Transmission configuration determination method and apparatus, and storage medium

Abstract

A transmission configuration determination method and apparatus, and a storage medium. The method comprises: on the basis of a transmission mode of a message in a random access procedure, determining transmission configuration parameters of the message in the random access procedure, the transmission modes including a first transmission mode and a second transmission mode, the first transmission mode requiring the same type of symbols to be used in different time slots to carry messages, and the second transmission mode requiring different types of symbols to be used in different time slots to carry messages; and, on the basis of the transmission configuration parameters, sending the message in the random access procedure.

Description

Transmission configuration determination method, apparatus and storage medium

[0001] This disclosure claims priority to Chinese patent application No. 202411603631.2, filed on November 8, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a method, apparatus and storage medium for determining transmission configuration. Background Technology

[0003] In wireless communication networks, two duplexing technologies have been introduced to improve spectrum efficiency and resource utilization: subband full duplex (SBFD) and in-band full duplex (IBFD). SBFD technology allows uplink and downlink transmissions to occur in different frequency bands or time slots, while IBDFD technology enables uplink and downlink transmissions to occur simultaneously in the same frequency band and time slot. Summary of the Invention

[0004] On the one hand, a method for determining transmission configuration is provided, applied to the first node, the method comprising:

[0005] Based on the message transmission mode during random access, the message transmission configuration parameters during random access are determined; here, the transmission mode includes a first transmission mode and a second transmission mode. The first transmission mode requires the use of the same type of symbols to carry messages in different time slots, while the second transmission mode requires the use of different types of symbols to carry messages in different time slots.

[0006] Based on the transmission configuration parameters, send messages during the random access process.

[0007] On the other hand, a transmission configuration determination method is provided, applied to a second node, the method comprising:

[0008] Receive messages during the random access process. The transmission configuration parameters for messages during the random access process are determined based on the transmission mode of messages during the random access process.

[0009] Here, the transmission modes include a first transmission mode and a second transmission mode. The first transmission mode requires the use of the same type of symbols to carry messages in different time slots, while the second transmission mode requires the use of different types of symbols to carry messages in different time slots.

[0010] On the other hand, a method for determining transmission configuration is provided, applied to the first node, the method comprising:

[0011] The first node receives configuration information for the first message during the two-step random access process. Based on the configuration information, the first node determines the first message. Here, the first message is configured to include physical random access channel resources and physical uplink shared channel resources. The physical random access channel resources and physical uplink shared channel resources are configured to satisfy one of the following:

[0012] Physical random access channel resources are configured in the first symbol, and physical uplink shared channel resources are configured in the second symbol;

[0013] Physical random access channel resources are configured in the second symbol, and physical uplink shared channel resources are configured in the first symbol;

[0014] Physical random access channel resources are configured in the second symbol, and physical uplink shared channel resources are configured in the second symbol;

[0015] Physical random access channel resources are configured in the first symbol, and physical uplink shared channel resources are configured in the first symbol.

[0016] On the other hand, a transmission configuration determination method is provided, applied to a second node, the method comprising:

[0017] The first message in the two-step random access process is configured to include physical random access channel resources and physical uplink shared channel resources. The physical random access channel resources and physical uplink shared channel resources are configured to satisfy one of the following:

[0018] Physical random access channel resources are configured in the first symbol, and physical uplink shared channel resources are configured in the second symbol;

[0019] Physical random access channel resources are configured in the second symbol, and physical uplink shared channel resources are configured in the first symbol;

[0020] Physical random access channel resources are configured in the second symbol, and physical uplink shared channel resources are configured in the second symbol;

[0021] Physical random access channel resources are configured in the first symbol, and physical uplink shared channel resources are configured in the first symbol.

[0022] In another aspect, a transmission configuration determination device is provided, applied to a first node, the device comprising:

[0023] The processing module is used to determine the message transmission configuration parameters during random access based on the message transmission mode during random access. Here, the transmission mode includes a first transmission mode and a second transmission mode. The first transmission mode requires the use of the same type of symbols to carry messages in different time slots, while the second transmission mode requires the use of different types of symbols to carry messages in different time slots.

[0024] The communication module is used to send messages during the random access process based on transmission configuration parameters.

[0025] On another front, a transmission configuration determination device is provided, applied to a second node, the device comprising:

[0026] The communication module is used to receive messages during the random access process. The transmission configuration parameters of the messages during the random access process are determined based on the transmission mode of the messages during the random access process.

[0027] Here, the transmission modes include a first transmission mode and a second transmission mode. The first transmission mode requires the use of the same type of symbols to carry messages in different time slots, while the second transmission mode requires the use of different types of symbols to carry messages in different time slots.

[0028] On the other hand, a method for determining transmission configuration is provided, applied to the first node, the method comprising:

[0029] The communication module is used to receive configuration information of the first message in the two-step random access process; the first node determines the first message based on the configuration information. Here, the first message is configured to include physical random access channel resources and physical uplink shared channel resources, and the physical random access channel resources and physical uplink shared channel resources are configured to satisfy one of the following:

[0030] Physical random access channel resources are configured in the first symbol, and physical uplink shared channel resources are configured in the second symbol;

[0031] Physical random access channel resources are configured in the second symbol, while physical uplink shared channel resources are configured in the first symbol.

[0032] Physical random access channel resources are configured in the second symbol, and physical uplink shared channel resources are configured in the second symbol;

[0033] Physical random access channel resources are configured in the first symbol, and physical uplink shared channel resources are configured in the first symbol.

[0034] On the other hand, a transmission configuration determination method is provided, applied to a second node, the method comprising:

[0035] The configuration module is used to configure the first message in the two-step random access process. The first message is configured to include physical random access channel resources and physical uplink shared channel resources. The physical random access channel resources and physical uplink shared channel resources are configured to satisfy one of the following:

[0036] Physical random access channel resources are configured in the first symbol, and physical uplink shared channel resources are configured in the second symbol;

[0037] Physical random access channel resources are configured in the second symbol, while physical uplink shared channel resources are configured in the first symbol.

[0038] Physical random access channel resources are configured in the second symbol, and physical uplink shared channel resources are configured in the second symbol;

[0039] Physical random access channel resources are configured in the first symbol, and physical uplink shared channel resources are configured in the first symbol.

[0040] In another aspect, a communication device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is used to store computer program instructions executable by the processor; and the processor implements the above-described transmission configuration determination method when executing the computer program instructions.

[0041] In another aspect, a computer-readable storage medium is provided, on which computer program instructions are stored, which, when executed on a computer (e.g., a communication device or a transmission configuration determination device), implement the aforementioned transmission configuration determination method.

[0042] In another aspect, a computer program product is provided, which includes computer program instructions that, when executed, implement the aforementioned transmission configuration determination method. Attached Figure Description

[0043] Figure 1 is a schematic diagram of an SBFD subband according to some embodiments;

[0044] Figure 2 is a schematic diagram of another SBFD subband according to some embodiments;

[0045] Figure 3 is a schematic diagram of an IBFD subband according to some embodiments;

[0046] Figure 4 is a schematic diagram of the architecture of a communication system according to some embodiments;

[0047] Figure 5 is a flowchart of a transmission configuration determination method according to some embodiments;

[0048] Figure 6 is a flowchart of another method for determining a transmission configuration according to some embodiments;

[0049] Figure 7 is a flowchart of another method for determining a transmission configuration according to some embodiments;

[0050] Figure 8 is a flowchart of another method for determining a transmission configuration according to some embodiments;

[0051] Figure 9 is a block diagram of a transmission configuration determination device according to some embodiments;

[0052] Figure 10 is a block diagram of another transmission configuration determination device according to some embodiments;

[0053] Figure 11 is a block diagram of another transmission configuration determination apparatus according to some embodiments;

[0054] Figure 12 is a block diagram of another transmission configuration determination device according to some embodiments;

[0055] Figure 13 is a block diagram of a communication device according to some embodiments. Detailed Implementation

[0056] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0057] In this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. The terms "first," "second," etc., do not limit the quantity or order of execution, and "first," "second," etc., do not necessarily imply differences.

[0058] It should be noted that in this disclosure, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in this disclosure should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0059] To improve uplink (UL) coverage, reduce UL transmission latency, and increase UL transmission capacity in time division duplex (TDD) systems, subband full-duplex technology has been proposed.

[0060] In related technologies, UL subbands can be configured in some or all downlink (DL) symbols or F symbols, but cannot be configured in UL symbols.

[0061] For example, when a UL sub-band is configured in a DL symbol, this DL symbol may also be configured with a DL sub-band. This configuration, which includes both UL and DL sub-bands, is called an SBFD sub-band. That is, the UL and DL sub-bands (also called SBFD sub-bands) are configured simultaneously in the DL symbol / slot within the DL BWP / F symbol. Here, the symbol with the SBFD sub-band configured is called an SBFD symbol, and the symbol without the SBFD sub-band configured is called a non-SBFD symbol.

[0062] It is worth noting that although SBFD subbands can contain UL subbands and DL subbands, they are prohibited from being configured in UL symbols. In this case, the UL portion bandwidth (BWP) in the UL symbol is used for UL transmission, while the UL subband in the SBFD symbol is used for uplink transmission.

[0063] Here, the SBFD sub-band typically includes at least one DL sub-band and one UL sub-band.

[0064] For example, in a 100MHz TDD carrier, 20 consecutive resource blocks (RBs) are configured as the UL subband in the DL BWP within the DL symbol / slot. The remaining frequency domain resources of the DL BWP are the DL subband (the frequency domain gap between the UL and DL subbands can be left unconfigured). Alternatively, a DL subband can also be configured in the DL BWP within the DL symbol / slot. In this way, within the DL symbol / slot, the UL subband can be used for UL transmission, and the DL subband can be used for DL ​​transmission.

[0065] For example, as shown in Figure 1, an SBFD subband includes a UL subband and a DL subband. This frequency domain pattern is generally referred to as "DUD" (based on frequency domain structure).

[0066] For example, as shown in Figure 2, an SBFD subband includes a UL subband and a DL subband, with the UL subband located below the DL subband. This frequency domain pattern is generally referred to as "DU" (based on frequency domain structure).

[0067] At the current stage, subband full-duplex technology includes the following characteristics: the base station (BS) has the ability to simultaneously perform reception (in the UL subband) and transmission (in the DL subband) in the same time domain. The user equipment (UE) does not have the ability to simultaneously perform reception (in the DL subband) and transmission (in the UL subband) in the same time domain. Here, the UL subband and DL subband are configured in the same orthogonal frequency division multiplexing (OFDM) symbol / slot, and are frequency-division multiplexed.

[0068] For ease of description, a symbol configured with an SBFD subband can be called an SBFD symbol. A slot containing an SBFD symbol is called an SBFD slot. A symbol not configured with an SBFD subband can be called a non-SBFD symbol (i.e., a regular symbol). A slot not containing an SBFD symbol can be called a non-SBFD slot.

[0069] To further improve system efficiency, full-duplex technology has been studied, such as IBFD operation. This involves configuring a time-frequency resource within the carrier bandwidth of a carrier, within which the base station can perform simultaneous transmission and reception on the same frequency. For example, consecutive PRBs can be configured as IBFD subbands within the carrier bandwidth, and these IBFD subbands can be configured in all or some symbols to form a resource for an IBFD operation.

[0070] For example, Figure 3 is a schematic diagram of an IBFD subband according to some embodiments. Part or all of the carrier bandwidth of a carrier is configured as an IBFD subband, and the IBFD is configured in all or part of the symbols.

[0071] For ease of description, a symbol configured with an IBFD subband is called an IBFD symbol. A slot containing an IBFD symbol is called an IBFD slot. A symbol not configured with an IBFD subband is called a non-IBFD symbol (that is, a regular symbol). A slot not containing an IBFD symbol is called a non-IBFD slot.

[0072] Understandably, based on SBFD subband operations, UL transmission is performed only within the UL subband, and DL transmission is performed only within the DL subband. Based on IBFD subband operations, UL and DL transmissions are performed simultaneously and on the same frequency within the IBFD subband; that is, the base station performs UL reception and DL transmission simultaneously in the same frequency domain within the same resource.

[0073] The issues discussed below are the same in both SBFD and IBFD sub-bands, so the following description uses SBFD sub-bands as an example. That is, the SBFD sub-bands described below can be replaced by IBFD sub-bands, or the UL or DL ​​sub-bands described below can be replaced by IBFD sub-bands.

[0074] However, this flexible resource allocation also brings new challenges, especially in uplink transmission, including the initial random access phase and the triggered access process after network access. Determining the relevant configurations for these uplink transmissions in the SBFD and IBFD subbands to ensure that the relevant equipment can complete these processes efficiently and reliably has become an urgent problem to solve. A solution to this problem is presented below, thereby supporting UL common transmissions in the UL subband.

[0075] In mobile communication systems, the random access procedure is a crucial step used to establish or reconnect between the UE and the base station. This process can be divided into a four-step random access procedure and a two-step random access procedure, depending on the system configuration and scenario requirements.

[0076] Here, the messages in the four-step random access process include at least the following message types:

[0077] msg1: refers to the first message in the four-step access process, that is, a sequence of random access is transmitted in a physical random access channel (PRACH) resource. msg1 is used to notify the base station that the UE wants to establish a connection and to allow the base station to estimate the uplink timing of the UE.

[0078] msg3: This refers to the third message in the four-step access process. It is a message sent on the Physical Uplink Shared Channel (PUSCH) scheduled by the Random Access Response (RAR) Uplink Grant (UL Grant) (i.e., a special PUSCH). msg3 typically contains the UE's identity (such as a Radio Resource Control (RRC) connection request) and the UE's timing advance. msg3 is used to complete the connection establishment between the UE and the base station, including authentication and resource configuration.

[0079] The physical uplink control channel (PUCCH) for msg4 refers to the acknowledgment (ACK) information corresponding to the fourth message msg4 (i.e., a PDSCH) in the four-step random access process. For example, in the four-step random access process, the base station sends the PDSCH (msg4) corresponding to the fourth message to the UE, and the UE needs to provide a hybrid automatic repeat request acknowledgment (HARQ-ACK) information for this msg4 via the PUCCH.

[0080] Here, the messages in the two-step random access process include at least the following message types:

[0081] msgA: This refers to the first message in the two-step random access procedure, consisting of a PRACH and a corresponding PUSCH. msgA also includes the random access preamble sequence and other information the UE wishes to send (such as an RRC connection request).

[0082] The PUCCH of msgB refers to the ACK information corresponding to the second message msgB (i.e., a PDSCH) in the two-step access process. That is, the UE needs to provide HARQ-ACK information for this msgB through a PUCCH resource.

[0083] Two transmission modes are provided below:

[0084] Mode 1: This refers to UL transmission / DL reception being restricted to either SBFD symbols or non-SBFD symbols in different slots. For example, if UL transmission / DL reception is restricted to SBFD symbols in different slots, then all transmissions (including repetitive and periodic transmissions) of that UL transmission / DL reception can only occur within SBFD symbols. Similarly, if UL transmission / DL reception is restricted to non-SBFD symbols in different slots, then all transmissions (including repetitive and periodic transmissions) of that UL transmission / DL reception can only occur within non-SBFD symbols. In some embodiments, if Mode 1 is configured, further methods are needed to determine the valid symbol type corresponding to the UL transmission / DL reception (i.e., whether it is performed only within SBFD symbols or only within non-SBFD symbols), and UL transmission / DL reception is performed only within the symbols corresponding to the valid symbol type.

[0085] Mode 2 refers to the ability of UL transmit / DL receive to use SBFD symbols and non-SBFD symbols in different slots. For example, one transmission (periodic or repetitive transmission) of the UL transmit / DL receive may be in the SBFD symbol of slot n, while another transmission of the same UL transmit / DL receive may be in the non-SBFD symbol of slot m.

[0086] Here, depending on the different message transmission requirements during random access, either Mode 1 or Mode 2 can be flexibly selected as the message transmission mode during random access. Further research is needed on how to flexibly adjust the corresponding transmission configuration based on the message transmission mode during random access to ensure that the relevant equipment can complete the random access process efficiently and reliably.

[0087] In view of this, embodiments of the present disclosure provide a transmission configuration determination method, the method comprising: determining transmission configuration parameters of messages during random access based on the transmission mode of messages during random access; here, the transmission mode includes a first transmission mode (e.g., mode 1 above) and a second transmission mode (e.g., mode 2 above), the first transmission mode requiring the use of the same type of symbols to carry messages in different time slots, and the second transmission mode requiring the use of different types of symbols to carry messages in different time slots; and sending messages during random access based on the transmission configuration parameters.

[0088] In this way, during random access, due to varying message transmission requirements, the corresponding transmission mode can flexibly select either the first or second transmission mode to carry the message. The first transmission mode requires the use of the same type of symbol across different time slots, ensuring message consistency and reliability, and is particularly suitable for service scenarios requiring continuous and stable communication. The second transmission mode, on the other hand, allows the use of different types of symbols across different time slots, providing greater network adaptability and dynamic adjustment capabilities to meet the needs of diverse services. By flexibly adjusting the corresponding transmission configuration parameters based on the message transmission mode, users are provided with more efficient, stable, and flexible network access services, significantly improving the utilization efficiency of network resources, thereby achieving overall optimization of network transmission.

[0089] The transmission configuration determination method provided in this disclosure can be applied to systems with various communication standards. For example, the systems to which this transmission configuration determination method can be applied include, but are not limited to, long-term evolution (LTE) systems, various versions of LTE evolution, 5th generation (5G) communication systems, wireless fidelity (Wi-Fi) systems, 3GPP-related communication systems, ambient internet of things (Ambient IoT) systems, or systems integrating multiple systems. Furthermore, the transmission configuration determination method provided in this disclosure can also be applied to future-oriented communication systems (such as 6th generation (6G) communication systems), and this disclosure does not limit its application in this regard.

[0090] The network architecture of the mobile communication network (including but not limited to 3G, 4G, 5G, and future mobile communication networks) in this disclosure embodiment may include at least a first communication node and a second communication node. It should be understood that, in some examples, in the downlink, the first communication node may be a network-side device (e.g., including but not limited to a base station), and the second communication node may be a terminal-side device (e.g., including but not limited to a terminal). Of course, in the uplink, the first communication node may also be a terminal-side device, and the second communication node may also be a network-side device. In device-to-device communication between the two communication nodes, both the first and second communication nodes can be a base station or a terminal. The first and second communication nodes may be referred to as the first node and the second node, respectively.

[0091] For example, taking the first node as a terminal and the second node as a base station, Figure 4 shows a schematic diagram of the architecture of a communication system provided in an embodiment of this disclosure. The communication system includes a terminal 10 and a base station 20. There can be one or more terminals 10 and base stations 20, and the number is not limited.

[0092] Here, terminal 10 is communicatively connected to base station 20. The terminal can be a terminal-side device (e.g., including but not limited to a terminal), an IoT device, etc., and the base station can be a network-side device (e.g., including but not limited to a base station), an access network device, etc.

[0093] In some embodiments, terminal 10 can be a device with wireless transceiver capabilities. Terminals can be passive devices, ambient IoT devices, mobile phones, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, self-driving, remote medical care, smart grids, transportation safety, smart cities, smart homes, etc. The embodiments of this disclosure do not limit the application scenarios. Terminals may also be referred to as users, UEs, access terminals, UE units, UE stations, mobile stations, mobile terminals, remote stations, remote terminals, mobile devices, UE terminals, wireless communication devices, UE agents, or UE devices, etc., and the embodiments of this disclosure do not limit these terms.

[0094] In some embodiments, base station 20 may be a base station in LTE, long term evolution advanced (LTEA) or an evolved Node B (eNB or eNodeB), a base station device in a 5G network, or a base station in a future communication system, etc. The base station may include various macro base stations, micro base stations, home base stations, wireless remote extensions, reconfigurable intelligent surfaces (RISs), routers, relays, TRPs, wireless fidelity (WIFI) devices, UEs and other network-side devices, and this disclosure does not limit this.

[0095] It should be noted that Figure 4 is only an exemplary framework diagram. The number of devices included in Figure 4 and the names of each device are not limited. In addition to the devices shown in Figure 4, the communication system may also include other devices, such as core network devices.

[0096] The application scenarios of the embodiments disclosed herein are not limited. The system architecture and business scenarios described in the embodiments of this disclosure are for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of this disclosure. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this disclosure are also applicable to similar technical problems.

[0097] This disclosure provides a transmission configuration determination method applied to a first node. As shown in FIG5, the method includes the following steps S101 and S102.

[0098] In S101, the message transmission configuration parameters during the random access process are determined based on the message transmission mode during the random access process.

[0099] Here, the transmission modes include a first transmission mode and a second transmission mode. The first transmission mode requires the use of the same type of symbols to carry messages in different time slots, while the second transmission mode requires the use of different types of symbols to carry messages in different time slots.

[0100] In some embodiments, the symbol type includes a first symbol and a second symbol. The first symbol includes sub-band full-duplex symbols (SBFD symbols) and in-band full-duplex symbols (IBFD symbols), and the second symbol includes non-sub-band full-duplex symbols (non-SBFD symbols) and non-in-band full-duplex symbols (non-IBFD symbols). In some embodiments, the message is the third message (msg3) in the four-step random access procedure, and the transmission configuration parameters include at least one of the following:

[0101] Valid symbol types for msg3;

[0102] Valid symbol types for retransmitting msg3;

[0103] The power corresponding to msg3;

[0104] The power corresponding to retransmitting msg3; or

[0105] The transmission slot for msg3.

[0106] It is understandable that msg3 is transmitted within the symbol corresponding to the valid symbol type, but not within the symbol corresponding to the invalid symbol type.

[0107] In some embodiments, the transmission mode is a first transmission mode, and the valid symbol type of msg3 (including msg3 with repetition) is determined based on one of the following methods (Option1-1, Option1-2, Option1-3, and Option1-4).

[0108] Option 1-1: The symbol type of the symbol in which msg3 is first transmitted is the valid symbol type of msg3. Here, the first transmission includes the first repeated transmission of msg3.

[0109] For example, for a msg3 with N (N > 0) repetitions, the symbol type (i.e., SBFD symbol or non-SBFD symbol) of the symbol containing the first repetition of msg3 is determined as the valid symbol type of msg3. Here, the slot position of the first repetition of msg3 and the symbol position (including the number of symbols and the symbol position) within that slot are indicated by the base station, for example, based on the Random Access Response Uplink Grant (RAR UL grant). All repetitions of msg3 can only be transmitted within the symbols corresponding to the valid symbol type of msg3 (not elaborated further below).

[0110] For a non-repeating msg3, the symbol type of the symbol containing the msg3 (i.e., SBFD symbol or non-SBFD symbol) is determined as the valid symbol type of the msg3. Here, the slot position of the msg3 and the symbol position within that slot (including the number of symbols and the symbol position) are indicated by the base station, for example, based on RAR UL grant indication.

[0111] msg3 is transmitted in the symbol corresponding to the valid symbol type, and the transmission parameters associated with msg3 (including but not limited to power control parameters, beam parameters, and frequency hopping parameters) are transmitted using the valid symbol type, which will not be elaborated on later.

[0112] Option 1-2: Indicate the valid symbol type of msg3 based on the first indication information, which is carried in the RAR UL grant.

[0113] For example, the base station indicates the valid symbol type for msg3 in the RAR UL grant that schedules msg3 (including msg3 with N repetitions). For example, a parameter is introduced in the RAR UL grant to indicate the valid symbol type for a msg3.

[0114] In some embodiments, the first indication information is carried in the random access response uplink grant (RAR UL grant) and includes at least one of the following (Alt1-1, Alt1-2, Alt1-3, Alt1-4, and Alt1-5):

[0115] Alt1-1: The first indication information is determined based on the Channel State Information (CSI) request field in the uplink grant of the Random Access Response. For example, the CSI request field in the RAR UL grant is 1 bit. Setting it to 1 (or 0) indicates that the valid symbol type of msg3 in the first transmission mode is SBFD, and setting it to 0 (or 1) indicates that the valid symbol type of msg3 in the first transmission mode is non-SBFD. This method does not increase the signaling overhead in the RAR UL grant.

[0116] Alt1-2: The first indication information is determined based on the Physical Uplink Shared Channel (PUSCH) time resource allocation field in the uplink grant of the random access response. For example, in the time resource allocation table associated with msg3, the base station configures a symbol type for one or more (candidate) time resources. The base station and the UE agree that if a time resource is allocated for msg3 from this table, the symbol type associated with that time resource is used as the valid symbol type for msg3 in the first transmission mode.

[0117] Alt1-3: The first indication information is determined based on the Physical Uplink Shared Channel frequency resource allocation (PUSCH) field in the uplink grant of the random access response;

[0118] Alt1-4: The first indication information is determined based on the modulation and coding scheme (MCS) field in the uplink grant of the random access response;

[0119] Alt1-5: The first indication information is determined based on the Transmission Power Control Command (TPC command for PUSCH) field of the Physical Uplink Shared Channel in the uplink grant of the random access response.

[0120] It should be noted that the above RAR UL grant can be transmitted in PDSCH based on MAC CE format or in DCI format 0_0 based on PDCCH; please refer to the relevant standards. Regardless of the method, the above examples (Alt1-1 to Alt1-5) are all supported.

[0121] Option 1-3: The valid symbol type of msg3 is the same as the symbol type used in the first message (hereinafter referred to as msg1).

[0122] For example, the base station and the UE agree that in the first transmission mode, the valid symbol type of msg3 (including N (N greater than 0) repetitions) is the same as the symbol type of the symbol used by the UE to transmit msg1.

[0123] Option 1-4: Configure the valid symbol type of msg3 via RRC signaling.

[0124] For example, the base station and the UE agree that, for the UE (including idle / inactive UEs and connected UEs), the effective symbol type of msg3 (including msg3 with N repetitions) in the first transmission mode is configured in the BWP-UplinkCommon message, PUSCH-ConfigCommon message, PUSCH-PowerControl message, RACH-ConfigCommon message, or SIB1.

[0125] In some embodiments, the transmission mode is a first transmission mode, and the valid symbol type for retransmitted msg3 (including msg3 with duplicates) is determined based on one of the following methods (Option 2-1, Option 2-2, Option 2-3, and Option 2-4):

[0126] Option 2-1: The valid symbol type for retransmitting msg3 is the symbol type of the symbol in which msg3 was first retransmitted.

[0127] For example, for a retransmitted msg3 with N (N > 0) repetitions, the symbol type (i.e., SBFD symbol or non-SBFD symbol) of the symbol containing the first repetition of msg3 is determined as the valid symbol type of msg3. Here, the slot position of the first repetition of msg3 and the symbol position (including the number of symbols and the symbol position) within that slot are indicated by the base station, for example, based on RAR UL grant indication. All repetitions of msg3 can only be transmitted within the symbols corresponding to the valid symbol type of msg3 (this will not be elaborated further below).

[0128] For a retransmitted msg3 that does not contain duplicate msg3, the symbol type of the symbol containing the msg3 (i.e., SBFD symbol or non-SBFD symbol) is determined as the valid symbol type of the msg3. Here, the slot position where the first retransmission of the msg3 occurs and the symbol position (including the number of symbols and the symbol position) within that slot are indicated by the base station, for example, based on RAR UL grant indication.

[0129] The retransmitted msg3 is transmitted in the symbol corresponding to the valid symbol type, and the transmission parameters associated with the msg3 (including but not limited to power control parameters, beam parameters, and frequency hopping parameters) are configured using the valid symbol type, which will not be elaborated on later.

[0130] Option 2-2: Retransmit msg3 (including N (N greater than 0) repetitions) with the same valid symbol type as the symbol used in msg1.

[0131] Option 2-3: Based on the second indication information, indicate the valid symbol type for retransmitting the third message. The second indication information is carried in the downlink control information (DCI) scrambled by the temporary cell radio network temporary identifier (TC_RNTI).

[0132] For example, the base station and the UE agree that the DCI (e.g., DCI0_0 format) of the retransmitted msg3 (including msg3 with N repetitions) indicates the valid symbol type of the retransmitted msg3 in the first transmission mode. Here, the DCI is scrambled by TC-RNTI.

[0133] In some embodiments, the second indication information is carried in downlink control information scrambled by TC_RNTI, including at least one of the following (Alt2-1 to Alt2-7):

[0134] Alt2-1: The second indication information is determined based on the New data indicator field in the downlink control information scrambled by TC_RNTI.

[0135] For example, the "New data indicator" field in the DCI0_0 format can be reinterpreted. In the DCI0_0 format, the "New data indicator" field is 1 bit. Setting it to 1 (or 0) indicates that the valid symbol type for msg3 in the first transmission mode is SBFD, and setting it to 0 (or 1) indicates that the valid symbol type for msg3 in the first transmission mode is non-SBFD. This method does not increase the signaling overhead in the RAR UL grant. Here, the "New data indicator" was originally used to indicate whether new data has been scheduled.

[0136] Alt2-2: The second indication information is determined based on the Hybrid Automatic Repeat Request (HARQ) process number field in the downlink control information scrambled by TC_RNTI.

[0137] For example, reinterpreting the "HARQ process number" field in the DCI0_0 format, which is 4 bits, we can set the most significant (or least significant) bit to 1 (or 0) to indicate that the valid symbol type of msg3 in the first transmission mode is SBFD, and set it to 0 (or 1) to indicate that the valid symbol type of msg3 in the first transmission mode is non-SBFD. Alternatively, we can set the 4-bit state, using two states to correspond to two symbol types. This method does not increase the signaling overhead in the RAR UL grant. Here, the "HARQ process number" was originally used to indicate the HARQ process number used by the scheduled data.

[0138] Alt2-3: The second indication information is determined based on a new field in the downlink control information scrambled by TC_RNTI. Here, the bits corresponding to the new field use a portion of the padding field. This portion of the bit, including a 1-bit portion, is located in the second least significant bit of all bits in the downlink control information.

[0139] For example, a parameter can be added to the DCI0_0 format to indicate the valid symbol type of msg3 in the first transmission mode. In response to TC-RNTI scrambling, the DCI0_0 contains multiple padding bits, one of which can be set to indicate the valid symbol type of msg3 under the configuration. This single padding bit is located in the second least significant bit (in ascending order) of the DCI0_0 format. This position facilitates the effective identification of this single padding bit from the DCI0_0 without affecting the bit positions of other parameter fields in the DCI0_0 format.

[0140] Alt2-4: The second indication information is determined based on the Physical Uplink Shared Channel Time Resource Allocation (PUSCH) field in the downlink control information scrambled by TC_RNTI.

[0141] For example, in the time-domain resource allocation table associated with msg3, the base station configures a symbol type for one or more (candidate) time-domain resources. The base station and the UE agree that if a time-domain resource is allocated for msg3 from this table, the symbol type associated with that time-domain resource is the valid symbol type for msg3 in the first transmission mode.

[0142] Alt2-5: The second indication information is determined based on the Physical Uplink Shared Channel frequency resource allocation (PUSCH) field in the downlink control information.

[0143] Alt2-6: The second indication information is determined based on the modulation and coding scheme (MCS) field in the downlink control information.

[0144] Alt2-7: The second indication information is determined based on the Transmission Power Control Command (TPC command for PUSCH) field of the Physical Uplink Shared Channel in the downlink control information.

[0145] Option 2-4: Configure the valid symbol type for retransmitting msg3 via RRC signaling.

[0146] For example, the base station and the UE agree that, for the UE (including idle / inactive UEs and connected UEs), the valid symbol type of the retransmitted msg3 (including msg3 with N repetitions) in the first transmission mode is configured in the BWP-UplinkCommon message, PUSCH-ConfigCommon message, PUSCH-PowerControl message, RACH-ConfigCommon message, or SIB1.

[0147] The following are the rules for determining the transport block size (TB size) of msg3 when the valid symbol type is SBFD:

[0148] In response to a (retransmitted) msg3 with a valid symbol type of SBFD, the TB size of the msg3 is determined based on one of the following: the number of allocated PRBs in the UL available PRBs; the number of allocated PRBs in the UL available initial PRBs; or the allocated PRBs (including PRBs exceeding the UL available (initial) PRBs). Here, the UL available PRBs are the intersection PRBs of the UL subband and the active UL BWP in the frequency domain; the UL available initial PRBs are the intersection PRBs of the UL subband and the initial UL BWP in the frequency domain.

[0149] In some embodiments, the transmission mode is a first transmission mode, the third message is transmitted only in the symbols corresponding to the determined valid symbol type, and the power of the third message is determined based on the third indication information.

[0150] Here, the third instruction information satisfies at least one of the following:

[0151] In response to the third message having a valid symbol type of the first symbol, the third indication information is parsed based on the power control parameters / tables configured for the third message and associated with the first symbol; or,

[0152] In response to the third message having a valid symbol type of the second symbol, the third indication information is parsed based on the power control parameters / tables configured for the third message and associated with the second symbol;

[0153] In response to the initial transmission of the third message, the third indication information is determined based on the Transmission Power Control Command for PUSCH field of the Physical Uplink Shared Channel in the RAR UL grant; or,

[0154] In response to the retransmission of the third message, the third indication information is determined based on the Transmission Power Control Command for PUSCH field in the downlink control information.

[0155] For example, regarding the power determination of the initial transmitted msg3, the base station and UE agree that, for msg3 (including msg3 with repetition), in the first transmission mode, the "TPC command for scheduled PUSCH" field in the RAR UL grant or DCI0_0 format is interpreted based on the valid symbol type of msg3. For instance, the base station configures relevant power control parameters or tables for SBFD symbols and non-SBFD symbols respectively. If the valid symbol type of msg3 is determined to be an SBFD symbol, then the "TPC command for scheduled PUSCH" field in the RAR UL grant or DCI0_0 format corresponding to msg3 is understood based on the power control parameters or tables configured for SBFD symbols. If the valid symbol type of msg3 is determined to be a non-SBFD symbol, then the "TPC command for scheduled PUSCH" field in the RAR UL grant or DCI0_0 format corresponding to msg3 is understood based on the power control parameters or tables configured for non-SBFD symbols.

[0156] For example, regarding the power determination of retransmitted msg3, the base station and UE agree to introduce a parameter in the DCI0_0 format scrambled by TC-RNTI. This parameter is used to indicate the power control parameters corresponding to the retransmission of msg3 (including msg3 with N repetitions). For example, a new "TPC command for scheduled PUSCH" field is introduced for msg3 retransmission in SBFD symbols.

[0157] Examples may include one of the following:

[0158] For example, in scenario 1, the "HARQ process number" field in the DCI0_0 format is reinterpreted to determine the power control parameters for msg3 when transmitted in an SBFD symbol. Here, it is assumed that the original "TPC command for scheduled PUSCH" in the DCI0_0 format is used as the power control parameter for msg3 when transmitted in a non-SBFD symbol. The reverse is also possible. For instance, if the "HARQ process number" field in the DCI0_0 format is 4 bits, the most significant (or least significant) 2 bits can be set to the "TPC command for scheduled PUSCH" for msg3 when transmitted in an SBFD symbol. Here, the "HARQ process number" was originally used to indicate the HARQ process number used by the scheduled data.

[0159] For example, in option 2, an additional parameter is added to the DCI0_0 format to indicate the "TPC command for scheduled PUSCH" when retransmitting msg3 in the SBFD symbol. For instance, two padding bits are set to indicate the "TPC command for scheduled PUSCH" when msg3 is transmitted in the SBFD symbol. These two padding bits are located in the second and third least significant bits (in ascending order) of the DCI0_0 format. This placement facilitates efficient identification of these two padding bits from the DCI0_0 format without affecting the bit positions of other parameter fields in the DCI0_0 format.

[0160] In some embodiments, the transmission mode is a second transmission mode, the third message is transmitted simultaneously in the first symbol and the second symbol, and the power of the third message is determined based on the third indication information.

[0161] Here, the target type symbol is the first symbol, and the non-target type symbol is the second symbol; or, the non-target type symbol is the second symbol, and the target type symbol is the first symbol.

[0162] The third message is transmitted within the target type symbol, and the third indication information is parsed based on the power control parameters / tables configured in the third message and associated with the target type symbol; or,

[0163] The third message is transmitted in a non-target type symbol, and the power of the third message is determined based on an offset and the third indication information parsed based on the power control parameters / table associated with the target type symbol.

[0164] In response to the initial transmission of the third message, the third indication information is determined based on the Transmission Power Control (TPC) command for PUSCH field in the RAR UL grant; or,

[0165] In response to the retransmission of the third message, the third indication information is determined based on the Transmission Power Control Command (TPC) for PUSCH field in the Downlink Control Information.

[0166] In some embodiments, the offset is determined based on at least one of the following: Radio Resource Control (RRC) signaling, the Channel State Information Request (CSI) field in the second message of the four-step random access procedure, or the uplink grant in the random access response.

[0167] For example, the base station and UE agree that, for msg3 (including msg3 with repetition), in the second transmission mode, the "TPC command for scheduled PUSCH" field in the RAR UL grant or DCI0_0 format is interpreted based on the fact that msg3 is transmitted in a non-SBFD symbol. Then, an offset is introduced, based on this offset and the power determined in the non-SBFD symbol, to determine the power corresponding to the transmission of msg3 in the SBFD symbol. That is, there is an offset between the power used by msg3 in the SBFD symbol and when transmitted in the non-SBFD symbol. This offset can be configured by RRC or the offset can be configured in msg2. Alternatively, the aforementioned CSI request can be used to indicate that the offset is from two offset sets configured by RRC signaling.

[0168] In some embodiments, the message is the third message in a four-step random access process. The transmission mode of the (retransmitted) third message (with N (N>0) repetitions) is determined based on fourth indication information, which is used to indicate whether the transmission mode of the third message is the first transmission mode or the second transmission mode. The fourth indication information is determined based on RAR UL grant or downlink control information scrambled by TC_RNTI (e.g., DCI0_0).

[0169] In some embodiments, the fourth indication information is determined based on RAR UL grant or downlink control information scrambled by TC_RNTI, including one of the following (Alt3-1 to Alt3-4):

[0170] Alt3-1: The fourth indication information is determined based on the Channel State Information Request (CSI-request) field in the RAR UL grant.

[0171] Alt3-2: The fourth indication information is determined based on the New data indicator field in the downlink control information.

[0172] Alt3-3: The fourth indication information is determined based on the Hybrid Automatic Repeat Request (HARQ) process number field in the downlink control information.

[0173] Alt3-4: The fourth indication information is determined based on a new field in the downlink control information. Here, the bits corresponding to the new field use a portion of the padding field. This portion of the bit, including the 1-bit portion, is located in the second least significant bit of all bits in the downlink control information.

[0174] For example, the base station and the UE agree that the transmission mode of (retransmitted) msg3 (including retransmission with repetition) is either the first transmission mode or the second transmission mode in the TC-RNTI scrambled DCI0_0. This TC-RNTI scrambled DCI0_0 is used to schedule the retransmitted msg3. Examples include one of the following:

[0175] For example, in step 1, the "New data indicator" field in the DCI0_0 format is reinterpreted to determine whether msg3 is configured for the first or second transmission mode. For instance, the "New data indicator" field in the DCI0_0 format is 1 bit; setting it to 1 (or 0) indicates that msg3 is in the first transmission mode, and setting it to 0 (or 1) indicates that msg3 is in the second transmission mode. This method does not increase the signaling overhead in the RAR UL grant. Here, the "New data indicator" was originally used to indicate whether new data has been scheduled.

[0176] For example, in scenario 2, the "HARQ process number" field in the DCI0_0 format is reinterpreted to determine whether msg3 is configured for the first or second transmission mode. For instance, the "HARQ process number" field in the DCI0_0 format is 4 bits. Setting the most significant (or least significant) bit to 1 (or 0) indicates that msg3 is in the first transmission mode, and setting it to 0 (or 1) indicates that msg3 is in the second transmission mode. Alternatively, the 4-bit state can be set to correspond to both the first and second transmission modes. This method does not increase the signaling overhead in the RAR UL grant. Here, the "HARQ process number" was originally used to indicate the HARQ process number used by the scheduled data.

[0177] For example, in option 3, a parameter is added to the DCI0_0 format to indicate whether msg3 is configured for the first or second transmission mode. In response to TC-RNTI scrambling, the DCI0_0 contains multiple padding bits, one of which can be set to indicate whether msg3 is configured for the first or second transmission mode. This padding bit is located in the second least significant bit (from least significant to most significant bit) of the DCI0_0 format. This position facilitates effective identification of the padding bit from the DCI0_0 without affecting the bit positions of other parameter fields in the DCI0_0 format.

[0178] Alt3-5: The fourth indication information is determined based on the Physical Uplink Shared Channel Time Resource Allocation (PUSCH) field in the RAR UL grant or downlink control information;

[0179] Alt3-6: The fourth indication information is determined based on the Physical Uplink Shared Channel Frequency Resource Allocation (PUSCH) field in the RAR UL grant or downlink control information;

[0180] Alt3-7: The fourth indication information is determined based on the modulation and coding scheme (MCS) field in the RAR UL grant or downlink control information;

[0181] Alt3-8: The fourth indication information is determined based on the Transmission Power Control Command (TPC) for PUSCH field of the Physical Uplink Shared Channel in the RAR UL grant or downlink control information.

[0182] In some embodiments, when the third message is a third message that is repeatedly sent N times, the transmission mode of the third message is the first transmission mode, and the valid symbol type of the third message is the second symbol, the transmission time slot of the third message is N time slots starting from the first time slot, where N is a positive integer.

[0183] Here, for each of the N time slots, the time slot satisfies at least one of the following (Rule 1):

[0184] The symbol containing the third message within the time slot does not include the configured downlink symbol;

[0185] The symbol containing the third message within the time slot does not contain the symbol of the synchronization signal block (SSB); or,

[0186] The symbol containing the third message within the time slot does not include the configured first symbol;

[0187] Here, the downlink symbol is configured by the time-division duplex uplink and downlink configuration common parameter tdd-UL-DL-ConfigurationCommon;

[0188] The SSB is configured by the synchronization channel block position indication parameter ssb-PositionsInBurst.

[0189] In other words, starting from the first time slot, if a slot does not contain any DL symbols configured by tdd-UL-DL-ConfigurationCommon (not configured with SBFD subbands), or any SSB symbols indexed by ssb-PositionsInBurst, or any symbols configured with SBFD subbands, then that slot is counted as one of N slots. Specifically, starting from the first time slot, if a slot contains any symbols provided for the repetition of msg3 that are: symbols not configured with SBFD subbands, and are either F or UL symbols, and are not SSB symbols indexed by ssb-PositionsInBurst, then that slot is counted as one of N slots.

[0190] In some embodiments, when the third message is a third message that is repeatedly sent N times, the transmission mode of the third message is the first transmission mode, and the valid symbol type of the third message is the first symbol, the transmission time slot of the third message is N time slots starting from the first time slot, where N is a positive integer.

[0191] Here, for each of the N time slots, the symbol containing the third message within the time slot is the configured first symbol, and the symbol containing the third message within the time slot does not include the symbol of the SSB (Rule 2); the SSB is configured by the synchronization channel block position indication parameter ssb-PositionsInBurst.

[0192] In some embodiments, when the third message is a third message that is repeatedly sent N times and the transmission mode of the third message is the second transmission mode, the transmission time slot of the third message is N time slots starting from the first time slot, where N is a positive integer.

[0193] Here, for each of the N time slots, the symbol containing the third message within the time slot is an SBFD symbol, a flexible symbol, or an uplink symbol, and the symbol containing the third message within the time slot does not include an SSB symbol; the SSB is configured by the synchronization channel block position indication parameter ssb-PositionsInBurst (rule 3). That is, if a slot satisfies rule 1 above, or satisfies rule 2 above, then that slot is counted as one of the N slots.

[0194] In some embodiments, the first time slot is determined as follows: A = slot n + k2 + Δ + 2 μ ·K cell,offset

[0195] Here, A is the first time slot, slot n is the time slot where the end of the Physical Downlink Shared Channel (PDSCH) of the received Random Access Response (RAR) message is located, k2 is defined based on the subcarrier spacing used in the third message, is determined based on the time-domain resource allocation table of the third message, Δ is defined based on the subcarrier spacing used in the third message, and K... cell,offset The cell-specific offset is defined based on the parameter cellSpecificKoffset, where μ is the subcarrier spacing of the third message.

[0196] For example, Table 1 provides the values ​​of Δ for different subcarrier spacings (μ).

[0197] Table 1

[0198] In some embodiments, the message is the first message in a two-step random access process, and the transmission configuration parameters include the transmission time slot of the first message.

[0199] In some embodiments, when the first message is a first message that is repeatedly sent N times, the transmission mode of the first message is a first transmission mode, and the valid symbol type of the first message is a second symbol, the transmission time slot of the first message is N time slots starting from the second time slot, where N is a positive integer;

[0200] Here, for each of the N time slots, the time slot satisfies at least one of the following:

[0201] The symbol containing the first message within a time slot does not include the configured downlink symbol;

[0202] The symbol containing the first message within the time slot does not contain the symbol of the Synchronization Channel Block (SSB); or,

[0203] The symbol containing the first message within a time slot does not include the configured first symbol;

[0204] Here, the downlink symbol is configured by the time-division duplex uplink / downlink configuration common parameter tdd-UL-DL-ConfigurationCommon, and the SSB is configured by the synchronization channel block position indication parameter ssb-PositionsInBurst.

[0205] In other words, starting from the second time slot, if a slot does not contain any DL symbols configured by tdd-UL-DL-ConfigurationCommon (not configured with SBFD subbands), or any SSB symbols indexed by ssb-PositionsInBurst, or any symbols configured with SBFD subbands, then that slot is counted as one of N slots. Specifically, starting from the second time slot, if a slot contains any symbols that are not configured with SBFD subbands, are F symbols or UL symbols, and are not SSB symbols indexed by ssb-PositionsInBurst, then that slot is counted as one of N slots.

[0206] In some embodiments, when the first message is a first message that is repeatedly sent N times, the transmission mode of the first message is a first transmission mode, and the valid symbol type of the first message is a first symbol, the transmission time slot of the first message is N time slots starting from the second time slot, where N is a positive integer;

[0207] Here, for each of the N time slots, the symbol containing the first message within the time slot is the configured first symbol, and the symbol containing the first message within the time slot does not include the SSB symbol. The SSB is configured by the synchronization channel block position indication parameter ssb-PositionsInBurst.

[0208] In some embodiments, when the first message is a first message that is repeatedly sent N times and the transmission mode of the first message is a second transmission mode, the transmission time slot of the first message is N time slots starting from the second time slot, where N is a positive integer;

[0209] Here, for each of the N time slots, the symbol containing the first message within the time slot is either the first symbol, a flexible symbol, or an uplink symbol, and the symbol containing the first message within the time slot does not include the symbol of the SSB; the SSB is configured by the synchronization channel block position indication parameter ssb-PositionsInBurst.

[0210] In some embodiments, the second time slot is determined as follows: B = slot n + k2 + Δ + 2 μ ·K cell,offset

[0211] Here, B is the second time slot, slot n is the time slot where the end of the Physical Downlink Shared Channel (PDSCH) of the received Random Access Response (RAR) message is located, k2 is defined based on the subcarrier spacing used in the first message, k2 is determined based on the time-domain resource allocation table of the first message, Δ is defined based on the subcarrier spacing used in the first message, and K... cell,offset The cell-specific offset is defined based on the parameter cellSpecificKoffset, where μ is the subcarrier spacing of the first message.

[0212] In some embodiments, the message is the fourth message (denoted as msg4) in the four-step random access procedure, and the transmission configuration parameters include at least one of the following:

[0213] The valid symbol type of the Physical Uplink Control Channel (PUCCH) of msg4 (the PUCCH of msg4 or msgB is transmitted in the symbols corresponding to the valid symbol type, and not in the symbols corresponding to the invalid symbol type); or,

[0214] The beam direction of the physical uplink control channel PUCCH of msg4.

[0215] In some embodiments, the transmission mode is the first transmission mode, and the effective symbol type of the physical uplink control channel of msg4 is determined based on one of the following methods (Option 3-1, Option 3-2, and Option 3-3):

[0216] Here, the PUCCH of msg4 is transmitted in the symbol corresponding to the valid symbol type, but not in the symbol corresponding to the invalid symbol type.

[0217] Option 3-1: The symbol type of the symbol in which the first transmission of msg4's PUCCH occurs is the valid symbol type of msg4's PUCCH.

[0218] For example, for a PUCCH with N (N > 0) repetitions of msg4, the symbol type (i.e., SBFD symbol or non-SBFD symbol) of the symbol containing the first repetition of msg4 is determined as the valid symbol type of msg4. Here, the slot position of the first repetition of msg4 and the symbol position (including the number of symbols and the symbol position) within that slot are indicated by the base station, for example, based on the DCI indication of scheduling msg4. All repetitions of msg4 can only be transmitted within the symbols corresponding to the valid symbol type of msg4 (not elaborated further below).

[0219] For a PUCCH without a repeating msg4, the symbol type of the symbol containing the msg4 PUCCH (i.e., SBFD symbol or non-SBFD symbol) is determined as the valid symbol type of the msg4 PUCCH. Here, the slot position where the first repetition of the msg4 PUCCH occurs, and the symbol position within that slot (including the number of symbols and the symbol position) are indicated by the base station, for example, based on the msg4 PUCCH indication.

[0220] The PUCCH of msg4 is transmitted in the symbol corresponding to the valid symbol type, and the transmission parameters associated with the PUCCH of msg4 using the valid symbol type (including but not limited to power control parameters, beam parameters, frequency hopping parameters, and PUCCH resources) will not be described in detail later.

[0221] Option 3-2: The valid symbol type of the PUCCH of msg4 is the same as the symbol type of the symbol containing msg1 and / or the symbol type of the symbol containing msg3.

[0222] For example, the base station and the UE agree that in the first transmission mode, the valid symbol type of the PUCCH of msg4 (including N (N greater than 0) repetitions) is the same as the symbol type of the symbol used by the UE to transmit msg1 or msg3.

[0223] Option 3-3: Valid symbol type for PUCCH of msg4 configured via RRC signaling.

[0224] For example, the base station and the UE agree that, for the UE (including idle / inactive UEs and connected UEs), the valid symbol type of msg4 PUCCH (including N repetitions) in the first transmission mode is configured in the BWP-UplinkCommon message, pucch-ResourceCommon message, or SIB1.

[0225] The base station and UE agree that the transmission mode of the PUCCH of msg4 (i.e., the first transmission mode or the second transmission mode) can be determined to follow the transmission mode of msg1 or msg3.

[0226] In some embodiments, the transmission mode is a first transmission mode, where the beam direction of the physical uplink control channel of msg4 is the same as the beam direction of msg1 or msg3 in the previous time slot. Here, the effective symbol type of the physical uplink control channel of msg4 is the same as the effective symbol type of msg1 or msg3.

[0227] In some embodiments, the transmission mode is a second transmission mode, and the beam direction of the physical uplink control channel of msg4 satisfies at least one of the following:

[0228] The beam direction of the physical uplink control channel of msg4 transmitted in the first symbol is the same as the beam direction of msg1 in the first symbol in the previous time slot;

[0229] The beam direction of the physical uplink control channel of msg4 transmitted in the first symbol is the same as the beam direction of msg3 in the first symbol in the previous time slot;

[0230] The beam direction of the physical uplink control channel of msg4 transmitted in the second symbol is the same as the beam direction of msg1 in the second symbol in the previous time slot; or

[0231] The beam direction of the physical uplink control channel of msg4 transmitted in the second symbol is the same as the beam direction of msg3 in the second symbol in the previous time slot.

[0232] In some examples, if the PUCCH for msg4 is determined (including by default) to use the first transmission mode, then the beam direction used for the PUCCH transmission of msg4 (including all repetitions) is the same as the beam direction used for the transmission of msg3 or msg1 in the previous slot. Here, the valid symbol type of msg3 or msg1 is the same as the valid symbol type determined for the PUCCH of msg4.

[0233] In some examples, in response to a base station notification to the UE, or by default between the base station and the UE, the uplink transmission of a UE uses the same beam in both SBFD and non-SBFD symbols. Therefore, the beam direction used for the PUCCH transmission of msg4 (including all repetitions) is the same as the beam direction used for the transmission of msg3 or msg1 in the previous slot. Here, the valid symbol type of msg3 or msg1 may be the same as or different from the valid symbol type determined for the PUCCH of msg4.

[0234] In some examples, the PUCCH in response to msg4 (including all repetitions) is determined (including the default) to use the second transmission mode. In this case, the beam direction used for the PUCCH transmission of msg4 in the SBFD symbol is the same as the beam direction used for the transmission of msg3 or msg1 in the previous slot in the SBFD symbol. The beam direction used for the PUCCH transmission of msg4 in the non-SBFD symbol is the same as the beam direction used for the transmission of msg3 or msg1 in the previous slot in the non-SBFD symbol.

[0235] In some examples, the PUCCH (including all repetitions) in response to msg4 is determined (including the default) to use the second transmission mode, and in response to the base station notifying the UE, or by default of the base station and the UE, the uplink transmission of a UE uses the same beam in both SBFD and non-SBFD symbols. In this case, the beam direction used by the PUCCH transmission of msg4 (including all repetitions) is the same as the beam direction used by the transmission of msg3 or msg1 in the previous slot. Here, the valid symbol type of msg3 or msg1 may be the same as or different from the valid symbol type determined by the PUCCH of msg4.

[0236] In some embodiments, the message is the physical uplink control channel of the second message (msgB) in a two-step random access procedure, and the transmission configuration parameters include:

[0237] The valid symbol type of PUCCH for msgB; or,

[0238] The beam direction of the PUCCH in msgB.

[0239] In some embodiments, the transmission mode is a first transmission mode, and the valid symbol type of the PUCCH of msgB is determined based on one of the following methods (Option 4-1, Option 4-2, and Option 4-3):

[0240] Option 4-1: The symbol type of the symbol in which the first transmission of msgB's PUCCH occurs is the valid symbol type of msgB's PUCCH.

[0241] For example, for a PUCCH with N (N > 0) repetitions or a msgB, the symbol type (i.e., SBFD symbol or non-SBFD symbol) of the symbol containing the first repetition of the msgB PUCCH is determined as the valid symbol type of the msgB PUCCH. Here, the slot position of the first repetition of the msgB PUCCH and the symbol position (including the number of symbols and the symbol position) within that slot are indicated by the base station, for example, based on the DCI indication of the scheduling msgB. All repetitions of the msgB PUCCH can only be transmitted within the symbols corresponding to the valid symbol type of the msgB PUCCH (this will not be elaborated further).

[0242] For a PUCCH without repeating msgB, the symbol type of the symbol containing the PUCCH of that msgB (i.e., SBFD symbol or non-SBFD symbol) is determined as the valid symbol type of the PUCCH of that msgB. Here, the slot position where the first repetition of the PUCCH of that msgB occurs, and the symbol position (including the number of symbols and the symbol position) within that slot, are indicated by the base station, for example, based on the PUCCH of the msgB.

[0243] The PUCCH of msgB is transmitted in the symbol corresponding to the valid symbol type, and the transmission parameters associated with the PUCCH of this msgB using the valid symbol type (including but not limited to power control parameters, beam parameters, frequency hopping parameters, and PUCCH resources) will not be described in detail later.

[0244] Option 4-2: The valid symbol type of the PUCCH of msgB is the same as the symbol type of the symbol containing msgA.

[0245] For example, the base station and the UE agree that in the first transmission mode, the valid symbol type of the PUCCH of msgB (including N (N greater than 0) repetitions) is the same as the symbol type of the symbol used by the UE to transmit msgA.

[0246] Option 4-3: Valid symbol type for PUCCH of msgB configured via RRC signaling.

[0247] For example, the base station and the UE agree that, for the UE (including idle / inactive UEs and connected UEs), the PUCCH (including those with N repetitions) configured in the BWP-UplinkCommon message, pucch-ResourceCommon message, or SIB1 or msgB is valid for the first transmission mode.

[0248] The base station and UE agree that the transmission mode of the PUCCH of msgB (i.e., the first transmission mode or the second transmission mode) can be determined to follow the transmission mode of msgA.

[0249] In some embodiments, the transmission mode is a first transmission mode, and the beam direction of the physical uplink control channel of msgB is the same as the beam direction of the first message (msgA) in the two-step random access process in the previous time slot.

[0250] Here, the effective symbol type of the physical uplink control channel is the same as the effective symbol type of msgA.

[0251] In some embodiments, the transmission mode is a second transmission mode, and the beam direction of the physical uplink control channel of msgB satisfies at least one of the following:

[0252] The beam direction of the physical uplink control channel of msgB transmitted in the first symbol is the same as the beam direction of msgA in the first symbol in the previous time slot; or,

[0253] The beam direction of the physical uplink control channel of msgB transmitted in the second symbol is the same as the beam direction of msgA in the second symbol in the previous time slot.

[0254] In some examples, if the PUCCH of msgB is determined (including by default) to use the first transmission mode, then the beam direction used for the PUCCH transmission of msgB (including all repetitions) is the same as the beam direction used for the transmission of msgA in the previous slot. Here, the valid symbol type of msgA is the same as the valid symbol type determined for the PUCCH of msgB.

[0255] In some examples, in response to a base station notification to the UE, or by default between the base station and the UE, if the uplink transmission of a UE uses the same beam in both SBFD and non-SBFD symbols, then the beam direction used for the PUCCH transmission of msgB (including all repetitions) is the same as the beam direction used for the transmission of msgA in the previous slot. Here, the valid symbol type of msgA may be the same as or different from the valid symbol type determined for the PUCCH of msgB.

[0256] In some examples, if the PUCCH (including all repetitions) in response to msgB is determined (including the default) to use the second transmission mode, then the beam direction used for the PUCCH transmission of msgB in the SBFD symbol is the same as the beam direction used for the transmission of msgA in the previous slot in the SBFD symbol, and the beam direction used for the PUCCH transmission of msgB in the non-SBFD symbol is the same as the beam direction used for the transmission of msg3 or msg1 in the previous slot in the non-SBFD symbol.

[0257] In some examples, the PUCCH (including all repetitions) in response to msgB is determined (including the default) to use configuration 2, and in response to the base station notifying the UE, or by default, the base station and UE agree that the uplink transmission of a UE uses the same beam in both SBFD and non-SBFD symbols. In this case, the beam direction used by the PUCCH transmission of msgB (including all repetitions) is the same as the beam direction used by the transmission of msgA in the previous slot. Here, the valid symbol type of msgA may or may not be the same as the valid symbol type determined by the PUCCH of msgB.

[0258] In S102, messages during the random access process are sent based on the transmission configuration parameters.

[0259] Based on this, during random access, the transmission mode corresponding to a message can be flexibly selected as either the first or second transmission mode to adapt to different message transmission requirements. The first transmission mode requires the use of the same type of symbol across different time slots, ensuring message consistency and reliability, and is particularly suitable for service scenarios requiring continuous and stable communication. The second transmission mode, on the other hand, allows the use of different types of symbols across different time slots, providing greater network adaptability and dynamic adjustment capabilities to meet the needs of diverse services. By flexibly adjusting the corresponding transmission configuration parameters based on the message transmission mode, users are provided with more efficient, stable, and flexible network access services, significantly improving the utilization efficiency of network resources, thereby achieving overall optimization of network transmission.

[0260] This disclosure provides a transmission configuration determination method applied to a second node. As shown in FIG6, the method includes the following steps S201.

[0261] In S201, messages are received during the random access process.

[0262] Here, the message transmission configuration parameters during random access are determined based on the message transmission mode during random access. The transmission modes include a first transmission mode and a second transmission mode. The first transmission mode requires the use of the same type of symbols to carry messages in different time slots, while the second transmission mode requires the use of different types of symbols to carry messages in different time slots.

[0263] Other relevant descriptions of S201 can be found in the above embodiments or examples, and will not be repeated here.

[0264] Understandably, an mgsA contains a PRACH and a PUSCH, which together form a complete msgA. However, after the SBFD symbol is configured, there are two types of symbols used for UL transmission in the system: one is the traditional UL symbol containing the UL BWP (i.e., a type of non-SBFD symbol), and the other is the SBFD symbol containing the UL subband. These two types of symbols have different transmission attributes. Therefore, the design of the new msgA is given below.

[0265] This disclosure provides a transmission configuration determination method applied to a first node. As shown in FIG7, the method includes the following steps S301.

[0266] In S301, the first node receives the configuration information of the first message in the two-step random access process. The first node determines the first message based on the configuration information. The first message is configured to include physical random access channel resources and physical uplink shared channel resources.

[0267] Here, the Physical Random Access Channel (PRACH) resource and the Physical Uplink Shared Channel (PUSCH) resource are configured to satisfy one of the following (Alt4-1 to Alt4-4):

[0268] Here, the first symbol includes the sub-band full-duplex symbol and the in-band full-duplex symbol, and the second symbol includes the non-sub-band full-duplex symbol and the non-in-band full-duplex symbol.

[0269] Alt4-1, the PRACH resource is configured in the first symbol, and the PUSCH resource is configured in the second symbol. In some embodiments, a PRACH resource in one SBFD symbol can be configured with multiple corresponding PUSCH resources. For example, there may be one PRACH resource and multiple PUSCH resources, such as two, where one PUSCH resource is configured in a non-SBFD symbol and the other in an SBFD symbol, or both PUSCH resources are configured in non-SBFD symbols. Alternatively, in some embodiments, there may be two PRACH resources and multiple PUSCH resources, such as two, where one PRACH resource is configured in a non-SBFD symbol and the other in an SBFD symbol, or both PUSCH resources are configured in SBFD symbols.

[0270] Alt4-2, the PRACH resource is configured in the second symbol, and the PUSCH resource is configured in the first symbol. In some embodiments, a PRACH resource in a non-SBFD symbol can be configured with multiple corresponding PUSCH resources. For example, there may be one PRACH resource and multiple PUSCH resources, such as two, where one PUSCH resource is configured in a non-SBFD symbol and the other in an SBFD symbol, or both PUSCH resources are configured in non-SBFD symbols. Alternatively, in some embodiments, there may be two PRACH resources and multiple PUSCH resources. For example, one PRACH resource is configured in a non-SBFD symbol and the other in an SBFD symbol, or both PUSCH resources are configured in SBFD symbols.

[0271] Alt4-3, the PRACH resource is configured in the second symbol, and the PUSCH resource is configured in the second symbol.

[0272] Alt4-4, the PRACH resource is configured in the first symbol, and the PUSCH resource is configured in the first symbol.

[0273] In some embodiments, a first message in a two-step random access process is sent to a second node; the physical random access channel resources of the first message and the physical uplink shared channel resources of the first message are configured in different types of symbols, and it is determined that the first node has the ability to transmit based on a second transmission mode, which requires the use of different types of symbols in different time slots to carry messages in the random access process.

[0274] In some embodiments, in response to the first message transmitted by the first node, the physical uplink control channels for the third message in the four-step random access process, the fourth message in the four-step random access process, and the physical uplink control channels for the second message in the two-step random access process are allowed to be transmitted based on the second transmission mode.

[0275] This disclosure provides a transmission configuration determination method applied to a second node. As shown in FIG8, the method includes the following steps S401.

[0276] In S401, the first message in the two-step random access process is configured, and the first message is configured to include physical random access channel resources and physical uplink shared channel resources.

[0277] Here, the Physical Random Access Channel (PRACH) resource and the Physical Uplink Shared Channel (PUSCH) resource are configured to satisfy one of the following (Alt4-1 to Alt4-4):

[0278] Here, the first symbol includes the sub-band full-duplex symbol and the in-band full-duplex symbol, and the second symbol includes the non-sub-band full-duplex symbol and the non-in-band full-duplex symbol.

[0279] Alt4-1, the PRACH resource is configured in the first symbol, and the PUSCH resource is configured in the second symbol. In some embodiments, a PRACH resource in one SBFD symbol can be configured with multiple corresponding PUSCH resources. For example, there may be one PRACH resource and multiple PUSCH resources, such as two, where one PUSCH resource is configured in a non-SBFD symbol and the other in an SBFD symbol, or both PUSCH resources are configured in non-SBFD symbols. Alternatively, in some embodiments, there may be two PRACH resources and multiple PUSCH resources. For example, one PRACH resource is configured in a non-SBFD symbol and the other in an SBFD symbol, or both PUSCH resources are configured in SBFD symbols.

[0280] Alt4-2, the PRACH resource is configured in the second symbol, and the PUSCH resource is configured in the first symbol. In some embodiments, a PRACH resource in a non-SBFD symbol can be configured with multiple corresponding PUSCH resources. For example, there may be one PRACH resource and multiple PUSCH resources, such as two, where one PUSCH resource is configured in a non-SBFD symbol and the other in an SBFD symbol, or both PUSCH resources are configured in non-SBFD symbols. Alternatively, in some embodiments, there may be two PRACH resources and multiple PUSCH resources. For example, one PRACH resource is configured in a non-SBFD symbol and the other in an SBFD symbol, or both PUSCH resources are configured in SBFD symbols.

[0281] Alt4-3, the PRACH resource is configured in the second symbol, and the PUSCH resource is configured in the second symbol.

[0282] Alt4-4, the PRACH resource is configured in the first symbol, and the PUSCH resource is configured in the first symbol.

[0283] In some embodiments, a first message in a two-step random access process sent by a first node is received; the physical random access channel resources of the first message and the physical uplink shared channel resources of the first message are configured in different types of symbols, and it is determined that the first node has the ability to transmit based on a second transmission mode, the second transmission mode requiring the use of different types of symbols in different time slots to carry messages in the random access process.

[0284] In some embodiments, once it is determined that the first node has the capability to transmit based on the second transmission mode, the second node is allowed to transmit the second message in the four-step random access process, the fourth message in the four-step random access process, and the second message in the two-step random access process based on the second transmission mode.

[0285] For example, the base station and the UE can agree to implicitly determine whether the UE has the capability to use the second transmission mode (or the first transmission mode) based on Alt4-1 to Alt4-4 mentioned above. For instance, if the UE transmits a msgA, and the PRACH and PUSCH resources for msgA are in different symbol types, then it is assumed that the UE has the capability to use the second transmission mode. In this way, the base station and the UE determine that the UE is allowed to transmit msg2 / msg3 / msg4 / msg4 PUCCH / msgB / msgB PUCCH based on the second transmission mode during the random access procedure.

[0286] For example, if a UE transmits a msgA, and both the PRACH and PUSCH resources for msgA are in SBFD symbols or both are in non-SBFD symbols, this does not mean that the UE lacks the ability to use the second transmission mode, because a UE capable of using the second transmission mode can choose the transmission mode for msgA. For example, the base station and a UE capable of using the second transmission mode may agree that the PUCCH for msg2 / msg3 / msg4 / msg4 and the PUCCH for msgB / msgB used by the UE during random access will all use the first transmission mode and the valid symbol type will be the same as the symbol containing msgA.

[0287] For a PUSCH resource associated with a msgA, it is configured in the Physical Uplink Shared Channel Configuration (MsgA-PUSCH-Config) of msgA. Since SBFD symbols have been introduced, and a PRACH resource and PUSCH resource of a msgA are associated with different symbol types, the relevant parameters for the PUSCH resource within the SBFD symbol should also be configured in MsgA-PUSCH-Config. In other words, MsgA-PUSCH-Config provides independent parameter configurations for the PUSCH resource within the SBFD symbol.

[0288] The foregoing mainly describes the solutions of the embodiments of this disclosure from a methodological perspective. The following also illustrates a transmission configuration determination apparatus for executing the transmission configuration determination method in any of the above embodiments and their possible implementations. It is understood that the transmission configuration determination apparatus, in order to implement the transmission configuration determination method, includes hardware structures and / or software modules corresponding to the execution of each function; those skilled in the art should readily recognize that, in conjunction with the algorithm steps of the various examples described in the embodiments of this disclosure, this disclosure 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 disclosure.

[0289] This disclosure embodiment can divide the transmission configuration determination device into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this disclosure embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each functional module according to each function.

[0290] Figure 9 illustrates a transmission configuration determination apparatus provided in an embodiment of this disclosure, applied to a first node. The transmission configuration determination apparatus 50 includes a processing module 51 and a communication module 52.

[0291] The processing module 51 is used to determine the message transmission configuration parameters during random access based on the message transmission mode during random access. Here, the transmission mode includes a first transmission mode and a second transmission mode. The first transmission mode requires the use of the same type of symbols to carry messages in different time slots, while the second transmission mode requires the use of different types of symbols to carry messages in different time slots.

[0292] The communication module 52 is used to send messages during the random access process based on the transmission configuration parameters.

[0293] In some embodiments, the type of symbol includes a first symbol and a second symbol, wherein the first symbol includes a sub-band full-duplex symbol and an in-band full-duplex symbol, and the second symbol includes a non-sub-band full-duplex symbol and a non-in-band full-duplex symbol.

[0294] In some embodiments, the message is the third message in a four-step random access process, and the transmission configuration parameters include at least one of the following:

[0295] Valid symbol types for the third message;

[0296] Valid symbol types for retransmitting third messages;

[0297] The power corresponding to the third message;

[0298] The power required to retransmit the third message; or,

[0299] The transmission slot for the third message.

[0300] In some embodiments, the communication module 52 is used to send a first message in a two-step random access process, wherein the resource configuration of the first message satisfies one of the following:

[0301] The PRACH resource of the first message is configured in the SBFD symbol, and the PUSCH resource of the first message is configured in the non-SBFD symbol.

[0302] The PRACH resource of the first message is configured in a non-SBFD symbol, and the PUSCH resource of the first message is configured in a non-SBFD symbol; or,

[0303] The PRACH resource of the first message is configured in the non-SBFD symbol, and the PUSCH resource of the first message is configured in the non-SBFD symbol.

[0304] In some embodiments, the communication module 52 is used to send a first message based on the transmission configuration parameters of the first message, wherein the transmission configuration parameters of the first message satisfy one of the following:

[0305] The physical random access channel resources of the first message are configured in the first symbol, and the physical uplink shared channel resources of the first message are configured in the second symbol.

[0306] The physical random access channel resources of the first message are configured in the second symbol, and the physical uplink shared channel resources of the first message are configured in the first symbol.

[0307] The physical random access channel resources of the first message are configured in the second symbol, and the physical uplink shared channel resources of the first message are configured in the second symbol; or,

[0308] The physical random access channel resources of the first message are configured in the first symbol, and the physical uplink shared channel resources of the first message are configured in the first symbol.

[0309] For a more detailed description of the processing module 51 and the communication module 52, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0310] Figure 10 illustrates another transmission configuration determination apparatus provided in an embodiment of this disclosure, applied to a second node. This transmission configuration determination apparatus 60 includes a communication module 61 and a processing module 62.

[0311] The communication module 61 is used to receive messages during the random access process. The transmission configuration parameters of the messages during the random access process are determined based on the transmission mode of the messages during the random access process. Here, the transmission mode includes a first transmission mode and a second transmission mode. The first transmission mode requires the use of the same type of symbols to carry messages in different time slots, while the second transmission mode requires the use of different types of symbols to carry messages in different time slots.

[0312] In some embodiments, the message in the random access procedure is the first message in a two-step random access procedure, and the transmission configuration parameters of the first message satisfy one of the following:

[0313] The physical random access channel resources of the first message are configured in the first symbol, and the physical uplink shared channel resources of the first message are configured in the second symbol.

[0314] The physical random access channel resources of the first message are configured in the second symbol, and the physical uplink shared channel resources of the first message are configured in the first symbol.

[0315] The physical random access channel resources of the first message are configured in the second symbol, and the physical uplink shared channel resources of the first message are configured in the second symbol; or,

[0316] The physical random access channel resources of the first message are configured in the first symbol, and the physical uplink shared channel resources of the first message are configured in the first symbol.

[0317] In some embodiments, the communication module 61 is used to receive a first message in a two-step random access process sent by the first node; the processing module 62 is used to determine whether the first node has the ability to use a second transmission mode based on the transmission configuration parameters of the first message.

[0318] In some embodiments, the processing module 62 is configured to determine that the first node has the capability to use the second transmission mode, since the physical random access channel resources of the first message and the physical uplink shared channel resources of the first message are configured in different types of symbols.

[0319] For a more detailed description of the communication module 61 and the processing module 62, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0320] Figure 11 illustrates a transmission configuration determination apparatus provided in an embodiment of this disclosure, applied to a first node. The transmission configuration determination apparatus 70 includes a communication module 71 and a determination module 72.

[0321] Here, the communication module 71 is used to receive the configuration information of the first message in the two-step random access process;

[0322] The determining module 72 determines the first message based on configuration information. Here, the first message is configured to include physical random access channel resources and physical uplink shared channel resources, and the physical random access channel resources and physical uplink shared channel resources are configured to satisfy one of the following:

[0323] Physical random access channel resources are configured in the first symbol, and physical uplink shared channel resources are configured in the second symbol;

[0324] Physical random access channel resources are configured in the second symbol, and physical uplink shared channel resources are configured in the first symbol;

[0325] Physical random access channel resources are configured in the second symbol, and physical uplink shared channel resources are configured in the second symbol; or,

[0326] Physical random access channel resources are configured in the first symbol, and physical uplink shared channel resources are configured in the first symbol;

[0327] Here, the first symbol includes the sub-band full-duplex symbol and the in-band full-duplex symbol, and the second symbol includes the non-sub-band full-duplex symbol and the non-in-band full-duplex symbol.

[0328] In some embodiments, the communication module 71 is used to send a first message in a two-step random access process to the second node; the determination module 72 is used to determine that the first node has the capability to transmit based on a second transmission mode, wherein the physical random access channel resources of the first message and the physical uplink shared channel resources of the first message are configured in different types of symbols, and the second transmission mode requires the use of different types of symbols in different time slots to carry messages in the random access process.

[0329] In some embodiments, the determining module 72 is further configured to respond to a first message transmitted by the first node, wherein the physical uplink control channels of the third message in the four-step random access process, the fourth message in the four-step random access process, and the physical uplink control channels of the second message in the two-step random access process are allowed to be transmitted based on a second transmission mode.

[0330] For a more detailed description of the communication module 71 and the determination module 72, as well as a more detailed description of their respective technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0331] Figure 12 illustrates a transmission configuration determination apparatus provided in an embodiment of this disclosure, applied to a second node. The transmission configuration determination apparatus 80 includes: a configuration module 81, a communication module 82, and a determination module 83.

[0332] Here, configuration module 81 is used to configure the first message in the two-step random access process. The first message is configured to include physical random access channel resources and physical uplink shared channel resources. The physical random access channel resources and physical uplink shared channel resources are configured to satisfy one of the following:

[0333] Physical random access channel resources are configured in the first symbol, and physical uplink shared channel resources are configured in the second symbol;

[0334] Physical random access channel resources are configured in the second symbol, and physical uplink shared channel resources are configured in the first symbol;

[0335] Physical random access channel resources are configured in the second symbol, and physical uplink shared channel resources are configured in the second symbol; or,

[0336] Physical random access channel resources are configured in the first symbol, and physical uplink shared channel resources are configured in the first symbol;

[0337] Here, the first symbol includes the sub-band full-duplex symbol and the in-band full-duplex symbol, and the second symbol includes the non-sub-band full-duplex symbol and the non-in-band full-duplex symbol.

[0338] In some embodiments, the communication module 82 is used to receive a first message in a two-step random access process sent by the first node; the determination module 83 is used to determine that the first node has the capability to transmit based on a second transmission mode, wherein the physical random access channel resources and the physical uplink shared channel resources of the first message are configured in different types of symbols, and the second transmission mode requires the use of different types of symbols in different time slots to carry messages in the random access process.

[0339] In some embodiments, the determining module 83 is further configured to determine that the first node has the capability to transmit based on the second transmission mode, and the second node is allowed to transmit the second message in the four-step random access process, the fourth message in the four-step random access process, and the second message in the two-step random access process based on the second transmission mode.

[0340] For a more detailed description of the configuration module 81, communication module 82, and determination module 83, as well as a more detailed description of each of their technical features and beneficial effects, please refer to the corresponding method embodiment section above, which will not be repeated here.

[0341] It should be noted that the modules in Figures 9, 10, 11, or 12 can also be referred to as units. For example, a communication module can be called a communication unit. Furthermore, in the embodiments shown in Figures 9, 10, 11, or 12, the names of the modules may not be those shown in the figures. For example, a communication module can also be called a transmitting module or a receiving module.

[0342] If the units or modules in Figures 9, 10, 11, or 12 are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this disclosure, or the parts that contribute to related technologies, or all or part of the technical solutions, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of the various embodiments of this disclosure. Storage media for storing computer software products include various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0343] In implementing the functions of the integrated modules described above in hardware, this disclosure also provides a structure for a communication device used to execute the transmission configuration determination method provided in this disclosure. As shown in FIG13, the communication device 900 includes: a communication interface 903, a processor 902, and a bus 904. In some embodiments, the communication device may further include a memory 901.

[0344] Processor 902 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 902 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with embodiments of this disclosure. Processor 902 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor (DSP), and a microprocessor.

[0345] The communication interface 903 is used to connect to other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0346] The memory 901 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), magnetic disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0347] In some embodiments, the memory 901 may exist independently of the processor 902. The memory 901 may be connected to the processor 902 via a bus 904 and may be used to store instructions or program code. When the processor 902 calls and executes the instructions or program code stored in the memory 901, it can implement the transfer configuration determination method provided in the embodiments of this disclosure.

[0348] In other embodiments, the memory 901 may also be integrated with the processor 902.

[0349] Bus 904 can be an extended industry standard architecture (EISA) bus, etc. Bus 904 can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in Figure 13, but this does not mean that there is only one bus or one type of bus.

[0350] Some embodiments of this disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium) storing computer program instructions that, when executed on a computer, cause the computer to perform the transmission configuration determination method as described above.

[0351] In some embodiments, the computer may be the transmission configuration determining device described above, and this disclosure does not limit the form of the computer.

[0352] In some examples, the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). The various computer-readable storage media described in this disclosure may represent one or more devices for storing information and / or other machine-readable storage media. The term "machine-readable storage media" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0353] This disclosure provides a computer program product containing instructions that, when run on a computer, cause the computer to execute the transmission configuration determination method described in any of the above embodiments.

[0354] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A method for determining a transmission configuration, wherein, Applied to the first node, the method includes: Based on the message transmission mode during random access, the message transmission configuration parameters during random access are determined; wherein, the transmission mode includes a first transmission mode and a second transmission mode, the first transmission mode requires the use of the same type of symbol to carry the message in different time slots, and the second transmission mode requires the use of different types of symbols to carry the message in different time slots; Based on the transmission configuration parameters, the messages in the random access process are sent.

2. The method according to claim 1, wherein, The types of symbols include a first symbol and a second symbol. The first symbol includes a sub-band full-duplex symbol and an in-band full-duplex symbol. The second symbol includes a non-sub-band full-duplex symbol and a non-in-band full-duplex symbol.

3. The method according to claim 2, wherein, The message is the third message in the four-step random access process, and the transmission configuration parameters include at least one of the following: The valid symbol type of the third message; Valid symbol type for retransmitting the third message; The power corresponding to the third message; The power corresponding to the retransmission of the third message; or, The transmission time slot of the third message.

4. The method according to claim 3, wherein, The transmission mode is the first transmission mode, and the valid symbol type of the third message is determined based on one of the following methods: The symbol type of the symbol in which the third message is first transmitted is the valid symbol type of the third message, wherein the first transmission includes the first repeated transmission of the third message; The first indication information indicates the valid symbol type of the third message, and the first indication information is carried in the random access response uplink grant (RAR UL grant). The valid symbol type of the third message is the same as the symbol type used in the first message during the four-step random access process.

5. The method according to claim 4, wherein, The first indication information is carried in the Random Access Response Uplink Grant (RAR UL grant) and includes at least one of the following: The first indication information is determined to request the CSI-request field based on the channel state information in the uplink grant of the random access response; The first indication information is determined based on the Physical Uplink Shared Channel Time Resource Allocation (PUSCH) field in the uplink grant of the random access response. The first indication information is determined based on the Physical Uplink Shared Channel (PUSCH) frequency resource allocation field in the uplink grant of the random access response; The first indication information is determined based on the Modulation-Coding System (MCS) field in the uplink grant of the random access response; or, The first indication information is determined based on the Transmission Power Control (TPC) command for PUSCH field of the Physical Uplink Shared Channel in the uplink grant of the random access response.

6. The method according to claim 3, wherein, The transmission mode is the first transmission mode, and the valid symbol type for retransmitting the third message is determined based on one of the following methods: The valid symbol type of the retransmitted third message is the same as the symbol type of the first message used in the four-step random access process; The second indication information indicates the valid symbol type for retransmitting the third message. The second indication information is carried in downlink control information scrambled by the temporary cell radio network temporary identifier TC_RNTI.

7. The method according to claim 6, wherein, The second indication information is carried in downlink control information scrambled by TC_RNTI, and includes at least one of the following: The second indication information is determined based on the New data indicator field in the downlink control information; The second indication information is determined based on the HARQ process number field in the downlink control information; The second indication information is determined based on a new field in the downlink control information, wherein the bits corresponding to the new field use a portion of the bits of the padding field; The second indication information is determined based on the Physical Uplink Shared Channel Time Resource Allocation (PUSCH) field in the downlink control information; The second indication information is determined based on the Physical Uplink Shared Channel (PUSCH) frequency resource allocation field in the downlink control information; The second indication information is determined based on the modulation and coding scheme (MCS) field in the downlink control information; or, The second indication information is determined based on the Transmission Power Control Command (TPC) for PUSCH field of the Physical Uplink Shared Channel in the downlink control information.

8. The method according to claim 3, wherein, The transmission mode is the first transmission mode, the third message is transmitted only in the symbols corresponding to the determined valid symbol type, and the power of the third message is determined based on the third indication information; Wherein, the third indication information satisfies at least one of the following: In response to the third message having a valid symbol type of the first symbol, the third indication information is parsed based on power control parameters / tables configured for the third message and associated with the first symbol; In response to the third message having a valid symbol type of the second symbol, the third indication information is parsed based on power control parameters / tables configured for the third message and associated with the second symbol; In response to the initial transmission of the third message, the third indication information is determined based on the Transmission Power Control Command (TPC) for PUSCH field in the RAR UL grant; or, In response to the retransmission of the third message, the third indication information is determined based on the Transmission Power Control Command (TPC) for PUSCH field in the Downlink Control Information.

9. The method according to claim 3, wherein, The transmission mode is the second transmission mode, the third message is transmitted simultaneously in the first symbol and the second symbol, and the power of the third message is determined based on the third indication information; The third message is transmitted in the target type symbol, and the third indication information is parsed based on the power control parameters / tables configured for the third message and associated with the target type symbol; or, In the third message transmitted in a non-target type symbol, the power of the third message is determined based on an offset and the third indication information parsed based on the power control parameters / table associated with the target type symbol; Wherein, the target type symbol is the first symbol, and the non-target type symbol is the second symbol; or, the non-target type symbol is the second symbol, and the target type symbol is the first symbol; In response to the initial transmission of the third message, the third indication information is determined based on the Transmission Power Control Command (TPC) for PUSCH field in the RAR UL grant; or, In response to the retransmission of the third message, the third indication information is determined based on the Transmission Power Control Command (TPC) for PUSCH field in the Downlink Control Information.

10. The method according to claim 9, wherein, The offset is determined based on at least one of the following: Radio Resource Control (RRC) signaling, the second message in the four-step random access process, and the Channel State Information Request (CSI) field in the Random Access Response Uplink Grant.

11. The method according to claim 1, wherein, The message is the third message in the four-step random access process. The transmission mode of the third message is determined based on fourth indication information. The fourth indication information is used to indicate that the transmission mode of the third message is the first transmission mode or the second transmission mode. The fourth indication information is determined based on RAR UL grant or downlink control information scrambled by TC_RNTI.

12. The method according to claim 11, wherein, The fourth indication information is determined based on RAR UL grant or downlink control information scrambled by TC_RNTI, including one of the following: The fourth indication information is determined to request the CSI-request field based on the channel state information in the RAR UL grant; The fourth indication information is determined based on the New data indicator field in the downlink control information; The fourth indication information is determined based on the HARQ process number field in the downlink control information. The fourth indication information is determined based on a new field in the downlink control information, wherein the bits corresponding to the new field use a portion of the bits of the padding field; The fourth indication information is determined based on the Physical Uplink Shared Channel Time Resource Allocation (PUSCH) field in the RAR UL grant or the downlink control information. The fourth indication information is determined based on the Physical Uplink Shared Channel Frequency Resource Allocation (PUSCH) field in the RAR UL grant or the downlink control information. The fourth indication information is determined based on the RAR UL grant or the modulation and coding scheme (MCS) field in the downlink control information; or... The fourth indication information is determined based on the Transmission Power Control Command (TPC) for PUSCH field of the Physical Uplink Shared Channel in the RAR UL grant or the downlink control information.

13. The method according to claim 7 or 12, wherein, The partial bit includes a partial bit that is 1 bit and is located in the second least significant bit of all the bits of the downlink control information.

14. The method according to claim 3, wherein, When the third message is a third message that is repeatedly sent N times, the transmission mode of the third message is the first transmission mode, and the valid symbol type of the third message is the second symbol, the transmission time slot of the third message is N time slots starting from the first time slot, where N is a positive integer; For each of the N time slots, the time slot satisfies at least one of the following: The symbol containing the third message within the time slot does not include the configured downlink symbol; The symbol containing the third message within the time slot does not include the symbol of the Synchronization Channel Block (SSB); or, The symbol containing the third message within the time slot does not include the configured first symbol; The downlink symbol is configured by the time-division duplex uplink / downlink configuration common parameter tdd-UL-DL-ConfigurationCommon, and the SSB is configured by the synchronization channel block position indication parameter ssb-PositionsInBurst.

15. The method according to claim 3, wherein, When the third message is a third message that is repeatedly sent N times, the transmission mode of the third message is the first transmission mode, and the valid symbol type of the third message is the first symbol, the transmission time slot of the third message is N time slots starting from the first time slot, where N is a positive integer; Wherein, for each of the N time slots, the symbol where the third message is located in the time slot is the configured first symbol, and the symbol where the third message is located in the time slot does not include the symbol of the SSB; The SSB is configured by the synchronization channel block position indication parameter ssb-PositionsInBurst.

16. The method according to claim 3, wherein, When the third message is a third message that is repeatedly sent N times, and the transmission mode of the third message is the second transmission mode, the transmission time slot of the third message is N time slots starting from the first time slot, where N is a positive integer; Wherein, for each of the N time slots, the symbol in which the third message is located within the time slot is the first symbol, the flexible symbol, or the uplink symbol, and the symbol in which the third message is located within the time slot does not include the SSB symbol; the SSB is configured by the synchronization channel block position indication parameter ssb-PositionsInBurst.

17. The method according to any one of claims 14-16, wherein, The first time slot is determined as follows: A = slot n + k2 + Δ + 2 μ ·K cell,offset Wherein, A is the first time slot, slot n is the time slot where the end of the physical uplink shared channel carrying the received Random Access Response (RAR) message is located, k2 is defined based on the subcarrier spacing used by the third message, is determined based on the time-domain resource allocation table of the third message, Δ is defined based on the subcarrier spacing used by the third message, and K... cell,offset The cell-specific offset is defined based on the parameter cellSpecificKoffset, where μ is the subcarrier spacing of the third message.

18. The method according to claim 2, wherein, The message is the first message in the two-step random access process, and the transmission configuration parameters include the transmission time slot of the first message.

19. The method according to claim 18, wherein, When the first message is a first message that is repeatedly sent N times, the transmission mode of the first message is the first transmission mode, and the valid symbol type of the first message is the second symbol, the transmission time slot of the first message is N time slots starting from the second time slot, where N is a positive integer; For each of the N time slots, the time slot satisfies at least one of the following: The symbol containing the first message within the time slot does not include the configured downlink symbol; The symbol containing the first message within the time slot does not contain a symbol of the SSB; or, The symbol containing the first message within the time slot does not include the configured first symbol; The downlink symbol is configured by the time-division duplex uplink / downlink configuration common parameter tdd-UL-DL-ConfigurationCommon, and the SSB is configured by the synchronization channel block position indication parameter ssb-PositionsInBurst.

20. The method according to claim 18, wherein, When the first message is a first message that is repeatedly sent N times, the transmission mode of the first message is the first transmission mode, and the valid symbol type of the first message is the first symbol, the transmission time slot of the first message is N time slots starting from the second time slot, where N is a positive integer; Wherein, for each of the N time slots, the symbol containing the first message in the time slot is the configured first symbol, and the symbol containing the first message in the time slot does not include the SSB symbol; The SSB is configured by the synchronization channel block position indication parameter ssb-PositionsInBurst.

21. The method according to claim 18, wherein when the first message is a first message that is repeatedly sent N times and the transmission mode of the first message is the second transmission mode, the transmission time slot of the first message is N time slots starting from the second time slot, where N is a positive integer; in, For each of the N time slots, the symbol containing the first message in the time slot is either the first symbol, a flexible symbol, or an uplink symbol, and the symbol containing the first message in the time slot does not include an SSB symbol; the SSB is configured by the synchronization channel block position indication parameter ssb-PositionsInBurst.

22. The method according to any one of claims 19-21, wherein, The second time slot is determined as follows: B = slot n + k2 + Δ + 2 μ ·K cell,offset Wherein, B is the second time slot, slot n is the time slot where the end of the physical uplink shared channel carrying the received Random Access Response (RAR) message is located, k2 is defined based on the subcarrier spacing used by the first message, is determined based on the time-domain resource allocation table of the first message, Δ is defined based on the subcarrier spacing used by the first message, and K... cell,offset The cell-specific offset is defined based on the parameter cellSpecificKoffset, where μ is the subcarrier spacing of the first message.

23. The method according to claim 2, wherein, The message is the physical uplink control channel of the fourth message in the four-step random access process, and the transmission configuration parameters include at least one of the following: The effective symbol type of the physical uplink control channel of the fourth message; or... The beam direction of the physical uplink control channel of the fourth message.

24. The method according to claim 23, wherein, The transmission mode is the first transmission mode, and the effective symbol type of the physical uplink control channel of the fourth message is determined based on one of the following methods: The symbol type of the symbol in which the first transmission of the physical uplink control channel of the fourth message is located is the valid symbol type of the physical uplink control channel of the fourth message. The effective symbol type of the physical uplink control channel of the fourth message is the same as the symbol type of the symbol containing the first message and / or the symbol type of the symbol containing the third message in the four-step random access process.

25. The method according to claim 23, wherein, The transmission mode is the first transmission mode, and the beam direction of the physical uplink control channel of the fourth message is the same as the beam direction of the first message in the four-step random access process in the previous time slot or the beam direction of the third message in the four-step random access process. The effective symbol type of the physical uplink control channel of the fourth message is the same as the effective symbol type of the first message or the third message.

26. The method according to claim 23, wherein, The transmission mode is the second transmission mode, and the beam direction of the physical uplink control channel of the fourth message satisfies at least one of the following: The beam direction of the physical uplink control channel of the fourth message transmitted in the first symbol is the same as the beam direction of the first message in the four-step random access process in the previous time slot within the first symbol. The beam direction of the physical uplink control channel of the fourth message transmitted in the first symbol is the same as the beam direction of the third message in the four-step random access process in the previous time slot within the first symbol. The beam direction of the physical uplink control channel of the fourth message transmitted in the second symbol is the same as the beam direction of the first message in the four-step random access process in the previous time slot within the second symbol; or, The beam direction of the physical uplink control channel of the fourth message transmitted in the second symbol is the same as the beam direction of the third message in the four-step random access process in the previous time slot within the second symbol.

27. The method according to claim 2, wherein, The message is the physical uplink control channel of the second message in the two-step random access process, and the transmission configuration parameters include: The valid symbol type of the physical uplink control channel of the second message; and The beam direction of the physical uplink control channel of the second message.

28. The method according to claim 27, wherein, The transmission mode is the first transmission mode, and the effective symbol type of the physical uplink control channel of the second message is determined based on one of the following methods: The symbol type of the symbol in which the first transmission of the physical uplink control channel of the second message is located is the valid symbol type of the physical uplink control channel of the second message; The valid symbol type of the physical uplink control channel of the second message is the same as the symbol type of the symbol containing the first message in the two-step random access process.

29. The method according to claim 27, wherein, The transmission mode is the first transmission mode, and the beam direction of the physical uplink control channel of the second message is the same as the beam direction of the first message in the two-step random access process in the previous time slot.

30. A method for determining a transmission configuration, wherein, Applied to the second node, the method includes: Receive messages during the random access process, wherein the transmission configuration parameters of the messages during the random access process are determined based on the transmission mode of the messages during the random access process; The transmission mode includes a first transmission mode and a second transmission mode. The first transmission mode requires the use of the same type of symbol to carry the message in different time slots, while the second transmission mode requires the use of different types of symbols to carry the message in different time slots.

31. A method for determining a transmission configuration, wherein, Applied to the first node, the method includes: The first node receives the configuration information of the first message in the two-step random access process; The first node determines the first message based on the configuration information, wherein the first message is configured to include physical random access channel resources and physical uplink shared channel resources, and the physical random access channel resources and the physical uplink shared channel resources are configured to satisfy one of the following: The physical random access channel resources are configured in the first symbol, and the physical uplink shared channel resources are configured in the second symbol; The physical random access channel resources are configured in the second symbol, and the physical uplink shared channel resources are configured in the first symbol; The physical random access channel resources are configured in the second symbol, and the physical uplink shared channel resources are configured in the second symbol; The physical random access channel resources are configured in the first symbol, and the physical uplink shared channel resources are configured in the first symbol; The first symbol includes a sub-band full-duplex symbol and an in-band full-duplex symbol, and the second symbol includes a non-sub-band full-duplex symbol and a non-in-band full-duplex symbol.

32. The method of claim 31, further comprising: Send the first message in the two-step random access process to the second node; The physical random access channel resources and the physical uplink shared channel resources of the first message are configured in different types of symbols, which determines that the first node has the ability to transmit based on the second transmission mode. The second transmission mode requires the use of different types of symbols in different time slots to carry messages in the random access process.

33. The method of claim 32, further comprising: In response to the first message transmitted by the first node, the physical uplink control channels for the third message in the four-step random access process, the fourth message in the four-step random access process, and the physical uplink control channels for the second message in the two-step random access process are allowed to be based on the second transmission mode.

34. A method for determining a transmission configuration, wherein, Applied to the second node, the method includes: The first message in the two-step random access process is configured to include physical random access channel resources and physical uplink shared channel resources, wherein the physical random access channel resources and the physical uplink shared channel resources are configured to satisfy one of the following: The physical random access channel resources are configured in the first symbol, and the physical uplink shared channel resources are configured in the second symbol; The physical random access channel resources are configured in the second symbol, and the physical uplink shared channel resources are configured in the first symbol; The physical random access channel resources are configured in the second symbol, and the physical uplink shared channel resources are configured in the second symbol; The physical random access channel resources are configured in the first symbol, and the physical uplink shared channel resources are configured in the first symbol; The first symbol includes a sub-band full-duplex symbol and an in-band full-duplex symbol, and the second symbol includes a non-sub-band full-duplex symbol and a non-in-band full-duplex symbol.

35. The method of claim 34, further comprising: Receive the first message in the two-step random access process sent by the first node; The physical random access channel resources and the physical uplink shared channel resources of the first message are configured in different types of symbols, which determines that the first node has the ability to transmit based on the second transmission mode. The second transmission mode requires the use of different types of symbols in different time slots to carry messages in the random access process.

36. The method of claim 35, further comprising: Once it is determined that the first node has the capability to transmit based on the second transmission mode, the second node is permitted to transmit the second message in the four-step random access process, the fourth message in the four-step random access process, and the second message in the two-step random access process based on the second transmission mode.

37. A communication device, comprising: Memory and processor; The memory and the processor are coupled; The memory is used to store instructions that can be executed by the processor; When the processor executes the instructions, it performs the method according to any one of claims 1 to 36.

38. A computer-readable storage medium, wherein, The computer-readable storage medium stores computer instructions that, when executed on a communication device, cause the communication device to perform the method according to any one of claims 1 to 36.

39. A computer program product, wherein, When the computer program product is executed, it implements the method according to any one of claims 1 to 36.

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