A method and apparatus used in a node for wireless communication

Abstract

The application discloses a method and device used in a node for wireless communication. A first transmitter transmits a first preamble in a first PRACH opportunity; a first receiver receives a first signaling, the first signaling adopts a first RNTI; wherein the first signaling is used to respond to the transmission of the first preamble; a first time domain symbol is the earliest time domain symbol occupied by the first PRACH opportunity in time domain; the index of a reference time domain symbol and the index of a reference time slot are both used to determine the first RNTI, the reference time domain symbol is a time domain symbol other than the first time domain symbol, and the reference time domain symbol belongs to the reference time slot; the time domain position of the reference time domain symbol is related to at least one of the first PRACH opportunity or the first preamble.

Description

Technical Field

[0001] This application relates to transmission methods and apparatus in wireless communication systems, and more particularly to methods and apparatus for transmitting wireless signals in wireless communication systems supporting cellular networks. Background Technology

[0002] Random access is a crucial aspect of uplink (UL) transmission; enhancing the PRACH (Physical Random Access Channel) is an important topic in improving uplink coverage. Determining the appropriate configuration for random access after employing PRACH-based coverage enhancement techniques is a critical issue that must be addressed. Summary of the Invention

[0003] To address the aforementioned issues, this application discloses a solution. It should be noted that the above description uses the uplink in a cellular network as an example; this application is also applicable to other scenarios, such as IoT (Internet of Things), vehicle-to-everything (V2X) networks, and NTN (non-terrestrial networks), achieving similar technical effects. Furthermore, adopting a unified solution across different scenarios (including but not limited to cellular networks, IoT, V2X, and NTN) can help reduce hardware complexity and cost, or improve performance. Unless otherwise specified, embodiments and features in any node of this application can be applied to any other node. Unless otherwise specified, embodiments and features in any embodiment of this application can be arbitrarily combined with each other.

[0004] As an example, the interpretation of the terminology in this application is based on the definition in the 3GPP specification protocol TS36 series.

[0005] As an example, the interpretation of terms in this application is based on the definitions in the 3GPP specification protocol TS38 series.

[0006] As an example, the interpretation of terms in this application is based on the definitions in the 3GPP specification protocol TS37 series.

[0007] As an example, the interpretation of terms in this application is based on the definitions in the IEEE (Institute of Electrical and Electronics Engineers) specification protocols.

[0008] This application discloses a method used in a first node of wireless communication, characterized by comprising:

[0009] Send the first preamble during the first PRACH opportunity;

[0010] Receive the first signaling, which uses the first RNTI;

[0011] Wherein, the first signaling is used in response to the transmission of the first preamble; the first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; the index of the reference time-domain symbol and the index of the reference time slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, the reference time-domain symbol belongs to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble.

[0012] As an example, the advantages of the above method include: it facilitates the enhancement of uplink coverage performance.

[0013] As an example, the advantages of the above method include: improved flexibility in base station configuration, which is conducive to improving the overall system performance.

[0014] As an example, the advantages of the above method include: avoiding ambiguity in the understanding of RAR-related configurations between the communicating parties.

[0015] As an example, the advantages of the above method include: it facilitates the full utilization of RNTI resources.

[0016] As an example, the advantages of the above method include: improved uplink transmission performance or resource utilization.

[0017] According to one aspect of this application, the above method is characterized in that,

[0018] The reference time-domain symbol is the earliest time-domain symbol occupied by the first reference PRACH opportunity in the time domain, and the time-domain resources occupied by the first PRACH opportunity are later than the time-domain resources occupied by the first reference PRACH opportunity.

[0019] According to one aspect of this application, the above method is characterized in that,

[0020] The first PRACH opportunity and the first reference PRACH opportunity are both associated with the same SS / PBCH block index.

[0021] According to one aspect of this application, the above method is characterized in that,

[0022] The first PRACH opportunity and the first reference PRACH opportunity are associated with different SS / PBCH block indices.

[0023] According to one aspect of this application, the above method is characterized in that,

[0024] The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

[0025] As an example, the advantages of the above method include: supporting the initiation of the RAR time window after multiple repeated transmissions of PRACH, which improves the transmission performance of PRACH while ensuring the consistency of the communication parties' understanding of the RAR time window.

[0026] As an example, the advantages of the above method include: increased configuration flexibility.

[0027] As an example, the advantages of the above method include: it facilitates the selection of an appropriate trade-off between the transmission reliability of PRACH and the delay of random access.

[0028] As an example, the advantages of the above method include: it helps to reduce the latency of random access.

[0029] As an example, the advantages of the above method include: avoiding unnecessary missed detections of RARs.

[0030] According to one aspect of this application, the above method is characterized by comprising:

[0031] Receive the first message;

[0032] The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

[0033] According to one aspect of this application, the above method is characterized in that,

[0034] The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

[0035] As an example, the advantages of the above method include: enhanced PRACH transmission performance.

[0036] This application discloses a method used in a second node for wireless communication, characterized by comprising:

[0037] Receive the first preamble during the first PRACH opportunity;

[0038] Send the first signaling, which uses the first RNTI;

[0039] Wherein, the first signaling is used in response to the transmission of the first preamble; the first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; the index of the reference time-domain symbol and the index of the reference time slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, the reference time-domain symbol belongs to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble.

[0040] According to one aspect of this application, the above method is characterized in that,

[0041] The reference time-domain symbol is the earliest time-domain symbol occupied by the first reference PRACH opportunity in the time domain, and the time-domain resources occupied by the first PRACH opportunity are later than the time-domain resources occupied by the first reference PRACH opportunity.

[0042] According to one aspect of this application, the above method is characterized in that,

[0043] The first PRACH opportunity and the first reference PRACH opportunity are both associated with the same SS / PBCH block index.

[0044] According to one aspect of this application, the above method is characterized in that,

[0045] The first PRACH opportunity and the first reference PRACH opportunity are associated with different SS / PBCH block indices.

[0046] According to one aspect of this application, the above method is characterized in that,

[0047] The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is sent in the first time window.

[0048] According to one aspect of this application, the above method is characterized by comprising:

[0049] Send the first message;

[0050] The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

[0051] According to one aspect of this application, the above method is characterized in that,

[0052] The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

[0053] This application discloses a first node used for wireless communication, characterized in that it comprises:

[0054] The first transmitter sends the first preamble during the first PRACH opportunity;

[0055] A first receiver receives a first signaling message, wherein the first signaling message uses a first RNTI.

[0056] Wherein, the first signaling is used in response to the transmission of the first preamble; the first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; the index of the reference time-domain symbol and the index of the reference time slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, the reference time-domain symbol belongs to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble.

[0057] This application discloses a second node used for wireless communication, characterized in that it comprises:

[0058] The second receiver receives the first preamble during the first PRACH opportunity;

[0059] The second transmitter sends the first signaling, which uses the first RNTI.

[0060] Wherein, the first signaling is used in response to the transmission of the first preamble; the first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; the index of the reference time-domain symbol and the index of the reference time slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, the reference time-domain symbol belongs to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble.

[0061] As an example, the method in this application has the following advantages:

[0062] - Enhanced uplink transmission performance;

[0063] - Improved the flexibility of base station scheduling;

[0064] - Improved spectral efficiency;

[0065] - This avoids ambiguity in understanding RAR-related configurations between the communicating parties;

[0066] - It is conducive to the full utilization of RNTI resources. Attached Figure Description

[0067] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0068] Figure 1 A flowchart illustrating the processing of a first node according to an embodiment of this application is shown;

[0069] Figure 2A schematic diagram of a network architecture according to an embodiment of this application is shown;

[0070] Figure 3 A schematic diagram of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application is shown;

[0071] Figure 4 A schematic diagram of a first communication device and a second communication device according to an embodiment of this application is shown;

[0072] Figure 5 A signal transmission flowchart according to an embodiment of this application is shown;

[0073] Figure 6 A schematic diagram illustrating the relationship between a first PRACH opportunity and a first PRACH opportunity group according to an embodiment of this application is shown;

[0074] Figure 7 A schematic diagram illustrating a first RNTI according to an embodiment of this application is shown;

[0075] Figure 8 A schematic diagram illustrating the relationship between a second reference PRACH opportunity, a first reference PRACH opportunity, a first time window, and a first preamble according to an embodiment of this application is shown.

[0076] Figure 9 A schematic diagram illustrating the use of a second reference PRACH opportunity to determine a first time window according to an embodiment of this application is shown.

[0077] Figure 10 A schematic diagram illustrating the relationship between a first node, first information, a first PRACH opportunity, a first PRACH opportunity group, and a first PRACH opportunity pool according to an embodiment of this application is shown.

[0078] Figure 11 A schematic diagram illustrating the relationship between first information, a first PRACH opportunity group, multiple PRACH opportunity groups, and a first PRACH opportunity pool according to an embodiment of this application is shown.

[0079] Figure 12 A structural block diagram of a processing apparatus in a first node device according to an embodiment of this application is shown;

[0080] Figure 13 A structural block diagram of a processing apparatus in a second node device according to an embodiment of this application is shown. Detailed Implementation

[0081] The technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0082] Example 1

[0083] Example 1 illustrates a processing flowchart of the first node according to an embodiment of this application, as shown in the attached diagram. Figure 1 As shown.

[0084] In Embodiment 1, the first node in this application sends a first preamble in the first PRACH opportunity in step 101 and receives a first signaling in step 102.

[0085] In Embodiment 1, the first signaling employs a first RNTI; the first signaling is used to respond to the transmission of the first preamble; the first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; the index of the reference time-domain symbol and the index of the reference time slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, and the reference time-domain symbol belongs to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble.

[0086] As an example, the first PRACH opportunity is a PRACH occasion.

[0087] As an example, a PRACH opportunity in this application includes time-frequency resources used to transmit a preamble.

[0088] As an example, one PRACH opportunity in this application is reserved for the transmission of the preamble.

[0089] As an example, a PRACH opportunity in this application is reserved for the transmission of the preamble or a single repetition of the preamble.

[0090] As an example, one PRACH opportunity in this application is reserved for the transmission of PRACH.

[0091] As an example, a PRACH opportunity in this application is reserved for the transmission of a PRACH or a repeated transmission of a PRACH.

[0092] As an example, a PRACH opportunity in this application occupies a positive integer number of time-domain symbols in the time domain.

[0093] As an example, a PRACH opportunity in this application may occupy a positive integer number of sub-carriers in the frequency domain.

[0094] As an example, the first preamble is a preamble.

[0095] As an example, the first preamble is a preamble sequence.

[0096] As an example, the Zhadoff-Chu sequence was used to generate the first preamble.

[0097] As an example, the first preamble is a preamble used for random access.

[0098] As an example, the first preamble is used to carry Msg1.

[0099] As an example, the first preamble adopts a short preamble format.

[0100] As an example, the first preamble adopts one of preamble format 0, preamble format 1, preamble format 2, and preamble format 3.

[0101] As an example, the first preamble adopts one of the preamble format A1, preamble format A2, and preamble format A3.

[0102] As an example, the first preamble adopts one of the preamble format B1, preamble format B2, preamble format B3, and preamble format B4.

[0103] As an example, the first preamble adopts one of preamble format C0 and preamble format C2.

[0104] As an example, the sequence length of the first preamble is 839.

[0105] As an example, the sequence length of the first preamble is 139.

[0106] As an example, the sequence length of the first preamble is 571.

[0107] As an example, the sequence length of the first preamble is 1151.

[0108] As an example, the SCS (Subcarrier Spacing) corresponding to the first preamble is 1.25 kHz.

[0109] As an example, the SCS corresponding to the first preamble is 5kHz.

[0110] As an example, the SCS corresponding to the first preamble is 15kHz.

[0111] As an example, the SCS corresponding to the first preamble is 30kHz.

[0112] As an example, the SCS corresponding to the first preamble is 60kHz.

[0113] As an example, the SCS corresponding to the first preamble is 120kHz.

[0114] As an example, the first PRACH opportunity is configured with higher layer signaling.

[0115] As an example, the first PRACH opportunity is configured with RRC signaling.

[0116] As an example, the first PRACH opportunity is configured in the information element RACH-ConfigCommon.

[0117] As an example, the first PRACH opportunity is configured in the information element RACH-ConfigDedicated.

[0118] As an example, the first PRACH opportunity is configured in the information element RACH-ConfigGeneric.

[0119] As an example, the first PRACH opportunity is configured in an information element whose name includes RACH.

[0120] As an example, the first PRACH opportunity is configured by a SIB (System Information Block) message.

[0121] As an example, the first PRACH opportunity is configured with SIB1.

[0122] As an example, the first PRACH opportunity is predefined.

[0123] As an example, the first signaling is a DCI.

[0124] As an example, the first signaling is DCI format 1_0.

[0125] As an example, the first signaling is used to schedule PDSCH.

[0126] As an example, the CRC (Cyclic redundancy check) bits of the first signaling are scrambled by the first RNTI.

[0127] As one embodiment, the first signaling includes a RARUL grant to the physical layer.

[0128] As one example, the first signaling includes MAC RAR.

[0129] As an example, the first signaling belongs to a MAC PDU.

[0130] As one example, the first signaling includes at least one bit.

[0131] As an example, the first signaling is represented by at least one bit.

[0132] As an example, the first signaling is physical layer signaling.

[0133] As an example, the first signaling is in DCI (Downlink control information) format.

[0134] As an example, the first signaling is a DCI signaling.

[0135] As an example, the first signaling is DCI format 1_0.

[0136] As an example, the first signaling is DCI format 0_0, and the specific definition of DCI format 0_0 can be found in section 7.3.1.1 of 3GPP TS38.212.

[0137] As an example, the first signaling is DCI format 0_1, and the specific definition of DCI format 0_1 ​​can be found in section 7.3.1.1 of 3GPP TS38.212.

[0138] As an example, the first signaling is DCI format 0_2, and the specific definition of DCI format 0_2 can be found in section 7.3.1.1 of 3GPP TS38.212.

[0139] As an example, the first signaling is DCI format 1_0, and the specific definition of DCI format 1_0 can be found in section 7.3.1.2 of 3GPP TS38.212.

[0140] As an example, the first signaling is DCI format 1_1, and the specific definition of DCI format 1_1 can be found in section 7.3.1.2 of 3GPP TS38.212.

[0141] As an example, the first signaling is DCI format 1_2, and the specific definition of DCI format 1_2 can be found in section 7.3.1.2 of 3GPP TS38.212.

[0142] As one example, the first signaling includes one or more fields in a DCI format.

[0143] As an example, the first signaling is an uplink grant signaling.

[0144] As an example, the first signaling is a downlink grant signaling.

[0145] As one example, the first signaling is higher layer signaling.

[0146] As an example, the first signaling is RRC signaling.

[0147] As an example, the first signaling includes one or more fields in an RRC signaling.

[0148] As an example, the first signaling includes an IE (Information Element).

[0149] As one example, the first signaling includes one or more domains in an IE.

[0150] As an example, the first signaling is MAC CE (Medium Access Control layer Control Element).

[0151] As an example, the first signaling includes one or more fields in a MAC CE.

[0152] As an example, the first signaling belongs to a MAC CE.

[0153] As an example, the statement "transmit the first preamble in the first PRACH opportunity" includes: transmitting the first preamble in the time-frequency resources occupied by the first PRACH opportunity.

[0154] As an example, the statement "transmit the first preamble in the first PRACH opportunity" includes: using the first PRACH opportunity to transmit the first preamble.

[0155] As an example, the first RNTI is an RNTI (Radio Network Temporary Identifier) ​​used for random access.

[0156] As an example, the first RNTI is a RA-RNTI.

[0157] As an example, the first RNTI is MsgB-RNTI.

[0158] As an example, the statement "the first signaling uses a first RNTI" includes: the first RNTI is used to scramble the first signaling.

[0159] As an example, the statement "the first signaling adopts the first RNTI" includes: the CRC of the first signaling is scrambled by the first RNTI.

[0160] As an example, the first signaling is DCI format 1_0, the CRC of the first signaling is scrambled by the first RNTI, and the first RNTI is RA-RNTI.

[0161] As an example, the statement "the first signaling uses the first RNTI" includes: a PDSCH scheduled by a DCI format whose CRC is scrambled by the first RNTI is used to carry the first signaling.

[0162] As an example, the statement "the first signaling is used in response to the transmission of the first preamble" includes: the first signaling includes a RAR for the first preamble.

[0163] As an example, the statement "the first signaling is used in response to the transmission of the first preamble" includes: the first signaling includes the RAPID corresponding to the first preamble and the RAR uplink grant (random access response (RAR) UL grant) to the physical layer.

[0164] As an example, the statement "the first signaling is used in response to the transmission of the first preamble" includes: the first signaling is used to schedule the PDSCH carrying at least the RAR for the first preamble.

[0165] As an example, the statement "the first signaling is used in response to the transmission of the first preamble" includes: the first signaling is used to schedule a PDSCH carrying at least the RAPID corresponding to the first preamble and the RAR uplink grant (UL grant) to the physical layer.

[0166] As an example, the first signaling is used to schedule the PDSCH carrying at least the RAPID and MAC RAR corresponding to the first preamble.

[0167] As an example, the statement "the first signaling is used in response to the transmission of the first preamble" includes: the LSBs of SFN fields included in the first signaling are the same as the corresponding least significant bits (LSBs) of the SFN to which the transmission of the first preamble belongs in the time domain; a transport block in the PDSCH scheduled by the first signaling is received in a first time window; and the RAPID (random access preamble identity / identifier) ​​corresponding to the first preamble is parsed after the transport block is passed to higher layers; the first time window is a RAR (Random access response) time window for the first preamble.

[0168] As an example, the RAR time window is a time window used to monitor random access responses.

[0169] As one embodiment, the first time-domain symbol includes contiguous time-domain resources.

[0170] As an example, the time-domain symbols in this application include continuous time-domain resources.

[0171] As an example, the time-domain symbol described in this application is a multi-carrier symbol.

[0172] As an example, the time-domain symbol in this application is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0173] As an example, the time-domain symbol in this application is an SC-FDMA (Single Carrier-Frequency Division Multiple Access) symbol.

[0174] As an example, the time-domain symbol in this application is a DFT-S-OFDM (Discrete Fourier Transform Spread OFDM) symbol.

[0175] As an example, the time-domain symbol in this application is an FBMC (Filter Bank Multi Carrier) symbol.

[0176] As an example, the time-domain notation described in this application is for a 15kHz parameter set (numerology).

[0177] As an example, the time-domain notation described in this application is for a 30kHz parameter set (numerology).

[0178] As an example, the time-domain notation described in this application is for a 60kHz parameter set (numerology).

[0179] As an example, the time-domain notation described in this application is for a 120kHz parameter set (numerology).

[0180] As an example, the index of the time-domain symbol in this application is a non-negative integer.

[0181] As an example, the index of a time-domain symbol in this application refers to the index of the time-domain symbol in its corresponding time slot.

[0182] As an example, the index of the time-domain symbol in this application ranges from 0 to 13.

[0183] As an example, the index of the time slot in this application is a non-negative integer.

[0184] As an example, the index of a time slot in this application refers to the index of that time slot in the system frame to which it belongs.

[0185] As an example, the index of the time slot in this application ranges from 0 to 79.

[0186] As an example, the first time slot is the time slot to which the first time domain symbol belongs, and the reference time slot is not the first time slot.

[0187] As one example, the reference time slot precedes the first time slot.

[0188] As one embodiment, the reference time slot is after the first time slot.

[0189] As an example, a time slot in this application includes multiple time-domain symbols.

[0190] As an example, the first RNTI is linearly correlated with the index of the reference time-domain symbol.

[0191] As an example, the first RNTI is linearly correlated with the index of the reference time slot.

[0192] As an example, the index of the reference time domain symbol and the index of the reference time slot together indicate the first RNTI.

[0193] As an example, the index of the reference time domain symbol and the index of the reference time slot are both used to calculate the first RNTI.

[0194] As an example, the first RNTI is equal to the sum of a plurality of addends, one of which is equal to the index of the reference time domain symbol, and another of the plurality of addends is equal to 14 multiplied by the index of the reference time slot.

[0195] As an example, the first RNTI = 1 + s + 14 × t; where s represents the index of the reference time domain symbol and t represents the index of the reference time slot.

[0196] As an example, the first RNTI = 1 + s + 7 × t; where s represents the index of the reference time domain symbol and t represents the index of the reference time slot.

[0197] As an example, the first RNTI = max(s,t); where s represents the index of the reference time-domain symbol and t represents the index of the reference time slot.

[0198] As an example, the reference time-domain symbol precedes the first time-domain symbol.

[0199] As an example, the reference time-domain symbol follows the first time-domain symbol.

[0200] As an example, the reference time-domain symbol is the time-domain symbol used to transmit the first preamble.

[0201] As an example, the reference time-domain symbol is the earliest time-domain symbol used to transmit the first preamble.

[0202] As an example, the reference time-domain symbol follows the latest time-domain symbol occupied by the first PRACH opportunity in the time domain.

[0203] As an example, the statement "the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble" includes: the reference time-domain symbol precedes the first time-domain symbol.

[0204] As an example, the reference time-domain symbol is the earliest time-domain symbol occupied by the first reference PRACH opportunity in the time domain, and the first PRACH opportunity and the first reference PRACH do not overlap in the time domain.

[0205] As an example, the reference time-domain symbol is the earliest time-domain symbol occupied by the first reference PRACH opportunity in the time domain, and the time-domain resources occupied by the first PRACH opportunity are earlier than the time-domain resources occupied by the first reference PRACH opportunity.

[0206] Example 2

[0207] Example 2 illustrates a schematic diagram of a network architecture according to this application, as shown in the attached diagram. Figure 2 As shown.

[0208] Appendix Figure 2A diagram illustrating the network architecture 200 of 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems is provided. The 5G NR or LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200 or some other suitable term. EPS 200 may include one or more UE (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, EPC (Evolved Packet Core) / 5G-CN (5G-Core Network) 210, HSS (Home Subscriber Server) 220, and Internet service 230. EPS may interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown in the diagram, EPS provides packet-switched services; however, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol termination to UE 201. gNB 203 can connect to other gNBs 204 via the Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Service Set (BSS), Extended Service Set (ESS), TRP (Transmitter Receiver Node), or some other suitable term. gNB 203 provides UE 201 with access to EPC / 5G-CN 210. Examples of UE201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. gNB203 connects to EPC / 5G-CN 210 via the S1 / NG interface.The EPC / 5G-CN 210 includes the MME (Mobility Management Entity), AMF (Authentication Management Field), and UPF (User Plane Function) 211, other MMEs, AMFs, and UPFs 214, the S-GW (Service Gateway) 212, and the P-GW (Packet Data Network Gateway) 213. The MME / AMF / UPF 211 is the control node that handles signaling between the UE 201 and the EPC / 5G-CN 210. Generally, the MME / AMF / UPF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW 212, which is itself connected to the P-GW 213. The P-GW 213 provides UE IP address allocation and other functions. The P-GW 213 is connected to the Internet service 230. Internet services 230 include operator-compliant Internet protocol services, which may specifically include the Internet, intranets, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0209] As an example, the UE201 corresponds to the first node in this application.

[0210] As an example, the UE201 corresponds to the second node in this application.

[0211] As an example, gNB203 corresponds to the first node in this application.

[0212] As an example, gNB203 corresponds to the second node in this application.

[0213] As an example, UE201 corresponds to the first node in this application, and gNB203 corresponds to the second node in this application.

[0214] As an example, the gNB203 is a macrocell base station.

[0215] As an example, the gNB203 is a microcell base station.

[0216] As an example, the gNB203 is a PicoCell base station.

[0217] As an example, the gNB203 is a femtocell.

[0218] As an example, the gNB203 is a base station device that supports large latency differences.

[0219] As one example, the gNB203 is a flight platform device.

[0220] As an example, the gNB203 is a satellite device.

[0221] As an example, the first node and the second node in this application both correspond to the UE201, for example, V2X communication is performed between the first node and the second node.

[0222] Example 3

[0223] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for a user plane and a control plane according to this application, as shown in the attached diagram. Figure 3 As shown. Figure 3 This is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300. Figure 3The radio protocol architecture for the control plane 300 between the first communication node device (UE, gNB, or RSU in V2X) and the second communication node device (gNB, UE, or RSU in V2X), or between two UEs, is illustrated using three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (Physical Layer) signal processing functions. L1 layer will be referred to herein as PHY301. Layer 2 (L2 layer) 305 sits above PHY301 and is responsible for the link between the first and second communication node devices and between the two UEs via PHY301. L2 layer 305 includes a MAC (Medium Access Control) sublayer 302, an RLC (Radio Link Control) sublayer 303, and a PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. PDCP sublayer 304 also provides security through encrypted data packets and supports cross-cell mobility between second communication node devices and the first communication node device. RLC sublayer 303 provides upper layer data packet segmentation and reassembly, retransmission of lost data packets, and data packet reordering to compensate for out-of-order reception due to HARQ. MAC sublayer 302 provides multiplexing between the logical and transport channels. MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell between the first communication node devices. MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for acquiring radio resources (i.e., radio bearers) and configuring the lower layer using RRC signaling between the second and first communication node devices. The radio protocol architecture of user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for the first and second communication node devices in user plane 350 is largely the same as the corresponding layers and sublayers in control plane 300 for physical layer 351, PDCP sublayer 354 in L2 layer 355, RLC sublayer 353 in L2 layer 355 and MAC sublayer 352 in L2 layer 355. However, PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping between QoS streams and data radio bearers (DRBs) to support service diversity. Although not illustrated, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., a remote UE, server, etc.).

[0224] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the first node in this application.

[0225] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the second node in this application.

[0226] As an example, the first information in this application is generated in the RRC sublayer 306.

[0227] As an example, the first information in this application is generated in the MAC sublayer 302.

[0228] As an example, the first information in this application is generated in the MAC sublayer 352.

[0229] As an example, the first information in this application is generated in the PHY301.

[0230] As an example, the first information in this application is generated in the PHY351.

[0231] As an example, the first signaling in this application is generated in the RRC sublayer 306.

[0232] As an example, the first signaling in this application is generated in the MAC sublayer 302.

[0233] As an example, the first signaling in this application is generated in the MAC sublayer 352.

[0234] As an example, the first signaling in this application is generated in the PHY301.

[0235] As an example, the first signaling in this application is generated in the PHY351.

[0236] As an example, the first preamble in this application is generated in the PHY301.

[0237] As an example, the first preamble in this application is generated in the PHY351.

[0238] Example 4

[0239] Example 4 shows schematic diagrams of a first communication device and a second communication device according to this application, as shown in the appendix. Figure 4 As shown. Figure 4 This is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0240] The first communication device 410 includes a controller / processor 475, a memory 476, a receiver processor 470, a transmitter processor 416, a multi-antenna receiver processor 472, a multi-antenna transmitter processor 471, a transmitter / receiver 418, and an antenna 420.

[0241] The second communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmitting processor 468, a receiving processor 456, a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0242] In the transmission from the first communication device 410 to the second communication device 450, at the first communication device 410, upper-layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements L2 layer functionality. In the transmission from the first communication device 410 to the second communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the second communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmitting lost packets and signaling to the second communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). Transmit processor 416 performs encoding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, and mapping of signal clusters based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-Phase Shift Keying (M-PSK), M-QAM). Multi-antenna transmit processor 471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based and non-codebook-based precoding, and beamforming processing, generating one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes it with a reference signal (e.g., a pilot) in the time and / or frequency domains, and subsequently uses inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multicarrier symbol stream. Multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmitter processor 471 into an radio frequency stream, which is then provided to different antennas 420.

[0243] In the transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream, which is then provided to the receiver processor 456. The receiver processor 456 and the multi-antenna receiver processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiver processor 458 performs receive analog precoding / beamforming operations on the baseband multicarrier symbol stream from the receiver 454. The receiver processor 456 uses a Fast Fourier Transform (FFT) to convert the baseband multicarrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiver processor 456, where the reference signal is used for channel estimation, and the data signal is recovered in the multi-antenna receiver processor 458 after multi-antenna detection to recover any spatial stream destined for the second communication device 450. Symbols on each spatial stream are demodulated and recovered in the receive processor 456, generating soft decisions. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper-layer data and control signals transmitted by the first communication device 410 over the physical channel. The upper-layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of Layer 2. The controller / processor 459 may be associated with a memory 460 storing program code and data. The memory 460 may be referred to as computer-readable media. In the transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport and logical channels to recover upper-layer data packets from the core network. The upper-layer data packets are then provided to all protocol layers above Layer 2. Various control signals may also be provided to Layer 3 for Layer 3 processing.

[0244] In the transmission from the second communication device 450 to the first communication device 410, at the second communication device 450, a data source 467 is used to provide upper-layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functions at the first communication device 410 described in the transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmitting lost packets and signaling to the first communication device 410. Transmit processor 468 performs modulation mapping and channel coding processing, while multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming processing. Subsequently, transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding / beamforming operations in multi-antenna transmit processor 457, the stream is provided to different antennas 452 via transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by multi-antenna transmit processor 457 into a radio frequency symbol stream before providing it to antenna 452.

[0245] In the transmission from the second communication device 450 to the first communication device 410, the function at the first communication device 410 is similar to the receiving function at the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly implement the L1 layer functions. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be referred to as computer-readable media. In the transmission from the second communication device 450 to the first communication device 410, the controller / processor 475 provides multiplexing between the transmission and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper-layer data packets from the UE 450. Upper-layer packets from the controller / processor 475 can be provided to the core network.

[0246] As an example, the first node in this application includes the second communication device 450, and the second node in this application includes the first communication device 410.

[0247] As a sub-implementation of the above embodiments, the first node is a user equipment, and the second node is a user equipment.

[0248] As a sub-implementation of the above embodiments, the first node is a user equipment and the second node is a relay node.

[0249] As a sub-implementation of the above embodiments, the first node is a relay node and the second node is a user equipment.

[0250] As a sub-implementation of the above embodiments, the first node is a user equipment and the second node is a base station equipment.

[0251] As a sub-implementation of the above embodiments, the first node is a relay node and the second node is a base station device.

[0252] As a sub-implementation of the above embodiments, the second node is a user equipment and the first node is a base station equipment.

[0253] As a sub-implementation of the above embodiments, the second node is a relay node, and the first node is a base station device.

[0254] As a sub-implementation of the above embodiments, the second communication device 450 includes: at least one controller / processor; the at least one controller / processor is responsible for HARQ operation.

[0255] As a sub-implementation of the above embodiments, the first communication device 410 includes: at least one controller / processor; the at least one controller / processor is responsible for HARQ operation.

[0256] As a sub-implementation of the above embodiments, the first communication device 410 includes: at least one controller / processor; the at least one controller / processor is responsible for error detection using positive acknowledgment (ACK) and / or negative acknowledgment (NACK) protocols to support HARQ operation.

[0257] As one embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 450 means at least: transmitting a first preamble in a first PRACH opportunity; receiving first signaling, the first signaling employing a first RNTI; wherein the first signaling is used in response to the transmission of the first preamble; a first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; an index of a reference time-domain symbol and an index of a reference time slot are both used to determine the first RNTI, the reference time-domain symbol being a time-domain symbol other than the first time-domain symbol, the reference time-domain symbol belonging to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble.

[0258] As a sub-implementation of the above embodiments, the second communication device 450 corresponds to the first node in this application.

[0259] As one embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: transmitting a first preamble in a first PRACH opportunity; receiving first signaling, the first signaling employing a first RNTI; wherein the first signaling is used in response to the transmission of the first preamble; a first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; an index of a reference time-domain symbol and an index of a reference time slot are both used to determine the first RNTI, the reference time-domain symbol being a time-domain symbol other than the first time-domain symbol, the reference time-domain symbol belonging to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble.

[0260] As a sub-implementation of the above embodiments, the second communication device 450 corresponds to the first node in this application.

[0261] As one embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The first communication device 410 means at least: receiving a first preamble in a first PRACH opportunity; transmitting a first signaling, the first signaling employing a first RNTI; wherein the first signaling is used in response to the transmission of the first preamble; a first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; an index of a reference time-domain symbol and an index of a reference time slot are both used to determine the first RNTI, the reference time-domain symbol being a time-domain symbol other than the first time-domain symbol, the reference time-domain symbol belonging to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble.

[0262] As a sub-implementation of the above embodiments, the first communication device 410 corresponds to the second node in this application.

[0263] As one embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: receiving a first preamble in a first PRACH opportunity; transmitting a first signaling, the first signaling employing a first RNTI; wherein the first signaling is used in response to the transmission of the first preamble; a first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; an index of a reference time-domain symbol and an index of a reference time slot are both used to determine the first RNTI, the reference time-domain symbol being a time-domain symbol other than the first time-domain symbol, the reference time-domain symbol belonging to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble.

[0264] As a sub-implementation of the above embodiments, the first communication device 410 corresponds to the second node in this application.

[0265] As an example, at least one of {the antenna 452, the transmitter 454, the multi-antenna transmitter processor 458, the transmitter processor 468, the controller / processor 459, the memory 460, and the data source 467} is used to transmit the first preamble in this application.

[0266] As an example, at least one of {the antenna 420, the receiver 418, the multi-antenna receiver processor 472, the receiver processor 470, the controller / processor 475, and the memory 476} is used to receive the first preamble in this application.

[0267] As an example, at least one of {the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, the controller / processor 459, the memory 460, and the data source 467} is used to receive the first signaling in this application.

[0268] As an example, at least one of {the antenna 420, the transmitter 418, the multi-antenna transmitter processor 471, the transmitter processor 416, the controller / processor 475, and the memory 476} is used to transmit the first signaling in this application.

[0269] As an example, at least one of {the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, the controller / processor 459, the memory 460, and the data source 467} is used to receive the first information in this application.

[0270] As an example, at least one of {the antenna 420, the transmitter 418, the multi-antenna transmitter processor 471, the transmitter processor 416, the controller / processor 475, and the memory 476} is used to transmit the first information in this application.

[0271] Example 5

[0272] Example 5 illustrates a signal transmission flowchart according to an embodiment of this application, as shown in the attached diagram. Figure 5 As shown. In the appendix Figure 5 In this context, the first node U1 and the second node U2 communicate via an air interface. (See attached...) Figure 5 In the diagram, the portion within the dashed box F1 is optional.

[0273] The first node U1 receives the first information in step S5101; sends the first preamble in the first PRACH opportunity in step S511; and receives the first signaling in step S512.

[0274] The second node U2 sends the first information in step S5201; receives the first preamble in the first PRACH opportunity in step S521; and sends the first signaling in step S522.

[0275] In Embodiment 5, the first signaling employs a first RNTI; the first signaling is used to respond to the transmission of the first preamble; the first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; the index of the reference time-domain symbol and the index of the reference time slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, and the reference time-domain symbol belongs to the reference time slot; the reference time-domain symbol is the earliest time-domain symbol occupied by the first reference PRACH opportunity in the time domain, and the time-domain resources occupied by the first PRACH opportunity are earlier or later than the time-domain resources occupied by the first reference PRACH opportunity.

[0276] As a sub-implementation of Embodiment 5, the second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected by the first node U1 in the first time window.

[0277] As a sub-example of Example 5, the first PRACH opportunity and the first reference PRACH opportunity are both associated with the same SS / PBCH block index.

[0278] As a sub-example of Example 5, the first PRACH opportunity and the first reference PRACH opportunity are respectively associated with different SS / PBCH block indices.

[0279] As a sub-implementation of Embodiment 5, the first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

[0280] As an example, the first node U1 is the first node in this application.

[0281] As an example, the second node U2 is the second node in this application.

[0282] As an example, the first node U1 is a UE.

[0283] As an example, the first node U1 is a base station.

[0284] As one example, the second node U2 is a base station.

[0285] As an example, the second node U2 is a UE.

[0286] As one embodiment, the air interface between the second node U2 and the first node U1 is the Uu interface.

[0287] As one embodiment, the air interface between the second node U2 and the first node U1 includes a cellular link.

[0288] As an example, the air interface between the second node U2 and the first node U1 is a PC5 interface.

[0289] As one embodiment, the air interface between the second node U2 and the first node U1 includes a side link.

[0290] As one embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between the base station equipment and the user equipment.

[0291] As one embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between satellite equipment and user equipment.

[0292] As one embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between user equipment and user equipment.

[0293] As an example, in the appendix Figure 5 The steps in the dashed box F1 exist.

[0294] As an example, in the appendix Figure 5 In the diagram, the step in the dashed box F1 does not exist.

[0295] As an example, the problem this application aims to solve includes: how to achieve PRACH coverage enhancement in a 5G NR system.

[0296] As an example, the problem to be solved by this application includes: how to determine the RA-RNTI used by the same RAR corresponding to multiple PRACH transmissions.

[0297] As an example, the problem this application aims to solve includes: how to determine the time window of the same RAR corresponding to multiple PRACH transmissions.

[0298] As an example, the problem this application aims to solve includes: how to ensure that both communicating parties have a consistent understanding of the relevant configurations of RAR.

[0299] As an example, the problem this application aims to solve includes: how to implement the relevant configuration of RAR for multiple repeated transmissions of PRACH.

[0300] As an example, the first node also sends a first PUSCH.

[0301] As an example, the second node also receives a first PUSCH.

[0302] As an example, the first PUSCH is Msg3 PUSCH (Physical uplink shared channel).

[0303] As an example, Msg3 is sent on the first PUSCH.

[0304] As an example, the RAR UL grant carried by the PDSCH scheduled by the first signaling includes the scheduling information of the first PUSCH.

[0305] As an example, the scheduling information includes at least one of the following: {occupied time-domain resources, occupied frequency-domain resources, used antenna port, adopted MCS (Modulation and Coding Scheme), TPC command}.

[0306] As an example, TC-RNTI is used for scrambling initialization of the first PUSCH.

[0307] As an example, the first node also receives a first PDSCH, which includes a UE contention resolution identity.

[0308] As an example, the second node also sends a first PDSCH, which includes a UE contention resolution identity.

[0309] As an example, DCI format 1_0 with CRC scrambled by TC-RNTI is used to schedule the first PDSCH.

[0310] As an example, the first PDSCH is a PDSCH (Physical downlink shared channel).

[0311] As an example, the time-domain resources occupied by the first PDSCH are later than the time-domain resources occupied by the first PUSCH.

[0312] Example 6

[0313] Example 6 illustrates a schematic diagram of the relationship between a first PRACH opportunity and a first PRACH opportunity group according to an embodiment of this application, as shown in the attached diagram. Figure 6 As shown.

[0314] In Example 6, the first PRACH opportunity belongs to the first PRACH opportunity group, which includes multiple PRACH opportunities.

[0315] As an example, the first PRACH opportunity belongs to a first PRACH opportunity group, and the reference time-domain symbol belongs to the time-domain resources occupied by a PRACH opportunity in the first PRACH opportunity group.

[0316] As an example, the first PRACH opportunity belongs to the first PRACH opportunity group, and the reference time-domain symbol is the earliest time-domain symbol occupied by the earliest PRACH opportunity in the first PRACH opportunity group.

[0317] As an example, the first PRACH opportunity belongs to the first PRACH opportunity group, and the reference time-domain symbol is the earliest time-domain symbol occupied by the latest PRACH opportunity in the first PRACH opportunity group.

[0318] As one embodiment, the first PRACH opportunity group includes multiple PRACH opportunities, which are respectively reserved for multiple repeated transmissions of the preamble.

[0319] As an example, all PRACH opportunities in the first PRACH opportunity group are reserved for the same preamble.

[0320] As an example, all PRACH opportunities in the first PRACH opportunity group are associated with the same SS / PBCH block index.

[0321] As an example, an SS / PBCH block consists of a PBCH (physical broadcast channel), a PSS (primary synchronization signal), and an SSS (secondary synchronization signal).

[0322] As an example, an SS / PBCH block index is an index of an SS / PBCH block.

[0323] As an example, all PRACH opportunities in the first PRACH opportunity group have the same PRACH occasion index.

[0324] As an example, each PRACH opportunity in the first PRACH opportunity group is a repetition of the same PRACH opportunity.

[0325] As an example, multiple PRACH opportunities in the first PRACH opportunity group are each reserved for multiple repetitions of a single PRACH.

[0326] As an example, the first PRACH opportunity group is configured by higher-layer signaling.

[0327] As an example, the first PRACH opportunity group is configured with RRC signaling.

[0328] As an example, the first PRACH opportunity group is configured in the information element RACH-ConfigCommon.

[0329] As an example, the first PRACH opportunity group is configured in the information element RACH-ConfigDedicated.

[0330] As an example, the first PRACH opportunity group is configured in the information element RACH-ConfigGeneric.

[0331] As an example, the first PRACH opportunity group is configured in an information element whose name includes RACH.

[0332] As an example, the first PRACH opportunity group is configured using SIB signaling.

[0333] As an example, the first PRACH opportunity group is configured with SIB1.

[0334] As an example, the first PRACH opportunity group is predefined.

[0335] Example 7

[0336] Example 7 illustrates a schematic diagram of a first RNTI according to an embodiment of this application, as shown in the attached diagram. Figure 7 As shown.

[0337] In Example 7, the first RNTI = 1 + s + 14 × t + 14 × 80 × f + 14 × 80 × 8 × ul_carrier.

[0338] In Embodiment 7, s represents the index of the reference time-domain symbol, t represents the index of the reference time slot, f is the index of the first reference PRACH opportunity in the frequency domain, and ul_carrier represents the UL carrier used to transmit the first preamble (0 represents NUL carrier, 1 represents SUL carrier).

[0339] As an example, the reference time-domain symbol is the time-domain symbol occupied by the first reference PRACH opportunity in the time domain.

[0340] As an example, the reference time-domain symbol is the earliest time-domain symbol occupied in the time domain by the first reference PRACH opportunity.

[0341] As an example, the first PRACH opportunity and the first reference PRACH opportunity do not overlap in the time domain.

[0342] As an example, the first PRACH opportunity and the first reference PRACH opportunity only partially overlap in the time domain.

[0343] As an example, the first PRACH opportunity and the first reference PRACH opportunity overlap in the time domain, and the reference time domain symbol belongs to the time domain resources occupied by the first reference PRACH opportunity but not to the time domain resources occupied by the first PRACH opportunity.

[0344] As an example, from a time domain perspective, the first PRACH opportunity precedes the first reference PRACH opportunity.

[0345] As an example, from a time domain perspective, the first PRACH opportunity follows the first reference PRACH opportunity.

[0346] As an example, the first PRACH opportunity and the first reference PRACH opportunity belong to different time slots in the time domain.

[0347] As an example, the first PRACH opportunity and the first reference PRACH opportunity belong to the same time slot in the time domain.

[0348] As an example, the first RNTI = 1 + s + 14 × t + 14 × 80 × f; where s represents the index of the reference time-domain symbol, t represents the index of the reference time slot, and f is the index of the first reference PRACH opportunity in the frequency domain.

[0349] As an example, f is a non-negative integer.

[0350] As an example, f is not less than 0 and is less than 8.

[0351] As an example, the first PRACH opportunity and the first reference PRACH opportunity are two repetitions of the same PRACH opportunity.

[0352] As an example, the first PRACH opportunity and the first reference PRACH opportunity are respectively reserved for two repetitions of the same PRACH.

[0353] As an example, both the first PRACH opportunity and the first reference PRACH opportunity belong to the first PRACH opportunity group in this application.

[0354] Example 8

[0355] Example 8 illustrates a schematic diagram of the relationship between a second reference PRACH opportunity, a first reference PRACH opportunity, a first time window, and a first preamble according to an embodiment of this application, as shown in the attached diagram. Figure 8 As shown.

[0356] In Example 8, the second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine a first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

[0357] As an example, the time-domain resources occupied by the second reference PRACH opportunity are later than those occupied by the first reference PRACH opportunity.

[0358] As an example, the time-domain resources occupied by the second reference PRACH opportunity are earlier than those occupied by the first reference PRACH opportunity.

[0359] As an example, the second reference PRACH opportunity and the first reference PRACH opportunity belong to different time slots in the time domain.

[0360] As one example, the second reference PRACH opportunity and the first reference PRACH opportunity belong to the same time slot in the time domain.

[0361] As an example, the second reference PRACH opportunity is the first PRACH opportunity.

[0362] As an example, the second reference PRACH opportunity is not the first PRACH opportunity.

[0363] As one example, the second reference PRACH opportunity and the first reference PRACH opportunity are two repetitions of the same PRACH opportunity.

[0364] As one example, the second reference PRACH opportunity and the first reference PRACH opportunity are respectively reserved for two repetitions of the same PRACH.

[0365] As an example, the second reference PRACH opportunity and the first reference PRACH opportunity both belong to the first PRACH opportunity group.

[0366] As an example, the first reference PRACH opportunity is the earliest PRACH opportunity in the first PRACH opportunity group.

[0367] As an example, the first reference PRACH opportunity is the latest PRACH opportunity in the first PRACH opportunity group.

[0368] As an example, the first reference PRACH opportunity is the first PRACH opportunity in the first PRACH opportunity group, ordered in ascending order of frequency domain first and then time domain.

[0369] As an example, the first reference PRACH opportunity is the last PRACH opportunity in the first PRACH opportunity group, which is sorted in ascending order of frequency domain first and then time domain.

[0370] As an example, the first reference PRACH opportunity is the first PRACH opportunity in the first PRACH opportunity group, ordered in ascending order of time domain first and then frequency domain.

[0371] As an example, the first reference PRACH opportunity is the last PRACH opportunity in the first PRACH opportunity group, which is sorted in ascending order of time domain first and then frequency domain.

[0372] As one embodiment, the second reference PRACH opportunity is configurable as to which PRACH opportunity in the first PRACH opportunity group is available.

[0373] As an example, the second reference PRACH opportunity is which PRACH opportunity in the first PRACH opportunity group is configured by RRC signaling / message.

[0374] As one embodiment, the second reference PRACH opportunity is used to indicate the first time window.

[0375] As one embodiment, the second reference PRACH opportunity is used to determine the temporal start position of the first time window.

[0376] As an example, the time-domain start position of the first time window is no earlier than the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain.

[0377] As one embodiment, the first time window begins at the earliest time symbol of the earliest CORESET of the PDCCH (Physical downlink control channel) configured to receive the PDCCH for the first type of PDCCH CSS set (Type1-PDCCH CSSset), which is after the latest time symbol occupied by the second reference PRACH opportunity in the time domain and separated from the latest time symbol occupied by the second reference PRACH opportunity in the time domain by at least one time symbol.

[0378] As an example, the first type of PDCCH CSS set is a common searchspace set (CSS set).

[0379] As an example, the first type of PDCCH CSS collection is configured by ra-SearchSpace in PDCCH-ConfigCommon.

[0380] As an example, the first type of PDCCH CSS set is used to detect the DCI format of CRC scrambled by RA-RNTI, MsgB-RNTI, or TC-RNTI on the primary cell.

[0381] As an example, the RAR window is a time window used to listen for Random Access Responses (RARs).

[0382] As an example, the length of the first time window is configurable.

[0383] As an example, the length of the first time window is configured by RRC signaling.

[0384] As an example, the parameter ra-ResponseWindow is used to configure the first time window.

[0385] As an example, the length of the first time window is configured by the parameter ra-ResponseWindow.

[0386] As an example, the length of the first time window is equal to the time length occupied by a positive integer number of time slots.

[0387] As an example, the length of the first time window is equal to the time length occupied by T time slots, where T is configured by ra-ResponseWindow.

[0388] As an example, the statement "the first signaling was detected in the first time window" includes: the first signaling was received in the first time window.

[0389] As an example, the second reference PRACH opportunity and the first reference PRACH opportunity are both associated with the same SS / PBCH block index.

[0390] As one example, the second reference PRACH opportunity and the first reference PRACH opportunity are associated with different SS / PBCH block indices.

[0391] As an example, the association between PRACH opportunities and SS / PBCH block indexes is configured by RRC signaling / messages.

[0392] As an example, a PRACH opportunity associated with an SS / PBCH block index means that the PRACH opportunity is mapped to the SS / PBCH block index.

[0393] Example 9

[0394] Example 9 illustrates an illustrative diagram illustrating how a second reference PRACH opportunity, according to an embodiment of this application, is used to determine a first time window, as shown in the attached diagram. Figure 9 As shown. In the appendix Figure 9 In the diagram, the gray-filled box represents the temporal resources occupied by the second reference PRACH opportunity, the diagonally filled box represents the temporal resources occupied by the first type of PDCCH CSS collection, and the white box represents the first time window.

[0395] In Embodiment 9, the first time window begins at the earliest time symbol of the earliest CORESET of the PDCCH (Physical downlink control channel) configured to receive the PDCCH for the first type of PDCCH CSS set (Type 1-PDCCH CSS set), which is after the latest time symbol occupied by the second reference PRACH opportunity in the time domain and at least one time symbol interval from the latest time symbol occupied by the second reference PRACH opportunity in the time domain.

[0396] Example 10

[0397] Example 10 illustrates a schematic diagram of the relationship between a first node, first information, a first PRACH opportunity, a first PRACH opportunity group, and a first PRACH opportunity pool according to an embodiment of this application, as shown in the attached diagram. Figure 10 As shown.

[0398] In Embodiment 10, the first node in this application receives first information; the first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

[0399] As one example, the first information includes at least one bit.

[0400] As one example, the first information is physical layer signaling.

[0401] As an example, the first information is in DCI format.

[0402] As an example, the first information is one of DCI format 0_0, DCI format 0_1, or DCI format 0_2.

[0403] As an example, the first information is one of DCI format 1_0, DCI format 1_1, or DCI format 1_2.

[0404] As one example, the first information includes one or more fields in a DCI format.

[0405] As an example, the first information is higher layer signaling.

[0406] As an example, the first information is RRC signaling.

[0407] As one example, the first information includes one or more fields in an RRC signaling.

[0408] As an example, the first information includes an IE (Information Element).

[0409] As one example, the first information includes one or more domains in an IE.

[0410] As an example, the first information is MAC CE (Medium Access Control layer Control Element).

[0411] As one example, the first information includes one or more domains in a MAC CE.

[0412] As an example, the first information belongs to a MAC CE.

[0413] As one example, the first information includes tdd-UL-DL-ConfigurationCommon.

[0414] As an example, the name of the first information includes tdd-UL-DL.

[0415] As an example, the first information is used to configure the type of time-domain symbol.

[0416] As an example, the first information is used to configure at least uplink symbols (UL symbol(s)).

[0417] As an example, the first information is used to configure at least downlink symbol(s).

[0418] As an example, from a time-domain perspective, all PRACH opportunities in the first PRACH opportunity pool belong to the same PRACH configuration period.

[0419] As an example, from a time domain perspective, all PRACH opportunities in the first PRACH opportunity pool belong to the same association period.

[0420] As an example, within an association cycle, the index of each transmitted SS / PBCH block is mapped to at least one PRACH opportunity.

[0421] As an example, within an association cycle, the index of each transmitted SS / PBCH block is mapped to at least one valid PRACH opportunity.

[0422] As an example, within an association cycle, the index of each transmitted SS / PBCH block is mapped to at least one PRACH opportunity group.

[0423] As an example, within an association cycle, the index of each transmitted SS / PBCH block is mapped to at least one valid PRACH opportunity group.

[0424] As one embodiment, the first information is used to indicate the first PRACH opportunity group from the first PRACH opportunity pool.

[0425] As an example, the statement "the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool" includes: the first information is used to indicate at least one PRACH opportunity group from the first PRACH opportunity pool, wherein the first PRACH opportunity group is one of the indicated at least one PRACH opportunity group.

[0426] As one embodiment, the statement "the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool" includes:

[0427] The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

[0428] As an example, any PRACH opportunity group in this application consists of at least one PRACH opportunity.

[0429] Example 11

[0430] Example 11 illustrates a schematic diagram illustrating the relationship between first information, a first PRACH opportunity group, multiple PRACH opportunity groups, and a first PRACH opportunity pool according to an embodiment of this application, as shown in the attached diagram. Figure 11 As shown.

[0431] In Embodiment 11, the first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

[0432] As an example, any two PRACH opportunity groups in the plurality of PRACH opportunity groups include the same number of PRACH opportunities.

[0433] As an example, any two valid PRACH opportunity groups among the plurality of PRACH opportunity groups include the same number of PRACH opportunities.

[0434] As an example, a PRACH opportunity group is a valid PRACH opportunity group only if it includes at least M valid PRACH opportunities, where M is a positive integer; the first information is used to determine whether each PRACH opportunity in the first PRACH opportunity pool is a valid PRACH opportunity.

[0435] As an example, M is equal to 1.

[0436] As an example, M is greater than 1.

[0437] As an example, M equals 2.

[0438] As an example, M equals 3.

[0439] As an example, M equals 4.

[0440] As an example, M equals 5.

[0441] As an example, M equals 6.

[0442] As an example, M equals 7.

[0443] As an example, M equals 8.

[0444] As an example, M is no greater than 1024.

[0445] As an example, M is configurable.

[0446] As an example, a PRACH opportunity group is considered a valid PRACH opportunity group only if all PRACH opportunities in the group are valid PRACH opportunities; the first information is used to determine whether each PRACH opportunity in the first PRACH opportunity pool is a valid PRACH opportunity.

[0447] As an example, all valid PRACH opportunities in each valid PRACH opportunity group of the plurality of PRACH opportunity groups are reserved for the transmission of the preamble.

[0448] As an example, the first PRACH opportunity is a valid PRACH opportunity.

[0449] As an example, the first reference PRACH opportunity is a valid PRACH opportunity.

[0450] As an example, the second reference PRACH opportunity is a valid PRACH opportunity.

[0451] As an example, the first reference PRACH opportunity is not a valid PRACH opportunity.

[0452] As an example, the second reference PRACH opportunity is not a valid PRACH opportunity.

[0453] As an example, a valid PRACH opportunity can be used to send a preamble.

[0454] As an example, if a PRACH opportunity is not a valid PRACH opportunity, then that PRACH opportunity will not be used to send the preamble.

[0455] As an example, a valid PRACH opportunity can be used for PRACH transmission.

[0456] As an example, if a PRACH opportunity is not a valid PRACH opportunity, then that PRACH opportunity will not be used for PRACH transmission.

[0457] As an example, the first information is used to indicate valid PRACH opportunities in the first PRACH opportunity pool.

[0458] As an example, the first node is provided with tdd-UL-DL-ConfigurationCommon.

[0459] As an example, a PRACH opportunity is valid if all time-domain symbols occupied by a PRACH opportunity in the time domain are uplink symbols.

[0460] As an example, a PRACH opportunity is a valid PRACH opportunity when any condition in the first set of conditions is met; one of the conditions in the first set of conditions is that all time domain symbols occupied by this PRACH opportunity in the time domain are uplink symbols.

[0461] As an example, one of the conditions in the first set of conditions is: the PRACH opportunity is not before the SS / PBCH block in its PRACH slot, and the PRACH opportunity starts after the last downlink symbol and is separated from the last downlink symbol by at least N symbols in the time domain symbol, and the PRACH opportunity starts after the time domain symbol occupied by the last SS / PBCH block and is separated from the time domain symbol occupied by the last SS / PBCH block by at least N symbols in the time domain symbol, and if channelAccessMode is configured to semistatic, the PRACH opportunity is not used for consecutive time domain symbols that do not overlap before the start of the next channel occupancy time; wherein, N is equal to 0 or 2.

[0462] Example 12

[0463] Example 12 illustrates a structural block diagram of a processing device in a first node device, as shown in the attached diagram. Figure 12 As shown. In the appendix Figure 12 In the first node device processing unit 1200, there are a first receiver 1201 and a first transmitter 1202.

[0464] As an example, the first node device 1200 is a base station.

[0465] As an example, the first node device 1200 is a user equipment.

[0466] As an example, the first node device 1200 is a relay node.

[0467] As an example, the first node device 1200 is a vehicle-mounted communication device.

[0468] As an example, the first node device 1200 is a user equipment that supports V2X communication.

[0469] As an example, the first node device 1200 is a relay node that supports V2X communication.

[0470] As an example, the first node device 1200 is a user equipment that supports dynamic waveform switching.

[0471] As an example, the first node device 1200 is a user equipment that supports operation on a shared spectrum.

[0472] As one embodiment, the first receiver 1201 includes the appendix to this application. Figure 4 The antenna 452, receiver 454, multi-antenna receiver processor 458, receiver processor 456, controller / processor 459, memory 460, and data source 467 are at least one of them.

[0473] As one embodiment, the first receiver 1201 includes the appendix to this application. Figure 4 The antenna 452, receiver 454, multi-antenna receiver processor 458, receiver processor 456, controller / processor 459, memory 460, and data source 467 are at least the first five of the following:

[0474] As one embodiment, the first receiver 1201 includes the appendix to this application. Figure 4 The antenna 452, receiver 454, multi-antenna receiver processor 458, receiver processor 456, controller / processor 459, memory 460, and data source 467 are at least the first four of them.

[0475] As one embodiment, the first receiver 1201 includes the appendix to this application. Figure 4 At least three of the following: antenna 452, receiver 454, multi-antenna receiver processor 458, receiver processor 456, controller / processor 459, memory 460, and data source 467.

[0476] As one embodiment, the first receiver 1201 includes the appendix to this application. Figure 4 At least two of the following: antenna 452, receiver 454, multi-antenna receiver processor 458, receiver processor 456, controller / processor 459, memory 460, and data source 467.

[0477] As one embodiment, the first transmitter 1202 includes the appendix to this application. Figure 4 The antenna 452, transmitter 454, multi-antenna transmitter processor 457, transmitter processor 468, controller / processor 459, memory 460 and data source 467 are at least one of them.

[0478] As one embodiment, the first transmitter 1202 includes the appendix to this application. Figure 4The antenna 452, transmitter 454, multi-antenna transmitter processor 457, transmitter processor 468, controller / processor 459, memory 460, and data source 467 are at least the first five of the following:

[0479] As one embodiment, the first transmitter 1202 includes the appendix to this application. Figure 4 At least four of the following: antenna 452, transmitter 454, multi-antenna transmitter processor 457, transmitter processor 468, controller / processor 459, memory 460, and data source 467.

[0480] As one embodiment, the first transmitter 1202 includes the appendix to this application. Figure 4 At least three of the following: antenna 452, transmitter 454, multi-antenna transmitter processor 457, transmitter processor 468, controller / processor 459, memory 460, and data source 467.

[0481] As one embodiment, the first transmitter 1202 includes the appendix to this application. Figure 4 At least two of the following: antenna 452, transmitter 454, multi-antenna transmitter processor 457, transmitter processor 468, controller / processor 459, memory 460, and data source 467.

[0482] In Embodiment 12, the first transmitter 1202 transmits a first preamble during a first PRACH opportunity; the first receiver 1201 receives a first signaling, which employs a first RNTI; wherein the first signaling is used in response to the transmission of the first preamble; the first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; the index of the reference time-domain symbol and the index of the reference time slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, and the reference time-domain symbol belongs to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble.

[0483] As an example, the reference time-domain symbol is the earliest time-domain symbol occupied by the first reference PRACH opportunity in the time domain, and the time-domain resources occupied by the first PRACH opportunity are later than the time-domain resources occupied by the first reference PRACH opportunity.

[0484] As an example, the first PRACH opportunity and the first reference PRACH opportunity are both associated with the same SS / PBCH block index.

[0485] As an example, the first PRACH opportunity and the first reference PRACH opportunity are associated with different SS / PBCH block indices.

[0486] As an example, the second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine a first time window, which is a RAR time window for the first preamble, and the first signaling is detected in the first time window.

[0487] As one embodiment, the first receiver 1201 receives first information; wherein, the first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

[0488] As an example, the first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

[0489] Example 13

[0490] Example 13 illustrates a structural block diagram of a processing device in a second node device, as shown in the attached diagram. Figure 13 As shown. In the appendix Figure 13 In the process, the second node device processing unit 1300 includes a second transmitter 1301 and a second receiver 1302.

[0491] As one embodiment, the second node device 1300 is a user equipment.

[0492] As one embodiment, the second node device 1300 is a base station.

[0493] As one embodiment, the second node device 1300 is a satellite device.

[0494] As one embodiment, the second node device 1300 is a relay node.

[0495] As one embodiment, the second node device 1300 is a vehicle-mounted communication device.

[0496] As an example, the second node device 1300 is a user equipment that supports V2X communication.

[0497] As an example, the second node device 1300 is a device that supports dynamic waveform switching.

[0498] As an example, the second node device 1300 is a device that supports operation on a shared spectrum.

[0499] As one embodiment, the second transmitter 1301 includes the appendix to this application. Figure 4 The antenna 420, transmitter 418, multi-antenna transmission processor 471, transmission processor 416, controller / processor 475, and memory 476 are at least one of them.

[0500] As one embodiment, the second transmitter 1301 includes the appendix to this application. Figure 4 The antenna 420, transmitter 418, multi-antenna transmission processor 471, transmission processor 416, controller / processor 475, and memory 476 are at least the first five of the following:

[0501] As one embodiment, the second transmitter 1301 includes the appendix to this application. Figure 4 At least four of the following: antenna 420, transmitter 418, multi-antenna transmission processor 471, transmission processor 416, controller / processor 475, and memory 476.

[0502] As one embodiment, the second transmitter 1301 includes the appendix to this application. Figure 4 At least three of the following: antenna 420, transmitter 418, multi-antenna transmission processor 471, transmission processor 416, controller / processor 475, and memory 476.

[0503] As one embodiment, the second transmitter 1301 includes the appendix to this application. Figure 4 At least two of the following: antenna 420, transmitter 418, multi-antenna transmission processor 471, transmission processor 416, controller / processor 475, and memory 476.

[0504] As one embodiment, the second receiver 1302 includes the appendix to this application. Figure 4 The antenna 420, receiver 418, multi-antenna receiver processor 472, receiver processor 470, controller / processor 475, and memory 476 are at least one of them.

[0505] As one embodiment, the second receiver 1302 includes the appendix to this application. Figure 4 The antenna 420, receiver 418, multi-antenna receiver processor 472, receiver processor 470, controller / processor 475, and memory 476 are at least the first five of the following:

[0506] As one embodiment, the second receiver 1302 includes the appendix to this application. Figure 4 At least four of the following: antenna 420, receiver 418, multi-antenna receiver processor 472, receiver processor 470, controller / processor 475, and memory 476.

[0507] As one embodiment, the second receiver 1302 includes the appendix to this application. Figure 4 At least three of the following: antenna 420, receiver 418, multi-antenna receiver processor 472, receiver processor 470, controller / processor 475, and memory 476.

[0508] As one embodiment, the second receiver 1302 includes the appendix to this application. Figure 4 At least two of the following: antenna 420, receiver 418, multi-antenna receiver processor 472, receiver processor 470, controller / processor 475, and memory 476.

[0509] In embodiment 13, the second receiver 1302 receives a first preamble during a first PRACH opportunity; the second transmitter 1301 transmits a first signaling, which employs a first RNTI; wherein the first signaling is used in response to the transmission of the first preamble; the first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; the index of the reference time-domain symbol and the index of the reference time slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, and the reference time-domain symbol belongs to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble.

[0510] As an example, the reference time-domain symbol is the earliest time-domain symbol occupied by the first reference PRACH opportunity in the time domain, and the time-domain resources occupied by the first PRACH opportunity are later than the time-domain resources occupied by the first reference PRACH opportunity.

[0511] As an example, the first PRACH opportunity and the first reference PRACH opportunity are both associated with the same SS / PBCH block index.

[0512] As an example, the first PRACH opportunity and the first reference PRACH opportunity are associated with different SS / PBCH block indices.

[0513] As an example, the second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine a first time window, which is a RAR time window for the first preamble. The first signaling is sent in the first time window.

[0514] As one embodiment, the second transmitter 1301 transmits first information; wherein, the first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to transmit one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

[0515] As an example, the first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

[0516] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The first node device in this application includes, but is not limited to, wireless communication devices such as mobile phones, tablets, laptops, network cards, low-power devices, eMTC devices, NB-IoT devices, vehicle communication devices, aircraft, airplanes, drones, and remote-controlled airplanes. The second node device in this application includes, but is not limited to, wireless communication devices such as mobile phones, tablets, laptops, network cards, low-power devices, eMTC devices, NB-IoT devices, vehicle communication devices, aircraft, airplanes, drones, and remote-controlled airplanes. The user equipment or UE or terminal in this application includes, but is not limited to, wireless communication devices such as mobile phones, tablets, laptops, network cards, low-power devices, eMTC devices, NB-IoT devices, vehicle communication devices, aircraft, airplanes, drones, and remote-controlled airplanes. The base station equipment or base station or network-side equipment in this application includes, but is not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, eNBs, gNBs, Transmitter Receiver Nodes (TRPs), GNSS, relay satellites, satellite base stations, airborne base stations, testing devices, testing equipment, testing instruments, and other equipment.

[0517] Those skilled in the art will understand that the present invention can be practiced in other specified forms without departing from its core or essential characteristics. Therefore, the embodiments disclosed herein should in any way be considered descriptive rather than restrictive. The scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications within their equivalent meaning and scope are considered to be included therein.

Claims

1. A first node used for wireless communication, characterized in that, include: The first transmitter sends the first preamble during the first PRACH opportunity; A first receiver receives a first signaling message, the first signaling message using a first RNTI, the first RNTI being a RA-RNTI; The first signaling is used in response to the transmission of the first preamble; The first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; the index of the reference time-domain symbol and the index of the reference time slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, and the reference time-domain symbol belongs to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble; The reference time-domain symbol is the earliest time-domain symbol occupied by the first reference PRACH opportunity in the time domain; from a time-domain perspective, the first PRACH opportunity is either before or after the first reference PRACH opportunity.

2. The first node according to claim 1, characterized in that, The time domain resources occupied by the first PRACH opportunity are earlier than those occupied by the first reference PRACH opportunity, and the first signaling is DCI format 1_0.

3. The first node according to claim 2, characterized in that, The first PRACH opportunity and the first reference PRACH opportunity do not overlap in the time domain.

4. The first node according to claim 2 or 3, characterized in that, The first PRACH opportunity and the first reference PRACH opportunity are both associated with the same SS / PBCH block index.

5. The first node according to claim 2 or 3, characterized in that, The first RNTI = 1 + s + 14 × t + 14 × 80 × f + 14 × 80 × 8 × ul_carrier; where s represents the index of the reference time-domain symbol, t represents the index of the reference time slot, f is the index of the first reference PRACH opportunity in the frequency domain, ul_carrier represents the UL carrier used to transmit the first preamble, ul_carrier being 0 represents an NUL carrier, and ul_carrier being 1 represents an SUL carrier.

6. The first node according to claim 4, characterized in that, The first RNTI = 1 + s + 14 × t + 14 × 80 × f + 14 × 80 × 8 × ul_carrier; where s represents the index of the reference time-domain symbol, t represents the index of the reference time slot, f is the index of the first reference PRACH opportunity in the frequency domain, ul_carrier represents the UL carrier used to transmit the first preamble, ul_carrier being 0 represents an NUL carrier, and ul_carrier being 1 represents an SUL carrier.

7. The first node according to claim 2 or 3, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

8. The first node according to claim 7, characterized in that, The first time window begins at the earliest time-domain symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCHCSS set, which is after the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain and at least one time-domain symbol interval from the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain.

9. The first node according to claim 4, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

10. The first node according to claim 9, characterized in that, The first time window begins at the earliest time-domain symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCHCSS set, which is after the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain and at least one time-domain symbol interval from the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain.

11. The first node according to claim 5, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

12. The first node according to claim 11, characterized in that, The first time window begins at the earliest time-domain symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCHCSS set, which is after the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain and at least one time-domain symbol interval from the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain.

13. The first node according to claim 6, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

14. The first node according to claim 13, characterized in that, The first time window begins at the earliest time-domain symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCHCSS set, which is after the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain and at least one time-domain symbol interval from the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain.

15. The first node according to claim 2 or 3, characterized in that, include: The first receiver receives the first information; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

16. The first node according to claim 15, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

17. The first node according to claim 4, characterized in that, include: The first receiver receives the first information; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

18. The first node according to claim 17, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

19. The first node according to claim 5, characterized in that, include: The first receiver receives the first information; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

20. The first node according to claim 19, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

21. The first node according to claim 6, characterized in that, include: The first receiver receives the first information; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

22. The first node according to claim 21, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

23. The first node according to claim 7, characterized in that, include: The first receiver receives the first information; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

24. The first node according to claim 23, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

25. The first node according to claim 8, characterized in that, include: The first receiver receives the first information; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

26. The first node according to claim 25, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

27. The first node according to claim 9, characterized in that, include: The first receiver receives the first information; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

28. The first node according to claim 27, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

29. The first node according to claim 10, characterized in that, include: The first receiver receives the first information; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

30. The first node according to claim 29, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

31. The first node according to claim 11, characterized in that, include: The first receiver receives the first information; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

32. The first node according to claim 31, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

33. The first node according to claim 12, characterized in that, include: The first receiver receives the first information; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

34. The first node according to claim 33, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

35. The first node according to claim 13, characterized in that, include: The first receiver receives the first information; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

36. The first node according to claim 35, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

37. The first node according to claim 14, characterized in that, include: The first receiver receives the first information; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

38. The first node according to claim 37, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

39. A second node used for wireless communication, characterized in that, include: The second receiver receives the first preamble during the first PRACH opportunity; The second transmitter sends the first signaling, which uses the first RNTI, and the first RNTI is RA-RNTI; Wherein, the first signaling is used in response to the transmission of the first preamble; the first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; the index of the reference time-domain symbol and the index of the reference time slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, the reference time-domain symbol belongs to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble; The reference time-domain symbol is the earliest time-domain symbol occupied by the first reference PRACH opportunity in the time domain; from a time-domain perspective, the first PRACH opportunity is either before or after the first reference PRACH opportunity.

40. The second node according to claim 39, characterized in that, The time domain resources occupied by the first PRACH opportunity are earlier than those occupied by the first reference PRACH opportunity, and the first signaling is DCI format 1_0.

41. The second node according to claim 40, characterized in that, The first PRACH opportunity and the first reference PRACH opportunity do not overlap in the time domain.

42. The second node according to claim 40 or 41, characterized in that, The first PRACH opportunity and the first reference PRACH opportunity are both associated with the same SS / PBCH block index.

43. The second node according to claim 40 or 41, characterized in that, The first RNTI = 1 + s + 14 × t + 14 × 80 × f + 14 × 80 × 8 × ul_carrier; where s represents the index of the reference time-domain symbol, t represents the index of the reference time slot, f is the index of the first reference PRACH opportunity in the frequency domain, ul_carrier represents the UL carrier used to transmit the first preamble, ul_carrier being 0 represents an NUL carrier, and ul_carrier being 1 represents an SUL carrier.

44. The second node according to claim 42, characterized in that, The first RNTI = 1 + s + 14 × t + 14 × 80 × f + 14 × 80 × 8 × ul_carrier; where s represents the index of the reference time-domain symbol, t represents the index of the reference time slot, f is the index of the first reference PRACH opportunity in the frequency domain, ul_carrier represents the UL carrier used to transmit the first preamble, ul_carrier being 0 represents an NUL carrier, and ul_carrier being 1 represents an SUL carrier.

45. The second node according to claim 40 or 41, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

46. ​​The second node according to claim 45, characterized in that, The first time window begins at the earliest time-domain symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCHCSS set, which is after the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain and at least one time-domain symbol interval from the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain.

47. The second node according to claim 42, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

48. The second node according to claim 47, characterized in that, The first time window begins at the earliest time-domain symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCHCSS set, which is after the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain and at least one time-domain symbol interval from the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain.

49. The second node according to claim 43, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

50. The second node according to claim 49, characterized in that, The first time window begins at the earliest time-domain symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCHCSS set, which is after the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain and at least one time-domain symbol interval from the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain.

51. The second node according to claim 44, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

52. The second node according to claim 51, characterized in that, The first time window begins at the earliest time-domain symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCHCSS set, which is after the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain and at least one time-domain symbol interval from the latest time-domain symbol occupied by the second reference PRACH opportunity in the time domain.

53. The second node according to claim 40 or 41, characterized in that, include: The second transmitter sends the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

54. The second node according to claim 53, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

55. The second node according to claim 42, characterized in that, include: The second transmitter sends the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

56. The second node according to claim 55, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

57. The second node according to claim 43, characterized in that, include: The second transmitter sends the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

58. The second node according to claim 57, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

59. The second node according to claim 44, characterized in that, include: The second transmitter sends the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

60. The second node according to claim 59, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

61. The second node according to claim 45, characterized in that, include: The second transmitter sends the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

62. The second node according to claim 61, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

63. The second node according to claim 46, characterized in that, include: The second transmitter sends the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

64. The second node according to claim 63, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

65. The second node according to claim 47, characterized in that, include: The second transmitter sends the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

66. The second node according to claim 65, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

67. The second node according to claim 48, characterized in that, include: The second transmitter sends the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

68. The second node according to claim 67, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

69. The second node according to claim 49, characterized in that, include: The second transmitter sends the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

70. The second node according to claim 69, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

71. The second node according to claim 50, characterized in that, include: The second transmitter sends the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

72. The second node according to claim 71, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

73. The second node according to claim 51, characterized in that, include: The second transmitter sends the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

74. The second node according to claim 73, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

75. The second node according to claim 52, characterized in that, include: The second transmitter sends the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

76. The second node according to claim 75, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

77. A method used in a first node of wireless communication, characterized in that, include: Send the first preamble during the first PRACH opportunity; Receive the first signaling, the first signaling uses the first RNTI, the first RNTI is RA-RNTI; Wherein, the first signaling is used in response to the transmission of the first preamble; the first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; the index of the reference time-domain symbol and the index of the reference time slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, the reference time-domain symbol belongs to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble; The reference time-domain symbol is the earliest time-domain symbol occupied by the first reference PRACH opportunity in the time domain; from a time-domain perspective, the first PRACH opportunity is either before or after the first reference PRACH opportunity.

78. The method in the first node according to claim 77, characterized in that, The time domain resources occupied by the first PRACH opportunity are earlier than those occupied by the first reference PRACH opportunity, and the first signaling is DCI format 1_0.

79. The method in the first node according to claim 78, characterized in that, The first PRACH opportunity and the first reference PRACH opportunity do not overlap in the time domain.

80. The method in the first node according to claim 78 or 79, characterized in that, The first PRACH opportunity and the first reference PRACH opportunity are both associated with the same SS / PBCH block index.

81. The method in the first node according to claim 78 or 79, characterized in that, The first RNTI = 1 + s + 14 × t + 14 × 80 × f + 14 × 80 × 8 × ul_carrier; where s represents the index of the reference time-domain symbol, t represents the index of the reference time slot, f is the index of the first reference PRACH opportunity in the frequency domain, ul_carrier represents the UL carrier used to transmit the first preamble, ul_carrier being 0 represents an NUL carrier, and ul_carrier being 1 represents an SUL carrier.

82. The method in the first node according to claim 80, characterized in that, The first RNTI = 1 + s + 14 × t + 14 × 80 × f + 14 × 80 × 8 × ul_carrier; where s represents the index of the reference time-domain symbol, t represents the index of the reference time slot, f is the index of the first reference PRACH opportunity in the frequency domain, ul_carrier represents the UL carrier used to transmit the first preamble, ul_carrier being 0 represents an NUL carrier, and ul_carrier being 1 represents an SUL carrier.

83. The method in the first node according to claim 78 or 79, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

84. The method in the first node according to claim 83, characterized in that, The first time window begins at the earliest time symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCH CSS set, which is after the latest time symbol occupied by the second reference PRACH opportunity in the time domain and at least one time symbol interval from the latest time symbol occupied by the second reference PRACH opportunity in the time domain.

85. The method in the first node according to claim 80, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

86. The method in the first node according to claim 85, characterized in that, The first time window begins at the earliest time symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCH CSS set, which is after the latest time symbol occupied by the second reference PRACH opportunity in the time domain and at least one time symbol interval from the latest time symbol occupied by the second reference PRACH opportunity in the time domain.

87. The method in the first node according to claim 81, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

88. The method in the first node according to claim 87, characterized in that, The first time window begins at the earliest time symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCH CSS set, which is after the latest time symbol occupied by the second reference PRACH opportunity in the time domain and at least one time symbol interval from the latest time symbol occupied by the second reference PRACH opportunity in the time domain.

89. The method in the first node according to claim 82, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

90. The method in the first node according to claim 89, characterized in that, The first time window begins at the earliest time symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCH CSS set, which is after the latest time symbol occupied by the second reference PRACH opportunity in the time domain and at least one time symbol interval from the latest time symbol occupied by the second reference PRACH opportunity in the time domain.

91. The method in the first node according to claim 78 or 79, characterized in that, include: Receive the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

92. The method in the first node according to claim 91, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

93. The method in the first node according to claim 80, characterized in that, include: Receive the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

94. The method in the first node according to claim 93, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

95. The method in the first node according to claim 81, characterized in that, include: Receive the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

96. The method in the first node according to claim 95, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

97. The method in the first node according to claim 82, characterized in that, include: Receive the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

98. The method in the first node according to claim 97, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

99. The method in the first node according to claim 83, characterized in that, include: Receive the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

100. The method in the first node according to claim 99, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

101. The method in the first node according to claim 84, characterized in that, include: Receive the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

102. The method in the first node according to claim 101, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

103. The method in the first node according to claim 85, characterized in that, include: Receive the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

104. The method in the first node according to claim 103, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

105. The method in the first node according to claim 86, characterized in that, include: Receive the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

106. The method in the first node according to claim 105, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

107. The method in the first node according to claim 87, characterized in that, include: Receive the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

108. The method in the first node according to claim 107, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

109. The method in the first node according to claim 88, characterized in that, include: Receive the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

110. The method in the first node according to claim 109, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

111. The method in the first node according to claim 89, characterized in that, include: Receive the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

112. The method in the first node according to claim 111, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

113. The method in the first node according to claim 90, characterized in that, include: Receive the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

114. The method in the first node according to claim 113, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

115. A method used in a second node for wireless communication, characterized in that, include: Receive the first preamble during the first PRACH opportunity; Send the first signaling, the first signaling uses the first RNTI, the first RNTI is RA-RNTI; Wherein, the first signaling is used in response to the transmission of the first preamble; the first time-domain symbol is the earliest time-domain symbol occupied by the first PRACH opportunity in the time domain; the index of the reference time-domain symbol and the index of the reference time slot are both used to determine the first RNTI, the reference time-domain symbol is a time-domain symbol other than the first time-domain symbol, the reference time-domain symbol belongs to the reference time slot; the time-domain position of the reference time-domain symbol is related to at least one of the first PRACH opportunity or the first preamble; The reference time-domain symbol is the earliest time-domain symbol occupied by the first reference PRACH opportunity in the time domain; from a time-domain perspective, the first PRACH opportunity is either before or after the first reference PRACH opportunity.

116. The method in the second node according to claim 115, characterized in that, The time domain resources occupied by the first PRACH opportunity are earlier than those occupied by the first reference PRACH opportunity, and the first signaling is DCI format 1_0.

117. The method in the second node according to claim 116, characterized in that, The first PRACH opportunity and the first reference PRACH opportunity do not overlap in the time domain.

118. The method in the second node according to claim 116 or 117, characterized in that, The first PRACH opportunity and the first reference PRACH opportunity are both associated with the same SS / PBCH block index.

119. The method in the second node according to claim 116 or 117, characterized in that, The first RNTI = 1 + s + 14 × t + 14 × 80 × f + 14 × 80 × 8 × ul_carrier; where s represents the index of the reference time-domain symbol, t represents the index of the reference time slot, f is the index of the first reference PRACH opportunity in the frequency domain, ul_carrier represents the UL carrier used to transmit the first preamble, ul_carrier being 0 represents an NUL carrier, and ul_carrier being 1 represents an SUL carrier.

120. The method in the second node according to claim 118, characterized in that, The first RNTI = 1 + s + 14 × t + 14 × 80 × f + 14 × 80 × 8 × ul_carrier; where s represents the index of the reference time-domain symbol, t represents the index of the reference time slot, f is the index of the first reference PRACH opportunity in the frequency domain, ul_carrier represents the UL carrier used to transmit the first preamble, ul_carrier being 0 represents an NUL carrier, and ul_carrier being 1 represents an SUL carrier.

121. The method in the second node according to claim 116 or 117, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

122. The method in the second node according to claim 121, characterized in that, The first time window begins at the earliest time symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCH CSS set, which is after the latest time symbol occupied by the second reference PRACH opportunity in the time domain and at least one time symbol interval from the latest time symbol occupied by the second reference PRACH opportunity in the time domain.

123. The method in the second node according to claim 118, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

124. The method in the second node according to claim 123, characterized in that, The first time window begins at the earliest time symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCH CSS set, which is after the latest time symbol occupied by the second reference PRACH opportunity in the time domain and at least one time symbol interval from the latest time symbol occupied by the second reference PRACH opportunity in the time domain.

125. The method in the second node according to claim 119, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

126. The method in the second node according to claim 125, characterized in that, The first time window begins at the earliest time symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCH CSS set, which is after the latest time symbol occupied by the second reference PRACH opportunity in the time domain and at least one time symbol interval from the latest time symbol occupied by the second reference PRACH opportunity in the time domain.

127. The method in the second node according to claim 120, characterized in that, The second reference PRACH opportunity does not overlap with the first reference PRACH opportunity in the time domain. The second reference PRACH opportunity is used to determine the first time window, which is a RAR time window for the first preamble. The first signaling is detected in the first time window.

128. The method in the second node according to claim 127, characterized in that, The first time window begins at the earliest time symbol of the earliest CORESET configured to receive PDCCH for the first type of PDCCH CSS set, which is after the latest time symbol occupied by the second reference PRACH opportunity in the time domain and at least one time symbol interval from the latest time symbol occupied by the second reference PRACH opportunity in the time domain.

129. The method in the second node according to claim 116 or 117, characterized in that, include: Send the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

130. The method in the second node according to claim 129, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

131. The method in the second node according to claim 118, characterized in that, include: Send the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

132. The method in the second node according to claim 131, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

133. The method in the second node according to claim 119, characterized in that, include: Send the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

134. The method in the second node according to claim 133, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

135. The method in the second node according to claim 120, characterized in that, include: Send the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

136. The method in the second node according to claim 135, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

137. The method in the second node according to claim 121, characterized in that, include: Send the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

138. The method in the second node according to claim 137, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

139. The method in the second node according to claim 122, characterized in that, include: Send the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

140. The method in the second node according to claim 139, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

141. The method in the second node according to claim 123, characterized in that, include: Send the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

142. The method in the second node according to claim 141, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

143. The method in the second node according to claim 124, characterized in that, include: Send the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

144. The method in the second node according to claim 143, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

145. The method in the second node according to claim 125, characterized in that, include: Send the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

146. The method in the second node according to claim 145, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

147. The method in the second node according to claim 126, characterized in that, include: Send the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

148. The method in the second node according to claim 147, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

149. The method in the second node according to claim 127, characterized in that, include: Send the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

150. The method in the second node according to claim 149, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

151. The method in the second node according to claim 128, characterized in that, include: Send the first message; The first PRACH opportunity pool includes multiple PRACH opportunities, the first PRACH opportunity group includes multiple PRACH opportunities, all PRACH opportunities in the first PRACH opportunity group belong to the first PRACH opportunity pool; the first PRACH opportunity belongs to the first PRACH opportunity group, each PRACH opportunity in the first PRACH opportunity group is used to send one repetition of the first preamble, and the first information is used to determine the first PRACH opportunity group from the first PRACH opportunity pool.

152. The method in the second node according to claim 151, characterized in that, The first PRACH opportunity pool is divided into multiple PRACH opportunity groups; the first information is used to determine at least one valid PRACH opportunity group from the multiple PRACH opportunity groups, and each valid PRACH opportunity group in the multiple PRACH opportunity groups is reserved for the transmission of the preamble; the first PRACH opportunity group is a valid PRACH opportunity group among the multiple PRACH opportunity groups.

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