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EP-4277367-B1 - WIRELESS COMMUNICATION METHOD, TERMINAL DEVICE, AND NETWORK DEVICE

EP4277367B1EP 4277367 B1EP4277367 B1EP 4277367B1EP-4277367-B1

Inventors

  • HE, CHUANFENG

Dates

Publication Date
20260506
Application Date
20210113

Claims (8)

  1. A wireless communication method, comprising: determining (S210), by a terminal device, that transmission power of a plurality of repeated transmissions of an uplink channel is same, wherein the plurality of repeated transmissions of the uplink channel are performed per time slot, the method further comprising: performing, by the network device, joint channel estimation between time slots on the plurality of repeated transmissions of the uplink channel, wherein the uplink channel comprises a Physical Uplink Control Channel, PUCCH; wherein said determining (S210), by the terminal device, that the transmission power of the plurality of repeated transmissions of the uplink channel is same comprises: determining, by the terminal device, that the transmission power of the plurality of repeated transmissions of the uplink channel in a first transmission occasion set is same; wherein a number of transmission occasions included in the first transmission occasion set is configured by a network device.
  2. The method according to claim 1, wherein said determining, by the terminal device, that the transmission power of the plurality of repeated transmissions of the uplink channel in the first transmission occasion set is same comprises: performing, by the terminal device in the plurality of repeated transmissions of the uplink channel in the first transmission occasion set, same power adjustment for the plurality of repeated transmissions of the uplink channel according to a power control command effective in the first transmission occasion set.
  3. The method according to claim 1, wherein said determining, by the terminal device, that the transmission power of the plurality of repeated transmissions of the uplink channel in the first transmission occasion set is same comprises: receiving, by the terminal device in the first transmission occasion set, a power control command applied to any one or more of the plurality of repeated transmissions in the first transmission occasion set; and performing, by the terminal device, power adjustment for the uplink channel according to the power control command at a transmission occasion or a transmission occasion set after the first transmission occasion set.
  4. The method according to any one of claims 1 to 3, wherein the plurality of repeated transmissions of the uplink channel are part or all repeated transmissions of the uplink channel.
  5. A terminal device (700), comprising: a memory (720) having a computer program stored thereon; and a processor (710) configured to invoke and execute the computer program from the memory (720) to implement a wireless communication method, the method comprising: determining (S210) that transmission power of a plurality of repeated transmissions of an uplink channel is same, wherein the plurality of repeated transmissions of the uplink channel are performed per time slot; wherein the uplink channel comprises a Physical Uplink Control Channel, PUCCH; wherein said determining (S210), by the terminal device, that the transmission power of the plurality of repeated transmissions of the uplink channel is same comprises: determining, by the terminal device, that the transmission power of the plurality of repeated transmissions of the uplink channel in a first transmission occasion set is same; wherein a number of transmission occasions included in the first transmission occasion set is configured by a network device; wherein joint channel estimation between time slots on the plurality of repeated transmissions of the uplink channel performed by a network device.
  6. The terminal device (700) according to claim 5, wherein said determining that the transmission power of the plurality of repeated transmissions of the uplink channel in the first transmission occasion set is same comprises: performing, in the plurality of repeated transmissions of the uplink channel in the first transmission occasion set, same power adjustment for the plurality of repeated transmissions of the uplink channel according to a power control command effective in the first transmission occasion set.
  7. The terminal device (700) according to claim 5, wherein said determining that the transmission power of the plurality of repeated transmissions of the uplink channel in the first transmission occasion set is same comprises: receiving, in the first transmission occasion set, a power control command applied to any one or more of the plurality of repeated transmissions in the first transmission occasion set; and performing power adjustment for the uplink channel according to the power control command at a transmission occasion or a transmission occasion set after the first transmission occasion set.
  8. The terminal device (700) according to any one of claims 5 to 7, wherein the plurality of repeated transmissions of the uplink channel are part or all repeated transmissions of the uplink channel.

Description

TECHNICAL FIELD The embodiments of the present disclosure relate to communication technology, and more particularly, to a wireless communication method and a terminal device. BACKGROUND In the New Radio (NR) system, for uplink channels, such as a Physical Uplink Shared Channel (PUSCH) and a Physical Uplink Control Channel (PUCCH), repeated transmission is used to improve coverage. In repeated transmission of an uplink channel, joint channel estimation can be performed between different transmissions to improve the performance of channel estimation. However, how to perform power control for the joint channel estimation is a problem to be solved. US 20180124709A1 discloses a method and apparatus for controlling uplink transmission power in wireless communication system supporting machine-type communication. US 20180213484A1 discloses a method and device for transmitting signal in wireless communication system. US 20170273027A1 discloses a method and apparatus for controlling uplink transmission power in wireless access system supporting machine-type communication. SUMMARY The embodiments of the present disclosure provide a wireless communication method, and a terminal device. Transmission power of a plurality of repeated transmissions of an uplink channel is same, thereby achieving joint channel estimation between time slots and improving transmission performance of the uplink channel. In a first aspect, a wireless communication method is provided, which is defined in claim 1. In a second aspect, a terminal device is provided, which is defined in claim 5. Further advantageous embodiments of the present disclosure are indicated in the dependent claims. It is to be understood that both the foregoing general description and the following detailed description are exemplary only, and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic diagram showing an architecture of a communication system in which an embodiment of the present disclosure is applied.FIG. 2 is a flowchart illustrating a wireless communication method according to an embodiment of the present disclosure.FIG. 3 is a schematic diagram showing power control according to an embodiment of the present disclosure.FIG. 4 is a schematic diagram showing power control according to another embodiment of the present disclosure.FIG. 5 is a schematic diagram showing power control according to yet another embodiment of the present disclosure.FIG. 6 is a schematic diagram showing power control according to still another embodiment of the present disclosure.FIG. 7 is a flowchart illustrating a wireless communication method according to another embodiment of the present disclosure.FIG. 8 is a schematic block diagram of a terminal device according to an embodiment of the present disclosure.FIG. 9 is a schematic block diagram of a terminal device according to another embodiment of the present disclosure.FIG. 10 is a schematic block diagram of a network device according to an embodiment of the present disclosure.FIG. 11 is a schematic block diagram of a communication device according to an embodiment of the present disclosure.FIG. 12 is a schematic block diagram of an apparatus according to an embodiment of the present disclosure.FIG. 13 is a schematic block diagram of a communication system according to an embodiment of the present disclosure. DESCRIPTION OF EMBODIMENTS The technical solutions in the embodiments of the present disclosure will be described below with reference to the figure in the embodiments of the present disclosure. Obviously, the described embodiments are only some embodiments, rather than all embodiments, of the present disclosure. All other embodiments obtained by those skilled in the art based on the embodiments in the present disclosure without inventive efforts are to be encompassed by the scope of the present disclosure. The solutions according to the embodiments of the present disclosure can be applied to various communication systems, including for example: Global System of Mobile Communication (GSM), Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolved NR system, LTE-based access to unlicensed spectrum (LTE-U) system, NR-based access to unlicensed spectrum (NR-U) system, Non-Terrestrial Network (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), the 5th Generation (5G) system, or other communication systems. Generally, traditional communication systems can support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will support not only traditional communication, but also e.g., Device to Device (D2D) communication, Machine to Machine (M2M