Prach-related method and apparatus for use in node for wireless communication

Abstract

Disclosed in the present application are a PRACH-related method and apparatus for use in a node for wireless communication. A first receiver receives a first PDCCH, wherein a first symbol set is used for the receiving of the first PDCCH; and a first transmitter sends a first PRACH, wherein a second symbol set is used for the sending of the first PRACH, and the first PDCCH triggers the sending of the first PRACH. The time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time; the reference time is related to at least one of the symbol type of a symbol in the first symbol set or the symbol type of a symbol in the second symbol set; and the symbol type may be a full-duplex type or a non-full-duplex type.

Description

A method and apparatus related to PRACH in a node used for wireless communication

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on March 29, 2024, with application number 202410384127.1 and application name “A method and device related to PRACH in a node used for wireless communication”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to a transmission method and apparatus in a wireless communication system, and in particular to a transmission method and apparatus for wireless signals in a wireless communication system supporting a cellular network. Background Art

[0003] In existing NR (New Radio) systems, spectrum resources are statically divided into FDD (Frequency Division Duplex) and TDD (Time Division Duplex) spectrum. For TDD spectrum, both base stations and user equipment (UE) operate in half-duplex mode. This half-duplex mode avoids self-interference and mitigates the impact of cross-link interference (CLI), but it also leads to reduced resource utilization and increased latency. To address these issues, supporting flexible duplex modes or variable link directions (uplink, downlink, or flexible) in TDD or FDD spectrum is a possible solution. The 3rd Generation Partnership Project (3GPP) has agreed to conduct research on duplex technologies, specifically subband non-overlapping full-duplex (SBFD) mode for gNBs (NR Node Bs). Optimizing system design accordingly is a key component of this research.

[0004] PRACH (Physical Random Access Channel) transmission is an important aspect in wireless communications. Summary of the Invention

[0005] How to optimize the PRACH transmission triggered by PDCCH (Physical Downlink Control Channel) is a key issue that needs to be considered in system design; the present application discloses a solution to the above problem. It should be noted that the present application can be applicable to a variety of wireless communication scenarios, such as scenarios using SBFD mode, scenarios using other types of full-duplex modes other than SBFD, scenarios using more flexible duplex modes, etc., and achieve similar technical effects. In addition, the use of a unified solution for different scenarios (including but not limited to scenarios using SBFD mode, scenarios using other types of full-duplex modes other than SBFD, and scenarios using more flexible duplex modes) can also help reduce hardware complexity and cost, or improve performance. In the absence of conflict, the embodiments and features in any node of the present application can be applied to any other node. In the absence of conflict, the embodiments and features in the embodiments of the present application can be arbitrarily combined with each other.

[0006] Where necessary, the interpretation of the terms in this application may refer to the description of the 3GPP specification protocols TS37 series and TS38 series.

[0007] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0008] receiving a first PDCCH, where the first symbol set is used for receiving the first PDCCH;

[0009] Sending a first PRACH, where the second symbol set is used for sending the first PRACH, and the first PDCCH triggers the sending of the first PRACH;

[0010] The time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full-duplex and non-full-duplex.

[0011] As an embodiment, the problem to be solved by the present application includes: in a system configured with full-duplex symbols, how to optimize the timing constraint between a PDCCH order and a corresponding PRACH transmission to better adapt to the configuration of full-duplex symbols.

[0012] As an embodiment, the problem to be solved by the present application includes: in a system configured with full-duplex symbols, what conditions need to be met for the transmission of the PRACH triggered by the PDCCH.

[0013] As an embodiment, the benefits of the above method include: optimizing the mechanism of PDCCH triggering PRACH transmission, making it more suitable for the configuration of full-duplex symbols.

[0014] As an embodiment, the benefits of the above method include: being conducive to improving the robustness of PRACH transmission triggered by PDCCH.

[0015] According to one aspect of the present application, the above method is characterized in that:

[0016] The reference time is linearly related to the first time component, and whether the first time component is equal to 0 is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set.

[0017] As an embodiment, the advantages of the above method include: good compatibility with existing 3GPP protocols and small workload for standardization.

[0018] According to one aspect of the present application, the above method is characterized in that:

[0019] When at least one symbol in the second symbol set is a full-duplex symbol, the first time component is greater than 0; when all symbols in the second symbol set are non-full-duplex symbols, the first time component is equal to 0.

[0020] As an embodiment, in the above method, when the first PRACH occupies a full-duplex symbol, the feature that the first time component is greater than 0 relaxes the timing requirements between the PDCCH command and the corresponding PRACH transmission: such a feature is conducive to avoiding the need for higher UE processing capabilities after the introduction of full-duplex symbols, and is conducive to saving UE costs.

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

[0022] When at least one symbol in the first symbol set is a full-duplex symbol and at least one symbol in the second symbol set is a full-duplex symbol, or when all symbols in the first symbol set are non-full-duplex symbols and all symbols in the second symbol set are non-full-duplex symbols: the first time component is equal to 0;

[0023] When at least one symbol in the first symbol set is a full-duplex symbol and the symbols in the second symbol set are all non-full-duplex symbols, or when the symbols in the first symbol set are all non-full-duplex symbols and at least one symbol in the second symbol set is a full-duplex symbol: the first time component is greater than 0.

[0024] As an embodiment, the above method is conducive to ensuring that the first node has sufficient preparation time to process the transmission of the first PRACH when the first PDCCH and the first PRACH occupy different types of symbols, and does not increase additional PRACH transmission delay when the first PDCCH and the first PRACH occupy the same type of symbols.

[0025] As an embodiment, the above method has the following benefits: it is helpful to avoid the need for higher UE processing capabilities after the introduction of full-duplex symbols, and it is helpful to save UE costs.

[0026] According to one aspect of the present application, the above method is characterized in that:

[0027] The first node selects a first PRACH opportunity and sends the first PRACH in the first PRACH opportunity; the selection of the first PRACH opportunity depends on an indication of the first PDCCH.

[0028] According to one aspect of the present application, the above method is characterized in that:

[0029] When a symbol is indicated as downlink by uplink and downlink TDD configuration signaling and can be used for uplink transmission, this symbol is a full-duplex symbol; when a symbol is indicated as uplink by uplink and downlink TDD configuration signaling, this symbol is not a full-duplex symbol; when a symbol is not a full-duplex symbol, this symbol is a non-full-duplex symbol.

[0030] According to one aspect of the present application, the above method is characterized in that:

[0031] The uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

[0032] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0033] Sending a first PDCCH, where a first symbol set is used for sending the first PDCCH, and the first PDCCH triggers sending a first PRACH;

[0034] receiving the first PRACH, where the second symbol set is used for receiving the first PRACH;

[0035] The time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full-duplex and non-full-duplex.

[0036] According to one aspect of the present application, the above method is characterized in that:

[0037] The reference time is linearly correlated with the first time component, and whether the first time component is equal to 0 is related to at least one of the symbol types of the symbols in the first symbol set or the symbol types of the symbols in the second symbol set.

[0038] According to one aspect of the present application, the above method is characterized in that:

[0039] When at least one symbol in the second symbol set is a full-duplex symbol, the first time component is greater than 0; when all symbols in the second symbol set are non-full-duplex symbols, the first time component is equal to 0.

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

[0041] When at least one symbol in the first symbol set is a full-duplex symbol and at least one symbol in the second symbol set is a full-duplex symbol, or when all symbols in the first symbol set are non-full-duplex symbols and all symbols in the second symbol set are non-full-duplex symbols: the first time component is equal to 0;

[0042] When at least one symbol in the first symbol set is a full-duplex symbol and the symbols in the second symbol set are all non-full-duplex symbols, or when the symbols in the first symbol set are all non-full-duplex symbols and at least one symbol in the second symbol set is a full-duplex symbol: the first time component is greater than 0.

[0043] According to one aspect of the present application, the above method is characterized in that:

[0044] The first PRACH is received in a first PRACH opportunity; and the transmitter of the first PRACH determines the first PRACH opportunity based on an indication of the first PDCCH.

[0045] According to one aspect of the present application, the above method is characterized in that:

[0046] When a symbol is indicated as downlink by uplink and downlink TDD configuration signaling and can be used for uplink transmission, this symbol is a full-duplex symbol; when a symbol is indicated as uplink by uplink and downlink TDD configuration signaling, this symbol is not a full-duplex symbol; when a symbol is not a full-duplex symbol, this symbol is a non-full-duplex symbol.

[0047] According to one aspect of the present application, the above method is characterized in that:

[0048] The uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

[0049] The present application discloses a first node used for wireless communication, characterized by comprising:

[0050] A first receiver is configured to receive a first PDCCH, wherein the first symbol set is used for receiving the first PDCCH;

[0051] A first transmitter transmits a first PRACH, where a second symbol set is used for transmitting the first PRACH, and the first PDCCH triggers the transmitting of the first PRACH;

[0052] The time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full-duplex and non-full-duplex.

[0053] The present application discloses a second node used for wireless communication, characterized by comprising:

[0054] A second transmitter transmits a first PDCCH, where a first symbol set is used for transmitting the first PDCCH, and the first PDCCH triggers transmitting a first PRACH;

[0055] a second receiver, receiving the first PRACH, wherein the second symbol set is used for receiving the first PRACH;

[0056] The time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full-duplex and non-full-duplex. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0058] FIG1 shows a processing flow chart of a first node according to an embodiment of the present application;

[0059] FIG2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

[0060] FIG3 shows a schematic diagram of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0061] FIG4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;

[0062] FIG5 shows a signal transmission flow chart according to an embodiment of the present application;

[0063] FIG6 is a schematic diagram illustrating the time between the last symbol of the first PDCCH and the first symbol of the first PRACH according to one embodiment of the present application;

[0064] FIG7 shows a schematic diagram illustrating reference time according to an embodiment of the present application;

[0065] FIG8 is a schematic diagram illustrating whether the first time component is equal to 0 and whether the first time component is equal to 0 is related to at least one of the symbol types of the symbols in the first symbol set or the symbol types of the symbols in the second symbol set according to an embodiment of the present application;

[0066] FIG9 shows a schematic diagram illustrating a full-duplex symbol and a non-full-duplex symbol according to an embodiment of the present application;

[0067] FIG10 shows a structural block diagram of a processing device in a first node device according to an embodiment of the present application;

[0068] FIG11 shows a structural block diagram of a processing device in a second node device according to an embodiment of the present application. DETAILED DESCRIPTION

[0069] The technical solution of the present application will be further described in detail below with reference to the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

[0070] Example 1

[0071] Example 1 illustrates a processing flow chart of a first node according to an embodiment of the present application, as shown in FIG1 .

[0072] In embodiment 1, the first node in the present application receives a first PDCCH in step 101 and sends a first PRACH in step 102.

[0073] In embodiment 1, the first symbol set is used for receiving the first PDCCH; the second symbol set is used for sending the first PRACH, and the first PDCCH triggers the sending of the first PRACH; the time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full-duplex and non-full-duplex.

[0074] As an embodiment, the first PDCCH is a PDCCH (Physical Downlink Control Channel) command (PDCCH order).

[0075] As an embodiment, the first PDCCH initiates a random access procedure.

[0076] As an embodiment, the random access preamble (random access preamble) used for the transmission of the first PRACH (Physical Random Access Channel) is allocated by the first PDCCH.

[0077] As an embodiment, the first symbol set includes at least one symbol.

[0078] As an embodiment, the symbols in the first symbol set are OFDM (Orthogonal Frequency Division Multiplex) symbols.

[0079] As an embodiment, the symbols in the first symbol set are symbols in a time slot.

[0080] As an embodiment, the symbols in the first symbol set are symbols defined in the time domain.

[0081] As an embodiment, the first symbol set is configurable.

[0082] As an embodiment, the first symbol set is used for receiving the first PDCCH, including: the first symbol set includes symbols (symbol(s)) occupied by the reception of the first PDCCH.

[0083] As an embodiment, the first symbol set is used for receiving the first PDCCH, including: from a time domain perspective, the first PDCCH is received on a symbol (symbol(s)) in the first symbol set.

[0084] As an embodiment, the second symbol set includes at least one symbol.

[0085] As an embodiment, the symbols in the second symbol set are OFDM symbols.

[0086] As an embodiment, the symbols in the second symbol set are symbols in a time slot.

[0087] As an embodiment, the symbols in the second symbol set are symbols defined in the time domain.

[0088] As an embodiment, the second symbol set includes symbols configured for a PRACH occasion.

[0089] As an embodiment, the second symbol set is used for sending the first PRACH, including: the second symbol set includes symbols occupied by the sending of the first PRACH.

[0090] As an embodiment, the second symbol set is used for sending the first PRACH, including: from a time domain perspective, the first PRACH is sent on symbols in the second symbol set.

[0091] As an embodiment, the first PDCCH triggers the sending of the first PRACH, including: the sending of the first PRACH is a response to the detection of the first PDCCH.

[0092] As an embodiment, the first PDCCH triggers the sending of the first PRACH, including: the first PDCCH initiates a random access process, and the random access process includes the sending of the first PRACH.

[0093] As an embodiment, the random access process initiated by the first PDCCH at least includes the sending of the first PRACH and a random access response (Random Access Response).

[0094] As an embodiment, the first PDCCH occupies at least one symbol in the time domain.

[0095] As an embodiment, the last symbol of the first PDCCH is an OFDM symbol.

[0096] As an embodiment, the last symbol of the first PDCCH is a symbol in a time slot.

[0097] As an embodiment, the last symbol of the first PDCCH is a symbol defined in the time domain.

[0098] As an embodiment, the last symbol of the first PDCCH is the latest symbol used to receive the first PDCCH.

[0099] As an embodiment, the last symbol of the first PDCCH is the symbol where the first PDCCH ends.

[0100] As an embodiment, the first PRACH occupies at least one symbol in the time domain.

[0101] As an embodiment, the first symbol of the first PRACH is an OFDM symbol.

[0102] As an embodiment, the first symbol of the first PRACH is a symbol in a time slot.

[0103] As an embodiment, the first symbol of the first PRACH is a symbol defined in the time domain.

[0104] As an embodiment, the first symbol of the first PRACH is the earliest symbol used to send the first PRACH.

[0105] As an embodiment, the first symbol of the first PRACH is the symbol at which the first PRACH starts to be sent.

[0106] As an embodiment, the symbols in the first symbol set are all full-duplex symbols, or the symbols in the first symbol set are all non-full-duplex symbols.

[0107] As an embodiment, the symbols in the second symbol set are all full-duplex symbols, or the symbols in the second symbol set are all non-full-duplex symbols.

[0108] As an embodiment, the sending of the first PRACH depends on the time between the last symbol of the first PDCCH and the first symbol of the first PRACH being not less than the reference time.

[0109] As an embodiment, the first node determines to send the first PRACH on the premise that the time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than the reference time.

[0110] As an embodiment, the first node selects a first PRACH opportunity and sends the first PRACH in the first PRACH opportunity; the selection of the first PRACH opportunity depends on an indication of the first PDCCH.

[0111] As an embodiment, the ra-PreambleIndex indicated by the first PDCCH is not 0b000000, and the first PDCCH indicates the first SSB (synchronization signals / physical broadcast channel block, SS / PBCH block); the first PRACH is sent in the first PRACH opportunity, and the first PRACH opportunity is randomly selected with equal probability from the consecutive PRACH opportunities mapped to the first SSB; the random access preamble index corresponding to the random access preamble sent for the first PRACH is the ra-PreambleIndex indicated by the first PDCCH.

[0112] As an embodiment, the ra-PreambleIndex indicated by the first PDCCH is 0b000000, and the first node selects the first SSB; the first PRACH is sent in the first PRACH opportunity, and the first PRACH opportunity is randomly selected with equal probability from the consecutive PRACH opportunities mapped to the first SSB; the random access preamble code used for the transmission of the first PRACH is randomly selected with medium probability from multiple random access preamble codes.

[0113] As a sub-embodiment of the above embodiment, the first node measures the SS-RSRP of multiple SSBs; if there is at least one available SSB whose corresponding SS-RSRP is higher than a first threshold, the first SSB is an SSB whose corresponding SS-RSRP is higher than the first threshold; otherwise, the first SSB is an SSB determined by the first node itself; the first threshold is configurable.

[0114] As a sub-embodiment of the above embodiment, the multiple random access preamble codes are all configured to be mapped to the SS / PBCH block index of the first SSB.

[0115] As a sub-embodiment of the above embodiment, random access preamble group B (Random Access Preambles group B) is not configured; the multiple random access preambles are all configured to be mapped to the SS / PBCH block index of the first SSB, the random access preambles in random access preamble group A (Random Access Preambles group A).

[0116] As an embodiment, the SS-RSRP of an SSB is obtained by measuring at least a portion of the SSB.

[0117] As an embodiment, the SS-RSRP of an SSB is the linear average over the power contributions of the resource elements carrying the secondary synchronization signal in the SSB.

[0118] As an embodiment, the start of the continuous PRACH opportunity to which the first SSB is mapped is no earlier than the start of the next available PRACH opportunity.

[0119] As an embodiment, the start of the first PRACH opportunity is no earlier than the start of the next available PRACH opportunity.

[0120] As an embodiment, the continuous PRACH opportunities to which the first SSB is mapped are: the continuous PRACH opportunities to which the first SSB is mapped, starting from the next available PRACH opportunity.

[0121] As an embodiment, the number of PRACH opportunities included in the continuous PRACH opportunities to which the first SSB is mapped is configurable.

[0122] As an embodiment, the continuous PRACH opportunities mapped to the first SSB are all PRACH opportunities in full-duplex symbols, or are all PRACH opportunities in non-full-duplex symbols.

[0123] As an embodiment, when a PRACH opportunity occupies at least one full-duplex symbol in the time domain, this PRACH opportunity is a PRACH opportunity in a full-duplex symbol; when a PRACH opportunity only occupies a non-full-duplex symbol in the time domain, this PRACH opportunity is a PRACH opportunity in a non-full-duplex symbol.

[0124] As an embodiment, when a PRACH opportunity includes at least one full-duplex symbol in the time domain, this PRACH opportunity is a PRACH opportunity in a full-duplex symbol; when a PRACH opportunity includes only non-full-duplex symbols in the time domain, this PRACH opportunity is a PRACH opportunity in a non-full-duplex symbol.

[0125] As an embodiment, in the present application: a PRACH opportunity is either within full-duplex symbols or within non-full-duplex symbols.

[0126] As an embodiment, the PRACH opportunities in full-duplex symbols are within full-duplex symbols, and the PRACH opportunities in non-full-duplex symbols are within non-full-duplex symbols.

[0127] As an embodiment, the first node determines whether the continuous PRACH opportunity to which the first SSB is mapped is a PRACH opportunity in a full-duplex symbol or a PRACH opportunity in a non-full-duplex symbol.

[0128] As an embodiment, the consecutive PRACH opportunities mapped to the first SSB are all PRACH opportunities in full-duplex symbols, and the next available PRACH opportunity is a PRACH opportunity in a full-duplex symbol; or, the consecutive PRACH opportunities mapped to the first SSB are all PRACH opportunities in non-full-duplex symbols, and the next available PRACH opportunity is a PRACH opportunity in a non-full-duplex symbol.

[0129] As an embodiment, before the next available PRACH opportunity, there is no PRACH opportunity available for the random access procedure initiated by the first PDCCH.

[0130] As an embodiment, the second symbol set is a set of symbols occupied by the first PRACH opportunity in the time domain.

[0131] As an embodiment, in order to determine the first PRACH opportunity, the first node needs to determine the next available PRACH opportunity; the next available PRACH opportunity at least satisfies: the time between the last symbol of the first PDCCH and the first symbol of the next available PRACH opportunity is not less than the reference time.

[0132] As a sub-embodiment of the above embodiment, the first node selects a PRACH opportunity set from the first PRACH opportunity set and the second PRACH opportunity set according to a first probability distribution, and the continuous PRACH opportunities mapped to the first SSB are determined from the selected PRACH opportunity set; the PRACH opportunities in the first PRACH opportunity set are all PRACH opportunities in full-duplex symbols, and the PRACH opportunities in the second PRACH opportunity set are all PRACH opportunities in non-full-duplex symbols; in the first probability distribution, the probability of the first PRACH opportunity set being selected is P, and the probability of the second PRACH opportunity set being selected is 1-P, and P is predefined or configurable.

[0133] As an embodiment, the reference time and the first time component are linearly correlated; in order to determine the first PRACH opportunity, the first node needs to determine the next available PRACH opportunity; the next available PRACH opportunity satisfies at least one of the following conditions: (1) the next available PRACH opportunity is a PRACH opportunity in a full-duplex symbol, the time between the last symbol of the first PDCCH and the first symbol of the next available PRACH opportunity is not less than the reference time, and the first time component is greater than 0; (2) the next available PRACH opportunity is a PRACH opportunity in a non-full-duplex symbol, the time between the last symbol of the first PDCCH and the first symbol of the next available PRACH opportunity is not less than the reference time, and the first time component is equal to 0.

[0134] As a sub-embodiment of the above embodiment, the symbols in the first symbol set are all non-full-duplex symbols.

[0135] As an embodiment, the reference time and the first time component are linearly correlated; in order to determine the first PRACH opportunity, the first node needs to determine the next available PRACH opportunity; the next available PRACH opportunity satisfies at least one of the following conditions: (1) the next available PRACH opportunity is a PRACH opportunity in a full-duplex symbol, the time between the last symbol of the first PDCCH and the first symbol of the next available PRACH opportunity is not less than the reference time, and the first time component is equal to 0; (2) the next available PRACH opportunity is a PRACH opportunity in a non-full-duplex symbol, the time between the last symbol of the first PDCCH and the first symbol of the next available PRACH opportunity is not less than the reference time, and the first time component is greater than 0.

[0136] As a sub-embodiment of the above embodiment, at least one symbol in the first symbol set is a full-duplex symbol.

[0137] As an embodiment, the reference time is in msec (milliseconds).

[0138] As an embodiment, the reference time depends on at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set.

[0139] As an embodiment, the reference time is related to both the symbol type of the symbols in the first symbol set and the symbol type of the symbols in the second symbol set.

[0140] As an embodiment, the reference time depends on the symbol type of the symbols in the first symbol set and the symbol type of the symbols in the second symbol set.

[0141] As an embodiment, the reference time is related to the symbol type of the symbols in the second symbol set.

[0142] As an embodiment, the reference time depends on the symbol type of the symbols in the second symbol set.

[0143] As an embodiment, the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, including: the reference time and the first time component are linearly related, and whether the first time component is equal to 0 is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set.

[0144] As an embodiment, the reference time and the first time component are linearly related, including: the reference time is the sum of multiple time components, and the first time component is one of the multiple time components.

[0145] As an embodiment, whether the first time component is equal to 0 is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set.

[0146] As an embodiment, when at least one symbol in the second symbol set is a full-duplex symbol, the reference time is equal to 3.5 times the number of symbols in the second symbol set rounded down; when the symbols in the second symbol set are all non-full-duplex symbols, the reference time is equal to the sum of the square of the number of full-duplex symbols in the first symbol set and 18 modulo 55.

[0147] As an embodiment, the symbol type includes full-duplex and non-full-duplex, including: the symbol type of a symbol is one of full-duplex and non-full-duplex.

[0148] As an embodiment, the symbol type of a full-duplex symbol is full-duplex, and the symbol type of a non-full-duplex symbol is non-full-duplex.

[0149] As an embodiment, there is no symbol that is both a full-duplex symbol and a non-full-duplex symbol.

[0150] As an embodiment, when a symbol is indicated by uplink and downlink TDD configuration signaling as downlink and can be used for uplink transmission, the symbol is a full-duplex symbol.

[0151] As an embodiment, the benefits of the above method include: facilitating improvement of uplink capacity.

[0152] As an embodiment, when a symbol is indicated as uplink by uplink / downlink TDD configuration signaling, the symbol is a non-full-duplex symbol.

[0153] As an embodiment, when a symbol is configured to be usable for full-duplex operation, the symbol is a full-duplex symbol; when a symbol is configured not to be used for full-duplex operation, the symbol is a non-full-duplex symbol.

[0154] As an embodiment, when a symbol is configured to be usable for full-duplex operation, the symbol is a full-duplex symbol; when a symbol is not configured to be usable for full-duplex operation, the symbol is a non-full-duplex symbol.

[0155] As an embodiment, the symbols used for SBFD operation are full-duplex symbols, not non-full-duplex symbols.

[0156] As an embodiment, the symbols not used for SBFD operation are non-full-duplex symbols, not full-duplex symbols.

[0157] As an embodiment, SBFD symbols are full-duplex symbols, and non-SBFD symbols are non-full-duplex symbols.

[0158] As an embodiment, all symbols in a full-duplex time slot are full-duplex symbols.

[0159] As an embodiment, all symbols in a non-full-duplex time slot are non-full-duplex symbols.

[0160] Example 2

[0161] Embodiment 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in FIG2 . FIG2 illustrates a network architecture 200 of a 5G NR (New Radio) / LTE (Long-Term Evolution) / LTE-A (Long-Term Evolution Advanced) system. The 5G NR / LTE / LTE-A network architecture 200 may be referred to as a 5G System (5G System) / EPS (Evolved Packet System) 200 or some other appropriate terminology. The 5GS / EPS 200 includes at least one of a UE (User Equipment) 201, a RAN (Radio Access Network) 202, a 5G Core Network (5G Core Network) / EPC (Evolved Packet Core) 210, an HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and an Internet service 230. 5GS / EPS can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown, 5GS / EPS provides packet-switched services, but those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. RAN includes node 203 and other nodes 204. Node 203 provides user and control plane protocol termination towards UE 201. Node 203 can be connected to other nodes 204 via an Xn interface (e.g., backhaul) / X2 interface. Node 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 Point), or some other appropriate terminology. Node 203 provides an access point to 5GC / EPC 210 for UE 201.Examples of UE 201 include a cellular phone, a smartphone, a Session Initiation Protocol (SIP) phone, a laptop computer, a personal digital assistant (PDA), a satellite radio, non-terrestrial base station communications, satellite mobile communications, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a drone, an aircraft, a narrowband Internet of Things device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similarly functional device. Those skilled in the art may also refer to UE 201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. Node 203 connects to the 5GC / EPC 210 via the S1 / NG interface. The 5GC / EPC 210 includes the MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MMEs / AMFs / SMFs 214, the S-GW (Service Gateway) / UPF (User Plane Function) 212, and the P-GW (Packet Data Network Gateway) / UPF 213. The MME / AMF / SMF 211 is the control node that handles signaling between the UE 201 and the 5GC / EPC 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through the S-GW / UPF 212, which itself is connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF 213 is connected to the Internet Services 230. The Internet Services 230 includes the operator's corresponding Internet Protocol services, which may include the Internet, Intranet, IMS (IP Multimedia Subsystem), and packet switching services.

[0162] As an embodiment, the UE201 corresponds to the first node in this application.

[0163] As an embodiment, the gNB203 corresponds to the second node in this application.

[0164] As an embodiment, the UE201 corresponds to the first node in this application, and the gNB203 corresponds to the second node in this application.

[0165] As an embodiment, the gNB203 is a macrocellular base station.

[0166] As an embodiment, the gNB203 is a micro cell base station.

[0167] As an embodiment, the gNB203 is a picocell (PicoCell) base station.

[0168] As an embodiment, the gNB203 is a home base station (Femtocell).

[0169] As an embodiment, the gNB203 is a base station device that supports large delay difference.

[0170] As an embodiment, the gNB203 is a flying platform device.

[0171] As an embodiment, the gNB203 is a satellite device.

[0172] Example 3

[0173] Embodiment 3 illustrates a schematic diagram of an embodiment of a radio protocol architecture for a user plane and a control plane according to the present application, as shown in FIG3 . FIG3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300. FIG3 illustrates the radio protocol architecture for a first communication node device (a UE, a gNB, or an RSU (Roadside Unit) in a V2X (Vehicle to Everything) network, an onboard device, or an onboard communication module) and a second communication node device (a gNB, a UE, or an RSU in a V2X network, an onboard device, or an onboard communication module), or the control plane 300 between two UEs using three layers: Layer 1 (L1), Layer 2 (L2), and Layer 3 (L3). L1 is the lowest layer and implements various PHY (physical layer) signal processing functions. L1 will be referred to herein as PHY 301. Layer 2 (L2 layer) 305 is above PHY301 and is responsible for the link between the first communication node device and the second communication node device and the two UEs through PHY301. L2 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. The PDCP sublayer 304 also provides security by encrypting data packets, and provides support for inter-zone mobility of the first communication node device between the second communication node devices. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ (Hybrid Automatic Repeat Request). The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell between first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in L3 of the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring lower layers using RRC signaling between the second communication node device and the first communication node device.The radio protocol architecture of the user plane 350 includes Layer 1 (L1) and Layer 2 (L2). The radio protocol architecture for the first and second communication node devices in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300, including the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355. However, the 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 the SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping QoS (Quality of Service) flows and data radio bearers (DRBs) to support service diversity. Although not shown, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., an IP (Internet Protocol) 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, a server, etc.).

[0174] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the first node in this application.

[0175] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the second node in this application.

[0176] As an embodiment, the uplink and downlink TDD configuration signaling in this application is generated in the RRC sublayer 306.

[0177] As an embodiment, the first PDCCH in this application is generated by the PHY301.

[0178] As an embodiment, the first PRACH in this application is generated in the PHY351.

[0179] As an embodiment, the first PRACH in this application is generated in the PHY301.

[0180] Example 4

[0181] Embodiment 4 shows a schematic diagram of a first communication device and a second communication device according to the present application, as shown in Figure 4. Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0182] The first communications device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 , and an antenna 420 .

[0183] The second communication device 450 includes a controller / processor 459 , a memory 460 , a data source 467 , a transmit processor 468 , a receive processor 456 , a multi-antenna transmit processor 457 , a multi-antenna receive processor 458 , a transmitter / receiver 454 and an antenna 452 .

[0184] During transmission from the first communication device 410 to the second communication device 450, upper layer data packets from the core network are provided to the controller / processor 475 at the first communication device 410. The controller / processor 475 implements L2 layer functionality. During 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 retransmission of 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). The transmit processor 416 performs coding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, as well as mapping signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), and M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming on the coded and modulated symbols to generate one or more spatial streams. The transmit processor 416 then maps each spatial stream to a subcarrier, multiplexes it with a reference signal (e.g., a pilot) in the time and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, which is then provided to a different antenna 420.

[0185] During 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 via its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream, which is provided to the receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various L1 signal processing functions. The multi-antenna receive processor 458 performs receive analog precoding / beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. The receive processor 456 converts the baseband multi-carrier symbol stream, after the receive analog precoding / beamforming operations, from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signal and reference signal are demultiplexed by the receive processor 456, where the reference signal is used for channel estimation. The data signal undergoes multi-antenna detection in the multi-antenna receive processor 458 to recover any spatial stream destined for the second communication device 450. The symbols on each spatial stream are demodulated and recovered in the receive processor 456, and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communications device 410 on 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 the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program code and data. The memory 460 may be referred to as a computer-readable medium. During transmission from the first communications device 410 to the second communications device 450, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 layer for L3 processing.

[0186] During transmission from the second communication device 450 to the first communication device 410, a data source 467 is used at the second communication device 450 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 functionality 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 retransmission of lost packets and signaling to the first communication device 410. The transmit processor 468 performs modulation mapping and channel coding, while the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming. The transmit processor 468 then modulates the resulting spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding and beamforming operations in the multi-antenna transmit processor 457, the stream is provided to different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a RF symbol stream before providing it to the antenna 452.

[0187] During transmission from the second communication device 450 to the first communication device 410, the functionality at the first communication device 410 is similar to the reception functionality at the second communication device 450 described for transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives RF signals via its corresponding antenna 420, converts the received RF signals into baseband signals, and provides the baseband signals to the multi-antenna receive processor 472 and the receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement L1 layer functionality. The controller / processor 475 implements L2 layer functionality. The controller / processor 475 may be associated with a memory 476 storing program codes and data. The memory 476 may be referred to as a computer-readable medium. During transmission from the second communication device 450 to the first communication device 410, the controller / processor 475 provides demultiplexing between transport 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 controller / processor 475 may be provided to the core network.

[0188] As an embodiment, the first node in the present application includes the second communication device 450 , and the second node in the present application includes the first communication device 410 .

[0189] As a sub-embodiment of the above embodiment, the first node is a user equipment, and the second node is a relay node.

[0190] As a sub-embodiment of the above embodiment, the first node is a user equipment, and the second node is a base station device.

[0191] As a sub-embodiment of the above embodiment, the first node is a relay node, and the second node is a base station device.

[0192] As an 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 together with the at least one processor. The second communication device 450 device at least: receives a first PDCCH, a first symbol set is used for receiving the first PDCCH; sends a first PRACH, a second symbol set is used for sending the first PRACH, and the first PDCCH triggers the sending of the first PRACH; wherein the time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full duplex and non-full duplex.

[0193] As a sub-embodiment of the above embodiment, the second communication device 450 corresponds to the first node in this application.

[0194] As an embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates actions when executed by at least one processor, the actions including: receiving a first PDCCH, a first symbol set being used for receiving the first PDCCH; sending a first PRACH, a second symbol set being used for sending the first PRACH, the first PDCCH triggering the sending of the first PRACH; wherein the time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, the reference time being related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol types include full-duplex and non-full-duplex.

[0195] As a sub-embodiment of the above embodiment, the second communication device 450 corresponds to the first node in this application.

[0196] As an 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 together with the at least one processor. The first communication device 410 device at least: sends a first PDCCH, a first symbol set is used for sending the first PDCCH, and the first PDCCH triggers the sending of a first PRACH; receives the first PRACH, and a second symbol set is used for receiving the first PRACH; wherein the time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full duplex and non-full duplex.

[0197] As a sub-embodiment of the above embodiment, the first communication device 410 corresponds to the second node in this application.

[0198] As an embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generates actions when executed by at least one processor, the actions including: sending a first PDCCH, a first symbol set is used for sending the first PDCCH, and the first PDCCH triggers the sending of a first PRACH; receiving the first PRACH, a second symbol set is used for receiving the first PRACH; wherein the time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full-duplex and non-full-duplex.

[0199] As a sub-embodiment of the above embodiment, the first communication device 410 corresponds to the second node in this application.

[0200] As an embodiment, 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, the data source 467} is used to receive the uplink and downlink TDD configuration signaling in this application.

[0201] As an embodiment, at least one of {the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller / processor 475, the memory 476} is used to send the uplink and downlink TDD configuration signaling in this application.

[0202] As an embodiment, at least one of {the antenna 452, the receiver 454, the multi-antenna reception processor 458, the reception processor 456, the controller / processor 459, the memory 460, the data source 467} is used to receive the first PDCCH in this application.

[0203] As an embodiment, at least one of {the antenna 420, the transmitter 418, the multi-antenna transmit processor 471, the transmit processor 416, the controller / processor 475, the memory 476} is used to send the first PDCCH in this application.

[0204] As an embodiment, at least one of {the antenna 452, the transmitter 454, the multi-antenna transmit processor 457, the transmit processor 468, the controller / processor 459, the memory 460, the data source 467} is used to send the first PRACH in this application.

[0205] As an embodiment, at least one of {the antenna 420, the receiver 418, the multi-antenna reception processor 472, the reception processor 470, the controller / processor 475, and the memory 476} is used to receive the first PRACH in this application.

[0206] Example 5

[0207] Embodiment 5 illustrates a signal transmission flow chart according to an embodiment of the present application, as shown in FIG5. In FIG5, the first node U1 and the second node U2 communicate with each other via an air interface.

[0208] The first node U1 receives a first PDCCH in step S511 and sends a first PRACH in step S512.

[0209] The second node U2 sends a first PDCCH in step S521 and receives a first PRACH in step S522.

[0210] In embodiment 5, the first symbol set is used for receiving the first PDCCH; the second symbol set is used for sending the first PRACH, and the first PDCCH triggers the sending of the first PRACH; the time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than the reference time, the reference time and the first time component are linearly related, and whether the first time component is equal to 0 is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full-duplex and non-full-duplex; when a symbol is indicated as downlink by uplink and downlink TDD configuration signaling and can be used for uplink transmission, this symbol is a full-duplex symbol; when a symbol is indicated as uplink by uplink and downlink TDD configuration signaling, this symbol is a non-full-duplex symbol; the uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

[0211] As a sub-embodiment of Example 5, when at least one symbol in the second symbol set is a full-duplex symbol, the first time component is greater than 0; when all symbols in the second symbol set are non-full-duplex symbols, the first time component is equal to 0.

[0212] As a sub-embodiment of embodiment 5, when at least one symbol in the first symbol set is a full-duplex symbol and at least one symbol in the second symbol set is a full-duplex symbol, or when all symbols in the first symbol set are non-full-duplex symbols and all symbols in the second symbol set are non-full-duplex symbols: the first time component is equal to 0;

[0213] When at least one symbol in the first symbol set is a full-duplex symbol and the symbols in the second symbol set are all non-full-duplex symbols, or when the symbols in the first symbol set are all non-full-duplex symbols and at least one symbol in the second symbol set is a full-duplex symbol: the first time component is greater than 0.

[0214] As an embodiment, the first node U1 is the first node in this application.

[0215] As an embodiment, the second node U2 is the second node in this application.

[0216] As an embodiment, the first node U1 is a UE.

[0217] As an embodiment, the second node U2 is a base station.

[0218] As an embodiment, the air interface between the second node U2 and the first node U1 is a Uu interface.

[0219] As an embodiment, the air interface between the second node U2 and the first node U1 includes a cellular link.

[0220] As an embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between a base station device and a user equipment.

[0221] As an embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between a satellite device and a user equipment.

[0222] As an embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between a relay device and a user equipment.

[0223] As an embodiment, the second node sends the uplink and downlink TDD configuration signaling, and the first node receives the uplink and downlink TDD configuration signaling.

[0224] As an embodiment, the sending / receiving of the uplink / downlink TDD configuration signaling occurs before the sending / receiving of the first PDCCH.

[0225] Example 6

[0226] Embodiment 6 illustrates a schematic diagram illustrating the time between the last symbol of the first PDCCH and the first symbol of the first PRACH according to an embodiment of the present application, as shown in Figure 6. In Figure 6, a gray box represents a symbol used for receiving the first PDCCH, and a gray box with a bold border represents the last symbol of the first PDCCH; a blank box represents a symbol used for transmitting the first PRACH, and a blank box with a bold border represents the first symbol of the first PRACH.

[0227] As an embodiment, one or more symbols are used for the reception of the first PDCCH.

[0228] As an embodiment, multiple symbols are used for the transmission of the first PRACH.

[0229] As an embodiment, 2 symbols are used for the transmission of the first PRACH.

[0230] As an embodiment, more than 2 symbols are used for the transmission of the first PRACH.

[0231] As an embodiment, the time between the last symbol of the first PDCCH and the first symbol of the first PRACH is in msec (milliseconds).

[0232] As an embodiment, the time between the last symbol of the first PDCCH and the first symbol of the first PRACH is the time length between the last symbol of the first PDCCH and the first symbol of the first PRACH.

[0233] As an embodiment, the reference time is a time length in units of msec (milliseconds).

[0234] As an embodiment, the time between the last symbol of the first PDCCH and the first symbol of the first PRACH is greater than or equal to the reference time.

[0235] As an embodiment, the duration of one symbol used for the reception of the first PDCCH is equal to the duration of one symbol used for the transmission of the first PRACH.

[0236] As an embodiment, the duration of one symbol used for the reception of the first PDCCH is not equal to the duration of one symbol used for the transmission of the first PRACH.

[0237] Example 7

[0238] Example 7 illustrates a schematic diagram of reference time according to an embodiment of the present application, as shown in FIG7 .

[0239] In embodiment 7, the reference time is a sum of multiple time components, and the first time component is one of the multiple time components.

[0240] As an embodiment, the multiple time components are 6 time components.

[0241] As an embodiment, the multiple time components are 7 time components.

[0242] As an embodiment, the plurality of time components is at most 20 time components.

[0243] As an embodiment, the meanings of the multiple time components are all predefined.

[0244] As an embodiment, the multiple time components are all in units of msec (milliseconds).

[0245] As an embodiment, a time component other than the first time component among the multiple time components is one of 0.5 msec (for frequency range 1 (FR1)) or 0.25 msec (for frequency range 2 (FR2)).

[0246] As an embodiment, one of the multiple time components other than the first time component is a time duration of multiple symbols corresponding to a PUSCH preparation time of UE processing capability 1.

[0247] As an embodiment, for the PUSCH preparation time of the above-mentioned UE processing capability 1: assume that μ corresponds to the minimum SCS configuration between the SCS (Subcarrier spacing) configuration of the first PDCCH and the SCS configuration of the PRACH transmission, and refer to the corresponding relationship in Table 6.4-1 of Section 6.4 of 3GPP TS 38.214.

[0248] As an embodiment, one of the multiple time components other than the first time component is an uplink switching gap duration indicated by UE capabilities.

[0249] As an embodiment, a time component other than the first time component among the multiple time components is configurable.

[0250] As an embodiment, a time component other than the first time component among the multiple time components is greater than or equal to 0.

[0251] As an embodiment, one of the multiple time components other than the first time component is T BWPswitchDelay .

[0252] As an embodiment, one of the multiple time components other than the first time component is Δ RF / BB preparation.

[0253] As an embodiment, one of the multiple time components other than the first time component is T SSB .

[0254] Example 8

[0255] Example 8 illustrates a schematic diagram of whether the first time component is equal to 0 and is related to at least one of the symbol type of the symbol in the first symbol set or the symbol type of the symbol in the second symbol set according to an embodiment of the present application, as shown in Figure 8.

[0256] In Example 8, when at least one condition in the first condition set is met, the first time component is equal to 0; when all conditions in the first condition set are not met, the first time component is greater than 0; at least one condition in the first condition set is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set.

[0257] As an embodiment, the first condition set includes only one condition.

[0258] As an embodiment, the first condition set includes multiple conditions.

[0259] As an embodiment, the first set of conditions includes: at least one symbol in the first set of symbols is a full-duplex symbol and at least one symbol in the second set of symbols is a full-duplex symbol.

[0260] As an embodiment, the first condition set includes: the symbols in the first symbol set are all non-full-duplex symbols and the symbols in the second symbol set are all non-full-duplex symbols.

[0261] As an embodiment, the first condition set includes: the symbols in the second symbol set are all non-full-duplex symbols.

[0262] As an embodiment, the first condition set may also include other conditions.

[0263] As an embodiment, when at least one symbol in the second symbol set is a full-duplex symbol, the first time component is greater than 0; when all symbols in the second symbol set are non-full-duplex symbols, the first time component is equal to 0.

[0264] As an embodiment, at least one symbol in the first symbol set is a full-duplex symbol; when at least one symbol in the second symbol set is a full-duplex symbol, the first time component is equal to 0; when the symbols in the second symbol set are all non-full-duplex symbols, the first time component is greater than 0.

[0265] As an embodiment, the symbols in the first symbol set are all non-full-duplex symbols; when at least one symbol in the second symbol set is a full-duplex symbol, the first time component is greater than 0; when the symbols in the second symbol set are all non-full-duplex symbols, the first time component is equal to 0.

[0266] As an embodiment, when at least one symbol in the first symbol set is a full-duplex symbol and at least one symbol in the second symbol set is a full-duplex symbol, or, all symbols in the first symbol set are non-full-duplex symbols and all symbols in the second symbol set are non-full-duplex symbols: the first time component is equal to 0;

[0267] When at least one symbol in the first symbol set is a full-duplex symbol and the symbols in the second symbol set are all non-full-duplex symbols, or when the symbols in the first symbol set are all non-full-duplex symbols and at least one symbol in the second symbol set is a full-duplex symbol: the first time component is greater than 0.

[0268] As an embodiment, the first time component is greater than 0, and the first time component is configurable.

[0269] As an embodiment, the first time component is greater than 0, and the first time component is an indication of UE capability.

[0270] As an embodiment, the first time component is greater than 0, and the first time component is a predefined constant.

[0271] Example 9

[0272] Embodiment 9 illustrates a schematic diagram of full-duplex symbols and non-full-duplex symbols according to an embodiment of the present application, as shown in FIG9 .

[0273] In embodiment 9, when a symbol is indicated as downlink by uplink / downlink TDD configuration signaling and can be used for uplink transmission, this symbol is a full-duplex symbol; when a symbol is indicated as uplink by uplink / downlink TDD configuration signaling, this symbol is a non-full-duplex symbol.

[0274] As an embodiment, the symbols indicated as downlink by the uplink / downlink TDD configuration signaling and available for uplink transmission are full-duplex symbols.

[0275] As an embodiment, combined with the above features, the method disclosed in the present application is conducive to improving the PRACH transmission performance or resource utilization efficiency on the symbols indicated as downlink by the uplink and downlink TDD configuration signaling and available for uplink transmission.

[0276] As an embodiment, any full-duplex symbol is a symbol indicated as a downlink symbol by the uplink / downlink TDD configuration signaling and can be used for uplink transmission.

[0277] As an embodiment, there is a full-duplex symbol that is not indicated as a downlink symbol by the uplink / downlink TDD configuration signaling and can be used for uplink transmission.

[0278] As an embodiment, whether a flexible symbol is a full-duplex symbol is configurable.

[0279] As an embodiment, whether a flexible symbol is a full-duplex symbol is configured by RRC signaling.

[0280] As an embodiment, there is one flexible symbol configured as a full-duplex symbol.

[0281] As an embodiment, a symbol indicated as downlink by the uplink / downlink TDD configuration signaling and available for uplink transmission is indicated as downlink by the uplink / downlink TDD configuration signaling, and this symbol can be used for uplink transmission.

[0282] As an embodiment, there is at least one symbol indicated as a downlink symbol by the uplink / downlink TDD configuration signaling that is not a full-duplex symbol.

[0283] As an embodiment, whether a symbol indicated as a downlink symbol by the uplink / downlink TDD configuration signaling is a full-duplex symbol is configurable.

[0284] As an embodiment, whether a downlink symbol indicated by the uplink and downlink TDD configuration signaling is a full-duplex symbol is configured by RRC signaling.

[0285] As an embodiment, the symbols indicated by the uplink / downlink TDD configuration signaling as downlink symbols and unavailable for uplink transmission are not full-duplex symbols.

[0286] As an embodiment, the symbols indicated as downlink by the uplink / downlink TDD configuration signaling and available for uplink transmission are full-duplex symbols; the symbols indicated as downlink by the uplink / downlink TDD configuration signaling and unavailable for uplink transmission are non-full-duplex symbols.

[0287] As an embodiment, symbols indicated as uplink by the uplink / downlink TDD configuration signaling are not available for downlink transmission.

[0288] As an embodiment, the signal that can be used for uplink transmission includes: at least being used for PUSCH (Physical Uplink Shared CHannel, physical uplink shared channel) transmission (transmission(s)).

[0289] As an embodiment, combined with the above features, the method disclosed in this application is conducive to significantly improving the uplink capacity of the system.

[0290] As an embodiment, the signal that can be used for uplink transmission includes: at least signal that can be used for PUSCH and PUCCH (Physical Uplink Control CHannel, physical uplink control channel) transmission (transmission(s)).

[0291] As an embodiment, the data that can be used for uplink transmission includes: at least being used for PUSCH and PRACH transmission (transmission(s)).

[0292] As an embodiment, the data that can be used for uplink transmission includes: at least being used for PUCCH and PRACH transmission (transmission(s)).

[0293] As an embodiment, the data that can be used for uplink transmission includes: at least being used for PUSCH transmission, PUCCH transmission and PRACH transmission (transmission(s)).

[0294] As an embodiment, the signal that can be used for uplink transmission includes: at least one of PUSCH transmission, PUCCH transmission, PRACH (Physical Random Access CHannel) transmission (transmission(s)) and SRS (Sounding Reference Signal) transmission (transmission(s)).

[0295] As an embodiment, the signal that can be used for uplink transmission includes: signal that can be used for at least two of PUSCH transmission, PUCCH transmission, PRACH transmission and SRS transmission.

[0296] As an embodiment, the signal that can be used for uplink transmission includes: signal that can be used for at least three of PUSCH transmission, PUCCH transmission, PRACH transmission and SRS transmission.

[0297] As an embodiment, the signal that can be used for uplink transmission includes: signal that can be used for PUSCH transmission, PUCCH transmission, PRACH transmission and SRS transmission.

[0298] As an embodiment, the signal that can be used for uplink transmission includes: signal that can be used for UL-SCH (Uplink Shared Channel(s)) transmission.

[0299] As an embodiment, the uplink / downlink TDD (Time Division Duplex) configuration signaling is signaling indicating the link direction of the symbol.

[0300] As an embodiment, the uplink and downlink TDD configuration signaling indicates at least one symbol as downlink.

[0301] As an embodiment, the uplink and downlink TDD configuration signaling indicates at least one symbol as uplink.

[0302] As an embodiment, the uplink and downlink TDD configuration signaling is RRC signaling.

[0303] As an embodiment, the benefits of the above method include: high reliability of signaling transmission.

[0304] As an embodiment, the uplink and downlink TDD configuration signaling is tdd-UL-DL-ConfigurationCommon.

[0305] As an embodiment, the benefits of the above method include: the uplink and downlink TDD configuration signaling can be applicable to multiple users, which is conducive to reducing control signaling overhead.

[0306] As an embodiment, the uplink and downlink TDD configuration signaling is tdd-UL-DL-ConfigurationDedicated.

[0307] As an embodiment, the uplink and downlink TDD configuration signaling includes tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated.

[0308] As an embodiment, the uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

[0309] As an embodiment, the uplink and downlink TDD configuration signaling includes tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

[0310] As an embodiment, when a symbol is indicated as uplink / downlink by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigurationDedicated, this symbol is a symbol indicated as uplink / downlink by the uplink / downlink TDD configuration signaling.

[0311] Example 10

[0312] Embodiment 10 illustrates a structural block diagram of a processing device in a first node device, as shown in FIG10. In FIG10, the first node device processing device A00 includes a first receiver A01 and a first transmitter A02.

[0313] As an embodiment, the first node device A00 is a user equipment.

[0314] As an embodiment, the first node device A00 is a relay node.

[0315] As an embodiment, the first node device A00 is a vehicle-mounted communication device.

[0316] As an embodiment, the first node device A00 is a conventional user equipment.

[0317] As an embodiment, the first node device A00 is a UE with relevant configuration supporting full-duplex operation (non-overlapping sub-bands or other types).

[0318] As an embodiment, the first receiver A01 includes at least one of the antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, controller / processor 459, memory 460 and data source 467 in Figure 4 of the present application.

[0319] As an embodiment, the first receiver A01 includes at least the first five of the antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, controller / processor 459, memory 460 and data source 467 in FIG4 of the present application.

[0320] As an embodiment, the first receiver A01 includes at least the first four of the antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, controller / processor 459, memory 460 and data source 467 in Figure 4 of the present application.

[0321] As an embodiment, the first receiver A01 includes at least the first three of the antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, controller / processor 459, memory 460 and data source 467 in Figure 4 of the present application.

[0322] As an embodiment, the first receiver A01 includes at least the first two of the antenna 452, receiver 454, multi-antenna receiving processor 458, receiving processor 456, controller / processor 459, memory 460 and data source 467 in Figure 4 of the present application.

[0323] As an embodiment, the first transmitter A02 includes at least one of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467 in FIG4 of the present application.

[0324] As an embodiment, the first transmitter A02 includes at least the first five of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467 in FIG4 of the present application.

[0325] As an embodiment, the first transmitter A02 includes at least the first four of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467 in FIG4 of the present application.

[0326] As an embodiment, the first transmitter A02 includes at least the first three of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467 in FIG4 of the present application.

[0327] As an embodiment, the first transmitter A02 includes at least the first two of the antenna 452, transmitter 454, multi-antenna transmit processor 457, transmit processor 468, controller / processor 459, memory 460 and data source 467 in FIG4 of the present application.

[0328] As an embodiment, the first receiver A01 receives a first PDCCH, and a first symbol set is used for receiving the first PDCCH; the first transmitter A02 sends a first PRACH, and a second symbol set is used for sending the first PRACH, and the first PDCCH triggers the sending of the first PRACH; wherein the time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full-duplex and non-full-duplex.

[0329] As an embodiment, the reference time is linearly related to the first time component, and whether the first time component is equal to 0 is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set.

[0330] As an embodiment, when at least one symbol in the second symbol set is a full-duplex symbol, the first time component is greater than 0; when all symbols in the second symbol set are non-full-duplex symbols, the first time component is equal to 0.

[0331] As an embodiment, when at least one symbol in the first symbol set is a full-duplex symbol and at least one symbol in the second symbol set is a full-duplex symbol, or, all symbols in the first symbol set are non-full-duplex symbols and all symbols in the second symbol set are non-full-duplex symbols: the first time component is equal to 0;

[0332] When at least one symbol in the first symbol set is a full-duplex symbol and the symbols in the second symbol set are all non-full-duplex symbols, or when the symbols in the first symbol set are all non-full-duplex symbols and at least one symbol in the second symbol set is a full-duplex symbol: the first time component is greater than 0.

[0333] As an embodiment, the first node selects a first PRACH opportunity and sends the first PRACH in the first PRACH opportunity; the selection of the first PRACH opportunity depends on an indication of the first PDCCH.

[0334] As an embodiment, when a symbol is indicated as downlink by uplink and downlink TDD configuration signaling and can be used for uplink transmission, this symbol is a full-duplex symbol; when a symbol is indicated as uplink by uplink and downlink TDD configuration signaling, this symbol is not a full-duplex symbol; when a symbol is not a full-duplex symbol, this symbol is a non-full-duplex symbol.

[0335] As an embodiment, the uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

[0336] Example 11

[0337] Embodiment 11 illustrates a structural block diagram of a processing device in a second node device, as shown in FIG11. In FIG11, the second node device processing device B00 includes a second transmitter B01 and a second receiver B02.

[0338] As an embodiment, the second node device B00 is a base station.

[0339] As an embodiment, the second node device B00 is a satellite device.

[0340] As an embodiment, the second node device B00 is a relay node.

[0341] As an embodiment, the second node device B00 is a base station supporting full-duplex operation (non-overlapping sub-bands or other types).

[0342] As an embodiment, the second node device B00 is one of a test device, a test equipment, and a test instrument.

[0343] As an embodiment, the second transmitter B01 includes at least one of the antenna 420, transmitter 418, multi-antenna transmission processor 471, transmission processor 416, controller / processor 475 and memory 476 in FIG. 4 of the present application.

[0344] As an embodiment, the second transmitter B01 includes at least the first five of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476 in FIG. 4 of the present application.

[0345] As an embodiment, the second transmitter B01 includes at least the first four of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476 in FIG. 4 of the present application.

[0346] As an embodiment, the second transmitter B01 includes at least the first three of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476 in FIG. 4 of the present application.

[0347] As an embodiment, the second transmitter B01 includes at least the first two of the antenna 420, transmitter 418, multi-antenna transmit processor 471, transmit processor 416, controller / processor 475 and memory 476 in FIG. 4 of the present application.

[0348] As an embodiment, the second receiver B02 includes at least one of the antenna 420, receiver 418, multi-antenna reception processor 472, reception processor 470, controller / processor 475 and memory 476 in FIG. 4 of the present application.

[0349] As an embodiment, the second receiver B02 includes at least the first five of the antenna 420, receiver 418, multi-antenna reception processor 472, reception processor 470, controller / processor 475 and memory 476 in FIG. 4 of the present application.

[0350] As an embodiment, the second receiver B02 includes at least the first four of the antenna 420, receiver 418, multi-antenna reception processor 472, reception processor 470, controller / processor 475 and memory 476 in FIG. 4 of the present application.

[0351] As an embodiment, the second receiver B02 includes at least the first three of the antenna 420, receiver 418, multi-antenna receiving processor 472, receiving processor 470, controller / processor 475 and memory 476 in FIG. 4 of the present application.

[0352] As an embodiment, the second receiver B02 includes at least the first two of the antenna 420, receiver 418, multi-antenna reception processor 472, reception processor 470, controller / processor 475 and memory 476 in FIG. 4 of the present application.

[0353] As an embodiment, the second transmitter B01 sends a first PDCCH, a first symbol set is used for sending the first PDCCH, and the first PDCCH triggers the sending of a first PRACH; the second receiver B02 receives the first PRACH, and a second symbol set is used for receiving the first PRACH; wherein the time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full-duplex and non-full-duplex.

[0354] As an embodiment, the reference time is linearly related to the first time component, and whether the first time component is equal to 0 is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set.

[0355] As an embodiment, when at least one symbol in the second symbol set is a full-duplex symbol, the first time component is greater than 0; when all symbols in the second symbol set are non-full-duplex symbols, the first time component is equal to 0.

[0356] As an embodiment, when at least one symbol in the first symbol set is a full-duplex symbol and at least one symbol in the second symbol set is a full-duplex symbol, or, all symbols in the first symbol set are non-full-duplex symbols and all symbols in the second symbol set are non-full-duplex symbols: the first time component is equal to 0;

[0357] When at least one symbol in the first symbol set is a full-duplex symbol and the symbols in the second symbol set are all non-full-duplex symbols, or when the symbols in the first symbol set are all non-full-duplex symbols and at least one symbol in the second symbol set is a full-duplex symbol: the first time component is greater than 0.

[0358] As an embodiment, the first PRACH is received in a first PRACH opportunity; the transmitter of the first PRACH determines the first PRACH opportunity based on an indication of the first PDCCH.

[0359] As an embodiment, when a symbol is indicated as downlink by uplink and downlink TDD configuration signaling and can be used for uplink transmission, this symbol is a full-duplex symbol; when a symbol is indicated as uplink by uplink and downlink TDD configuration signaling, this symbol is not a full-duplex symbol; when a symbol is not a full-duplex symbol, this symbol is a non-full-duplex symbol.

[0360] As an embodiment, the uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

[0361] Those skilled in the art will appreciate that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software functional module. This application is not limited to any specific form of combination of software and hardware. The user equipment, terminal and UE in this application include but are not limited to drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment, transportation vehicles, vehicles, RSUs, wireless sensors, internet cards, Internet of Things terminals, RFID (Radio Frequency Identification) terminals, NB-IoT (Narrow Band Internet of Things) terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base stations or system equipment in this application include but are not limited to macrocell base stations, microcell base stations, small cell base stations, home base stations, relay base stations, eNB (evolved Node B), gNB, TRP, GNSS (Global Navigation Satellite System), relay satellites, satellite base stations, aerial base stations, RSUs, drones, test equipment, such as transceivers or signaling testers that simulate some functions of base stations, and other wireless communication equipment.

[0362] Those skilled in the art will appreciate that the present invention may be implemented in other specific forms without departing from its core or essential characteristics. Therefore, the presently disclosed embodiments should be considered in all respects as illustrative and not restrictive. The scope of the invention is determined by the appended claims, not the foregoing description, and all modifications that come within the meaning and range of equivalents are intended to be embraced therein.

Claims

1. A first node used for wireless communication, characterized in that: include: A first receiver is configured to receive a first PDCCH, wherein the first symbol set is used for receiving the first PDCCH; A first transmitter is configured to transmit a first PRACH, where a second symbol set is used for transmitting the first PRACH, and the first PDCCH triggers the transmitting of the first PRACH; The time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full-duplex and non-full-duplex.

2. The first node according to claim 1, wherein: The reference time is linearly related to the first time component, and whether the first time component is equal to 0 is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set.

3. The first node according to claim 2, characterized in that When at least one symbol in the second symbol set is a full-duplex symbol, the first time component is greater than 0; when all symbols in the second symbol set are non-full-duplex symbols, the first time component is equal to 0.

4. The first node according to claim 2, characterized in that When at least one symbol in the first symbol set is a full-duplex symbol and at least one symbol in the second symbol set is a full-duplex symbol, or when all symbols in the first symbol set are non-full-duplex symbols and all symbols in the second symbol set are non-full-duplex symbols: the first time component is equal to 0; When at least one symbol in the first symbol set is a full-duplex symbol and the symbols in the second symbol set are all non-full-duplex symbols, or when the symbols in the first symbol set are all non-full-duplex symbols and at least one symbol in the second symbol set is a full-duplex symbol: the first time component is greater than 0.

5. The first node according to any one of claims 1 to 4, characterized in that: The first node selects a first PRACH opportunity and sends the first PRACH in the first PRACH opportunity; the selection of the first PRACH opportunity depends on an indication of the first PDCCH.

6. The first node according to any one of claims 1 to 5, characterized in that: When a symbol is indicated as downlink by uplink and downlink TDD configuration signaling and can be used for uplink transmission, this symbol is a full-duplex symbol; when a symbol is indicated as uplink by uplink and downlink TDD configuration signaling, this symbol is not a full-duplex symbol; when a symbol is not a full-duplex symbol, this symbol is a non-full-duplex symbol.

7. The first node according to claim 6, characterized in that The uplink and downlink TDD configuration signaling includes at least one of tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

8. A second node used for wireless communication, characterized in that: include: A second transmitter transmits a first PDCCH, where a first symbol set is used for transmitting the first PDCCH, and the first PDCCH triggers transmitting a first PRACH; a second receiver, receiving the first PRACH, wherein the second symbol set is used for receiving the first PRACH; The time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full-duplex and non-full-duplex.

9. A method in a first node for wireless communication, characterized in that: include: receiving a first PDCCH, where the first symbol set is used for receiving the first PDCCH; Sending a first PRACH, where the second symbol set is used for sending the first PRACH, and the first PDCCH triggers the sending of the first PRACH; The time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full-duplex and non-full-duplex.

10. A method used in a second node of wireless communication, characterized in that: include: Sending a first PDCCH, where a first symbol set is used for sending the first PDCCH, and the first PDCCH triggers sending a first PRACH; receiving the first PRACH, where the second symbol set is used for receiving the first PRACH; The time between the last symbol of the first PDCCH and the first symbol of the first PRACH is not less than a reference time, and the reference time is related to at least one of the symbol type of the symbols in the first symbol set or the symbol type of the symbols in the second symbol set, and the symbol type includes full-duplex and non-full-duplex.

Images