Determination method for uplink transmit power in random access and related device

Abstract

The present application discloses a determination method for an uplink transmit power in random access and a related device. When sub-band full-duplex is introduced into a system, because a message sent by a terminal device to a base station during random access lacks the definition of a related uplink transmit power, the terminal device cannot determine an uplink transmit power thereof when sending the message. Moreover, if the uplink transmit power is excessively low, the base station cannot ensure that information sent by the terminal device is received, and if the uplink transmit power is excessively high, interference is caused to the base station. Therefore, in the present application, the uplink transmit power of the message sent by the terminal device to the base station during random access needs to be defined to ensure the receiving performance of the base station, and a minimum uplink transmit power is determined, so that the interference to the base station is minimized. By means of basic information of a message to be sent by a terminal device to a base station during random access in a sub-band full-duplex system, a parameter value of an uplink transmit power parameter is determined, so as to determine an uplink transmit power of the message to be sent.

Description

Methods for determining uplink transmit power and related equipment in random access

[0001] This application claims priority to Chinese Patent Application No. 202410940557.7, filed on July 12, 2024, entitled “Method and related equipment for determining uplink transmit power in random access”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a method and related equipment for determining uplink transmit power in random access. Background Technology

[0003] Due to the limitations of uplink / downlink time slot allocation in Time Division Duplex (TDD) systems, the transmission delay is relatively large. Furthermore, in TDD systems, to reduce the implementation complexity of the next generation Node B (gNB), all frequency domain resources of a TDD carrier must have the same transmission direction at any given time, either uplink (UL) or downlink (DL). This means the uplink / downlink time slot allocation for different frequency domain resources of a TDD carrier cannot be flexibly configured. With the diversification of services, especially considering the needs of vertical industries, different services have different uplink / downlink transmission requirements, and a single uplink / downlink time slot allocation cannot meet the needs of different services. Based on these two points, and considering the implementation complexity of gNBs, a Subband Full Duplex (SBFD) solution is proposed. This solution uses different uplink / downlink time slot allocations for different subbands of the same carrier. Specifically, in an SBFD system, a UL subband is added to the time slots of the DL symbol, allowing terminal devices to transmit uplink on this UL subband, while the gNB transmits downlink in the locations other than the UL subband.

[0004] However, currently, during Random Access (RA) processes, the messages sent by terminal devices to the gNB, such as MSG 1, MSG 3, and MSG A, lack defined uplink transmit power. This makes it impossible for the terminal device to determine its uplink transmit power when sending these messages. If the uplink transmit power is too low, the gNB cannot guarantee receiving the information sent by the terminal device; if the uplink transmit power is too high, it will cause interference to the gNB. Therefore, this application needs to define the uplink transmit power of messages sent by terminal devices to the base station during random access processes to solve the above problems. Summary of the Invention

[0005] This application provides a method and related equipment for determining uplink transmit power in random access, and provides a scheme for defining the uplink transmit power of messages sent to the base station during random access.

[0006] Firstly, this application provides a method for determining uplink transmit power in random access, comprising:

[0007] The uplink transmit power parameter value is determined based on the basic information of the message to be sent. The message to be sent is a message sent by the terminal device to the base station during random access in the sub-band full-duplex system.

[0008] The uplink transmission power of the message to be sent is determined based on the parameter value of the uplink transmission power parameter.

[0009] As can be seen, after the introduction of SBFD in the system, the lack of definition for the uplink transmit power of messages sent by the terminal device to the gNB during the RA process makes it impossible for the terminal device to determine its uplink transmit power when sending messages. Insufficient uplink transmit power cannot guarantee the gNB's reception performance, while excessive uplink transmit power will cause interference to the gNB. Therefore, a method is needed to define the uplink transmit power of messages sent by the terminal device to the gNB during the RA process. This embodiment obtains the uplink transmit power parameters of the message to be sent from the terminal device to the gNB during the RA process in the SBFD system based on the basic information of the message to be sent, and then determines the uplink transmit power of the message based on these parameters. Thus, a technical solution for defining the uplink transmit power of messages sent by the terminal device to the gNB during the RA process is provided.

[0010] In one possible implementation, the message to be sent includes at least one of the following: a mixed automatic retransmission request acknowledgment of message 1, message 3, message A and message 4.

[0011] In one possible implementation, the basic information includes at least one of the following:

[0012] The type of random access timing for the message to be sent, the type of random access timing when the terminal device previously sent a message, and the type of transmission symbol used in the message to be sent;

[0013] The types of random access opportunities include a first type and a second type;

[0014] The first type refers to the random access opportunity being in a non-subband full-duplex symbol, or the random access opportunity being in an uplink symbol or flexible symbol configured by higher-layer signaling, or the random access opportunity being in a random access channel that does not contain subband full-duplex symbols.

[0015] The second type refers to the random access opportunity being within a subband full-duplex symbol, or the random access opportunity being within an uplink symbol subband configured by higher-layer signaling, or the random access opportunity being within a random access channel containing a subband full-duplex symbol.

[0016] The types of transmission symbols used in the message to be sent include the third type and the fourth type;

[0017] The third type refers to the message to be sent being transmitted using non-subband full-duplex symbols;

[0018] The fourth type refers to the message to be sent being transmitted using subband full-duplex symbols.

[0019] In one possible implementation, if the message to be sent is the preamble portion of message 1, message A, or the hybrid automatic repeat request confirmation of message 4, then the uplink transmit power parameter includes at least one of the following: a first parameter and a second parameter;

[0020] The parameter values ​​of the first parameter and the second parameter are related to the type of random access timing of the message to be sent;

[0021] The first parameter is used to characterize the power ramp-up step size during preamble transmission.

[0022] The second parameter is used to characterize the number of power ramps during the preamble transmission.

[0023] In one possible implementation, if the random access timing of the message to be sent is of the first type, then the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A1 in the first configuration.

[0024] If the random access timing of the message to be sent is of the second type, then the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A2 in the second configuration.

[0025] The parameters A1 and A2 are used to calculate the uplink transmit power of the preamble portion of message 1, message A, or the hybrid automatic repeat request acknowledgment of message 4.

[0026] In one possible implementation, the parameter values ​​of the first parameter and the second parameter are also related to the type of random access timing when the terminal device previously sent a message.

[0027] In one possible implementation, if the random access timing of the message to be sent is of the first type, and the random access timing of the terminal device when it last sent a message was of the first type, the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A1 in the first configuration.

[0028] If the random access timing of the message to be sent is of the first type, and the random access timing of the terminal device when it sent the message last time is of the second type, the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A2 in the second configuration.

[0029] If the random access timing of the message to be sent is of the second type, and the random access timing of the terminal device when it sent the message last time was of the first type, the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A3 in the second configuration.

[0030] If the random access timing of the message to be sent is of the second type, and the random access timing of the terminal device when it sent the message last time was of the second type, the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A4 in the second configuration.

[0031] The parameters A1, A2, A3, and A4 are used to calculate the uplink transmit power of the preamble portion of message 1, message A, or the hybrid automatic repeat request acknowledgment of message 4.

[0032] In one possible implementation, if the message to be sent is the preamble portion of message 1 or message A, the uplink transmit power parameter further includes a third parameter;

[0033] The value of the third parameter is related to the type of random access timing of the message to be sent;

[0034] The third parameter is used to characterize the initial power during random access.

[0035] In one possible implementation, if the random access timing of the message to be sent is of the first type, then the parameter value of the third parameter is determined by parameter B1 in the first configuration.

[0036] If the random access timing of the message to be sent is of the second type, then the parameter value of the third parameter is determined by parameter B2 in the second configuration;

[0037] Parameters B1 and B2 are used to calculate the uplink transmit power of the preamble portion in message 1 or message A.

[0038] In one possible implementation, when the message to be sent is message 3, the uplink transmit power parameter includes at least one of the following:

[0039] The fourth, fifth, sixth, and seventh parameters;

[0040] The fourth parameter is used to characterize the power during preamble transmission;

[0041] The fifth parameter is used to characterize the power bias of message 3 relative to message 1;

[0042] The sixth parameter is used to characterize the road loss compensation coefficient;

[0043] The seventh parameter is used to characterize the power control adjustment of the transmit power command.

[0044] In one possible implementation, if the uplink transmit power parameter is the fourth parameter, the value of the fourth parameter is related to the type of random access timing of the message to be sent.

[0045] In one possible implementation, if the random access timing of the message to be sent is of the first type, then the parameter value of the fourth parameter is determined by parameter C1 in the first configuration.

[0046] If the random access timing of the message to be sent is of the second type, then the parameter value of the fourth parameter is determined by parameter C2 in the second configuration;

[0047] Among them, the parameters C1 and C2 are used to calculate the uplink transmission power of message 3.

[0048] In one possible implementation, if the uplink transmit power parameter is the fifth parameter, the value of the fifth parameter is related to the type of transmission symbol used in the message to be sent.

[0049] In one possible implementation, if the type of the transmission symbol used in the message to be sent is the third type, then the parameter value of the fifth parameter is determined by parameter D1 in the first configuration; if parameter D1 does not exist, then the parameter value of the fifth parameter is the first value.

[0050] If the type of transmission symbol used in the message to be sent is the fourth type, then the parameter value of the fifth parameter is determined by parameter D2 in the second configuration; if parameter D2 does not exist, then the parameter value of the fifth parameter is determined by parameter D1; if neither parameter D2 nor parameter D1 exists, then the parameter value of the fifth parameter is the first value.

[0051] Among them, the parameters D1 and D2 are used to calculate the uplink transmission power of message 3.

[0052] In one possible implementation, if the uplink transmit power parameter is the fifth parameter, the value of the fifth parameter is related to the type of random access timing of the message to be sent and the type of transmission symbol used by the message to be sent.

[0053] In one possible implementation, if the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the fifth parameter is determined by parameter D1 in the first configuration; if parameter D1 does not exist, then the parameter value of the fifth parameter is the first value.

[0054] If the random access timing type of the message to be sent is the first type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the fifth parameter is determined by parameter D2 in the second configuration. If parameter D2 does not exist, then the parameter value of the fifth parameter is determined by parameter D1. If both parameter D2 and parameter D1 do not exist, then the parameter value of the fifth parameter is the first value.

[0055] If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the third type, then the parameter value of the fifth parameter is determined by parameter D3 in the second configuration. If parameter D3 does not exist, then the parameter value of the fifth parameter is determined by parameter D1. If both parameter D3 and parameter D1 do not exist, then the parameter value of the fifth parameter is the first value.

[0056] If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the fifth parameter is determined by parameter D4 in the second configuration. If parameter D4 does not exist, then the parameter value of the fifth parameter is determined by parameter D1. If neither parameter D4 nor parameter D1 exists, then the parameter value of the fifth parameter is the first value.

[0057] Among them, the parameters D1, D2, D3 and D4 are used to calculate the uplink transmission power of message 3.

[0058] In one possible implementation, if the uplink transmit power parameter is the sixth parameter, the value of the sixth parameter is related to the type of transmission symbol used in the message to be sent.

[0059] In one possible implementation, if the type of the transmission symbol used in the message to be sent is the third type, then the parameter value of the sixth parameter is determined by parameter E1 in the first configuration, or the parameter value of the sixth parameter is the second value.

[0060] If the type of the transmission symbol used in the message to be sent is the fourth type, then the parameter value of the sixth parameter is determined by parameter E2 in the second configuration, or the parameter value of the sixth parameter is the second value;

[0061] Among them, the parameters E1 and E2 are used to calculate the uplink transmission power of message 3.

[0062] In one possible implementation, if the uplink transmit power parameter is the sixth parameter, the value of the sixth parameter is related to the type of random access timing of the message to be sent and the type of transmission symbol used by the message to be sent.

[0063] In one possible implementation, if the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the sixth parameter is determined by parameter E1 in the first configuration, or the parameter value of the sixth parameter is a second value.

[0064] If the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the fourth type, then the parameter value of the sixth parameter is determined by parameter E2 in the second configuration, or the parameter value of the sixth parameter is the second value.

[0065] If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the third type, then the parameter value of the sixth parameter is determined by parameter E3 in the second configuration, or the parameter value of the sixth parameter is the second value;

[0066] If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the sixth parameter is determined by parameter E4 in the second configuration, or the parameter value of the sixth parameter is the second value;

[0067] Among them, the parameters E1, E2, E3 and E4 are used to calculate the uplink transmission power of message 3.

[0068] In one possible implementation, if the uplink transmit power parameter is the seventh parameter, the value of the seventh parameter is related to the type of transmission symbol used in the message to be transmitted and the number of transmit power commands configured.

[0069] In one possible implementation, if the configuration quantity of the transmit power command is 1, then the parameter value of the seventh parameter of the message to be sent of the third type and the fourth type is determined by the transmit power command.

[0070] Alternatively, the parameter value of the seventh parameter of the fifth type of message to be transmitted is determined by the transmit power command, and the parameter value of the seventh parameter of the sixth type of message to be transmitted is determined by the parameter value of the seventh parameter of the previous message to be transmitted, wherein the fifth type is the type of transmission symbol used by the first message to be transmitted, and the sixth type is a type different from the fifth type.

[0071] In one possible implementation, if the number of configured transmit power commands is 2, then the parameter value of the seventh parameter of the third type of message to be sent is determined by one of the two configured transmit power commands, and the parameter value of the seventh parameter of the fourth type of message to be sent is determined by the other of the two configured transmit power commands.

[0072] In one possible implementation, when the message to be transmitted is the payload portion of message A, the uplink transmit power parameter includes at least one of the following:

[0073] The eighth, ninth, and tenth parameters;

[0074] The eighth parameter is used to characterize the power during preamble transmission;

[0075] The ninth parameter is used to characterize the power offset of the physical uplink shared channel of message A;

[0076] The tenth parameter is used to characterize the road loss compensation coefficient.

[0077] In one possible implementation, if the uplink transmit power parameter is the eighth parameter, the value of the eighth parameter is related to the type of random access timing of the message to be sent.

[0078] In one possible implementation, if the random access timing of the message to be sent is of the first type, the parameter value of the eighth parameter is determined by parameter F1 in the first configuration; if parameter F1 does not exist, the parameter value of the eighth parameter is determined by parameter C1 in the first configuration.

[0079] If the random access timing of the message to be sent is of the second type, then the parameter value of the eighth parameter is determined by parameter F2 in the second configuration; if parameter F2 does not exist, then the parameter value of the eighth parameter is determined by parameter C1 in the first configuration.

[0080] The parameters F1 and F2 are used to calculate the uplink transmit power of the payload portion in message A, and the parameter C1 is used to calculate the uplink transmit power of message 3.

[0081] In one possible implementation, if the uplink transmit power parameter is the ninth parameter, the value of the ninth parameter is related to the type of transmission symbol used in the message to be sent.

[0082] In one possible implementation, if the type of the transmission symbol used in the message to be sent is the third type, then the parameter value of the ninth parameter is determined by the parameters G1 and H1 in the first configuration; if the parameters G1 and / or H1 do not exist, then the parameter value of the ninth parameter is the third value.

[0083] If the type of the transmission symbol used in the message to be sent is the fourth type, then the parameter value of the ninth parameter is determined by parameters G2 and H2 in the second configuration. If parameter G2 does not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H2. If parameter H2 does not exist, then the parameter value of the ninth parameter is determined by parameters G2 and H1. If parameters G2 and H2 do not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H1. If parameters G1, H1, G2, and H2 do not exist, then the parameter value of the ninth parameter is the third value.

[0084] The parameters G1, H1, G2, and H2 are used to calculate the uplink transmit power of the payload portion in message A.

[0085] In one possible implementation, if the uplink transmit power parameter is the ninth parameter, the value of the ninth parameter is related to the type of random access timing of the message to be sent and the type of transmission symbol used by the message to be sent.

[0086] In one possible implementation, if the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the ninth parameter is determined by the parameters G1 and H1 in the first configuration; if the parameters G1 and / or H1 do not exist, then the parameter value of the ninth parameter is the third value.

[0087] If the random access timing type of the message to be sent is the first type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the ninth parameter is determined by parameters G2 and H2 in the second configuration. If parameter G2 does not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H2. If parameter H2 does not exist, then the parameter value of the ninth parameter is determined by parameters G2 and H1. If parameters G2 and H2 do not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H1. If parameters G1, H1, G2, and H2 do not exist, then the parameter value of the ninth parameter is the third value.

[0088] If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the third type, then the parameter value of the ninth parameter is determined by parameters G3 and H3 in the second configuration. If parameter G3 does not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H3. If parameter H3 does not exist, then the parameter value of the ninth parameter is determined by parameters G3 and H1. If parameters G3 and H3 do not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H1. If parameters G1, H1, G3, and H3 do not exist, then the parameter value of the ninth parameter is the third value.

[0089] If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the ninth parameter is determined by parameters G4 and H4 in the second configuration. If parameter G4 does not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H4. If parameter H4 does not exist, then the parameter value of the ninth parameter is determined by parameters G4 and H1. If parameters G4 and H4 do not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H1. If parameters G1, H1, G4, and H4 do not exist, then the parameter value of the ninth parameter is the third value.

[0090] The parameters G1, H1, G2, H2, G3, H3, G4, and H4 are used to calculate the uplink transmit power of the payload portion in message A.

[0091] In one possible implementation, if the uplink transmit power parameter is the tenth parameter, the value of the tenth parameter is related to the type of transmission symbol used in the message to be sent.

[0092] In one possible implementation, if the type of the transmission symbol used in the message to be sent is the third type, then the parameter value of the tenth parameter is determined by parameter I1 in the first configuration, or the parameter value of the tenth parameter is the fourth value.

[0093] If the type of the transmission symbol used in the message to be sent is the fourth type, then the parameter value of the tenth parameter is determined by parameter I2 in the second configuration, or the parameter value of the tenth parameter is the fourth value;

[0094] The parameters I1 and I2 are used to calculate the uplink transmit power of the payload portion in message A.

[0095] In one possible implementation, if the uplink transmit power parameter is the tenth parameter, the value of the tenth parameter is related to the type of random access timing of the message to be sent and the type of transmission symbol used by the message to be sent.

[0096] In one possible implementation, if the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the tenth parameter is determined by parameter I1 in the first configuration, or the parameter value of the tenth parameter is the fourth value.

[0097] If the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the fourth type, then the parameter value of the tenth parameter is determined by parameter I2 in the second configuration, or the parameter value of the tenth parameter is the fourth value.

[0098] If the random access timing of the message to be sent is of the second type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the tenth parameter is determined by parameter I3 in the second configuration, or the parameter value of the tenth parameter is the fourth value.

[0099] If the random access timing of the message to be sent is of the second type and the transmission symbol used by the message to be sent is of the fourth type, then the parameter value of the tenth parameter is determined by parameter I4 in the second configuration, or the parameter value of the tenth parameter is the fourth value.

[0100] Among them, the parameters I1, I2, I3 and I4 are used to calculate the uplink transmit power of the payload portion in message A.

[0101] Secondly, this application provides an apparatus for determining uplink transmit power in random access, comprising:

[0102] The acquisition unit is used to determine the parameter value of the uplink transmit power parameter based on the basic information of the message to be sent, wherein the message to be sent is a message sent by the terminal device to the base station during random access in the sub-band full-duplex system;

[0103] The determining unit is used to determine the uplink transmission power of the message to be sent based on the parameter value of the uplink transmission power parameter.

[0104] Thirdly, a terminal device according to this application includes a processor, a memory, and a computer program or instructions stored in the memory, wherein the processor executes the computer program or instructions to implement the steps in the method designed in the first aspect above.

[0105] Fourthly, a chip according to this application includes a processor, wherein the processor performs the steps of the method designed in the first aspect above.

[0106] Optionally, the chip also includes a communication interface through which the processor performs the sending and / or receiving steps in the method designed in the first aspect described above.

[0107] Fifthly, a chip module according to this application includes a chip, the chip including a processor, wherein the processor performs the steps in the method designed in the first aspect above.

[0108] Optionally, the chip module further includes a transceiver component, through which the processor performs the sending and / or receiving steps in the method designed in the first aspect described above.

[0109] Sixthly, this application provides a computer-readable storage medium storing a computer program or instructions that, when executed, implement the steps of the method designed in the first aspect. For example, the computer program or instructions are executed by a processor.

[0110] A seventh aspect is a computer program product of this application, comprising a computer program or instructions, wherein when the computer program or instructions are executed, the steps in the method designed in the first aspect are performed. For example, the computer program or instructions are executed by a processor.

[0111] The beneficial effects of the technical solutions in aspects two through seven can be found in the technical effects of the technical solution in aspect one, and will not be repeated here. Attached Figure Description

[0112] Figure 1 is a schematic diagram of a communication system proposed in an embodiment of this application;

[0113] Figure 2 is a schematic diagram of a 4-step RACH process according to an embodiment of this application;

[0114] Figure 3 is a schematic diagram of a 2-step RACH process according to an embodiment of this application;

[0115] Figure 4 is a schematic diagram of RO for a RACH Option 1 according to an embodiment of this application;

[0116] Figure 5 is a schematic diagram of RO for a RACH Option 2 according to an embodiment of this application;

[0117] Figure 6 is a schematic diagram of the classification of ROs in RACH Option 1 according to an embodiment of this application;

[0118] Figure 7 is a flowchart illustrating a method for determining uplink transmit power in random access according to an embodiment of this application.

[0119] Figure 8 is a schematic diagram of a method for determining the fifth parameter of MSG 3 according to an embodiment of this application;

[0120] Figure 9 is a functional unit block diagram of a device for determining uplink transmit power in random access according to an embodiment of this application.

[0121] Figure 10 is a schematic diagram of the structure of a terminal device proposed in an embodiment of this application. Detailed Implementation

[0122] It should be understood that the terms "first," "second," etc., used in the embodiments of this application are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, software, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may also include steps or units not listed, or may also include other steps or units inherent to these processes, methods, products, or devices.

[0123] The term "implementation" as used in the embodiments of this application means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0124] In the embodiments of this application, "and / or" describes the relationship between associated objects, indicating that three relationships can exist.

[0125] In this embodiment of the application, the symbol " / " can indicate that the preceding and following related objects have an "or" relationship.

[0126] In the embodiments of this application, "at least one item" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items, which means one or more, and "multiple" means two or more.

[0127] In this application, "higher than" can be used interchangeably with "greater than," "lower than" can be used interchangeably with "less than," "not lower than" can be used interchangeably with "higher than or equal to" or "greater than or equal to," and "not higher than" can be used interchangeably with "lower than or equal to" or "less than or equal to." In this application, for the same solution, "equal to" can be used with "less than" or "greater than," but not simultaneously with both. When "equal to" is used with "less than," it applies to the technical solution adopted by "less than." When "equal to" is used with "greater than," it applies to the technical solution adopted by "greater than."

[0128] In the embodiments of this application, the terms "of", "corresponding / relevant", "corresponding", "indicated", and "associated" can be used interchangeably.

[0129] In the embodiments of this application, the terms "association", "corresponding", "is", "of", "belonging to", "as", and "considered as" may sometimes be used interchangeably.

[0130] In the embodiments of this application, "connection" refers to various connection methods such as direct connection or indirect connection to realize communication between devices, and no limitation is made in this regard.

[0131] In the embodiments of this application, "network" can be expressed as the same concept as "system," and a communication system is a communication network.

[0132] The following describes the relevant content, concepts, meanings, technical problems, technical solutions, and beneficial effects involved in the implementation of this application.

[0133] First, referring to Figure 1, Figure 1 is a schematic diagram of the network architecture of a communication system proposed in an embodiment of this application. As shown in Figure 1, the communication system 100 may include a network device 101 and a terminal device 102, and the terminal device 102 can communicate with the network device 101 wirelessly.

[0134] It is understood that the form and number of network device 101 and terminal device 102 shown in FIG1 are for illustrative purposes only and do not constitute a limitation on the embodiments of this application.

[0135] For example, the communication system 100 may also include a server or other devices.

[0136] For example, the communication system 100 may include other network devices besides network device 101.

[0137] For example, the communication system 100 may include other terminal devices besides the terminal device 102.

[0138] In this embodiment, the communication system includes, but is not limited to: Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, 5G communication system (e.g., New Radio (NR), evolution of NR system, etc.), LTE-based Access to Unlicensed Spectrum (LTE-U) system, NR-based Access to Unlicensed Spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), communication system integrating multiple communication technologies (e.g., communication system integrating LTE and NR technologies), or various new communication systems suitable for the future, such as 6G communication system, 7G communication system, etc. The embodiments of this application do not limit this.

[0139] It should be noted that traditional communication systems support a limited number of connections. However, with the development of communication technology, the communication system in this application can not only be a traditional communication system, but also such as device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, vehicle-to-everything (V2X) communication, narrowband Internet of Things (NB-IoT) communication, etc.

[0140] The technical solutions of this application embodiment are also applicable to different network architectures, including but not limited to relay network architecture, dual-link architecture, and vehicle-to-everything (V2X) communication architecture. The aforementioned network devices can be access network devices, such as eNodeB, NR base stations, or access points (APs). Access network devices can be connected to core network elements via wired or wireless connections.

[0141] In this embodiment, the terminal device is a device with wireless communication capabilities, and may be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal device, vehicle-mounted terminal device, industrial control terminal device, UE unit, UE station, mobile station, remote station, remote terminal device, mobile device, UE terminal device, wireless communication device, UE agent, or UE device, etc. The terminal device can be fixed or mobile. It should be noted that the terminal device can support at least one wireless communication technology, such as LTE, New Radio (NR), and Wideband Code Division Multiple Access (WCDMA). For example, terminal devices can be mobile phones, tablets, desktop computers, laptops, all-in-one computers, in-vehicle terminals, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, wearable devices, terminal devices in future mobile communication networks, or terminal devices in future evolved public land mobile networks (PLMNs), etc. In some embodiments of this application, the terminal device may also be a device with transceiver functions, such as a chip system. The chip system may include a chip, and may also include other discrete components.

[0142] In this embodiment, the network device is a device that provides wireless communication functions for terminal devices, and can also be referred to as a radio access network (RAN) device or access network element. The access network device can support at least one wireless communication technology, such as LTE, NR, etc. For example, the access network device includes, but is not limited to: next-generation node B (gNB), evolved node B (eNB), radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved node B, or home node B (HNB)), baseband unit (BBU), transmitting and receiving point (TRP), transmitting point (TP), mobile switching center, etc., in a 5th-generation (5G) mobile communication system. Network devices can also be radio controllers, centralized units (CUs), and / or distributed units (DUs) in cloud radio access network (CRAN) scenarios, or access network devices can be relay stations, access points, vehicle-mounted devices, terminal devices, wearable devices, and access network devices in future mobile communications or future evolved PLMNs. In some embodiments, access network devices can also be apparatuses that provide wireless communication functions for terminal devices, such as chip systems. For example, a chip system may include chips, and may also include other discrete devices.

[0143] Secondly, some technical background and technical issues involved in this application will be explained:

[0144] I. Random Access (RA)

[0145] 1.1.4-step RACH

[0146] As shown in Figure 2, 4-step RACH refers to the process of terminal devices and network devices completing network access through four steps of interaction.

[0147] Step 1: Message 1 (MSG 1) – The terminal equipment, such as the User Equipment (UE), randomly selects a preamble (random access preamble, used to identify the terminal equipment during random access) from the preamble pool. Based on the PRACH (Physical Random Access Channel) resources configured by the network equipment, such as the gNB, it initiates random access contention on the PRACH resource associated with the best downlink beam, and transmits MSG 1. After sending MSG 1, the UE calculates the RA-RNTI (Random Access-Radio Network Temporary Identifier) ​​associated with the PRACH occasion in order to receive the corresponding RAR (Random Access Response).

[0148] Step 2: Message 2 (MSG 2), after the UE sends the preamble, it will continuously listen to the PDCCH (carrying DCI format 1_0, scrambled with RA_RNTI) within the RA response window to receive the RAR. If no RAR reply is received from the gNB within the RAR time window, the random access procedure is considered to have failed.

[0149] The RAR time window is sent from the gNB to the UE via a System Information Block (SIB) message in the Radio Resource Control (RRC) layer. For example, sl20 represents 20 consecutive slots, used by the UE to listen for a RAR response from the gNB on the PDCCH channel after the preamble has been sent.

[0150] When decoding the preamble, the gNB obtains the time-frequency position of the preamble, and then determines the RA-RNTI to be used in the RAR. It scrambles the DCI with the RA-RNTI and sends it out through the PDCCH. The UE obtains Downlink Control Information (DCI) in the PDCCH common search space, detects the PDSCH using the time-frequency position indicated by the DCI, and decodes the RAR information carried on the PDSCH. When the UE successfully receives a RAR (decoded using the RA-RNTI calculated in step one), and the preamble in the RAR is the same as the preamble sent by the UE, it considers the RAR successfully received, obtains uplink resources (UL grant), and can send uplink data. MSG 2 allocates a temporary identifier for the UE, as well as the time-frequency domain resource positions required for the UE to perform the third step, MSG 3 transmission.

[0151] Step 3: Message 3 (MSG 3), the first uplink data scheduling transmission. The UE transmits MSG 3 according to the time-frequency resource location indicated by the UL grant in MSG 2. MSG 3 can be a Common Control Channel Service Data Unit (CCCH SDU) or a Cell-Radio Network Temporary Identifier Medium Access Control Control Element (C-RNTI MAC CE), which contains a UE ID. This ID can be a random number or a temporary identifier assigned to the UE by the network device in MSG 2. After sending MSG 3, the UE starts a contention resolution timer (ra-ContentionResolutionTimer, sent via SIB message from the RRC layer on the network side) to continuously listen to the PDCCH.

[0152] Step 4: Message 4 (MSG 4), contention resolution. The gNB randomly selects one MSG 3 from many options, encapsulates it into a contention resolution identity MAC CE, scrambles it with the UE's TC-RNTI corresponding to that MSG 3, and sends it out via PDCCH (carrying DCI format 1_0). Each UE receives the PDCCH scrambled with the UE's temporary identifier TC-RNTI indicated in MSG 2 to obtain the MSG 4 transmission resource location and receive MSG 4. MSG 4 indicates the first 48 bits of the content transmitted by the selected MSG 3 through the MAC CE format, which includes the UE ID carried in the selected MSG 3. After receiving MSG 4, each UE successfully descrambles the PDCCH with the TC-RNTI. If the content of the descrambled PDCCH matches the UE ID in its own sent MSG 3, then random access is considered complete.

[0153] After receiving MSG 4, the UE will send a Hybrid Automatic Repeat reQuest Acknowledge (HARQ-ACK) message to the gNB via PUCCH. In this message, ACK indicates that MSG 4 was received correctly, and NACK indicates that it was received incorrectly.

[0154] Meanwhile, in the 5th Generation Mobile Communication Technology Release 17 (5G Rel-17) standard, in order to increase uplink coverage, the UE sends MSG 1 through the random access resource configured by the network to indicate MSG 3 repetition, thereby informing the gNB to request MSG 3 retransmission indication. The gNB then informs the number of transmissions of MSG 3 in the high two bits of the MCS in the RAR of the response to MSG 2.

[0155] 1.2.2-step RACH

[0156] Since 4-step RACH requires four steps of interaction between the UE and gNB to complete, the latency is too long for latency-sensitive terminals. Therefore, 2-step RACH was proposed to enhance the original 4-step RACH. Specifically, as shown in Figure 3, in 2-step RACH, MSG 1 and MSG 3 from 4-step RACH are merged into a single message A (Message A, MSG A), and MSG 2 and MSG 4 are merged into a single message B (Message B, MSG B). MSG A must contain at least the content of MSG 1 / MSG 3 from 4-step RACH, and MSG B must contain at least the content of MSG 2 / MSG 4 from 4-step RACH.

[0157] In MSG A, the data portion is 72 bits long in the inactive state and 56 bits long in other states. MSG A can be divided into two parts: a preamble portion used to send the preamble to the gNB via PRACH, equivalent to MSG 1 in 4-step RACH; and a payload portion used to send the payload to the gNB via PUSCH, which can contain content similar to MSG 2 in 4-step RACH. In practice, these two parts are sent simultaneously, together forming MSG A.

[0158] II. Upward Power Control

[0159] 2.1. PRACH Power Control

[0160] PRACH power control refers to the control of uplink transmit power when sending uplink messages to network devices via PRACH. In random access, it is mainly used to determine the uplink transmit power of MSG 1 and the preamble message in MSG A sent via PRACH.

[0161] Specifically, the uplink transmit power of PRACH can be expressed by formula (1): P PRACH,b.f.c (i)=min{P CMAX,f,c (i),P PRACH,target,f,c +PL b,f,c}………(1)

[0162] Where i represents the transmission timing, c represents the cell identifier, f represents the carrier identifier in cell c, b represents the active uplink carrier bandwidth (UL BWP) identifier for carrier f in cell c, and P represents the active uplink carrier bandwidth (UL BWP) identifier for carrier f in cell c. PRACH,b,f,c (i) is the uplink transmit power of the PRACH on the active UL BWP b of carrier f in cell c when transmission timing i is i.CMAX,f,c (i) represents the maximum output power of PRACH on carrier f in cell c when the terminal device transmits data at time i. PRACH,target,f,c The sum of the power configuration for high-rise buildings and the power increase of PRACH, PL b,f,c The path loss can be calculated based on the DL RS associated with the PRACH transmission.

[0163] Furthermore, for 4-step RACH, P PRACH,target,f,c It can be expressed by formula (2):

[0164] Wherein, preambleReceivedTargetPower is the initial power of the random access preamble in 4-step RACH.

[0165] DELTA_PREAMBLE represents the power bias for different PRACH formats, as shown in Table 1:

[0166] Table 1

[0167] PREAMBLE_POWER_RAMPING_COUNTER is a counter for power ramp-up during preamble retransmission. Its initial value is 0, and the counter increments by 1 for each preamble retransmission. The physical layer can instruct the MAC layer to pause counting, that is, not to increment by 1 for a certain preamble, for example, when the SSB associated with the previous preamble is different from that of the current preamble.

[0168] PREAMBLE_POWER_RAMPING_STEP is the power ramp step size. For 4-step RACH, the configuration value of the parameter powerRampingStep can be used.

[0169] POWER_OFFSET_2STEP_RA is a parameter for backtracking from 2-step RACH to 4-step RACH, representing the power ramp-up value of 2-step RACH before backtracking, which can be expressed by formula (3):

[0170] MSGA_PREAMBLE_POWER_RAMPING_STEP is the power ramp step size in 2-step RACH before rollback.

[0171] Furthermore, for 2-step RACH, P PRACH,target,f,c It can be expressed by formula (4):

[0172] Among them, msgA-preambleReceivedTargetPower is the initial power of the random access preamble in 2-step RACH.

[0173] PREAMBLE_POWER_RAMPING_STEP is the power ramp step size. For 2-step RACH, the configuration value of parameter msgA-PreamblePowerRampingStep can be used.

[0174] 2.2. PUSCH Power Control

[0175] PUSCH power control refers to the control of uplink transmit power when sending uplink messages to network devices via PUSCH. In random access, it is mainly used to determine the uplink transmit power of the payload messages in MSG 3 and MSG A sent via PUSCH.

[0176] Specifically, the uplink transmit power of the PUSCH can be expressed by formula (5):

[0177] Where j is the index of the configuration set, and its value varies depending on the use case. Since this application only involves random access scenarios, j = 0 in this application. qd is the index of the RS resource, and l is the index of the power control adjustment state.

[0178] Furthermore, P O_PUSCH,b,f,c(j) The target power spectrum can be expressed by formula (6): P O_PUSCH,b,f,c (j)=P O_NOMINAL,PUSCH,f,c (j)+P O_UE_PUSCH,b,f,c (j)………(6)

[0179] Among them, P O_NOMINAL,PUSCH,f,c (j) is a public configuration, P O_UE_PUSCH,b,f,c (j) is a dedicated configuration for terminal devices.

[0180] Since j = 0 in this application, therefore, P O_UE_PUSCH,b,f,c (0) = 0, then in this application, P O_PUSCH,b,f,c (0) can be expressed by formula (7): P O_PUSCH,b,f,c (0)=P O_NOMINAL,PUSCH,f,c (0)………(7)

[0181] Furthermore, for MSG 3, P O_NOMINAL,PUSCH,f,c (0) can be expressed by formula (8): P O_NOMINAL,PUSCH,f,c (0)=P O_PRE +Δ PREAMBLE,Msg3 ………(8)

[0182] Among them, P O_PRE The power during preamble transmission for MSG 3 is configured by the parameter `preambleReceivedTargetPower`. `ΔPREAMBLE,Msg3` is the power offset between MSG 3 and the corresponding MSG 1, configured by the parameter `msg3-DeltaPreamble`. If the parameter `msg3-DeltaPreamble` is not configured, then `ΔPREAMBLE,Msg3` is 0dB.

[0183] Furthermore, regarding the payload portion of MSG A, P O_NOMINAL,PUSCH,f,c (0) can be expressed by formula (9): P O_NOMINAL,PUSCH,f,c (0)=P O_PRE +Δ MsgA_PUSCH ………(9)

[0184] Among them, P O_PRE Configured by the parameter msgA-preambleReceivedTargetPower. If the parameter msgA-preambleReceivedTargetPower is not configured, then PO_PRE is configured by the parameter preambleReceivedTargetPower. Δ MsgA_PUSCH Configured by parameters msgA-DeltaPreamble and deltaPreamble; if neither parameter msgA-DeltaPreamble nor deltaPreamble is configured, then Δ MsgA_PUSCH =Δ PREAMBLE,Msg3 dB.

[0185] Furthermore, for MSG 3, α b,f,c (0) is the road loss compensation coefficient, determined by the parameter msg3-Alpha configured in the higher-level signaling. Specifically, if the higher-level signaling is configured with the msg3-Alpha parameter, then α b,f,c (0) = msg3 - Alpha, otherwise α b,f,c (0) = 1. For the payload portion in MSG A, α b,f,c (0) is also the road loss compensation coefficient, determined by the parameter msgA-Alpha configured in the higher-level signaling. Specifically, if the higher-level signaling is configured with the msgA-Alpha parameter, then α b,f,c (0) = msgA - Alpha, otherwise α b,f,c (0) = 1.

[0186] Furthermore, PL b,f,c (q dThe path loss is calculated using the reference signal, specifically the downlink path loss estimate performed by the terminal device based on the reference signal. The reference signal for calculating the path loss can be the SSB or CSI-RS. If the terminal device does not have PUSCH-PathlossReferenceRS configured, or if the terminal device has not configured dedicated higher-layer parameters, the path loss is calculated using the SSB obtained from the MIB as the reference signal. If the PUSCH is a payload message in the RAR uplink grant scheduling (MSG 3) or MSG A, the RS resource index q used by the terminal device... d The same reference signal is used as the PRACH transmission. For example, PL... b,f,c (q d ) can be expressed by formula (10): PL b,f,c (q d )=referenceSignalPower-higher layer filtered RSRP…………(10)

[0187] The `referenceSignalPower` parameter is configured by higher-layer parameters, while the RSRP filter is configured by the `QuantityConfig` parameter in the `rrcReconfiguration` signaling. If periodic CSI-RS reception is not configured, `referenceSignalPower` is configured by the higher-layer parameter `ss-PBCH-BlockPower`. If periodic CSI-RS reception is configured, `referenceSignalPower` is configured by either the higher-layer parameter `ss-PBCH-BlockPower` or `powerControlOffsetSS`. `powerControlOffsetSS` configures the power offset of the CSI-RS relative to the SSB. If `powerControlOffsetSS` is not configured, the offset is the default value of 0dB.

[0188] Furthermore, This represents the number of PUSCH RBs.

[0189] Furthermore, Δ TF,b,f,c (i) represents the power adjustment amount of the MCS, determined by the parameter deltaMCS. Specifically, if the value of deltaMCS is enabled, then Ks = 1.25; if the parameter deltaMCS is not configured, then Ks = 0.

[0190] When Ks = 0, Δ TF,b,f,c (i) = 0.

[0191] When Ks = 1.25, Δ TF,b,f,c(i) can be expressed by formula (11):

[0192] For uplink data transmission, BPRE can be expressed by formula (12):

[0193] Where C is the number of code blocks, Kr is the code block size, and N is the number of code blocks. RE The number of REs can be expressed by formula (13):

[0194] in, For transmission timing i, the number of PUSCH symbols per RB. The number of subcarriers for symbol j does not include DMRS and PTRS.

[0195] When PUSCH contains uplink data

[0196] For CSI transmission of uplink data, BPRE can be expressed by formula (14):

[0197] Where Qm is the modulation order and R is the target code rate, described in TS 38.214, these parameters are provided in DCI. When PUSCH contains only CSI and not uplink data... The specific value is determined according to Table 9.3-2 of TS 38.213.

[0198] Furthermore, f b,f,c (i,l) represents the PUSCH power adjustment value. For MSG 3, if the terminal device receives a RAR message, f b,f,c (i,l) can be expressed by formula (15): f b,f,c (i,l)=ΔP rampup,b,f,c +δmsg2,b,f,c………(15)

[0199] Where δmsg2,b,f,c represents the power control adjustment of the Transmit Power Control (TPC), determined by the TPC command in the RAR message. It can be either the RAR for a Type-1 RA or the fallback RAR for a Type-2 RA. ΔP rampup,b,f,c The total power boost of MSG 1 can be expressed by formula (16):

[0200] Where ΔPrampup_requested,b,f,c is the total power ramp-up value of the higher-layer notification from the first to the last preamble, which can be expressed by formula (17):

[0201] For an explanation of PREAMBLE_POWER_RAMPING_COUNTER and PREAMBLE_POWER_RAMPING_STEP, please refer to section 2.1.PRACH Power Control.

[0202] Furthermore, for the payload message in the MSG, f b,f,c (i,l) can be expressed by formula (18): f b,f,c (i,l)=ΔP rampup,b,f,c ………(18)

[0203] 2.3. PUCCH Power Control

[0204] PUCCH power control refers to the control of uplink transmit power when sending uplink messages to network devices via PUCCH. In random access, it is mainly used to determine the uplink transmit power of MSG 4HARQ-ACK sent via PUCCH.

[0205] Specifically, the uplink transmit power of the PUCCH can be expressed by formula (19):

[0206] Among them, P O_PUCCH,b,f,c (q u ) represents the initial power of the PUCCH, which can be configured in higher-layer signaling. If not configured, its value is 0. Δ F_PUCCH (F) represents the value corresponding to the PUCCH format field, which can be pre-configured. The PUCCH format field can include PUCCH format 0, PUCCH format 1, PUCCH format 2, PUCCH format 3, PUCCH format 4, etc. If no PUCCH format field is configured, then Δ F_PUCCH The value of (F) is 0. Δ TF,b,f,c (i) It is related to the number of symbols corresponding to the PUCCH format and the length of information that needs to be transmitted in the PUCCH. qu refers to the index of the selected PO_UE_PUCCH in p0-Set; l is the power adjustment state of the PUCCH; μ refers to the subcarrier spacing (SCS) configuration of the PUCCH.

[0207] Furthermore, g b,f,c(i,l) represents the PUCCH power adjustment amount. For MSG 4HARQ-ACK, g b,f,c (i,l) can be expressed by formula (20): g b,f,c (i,l)=ΔP rampup,b,f,c +δ b,f,c ………(20)

[0208] Wherein, ΔP rampup,b,f,c The power ramp-up for PRACH transmission power can be expressed by formula (21): ΔP rampup,b,f,c = min[max(0,P CMAX,f,c -(P O_PUCCH,b,f,c +PL b,f,c (q d )+Δ F_PUCCH +Δ TF,b,f,c +g b,f,c )), ΔPrampup_requested,b,f,c]…………(21)

[0209] Where δb,f,c can refer to the power adjustment value corresponding to the PUCCH configured by the network device in the TPC command; the TPC command value indicated in the random access response of the PRACH transmission in a Type-1 random access procedure, or in the random access response of the MSGA transmission in a Type-2 random access procedure corresponding to a RAR message with rollback RAR; or the TPC command value indicated in the successRAR corresponding to the MSGA transmission for a Type-2 random access procedure.

[0210] ΔPrampup_requested,b,f,c is the total power ramp-up value from the first to the last preamble in the higher-layer notification, which can be found in the explanation in 2.2.PUSCH power control.

[0211] 2.4. RACH Configuration in SBFD System

[0212] The SBFD system supports random access and supports RACH Option 1, as shown in Figure 4, which uses a single RACH configuration and is based solely on the existing parameters of that single RACH setting; and RACH Option 2, as shown in Figure 5, which utilizes two independent RACH settings, including an existing RACH setting (or legacy RACH configuration) and a new RACH setting (or additional RACH configuration).

[0213] For Option 1, `msg1 FrequencyStart` can be reinterpreted in `rach ConfigCommon`, as shown in Figure 6. Based on this, the Random Access Opportunity (RO) of Option 1 is divided into two categories: one where the RO is within the SBFD DL symbol, and the other where the RO is within the flexible symbol and UL symbol. For Option 2, its RO can also be divided into two categories: one where the RO is obtained through the traditional RACH setting, and the other where the RO is obtained through the additional RACH setting.

[0214] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the above content and the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Furthermore, these embodiments can be related to each other or independent of each other, and the same content between different embodiments can be mutually referenced, which will not be elaborated upon here.

[0215] Referring to Figure 7, which is a flowchart illustrating a method for determining uplink transmit power in random access according to an embodiment of this application, this method is applied to the communication system 100 shown in Figure 1, and can be implemented by the terminal device 102 in the communication system 100. As shown in Figure 7, the method includes:

[0216] S701: Determine the parameter value of the uplink transmit power parameter based on the basic information of the message to be sent.

[0217] To facilitate understanding of the subsequent technical solutions, before describing the specific implementation of step S701, the basic information of the message to be sent in this embodiment will be explained first. Specifically, the basic information may include at least one of the following: the type of random access timing of the message to be sent, the type of random access timing when the terminal device previously sent a message, and the type of transmission symbol used by the message to be sent.

[0218] <1> Types of random access opportunities:

[0219] Based on the classification of RO in section 2.4 above, this embodiment proposes a new classification method for RO, as follows:

[0220] Classification Method 1: Divide ROs into legacy ROs and additional ROs.

[0221] Legacy RO refers to a RO that is valid for legacy UEs, or non-SBFD aware UEs. Specifically, for Option 1, a legacy RO refers to a RO within the UL symbol or flexible symbol configured by the higher-layer signaling tdd-UL-DL-ConfigurationCommon. For Option 2, a legacy RO refers to a RO within a random access channel that does not contain a sub-band full-duplex symbol, or in other words, a RO configured by the legacy RACH configuration.

[0222] Additional ROs refer to ROs that are invalid for legacy UEs (non-SBFD aware UEs) but valid for subband full-duplex terminal equipment (SBFD aware UEs). Specifically, for Option 1, an additional RO refers to the RO within the UL symbol subband configured by the higher-layer signaling tdd-UL-DL-ConfigurationCommon. For Option 2, an additional RO refers to the RO within the random access channel containing the subband full-duplex symbol, or in other words, the RO configured by the additional RACH configuration.

[0223] Classification method 2: RO is divided into non-SBFD RO and SBFD RO.

[0224] non-SBFD RO, that is, RO within the non-subband full-duplex symbol.

[0225] SBFD RO, which is the RO within the subband full-duplex symbol.

[0226] In this embodiment, legacy RO and non-SBFD RO are collectively referred to as the first type, and additional RO and SBFD RO are collectively referred to as the second type.

[0227] <2> The type of transmission symbol used in the message to be sent:

[0228] If the message to be sent uses non-subband full-duplex symbols for transmission, then the type of transmission symbols used in the message to be sent is the third type; if the message to be sent uses subband full-duplex symbols for transmission, then the type of transmission symbols used in the message to be sent is the fourth type.

[0229] Meanwhile, to address the lack of definition for the uplink transmit power of terminal devices sending messages to network devices during the RA process after the introduction of SBFD, this application configures a new set of settings corresponding to SBFD based on the existing uplink transmit power configuration. Therefore, in this application, the existing uplink transmit power configuration is referred to as the first configuration, and the newly configured uplink transmit power configuration is referred to as the second configuration.

[0230] The following will describe step S701 in detail based on the above definition:

[0231] In this embodiment, the message to be sent is a message sent by the terminal device to the base station during random access in a subband full-duplex system. Referring to sections 1.1 and 1.2, during the RA process, the message to be sent may include at least one of the following: MSG 1, MSG 3, MSG A, and MSG 4HARQ-ACK. The following will illustrate this using MSG 1, MSG 3, MSG A, and MSG 4HARQ-ACK as examples:

[0232]

MSG 1

[0233] In this embodiment, when the message to be sent is MSG 1, the uplink transmit power parameters may include a first parameter, a second parameter, and a third parameter. The first parameter characterizes the power ramp-up step size during preamble transmission, the second parameter characterizes the number of power ramp-ups during preamble transmission, and the third parameter characterizes the initial power during random access. Referring to section 2.1, when the message to be sent is MSG 1, the first parameter is the power ramp-up step size PREAMBLE_POWER_RAMPING_STEP, the second parameter is the power ramp-up counter PREAMBLE_POWER_RAMPING_COUNTER during preamble retransmission, and the third parameter is the initial power of the random access preamble, preambleReceivedTargetPower.

[0234] (a) The first parameter PREAMBLE_POWER_RAMPING_STEP

[0235]

Example 1

[0236] In this embodiment, the value of the first parameter PREAMBLE_POWER_RAMPING_STEP can be determined by the RO type of MSG 1, as follows:

[0237] If the RO of MSG 1 is of type 1 (legacy RO / non-SBFD RO), the value of the first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A1 in the first configuration. This parameter A1 is used to calculate the uplink transmit power of MSG 1; for example, parameter A1 could be the parameter powerRampingStep.

[0238] If the RO of MSG 1 is of type 2 (additional RO / SBFD RO), the value of the first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A2 in the second configuration. This parameter A2 is the parameter for calculating the uplink transmit power of MSG 1 in the new configuration. For example, parameter A2 can be the parameter powerRampingStep1 in the new configuration.

[0239]

Example 2

[0240] In this embodiment, the value of the first parameter PREAMBLE_POWER_RAMPING_STEP can also be determined by the RO type of MSG 1 and the RO type of the previous message, as follows:

[0241] If the RO of MSG 1 is type 1 (legacy RO / non-SBFD RO), and the RO of MSG 1 in its previous message transmission was also type 1 (legacy RO / non-SBFD RO), then the value of the first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A1 in the first configuration. Parameter A1 is used to calculate the uplink transmit power of MSG 1; for example, parameter A1 could be the parameter powerRampingStep.

[0242] If the RO of MSG 1 is type 1 (legacy RO / non-SBFD RO), and the RO of MSG 1 in its previous message transmission was type 2 (additional RO / SBFD RO), the value of the first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A2 in the second configuration. Parameter A2 is the parameter for calculating the uplink transmit power of MSG 1 in the new configuration; for example, parameter A2 could be the newly configured parameter powerRampingStep1.

[0243] If the RO of MSG 1 is type 2 (additional RO / SBFD RO), and the RO of MSG 1 in its previous message transmission was type 1 (legacy RO / non-SBFD RO), the value of the first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A3 in the second configuration. Parameter A3 is the parameter for calculating the uplink transmit power of MSG 1 in the new configuration; for example, parameter A3 could be the newly configured parameter powerRampingStep2.

[0244] If the RO of MSG 1 is type II (additional RO / SBFD RO), and the RO of MSG 1 in its previous message transmission was also type II (additional RO / SBFD RO), then the value of the first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A4 in the newly configured fourth configuration. Parameter A4 is the parameter used in the new configuration to calculate the uplink transmit power of MSG 1; for example, parameter A4 could be the newly configured parameter powerRampingStep3.

[0245] The parameter that determines the value of the first parameter, PREAMBLE_POWER_RAMPING_STEP, can be selected from Table 2.

[0246] Table 2

[0247] For example, the ROs when the terminal device sends MSG 1 multiple times are shown in Table 3:

[0248] Table 3

[0249] For RO No. 1, since it does not have a previous RO, it is a legacy RO and belongs to the first type. Therefore, the value of its corresponding first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A1 in the first configuration, namely the high-level parameter powerRampingStep.

[0250] For RO No. 2, since its previous RO was a legacy RO of the first type, and it is itself an additional RO of the second type, the value of its corresponding first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A3 in the second configuration, such as the newly configured high-level parameter powerRampingStep2.

[0251] (ii) The second parameter PREAMBLE_POWER_RAMPING_COUNTER

[0252]

Example 3

[0253] In this embodiment, the value of the second parameter, PREAMBLE_POWER_RAMPING_COUNTER, is the value of the counter for power ramp-up during preamble retransmission. In the existing configuration, the corresponding counter is only configured for non-SDFB cases. In this embodiment, to adapt to the system after the introduction of SDFB, a new counter corresponding to the SDFB case is configured to distinguish it from the existing counter.

[0254] In simple terms, the existing PREMBLE_POWER_RAMPING_COUNTER counter value is used for MSG 1 corresponding to the first type (legacy RO / non-SBFD RO). That is, when MSG 1 is sent using legacy RO / non-SBFD RO, the existing PREMBLE_POWER_RAMPING_COUNTER counter value is incremented by 1.

[0255] A newly configured counter, PREAMBLE_POWER_RAMPING_COUNTER1, is introduced. Its value, counter1, is used for MSG 1 corresponding to the second type (additional RO / SBFD RO). Specifically, when MSG 1 is sent using additional RO / SBFD RO, the newly configured PREAMBLE_POWER_RAMPING_COUNTER1 counter value, counter1, is incremented by 1. Similarly, as with the existing PREAMBLE_POWER_RAMPING_COUNTER counter, the physical layer can instruct the MAC layer to pause the counting of the newly configured PREAMBLE_POWER_RAMPING_COUNTER1 counter. That is, it will not increment for a given preamble, such as when the SSB associated with the previous preamble is different from that of the current preamble.

[0256] Therefore, in this embodiment, the value of the second parameter PREAMBLE_POWER_RAMPING_COUNTER can be determined by the RO type of MSG 1, as follows:

[0257] If the RO of MSG 1 is of type 1 (legacy RO / non-SBFD RO), the value of the second parameter PREAMBLE_POWER_RAMPING_COUNTER is determined by parameter A1 in the first configuration. This parameter A1 is used to calculate the uplink transmit power of MSG 1. For example, parameter A1 can be the existing PREAMBLE_POWER_RAMPING_COUNTER counter value.

[0258] If the RO of MSG 1 is of type 2 (additional RO / SBFD RO), the value of the second parameter PREAMBLE_POWER_RAMPING_COUNTER is determined by parameter A2 in the second configuration. Parameter A2 is the parameter for calculating the uplink transmit power of MSG 1 in the new configuration. For example, parameter A2 can be the counter value counter1 of PREAMBLE_POWER_RAMPING_COUNTER1 in the new configuration.

[0259] In this case, for RO number 5 in Table 3, the values ​​of its power counters are counter = 2 and counter1 = 3 respectively.

[0260] This method corresponds to the method for determining the first parameter in Example 1, and is used to calculate the Preamble power ramp-up in conjunction with the method in Example 1. Specifically, the value of the corresponding power counter can be substituted into the following formula (22) for calculation: (PREAMBLE_POWER_RAMPING_COUNTER-1)×powerRampingStep +(PREAMBLE_POWER_RAMPING_COUNTER1-1)×powerRampingStep1 ………(22)

[0261]

Example 4

[0262] In this embodiment, the situation after the introduction of SDFB can be further refined by combining the current RO type and the previous RO type.

[0263] For example, the existing PREAMBLE_POWER_RAMPING_COUNTER counter value is used for MSG 1 when the current RO is of type 1 (legacy RO / non-SBFD RO) and the previous RO was of type 1 (legacy RO / non-SBFD RO). That is, when MSG 1 is sent using legacy RO / non-SBFD RO and MSG 1 was also sent using legacy RO / non-SBFD RO, the existing PREAMBLE_POWER_RAMPING_COUNTER counter value is incremented by 1.

[0264] A new counter, PREAMBLE_POWER_RAMPING_COUNTER1, is introduced. Its value, counter1, is used to record MSG 1 when the current RO is of type 1 (legacy RO / non-SBFD RO) and the previous RO was of type 2 (additional RO / SBFD RO). That is, when MSG 1 is currently sent using legacy RO / non-SBFD RO and MSG 1 was previously sent using additional RO / SBFD RO, the value of counter1 in the newly configured PREAMBLE_POWER_RAMPING_COUNTER1 is incremented by 1.

[0265] A new counter, PREAMBLE_POWER_RAMPING_COUNTER2, is introduced. Its value, counter2, is used to record MSG 1 when the current RO is of type 2 (additional RO / SBFD RO) and the previous RO was of type 1 (legacy RO / non-SBFD RO). That is, when MSG 1 is currently sent using additional RO / SBFD RO and MSG 1 was previously sent using legacy RO / non-SBFD RO, the value of the newly configured PREAMBLE_POWER_RAMPING_COUNTER2 counter, counter2, is incremented by 1.

[0266] A new counter, PREAMBLE_POWER_RAMPING_COUNTER3, is introduced. Its value, counter3, is used to record MSG 1 when the current RO is of type 2 (additional RO / SBFD RO) and the previous RO was also of type 2 (additional RO / SBFD RO). That is, when MSG 1 is currently sent using additional RO / SBFD RO and the previous MSG 1 was also sent using additional RO / SBFD RO, the value of counter3 in the newly configured PREAMBLE_POWER_RAMPING_COUNTER3 is incremented by 1.

[0267] Similarly, as with the existing PREMBLE_POWER_RAMPING_COUNTER counter, the physical layer can instruct the MAC layer to pause the counting of the newly configured PREMBLE_POWER_RAMPING_COUNTER1, PREMBLE_POWER_RAMPING_COUNTER2, and PREMBLE_POWER_RAMPING_COUNTER3 counters. That is, the counters will not be incremented by 1 for a certain preamble, such as when the SSB associated with the previous preamble is different from that associated with the current preamble.

[0268] Therefore, in this embodiment, the value of the second parameter PREAMBLE_POWER_RAMPING_COUNTER can also be determined by the RO type of MSG 1 and the previous RO type, as follows:

[0269] If the RO of MSG 1 is type 1 (legacy RO / non-SBFD RO), and the RO of MSG 1 in its previous message transmission was also type 1 (legacy RO / non-SBFD RO), then the value of the second parameter, PREAMBLE_POWER_RAMPING_COUNTER, is determined by parameter A1 in the first configuration. Parameter A1 is used to calculate the uplink transmit power of MSG 1; for example, parameter A1 could be the existing PREAMBLE_POWER_RAMPING_COUNTER counter value.

[0270] If the RO of MSG 1 is type 1 (legacy RO / non-SBFD RO), and the RO of MSG 1 in its previous message transmission was type 2 (additional RO / SBFD RO), the value of the second parameter PREAMBLE_POWER_RAMPING_COUNTER is determined by parameter A2 in the second configuration. Parameter A2 is the parameter for calculating the uplink transmit power of MSG 1 in the new configuration. For example, parameter A2 could be the newly configured PREAMBLE_POWER_RAMPING_COUNTER1 counter value counter1.

[0271] If the RO of MSG 1 is type 2 (additional RO / SBFD RO), and the RO of MSG 1 in its previous message transmission was type 1 (legacy RO / non-SBFD RO), the value of the second parameter PREAMBLE_POWER_RAMPING_COUNTER is determined by parameter A3 in the second configuration. Parameter A3 is the parameter for calculating the uplink transmit power of MSG 1 in the new configuration. For example, parameter A3 could be the newly configured PREAMBLE_POWER_RAMPING_COUNTER2 counter value, counter2.

[0272] If the RO of MSG 1 is type 2 (additional RO / SBFD RO), and the RO of MSG 1 in its previous message transmission was also type 2 (additional RO / SBFD RO), then the value of the second parameter PREAMBLE_POWER_RAMPING_COUNTER is determined by parameter A4 in the second configuration. Parameter A4 is the parameter for calculating the uplink transmit power of MSG 1 in the new configuration. For example, parameter A4 could be the newly configured PREAMBLE_POWER_RAMPING_COUNTER3 counter value, counter3.

[0273] The parameter that determines the value of the second parameter, PREAMBLE_POWER_RAMPING_COUNTER, can be selected from Table 4.

[0274] Table 4

[0275] In this case, for RO number 5 in Table 3, the values ​​of its power counters are counter = 1, counter1 = 2, counter2 = 1, and counter3 = 1, respectively.

[0276] This method corresponds to the method for determining the first parameter in Example 2, and is used to calculate the Preamble power ramp-up in conjunction with the method in Example 2. Specifically, the value of the corresponding power counter can be substituted into the following formula (23) for calculation: (PREAMBLE_POWER_RAMPING_COUNTER-1)×powerRampingStep +(PREAMBLE_POWER_RAMPING_COUNTER1-1)×powerRampingStep1 +(PREAMBLE_POWER_RAMPING_COUNTER2-1)×powerRampingStep2 +(PREAMBLE_POWER_RAMPING_COUNTER3-1)×powerRampingStep3 ………(23)

[0277] (iii) The third parameter, preambleReceivedTargetPower

[0278]

Example 5

[0279] In this embodiment, the value of the third parameter, preambleReceivedTargetPower, can be determined by the RO type of MSG 1, as follows:

[0280] If the RO of MSG 1 is of type 1 (legacy RO / non-SBFD RO), the value of the third parameter, preambleReceivedTargetPower, is determined by parameter B1 in the first configuration. Parameter B1 is used to calculate the uplink transmit power of MSG 1. For example, parameter B1 can be the existing 4-step RACH random access preamble initial power, preambleReceivedTargetPower.

[0281] If the RO of MSG 1 is of type 2 (additional RO / SBFD RO), the value of the third parameter, preambleReceivedTargetPower, is determined by parameter B2 in the second configuration. This parameter B2 is the parameter for calculating the uplink transmit power of MSG 1 in the new configuration. For example, parameter B2 can be the newly configured 4-step RACH random access preamble initial power preambleReceivedTargetPower1.

[0282]

MSG 3

[0283] In this embodiment, when the message to be transmitted is MSG 3, the uplink transmit power parameters may include a fourth parameter, a fifth parameter, a sixth parameter, and a seventh parameter. The fourth parameter characterizes the power during preamble transmission, the fifth parameter characterizes the power offset of MSG 3 relative to MSG 1, the sixth parameter characterizes the path loss compensation coefficient, and the seventh parameter characterizes the power control adjustment of the TPC command. Referring to section 2.2, when the message to be transmitted is MSG 3, the fourth parameter is P. O_PRE The fifth parameter is Δ PREAMBLE,Msg3 The sixth parameter is α b,f,c (0), the seventh parameter is δmsg2,b,f,c.

[0284] (a) The fourth parameter P O_PRE

[0285]

Example 6

[0286] In this embodiment, for the fourth parameter P O_PRE The parameter value can be determined by the RO type of MSG 1 corresponding to MSG 3, as follows:

[0287] If the RO of MSG 1 corresponding to MSG 3 is of type 1 (legacy RO / non-SBFD RO), the fourth parameter P O_PRE The parameter value is determined by parameter C1 in the first configuration. Parameter C1 is used to calculate the uplink transmit power of MSG 3. For example, parameter C1 can be the existing parameter preambleReceivedTargetPower.

[0288] If the RO of MSG 1 corresponding to MSG 3 is of type 2 (additional RO / SBFD RO), the fourth parameter P O_PRE The parameter value is determined by parameter C2 in the second configuration. Parameter C2 is the parameter for calculating the uplink transmit power of MSG 1 in the new configuration. For example, parameter C2 can be the parameter preambleReceivedTargetPower1 in the new configuration.

[0289] (ii) Fifth parameter Δ PREAMBLE,Msg3

[0290]

Example 7

[0291] In this embodiment, for the fifth parameter Δ PREAMBLE,Msg3 The parameter value can be determined by the type of transmission symbol used by MSG 3, as follows:

[0292] If the transmission symbol type used by MSG 3 is type 3 (non-SBFD), the fifth parameter ΔPREAMBLE,Msg3 The parameter value is determined by parameter D1 in the first configuration. Parameter D1 is used to calculate the uplink transmit power of MSG 3; for example, parameter D1 could be parameter msg3-DeltaPreamble. If parameter msg3-DeltaPreamble is not configured, then the fifth parameter Δ... PREAMBLE,Msg3 The parameter value is the first value. This first value is the default value specified in the protocol when the relevant parameter is missing in the configuration. For example, the first value can be 0dB.

[0293] If MSG 3 uses a transmission symbol of type 4 (SBFD), the fifth parameter Δ PREAMBLE,Msg3 The parameter value is determined by parameter D2 in the second configuration. Parameter D2 is used to calculate the uplink transmit power of MSG 3; for example, parameter D2 could be the newly configured parameter msg3-DeltaPreamble1. If parameter msg3-DeltaPreamble1 is not configured, then the fifth parameter Δ... PREAMBLE,Msg3 The parameter value is determined by parameter D1, i.e., parameter msg3-DeltaPreamble. If parameter msg3-DeltaPreamble is also not configured, then the fifth parameter Δ PREAMBLE,Msg3 The parameter value is the first value, for example, 0dB.

[0294]

Example 8

[0295] In this embodiment, the fifth parameter Δ PREAMBLE,Msg3 The parameter values ​​can also be determined by the type of transmission symbol used by MSG 3 and the RO type of MSG 1 corresponding to MSG 3, as follows:

[0296] If the RO of MSG 1 corresponding to MSG 3 is of type 1 (legacy RO / non-SBFD RO), and the transmission symbol type used by MSG 3 is type 3 (non-SBFD), then the fifth parameter Δ PREAMBLE,Msg3 The parameter value is determined by parameter D1 in the first configuration. Parameter D1 is used to calculate the uplink transmit power of MSG 3; for example, parameter D1 could be parameter msg3-DeltaPreamble. If parameter msg3-DeltaPreamble is not configured, then the fifth parameter Δ... PREAMBLE,Msg3 The parameter value is the first value. This first value is the default value specified in the protocol when the relevant parameter is missing in the configuration. For example, the first value can be 0dB.

[0297] If the RO of MSG 1 corresponding to MSG 3 is of type 1 (legacy RO / non-SBFD RO), then the transmission symbol type used by MSG 3 is type 4 (SBFD), and the fifth parameter Δ PREAMBLE,Msg3 The parameter value is determined by parameter D2 in the second configuration. Parameter D2 is used to calculate the uplink transmit power of MSG 3; for example, parameter D2 could be the newly configured parameter msg3-DeltaPreamble1. If parameter msg3-DeltaPreamble1 is not configured, then the fifth parameter Δ... PREAMBLE,Msg3 The parameter value is determined by parameter D1, i.e., parameter msg3-DeltaPreamble. If parameter msg3-DeltaPreamble is also not configured, then the fifth parameter Δ PREAMBLE,Msg3 The parameter value is the first value, for example, 0dB.

[0298] If the RO of MSG 1 corresponding to MSG 3 is of type 2 (additional RO / SBFD RO), and the transmission symbol type used by MSG 3 is type 3 (non-SBFD), then the fifth parameter Δ PREAMBLE,Msg3 The parameter value is determined by parameter D3 in the second configuration. Parameter D3 is used to calculate the uplink transmit power of MSG 3; for example, parameter D3 could be the newly configured parameter msg3-DeltaPreamble2. If parameter msg3-DeltaPreamble2 is not configured, then the fifth parameter Δ... PREAMBLE,Msg3 The parameter value is determined by parameter D1, i.e., parameter msg3-DeltaPreamble. If parameter msg3-DeltaPreamble is also not configured, then the fifth parameter Δ PREAMBLE,Msg3 The parameter value is the first value, for example, 0dB.

[0299] If the RO of MSG 1 corresponding to MSG 3 is of type 2 (additional RO / SBFD RO), then the type of the transmission symbol used by MSG 3 is type 4 (SBFD), and the fifth parameter Δ PREAMBLE,Msg3 The parameter value is determined by parameter D4 in the second configuration. Parameter D4 is used to calculate the uplink transmit power of MSG 3; for example, parameter D4 could be the newly configured parameter msg3-DeltaPreamble3. If parameter msg3-DeltaPreamble3 is not configured, then the fifth parameter Δ... PREAMBLE,Msg3 The parameter value is determined by parameter D1, i.e., parameter msg3-DeltaPreamble. If parameter msg3-DeltaPreamble is also not configured, then the fifth parameter Δ PREAMBLE,Msg3 The parameter value is the first value, for example, 0dB.

[0300] That is, determine the fifth parameter Δ PREAMBLE,Msg3 The parameter values ​​can be selected from Table 5.

[0301] Table 5

[0302] For example, as shown in Figure 8, the fifth parameter Δ of MSG 3 of Tx instance 0 PREAMBLE,Msg3 The parameter value is configured using the parameter msg3-DeltaPreamble; the fifth parameter Δ of MSG 3 for Tx instance 1. PREAMBLE,Msg3 The parameter value is configured using the parameter msg3-DeltaPreamble3; the fifth parameter Δ of MSG 3 in Tx instance 2. PREAMBLE,Msg3 The parameter value is configured using parameter msg3-DeltaPreamble1; the fifth parameter Δ of MSG 3 for Tx instance 3. PREAMBLE,Msg3 The parameter value is configured using the parameter msg3-DeltaPreamble2.

[0303] (III) The sixth parameter α b,f,c (0)

[0304]

Example 9

[0305] In this embodiment, for the sixth parameter α b,f,c The value of parameter (0) can be determined by the type of transmission symbol used by MSG 3, as follows:

[0306] If the transmission symbol type used by MSG 3 is type 3 (non-SBFD), the sixth parameter α b,f,c The parameter value of (0) is determined by parameter E1 in the first configuration. Parameter E1 is used to calculate the uplink transmit power of MSG 3; for example, parameter E1 could be parameter msg3-Alpha. Alternatively, the sixth parameter α... b,f,c The parameter value of (0) is the second value, which is the default value of the sixth parameter specified in the protocol. For example, the second value can be 1.

[0307] If MSG 3 uses a transmission symbol of type 4 (SBFD), the sixth parameter α b,f,c The parameter value of (0) is determined by parameter E2 in the second configuration. Parameter E2 is used to calculate the uplink transmit power of MSG 3; for example, parameter E2 could be the newly configured parameter msg3-Alpha1. Alternatively, the sixth parameter α... b,f,c The parameter value of (0) is the second value, such as 1.

[0308]

Example 10

[0309] In this embodiment, the sixth parameter α b,f,c The parameter value of (0) can also be determined by the type of transmission symbol used by MSG 3 and the RO type of MSG 1 corresponding to MSG 3, as follows:

[0310] If the RO of MSG 1 corresponding to MSG 3 is of type 1 (legacy RO / non-SBFD RO), and the transmission symbol type used by MSG 3 is type 3 (non-SBFD), then the sixth parameter α... b,f,c The parameter value of (0) is determined by parameter E1 in the first configuration. Parameter E1 is used to calculate the uplink transmit power of MSG 3; for example, parameter E1 could be parameter msg3-Alpha. Alternatively, the sixth parameter α... b,f,c The parameter value of (0) is the second value, which is the default value of the sixth parameter specified in the protocol. For example, the second value can be 1.

[0311] If the RO of MSG 1 corresponding to MSG 3 is of type 1 (legacy RO / non-SBFD RO), then the type of the transmission symbol used by MSG 3 is type 4 (SBFD), and the sixth parameter α... b,f,c The parameter value of (0) is determined by parameter E2 in the second configuration. Parameter E2 is used to calculate the uplink transmit power of MSG 3; for example, parameter E2 could be the newly configured parameter msg3-Alpha1. Alternatively, the sixth parameter α... b,f,c The parameter value of (0) is the second value, such as 1.

[0312] If the RO of MSG 1 corresponding to MSG 3 is of type 2 (additional RO / SBFD RO), and the type of the transmission symbol used by MSG 3 is type 3 (non-SBFD), then the sixth parameter α... b,f,c The parameter value of (0) is determined by parameter E3 in the second configuration. Parameter E3 is used to calculate the uplink transmit power of MSG 3; for example, parameter E3 could be the newly configured parameter msg3-Alpha2. Alternatively, the sixth parameter α... b,f,c The parameter value of (0) is the second value, such as 1.

[0313] If the RO of MSG 1 corresponding to MSG 3 is of type 2 (additional RO / SBFD RO), then the type of the transmission symbol used by MSG 3 is type 4 (SBFD), and the sixth parameter α... b,f,cThe parameter value of (0) is determined by parameter E4 in the second configuration. Parameter E4 is used to calculate the uplink transmit power of MSG 3; for example, parameter E4 could be the newly configured parameter msg3-Alpha3. Alternatively, the sixth parameter α... b,f,c The parameter value of (0) is the second value, such as 1.

[0314] That is, determine the sixth parameter α b,f,c The parameter values ​​for (0) can be selected from Table 6.

[0315] Table 6

[0316] (iv) The seventh parameter δmsg2,b,f,c

[0317]

Example 11

[0318] In this embodiment, the value of the seventh parameter δmsg2,b,f,c is determined by the TPC command in the RAR message. Currently, only one TCP signaling word is configured in the RAR grant. Therefore, this application proposes the following method to obtain the value of the seventh parameter δmsg2,b,f,c.

[0319] Method 1: No new TCP command configuration is added; the number of TPC command configurations remains at 1. In this case, the values ​​of the seventh parameter δmsg2,b,f,c of the messages to be sent in types 3 and 4 can all be determined by the existing TPC command. That is, the existing TPC command can be used for MSG 3 repetition using different transmission symbols.

[0320] Method 2: No new TCP command configuration is added; the number of TPC commands remains at 1. In this case, the values ​​of the seventh parameter δmsg2,b,f,c for the fifth type of message to be sent are determined by the existing TPC command, and the values ​​of the seventh parameter δmsg2,b,f,c for the sixth type of message to be sent are determined by the uplink transmit power parameters of the previous message to be sent. The fifth type is the type of transmission symbol used by the first message to be sent, and the sixth type is a different type from the fifth type.

[0321] That is, the existing TPC command only adjusts the power of MSG 3 repetitions corresponding to the type of transmission symbol used by the first MSG 3 repetition. For example, if the transmission symbol used by the first MSG 3 repetition is Type 4 (SBFD), then this TPC command only adjusts all MSG 3 repetitions of Type 4. MSG 3 repetitions of Type 3 remain unchanged, or in other words, are the same as their predecessors.

[0322] Method 3: Add a new TCP command configuration, i.e., the number of TPC commands configured is 2. In this case, the parameter values ​​of the seventh parameter δmsg2,b,f,c of the third type of message to be sent are determined by one of the two configured TPC commands, and the parameter values ​​of the seventh parameter δmsg2,b,f,c of the fourth type of message to be sent are determined by the other of the two configured TPC commands.

[0323] That is, a new TPC command is configured within the RAR grant. This newly configured TPC command and the existing TPC command each correspond to an MSG3 repetition of a transmission symbol type. The configuration method can be: a bit in the FDRA field within the RAR grant.

[0324]

MSG A

[0325] As discussed in section 1.2, MSG A can be divided into two parts: the preamble portion, used to send the preamble to the network device via PRACH (equivalent to MSG 1 in 4-step RACH); and the payload portion, used to send the payload to the network device via PUSCH (e.g., the content of MSG 2 in 4-step RACH). In practice, both parts of the message are sent simultaneously, together forming MSG A. Therefore, the two parts of MSG A will be explained separately.

[0326] [The preamble in MSG A]

[0327] In this embodiment, when the message to be transmitted is the preamble portion of MSG A, the uplink transmit power parameters may include a first parameter, a second parameter, and a third parameter. The first parameter characterizes the power ramp-up step size during preamble transmission, the second parameter characterizes the number of power ramp-ups during preamble transmission, and the third parameter characterizes the initial power during random access. Referring to section 2.1, when the message to be transmitted is the preamble portion of MSG A, the first parameter is the power ramp-up step size `PREAMBLE_POWER_RAMPING_STEP`, the second parameter is the power ramp-up counter `PREAMBLE_POWER_RAMPING_COUNTER` during preamble retransmission, and the third parameter is the initial power of the random access preamble, `preambleReceivedTargetPower`.

[0328] (a) The first parameter PREAMBLE_POWER_RAMPING_STEP

[0329]

Example 12

[0330] In this embodiment, the value of the first parameter PREAMBLE_POWER_RAMPING_STEP can be determined by the RO type of the preamble portion in MSG A, as follows:

[0331] If the RO of the preamble portion in MSG A is of type 1 (legacy RO / non-SBFD RO), the value of the first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A1 in the first configuration. Parameter A1 is used to calculate the uplink transmit power of the preamble portion in MSG A; for example, parameter A1 could be parameter msgA-PreamblePowerRampingStep.

[0332] If the RO of the preamble portion in MSG A is of type two (additional RO / SBFD RO), the value of the first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A2 in the second configuration. Parameter A2 is the parameter for calculating the uplink transmit power of the preamble portion in MSG A in the new configuration. For example, parameter A2 can be the newly configured parameter msgA-PreamblePowerRampingStep1.

[0333]

Example 13

[0334] In this embodiment, the value of the first parameter PREAMBLE_POWER_RAMPING_STEP can also be determined by the RO type of the preamble portion in MSG A and the RO type of the previous message, as follows:

[0335] If the RO of the preamble portion in MSG A is of type 1 (legacy RO / non-SBFD RO), and the RO of the previous transmission of the preamble message in MSG A was also of type 1 (legacy RO / non-SBFD RO), then the value of the first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A1 in the first configuration. Parameter A1 is used to calculate the uplink transmit power of the preamble portion in MSG A; for example, parameter A1 could be parameter msgA-PreamblePowerRampingStep.

[0336] If the RO of the preamble portion in MSG A is of type 1 (legacy RO / non-SBFD RO), and the RO of the previous transmission of the preamble message in MSG A was of type 2 (additional RO / SBFD RO), the value of the first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A2 in the second configuration. Parameter A2 is the parameter for calculating the uplink transmit power of the preamble portion in MSG A in the new configuration. For example, parameter A2 could be the newly configured parameter msgA-PreamblePowerRampingStep1.

[0337] If the RO of the preamble portion in MSG A is type 2 (additional RO / SBFD RO), and the RO of the previous transmission of the preamble message in MSG A was type 1 (legacy RO / non-SBFD RO), the value of the first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A3 in the second configuration. Parameter A3 is the parameter for calculating the uplink transmit power of the preamble portion in MSG A in the new configuration. For example, parameter A3 could be the newly configured parameter msgA-PreamblePowerRampingStep2.

[0338] If the RO of the preamble portion in MSG A is of type two (additional RO / SBFD RO), and the RO of the previous transmission of the preamble message in MSG A was also of type two (additional RO / SBFD RO), then the value of the first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A4 in the second configuration. Parameter A4 is the parameter for calculating the uplink transmit power of the preamble portion in MSG A in the new configuration. For example, parameter A4 could be the newly configured parameter msgA-PreamblePowerRampingStep3.

[0339] The parameter that determines the value of the first parameter, PREAMBLE_POWER_RAMPING_STEP, can be selected from Table 7.

[0340] Table 7

[0341] For example, the ROs when the terminal device sends the preamble portion of MSG A multiple times are shown in Table 8:

[0342] Table 8

[0343] For RO No. 1, since it does not have a previous RO, it is a legacy RO and belongs to the first type. Therefore, the value of its corresponding first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A1 in the first configuration, namely the high-level parameter msgA-PreamblePowerRampingStep.

[0344] For RO No. 2, since its previous RO was a legacy RO of the first type, it is itself an additional RO of the second type. Therefore, the value of its corresponding first parameter PREAMBLE_POWER_RAMPING_STEP is determined by parameter A3 in the second configuration, such as the newly configured high-level parameter msgA-PreamblePowerRampingStep2.

[0345] (ii) The second parameter PREAMBLE_POWER_RAMPING_COUNTER

[0346] The method for determining the value of the second parameter PREMBLE_POWER_RAMPING_COUNTER is similar to the method for determining the value of the second parameter PREMBLE_POWER_RAMPING_COUNTER in

MSG 1

Example 3

Example 4

[0347] (iii) The third parameter, preambleReceivedTargetPower

[0348]

Example 14

[0349] In this embodiment, the value of the third parameter, preambleReceivedTargetPower, can be determined by the RO type of the preamble portion in MSG A, as follows:

[0350] If the RO of the preamble portion in MSG A is of type 1 (legacy RO / non-SBFD RO), the value of the third parameter, preambleReceivedTargetPower, is determined by parameter B1 in the first configuration. Parameter B1 is used to calculate the uplink transmit power of the preamble portion in MSG A. For example, parameter B1 can be the existing 2-step RACH random access preamble initial power msgA-PreambleReceivedTargetPower.

[0351] If the RO of the preamble portion in MSG A is of type two (additional RO / SBFD RO), the value of the third parameter, preambleReceivedTargetPower, is determined by parameter B2 in the second configuration. Parameter B2 is used to calculate the uplink transmit power of the preamble portion in MSG A. For example, parameter B2 could be the newly configured 2-step RACH random access preamble initial power msgA-PreambleReceivedTargetPower1.

[0352] [Payment portion in MSG A]

[0353] In this embodiment, when the message to be transmitted is the payload portion of MSGA, the uplink transmit power parameters may include an eighth parameter, a ninth parameter, and a tenth parameter. The eighth parameter characterizes the power during preamble transmission, the ninth parameter characterizes the power offset of the PUSCH in MSGA, and the tenth parameter characterizes the path loss compensation coefficient. Referring to section 2.2, when the message to be transmitted is the payload portion of MSGA, the eighth parameter is P... O_PRE The ninth parameter is Δ MsgA_PUSCH The tenth parameter is α b,f,c (0).

[0354] (I) Eighth parameter P O_PRE

[0355]

Example 15

[0356] In this embodiment, for the eighth parameter P O_PRE The parameter value can be determined by the RO type of the preamble part in MSG A, as follows:

[0357] If the RO of the preamble portion in MSG A is of type 1 (legacy RO / non-SBFD RO), then the eighth parameter P O_PRE The parameter value is determined by parameter F1 in the first configuration. Parameter F1 is used to calculate the uplink transmit power of the payload portion in MSG A. For example, parameter F1 can be the existing parameter msgA-preambleReceivedTargetPower. If parameter msgA-preambleReceivedTargetPower is not configured, it is determined by parameter C1 in the first configuration, i.e., the existing parameter preambleReceivedTargetPower.

[0358] If the RO of the preamble portion in MSG A is of type II (additional RO / SBFD RO), then the eighth parameter P O_PRE The parameter value is determined by parameter F2 in the second configuration. Parameter F2 is used to calculate the uplink transmit power of the payload portion in MSG A. For example, parameter F2 can be the newly configured parameter msgA-preambleReceivedTargetPower1. If parameter msgA-preambleReceivedTargetPower1 is not configured, it is determined by parameter C1 in the first configuration, i.e., the existing parameter preambleReceivedTargetPower.

[0359] (ii) Ninth parameter Δ MsgA_PUSCH

[0360]

Example 16

[0361] In this embodiment, for the ninth parameter Δ MsgA_PUSCH The parameter value can be determined by the type of transmission symbol used in the payload portion of MSG A, as follows:

[0362] If the payload portion of MSG A uses a transmission symbol type 3 (non-SBFD), the ninth parameter Δ MsgA_PUSCHThe parameter values ​​are determined by parameters G1 and H1 in the first configuration. Parameters G1 and H1 are used to calculate the uplink transmit power of the payload portion in MSG A; for example, parameter G1 could be parameter msgA-DeltaPreamble, and parameter H1 could be parameter deltaPreamble. If parameters msgA-DeltaPreamble and deltaPreamble are not configured, then the ninth parameter Δ... MsgA_PUSCH The parameter value is the third value. This third value is the default value for the ninth parameter as specified in the protocol when the relevant parameter is missing in the configuration. For example, the third value can be Δ. PREAMBLE,Msg3 dB.

[0363] If the payload portion of MSG A uses a transmission symbol type 4 (SBFD), the ninth parameter Δ MsgA_PUSCH The parameter G2 and parameter H2 in the second configuration are used to calculate the uplink transmit power of the payload portion in MSG A. For example, parameter G2 can be the newly configured parameter msgA-DeltaPreamble1, and parameter H2 can be the newly configured parameter deltaPreamble1. If parameter msgA-DeltaPreamble1 is not configured, then the ninth parameter Δ... MsgA_PUSCH The parameter value is determined by the parameters msgA-DeltaPreamble and deltaPreamble1. If the parameter deltaPreamble1 is not configured, then the ninth parameter Δ MsgA_PUSCH The parameter value is determined by the parameters msgA-DeltaPreamble1 and deltaPreamble. If neither msgA-DeltaPreamble1 nor deltaPreamble1 is configured, then the ninth parameter Δ MsgA_PUSCH The parameter value is determined by the parameters msgA-DeltaPreamble and deltaPreamble. If the parameters msgA-DeltaPreamble, deltaPreamble, msgA-DeltaPreamble1, and deltaPreamble1 are all not configured, then the ninth parameter Δ MsgA_PUSCH The parameter value is a third value, for example, Δ. PREAMBLE,Msg3 dB.

[0364]

Example 17

[0365] In this embodiment, the ninth parameter Δ MsgA_PUSCH The parameter values ​​can also be determined by the type of transmission symbols used in the payload portion of MSG A and the RO type of the preamble message in MSG A, as follows:

[0366] If the RO of the preamble message in MSG A is type 1 (legacy RO / non-SBFD RO), and the type of the transmission symbol used in the payload portion of MSG A is type 3 (non-SBFD), then the ninth parameter Δ MsgA_PUSCH The parameter values ​​are determined by parameters G1 and H1 in the first configuration. Parameters G1 and H1 are used to calculate the uplink transmit power of the payload portion in MSG A; for example, parameter G1 could be parameter msgA-DeltaPreamble, and parameter H1 could be parameter deltaPreamble. If parameters msgA-DeltaPreamble and deltaPreamble are not configured, then the ninth parameter Δ... MsgA_PUSCH The parameter value is the third value. This third value is the default value for the ninth parameter as specified in the protocol when the relevant parameter is missing in the configuration. For example, the third value can be Δ. PREAMBLE,Msg3 dB.

[0367] If the RO of the preamble message in MSG A is type 1 (legacy RO / non-SBFD RO), and the type of the transmission symbol used in the payload portion of MSG A is type 4 (SBFD), then the ninth parameter Δ MsgA_PUSCH The parameter values ​​are determined by parameters G2 and H2 in the second configuration. Parameters G2 and H2 are used to calculate the uplink transmit power of the payload portion in MSG A. For example, parameter G2 could be the newly configured parameter msgA-DeltaPreamble1, and parameter H2 could be the newly configured parameter deltaPreamble1. If parameter msgA-DeltaPreamble1 is not configured, then the ninth parameter Δ... MsgA_PUSCH The parameter value is determined by the parameters msgA-DeltaPreamble and deltaPreamble1. If the parameter deltaPreamble1 is not configured, then the ninth parameter Δ MsgA_PUSCH The parameter value is determined by the parameters msgA-DeltaPreamble1 and deltaPreamble. If neither msgA-DeltaPreamble1 nor deltaPreamble1 is configured, then the ninth parameter Δ MsgA_PUSCH The parameter value is determined by the parameters msgA-DeltaPreamble and deltaPreamble. If the parameters msgA-DeltaPreamble, deltaPreamble, msgA-DeltaPreamble1, and deltaPreamble1 are all not configured, then the ninth parameter Δ MsgA_PUSCHThe parameter value is a third value, for example, Δ. PREAMBLE,Msg3 dB.

[0368] If the RO of the preamble message in MSG A is type 2 (additional RO / SBFD RO), and the type of the transmission symbol used in the payload portion of MSG A is type 3 (non-SBFD), then the ninth parameter Δ MsgA_PUSCH The parameter values ​​are determined by parameters G3 and H3 in the second configuration. Parameters G3 and H3 are used to calculate the uplink transmit power of the payload portion in MSG A. For example, parameter G3 could be the newly configured parameter msgA-DeltaPreamble2, and parameter H3 could be the newly configured parameter deltaPreamble2. If parameter msgA-DeltaPreamble2 is not configured, then the ninth parameter Δ... MsgA_PUSCH The parameter value is determined by the parameters msgA-DeltaPreamble and deltaPreamble2. If the parameter deltaPreamble2 is not configured, then the ninth parameter Δ MsgA_PUSCH The parameter value is determined by the parameters msgA-DeltaPreamble2 and deltaPreamble. If neither msgA-DeltaPreamble2 nor deltaPreamble2 is configured, then the ninth parameter Δ MsgA_PUSCH The parameter value is determined by the parameters msgA-DeltaPreamble and deltaPreamble. If the parameters msgA-DeltaPreamble, deltaPreamble, msgA-DeltaPreamble2, and deltaPreamble2 are all not configured, then the ninth parameter Δ MsgA_PUSCH The parameter value is a third value, for example, Δ. PREAMBLE,Msg3 dB.

[0369] If the RO of the preamble message in MSG A is type 2 (additional RO / SBFD RO), and the type of the transmission symbol used in the payload portion of MSG A is type 4 (SBFD), then the ninth parameter Δ MsgA_PUSCH The parameter values ​​are determined by parameters G4 and H4 in the second configuration. Parameters G4 and H4 are used to calculate the uplink transmit power of the payload portion in MSG A. For example, parameter G4 could be the newly configured parameter msgA-DeltaPreamble3, and parameter H4 could be the newly configured parameter deltaPreamble3. If parameter msgA-DeltaPreamble3 is not configured, then the ninth parameter Δ... MsgA_PUSCHThe parameter value is determined by the parameters msgA-DeltaPreamble and deltaPreamble3. If the parameter deltaPreamble3 is not configured, then the ninth parameter Δ MsgA_PUSCH The parameter value is determined by the parameters msgA-DeltaPreamble3 and deltaPreamble. If neither msgA-DeltaPreamble3 nor deltaPreamble3 is configured, then the ninth parameter Δ MsgA_PUSCH The parameter value is determined by the parameters msgA-DeltaPreamble and deltaPreamble. If the parameters msgA-DeltaPreamble, deltaPreamble, msgA-DeltaPreamble3, and deltaPreamble3 are all not configured, then the ninth parameter Δ MsgA_PUSCH The parameter value is a third value, for example, Δ. PREAMBLE,Msg3 dB.

[0370] That is, determine the ninth parameter Δ MsgA_PUSCH The parameter values ​​can be selected from Table 9.

[0371] Table 9

[0372] (III) Tenth parameter α b,f,c (0)

[0373]

Example 18

[0374] In this embodiment, for the tenth parameter α b,f,c The parameter value of (0) can be determined by the type of transmission symbol used in the payload portion of MSG A, as follows:

[0375] If the payload portion of MSG A uses a transmission symbol type 3 (non-SBFD), the tenth parameter α b,f,c The parameter value of (0) is determined by parameter I1 in the first configuration. This parameter I1 is used to calculate the uplink transmit power of the payload portion in MSG A; for example, parameter I1 could be parameter msgA-Alpha. Alternatively, the tenth parameter α... b,f,c The parameter value of (0) is the fourth value, which is the default value of the tenth parameter specified in the protocol. For example, the fourth value can be 1.

[0376] If the payload portion of MSG A uses a type 4 (SBFD) transmission symbol, the tenth parameter α b,f,cThe parameter value of (0) is determined by parameter I2 in the second configuration. This parameter I2 is used to calculate the uplink transmit power of the payload portion in MSG A. For example, parameter I2 could be the newly configured parameter msgA-Alpha1. Alternatively, it could be the tenth parameter α. b,f,c The parameter value of (0) is the fourth value, such as 1.

[0377]

Example 19

[0378] In this embodiment, the tenth parameter α b,f,c The parameter value of (0) can also be determined by the type of transmission symbol used in the payload portion of MSG A and the RO type of the preamble message in MSG A, as follows:

[0379] If the RO of the preamble message in MSG A is type 1 (legacy RO / non-SBFD RO), and the type of the transmission symbol used in the payload portion of MSG A is type 3 (non-SBFD), then the tenth parameter α... b,f,c The parameter value of (0) is determined by parameter I1 in the first configuration. This parameter I1 is used to calculate the uplink transmit power of the payload portion in MSG A; for example, parameter I1 could be parameter msgA-Alpha. Alternatively, the tenth parameter α... b,f,c The parameter value of (0) is the fourth value, which is the default value of the tenth parameter specified in the protocol. For example, the fourth value can be 1.

[0380] If the RO of the preamble message in MSG A is type 1 (legacy RO / non-SBFD RO), and the type of the transmission symbol used in the payload portion of MSG A is type 4 (SBFD), then the tenth parameter α... b,f,c The parameter value of (0) is determined by parameter I2 in the second configuration. This parameter I2 is used to calculate the uplink transmit power of the payload portion in MSG A. For example, parameter I2 could be the newly configured parameter msgA-Alpha1. Alternatively, it could be the tenth parameter α. b,f,c The parameter value of (0) is the fourth value, such as 1.

[0381] If the RO of the preamble message in MSG A is type 2 (additional RO / SBFD RO), and the type of the transmission symbols used in the payload portion of MSG A is type 3 (non-SBFD), then the tenth parameter α... b,f,c The parameter value of (0) is determined by parameter I3 in the second configuration. Parameter I3 is used to calculate the uplink transmit power of the payload portion in MSG A. For example, parameter I3 could be the newly configured parameter msgA-Alpha2. Alternatively, the tenth parameter α...b,f,c The parameter value of (0) is the fourth value, such as 1.

[0382] If the RO of the preamble message in MSG A is type 2 (additional RO / SBFD RO), and the type of the transmission symbol used in the payload portion of MSG A is type 4 (SBFD), then the tenth parameter α... b,f,c The parameter value of (0) is determined by parameter I4 in the second configuration. Parameter I4 is used to calculate the uplink transmit power of the payload portion in MSG A. For example, parameter I4 could be the newly configured parameter msgA-Alpha3. Alternatively, the tenth parameter α... b,f,c The parameter value of (0) is the fourth value, such as 1.

[0383] That is, determine the tenth parameter α b,f,c The parameter values ​​for (0) can be selected from Table 10.

[0384] Table 10

[0385]

MSG 4HARQ-ACK

[0386] In this embodiment, when the message to be transmitted is MSG 4HARQ-ACK, the uplink transmit power parameters may include a first parameter and a second parameter. The first parameter characterizes the power ramp-up step size during preamble transmission, and the second parameter characterizes the number of power ramp-ups during preamble transmission. Referring to section 2.3, when the message to be transmitted is MSG 4HARQ-ACK, the first parameter is the power ramp-up step size PREAMBLE_POWER_RAMPING_STEP, and the second parameter is the power ramp-up counter PREAMBLE_POWER_RAMPING_COUNTER during preamble retransmission.

[0387] (a) The first parameter PREAMBLE_POWER_RAMPING_STEP

[0388] The method for determining the value of the first parameter PREMBLE_POWER_RAMPING_STEP is similar to the method for determining the first parameter PREMBLE_POWER_RAMPING_STEP in

MSG 1

Example 1

Example 2

[0389] (ii) The second parameter PREAMBLE_POWER_RAMPING_COUNTER

[0390] The method for determining the value of the second parameter PREMBLE_POWER_RAMPING_COUNTER is similar to the method for determining the value of the second parameter PREMBLE_POWER_RAMPING_COUNTER in

MSG 1

Example 3

Example 4

[0391] S702: Determine the uplink transmit power of the message to be sent based on the parameter value of the uplink transmit power parameter.

[0392] In this embodiment, after obtaining the uplink transmit power parameters of the message to be sent, these parameters can be substituted into the uplink transmit power calculation formula corresponding to the message to be sent to calculate the uplink transmit power of the message to be sent. The uplink transmit power calculation formula can be the calculation formula provided in 2.1-2.3, or it can be other power calculation formulas, and this application does not limit it.

[0393] Therefore, this application provides a method for defining the uplink transmit power of messages sent by a terminal device to a network device during the RA process after introducing SBFD. The uplink transmit power obtained by this embodiment can determine the minimum uplink transmit power while ensuring the receiving performance of the base station, thereby minimizing interference to the base station.

[0394] The above primarily describes the implementation scheme of this application from a methodological perspective. It is understood that, in order to achieve the above functions, the terminal device includes corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, based on the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware 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 application.

[0395] The embodiments of this application can divide the terminal device into functional units according to the above method examples. For example, each function can be divided into a separate functional unit, or two or more functions can be integrated into one processing unit. The integrated unit can be implemented in hardware or as a software program module. It should be noted that the unit division in the embodiments of this application is illustrative and is only a logical functional division, while other division methods may be used in actual implementation.

[0396] In the case of using integrated units, FIG9 is a functional unit block diagram of an uplink transmit power determination device in random access according to an embodiment of this application. The uplink transmit power determination device 900 includes an acquisition unit 901 and a determination unit 902.

[0397] In this embodiment, the acquisition unit 901 and the determination unit 902 can be a module unit used to receive and process signals, information, etc., or to determine a monitoring mechanism, and there are no specific limitations on this.

[0398] In this embodiment, the uplink transmission power determination device 900 may further include a storage unit for computer program code or instructions executed by the uplink transmission power determination device 900. The storage unit may be a memory.

[0399] In this embodiment, the uplink transmission power determining device 900 can be a chip or a chip module.

[0400] In this embodiment, the acquisition unit 901 and the determination unit 902 can be integrated into the communication unit. The communication unit can be a communication interface, transceiver, transceiver circuit, etc.

[0401] In this embodiment, the acquisition unit 901 and the determination unit 902 can be integrated into the processing unit.

[0402] It should be noted that the processing unit can be a processor or controller, such as a baseband processor, baseband chip, central processing unit (CPU), general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processing unit can also be a combination that implements computational functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0403] In this embodiment, the uplink transmission power determination device 900 is used to perform any of the steps performed by the terminal device / chip / chip module, etc., as described in the above method embodiment.

[0404] In specific implementation, the acquisition unit 901 and the determination unit 902 are used to perform any step as described in the above method implementation, and when performing actions such as sending, other units can be selectively invoked to complete the corresponding operation. A detailed explanation follows.

[0405] The acquisition unit 901 is used to determine the parameter value of the uplink transmit power parameter based on the basic information of the message to be sent.

[0406] In this embodiment, the message to be sent is a message sent by the terminal device to the base station during random access in the sub-band full-duplex system.

[0407] The determining unit 902 is used to determine the uplink transmission power of the message to be sent based on the parameter value of the uplink transmission power parameter.

[0408] In this embodiment, the message to be sent includes at least one of the following: a mixed automatic retransmission request acknowledgment of message 1, message 3, message A and message 4.

[0409] In this embodiment, the basic information includes at least one of the following:

[0410] The type of random access timing for the message to be sent, the type of random access timing when the terminal device previously sent a message, and the type of transmission symbol used in the message to be sent;

[0411] The types of random access opportunities include a first type and a second type;

[0412] The first type refers to the random access opportunity being in a non-subband full-duplex symbol, or the random access opportunity being in an uplink symbol or flexible symbol configured by higher-layer signaling, or the random access opportunity being in a random access channel that does not contain subband full-duplex symbols.

[0413] The second type refers to the random access opportunity being within a subband full-duplex symbol, or the random access opportunity being within an uplink symbol subband configured by higher-layer signaling, or the random access opportunity being within a random access channel containing a subband full-duplex symbol.

[0414] The types of transmission symbols used in the message to be sent include the third type and the fourth type;

[0415] The third type refers to the message to be sent being transmitted using non-subband full-duplex symbols;

[0416] The fourth type refers to the message to be sent being transmitted using subband full-duplex symbols.

[0417] In this embodiment, if the message to be sent is the preamble portion of message 1, message A, or the hybrid automatic repeat request confirmation of message 4, then the uplink transmit power parameter includes at least one of the following: a first parameter and a second parameter;

[0418] The parameter values ​​of the first parameter and the second parameter are related to the type of random access timing of the message to be sent;

[0419] The first parameter is used to characterize the power ramp-up step size during preamble transmission.

[0420] The second parameter is used to characterize the number of power ramps during the preamble transmission.

[0421] In this embodiment, if the random access timing of the message to be sent is of the first type, then the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A1 in the first configuration.

[0422] If the random access timing of the message to be sent is of the second type, then the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A2 in the second configuration.

[0423] The parameters A1 and A2 are used to calculate the uplink transmit power of the preamble portion of message 1, message A, or the hybrid automatic repeat request acknowledgment of message 4.

[0424] In this embodiment, the parameter values ​​of the first parameter and the second parameter are also related to the type of random access timing when the terminal device previously sent a message.

[0425] In this embodiment, if the random access timing of the message to be sent is of the first type, and the random access timing of the terminal device when it sent the message last time was of the first type, the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A1 in the first configuration.

[0426] If the random access timing of the message to be sent is of the first type, and the random access timing of the terminal device when it sent the message last time is of the second type, the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A2 in the second configuration.

[0427] If the random access timing of the message to be sent is of the second type, and the random access timing of the terminal device when it sent the message last time was of the first type, the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A3 in the second configuration.

[0428] If the random access timing of the message to be sent is of the second type, and the random access timing of the terminal device when it sent the message last time was of the second type, the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A4 in the second configuration.

[0429] The parameters A1, A2, A3, and A4 are used to calculate the uplink transmit power of the preamble portion of message 1, message A, or the hybrid automatic repeat request acknowledgment of message 4.

[0430] In this embodiment, if the message to be sent is the preamble portion of message 1 or message A, the uplink transmit power parameter further includes a third parameter;

[0431] The value of the third parameter is related to the type of random access timing of the message to be sent;

[0432] The third parameter is used to characterize the initial power during random access.

[0433] In this embodiment, if the random access timing of the message to be sent is of the first type, then the parameter value of the third parameter is determined by parameter B1 in the first configuration.

[0434] If the random access timing of the message to be sent is of the second type, then the parameter value of the third parameter is determined by parameter B2 in the second configuration;

[0435] Parameters B1 and B2 are used to calculate the uplink transmit power of the preamble portion in message 1 or message A.

[0436] In this embodiment, when the message to be sent is message 3, the uplink transmit power parameter includes at least one of the following:

[0437] The fourth, fifth, sixth, and seventh parameters;

[0438] The fourth parameter is used to characterize the power during preamble transmission;

[0439] The fifth parameter is used to characterize the power bias of message 3 relative to message 1;

[0440] The sixth parameter is used to characterize the road loss compensation coefficient;

[0441] The seventh parameter is used to characterize the power control adjustment of the transmit power command.

[0442] In this embodiment, if the uplink transmit power parameter is the fourth parameter, the parameter value of the fourth parameter is related to the type of random access timing of the message to be sent.

[0443] In this embodiment, if the random access timing of the message to be sent is of the first type, then the parameter value of the fourth parameter is determined by parameter C1 in the first configuration.

[0444] If the random access timing of the message to be sent is of the second type, then the parameter value of the fourth parameter is determined by parameter C2 in the second configuration;

[0445] Among them, the parameters C1 and C2 are used to calculate the uplink transmission power of message 3.

[0446] In this embodiment, if the uplink transmit power parameter is the fifth parameter, the value of the fifth parameter is related to the type of transmission symbol used in the message to be sent.

[0447] In this embodiment, if the type of the transmission symbol used in the message to be sent is the third type, then the parameter value of the fifth parameter is determined by parameter D1 in the first configuration; if parameter D1 does not exist, then the parameter value of the fifth parameter is the first value.

[0448] If the type of transmission symbol used in the message to be sent is the fourth type, then the parameter value of the fifth parameter is determined by parameter D2 in the second configuration; if parameter D2 does not exist, then the parameter value of the fifth parameter is determined by parameter D1; if neither parameter D2 nor parameter D1 exists, then the parameter value of the fifth parameter is the first value.

[0449] Among them, the parameters D1 and D2 are used to calculate the uplink transmission power of message 3.

[0450] In this embodiment, if the uplink transmit power parameter is the fifth parameter, the parameter value of the fifth parameter is related to the type of random access timing of the message to be sent and the type of transmission symbol used by the message to be sent.

[0451] In this embodiment, if the random access timing type of the message to be sent is the first type and the transmission symbol type used by the message to be sent is the third type, then the parameter value of the fifth parameter is determined by parameter D1 in the first configuration; if parameter D1 does not exist, then the parameter value of the fifth parameter is the first value.

[0452] If the random access timing type of the message to be sent is the first type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the fifth parameter is determined by parameter D2 in the second configuration. If parameter D2 does not exist, then the parameter value of the fifth parameter is determined by parameter D1. If both parameter D2 and parameter D1 do not exist, then the parameter value of the fifth parameter is the first value.

[0453] If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the third type, then the parameter value of the fifth parameter is determined by parameter D3 in the second configuration. If parameter D3 does not exist, then the parameter value of the fifth parameter is determined by parameter D1. If both parameter D3 and parameter D1 do not exist, then the parameter value of the fifth parameter is the first value.

[0454] If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the fifth parameter is determined by parameter D4 in the second configuration. If parameter D4 does not exist, then the parameter value of the fifth parameter is determined by parameter D1. If neither parameter D4 nor parameter D1 exists, then the parameter value of the fifth parameter is the first value.

[0455] Among them, the parameters D1, D2, D3 and D4 are used to calculate the uplink transmission power of message 3.

[0456] In this embodiment, if the uplink transmit power parameter is the sixth parameter, the parameter value of the sixth parameter is related to the type of transmission symbol used in the message to be sent.

[0457] In this embodiment, if the type of the transmission symbol used in the message to be sent is the third type, then the parameter value of the sixth parameter is determined by parameter E1 in the first configuration, or the parameter value of the sixth parameter is the second value.

[0458] If the type of the transmission symbol used in the message to be sent is the fourth type, then the parameter value of the sixth parameter is determined by parameter E2 in the second configuration, or the parameter value of the sixth parameter is the second value;

[0459] Among them, the parameters E1 and E2 are used to calculate the uplink transmission power of message 3.

[0460] In this embodiment, if the uplink transmit power parameter is the sixth parameter, the parameter value of the sixth parameter is related to the type of random access timing of the message to be sent and the type of transmission symbol used by the message to be sent.

[0461] In this embodiment, if the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the sixth parameter is determined by parameter E1 in the first configuration, or the parameter value of the sixth parameter is the second value.

[0462] If the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the fourth type, then the parameter value of the sixth parameter is determined by parameter E2 in the second configuration, or the parameter value of the sixth parameter is the second value.

[0463] If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the third type, then the parameter value of the sixth parameter is determined by parameter E3 in the second configuration, or the parameter value of the sixth parameter is the second value;

[0464] If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the sixth parameter is determined by parameter E4 in the second configuration, or the parameter value of the sixth parameter is the second value;

[0465] Among them, the parameters E1, E2, E3 and E4 are used to calculate the uplink transmission power of message 3.

[0466] In this embodiment, if the uplink transmit power parameter is the seventh parameter, the value of the seventh parameter is related to the type of transmission symbol used in the message to be sent and the number of transmit power commands configured.

[0467] In this embodiment, if the configuration quantity of the transmit power command is 1, then the parameter value of the seventh parameter of the message to be sent of the third type and the fourth type is determined by the transmit power command.

[0468] Alternatively, the parameter value of the seventh parameter of the fifth type of message to be transmitted is determined by the transmit power command, and the parameter value of the seventh parameter of the sixth type of message to be transmitted is determined by the parameter value of the seventh parameter of the previous message to be transmitted, wherein the fifth type is the type of transmission symbol used by the first message to be transmitted, and the sixth type is a type different from the fifth type.

[0469] In this embodiment, if the number of configured transmit power commands is 2, the parameter value of the seventh parameter of the third type of message to be sent is determined by one of the two configured transmit power commands, and the parameter value of the seventh parameter of the fourth type of message to be sent is determined by the other of the two configured transmit power commands.

[0470] In this embodiment, when the message to be sent is the payload portion of message A, the uplink transmit power parameter includes at least one of the following:

[0471] The eighth, ninth, and tenth parameters;

[0472] The eighth parameter is used to characterize the power during preamble transmission;

[0473] The ninth parameter is used to characterize the power offset of the physical uplink shared channel of message A;

[0474] The tenth parameter is used to characterize the road loss compensation coefficient.

[0475] In this embodiment, if the uplink transmit power parameter is the eighth parameter, the parameter value of the eighth parameter is related to the type of random access timing of the message to be sent.

[0476] In this embodiment, if the random access timing of the message to be sent is of the first type, the parameter value of the eighth parameter is determined by parameter F1 in the first configuration; if parameter F1 does not exist, the parameter value of the eighth parameter is determined by parameter C1 in the first configuration.

[0477] If the random access timing of the message to be sent is of the second type, then the parameter value of the eighth parameter is determined by parameter F2 in the second configuration; if parameter F2 does not exist, then the parameter value of the eighth parameter is determined by parameter C1 in the first configuration.

[0478] The parameters F1 and F2 are used to calculate the uplink transmit power of the payload portion in message A, and the parameter C1 is used to calculate the uplink transmit power of message 3.

[0479] In this embodiment, if the uplink transmit power parameter is the ninth parameter, the parameter value of the ninth parameter is related to the type of transmission symbol used in the message to be sent.

[0480] In this embodiment, if the type of the transmission symbol used in the message to be sent is the third type, the parameter value of the ninth parameter is determined by the parameters G1 and H1 in the first configuration; if the parameters G1 and / or H1 do not exist, the parameter value of the ninth parameter is the third value.

[0481] If the type of the transmission symbol used in the message to be sent is the fourth type, then the parameter value of the ninth parameter is determined by parameters G2 and H2 in the second configuration. If parameter G2 does not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H2. If parameter H2 does not exist, then the parameter value of the ninth parameter is determined by parameters G2 and H1. If parameters G2 and H2 do not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H1. If parameters G1, H1, G2, and H2 do not exist, then the parameter value of the ninth parameter is the third value.

[0482] The parameters G1, H1, G2, and H2 are used to calculate the uplink transmit power of the payload portion in message A.

[0483] In this embodiment, if the uplink transmit power parameter is the ninth parameter, the parameter value of the ninth parameter is related to the type of random access timing of the message to be sent and the type of transmission symbol used by the message to be sent.

[0484] In this embodiment, if the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the ninth parameter is determined by the parameter G1 and parameter H1 in the first configuration. If the parameter G1 and / or the parameter H1 does not exist, then the parameter value of the ninth parameter is the third value.

[0485] If the random access timing type of the message to be sent is the first type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the ninth parameter is determined by parameters G2 and H2 in the second configuration. If parameter G2 does not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H2. If parameter H2 does not exist, then the parameter value of the ninth parameter is determined by parameters G2 and H1. If parameters G2 and H2 do not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H1. If parameters G1, H1, G2, and H2 do not exist, then the parameter value of the ninth parameter is the third value.

[0486] If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the third type, then the parameter value of the ninth parameter is determined by parameters G3 and H3 in the second configuration. If parameter G3 does not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H3. If parameter H3 does not exist, then the parameter value of the ninth parameter is determined by parameters G3 and H1. If parameters G3 and H3 do not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H1. If parameters G1, H1, G3, and H3 do not exist, then the parameter value of the ninth parameter is the third value.

[0487] If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the ninth parameter is determined by parameters G4 and H4 in the second configuration. If parameter G4 does not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H4. If parameter H4 does not exist, then the parameter value of the ninth parameter is determined by parameters G4 and H1. If parameters G4 and H4 do not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H1. If parameters G1, H1, G4, and H4 do not exist, then the parameter value of the ninth parameter is the third value.

[0488] The parameters G1, H1, G2, H2, G3, H3, G4, and H4 are used to calculate the uplink transmit power of the payload portion in message A.

[0489] In this embodiment, if the uplink transmit power parameter is the tenth parameter, the parameter value of the tenth parameter is related to the type of transmission symbol used in the message to be sent.

[0490] In this embodiment, if the type of the transmission symbol used in the message to be sent is the third type, then the parameter value of the tenth parameter is determined by parameter I1 in the first configuration, or the parameter value of the tenth parameter is the fourth value.

[0491] If the type of the transmission symbol used in the message to be sent is the fourth type, then the parameter value of the tenth parameter is determined by parameter I2 in the second configuration, or the parameter value of the tenth parameter is the fourth value;

[0492] The parameters I1 and I2 are used to calculate the uplink transmit power of the payload portion in message A.

[0493] In this embodiment, if the uplink transmit power parameter is the tenth parameter, the parameter value of the tenth parameter is related to the type of random access timing of the message to be sent and the type of transmission symbol used by the message to be sent.

[0494] In this embodiment, if the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the tenth parameter is determined by parameter I1 in the first configuration, or the parameter value of the tenth parameter is the fourth value.

[0495] If the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the fourth type, then the parameter value of the tenth parameter is determined by parameter I2 in the second configuration, or the parameter value of the tenth parameter is the fourth value.

[0496] If the random access timing of the message to be sent is of the second type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the tenth parameter is determined by parameter I3 in the second configuration, or the parameter value of the tenth parameter is the fourth value.

[0497] If the random access timing of the message to be sent is of the second type and the transmission symbol used by the message to be sent is of the fourth type, then the parameter value of the tenth parameter is determined by parameter I4 in the second configuration, or the parameter value of the tenth parameter is the fourth value.

[0498] Among them, the parameters I1, I2, I3 and I4 are used to calculate the uplink transmit power of the payload portion in message A.

[0499] It should be noted that the specific implementation of each operation in the embodiment shown in Figure 9 can be found in the description of the method embodiment shown above, and will not be repeated here.

[0500] Referring to Figure 10, which is a schematic diagram of the structure of a terminal device according to an embodiment of this application, the terminal device 1000 may include a processor 1010, a memory 1020, and a communication bus for connecting the processor 1010 and the memory 1020.

[0501] Optionally, the memory 1020 may include, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or compact disc read-only memory (CD-ROM). The memory 1020 is used to store program code executed by the terminal device 1000 and data transmitted.

[0502] In this embodiment, the terminal device 1000 also includes a communication interface for receiving and sending data.

[0503] In this embodiment, the terminal device 1000 can be the first terminal device described above.

[0504] In this embodiment, the processor 1010 may be one or more CPUs. When the processor 1010 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

[0505] In this embodiment, the processor 1010 can be a baseband chip, a chip, a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof.

[0506] In specific implementation, the processor 1010 in the terminal device 1000 executes the computer program or instructions 1021 stored in the memory 1020 to perform the following operations:

[0507] The uplink transmit power parameter value is determined based on the basic information of the message to be sent.

[0508] In this embodiment, the message to be sent is a message sent by the terminal device to the base station during random access in the sub-band full-duplex system.

[0509] The uplink transmission power of the message to be sent is determined based on the parameter value of the uplink transmission power parameter.

[0510] It should be noted that the specific implementation of each operation in the embodiment shown in Figure 10 can be found in the description of the method embodiment shown above, and will not be repeated here.

[0511] In this embodiment, the above-described method implementation can be applied to a terminal device. That is, the executing entity of the above-described method implementation can be a terminal device, a chip, a chip module, or a module, etc., without specific limitations.

[0512] In this embodiment, the above-described method can be applied to network devices. That is, the entity executing the above-described method can be a network device, a chip, a chip module, or a module, etc., without specific limitations.

[0513] This application also provides a chip, including a processor, a memory, and a computer program or instructions stored in the memory, wherein the processor executes the computer program or instructions to implement the steps described in the above method embodiments.

[0514] This application also provides a chip module, including a transceiver component and a chip. The chip includes a processor, a memory, and a computer program or instructions stored in the memory, wherein the processor executes the computer program or instructions to implement the steps described in the above method embodiments.

[0515] This application also provides a computer-readable storage medium storing a computer program or instructions that, when executed, implement the steps described in the above-described method embodiments.

[0516] This application also provides a computer program product, including a computer program or instructions that, when executed, implement the steps described in the above method embodiments.

[0517] This application also provides a communication system, including the terminal device and the network device described above.

[0518] It should be noted that, for the sake of simplicity, the various embodiments described above are all presented as a series of actions. Those skilled in the art should understand that this application is not limited by the described order of actions, as some steps in the embodiments of this application can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions, steps, modules, or units involved are not necessarily essential to the embodiments of this application.

[0519] In the above embodiments, the descriptions of each embodiment in this application have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0520] The steps of the methods or algorithms described in this application can be implemented in hardware or by a processor executing software instructions. The software instructions can consist of corresponding software modules, which can be stored in RAM, flash memory, ROM, EPROM, electrically erasable programmable read-only memory (EEPROM), registers, hard disk, portable hard disk, read-only optical disk (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. Furthermore, the ASIC can reside in a terminal device or management device. Alternatively, the processor and storage medium can exist as discrete components in the terminal device or management device.

[0521] Those skilled in the art will recognize that, in one or more of the examples above, the functions described in the embodiments of this application can be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. This computer program product includes one or more computer instructions. When these computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0522] The modules / units included in the various devices and products described in the above embodiments can be software modules / units, hardware modules / units, or a combination of both. For example, for devices and products applied to or integrated into a chip, all modules / units can be implemented using hardware methods such as circuits, or at least some modules / units can be implemented using software programs that run on a processor integrated within the chip, while the remaining (if any) modules / units can be implemented using hardware methods such as circuits. For devices and products applied to or integrated into a chip module, all modules / units can be implemented using hardware methods such as circuits. Different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or different components of the chip module, or at least some modules / units can be implemented using hardware methods such as circuits. The implementation is achieved through a software program that runs on a processor integrated within the chip module. The remaining modules / units (if any) can be implemented using hardware methods such as circuits. For various devices and products applied to or integrated into terminal equipment, each of their modules / units can be implemented using hardware methods such as circuits. Different modules / units can be located in the same component (e.g., chip, circuit module, etc.) or different components within the terminal equipment. Alternatively, at least some modules / units can be implemented using a software program that runs on a processor integrated within the terminal equipment, while the remaining modules / units (if any) can be implemented using hardware methods such as circuits.

[0523] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above description is only a specific embodiment of the embodiments of this application and is not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A method for determining uplink transmit power in random access, characterized in that, The method includes: The uplink transmit power parameter value is determined based on the basic information of the message to be sent. The message to be sent is a message sent by the terminal device to the base station during random access in the sub-band full-duplex system. The uplink transmission power of the message to be sent is determined based on the parameter value of the uplink transmission power parameter.

2. The method according to claim 1, characterized in that, The message to be sent includes at least one of the following: a mixed automatic retransmission request acknowledgment of message 1, message 3, message A and message 4.

3. The method according to claim 2, characterized in that: The basic information includes at least one of the following: The type of random access timing for the message to be sent, the type of random access timing when the terminal device previously sent a message, and the type of transmission symbol used in the message to be sent; The types of random access opportunities include a first type and a second type; The first type refers to the random access opportunity being in a non-subband full-duplex symbol, or the random access opportunity being in an uplink symbol or flexible symbol configured by higher-layer signaling, or the random access opportunity being in a random access channel that does not contain subband full-duplex symbols. The second type refers to the random access opportunity being within a subband full-duplex symbol, or the random access opportunity being within an uplink symbol subband configured by higher-layer signaling, or the random access opportunity being within a random access channel containing a subband full-duplex symbol. The types of transmission symbols used in the message to be sent include the third type and the fourth type; The third type refers to the message to be sent being transmitted using non-subband full-duplex symbols; The fourth type refers to the message to be sent being transmitted using subband full-duplex symbols.

4. The method according to claim 3, characterized in that, If the message to be sent is the preamble portion of message 1, message A, or the hybrid automatic repeat request confirmation of message 4, then the uplink transmit power parameter includes at least one of the following: a first parameter and a second parameter; The parameter values ​​of the first parameter and the second parameter are related to the type of random access timing of the message to be sent; The first parameter is used to characterize the power ramp-up step size during preamble transmission. The second parameter is used to characterize the number of power ramps during the preamble transmission.

5. The method according to claim 4, characterized in that, If the random access timing of the message to be sent is of the first type, then the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A1 in the first configuration; If the random access timing of the message to be sent is of the second type, then the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A2 in the second configuration. The parameters A1 and A2 are used to calculate the uplink transmit power of the preamble portion of message 1, message A, or the hybrid automatic repeat request acknowledgment of message 4.

6. The method according to claim 4, characterized in that, The parameter values ​​of the first parameter and the second parameter are also related to the type of random access timing when the terminal device previously sent a message.

7. The method according to claim 6, characterized in that, If the random access timing of the message to be sent is of the first type, and the random access timing of the terminal device when it sent the message last time was of the first type, the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A1 in the first configuration. If the random access timing of the message to be sent is of the first type, and the random access timing of the terminal device when it sent the message last time is of the second type, the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A2 in the second configuration. If the random access timing of the message to be sent is of the second type, and the random access timing of the terminal device when it sent the message last time was of the first type, the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A3 in the second configuration. If the random access timing of the message to be sent is of the second type, and the random access timing of the terminal device when it sent the message last time was of the second type, the parameter value of the first parameter or the parameter value of the second parameter is determined by parameter A4 in the second configuration. The parameters A1, A2, A3, and A4 are used to calculate the uplink transmit power of the preamble portion of message 1, message A, or the hybrid automatic repeat request acknowledgment of message 4.

8. The method according to any one of claims 4-7, characterized in that, If the message to be sent is the preamble portion of message 1 or message A, then the uplink transmit power parameter also includes a third parameter; The value of the third parameter is related to the type of random access timing of the message to be sent; The third parameter is used to characterize the initial power during random access.

9. The method according to claim 8, characterized in that, If the random access timing of the message to be sent is of the first type, then the parameter value of the third parameter is determined by parameter B1 in the first configuration; If the random access timing of the message to be sent is of the second type, then the parameter value of the third parameter is determined by parameter B2 in the second configuration; Parameters B1 and B2 are used to calculate the uplink transmit power of the preamble portion in message 1 or message A.

10. The method according to any one of claims 3-9, characterized in that, When the message to be sent is message 3, the uplink transmit power parameter includes at least one of the following: The fourth, fifth, sixth, and seventh parameters; The fourth parameter is used to characterize the power during preamble transmission; The fifth parameter is used to characterize the power bias of message 3 relative to message 1; The sixth parameter is used to characterize the road loss compensation coefficient; The seventh parameter is used to characterize the power control adjustment of the transmit power command.

11. The method according to claim 10, characterized in that, If the uplink transmit power parameter is the fourth parameter, the value of the fourth parameter is related to the type of random access timing of the message to be sent.

12. The method according to claim 11, characterized in that, If the random access timing of the message to be sent is of the first type, then the parameter value of the fourth parameter is determined by parameter C1 in the first configuration; If the random access timing of the message to be sent is of the second type, then the parameter value of the fourth parameter is determined by parameter C2 in the second configuration; Among them, the parameters C1 and C2 are used to calculate the uplink transmission power of message 3.

13. The method according to any one of claims 10-12, characterized in that, If the uplink transmit power parameter is the fifth parameter, the value of the fifth parameter is related to the type of transmission symbol used in the message to be sent.

14. The method according to claim 13, characterized in that, If the type of transmission symbol used in the message to be sent is the third type, then the parameter value of the fifth parameter is determined by parameter D1 in the first configuration; if parameter D1 does not exist, then the parameter value of the fifth parameter is the first value. If the type of transmission symbol used in the message to be sent is the fourth type, then the parameter value of the fifth parameter is determined by parameter D2 in the second configuration; if parameter D2 does not exist, then the parameter value of the fifth parameter is determined by parameter D1; if neither parameter D2 nor parameter D1 exists, then the parameter value of the fifth parameter is the first value. Among them, the parameters D1 and D2 are used to calculate the uplink transmission power of message 3.

15. The method according to any one of claims 10-12, characterized in that, If the uplink transmit power parameter is the fifth parameter, the value of the fifth parameter is related to the type of random access timing of the message to be sent and the type of transmission symbol used by the message to be sent.

16. The method according to claim 15, characterized in that, If the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the fifth parameter is determined by parameter D1 in the first configuration. If parameter D1 does not exist, then the parameter value of the fifth parameter is the first value. If the random access timing type of the message to be sent is the first type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the fifth parameter is determined by parameter D2 in the second configuration. If parameter D2 does not exist, then the parameter value of the fifth parameter is determined by parameter D1. If both parameter D2 and parameter D1 do not exist, then the parameter value of the fifth parameter is the first value. If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the third type, then the parameter value of the fifth parameter is determined by parameter D3 in the second configuration. If parameter D3 does not exist, then the parameter value of the fifth parameter is determined by parameter D1. If both parameter D3 and parameter D1 do not exist, then the parameter value of the fifth parameter is the first value. If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the fifth parameter is determined by parameter D4 in the second configuration. If parameter D4 does not exist, then the parameter value of the fifth parameter is determined by parameter D1. If neither parameter D4 nor parameter D1 exists, then the parameter value of the fifth parameter is the first value. Among them, the parameters D1, D2, D3 and D4 are used to calculate the uplink transmission power of message 3.

17. The method according to any one of claims 10-16, characterized in that, If the uplink transmit power parameter is the sixth parameter, the value of the sixth parameter is related to the type of transmission symbol used in the message to be sent.

18. The method according to claim 17, characterized in that, If the type of the transmission symbol used in the message to be sent is the third type, then the parameter value of the sixth parameter is determined by parameter E1 in the first configuration, or the parameter value of the sixth parameter is the second value; If the type of the transmission symbol used in the message to be sent is the fourth type, then the parameter value of the sixth parameter is determined by parameter E2 in the second configuration, or the parameter value of the sixth parameter is the second value; Among them, the parameters E1 and E2 are used to calculate the uplink transmission power of message 3.

19. The method according to any one of claims 10-16, characterized in that, If the uplink transmit power parameter is the sixth parameter, the value of the sixth parameter is related to the type of random access timing of the message to be sent and the type of transmission symbol used by the message to be sent.

20. The method according to claim 19, characterized in that, If the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the sixth parameter is determined by parameter E1 in the first configuration, or the parameter value of the sixth parameter is the second value. If the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the fourth type, then the parameter value of the sixth parameter is determined by parameter E2 in the second configuration, or the parameter value of the sixth parameter is the second value. If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the third type, then the parameter value of the sixth parameter is determined by parameter E3 in the second configuration, or the parameter value of the sixth parameter is the second value; If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the sixth parameter is determined by parameter E4 in the second configuration, or the parameter value of the sixth parameter is the second value; Among them, the parameters E1, E2, E3 and E4 are used to calculate the uplink transmission power of message 3.

21. The method according to any one of claims 10-20, characterized in that, If the uplink transmit power parameter is the seventh parameter, the value of the seventh parameter is related to the type of transmission symbol used in the message to be sent and the number of transmit power commands configured.

22. The method according to claim 21, characterized in that, If the configuration quantity of the transmit power command is 1, then the parameter value of the seventh parameter of the message to be sent of the third type and the fourth type is determined by the transmit power command. Alternatively, the parameter value of the seventh parameter of the fifth type of message to be transmitted is determined by the transmit power command, and the parameter value of the seventh parameter of the sixth type of message to be transmitted is determined by the parameter value of the seventh parameter of the previous message to be transmitted, wherein the fifth type is the type of transmission symbol used by the first message to be transmitted, and the sixth type is a type different from the fifth type.

23. The method according to claim 21 or 22, characterized in that, If the number of transmission power commands configured is 2, then the parameter value of the seventh parameter of the third type of message to be sent is determined by one of the two configured transmission power commands, and the parameter value of the seventh parameter of the fourth type of message to be sent is determined by the other of the two configured transmission power commands.

24. The method according to any one of claims 3-23, characterized in that, When the message to be sent is the payload portion of message A, the uplink transmit power parameter includes at least one of the following: The eighth, ninth, and tenth parameters; The eighth parameter is used to characterize the power during preamble transmission; The ninth parameter is used to characterize the power offset of the physical uplink shared channel of message A; The tenth parameter is used to characterize the road loss compensation coefficient.

25. The method according to claim 24, characterized in that, If the uplink transmit power parameter is the eighth parameter, the value of the eighth parameter is related to the type of random access timing of the message to be sent.

26. The method according to claim 25, characterized in that, If the random access timing of the message to be sent is of the first type, then the parameter value of the eighth parameter is determined by parameter F1 in the first configuration; if parameter F1 does not exist, then the parameter value of the eighth parameter is determined by parameter C1 in the first configuration. If the random access timing of the message to be sent is of the second type, then the parameter value of the eighth parameter is determined by parameter F2 in the second configuration; if parameter F2 does not exist, then the parameter value of the eighth parameter is determined by parameter C1 in the first configuration. The parameters F1 and F2 are used to calculate the uplink transmit power of the payload portion in message A, and the parameter C1 is used to calculate the uplink transmit power of message 3.

27. The method according to any one of claims 24-26, characterized in that, If the uplink transmit power parameter is the ninth parameter, the value of the ninth parameter is related to the type of transmission symbol used in the message to be sent.

28. The method according to claim 27, characterized in that, If the type of the transmission symbol used in the message to be sent is the third type, then the parameter value of the ninth parameter is determined by the parameters G1 and H1 in the first configuration. If the parameters G1 and / or H1 do not exist, then the parameter value of the ninth parameter is the third value. If the type of the transmission symbol used in the message to be sent is the fourth type, then the parameter value of the ninth parameter is determined by parameters G2 and H2 in the second configuration. If parameter G2 does not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H2. If parameter H2 does not exist, then the parameter value of the ninth parameter is determined by parameters G2 and H1. If parameters G2 and H2 do not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H1. If parameters G1, H1, G2, and H2 do not exist, then the parameter value of the ninth parameter is the third value. The parameters G1, H1, G2, and H2 are used to calculate the uplink transmit power of the payload portion in message A.

29. The method according to any one of claims 24-26, characterized in that, If the uplink transmit power parameter is the ninth parameter, the value of the ninth parameter is related to the type of random access timing of the message to be sent and the type of transmission symbol used by the message to be sent.

30. The method according to claim 29, characterized in that, If the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the ninth parameter is determined by the parameters G1 and H1 in the first configuration. If the parameters G1 and / or H1 do not exist, then the parameter value of the ninth parameter is the third value. If the random access timing type of the message to be sent is the first type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the ninth parameter is determined by parameters G2 and H2 in the second configuration. If parameter G2 does not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H2. If parameter H2 does not exist, then the parameter value of the ninth parameter is determined by parameters G2 and H1. If parameters G2 and H2 do not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H1. If parameters G1, H1, G2, and H2 do not exist, then the parameter value of the ninth parameter is the third value. If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the third type, then the parameter value of the ninth parameter is determined by parameters G3 and H3 in the second configuration. If parameter G3 does not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H3. If parameter H3 does not exist, then the parameter value of the ninth parameter is determined by parameters G3 and H1. If parameters G3 and H3 do not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H1. If parameters G1, H1, G3, and H3 do not exist, then the parameter value of the ninth parameter is the third value. If the random access timing type of the message to be sent is the second type, and the transmission symbol type used by the message to be sent is the fourth type, then the parameter value of the ninth parameter is determined by parameters G4 and H4 in the second configuration. If parameter G4 does not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H4. If parameter H4 does not exist, then the parameter value of the ninth parameter is determined by parameters G4 and H1. If parameters G4 and H4 do not exist, then the parameter value of the ninth parameter is determined by parameters G1 and H1. If parameters G1, H1, G4, and H4 do not exist, then the parameter value of the ninth parameter is the third value. The parameters G1, H1, G2, H2, G3, H3, G4, and H4 are used to calculate the uplink transmit power of the payload portion in message A.

31. The method according to any one of claims 24-30, characterized in that, If the uplink transmit power parameter is the tenth parameter, the value of the tenth parameter is related to the type of transmission symbol used in the message to be sent.

32. The method according to claim 31, characterized in that, If the type of transmission symbol used in the message to be sent is the third type, then the parameter value of the tenth parameter is determined by parameter I1 in the first configuration, or the parameter value of the tenth parameter is the fourth value; If the type of the transmission symbol used in the message to be sent is the fourth type, then the parameter value of the tenth parameter is determined by parameter I2 in the second configuration, or the parameter value of the tenth parameter is the fourth value; The parameters I1 and I2 are used to calculate the uplink transmit power of the payload portion in message A.

33. The method according to any one of claims 24-30, characterized in that, If the uplink transmit power parameter is the tenth parameter, the value of the tenth parameter is related to the type of random access timing of the message to be sent and the type of transmission symbol used by the message to be sent.

34. The method according to claim 33, characterized in that, If the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the tenth parameter is determined by parameter I1 in the first configuration, or the parameter value of the tenth parameter is the fourth value. If the random access timing of the message to be sent is of the first type and the transmission symbol used by the message to be sent is of the fourth type, then the parameter value of the tenth parameter is determined by parameter I2 in the second configuration, or the parameter value of the tenth parameter is the fourth value. If the random access timing of the message to be sent is of the second type and the transmission symbol used by the message to be sent is of the third type, then the parameter value of the tenth parameter is determined by parameter I3 in the second configuration, or the parameter value of the tenth parameter is the fourth value. If the random access timing of the message to be sent is of the second type and the transmission symbol used by the message to be sent is of the fourth type, then the parameter value of the tenth parameter is determined by parameter I4 in the second configuration, or the parameter value of the tenth parameter is the fourth value. Among them, the parameters I1, I2, I3 and I4 are used to calculate the uplink transmit power of the payload portion in message A.

35. A device for determining uplink transmit power in random access, characterized in that, The device includes: The acquisition unit is used to determine the parameter value of the uplink transmit power parameter based on the basic information of the message to be sent, wherein the message to be sent is a message sent by the terminal device to the base station during random access in the sub-band full-duplex system; The determining unit is used to determine the uplink transmission power of the message to be sent based on the parameter value of the uplink transmission power parameter.

36. A terminal device, comprising a processor, a memory, and a computer program or instructions stored in the memory, characterized in that, The processor executes the computer program or instructions to implement the steps of the method according to any one of claims 1-34.

37. A chip, comprising a processor and a communication interface, characterized in that, The processor performs the steps of the method according to any one of claims 1-34 through the communication interface.

38. A computer-readable storage medium, characterized in that, It stores a computer program or instructions, which, when executed, perform the steps of the method described in any one of claims 1-34.

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