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CN-122028200-A - Method and apparatus in a node for wireless communication

CN122028200ACN 122028200 ACN122028200 ACN 122028200ACN-122028200-A

Abstract

The application discloses a method and a device in a node for wireless communication. The method comprises the steps that a node receives first DCI, the node sends first signals, the first signals adopt OOK, the first DCI is configured with the first signals, the first DCI is earlier than the first signals, the time interval length between the first DCI and the associated time of the first signals is not smaller than a first threshold value, and the first threshold value depends on the time length of OOK time units occupied by the first signals. The application reduces the complexity of product realization and simultaneously optimizes the time delay performance.

Inventors

  • LIU ZHENG

Assignees

  • 上海科邸斯科技有限公司

Dates

Publication Date
20260512
Application Date
20241031

Claims (10)

  1. 1. A first node for wireless communication, comprising: a first receiver that receives a first DCI; A first transmitter, configured to transmit a first signal, where the first signal adopts OOK, and the first DCI configures the first signal; the first DCI is earlier than the first signal, the time interval length between the first DCI and the associated time of the first signal is not smaller than a first threshold value, and the first threshold value depends on the time length of an OOK time unit occupied by the first signal.
  2. 2. The first node of claim 1, wherein the first threshold is dependent on a subcarrier spacing of subcarriers occupied by the first DCI indicating the length of time of the OOK time units occupied by the first signal.
  3. 3. The first node according to claim 1 or 2, characterized in that the first signal comprises a first sub-signal and a second sub-signal, the first sub-signal comprises control information bits, the second sub-signal comprises data information bits, the first sub-signal and the second sub-signal are orthogonal in time domain, and the time domain interval length between the first sub-signal and the second sub-signal is related to the time length of the OOK time unit occupied by the first signal.
  4. 4. A first node according to any of claims 1-3, characterized in that the first transmitter transmits a first information block, wherein the first information block indicates at least one of a maximum value or a minimum value of the time length of the supported OOK time units.
  5. 5. The first node according to any of claims 1-4, characterized in that a target power value is equal to a transmission power value of the first signal, the target power value being equal to a small value compared between a first upper value and a first power value, at least one of the first upper value or the first power value being dependent on the time length of the OOK time unit occupied by the first signal.
  6. 6. The first node according to any of claims 1-5, wherein the first transmitter transmits a second signal, wherein the second signal indicates time domain resources of the first signal, and wherein a starting time instant of the second signal is the associated time instant of the first signal.
  7. 7. The first node of any of claims 1-6, wherein the first threshold depends on a first parameter value that depends on a subcarrier spacing of subcarriers occupied by the first DCI, a subcarrier spacing of subcarriers occupied by the first signal, and a number of OOK time units included in one multicarrier symbol occupied by the first signal.
  8. 8. A second node for wireless communication, comprising: a second transmitter that transmits the first DCI; A second receiver, configured to receive a first signal, where the first signal adopts OOK, and the first DCI configures the first signal; the first DCI is earlier than the first signal, the time interval length between the first DCI and the associated time of the first signal is not smaller than a first threshold value, and the first threshold value depends on the time length of an OOK time unit occupied by the first signal.
  9. 9. A method in a first node for wireless communication, comprising: Receiving first DCI; Transmitting a first signal, wherein the first signal adopts OOK, and the first DCI configures the first signal; the first DCI is earlier than the first signal, the time interval length between the first DCI and the associated time of the first signal is not smaller than a first threshold value, and the first threshold value depends on the time length of an OOK time unit occupied by the first signal.
  10. 10. A method in a second node for wireless communication, comprising: Transmitting a first DCI; Receiving a first signal, wherein the first signal adopts OOK, and the first DCI configures the first signal; the first DCI is earlier than the first signal, the time interval length between the first DCI and the associated time of the first signal is not smaller than a first threshold value, and the first threshold value depends on the time length of an OOK time unit occupied by the first signal.

Description

Method and apparatus in a node for wireless communication Technical Field The present application relates to a transmission method and apparatus in a wireless communication system, and more particularly, to a scheme and apparatus for delay design in wireless communication. Background Future wireless communication systems have more and more diversified application scenes, and different application scenes have different performance requirements on the system. In order to meet different performance requirements of various application scenarios, research on New air interface technology (NR, new Radio) (or 5G) is started at 3GPP (3 rd Generation Partner Project, third generation partnership project) RAN (Radio Access Network ) # 72. With the wide application of 5G, new service modes and new application scenarios are continuously emerging, and the existing 5G standard cannot fully meet new requirements, so that 3GPP is ready to start early-stage research on 6G. With the more diversified application scenarios and the advent of new traffic patterns, the demand for low-complexity and low-power transmission schemes is increasing, and thus 6G needs to explore wireless transmission modes that are better adapted and supported with low complexity and low power consumption. Disclosure of Invention The 5G NR system initiates research work on low power wake-up signals (LP-WUS, low power wake up signal) and the environment Internet of things (Ambient Internet of Things) at Rel-18 and Rel-19, respectively, where on/off keying (OOK) is considered one of the potential key technologies. In the existing low-power consumption wake-up signal research and standardization process of 5G, OOK is only used for the transmission of the downlink low-power consumption wake-up signal, but not for the uplink transmission. In the environmental physical network, OOK is expected to be used as a transmission from a reader (reader) to an internet of things device (device), and the research work has just been developed. The applicant expects that OOK will be more widely used in future 6G networks, such as in uplink transmission of 6G, in between user equipments, and in wider internet of things. Meanwhile, the applicant finds that after the environmental physical network and the expansion of OOK to a wider application scene, the delay relation between the transmission and the scheduling of DCI by OOK needs to be supported and defined, and the existing design for supporting the delay relation between OOK transmission and the scheduling of DCI does not exist. Aiming at the scheduling delay problem of signals adopting OOK in the future, the application discloses a solution. It should be noted that in the description of the present application, only uplink transmission and transmission from a reader to an internet of things device are taken as a typical application scenario or example, the present application is equally applicable to 6G networks or other scenarios (for example, scenarios where OOK scheduling delay management is needed, or other scenarios where OOK is supported, such as scenarios where full duplex is supported, or scenarios where transmission from a user equipment to a user equipment is supported, or scenarios where different application scenarios, such as an eMBB, URLLC, full duplex network, non-terrestrial network, universal integrated network, intelligent super surface, terahertz network, V2X, may be used as an example, where different scenarios (including but not limited to an eMBB, URLLC, full duplex network, non-terrestrial network, universal integrated network, intelligent super surface, terahertz network, V2X, etc.) or different application parameters also use a unified solution to help reduce hardware complexity and cost. The application discloses a method used in a first node of wireless communication, which is characterized by comprising the following steps: Receiving first DCI; Transmitting a first signal, wherein the first signal adopts OOK, and the first DCI configures the first signal; the first DCI is earlier than the first signal, the time interval length between the first DCI and the associated time of the first signal is not smaller than a first threshold value, and the first threshold value depends on the time length of an OOK time unit occupied by the first signal. As an embodiment, the first threshold is associated with a time length of OOK (On/OffKeying ) time units, and processing capabilities for different OOK time unit lengths are considered in processing delays between DCI (DownlinkControl Information, downstream control information) and employing OOK signals, while reducing delays while guaranteeing product implementation. According to an aspect of the present application, the above method is characterized in that the first threshold depends on a subcarrier spacing of subcarriers occupied by the first DCI, the first DCI indicating the time length of the OOK time units occupied by the first signal. According to