WO2024029339A1 - 通信装置、通信方法、及び、プログラム - Google Patents

通信装置、通信方法、及び、プログラム Download PDF

Info

Publication number
WO2024029339A1
WO2024029339A1 PCT/JP2023/026487 JP2023026487W WO2024029339A1 WO 2024029339 A1 WO2024029339 A1 WO 2024029339A1 JP 2023026487 W JP2023026487 W JP 2023026487W WO 2024029339 A1 WO2024029339 A1 WO 2024029339A1
Authority
WO
WIPO (PCT)
Prior art keywords
allocation
uhr
mhz
sig
subfield
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/026487
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
朝康 相馬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to CN202380056605.XA priority Critical patent/CN119654902A/zh
Priority to EP23849894.3A priority patent/EP4568339A1/en
Priority to KR1020257006106A priority patent/KR20250048272A/ko
Publication of WO2024029339A1 publication Critical patent/WO2024029339A1/ja
Priority to US19/044,346 priority patent/US20250184980A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • 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]

Definitions

  • the present invention relates to communication control technology in wireless LAN.
  • the IEEE 802.11 standard is known as a communication standard related to wireless LAN (Wireless Local Area Network). .
  • the IEEE802.11be standard which is part of the IEEE802.11 standard series and is currently under development, is considering increasing the maximum frequency bandwidth to 320MHz as one of the measures to improve throughput compared to the IEEE802.11ax standard. . Note that there are four frequency widths conventionally used in wireless LAN: 20 MHz, 40 MHz, 80 MHz, and 160 MHz.
  • Patent Document 1 discloses a mechanism for performing wireless communication with multiple terminals using OFDMA (Orthogonal frequency-division multiple access) technology for communication of the IEEE802.11 standard series.
  • OFDMA Orthogonal frequency-division multiple access
  • the present invention has been made in view of at least one of the above-mentioned problems.
  • One aspect of the present invention is to enable a communication device that is capable of communicating using a bandwidth greater than 320 MHz to communicate information regarding RU assignments using an appropriate frame structure. .
  • a communication device as one aspect of the present invention includes an L-SIG (Legacy-Signal Field) and a U-SIG (Universal-Signal Field).
  • PDU Physical Layer
  • the transmitting means When transmitting a UHR MU PPDU with a bandwidth greater than 320 MHz, the transmitting means includes an RU Allocation-1 subfield and an RU Allocation-2 subfield after the U-SIG.
  • the transmitting means transmits the RU Allocation-1 subfield after the U-SIG. and the RU Allocation-2 subfield, but not the RU Allocation-3.
  • communication devices capable of communicating using a bandwidth greater than 320 MHz are enabled to communicate information regarding RU assignments through appropriate frame configuration.
  • FIG. 1 is a diagram showing an example of a network configuration of a wireless communication system.
  • FIG. 2 is a diagram illustrating an example of a hardware configuration of a communication device. It is a figure showing an example of the PHY frame structure of UHR PPDU.
  • FIG. 3 is a diagram illustrating an example of the correspondence between RU allocation patterns and RU Allocation subfields.
  • FIG. 3 is a diagram illustrating an example of the correspondence between RU allocation patterns and RU Allocation subfields.
  • FIG. 3 is a diagram illustrating an example of an MRU allocation pattern and a combination of RUs.
  • FIG. 3 is a diagram illustrating an example of an MRU allocation pattern and a combination of RUs.
  • FIG. 2 is a diagram illustrating an example of an MRU allocation pattern and a combination of RUs.
  • FIG. 3 is a diagram illustrating an example of an MRU allocation pattern and a combination of RUs. It is a schematic diagram explaining a content channel. 3 is a flowchart illustrating an example of control of the communication device 101. FIG. It is a schematic diagram explaining a modification.
  • FIG. 1 shows an example of the configuration of a wireless communication network in the wireless communication system of the first embodiment.
  • This wireless communication network includes one access point (AP) and three stations (STA).
  • AP access point
  • STA stations
  • the AP 101 and the STAs 102 to 104 are examples of communication devices.
  • the AP 101 and STAs 102 to 104 will also be collectively referred to as communication devices 101 to 104.
  • the AP 101 and STAs 102 to 104 are compliant with IEEE 802.11be and are configured to be able to perform wireless communication compliant with standards established before the IEEE 802.11be standard.
  • IEEE is an abbreviation for Institute of Electrical and Electronics Engineers.
  • the IEEE802.11be standard is also called the EHT (Extreme High Throughput) standard based on the name of the TG (Task Group) responsible for standard formulation.
  • IEEE802.11ax which was formulated before 802.11be, is referred to as the 6th generation standard or IEEE802.11GEN6, likening it to Wi-Fi6, which is an interoperability certification program corresponding to the standard. Alternatively, it may also be simply referred to as GEN6.
  • the IEEE802.11be standard will also be referred to as the 7th generation standard, IEEE802.11GEN7, or simply GEN7, in comparison to Wi-Fi7 (tentative name), which is a corresponding certification program.
  • AP101 and STA102 to 104 are the successor standards of the IEEE802.11be standard, which targets a maximum transmission speed of 46.08Gbps, and enable wireless communication compliant with the successor standard, which targets maximum transmission speeds of 90Gbps to over 100Gbps. configured.
  • the successor standard to 802.11be will also be referred to as the 8th generation standard, IEEE802.11GEN8, or simply GEN8, in comparison to the corresponding certification program Wi-Fi8 (tentative name).
  • the successor standard is also referred to as a communication standard compatible with WI-Fi8.
  • AP STA a communication device that provides an access point function
  • AP STA a communication device that provides an access point function
  • AP STA a communication device that provides an access point function
  • AP STA a communication device that provides an access point function
  • AP STA a communication device that provides an access point function
  • AP STA a communication device that provides an access point function
  • AP STA a communication device that provides an access point function
  • AP STA or simply “AP” without a reference number unless a specific device is referred to.
  • STA station (terminal) that connects to an access point
  • STA station
  • non-AP is an abbreviation for non Access Point.
  • an access point for example, AP 101
  • AP 101 that supports the communication standard corresponding to GEN8 (Wi-Fi8)
  • UHR AP STA an access point that supports the communication standard corresponding to GEN8 (Wi-Fi8)
  • a station terminal
  • non-AP UHR STA a station that supports communication standards compatible with GEN8
  • FIG. 1 shows a wireless communication network including one AP and three STAs as an example, the number of these communication devices may be larger or smaller than shown. In one example, if STAs communicate with each other, an AP may not be present.
  • the communicable range of the network formed by the AP 102 is indicated by a circle 101. Note that this communicable range may cover a wider range or may cover only a narrower range.
  • the communication devices 101 to 104 can communicate in the 2.4 GHz band, 5 GHz band, 6 GHz band, and 7 GHz band. Additionally, communication devices 101-104 can operate at channel widths of 20 MHz, 40 MHz, 80 MHz, 160 MHz, 320 MHz, 480 MHz, and 640 MHz. However, one or more of STAs 102-104 may only be able to operate with a channel width of 320 MHz or 480 MHz or less.
  • the communication devices 101 to 104 can perform MU (Multi-User) communication using Orthogonal Frequency Division Multiple Access (OFDMA) technology. Furthermore, the communication devices 101 to 104 can perform MU communication using Multi-User Multi-Input Multi-Output (MU-MIMO) technology. Note that it is also possible to perform MU communication using both OFDMA technology and MU-MIMO technology.
  • MU Multi-User
  • OFDMA Orthogonal Frequency Division Multiple Access
  • MU-MIMO Multi-User Multi-Input Multi-Output
  • the AP 101 and multiple STAs among the STAs 102 to 104 can communicate simultaneously through one channel (including channels with a combined channel width of 40 MHz or more).
  • one channel is divided into a plurality of subchannels called resource units (RUs), and each RU is assigned to a different STA (which may be a group of STA consisting of a plurality of STAs).
  • RUs resource units
  • MU-MIMO is a spatial multiplexing method in which multiple antennas are used to form multiple spatial streams, and each spatial stream is assigned to a different STAs, so that an AP and multiple STAs communicate simultaneously through one channel.
  • the communication devices 101 to 104 are compatible with the IEEE802.11be standard (Wi-Fi7 standard) and the successor standard GEN8 standard, but in addition to this, they are also compatible with the IEEE802.11 standard before the IEEE802.11be standard. You may do so.
  • the communication devices 101 to 104 may comply with at least one of the IEEE802.11a/b/g/n/ac/ax/standards.
  • the AP 101 include, but are not limited to, a wireless LAN router and a personal computer (PC). Further, the AP 101 may be an information processing device such as a wireless chip that can perform wireless frame communication compatible with UHR.
  • STAs 102 to 104 include, but are not limited to, cameras, tablets, smartphones, PCs, mobile phones, video cameras, headsets, smart glasses, etc. Furthermore, the STAs 102 to 104 may be information processing devices such as wireless chips capable of performing wireless frame communication compatible with UHR.
  • the wireless network in FIG. 1 is composed of one AP and three STAs, the number of APs and STAs is not limited to this. For example, there may be one more STA. At this time, the channel and channel width of the link to be established do not matter.
  • FIG. 2 is a diagram illustrating an example of the hardware configuration of a communication device (AP and STA).
  • the communication device includes a storage section 201, a control section 202, a functional section 203, an input section 204, an output section 205, a communication section 206, and an antenna 207, as an example of its hardware configuration. Note that there may be a plurality of antennas.
  • the storage unit 201 is composed of one or more memories such as ROM and RAM, and stores computer programs for performing various operations described below and various information such as communication parameters for wireless communication.
  • ROM is an abbreviation for Read Only Memory
  • RAM is an abbreviation for Random Access Memory.
  • the storage unit 201 in addition to memories such as ROM and RAM, a storage medium such as a hard disk, nonvolatile memory, and storage may be used. Further, the storage unit 201 may include a plurality of memories or the like.
  • the control unit 202 is configured by one or more processors such as a CPU or MPU, and controls the entire communication device by executing a computer program stored in the storage unit 201.
  • control unit 202 may control the entire communication device through cooperation between a computer program stored in the storage unit 201 and an OS (Operating System). In this way, the storage section 201 and the control section 202 constitute a so-called computer. Further, the control unit 202 generates data and signals (wireless frames) to be transmitted in communication with other communication devices.
  • CPU is an abbreviation for Central Processing Unit
  • MPU is an abbreviation for Micro Processing Unit.
  • the control unit 202 may include a plurality of processors such as multi-core processors, and the plurality of processors may cooperate to control the entire AP 101. It is also possible to configure a part of the processing to be performed by an ASIC (Application Specific Integrated Circuit), a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), or the like.
  • ASIC Application Specific Integrated Circuit
  • DSP Digital Signal Processor
  • FPGA Field Programmable Gate Array
  • control unit 202 controls the functional unit 203 to execute predetermined processing such as wireless communication, imaging, printing, and projection.
  • the functional unit 203 is hardware for the communication device to execute predetermined processing.
  • the functional unit 203 is an imaging unit, and performs imaging processing of surrounding images via a camera unit (not shown) included in the communication device.
  • the functional unit 203 is a printing unit and performs printing processing on a sheet such as paper.
  • the functional unit 203 is a projection unit and performs a process of projecting images and videos onto a projection surface.
  • the projection surface is, for example, the end user's retina.
  • the data processed by the functional unit 203 may be data stored in the storage unit 201, or may be data communicated with other APs or STAs via the communication unit 206, which will be described later.
  • the communication device such as the AP 101 can also provide a network storage function such as NAS (Network Attached Storage). This function is provided to other communication devices as a web service such as a network storage service.
  • NAS Network Attached Storage
  • This function is provided to other communication devices as a web service such as a network storage service.
  • other communication devices can connect to a network storage service provided by the AP 101 or the like using protocols such as SMB, FTP, or WebDAV, and upload files to or download files from the storage. do.
  • the upload and download communications are also realized by communicating UHR compatible wireless frames between the devices.
  • the input unit 204 accepts various operations from the user.
  • the output unit 205 performs various outputs to the user via a monitor screen and speakers.
  • the output by the output unit 205 may be a display on a monitor screen, an audio output from a speaker, a vibration output, or the like.
  • both the input section 204 and the output section 205 may be implemented in one module.
  • the input section 204 and the output section 205 may be integrated with the communication device, or may be separate bodies.
  • the communication unit 206 controls communication regarding wireless frames compatible with UHR. Furthermore, in addition to wireless frames compatible with UHR, the communication unit 206 can also control communications related to wireless frames compatible with other IEEE802.11 series standards, and wired communications such as wired LAN. The communication unit 206 controls the antenna 207 to transmit and receive signals such as radio frames for wireless communication generated by the control unit 202.
  • the communication unit 206 is configured to control wireless communication compatible with these communication standards. be able to. Further, in a case where the communication device can perform wireless communication compatible with the plurality of communication standards mentioned above, a configuration may be adopted in which the communication device and antenna are individually provided in accordance with the respective communication standards.
  • the communication device communicates data such as image data, document data, video data, etc. with other communication devices via the communication unit 206.
  • the antenna 207 may be configured separately from the communication unit 206, or may be configured together with the communication unit 206 as one module.
  • the antenna 207 is an antenna capable of communication in the 2.4 GHz band, 5 GHz band, 6 GHz band, and 7 GHz band.
  • the AP 101 may have one or more antennas. Further, different antennas may be provided for each frequency band. Further, when the AP 101 has a plurality of antennas, the AP 101 may have a communication unit 206 corresponding to each antenna. In this embodiment, it is assumed that at least the AP 101 and any one STA have a set of two or more antennas for performing MIMO (Multi-Input and Multi-Output) transmission and reception. Further, in FIG. 2, one antenna 207 is shown, but for example, two or more antennas (two or more sets) that can each correspond to different frequency bands may be included.
  • MIMO Multi-Input and Multi-Output
  • FIG. 3 shows an example of a UHR MU (Multi User) PPDU for multi-user communication transmitted by the communication device 101.
  • PPDU is an abbreviation for Physical Layer (PHY) Protocol Data Unit.
  • a radio frame called UHR MU PPDU is a PPDU used when a communication device performs MU communication (multi-user communication).
  • This frame is composed of L-STF 301, L-LTF 302, L-SIG 303, RL-SIG 304, U-SIG 305, UHR-SIG 306, UHR-STF 307, and UHR-LTF 308 from the beginning. Further, the data 309 and Packet Extension 310 are configured to follow the UHR-LTF 308.
  • STF stands for Short Training Field
  • LTF stands for Long Training Field
  • SIG stands for Signal.
  • L- is an abbreviation of Legacy
  • L-SIG is an abbreviation of Legacy-Signal Field.
  • L-STF is an abbreviation for Legacy Short Training Field.
  • L-SIG is also called Non-HT Signal field.
  • L-STF is also called Non-HT STF.
  • L-LTF is also called Non-HT LTF.
  • RL-SIG is an abbreviation for Repeated Legacy Signal.
  • RL-SIG is also called Repeated Non-HT Signal.
  • HT is an abbreviation for High Throughput.
  • the beginning of the PPDU contains L-STF301, L-LTF302, and L-SIG303 to ensure backward compatibility with the IEEE802.11a/b/g/n/ax standard. is included.
  • L-LTF is placed immediately after L-STF
  • L-SIG is placed immediately after L-LTF.
  • an RL-SIG (Repeated L-SIG, RL-SIG) 304 is placed immediately after the L-SIG.
  • the contents of the L-SIG are repeatedly transmitted.
  • RL-SIG allows the recipient to recognize that the PPDU is compliant with the IEEE802.11ax standard or later standards.
  • the L-STF 301 is used for PHY frame signal detection, automatic gain control (AGC), timing detection, and the like.
  • L-LTF is used for highly accurate synchronization of frequency and time, acquisition of channel state information (CSI), and the like.
  • L-SIG is used to transmit control information including information on data transmission rate and PHY frame length.
  • the PPDU further includes a U-SIG 305 placed immediately after the RL-SIG 304.
  • U-SIG Universal-Signal Field
  • U-SIG is a field for transmitting control information of each standard, which is scheduled to be commonly used in standards after IEEE802.11be (GEN7).
  • U-SIG includes a BandWidth subfield that indicates the bandwidth in which the PPDU is transmitted, and UHR-SIG MCS that indicates the MCS of UHR-SIG.
  • U-SIG includes control information such as a Number Of UHR-SIG Symbols subfield indicating the number of UHR-SIG symbols.
  • the BandWidth subfield is composed of, for example, 3 bits.
  • the communication device 101 stores a value corresponding to the bandwidth for transmitting the PPDU in the subfield.
  • any one of the values corresponding to 20Mhz, 40Mhz, 80Mhz, 160Mhz, 320Mhz-1, 320Mhz-2, 480Mhz, and 640Mhz is stored.
  • the subfield is composed of 4 or more bits.
  • UHR-SIG Ultra High Reliability Signal Field
  • the UHR-SIG includes control information that cannot fit into the U-SIG and control information that should be notified to each user when performing multi-user transmission.
  • This UHR-SIG 406 is modulated with the MCS specified in the UHR-SIG MCS field within U-SIG.
  • a UHR-STF 306, which is an STF for UHR, and a UHR-LTF 607, which is an LTF for UHR are arranged.
  • UHR-LTF is information used for MIMO estimation, beamforming estimation, etc.
  • a plurality of UHR-LTFs can be arranged based on the number of MIMO antennas and the necessity of beamforming.
  • the UHR-SIG 306, UHR-STF 307, and UHR-LTF 308 that make up the PPDU are fields that can be decoded by a communication device that is capable of transmitting and receiving wireless frames that support UHR.
  • L-STF 301, L-LTF 302, L-SIG 303, RL-SIG 304, U-SIG 305, UHR-SIG 306, UHR-STF 307, and UHR-LTF 308 are also collectively referred to as a PHY preamble.
  • the UHR-SIG 306 which is closely related to multi-user transmission, will be described in more detail.
  • the UHR-SIG 306 is composed of two fields: a common field and a user field.
  • the user field contains control information for each user.
  • the common field is composed of subfields shown in Table 1 below.
  • the common field includes a U-SIG Overflow subfield and multiple RU Allocation subfields.
  • the U-SIG Overflow subfield stores control information that cannot be stored in the U-SIG commonly used after 802.11be.
  • the RU Allocation subfield includes two subfields, an RU Allocation-1 subfield and an RU Allocation-2 subfield, depending on the bandwidth used for communication.
  • the RU Allocation-1 subfield is a field consisting of N ⁇ 9 bits.
  • RU Allocation-2 is a field consisting of M ⁇ 9 bits. Both fields are fields that indicate information regarding RU allocation.
  • Whether or not the RU Allocation-2 subfield is arranged and the size of each RU Allocation are variable depending on the bandwidth at which the communication device 101 transmits the UHR MU PPDU.
  • the 9-bit field indicates RU allocation in a 20 MHz bandwidth.
  • the size of 9 bits is an example of the predetermined bit size required to represent an RU allocation in a 20 Mhz bandwidth. These 9 bits are also called a predetermined number of bits. Although the predetermined number of bits is 9 bits in this embodiment, it is not limited to this.
  • the values N and M multiplied by the predetermined number of bits are determined based on the transmission bandwidth of the UHR MU PPDU to be transmitted. Since 9 bits indicate RU allocation of 20Mhz bandwidth, the values of N and M increase as the transmission bandwidth increases.
  • the sizes of RU Allocation-1 and RU Allocation-02 are made variable by changing the values of N and M, and the RU allocation when using a bandwidth of 20 MHz or more is made using the concept of content channel, which will be described later. Notify the other device.
  • radio frames compatible with UHR are transmitted with a maximum bandwidth of 640 MHz. If the bandwidth is 160 MHz or more, the RU Allocation-2 subfield is also used to indicate RU allocation.
  • N and M are values determined by the bandwidth used, and the values corresponding to the bandwidth used for data communication are entered.
  • the correspondence between N and M and each bandwidth (20 MHz band, 40 MHz band, 80 MHz band, 160 MHz band, 320 MHz band, 480 MHz band, and 640 MHz band) is as shown in Table 1.
  • the minimum number of subcarriers constituting an RU is 26, and in the 20 MHz band, it can be divided into, for example, nine RUs each consisting of 26 subcarriers.
  • the bit string of RU Allocation is 000000000, it indicates that the 20 MHz band is divided and allocated to 9 RUs with 26 subcarriers per RU.
  • the bit string of RU Allocation is 000000001, it indicates that the 20 MHz band is divided and allocated into 7 RUs with 26 subcarriers per RU and 1 RU with 52 subcarriers per RU.
  • the bit string of RU Allocation indicates the number of multiplexed STAs. For example, in the case where y2y1y0 is written, y0, y1, and y2 are each 0 or 1, indicating that 2 ⁇ 2 ⁇ y2+2 ⁇ 1 ⁇ y1+y0+1 STAs are multiplexed in the assigned RU. Furthermore, when expressed using an MRU (Multiple Resource Unit) in which a plurality of RUs are grouped, the combination of RUs of the MRU index in that MRU type is followed. Figures 6 to 9 show examples of combinations of MRU indexes and RUs for each MRU type.
  • MRU Multiple Resource Unit
  • a new RU Allocation, an MRU type, an MRU index, and a combination of RUs corresponding to the MRU index are expressed on the premise that a band up to 640 MHz is used.
  • the MRU index is determined based on the value of the RU Allocation field and the value included in the user field of the trigger frame that instructs uplink communication. Ru.
  • the MRU index is determined based on the value of the RU Allocation field of the UHR MU PPDU and the value included in the user field of the UHR-SIG.
  • the communication device 101 determines whether to transmit the UHR MU PPDU based on the amount of data to be communicated with other communication devices, the ability of the other communication devices with which to communicate, the number of communication devices with which to communicate, etc.
  • the communication device 101 executes the process shown in the flowchart of FIG. 11.
  • Each process shown in the flowchart of FIG. 11 is executed by the processor of the control unit 202 executing a computer program stored in the storage unit 201. Note that some processing such as transmission and modulation is realized by the processor of the control unit 202, the communication unit 206, the ASIC, DSP, FPGA, etc. of the control unit 202 in cooperation.
  • step S1101 the control unit 202 of the communication device determines the transmission bandwidth for transmitting the UHR MU PPDU based on the amount of data to be communicated with other communication devices, the capability of the other communication devices with which to communicate, the number of communication devices with which to communicate, etc. Determine.
  • the control unit 202 of the communication device advances the process to S1102.
  • the control unit 202 of the communication device works with the communication unit 206 to generate a UHR MU PPDU including an RU Allocation subfield corresponding to the transmission bandwidth, and transmits it to the outside via the antenna.
  • the communication device 101 determines how large an RU to allocate to another communication device in the transmission bandwidth determined in S1101. The determination is made so that the combinations can be expressed by the indexes shown in FIGS. 4-9.
  • the communication device 101 refers to the indexes shown in FIGS. 4 to 9 and configures one or more RU Allocation subfields so that the index corresponds to the combination of RUs allocated to each communication device. Through this process, information regarding RU allocation that supports a bandwidth of up to 640 MHz can be stored in the RU Allocation subfield.
  • the communication device 101 appropriately configures other values of UHR-SIG based on communication conditions, communication settings, etc., and generates UHR-SIG. Furthermore, the communication device 101 appropriately configures U-SIG, L-SIG, and other fields based on communication conditions, communication settings, etc., generates a UHR MU PPDU, and determines the generated UHR MU PPDU in S1001. Transmit using the specified transmission bandwidth. At this time, it is assumed that the communication device 101 includes data (MAC frame) multiplexed in the frequency domain and addressed to other communication devices in the data field of the UHR MU PPDU.
  • data MAC frame
  • reception control will be explained. An example will be described in which the communication device 101 (AP 101) transmits a UHR MU PPDU with a transmission bandwidth of 20 MHz including data addressed to the STAs 102 to 104.
  • the STAs 102 to 104 decode the U-SIG 305 field and the UHR-SIG 306 field included in the UHR MU PPDU received from the AP 101. Since the UHR MU PPDU taken as an example has a bandwidth of 20 MHz, the RU Allocation-1 subfield in the common field is composed of 9 bits.
  • the STAs 102 to 104 interpret data from the AP 101 according to the RU allocation indicated by the RU Allocation-1 subfield and the control information addressed to each STA contained in the user field. If the data includes data indicating a trigger frame for uplink transmission, each STA communicates after a SIFS (Short Interframe Space) time has elapsed since receiving the trigger frame. Specifically, each STA transmits to the AP 101 a radio frame called UHR TB PPDU that stores data in the frequency region corresponding to the RU allocated by the trigger frame.
  • TB PPDU is an abbreviation for Trigger Based PPDU.
  • UHR-SIG content channel When using a bandwidth larger than 20 Mhz, a mechanism named content channel is used to notify the communication partner of the RU allocation status by communicating UHR-SIG with different contents.
  • FIG. 10 shows an example of the configuration of a content channel when communicating using a 640 MHz band as a transmission bandwidth.
  • the RU Allocation subfield indicates allocation of an RU with 242 subcarriers per 9 bits. Further, the 20 MHz subband corresponds to an RU with 242 subcarriers. In other words, the RU Allocation subfield indicates the RU allocation in the 20 MHz subband per 9 bits.
  • the AP 101 When communicating using the 640 MHz band, the AP 101 divides the band into 20 MHz subbands and allocates RUs for each subband. Note that although the 640 MHz band can be divided into 32 20 MHz subbands, one UHR-SIG field does not include the RU allocations of all subbands. As shown in FIG. 10, the AP 101 stores the first UHR-SIG field having information on RU allocation for odd-numbered subbands and information on RU allocation for even-numbered subbands in order from the lowest frequency. and transmit the second UHR-SIG fields respectively.
  • the AP 101 selects each of the 1st, 3rd, 5th, 7th, 9th, 11th, 13th, 15th, 17th, 19th, 21st, 23rd, 25th, 27th, 29th, and 31st sub-channels for every 9 bits in the odd-numbered subchannels.
  • a first UHR-SIG indicating the RU assignment of the band will be communicated.
  • a second UHR-SIG field that indicates the RU assignment for the even-numbered 20 MHz subband is communicated.
  • the AP 101 selects each of the 2nd, 4th, 6th, 8th, 10th, 12th, 14th, 16th, 18th, 20th, 22nd, 24th, 26th, 28th, 30th, and 33rd sub-channels for every 9 bits in the even-numbered subchannels.
  • a second UHR-SIG indicating the RU allocation for the band will be communicated.
  • the first UHR-SIG field transmitted using odd subbands functions as a first channel for distributing information content indicating the allocation status of the first RU. Furthermore, the first UHR-SIG field transmitted using even subbands functions as a second channel for distributing information content indicating the allocation status of the second RU.
  • the STA can appropriately interpret the first UHR-SIG field and the second UHR-SIG field transmitted on each channel and obtain information on RU allocation for 640 MHz.
  • the AP 101 transmits the first and second UHR-SIG fields including the 144-bit RU allocation-1 and 2 subfields to the STAs 102 to 104. . With this total of 288 bits of information, it becomes possible to notify information regarding the allocation of RUs with a width of 640 MHz. Note that depending on the UHR-SIG modulation method and coding rate, the RU Allocation-2 subfield may be divided into a plurality of different symbols and transmitted.
  • the first UHR-1 includes an RU Allocation-1 subfield representing the RU allocation status in the subband in the lower frequency subband that makes up the 40Mhz width.
  • Send SIG This subfield consists of 9 bits.
  • the even-numbered subband that is, the second subband, which has a higher frequency constituting the 40Mhz width, contains an RU Allocation-1 subfield that indicates the RU allocation status in the subband. 2 UHR-SIG is transmitted. This subfield also consists of 9 bits.
  • the UHR-SIG-B field has information on RU allocation for odd-numbered subbands and information on RU allocation for even-numbered subbands. generate and transmit UHR-SIG-B fields respectively.
  • the AP 101 generates and transmits a UHR MU PPDU including the RU Allocation-1 subfield or both the RU Allocation-1 and RU Allocation-2 subfields based on the transmission bandwidth. This process makes it possible to notify the STAs 102 to 104 of information regarding RU allocation.
  • the STAs 102-104 also receive and interpret UHR MU PPDUs that include an RU Allocation-1 subfield or both RU Allocation-1 and RU Allocation-2 subfields. This process allows each STA to obtain information regarding RU allocation.
  • each RU Allocation subfield of UHR-SIG is a field included in the UHR MU PPDU, and is not included in other types of PPDUs.
  • the RU Allocation subfield is not included in the UHR ER (Extended Range) SU PPDU communicated when performing single user communication with extended communication range.
  • the above-mentioned UHR TB PPDU also does not include the RU Allocation subfield.
  • the RU allocation method indicated by the bit string of the RU Allocation subfield shown in this embodiment is only an example.
  • the RU allocation method indicated by the bit string of the RU Allocation subfield may be partially different from this embodiment.
  • ⁇ Second embodiment> In the first embodiment, a case was illustrated in which information regarding RU allocation is stored in RU Allocation-1 and RU Allocation-2 in the UHR-SIG of the preamble and notified.
  • the second embodiment in order to facilitate interoperability with 802.11be, a configuration will be described in which RU Allocation-3 is utilized and information regarding RU allocation is notified in a preamble.
  • Table 2 shows an example of a common field including three RU Allocation subfields in the second embodiment.
  • the common field includes an RU Allocation-1 subfield, an RU Allocation-2 subfield, and an RU Allocation-3 subfield.
  • This field consists of N ⁇ 9, M ⁇ 9, and L ⁇ 9 bits, respectively, and indicates information regarding RU allocation.
  • the correspondence between N, M, and L and each bandwidth (20 MHz band, 40 MHz band, 80 MHz band, 160 MHz band, 320 MHz band, 480 MHz band, and 640 MHz band) is as shown in Table 2.
  • This embodiment differs from the first embodiment in that the sizes of the RU Allocation-1 subfield and the RU Allocation-2 subfield are the same as those of IEEE802.11be, which is the communication standard one generation ago.
  • RU allocation is expressed using only RU Allocation-1, as in the first embodiment. If the bandwidth of the UHR MU PPDU transmitted by the communication device 101 is 160 MHz or more and 320 MHz or less, RU allocation is expressed using RU Allocation-1 and RU Allocation-2.
  • RU allocation is expressed using RU Allocation-1, RU Allocation-2, and RU Allocation-3.
  • the mechanism for notifying RU allocation information for 640Mhz using the first UHR-SIG and the second UHR-SIG explained in FIG. This may be done in the same manner as in the embodiment.
  • the RU Allocation-3 subfield may be divided into two symbols and transmitted. Furthermore, when the RU Allocation-3 subfield is divided into two symbols and transmitted, the subfields can have different names. In this case, for example, the communication device 101 generates, as the first symbol, a symbol that includes an RU Allocation-3 subfield that can store information of 54 bits (9 bits x 6) at maximum. Furthermore, the communication device 101 generates a second symbol including an RU Alliance-4 subfield that can store information of 54 bits (9 bits x 6) at maximum.
  • multiplexing is performed in the frequency domain by transmitting the first UHR-SIG on odd subchannels and the second UHR-SIG on even subchannels.
  • Information regarding the assignment was communicated.
  • information regarding RU allocation is notified using four different channels, thereby making it possible to notify RU allocation information for 640 MHz without increasing the RU Allocation subfield.
  • the structure of the RU Allocation field is the same as RU Allocation-1 and RU Allocation-2 in the second embodiment. In other words, the structure of the RU Allocation field similar to 802.11be is adopted.
  • FIG. 12 is a schematic diagram illustrating another embodiment for notifying information regarding allocation of 640 MHz RUs in a preamble.
  • the communication device 101 uses a first subchannel that indicates the allocation of RUs of the 1st, 5th, 9th, 13th, 17th, 21st, 25th, and 29th 20MHz subbands in the first subchannel constituting a 640MHz width.
  • Communicate SIG field communicate SIG field.
  • the communication device 101 transmits a third UHR signal indicating the allocation of RUs of the 3rd, 7th, 11th, 15th, 19th, 23rd, 27th, and 31st 20MHz subbands in the third subchannel constituting the 640MHz width. Communicate SIG field. Then, the communication device 101 transmits a fourth UHR signal indicating RU allocation of the 4th, 8th, 12th, 16th, 20th, 24th, 28th, and 32nd 20MHz subbands in the fourth subchannel constituting the 640MHz width. Communicate SIG field. Then, by repeatedly transmitting the four content channels shown in 1201 in FIG. 12 every four channels thereafter, it is possible to notify the RU allocation for 640 Mhz. In this way, by increasing the number of content channels, it becomes possible to notify the allocation of RUs with a bandwidth larger than 320 MHz.
  • each UHR-SIG stores RU allocation information for a maximum of eight 20Mhz subchannels (160Mhz width RU allocation information).
  • the AP 101 is an AP within the network, but it may be a device that also operates as an STA.
  • the device may have both the ability as a UHR AP STA and the ability as a UHR Non-AP STA.
  • the AP 101 performs data communication with another communication device that is the frame transmission source using the RU indicated by the RU Allocation subfield included in the UHR-SIG of the received UHR MU PPDU.
  • the PHY frame of the UHR MU PPDU includes a legacy field that can be decoded by a communication device that supports the IEEE 802.11 series standard before the IEEE 802.11be standard, but the present invention is not limited to this.
  • the PHY frame of the UHR MU PPDU may be configured not to include L-STF, L-LTF, L-SIG, and RL-SIG.
  • the PHY frame of the UHR MU PPDU is composed of UHR-STF, UHR-LTF, U-SIG, UHR-SIG, UHR-LTF, data field, and Packet Extension from the beginning.
  • each field, bit position, and number of bits used in this embodiment are not limited to those described in this embodiment. It may also be stored.
  • the present invention can be implemented as, for example, a system, an apparatus, a method, a program, or a recording medium (storage medium). Specifically, it may be applied to a system consisting of multiple devices (for example, a host computer, an interface device, an imaging device, a web application, etc.), or it may be applied to a device consisting of a single device. good.
  • a system consisting of multiple devices (for example, a host computer, an interface device, an imaging device, a web application, etc.), or it may be applied to a device consisting of a single device. good.
  • the present invention provides a system or device with a program that implements one or more functions of the embodiments described above via a network or a storage medium, and one or more processors in a computer of the system or device reads and executes the program. This can also be achieved by processing. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.
  • a circuit for example, ASIC
  • the present invention provides a system or device with a program that implements one or more functions of the embodiments described above via a network or a storage medium, and one or more processors in a computer of the system or device reads and executes the program. This can also be achieved by processing. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.
  • a circuit for example, ASIC

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
PCT/JP2023/026487 2022-08-05 2023-07-20 通信装置、通信方法、及び、プログラム Ceased WO2024029339A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN202380056605.XA CN119654902A (zh) 2022-08-05 2023-07-20 通信装置、通信方法及程序
EP23849894.3A EP4568339A1 (en) 2022-08-05 2023-07-20 Communication device, communication method, and program
KR1020257006106A KR20250048272A (ko) 2022-08-05 2023-07-20 통신 장치, 통신 방법, 및 프로그램
US19/044,346 US20250184980A1 (en) 2022-08-05 2025-02-03 Communication apparatus, communication method, and storage medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022125626A JP2024022211A (ja) 2022-08-05 2022-08-05 通信装置、通信方法、及び、プログラム
JP2022-125626 2022-08-05

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US19/044,346 Continuation US20250184980A1 (en) 2022-08-05 2025-02-03 Communication apparatus, communication method, and storage medium

Publications (1)

Publication Number Publication Date
WO2024029339A1 true WO2024029339A1 (ja) 2024-02-08

Family

ID=89848866

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/026487 Ceased WO2024029339A1 (ja) 2022-08-05 2023-07-20 通信装置、通信方法、及び、プログラム

Country Status (7)

Country Link
US (1) US20250184980A1 (enExample)
EP (1) EP4568339A1 (enExample)
JP (1) JP2024022211A (enExample)
KR (1) KR20250048272A (enExample)
CN (1) CN119654902A (enExample)
TW (1) TW202408267A (enExample)
WO (1) WO2024029339A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025169685A1 (ja) * 2024-02-09 2025-08-14 キヤノン株式会社 通信装置、通信方法、及びプログラム

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20250351128A1 (en) * 2024-05-08 2025-11-13 Qualcomm Incorporated Dynamic sub-band operation assistance information

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018050133A (ja) 2016-09-20 2018-03-29 キヤノン株式会社 通信装置、制御方法、及びプログラム
JP2021532660A (ja) * 2018-07-25 2021-11-25 ホアウェイ・テクノロジーズ・カンパニー・リミテッド リソースユニット指示方法、装置、および記憶媒体
WO2022020682A1 (en) * 2020-07-23 2022-01-27 Qualcomm Incorporated Enhanced trigger frame
JP2022125626A (ja) 2021-02-17 2022-08-29 森村Ｓｏｆｃテクノロジー株式会社 電気化学反応単セルおよび電気化学反応セルスタック

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018050133A (ja) 2016-09-20 2018-03-29 キヤノン株式会社 通信装置、制御方法、及びプログラム
JP2021532660A (ja) * 2018-07-25 2021-11-25 ホアウェイ・テクノロジーズ・カンパニー・リミテッド リソースユニット指示方法、装置、および記憶媒体
WO2022020682A1 (en) * 2020-07-23 2022-01-27 Qualcomm Incorporated Enhanced trigger frame
JP2022125626A (ja) 2021-02-17 2022-08-29 森村Ｓｏｆｃテクノロジー株式会社 電気化学反応単セルおよび電気化学反応セルスタック

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025169685A1 (ja) * 2024-02-09 2025-08-14 キヤノン株式会社 通信装置、通信方法、及びプログラム

Also Published As

Publication number Publication date
CN119654902A (zh) 2025-03-18
TW202408267A (zh) 2024-02-16
US20250184980A1 (en) 2025-06-05
KR20250048272A (ko) 2025-04-08
EP4568339A1 (en) 2025-06-11
JP2024022211A (ja) 2024-02-16

Similar Documents

Publication Publication Date Title
KR101621103B1 (ko) 무선랜 시스템에서 전송 채널 할당 방법 및 장치
KR20220143846A (ko) 무선 통신 시스템에서 데이터를 송수신하기 위한 방법 및 무선 통신 단말
TW202147800A (zh) 在無線區域網路（ｗｌａｎ）中的多代通訊
TW202207657A (zh) 使用分散式音調的無線傳輸
CN107113829B (zh) 在wlan中根据资源分配设置来分配无线资源的方法和设备
KR102745819B1 (ko) 무선 통신 시스템에서 a-ppdu에 대한 트리거 프레임을 설정하는 방법 및 장치
WO2022166240A1 (zh) 一种通信方法及装置
KR20240025649A (ko) Wlan 시스템에서의 향상된 서브채널 선택적 송신의 인에이블링
JP7379100B2 (ja) 通信装置、通信方法、およびプログラム
US20250184980A1 (en) Communication apparatus, communication method, and storage medium
CN115706655B (zh) 无线局域网中的设备及由其执行的方法
WO2021090732A1 (ja) 通信装置、制御方法、およびプログラム
KR20220170780A (ko) 무선 통신 시스템에서 사운딩 프로토콜 시퀀스에서 a-ppdu 전송을 지원하는 방법 및 장치
JP2023534601A (ja) リソースユニット割当シグナリングのための通信装置および通信方法
CN116134738A (zh) 用于基于多接入点的空数据分组反馈报告的通信装置和通信方法
US20240372681A1 (en) Communication apparatus, information processing apparatus, control method, and medium
EP4516023A1 (en) Communication apparatus and communication method for feedback response transmission in indicated frequency domain
JP2020141326A (ja) 通信装置、情報処理装置、制御方法、およびプログラム
WO2024004588A1 (ja) 通信装置、制御方法、およびプログラム
JP2024038920A (ja) 通信システム、通信装置、通信装置の制御方法及びプログラム
JP2018524901A (ja) ワイヤレスネットワークシステムにおけるｏｆｄｍａベースのデータａｃｋ／ｂａフレーム交換の改善されたシグナリング方法
WO2025086985A1 (zh) 一种物理协议数据单元发送方法和装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23849894

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202380056605.X

Country of ref document: CN

ENP Entry into the national phase

Ref document number: 20257006106

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 202547018535

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 2023849894

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2023849894

Country of ref document: EP

Effective date: 20250305

WWP Wipo information: published in national office

Ref document number: 202547018535

Country of ref document: IN

WWP Wipo information: published in national office

Ref document number: 202380056605.X

Country of ref document: CN

WWP Wipo information: published in national office

Ref document number: 1020257006106

Country of ref document: KR

WWP Wipo information: published in national office

Ref document number: 2023849894

Country of ref document: EP