frame payload is the MAC address of the STA-6, and there is no STA in the current transmission. -6 data;
  • STA-2 replies to the first ACK according to the method of this practical application.
  • the STA-3 receives the MU-MIMO data frame, parses the Group ID field in the VHT-SIG-A, and learns that the frame does not belong to the MU-MIMO packet itself, and does not need to reply to the ACK. STAs that have the same processing as STA3 also have STA5.
  • the information obtained by STA-6 to resolve the N STS domain includes:
  • the number of data streams of the STA in the second location in the MU-MIMO packet is zero, that is, the current transmission does not include the data of the STA in the second location in the MU-MIMO packet;
  • the number of data streams of the STA in the third location in the MU-MIMO packet is zero, that is, the data of the STA that does not include the third location in the MU-MIMO packet is transmitted this time;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • STA-4 occupies the third position in the MU-MIMO packet, and the current transmission does not have its own data, and there is no need to reply to the ACK.
  • the number of data streams of the STA in the second location in the MU-MIMO packet is zero, that is, the current transmission does not include the data of the STA in the second location in the MU-MIMO packet;
  • the number of data streams of the STA in the third location in the MU-MIMO packet is zero, that is, the data of the STA that does not include the third location in the MU-MIMO packet is transmitted this time;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • STA-6 occupies the second position in the MU-MIMO packet, so this transmission does not have its own data; although the MAC address in the RTS frame payload is itself MAC address, but according to the method of this practical application, STA-6 does not need to reply ACK.
  • the first reply ACK STA is STA-2;
  • the second reply ACK STA is STA-1.
  • Each MU-MIMO packet has a maximum of 4 STAs, and a MU-MIMO packet of less than 4 STAs is still considered to be composed of 4 STAs, and an insufficient portion can be considered to have a virtual STA.
  • the AP divides the six STAs into multiple MU-MIMO packets according to the channel state information of each STA, and notifies the corresponding STAs to the group information, assuming that the group number is sufficient, and each group number indicates only one MU-MIMO packet.
  • the identifier is represented by the MAC address of each STA.
  • Each STA receives the MU-MIMO packet information and detects it, but only STA-1, STA-2, STA-4, STA-6 will use this MU-MIMO packet information as useful information, because in the received information. There are STA identifiers that match themselves. The four STAs have useful information from this MU-MIMO packet information in two ways:
  • the relative positional order of the STAs identified by the MAC address carried in the MU-MIMO packet That is, the STAs identified by the MAC addresses carried in the data frame payload reply ACKs in the order of the relative positions of the packets.
  • Both STA-4 and STA-6 have a data stream transmission.
  • the MU-MIMO data packet transmission is performed, wherein the MAC address in the MAC address field in the RTS frame payload sent by the AP is the MAC address of the STA-6, and is included in the physical frame header of the RTS frame.
  • Group number Group ID 2 information.
  • the information obtained by STA-1 to resolve the N STS domain includes:
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • STA-1 occupies the fourth position in the MU-MIMO packet. . Based on the above information, STA-1 responds with ACK 4 in accordance with the method of this practical application.
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • STA-2 occupies the first position in the MU-MIMO packet. . Based on the above information, STA-2 replies to the first ACK according to the method of this practical application.
  • the STA-3 receives the MU-MIMO data frame, parses the Group ID field in the VHT-SIG-A, and knows that the frame does not belong to its own MU-MIMO packet, and does not need to reply to the ACK.
  • STAs that have the same processing as STA3 also have STA5.
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • STA-4 occupies the third position in the MU-MIMO packet. . Based on the above information, STA-4 replies to the third ACK according to the method of the actual application. (5) For STA-6
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • STA-6 occupies the second position in the MU-MIMO packet. Combining the above information, according to the method of the actual application, the STA-6 replies with the second ACK. The order in which the ACK is finally returned:
  • the first reply ACK STA is STA-2;
  • the second reply ACK STA is STA-6;
  • the third reply ACK STA is STA-4;
  • the fourth reply ACK STA is STA-1.
  • 9 STAs are represented as the first station (STA-1), the second station (STA-2), the third station (STA-3), and the fourth station (STA). -4), fifth station (STA-5), sixth station (STA-6), seventh station (STA-7), eighth station (STA-8), ninth station (STA-9).
  • STA-1 first station
  • STA-2 second station
  • STA-3 third station
  • STA-4 fourth station
  • STA-5 fifth station
  • STA-6 sixth station
  • STA-7 seventh station
  • STA-8 eighth station
  • STA-9 ninth station
  • Each MU-MIMO packet has a maximum of 4 STAs, and a MU-MIMO packet of less than 4 STAs is still considered to be composed of 4 STAs, and an insufficient portion can be considered to have a virtual STA.
  • the AP divides the nine STAs into multiple MU-MIMO packets according to the channel state information of each STA. And all the group information is notified to the STA, assuming that the group number is not enough, each group number can indicate multiple MU-MIMO packets, but there is such a constraint that if the same STA appears in multiple MUs indicated by the same group number In the MIMO packet, then the relative position of this STA in the group among these packets is fixed.
  • the AP issues MU-MIMO packet information, and the MU-MIMO packet information includes the group number.
  • the order in which the packet information is distributed is also in the order written above.
  • the STA identified by the MAC address carried in the RTS frame is this time.
  • the STA needs to reply ACK first, and the remaining STAs identified by the MAC address carried in the data frame payload reply ACK according to the relative position of the group.
  • the MU-MIMO data packet transmission is performed, wherein the MAC address in the MAC address field in the RTS frame payload sent by the AP is the MAC address of the STA-6, and is included in the physical frame header of the RTS frame.
  • Group number Group ID 2 information.
  • the information obtained by STA-1 to resolve the N STS domain includes:
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1; further analyzing the MAC address information in the frame payload, and discovering that its own MAC address is not included, so this transmission does not have its own data. .
  • STA-1 does not reply to ACK according to the method of this practical application.
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • the STA-2 occupies the first position in the MU-MIMO packet.
  • the MAC address in the RTS frame payload is the MAC address of the STA-6, and the STA is transmitted this time. -6 data.
  • STA-2 replies ACK 2 in accordance with the method of this practical application.
  • the STA-3 receives the MU-MIMO data frame, parses the Group ID field in the VHT-SIG-A, and knows that the frame does not belong to its own MU-MIMO packet, and does not need to reply to the ACK.
  • STAs that have the same processing as STA3 also have STA5, STA7, and STA8;
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • STA-4 occupies the third position in the MU-MIMO packet. . Based on the above information, STA-4 replies to the third ACK according to the method of the actual application. (5) For STA-6
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • STA-6 occupies the second position in the MU-MIMO packet; according to the received RTS frame, it can be known that the MAC address in the RTS frame payload is its own MAC address.
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • STA-9 occupies the fourth position in the MU-MIMO packet.
  • the MAC address in the RTS frame payload is the MAC address of STA-6, and the data of STA-6 is transmitted this time.
  • the first reply ACK STA is STA-6;
  • the second reply ACK STA is STA-2;
  • the third reply ACK STA is STA-4;
  • the 4th reply ACK STA is STA-9.
  • 9 STAs are represented as the first station (STA-1), the second station (STA-2), the third station (STA-3), and the fourth station (STA). -4), fifth station (STA-5), sixth station (STA-6), seventh station (STA-7), eighth station (STA-8), ninth station (STA-9).
  • STA-1 first station
  • STA-2 second station
  • STA-3 third station
  • STA-4 fourth station
  • STA-5 fifth station
  • STA-6 sixth station
  • STA-7 seventh station
  • STA-8 eighth station
  • STA-9 ninth station
  • Each MU-MIMO packet has a maximum of 4 STAs, and a MU-MIMO packet of less than 4 STAs is still considered to be composed of 4 STAs, and an insufficient portion can be considered to have a virtual STA.
  • the AP divides the nine STAs into multiple MU-MIMO packets according to the channel state information of each STA. And all the group information is notified to the STA, assuming that the group number is not enough, each group number can indicate multiple MU-MIMO packets, but there is such a constraint that if the same STA appears in multiple MUs indicated by the same group number In the MIMO packet, then the relative position of this STA in the group among these packets is fixed.
  • the AP issues MU-MIMO packet information, and the MU-MIMO packet information includes the group number.
  • the order in which the packet information is distributed is also in the order written above.
  • the STAs identified by the MAC addresses carried in the data frame payload reply to the ACK in the order of the relative positions of the packets.
  • the MU-MIMO data packet transmission is performed, wherein the MAC address in the MAC address field in the RTS frame payload sent by the AP is the MAC address of the STA-6, and is included in the physical frame header of the RTS frame.
  • Group number Group ID 2 information.
  • the information obtained by STA-1 to resolve the N STS domain includes:
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1; Further parsing the MAC address information in the frame load, and discovering that its own MAC address is not included, so this transmission does not have its own data;
  • STA-1 does not reply to ACK according to the method of this practical application.
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • STA-2 occupies the first position in the MU-MIMO packet. . Based on the above information, STA-2 replies to the first ACK according to the method of this practical application.
  • the STA-3 receives the MU-MIMO data frame, parses the Group ID field in the VHT-SIG-A, and knows that the frame does not belong to its own MU-MIMO packet, and does not need to reply to the ACK.
  • STAs that have the same processing as STA3 also have STA5, STA7, and STA8;
  • the number of data streams of the STA in the second location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • STA-4 occupies the third position in the MU-MIMO packet. . Based on the above information, STA-4 replies to the third ACK according to the method of the actual application. (5) For STA-6
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1;
  • STA-6 occupies the second position in the MU-MIMO packet. Based on the above information, STA-6 replies to the second ACK according to the method of the present application. (6) For STA-9
  • the information obtained by the STA-9 to parse the N STS domain includes:
  • the number of data streams of the STA in the third location in the MU-MIMO packet is 1;
  • the number of data streams of the STA in the fourth position in the MU-MIMO packet is 1; further analyzing the MAC address information in the frame payload, and discovering that its own MAC address is included, so the current transmission has its own data; According to the foregoing, STA-9 occupies the fourth position in the MU-MIMO packet;
  • the first reply ACK STA is STA-2;
  • the second reply ACK STA is STA-6;
  • the third reply ACK STA is STA-4;
  • the 4th reply ACK STA is STA-9.
  • Embodiment 2 A site for feedback confirmation message (STA)
  • the STA of this embodiment is applied to reply to an access point AP in a BSS, which is associated with one or more other STAs and APs, and mainly includes a first receiving module 210, a second receiving module 220, and a feedback module. 230, where:
  • the first receiving module 210 is configured to: receive the RTS and the packet information sent by the AP, and learn, according to the packet information, the packet number of the MU-MIMO packet in which the STA itself is located and the relative location information of the STA itself in the MU-MIMO packet;
  • the second receiving module 220 is configured to: receive the MU-MIMO data frame;
  • the feedback module 230 is connected to the first receiving module 210 and the second receiving module 220, and is configured to: according to the packet number field and the N STS field included in the VHT-SIG-A in the physical frame header of the MU-MIMO data frame.
  • the AP performs MU-MIMO grouping on the STAs associated with each of the STAs according to the channel state information, the data traffic volume, the data service type, and the like of each STA, and specifies a packet number for each MU-MIMO packet.
  • the packet information is separately constructed, and the packet information is notified to the STA by signaling.
  • the feedback module 230 is configured to reply the ACK message in the order of the STAs in the MU-MIMO packet.
  • the feedback module 230 may be configured to: reply the ACK message in order according to the relative position of the STAs identified by the MAC address carried in the MU-MIMO data frame payload in the MU-MIMO packet.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device, which can be centralized on a single computing device or distributed over a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be fabricated into individual integrated circuit modules, or many of them Modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
  • the STAs in the MU-MIMO packet can reply ACKs in an orderly manner without additional signaling, and collisions are avoided between each other, and STAs without data transmission in the group need not transmit.
  • ACK also saves signaling overhead. It also guarantees that the services of the primary STAs are given priority and therefore have strong industrial applicability.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé pour un retour d'accusé de réception (ACK) à utilisateurs multiples et une station (STA) pour le retour d'un ACK. Le procédé est utilisé pour des STA liées à un point d'accès (AP) dans un ensemble de services de base (BSS) pour répondre avec des ACK, et comprend les étapes suivantes : après la répartition des STA liées à l'AP en des groupes à entrées multiples, sorties multiples, utilisateurs multiples (MU-MIMO), l'attribution d'une identification de groupe (ID) et la création d'informations de groupe pour chaque groupe MU-MIMO respectivement, l'AP notifie aux STA les informations de groupe ; après la réception d'une trame de demande d'envoi (RTS) et d'une trame de données MU-MIMO, selon les informations de groupe, la trame RTS, le domaine d'ID de groupe et les informations indiquées par le domaine d'indication informations de flux de données de station NSTS contenu dans un VHT-SIG-A de l'en-tête de trame physique de la trame de données MU-MIMO, les informations d'adresse de contrôle d'accès au support (MAC) dans la charge de trame physique de la trame de données MU-MIMO et les informations de groupe MU-MIMO avec l'ID de groupe indiquée par le domaine d'ID de groupe, la STA détermine la STA ayant besoin de répondre avec un ACK et répond avec l'ACK dans un ordre convenu.
PCT/CN2011/076722 2010-09-01 2011-06-30 Procédé pour un retour d'accusé de réception à utilisateurs multiples, et station pour le retour d'un accusé de réception WO2012028030A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113507345A (zh) * 2015-03-06 2021-10-15 交互数字专利控股公司 用于无线局域网长符号持续时间迁移的方法和系统

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103684662A (zh) * 2012-09-10 2014-03-26 华为技术有限公司 通信方法与装置
US9923657B2 (en) * 2013-03-12 2018-03-20 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
CN103227698B (zh) * 2013-04-28 2016-06-08 重庆邮电大学 Lte系统中一种多用户有限反馈开销降低方法
CN105376032A (zh) * 2014-08-25 2016-03-02 华为技术有限公司 一种用于无线局域网络中传输数据的方法和装置
EP3266136A1 (fr) 2015-03-06 2018-01-10 Interdigital Patent Holdings, Inc. Optimisation de paquets courts dans des systèmes de réseau local sans fil (wlan)
WO2017128882A1 (fr) * 2016-01-27 2017-08-03 海能达通信股份有限公司 Procédé de transmission de données, dispositif terminal, dispositif côté réseau et système
US20220304008A1 (en) * 2019-09-10 2022-09-22 Beijing Xiaomi Mobile Software Co., Ltd. Data transmission method and apparatus and storage medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101668338A (zh) * 2009-09-27 2010-03-10 新邮通信设备有限公司 在时分双工系统中实现多用户多输入多输出的方法和设备
CN101808385A (zh) * 2010-03-02 2010-08-18 北京邮电大学 一种无线网络的接入控制方法及装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101668338A (zh) * 2009-09-27 2010-03-10 新邮通信设备有限公司 在时分双工系统中实现多用户多输入多输出的方法和设备
CN101808385A (zh) * 2010-03-02 2010-08-18 北京邮电大学 一种无线网络的接入控制方法及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JOONSUK KIM ET AL.: "GroupID Concept for Downlink MU-MIMO Transmission", IEEE, 15 March 2010 (2010-03-15), Retrieved from the Internet <URL:https://mentor.ieee.org/802.11/dcn/10/11-10-0073-02-00ac-group-id-concept-for-dl-mu-mimo.ppt> *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113507345A (zh) * 2015-03-06 2021-10-15 交互数字专利控股公司 用于无线局域网长符号持续时间迁移的方法和系统

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