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JP-7855585-B2 - Access point and communication method

JP7855585B2JP 7855585 B2JP7855585 B2JP 7855585B2JP-7855585-B2

Inventors

  • 岩井 敬
  • 高田 智史
  • 浦部 嘉夫
  • 中野 隆之

Assignees

  • パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ

Dates

Publication Date
20260508
Application Date
20220315
Priority Date
20210616

Claims (12)

  1. It is an access point, A control circuit that generates a control signal for allocating at least a portion of the transmission time acquired by the access point to uplink transmissions of multiple terminals, A transmitting circuit that transmits the aforementioned control signal during the transmission opportunity acquired by the access point , An access point equipped with the following features.
  2. The aforementioned plurality of terminals include terminals that perform terminal-to-terminal communication. The access point according to claim 1.
  3. The control circuit sets information instructing the multiple terminals to share the transmission opportunity in a common information field common to the terminals in the control signal. The access point according to claim 1.
  4. When the control circuit sets information instructing the sharing of the transmission opportunity, it sets individual user information fields for the multiple terminals in the control signal. The access point according to claim 3.
  5. The control circuit sets information in the terminal-specific user information field of the control signal indicating whether the communication during at least a portion of the transmission opportunity is communication between the access point and the terminal, or communication between terminals. The access point according to claim 1.
  6. The control circuit sets information regarding the duration of the uplink transmission signal during at least a portion of the transmission opportunity in a common information field common to the terminals in the control signal. The access point according to claim 1.
  7. The control circuit associates the transmission order of the plurality of terminals for at least a portion of the transmission opportunity with the arrangement order of individual user information fields for the plurality of terminals in the control signal. The access point according to claim 1.
  8. The control circuit sets information in the control signal that indicates the duration of uplink transmission by the plurality of terminals during at least a portion of the transmission opportunity. The access point according to claim 7.
  9. The control circuit sets information indicating the duration of the uplink transmission in the control signal in at least one of a common information field common to the terminals and a user information field specific to the terminals. The access point according to claim 8.
  10. The aforementioned control signal is a Multi-User Request-To-Send Transmission opportunity sharing (MU-RTS TXS) trigger frame. The access point according to claim 1.
  11. The transmission performed by the aforementioned multiple terminals causes one or more terminals other than the aforementioned multiple terminals to set a network assignment vector (NAV). The access point according to claim 1.
  12. The access point is The access point generates a control signal to allocate at least a portion of the transmission time it has acquired to uplink transmissions of multiple terminals. The control signal is transmitted when the access point acquires the transmission opportunity . Communication method.

Description

This disclosure relates to access points, terminals, and communication methods. The Institute of Electrical and Electronics Engineers (IEEE) is currently working on IEEE 802.11be (hereinafter also referred to as "11be"), a next-generation wireless local area network (LAN) standard that will succeed the IEEE 802.11ax standard (hereinafter also referred to as "11ax"). For example, IEEE 802.11ax is also called High Efficiency (HE), while IEEE 802.11be is also called Extreme High Throughput (EHT). IEEE 802.11-21/0268r8, PDT: Channel access for Triggered TXOP SharingIEEE 802.11-20/1312r8, AP assisted SU PPDU Tx for 11be R1IEEE 802.11-21/0485r3, EHT TF ClarificationsIEEE 802.11-20/0967r0, Multi-user Triggered P2P TransmissionIEEE 802.11-19/1582r2, Coordinated AP Time/Frequency Sharing in a Transmit Opportunity in 11be However, the method for allocating transmission opportunities in wireless communication, such as Wi-Fi, has not been sufficiently considered. Non-limiting embodiments of this disclosure contribute to providing access points, terminals, and communication methods that can improve the efficiency of assigning transmission opportunities in wireless communication. An access point according to one embodiment of the present disclosure comprises a control circuit that generates an uplink control signal, which includes information regarding the allocation of at least a portion of the access point's transmission opportunities to a plurality of terminals different from the access point, and a transmission circuit that transmits the control signal. These comprehensive or specific embodiments may be implemented as systems, devices, methods, integrated circuits, computer programs, or recording media, or as any combination of systems, devices, methods, integrated circuits, computer programs, and recording media. According to one embodiment of this disclosure, for example, the efficiency of assigning transmission opportunities in wireless communication can be improved. Further advantages and effects of an embodiment of this disclosure will be made apparent from the specification and drawings. Such advantages and/or effects are provided by several embodiments and features described in the specification and drawings, but not all of them are necessarily provided to obtain one or more identical features. A diagram showing an example of a trigger frame.A diagram showing an example of a Common Info field.A diagram showing an example of a User Info field.A diagram showing an example of a Special User Info field.A diagram showing an example of TXOP Sharing mode.Sequence diagram showing an example of TXOP Sharing mode 1 operation.Sequence diagram showing an example of TXOP Sharing mode 1 operation.Sequence diagram showing an example of TXOP Sharing operation for multiple stations (STA) using Frequency Division Multiplexing (FDM).Sequence diagram showing an example of TXOP Sharing operation for multiple stations (STA) using Frequency Division Multiplexing (FDM).Block diagram showing some configuration examples of access points (APs).Block diagram showing some configuration examples of STABlock diagram showing an example of AP configuration.A diagram showing an example of the TXOP Sharing mode according to Embodiment 1.Block diagram showing an example configuration of an STA terminal.A diagram showing an example of a User Info field according to Embodiment 1.A diagram illustrating an example of a method for notifying about frequency resources.A diagram illustrating an example of a method for notifying about frequency resources.A diagram illustrating an example of a method for notifying about frequency resources.Sequence diagram showing an example of TXOP Sharing operation for multiple STAs using FDM according to Embodiment 1.Sequence diagram showing an example of TXOP Sharing operation for multiple STAs using FDM according to Embodiment 1.Sequence diagram showing an example of TXOP Sharing operation for multiple STAs using Time Division Multiplexing (TDM).Sequence diagram showing an example of TXOP Sharing operation for multiple STAs using TDM according to Embodiment 2.Sequence diagram showing an example of TXOP Sharing operation for multiple STAs using TDM according to Embodiment 2.A diagram showing an example of a User Info field according to Embodiment 2.Sequence diagram showing an example of TXOP Sharing operation for multiple STAs using TDM according to Embodiment 2.A diagram showing an example of a Common Info field.A diagram showing an example of TXOP Sharing mode for multi-users. The embodiments of this disclosure will be described in detail below with reference to the drawings. In 11be, as with 11ax, a priority control scheme called Enhanced Distributed Channel Access (EDCA) may be used to prioritize individual transmission opportunities for Access Categories (ACs). EDCA allows, for example, an AC that has acquired transmission rights to continuously transmit radio signals at short inter-frame space (SIFS) intervals.