WO2017067208A1 - 无线局域网中站点间直接通信的方法及相关设备 - Google Patents

无线局域网中站点间直接通信的方法及相关设备 Download PDF

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Publication number
WO2017067208A1
WO2017067208A1 PCT/CN2016/087459 CN2016087459W WO2017067208A1 WO 2017067208 A1 WO2017067208 A1 WO 2017067208A1 CN 2016087459 W CN2016087459 W CN 2016087459W WO 2017067208 A1 WO2017067208 A1 WO 2017067208A1
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Prior art keywords
data frame
frame
station
field
indication information
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PCT/CN2016/087459
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English (en)
French (fr)
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林英沛
苏宏家
朱俊
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2018520176A priority Critical patent/JP6786596B2/ja
Priority to KR1020207009064A priority patent/KR102137074B1/ko
Priority to EP16856648.7A priority patent/EP3355595B1/en
Priority to KR1020187014010A priority patent/KR102096939B1/ko
Publication of WO2017067208A1 publication Critical patent/WO2017067208A1/zh
Priority to US15/957,046 priority patent/US10499336B2/en
Priority to US16/690,649 priority patent/US11082923B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/14—Mobility data transfer between corresponding nodes
    • 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]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications, and more particularly to a method and related apparatus for direct communication between stations in a wireless local area network.
  • WLAN Wireless Local Area Networks
  • IEEE Institute of Electrical and Electronics Engineers 802.11 series is the main standard of WLAN, and has experienced 802.11, 802.11b/g. /a, 802.11n, 802.11ac generations of mainstream standards.
  • the WLAN technology is based on a computer network and a wireless communication technology
  • a logical link control (LLC) layer and an application layer thereon are applied to different physical layers (PHYsical, referred to as PHY for short).
  • PHY Physical layers
  • the requirements can be the same or different. Therefore, the WLAN standard is mainly for the physical layer and the medium access control layer (Media Access Control, MAC for short), which relates to the wireless frequency range and air interface communication used.
  • Technical specifications and technical standards such as agreements.
  • the physical layer frame in the WLAN standard is also called the Physical Layer Convergence Procedure (PLCP) Data Unit (PLCP Protocol Data Unit, PPDU for short), and is serviced by the PLCP Header and PLCP.
  • Data unit PLCP Service Data Unit (referred to as: PSDU).
  • PSDU Data unit
  • the PLCP Header mainly includes the training field and signaling (SIGNAL, referred to as: SIG) field.
  • SIGNAL SIGNAL
  • SIG SIGNAL
  • the PSDU includes a MAC header field and a MAC Service Data Unit.
  • the 802.11ax standard also known as High Efficiency WLAN (HEW), standard
  • HEW High Efficiency WLAN
  • the 802.11ax standard will use Orthogonal Frequency Division Multiple Access (OFDMA) as one of the main technical points to improve transmission efficiency.
  • OFDMA Orthogonal Frequency Division Multiple Access
  • the signaling is divided into first high efficiency signaling (HE-SIG-A) and second high efficiency signaling (HE-SIG-B), wherein the first high efficiency signaling includes SU/MU indication information and UL/DL indication information, the SU/MU indication information is used to indicate whether the type of subsequent data transmission of the first high efficiency signaling is single-user transmission or multi-user transmission; when only for SU transmission
  • the HE-SIG-A includes UL/DL indication information, and the indication information is used to indicate whether the currently performed data packet transmission type is uplink transmission or downlink transmission.
  • the MAC frame header based on the 802.11 system includes fields such as a Frame Control field, a Transmitter Address (TA) of a data packet, and a Receiver Address RA.
  • the frame control field includes a ToDistributed System (To DS) field and a From DS field, the To DS field and the From DS field are used to describe whether a data packet is from a distributed system and Whether to go to a distributed system.
  • the distributed system here refers to a system used to interconnect a set of basic service sets (BSSs) and integrated local area networks (BSs) for connecting multiple basic service sets (BSS) and integrating multiple local area networks (BSs). ) to create an extended service set (ESS).).
  • BSSs basic service sets
  • BSs integrated local area networks
  • ESS extended service set
  • the HE-SIG-A when the SU/MU in the HE-SIG-A is indicated as SU, the HE-SIG-A includes the UL/DL field.
  • the indication field is used to describe whether the transmission direction of the PPDU is uplink (UL, uplink, transmission from the STA to the AP) or downlink (DL, downlink, transmission from the AP to the STA).
  • Direct communication between sites and sites is an important communication method for 802.11 WLAN systems. Data transmission between sites does not need to pass through the AP, but is directly transmitted between the two sites. There is no uplink or downlink distinction between direct communication between sites.
  • D2D Device-to-Device
  • Embodiments of the present invention provide WLAN (Wireless Local Area Networks)
  • the method for indicating the signaling in the network solves the problem that the PPDU transmission type indication for the direct STA-to-STA link (DSSL) is not currently in the WLAN system.
  • DSSL direct STA-to-STA link
  • a method for direct communication between sites in a wireless local area network includes:
  • the first station sends a data frame to the second station
  • the data frame includes a first high efficiency signaling field, the first high efficiency signaling field includes first indication information indicating that the data frame is a single user (SU) data frame, and is used to indicate that the data frame is Second indication information of the downlink (DL) data frame.
  • first high efficiency signaling field includes first indication information indicating that the data frame is a single user (SU) data frame, and is used to indicate that the data frame is Second indication information of the downlink (DL) data frame.
  • the data frame further includes a MAC header field; the To DS field in the MAC header field is “0”, and the first station configures the From DS field to “0”.
  • a method for direct communication between stations in a wireless local area network includes:
  • the data frame includes a first high efficiency signaling field, where the first high efficiency signaling field includes a first part for indicating that the data frame is a single user (SU) data frame An indication information and second indication information for indicating that the data frame is a downlink (DL) data frame;
  • the second station determines, according to the second indication information, that the subsequent data transmission of the MAC header domain is DL transmission or DSSL transmission.
  • the data frame received by the second station further includes a MAC header field; if the To DS field in the MAC header field is "0" and the From DS field is "0", the second station determines that Subsequent data transmissions of the MAC header field are DSSL transmissions.
  • a site is capable of D2D communication with other sites, including:
  • a transceiver for transmitting data frames to the second station
  • the data frame includes a first high efficiency signaling field, the first high efficiency signaling field includes first indication information indicating that the data frame is a single user (SU) data frame, and is used to indicate that the data frame is Second indication information of the downlink (DL) data frame.
  • first high efficiency signaling field includes first indication information indicating that the data frame is a single user (SU) data frame, and is used to indicate that the data frame is Second indication information of the downlink (DL) data frame.
  • the data frame further includes a MAC header field; the To DS field in the MAC header field is “0”, and the first station configures the From DS field to “0”.
  • a site is capable of D2D data transmission with other sites, including:
  • a transceiver configured to receive a data frame sent by the first station;
  • the data frame includes a first high efficiency signaling field, where the first high efficiency signaling field includes a data frame for indicating that the data frame is a single user (SU)
  • a processor configured to determine, according to the second indication information, that the data transmission is DL transmission or DSSL transmission.
  • the data frame further includes a MAC header field; if the To DS field in the MAC header field is “0” and the From DS field is “0”, the processor determines subsequent data of the MAC header field.
  • the transmission is a DSSL transmission.
  • the method for directly communicating between sites in a wireless local area network according to an embodiment of the present invention and the station using the method configure SU/MU indication information in an efficient signaling field as an SU, and the UL/DL indication information in an efficient signaling field as a DL
  • the problem that the data transmission type indication for the direct communication link between the stations is not yet implemented in the WLAN system is solved.
  • FIG. 1 is a diagram showing an example of an application scenario in accordance with the present invention.
  • FIG. 2 is a block diagram of an SU frame in accordance with an embodiment of the present invention.
  • FIG. 3 is a structural diagram of a MU downlink frame mentioned in the embodiment of the present invention.
  • FIG. 4 is a structural diagram of an MU upstream frame mentioned in the embodiment of the present invention.
  • FIG. 5 is a field included in the high efficiency signaling HE-SIG-A in the SU frame structure in the embodiment of the present invention.
  • Figure 6 is a block diagram of a MAC frame of the present invention.
  • FIG. 7 is a flow chart of a method of direct communication between stations in a wireless local area network of the present invention.
  • Figure 8 is a diagram showing the composition of a first station in an embodiment of the present invention.
  • Figure 9 is a diagram showing the composition of a second station in the embodiment of the present invention.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Access
  • LTE Long Term Evolution
  • WLAN Wireless Local Area Network
  • a base station in a wireless local area network is also called an access point (AP), and a UE in a wireless local area network is also called a station (Station, STA).
  • AP access point
  • STA UE in a wireless local area network
  • the embodiment of the present invention provides a method for indicating signaling in a WLAN, and solves the problem that the PPDU transmission type indication for a direct STA-to-STA link (DSSL) is not currently in the WLAN system.
  • DSSL direct STA-to-STA link
  • a method for direct communication between sites in a wireless local area network includes:
  • the first station generates a frame including the first efficient signaling
  • the first station configures the SU/MU indication information in the first high-efficiency signaling to be an SU, and configures the UL/DL indication information in the first high-efficiency signaling to be a DL;
  • the first station transmits a frame including the first efficient signaling (step S10 in FIG. 7).
  • the first station generates a MAC header field
  • the first station configures a To DS field in the MAC header field to be “0”
  • the first station configures the From DS field to “0” .
  • the first station sends the MAC header field.
  • a method of direct communication between stations in a wireless local area network including
  • the second station receives the frame including the first efficient signaling (step S20 in Fig. 7).
  • the SU/MU indication information that the second station reads the first high efficiency signaling is an SU. Determining that the currently received data transmission is an SU transmission.
  • the second station reads the UL/DL indication information of the first high efficiency signaling as a DL. Determine whether the current data transmission is DL transmission or DSSL transmission.
  • the second station receives the read MAC header field.
  • the second station reads that the To DS field in the MAC header field is “0” and the From DS field is “0”, and determines that the subsequent data transmission of the MAC header field is DSSL transmission.
  • FIG. 2 shows a structure of a SU frame in the embodiment of the present invention
  • FIG. 3 and FIG. 4 show a structure diagram of a MU downlink frame and an MU uplink frame.
  • FIG. 5 shows a field included in the SU-SIG-A in the SU frame structure in the embodiment of the present invention
  • FIG. 6 shows a MAC frame structure diagram in the present invention.
  • the 11ax system there are two frame structures, one is a frame format for SU (single-user) transmission (as shown in Figure 2), and the other is a frame structure for multi-user (MU) transmission, in which a multi-user transmission frame structure
  • the downlink transmission frame structure and the uplink transmission frame structure are included (as shown in FIGS. 3 and 4, respectively).
  • the frame structure of the SU or the MU is determined by the Format indication indication information in the HE-SIG-A.
  • the Format indication When the Format indication is indicated as SU, it is judged that the currently transmitted frame is a SU frame; when the Format indication indicates MU, the HE-SIG-A can be distinguished by the modulation method of the bearer symbol of the HE-SIG-A, for example, When the modulation phase of the HE-SIG-A is rotated, it indicates that the current frame contains the HE-SIG-B field, indicating that the current frame is the MU downlink frame. If no rotation occurs, the current frame is the MU uplink frame.
  • the modulation phase of the HE-SIG-A may be rotated to indicate the MU uplink frame, and the modulation phase of the HE-SIG-A is not rotated to indicate the MU downlink frame.
  • the HE-SIG-A field structure is as shown in FIG. 3, and includes BSS Color, TXOP duration, Format indication, BW, paylaod GI, PE, UL/DL Indication, MCS, coding, LTF Compression. , DCM indication, NSTS, STBC, BF, CRC, Tail and other fields.
  • the BSS Color indicates the ID information of the AP related to the current frame.
  • the BSS Color in the frame sent by the AP indicates the ID of the AP
  • the BSS Color in the frame sent by the STA indicates the ID of the AP associated with the STA.
  • the TXOP duration indicates the current The remaining duration of the TXOP
  • the Format indication indicates whether the SU transmission or the MU transmission
  • the BW indicates the transmission bandwidth
  • the payload GI indicates the guard interval or the cyclic prefix (CP) length used by the data transmission portion
  • the PE indicates the packet extension length
  • UL/ The DL Indication indicates whether the data frame is transmitted from the STA to the AP (UL) or from the AP to the STA (DL)
  • the MCS is used to indicate the coding and modulation strategy used for the data part transmission
  • the coding is used to indicate the coding mode
  • the LTF Compression indicates Whether HE-LTF part is compressed mode HE-LTF
  • DCM indication Indicates whether dual carrier modulation (DCM) is used
  • NSTS indicates the number of space
  • HE-SIG-A used for transmission verification of HE-SIG-A. Since HE-SIG-A and the subsequent data portions are separately subjected to binary convolutional code encoding, the 6 bits of the tail are set to 0 for clearing the encoder and the decoder.
  • the direct communication between the site and the site uses the transmission frame format of the SU because it is a communication between individual users.
  • the receiving end may enter if it finds that the data packet is sent by the STA in the BSS (determined by the BSS ID information carried in the data packet). Sleep state. Therefore, the UL/DL indication field in the HE-SIG-A in the data packet of the direct communication between the station and the station is indicated as DL.
  • the specific steps for packet transmission between the site and the site are as follows:
  • the transmitting station generates a frame for direct communication between the station and the station, wherein the SU/MU in the HE-SIG-A is indicated as SU and the UL/DL is indicated as DL.
  • the sending station sets the To DS field in the MAC frame header field in the directly communicating frame to “0”, and the first station configures the From DS field to “0” to indicate that the communication frame is a site and A frame that communicates directly between sites.
  • the structure of the MAC frame header is shown in Figure 6.
  • the receiving end of the direct communication between the station and the station After the receiving end of the direct communication between the station and the station receives a frame, it first determines, according to the BSS ID information field in the HE-SIG-A, that the frame is the communication frame sent by the AP or the STA of the BSS to which it is associated, further according to the SU. /MU indicates whether or not it is the frame structure of the SU. If it is the frame structure of the SU, the UL/DL field in the HE-SIG-A is read to determine whether or not the DL transmission is performed.
  • the receiving end reads the To DS field and the From DS field in the MAC frame header in the communication frame. . If both the To DS field and the From DS field are indicated as 0, it is determined that the communication frame is a communication frame in which the station directly communicates with the station, and further reads the transmission address field and the reception address field to determine whether the communication frame is sent to itself, Determine whether or not to perform subsequent receiving processing.
  • a method for transmitting an indication of a direct communication link data packet between stations in a wireless local area network is provided:
  • the first site generates the first efficient signaling.
  • the first station configures the SU/MU indication information in the first high-efficiency signaling to be an SU, and configures the UL/DL indication information in the first high-efficiency signaling to be a DL;
  • the first high-efficiency signaling includes DSSL indication information, which is used to indicate the currently transmitted data transmission. Lost as DSSL transmission.
  • the first station generates and sends the first efficient signaling
  • the second station receives the read first efficient signaling.
  • the SU/MU indication information that the second station reads the first high efficiency signaling is an SU. Determining that the currently received data transmission is an SU transmission.
  • the second station reads the UL/DL indication information of the first high efficiency signaling as a DL.
  • the second station determines that the current data transmission is a DL transmission or a DSSL transmission.
  • the second station reads the DSSL indication information of the first high-efficiency signaling, and determines that the current data transmission is a DSSL transmission.
  • the frame structure of the SU or the MU is determined by the SU/MU indication information in the HE-SIG-A.
  • the SU/MU indication may be distinguished by the modulation scheme of the bearer symbol of the HE-SIG-A, or may be explicitly indicated by using an explicit field in the HE-SIG-A domain.
  • the direct communication between the site and the site uses the transmission frame format of the SU because it is a communication between individual users.
  • the receiving end may enter if it finds that the data packet is sent by the STA in the BSS (determined by the BSS ID information carried in the data packet). Sleep state. Therefore, the UL/DL indication field in the HE-SIG-A in the data packet of the direct communication between the station and the station is indicated as DL.
  • 1-bit indication information is used in the HE-SIG-A to indicate whether the communication frame is a frame for direct communication between the station and the station.
  • the transmitting station generates a frame for direct communication between the station and the station, wherein the SU/MU in the HE-SIG-A is indicated as SU and the UL/DL is indicated as DL.
  • the sending station sets the indication of direct communication between the station in the HE-SIG-A and the station to Yes (for example, 1 means Yes, 0 means No).
  • the receiving end of the direct communication between the station and the station After receiving the frame, the receiving end of the direct communication between the station and the station first determines, according to the BSS ID information field in the HE-SIG-A, that the frame is the communication frame sent by the AP or the STA of the BSS to which it is associated, if it is the present.
  • the communication frame sent by the AP or STA of the BSS is further advanced.
  • the step judges whether it is the frame structure of the SU according to the SU/MU indication in the HE-SIG-A. If it is the frame structure of the SU, the UL/DL field in the HE-SIG-A is read to determine whether or not the DL transmission is performed.
  • the receiving end When the communication frame is an SU transmission frame structure and the UL/DL indication in the HE-SIG-A is DL, the receiving end reads the site in the HE-SIG-A in the communication frame directly between the stations Instructions for communication. If the indication information is only Yes, determining that the communication frame is a communication frame in which the station directly communicates with the station, further reading a transmission address field and a reception address field in the MAC frame header, and determining whether the communication frame is sent to the user, Determine whether or not to perform subsequent receiving processing.
  • a method for transmitting an indication of a direct communication link data packet between stations in a wireless local area network is provided:
  • the first site generates the first efficient signaling.
  • the first station configures the SU/MU indication information in the first high-efficiency signaling to be an SU, and configures the UL/DL indication information in the first high-efficiency signaling to be a DL;
  • the first station sends the first high efficiency signaling.
  • the first site generates a MAC header field:
  • the first station configures a sending address field in the MAC header field to be the first station MAC address, and the first station configures a receiving address field in the MAC header field to be a second station MAC address.
  • the first station sends the MAC header field.
  • a method of receiving an indication of a direct communication link data packet between stations in a wireless local area network is provided.
  • the second station receives the read first efficient signaling.
  • the SU/MU indication information that the second station reads the first high efficiency signaling is an SU.
  • the subsequent data transmission of the first efficient signaling is determined to be an SU transmission.
  • the second station reads the UL/DL indication information of the first high efficiency signaling as a DL.
  • the subsequent data transmission of the first efficient signaling is determined to be a DL transmission or a DSSL transmission.
  • the second station receives the read MAC header field.
  • the second station reads that the sending address field in the MAC header field is the first station MAC address, and the first station configures the receiving address field in the MAC header field to be the second station MAC address. And determining that the subsequent data transmission of the MAC header field is a DSSL transmission.
  • the frame structure of the SU or the MU is determined by the SU/MU indication information in the HE-SIG-A.
  • the SU/MU indication may be distinguished by the modulation scheme of the bearer symbol of the HE-SIG-A, or may be explicitly indicated by using an explicit field in the HE-SIG-A domain.
  • the direct communication between the site and the site uses the transmission frame format of the SU because it is a communication between individual users.
  • the receiving end may enter if it finds that the data packet is sent by the STA in the BSS (determined by the BSS ID information carried in the data packet). Sleep state. Therefore, the UL/DL indication field in the HE-SIG-A in the data packet of the direct communication between the station and the station is indicated as DL.
  • the specific steps for packet transmission between the site and the site are as follows:
  • the transmitting station generates a frame for direct communication between the station and the station, wherein the SU/MU in the HE-SIG-A is indicated as SU and the UL/DL is indicated as DL.
  • the transmitting station sets the sending address field in the MAC frame header field of the direct communication frame to its own MAC address, and sets the receiving address field to the MAC address of the receiving end for direct communication between the station and the station.
  • the receiving end of the direct communication between the station and the station first determines, according to the BSS ID information field in the HE-SIG-A, that the frame is the communication frame sent by the AP or the STA of the BSS to which it is associated, if it is the present.
  • the communication frame sent by the AP or STA of the BSS is further determined according to the SU/MU indication in the HE-SIG-A to determine whether it is the frame structure of the SU. If it is the frame structure of the SU, the UL/DL field in the HE-SIG-A is read to determine whether or not the DL transmission is performed.
  • the receiving end reads a transmission address field and a reception address field in a MAC frame header in the communication frame. . If the sending address field is the same as the MAC address of the peer directly communicating with the site and the site, and the receiving address is the same as its own MAC address, it is determined whether the communication frame is sent to itself to determine the subsequent receiving process.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the present invention also provides a related apparatus for performing the method in the above embodiment.
  • the first site 100 can perform D2D communication with other sites, including:
  • the transceiver 110 is configured to send a data frame to the second station;
  • the data frame includes a first high-efficiency signaling field, where the first high-efficiency signaling field includes an indication that the data frame is a single-user (SU) data frame
  • the storage 130 is configured to store related information for performing the method in the foregoing embodiment
  • the processor 120 is configured to execute the method in the foregoing embodiment.
  • the data frame further includes a MAC header field; the To DS field in the MAC header field is “0”, and the first station configures the From DS field to “0”.
  • the second station 200 can perform D2D data transmission with other stations, including:
  • the transceiver 210 is configured to receive a data frame sent by the first station, where the data frame includes a first high-efficiency signaling field, where the first high-efficiency signaling field includes, to indicate that the data frame is single-user (SU) data.
  • the processor 220 is configured to determine, according to the second indication information, that the data transmission is a DL transmission or a DSSL transmission,
  • the memory 130 is configured to store related information for performing the method in the above embodiment.
  • the processor 710 may be a central processing unit (“CPU"), and the processor 710 may also be other general-purpose processors, digital signal processors (DSPs). , an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, and the like.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the memory 720 can include read only memory and random access memory and provides instructions and data to the processor 710. A portion of the memory 720 can also include a non-volatile random access memory. For example, the memory 720 can also store information of the device type.
  • the bus system 730 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 730 in the figure.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the D2D site receives an uplink indication.
  • UPLINK uplink indication
  • the D2D device can maintain a non-sleep state for normal D2D transmission.
  • the UL/DL indication (UP/DL indication) in the HE-SIG-A can also be replaced by a UPLINK_FLAG flag.
  • a STA transmitting an HE SU PPDU that is addressed to an AP shall set the TXVECTOR parameter UPLINK_FLAG to 1
  • the UPLINK_FLAG in the HE SU PPDU sent by the station to the access point is set to 1, it indicates that the HE SU PPDU is an uplink frame;
  • An AP transmitting an HE SU PPDU that is addressed to a non-AP STA shall set the TXVECTOR parameter UPLINK_FLAG to 0
  • Embodiment 5 of the present invention discloses a method for direct communication between sites in a wireless local area network, including:
  • the first station sends a data frame to the second station
  • the data frame includes a first high-efficiency signaling field, where the first high-efficiency signaling field includes first indication information indicating that the data frame is a single-user (SU) data frame, and is used to indicate whether the data frame is The second indication information of the uplink frame.
  • first high-efficiency signaling field includes first indication information indicating that the data frame is a single-user (SU) data frame, and is used to indicate whether the data frame is The second indication information of the uplink frame.
  • the data frame is an uplink frame
  • the data frame is a non-uplink frame
  • a fifth embodiment of the present invention further discloses a site 100 capable of performing D2D communication with other sites, including:
  • the transceiver 110 is configured to send a data frame to the second station 200;
  • the data frame includes a first high-efficiency signaling field, where the first high-efficiency signaling field includes first indication information indicating that the data frame is a single-user (SU) data frame, and is used to indicate whether the data frame is The second indication information of the uplink frame.
  • first high-efficiency signaling field includes first indication information indicating that the data frame is a single-user (SU) data frame, and is used to indicate whether the data frame is The second indication information of the uplink frame.
  • the data frame is an uplink frame
  • the data frame is a non-uplink frame
  • Embodiment 5 of the present invention further discloses a method for direct communication between sites in a wireless local area network, including:
  • the data frame includes a first high efficiency signaling field, where the first high efficiency signaling field includes a first part for indicating that the data frame is a single user (SU) data frame An indication information and second indication information for indicating whether the data frame is an uplink frame;
  • first high efficiency signaling field includes a first part for indicating that the data frame is a single user (SU) data frame
  • the second station determines, according to the second indication information, that the subsequent data transmission of the MAC header domain is DL transmission or DSSL transmission.
  • the data frame is an uplink frame
  • the second indication information is 0, the data frame is a non-uplink frame.
  • the sixth embodiment of the present invention also discloses a station 200, which can perform D2D data transmission with other stations, and includes:
  • the transceiver 210 is configured to receive a data frame sent by the first station 100, where the data frame includes a first high-efficiency signaling field, where the first high-efficiency signaling field is used to indicate that the data frame is a single user (SU) First indication information of the data frame and second indication information used to indicate whether the data frame is an uplink frame; and
  • the processor 220 is configured to determine, according to the second indication information, whether the data transmission is a non-uplink transmission, and the non-uplink transmission includes a DL transmission or a DSSL transmission.
  • the data frame is an uplink frame
  • the second indication information is 0, the data frame is a non-uplink frame.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 910 or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 920, and the processor 910 reads the information in the memory 920 and completes the steps of the above method in combination with its hardware.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

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Abstract

本发明公开了一种无线局域网中站点间直接通信的方法及相关站点，该无线局域网中站点间直接通信的方法包括：第一站点发送数据帧给第二站点；所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户（SU）数据帧的第一指示信息及用于指示所述数据帧是下行（DL）数据帧的第二指示信息。

Description

无线局域网中站点间直接通信的方法及相关设备
本申请要求于2015年11月3日提交中国专利局、申请号为CN201510741092.3、发明名称为“无线局域网中站点直接通信的方法及相关设备”的CN专利申请的优先权，本申请还要求于2015年10月20日提交中国专利局、申请号为CN201510685539.X、发明名称为“无线局域网中站点直接通信的方法及相关设备”的CN专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信领域，并且更具体地，涉及一种无线局域网中站点间直接通信的方法及相关设备。
背景技术
无线局域网(Wireless Local Area Networks，简称：WLAN)是一种利用无线射频技术在空中进行数据传输的网络系统。随着智能终端的广泛应用，人们对数据网络流量的需求日益增长，通过WLAN来承载这些流量已经成为非常重要的信息数据传输方式之一。
WLAN技术的发展离不开其标准的制定与推广应用，其中，电子和电气工程师协会(Institute of Electrical and Electronics Engineers，简称：IEEE)802.11系列是WLAN主要标准，先后经历了802.11，802.11b/g/a，802.11n，802.11ac几代主流标准。
由于WLAN技术基于计算机网络与无线通信技术，而在计算机网络结构中，逻辑链路控制(Logical Link Control，简称：LLC)层及其之上的应用层对不同的物理层(PHYsical，简称：PHY)的要求可以是相同的，也可以是不同的，因此，WLAN标准主要是针对物理层和媒质访问控制层(Media Access Control，简称：MAC)，涉及到所使用的无线频率范围、空中接口通信协议等技术规范与技术标准。
WLAN标准中的物理层帧也称作是物理层汇聚过程(Physical Layer Convergence Procedure，简称：PLCP)协议数据单元(PLCP Protocol Data Unit，简称：PPDU)，是由PLCP头域(Header)和PLCP服务数据单元(PLCP  Service Data Unit，简称：PSDU)组成的。其中PLCP Header主要包含了训练字段和信令(SIGNAL,简称：SIG)字段。所述PSDU中包含了MAC头域(Header)和MAC协议服务数据单元(MAC Service Data Unit)。
目前，正在研究和制定中的802.11ax标准(又称为高效无线局域网,High Efficiency WLAN(HEW),标准)继续演进着WLAN技术。802.11ax标准将使用正交频分多址接入(Orthogonal Frequency Division Multiple Access，简称：OFDMA)作为主要技术点之一来提升传输效率。
目前基于802.11ax系统的信令设计，所述信令分为第一高效信令(HE-SIG-A)和第二高效信令(HE-SIG-B)，其中第一高效信令包含了SU/MU指示信息和UL/DL指示信息，所述SU/MU指示信息用于指示所述第一高效信令的后续数据传输的类型是单用户传输还是多用户传输；当只是为SU传输时，HE-SIG-A中包含UL/DL指示信息，该指示信息用于指示当前进行的数据包传输类型是上行传输还是下行传输。
目前基于802.11系统的MAC帧头包含了帧控制(Frame Control)字段、数据包的发送地址(Transmitter Address,TA)、接收地址(Receiver Address RA)等字段。所述帧控制字段包含了到达分布式系统(To DS)字段和来自分布式系统(From DS)字段，所述To DS字段和所述From DS字段用于描述数据包是否从分布式系统来以及是否去往分布式系统。这里的分布式系统是指用于连接多个基本服务集(BSS)以及集成多个局域网以建立一个扩展服务集(A system used to interconnect a set of basic service sets(BSSs)and integratedlocal area networks(LANs)to create an extended service set(ESS).)。
在11ax系统中，HE-SIG-A中的SU/MU指示为SU时，HE-SIG-A中包含UL/DL字段。该指示字段用于描述该PPDU的传输方向是上行(UL，uplink，从STA向AP传输)还是下行(DL，downlink，从AP向STA传输)。站点到站点之间的直接通信是802.11WLAN系统的一种重要通信方式，站点之间的数据传输不需要经过AP，而是两个站点之间直接进行传输。站点之间的直接通信没有上行或者下行的区分，在Device-to-Device(D2D)数据传输时，HE-SIG-A的UL/DL指示字段没有用于指示上行或者下行的信息。
发明内容
本发明实施例提供WLAN(Wireless Local Area Networks，无线局域网 络)中的信令的指示方法，解决了目前在WLAN系统中还没有针对站点间直接通信链路(DSSL，Direct STA-to-STA Link)PPDU传输类型指示的问题。
第一方面，一种无线局域网中站点间直接通信的方法，包括：
第一站点发送数据帧给第二站点；
所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是下行(DL)数据帧的第二指示信息。
进一步地，所述数据帧还包括MAC头域；所述MAC头域中的To DS字段为“0”，所述第一站点配置所述From DS字段为“0”。
第二方面，一种无线局域网中站点间直接通信的方法，包括：
第二站点接收第一站点发送的数据帧；所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是下行(DL)数据帧的第二指示信息；
所述第二站点根据所述第二指示信息判断所述MAC头域的后续数据传输为DL传输或DSSL传输。
进一步地，所述第二站点接收的数据帧还包括MAC头域；如果所述MAC头域中的To DS字段为“0”且From DS字段为“0”，所述第二站点判断所述MAC头域的后续数据传输为DSSL传输。
第三方面，一种站点，能与其它站点进行D2D通信，其包括：
收发器，用于发送数据帧给第二站点；
所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是下行(DL)数据帧的第二指示信息。
进一步地，所述数据帧还包括MAC头域；所述MAC头域中的To DS字段为“0”，所述第一站点配置所述From DS字段为“0”。
第四方面，一种站点，能与其它站点进行D2D数据传输，其包括：
收发器，用于接收第一站点发送的数据帧；所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是下行(DL)数据帧的第二指示信息；
处理器，用于根据所述第二指示信息判断数据传输为DL传输或DSSL 传输。
进一步地，所述数据帧还包括MAC头域；如果所述MAC头域中的To DS字段为“0”且From DS字段为“0”，所述处理器判断所述MAC头域的后续数据传输为DSSL传输。
本发明实施例的无线局域网中站点间直接通信的方法及使用该方法的站点将高效信令字段中的SU/MU指示信息配置为SU，将高效信令字段中的UL/DL指示信息为DL，解决了目前在WLAN系统中还没有针对站点间直接通信链路数据传输类型指示的问题。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是根据本发明的应用场景示例图。
图2是根据本发明实施例中SU帧结构图。
图3是根据本发明实施例中提到的MU下行帧的结构图。
图4是根据本发明实施例中提到的MU上行帧的结构图。
图5是本发明实施例中SU帧结构中高效信令HE-SIG-A包含的字段。
图6是本发明MAC帧结构图。
图7是本发明无线局域网中站点间直接通信的方法的流程图。
图8是本发明实施例第一站点的组成图。
图9是本发明实施例第二站点的组成图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的技术方案，可以应用于各种通信系统，例如：全球移动通讯系 统(GSM，Global System of Mobile communication)，码分多址(CDMA，Code Division Multiple Access)系统，宽带码分多址(WCDMA，Wideband Code Division Multiple Access Wireless)，通用分组无线业务(GPRS，General Packet Radio Service)，长期演进(LTE，Long Term Evolution)，无线局域网(Wireless Local Area Network，WLAN)等。
在无线局域网中的基站也被称为接入点(Access Point，AP)，无线局域网中的UE也被称为站点(Station，STA)，要实现站点间直接传输，就需要先建立站点间的邻居关系。如图1所示，如果小区0中的站点STA1和STA2想实现站点间的直接传输，那么该STA1和STA2就需要先确定周围存在哪些邻居站点，例如，对于该STA1而言，需要确立与站点STA3和STA4的邻居关系，对于STA2而言，需要确立与站点STA9和STA10的邻居关系，可选地，该STA2还可以确定与小区1中的STA5和STA11的邻居关系，这样，建立邻居关系的站点之间就可以实现站点之间的直接传输。
本发明实施例提供WLAN中的信令的指示方法，解决了目前在WLAN系统中还没有针对站点间直接通信链路(DSSL，Direct STA-to-STA Link)PPDU传输类型指示的问题。
为达到上述目的，本发明实施例提供以下方案：
实施例一
请结合参阅图7及其它附图，一种无线局域网中站点间直接通信的方法，包括：
第一站点生成包括第一高效信令的帧；
所述第一站点配置所述第一高效信令中的SU/MU指示信息为SU，和配置所述第一高效信令中的UL/DL指示信息为DL；
所述第一站点发送包括所述第一高效信令的帧(图7中的步骤S10)。
进一步地，所述第一站点生成MAC头域，所述第一站点配置所述MAC头域中的To DS字段为“0”，和所述第一站点配置所述From DS字段为“0”。
所述第一站点发送所述MAC头域。
另一方面，提供一种无线局域网中站点间直接通信的方法，包括
第二站点接收包括第一高效信令的帧(图7中的步骤S20)。所述第二站点读取所述第一高效信令的SU/MU指示信息为SU。判断所述当前接收的数据传输为SU传输。
所述第二站点读取所述第一高效信令的UL/DL指示信息为DL。判断当前数据传输为DL传输或DSSL传输。
进一步地，所述第二站点接收读取MAC头域。
所述第二站点读取所述MAC头域中的To DS字段为“0”和From DS字段为“0”，判断所述MAC头域的后续数据传输为DSSL传输。
为了进一步介绍本发明中站点发送的数据帧的结构，本发明图2示出了本发明实施例中SU帧结构图，图3及图4示出了MU下行帧及MU上行帧的结构图，图5示出了本发明实施例中SU帧结构中高效信令HE-SIG-A包含的字段，图6示出了本发明中MAC帧结构图。
在11ax系统中，有两种帧结构，一种是SU(单用户)传输的帧格式(如图2所示)，一种是多用户(MU)传输的帧结构，其中多用户传输帧结构包括下行传输帧结构和上行传输帧结构(分别如图3和4所示)。具体是SU还是MU的帧结构，是通过HE-SIG-A中的Format indication指示信息进行判断的。当Format indication指示为SU时，则判断当前传送的帧为SU的帧；当Format indication指示为MU时,可以通过HE-SIG-A的承载符号的调制方式区分有没有HE-SIG-B，例如HE-SIG-A的调制相位发生旋转，则表明当前帧包含HE-SIG-B字段，从而表明当前帧为MU下行帧，如果未发生旋转，则表明当前帧为MU上行帧。在Format indication指示为MU时,也可以用HE-SIG-A的调制相位发生旋转表示MU上行帧，HE-SIG-A的调制相位未发生旋转表示MU下行帧。当采用SU传输帧结构时，HE-SIG-A字段域结构如图3所示，包含BSS Color,TXOP duration,Format indication,BW,paylaod GI,PE,UL/DL Indication,MCS,coding,LTF Compression,DCM indication,NSTS,STBC,BF,CRC,Tail等字段。其中，BSS Color表示当前帧所相关的AP的ID信息，例如AP发送的帧中的BSS Color表示AP的ID,STA发送的帧中的BSS Color表示STA所关联的AP的ID；TXOP duration表示当前TXOP剩余的时长，Format indication表示是SU传输还是MU传输，BW表示传输带宽，payload GI表示数据传输部分采用的保护间隔(guard interval)或者循环前缀(CP)长度，PE表示包扩展长度，UL/DL Indication表示该数据帧是从STA向AP传输(UL)还是从AP向STA传输(DL)；MCS用于指示数据部分传输所使用的编码和调制策略；coding用于指示编码方式，LTF Compression表示HE-LTF部分是否压缩模式的HE-LTF，DCM indication用 于指示是否采用了双载波调制(DCM，Dual carrier modulation)，NSTS表示空时流的数目，STBC用于指示数据部分是否采用了STBC编码，BF表示数据传输是否采用了波束成型；CRC是校验比特，用于HE-SIG-A的传输校验。由于HE-SIG-A与后面的数据部分分别进行二进制卷积码编码，尾部的6比特被设为0，用于清空编码器和解码器。
站点与站点之间的直接通信，由于是单个用户之间的通信，故而采用SU的传输帧格式。由于当HE-SIG-A域中的UL/DL指示为UL时，接收端如果发现该数据包是本BSS中的STA发送的(通过数据包中携带的BSS ID信息判断)，就有可能进入休眠状态。因此站点与站点之间的直接通信的数据包中的HE-SIG-A中的UL/DL指示字段指示为DL。站点与站点之间的数据包传输具体步骤如下：
发送站点生成一个站点与站点之间直接通信的帧，其中HE-SIG-A中的SU/MU指示为SU，UL/DL指示为DL。
发送站点将所述直接通信的帧中的MAC帧头域中To DS字段为“0”，和所述第一站点配置所述From DS字段为“0”，用以指示该通信帧是站点与站点之间直接通信的帧。其中MAC帧头的结构如图6所示。
站点与站点之间直接通信的接收端接收到一个帧之后，先根据HE-SIG-A中的BSS ID信息字段判断该帧是自己所关联的BSS的AP或者STA发送的通信帧，进一步根据SU/MU指示判断是否是SU的帧结构。如果是SU的帧结构，则读取HE-SIG-A中的UL/DL字段，判断是否DL传输。
当所述通信帧是SU传输帧结构且HE-SIG-A中的UL/DL指示为DL时，所述接收端读取所述通信帧中的MAC帧头中的To DS字段和From DS字段。如果To DS字段和From DS字段都指示为0，则判定该通信帧是站点与站点直接通信的通信帧，进一步读取发送地址字段和接收地址字段，确定该通信帧是否发送给自己的，以确定是否进行后续接收处理。
实施例二
提供一种无线局域网中站点间直接通信链路数据包的指示的发送方法：
第一站点生成第一高效信令。
所述第一站点配置所述第一高效信令中的SU/MU指示信息为SU，和配置所述第一高效信令中的UL/DL指示信息为DL；
所述第一高效信令包含了DSSL指示信息，用于指示当前发送的数据传 输为DSSL传输。
第一站点生成发送所述第一高效信令
第二站点接收读取第一高效信令。
所述第二站点读取所述第一高效信令的SU/MU指示信息为SU。判断所述当前接收的数据传输为SU传输。
所述第二站点读取所述第一高效信令的UL/DL指示信息为DL。所述第二站点判断当前数据传输为DL传输或DSSL传输。
所述第二站点读取所述第一高效信令的DSSL指示信息，判断所述当前数据传输为DSSL传输。
在11ax系统中，有两种帧结构，一种是SU(单用户)传输的帧格式(如图1所示)，一种是多用户(MU)传输的帧结构(如图2所示)。具体是SU还是MU的帧结构，是通过HE-SIG-A中的SU/MU指示信息进行判断的。该SU/MU指示可以通过HE-SIG-A的承载符号的调制方式进行区分，也可以在HE-SIG-A域中采用明确的一个字段进行显式指示。当采用SU传输帧结构时，HE-SIG-A字段域中存在一个UL/DL指示字段，用于指示该数据帧是从STA向AP传输(UL)还是从AP向STA传输(DL)。
站点与站点之间的直接通信，由于是单个用户之间的通信，故而采用SU的传输帧格式。由于当HE-SIG-A域中的UL/DL指示为UL时，接收端如果发现该数据包是本BSS中的STA发送的(通过数据包中携带的BSS ID信息判断)，就有可能进入休眠状态。因此站点与站点之间的直接通信的数据包中的HE-SIG-A中的UL/DL指示字段指示为DL。同时为了对传输方向进行区分，在HE-SIG-A中采用1比特指示信息，用于指示该通信帧是否站点与站点间直接通信的帧。
站点与站点之间的数据包传输具体步骤如下：
发送站点生成一个站点与站点之间直接通信的帧，其中HE-SIG-A中的SU/MU指示为SU，UL/DL指示为DL。
发送站点将HE-SIG-A中的站点与站点间直接通信的指示设为Yes(比如1表示Yes，0表示No)。
站点与站点之间直接通信的接收端接收到一个帧之后，先根据HE-SIG-A中的BSS ID信息字段判断该帧是自己所关联的BSS的AP或者STA发送的通信帧，如果是本BSS的AP或者STA发送的通信帧，则进一 步根据HE-SIG-A中的SU/MU指示判断是否是SU的帧结构。如果是SU的帧结构，则读取HE-SIG-A中的UL/DL字段，判断是否DL传输。
当所述通信帧是SU传输帧结构且HE-SIG-A中的UL/DL指示为DL时，所述接收端读取所述通信帧中的HE-SIG-A中的站点与站点间直接通信的指示信息。如果该指示信息只是为Yes，则判定该通信帧是站点与站点直接通信的通信帧，进一步读取MAC帧头中的发送地址字段和接收地址字段，确定该通信帧是否发送给自己的，以确定是否进行后续接收处理。
实施例三
提供一种无线局域网中站点间直接通信链路数据包的指示的发送方法：
第一站点生成第一高效信令。
所述第一站点配置所述第一高效信令中的SU/MU指示信息为SU，配置所述第一高效信令中的UL/DL指示信息为DL；
所述第一站点发送所述第一高效信令。
进一步地，所述第一站点生成MAC头域：
所述第一站点配置所述MAC头域中的发送地址字段为所述第一站点MAC地址，所述第一站点配置所述MAC头域中的接收地址字段为第二站点MAC地址。
所述第一站点发送所述MAC头域。
另一方面，提供一种无线局域网中站点间直接通信链路数据包的指示的接收方法。
第二站点接收读取第一高效信令。
所述第二站点读取所述第一高效信令的SU/MU指示信息为SU。判断所述第一高效信令的后续数据传输为SU传输。
所述第二站点读取所述第一高效信令的UL/DL指示信息为DL。判断所述第一高效信令的后续数据传输为DL传输或DSSL传输。
进一步地，所述第二站点接收读取MAC头域。
所述第二站点读取所述MAC头域中的发送地址字段为所述第一站点MAC地址，所述第一站点配置所述MAC头域中的接收地址字段为所述第二站点MAC地址，判断所述MAC头域的后续数据传输为DSSL传输。
白话描述：
在11ax系统中，有两种帧结构，一种是SU(单用户)传输的帧格式(如图1所示)，一种是多用户(MU)传输的帧结构(如图2所示)。具体是SU还是MU的帧结构，是通过HE-SIG-A中的SU/MU指示信息进行判断的。该SU/MU指示可以通过HE-SIG-A的承载符号的调制方式进行区分，也可以在HE-SIG-A域中采用明确的一个字段进行显式指示。当采用SU传输帧结构时，HE-SIG-A字段域中存在一个UL/DL指示字段，用于指示该数据帧是从STA向AP传输(UL)还是从AP向STA传输(DL)。
站点与站点之间的直接通信，由于是单个用户之间的通信，故而采用SU的传输帧格式。由于当HE-SIG-A域中的UL/DL指示为UL时，接收端如果发现该数据包是本BSS中的STA发送的(通过数据包中携带的BSS ID信息判断)，就有可能进入休眠状态。因此站点与站点之间的直接通信的数据包中的HE-SIG-A中的UL/DL指示字段指示为DL。站点与站点之间的数据包传输具体步骤如下：
发送站点生成一个站点与站点之间直接通信的帧，其中HE-SIG-A中的SU/MU指示为SU，UL/DL指示为DL。
发送站点将所述直接通信的帧中的MAC帧头域中发送地址字段设为自己本身的MAC地址，和将接收地址字段设为站点与站点间直接通信的接收端的MAC地址。
站点与站点之间直接通信的接收端接收到一个帧之后，先根据HE-SIG-A中的BSS ID信息字段判断该帧是自己所关联的BSS的AP或者STA发送的通信帧，如果是本BSS的AP或者STA发送的通信帧，则进一步根据HE-SIG-A中的SU/MU指示判断是否是SU的帧结构。如果是SU的帧结构，则读取HE-SIG-A中的UL/DL字段，判断是否DL传输。
当所述通信帧是SU传输帧结构且HE-SIG-A中的UL/DL指示为DL时，所述接收端读取所述通信帧中的MAC帧头中的发送地址字段和接收地址字段。如果发送地址字段与自己的站点与站点直接通信的对端的MAC地址相同，接收地址与自己的MAC地址相同，则确定该通信帧是否发送给自己的，以确定进行后续接收处理。
实施例四：
本发明还提供了用于执行上述实施例中的方法的相关装置。
请参阅图8，第一站点100，能与其它站点进行D2D通信，其包括：
收发器110，用于发送数据帧给第二站点；所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是下行(DL)数据帧的第二指示信息；
存储器130，用于存储执行上述实施例中的方法的相关信息；
处理器120，用于执行上述实施例中的方法。
进一步地，所述数据帧还包括MAC头域；所述MAC头域中的To DS字段为“0”，所述第一站点配置所述From DS字段为“0”。
请参阅图9，第二站点200，能与其它站点进行D2D数据传输，其包括：
收发器210，用于接收第一站点发送的数据帧；所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是下行(DL)数据帧的第二指示信息；
处理器220，用于根据所述第二指示信息判断数据传输为DL传输或DSSL传输，
存储器130，用于存储执行上述实施例中的方法的相关信息。
应理解，在本发明实施例中，该处理器710可以是中央处理单元(Central Processing Unit，简称为“CPU”)，该处理器710还可以是其他通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现成可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
该存储器720可以包括只读存储器和随机存取存储器，并向处理器710提供指令和数据。存储器720的一部分还可以包括非易失性随机存取存储器。例如，存储器720还可以存储设备类型的信息。
该总线系统730除包括数据总线之外，还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见，在图中将各种总线都标为总线系统730。
实施例五：
在上述实施例中，由于D2D站点(如用户设备)若接收到有上行指示 (UPLINK)的信息，则会认定是其它站点与接入点进行上行传输，而保持休眠状态，不进行D2D传输；而将HE-SIG-A中的UL/DL指示(UP/DL indication)标识为DL，使D2D设备能够保持非休眠状态，进行正常的D2D传输。
另外，HE-SIG-A中的UL/DL指示(UP/DL indication)也可以用一个UPLINK_FLAG标识取代。
在本发明实施例五中，A STA transmitting an HE SU PPDU that is addressed to an AP shall set the TXVECTOR parameter UPLINK_FLAG to 1
如果站点发送给接入点的HE SU PPDU中的UPLINK_FLAG设为1，表示该HE SU PPDU是上行帧；
An AP transmitting an HE SU PPDU that is addressed to a non-AP STA shall set the TXVECTOR parameter UPLINK_FLAG to 0
如果站点是发送HE SU PPDU给非AP(non-AP)站点，则将HE SU PPDU中的UPLINK_FLAG设为0，则表示该HE SU PPDU是非上行帧。
在本发明实施例五中，如果UPLINK_FLAG＝1，则表示该数据帧是上行帧；如果UPLINK_FLAG＝0，则表示该数据帧是非上行帧，非上行帧可以是下行帧或D2D传输帧。
本发明实施例五揭示了一种无线局域网中站点间直接通信的方法，包括：
第一站点发送数据帧给第二站点；
所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是否为上行帧的第二指示信息。
具体地，所述第二指示信息为1时，表示所述数据帧为上行帧；所述第二指示信息为0时，表示所述数据帧为非上行帧。
请参阅图8及图9，本发明实施例五还揭示了一种站点100，能与其它站点进行D2D通信，其包括：
收发器110，用于发送数据帧给第二站点200；
所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是否为上行帧的第二指示信息。
具体地，所述第二指示信息为1时，表示所述数据帧为上行帧；所述第二指示信息为0时，表示所述数据帧为非上行帧。
实施例六：
本发明实施例五还揭示了一种无线局域网中站点间直接通信的方法，包括：
第二站点接收第一站点发送的数据帧；所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是否为上行帧的第二指示信息；
所述第二站点根据所述第二指示信息判断所述MAC头域的后续数据传输为DL传输或DSSL传输。
所述第二指示信息为1时，表示所述数据帧为上行帧；所述第二指示信息为0时，表示所述数据帧为非上行帧。
本发明实施例六还揭示了一种站点200，能与其它站点进行D2D数据传输，其包括：
收发器210，用于接收第一站点100发送的数据帧；所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是否为上行帧的第二指示信息；及
处理器220，用于根据所述第二指示信息判断数据传输是否为非上行传输，非上行传输包括DL传输或DSSL传输。
所述第二指示信息为1时，表示所述数据帧为上行帧；所述第二指示信息为0时，表示所述数据帧为非上行帧。
在实现过程中，上述方法的各步骤可以通过处理器910中的硬件的集成逻辑电路或者软件形式的指令完成。结合本发明实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器920，处理器910读取存储器920中的信息，结合其硬件完成上述方法的步骤。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各 示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (14)

  1. 一种无线局域网中站点间直接通信的方法，包括：
    第一站点发送数据帧给第二站点；
    所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是下行(DL)数据帧的第二指示信息。
  2. 根据权利要求1所述的方法，其特征在于，
    所述数据帧还包括MAC头域；所述MAC头域中的To DS字段为“0”，所述第一站点配置所述From DS字段为“0”。
  3. 一种无线局域网中站点间直接通信的方法，包括：
    第二站点接收第一站点发送的数据帧；所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是下行(DL)数据帧的第二指示信息；
    所述第二站点根据所述第二指示信息判断所述MAC头域的后续数据传输为DL传输或DSSL传输。
  4. 根据权利要求3所述的方法，其特征在于，所述第二站点接收的数据帧还包括MAC头域；如果所述MAC头域中的To DS字段为“0”且FromDS字段为“0”，所述第二站点判断所述MAC头域的后续数据传输为DSSL传输。
  5. 一种站点，能与其它站点进行D2D通信，其包括：
    收发器，用于发送数据帧给第二站点；
    所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是下行(DL)数据帧的第二指示信息。
  6. 根据权利要求5所述的站点，其特征在于，
    所述数据帧还包括MAC头域；所述MAC头域中的To DS字段为“0”，所述第一站点配置所述From DS字段为“0”。
  7. 一种站点，能与其它站点进行D2D数据传输，其包括：
    收发器，用于接收第一站点发送的数据帧；所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数 据帧的第一指示信息及用于指示所述数据帧是下行(DL)数据帧的第二指示信息；
    处理器，用于根据所述第二指示信息判断数据传输为DL传输或DSSL传输。
  8. 根据权利要求7所述的站点，其特征在于，所述数据帧还包括MAC头域；如果所述MAC头域中的To DS字段为“0”且From DS字段为“0”，所述处理器判断所述MAC头域的后续数据传输为DSSL传输。
  9. 一种无线局域网中站点间直接通信的方法，包括：
    第一站点发送数据帧给第二站点；
    所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是否为上行帧的第二指示信息。
  10. 根据权利要求9所述的方法，其特征在于，所述第二指示信息为1时，表示所述数据帧为上行帧；所述第二指示信息为0时，表示所述数据帧为非上行帧。
  11. 一种站点，能与其它站点进行D2D通信，其包括：
    收发器，用于发送数据帧给第二站点；
    所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是否为上行帧的第二指示信息。
  12. 根据权利要求11所述的站点，其特征在于，所述第二指示信息为1时，表示所述数据帧为上行帧；所述第二指示信息为0时，表示所述数据帧为非上行帧。
  13. 一种无线局域网中站点间直接通信的方法，包括：
    第二站点接收第一站点发送的数据帧；所述数据帧包括第一高效信令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是否为上行帧的第二指示信息；
    所述第二站点根据所述第二指示信息判断所述MAC头域的后续数据传输为DL传输或DSSL传输。
  14. 一种站点，能与其它站点进行D2D数据传输，其包括：
    收发器，用于接收第一站点发送的数据帧；所述数据帧包括第一高效信 令字段，所述第一高效信令字段包括用于指示所述数据帧是单用户(SU)数据帧的第一指示信息及用于指示所述数据帧是否为上行帧的第二指示信息；及
    处理器，用于根据所述第二指示信息判断数据传输为DL传输或DSSL传输。
PCT/CN2016/087459 2015-10-20 2016-06-28 无线局域网中站点间直接通信的方法及相关设备 WO2017067208A1 (zh)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109417524B (zh) * 2016-11-03 2022-06-03 英特尔公司 长训练字段大小指示
WO2018105191A1 (ja) 2016-12-07 2018-06-14 ソニー株式会社 通信装置、通信方法およびプログラム
CN109121202A (zh) * 2017-06-26 2019-01-01 华为技术有限公司 组播数据发送方法、装置、设备及存储介质
TWI692954B (zh) * 2017-10-26 2020-05-01 聯發科技股份有限公司 無線通信方法及其設備
CN109495908B (zh) * 2018-12-05 2022-03-11 国网辽宁省电力有限公司大连供电公司 一种基于lte无线与超低功耗物联网无线融合的网络优化方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140140222A1 (en) * 2012-11-16 2014-05-22 Qualcomm Incorporated Methods and apparatus for enabling cid reuse in lte based d2d communications
CN104104476A (zh) * 2013-04-07 2014-10-15 普天信息技术研究院有限公司 一种d2d的数据传输方法
CN104184549A (zh) * 2013-06-13 2014-12-03 上海朗帛通信技术有限公司 一种tdd系统d2d ue中进行通信的方法和设备

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4610803B2 (ja) * 2001-07-05 2011-01-12 株式会社日立国際電気 無線システム
US8671273B2 (en) * 2010-04-15 2014-03-11 The University Of Maryland Method of performance-aware security of unicast communication in hybrid satellite networks
GB2511214B (en) * 2011-12-09 2018-06-27 Lg Electronics Inc Method for transmitting and receiving a frame in a wireless LAN system, and apparatus for supporting the method
CN104272848B (zh) * 2012-04-30 2019-02-26 Lg 电子株式会社 用于在无线lan系统中接入信道的方法和装置
US9504089B2 (en) * 2012-05-14 2016-11-22 Broadcom Corporation System and method for wireless station bridging
US9918342B2 (en) 2013-02-15 2018-03-13 Lg Electronics Inc. Method and device for transmitting/receiving frame in accordance with bandwidth thereof in WLAN system
EP2992712A1 (en) * 2013-05-02 2016-03-09 Interdigital Patent Holdings, Inc. Method for selecting an entity based on a total link quality
GB2514169B (en) * 2013-05-16 2016-01-13 Broadcom Corp Method and apparatus for scaling coverage
CN104254062B (zh) * 2013-06-28 2018-10-19 华为技术有限公司 一种直连链路通信方法及相关设备、系统
RU2638166C1 (ru) * 2013-12-14 2017-12-12 ЭлДжи ЭЛЕКТРОНИКС ИНК. Способ и устройство для передачи данных от беспроводной локальной сети во множество станций
RU2639296C1 (ru) * 2013-12-20 2017-12-21 ЭлДжи ЭЛЕКТРОНИКС ИНК. Способ и устройство для приема и передачи кадра, содержащего идентификатор частичной ассоциации в системе беспроводной локальной сети (lan)
WO2015137591A1 (ko) * 2014-03-10 2015-09-17 엘지전자 주식회사 무선랜에서 재전송 방법 및 장치
US10278172B2 (en) * 2014-08-07 2019-04-30 Lg Electronics Inc. Method for transmitting frame in wireless communication system and device therefor
WO2016024750A1 (ko) * 2014-08-12 2016-02-18 엘지전자(주) 무선 통신 시스템에서 하향링크 다중 사용자 전송 방법 및 이를 위한 장치
CN106576020B (zh) * 2014-08-21 2020-04-24 Lg 电子株式会社 在无线通信系统中的数据传输方法以及其装置
WO2016027937A1 (ko) * 2014-08-21 2016-02-25 엘지전자 주식회사 액티브 스캐닝을 수행하는 방법 및 장치
EP3496354B1 (en) * 2014-08-21 2020-04-01 LG Electronics Inc. -1- Method for uplink transmission in wireless communication system and apparatus therefor
US10128925B2 (en) * 2014-08-22 2018-11-13 Lg Electronics Inc. Method for uplink multi-user transmission in wireless communication system and apparatus therefor
WO2016032195A1 (ko) * 2014-08-25 2016-03-03 엘지전자(주) 무선 통신 시스템의 송수신 장치 및 방법
US10334007B2 (en) * 2014-08-27 2019-06-25 Lg Electronics Inc. Data transmission method in wireless communication system, and apparatus therefor
KR20170051439A (ko) * 2014-08-31 2017-05-11 엘지전자 주식회사 무선 통신 시스템에서 스테이션이 신호를 송신하는 방법 및 장치
US10075269B2 (en) * 2014-09-12 2018-09-11 Lg Electronics Inc. Method for transmitting data in WLAN system, and device for same
KR102548620B1 (ko) * 2014-10-01 2023-06-29 엘지전자 주식회사 무선 통신 시스템에서 데이터 전송 방법 및 이를 위한 장치
KR20160045023A (ko) * 2014-10-16 2016-04-26 뉴라컴 인코포레이티드 고효율 무선랜에서 상향링크 채널 액세스 방법 및 장치
EP4274152A3 (en) * 2014-12-05 2024-02-28 LG Electronics Inc. Method for transmitting/receiving ppdu in wireless communication system and apparatus therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140140222A1 (en) * 2012-11-16 2014-05-22 Qualcomm Incorporated Methods and apparatus for enabling cid reuse in lte based d2d communications
CN104104476A (zh) * 2013-04-07 2014-10-15 普天信息技术研究院有限公司 一种d2d的数据传输方法
CN104184549A (zh) * 2013-06-13 2014-12-03 上海朗帛通信技术有限公司 一种tdd系统d2d ue中进行通信的方法和设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3355595A4 *

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