Power parameter determination methods, terminal device, network device, storage medium, and program product

Abstract

Provided in the embodiments of the present disclosure are power parameter determination methods, a terminal device, a network device, a storage medium, and a program product. A power parameter determination method, executed by a terminal device, comprises: receiving from a network device power configuration information for a signal, the signal comprising a PRACH and / or an uplink signal; and on the basis of the power configuration information, determining a power parameter for the PRACH on an SBFD symbol. In the embodiments of the present disclosure, a terminal device receives power configuration information for a signal that is sent by a network device, and thus can determine, on the basis of the power configuration information for the signal, a power parameter for a PRACH on an SBFD symbol.

Description

Power parameter determination methods, terminal equipment, network equipment, storage media and software products Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a method for determining power parameters, a terminal device, a network device, a storage medium, and a program product. Background Technology

[0002] Currently, network devices can configure the power parameters of the physical random access channel (PRACH) during the random access process for terminal devices. The terminal device sends the PRACH to the network device according to the power parameters of the PRACH to initiate the random access procedure. Summary of the Invention

[0003] This disclosure provides a power parameter determination method, terminal device, network device, storage medium, and program product for determining the power parameters of PRACH on subband full duplex (SBFD) symbols.

[0004] According to a first aspect of the embodiments of this disclosure, a power parameter determination method is provided, executed by a terminal device, the method comprising:

[0005] Power configuration information for signals received from network devices, including PRACH and / or uplink signals;

[0006] Based on the power configuration information, determine the power parameters of PRACH on the SBFD symbol.

[0007] In this embodiment of the disclosure, the terminal device can determine the power parameters of PRACH on the SBFD symbol based on the power configuration information of the signal sent by the network device, thereby reducing the interference of UE-UE cross-link interference (UE-UE CLI) to other terminal devices or overcoming the impact of base station cross-link interference (gNB-gNB CLI) on PRACH transmission performance.

[0008] According to a second aspect of the embodiments of this disclosure, a power parameter determination method is provided, performed by a network device, the method comprising:

[0009] Power configuration information for sending signals to terminal devices, including PRACH and / or uplink signals;

[0010] Based on the power configuration information, determine the power parameters of PRACH on the SBFD symbol.

[0011] In this embodiment of the disclosure, the power configuration information of the signal sent by the network device to the terminal device helps the terminal device determine the power parameters of the PRACH on the SBFD symbol based on the power configuration information, and then send the PRACH according to the power parameters. The network device determines the power parameters of the PRACH on the SBFD symbol based on the power configuration information, and then receives the PRACH sent by the terminal device according to the power parameters. This can reduce UE-UE CLI interference to other terminal devices or overcome the impact of gNB-gNB CLI on PRACH transmission performance.

[0012] According to a third aspect of the embodiments of this disclosure, a terminal device is provided, comprising:

[0013] The transceiver module is used to receive power configuration information of signals from network devices, including PRACH and / or uplink signals;

[0014] The processing module is used to determine the power parameters of PRACH on the SBFD symbol based on the power configuration information.

[0015] According to a fourth aspect of the embodiments of this disclosure, a network device is provided, comprising:

[0016] The transceiver module is used to send power configuration information of signals to the terminal device, including PRACH and / or uplink signals;

[0017] The processing module is used to determine the power parameters of PRACH on the SBFD symbol based on the power configuration information.

[0018] According to a fifth aspect of the present disclosure, a communication device is provided, which is used to perform the method described in the first aspect and optional implementations of the first aspect, or to perform the method described in the second aspect and optional implementations of the second aspect.

[0019] According to a sixth aspect of the present disclosure, a power parameter determination system is proposed, including a terminal device and a network device, wherein the terminal device is configured to implement the method described in the first aspect and an optional implementation thereof, and the network device is configured to implement the method described in the second aspect and an optional implementation thereof.

[0020] According to a seventh aspect of the present disclosure, a storage medium is provided that stores instructions, which, when executed on a communication device, cause the communication device to perform the method described in the first aspect and its optional implementations, or to perform the method described in the second aspect and its optional implementations.

[0021] According to an eighth aspect of the present disclosure, a program product is provided, comprising at least one of a program and instructions, wherein when the program and at least one of the instructions are executed by a communication device, the program implements the method described in the first aspect and the optional implementation of the first aspect, or implements the method described in the second aspect and the optional implementation of the second aspect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0023] Figure 1a is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0024] Figure 1b is a flowchart of a CBRA provided in an embodiment of this disclosure;

[0025] Figure 1c is a second flowchart of the CBRA provided in this embodiment of the present disclosure;

[0026] Figure 1d is a flowchart of CFRA provided in an embodiment of this disclosure;

[0027] Figure 1e is a second flowchart of CFRA provided in an embodiment of this disclosure;

[0028] Figure 1f is a schematic diagram of the SBFD time slot provided in an embodiment of this disclosure;

[0029] Figure 1g is a schematic diagram of RO configuration in SBFD symbol provided by an embodiment of this disclosure;

[0030] Figure 2a is an exemplary schematic diagram of a power parameter determination method provided in an embodiment of this disclosure;

[0031] Figure 2b is an exemplary schematic diagram of a power parameter determination method provided in an embodiment of this disclosure;

[0032] Figure 2c is an exemplary schematic diagram of a power parameter determination method provided in an embodiment of this disclosure.

[0033] Figure 3 is an exemplary schematic diagram of a power parameter determination method provided in an embodiment of this disclosure;

[0034] Figure 4a is an exemplary structural diagram of the terminal device proposed in an embodiment of this disclosure;

[0035] Figure 4b is an exemplary structural diagram of the network device proposed in an embodiment of this disclosure;

[0036] Figure 5a is an exemplary structural schematic diagram of the communication device proposed in an embodiment of this disclosure;

[0037] Figure 5b is an exemplary structural diagram of the chip proposed in an embodiment of this disclosure. Detailed Implementation

[0038] This disclosure provides a power parameter determination method, a terminal device, a network device, a power parameter determination system, a storage medium, and a program product to determine the power parameters of PRACH on subband full duplex (SBFD) symbols.

[0039] According to a first aspect of the embodiments of this disclosure, a power parameter determination method is provided, executed by a terminal device, the method comprising:

[0040] Power configuration information for signals received from network devices, including PRACH and / or uplink signals;

[0041] Based on the power configuration information, determine the power parameters of PRACH on the SBFD symbol.

[0042] In this embodiment of the disclosure, the terminal device can determine the power parameters of PRACH on the SBFD symbol by receiving the power configuration information of the signal sent by the network device, thereby reducing UE-UE CLI interference to other terminal devices or overcoming the impact of gNB-gNB CLI on PRACH transmission performance.

[0043] In conjunction with some embodiments of the first aspect, in some embodiments, the power configuration information includes at least one of the following:

[0044] PRACH power parameters on the SBFD symbol;

[0045] Power parameters of PRACH on non-SBFD symbols;

[0046] The first correlation is the correlation between the power parameters of PRACH on SBFD symbols and the power parameters of PRACH on non-SBFD symbols;

[0047] The second correlation is the correlation between the power parameters of the uplink signal on SBFD symbols and the power parameters of the uplink signal on non-SBFD symbols;

[0048] The third association relationship is the association relationship between the PRACH and the uplink signal.

[0049] In the above embodiments, the power configuration information may include the power parameters of PRACH on SBFD symbols, that is, the network device directly configures the power parameters of PRACH on SBFD symbols for the terminal device; the power configuration information may also include at least one of the power parameters of PRACH on non-SBFD symbols, a first association relationship, a second association relationship, and a third association relationship. The terminal device can determine the power parameters of PRACH on SBFD symbols based on the power parameters of PRACH on non-SBFD symbols, the first association relationship, the second association relationship, and the third association relationship, thereby improving the configuration flexibility of the power parameters of PRACH on SBFD symbols.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, the PRACH includes a PRACH in a two-step random access procedure and / or a PRACH in a four-step random access procedure. Based on power configuration information, the power parameters of the PRACH on the sub-band full-duplex SBFD symbol are determined, including:

[0051] Based on the power configuration information and indication information, determine the power parameters of PRACH on the SBFD symbol;

[0052] The indication information is used to indicate the priority of power parameter values ​​in the power configuration information.

[0053] In the above embodiments, the indication information indicates the priority of the power parameter values ​​in the power configuration information. Based on this priority, the terminal device can determine the power parameter of PRACH on the SBFD symbol from the power parameters in the power configuration information.

[0054] In conjunction with some embodiments of the first aspect, in some embodiments, the order of priority of the values ​​from high to low is as follows:

[0055] The power parameters of PRACH on SBFD symbols in a two-step random access process, the power parameters of PRACH on non-SBFD symbols in a two-step random access process, the power parameters of PRACH on SBFD symbols in a four-step random access process, and the power parameters of PRACH on non-SBFD symbols in a four-step random access process.

[0056] In the above embodiments, the indication information indicates the priority of power parameters in the power configuration information. This priority reflects the correlation between the power parameters of PRACH in the two-step random access process and the power parameters of PRACH in the four-step random access process. Based on this priority, the terminal device can determine a more suitable power parameter as the PRACH power parameter on the SBFD symbol from the power parameters in the power configuration information, which helps to reduce UE-UE CLI interference to other terminal devices or overcome the impact of gNB-gNB CLI on PRACH transmission performance.

[0057] In conjunction with some embodiments of the first aspect, in some embodiments, the power parameter of PRACH on the SBFD symbol during the two-step random access process is one of the following:

[0058] Power parameters of PRACH on SBFD symbols during the two-step random access process;

[0059] Power parameters of PRACH on non-SBFD symbols during the two-step random access process;

[0060] Power parameters of PRACH on SBFD symbols during the four-step random access process;

[0061] Power parameters of PRACH on non-SBFD symbols during the four-step random access process.

[0062] In the above embodiments, by determining the power parameters of PRACH on the SBFD symbol in the two-step random access process, the terminal device can transmit the PRACH in the two-step random access process based on the power parameters of PRACH on the SBFD symbol in the two-step random access process. This helps to reduce UE-UE CLI interference to other terminal devices or overcome the impact of gNB-gNB CLI on PRACH transmission performance.

[0063] In conjunction with some embodiments of the first aspect, in some embodiments, the power parameter of PRACH on the SBFD symbol during the four-step random access process is one of the following:

[0064] Power parameters of PRACH on SBFD symbols during the four-step random access process;

[0065] Power parameters of PRACH on non-SBFD symbols during the four-step random access process.

[0066] In the above embodiments, by determining the power parameters of PRACH on the SBFD symbol in the four-step random access process, the terminal device can transmit the PRACH in the four-step random access process based on the power parameters of PRACH on the SBFD symbol in the four-step random access process. This helps to reduce UE-UE CLI interference to other terminal devices or overcome the impact of gNB-gNB CLI on PRACH transmission performance.

[0067] In conjunction with some embodiments of the first aspect, in some embodiments, the first association relationship includes:

[0068] PRACH's first power scaling factor;

[0069] And / or,

[0070] The first power offset value of PRACH.

[0071] In the above embodiments, the terminal device can determine the correlation between the power parameters of PRACH on SBFD symbols and the power parameters of PRACH on non-SBFD symbols based on the first power scaling factor and / or the first power offset value, thereby determining the power parameters of PRACH on SBFD symbols by combining the power parameters of PRACH on non-SBFD symbols and the first correlation.

[0072] In conjunction with some embodiments of the first aspect, in some embodiments, the second association includes: the second power scaling factor of the uplink signal, PRACH, and / or the second power offset value of the uplink signal, PRACH;

[0073] The third correlation includes: the correlation between the second power scaling factor of the uplink signal and the first power scaling factor of the PRACH; and / or, the correlation between the second power offset value of the uplink signal and the first power offset value of the PRACH.

[0074] In the above embodiments, the terminal device can determine the first power scaling factor based on the second power scaling factor and the correlation between the second power scaling factor and the first power scaling factor of the PRACH; the terminal device can determine the first power offset value based on the second power offset value and the correlation between the second power offset value and the first power offset value of the PRACH. Then, the terminal device can determine the correlation between the power parameters of the PRACH on SBFD symbols and the power parameters of the PRACH on non-SBFD symbols based on the first power scaling factor and / or the first power offset value, thereby determining the power parameters of the PRACH on SBFD symbols by combining the power parameters of the PRACH on non-SBFD symbols and the first correlation.

[0075] In conjunction with some embodiments of the first aspect, in some embodiments, the power parameter of PRACH on the SBFD symbol is the sum of a first power parameter and a first power offset value, wherein:

[0076] The first power parameter is the product of the power parameter of PRACH on non-SBFD symbols and the first power scaling factor.

[0077] In the above embodiments, the terminal device can determine the first power parameter based on the first power scaling factor and the power parameter of PRACH on the non-SBFD symbol, and then determine the power parameter of PRACH on the SBFD symbol by combining the first power parameter and the first power offset value.

[0078] In conjunction with some embodiments of the first aspect, in some embodiments, the power parameter includes at least one of the following:

[0079] Maximum transmit power of the terminal equipment;

[0080] The target receive power of the network device;

[0081] Power ramp-up step size;

[0082] Maximum number of transmissions.

[0083] In the above embodiments, the power parameters may include at least one of the following: the maximum transmit power of the terminal device, the target receive power of the network device, the power ramp step size, and the maximum number of transmissions. The terminal device can send a PRACH to the network device based on the power parameters of the PRACH on the SBFD symbol, thereby initiating a random access procedure.

[0084] In conjunction with some embodiments of the first aspect, in some embodiments, the power configuration information is carried in at least one of the following signaling:

[0085] Downlink control information (DCI);

[0086] Radio resource control (RRC) message;

[0087] Medium access control-control element (MAC CE).

[0088] In the above embodiments, power configuration information can be carried in different types of signaling, which improves the configuration flexibility of power configuration information.

[0089] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0090] Based on the power parameters of PRACH on the SBFD symbol, send PRACH to the network device.

[0091] According to a second aspect of the embodiments of this disclosure, a power parameter determination method is provided, performed by a network device, the method comprising:

[0092] Power configuration information for sending signals to terminal devices, including PRACH and / or uplink signals;

[0093] Based on the power configuration information, determine the power parameters of PRACH on the SBFD symbol.

[0094] In this embodiment of the disclosure, the power configuration information of the signal sent by the network device to the terminal device helps the terminal device determine the power parameters of the PRACH on the SBFD symbol based on the power configuration information, and then send the PRACH according to the power parameters. The network device determines the power parameters of the PRACH on the SBFD symbol based on the power configuration information, and then receives the PRACH sent by the terminal device according to the power parameters. This can reduce UE-UE CLI interference to other terminal devices or overcome the impact of gNB-gNB CLI on PRACH transmission performance.

[0095] In conjunction with some embodiments of the second aspect, in some embodiments, the power configuration information includes at least one of the following:

[0096] PRACH power parameters on the SBFD symbol;

[0097] Power parameters of PRACH on non-SBFD symbols;

[0098] The first correlation is the correlation between the power parameters of PRACH on SBFD symbols and the power parameters of PRACH on non-SBFD symbols;

[0099] The second correlation is the correlation between the power parameters of the uplink signal on SBFD symbols and the power parameters of the uplink signal on non-SBFD symbols;

[0100] The third association relationship is the association relationship between the PRACH and the uplink signal.

[0101] In the above embodiments, the power configuration information may include the power parameters of the PRACH on the SBFD symbol, that is, the network device directly configures the power parameters of the PRACH on the SBFD symbol for the terminal device; the power configuration information may also include at least one of the power parameters of the PRACH on non-SBFD symbols, a first association relationship, a second association relationship, and a third association relationship. The network device can determine the power parameters of the PRACH on the SBFD symbol based on the power parameters of the PRACH on non-SBFD symbols, the first association relationship, the second association relationship, and the third association relationship, thereby improving the configuration flexibility of the power parameters of the PRACH on the SBFD symbol.

[0102] In conjunction with some embodiments of the second aspect, in some embodiments, the PRACH includes a PRACH in a two-step random access procedure and / or a PRACH in a four-step random access procedure. Based on power configuration information, the power parameters of the PRACH on the SBFD symbol are determined, including:

[0103] Based on the power configuration information and indication information, determine the power parameters of PRACH on the SBFD symbol;

[0104] The indication information is used to indicate the priority of power parameter values ​​in the power configuration information.

[0105] In the above embodiments, the indication information indicates the priority of the power parameter values ​​in the power configuration information. Based on this priority, the network device can determine the power parameter of PRACH on the SBFD symbol from the power parameters in the power configuration information.

[0106] In conjunction with some embodiments of the second aspect, in some embodiments, the order of priority of the values ​​from high to low is as follows:

[0107] The power parameters of PRACH on SBFD symbols in a two-step random access process, the power parameters of PRACH on non-SBFD symbols in a two-step random access process, the power parameters of PRACH on SBFD symbols in a four-step random access process, and the power parameters of PRACH on non-SBFD symbols in a four-step random access process.

[0108] In the above embodiments, the indication information indicates the priority of power parameters in the power configuration information. This priority reflects the correlation between the power parameters of PRACH in the two-step random access process and the power parameters of PRACH in the four-step random access process. Based on this priority, the network device can determine a more suitable power parameter from the power parameters in the power configuration information as the power parameter of PRACH on the SBFD symbol, which helps to reduce UE-UE CLI interference to other terminal devices or overcome the impact of gNB-gNB CLI on PRACH transmission performance.

[0109] In conjunction with some embodiments of the second aspect, in some embodiments, the power parameter of PRACH on the SBFD symbol during the two-step random access process is one of the following:

[0110] Power parameters of PRACH on SBFD symbols during the two-step random access process;

[0111] Power parameters of PRACH on non-SBFD symbols during the two-step random access process;

[0112] Power parameters of PRACH on SBFD symbols during the four-step random access process;

[0113] Power parameters of PRACH on non-SBFD symbols during the four-step random access process.

[0114] In the above embodiments, by determining the power parameters of PRACH on the SBFD symbol in the two-step random access process, the network device can receive the PRACH in the two-step random access process based on the power parameters of PRACH on the SBFD symbol in the two-step random access process. This helps to reduce UE-UE CLI interference to other terminal devices or overcome the impact of gNB-gNB CLI on PRACH transmission performance.

[0115] In conjunction with some embodiments of the second aspect, in some embodiments, the power parameter of PRACH on the SBFD symbol during the P4-step random access process is one of the following:

[0116] Power parameters of PRACH on SBFD symbols during the four-step random access process;

[0117] Power parameters of PRACH on non-SBFD symbols during the four-step random access process.

[0118] In the above embodiments, by determining the power parameters of PRACH on the SBFD symbol in the four-step random access process, the network device can receive the PRACH in the four-step random access process based on the power parameters of PRACH on the SBFD symbol in the four-step random access process. This helps to reduce UE-UE CLI interference to other terminal devices or overcome the impact of gNB-gNB CLI on PRACH transmission performance.

[0119] In conjunction with some embodiments of the second aspect, in some embodiments, the first association relationship includes:

[0120] PRACH's first power scaling factor;

[0121] And / or,

[0122] The first power offset value of PRACH.

[0123] In the above embodiments, the network device can determine the correlation between the power parameters of PRACH on SBFD symbols and the power parameters of PRACH on non-SBFD symbols based on the first power scaling factor and / or the first power offset value, thereby determining the power parameters of PRACH on SBFD symbols by combining the power parameters of PRACH on non-SBFD symbols and the first correlation.

[0124] In conjunction with some embodiments of the second aspect, in some embodiments, the second association includes: the second power scaling factor of the uplink signal, PRACH, and / or the second power offset value PRACH of the uplink signal;

[0125] The third correlation includes: the correlation between the second power scaling factor of the uplink signal and the first power scaling factor of the PRACH; and / or, the correlation between the second power offset value of the uplink signal and the first power offset value of the PRACH.

[0126] In the above embodiments, the network device can determine the first power scaling factor based on the second power scaling factor and the correlation between the second power scaling factor and the first power scaling factor of the PRACH; the network device can determine the first power offset value based on the second power offset value and the correlation between the second power offset value and the first power offset value of the PRACH. Then, the network device can determine the correlation between the power parameters of the PRACH on SBFD symbols and the power parameters of the PRACH on non-SBFD symbols based on the first power scaling factor and / or the first power offset value, thereby determining the power parameters of the PRACH on SBFD symbols by combining the power parameters of the PRACH on non-SBFD symbols and the first correlation.

[0127] In conjunction with some embodiments of the second aspect, in some embodiments, the power parameter of PRACH on the SBFD symbol is the sum of a first power parameter and a first power offset value, wherein:

[0128] The first power parameter is the product of the power parameter of PRACH on non-SBFD symbols and the first power scaling factor.

[0129] In the above embodiments, the network device can determine the first power parameter based on the first power scaling factor and the power parameter of PRACH on the non-SBFD symbol, and then determine the power parameter of PRACH on the SBFD symbol by combining the first power parameter and the first power offset value.

[0130] In conjunction with some embodiments of the second aspect, in some embodiments, the power parameter includes at least one of the following:

[0131] Maximum transmit power of the terminal equipment;

[0132] The target receive power of the network device;

[0133] Power ramp-up step size;

[0134] Maximum number of transmissions.

[0135] In the above embodiments, the power parameters may include at least one of the following: the maximum transmit power of the terminal device, the target receive power of the network device, the power ramp step size, and the maximum number of transmissions. The network device can receive the PRACH sent by the terminal device based on the power parameters of the PRACH on the SBFD symbol, thereby initiating a random access procedure.

[0136] In conjunction with some embodiments of the second aspect, in some embodiments, the power configuration information is carried in at least one of the following signaling:

[0137] DCI;

[0138] RRC message;

[0139] MAC-CE.

[0140] In the above embodiments, power configuration information can be carried in different types of signaling, which improves the configuration flexibility of power configuration information.

[0141] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0142] Based on the power parameters of the PRACH on the SBFD symbol, the receiving terminal device sends the PRACH.

[0143] According to a third aspect of the embodiments of this disclosure, a terminal device is provided, comprising:

[0144] The transceiver module is used to receive power configuration information of signals from network devices, including PRACH and / or uplink signals;

[0145] The processing module is used to determine the power parameters of PRACH on the SBFD symbol based on the power configuration information.

[0146] According to a fourth aspect of the embodiments of this disclosure, a network device is provided, comprising:

[0147] The transceiver module is used to send power configuration information of signals to the terminal device, including PRACH and / or uplink signals;

[0148] The processing module is used to determine the power parameters of PRACH on the SBFD symbol based on the power configuration information.

[0149] According to a fifth aspect of the present disclosure, a communication device is provided, which is used to perform the method described in the first aspect and optional implementations of the first aspect, or to perform the method described in the second aspect and optional implementations of the second aspect.

[0150] According to a sixth aspect of the present disclosure, a power parameter determination system is proposed, including a terminal device and a network device, wherein the terminal device is configured to implement the method described in the first aspect and an optional implementation thereof, and the network device is configured to implement the method described in the second aspect and an optional implementation thereof.

[0151] According to a seventh aspect of the present disclosure, a storage medium is provided that stores instructions, which, when executed on a communication device, cause the communication device to perform the method described in the first aspect and its optional implementations, or to perform the method described in the second aspect and its optional implementations.

[0152] According to an eighth aspect of the present disclosure, a program product is provided, comprising at least one of a program and instructions, wherein when the program and at least one of the instructions are executed by a communication device, the program implements the method described in the first aspect and the optional implementation of the first aspect, or implements the method described in the second aspect and the optional implementation of the second aspect.

[0153] According to a ninth aspect of the present disclosure, a computer program is provided that, when run on a computer, causes the computer to perform the method as described in the first aspect and optional implementations of the first aspect, or causes the computer to perform the method as described in the second aspect and optional implementations of the second aspect.

[0154] According to a tenth aspect of the present disclosure, a chip or chip system is provided. The chip or chip system includes processing circuitry configured to perform the methods described in the first aspect and optional implementations thereof, or configured to perform the methods described in the second aspect and optional implementations thereof.

[0155] It is understood that the aforementioned terminal devices, network devices, communication devices, storage media, program products, etc., are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0156] This disclosure provides a power parameter determination method, a terminal device, a network device, a storage medium, and a program product. In some embodiments, the terms "power parameter determination method" and "communication method," "power parameter configuration method," and "PRACH power parameter determination method" can be used interchangeably; the terms "power parameter determination device" and "communication device," "power parameter configuration device," and "PRACH power parameter determination device" can be used interchangeably; and the terms "power parameter determination system" and "communication system," "power parameter configuration system," and "PRACH power parameter determination system" can be used interchangeably.

[0157] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular 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 particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments. In all embodiments of this disclosure, unless otherwise specified or logically conflicting, the terminology and / or descriptions between the embodiments are consistent and can be mutually referenced. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0158] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0159] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0160] In the embodiments disclosed herein, "multiple" refers to two or more.

[0161] In some embodiments, the terms “at least one of A or B, at least one of A and B”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0162] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of whether there is a branch B); in some embodiments, B (execute B regardless of whether there is a branch A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, both A and B are executed. The same applies when there are more branches such as A, B, C, etc.

[0163] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execute A regardless of whether a branch B exists); in some embodiments, B (execute B regardless of whether a branch A exists); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, and C.

[0164] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0165] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0166] In some embodiments, terms such as “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “when…”, “if…”, etc. can be used interchangeably. These descriptions all refer to the device making a corresponding action under certain objective circumstances. They do not necessarily limit the time, nor do they require the device to make a judgment action when implementing it, nor do they mean that there must be other limitations.

[0167] In some embodiments, the terms “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 lower than,” and “above” can be used interchangeably, as can the terms “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”.

[0168] In some embodiments, devices, etc., may be interpreted as physical or virtual, and their names are not limited to those described in the embodiments. Terms such as “device,” “equipment,” “circuit,” “network element,” “network function,” “network device,” “function,” “node,” “unit,” “section,” “system,” “network,” “chip,” “chip system,” “entity,” and “subject” are interchangeable.

[0169] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0170] 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," "serving cell," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.

[0171] 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", and "client" can be used interchangeably.

[0172] In some embodiments, access network devices, core network devices, or network devices can be replaced with terminal devices. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminal devices is replaced with communication between multiple terminal devices (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the terminal devices can also be configured to have all or part of the functions of the access network devices. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminal devices (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.

[0173] In some embodiments, the terminal device may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal device.

[0174] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0175] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0176] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0177] Figure 1a is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1a, the communication system 1100 includes a terminal device 1101 and a network device 1102.

[0178] In some embodiments, terminal device 1101 includes, for example, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home, but is not limited thereto.

[0179] In some embodiments, network device 1102 may include at least one of access network device and core network device.

[0180] In some embodiments, the access network device is, for example, a node or device that connects a terminal device to a wireless network. The access network device may include at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system, but is not limited thereto.

[0181] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0182] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0183] In some embodiments, the core network equipment may be a single device, including a first network element, a second network element, etc., or it may be multiple devices or a group of devices, each including all or part of the first network element, the second network element, etc. Network elements may be virtual or physical. The core network may include, for example, at least one of the Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).

[0184] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0185] The following embodiments of this disclosure can be applied to the communication system 1100 shown in FIG1a, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1a are illustrative. The communication system may include all or some of the main bodies in FIG1a, or it may include other main bodies outside of FIG1a. The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection may be in any way, such as direct connection or indirect connection, wired connection or wireless connection.

[0186] The embodiments disclosed herein 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), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a 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, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0187] The random access procedure is a crucial step in establishing uplink synchronization and connection between terminal devices and network devices. Based on whether the preamble used by the terminal device will conflict with the preamble of other terminal devices, the random access procedure can be divided into contention-based random access (CBRA) and non-contention-based random access (CFRA).

[0188] Based on the number of steps in the random access procedure, CBRA can be further divided into CBRA with 4-step RA type and CBRA with 2-step RA type; CFRA can also be divided into CFRA with 4-step RA type and CFRA with 2-step RA type.

[0189] Figure 1b is a flowchart of CBRA provided in an embodiment of this disclosure. Referring to Figure 1b, it illustrates a four-step random access type in CBRA, including:

[0190] 1. The terminal device sends message 1 (Message 1, Msg1) to the network device.

[0191] Msg1 can also be called msg1, MSG1, etc. Msg1 is used to transmit the preamble. In some embodiments, the terms "preamble", "random access preamble", "random access preamble", "random access preamble sequence", "preamble", or "preamble sequence" can be used interchangeably.

[0192] The process of a terminal device sending Msg1 to a network device involves the terminal device randomly selecting a preamble and then sending the preamble through the PRACH channel. In some embodiments, the terms "terminal device sending Msg1 to network device," "terminal device sending preamble to network device," and "terminal device sending PRACH to network device" can be used interchangeably.

[0193] 2. The network device sends message 2 (Msg2) to the terminal device.

[0194] Msg2 can also be referred to as msg2, MSG2, random access response (RAR), etc. After sending Msg1, the terminal device can open a random access response window (ra-Response Window). Within this window, it monitors the physical downlink control channel (PDCCH) scrambled with the random access radio network temporary identifier (RA-RNTI) to obtain the physical downlink shared channel (PDSCH) scheduled by the PDCCH, which contains the RAR. In some embodiments, the RAR may include uplink synchronization information, resource allocation information, temporary identifier, etc.

[0195] 3. The terminal device sends message 3 (Msg3) to the network device.

[0196] Msg3, also known as msg3, MSG3, uplink scheduling information, etc., is the first scheduling transmission in the random access process. The signaling messages and information sent by the terminal device differ in different random access scenarios. For example, in the scenario where the terminal device first attempts to establish a connection with the network device, Msg3 may include an RRC connection request message; in the RRC connection reconstruction scenario, an RRC reconstruction request message may be sent, and so on. Msg3 is transmitted based on the physical uplink shared channel (PUSCH). In some embodiments, terms such as "terminal device sends Msg3 to network device," "terminal device sends PUSCH to network device," and "terminal device sends uplink scheduling information to network device" can be used interchangeably.

[0197] 4. The network device sends message 4 (Msg4) to the terminal device.

[0198] Msg4, also known as msg4, MSG4, etc., is used to indicate whether the terminal device has successfully connected to the network device. After sending Msg3, the terminal device starts a contention resolution timer. During the execution of this contention resolution timer, the terminal device monitors the PDCCH for receiving Msg4.

[0199] Figure 1c is a flowchart of CBRA provided in an embodiment of this disclosure. Referring to Figure 1c, it illustrates a two-step random access type in CBRA, including:

[0200] 1. The terminal device sends message A (Message A, MsgA) to the network device.

[0201] MsgA can also be called msgA, MSGA, etc. MsgA contains the preamble on PRACH and the payload on PUSCH (e.g., RRC connection request message, tracking area update message, etc.). The preamble on PRACH can also be called MsgA-PRACH, and the payload on PUSCH can also be called MsgA-PUSCH. That is to say, MsgA includes MsgA-PRACH and MsgA-PUSCH.

[0202] 2. The network device sends message B (Message B, MsgB) to the terminal device.

[0203] After receiving the MsgB, the network device will decode it and resolve contention. If the contention is resolved successfully, the network device will send the MsgB to the terminal device. The MsgB contains the result of the contention resolution and information such as the resource allocation required for subsequent uplink transmission. The terminal device can then perform subsequent operations based on the information in the MsgB to complete the random access process.

[0204] Figure 1d is a flowchart of CFRA provided in an embodiment of this disclosure. Referring to Figure 1d, it illustrates a four-step random access type in CFRA, including:

[0205] 1. The terminal device sends Msg1 to the network device.

[0206] In the four-step random access procedure of CFRA, the network device needs to configure the preamble used by Msg1 for the terminal device in advance to ensure the smooth progress of the random access procedure. In some embodiments, terms such as "terminal device sends Msg1 to network device", "terminal device sends preamble to network device", and "terminal device sends PRACH to network device" can be used interchangeably.

[0207] 2. The network device sends Msg2 to the terminal device.

[0208] After receiving Msg1, the network device will send Msg2 to the terminal device. Msg2 can also be called RAR. Msg2 contains the time advance required for the terminal device to perform uplink synchronization and other possible information.

[0209] 3. The terminal device sends Msg3 to the network device.

[0210] 4. The network device sends Msg4 to the terminal device.

[0211] In CBRA, the terminal device sends an RRC connection establishment request message as Msg3. In CFRA, since the network device has already assigned a dedicated preamble to the terminal device, the terminal device usually does not need to send Msg3 to establish an RRC connection or request resources. However, in some cases, additional information exchange is required during CFRA, so the terminal device may send Msg3.

[0212] In CBRA, Msg4 is used to indicate whether the terminal device has successfully connected to the network device. However, in CFRA, there is usually no contention, so the network device typically does not need to send Msg4. In other words, in CFRA, the Msg3 and Msg4 steps can usually be omitted.

[0213] Figure 1e is a flowchart of CFRA provided in an embodiment of this disclosure. Referring to Figure 1e, it illustrates a two-step random access type in CFRA, including:

[0214] 1. The terminal device sends MsgA to the network device.

[0215] MsgA can also be called msgA, MSGA, Random Access Request Message, etc. In the two-step random access type of CFRA, network devices need to pre-configure the preamble and PUSCH resources used by MsgA. MsgA includes the preamble on PRACH and the payload on PUSCH (e.g., RRC connection request message, tracking area update message, etc.). The preamble on PRACH can also be called MsgA-PRACH, and the payload on PUSCH can also be called MsgA-PUSCH. That is to say, MsgA includes MsgA-PRACH and MsgA-PUSCH.

[0216] 2. The network device sends MsgB to the terminal device.

[0217] MsgB can also be called msgB, MSGB, random access response message, etc. MsgB contains the time lead required for the terminal device to perform uplink synchronization and other possible information.

[0218] The random access procedure was described in the above embodiments. To improve uplink coverage and throughput, SBFD technology was introduced. In SBFD, network devices can simultaneously transmit and receive within a single TDD carrier using both uplink and downlink subbands. SBFD will be described below with reference to the accompanying drawings.

[0219] SBFD technology refers to the ability of network devices to simultaneously transmit and receive within a single carrier component (CC) using different subbands (SB), with no overlap between the subbands used for transmission and reception.

[0220] A CC (Common Controlled Signal) is divided into multiple sub-bands in the frequency domain on a downlink symbol or flexible symbol. These sub-bands include one uplink sub-band and at least one (one or two) downlink sub-bands. Network devices can transmit downlink signals in the downlink sub-band and simultaneously receive uplink signals in the uplink sub-band. The symbol category of the downlink symbol or flexible symbol can be TDD-UL-DL-ConfigCommon, TDD-UL-DL-ConfigDedicated, or indicated by DCI 2-0.

[0221] A symbol is called an SBFD symbol when it contains both downlink and uplink subbands in the frequency domain. Similarly, a time slot is called an SBFD time slot when at least one of its multiple symbols is an SBFD symbol.

[0222] Figure 1f is a schematic diagram of the SBFD time slots provided in the embodiments of this disclosure. As shown in Figure 1f, the range of CC in the frequency domain is f1-f2, and in the time domain it includes a total of five time slots from time slot #0 to time slot #4, with each time slot including 14 symbols.

[0223] In the example of Figure 1f, time slot #0 includes 14 downlink symbols, so time slot #0 is a downlink time slot; among the symbols included in time slots #1 to #3, each symbol is an SBFD symbol (that is, each symbol includes an uplink subband and a downlink subband in the frequency domain. In Figure 1f, each symbol includes 1 uplink subband and 2 downlink subbands in the frequency domain), so time slots #1 to #3 are all SBFD time slots; time slot #4 includes 14 uplink symbols, so time slot #4 is an uplink time slot.

[0224] In SBFD symbols, there may also be a guard band (GB) between the uplink subband and the downlink subband for frequency domain isolation, thereby reducing interference between downlink signals transmitted on the downlink subband and uplink signals transmitted on the uplink subband.

[0225] In SBFD symbols, the guard band and downlink subband cannot be used for uplink transmission, while the uplink subband can be used. The frequency domain range available for uplink transmission in SBFD symbols is called the uplink usable frequency domain range, and the frequency domain range unavailable for uplink transmission is called the uplink unusable frequency domain range. For non-SBFD symbols and SBFD symbols, their respective uplink usable frequency domain ranges are different; this uplink usable frequency domain range is the uplink usable frequency domain range on the CC (CC). In SBFD symbols, the uplink usable frequency domain range refers to the frequency domain range where the active bandwidth part (BWP) overlaps with the uplink usable frequency domain range on the CC.

[0226] When the terminal device is in an idle state, the initial access cell measures information such as the received signal strength of the synchronization signal block (SSB) beam and selects the optimal SSB beam. Under the optimal SSB beam direction, the terminal device transmits a PRACH (also called a PRACH signal) during the Random Access Channel Occasion (RO) to perform random access. Furthermore, in other states, the terminal device can also transmit a PRACH during the RO to perform random access.

[0227] Random access includes CBRA and CFRA. In CBRA, there are cases where multiple terminal devices use the same preamble, that is, the PRACH of two terminal devices conflict, which may cause random access to fail.

[0228] With the introduction of SBFD symbols, terminal devices can transmit PRACH in the uplink subband. Therefore, network devices can configure RO in SBFD symbols.

[0229] Figure 1g is a schematic diagram of RO configuration in SBFD symbols provided in an embodiment of this disclosure. As shown in Figure 1g, the multiple symbols include a downlink symbols, b SBFD symbols and c uplink symbols, and the range of the multiple symbols in the frequency domain is f1-f2.

[0230] For b SBFD symbols, each b SBFD symbol comprises two downlink subbands and one uplink subband in the frequency domain. The uplink subband can be configured with a Remote Access Registry (RO), allowing the terminal device to transmit PRACH from the RO. The terminal device can also transmit PDSCH from the two downlink subbands. For c uplink symbols, an RO can also be configured within the uplink symbols, allowing the terminal device to transmit PRACH from the RO.

[0231] Compared to configuring ROs only in uplink or flexible symbols, configuring ROs in SBFD symbols can increase the number of ROs. Terminal devices that can recognize SBFD symbol configurations (SBFD-aware UEs) can perform random access in ROs configured in SBFD symbols, reducing access latency and also reducing the probability of PRACH collisions between different terminal devices in CBRA.

[0232] Since the interference conditions on SBFD symbols and non-SBFD symbols differ significantly, this disclosure provides a method for determining power parameters to determine the power parameters of PRACH on SBFD symbols.

[0233] Figure 2a is an exemplary schematic diagram of a power parameter determination method provided in this disclosure. As shown in Figure 2a, the power parameter determination method includes the following steps:

[0234] Step S2101: The network device sends power configuration information of the signal to the terminal device. The power configuration information includes the power parameters of PRACH on SBFD symbols and / or the power parameters of PRACH on non-SBFD symbols. The PRACH includes the PRACH in a two-step random access process and / or the PRACH in a four-step random access process.

[0235] The network device sends power configuration information of the signal to the terminal device. This power configuration information is used by the terminal device to determine the power parameters of the PRACH on the SBFD symbol during the two-step random access process. Correspondingly, the terminal device receives the power configuration information of the signal sent by the network device.

[0236] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0237] In some embodiments, "acquire," "get," "obtain," "receive," "transmit," "bidirectional transmission," and "send and / or receive" can be used interchangeably and can be interpreted as receiving from other entities, acquiring from protocols, acquiring from higher layers, obtaining through self-processing, or autonomous implementation. Protocols include, for example, at least one of the 3GPP protocol, Wi-Fi protocol, and audio and / or video protocols.

[0238] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transfer,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0239] In some embodiments, the signals include PRACH and / or uplink signals.

[0240] In some embodiments, the PRACH includes the PRACH in a two-step random access procedure and / or the PRACH in a four-step random access procedure. The two-step random access procedure may include the CBRA with 2-step RA type exemplified in Figure 1c and / or the CFRA with 2-step RA type exemplified in Figure 1e, in which case the PRACH in the two-step random access procedure can be MsgA-PRACH. The four-step random access procedure may include the CBRA with 4-step RA type exemplified in Figure 1b and / or the CFRA with 4-step RA type exemplified in Figure 1d, in which case the PRACH in the four-step random access procedure can be Msg1.

[0241] In some embodiments, power configuration information is carried in at least one of the following signaling methods: DCI, RRC message, and MAC CE. If the power configuration information is carried in a DCI, the network device sends a DCI to the terminal device, and the terminal device receives the DCI sent by the network device, which includes power configuration information. If the power configuration information is carried in an RRC message, the network device sends an RRC message to the terminal device, and the terminal device receives the RRC message sent by the network device, which includes power configuration information. If the power configuration information is carried in a MAC CE, the network device sends a MAC CE to the terminal device, and the terminal device receives the MAC CE sent by the network device, which includes power configuration information.

[0242] In some embodiments, the power parameters of the PRACH (including PRACH in a two-step random access procedure and / or PRACH in a four-step random access procedure) include at least one of the following 1.1 to 1.4:

[0243] 1.1 Maximum transmit power of terminal equipment

[0244] In this embodiment of the disclosure, the maximum transmit power of the terminal device refers to the maximum transmit power of the terminal device for sending PRACH, which can also be referred to as the maximum power of the terminal device, etc., and can be represented by the parameter Pcmax. The maximum transmit power of the terminal device can be the upper limit of the transmit power supported by the terminal device hardware, which is usually determined by the capabilities and frequency band of the terminal device. When the terminal device sends PRACH to the network device, the transmit power of the terminal device usually does not exceed the maximum transmit power of the terminal device.

[0245] 1.2 Target Receive Power of Network Devices

[0246] In this embodiment of the disclosure, the target received power of the network device refers to the target power value that the network device expects to receive PRACH from. The target received power of the network device can be configured by the network device. The terminal device can estimate the initial transmit power of the PRACH based on the target received power of the network device and the downlink path loss value, wherein the initial transmit power of the PRACH can be the sum of the target received power of the network device and the downlink path loss value. By estimating the initial transmit power of the PRACH based on the target received power of the network device and the downlink path loss value, the terminal device can make the actual received power of the PRACH received by the network device close to the target received power of the network device.

[0247] In some embodiments, for PRACH in a two-step random access process, the target receive power of the network device can be represented by the parameter msgA-PreambleReceivedTargetPower-r16.

[0248] In some embodiments, for PRACH in a four-step random access process, the target receive power of the network device can be represented by the parameter preambleReceivedTargetPower.

[0249] 1.3 Power ramp step size

[0250] The power ramp step size refers to the increment of transmit power each time a PRACH is retransmitted. When a terminal device sends a PRACH to a network device but does not receive a random access response, the terminal device gradually increases the transmit power of the PRACH according to the power ramp step size to improve the success rate of PRACH transmission.

[0251] Taking a power ramp step of 2dB as an example, if the initial transmit power of the terminal device sending PRACH is 10dB, then after the PRACH transmission fails, the transmit power of the terminal device when retransmitting PRACH will be 12dB, 14dB and so on.

[0252] In some embodiments, for PRACH in a two-step random access process, the power ramp-up step size can be represented by the parameter msgA-PreamblePowerRampingStep-r16. If PRACH transmission fails during a two-step random access process, and the beam does not switch, the transmit power of PRACH in the next two-step random access process increases by msgA-PreamblePowerRampingStep-r16; if the beam switches, the transmit power of PRACH in the next two-step random access process remains unchanged.

[0253] In some embodiments, the power ramping step size for PRACH in a four-step random access process can be represented by the parameter powerRampingStep. If PRACH transmission fails in a four-step random access process and the beam does not switch, the transmit power of PRACH in the next four-step random access process increases by powerRampingStep; if the beam switches, the transmit power of PRACH in the next four-step random access process remains unchanged.

[0254] In some embodiments, for PRACH in a high-priority random access procedure, the power ramping step size can be represented by the parameter powerRampingStepHighPriority. If a PRACH transmission fails in a high-priority random access procedure, and the beam does not switch, the transmit power of the PRACH in the next four-step random access procedure increases by powerRampingStep; if the beam switches, the transmit power of the PRACH in the next four-step random access procedure remains unchanged.

[0255] 1.4 Maximum number of transmissions

[0256] The maximum number of transmissions refers to the maximum number of times a terminal device is allowed to send a PRACH message. If a terminal device fails to send a PRACH message, it can retransmit it until the transmission is successful or the maximum number of transmissions is reached. Once the maximum number of PRACH transmissions is reached, the terminal device determines that the random access has failed. Setting a maximum number of transmissions avoids infinite attempts.

[0257] In some embodiments, the maximum number of transmissions for PRACH in a two-step random access process can be represented by the parameter preambleTransMax-r16.

[0258] In some embodiments, the maximum number of transmissions for PRACH in a four-step random access process can be represented by the parameter preambleTransMax.

[0259] In some embodiments, the power configuration information of the signal includes at least one of the following 2.1 to 2.2:

[0260] 2.1 Power parameters of PRACH on the SBFD symbol.

[0261] In some embodiments, the power parameters of PRACH on SBFD symbols include the power parameters of PRACH on SBFD symbols in a two-step random access process, and / or, the power parameters of PRACH on SBFD symbols in a four-step random access process.

[0262] In some embodiments, the power parameters of PRACH on SBFD symbols in a two-step random access process include at least one of the following: the maximum transmit power of PRACH transmitted by the terminal device in the two-step random access process on SBFD symbols, the target receive power of PRACH received by the network device in the two-step random access process on SBFD symbols, the power ramp-up step size of PRACH transmission on SBFD symbols in the two-step random access process, and the maximum number of transmissions of PRACH on SBFD symbols in the two-step random access process.

[0263] In some embodiments, the power parameters of PRACH on SBFD symbols in the four-step random access process include at least one of the following: the maximum transmit power of PRACH transmitted by the terminal device in the four-step random access process on SBFD symbols, the target receive power of PRACH received by the network device in the four-step random access process on SBFD symbols, the power ramp-up step size of PRACH transmission on SBFD symbols in the four-step random access process, and the maximum number of transmissions of PRACH on SBFD symbols in the four-step random access process.

[0264] 2.2 Power parameters of PRACH on non-SBFD symbols.

[0265] In some embodiments, the power parameters of PRACH on non-SBFD symbols include the power parameters of PRACH on non-SBFD symbols in a two-step random access process, and / or, the power parameters of PRACH on non-SBFD symbols in a four-step random access process.

[0266] In some embodiments, the power parameters of PRACH in the two-step random access process on non-SBFD symbols include at least one of the following: the maximum transmit power of the terminal device transmitting PRACH in the two-step random access process on non-SBFD symbols, the target receive power of the network device receiving PRACH in the two-step random access process on non-SBFD symbols, the power ramp-up step size of PRACH transmission in the two-step random access process on non-SBFD symbols, and the maximum number of transmissions of PRACH in the two-step random access process on non-SBFD symbols.

[0267] In some embodiments, the power parameters of PRACH in the four-step random access process on non-SBFD symbols include at least one of the following: the maximum transmit power of the terminal device transmitting PRACH in the four-step random access process on non-SBFD symbols, the target receive power of the network device receiving PRACH in the four-step random access process on non-SBFD symbols, the power ramp-up step size of PRACH transmission in the four-step random access process on non-SBFD symbols, and the maximum number of transmissions of PRACH in the four-step random access process on non-SBFD symbols.

[0268] In step S2102, the terminal device determines the power parameters of PRACH on the SBFD symbol during the two-step random access process based on the power configuration information and indication information.

[0269] In some embodiments, the indication information is used to indicate the priority of power parameters in the power configuration information. For example, the power configuration information may include at least one of the following: power parameters of PRACH on SBFD symbols in a two-step random access process, power parameters of PRACH on SBFD symbols in a four-step random access process, power parameters of PRACH on non-SBFD symbols in a two-step random access process, and power parameters of PRACH on non-SBFD symbols in a four-step random access process, and the indication information is used to indicate the priority of the above power parameters.

[0270] In some embodiments, the order of priority of values ​​from high to low is as follows:

[0271] The power parameters of PRACH on SBFD symbols in a two-step random access process (denoted as the first value), the power parameters of PRACH on non-SBFD symbols in a two-step random access process (denoted as the second value), the power parameters of PRACH on SBFD symbols in a four-step random access process (denoted as the third value), and the power parameters of PRACH on non-SBFD symbols in a four-step random access process (denoted as the fourth value).

[0272] In this implementation, if the power configuration information includes a first value, the terminal device determines the power parameter of PRACH on the SBFD symbol in the two-step random access process as the first value based on the power configuration information and the indication information.

[0273] If the power configuration information does not include the first value, but includes the second value, then the terminal device determines the power parameter of PRACH on the SBFD symbol in the two-step random access process to be the second value.

[0274] If the power configuration information does not include the first and second values, but includes the third value, then the terminal device determines the power parameter of PRACH on the SBFD symbol in the two-step random access process to be the third value.

[0275] If the power configuration information does not include the first, second, and third values, but includes the fourth value, then the terminal device determines the power parameter of PRACH on the SBFD symbol in the two-step random access process to be the fourth value.

[0276] In some embodiments, the order of priority of values ​​from high to low is as follows:

[0277] The power parameters of PRACH on SBFD symbols in a two-step random access process (denoted as the first value), the power parameters of PRACH on SBFD symbols in a four-step random access process (denoted as the third value), the power parameters of PRACH on non-SBFD symbols in a two-step random access process (denoted as the second value), and the power parameters of PRACH on non-SBFD symbols in a four-step random access process (denoted as the fourth value).

[0278] In this implementation, if the power configuration information includes a first value, the terminal device determines the power parameter of PRACH on the SBFD symbol in the two-step random access process as the first value based on the power configuration information and the indication information.

[0279] If the power configuration information does not include the first value, but includes the third value, then the terminal device determines the power parameter of PRACH on the SBFD symbol in the two-step random access process to be the third value.

[0280] If the power configuration information does not include the first and third values, but includes the second value, then the terminal device determines the power parameter of PRACH on the SBFD symbol in the two-step random access process as the second value.

[0281] If the power configuration information does not include the first, second, and third values, but includes the fourth value, then the terminal device determines the power parameter of PRACH on the SBFD symbol in the two-step random access process to be the fourth value.

[0282] In some embodiments, the PRACH resources in a two-step random access procedure and the PRACH resources in a four-step random access procedure are within the same BWP.

[0283] In some embodiments, the power configuration information of the signal may take into account the following constraint 1, which includes at least one of the following constraints 1-1 to 1-3:

[0284] Constraint 1-1: In some embodiments, the BWP includes PRACH resources in a two-step random access process and PRACH resources in a four-step random access process. The power parameters of the PRACH in the two-step random access process on SBFD symbols and on non-SBFD symbols may not be configured, i.e., they are optional configurations.

[0285] For example, the power configuration information may not include the power parameters of PRACH on SBFD symbols and power parameters on non-SBFD symbols in the two-step random access process. The terminal device / network device can determine the power parameters of PRACH on SBFD symbols in the two-step random access process based on the power parameters of PRACH on SBFD symbols in the four-step random access process, and / or the power parameters of PRACH on non-SBFD symbols in the four-step random access process.

[0286] Constraint 1-2: In some embodiments, only PRACH resources in the two-step random access process are available in the BWP. The power parameters of the PRACH in the two-step random access process on non-SBFD symbols must be configured, while the power parameters of the PRACH in the two-step random access process on SBFD symbols are optional or mandatory.

[0287] For example, the power configuration information may not include the power parameters of the PRACH on the SBFD symbol in the two-step random access process. The terminal device / network device can determine the power parameters of the PRACH on the SBFD symbol in the two-step random access process based on the power parameters of the PRACH on the non-SBFD symbol in the two-step random access process.

[0288] Constraint 1-3: In some embodiments, the first PRACH resource is used for two-step CFRA, and the second PRACH resource is used for two-step CBRA. The power parameters of the PRACH for two-step CFRA on SBFD symbols and on non-SBFD symbols are not configured in the first PRACH resource. The terminal device / network device determines the power parameters of the PRACH for two-step CFRA on SBFD symbols and on non-SBFD symbols in the first PRACH resource based on the power parameters of the PRACH for two-step CBRA on SBFD symbols and on non-SBFD symbols in the second PRACH resource.

[0289] For example, the power configuration information may not include the power parameters of the PRACH on the SBFD symbol for the two-step CFRA. The terminal device / network device may determine the power parameters of the PRACH on the SBFD symbol for the two-step CFRA as the power parameters of the PRACH on the SBFD symbol for the two-step CFRA.

[0290] For example, the power configuration information may not include the power parameters of the PRACH of the two-step CFRA on non-SBFD symbols. The terminal device / network device may determine the power parameters of the PRACH of the two-step CFRA on non-SBFD symbols as the power parameters of the PRACH of the two-step CFRA on non-SBFD symbols.

[0291] In some embodiments, the configuration of the first power parameter may take into account the following constraint 2, which includes at least one of the following constraints 2-1 to 2-3:

[0292] Constraint 2-1: In some embodiments, the power parameters of PRACH on SBFD symbols and on non-SBFD symbols during the two-step random access process may not be configured, i.e., they are optional configurations.

[0293] For example, if the PRACH resources in the two-step random access process are configured in AdditionalRACH-Config (configuration information), the PRACH resources in the four-step random access process in the above scheme are configured in the same AdditionalRACH-Config (and also in the same BWP).

[0294] For example, if the PRACH resource configuration in the two-step random access process is not in AdditionalRACH-Config, the PRACH resource configuration in the four-step random access process in the above scheme is in the same BWP.

[0295] For example, the power configuration information may not include the power parameters of PRACH on SBFD symbols and power parameters on non-SBFD symbols in the two-step random access process. The terminal device / network device can determine the power parameters of PRACH on SBFD symbols in the two-step random access process based on the power parameters of PRACH on SBFD symbols in the four-step random access process, and / or the power parameters of PRACH on non-SBFD symbols in the four-step random access process.

[0296] Constraint 2-2: In some embodiments, the BWP contains only PRACH resources in the two-step random access procedure and not in the four-step random access procedure; or, the ROs of the PRACH resources in the two-step random access procedure and the PRACH resources in the four-step random access procedure are configured separately. In this case, the power parameters of the PRACH on non-SBFD symbols in the two-step random access procedure must be configured, while the power parameters of the PRACH on SBFD symbols in the two-step random access procedure are optional or mandatory.

[0297] For example, the power configuration information may not include the power parameters of the PRACH on the SBFD symbol in the two-step random access process. The terminal device / network device can determine the power parameters of the PRACH on the SBFD symbol in the two-step random access process based on the power parameters of the PRACH on the non-SBFD symbol in the two-step random access process.

[0298] Constraint 2-3: In some embodiments, the first PRACH resource is used for two-step CFRA, and the second PRACH resource is used for two-step CBRA. The power parameters of the PRACH for two-step CFRA on SBFD symbols and on non-SBFD symbols are not configured in the first PRACH resource. The terminal device / network device determines the power parameters of the PRACH for two-step CFRA on SBFD symbols and on non-SBFD symbols in the first PRACH resource based on the power parameters of the PRACH for two-step CBRA on SBFD symbols and on non-SBFD symbols in the second PRACH resource.

[0299] For example, the power configuration information may not include the power parameters of the PRACH on the SBFD symbol for the two-step CFRA. The terminal device / network device may determine the power parameters of the PRACH on the SBFD symbol for the two-step CFRA as the power parameters of the PRACH on the SBFD symbol for the two-step CFRA.

[0300] For example, the power configuration information may not include the power parameters of the PRACH of the two-step CFRA on non-SBFD symbols. The terminal device / network device may determine the power parameters of the PRACH of the two-step CFRA on non-SBFD symbols as the power parameters of the PRACH of the two-step CFRA on non-SBFD symbols.

[0301] In some embodiments, different constraints are considered for different power parameters. For example, the target received power of the network device may consider constraints 1-1, 1-2, and 1-3; the power ramp step size may consider constraints 2-1, 2-2, and 2-3; and the maximum number of transmissions may consider constraints 2-1 and 2-2.

[0302] In step S2103, the network device determines the power parameters of PRACH on the SBFD symbol during the two-step random access process based on the power configuration information and indication information.

[0303] For a description of the instruction information, please refer to the relevant description of step S2102 in Figure 2a, which will not be repeated here.

[0304] The network device can determine the priority of the power parameter values ​​in the power configuration information based on the indication information. By combining the priority values ​​and the power configuration information, the power parameters of PRACH on the SBFD symbol in the two-step random access process can be determined.

[0305] The implementation method of determining the power parameters of PRACH on the SBFD symbol in the two-step random access process by the network device can be found in the relevant introduction of step S2102 in Figure 2a, which will not be repeated here.

[0306] Step S2104: The terminal device sends the PRACH in the two-step random access process to the network device according to the power parameters of the PRACH on the SBFD symbol in the two-step random access process.

[0307] When the terminal device determines the power parameters of the PRACH in the two-step random access procedure on the SBFD symbol, if the RO of the two-step random access procedure is on the SBFD symbol, the terminal device sends the PRACH of the two-step random access procedure to the network device based on the power parameters of the PRACH in the two-step random access procedure on the SBFD symbol. Correspondingly, the network device receives the PRACH of the two-step random access procedure sent by the terminal device based on the power parameters of the PRACH in the two-step random access procedure on the SBFD symbol.

[0308] In some embodiments, the RO of a two-step random access procedure on SBFD symbols means that the symbols included in the RO in the time domain are all SBFD symbols.

[0309] In some embodiments, the RO of a two-step random access procedure on SBFD symbols means that the RO includes at least one SBFD symbol among the symbols it comprises in the time domain.

[0310] The communication method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2104. For example, step S2101 + step S2102 may be implemented as an independent embodiment, and step S2101 + step S2102 + step S2103 may be implemented as an independent embodiment, but is not limited thereto.

[0311] In some embodiments, steps S2103 and S2104 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0312] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0313] Figure 2b is an exemplary schematic diagram of a power parameter determination method provided in this disclosure. As shown in Figure 2b, the power parameter determination method includes the following steps:

[0314] Step S2201: The network device sends power configuration information of the signal to the terminal device. The power configuration information includes the power parameters of PRACH on SBFD symbols and / or the power parameters of PRACH on non-SBFD symbols. PRACH includes PRACH in a two-step random access process and / or PRACH in a four-step random access process.

[0315] The network device sends power configuration information of the signal to the terminal device. This power configuration information is used by the terminal device to determine the power parameters of PRACH on the SBFD symbol during the four-step random access process. Correspondingly, the terminal device receives the power configuration information of the signal sent by the network device.

[0316] In some embodiments, the signals include PRACH and / or uplink signals. A description of the signals can be found in the relevant description of step S2101 in Figure 2a, and will not be repeated here.

[0317] In some embodiments, power configuration information is carried in at least one of the following signaling methods: DCI, RRC message, MAC CE.

[0318] In some embodiments, the power parameters of PRACH (PRACH includes PRACH in a two-step random access process and / or PRACH in a four-step random access process) include at least one of the following: the maximum transmit power of the terminal device, the target receive power of the network device, the power ramp step size, and the maximum number of transmissions. For a description of the PRACH power parameters, please refer to the relevant descriptions in steps 1.1 to 1.4 of Figure 2a, S2101, which will not be repeated here.

[0319] In some embodiments, the power configuration information of the signal includes the power parameters of PRACH on SBFD symbols, and / or the power parameters of PRACH on non-SBFD symbols. For a description of the power configuration information, please refer to the relevant descriptions in steps 2.1 to 2.2 of Figure 2a step S2101, which will not be repeated here.

[0320] In step S2202, the terminal device determines the power parameters of PRACH on the SBFD symbol in the four-step random access process based on the power configuration information and indication information.

[0321] For a description of the instruction information, please refer to the relevant description in step S2102 of Figure 2a, which will not be repeated here.

[0322] In some embodiments, the power configuration information includes at least one of the following: the power parameter of the PRACH on the SBFD symbol during a two-step random access process (denoted as a first value), the power parameter of the PRACH on the non-SBFD symbol during a two-step random access process (denoted as a second value), the power parameter of the PRACH on the SBFD symbol during a four-step random access process (denoted as a third value), and the power parameter of the PRACH on the non-SBFD symbol during a four-step random access process (denoted as a fourth value). Wherein, the power parameter of the PRACH on the SBFD symbol during a four-step random access process is either the third value or the fourth value.

[0323] In some embodiments, if the power configuration information includes a third value, the terminal device determines that the power parameter of PRACH on the SBFD symbol in the four-step random access process is the third value.

[0324] In some embodiments, if the power configuration information does not include a third value but includes a fourth value, the terminal device determines the power parameter of PRACH on the SBFD symbol in the four-step random access process to be the fourth value.

[0325] In step S2203, the network device determines the power parameters of PRACH on the SBFD symbol in the four-step random access process based on the power configuration information.

[0326] The implementation method of PRACH power parameters on SBFD symbols in the four-step random access process determined by the network device can be found in the relevant introduction of step S2202 in Figure 2b, which will not be repeated here.

[0327] Step S2204: The terminal device sends the PRACH in the four-step random access process to the network device according to the power parameters of the PRACH on the SBFD symbol in the four-step random access process.

[0328] When the terminal device determines the power parameters of the PRACH in the four-step random access procedure on the SBFD symbol, if the RO of the four-step random access procedure is on the SBFD symbol, the terminal device sends the PRACH in the four-step random access procedure to the network device according to the power parameters of the PRACH in the four-step random access procedure on the SBFD symbol. Correspondingly, the network device receives the PRACH in the four-step random access procedure sent by the terminal device according to the power parameters of the PRACH in the four-step random access procedure on the SBFD symbol.

[0329] In some embodiments, the RO of the four-step random access procedure on SBFD symbols means that the symbols included in the RO in the time domain are all SBFD symbols.

[0330] In some embodiments, the RO of the four-step random access procedure on SBFD symbols means that the RO includes at least one SBFD symbol among the symbols in the time domain.

[0331] The communication method involved in the embodiments of this disclosure may include at least one of steps S2201 to S2204. For example, step S2201 + step S2202 may be implemented as an independent embodiment, and step S2201 + step S2202 + step S2203 may be implemented as an independent embodiment, but is not limited thereto.

[0332] In some embodiments, steps S2203 and S2204 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0333] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0334] Figure 2c is an exemplary schematic diagram of a power parameter determination method provided in this disclosure. As shown in Figure 2c, the power parameter determination method includes the following steps:

[0335] Step S2301: The network device sends power configuration information of the signal to the terminal device, the signal including PRACH and / or uplink signal.

[0336] The network device sends power configuration information of the signal to the terminal device. This power configuration information is used by the terminal device to determine the power parameters of the PRACH on the SBFD symbol. Correspondingly, the terminal device receives the power configuration information of the signal sent by the network device.

[0337] In some embodiments, the signals include PRACH and / or uplink signals. A description of the signals can be found in the relevant description of step S2101 in Figure 2a, and will not be repeated here.

[0338] In some embodiments, power configuration information is carried in at least one of the following signaling methods: DCI, RRC message, MAC CE.

[0339] In some embodiments, the power parameters of PRACH (PRACH includes PRACH in a two-step random access process and / or PRACH in a four-step random access process) include at least one of the following: the maximum transmit power of the terminal device, the target receive power of the network device, the power ramp step size, and the maximum number of transmissions. For a description of the PRACH power parameters, please refer to the relevant descriptions in steps 1.1 to 1.4 of Figure 2a, S2101, which will not be repeated here.

[0340] In step S2302, the terminal device determines the power parameters of PRACH on the SBFD symbol based on the power configuration information.

[0341] In some embodiments, the power configuration information of the signal includes at least one of the following 3.1 to 3.5:

[0342] 3.1 Power parameters of PRACH on the SBFD symbol.

[0343] For an introduction to the power parameters of PRACH on the SBFD symbol, please refer to the relevant introduction in step 2.1 of S2101 in Figure 2a, which will not be repeated here.

[0344] 3.2 Power parameters of PRACH on non-SBFD symbols.

[0345] For an introduction to the power parameters and power configuration information of PRACH on non-SBFD symbols, please refer to the relevant introduction in step 2.2 of step S2101 in Figure 2a, which will not be repeated here.

[0346] 3.3 First Relationship.

[0347] The first correlation is the relationship between the power parameters of PRACH on SBFD symbols and the power parameters of PRACH on non-SBFD symbols. Given the power parameters of PRACH on non-SBFD symbols, the power parameters of PRACH on SBFD symbols can be determined based on these power parameters and the first correlation.

[0348] In some embodiments, the first association includes at least one of the following ab:

[0349] a. The first power scaling factor of PRACH.

[0350] In some embodiments, the first power scaling factor may be the ratio between the power parameters of PRACH on SBFD symbols and the power parameters of PRACH on non-SBFD symbols, used to reflect a first correlation between the power parameters of PRACH on SBFD symbols and the power parameters of PRACH on non-SBFD symbols.

[0351] In some embodiments, if the first association includes a first power scaling factor, the terminal device can determine the power parameters of the PRACH on the SBFD symbol based on the following equation (1): Q2=a1*Q1 (1)

[0352] Where Q2 is the power parameter of PRACH on SBFD symbols, a1 is the first power scaling factor, and Q1 is the power parameter of PRACH on non-SBFD symbols.

[0353] b. The first power offset value of PRACH.

[0354] In some embodiments, the first power offset value may be the difference between the power parameters of PRACH on SBFD symbols and the power parameters of PRACH on non-SBFD symbols, which reflects the first correlation between the power parameters of PRACH on SBFD symbols and the power parameters of PRACH on non-SBFD symbols.

[0355] In some embodiments, if the first association includes a first power offset value, the terminal device can determine the power parameter of PRACH on the SBFD symbol based on the following equation (2): Q2=Q1+a2 (2)

[0356] Where Q2 is the power parameter of PRACH on SBFD symbols, a2 is the first power offset value, and Q1 is the power parameter of PRACH on non-SBFD symbols.

[0357] In some embodiments, the power parameter of PRACH on SBFD symbols is the sum of a first power parameter and a first power offset value, wherein: the first power parameter is the product of the power parameter of PRACH on non-SBFD symbols and a first power scaling factor.

[0358] If the first association includes the first power scaling factor and the first power offset value, the terminal device can determine the power parameters of PRACH on the SBFD symbol based on the following equation (3): Q2=a1*Q1+a2 (3)

[0359] Where Q2 is the power parameter of PRACH on SBFD symbols, a1 is the first power scaling factor, a2 is the first power offset value, and Q1 is the power parameter of PRACH on non-SBFD symbols.

[0360] The following is a specific example to illustrate this.

[0361] Regarding the power parameter of the terminal device's maximum transmit power, if the first power scaling factor of PRACH is 1 and the first power offset value is offset#9, then:

[0362] Pcmax_SBFD=Pcmax_non-SBFD+offset#9

[0363] Wherein, Pcmax_SBFD is the maximum transmit power of the terminal device for transmitting PRACH on SBFD symbols, and Pcmax_non-SBFD is the maximum transmit power of the terminal device for transmitting PRACH on non-SBFD symbols.

[0364] Regarding the target received power parameter of the network device, if the first power scaling factor of PRACH is 1 and the first power offset value is offset#10, then:

[0365] preambleReceivedTargetPower_SBFD=preambleReceivedTargetPower_non-SBFD+offset#10

[0366] Wherein, preambleReceivedTargetPower_SBFD is the target receive power of the network device for receiving PRACH on SBFD symbols, and preambleReceivedTargetPower_non-SBFD is the target receive power of the network device for receiving PRACH on non-SBFD symbols.

[0367] Regarding the power ramp step size, if the first power scaling factor of PRACH is 1 and the first power offset value is offset#11, then:

[0368] powerRampingStep_SBFD=powerRampingStep_non-SBFD+offset#11

[0369] Wherein, powerRampingStep_SBFD is the power ramping step size of PRACH on SBFD symbols, and powerRampingStep_non-SBFD is the power ramping step size of PRACH on non-SBFD symbols.

[0370] Regarding the maximum number of transmissions, if the first power scaling factor of PRACH is 1 and the first power offset is offset#12, then:

[0371] preambleTransMax_SBFD=preambleTransMax+offset#12

[0372] Wherein, preambleTransMax_SBFD is the maximum number of PRACH transmissions on SBFD symbols, and preambleTransMax is the maximum number of PRACH transmissions on non-SBFD symbols.

[0373] In some embodiments, at least one of offset#9, offset#10, offset#11, and offset#12 is not 0.

[0374] Considering the different structures of the uplink signal and PRACH, the power difference values ​​of different signals may be different. Therefore, by configuring the first association relationship, the power parameters of PRACH on SBFD symbols are determined based on the first association relationship and the power parameters of PRACH on non-SBFD symbols, so that the power parameters of PRACH on SBFD symbols are more suitable for PRACH.

[0375] 3.4 Second Relationship.

[0376] The second correlation is the correlation between the power parameters of the uplink signal on SBFD symbols and the power parameters of the uplink signal on non-SBFD symbols.

[0377] 3.5 Third Relationship.

[0378] The third correlation is the correlation between PRACH and the uplink signal. Given that the power parameters of PRACH on non-SBFD symbols, the second correlation, and the third correlation are known, the first correlation can be determined based on the second and third correlations. Then, based on the power parameters of PRACH on non-SBFD symbols and the first correlation, the power parameters of PRACH on SBFD symbols can be determined.

[0379] In some embodiments, the second association includes a second power scaling factor of the uplink signal and / or a second power offset value of the uplink signal; the third association includes the association between the second power scaling factor of the uplink signal and the first power scaling factor of the PRACH; and / or the association between the second power offset value of the uplink signal and the first power offset value of the PRACH. For details, please refer to the relevant description in the following cf:

[0380] c. The second power scaling factor for the uplink signal.

[0381] In some embodiments, the second power scaling factor may be the ratio between the power parameter of the uplink signal on SBFD symbols and the power parameter of the uplink signal on non-SBFD symbols, used to reflect a second correlation between the power parameter of the uplink signal on SBFD symbols and the power parameter of the uplink signal on non-SBFD symbols.

[0382] d. The correlation between the second power scaling factor of the uplink signal and the first power scaling factor of the PRACH.

[0383] In some embodiments, the association between the second power scaling factor and the first power scaling factor may include at least one of the following: a scaling factor between the first power scaling factor and the second power scaling factor, and an offset value between the first power scaling factor and the second power scaling factor. When the second power scaling factor is known, the first power scaling factor can be determined based on the association between the second power scaling factor and the first power scaling factor.

[0384] In some embodiments, if the correlation between the second power scaling factor and the first power scaling factor includes a scaling factor between the first power scaling factor and the second power scaling factor, then the terminal device can determine the first power scaling factor based on the following equation (4): a1=c*b1 (4)

[0385] Where a1 is the first power scaling factor, b1 is the second power scaling factor, and c is the scaling factor between the first power scaling factor and the second power scaling factor.

[0386] In some embodiments, if the relationship between the second power scaling factor and the first power scaling factor includes the offset between the first power scaling factor and the second power scaling factor, the terminal device can determine the first power scaling factor based on the following equation (5): a1=b1+d (5)

[0387] Where a1 is the first power scaling factor, b1 is the second power scaling factor, and d is the offset between the first power scaling factor and the second power scaling factor.

[0388] In some embodiments, if the relationship between the second power scaling factor and the first power scaling factor includes the scaling factor between the first power scaling factor and the second power scaling factor, and the offset value between the first power scaling factor and the second power scaling factor, then the terminal device can determine the first power scaling factor based on the following formula (6): a1=c*b1+d (6)

[0389] Where a1 is the first power scaling factor, b1 is the second power scaling factor, c is the scaling factor between the first power scaling factor and the second power scaling factor, and d is the offset value between the first power scaling factor and the second power scaling factor.

[0390] After determining the first power scaling factor, the terminal device can determine the power parameters of PRACH on the SBFD symbol according to the above formula (1) or formula (3).

[0391] e. The second power offset value of the uplink signal.

[0392] In some embodiments, the second power offset value may be the difference between the power parameter of the uplink signal on the SBFD symbol and the power parameter of the uplink signal on the non-SBFD symbol, which is used to reflect the second correlation between the power parameter of the uplink signal on the SBFD symbol and the power parameter of the uplink signal on the non-SBFD symbol.

[0393] f. The correlation between the second power offset value of the uplink signal and the first power offset value of the PRACH.

[0394] In some embodiments, the correlation between the second power offset value and the first power offset value may include at least one of the following: a scaling factor between the first power offset value and the second power offset value, and an offset value between the first power offset value and the second power offset value. When the second power offset value is known, the first power offset value can be determined based on the correlation between the second power offset value and the first power offset value.

[0395] In some embodiments, if the correlation between the second power offset value and the first power offset value includes a scaling factor between the first power offset value and the second power offset value, the terminal device can determine the first power offset value based on the following equation (7): a2=m*b2 (7)

[0396] Where a2 is the first power offset value, b2 is the second power offset value, and m is the scaling factor between the first power offset value and the second power offset value.

[0397] In some embodiments, if the correlation between the second power offset value and the first power offset value includes the offset between the first power offset value and the second power offset value, then the terminal device can determine the first power scaling factor based on the following equation (8): a2=b2+n (8)

[0398] Where a2 is the first power offset value, b2 is the second power offset value, and n is the offset value between the first power offset value and the second power offset value.

[0399] In some embodiments, if the relationship between the second power offset value and the first power offset value includes a scaling factor between the first power offset value and the second power offset value, and an offset value between the first power offset value and the second power offset value, then the terminal device can determine the first power scaling factor based on the following equation (9): a2=m*b2+n (9)

[0400] Where a2 is the first power offset value, b2 is the second power offset value, m is the scaling factor between the first power offset value and the second power offset value, and n is the offset value between the first power offset value and the second power offset value.

[0401] After determining the first power scaling factor, the terminal device can determine the power parameters of PRACH on the SBFD symbol according to the above formula (2) or formula (3).

[0402] The following is a specific example to illustrate this.

[0403] Regarding the power parameter of the terminal device's maximum transmit power, if the first power scaling factor of PRACH is 1 and the second power offset value of the uplink signal is offset#1, then:

[0404] offset#2 = A1 * offset#1 + A2

[0405] Pcmax_SBFD=Pcmax_non-SBFD+offset#2

[0406] Wherein, Pcmax_SBFD is the maximum transmit power of the terminal device for PRACH transmission on SBFD symbols, and Pcmax_non-SBFD is the maximum transmit power of the terminal device for PRACH transmission on non-SBFD symbols. A1 and A2 can be predefined values, values ​​configured by higher layers, or values ​​dynamically indicated by the network device.

[0407] Regarding the target received power parameter of the network device, if the first power scaling factor of PRACH is 1 and the second power offset value of the uplink signal is offset#3, then:

[0408] offset#4 = B1 * offset#3 + B2

[0409] preambleReceivedTargetPower_SBFD=preambleReceivedTargetPower_non-SBFD+offset#4

[0410] Wherein, preambleReceivedTargetPower_SBFD is the target receive power of the network device for receiving PRACH on SBFD symbols, and preambleReceivedTargetPower_non-SBFD is the target receive power of the network device for receiving PRACH on non-SBFD symbols. B1 and B2 can be predefined values, values ​​configured by higher layers, or values ​​dynamically indicated by the network device.

[0411] Regarding the power ramp step size, if the first power scaling factor of PRACH is 1 and the second power offset of the uplink signal is offset#5, then:

[0412] offset#6 = C1 * offset#5 + C2

[0413] powerRampingStep_SBFD=powerRampingStep_non-SBFD+offset#6

[0414] Wherein, powerRampingStep_SBFD is the power ramping step size of PRACH on SBFD symbols, and powerRampingStep_non-SBFD is the power ramping step size of PRACH on non-SBFD symbols. C1 and C2 can be predefined values, values ​​configured by higher layers, or values ​​dynamically indicated by network devices.

[0415] Regarding the maximum number of transmissions, if the first power scaling factor of PRACH is 1 and the second power offset value of the uplink signal is offset#7, then:

[0416] offset#8 = D1 * offset#7 + D2

[0417] preambleTransMax_SBFD=preambleTransMax+offset#8

[0418] Wherein, preambleTransMax_SBFD is the maximum number of PRACH transmissions on SBFD symbols, and preambleTransMax is the maximum number of PRACH transmissions on non-SBFD symbols. D1 and D2 can be predefined values, values ​​configured by higher layers, or values ​​dynamically indicated by the network device.

[0419] Optionally, when the power parameters of PRACH are not configured differently on SBFD and non-SBFD symbols, a new parameter can be added to indicate whether to calculate the power parameter difference of PRACH on SBFD and non-SBFD symbols (i.e., the first correlation relationship) based on the difference in power parameters of uplink signals on SBFD and non-SBFD symbols (i.e., the second correlation relationship).

[0420] Optionally, when calculating the power parameter difference of PRACH on SBFD and non-SBFD symbols based on the difference in power parameters of uplink signals on SBFD and non-SBFD symbols, at least one of the following power parameters can be calculated differentially: the maximum transmit power of the terminal device, the target receive power of the network device, the power ramp step size, and the maximum number of transmissions.

[0421] In step S2303, the network device determines the power parameters of PRACH on the SBFD symbol based on the power configuration information.

[0422] The implementation method of determining the power parameters of PRACH on the SBFD symbol by the network device can be found in the relevant description of step S2302 in Figure 2c, which will not be repeated here.

[0423] In step S2304, the terminal device sends a PRACH to the network device based on the power parameters of the PRACH on the SBFD symbol.

[0424] The terminal device determines the power parameters of the PRACH on the SBFD symbol. If the RO is on the SBFD symbol, the terminal device sends the PRACH to the network device based on the power parameters of the PRACH on the SBFD symbol. Correspondingly, the network device receives the PRACH sent by the terminal device based on the power parameters of the PRACH on the SBFD symbol.

[0425] In some embodiments, RO in SBFD notation means that the symbols included in the RO in the time domain are all SBFD symbols.

[0426] In some embodiments, RO on SBFD symbol means that among the symbols included in the time domain, RO includes at least one SBFD symbol.

[0427] The communication method involved in the embodiments of this disclosure may include at least one of steps S2301 to S2304. For example, step S2301 + step S2302 may be implemented as an independent embodiment, and step S2301 + step S2302 + step S2303 may be implemented as an independent embodiment, but is not limited thereto.

[0428] In some embodiments, steps S2303 and S2304 are optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0429] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0430] Figure 3 is an exemplary schematic diagram of a power parameter determination method provided in this disclosure. As shown in Figure 3, the power parameter determination method includes the following steps:

[0431] In step S3101, the network device sends power configuration information of the signal to the terminal device, the signal including PRACH and / or uplink signal.

[0432] The network device sends power configuration information of the signal to the terminal device. This power configuration information is used by the terminal device to determine the power parameters of the PRACH on the SBFD symbol. Correspondingly, the terminal device receives the power configuration information of the signal sent by the network device.

[0433] In some embodiments, the signals include PRACH and / or uplink signals.

[0434] In some embodiments, PRACH includes PRACH in a two-step random access procedure and / or PRACH in a four-step random access procedure.

[0435] In step S3102, the terminal device determines the power parameters of PRACH on the SBFD symbol based on the power configuration information.

[0436] In some embodiments, the power configuration information includes at least one of the following: power parameters of PRACH on SBFD symbols; power parameters of PRACH on non-SBFD symbols; a first association relationship, which is the association relationship between the power parameters of PRACH on SBFD symbols and the power parameters of PRACH on non-SBFD symbols; and a second association relationship, which is the association relationship between the power parameters of uplink signals on SBFD symbols and the power parameters of uplink signals on non-SBFD symbols.

[0437] In some embodiments, the terminal device determines the implementation method of the power parameters of PRACH on the SBFD symbol based on the power configuration information. For details, please refer to the relevant description of step S2102 in Figure 2a, which will not be repeated here.

[0438] In some embodiments, the terminal device determines the implementation method of the power parameters of PRACH on the SBFD symbol based on the power configuration information. For details, please refer to the relevant description of step S2202 in Figure 2b, which will not be repeated here.

[0439] In some embodiments, the terminal device determines the implementation method of the power parameters of PRACH on the SBFD symbol based on the power configuration information. For details, please refer to the relevant description of step S2302 in Figure 2c, which will not be repeated here.

[0440] In step S3103, the network device determines the power parameters of PRACH on the SBFD symbol based on the power configuration information.

[0441] The implementation method of determining the power parameters of PRACH on the SBFD symbol by the network device can be found in the relevant description of step S3102 in Figure 3, which will not be repeated here.

[0442] The communication method involved in the embodiments of this disclosure may include at least one of steps S3101 to S3103. For example, steps S3101 and S3102 may be implemented as a standalone embodiment, but are not limited thereto.

[0443] In some embodiments, step S3103 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0444] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0445] The terminal device determines the power parameters of the PRACH signal on the SBFD symbol by means of the following method, wherein the power parameters include at least one of Pcmax, preambleReceivedTargetPower, powerRampingStep, and preambleTransMax.

[0446] Option 1: Based on the first and second information of the protocol agreement / higher-layer configuration / dynamic indication, determine the value of the first power parameter of PRACH on the SBFD symbol in the 2-step RA and 4-step RA.

[0447] The first information includes the correlation between the first power parameters of PRACH in 2-step RA and the first power parameters of PRACH in 4-step RA;

[0448] In the 2-step RA, the first power parameter of PRACH on the SBFD symbol is configured, and the value of the power parameter on the SBFD symbol (the first value) is used;

[0449] In the 2-step RA, the first power parameter of PRACH on the SBFD symbol is not configured; instead, a second, third, or fourth value of the first power parameter is used.

[0450] In the 2-step RA, the first power parameter of PRACH on the non-SBFD symbol is taken as the second value;

[0451] In the 4-step RA, the first power parameter of PRACH on the SBFD symbol is taken as the third value;

[0452] In the 4-step RA, the first power parameter of PRACH on the non-SBFD symbol takes the fourth value;

[0453] Optional:

[0454] When the first value is not configured and the second value is configured, the first power parameter of PRACH on the SBFD symbol in 2-step RA uses the second value;

[0455] When the first value is not configured, the second value is not configured, and the third value is configured, the first power parameter of PRACH on the SBFD symbol in 2-step RA uses the third value;

[0456] When the first value is not configured, the second value is not configured, the third value is not configured, and the fourth value is configured, the first power parameter of PRACH on the SBFD symbol in 2-step RA uses the fourth value.

[0457] The first power parameter includes at least one of the following:

[0458] preambleReceivedTargetPower, powerRampingStep, Pcmax, preambleTransMax

[0459] The value of the first power parameter of PRACH on the SBFD symbol is determined according to Scheme 1-1, as follows:

[0460] Option 1-1: Determine the first power parameter of PRACH on the SBFD symbol based on the second information agreed upon in the protocol / higher-layer configuration / dynamic indication;

[0461] Scheme 1-1-1: The second piece of information is the power difference of PRACH in SBFD symbols and non-SBFD symbols, and the first power parameter of PRACH in non-SBFD symbols; Q2 = a1*Q1 + a2

[0462] Where: Q1 and Q2 are the first power parameters of the PRACH signal on the non-SBFD symbol and the SBFD symbol, respectively; a1 is the power scaling factor of the PRACH signal; and a2 is the power offset value of the PRACH signal.

[0463] Optionally, the values ​​of a1 and b1 can be different for different first power parameters;

[0464] Optionally, a1 and a2 are differential parameters for the power of the PRACH signal in SBFD symbols and non-SBFD symbols, as defined by the protocol, configured by higher layers, or dynamically indicated.

[0465] Optionally, a1 and a2 are determined based on the power differences of other UL signals in SBFD symbols and non-SBFD symbols;

[0466] a1 = c * b1 + d, where b1 is the power scaling factor for other UL signals on SBFD symbols and non-SBFD symbols;

[0467] a2 = m * b2 + n, where b2 is the power offset value of other UL signals on SBFD symbols and non-SBFD symbols;

[0468] b1, b2, c, d, m, n are values ​​defined by the protocol / higher-level configuration / dynamic indication;

[0469] Scheme 1-1-2: The second information is the value of the first power parameter of PRACH on the SBFD symbol;

[0470] Schemes 1-1-1 and 1-1-2 are applicable to the first power parameters of PRACH in 4-step RA and 2-step RA.

[0471] The network device determines the power parameters on the SBFD symbol by means of at least one of Pcmax, preambleReceivedTargetPower, powerRampingStep, and preambleTransMax.

[0472] Option 1: Determine the values ​​of the PRACH power parameters on the SBFD symbol in the 2-step RA and 4-step RA based on the first and second information of the protocol agreement / higher-layer configuration / dynamic indication;

[0473] The specific methods are as described in Terminal Equipment Solution 1, and will not be repeated here;

[0474] Option 1: Based on the first and second information of the protocol agreement / higher-level configuration / dynamic indication, determine the values ​​of the first power parameter of PRACH in 2-step RA and the first power parameter of PRACH in 4-step RA on the SBFD symbol;

[0475] The first information includes the correlation between the first power parameters of PRACH in 2-step RA and the first power parameters of PRACH in 4-step RA;

[0476] In the 2-step RA, the first power parameter of PRACH on the SBFD symbol is configured, and the value of the power parameter on the SBFD symbol (the first value) is used;

[0477] In the 2-step RA, the first power parameter of PRACH on the SBFD symbol is not configured; instead, a second, third, or fourth value of the first power parameter is used. Second value:

[0478] In the 2-step RA, the first power parameter of PRACH on the non-SBFD symbol is taken as the second value;

[0479] In the 4-step RA, the first power parameter of PRACH on the SBFD symbol is taken as the third value;

[0480] In the 4-step RA, the first power parameter of PRACH on the non-SBFD symbol takes the fourth value;

[0481] The first power parameter includes at least one of the following:

[0482] preambleReceivedTargetPower, powerRampingStep, Pcmax, preambleTransMax

[0483] To overcome gNB-gNB CLI limitations or reduce UE-UE CLI limitations, the first power parameter of the PRACH signal on SBFD and non-SBFD symbols will be configured differently. In 2-step RA and 4-step RA, some first power parameters can be shared; the specific method of sharing needs to be clearly defined. In 2-step RA, the values ​​of the first power parameter of PRACH on SBFD and non-SBFD symbols are a first value (if configured) and a second value (if configured), respectively. In 4-step RA, the values ​​of the first power parameter of PRACH on SBFD and non-SBFD symbols are a third value (if configured) and a fourth value (if configured), respectively.

[0484] If a first value is configured, then the first power parameter of PRACH on the SBFD symbol in the 2-step RA takes the first value;

[0485] If the first value is not configured, the first power parameter of PRACH on the SBFD symbol in the 2-step RA will take one of the second, third, or fourth values. Examples of the two determined orders are as follows:

[0486] Example 1:

[0487] If the first value is not configured but the second value is configured, then the first power parameter of PRACH on the SBFD symbol in the 2-step RA is the second value.

[0488] If the first value is not configured, the second value is not configured, and the third value is configured, then the first power parameter of PRACH on the SBFD symbol in the 2-step RA takes the third value.

[0489] If the first value is not configured, the second value is not configured, the third value is not configured, and the fourth value is configured, then the first power parameter of PRACH on the SBFD symbol in the 2-step RA takes the fourth value.

[0490] Example 2:

[0491] If the first value is not configured but the third value is configured, then the first power parameter of PRACH on the SBFD symbol in the 2-step RA is the third value.

[0492] If the first value is not configured, the third value is not configured, and the second value is configured, then the first power parameter of PRACH on the SBFD symbol in the 2-step RA takes the second value.

[0493] If the first value is not configured, the second value is not configured, the third value is not configured, and the fourth value is configured, then the first power parameter of PRACH on the SBFD symbol in the 2-step RA takes the fourth value.

[0494] This plan does not exclude other possible sequences.

[0495] In some embodiments, the PRACH resources in the 2-step RA and 4-step RA of the above scheme are within the same BWP.

[0496] In some embodiments, the configuration of the first power parameter may take into account constraint 1, which includes at least one of the following:

[0497] Constraint 1-1: In some embodiments, the BWP has PRACH resources for 2-step RA and PRACH resources for 4-step RA. The first power parameter of the PRACH in the 2-step RA on the SBFD and non-SBFD symbols may not be configured, i.e., it is optional.

[0498] Constraint 1-2: In some embodiments, only the PRACH resources of the 2-step RA are available within the BWP. The first power parameter of the PRACH on the non-SBFD symbol in the 2-step RA must be configured, while the first power parameter on the SBFD symbol is optional or mandatory.

[0499] Constraints 1-3: In some embodiments, the first PRACH resource is used for 2-step CFRA, and the first power parameters on SBFD and non-SBFD symbols are not configured in the first PRACH resource. The first power parameters on SBFD and non-SBFD symbols in the first PRACH resource are used according to the first power parameters on SBFD and non-SBFD symbols in the second PRACH resource. The second PRACH resource is used for 2-step CFRA.

[0500] In some embodiments, the configuration of the first power parameter may take into account constraint 2, which includes at least one of the following:

[0501] Constraint 2-1: In some embodiments, the first power parameter of PRACH in the 2-step RA on both SBFD and non-SBFD symbols may not be configured, i.e., it is an optional configuration.

[0502] If the PRACH resource of the 2-step RA is configured in AdditionalRACH-Config, the PRACH resource of the 4-step RA in the above scheme is configured in the same AdditionalRACH-Config (and also in the same BWP).

[0503] If the PRACH resource configuration for 2-step RA is not in AdditionalRACH-Config, the PRACH resource configuration for 4-step RA in the above scheme is in the same BWP.

[0504] Constraint 2-2: In some embodiments, the BWP contains only PRACH resources for 2-step RA and no PRACH resources for 4-step RA, or the ROs for the PRACH resources of 2-step RA and the PRACH resources of 4-step RA are configured separately. The first power parameter of the PRACH in the 2-step RA on the non-SBFD symbol must be configured, while the first power parameter on the SBFD symbol is optional or mandatory.

[0505] Constraint 2-3: In some embodiments, the first PRACH resource is used for 2-step CFRA, and the first power parameters on SBFD and non-SBFD symbols are not configured in the first PRACH resource. The first power parameters on SBFD and non-SBFD symbols in the first PRACH resource are used according to the first power parameters on SBFD and non-SBFD symbols in the second PRACH resource. The second PRACH resource is used for 2-step CFRA.

[0506] In some embodiments, different constraints are considered for different first power parameters. For example, preambleReceivedTargetPower may consider constraints 1-1, 1-2, 1-3, powerRampingStep may consider constraints 2-1, 2-2, 2-3, and preambleTransMax may consider constraints 2-1, 2-2.

[0507] In a 4-step RA, the first power parameter of PRACH on SBFD and non-SBFD symbols takes the third value (if configured) and the fourth value (if configured), respectively. If the third value is configured, the first power parameter of PRACH on SBFD symbols in a 4-step RA takes the third value; if the third value is not configured but the fourth value is configured, the first power parameter of PRACH on SBFD symbols in a 4-step RA takes the fourth value.

[0508] The value of the first power parameter of the PRACH resource on the SBFD symbol is determined according to Scheme 1-1. The first power parameter includes at least one of Pcmax, preambleReceivedTargetPower, powerRampingStep, and preambleTransMax.

[0509] In Scheme 1, the value of the first power parameter of PRACH on the SBFD symbol is determined according to Scheme 1-1, as follows:

[0510] Option 1-1: Determine the first power parameter of PRACH on the SBFD symbol based on the second information agreed upon in the protocol / higher-layer configuration / dynamic indication;

[0511] Scheme 1-1-1: The second piece of information is the power difference of PRACH in SBFD symbols and non-SBFD symbols, and the first power parameter of PRACH in non-SBFD symbols; Q2 = a1*Q1 + a2

[0512] Where: Q1 and Q2 are the first power parameters of the PRACH signal on the non-SBFD symbol and the SBFD symbol, respectively; a1 is the power scaling factor of the PRACH signal; and a2 is the power offset value of the PRACH signal.

[0513] Optionally, the values ​​of a1 and b1 can be different for different first power parameters;

[0514] Optionally, a1 and a2 are numerical values ​​defined by the protocol, higher-level configuration, or dynamic indication.

[0515] Optionally, a1 and a2 are determined based on the power differences of other UL signals in SBFD symbols and non-SBFD symbols;

[0516] a1 = c * b1 + d, where b1 is the power scaling factor for other UL signals on SBFD symbols and non-SBFD symbols;

[0517] a2 = m * b2 + n, where b2 is the power offset value of other UL signals on SBFD symbols and non-SBFD symbols;

[0518] b1, b2, c, d, m, n are values ​​defined by the protocol / higher-level configuration / dynamic indication;

[0519] Option 1-1-1 contains two options:

[0520] Option 1: Determine the first power parameter of PRACH on the SBFD symbol based on the power differences of other UL signals in SBFD and non-SBFD symbols according to the protocol default / higher-level configuration / dynamic indication, and the first power parameter of PRACH on the non-SBFD symbol;

[0521] Option 2: Determine the first power parameter of PRACH on SBFD symbols based on the power differences of PRACH on SBFD symbols and non-SBFD symbols according to the protocol default / higher-level configuration / dynamic indication, and the first power parameter of PRACH on non-SBFD symbols;

[0522] An example of Option 1 is as follows:

[0523] The maximum power difference between other UL signal SBFD symbols and non-SBFD symbols is offset#1, and the maximum power difference between PRACH SBFD symbols and non-SBFD symbols is offset#2.

[0524] offset#2 = A1 * offset#1 + A2

[0525] Pcmax_SBFD=Pcmax_non-SBFD+offset#2

[0526] A1 and A2 are the default / higher-level configuration / dynamic indication values ​​of the protocol;

[0527] The target power difference between other UL signal SBFD symbols and non-SBFD symbols is offset#3, and the target power difference between PRACH SBFD symbols and non-SBFD symbols is offset#4.

[0528] offset#4 = B1 * offset#3 + B2

[0529] preambleReceivedTargetPower_SBFD=preambleReceivedTargetPower_non-SBFD+offset#4

[0530] B1 and B2 are the default / higher-level configuration / dynamic indication values ​​of the protocol;

[0531] The power ramp step difference between other UL signal SBFD symbols and non-SBFD symbols is offset#5, and the power ramp step difference between PRACH SBFD symbols and non-SBFD symbols is offset#6.

[0532] offset#6 = C1 * offset#5 + C2

[0533] powerRampingStep_SBFD=powerRampingStep_non-SBFD+offset#6

[0534] C1 and C2 are the default / higher-level configuration / dynamic indication values ​​of the protocol;

[0535] The difference in the maximum number of transmissions between other UL signal SBFD symbols and non-SBFD symbols is offset#7, and the difference in the maximum number of transmissions between PRACH SBFD symbols and non-SBFD symbols is offset#8;

[0536] Offset#8 = D1 * offset#7 + D2

[0537] preambleTransMax_SBFD=preambleTransMax_non_SBFD+Offset#8

[0538] At least one of offset#2, offset#4, offset#6, and offset#8 is not 0;

[0539] In some implementations, the values ​​of offset#1, offset#3, offset#5, and offset#7 are obtained according to protocol defaults / higher-level configurations / dynamic indications;

[0540] In some implementations, other UL signals are configured with values ​​for the first power parameter on SBFD and non-SBFD, respectively, and offset#1, offset#3, offset#5, and offset#7 are determined based on the two values.

[0541] In this approach, the overhead of PRACH signal power differentiation configuration signaling can be reduced.

[0542] Optionally, when the first power parameter of the PRACH signal is not differentiated on SBFD and non-SBFD symbols, a parameter can be added to indicate whether the difference in the first power parameter of the PRACH signal on SBFD and non-SBFD symbols is calculated based on the difference in the first power parameter of the UL signal on SBFD and non-SBFD symbols.

[0543] Optionally, when calculating the difference in the first power parameter of the PRACH signal on SBFD and non-SBFD symbols based on the difference in the first power parameter of other UL signals on SBFD and non-SBFD symbols, at least one parameter among Pcmax, preambleReceivedTargetPower, and powerRampingStep can be calculated differentially.

[0544] An example of Option 2 is as follows:

[0545] The differences in Pcmax, preambleReceivedTargetPower, powerRampingStep, and preambleTransMax between SBFD and non-SBFD symbols are offset#9, offset#10, offset#11, and offset#12, respectively.

[0546] Pcmax_SBFD=Pcmax_non-SBFD+offset#9

[0547] preambleReceivedTargetPower_SBFD=preambleReceivedTargetPower_non-SBFD+offset#10

[0548] powerRampingStep_SBFD=powerRampingStep_non-SBFD+offset#11

[0549] preambleTransMax_SBFD=preambleTransMax+Offset#12

[0550] At least one of offset#9, offset#10, offset#11, and offset#12 is not 0.

[0551] Considering the structural differences between other UL signals and PRACH signals, the power differentiation values ​​for different signals may differ. In Option 2, the differentiation of the first power parameter of the PRACH signal on SBFD and non-SBFD symbols can be directly configured, and this differentiation of the first power parameter is more suitable for the PRACH signal.

[0552] In Scheme 1-1-2, the first power parameter of PRACH in the SBFD symbol is determined based on the protocol default / higher-layer configuration / dynamic indication of the first power parameter of PRACH in the SBFD symbol.

[0553] The maximum power of the SBFD symbol, the target received power, the power ramping step size, and the maximum number of preamble transmissions are configured as Pcmax_SBFD, preambleReceivedTargetPower_SBFD, powerRampingStep_SBFD, and preambleTransMax_SBFD, respectively.

[0554] At least one of the following parameters differs from that of a non-SBFD symbol: maximum power, target received power, power ramp step size, and maximum preamble transmissions.

[0555] Considering the structural differences between other UL signals and PRACH signals, the power differentiation values ​​for different signals may vary. In Scheme 1-1-2, the first power parameter of the PRACH signal in SBFD can be directly configured to enable power differentiation of PRACH in SBFD symbols and non-SBFD symbols. This differentiation of the first power parameter is more suitable for PRACH signals.

[0556] In some embodiments, the name of the first power parameter may be different in different RACH resource configurations. This solution does not limit this, and several examples are as follows:

[0557] For 4-step RA, the names of maximum power, target received power, power ramping step, and preamble maximum number of transmissions can be Pcmax, preambleReceivedTargetPower, powerRampingStep, and preambleTransMax.

[0558] For 2-step RA, the names of maximum power, target received power, power ramping step size, and maximum number of preamble transmissions can be Pcmax, msgA-PreambleReceivedTargetPower-r16, msgA-PreamblePowerRampingStep-r16, and preambleTransMax-r16;

[0559] For some high-priority PRACH resources, the names of maximum power, target received power, power ramping step, and maximum number of preamble transmissions can be Pcmax, preambleReceivedTargetPower, powerRampingStepHighPriority, and preambleTransMax.

[0560] In some embodiments, different parameters in the first power parameter may use different schemes.

[0561] In some embodiments, the PRACH signal is used for repetition transmission, and the symbol classes (SBFD symbols and non-SBFD symbols) of multiple repetitions are different:

[0562] The transmission power of multiple repetitions is determined using a first power parameter on a symbol class;

[0563] Optionally, use the symbol category of the first repetition;

[0564] The transmission power of the repetition is determined using the respective first power parameters for SBFD symbols and non-SBFD symbols.

[0565] This disclosure also proposes an apparatus (also referred to as a communication device, etc.) for implementing any of the above methods. For example, an apparatus is proposed, which includes units or modules for implementing the steps performed by the terminal device in any of the above methods.

[0566] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0567] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0568] Figure 4a is an exemplary structural diagram of a terminal device according to an embodiment of this disclosure. The terminal device 4100 is used to perform any of the above methods. In some embodiments, as shown in Figure 4a, the terminal device 4100 may include at least one of a transceiver module 4101 and a processing module 4102, wherein:

[0569] The transceiver module 4101 is used to receive power configuration information of signals from network devices, including PRACH and / or uplink signals;

[0570] Processing module 4102 is used to determine the power parameters of PRACH on the SBFD symbol based on the power configuration information.

[0571] In some embodiments, the power configuration information includes at least one of the following:

[0572] PRACH power parameters on the SBFD symbol;

[0573] Power parameters of PRACH on non-SBFD symbols;

[0574] The first correlation is the correlation between the power parameters of PRACH on SBFD symbols and the power parameters of PRACH on non-SBFD symbols;

[0575] The second correlation is the correlation between the power parameters of the uplink signal on SBFD symbols and the power parameters of the uplink signal on non-SBFD symbols;

[0576] The third association relationship is the association relationship between the PRACH and the uplink signal.

[0577] In some embodiments, PRACH includes PRACH in a two-step random access procedure and / or PRACH in a four-step random access procedure, and processing module 4102 is specifically used for:

[0578] Based on the power configuration information and indication information, determine the power parameters of PRACH on the SBFD symbol;

[0579] The indication information is used to indicate the priority of power parameter values ​​in the power configuration information.

[0580] In some embodiments, the order of priority of values ​​from high to low is as follows:

[0581] The power parameters of PRACH on SBFD symbols in a two-step random access process, the power parameters of PRACH on non-SBFD symbols in a two-step random access process, the power parameters of PRACH on SBFD symbols in a four-step random access process, and the power parameters of PRACH on non-SBFD symbols in a four-step random access process.

[0582] In some embodiments, the power parameter of PRACH on the SBFD symbol during the two-step random access process is one of the following:

[0583] Power parameters of PRACH on SBFD symbols during the two-step random access process;

[0584] Power parameters of PRACH on non-SBFD symbols during the two-step random access process;

[0585] Power parameters of PRACH on SBFD symbols during the four-step random access process;

[0586] Power parameters of PRACH on non-SBFD symbols during the four-step random access process.

[0587] In some embodiments, the power parameter of PRACH on the SBFD symbol during the four-step random access process is one of the following:

[0588] Power parameters of PRACH on SBFD symbols during the four-step random access process;

[0589] Power parameters of PRACH on non-SBFD symbols during the four-step random access process.

[0590] In some embodiments, the first association includes:

[0591] PRACH's first power scaling factor;

[0592] And / or,

[0593] The first power offset value of PRACH.

[0594] In some embodiments, the second association includes: a second power scaling factor of the uplink signal, and / or a second power offset value of the uplink signal;

[0595] The third correlation includes: the correlation between the second power scaling factor of the uplink signal and the first power scaling factor of the PRACH; and / or, the correlation between the second power offset value of the uplink signal and the first power offset value of the PRACH.

[0596] In some embodiments, the power parameter of PRACH on the SBFD symbol is the sum of a first power parameter and a first power offset value, wherein:

[0597] The first power parameter is the product of the power parameter of PRACH on non-SBFD symbols and the first power scaling factor.

[0598] In some embodiments, the power parameters include at least one of the following:

[0599] Maximum transmit power of the terminal equipment;

[0600] The target receive power of the network device;

[0601] Power ramp-up step size;

[0602] Maximum number of transmissions.

[0603] In some embodiments, power configuration information is carried in at least one of the following signaling:

[0604] Downlink Control Information (DCI);

[0605] Radio Resource Control (RRC) messages;

[0606] Media Access Control - Control Element MAC-CE.

[0607] In some embodiments, the transceiver module 4101 is further configured to:

[0608] Based on the power parameters of PRACH on the SBFD symbol, send PRACH to the network device.

[0609] Optionally, the transceiver module 4101 is used to perform at least one of the communication steps (such as steps S2101, S2104, S2201, S2204, S2301, S2304, S3101, but not limited thereto) performed by the terminal device 4100 in any of the above methods, which will not be elaborated here. Optionally, the processing module 4102 is used to perform at least one of the other steps (such as steps S2102, S2202, S2302, S3102, but not limited thereto) performed by the terminal device 4100 in any of the above methods, which will not be elaborated here.

[0610] Figure 4b is an exemplary structural diagram of a network device according to an embodiment of this disclosure. The network device 4200 is used to perform any of the above methods. In some embodiments, as shown in Figure 4b, the network device 4200 may include at least one of a transceiver module 4201 and a processing module 4202, wherein:

[0611] The transceiver module 4201 is used to send power configuration information of signals to the terminal device, including PRACH and / or uplink signals;

[0612] Processing module 4202 is used to determine the power parameters of PRACH on the SBFD symbol based on the power configuration information.

[0613] In some embodiments, the power configuration information includes at least one of the following:

[0614] PRACH power parameters on the SBFD symbol;

[0615] Power parameters of PRACH on non-SBFD symbols;

[0616] The first correlation is the correlation between the power parameters of PRACH on SBFD symbols and the power parameters of PRACH on non-SBFD symbols;

[0617] The second correlation is the correlation between the power parameters of the uplink signal on SBFD symbols and the power parameters of the uplink signal on non-SBFD symbols;

[0618] The third association relationship is the association relationship between the PRACH and the uplink signal.

[0619] In some embodiments, PRACH includes PRACH in a two-step random access procedure and / or PRACH in a four-step random access procedure, and processing module 4202 is specifically used for:

[0620] Based on the power configuration information and indication information, determine the power parameters of PRACH on the SBFD symbol;

[0621] The indication information is used to indicate the priority of power parameter values ​​in the power configuration information.

[0622] In some embodiments, the order of priority of values ​​from high to low is as follows:

[0623] The power parameters of PRACH on SBFD symbols in a two-step random access process, the power parameters of PRACH on non-SBFD symbols in a two-step random access process, the power parameters of PRACH on SBFD symbols in a four-step random access process, and the power parameters of PRACH on non-SBFD symbols in a four-step random access process.

[0624] In some embodiments, the power parameter of PRACH on the SBFD symbol during the two-step random access process is one of the following:

[0625] Power parameters of PRACH on SBFD symbols during the two-step random access process;

[0626] Power parameters of PRACH on non-SBFD symbols during the two-step random access process;

[0627] Power parameters of PRACH on SBFD symbols during the four-step random access process;

[0628] Power parameters of PRACH on non-SBFD symbols during the four-step random access process.

[0629] In some embodiments, the power parameter of PRACH on the SBFD symbol during the four-step random access process is one of the following:

[0630] Power parameters of PRACH on SBFD symbols during the four-step random access process;

[0631] Power parameters of PRACH on non-SBFD symbols during the four-step random access process.

[0632] In some embodiments, the first association includes:

[0633] PRACH's first power scaling factor;

[0634] And / or,

[0635] The first power offset value of PRACH.

[0636] In some embodiments, the second association includes: a second power scaling factor of the uplink signal, and / or a second power offset value of the uplink signal;

[0637] The third correlation includes: the correlation between the second power scaling factor of the uplink signal and the first power scaling factor of the PRACH; and / or, the correlation between the second power offset value of the uplink signal and the first power offset value of the PRACH.

[0638] In some embodiments, the power parameter of PRACH on the SBFD symbol is the sum of a first power parameter and a first power offset value, wherein:

[0639] The first power parameter is the product of the power parameter of PRACH on non-SBFD symbols and the first power scaling factor.

[0640] In some embodiments, the power parameters include at least one of the following:

[0641] Maximum transmit power of the terminal equipment;

[0642] The target receive power of the network device;

[0643] Power ramp-up step size;

[0644] Maximum number of transmissions.

[0645] In some embodiments, power configuration information is carried in at least one of the following signaling:

[0646] DCI;

[0647] RRC message;

[0648] MAC-CE.

[0649] In some embodiments, the transceiver module 4201 is further configured to:

[0650] Based on the power parameters of the PRACH on the SBFD symbol, the receiving terminal device sends the PRACH.

[0651] Optionally, the transceiver module 4201 is used to perform at least one of the communication steps (e.g., steps S2101, S2104, S2201, S2204, S2301, S2304, S3101, but not limited thereto) performed by the network device 4200 in any of the above methods, which will not be elaborated here. Optionally, the processing module 4202 is used to perform at least one of the other steps (e.g., steps S2103, S2203, S2303, S3103, but not limited thereto) performed by the network device 4200 in any of the above methods, which will not be elaborated here.

[0652] Figure 5a is an exemplary structural diagram of the communication device proposed in an embodiment of this disclosure. The communication device 5100 can be a network device (e.g., access network device, core network device, etc.), a terminal device (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal device in implementing any of the above methods. The communication device 5100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0653] As shown in Figure 5a, the communication device 5100 is used to execute any of the above methods. In some embodiments, the communication device 5100 includes one or more processors 5101. The processor 5101 may be a general-purpose processor or a special-purpose processor, such as a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 5100 is used to execute any of the above methods. Optionally, one or more processors 5101 are used to invoke instructions to cause the communication device 5100 to execute any of the above methods.

[0654] In some embodiments, the communication device 5100 further includes one or more transceivers 5102. When the communication device 5100 includes one or more transceivers 5102, the transceiver 5102 performs at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., steps S2101, S2104, S2201, S2204, S2301, S2304, S3101, but not limited thereto), and the processor 5101 performs at least one of other steps (e.g., steps S2102, S2103, S2202, S2203, S2302, S2303, S3102, S3103, but not limited thereto). In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated together. Optionally, terms such as transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface can be used interchangeably; terms such as transmitter, transmitter unit, transmitter, and transmitter circuit can be used interchangeably; and terms such as receiver, receiver unit, receiver, and receiver circuit can be used interchangeably.

[0655] In some embodiments, the communication device 5100 further includes one or more memories 5103 for storing data and / or instructions. Optionally, one or more processors 5101 are used to invoke instructions stored in the memory 5103 to cause the communication device 5100 to perform any of the above methods. Optionally, all or part of the memory 5103 may also be located outside the communication device 5100. In an optional embodiment, the communication device 5100 may include one or more interface circuits 5104. Optionally, the interface circuit 5104 is connected to the memory 5103 and can be used to receive data and / or instructions from the memory 5103 or other devices, and can be used to send data and / or instructions to the memory 5103 or other devices. For example, the interface circuit 5104 can read data and / or instructions stored in the memory 5103 and send the data and / or instructions to the processor 5101.

[0656] The communication device 5100 described in the above embodiments may be a network device or a terminal device, but the scope of the communication device 5100 described in this disclosure is not limited thereto, and the structure of the communication device 5100 may not be limited by FIG. 5a. The communication device may be a standalone device or a part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data, programs and / or instructions; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0657] Figure 5b is an exemplary structural diagram of the chip proposed in an embodiment of this disclosure. For cases where the communication device 5100 can be a chip or a chip system, please refer to the structural diagram of the chip 5200 shown in Figure 5b, but it is not limited thereto.

[0658] Chip 5200 includes one or more processors 5201. Chip 5200 is used to perform any of the methods described above.

[0659] In some embodiments, chip 5200 further includes one or more interface circuits 5202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 5200 further includes one or more memories 5203 for storing data and / or instructions. Optionally, all or part of the memories 5203 may be located outside of chip 5200. Optionally, the interface circuit 5202 is connected to the memories 5203, and the interface circuit 5202 can be used to receive data and / or instructions from the memories 5203 or other devices, and the interface circuit 5202 can be used to send data and / or instructions to the memories 5203 or other devices. For example, the interface circuit 5202 can read data and / or instructions stored in the memories 5203 and send the data and / or instructions to the processor 5201.

[0660] In some embodiments, the interface circuit 5202 performs at least one of the communication steps such as sending and / or receiving in the above-described method. The interface circuit 5202 performing at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., steps S2101, S2104, S2201, S2204, S2301, S2304, S3101, but not limited thereto) refers to, for example, the interface circuit 5202 performing data and / or instruction interaction between the processor 5201, the chip 5200, the memory 5203, or the transceiver device. In some embodiments, the processor 5201 performs at least one of other steps (e.g., steps S2102, S2103, S2202, S2203, S2302, S2303, S3102, S3103, but not limited thereto).

[0661] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0662] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform 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 not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0663] This disclosure also proposes a program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.

[0664] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

[0665] Those skilled in the art will recognize that the units and algorithm steps of the various examples 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 implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art 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.

[0666] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0667] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A method for determining power parameters, characterized in that, The method, executed by a terminal device, includes: Power configuration information for signals received from network devices, the signals including Physical Random Access Channel (PRACH) and / or uplink signals; Based on the power configuration information, determine the power parameters of PRACH on the sub-band full-duplex SBFD symbol.

2. The method according to claim 1, characterized in that, The power configuration information includes at least one of the following: The power parameters of the PRACH on the SBFD symbol; The power parameters of the PRACH on non-SBFD symbols; The first association relationship is the association between the power parameters of the PRACH on SBFD symbols and the power parameters of the PRACH on non-SBFD symbols; The second correlation is the correlation between the power parameters of the uplink signal on SBFD symbols and the power parameters of the uplink signal on non-SBFD symbols; The third association relationship is the association relationship between the PRACH and the uplink signal.

3. The method according to claim 2, characterized in that, The PRACH includes PRACH in a two-step random access process and / or PRACH in a four-step random access process. Determining the power parameters of the PRACH on the sub-band full-duplex SBFD symbol based on the power configuration information includes: Based on the power configuration information and indication information, determine the power parameters of the PRACH on the SBFD symbol; The indication information is used to indicate the priority of the power parameter values ​​in the power configuration information.

4. The method according to claim 3, characterized in that, The order of priority of the values ​​from high to low is as follows: The power parameters of PRACH on SBFD symbols in the two-step random access process, the power parameters of PRACH on non-SBFD symbols in the two-step random access process, the power parameters of PRACH on SBFD symbols in the four-step random access process, and the power parameters of PRACH on non-SBFD symbols in the four-step random access process.

5. The method according to claim 3 or 4, characterized in that, The power parameter of PRACH on the SBFD symbol during the two-step random access process is one of the following: The power parameters of PRACH on the SBFD symbol during the two-step random access process; The power parameters of PRACH on non-SBFD symbols during the two-step random access process; The power parameters of PRACH on SBFD symbols during the four-step random access process; The power parameters of PRACH on non-SBFD symbols in the four-step random access process.

6. The method according to claim 3 or 4, characterized in that, The power parameter of PRACH on the SBFD symbol in the four-step random access process described in PRACH is one of the following: The power parameters of PRACH on SBFD symbols during the four-step random access process; The power parameters of PRACH on non-SBFD symbols in the four-step random access process.

7. The method according to claim 2, characterized in that, The first association includes: The first power scaling factor of the PRACH; And / or, The first power offset value of PRACH.

8. The method according to claim 2, characterized in that, The second association includes: the second power scaling factor of the uplink signal, PRACH, and / or the second power offset value PRACH of the uplink signal; The third correlation includes: the correlation between the second power scaling factor of the uplink signal and the first power scaling factor of the PRACH; and / or, the correlation between the second power offset value of the uplink signal and the first power offset value of the PRACH.

9. The method according to claim 7 or 8, characterized in that, The power parameter of PRACH on the SBFD symbol is the sum of the first power parameter and the first power offset value, wherein: The first power parameter is the product of the power parameter of the PRACH on the non-SBFD symbol and the first power scaling factor.

10. The method according to any one of claims 1-9, characterized in that, The power parameter includes at least one of the following: The maximum transmission power of the terminal device; The target received power of the network device; Power ramp-up step size; Maximum number of transmissions.

11. The method according to any one of claims 1-10, characterized in that, The power configuration information is carried in at least one of the following signaling methods: Downlink Control Information (DCI); Radio Resource Control (RRC) messages; Media Access Control - Control Element MAC-CE.

12. The method according to any one of claims 1-11, characterized in that, The method further includes: The PRACH is sent to the network device according to the power parameters of the PRACH on the SBFD symbol.

13. A method for determining power parameters, characterized in that, Performed by a network device, the method includes: Power configuration information for sending signals to terminal devices, the signals including PRACH and / or uplink signals; Based on the power configuration information, determine the power parameters of PRACH on the SBFD symbol.

14. The method according to claim 13, characterized in that, The power configuration information includes at least one of the following: The power parameters of the PRACH on the SBFD symbol; The power parameters of the PRACH on non-SBFD symbols; The first association relationship is the association between the power parameters of the PRACH on SBFD symbols and the power parameters of the PRACH on non-SBFD symbols; The second correlation is the correlation between the power parameters of the uplink signal on SBFD symbols and the power parameters of the uplink signal on non-SBFD symbols; The third association relationship is the association relationship between the PRACH and the uplink signal.

15. The method according to claim 14, characterized in that, The PRACH includes PRACH in a two-step random access procedure and / or PRACH in a four-step random access procedure. Determining the power parameters of the PRACH on the SBFD symbol based on the power configuration information includes: Based on the power configuration information and indication information, determine the power parameters of the PRACH on the SBFD symbol; The indication information is used to indicate the priority of the power parameter values ​​in the power configuration information.

16. The method according to claim 15, characterized in that, The order of priority of the values ​​from high to low is as follows: The power parameters of PRACH on SBFD symbols in the two-step random access process, the power parameters of PRACH on non-SBFD symbols in the two-step random access process, the power parameters of PRACH on SBFD symbols in the four-step random access process, and the power parameters of PRACH on non-SBFD symbols in the four-step random access process.

17. The method according to claim 15 or 16, characterized in that, The power parameter of PRACH on the SBFD symbol during the two-step random access process is one of the following: The power parameters of PRACH on the SBFD symbol during the two-step random access process; The power parameters of PRACH on non-SBFD symbols during the two-step random access process; The power parameters of PRACH on SBFD symbols during the four-step random access process; The power parameters of PRACH on non-SBFD symbols in the four-step random access process.

18. The method according to claim 15 or 16, characterized in that, The power parameter of PRACH on the SBFD symbol in the four-step random access process described in PRACH is one of the following: The power parameters of PRACH on SBFD symbols during the four-step random access process; The power parameters of PRACH on non-SBFD symbols in the four-step random access process.

19. The method according to claim 14, characterized in that, The first association includes: The first power scaling factor of the PRACH; And / or, The first power offset value of PRACH.

20. The method according to claim 14, characterized in that, The second association includes: the second power scaling factor of the uplink signal, and / or, the second power offset value of the uplink signal; The third association includes: the association between the second power scaling factor of the uplink signal and the first power scaling factor of the PRACH; and / or, the association between the second power offset value of the uplink signal and the first power offset value of the PRACH (PRACHPRACH).

21. The method according to claim 19 or 20, characterized in that, The power parameter of PRACH on the SBFD symbol is the sum of the first power parameter and the first power offset value, wherein: The first power parameter is the product of the power parameter of the PRACH on the non-SBFD symbol and the first power scaling factor.

22. The method according to any one of claims 13-21, characterized in that, The power parameter includes at least one of the following: The maximum transmission power of the terminal device; The target received power of the network device; Power ramp-up step size; Maximum number of transmissions.

23. The method according to any one of claims 13-22, characterized in that, The power configuration information is carried in at least one of the following signaling methods: DCI; RRC message; MAC-CE.

24. The method according to any one of claims 13-23, characterized in that, The method further includes: The terminal device receives the PRACH sent by the terminal device based on the power parameters of the PRACH on the SBFD symbol.

25. A terminal device, characterized in that, The terminal device is used to execute the power parameter determination method according to any one of claims 1-12.

26. A network device, characterized in that, The network device is used to perform the power parameter determination method according to any one of claims 13-24.

27. A communication device, characterized in that, The communication device is used to perform the power parameter determination method according to any one of claims 1-12 and 13-24.

28. A storage medium storing instructions, characterized in that, When the instruction is executed on the communication device, the communication device performs the power parameter determination method as described in any one of claims 1-12, 13-24.

29. A program product comprising at least one of a program and instructions, characterized in that, When at least one of the programs or instructions is executed by the communication device, it implements the steps of the power parameter determination method according to any one of claims 1-12 and 13-24.

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