EP-4742781-A1 - WIRELESS COMMUNICATION METHOD, APPARATUS, AND DEVICE, AND STORAGE MEDIUM

EP4742781A1EP 4742781 A1EP4742781 A1EP 4742781A1EP-4742781-A1

Abstract

A wireless communication method, apparatus, and device, and a storage medium, related to the technical field of communications. The method comprises: a terminal device receiving, on a first downlink resource, a first downlink channel or signal sent by a network device, the first downlink channel or signal being used for determining synchronization assistance information (710); and on the basis of the synchronization assistance information, the terminal device sending a first uplink channel or signal to the network device by means of a first uplink resource (720). The first downlink channel or signal used for determining the synchronization assistance information is sent to the terminal device by the network device, so that the terminal device can determine the synchronization assistance information on the basis of the first downlink channel or signal, implement, on the basis of the synchronization assistance information, uplink time domain and/or frequency domain synchronization, and then send the first uplink channel or signal to the network device after uplink synchronization is completed. In this way, the terminal device can request the network device to serve the terminal device when there is a connection establishment or service transmission requirement, thereby improving communication efficiency and reducing energy consumption.

Inventors

WU, ZUOMIN

Assignees

GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

Dates

Publication Date: 20260513
Application Date: 20230704

Claims (20)

A method for wireless communication, performed by a terminal device, the method comprising: receiving a first downlink channel or signal from a network device over a first downlink resource, wherein the first downlink channel or signal is used to determine synchronization assistance information; and transmitting a first uplink channel or signal to the network device over a first uplink resource based on the synchronization assistance information.
The method according to claim 1, wherein the first downlink channel or signal comprises a first downlink reference signal, wherein the first downlink reference signal is configured for the terminal device to achieve downlink synchronization, and/or to demodulate other channels or signals within the first downlink channel or signal than the first downlink reference signal.
The method according to claim 2, wherein the first downlink reference signal comprises one or more downlink synchronized signals.
The method according to any one of claims 1 to 3, wherein the first uplink channel or signal is used to request at least one of: transmission of a master information block (MIB), transmission of information carried in a physical broadcast channel (PBCH), transmission of a system information block (SIB)1, transmission of a system message, transmission of a SIB19, rescue, or transmission of a high-priority traffic.
The method according to any one of claims 1 to 4, wherein the first downlink channel or signal carries at least one of a master information block (MIB) or information carried in a physical broadcast channel (PBCH).
The method according to claim 5, wherein the first uplink channel or signal is not configured to request transmission of the MIB.
The method according to any one of claims 1 to 6, wherein the first downlink channel or signal being configured to determine the synchronization assistance information comprises a case where the first downlink channel or signal carries the synchronization assistance information.
The method according to any one of claims 1 to 6, wherein the first downlink channel or signal being configured to determine the synchronization assistance information comprises a case where the first downlink channel or signal carries a first downlink grant, and a second downlink channel or signal scheduled by the first downlink grant carries the synchronization assistance information.
The method according to claim 8, wherein the first downlink channel or signal comprises a first physical downlink control channel (PDCCH), wherein the first PDCCH is scrambled with a system information-radio network temporary identifier (SI-RNTI).
The method according to claim 8 or 9, wherein the first downlink grant is configured to determine at least one of: allocation information of a time-domain resource occupied by the second downlink channel or signal, allocation information of a frequency-domain resource occupied by the second downlink channel or signal, a modulation and coding scheme (MCS) of a transport block (TB) in the second downlink channel or signal, a redundancy version (RV) of an RB in the second downlink channel or signal, whether the second downlink channel or signal comprises an indication of a master information block (MIB), whether the second downlink channel or signal comprises an indication of information carried in a physical broadcast channel (PBCH), whether the second downlink channel or signal comprises an indication of a system information block (SIB)1, whether the second downlink channel or signal comprises an indication of a SIB19, whether the second downlink channel or signal comprises an indication of the synchronization assistance information, quasi-co-location (QCL) information associated with the second downlink channel or signal, or an antenna polarization mode of a satellite.
The method according to any one of claims 1 to 6, wherein the first downlink channel or signal being configured to determine the synchronization assistance information comprises a case where the first downlink channel or signal carries configuration information of a first search space set, the first search space set is configured to transmit a second downlink grant, and a third downlink channel or signal scheduled by the second downlink grant carries the synchronization assistance information.
The method according to claim 11, wherein the first search space set being configured to transmit the second downlink grant comprises a case where the first search space set is configured to transmit a second physical downlink control channel (PDCCH), wherein the second PDCCH carries the second downlink grant.
The method according to claim 11 or 12, wherein the first search space set is a type 0-physical downlink control channel (PDCCH) common search space (CSS) set, and the first downlink channel or signal comprises a physical broadcast channel (PBCH), wherein the PBCH carries configuration information of the type 0-PDCCH CSS set.
The method according to any one of claims 11 to 13, wherein the second downlink grant is configured to determine at least one of: allocation information of a time-domain resource occupied by the third downlink channel or signal, allocation information of a frequency-domain resource occupied by the third downlink channel or signal, a modulation and coding scheme (MCS) of a transport block (TB) in the third downlink channel or signal, a redundancy version (RV) of an RB in the third downlink channel or signal, whether the third downlink channel or signal comprises an indication of a master information block (MIB), whether the third downlink channel or signal comprises an indication of information carried in a physical broadcast channel (PBCH), whether the third downlink channel or signal comprises an indication of a system information block (SIB) 1, whether the third downlink channel or signal comprises an indication of a SIB19, whether the third downlink channel or signal comprises an indication of the synchronization assistance information, quasi-co-location (QCL) information associated with the third downlink channel or signal, or an antenna polarization mode of a satellite.
The method according to any one of claims 1 to 6, wherein the first downlink channel or signal being configured to determine the synchronization assistance information comprises a case where the first downlink channel or signal carries configuration information of a first control resource set, the first control resource set is configured to transmit a third downlink grant, and a fourth downlink channel or signal scheduled by the third downlink grant carries the synchronization assistance information.
The method according to claim 15, wherein the first control resource set being configured to transmit the third downlink grant comprises a case where the first control resource set is configured to transmit a third physical downlink control channel (PDCCH), wherein the third PDCCH carries the third downlink grant.
The method according to claim 15 or 16, wherein the first control resource set is a type 0-physical downlink control channel (PDCCH) common search space (CSS) set, and the first downlink channel or signal comprises a physical broadcast channel (PBCH), wherein the PBCH carries configuration information of the first control resource set.
The method according to any one of claims 15 to 17, wherein the third downlink grant is configured to determine at least one of: allocation information of a time-domain resource occupied by the fourth downlink channel or signal, allocation information of a frequency-domain resource occupied by the fourth downlink channel or signal, a modulation and coding scheme (MCS) of a transport block (TB) in the fourth downlink channel or signal, a redundancy version (RV) of an RB in the fourth downlink channel or signal, whether the fourth downlink channel or signal comprises an indication of a master information block (MIB), whether the fourth downlink channel or signal comprises an indication of information carried in a physical broadcast channel (PBCH), whether the fourth downlink channel or signal comprises an indication of a system information block (SIB)1, whether the fourth downlink channel or signal comprises an indication of a SIB19, whether the fourth downlink channel or signal comprises an indication of the synchronization assistance information, quasi-co-location (QCL) information associated with the fourth downlink channel or signal, or an antenna polarization mode of a satellite.
The method according to any one of claims 1 to 18, wherein the first uplink resource is determined based on at least one of the first downlink resource or the first downlink channel or signal.
The method according to claim 19, wherein the first uplink resource being determined based on at least one of the first downlink resource or the first downlink channel or signal comprises at least one of the following items: a time-domain position of the first uplink resource is determined based on a time-domain position of the first downlink resource; a time-domain position of the first uplink resource is determined based on a time-domain position of a first downlink reference signal within the first downlink channel or signal; a frequency-domain position of the first uplink resource is determined based on a frequency-domain position of the first downlink resource; a reference signal sequence associated with the first uplink resource is determined based on a first downlink reference signal within the first downlink channel or signal; quasi-co-location (QCL) information associated with the first uplink resource is determined based on QCL information associated with the first downlink resource; the first downlink channel or signal carries indication information of a time-domain position of the first uplink resource; the first downlink channel or signal carries indication information of a frequency-domain position of the first uplink resource; the first downlink channel or signal carries indication information of a reference signal sequence associated with the first uplink resource; or the first downlink channel or signal carries indication information of QCL information associated with the first uplink resource.

Description

TECHNICAL FIELD Embodiments of the present disclosure relate to the technical field of communications, and in particular, relate to a method and apparatus for wireless communication, and a device and a storage medium thereof. RELATED ART In further systems for non-terrestrial networks (NTN), connection establishment or traffic transmission between a terminal device and a network device is requested by the terminal device for power saving or other purposes (for example, avoiding providing services in some countries or regions where it is not allowed). Alternatively, in a case where no terminal device requests the connection establishment or traffic transmission, the network device turns off part of communication devices to save power; and in a case where the terminal device requests the connection establishment or traffic transmission, the network device turns on the communication devices to achieve normal communication with the terminal device. However, in such scenarios, how to achieve communication between the terminal device and the network device requires further research. SUMMARY Embodiments of the present disclosure provide a method and apparatus for wireless communication, and a device and a storage medium thereof. The technical solutions are as follows. According to some embodiments of the present disclosure, a method for wireless communication is provided. The method is performed by a terminal device, and includes: receiving a first downlink channel or signal from a network device over a first downlink resource, wherein the first downlink channel or signal is configured to determine synchronization assistance information; andtransmitting a first uplink channel or signal to the network device over a first uplink resource based on the synchronization assistance information. According to some embodiments of the present disclosure, a method for wireless communication is provided. The method is performed by a network device, and includes: transmitting a first downlink channel or signal to a terminal device over a first downlink resource, wherein the first downlink channel or signal is configured to determine synchronization assistance information; anddetecting a first uplink channel or signal transmitted by the terminal device over a first uplink resource based on the synchronization assistance information. According to some embodiments of the present disclosure, an apparatus for wireless communication is provided. The apparatus includes: a receiving module, configured to receive a first downlink channel or signal from a network device over a first downlink resource, wherein the first downlink channel or signal is configured to determine synchronization assistance information; anda transmitting module, configured to transmit a first uplink channel or signal to the network device over a first uplink resource based on the synchronization assistance information. According to some embodiments of the present disclosure, an apparatus for wireless communication is provided. The apparatus includes: a transmitting module, configured to transmit a first downlink channel or signal to a terminal device over a first downlink resource, wherein the first downlink channel or signal is configured to determine synchronization assistance information; anda receiving module, configured to detect a first uplink channel or signal transmitted by the terminal device over a first uplink resource based on the synchronization assistance information. According to some embodiments of the present disclosure, a communication device is provided. The communication device includes a processor and a memory. The memory is configured to store one or more computer programs. The processor is configured to load and run the one or more computer programs to cause the communication device to perform the method wireless communication performed by the terminal device or the method wireless communication performed by the network device described above. According to some embodiments of the present disclosure, a computer-readable storage medium is provided. The storage medium stores one or more computer programs. The one or more computer programs, when loaded and run by a processor, cause the processor to perform the method wireless communication performed by the terminal device or the method wireless communication performed by the network device described above. According to some embodiments of the present disclosure, a chip is provided. The chip includes programmable logic circuitry and/or one or more program instructions. The chip, when running, is caused to perform the method wireless communication performed by the terminal device or the method wireless communication performed by the network device described above. According to some embodiments of the present disclosure, a computer program product is provided. The computer program product includes one or more computer instructions stored in a computer-readable storage medium. The one or more compu