Communication methods, communication system and storage medium

Abstract

Provided in the present disclosure are communication methods, devices and a storage medium. A method is executed by a terminal, and comprises: receiving first information sent by a network device; and on the basis of the first information, determining a preamble group and / or a transmission power used to perform repeated PRACH transmission on a first time-domain unit, wherein the first time-domain unit comprises a subband full duplex (SBFD) symbol and a non-SBFD symbol. The present disclosure can realize the determination of the preamble group and / or the transmission power used by the terminal to perform repeated PRACH transmission on the first time-domain unit.

Description

Communication method, communication system and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication method, a communication system, and a storage medium. Background Art

[0002] In the field of communications technology, a subband full-duplex (SBFD) symbol includes both a downlink (DL) subband and an uplink (UL) subband in the frequency domain, and a physical random access channel (PRACH) can be used to implement random access.

[0003] Summary of the Invention

[0004] The present disclosure provides a communication method, a communication device, a communication system, and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a terminal. The method includes: receiving first information sent by a network device; based on the first information, determining a preamble code group and / or transmission power used for PRACH repeated transmission on a first time domain unit, where the first time domain unit includes a sub-band full-duplex SBFD symbol and a non-SBFD symbol.

[0006] In the above method, the preamble code group and / or transmission power used by the terminal for repeated PRACH transmission in the first time domain unit may be determined.

[0007] According to a second aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a network device. The method includes: sending first information to a terminal; based on the first information, determining the preamble code group and / or transmission power used for PRACH repeated transmission on a first time domain unit, where the first time domain unit includes sub-band full-duplex SBFD symbols and non-SBFD symbols.

[0008] In the above method, the preamble code group and / or transmission power used by the terminal for repeated PRACH transmission in the first time domain unit may be determined.

[0009] According to a third aspect of an embodiment of the present disclosure, a terminal is proposed, including a transceiver module for receiving first information sent by a network device; a processing module for determining, based on the first information, a preamble code group and / or transmission power used for PRACH repeated transmission on a first time domain unit, where the first time domain unit includes a sub-band full-duplex SBFD symbol and a non-SBFD symbol.

[0010] According to a fourth aspect of an embodiment of the present disclosure, a network device is proposed, including a transceiver module for sending first information to a terminal; a determination module for determining, based on the first information, a preamble code group and / or transmission power used for PRACH repeated transmission on a first time domain unit, where the first time domain unit includes a sub-band full-duplex SBFD symbol and a non-SBFD symbol.

[0011] According to the fifth aspect of an embodiment of the present disclosure, a communication device is proposed, which includes: one or more processors; wherein the one or more processors are used to call instructions so that the communication device executes a method as described in any one of the first aspects of the present disclosure, or is used to execute a method as described in any one of the second aspects of the present disclosure.

[0012] According to a sixth aspect of an embodiment of the present disclosure, a communication system is proposed, including a terminal and a network device, wherein the terminal is configured to implement the method of the first aspect, and the network device is configured to implement the method of the second aspect.

[0013] According to a seventh aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method of any one of the first and second aspects.

[0014] According to an eighth aspect of the embodiments of the present disclosure, a computer program product is proposed, characterized in that it includes a computer program, and when the computer program is executed by a processor, it implements the method of any one of the embodiments of the first and second aspects of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0016] FIG1 is a schematic diagram of the architecture of some communication systems provided by embodiments of the present disclosure;

[0017] FIG2 is an interactive diagram of a communication method provided by an embodiment of the present disclosure;

[0018] FIG3a-FIG3b are flowcharts of some communication methods provided by embodiments of the present disclosure;

[0019] 4a-4b are flowcharts of other communication methods provided by embodiments of the present disclosure;

[0020] FIG5 is a flow chart of other communication methods provided by embodiments of the present disclosure;

[0021] FIG6 is a schematic diagram of a PRACH transmission method provided by an embodiment of the present disclosure;

[0022] FIG7 is a schematic diagram of another PRACH transmission method provided by an embodiment of the present disclosure;

[0023] FIG8 is a schematic diagram of a flow chart of a PRACH repeated transmission method provided by an embodiment of the present disclosure;

[0024] FIG9a is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure;

[0025] FIG9b is a schematic structural diagram of a network device provided by an embodiment of the present disclosure;

[0026] FIG10a is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0027] FIG10 b is a schematic structural diagram of a chip provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] The embodiments of the present disclosure provide a communication method, a communication device, a communication system, and a storage medium.

[0029] In a first aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a terminal, and the method includes: receiving first information sent by a network device; based on the first information, determining the preamble code group and / or transmission power used for PRACH repeated transmission on a first time domain unit, and the first time domain unit includes sub-band full-duplex SBFD symbols and non-SBFD symbols.

[0030] In the above embodiment, the preamble code group and / or transmission power used by the terminal for repeated PRACH transmission in the first time domain unit may be determined.

[0031] In combination with some embodiments of the first aspect, in some embodiments, determining, based on the first information, the preamble code group used for PRACH repetition transmission on the first time domain unit includes: based on the first information, determining to use the first preamble code group for PRACH repetition transmission on SBFD symbols and to use the second preamble code group for PRACH repetition transmission on non-SBFD symbols, the first preamble code group and the second preamble code group being different; based on the first preamble code group and / or the second preamble code group, determining the preamble code group used for PRACH repetition transmission on the first time domain unit.

[0032] In the above embodiment, the preamble group used for PRACH repetitive transmission in the first time domain unit may be determined according to the first preamble group and the second preamble group.

[0033] In combination with some embodiments of the first aspect, in some embodiments, determining the preamble code group used for PRACH repeated transmission on the first time domain unit based on the first preamble code group and / or the second preamble code group includes: based on the first preamble code group and / or the second preamble code group, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is: the preamble code group used for the first PRACH transmission in the PRACH repeated transmission.

[0034] In the above embodiment, the preamble group used for the first PRACH transmission in the PRACH repeated transmission may be determined as the preamble group used for the PRACH repeated transmission in the first time domain unit.

[0035] In combination with some embodiments of the first aspect, in some embodiments, based on the first preamble code group and / or the second preamble code group, determining that the preamble code group used for PRACH repetition on the first time domain unit is the preamble code group used for the first PRACH transmission in the PRACH repetition includes: determining the first time domain symbol type, the first time domain symbol type is the time domain symbol type of the time domain symbol of the first PRACH transmission in the PRACH repetition; determining that the preamble code group used for PRACH repetition on the first time domain unit is the first preamble code group, and the first time domain symbol type is an SBFD symbol; or, determining that the preamble code group used for PRACH repetition on the first time domain unit is the second preamble code group, and the first time domain symbol type is a non-SBFD symbol.

[0036] In the above embodiment, the preamble group used for PRACH repetition transmission in the first time domain unit may be determined according to the first time domain symbol type of the first PRACH transmission in the PRACH repetition transmission.

[0037] In combination with some embodiments of the first aspect, in some embodiments, the method also includes: receiving second information sent by the network device; based on the first preamble code group and / or the second preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit includes: based on the second information, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group or the second preamble code group.

[0038] In the above embodiment, the preamble group used for repeated PRACH transmission in the first time domain unit may be determined through protocol agreement or network device instruction.

[0039] In combination with some embodiments of the first aspect, in some embodiments, based on the second information, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group or the second preamble code group includes: based on the second information, determining that the time domain symbol type that meets the preset conditions is the second time domain symbol type; determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group, and the second time domain symbol type is an SBFD symbol; or, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the second preamble code group, and the second time domain symbol type is a non-SBFD symbol.

[0040] In the above embodiment, the preamble group used for repeated PRACH transmission on the first time domain unit may be determined according to the second time domain symbol type that meets the preset condition.

[0041] In combination with some embodiments of the first aspect, in some embodiments, based on the first preamble code group and / or the second preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit includes: determining the first preamble code group, the first preamble code group is the preamble code group used for PRACH repeated transmission on the SBFD symbol; and determining the second preamble code group, the second preamble code group is the preamble code group used for PRACH repeated transmission on the non-SBFD symbol.

[0042] In the above embodiment, the preamble code group used for PRACH repetitive transmission on the first time domain unit may be determined by determining the symbol of the first time domain unit.

[0043] In combination with some embodiments of the first aspect, in some embodiments, the preamble codes used on different time domain symbol categories in each PRACH repeated transmission are different, and the preamble codes used on the same time domain symbol category are the same.

[0044] In the above embodiment, by determining the preamble code group used for PRACH repeated transmission on the first time domain unit according to the symbol of the first time domain unit, it can be achieved that the preamble codes used on different time domain symbol categories in each PRACH repeated transmission are different, and the preamble codes used on the same time domain symbol category are the same.

[0045] In combination with some embodiments of the first aspect, in some embodiments, determining the preamble code group used for PRACH repetition on the first time domain unit based on the first preamble code group and / or the second preamble code group includes: determining the third time domain symbol type based on the second information, the third time domain symbol type being the time domain symbol type used by the terminal for PRACH repetition on the first time domain unit; determining to perform PRACH repetition on SBFD symbols, the preamble code group used by the terminal for PRACH repetition on SBFD symbols being the first preamble code group, and the third time domain symbol type being the SBFD symbol; or, determining to perform PRACH repetition on non-SBFD symbols, the preamble code group used by the terminal for PRACH repetition on non-SBFD symbols being the second preamble code group, and the third time domain symbol type being the non-SBFD symbol.

[0046] In the above embodiment, the symbols and preamble group for PRACH repetition transmission may be determined by determining the time domain symbol type used by the terminal for PRACH repetition transmission in the first time domain unit.

[0047] In combination with some embodiments of the first aspect, in some embodiments, determining the preamble code group used for PRACH repeated transmission on the first time domain unit based on the first information includes: determining a third preamble code group based on the first information, the third preamble code group being the preamble code group used for PRACH repeated transmission on SBFD symbols and the preamble code group used for PRACH repeated transmission on non-SBFD symbols; based on the third preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit.

[0048] In the above embodiment, when it is determined that the preamble code groups used for PRACH repetition transmission on SBFD symbols and non-SBFD symbols are both the third preamble code group, the preamble code group used for PRACH repetition transmission on the first time domain unit can be determined based on the third preamble code group.

[0049] In combination with some embodiments of the first aspect, in some embodiments, based on the third preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit includes: determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the third preamble code group.

[0050] In the above embodiment, it can be determined that the preamble group used for repeated PRACH transmission in the first time domain unit is the third preamble group.

[0051] In combination with some embodiments of the first aspect, in some embodiments, determining the preamble code group used for PRACH repetition on the first time domain unit based on the third preamble code group includes: determining the third time domain symbol type based on the second information, the third time domain symbol type being the time domain symbol type used by the terminal for PRACH repetition on the first time domain unit; determining to perform PRACH repetition on SBFD symbols, the preamble code group used by the terminal for PRACH repetition on SBFD symbols being the third preamble code group, and the third time domain symbol type being the SBFD symbol; or, determining to perform PRACH repetition on non-SBFD symbols, the preamble code group used by the terminal for PRACH repetition on non-SBFD symbols being the third preamble code group, and the third time domain symbol type being the non-SBFD symbol.

[0052] In the above embodiment, the time domain symbol type used by the terminal for PRACH repetition transmission on the first time domain unit can be determined according to the protocol agreement or the network device instruction, and the preamble code group used for PRACH repetition transmission can be determined according to the time domain symbol type.

[0053] In combination with some embodiments of the first aspect, in some embodiments, the preamble code used for each repeated PRACH transmission is the same.

[0054] In the above embodiment, it can be achieved that the preamble code used for each repeated PRACH transmission is the same.

[0055] In combination with some embodiments of the first aspect, in some embodiments, determining the transmit power used for repeated PRACH transmission on the first time domain unit based on the first information includes: determining, based on the first information, to use a first transmit power for repeated PRACH transmission on SBFD symbols and to use a second transmit power for repeated PRACH transmission on non-SBFD symbols, the first transmit power and the second transmit power being different; determining the transmit power used for repeated PRACH transmission on the first time domain unit based on the first transmit power and / or the second transmit power.

[0056] In the above embodiment, the first transmission power used for repeated transmission on SBFD symbols and the second transmission power used for repeated transmission on non-SBFD symbols may be determined according to the first information.

[0057] In combination with some embodiments of the first aspect, in some embodiments, determining the transmit power used for PRACH repeated transmission on the first time domain unit based on the first transmit power and / or the second transmit power includes: based on the first transmit power and / or the second transmit power, determining the transmit power used for PRACH repeated transmission on the first time domain unit as: the transmit power used for the first PRACH transmission in the PRACH repeated transmission.

[0058] In the above embodiment, the transmit power used for the first PRACH transmission in the PRACH repeated transmission may be determined as the transmit power used for the PRACH repeated transmission in the first time domain unit.

[0059] In combination with some embodiments of the first aspect, in some embodiments, based on the first transmit power and / or the second transmit power, the transmit power used for PRACH repeated transmission on the first time domain unit is determined to be: the transmit power used for the first PRACH transmission in the PRACH repeated transmission includes: determining the first time domain symbol type, the first time domain symbol type is the time domain symbol type of the time domain symbol in which the first PRACH transmission in the PRACH repeated transmission is located; determining that the transmit power used for PRACH repeated transmission on the first time domain unit is the first transmit power, and the first time domain symbol type is an SBFD symbol; or, determining that the transmit power used for PRACH repeated transmission on the first time domain unit is the second transmit power, and the first time domain symbol type is a non-SBFD symbol.

[0060] In the above embodiment, the transmit power used for PRACH repetition transmission in the first time domain unit may be determined according to the first time domain symbol type of the first PRACH transmission in the PRACH repetition transmission.

[0061] In combination with some embodiments of the first aspect, in some embodiments, determining the transmit power used for PRACH repeated transmission on the first time domain unit based on the first transmit power and / or the second transmit power includes: based on the second information, determining that the transmit power used for PRACH repeated transmission on the first time domain unit is the first transmit power or the second transmit power.

[0062] In the above embodiment, the transmission power used for repeated PRACH transmission in the first time domain unit may be determined according to the second information.

[0063] In combination with some embodiments of the first aspect, in some embodiments, based on the second information, determining that the transmission power used for repeated PRACH transmission on the first time domain unit is the first transmission power or the second transmission power includes: based on the second information, determining the second time domain symbol type that meets the preset conditions; determining that the transmission power used for repeated PRACH transmission on the first time domain unit is the first transmission power, and the second time domain symbol type is an SBFD symbol; or, determining that the transmission power used for repeated PRACH transmission on the first time domain unit is the second transmission power, and the second time domain symbol type is a non-SBFD symbol.

[0064] In the above embodiment, a second time domain symbol type that meets a preset condition may be determined, and the transmit power used for repeated PRACH transmission on the first time domain unit may be determined according to the second time domain symbol type.

[0065] In combination with some embodiments of the first aspect, in some embodiments, determining the transmit power used for repeated PRACH transmission on the first time domain unit based on the first transmit power and / or the second transmit power includes: determining a third transmit power based on the first transmit power and / or the second transmit power; and determining that the transmit power used for repeated PRACH transmission on the first time domain unit is the third transmit power.

[0066] In the above embodiment, the transmit power used for repeated PRACH transmission in the first time domain unit may be determined according to the first transmit power and / or the second transmit power.

[0067] In combination with some embodiments of the first aspect, in some embodiments, based on the first transmit power and / or the second transmit power, determining the transmit power used for PRACH repeated transmission on the first time domain unit includes: determining that the transmit power used for PRACH repeated transmission on the SBFD symbol is the first transmit power; and determining that the transmit power used for PRACH repeated transmission on the non-SBFD symbol is the second transmit power.

[0068] In the above embodiment, the transmission power to be used may be determined according to the symbol type for repeated PRACH transmission.

[0069] In combination with some embodiments of the first aspect, in some embodiments, the transmission power used on different time domain symbol categories in each PRACH repetition transmission is different, and the transmission power used on the same time domain symbol category is the same.

[0070] In the above embodiment, the transmit power used is determined according to the symbol type for repeated PRACH transmission, so that different transmit powers are used for different time domain symbol categories in each repeated PRACH transmission, and the same transmit power is used for the same time domain symbol category.

[0071] In combination with some embodiments of the first aspect, in some embodiments, determining the transmit power used for PRACH repetition on the first time domain unit based on the first transmit power and / or the second transmit power includes: determining the third time domain symbol type based on the second information, the third time domain symbol type being the time domain symbol type used by the terminal for PRACH repetition on the first time domain unit; determining to perform PRACH repetition on SBFD symbols, the transmit power used by the terminal for PRACH repetition on SBFD symbols being the first transmit power, and the third time domain symbol type being the SBFD symbol; or, determining to perform PRACH repetition on non-SBFD symbols, the transmit power used by the terminal for PRACH repetition on non-SBFD symbols being the second transmit power, and the third time domain symbol type being the non-SBFD symbol.

[0072] In the above embodiment, the third time domain symbol type may be determined by the time domain symbol type used by the terminal for repeated PRACH transmission on the first time domain unit, and the transmission power used for repeated PRACH transmission may be determined according to the third time domain symbol type.

[0073] In combination with some embodiments of the first aspect, in some embodiments, based on the first information, determining the transmit power used for PRACH repeated transmission on the first time domain unit includes: based on the first information, determining that the transmit power used for PRACH repeated transmission on SBFD symbols and the transmit power used for PRACH repeated transmission on non-SBFD symbols are both fourth transmit powers; based on the fourth transmit power, determining the transmit power used for PRACH repeated transmission on the first time domain unit.

[0074] In the above embodiment, the transmit power used for repeated PRACH transmission in the first time domain unit may be determined based on the fourth transmit power.

[0075] In combination with some embodiments of the first aspect, in some embodiments, based on the fourth transmit power, determining the transmit power used for PRACH repeated transmission on the first time domain unit includes: determining that the transmit power used for PRACH repeated transmission on the first time domain unit is the fourth transmit power.

[0076] In the above embodiment, the transmission power used for repeated PRACH transmission in the first time domain unit may be the fourth transmission power.

[0077] In combination with some embodiments of the first aspect, in some embodiments, determining the transmit power used for PRACH repetition on the first time domain unit based on the fourth transmit power includes: determining the third time domain symbol type based on the second information, the third time domain symbol type being the time domain symbol type used by the terminal for PRACH repetition on the first time domain unit; determining to perform PRACH repetition on SBFD symbols, the transmit power used by the terminal for PRACH repetition on SBFD symbols being the fourth transmit power, and the third time domain symbol type being the SBFD symbol; or, determining to perform PRACH repetition on non-SBFD symbols, the transmit power used by the terminal for PRACH repetition on non-SBFD symbols being the fourth transmit power, and the third time domain symbol type being the non-SBFD symbol.

[0078] In the above embodiment, the symbol for repeated PRACH transmission may be determined according to the third time domain symbol type, and the transmission power on the symbol may be determined to be the fourth transmission power.

[0079] In combination with some embodiments of the first aspect, in some embodiments, the transmission power used for each repeated PRACH transmission is the same.

[0080] In the above embodiment, the transmission power used for each PRACH repetition transmission may be the same.

[0081] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: determining a transmission mode for performing repeated PRACH transmission on a first time domain unit; the transmission mode includes any one of the following: a first transmission mode, indicating that SBFD symbols and non-SBFD symbols are used for repeated PRACH transmission on the first time domain unit; a second transmission mode, indicating that only SBFD symbols are used for repeated PRACH transmission on the first time domain unit; a third transmission mode, indicating that only non-SBFD symbols are used for repeated PRACH transmission on the first time domain unit.

[0082] In the above embodiment, a transmission mode for repeatedly transmitting the PRACH in the first time domain unit may be determined.

[0083] In combination with some embodiments of the first aspect, in some embodiments, determining the transmission mode for repeated PRACH transmission on the first time domain unit includes: based on the second information, determining that the transmission mode is the first transmission mode, the second transmission mode, or the third transmission mode.

[0084] In the above embodiment, the transmission mode of repeatedly transmitting the PRACH in the first time domain unit may be determined based on the second information.

[0085] In combination with some embodiments of the first aspect, in some embodiments, determining the transmission mode for repeated PRACH transmission on the first time domain unit includes: when the first condition is met, determining the transmission mode to be the first transmission mode; when the first condition is not met, determining the transmission mode to be the second transmission mode or the third transmission mode.

[0086] In the above embodiment, the transmission mode of repeatedly transmitting the PRACH in the first time domain unit may be determined by judging the first condition.

[0087] In combination with some embodiments of the first aspect, in some embodiments, the first condition is: the first preamble code group used for PRACH repeated transmission on SBFD symbols is the same as the second preamble code group used for PRACH repeated transmission on non-SBFD symbols, and the intersection of the first preamble code group and the second preamble code group is not empty; or the preamble codes included in the random access opportunities RO associated with the same synchronized broadcast block SSB on SBFD symbols and non-SBFD symbols have an intersection, and the intersection is not empty; or the first transmission power used for PRACH repeated transmission on SBFD symbols is the same as the second transmission power used for PRACH repeated transmission on non-SBFD symbols.

[0088] In the above-described embodiment, the first condition can be determined.

[0089] In combination with some embodiments of the first aspect, in some embodiments, the method also includes: when the transmission mode is the second transmission mode or the third transmission mode, determining that the symbol type used for PRACH repeated transmission on the first time domain unit is a symbol type that meets the preset conditions.

[0090] In the above embodiment, when the transmission mode is the second transmission mode or the third transmission mode, it can be determined that the symbol type that meets the preset condition is the symbol type used for PRACH repeated transmission in the first time domain unit.

[0091] In combination with some embodiments of the first aspect, in some embodiments, the first information includes a first parameter set and / or a second parameter set, the first parameter set is used to determine the preamble code group, the second parameter set is used to determine the transmit power, there is at least one first parameter in the first parameter set that has different values ​​on SBFD symbols and non-SBFD symbols, and there is at least one second parameter in the second parameter set that has different values ​​on SBFD symbols and non-SBFD symbols.

[0092] In the above embodiment, the preamble code group and / or transmission power used for repeated PRACH transmission in the first time domain unit may be determined by determining the first information.

[0093] In the second aspect, an embodiment of the present disclosure proposes a communication method, which is executed by a network device, and the method includes: sending first information to a terminal; based on the first information, determining the preamble code group and / or transmission power used for PRACH repeated transmission on a first time domain unit, and the first time domain unit includes sub-band full-duplex SBFD symbols and non-SBFD symbols.

[0094] In the above embodiment, the preamble code group and / or transmission power used by the terminal for repeated PRACH transmission in the first time domain unit may be determined.

[0095] In combination with some embodiments of the second aspect, in some embodiments, determining, based on the first information, the preamble code group used for PRACH repetition transmission on the first time domain unit includes: based on the first information, determining to use the first preamble code group for PRACH repetition transmission on SBFD symbols and to use the second preamble code group for PRACH repetition transmission on non-SBFD symbols, the first preamble code group and the second preamble code group being different; based on the first preamble code group and / or the second preamble code group, determining the preamble code group used for PRACH repetition transmission on the first time domain unit.

[0096] In the above embodiment, the preamble group used for PRACH repetitive transmission in the first time domain unit may be determined according to the first preamble group and the second preamble group.

[0097] In combination with some embodiments of the second aspect, in some embodiments, determining the preamble code group used for PRACH repeated transmission on the first time domain unit based on the first preamble code group and / or the second preamble code group includes: based on the first preamble code group and / or the second preamble code group, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is: the preamble code group used for the first PRACH transmission in the PRACH repeated transmission.

[0098] In the above embodiment, the preamble group used for the first PRACH transmission in the PRACH repeated transmission may be determined as the preamble group used for the PRACH repeated transmission in the first time domain unit.

[0099] In combination with some embodiments of the second aspect, in some embodiments, based on the first preamble code group and / or the second preamble code group, determining that the preamble code group used for PRACH repetition on the first time domain unit is the preamble code group used for the first PRACH transmission in the PRACH repetition includes: determining the first time domain symbol type, the first time domain symbol type is the time domain symbol type of the time domain symbol of the first PRACH transmission in the PRACH repetition; determining that the preamble code group used for PRACH repetition on the first time domain unit is the first preamble code group, and the first time domain symbol type is an SBFD symbol; or, determining that the preamble code group used for PRACH repetition on the first time domain unit is the second preamble code group, and the first time domain symbol type is a non-SBFD symbol.

[0100] In the above embodiment, the preamble group used for PRACH repetition transmission in the first time domain unit may be determined according to the first time domain symbol type of the first PRACH transmission in the PRACH repetition transmission.

[0101] In combination with some embodiments of the second aspect, in some embodiments, the method also includes: receiving second information sent by the network device; based on the first preamble code group and / or the second preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit includes: based on the second information, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group or the second preamble code group.

[0102] In the above embodiment, the preamble group used for repeated PRACH transmission in the first time domain unit may be determined through protocol agreement or network device instruction.

[0103] In combination with some embodiments of the second aspect, in some embodiments, based on the second information, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group or the second preamble code group includes: based on the second information, determining that the time domain symbol type that meets the preset conditions is the second time domain symbol type; determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group, and the second time domain symbol type is an SBFD symbol; or, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the second preamble code group, and the second time domain symbol type is a non-SBFD symbol.

[0104] In the above embodiment, the preamble group used for repeated PRACH transmission on the first time domain unit may be determined according to the second time domain symbol type that meets the preset condition.

[0105] In combination with some embodiments of the second aspect, in some embodiments, based on the first preamble code group and / or the second preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit includes: determining the first preamble code group, the first preamble code group is the preamble code group used for PRACH repeated transmission on the SBFD symbol; and determining the second preamble code group, the second preamble code group is the preamble code group used for PRACH repeated transmission on the non-SBFD symbol.

[0106] In the above embodiment, the preamble code group used for PRACH repetitive transmission on the first time domain unit may be determined by determining the symbol of the first time domain unit.

[0107] In combination with some embodiments of the second aspect, in some embodiments, the preamble codes used on different time domain symbol categories in each PRACH repeated transmission are different, and the preamble codes used on the same time domain symbol category are the same.

[0108] In the above embodiment, by determining the preamble code group used for PRACH repeated transmission on the first time domain unit according to the symbol of the first time domain unit, it can be achieved that the preamble codes used on different time domain symbol categories in each PRACH repeated transmission are different, and the preamble codes used on the same time domain symbol category are the same.

[0109] In combination with some embodiments of the second aspect, in some embodiments, determining the preamble code group used for PRACH repetition on the first time domain unit based on the first preamble code group and / or the second preamble code group includes: determining the third time domain symbol type based on the second information, the third time domain symbol type being the time domain symbol type used by the terminal for PRACH repetition on the first time domain unit; determining to perform PRACH repetition on SBFD symbols, the preamble code group used by the terminal for PRACH repetition on SBFD symbols being the first preamble code group, and the third time domain symbol type being the SBFD symbol; or, determining to perform PRACH repetition on non-SBFD symbols, the preamble code group used by the terminal for PRACH repetition on non-SBFD symbols being the second preamble code group, and the third time domain symbol type being the non-SBFD symbol.

[0110] In the above embodiment, the symbols and preamble group for PRACH repetition transmission may be determined by determining the time domain symbol type used by the terminal for PRACH repetition transmission in the first time domain unit.

[0111] In combination with some embodiments of the second aspect, in some embodiments, determining the preamble code group used for PRACH repeated transmission on the first time domain unit based on the first information includes: determining a third preamble code group based on the first information, the third preamble code group being the preamble code group used for PRACH repeated transmission on SBFD symbols and the preamble code group used for PRACH repeated transmission on non-SBFD symbols; based on the third preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit.

[0112] In the above embodiment, when it is determined that the preamble code groups used for PRACH repetition transmission on SBFD symbols and non-SBFD symbols are both the third preamble code group, the preamble code group used for PRACH repetition transmission on the first time domain unit can be determined based on the third preamble code group.

[0113] In combination with some embodiments of the second aspect, in some embodiments, based on the third preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit includes: determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the third preamble code group.

[0114] In the above embodiment, it can be determined that the preamble group used for repeated PRACH transmission in the first time domain unit is the third preamble group.

[0115] In combination with some embodiments of the second aspect, in some embodiments, determining the preamble code group used for PRACH repetition on the first time domain unit based on the third preamble code group includes: determining the third time domain symbol type based on the second information, the third time domain symbol type being the time domain symbol type used by the terminal for PRACH repetition on the first time domain unit; determining to perform PRACH repetition on SBFD symbols, the preamble code group used by the terminal for PRACH repetition on SBFD symbols being the third preamble code group, and the third time domain symbol type being the SBFD symbol; or, determining to perform PRACH repetition on non-SBFD symbols, the preamble code group used by the terminal for PRACH repetition on non-SBFD symbols being the third preamble code group, and the third time domain symbol type being the non-SBFD symbol.

[0116] In the above embodiment, the time domain symbol type used by the terminal for PRACH repetition transmission on the first time domain unit can be determined according to the protocol agreement or the network device instruction, and the preamble code group used for PRACH repetition transmission can be determined according to the time domain symbol type.

[0117] In combination with some embodiments of the second aspect, in some embodiments, the preamble code used for each repeated PRACH transmission is the same.

[0118] In the above embodiment, it can be achieved that the preamble code used for each repeated PRACH transmission is the same.

[0119] In combination with some embodiments of the second aspect, in some embodiments, determining the transmit power used for repeated PRACH transmission on the first time domain unit based on the first information includes: determining, based on the first information, to use a first transmit power for repeated PRACH transmission on SBFD symbols and to use a second transmit power for repeated PRACH transmission on non-SBFD symbols, the first transmit power and the second transmit power being different; determining the transmit power used for repeated PRACH transmission on the first time domain unit based on the first transmit power and / or the second transmit power.

[0120] In the above embodiment, the first transmission power used for repeated transmission on SBFD symbols and the second transmission power used for repeated transmission on non-SBFD symbols may be determined according to the first information.

[0121] In combination with some embodiments of the second aspect, in some embodiments, determining the transmit power used for PRACH repeated transmission on the first time domain unit based on the first transmit power and / or the second transmit power includes: based on the first transmit power and / or the second transmit power, determining the transmit power used for PRACH repeated transmission on the first time domain unit as: the transmit power used for the first PRACH transmission in the PRACH repeated transmission.

[0122] In the above embodiment, the transmit power used for the first PRACH transmission in the PRACH repeated transmission may be determined as the transmit power used for the PRACH repeated transmission in the first time domain unit.

[0123] In combination with some embodiments of the second aspect, in some embodiments, based on the first transmit power and / or the second transmit power, the transmit power used for PRACH repeated transmission on the first time domain unit is determined to be: the transmit power used for the first PRACH transmission in the PRACH repeated transmission includes: determining the first time domain symbol type, the first time domain symbol type is the time domain symbol type of the time domain symbol in which the first PRACH transmission in the PRACH repeated transmission is located; determining that the transmit power used for PRACH repeated transmission on the first time domain unit is the first transmit power, and the first time domain symbol type is an SBFD symbol; or, determining that the transmit power used for PRACH repeated transmission on the first time domain unit is the second transmit power, and the first time domain symbol type is a non-SBFD symbol.

[0124] In the above embodiment, the transmit power used for PRACH repetition transmission in the first time domain unit may be determined according to the first time domain symbol type of the first PRACH transmission in the PRACH repetition transmission.

[0125] In combination with some embodiments of the second aspect, in some embodiments, determining the transmit power used for PRACH repeated transmission on the first time domain unit based on the first transmit power and / or the second transmit power includes: based on the second information, determining that the transmit power used for PRACH repeated transmission on the first time domain unit is the first transmit power or the second transmit power.

[0126] In the above embodiment, the transmission power used for repeated PRACH transmission in the first time domain unit may be determined according to the second information.

[0127] In combination with some embodiments of the second aspect, in some embodiments, based on the second information, determining that the transmission power used for repeated PRACH transmission on the first time domain unit is the first transmission power or the second transmission power includes: based on the second information, determining the second time domain symbol type that meets the preset conditions; determining that the transmission power used for repeated PRACH transmission on the first time domain unit is the first transmission power, and the second time domain symbol type is an SBFD symbol; or, determining that the transmission power used for repeated PRACH transmission on the first time domain unit is the second transmission power, and the second time domain symbol type is a non-SBFD symbol.

[0128] In the above embodiment, a second time domain symbol type that meets a preset condition may be determined, and the transmit power used for repeated PRACH transmission on the first time domain unit may be determined according to the second time domain symbol type.

[0129] In combination with some embodiments of the second aspect, in some embodiments, determining the transmit power used for repeated PRACH transmission on the first time domain unit based on the first transmit power and / or the second transmit power includes: determining a third transmit power based on the first transmit power and / or the second transmit power; and determining that the transmit power used for repeated PRACH transmission on the first time domain unit is the third transmit power.

[0130] In the above embodiment, the transmit power used for repeated PRACH transmission in the first time domain unit may be determined according to the first transmit power and / or the second transmit power.

[0131] In combination with some embodiments of the second aspect, in some embodiments, based on the first transmit power and / or the second transmit power, determining the transmit power used for PRACH repeated transmission on the first time domain unit includes: determining the transmit power used for PRACH repeated transmission on the SBFD symbol as the first transmit power; and determining the transmit power used for PRACH repeated transmission on the non-SBFD symbol as the second transmit power.

[0132] In the above embodiment, the transmission power to be used may be determined according to the symbol type for repeated PRACH transmission.

[0133] In combination with some embodiments of the second aspect, in some embodiments, the transmission power used on different time domain symbol categories in each PRACH repetition transmission is different, and the transmission power used on the same time domain symbol category is the same.

[0134] In the above embodiment, the transmission power used is determined according to the symbol type for repeated PRACH transmission, so that the transmission power used on different time domain symbol categories in each repeated PRACH transmission is different, and the transmission power used on the same time domain symbol category is the same.

[0135] In combination with some embodiments of the second aspect, in some embodiments, determining the transmit power used for PRACH repetition on the first time domain unit based on the first transmit power and / or the second transmit power includes: determining the third time domain symbol type based on the second information, the third time domain symbol type being the time domain symbol type used by the terminal for PRACH repetition on the first time domain unit; determining to perform PRACH repetition on SBFD symbols, the transmit power used by the terminal for PRACH repetition on SBFD symbols being the first transmit power, and the third time domain symbol type being the SBFD symbol; or, determining to perform PRACH repetition on non-SBFD symbols, the transmit power used by the terminal for PRACH repetition on non-SBFD symbols being the second transmit power, and the third time domain symbol type being the non-SBFD symbol.

[0136] In the above embodiment, the third time domain symbol type may be determined by the time domain symbol type used by the terminal for repeated PRACH transmission on the first time domain unit, and the transmission power used for repeated PRACH transmission may be determined according to the third time domain symbol type.

[0137] In combination with some embodiments of the second aspect, in some embodiments, determining, based on the first information, the transmit power used for PRACH repetition transmission on the first time domain unit includes: determining, based on the first information, that the transmit power used for PRACH repetition transmission on SBFD symbols and the transmit power used for PRACH repetition transmission on non-SBFD symbols are both fourth transmit powers; and determining, based on the fourth transmit power, the transmit power used for PRACH repetition transmission on the first time domain unit.

[0138] In the above embodiment, the transmit power used for repeated PRACH transmission in the first time domain unit may be determined based on the fourth transmit power.

[0139] In combination with some embodiments of the second aspect, in some embodiments, based on the fourth transmit power, determining the transmit power used for repeated PRACH transmission on the first time domain unit includes: determining that the transmit power used for repeated PRACH transmission on the first time domain unit is the fourth transmit power.

[0140] In the above embodiment, the transmission power used for repeated PRACH transmission in the first time domain unit may be the fourth transmission power.

[0141] In combination with some embodiments of the second aspect, in some embodiments, determining the transmit power used for PRACH repetition on the first time domain unit based on the fourth transmit power includes: determining the third time domain symbol type based on the second information, the third time domain symbol type being the time domain symbol type used by the terminal for PRACH repetition on the first time domain unit; determining to perform PRACH repetition on SBFD symbols, the transmit power used by the terminal for PRACH repetition on SBFD symbols being the fourth transmit power, and the third time domain symbol type being the SBFD symbol; or, determining to perform PRACH repetition on non-SBFD symbols, the transmit power used by the terminal for PRACH repetition on non-SBFD symbols being the fourth transmit power, and the third time domain symbol type being the non-SBFD symbol.

[0142] In the above embodiment, the symbol for repeated PRACH transmission may be determined according to the third time domain symbol type, and the transmission power on the symbol may be determined to be the fourth transmission power.

[0143] In combination with some embodiments of the second aspect, in some embodiments, the transmission power used for each repeated PRACH transmission is the same.

[0144] In the above embodiment, the transmission power used for each PRACH repetition transmission may be the same.

[0145] In combination with some embodiments of the second aspect, in some embodiments, a transmission mode for performing repeated PRACH transmission on a first time domain unit is determined; the transmission mode includes any one of the following: a first transmission mode, indicating that SBFD symbols and non-SBFD symbols are used for repeated PRACH transmission on the first time domain unit; a second transmission mode, indicating that only SBFD symbols are used for repeated PRACH transmission on the first time domain unit; a third transmission mode, indicating that only non-SBFD symbols are used for repeated PRACH transmission on the first time domain unit.

[0146] In the above embodiment, a transmission mode for repeatedly transmitting the PRACH in the first time domain unit may be determined.

[0147] In combination with some embodiments of the second aspect, in some embodiments, determining the transmission mode for repeated PRACH transmission on the first time domain unit includes: based on the second information, determining that the transmission mode is the first transmission mode, the second transmission mode, or the third transmission mode.

[0148] In the above embodiment, the transmission mode of repeatedly transmitting the PRACH in the first time domain unit may be determined based on the second information.

[0149] In combination with some embodiments of the second aspect, in some embodiments, determining the transmission mode for repeated PRACH transmission on the first time domain unit includes: when the first condition is met, determining the transmission mode to be the first transmission mode; when the first condition is not met, determining the transmission mode to be the second transmission mode or the third transmission mode.

[0150] In the above embodiment, the transmission mode of repeatedly transmitting the PRACH in the first time domain unit may be determined by judging the first condition.

[0151] In combination with some embodiments of the second aspect, in some embodiments, the first condition is: the first preamble code group used for PRACH repeated transmission on SBFD symbols is the same as the second preamble code group used for PRACH repeated transmission on non-SBFD symbols, and the intersection of the first preamble code group and the second preamble code group is not empty; or the preamble codes included in the random access opportunities RO associated with the same synchronized broadcast block SSB on SBFD symbols and non-SBFD symbols have an intersection, and the intersection is not empty; or the first transmission power used for PRACH repeated transmission on SBFD symbols is the same as the second transmission power used for PRACH repeated transmission on non-SBFD symbols.

[0152] In the above-described embodiment, the first condition can be determined.

[0153] In combination with some embodiments of the second aspect, in some embodiments, the method also includes: when the transmission mode is the second transmission mode or the third transmission mode, determining that the symbol type used for PRACH repeated transmission on the first time domain unit is a symbol type that meets the preset conditions.

[0154] In the above embodiment, when the transmission mode is the second transmission mode or the third transmission mode, it can be determined that the symbol type that meets the preset condition is the symbol type used for PRACH repeated transmission in the first time domain unit.

[0155] In combination with some embodiments of the second aspect, in some embodiments, the first information includes a first parameter set and / or a second parameter set, the first parameter set is used to determine the preamble code group, the second parameter set is used to determine the transmit power, there is at least one first parameter in the first parameter set that has different values ​​on SBFD symbols and non-SBFD symbols, and there is at least one second parameter in the second parameter set that has different values ​​on SBFD symbols and non-SBFD symbols.

[0156] In the above embodiment, the preamble code group and / or transmission power used for repeated PRACH transmission in the first time domain unit may be determined by determining the first information.

[0157] In a third aspect, an embodiment of the present disclosure proposes a terminal, comprising a transceiver module for receiving first information sent by a network device; a processing module for determining, based on the first information, a preamble code group and / or transmission power used for repeated PRACH transmission on a first time domain unit, wherein the first time domain unit includes sub-band full-duplex SBFD symbols and non-SBFD symbols.

[0158] In a fourth aspect, an embodiment of the present disclosure proposes a network device, comprising a transceiver module for sending first information to a terminal; a determination module for determining, based on the first information, a preamble code group and / or transmission power used for repeated PRACH transmission on a first time domain unit, wherein the first time domain unit includes sub-band full-duplex SBFD symbols and non-SBFD symbols.

[0159] In a fifth aspect, an embodiment of the present disclosure proposes a communication device, which includes: one or more processors; wherein the one or more processors are used to call instructions to enable the communication device to execute any method in the first aspect, or any method in the second aspect.

[0160] In the sixth aspect, an embodiment of the present disclosure proposes a communication system, which includes: a terminal and a network device; wherein the terminal is configured to execute the method described in the first aspect and the optional implementation of the first aspect, and the network device is configured to execute the method described in the second aspect and the optional implementation of the second aspect.

[0161] In the seventh aspect, an embodiment of the present disclosure proposes a storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by the processor, the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect can be executed.

[0162] In an eighth aspect, an embodiment of the present disclosure proposes a computer program product, characterized in that it includes a computer program, and when the computer program is executed by a processor, it implements the method of any one of the embodiments of the first and second aspects of the present disclosure.

[0163] It is understandable that the above-mentioned terminals, network devices, communication devices, communication systems, and storage media are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods and will not be repeated here.

[0164] The present disclosure provides a communication method, communication device, communication system, and storage medium. In some embodiments, the terms "communication method," "information processing method," and "communication method" are interchangeable; the terms "terminal," "network device," and "communication device" are interchangeable; and the terms "information processing system" and "communication system" are interchangeable.

[0165] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0166] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0167] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0168] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0169] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0170] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

[0171] In the embodiments of the present disclosure, descriptions such as “at least one of A, B, C…”, “A and / or B and / or C…”, etc. include the situation where any one of A, B, C… exists alone, and also include any combination of any multiple of A, B, C…, and each situation can exist alone; for example, “at least one of A, B, C” includes the situation where A exists alone, B exists alone, C exists alone, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C; for example, A and / or B includes the situation where A exists alone, B exists alone, and the combination of A and B.

[0172] In some embodiments, descriptions such as "in one case A, in another case B," or "in response to one case A, in response to another case B," may include the following technical solutions depending on the situation: executing A independently of B (in some embodiments, A); executing B independently of A (in some embodiments, B); selectively executing A and B (in some embodiments, selecting between A and B); and executing both A and B (in some embodiments, A and B). The same applies when there are more branches, such as A, B, and C.

[0173] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0174] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0175] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0176] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0177] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0178] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0179] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0180] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, it can also be called device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, language such as "uplink" and "downlink" can also be replaced by language corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0181] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0182] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0183] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0184] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0185] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0186] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0187] In some embodiments, terms such as "synchronization signal (SS)", "synchronization signal block (SSB)", "reference signal (RS)", "pilot", and "pilot signal" can be used interchangeably.

[0188] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0189] In some embodiments, "obtain", "get", "obtain", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from a protocol, obtaining by self-processing, autonomous implementation, etc.

[0190] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0191] In some embodiments, "predetermined" and "preset" can be interpreted as pre-specified in a protocol, etc., or can be interpreted as a pre-set action performed by a device, etc.

[0192] In some embodiments, determining may be interpreted as judging, calculating, computing, processing, deriving, investigating, searching, looking up, retrieving, ascertaining, receiving, transmitting, inputting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, “assuming,” “expecting,” “considering,” broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, and the like, but is not limited thereto.

[0193] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0194] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0195] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0196] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0197] In some embodiments, data, information, etc. may be obtained after obtaining the user's consent. In order to solve the above problems, the present disclosure proposes a communication method, a communication device, a communication system, and a storage medium.

[0198] FIG1 is a schematic diagram illustrating an architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , a communication system 100 may include a terminal 101 and a network device 102 .

[0199] In some embodiments, the terminal includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0200] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0201] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0202] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0203] In some embodiments, a core network device may be a single device comprising one or more network elements, or may be a plurality of devices or a group of devices, each comprising all or part of one or more network elements. A network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0204] In some embodiments, the above-mentioned one or more network elements may include, for example, AMF, UPF, MME, etc., and may also include other network elements, such as Policy Control Function (PCF), Application Function (AF), Network Application Function (NAF), Application Layer Authentication and Key Management Anchor Function (AAnF), Bootstrapping Server Functionality (BSF), Session Management Function (SMF), etc.

[0205] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0206] The following embodiments of the present disclosure may be applied to the communication system 100 shown in Figure 1, or a portion thereof, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0207] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0208] In order to improve uplink (UL) coverage and throughput, related technologies will study subband full duplex (SBFD). Specifically, a carrier component (CC) is divided into multiple subbands (SBs) in the frequency domain on a downlink (DL) or flexible (F) symbol. The multiple SBs include a UL subband and at least one (one or two) DL subbands. The base station can send DL signals on the DL subband and receive UL signals on the UL subband at the same time. The DL or F symbol is a time division duplex uplink and downlink common configuration (TDD-UL-DL-ConfigCommon) or time division duplex uplink and downlink dedicated configuration (TDD-UL-DL-ConfigDedicated), or the DL or F symbol is a downlink control information format 2-0 (DCIformat2-0) indicated as DL or F symbol. When a symbol includes both DL subband and UL subband in the frequency domain, it can be called an SBFD symbol. Similarly, when a time slot includes multiple symbols including at least one SBFD symbol, the time slot can be called an SBFD time slot.

[0209] In addition, a guard band (GB) may exist between the DL subband and the UL subband. Through frequency domain isolation, interference between DL signals in the DL subband and UL signals in the UL subband can be reduced.

[0210] In SBFD symbols, GB and DL subbands are not available for UL transmission, while UL subbands are available for UL transmission. In SBFD symbols, the frequency domain range available for UL transmission is referred to as the UL available frequency domain range, and the frequency domain range unavailable for UL transmission is referred to as the UL unavailable frequency domain range. Based on the above analysis, the UL frequency domain ranges of non-SBFD symbols and SBFD symbols are different. The UL available frequency domain range is the UL frequency domain range on the CC. In SBFD symbols, the UL available frequency domain range on the UL BWP refers to the frequency domain range where the BWP overlaps with the UL available frequency domain range on the CC. Unless otherwise specified, the UL available frequency domain range referred to below refers to the UL available frequency domain range on the BWP.

[0211] When the UE is in idle state and initially accesses a cell, it measures information such as the received signal strength of the synchronization broadcast block (SynchronizationSignal / PhysicalBroadcastChannelBlock, SSB) beam and selects the optimal SSB beam. In the optimal SSB beam direction, the UE sends a Msg1 signal or a MsgA signal at the random access channel opportunity (RACH Occasion, RO) for random access. In addition, in other states, the UE can also send a Msg1 signal or a MsgA signal at the RO for random access. Random access includes contention-based random access (CBRA) and contention-free random access (CFRA). In CBRA, there are cases where multiple UEs use the same preamble sequence, that is, the Msg1 signals or MsgA signals of two UEs conflict, which will cause random access to fail.

[0212] In SBFD symbols, UEs can transmit uplink signals in the UL SB. Therefore, by configuring ROs in SBFD symbols, the network can increase the number of ROs compared to configuring ROs only in UL or F symbols. UEs that recognize SBFD symbol configuration (SBFD-aware UEs) can perform random access using ROs in SBFD symbols, reducing access latency and the probability of collisions between Msg1 or MsgA signals from different UEs in CBRA.

[0213] Considering that the interference conditions in SBFD symbols and non-SBFD symbols are significantly different, the PRACH transmission power parameters can be configured differently for SBFD and non-SBFD symbols. This enables SBFD-aware UEs to transmit with different powers in SBFD and non-SBFD symbols. For example, the following method can be used to enable SBFD-aware UEs to transmit with different powers in SBFD and non-SBFD symbols:

[0214] The PRACH transmit power on the SBFD symbols is reduced to reduce the UE-UE cross-link interference (UE-UE CLI) from the UE to other UEs.

[0215] Increase the PRACH transmit power on SBFD symbols to overcome the impact of base station-to-base station cross-link interference (gNB-gNB CLI) on PRACH transmission performance.

[0216] Random Access (RA) can be divided into 4-step random access (4-step RA) and 2-step random access (2-step RA) according to the number of steps in the RA process, and can be divided into CBRA and CFRA according to whether the Preamble used by the UE will conflict with the Preamble of other UEs.

[0217] In CBRA with 4-step RA type, the UE sends Message 1 (Msg1) and Message 3 (Msg3), and the gNB sends Message 2 (Msg2) and Message 4 (Msg4), completing random access in four steps. Msg1 is either Msg1 or MsgA. Furthermore, the gNB must configure the UE's preamble for Msg1 or MsgA in advance.

[0218] In CBRA with 2-step RA type, the UE sends MsgA and the gNB sends MsgB, completing random access in two steps. MsgA includes MsgA-PRACH and MsgA-PUSCH signals.

[0219] In CFRA with 4-step RA type, the UE sends Msg1 and the gNB sends Msg2, completing random access in two steps. Msg1 can be either Msg1 or MsgA. Furthermore, the gNB must configure the preamble that the UE can use with Msg1 or MsgA in advance.

[0220] In CFRA with 2-step RA type, the UE sends MsgA and the gNB sends MsgB, completing random access in two steps. MsgA includes MsgA-PRACH and MsgA-PUSCH signals. In addition, the gNB must pre-configure the Preamble and PUSCH resources that the UE can use for the MsgA signal.

[0221] The Preamble contained in the RO associated with an SSB can be divided into Group A and Group B. The use of Preamble Group A or Preamble Group B can be determined according to the first parameter set, and the transmit power of the PRACH can be determined according to the second parameter set.

[0222] Among them, the first parameter set includes at least one of the following: the actual load sum (payload) of Msg3; the actual load sum (payload) of MsgA; the maximum load of Msg3 when Msg1 uses Preamble group A (ra-Msg3SizeGroupA); the maximum load of MsgA-PUSCH when MsgA-PRACH uses Preamble group A (ra-MsgA-SizeGroupA); the maximum transmit power (PCMAX) of Msg1 and MsgA-PRACH; the target received power (preamble Received Target Power) of Msg1; the target received power (MsgA-preamble Received Target Power) of MsgA-PRACH; the transmit power difference between Msg3 and Msg1 (msg3-DeltaPreamble); the transmit power difference between MsgA-PUSCH and MsgA-PRACH (msgA-DeltaPreamble-r16); 4-step The difference in preamble transmit power between Preamble Group A and Preamble Group B in RA (RACH-ConfigCommon->messagePowerOffsetGroupB). The difference in preamble transmit power between Preamble Group A and Preamble Group B in 2-step RA (RACH-ConfigCommonTwoStepRA-r16->messagePowerOffsetGroupB).

[0223] Among them, the second parameter set includes at least one of the following: the target received power of Msg1 (preambleReceivedTargetPower); the target received power of MsgA-PRACH (MsgA-preambleReceivedTargetPower); the power ramping step of Msg1 (powerRampingStep); the power ramping step of MsgA-PRACH (msgA-PreamblePowerRampingStep-r16); the maximum transmit power of Msg1.

[0224] Related technologies have studied 4-step RA coverage enhancement and introduced PRACH with repetition. Specifically, the network configures the Reference Signal Receiving Power (RSRP) thresholds corresponding to 2, 4, and 8 repetitions, respectively: rsrp-ThresholdMsg1-RepetitionNum2-r18, rsrp-ThresholdMsg1-RepetitionNum4-r18, and rsrp-ThresholdMsg1-RepetitionNum8-r18.

[0225] For example, if the RSRP threshold of the reference signal measured by the UE is lower than the first threshold, such as rsrp-ThresholdMsg1-RepetitionNum8-r18, 8 repeated transmissions are used;

[0226] Otherwise, if the RSRP threshold of the reference signal measured by the UE is lower than the second threshold, such as rsrp-ThresholdMsg1-RepetitionNum4-r18, four repeated transmissions are used;

[0227] Otherwise, if the RSRP threshold of the reference signal measured by the UE is lower than the third threshold, such as rsrp-ThresholdMsg1-RepetitionNum2-r18, two repeated transmissions are used;

[0228] Otherwise, no repeated transmission is used.

[0229] Existing technologies can use differentiated power configuration parameters for PRACH transmission in SBFD and non-SBFD symbols to reduce UE-UE CLI interference to other UEs or overcome the impact of gNB-gNB CLI on PRACH transmission performance. However, this may lead to the following problems:

[0230] When RO can be used to transmit PRACH signals in both SBFD and non-SBFD symbols, the preamble groups determined on the SBFD and non-SBFD symbols are different, that is, the preambles available on the SBFD and non-SBFD symbols are different, which does not meet the requirement of using the same preamble for different repetitions.

[0231] The transmit power used by PRACH in SBFD and non-SBFD symbols is different, which does not meet the requirement that the transmit power of different repetitions is the same.

[0232] To address the above issues, the present disclosure proposes a communication method that can perform PRACH transmission on SBFD and non-SBFD symbols, and when using differentiated power configuration parameters, determines the transmission power of the preamble group and / or PRACH used in N repetitions on SBFD and non-SBFD symbols in PRACH with repetition.

[0233] The specific content of this method is as follows.

[0234] FIG2 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2 , the embodiment of the present disclosure relates to a communication method for a communication system 100, which may include a terminal 101 and a network device 102. The method includes:

[0235] Step 2101a: The network device sends first information to the terminal.

[0236] In some embodiments, the first information may be used to configure Msg1-PRACH, Msg3, MsgA-PRACH and MsgA-PUSCH.

[0237] In some embodiments, the first information includes a first parameter set and / or a second parameter set, wherein the first parameter set is used to determine the preamble code group, the second parameter set is used to determine the transmission power, there is at least one first parameter in the first parameter set that has different values ​​on SBFD symbols and non-SBFD symbols, and there is at least one second parameter in the second parameter set that has different values ​​on SBFD symbols and non-SBFD symbols.

[0238] For example, the first parameter set includes at least one of the following: the actual payload and (payload) of Msg3; the actual payload and (payload) of MsgA;

[0239] When Msg1 uses Preamble group A, the maximum payload of Msg3 (ra-Msg3SizeGroupA); when MsgA-PRACH uses Preamble group A, the maximum payload of MsgA-PUSCH (ra-MsgA-SizeGroupA); the maximum transmit power of Msg1 and MsgA-PRACH (PCMAX); the target received power of Msg1 (preamble Received Target Power); the target received power of MsgA-PRACH (MsgA-preamble Received Target Power); the transmit power difference between Msg3 and Msg1 (msg3-DeltaPreamble); the transmit power difference between MsgA-PUSCH and MsgA-PRACH (msgA-DeltaPreamble-r16); Preamble group A and Preamble Group A in 4-step RA The difference in preamble transmit power between preamble group A and preamble group B in 2-step RA (RACH-ConfigCommonTwoStepRA-r16->messagePowerOffsetGroupB).

[0240] For example, the second parameter set includes at least one of the following: the target received power of Msg1 (preambleReceivedTargetPower); the target received power of MsgA-PRACH (MsgA-preambleReceivedTargetPower); the power ramping step of Msg1 (powerRampingStep); the power ramping step of MsgA-PRACH (msgA-PreamblePowerRampingStep-r16); and the maximum transmit power of Msg1.

[0241] In some embodiments, the path loss can be determined based on the first information, the preamble code group on the SBFD symbol and the non-SBFD symbol can be determined in combination with the first parameter set and the path loss, and the PRACH transmission power on the SBFD symbol and the non-SBFD symbol can be determined in combination with the second parameter set and the path loss.

[0242] Among them, MsgA is the uplink signal sent by the UE in step 1 of the 2-step random access, including PRACH and PUSCH; Msg3 is the uplink signal sent by the UE in step 3 of the 4-step random access, including PUSCH.

[0243] Step 2101b: The network device sends second information to the terminal.

[0244] In some embodiments, for example, the second information may be used to instruct the terminal and / or network device to use the first preamble group or the second preamble group.

[0245] For example, the second information may be used to instruct the terminal and / or network device to use the first sending mode, the second sending mode, or the third sending mode.

[0246] For example, the second information may be used to determine the third time-domain symbol type.

[0247] For example, the second information may be used to determine the second time-domain symbol type.

[0248] For example, the second information may be used to instruct the terminal and / or the network device to use the first transmission power or the second transmission power.

[0249] In some embodiments, step 2101b is an optional step, and the network device may not send the second information to the terminal.

[0250] Step 2102: The terminal determines a preamble code group and / or transmission power used for repeated PRACH transmission in a first time domain unit.

[0251] In this solution, the terms "repeatedly sending PRACH", "PRACH repetition", "repeatedly sending PRACH", and "repeatedly transmitting PRCH" can be used interchangeably.

[0252] In this solution, terms such as send power, transmission power, and transmit power can be used interchangeably.

[0253] In some embodiments, a preamble group and / or transmit power used for PRACH repetitive transmission on a first time domain unit may be determined based on the first information, where the first time domain unit includes sub-band full-duplex SBFD symbols and non-SBFD symbols. For example, the preamble group used for PRACH repetitive transmission on the first time domain unit may be determined based on a first parameter set, and the transmit power used for PRACH repetitive transmission on the first time domain unit may be determined based on a second parameter set.

[0254] First aspect

[0255] In some embodiments, based on the first information, determining the preamble code group used for PRACH repeated transmission on the first time domain unit includes: based on the first information, determining that the first preamble code group is used for PRACH repeated transmission on the SBFD symbol and the second preamble code group is used for PRACH repeated transmission on the non-SBFD symbol, the first preamble code group and the second preamble code group are different; based on the first preamble code group and / or the second preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit.

[0256] In other words, according to the first information, the preamble code groups for PRACH repeated transmission on SBFD symbols and non-SBFD symbols can be different. It can be determined that the first preamble code group is used for PRACH repeated transmission on SBFD symbols, and the second preamble code group is used for PRACH repeated transmission on non-SBFD symbols. For example, the first preamble code group can be Preamble group #1, and the second preamble code group can be Preamble group #2.

[0257] Example 1 In some embodiments, the preamble code group used for PRACH repeated transmission on the first time domain unit can be determined based on the first preamble code group and / or the second preamble code group, including: based on the first preamble code group and / or the second preamble code group, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is: the preamble code group used for the first PRACH transmission in the PRACH repeated transmission.

[0258] In some embodiments, based on the first preamble code group and / or the second preamble code group, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the preamble code group used for the first PRACH transmission in the PRACH repeated transmission includes: determining the first time domain symbol type, the first time domain symbol type is the time domain symbol type of the time domain symbol of the first PRACH transmission in the PRACH repeated transmission; determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group, and the first time domain symbol type is an SBFD symbol; or, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the second preamble code group, and the first time domain symbol type is a non-SBFD symbol.

[0259] In other words, determining, based on the first preamble group and / or the second preamble group, that the preamble group used for PRACH repeated transmission on the first time domain unit is the preamble group used for the first PRACH transmission in the PRACH repeated transmission includes:

[0260] Determining a first time-domain symbol type for a first PRACH transmission in repeated PRACH transmissions;

[0261] When the first time domain symbol type is an SBFD symbol, determining that a preamble group used for PRACH repeated transmission on a first time domain unit is a first preamble group;

[0262] In a case where the first time domain symbol type is a non-SBFD symbol, it is determined that the preamble group used for PRACH repeated transmission on the first time domain unit is the second preamble group.

[0263] In other words, when PRACH repeated transmission is performed on the first time domain unit, the preamble code group used can be the same as the preamble code group used for the first PRACH transmission in the PRACH repeated transmission, that is, the preamble code group for the first PRACH transmission is the preamble code group used when PRACH repeated transmission is performed on the first time domain unit.

[0264] For example, when the first PRACH transmission is in an SBFD symbol, since the first preamble code group is used for PRACH repeated transmission on the SBFD symbol, it can be determined that the first preamble code group is also used for PRACH repeated transmission on the first time domain unit; and when the first PRACH transmission is in a non-SBFD symbol, since the second preamble code group is used for PRACH repeated transmission on the non-SBFD symbol, it can be determined that the second preamble code group is also used for PRACH repeated transmission on the first time domain unit.

[0265] Example 2

[0266] In some embodiments, the method also includes: receiving second information sent by the network device; based on the first preamble code group and / or the second preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit includes: based on the second information, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group or the second preamble code group.

[0267] In other words, the preamble code group used for PRACH repeated transmission on the first time domain unit can be determined based on the first preamble code group and / or the second preamble code group, including: based on the protocol agreement or the instruction of the network device, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group or the second preamble code group.

[0268] In some embodiments, based on the second information, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group or the second preamble code group includes: based on the second information, determining that the time domain symbol type that meets the preset conditions is the second time domain symbol type; determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group, and the second time domain symbol type is an SBFD symbol; or, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the second preamble code group, and the second time domain symbol type is a non-SBFD symbol. In other words, based on the protocol agreement or the indication of the network device, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group or the second preamble code group includes: based on the protocol agreement or the indication of the network device, determining the second time domain symbol type that meets the preset conditions; when the second time domain symbol type is an SBFD symbol, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group; when the second time domain symbol type is a non-SBFD symbol, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the second preamble code group.

[0269] For example, the preamble group to be used may be determined according to a protocol agreement, or may be determined according to an indication of the second information sent by the network device.

[0270] Optionally, the preset condition may be at least one of the following:

[0271] The PRACH transmit power is greater than the first transmit power threshold;

[0272] The PRACH transmit power is less than the second transmit power threshold;

[0273] The configured preamble target received power is greater than a first received power threshold;

[0274] The configured preamble target received power is less than the second received power threshold;

[0275] The configured PCMAX is greater than the first maximum transmit power threshold;

[0276] The configured PCMAX is smaller than the second maximum transmit power threshold.

[0277] That is, the time domain symbol that meets the preset conditions can be determined, and the symbol type of the time domain symbol that meets the preset conditions can be judged, and the symbol type of the time domain symbol that meets the preset conditions is determined to be the second time domain symbol type. For example, when the PRACH transmit power of the SBFD symbol is greater than the first transmit power threshold, it is determined that the preset conditions are met, then the symbol type of the time domain symbol that meets the preset conditions is the SBFD symbol type, and at this time the second time domain symbol type is the SBFD symbol type.

[0278] Optionally, the preset condition may also be at least one of the following:

[0279] PRACH transmit power is the largest;

[0280] PRACH transmit power is the minimum;

[0281] The configured leading target receiving power is the maximum;

[0282] The configured pilot target receiving power is minimum;

[0283] The configured PCMAX is the largest;

[0284] The configured PCMAX is minimum.

[0285] That is, the preamble code group used for PRACH retransmission in the first time domain unit may be at least one of the following:

[0286] The preamble group corresponding to the symbol with the highest PRACH transmit power;

[0287] The preamble group corresponding to the symbol with the smallest PRACH transmit power;

[0288] The preamble code group corresponding to the symbol with the largest configured preamble target received power;

[0289] The preamble code group corresponding to the symbol with the minimum configured preamble target received power;

[0290] The preamble group corresponding to the symbol with the largest configured PCMAX;

[0291] The preamble group corresponding to the symbol with the smallest configured PCMAX.

[0292] For example, according to the protocol agreement or network indication, the PRACH transmission power of the SBFD symbol is greater than the transmission power of the non-SBFD symbol. When the preset condition is that the PRACH transmission power is the maximum, the second time domain symbol type that meets the preset condition is the SBFD symbol. At this time, the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group. Example 3

[0293] In some embodiments, based on the first preamble code group and / or the second preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit includes: determining the first preamble code group, the first preamble code group is the preamble code group used for PRACH repeated transmission on the SBFD symbol; and determining the second preamble code group, the second preamble code group is the preamble code group used for PRACH repeated transmission on the non-SBFD symbol.

[0294] In other words, based on the first preamble code group and / or the second preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit includes: determining that the preamble code group used for PRACH repeated transmission on the SBFD symbol is the first preamble code group; and determining that the preamble code group used for PRACH repeated transmission on the non-SBFD symbol is the second preamble code group.

[0295] In some embodiments, the preambles used on different time-domain symbol categories in each PRACH repetition transmission are different, and the preambles used on the same time-domain symbol category are the same.

[0296] In other words, PRACH repeated transmission can be performed on both SBFD symbols and non-SBFD symbols. The first preamble code group is used when transmitting on SBFD symbols, and the second preamble code group is used when transmitting on non-SBFD symbols. At this time, the preamble codes used on the same symbols are the same, while the preamble codes on different symbols are different.

[0297] Example 4

[0298] In some embodiments, based on the first preamble group and / or the second preamble group, determining the preamble group used for PRACH repetition on the first time domain unit includes: determining the third time domain symbol type based on the second information, the third time domain symbol type being the time domain symbol type used by the terminal for PRACH repetition on the first time domain unit; determining to perform PRACH repetition on SBFD symbols, the preamble group used by the terminal for PRACH repetition on SBFD symbols being the first preamble group, and the third time domain symbol type being the SBFD symbol; or, determining to perform PRACH repetition on non-SBFD symbols, the preamble group used by the terminal for PRACH repetition on non-SBFD symbols being the second preamble group, and the third time domain symbol type being the non-SBFD symbol. In other words, based on the first preamble code group and / or the second preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit includes: determining the third time domain symbol type based on the protocol agreement or the instruction of the network device, the third time domain symbol type is the time domain symbol type used by the terminal for PRACH repeated transmission on the first time domain unit; in the case that the third time domain symbol type is an SBFD symbol, determining to perform PRA CH repeated transmission on the SBFD symbol, and the preamble code group used by the terminal for PRACH repeated transmission on the SBFD symbol is the first preamble code group; in the case that the third time domain symbol type is a non-SBFD symbol, determining to perform PRACH repeated transmission on the non-SBFD symbol, and the preamble code group used by the terminal for PRACH repeated transmission on the non-SBFD symbol is the second preamble code group.

[0299] In other words, based on the protocol agreement or the instructions of the network device, it can be determined that when the terminal performs PRACH retransmission on the first time domain unit, only one time domain symbol type is used, that is, the terminal can perform PRACH retransmission only on SBFD symbols, or only on non-SBFD symbols. At this time, the time domain symbol type for the terminal to perform PRACH retransmission is the third time domain symbol type. According to the type of the third time domain symbol, the preamble code group for PRACH retransmission can be determined. For example, when the third time domain symbol type is an SBFD symbol, the first preamble code group is used; when the third time domain symbol type is a non-SBFD symbol, the second preamble code group is used.

[0300] In the above embodiments, in the methods of Example 1, Example 2 and Example 4, the same preamble code group is used in multiple repeated transmissions.

[0301] Second aspect

[0302] In some embodiments, based on the first information, determining the preamble code group used for PRACH repeated transmission on the first time domain unit includes: based on the first information, determining a third preamble code group, the third preamble code group being the preamble code group used for PRACH repeated transmission on SBFD symbols and the preamble code group used for PRACH repeated transmission on non-SBFD symbols; based on the third preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit.

[0303] In other words, according to the first information, the preamble code group used for PRACH repeated transmission on the SBFD symbol and the preamble code group used for PRACH repeated transmission on the non-SBFD symbol can both be the third preamble code group, that is, the preamble code group for PRACH repeated transmission on the SBFD symbol and the non-SBFD symbol can be the same. For example, the third preamble code group used can be Preamble group #4.

[0304] Example 5

[0305] In some embodiments, based on the third preamble group, determining the preamble group used for PRACH repeated transmission on the first time domain unit includes: determining the preamble group used for PRACH repeated transmission on the first time domain unit to be the third preamble group.

[0306] In other words, the terminal may transmit the PRACH in both SBFD symbols and non-SBFD symbols. In this case, the preamble group used for repeated transmission of the PRACH in the first time domain unit may be the third preamble group.

[0307] Example 6

[0308] In some embodiments, based on the third preamble code group, determining the preamble code group used for PRACH repetition transmission on the first time domain unit includes: determining the third time domain symbol type based on the second information, the third time domain symbol type being the time domain symbol type used by the terminal for PRACH repetition transmission on the first time domain unit; determining to perform PRACH repetition transmission on SBFD symbols, the preamble code group used by the terminal for PRACH repetition transmission on SBFD symbols is the third preamble code group, and the third time domain symbol type is an SBFD symbol; or, determining to perform PRACH repetition transmission on non-SBFD symbols, the preamble code group used by the terminal for PRACH repetition transmission on non-SBFD symbols is the third preamble code group, and the third time domain symbol type is a non-SBFD symbol.

[0309] In other words, based on the third preamble code group, determining the preamble code group used for PRACH repeated transmission on the first time domain unit includes: determining the third time domain symbol type based on the protocol agreement or the instruction of the network device, the third time domain symbol type is the time domain symbol type used by the terminal for PRACH repeated transmission on the first time domain unit; in the case that the third time domain symbol type is an SBFD symbol, determining to perform PRACH repeated transmission on the SBFD symbol, and the preamble code group used by the terminal for PRACH repeated transmission on the SBFD symbol is the third preamble code group; in the case that the third time domain symbol type is a non-SBFD symbol, determining to perform PRACH repeated transmission on the non-SBFD symbol, and the preamble code group used by the terminal for PRACH repeated transmission on the non-SBFD symbol is the third preamble code group.

[0310] In other words, PRACH repetition transmission can be performed on only one time domain symbol type, that is, the third time domain symbol type. In this case, PRACH repetition transmission can be performed using the third preamble code group on the third time domain symbol type.

[0311] In some embodiments, the third time domain symbol type to be used can be determined according to protocol agreement or network device indication. For example, when the third time domain type is an SBFD symbol, it can be determined that the terminal performs repeated transmission of PRACH on the SBFD symbol and uses the third preamble code for repeated transmission.

[0312] In some embodiments, the above-mentioned Example 5 and Example 6 may be implemented by using the same preamble code group during each PRACH retransmission.

[0313] The third aspect

[0314] In some embodiments, based on the first information, determining the transmission power used for PRACH repeated transmission on the first time domain unit includes: based on the first information, determining that a first transmission power is used for PRACH repeated transmission on SBFD symbols and a second transmission power is used for PRACH repeated transmission on non-SBFD symbols, the first transmission power and the second transmission power are different; based on the first transmission power and / or the second transmission power, determining the transmission power used for PRACH repeated transmission on the first time domain unit.

[0315] In other words, according to the first information, the transmission power used for PRACH repeated transmission on SBFD symbols and non-SBFD symbols may be different, that is, the power used for PRACH repeated transmission on SBFD symbols is the first transmission power, and the power used for PRACH repeated transmission on non-SBFD symbols is the second transmission power.

[0316] Example 7

[0317] In some embodiments, based on the first transmit power and / or the second transmit power, the transmit power used for PRACH repeated transmission on the first time domain unit is determined to be: the transmit power used for the first PRACH transmission in the PRACH repeated transmission includes: determining the first time domain symbol type, the first time domain symbol type is the time domain symbol type of the time domain symbol in which the first PRACH transmission in the PRACH repeated transmission is located; determining that the transmit power used for PRACH repeated transmission on the first time domain unit is the first transmit power, and the first time domain symbol type is an SBFD symbol; or, determining that the transmit power used for PRACH repeated transmission on the first time domain unit is the second transmit power, and the first time domain symbol type is a non-SBFD symbol.

[0318] In other words, based on the first transmission power and / or the second transmission power, determining the transmission power used for PRACH repeated transmission on the first time domain unit includes: based on the first transmission power and / or the second transmission power, determining that the transmission power used for PRACH repeated transmission on the first time domain unit is: the transmission power used for the first PRACH transmission in the PRACH repeated transmission.

[0319] In some embodiments, based on the first transmission power and / or the second transmission power, the transmission power used for PRACH repeated transmission on the first time domain unit is determined to be: the transmission power used for the first PRACH transmission in the PRACH repeated transmission includes: determining the first time domain symbol type of the first PRACH transmission in the PRACH repeated transmission; when the first time domain symbol type is an SBFD symbol, determining that the transmission power used for PRACH repeated transmission on the first time domain unit is the first transmission power; when the first time domain symbol type is a non-SBFD symbol, determining that the transmission power used for PRACH repeated transmission on the first time domain unit is the second transmission power.

[0320] In other words, the transmission power used for the first PRACH transmission in the PRACH repeated transmission can be determined as the transmission power used for the PRACH repeated transmission on the first time domain unit. For example, when the first PRACH transmission in the PRACH repeated transmission is an SBFD symbol, the transmission power corresponding to the SBFD symbol can be determined as the transmission power used for the PRACH repeated transmission on the first time domain unit, that is, the first transmission power; for another example, when the first time domain symbol type of the first PRACH transmission in the PRACH repeated transmission is a non-SBFD symbol, the second transmission power can be used as the transmission power used for the PRACH repeated transmission on the first time domain unit.

[0321] In some embodiments, optionally, the power values ​​of the N repeated transmissions of the PRACH may be the same, for example, the N repeated transmissions of the PRACH both use the first transmission power and the second transmission power.

[0322] In some embodiments, optionally, the transmit power on SBFD symbols and non-SBFD symbols can be incremental. For example, the first PRA CH can use the first transmit power and the second transmit power, and the transmit power used by the second PRACH can be based on the first transmit power and the second transmit power, with the first step length and the second step length increased. The first step length can represent the incremental value of the SBFD symbol transmit power, and the second step length can represent the incremental value of the non-SBFD symbol transmit power. The first step length and the second step length can be equal or unequal.

[0323] For example, after PRACH transmission fails, when the beam is not switched, the next PRACH transmission power is increased by a step size, that is, the transmission power is increased; after PRACH transmission fails, when the beam is switched, the next PRACH transmission power remains unchanged, that is, the transmission power may not increase.

[0324] Example 8

[0325] In some embodiments, based on the first transmission power and / or the second transmission power, determining the transmission power used for PRACH repeated transmission on the first time domain unit includes: based on the protocol agreement or the indication of the network device, determining that the transmission power used for PRACH repeated transmission on the first time domain unit is the first transmission power or the second transmission power.

[0326] In some embodiments, based on the second information, determining that the transmission power used for repeated PRACH transmission on the first time domain unit is the first transmission power or the second transmission power includes: based on the second information, determining the second time domain symbol type that meets the preset conditions; determining that the transmission power used for repeated PRACH transmission on the first time domain unit is the first transmission power, and the second time domain symbol type is an SBFD symbol; or, determining that the transmission power used for repeated PRACH transmission on the first time domain unit is the second transmission power, and the second time domain symbol type is a non-SBFD symbol.

[0327] In other words, based on the protocol agreement or the indication of the network device, determining that the transmission power used for the repeated transmission of the PRACH on the first time domain unit is the first transmission power or the second transmission power includes: based on the protocol agreement or the indication of the network device, determining the second time domain symbol type that meets the preset conditions; when the second time domain symbol type is an SBFD symbol, determining that the transmission power used for the repeated transmission of the PRACH on the first time domain unit is the first transmission power; when the second time domain symbol type is a non-SBFD symbol, determining that the transmission power used for the repeated transmission of the PRACH on the first time domain unit is the second transmission power.

[0328] In some embodiments, the second time domain symbol type that meets the preset conditions can be determined based on a protocol agreement or an instruction from a network device. Optionally, the second time domain symbol type that meets the preset conditions can be determined by receiving an instruction from a network device through receiving second information.

[0329] Optionally, the preset condition may be at least one of the following:

[0330] The PRACH transmit power is greater than the first transmit power threshold;

[0331] The PRACH transmit power is less than the second transmit power threshold;

[0332] The configured preamble target received power is greater than a first received power threshold;

[0333] The configured preamble target received power is less than the second received power threshold;

[0334] The configured PCMAX is greater than the first maximum transmit power threshold;

[0335] The configured PCMAX is smaller than the second maximum transmit power threshold.

[0336] That is, the time domain symbol that meets the preset conditions can be determined, and the symbol type of the time domain symbol that meets the preset conditions can be judged, and the symbol type of the time domain symbol that meets the preset conditions is determined to be the second time domain symbol type. For example, when the PRACH transmit power of the SBFD symbol is greater than the first transmit power threshold, it is determined that the preset conditions are met, then the symbol type of the time domain symbol that meets the preset conditions is the SBFD symbol type, and at this time the second time domain symbol type is the SBFD symbol type.

[0337] Optionally, the preset condition may also be at least one of the following:

[0338] PRACH transmit power is the largest;

[0339] PRACH transmit power is the minimum;

[0340] The configured leading target receiving power is the maximum;

[0341] The configured pilot target receiving power is minimum;

[0342] The configured PCMAX is the largest;

[0343] The configured PCMAX is minimum.

[0344] That is, the preamble code group used for PRACH retransmission in the first time domain unit may be at least one of the following:

[0345] The preamble group corresponding to the symbol with the highest PRACH transmit power;

[0346] The preamble group corresponding to the symbol with the smallest PRACH transmit power;

[0347] The preamble code group corresponding to the symbol with the largest configured preamble target received power;

[0348] The preamble code group corresponding to the symbol with the minimum configured preamble target received power;

[0349] The preamble group corresponding to the symbol with the largest configured PCMAX;

[0350] The preamble group corresponding to the symbol with the smallest configured PCMAX.

[0351] For example, according to the protocol agreement or network indication, the PRACH transmission power of the SBFD symbol is greater than the transmission power of the non-SBFD symbol. When the preset condition is that the PRACH transmission power is maximum, the second time domain symbol type that meets the preset condition is the SBFD symbol. At this time, the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group.

[0352] Example 9

[0353] In some embodiments, determining the transmission power used for PRACH repeated transmission on the first time domain unit based on the first transmission power and / or the second transmission power includes: determining a third transmission power based on the first transmission power and / or the second transmission power; and determining that the transmission power used for PRACH repeated transmission on the first time domain unit is the third transmission power.

[0354] In other words, the first transmission power and the second transmission power can be processed to obtain a third transmission power, and the third transmission power can be determined as the transmission power used for PRACH repeated transmission on the first time domain unit, for example, Power#3 = (Power#1 + Power#2) / 2, that is, the average of the first transmission power and the second transmission power can be taken to obtain the third transmission power, or the third transmission power can be determined by other means, which is not limited in this disclosure.

[0355] Example 10

[0356] In some embodiments, based on the first transmission power and / or the second transmission power, determining the transmission power used for PRACH repeated transmission on the first time domain unit includes: determining that the transmission power used for PRACH repeated transmission on the SBFD symbol is the first transmission power; and determining that the transmission power used for PRACH repeated transmission on the non-SBFD symbol is the second transmission power.

[0357] In some embodiments, the method provided in Example 10 can achieve different transmission powers used on different time domain symbol categories in each PRACH repeated transmission, and the same transmission power used on the same time domain symbol category.

[0358] In other words, the terminal may perform PRACH repetitive transmission on both SBFD symbols and non-SBFD symbols. For example, the terminal may use a first transmission power for transmission on SBFD symbols and a second transmission power for transmission on non-SBFD symbols.

[0359] Example 11

[0360] In some embodiments, based on the first transmit power and / or the second transmit power, determining the transmit power used for PRACH repetition on the first time domain unit includes: determining the third time domain symbol type based on the second information, the third time domain symbol type being the time domain symbol type used by the terminal for PRACH repetition on the first time domain unit; determining to perform PRACH repetition on SBFD symbols, the transmit power used by the terminal for PRACH repetition on SBFD symbols being the first transmit power, and the third time domain symbol type being the SBFD symbol; or, determining to perform PRACH repetition on non-SBFD symbols, the transmit power used by the terminal for PRACH repetition on non-SBFD symbols being the second transmit power, and the third time domain symbol type being the non-SBFD symbol.

[0361] In other words, based on the first transmission power and / or the second transmission power, determining the transmission power used for PRACH repeated transmission on the first time domain unit includes: determining the third time domain symbol type based on the protocol agreement or the indication of the network device, the third time domain symbol type is the time domain symbol type used by the terminal for PRACH repeated transmission on the first time domain unit; when the third time domain symbol type is an SBFD symbol, determining to perform PRACH repeated transmission on the SBFD symbol, and the transmission power used by the terminal for PRACH repeated transmission on the SBFD symbol is the first transmission power; when the third time domain symbol type is a non-SBFD symbol, determining to perform PRA CH repeated transmission on the non-SBFD symbol, and the transmission power used by the terminal for PRACH repeated transmission on the non-SBFD symbol is the second transmission power.

[0362] In other words, the terminal can perform PRACH repetition transmission on only one time domain symbol. For example, the time domain symbol type for PRACH repetition transmission, i.e., the third time domain symbol type, can be determined according to a protocol agreement or a network device instruction. For example, when the third time domain symbol type is an SBFD symbol, the terminal can perform PRACH repetition transmission on the SBFD symbol and use the first transmission power for transmission.

[0363] In some embodiments, the above-mentioned Examples 7, 8, 9, and 11 can achieve the same transmission power used for each repeated PRACH transmission.

[0364] The fourth aspect

[0365] In some embodiments, based on the first information, determining the transmission power used for PRACH repeated transmission on the first time domain unit includes: based on the first information, determining that the transmission power used for PRACH repeated transmission on SBFD symbols and the transmission power used for PRACH repeated transmission on non-SBFD symbols are both fourth transmission powers; based on the fourth transmission power, determining the transmission power used for PRACH repeated transmission on the first time domain unit.

[0366] In other words, the transmission power used on the SBFD symbol and the non-SBFD symbol determined based on the first information may be the same, for example, may be the fourth transmission power.

[0367] Example 12

[0368] In some embodiments, determining the transmission power used for repeated PRACH transmission on the first time domain unit based on the fourth transmission power includes: determining the transmission power used for repeated PRACH transmission on the first time domain unit to be the fourth transmission power.

[0369] In other words, the terminal may perform PRACH repetitive transmission on both SBFD symbols and non-SBFD symbols. In this case, the transmission power used on the SBFD symbols and the non-SBFD symbols may be the same, that is, the fourth transmission power.

[0370] Example 13

[0371] In some embodiments, based on the fourth transmit power, determining the transmit power used for PRACH repetition on the first time domain unit includes: determining the third time domain symbol type based on the second information, the third time domain symbol type being the time domain symbol type used by the terminal for PRACH repetition on the first time domain unit; determining to perform PRACH repetition on SBFD symbols, the transmit power used by the terminal for PRACH repetition on SBFD symbols being the fourth transmit power, and the third time domain symbol type being the SBFD symbol; or, determining to perform PRACH repetition on non-SBFD symbols, the transmit power used by the terminal for PRACH repetition on non-SBFD symbols being the fourth transmit power, and the third time domain symbol type being the non-SBFD symbol.

[0372] In other words, based on the fourth transmission power, determining the transmission power used for PRACH repeated transmission on the first time domain unit includes: determining the third time domain symbol type based on the protocol agreement or the indication of the network device, the third time domain symbol type is the time domain symbol type used by the terminal for PRACH repeated transmission on the first time domain unit; when the third time domain symbol type is an SBFD symbol, determining to perform PRACH repeated transmission on the SBFD symbol, and the transmission power used by the terminal for PRACH repeated transmission on the SBFD symbol is the fourth transmission power; when the third time domain symbol type is a non-SBFD symbol, determining to perform PRACH repeated transmission on the non-SBFD symbol, and the transmission power used by the terminal for PRACH repeated transmission on the non-SBFD symbol is the fourth transmission power.

[0373] In other words, the terminal can perform PRACH repetition transmission on only one type of symbol. For example, the time domain symbol type for PRACH repetition transmission by the terminal, i.e., the third time domain symbol type, can be determined according to a protocol agreement or an instruction of a network device. For example, according to a protocol agreement, the third time domain symbol type can be determined to be an SBFD symbol. In this case, the terminal can perform PRACH repetition transmission on the SBFD symbol, and the transmission power used in this case can be the fourth transmission power.

[0374] Alternatively, according to the protocol agreement, the third time domain symbol type can be determined to be a non-SBFD symbol. At this time, the terminal can perform PRACH repeated transmission on the non-SBFD symbol. Since the transmission power determined based on the first information is the same, the transmission power used at this time can also be the fourth transmission power.

[0375] Optionally, the indication of the network device may be determined by receiving the second information, that is, the third time domain symbol type may be determined based on the second information.

[0376] In some embodiments, the above-mentioned Example 12 and Example 13 can achieve that the transmission power used for each PRACH repeated transmission is the same.

[0377] Plan 5

[0378] In some embodiments, a transmission mode for performing PRACH repetitive transmission on a first time domain unit may be determined. For example, the transmission mode may include any one of the following:

[0379] The first transmission mode indicates that the PRACH is repeatedly transmitted using SBFD symbols and non-SBFD symbols in the first time domain unit;

[0380] The second transmission mode indicates that only SBFD symbols are used for PRACH repeated transmission in the first time domain unit;

[0381] The third transmission mode indicates that only non-SBFD symbols are used to perform PRACH repeated transmission in the first time domain unit.

[0382] Example 14

[0383] In some embodiments, determining the transmission mode for performing PRACH repetitive transmission on the first time domain unit includes: determining the transmission mode to be the first transmission mode, the second transmission mode, or the third transmission mode based on the second information.

[0384] In other words, determining the transmission mode for performing PRACH repeated transmission on the first time domain unit includes: determining the transmission mode to be the first transmission mode, the second transmission mode, or the third transmission mode based on protocol agreement or instructions of the network device.

[0385] In other words, the transmission mode for repeated PRACH transmission can be determined by protocol default or network indication. For example, the transmission mode for multiple repeated transmissions can be uniformly determined, that is, the transmission modes for multiple repeated transmissions are the same. For example, the transmission mode of PRACH can be determined before the first PRACH transmission.

[0386] Optionally, the instruction of the network device may be determined by receiving the second information, that is, the sending mode may be determined based on the second information.

[0387] In some embodiments, determining the transmission mode for repeated PRACH transmission on the first time domain unit includes: when a first condition is met, determining the transmission mode to be the first transmission mode; when the first condition is not met, determining the transmission mode to be the second transmission mode or the third transmission mode.

[0388] Example 15

[0389] In some embodiments, the first condition may be that the first preamble group used for PRACH retransmission on SBFD symbols is the same as the second preamble group used for PRACH retransmission on non-SBFD symbols, and the intersection of the first preamble group and the second preamble group is not empty.

[0390] In other words, when it is determined based on the first information that the preamble code groups used for PRACH repeated transmission on SBFD symbols and non-SBFD symbols are the same, and the intersection of the same preamble code groups on SBFD symbols and non-SBFD symbols is not empty, it can be determined that the first condition is met. At this time, the transmission mode can be the first transmission mode. When the first condition is not met, it can be determined that the transmission mode is the second transmission mode or the third transmission mode.

[0391] In some embodiments, for example, when the transmission mode is the second transmission mode or the third transmission mode, the specific transmission mode to be adopted may be determined according to a protocol agreement or an instruction of a network device.

[0392] For example, when the transmission mode is the second transmission mode or the third transmission mode, it may be determined that the symbol type used for repeated transmission of the PRA CH in the first time domain unit is a symbol type that meets a preset condition.

[0393] In some embodiments, optionally, the preset condition may be at least one of the following:

[0394] The PRACH transmit power is greater than the first transmit power threshold;

[0395] The PRACH transmit power is less than the second transmit power threshold;

[0396] The configured preamble target received power is greater than a first received power threshold;

[0397] The configured preamble target received power is less than the second received power threshold;

[0398] The configured PCMAX is greater than the first maximum transmit power threshold;

[0399] The configured PCMAX is smaller than the second maximum transmit power threshold.

[0400] That is, the time domain symbol that meets the preset conditions can be determined, and the symbol type of the time domain symbol that meets the preset conditions can be judged, and the symbol type of the time domain symbol that meets the preset conditions is determined to be the second time domain symbol type. For example, when the PRACH transmit power of the SBFD symbol is greater than the first transmit power threshold, it is determined that the preset conditions are met, then the symbol type of the time domain symbol that meets the preset conditions is the SBFD symbol type, and at this time the second time domain symbol type is the SBFD symbol type.

[0401] Optionally, the preset condition may also be at least one of the following:

[0402] PRACH transmit power is the largest;

[0403] PRACH transmit power is the minimum;

[0404] The configured leading target receiving power is the maximum;

[0405] The configured pilot target receiving power is minimum;

[0406] The configured PCMAX is the largest;

[0407] The configured PCMAX is minimum.

[0408] That is, the preamble code group used for PRACH retransmission in the first time domain unit may be at least one of the following:

[0409] The preamble group corresponding to the symbol with the highest PRACH transmit power;

[0410] The preamble group corresponding to the symbol with the smallest PRACH transmit power;

[0411] The preamble code group corresponding to the symbol with the largest configured preamble target received power;

[0412] The preamble code group corresponding to the symbol with the minimum configured preamble target received power;

[0413] The preamble group corresponding to the symbol with the largest configured PCMAX;

[0414] The preamble group corresponding to the symbol with the smallest configured PCMAX.

[0415] For example, according to the protocol agreement or network indication, the PRACH transmission power of the SBFD symbol is greater than the transmission power of the non-SBFD symbol. When the preset condition is that the PRACH transmission power is maximum, the second time domain symbol type that meets the preset condition is the SBFD symbol. At this time, the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group.

[0416] Example 16

[0417] In some embodiments, the first condition may also be that the preamble codes included in the random access occasions RO associated with the same synchronization broadcast block SSB in the SBFD symbol and the non-SBFD symbol have an intersection, and the intersection is not empty.

[0418] In other words, when the preamble codes contained in the random access opportunities RO associated with the same synchronous broadcast block SSB on the SBFD symbol and the non-SBFD symbol have an intersection, and the intersection is not empty, it can be determined that the first condition is met. At this time, the transmission mode can be the first transmission mode. When the first condition is not met, it can be determined that the transmission mode is the second transmission mode or the third transmission mode.

[0419] In some embodiments, for example, when the transmission mode is the second transmission mode or the third transmission mode, the specific transmission mode to be adopted may be determined according to a protocol agreement or an instruction of a network device.

[0420] For example, when the transmission mode is the second transmission mode or the third transmission mode, it may be determined that the symbol type used for repeated transmission of the PRA CH in the first time domain unit is a symbol type that meets a preset condition.

[0421] In some embodiments,

[0422] Optionally, the preset condition may be at least one of the following:

[0423] The PRACH transmit power is greater than the first transmit power threshold;

[0424] The PRACH transmit power is less than the second transmit power threshold;

[0425] The configured preamble target received power is greater than a first received power threshold;

[0426] The configured preamble target received power is less than the second received power threshold;

[0427] The configured PCMAX is greater than the first maximum transmit power threshold;

[0428] The configured PCMAX is smaller than the second maximum transmit power threshold.

[0429] That is, the time domain symbol that meets the preset conditions can be determined, and the symbol type of the time domain symbol that meets the preset conditions can be judged, and the symbol type of the time domain symbol that meets the preset conditions is determined to be the second time domain symbol type. For example, when the PRACH transmit power of the SBFD symbol is greater than the first transmit power threshold, it is determined that the preset conditions are met, then the symbol type of the time domain symbol that meets the preset conditions is the SBFD symbol type, and at this time the second time domain symbol type is the SBFD symbol type.

[0430] Optionally, the preset condition may also be at least one of the following:

[0431] PRACH transmit power is the largest;

[0432] PRACH transmit power is the minimum;

[0433] The configured leading target receiving power is the maximum;

[0434] The configured pilot target receiving power is minimum;

[0435] The configured PCMAX is the largest;

[0436] The configured PCMAX is minimum.

[0437] That is, the preamble code group used for PRACH retransmission in the first time domain unit may be at least one of the following:

[0438] The preamble group corresponding to the symbol with the highest PRACH transmit power;

[0439] The preamble group corresponding to the symbol with the smallest PRACH transmit power;

[0440] The preamble code group corresponding to the symbol with the largest configured preamble target received power;

[0441] The preamble code group corresponding to the symbol with the minimum configured preamble target received power;

[0442] The preamble group corresponding to the symbol with the largest configured PCMAX;

[0443] The preamble group corresponding to the symbol with the smallest configured PCMAX.

[0444] For example, according to the protocol agreement or network indication, the PRACH transmission power of the SBFD symbol is greater than the transmission power of the non-SBFD symbol. When the preset condition is that the PRACH transmission power is maximum, the second time domain symbol type that meets the preset condition is the SBFD symbol. At this time, the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group.

[0445] Example 17

[0446] In some embodiments, the first condition may also be that a first transmission power used for repeated PRACH transmission on SBFD symbols is the same as a second transmission power used for repeated PRACH transmission on non-SBFD symbols.

[0447] In other words, based on the first information, when the transmission power used on the SBFD symbol and the non-SBFD symbol is the same, it can be determined that the first condition is met. At this time, the transmission mode can be the first transmission mode. When the first condition is not met, it can be determined that the transmission mode is the second transmission mode or the third transmission mode.

[0448] In some embodiments, for example, when the transmission mode is the second transmission mode or the third transmission mode, the specific transmission mode to be adopted may be determined according to a protocol agreement or an instruction of a network device.

[0449] For example, when the transmission mode is the second transmission mode or the third transmission mode, it may be determined that the symbol type used for repeated transmission of the PRA CH in the first time domain unit is a symbol type that meets a preset condition.

[0450] In some embodiments, optionally, the preset condition may be at least one of the following:

[0451] The PRACH transmit power is greater than the first transmit power threshold;

[0452] The PRACH transmit power is less than the second transmit power threshold;

[0453] The configured preamble target received power is greater than a first received power threshold;

[0454] The configured preamble target received power is less than the second received power threshold;

[0455] The configured PCMAX is greater than the first maximum transmit power threshold;

[0456] The configured PCMAX is smaller than the second maximum transmit power threshold.

[0457] That is, the time domain symbol that meets the preset conditions can be determined, and the symbol type of the time domain symbol that meets the preset conditions can be judged, and the symbol type of the time domain symbol that meets the preset conditions is determined to be the second time domain symbol type. For example, when the PRACH transmit power of the SBFD symbol is greater than the first transmit power threshold, it is determined that the preset conditions are met, then the symbol type of the time domain symbol that meets the preset conditions is the SBFD symbol type, and at this time the second time domain symbol type is the SBFD symbol type.

[0458] Optionally, the preset condition may also be at least one of the following:

[0459] PRACH transmit power is the largest;

[0460] PRACH transmit power is the minimum;

[0461] The configured leading target receiving power is the maximum;

[0462] The configured pilot target receiving power is minimum;

[0463] The configured PCMAX is the largest;

[0464] The configured PCMAX is minimum.

[0465] That is, the preamble code group used for PRACH retransmission in the first time domain unit may be at least one of the following:

[0466] The preamble group corresponding to the symbol with the highest PRACH transmit power;

[0467] The preamble group corresponding to the symbol with the smallest PRACH transmit power;

[0468] The preamble code group corresponding to the symbol with the largest configured preamble target received power;

[0469] The preamble code group corresponding to the symbol with the minimum configured preamble target received power;

[0470] The preamble group corresponding to the symbol with the largest configured PCMAX;

[0471] The preamble group corresponding to the symbol with the smallest configured PCMAX.

[0472] For example, according to the protocol agreement or network indication, the PRACH transmission power of the SBFD symbol is greater than the transmission power of the non-SBFD symbol. When the preset condition is that the PRACH transmission power is maximum, the second time domain symbol type that meets the preset condition is the SBFD symbol. At this time, the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group.

[0473] For example, according to the protocol agreement or network indication, the PRACH transmission power of the SBFD symbol is greater than the transmission power of the non-SBFD symbol. When the preset condition is that the PRACH transmission power is larger, the symbol type that meets the preset condition is the SBFD symbol. At this time, the transmission mode for repeated PRACH transmission on the first time domain unit is the second transmission mode, that is, repeated PRACH transmission is only performed on the SBFD symbol.

[0474] Step 2103: The network device determines the preamble code group and / or transmission power used for repeated PRACH transmission in the first time domain unit.

[0475] In some embodiments, the network device may determine a preamble group and / or transmission power used for PRACH repetition transmission in the first time domain unit.

[0476] Option 1

[0477] When the preamble code groups used on the SBFD symbol and the non-SBFD symbol determined according to the first information are different, namely the first preamble code group and the second preamble code group, the determination method is the same as the above step 2102, terminal side solution 1, and will not be repeated here.

[0478] Option 2

[0479] When the preamble code group used on the SBFD symbol and the non-SBFD symbol determined according to the first information is the same as the third preamble code group, its determination method is the same as the above step 2102, terminal side solution 2, and will not be repeated here.

[0480] Option 3

[0481] When the transmission powers used on SBFD symbols and non-SBFD symbols determined according to the first information are different, namely the first transmission power and the second transmission power, the determination method is the same as that in the above-mentioned step 2102, the terminal side solution three, and will not be repeated here.

[0482] Option 4

[0483] When the transmission power used on the SBFD symbol and the non-SBFD symbol determined according to the first information is the same as the third transmission power, its determination method is the same as that of the above-mentioned step 2102, terminal side solution four, and will not be repeated here.

[0484] In the embodiment of the present disclosure, the execution order of step 2103 and step 2102 is not limited, and the execution order of step 2103 and step 2101 is not limited.

[0485] The embodiments of the present disclosure may include at least one of steps 2101a to 2103. For example, step 2102 may be implemented as an independent embodiment, steps 2101a+2101b+2102+2103 may be implemented as an independent embodiment, and steps 2101a+2102+2103 may be implemented as an independent embodiment, but are not limited thereto.

[0486] Figure 3a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in Figure 3a, the embodiment of the present disclosure relates to a communication method for a terminal, the method comprising:

[0487] Step 3101: Receive first information.

[0488] The optional implementation of step 3101 can refer to the optional implementation of step 2101a in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0489] In some embodiments, the terminal 101 receives the first information sent by the network device 102, but is not limited thereto and may also receive the first information sent by other entities.

[0490] In some embodiments, terminal 101 obtains first information specified by a protocol.

[0491] In some embodiments, terminal 101 obtains the first information from upper layer(s).

[0492] In some embodiments, the terminal 101 performs processing to obtain the first information.

[0493] Step 3102: Receive the second information.

[0494] The optional implementation of step 3102 can refer to the optional implementation of step 2101b in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0495] In some embodiments, the terminal 101 receives the second information sent by the network device 102, but is not limited thereto and may also receive the second information sent by other entities.

[0496] In some embodiments, terminal 101 obtains second information specified by the protocol.

[0497] In some embodiments, terminal 101 obtains the second information from upper layer(s).

[0498] In some embodiments, terminal 101 performs processing to obtain the second information.

[0499] In some embodiments, step 3102 is an optional step, and the network device may not send the second information to the terminal.

[0500] Step 3103: Determine the preamble code group and / or transmission power used for PRACH repeated transmission in the first time domain unit.

[0501] The optional implementation of step 3103 can refer to the optional implementation of step 2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0502] Figure 3b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in Figure 3b, the embodiment of the present disclosure relates to a communication method for a terminal, the method comprising:

[0503] Step 3201: Receive first information.

[0504] The optional implementation of step 3201 can refer to step 2102a of Figure 2, the optional implementation of step 3101 of Figure 3a, and other related parts in the embodiments involved in Figures 2 and 3a, which will not be repeated here.

[0505] Step 3202: Determine the preamble code group and / or transmission power used for PRACH repetitive transmission in the first time domain unit.

[0506] The optional implementation of step 3202 can refer to the optional implementation of step 2102 in Figure 2, step 3103 in Figure 3a, and other related parts in the embodiments involved in Figures 2 and 3a, which will not be repeated here.

[0507] FIG4a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4a, the embodiment of the present disclosure relates to a communication method for a network device, the method comprising:

[0508] Step 4101: Send the first message.

[0509] The optional implementation of step 4101 can refer to the optional implementation of step 2101a in Figure 2, step 3101 in Figure 3a, step 3201 in Figure 3b, and other related parts in the embodiments involved in Figures 2, 3a, and 3b, which will not be repeated here.

[0510] In some embodiments, terminal 101 may receive first information.

[0511] In some embodiments, the network device 102 may send the first information to the terminal 101 , but is not limited thereto. The network device 102 may also send the first information to other entities.

[0512] Step 4102: Send the second message.

[0513] The optional implementation of step 4102 can refer to step 2101b of Figure 2, the optional implementation of step 3102 of Figure 3a, and other related parts in the embodiments involved in Figures 2 and 3a, which will not be repeated here.

[0514] In some embodiments, terminal 101 may receive second information.

[0515] In some embodiments, the network device 102 may send the second information to the terminal 101 , but is not limited thereto. The network device 102 may also send the second information to other entities.

[0516] In some embodiments, step 4102 is an optional step, and the network device may not send the second information to the terminal.

[0517] Step 4103: Determine the preamble code group and / or transmission power used for PRACH repeated transmission in the first time domain unit.

[0518] The optional implementation of step 4103 can refer to the optional implementation of step 2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0519] FIG4b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4b, the embodiment of the present disclosure relates to a communication method for a network device, the method comprising:

[0520] Step 4201: Send the first message.

[0521] The optional implementation methods of step 4201 can be found in step 2101a of Figure 2, step 3101 of Figure 3a, step 3201 of Figure 3b, and the optional implementation methods of step 4101 of Figure 4a, as well as other related parts in the embodiments involved in Figures 2, 3a, 3b, and 4a, which will not be repeated here.

[0522] Step 4202: Determine the preamble code group and / or transmission power used for PRACH repeated transmission in the first time domain unit.

[0523] The optional implementation of step 4201 can be found in step 2103 of Figure 2, step 3103 of Figure 3a, step 3202 of Figure 3b, and the optional implementation of step 4103 of Figure 4a, as well as other related parts in the embodiments involved in Figures 2, 3a, 3b, and 4a, which will not be repeated here.

[0524] Figure 5 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in Figure 5, the embodiment of the present disclosure relates to a communication method for a communication system including a terminal and a network device. The method includes:

[0525] Step 5101: The network device sends first information to the terminal device.

[0526] The optional implementation methods of step 5101 can be found in step 2101a of Figure 2, step 3101 of Figure 3, step 3201 of Figure 3b, step 4101 of Figure 4a, step 4201 of Figure 4b, and other related parts in the embodiments involved in Figures 2, 3, and 4, which will not be repeated here.

[0527] Step 5102: The network device and / or the terminal determines a preamble code group and / or a transmission power used for repeated PRACH transmission in a first time domain unit.

[0528] For the optional implementation of step 5101, please refer to steps 2102 and 2103 of Figure 2, step 3103 of Figure 3a, step 3202 of Figure 3b, step 4103 of Figure 4a, and the optional implementation of step 4202 of Figure 4b, as well as other related parts in the embodiments involved in Figures 2, 3a, 3b, 4a, and 4b, which will not be repeated here.

[0529] The following is an exemplary introduction to the above method.

[0530] The method shown in the embodiment of the present disclosure relates to a PRACH repeated transmission method.

[0531] Subband full duplex-aware user equipment (SBFD aware UE) can determine the transmission power of the preamble group and / or PRACH used in N repeated transmissions on SBFD and non-SBFD symbols in PRACH with repetition using the following method. The details of the method are as follows.

[0532] Solution 1: The preamble groups on the SBFD and non-SBFD symbols determined by the UE according to the first parameter set may be different, namely, Preamble group #1 and Preamble group #2.

[0533] Method 1: The UE can transmit PRACH on two time domain symbol categories, SBFD and non-SBFD, and use the same Preamble group #3 on SBFD and non-SBFD symbols. Specifically, Preamble group #3 can be determined according to the following method.

[0534] 1) Preamble group #3 is the preamble group used for the first PRACH transmission in the PRACH repetition.

[0535] Optionally, when the first PRACH transmission is in an SBFD symbol, Preamble group #3 is Preamble group #1; otherwise, Preamble group #3 is Preamble group #2.

[0536] 2) Preamble group #3 may be determined to be Preamble Group A or Preamble Group B according to protocol default and / or high-layer configuration and / or dynamic indication.

[0537] Optionally, Preamble group #3 is a Preamble Group corresponding to a time domain symbol category having a larger or smaller PRACH transmit power and / or a configured preamble sequence target received power (preambleReceivedTargetPower) and / or a configured PCMAX.

[0538] Method 2: The UE can transmit PRACH on two time domain symbol categories, SBFD and non-SBFD, and use different preamble groups on SBFD and non-SBFD symbols, that is, Preamble group #1 and Preamble group #2 can be used on SBFD and non-SBFD symbols respectively.

[0539] Method 3: When the UE can only transmit PRACH on either SBFD or non-SBFD symbols, the time-domain symbol category to be used can be determined based on protocol defaults, / or higher-layer configuration, and / or dynamic indication. For example, when the UE can only transmit PRACH on SBFD symbols, Preamble group #1 is used; otherwise, Preamble group #2 is used.

[0540] Optionally, in the above method 1 and method 3, the N repetitions use the same preamble; while in solution 2, the N repetitions use different preambles on SBFD and non-SBFD symbols, and the same preamble on the same time domain symbol category.

[0541] In an embodiment, it may be assumed that the number of repeated transmissions of the PRACH is N times.

[0542] When N is 4, PRACH transmission is shown in Figure 6. Examples of Method 1 and Method 2 in Solution 1 are as follows:

[0543] Method 1 1): In case 1, the first PRACH transmission is in a UL symbol, i.e., a non-SBFD symbol. Therefore, Preamble group #3 of the four repetitions in case 1 is Preamble group #2. In case 2, the first PRACH transmission is in a SBFD symbol. Therefore, Preamble group #3 of the four repetitions in case 2 is Preamble group #1.

[0544] Method 2: In Example 1 and Example 2, use Preamble group #1 and Preamble group #2 on SBFD and non-SBFD symbols respectively.

[0545] When N is 4, PRACH transmission is shown in Figure 7. An example of method 3 in solution 1 is as follows:

[0546] Method 3: In case 3, transmission can only be performed in non-SBFD symbols, so the four repetitions are all in non-SBFD symbols.

[0547] In Method 1 above, an SBFD-aware UE can transmit PRACH on both SBFD and non-SBFD time-domain symbol categories, reducing the latency of N repetition transmissions. Method 1, step 1), can determine the preamble group to use based on the first repetition transmission (i.e., the first PRACH transmission) in the N repetitions, reducing signaling overhead. In Method 1, step 2), determining the preamble group to use based on protocol defaults, higher-layer configuration, and / or dynamic indication allows for more flexible use of preamble groups.

[0548] In Method 2 above, SBFD-aware UEs can transmit PRACH on both SBFD and non-SBFD time-domain symbol categories, reducing PRACH transmission latency. Using different preamble groups on different time-domain symbol categories eliminates the need for additional signaling, reducing signaling overhead.

[0549] Considering that different preamble groups contain different preambles, different preambles are used on different time-domain symbol categories, which may lead to a decrease in preamble merging detection performance on the base station side.

[0550] In method 3 above, the UE can only transmit PRACH on one type of symbol: SBFD or non-SBFD. This prevents the impact of different interference conditions on the SBFD and non-SBFD symbols on the combining performance of the N repetitions on the base station side. However, it may negatively impact the transmission latency of the N repetitions.

[0551] Solution 2: The preamble group on the SBFD and non-SBFD symbols determined by the UE according to the first parameter set is the same, that is, preamble group #4.

[0552] Method 1: The UE can transmit PRACH on two time domain symbol categories: SBFD and non-SBFD, and use Preamble group #4 on SBFD and non-SBFD symbols.

[0553] Method 2: When the UE can only transmit PRACH on one type of symbol, SBFD or non-SBFD, use Preamble group #4.

[0554] Optionally, the UE may determine the time domain symbol category to be used according to protocol default and / or high-layer configuration and / or dynamic indication.

[0555] In the above methods 1 and 2, the same preamble can be used for N repetitions.

[0556] Method 1: SBFD-aware UEs in Method 1 can transmit PRACH in both SBFD and non-SBFD time-domain symbol categories, reducing the latency of N repetition transmissions. Furthermore, there is no need to indicate the preamble group to use, reducing signaling overhead.

[0557] Similar to Method 1 of Solution 1, in Method 1 of Solution 2, SBFD-aware UEs can use the same preamble group on both SBFD and non-SBFD time-domain symbol categories. Furthermore, SBFD-aware UEs can use the same preamble on both SBFD and non-SBFD time-domain symbol categories, ensuring the requirement that the same preamble be used for N transmissions in the existing PRACH with repetition.

[0558] Method 2: Similar to Method 3 of Solution 1, in Method 2 of Solution 2, SBFD-aware UE can transmit PRACH on only one type of symbol: SBFD or non-SBFD. Furthermore, SBFD-aware UE can use the same preamble on one type of symbol: SBFD or non-SBFD, thus ensuring the requirement that the same preamble must be used for N transmissions in the existing PRACH with repetition.

[0559] Similar to Method 3 in Solution 1, in Method 2 in Solution 2, the UE can only transmit PRACH on one type of symbol: SBFD or non-SBFD. This prevents the impact of different interference conditions in SBFD and non-SBFD symbols on the performance of combining N repetitions on the base station side. However, this may negatively impact the transmission latency of the N repetitions.

[0560] Optionally, in method 1 and method 3 in solution 1, and method 1 and method 2 in solution 2, the N repetitions use the same preamble; in method 2 in solution 1, the N repetitions use different preambles on SBFD and non-SBFD symbols, and the same preamble on the same time domain symbol category.

[0561] Solution 3: When the PRACH transmit powers on the SBFD and non-SBFD symbols determined by the UE according to the second parameter set are different, namely Power#1 and Power#2 respectively, the transmit power used by different repetitions in the PRACH repetition is Power#3.

[0562] Method 1: PRACH can be transmitted on two time domain symbol types: SBFD and non-SBFD. The transmit power used in different repetitions is the same.

[0563] 1) Power#3 may be the transmit power used for the first PRACH transmission in a PRACH repetition.

[0564] Optionally, when the first PRACH transmission is in an SBFD symbol, Power#3 is Power#1; otherwise, Power#3 is Power#2.

[0565] 2) Power#3 may be determined to be Power#1 or Power#2 according to protocol default and / or high-layer configuration and / or dynamic indication.

[0566] 3) Determine Power#3 based on Power#1 and / or Power#2, such as Power#3 being (Power#1+Power#2) / 2.

[0567] Method 2: PRACH can be transmitted on two time-domain symbol categories: SBFD and non-SBFD. Power#1 is used on SBFD symbols, that is, Power#3 is equal to Power#1; Power#2 is used on non-SBFD symbols, that is, Power#3 is equal to Power#2.

[0568] In the above method 2, different PRACH transmit powers are used on different time-domain symbol categories, which may cause a certain impact on the preamble combination detection performance on the base station side.

[0569] Method 3: When PRACH can only be transmitted on one of the SBFD and non-SBFD symbols, the time-domain symbol type to be used can be determined based on protocol defaults, / or higher-layer configuration, and / or dynamic indication. For example, when PRACH can only be transmitted on SBFD symbols, Power#1 is used; otherwise, Power#2 is used.

[0570] In the above-mentioned method 1, the SBFD aware UE can transmit PRACH on two time domain symbol categories, SBFD and non-SBFD, which can reduce the delay of N repetition transmissions. Among them, 1) in method 1 can determine the transmit power Power#3 to be used based on the first repetition transmission (i.e., the first PRACH transmission) in the N repetitions, which can reduce signaling overhead. 2) in method 1 can determine the transmit power Power#3 to be used based on the protocol default and / or high-level configuration and / or dynamic indication, which can use the transmit power more flexibly. 3) in method 1 can jointly determine Power#3 based on the PRACH transmit power Power#1 and Power#2 on the SBFD and non-SBFD symbols, which comprehensively considers the power requirements of PRACH when transmitting on the two symbols.

[0571] In Method 2 above, SBFD-aware UEs can transmit PRACH on both SBFD and non-SBFD time-domain symbol classes, reducing PRACH transmission latency. Using different transmit powers for different symbols eliminates the need for additional signaling, reducing signaling overhead. This effectively meets PRACH transmit power requirements across different time-domain symbol classes.

[0572] In method 3 above, the UE can only transmit PRACH on one type of symbol: SBFD or non-SBFD. This prevents the impact of different interference conditions on the SBFD and non-SBFD symbols on the combining performance of the N repetitions on the base station side. However, it may negatively impact the transmission latency of the N repetitions.

[0573] Solution 4: The PRACH transmit power on the SBFD and non-SBFD symbols determined by the UE according to the second parameter set is the same, and the transmit power used by different repetitions in the PRACH repetition is Power#4.

[0574] Method 1: PRACH can be transmitted on two time-domain symbol types: SBFD and non-SBFD, and Power#4 can be used on SBFD and non-SBFD symbols.

[0575] Method 2: When PRACH can only be transmitted on one type of SBFD and non-SBFD symbols, use Power#4. For example, the time domain symbol type to be used can be determined based on protocol default and / or high-layer configuration and / or dynamic indication.

[0576] Optionally, in the above schemes 1 to 4, the symbols where the UE transmits PRACH include 3 options: Option 1: in SBFD and non-SBFD symbols; Option 2: only in non-SBFD symbols; Option 3: only in SBFD symbols.

[0577] Solution 5: The Option used by the UE can be determined according to one of the following methods.

[0578] Method 1: The use of Option 1, Option 2, or Option 3 can be determined through protocol default and / or high-layer configuration and / or dynamic indication.

[0579] Method 2. When the preamble group determined according to the first parameter set on the SBFD and non-SBFD symbols is the same, and the intersection of the preambles in the same preamble group on the SBFD and non-SBFD symbols is not empty, the UE uses Option 1; otherwise, the UE can only use Option 2 or Option 3, and Option 2 or Option 3 can be determined according to the protocol default and / or high-layer configuration and / or dynamic indication.

[0580] Method 3. If the Preambles contained in the ROs associated with the same SSB on SBFD and non-SBFD symbols are the same and have an intersection, and the intersection is not empty, the UE uses Option 1; otherwise, the UE can only use Option 2 or Option 3, which can be determined according to the protocol default and / or high-layer configuration and / or dynamic indication.

[0581] Method 4. If the PRACH transmit power determined according to the second parameter set on SBFD and non-SBFD symbols is the same, the UE uses Option 1; otherwise, the UE can only use Option 2 or Option 3, and Option 2 or Option 3 can be determined according to the protocol default and / or high-layer configuration and / or dynamic indication.

[0582] For any of the above methods 1, 2, and 3, when PRACH can only be transmitted on one category of SBFD and non-SBFD symbols, optionally, the time domain symbol category used can be a symbol with a larger or smaller PRACH transmit power and / or configured preambleReceivedTargetPower and / or configured PCMAX; optionally, at least one parameter in the first parameter set has different values ​​on SBFD and non-SBFD symbols; optionally, at least one parameter in the second parameter set has different values ​​on SBFD and non-SBFD symbols.

[0583] In the above method 1, the symbol where the UE transmits the PRACH is determined by protocol default and / or high-layer configuration and / or dynamic indication, which can reduce the complexity of UE detection processing.

[0584] In the above-mentioned method 2, if the preamble group determined according to the first parameter set on the SBFD and non-SBFD symbols is the same, and the intersection of the preambles in the same preamble group on the SBFD and non-SBFD symbols is not empty, the UE uses Option 1, that is, method 1 of solution 2. In other cases, method 3 of solution 1 or method 2 of solution 2 is used. Under this constraint, method 1 of solution 1 and method 2 of solution 1 cannot be used. Compared with method 1 of solution 5, this method can reduce certain signaling overhead and reduce the difficulty of processing when the preamble groups determined according to the first parameter set on SBFD and non-SBFD symbols are different.

[0585] In Method 3 above, if the preamble contained in the RO associated with the same SSB on SBFD and non-SBFD symbols is the same, the UE uses Option 1, i.e., Solution 1, Method 1, Solution 1, Method 2, or Solution 2, Method 1. In other cases, Solution 1, Method 3, or Solution 2, Method 2, is used. Compared to Solution 5, Method 1, this method reduces signaling overhead. Compared to Solution 5, Method 3, it offers a more comprehensive range of available solutions.

[0586] In Method 4 above, if the PRACH transmit power determined by the second parameter set on SBFD and non-SBFD symbols is the same, the UE uses Option 1, which means Option 2 of Solution 4 can be used. In other cases, Option 3, Method 3, is used. Under this constraint, Option 3, Method 1, Option 3, and Option 4, Method 1 cannot be used. Compared to Option 5, Method 1, this method can reduce signaling overhead.

[0587] Among the four methods in Solution 5, when PRACH can only be transmitted on one of the SBFD and non-SBFD symbol types, the time-domain symbol type to be used can be determined based on explicit or implicit indication. Explicit indication provides greater flexibility, while implicit indication reduces overhead. One implementation of implicit indication is to determine the time-domain symbol type to be used based on the symbol with the larger or smaller PRACH transmit power, the configured preambleReceivedTargetPower, and / or the configured PCMAX.

[0588] In the above-mentioned solution 1 and solution 2, the UE determines that the preamble groups on the SBFD and non-SBFD symbols are different or the same based on the first parameter set. Optionally, at least one parameter in the first parameter set has different values ​​on the SBFD and non-SBFD symbols.

[0589] In the above-mentioned scheme 3 and scheme 4, the PRACH transmit power on the SBFD and non-SBFD symbols determined by the UE according to the second parameter set is different or the same. Optionally, at least one parameter in the second parameter set has different values ​​on the SBFD and non-SBFD symbols.

[0590] Among them, the first parameter set includes at least one of the following: the actual load sum (payload) of Msg3; the actual load sum (payload) of MsgA; the maximum load of Msg3 when Msg1 uses Preamble group A (ra-Msg3SizeGroupA); the maximum load of MsgA-PUSCH when MsgA-PRACH uses Preamble group A (ra-MsgA-SizeGroupA); the maximum transmit power (PCMAX) of Msg1 and MsgA-PRACH; the target received power (preamble Received Target Power) of Msg1; the target received power (MsgA-preamble Received Target Power) of MsgA-PRACH; the transmit power difference between Msg3 and Msg1 (msg3-DeltaPreamble); the transmit power difference between MsgA-PUSCH and MsgA-PRACH (msgA-DeltaPreamble-r16); 4-step The difference in preamble transmit power between Preamble Group A and Preamble Group B in RA (RACH-ConfigCommon->messagePowerOffsetGroupB). The difference in preamble transmit power between Preamble Group A and Preamble Group B in 2-step RA (RACH-ConfigCommonTwoStepRA-r16->messagePowerOffsetGroupB).

[0591] Among them, the second parameter set includes at least one of the following: the target received power of Msg1 (preambleReceivedTargetPower); the target received power of MsgA-PRACH (MsgA-preambleReceivedTargetPower); the power ramping step of Msg1 (powerRampingStep); the power ramping step of MsgA-PRACH (msgA-PreamblePowerRampingStep-r16); the maximum transmit power of Msg1.

[0592] In the above-mentioned solution 1 and solution 2, the UE determines the path loss according to the first information, and determines the preamble code groups on the SBFD symbol and the non-SBFD symbol in combination with the first parameter set and the path loss.

[0593] In the above-mentioned solutions 3 and 4, the UE determines the path loss according to the first information, and determines the PRACH transmission power on the SBFD symbols and the non-SBFD symbols in combination with the second parameter set and the path loss.

[0594] MSGA is the uplink signal sent by the UE in step 1 of a 2-step RA, including PRACH and PUSCH, which are called MsgA-PRACH and MsgA-PUSCH respectively.

[0595] Msg1 is the uplink signal sent by the UE in step 1 of the 4-step RA, including PRACH;

[0596] Msg3 is the uplink signal sent by the UE in step 3 of the 4-step RA, including the PUSCH.

[0597] The base station may determine the transmission power of the Preamble group and / or PRACH used by multiple repetitions on SBFD and non-SBFD symbols in PRACH with repetition by the following method.

[0598] Solution 1: The base station may determine different Preamble groups on the SBFD and non-SBFD symbols according to the first parameter set, namely Preamble group #1 and Preamble group #2. For the specific method, refer to Solution 1 on the terminal side and will not be repeated here.

[0599] Solution 2: The Preamble group on the SBFD and non-SBFD symbols determined according to the first parameter set is the same, which is Preamble group #4. For the specific method, please refer to Solution 2 on the terminal side and will not be repeated here.

[0600] Solution 3: When the PRACH transmit powers on the SBFD and non-SBFD symbols determined by the second parameter set are different, namely Power#1 and Power#2 respectively, the transmit power used by different repetitions in the PRACH repetition is Power#3. For the specific method, please refer to Solution 3 on the terminal side and will not be repeated here.

[0601] Solution 4: When the PRACH transmit power on the SBFD and non-SBFD symbols determined according to the second parameter set is the same, namely Power#1 and Power#2, different repetitions in the PRACH repetition use transmit power Power#4. For the specific method, refer to Solution 4 on the terminal side and will not be repeated here.

[0602] A schematic diagram of the overall process of this example is shown in FIG8 .

[0603] Step 1: Send first information, which includes configuration information of Msg1-PRACH, Msg3, MsgA-PRACH and MsgA-PUSCH.

[0604] The first information includes Msg1-PRACH, Msg3, MsgA-PRACH and MsgA-PUSCH configuration information of the SBFD aware UE. Optionally, the first information includes a first parameter set, a second parameter set and other configuration information.

[0605] Among them, the first parameter set includes at least one of the following: the actual load sum (payload) of Msg3; the actual load sum (payload) of MsgA; the maximum load of Msg3 when Msg1 uses Preamble group A (ra-Msg3SizeGroupA); the maximum load of MsgA-PUSCH when MsgA-PRACH uses Preamble group A (ra-MsgA-SizeGroupA); the maximum transmit power (PCMAX) of Msg1 and MsgA-PRACH; the target received power (preamble Received Target Power) of Msg1; the target received power (MsgA-preamble Received Target Power) of MsgA-PRACH; the transmit power difference between Msg3 and Msg1 (msg3-DeltaPreamble); the transmit power difference between MsgA-PUSCH and MsgA-PRACH (msgA-DeltaPreamble-r16); 4-step The difference in preamble transmit power between Preamble Group A and Preamble Group B in RA (RACH-ConfigCommon->messagePowerOffsetGroupB). The difference in preamble transmit power between Preamble Group A and Preamble Group B in 2-step RA (RACH-ConfigCommonTwoStepRA-r16->messagePowerOffsetGroupB).

[0606] Among them, the second parameter set includes at least one of the following: the target received power of Msg1 (preambleReceivedTargetPower); the target received power of MsgA-PRACH (MsgA-preambleReceivedTargetPower); the power ramping step of Msg1 (powerRampingStep); the power ramping step of MsgA-PRACH (msgA-PreamblePowerRampingStep-r16); the maximum transmit power of Msg1.

[0607] MsgA is the uplink signal sent by the UE in step 1 of 2-step RA, including PRACH and PUSCH, respectively called MsgA-PRACH and MsgA-PUSCH;

[0608] Msg1 is the uplink signal sent by the UE in step 1 of the 4-step RA, including PRACH;

[0609] Msg3 is the uplink signal sent by the UE in step 3 of the 4-step RA, including the PUSCH.

[0610] Step 2: Determine the transmission power of the preamble sequence group and / or PRACH used in multiple transmissions on SBFD and non-SBFD symbols according to the first information.

[0611] According to the first information, the SBFD aware UE uses at least one of the above solutions 1 to 5 to determine the transmission power of the Preamble group and / or PRACH used on the SBFD and non-SBFD symbols.

[0612] In summary, the method proposed in this example can determine the transmission power of the Preamble group and / or PRACH used in N repetitions on SBFD and non-SBFD symbols in PRACH with repetition.

[0613] The method is specifically as follows: Figure 9a is a schematic diagram of the structure of terminal 101 according to an embodiment of the present disclosure. As shown in Figure 9a, terminal 101 includes a transceiver module 9101 for receiving first information sent by a network device; optionally, the transceiver module is configured to execute at least one of the transceiver-related steps (such as, but not limited to, step 2101) executed by terminal 101 in any of the above methods, which will not be further described here.

[0614] In some embodiments, the transceiver module 9101 may also be configured to receive second information sent by a network device.

[0615] As shown in Figure 9a, the terminal 101 also includes: a processing module 9102, which is used to determine the preamble code group and / or transmission power used for PRACH repeated transmission on the first time domain unit based on the first information, and the first time domain unit includes sub-band full-duplex SBFD symbols and non-SBFD symbols; optionally, the above-mentioned processing module is used to execute at least one of the steps related to the processing performed by the terminal 101 in any of the above methods (such as step 2102, but not limited to this), which will not be repeated here.

[0616] Figure 9b is a schematic diagram of the structure of network device 102 according to an embodiment of the present disclosure. As shown in Figure 9b, network device 101 includes a transceiver module 9201 configured to send first information to a terminal. Optionally, the transceiver module is configured to execute at least one of the steps (such as, but not limited to, step 2101) related to transmission and reception performed by network device 102 in any of the above methods, which will not be further described here.

[0617] In some embodiments, the transceiver module 9201 may also be configured to send second information to the terminal.

[0618] As shown in Figure 9b, the network device 102 also includes: a determination module 9202, which is used to determine the preamble code group and / or transmission power used for PRACH repeated transmission on the first time domain unit based on the first information, and the first time domain unit includes sub-band full-duplex SBFD symbols and non-SBFD symbols; optionally, the above-mentioned determination module is used to execute at least one of the determination-related steps (such as step 2103, but not limited to this) performed by the network device 102 in any of the above methods, which will not be repeated here.

[0619] As shown in Figure 10a, the communication device 10100 includes one or more processors 10101. Processor 10101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, baseband chip, terminal device, terminal device chip, DU or CU, etc.), execute programs, and process program data. Processor 10101 is used to call instructions to enable the communication device 10100 to perform any of the above methods.

[0620] In some embodiments, the communication device 10100 further includes one or more memories 10102 for storing instructions. Optionally, all or part of the memory 10102 may be located outside the communication device 10100.

[0621] In some embodiments, the communication device 10100 further includes one or more transceivers 10103. When the communication device 10100 includes one or more transceivers 10103, the communication steps such as sending and receiving in the above method are performed by the transceiver 10103, and the other steps are performed by the processor 10101.

[0622] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0623] Optionally, the communication device 10100 further includes one or more interface circuits 10104, which are connected to the memory 10102. The interface circuits 10104 may be configured to receive signals from the memory 10102 or other devices, and may be configured to send signals to the memory 10102 or other devices. For example, the interface circuits 10104 may read instructions stored in the memory 10102 and send the instructions to the processor 10101.

[0624] The communication device 10100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 10100 described in the present disclosure is not limited thereto, and the structure of the communication device 10100 may not be limited by FIG. 10a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0625] FIG10b is a schematic diagram of the structure of a chip 10200 according to an embodiment of the present disclosure. If the communication device 10100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 10200 shown in FIG10b , but the present disclosure is not limited thereto.

[0626] Chip 10200 includes one or more processors 10201, and processor 10201 is used to call instructions to enable chip 10200 to execute any of the above methods.

[0627] In some embodiments, chip 10200 further includes one or more interface circuits 10202, which are connected to memory 10203. Interface circuit 10202 can be used to receive signals from memory 10203 or other devices, and can be used to send signals to memory 10203 or other devices. For example, interface circuit 10202 can read instructions stored in memory 10203 and send the instructions to processor 10201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0628] In some embodiments, the chip 10200 further includes one or more memories 10203 for storing instructions. Alternatively, all or part of the memories 10203 may be outside the chip 10200.

[0629] The present disclosure also provides a storage medium having instructions stored thereon. When the instructions are executed on the communication device 10100, the communication device 10100 is caused to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0630] The present disclosure also provides a program product, which, when executed by the communication device 10100, enables the communication device 10100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0631] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0632] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0633] The correspondences shown in the tables of the present disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values, which are not limited by the present disclosure. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables of the present disclosure, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also adopt other names that can be understood by the communication device, and the values ​​or representations of the parameters may also adopt other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0634] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0635] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0636] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0637] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: The method is executed by a terminal, and includes: receiving first information sent by a network device; Based on the first information, a preamble code group and / or a transmission power used for repeated PRACH transmission on a first time domain unit is determined, where the first time domain unit includes a sub-band full-duplex SBFD symbol and a non-SBFD symbol.

2. The method according to claim 1, characterized in that Determining, based on the first information, a preamble group used for PRACH repetitive transmission on a first time domain unit includes: Based on the first information, determining to use a first preamble group for repeated PRACH transmission on the SBFD symbol and to use a second preamble group for repeated PRACH transmission on the non-SBFD symbol, where the first preamble group and the second preamble group are different; Based on the first preamble group and / or the second preamble group, a preamble group used for PRACH repetitive transmission on the first time domain unit is determined.

3. The method according to claim 2, characterized in that The determining, based on the first preamble group and / or the second preamble group, a preamble group used for repeated PRACH transmission on the first time domain unit includes: Based on the first preamble group and / or the second preamble group, it is determined that the preamble group used for PRACH repeated transmission on the first time domain unit is: the preamble group used for the first PRACH transmission in the PRACH repeated transmission.

4. The method according to claim 3, characterized in that The determining, based on the first preamble group and / or the second preamble group, that the preamble group used for PRACH repeated transmission on the first time domain unit is the preamble group used for the first PRACH transmission in the PRACH repeated transmission includes: Determine a first time domain symbol type, where the first time domain symbol type is a time domain symbol type of a time domain symbol in which a first PRACH transmission in the PRACH repeated transmission occurs; Determine that the preamble code group used for PRACH repeated transmission on the first time domain unit is the first preamble code group, and the first time domain symbol type is the SBFD symbol; or, determine that the preamble code group used for PRACH repeated transmission on the first time domain unit is the second preamble code group, and the first time domain symbol type is the non-SBFD symbol.

5. The method according to claim 2, characterized in that The method further includes: receiving second information sent by the network device; The determining, based on the first preamble group and / or the second preamble group, a preamble group used for repeated PRACH transmission on the first time domain unit includes: Based on the second information, it is determined that the preamble code group used for PRACH repetitive transmission on the first time domain unit is the first preamble code group or the second preamble code group.

6. The method according to claim 5, characterized in that The determining, based on the second information, that the preamble group used for repeated PRACH transmission on the first time domain unit is the first preamble group or the second preamble group includes: Based on the second information, determining that the time domain symbol type that meets the preset condition is the second time domain symbol type; Determine that the preamble code group used for repeated PRACH transmission on the first time domain unit is the first preamble code group, and the second time domain symbol type is the SBFD symbol; or, It is determined that the preamble code group used for repeated PRACH transmission on the first time domain unit is the second preamble code group, and the second time domain symbol type is the non-SBFD symbol.

7. The method according to claim 2, characterized in that The determining, based on the first preamble group and / or the second preamble group, a preamble group used for repeated PRACH transmission on the first time domain unit includes: Determine a first preamble group, where the first preamble group is a preamble group used for PRACH repetitive transmission on the SBFD symbol; and A second preamble group is determined, where the second preamble group is a preamble group used for performing PRACH repetitive transmission on the non-SBFD symbol.

8. The method according to claim 7, characterized in that In each PRACH repetition transmission, the preamble codes used on different time domain symbol categories are different, and the preamble codes used on the same time domain symbol category are the same.

9. The method according to claim 2, characterized in that The determining, based on the first preamble group and / or the second preamble group, a preamble group used for repeated PRACH transmission on the first time domain unit includes: Based on the second information, a third time domain symbol type is determined, where the third time domain symbol type is the time domain symbol type of the terminal in the first time domain unit. The time domain symbol type used for PRACH repetitive transmission; Determining to perform PRACH repetition transmission on an SBFD symbol, where the preamble group used by the terminal for performing PRACH repetition transmission on the SBFD symbol is the first preamble group, and the third time domain symbol type is the SBFD symbol; or, It is determined to perform PRACH repetition transmission on a non-SBFD symbol, the preamble group used by the terminal for performing PRACH repetition transmission on the non-SBFD symbol is the second preamble group, and the third time domain symbol type is the non-SBFD symbol.

10. The method according to claim 1, characterized in that The determining, based on the first information, a preamble group used for repeated PRACH transmission on a first time domain unit includes: Determine, based on the first information, a third preamble group, where the third preamble group is a preamble group used for repeated PRACH transmission on the SBFD symbol and a preamble group used for repeated PRACH transmission on the non-SBFD symbol; Based on the third preamble group, a preamble group used for PRACH repetitive transmission in the first time domain unit is determined.

11. The method according to claim 10, characterized in that The determining, based on the third preamble group, a preamble group used for repeated PRACH transmission on the first time domain unit includes: Determine that the preamble code group used for repeated PRACH transmission on the first time domain unit is the third preamble code group.

12. The method according to claim 10, characterized in that The determining, based on the third preamble group, a preamble group used for repeated PRACH transmission on the first time domain unit includes: Determine, based on the second information, a third time domain symbol type, where the third time domain symbol type is a time domain symbol type used by the terminal to repeatedly transmit the PRACH on the first time domain unit; Determining to perform PRACH repetition transmission on an SBFD symbol, the preamble group used by the terminal for performing PRACH repetition transmission on the SBFD symbol is the third preamble group, and the third time domain symbol type is the SBFD symbol; or, It is determined to perform PRACH repetition transmission on non-SBFD symbols, the preamble group used by the terminal to perform PRACH repetition transmission on non-SBFD symbols is the third preamble group, and the third time domain symbol type is the non-SBFD symbol.

13. The method according to any one of claims 2-5 and 9-12, characterized in that: The preamble code used for each PRACH retransmission is the same.

14. The method according to any one of claims 1 to 13, characterized in that Determining, based on the first information, a transmit power used for repeated PRACH transmission on a first time domain unit includes: Based on the first information, determining to use a first transmit power for repeated PRACH transmission on the SBFD symbol and to use a second transmit power for repeated PRACH transmission on the non-SBFD symbol, where the first transmit power and the second transmit power are different; Based on the first transmit power and / or the second transmit power, a transmit power used for repeated PRACH transmission on the first time domain unit is determined.

15. The method according to claim 14, characterized in that The determining, based on the first transmit power and / or the second transmit power, a transmit power used for repeated PRACH transmission on the first time domain unit includes: Based on the first transmit power and / or the second transmit power, it is determined that the transmit power used for repeated PRACH transmission on the first time domain unit is: the transmit power used for the first PRACH transmission in the repeated PRACH transmission.

16. The method according to claim 15, characterized in that The determining, based on the first transmit power and / or the second transmit power, the transmit power used for repeated PRACH transmission on the first time domain unit: the transmit power used for the first PRACH transmission in the repeated PRACH transmission includes: Determine a first time domain symbol type, where the first time domain symbol type is a time domain symbol type of a time domain symbol in which a first PRACH transmission in the PRACH repeated transmission occurs; Determine that the transmit power used for repeated PRACH transmission on a first time domain unit is the first transmit power, and the first time domain symbol type is the SBFD symbol; or, It is determined that the transmit power used for repeated PRACH transmission on the first time domain unit is the second transmit power, and the first time domain symbol type is the non-SBFD symbol.

17. The method according to claim 14, characterized in that The determining, based on the first transmit power and / or the second transmit power, a transmit power used for repeated PRACH transmission on the first time domain unit includes: Based on the second information, it is determined that the transmission power used for repeated PRACH transmission in the first time domain unit is the first transmission power or the second transmission power.

18. The method according to claim 17, characterized in that The determining, based on the second information, that the transmit power used for repeated PRACH transmission on the first time domain unit is the first transmit power or the second transmit power includes: Determining, based on the second information, a second time-domain symbol type that meets a preset condition; Determine that the transmit power used for repeated PRACH transmission on a first time domain unit is the first transmit power, and the second time domain symbol type is the SBFD symbol; or, It is determined that the transmit power used for repeated PRACH transmission on the first time domain unit is the second transmit power, and the second time domain symbol type is the non-SBFD symbol.

19. The method according to claim 14, wherein The determining, based on the first transmit power and / or the second transmit power, a transmit power used for repeated PRACH transmission on the first time domain unit includes: determining a third transmit power based on the first transmit power and / or the second transmit power; Determine that the transmission power used for repeated PRACH transmission on the first time domain unit is the third transmission power.

20. The method according to claim 14, wherein The determining, based on the first transmit power and / or the second transmit power, a transmit power used for repeated PRACH transmission on the first time domain unit includes: Determine the transmit power used for repeated PRACH transmission on the SBFD symbol as the first transmit power; and Determine the transmission power used for repeated PRACH transmission on the non-SBFD symbol as the second transmission power.

21. The method according to claim 20, characterized in that In each PRACH repetition transmission, the transmission power used on different time domain symbol categories is different, and the transmission power used on the same time domain symbol category is the same.

22. The method according to claim 14, wherein The determining, based on the first transmit power and / or the second transmit power, a transmit power used for repeated PRACH transmission on the first time domain unit includes: Determine, based on the second information, a third time domain symbol type, where the third time domain symbol type is a time domain symbol type used by the terminal to repeatedly transmit the PRACH on the first time domain unit; Determining to perform PRACH repetition transmission on an SBFD symbol, where the transmit power used by the terminal for performing PRACH repetition transmission on the SBFD symbol is the first transmit power, and the third time domain symbol type is the SBFD symbol; or, It is determined to perform PRACH repetition transmission on a non-SBFD symbol, the transmit power used by the terminal for performing PRACH repetition transmission on the non-SBFD symbol is the second transmit power, and the third time domain symbol type is the non-SBFD symbol.

23. The method according to any one of claims 1 to 13, characterized in that Determining, based on the first information, a transmit power used for repeated PRACH transmission on a first time domain unit includes: Based on the first information, determine that the transmit power used for repeated PRACH transmission on the SBFD symbol and the transmit power used for repeated PRACH transmission on the non-SBFD symbol are both a fourth transmit power; Based on the fourth transmit power, a transmit power used for repeated PRACH transmission in the first time domain unit is determined.

24. The method according to claim 23, wherein The determining, based on the fourth transmit power, the transmit power used for repeated PRACH transmission on the first time domain unit includes: Determine that the transmission power used for repeated PRACH transmission in the first time domain unit is the fourth transmission power.

25. The method according to claim 23, characterized in that The determining, based on the fourth transmit power, the transmit power used for repeated PRACH transmission on the first time domain unit includes: Determine, based on the second information, a third time domain symbol type, where the third time domain symbol type is a time domain symbol type used by the terminal to repeatedly transmit the PRACH on the first time domain unit; Determining to perform PRACH repetition transmission on an SBFD symbol, the transmit power used by the terminal for performing PRACH repetition transmission on the SBFD symbol is the fourth transmit power, and the third time domain symbol type is the SBFD symbol; or, It is determined to perform PRACH repetition transmission on a non-SBFD symbol, the transmit power used by the terminal for performing PRACH repetition transmission on the non-SBFD symbol is the fourth transmit power, and the third time domain symbol type is the non-SBFD symbol.

26. The method according to any one of claims 14-19, 22-25, characterized in that The transmission power used for each PRACH retransmission is the same.

27. The method according to any one of claims 1 to 26, characterized in that The method further comprises: determining a transmission mode for repeatedly transmitting the PRACH on the first time domain unit; The sending method includes any of the following: A first transmission mode indicates that the SBFD symbol and the non-SBFD symbol are used in the first time domain unit to repeatedly transmit the PRACH; A second transmission mode indicates that only the SBFD symbol is used for PRACH repeated transmission on the first time domain unit; The third sending mode indicates that only the non-SBFD symbols are used to perform PRACH repeated transmission on the first time domain unit.

28. The method according to claim 27, characterized in that The determining of a transmission mode for repeatedly transmitting the PRACH on the first time domain unit includes: Based on the second information, the sending mode is determined to be the first sending mode, the second sending mode, or the third sending mode.

29. The method according to claim 27, characterized in that The determining of a transmission mode for repeatedly transmitting the PRACH on the first time domain unit includes: When the first condition is met, determining that the sending mode is the first sending mode; When the first condition is not met, the sending mode is determined to be the second sending mode or the third sending mode.

30. The method according to claim 29, wherein The first condition is: The first preamble group used for repeated PRACH transmission on the SBFD symbol is the same as the second preamble group used for repeated PRACH transmission on the non-SBFD symbol, and an intersection of the first preamble group and the second preamble group is not empty; or The preambles included in the random access occasions RO associated with the same synchronized broadcast block SSB on the SBFD symbol and the non-SBFD symbol have an intersection, and the intersection is not empty; or A first transmission power used for repeated PRACH transmission on the SBFD symbol is the same as a second transmission power used for repeated PRACH transmission on the non-SBFD symbol.

31. The method according to any one of claims 27 to 30, characterized in that The method further comprises: When the transmission mode is the second transmission mode or the third transmission mode, it is determined that the symbol type used for repeated PRACH transmission on the first time domain unit is a symbol type that meets a preset condition.

32. The method according to claims 1 to 31, characterized in that The first information includes a first parameter set and / or a second parameter set, the first parameter set is used to determine the preamble code group, the second parameter set is used to determine the transmit power, at least one first parameter in the first parameter set has different values ​​on the SBFD symbol and the non-SBFD symbol, and at least one second parameter in the second parameter set has different values ​​on the SBFD symbol and the non-SBFD symbol.

33. A communication method, characterized in that: The method is performed by a network device, and includes: Sending first information to the terminal; Based on the first information, a preamble code group and / or a transmission power used for repeated PRACH transmission on a first time domain unit is determined, where the first time domain unit includes a sub-band full-duplex SBFD symbol and a non-SBFD symbol.

34. The method according to claim 33, wherein Determining, based on the first information, a preamble group used for PRACH repetitive transmission on a first time domain unit includes: Based on the first information, determining to use a first preamble group for repeated PRACH transmission on the SBFD symbol and to use a second preamble group for repeated PRACH transmission on the non-SBFD symbol, where the first preamble group and the second preamble group are different; Based on the first preamble group and / or the second preamble group, a preamble group used for PRACH repetitive transmission on the first time domain unit is determined.

35. The method according to claim 34, wherein The determining, based on the first preamble group and / or the second preamble group, a preamble group used for repeated PRACH transmission on the first time domain unit includes: Based on the first preamble group and / or the second preamble group, it is determined that the preamble group used for PRACH repeated transmission on the first time domain unit is: the preamble group used for the first PRACH transmission in the PRACH repeated transmission.

36. The method according to claim 35, characterized in that The determining, based on the first preamble group and / or the second preamble group, that the preamble group used for PRACH repeated transmission on the first time domain unit is the preamble group used for the first PRACH transmission in the PRACH repeated transmission includes: Determine a first time domain symbol type, where the first time domain symbol type is a time domain symbol type of a time domain symbol in which a first PRACH transmission in the PRACH repeated transmission occurs; Determine that the preamble code group used for repeated PRACH transmission on the first time domain unit is the first preamble code group, and the first time domain The symbol type is the SBFD symbol; or, determining that the preamble code group used for PRACH repeated transmission on the first time domain unit is the second preamble code group, and the first time domain symbol type is the non-SBFD symbol.

37. The method according to claim 34, wherein The method further includes: receiving second information sent by the network device; The determining, based on the first preamble group and / or the second preamble group, a preamble group used for repeated PRACH transmission on the first time domain unit includes: Based on the second information, it is determined that the preamble code group used for PRACH repetitive transmission on the first time domain unit is the first preamble code group or the second preamble code group.

38. The method according to claim 37, wherein The determining, based on the second information, that the preamble group used for repeated PRACH transmission on the first time domain unit is the first preamble group or the second preamble group includes: Based on the second information, determining that the time domain symbol type that meets the preset condition is the second time domain symbol type; Determine that the preamble code group used for repeated PRACH transmission on the first time domain unit is the first preamble code group, and the second time domain symbol type is the SBFD symbol; or, It is determined that the preamble code group used for repeated PRACH transmission on the first time domain unit is the second preamble code group, and the second time domain symbol type is the non-SBFD symbol.

39. The method according to claim 34, wherein The determining, based on the first preamble group and / or the second preamble group, a preamble group used for repeated PRACH transmission on the first time domain unit includes: Determine a first preamble group, where the first preamble group is a preamble group used for PRACH repetitive transmission on the SBFD symbol; and A second preamble group is determined, where the second preamble group is a preamble group used for performing PRACH repetitive transmission on the non-SBFD symbol.

40. The method according to claim 39, wherein In each PRACH repetition transmission, the preamble codes used on different time domain symbol categories are different, and the preamble codes used on the same time domain symbol category are the same.

41. The method according to claim 34, wherein The determining, based on the first preamble group and / or the second preamble group, a preamble group used for repeated PRACH transmission on the first time domain unit includes: Determine, based on the second information, a third time domain symbol type, where the third time domain symbol type is a time domain symbol type used by the terminal to repeatedly transmit the PRACH on the first time domain unit; Determining to perform PRACH repetition transmission on an SBFD symbol, where the preamble group used by the terminal for performing PRACH repetition transmission on the SBFD symbol is the first preamble group, and the third time domain symbol type is the SBFD symbol; or, It is determined to perform PRACH repetition transmission on a non-SBFD symbol, the preamble group used by the terminal for performing PRACH repetition transmission on the non-SBFD symbol is the second preamble group, and the third time domain symbol type is the non-SBFD symbol.

42. The method according to claim 33, wherein The determining, based on the first information, a preamble group used for repeated PRACH transmission on a first time domain unit includes: Determine, based on the first information, a third preamble group, where the third preamble group is a preamble group used for repeated PRACH transmission on the SBFD symbol and a preamble group used for repeated PRACH transmission on the non-SBFD symbol; Based on the third preamble group, a preamble group used for PRACH repetitive transmission in the first time domain unit is determined.

43. The method according to claim 42, characterized in that The determining, based on the third preamble group, a preamble group used for repeated PRACH transmission on the first time domain unit includes: Determine that the preamble code group used for repeated PRACH transmission on the first time domain unit is the third preamble code group.

44. The method according to claim 42, wherein described Determining, based on the third preamble group, a preamble group used for PRACH repetitive transmission on the first time domain unit includes: Determine, based on the second information, a third time domain symbol type, where the third time domain symbol type is a time domain symbol type used by the terminal to repeatedly transmit the PRACH on the first time domain unit; Determining to perform PRACH repetition transmission on an SBFD symbol, the preamble group used by the terminal for performing PRACH repetition transmission on the SBFD symbol is the third preamble group, and the third time domain symbol type is the SBFD symbol; or, It is determined to perform PRACH repetition transmission on non-SBFD symbols, the preamble group used by the terminal to perform PRACH repetition transmission on non-SBFD symbols is the third preamble group, and the third time domain symbol type is the non-SBFD symbol.

45. The method according to any one of claims 34-38, 41-44, characterized in that The preamble code used for each PRACH retransmission is the same.

46. ​​The method according to any one of claims 33 to 45, characterized in that Determining, based on the first information, a transmit power used for repeated PRACH transmission on a first time domain unit includes: Based on the first information, determining to use a first transmit power for repeated PRACH transmission on the SBFD symbol and to use a second transmit power for repeated PRACH transmission on the non-SBFD symbol, where the first transmit power and the second transmit power are different; Based on the first transmit power and / or the second transmit power, a transmit power used for repeated PRACH transmission on the first time domain unit is determined.

47. The method according to claim 46, wherein The determining, based on the first transmit power and / or the second transmit power, a transmit power used for repeated PRACH transmission on the first time domain unit includes: Based on the first transmit power and / or the second transmit power, it is determined that the transmit power used for repeated PRACH transmission on the first time domain unit is: the transmit power used for the first PRACH transmission in the repeated PRACH transmission.

48. The method according to claim 47, wherein The determining, based on the first transmit power and / or the second transmit power, the transmit power used for repeated PRACH transmission on the first time domain unit: the transmit power used for the first PRACH transmission in the repeated PRACH transmission includes: Determine a first time domain symbol type, where the first time domain symbol type is a time domain symbol type of a time domain symbol in which a first PRACH transmission in the PRACH repeated transmission occurs; Determine that the transmit power used for repeated PRACH transmission on a first time domain unit is the first transmit power, and the first time domain symbol type is the SBFD symbol; or, It is determined that the transmit power used for repeated PRACH transmission on the first time domain unit is the second transmit power, and the first time domain symbol type is the non-SBFD symbol.

49. The method according to claim 46, wherein The determining, based on the first transmit power and / or the second transmit power, a transmit power used for repeated PRACH transmission on the first time domain unit includes: Based on the second information, it is determined that the transmission power used for repeated PRACH transmission in the first time domain unit is the first transmission power or the second transmission power.

50. The method according to claim 49, wherein described Determining, based on the second information, that a transmit power used for repeated PRACH transmission on a first time domain unit is the first transmit power or the second transmit power includes: Determining, based on the second information, a second time-domain symbol type that meets a preset condition; Determine that the transmit power used for repeated PRACH transmission on a first time domain unit is the first transmit power, and the second time domain symbol type is the SBFD symbol; or, It is determined that the transmit power used for repeated PRACH transmission on the first time domain unit is the second transmit power, and the second time domain symbol type is the non-SBFD symbol.

51. The method according to claim 46, wherein The determining, based on the first transmit power and / or the second transmit power, a transmit power used for repeated PRACH transmission on the first time domain unit includes: determining a third transmit power based on the first transmit power and / or the second transmit power; Determine that the transmission power used for repeated PRACH transmission on the first time domain unit is the third transmission power.

52. The method according to claim 46, wherein The determining, based on the first transmit power and / or the second transmit power, a transmit power used for repeated PRACH transmission on the first time domain unit includes: Determine the transmit power used for repeated PRACH transmission on the SBFD symbol as the first transmit power; and Determine the transmission power used for repeated PRACH transmission on the non-SBFD symbol as the second transmission power.

53. The method according to claim 52, characterized in that In each PRACH repetition transmission, the transmission power used on different time domain symbol categories is different, and the transmission power used on the same time domain symbol category is the same.

54. The method according to claim 46, wherein The determining, based on the first transmit power and / or the second transmit power, a transmit power used for repeated PRACH transmission on the first time domain unit includes: Based on the second information, a third time domain symbol type is determined, where the third time domain symbol type is the time domain symbol type of the terminal in the first time domain unit. The time domain symbol type used for PRACH repetitive transmission; Determining to perform PRACH repetition transmission on an SBFD symbol, where the transmit power used by the terminal for performing PRACH repetition transmission on the SBFD symbol is the first transmit power, and the third time domain symbol type is the SBFD symbol; or, It is determined to perform PRACH repetition transmission on a non-SBFD symbol, the transmit power used by the terminal for performing PRACH repetition transmission on the non-SBFD symbol is the second transmit power, and the third time domain symbol type is the non-SBFD symbol.

55. The method according to any one of claims 33 to 45, characterized in that Determining, based on the first information, a transmit power used for repeated PRACH transmission on a first time domain unit includes: Based on the first information, determine that the transmit power used for repeated PRACH transmission on the SBFD symbol and the transmit power used for repeated PRACH transmission on the non-SBFD symbol are both a fourth transmit power; Based on the fourth transmit power, a transmit power used for repeated PRACH transmission in the first time domain unit is determined.

56. The method according to claim 55, characterized in that The determining, based on the fourth transmit power, the transmit power used for repeated PRACH transmission on the first time domain unit includes: Determine that the transmission power used for repeated PRACH transmission in the first time domain unit is the fourth transmission power.

57. The method according to claim 55, characterized in that The determining, based on the fourth transmit power, the transmit power used for repeated PRACH transmission on the first time domain unit includes: Determine, based on the second information, a third time domain symbol type, where the third time domain symbol type is a time domain symbol type used by the terminal to repeatedly transmit the PRACH on the first time domain unit; Determining to perform PRACH repetition transmission on an SBFD symbol, the transmit power used by the terminal for performing PRACH repetition transmission on the SBFD symbol is the fourth transmit power, and the third time domain symbol type is the SBFD symbol; or, It is determined to perform PRACH repetition transmission on a non-SBFD symbol, the transmit power used by the terminal for performing PRACH repetition transmission on the non-SBFD symbol is the fourth transmit power, and the third time domain symbol type is the non-SBFD symbol.

58. The method according to any one of claims 46-51, 53-57, characterized in that The transmission power used for each PRACH retransmission is the same.

59. The method according to any one of claims 33 to 58, characterized in that The method further comprises: determining a transmission mode for repeatedly transmitting the PRACH on the first time domain unit; The sending method includes any of the following: A first transmission mode indicates that the SBFD symbol and the non-SBFD symbol are used in the first time domain unit to repeatedly transmit the PRACH; A second transmission mode indicates that only the SBFD symbol is used for PRACH repeated transmission on the first time domain unit; The third sending mode indicates that only the non-SBFD symbols are used to perform PRACH repeated transmission on the first time domain unit.

60. The method according to claim 59, wherein The determining of a transmission mode for repeatedly transmitting the PRACH on the first time domain unit includes: Based on the second information, the sending mode is determined to be the first sending mode, the second sending mode, or the third sending mode.

61. The method according to claim 59, wherein The determining of a transmission mode for repeatedly transmitting the PRACH on the first time domain unit includes: When the first condition is met, determining that the sending mode is the first sending mode; When the first condition is not met, the sending mode is determined to be the second sending mode or the third sending mode.

62. The method according to claim 61, characterized in that The first condition is: The first preamble group used for repeated PRACH transmission on the SBFD symbol is the same as the second preamble group used for repeated PRACH transmission on the non-SBFD symbol, and an intersection of the first preamble group and the second preamble group is not empty; or The preambles included in the access occasions RO associated with the same synchronized broadcast block SSB on the SBFD symbol and the non-SBFD symbol have an intersection, and the intersection is not empty; or A first transmission power used for repeated PRACH transmission on the SBFD symbol is the same as a second transmission power used for repeated PRACH transmission on the non-SBFD symbol.

63. The method according to any one of claims 59 to 62, characterized in that The method further comprises: When the transmission mode is the second transmission mode or the third transmission mode, it is determined that the symbol type used for repeated PRACH transmission on the first time domain unit is a symbol type that meets a preset condition.

64. The method according to any one of claims 33 to 63, characterized in that The first information includes a first parameter set and / or a second parameter set, the first parameter set is used to determine the preamble code group, the second parameter set is used to determine the transmit power, at least one first parameter in the first parameter set has different values ​​on the SBFD symbol and the non-SBFD symbol, and at least one second parameter in the second parameter set has different values ​​on the SBFD symbol and the non-SBFD symbol.

65. A terminal, characterized in that: include: a transceiver module, configured to receive first information sent by a network device; The processing module is configured to determine, based on the first information, a preamble code group and / or a transmission power used for repeated PRACH transmission on a first time domain unit, where the first time domain unit includes a sub-band full-duplex SBFD symbol and a non-SBFD symbol.

66. A network device, characterized in that include: a transceiver module, configured to send first information to a terminal; The determination module is configured to determine, based on the first information, a preamble code group and / or a transmission power used for PRACH repetitive transmission on a first time domain unit, where the first time domain unit includes a sub-band full-duplex SBFD symbol and a non-SBFD symbol.

67. A communication device, wherein: include: transceiver; Memory; A processor is connected to the transceiver and the memory respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and can implement any one of the methods of claims 1-64.

68. A computer storage medium, wherein: The computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by the processor, the method described in any one of claims 1 to 64 can be implemented.

69. A communication system, characterized in that The method comprises a terminal and a network device, wherein the terminal is used to execute the method according to any one of claims 1 to 32, and the network device is used to execute the method according to any one of claims 33 to 64.

Images