Method and apparatus used in communication node for wireless communication

Abstract

The present application discloses a method and apparatus used in a communication node for wireless communication. The communication node receives a first information block and a second information block, wherein the first information block indicates at least one full-duplex symbol, the second information block indicates a first RO set and a second RO set, and the first RO set comprises at least one RO for 4-step random access; and the communication node receives a third information block and sends a first PRACH in a target RO, the first PRACH belonging to a 2-step random access procedure, wherein the target RO belongs to a target RO set, and the target RO set is one of the first RO set or the second RO set; the target RO depends on a target mask index, and the target mask index is equal to a mask index corresponding to the target RO set among a first mask index or a second mask index; and the first RO set comprises at least one RO occupying, in the time domain, a full-duplex symbol indicated as downlink by a TDD uplink-downlink configuration. The present application improves random access performance.

Description

A method and apparatus for a communication node used in wireless communication

[0001] This application claims priority to Chinese Patent Application No. 202411180642.4, filed with the State Intellectual Property Office of China on August 26, 2024, entitled "A Method and Apparatus in a Communication Node for Wireless Communication", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to transmission methods and apparatus in wireless communication systems, and more particularly to transmission schemes and apparatus with flexible transmission direction configurations in wireless communication. Background Technology

[0003] The application scenarios of future wireless communication systems are becoming increasingly diversified, and different application scenarios place different performance requirements on the system. To meet the diverse performance needs of various application scenarios, the 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #72 plenary meeting decided to conduct research on New Radio (NR) technology (or 5G). The 3GPP RAN #75 plenary meeting approved the NR (New Radio) technology WI (Work Item), initiating standardization work for NR. The 3GPP RAN #86 plenary meeting decided to begin work on the NR Rel-17 SI (Study Item) and WI (Work Item), and the 3GPP RAN #94e plenary meeting initiated the NR Rel-18 SI and WI projects. The 3GPP RAN #102 plenary meeting decided to begin work on the NR Rel-19 SI and WI.

[0004] NR Rel-19 includes support for Subband Non-Overlapping Full Duplex (SBFD). SBFD is also one of the technologies that 6G may support. Summary of the Invention

[0005] In existing NR systems, spectrum resources are statically divided into FDD and TDD spectrum. For TDD spectrum, both base stations and user equipment operate in half-duplex mode. This half-duplex mode avoids self-interference and mitigates cross-link interference, but it also leads to decreased resource utilization and increased latency. To address these issues, supporting flexible duplex modes on either TDD or FDD spectrum becomes a possible solution.

[0006] This application discloses a solution to the problem of random access configuration in supporting flexible duplex modes. It should be noted that the description in this application uses flexible duplex mode as only a typical application scenario or example; this application is also applicable to 6G networks or other scenarios facing similar problems (e.g., scenarios where link direction changes, or other scenarios supporting multi-level configuration of transmission directions, or scenarios with more capable base stations or user equipment, such as scenarios supporting full-duplex on the same frequency), or for different application scenarios, such as eMBB, URLLC, non-terrestrial networks, inductively coupled networks, smart metasurfaces, and terahertz networks, achieving similar technical effects. Furthermore, using a unified solution for different scenarios (including but not limited to eMBB, URLLC, non-terrestrial networks, inductively coupled networks, smart metasurfaces, and terahertz networks) or different application parameters helps reduce hardware complexity and cost. Where there is no conflict, the terminal embodiments and features in the embodiments of this application can be applied to the base station of this application, and vice versa.

[0007] This application discloses a method for use in a terminal, including:

[0008] Receive a first information block and a second information block, the first information block indicating at least one full-duplex symbol, the second information block indicating a first RO set and a second RO set, the first RO set including at least one RO for 4-step random access, and the second RO set including at least one RO for 4-step random access.

[0009] Receive the third information block and send the first PRACH to the target RO. The first PRACH belongs to a 2-step random access procedure.

[0010] Wherein, the target RO belongs to a target RO set, which is one of the first RO set or the second RO set; the third information block indicates a first mask index and a second mask index, the target RO depends on the target mask index, and the target mask index is equal to the mask index corresponding to the target RO set, whichever is one of the first mask index or the second mask index; the first RO set includes at least one RO that occupies a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain, and the second RO set includes at least one RO that occupies a symbol indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain.

[0011] As an example, the first RO set and the second RO set correspond to the first mask index and the second mask index, respectively, realizing the shared RO configuration in the SBFD scenario. The target mask index indicates the subset of ROs in the target RO set that can be used in the 2-step random access process, which improves the probability of successful random access and has robustness and backward compatibility.

[0012] According to one aspect of this application, the above method is characterized in that a first SSB is received, the first SSB being associated with the target RO, the set of target ROs depending on the relationship between a first RSRP and a first threshold, the first RSRP being an RSRP for downlink path loss reference; and a second information block indicating the first threshold.

[0013] According to one aspect of this application, the above method is characterized in that a plurality of parameters respectively indicate the number of preambles for two-step random access for different RO sets; the random access preambles included in the first PRACH depend on one of the plurality of parameters corresponding to the target RO set; and the third information block indicates the plurality of parameters.

[0014] According to one aspect of this application, the above method is characterized in that the transmit power of the first PRACH depends on the target receive power of the first PRACH, the target receive power depends on the initial target receive power corresponding to the target RO set, and the second information block indicates the initial target receive power.

[0015] According to one aspect of this application, the above method is characterized in that a first PUSCH is sent in the target PO;

[0016] Wherein, the first PUSCH belongs to a 2-step random access procedure, the target PO is a PO associated with the first PRACH in the target PO set, and the third information block indicates the target PO set corresponding to the target RO set.

[0017] According to one aspect of this application, the above method is characterized in that a first capability parameter and a second capability parameter are transmitted.

[0018] The first capability parameter and the second capability parameter respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol.

[0019] According to one aspect of this application, the above method is characterized in that the ROs in the first RO set and the ROs in the second RO set are each mapped to a synchronous broadcast signal.

[0020] This application discloses a terminal, which includes: one or more processors and a memory;

[0021] The memory is coupled to the one or more processors, and the memory is used to store computer program code, which includes computer instructions. The one or more processors call the computer instructions to cause the terminal to execute the above-described method.

[0022] This application discloses a method for use in a base station, including:

[0023] Send a first information block and a second information block, the first information block indicating at least one full-duplex symbol, the second information block indicating a first RO set and a second RO set, the first RO set including at least one RO for 4-step random access, the second RO set including at least one RO for 4-step random access;

[0024] Send the third information block and receive the first PRACH in the target RO. The first PRACH belongs to a 2-step random access procedure.

[0025] Wherein, the target RO belongs to a target RO set, which is one of the first RO set or the second RO set; the third information block indicates a first mask index and a second mask index, the target RO depends on the target mask index, and the target mask index is equal to the mask index corresponding to the target RO set, whichever is one of the first mask index or the second mask index; the first RO set includes at least one RO that occupies a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain, and the second RO set includes at least one RO that occupies a symbol indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain.

[0026] According to one aspect of this application, the above method is characterized in that a first SSB is sent, the first SSB being associated with the target RO, the set of target ROs depending on the relationship between a first RSRP and a first threshold, the first RSRP being an RSRP for downlink path loss reference; and a second information block indicating the first threshold.

[0027] According to one aspect of this application, the above method is characterized in that a plurality of parameters respectively indicate the number of preambles for two-step random access for different RO sets; the random access preambles included in the first PRACH depend on one of the plurality of parameters corresponding to the target RO set; and the third information block indicates the plurality of parameters.

[0028] According to one aspect of this application, the above method is characterized in that the transmit power of the first PRACH depends on the target receive power of the first PRACH, the target receive power depends on the initial target receive power corresponding to the target RO set, and the second information block indicates the initial target receive power.

[0029] According to one aspect of this application, the above method is characterized in that a first PUSCH is received in the target PO;

[0030] Wherein, the first PUSCH belongs to a 2-step random access procedure, the target PO is a PO associated with the first PRACH in the target PO set, and the third information block indicates the target PO set corresponding to the target RO set.

[0031] According to one aspect of this application, the above method is characterized in that it receives a first capability parameter and a second capability parameter;

[0032] The first capability parameter and the second capability parameter respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol.

[0033] According to one aspect of this application, the above method is characterized in that the ROs in the first RO set and the ROs in the second RO set are each mapped to a synchronous broadcast signal.

[0034] This application discloses a base station, which includes: one or more processors and a memory;

[0035] The memory is coupled to the one or more processors, and the memory is used to store computer program code, which includes computer instructions. The one or more processors call the computer instructions to cause the base station to perform the above-described method.

[0036] As an example, this application has the following advantages, but is not limited to:

[0037] It supports random access in full-duplex scenarios, which can further increase uplink coverage and reduce transmission latency;

[0038] Improving the reliability and robustness of transmission helps to adapt to constantly changing scenarios;

[0039] Reduce resource waste and redundancy, and lower network costs. Attached Figure Description

[0040] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0041] Figure 1 illustrates a flowchart of a first information block, a second information block, a third information block, and a first PRACH according to an embodiment of this application;

[0042] Figure 2 shows a schematic diagram of a network architecture according to an embodiment of this application;

[0043] Figure 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application;

[0044] Figure 4 shows a schematic diagram of a terminal and a base station according to an embodiment of this application;

[0045] Figure 5 illustrates a flowchart of terminal and base station transmission according to an embodiment of this application;

[0046] Figure 6 shows a schematic diagram of a target RO set according to an embodiment of this application;

[0047] Figure 7 shows a schematic diagram of multiple parameters according to an embodiment of this application;

[0048] Figure 8 shows a schematic diagram of the target received power according to an embodiment of this application;

[0049] Figure 9 shows a schematic diagram of a target PO according to an embodiment of this application;

[0050] Figure 10 shows a schematic diagram of a first capability parameter and a second capability parameter according to an embodiment of this application;

[0051] Figure 11 shows a schematic diagram of the mapping between a first RO set and a second RO set and a synchronous broadcast signal according to an embodiment of this application;

[0052] Figure 12 shows a structural block diagram of a processing device for a terminal according to an embodiment of the present application;

[0053] Figure 13 shows a structural block diagram of a processing apparatus for a base station according to an embodiment of the present application. Detailed Implementation

[0054] The technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0055] Example 1

[0056] Example 1 illustrates a flowchart of a first information block, a second information block, a third information block, and a first PRACH according to an embodiment of this application, as shown in Figure 1. In Figure 1, each block represents a step. In particular, the order of the steps in the blocks does not represent a specific temporal relationship between the steps.

[0057] In Embodiment 1, the terminal in this application receives a first information block and a second information block in step 101. The first information block indicates at least one full-duplex symbol, and the second information block indicates a first RO set and a second RO set. The first RO set includes at least one RO for 4-step random access, and the second RO set includes at least one RO for 4-step random access. In step 102, the terminal receives a third information block and sends a first PRACH in a target RO. The first PRACH belongs to a 2-step random access procedure. The target RO belongs to a target RO set, which is either the first RO set or the second RO set. The third information block indicates a first mask index and a second mask index. The target RO depends on the target mask index, which is equal to the mask index corresponding to the target RO set, either the first mask index or the second mask index. The first RO set includes at least one RO that occupies a full-duplex symbol in the time domain and is indicated as downlink by TDD uplink / downlink configuration. The second RO set includes at least one RO that occupies a symbol in the time domain and is indicated as uplink or flexible by TDD uplink / downlink configuration.

[0058] As one embodiment, the first information block includes some or all of the fields included in an SIB.

[0059] As an example, the first information block is cell common.

[0060] As an example, the first information block is cell specific.

[0061] As an example, the first information block is group common.

[0062] As an example, the first information block is UE-specific or UE-dedicated.

[0063] As an example, the first information block is configured per subband.

[0064] As an example, the first information block is configured per bandwidth part (BWP).

[0065] As one example, the first information block includes some or all of the fields in IE "SBFDConfigDedicated-r19".

[0066] As one example, the first information block includes some or all of the fields in IE "SBFDConfigCommon-r19".

[0067] As one example, the first information block includes some or all of the fields in IE "SBFDConfig-r19".

[0068] As one example, the first information block includes some or all of the domains in the IE "ServingCellConfigCommon".

[0069] As one example, the first information block includes some or all of the fields in IE's "CellGroupConfig".

[0070] As one example, the first information block includes some or all of the fields in IE "SpCellConfig".

[0071] As one example, the first information block includes some or all of the domains in IE "SCellConfig".

[0072] As one example, the first information block includes some or all of the fields in the IE "ServingCellConfigCommonSIB".

[0073] As one example, the first information block includes some or all of the domains in the IE "ServingCellConfig".

[0074] As one example, the first information block includes some or all of the fields in IE "UplinkConfig".

[0075] As one embodiment, the first information block includes some or all of the domains in the IE "TDD-UL-DL-ConfigCommon".

[0076] As an example, the first information block is used to configure the time slots or symbols of SBFD (Subband non-overlapping Full Duplex).

[0077] As one example, the first information block is used to configure time slots or symbols that support full-duplex operation.

[0078] As an example, the first information block is configured with at least one of the SBFD's uplink subband (UL subband), downlink subband (DL subband), or guardband.

[0079] As an example, the full-duplex symbol is the SBFD symbol.

[0080] As an example, the full-duplex symbol is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0081] As an example, the full-duplex symbol is a time-domain symbol configured with SBFD.

[0082] As an example, the full-duplex symbol is the time-domain symbol configured in the time domain for the subbands of the SBFD.

[0083] As an example, the full-duplex symbol is a time-domain symbol that supports full-duplex operation.

[0084] As an example, the full-duplex symbol is the time-domain symbol applicable to SBFD.

[0085] As an example, the full-duplex symbol is a time-domain symbol capable of simultaneous uplink and downlink transmission.

[0086] As an example, the full-duplex symbol is a time-domain symbol that enables simultaneous uplink and downlink transmission on the network side (or base station side).

[0087] As an example, the full-duplex symbol is a time-domain symbol that enables simultaneous uplink and downlink transmission on both the network side (or base station side) and the user equipment side.

[0088] As an example, the full-duplex symbol is a time-domain symbol indicated (or provided) by the signaling configured for SBFD.

[0089] As an example, the full-duplex symbol is a symbol that can be transmitted uplink over the downlink symbol configured in "TDD-UL-DL-ConfigCommon".

[0090] As an example, only the downlink symbol is considered, which simplifies the system design.

[0091] As an example, the full-duplex symbol is a symbol that can be transmitted uplink over a downlink or flexible symbol configured in "TDD-UL-DL-ConfigCommon".

[0092] As an example, the full-duplex symbol is a symbol that is indicated as downlink by "tdd-UL-DL-ConfigCommon" and configured (or indicated) as an SBFD symbol, or a symbol that is indicated as flexible by "tdd-UL-DL-ConfigCommon" and configured (or indicated) as an SBFD symbol.

[0093] As an example, the full-duplex symbol is a symbol indicated as downlink by "tdd-UL-DL-ConfigCommon" and indicated (or provided) by the first information block, or a symbol indicated as flexible by "tdd-UL-DL-ConfigCommon" and indicated (or provided) by the first information block.

[0094] As an example, considering only "tdd-UL-DL-ConfigCommon" simplifies the design and reduces the standardization workload.

[0095] As an example, this approach considers both downlink and flexible symbols, expanding configuration flexibility.

[0096] As an example, the full-duplex symbol is a time-domain symbol configured with full-duplex sub-bands.

[0097] As an example, the full-duplex symbol is configured with a full-duplex sub-band in the frequency domain.

[0098] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: the first information block explicitly or implicitly indicates at least one full-duplex symbol.

[0099] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: all or part of the first information block is used to explicitly or implicitly indicate at least one full-duplex symbol.

[0100] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: the position or index of at least one full-duplex symbol in the time domain depends on the first information block.

[0101] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: the symbol indicated (or provided) by the first information block is a full-duplex symbol.

[0102] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: a symbol that overlaps in the time domain with the symbol indicated (or provided) by the first information block is a full-duplex symbol.

[0103] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: some or all of the cell-specific parameters in the first information block indicate at least one full-duplex symbol.

[0104] As one embodiment, “the first information block indicates at least one full-duplex symbol” includes: the first information block indicates at least one downlink symbol or flexible symbol indicated by the TDD uplink / downlink configuration as a full-duplex symbol.

[0105] As one embodiment, “the first information block indicates at least one full-duplex symbol” includes: the symbol indicated (or provided) by the first information block and indicated by the TDD uplink / downlink configuration as a downlink symbol or a flexible symbol is a full-duplex symbol.

[0106] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: a symbol that overlaps in the time domain with the symbol indicated (or provided) by the first information block and is indicated as downlink or flexible by TDD uplink / downlink configuration is a full-duplex symbol.

[0107] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: the first information block indicates the distribution of full-duplex symbols in the time domain.

[0108] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: the first information block indicates multiple full-duplex symbols.

[0109] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: the first information block indicates the distribution of SBFD symbols.

[0110] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: the first information block indicates the period of a set of full-duplex symbols.

[0111] As a supplementary embodiment of this example, the period of the set of full-duplex symbols indicated by the first information block is equal to the period of the TDD uplink / downlink configuration.

[0112] As an auxiliary embodiment of this embodiment, the period of the set of full-duplex symbols indicated by the first information block is equal to the sum of the periods of pattern 1 and pattern 2 of the TDD uplink / downlink configuration.

[0113] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: the first information block indicates the starting slot index, the starting symbol index within the starting slot, the ending slot index, and the starting ending index within the ending slot of at least one full-duplex symbol within a period time window.

[0114] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: the first information block indicates the start symbol of the set of full-duplex symbols.

[0115] As one embodiment, "the first information block indicates at least one full-duplex symbol" includes: the first information block indicates at least one full-duplex symbol from a periodic time window, the periodic time window including a plurality of consecutive time-domain symbols, the time length of the periodic time window being equal to the time slot format configuration period length.

[0116] As one embodiment, the second information block includes some or all of the fields included in an SIB.

[0117] As an example, the second information block is cell common.

[0118] As an example, the second information block is cell specific.

[0119] As an example, the second information block is group common.

[0120] As one embodiment, the second information block is configured per subband.

[0121] As one embodiment, the second information block is configured per carrier.

[0122] As an example, the second information block is configured per bandwidth part (BWP).

[0123] As one embodiment, the second information block includes some or all of the fields in IE "SIB1".

[0124] As one example, the second information block includes some or all of the domains in the IE "ServingCellConfigCommon".

[0125] As one embodiment, the second information block includes some or all of the fields in the IE "ServingCellConfigCommonSIB".

[0126] As one example, the second information block includes some or all of the fields in IE's "UplinkConfigCommon".

[0127] As one example, the second information block includes some or all of the fields in the IE "UplinkConfigCommonSIB".

[0128] As one example, the second information block includes some or all of the fields in IE "BWP-UplinkCommon".

[0129] As one example, the second information block includes some or all of the fields in the IE "RACH-ConfigCommon".

[0130] As one embodiment, the second information block includes some or all of the fields in the IE “RACH-ConfigGeneric”.

[0131] As one embodiment, the second information block includes some or all of the fields in IE "SBFDConfigCommon-r19".

[0132] As one embodiment, the second information block includes some or all of the fields in IE "SBFDConfig-r19".

[0133] As one example, the first RO set includes multiple ROs.

[0134] As an example, each RO in the first RO set is a PRACH (Physical Random Access Channel) opportunity.

[0135] As an example, each RO in the first RO set includes allocated or configured PRACH time-frequency resources.

[0136] As an example, each RO in the first RO set includes the time-frequency resources occupied by one of the first PRACH transmissions.

[0137] As an example, each RO in the first RO set is used to send a random access preamble sequence.

[0138] As an example, every two ROs in the first RO set are time-division multiplexed.

[0139] As an example, there are two ROs in the first RO set that include the same time-domain resource.

[0140] As an example, the first RO set contains two ROs that include different time-domain resources.

[0141] As an example, there are two frequency division multiplexed (FDM) PRACH opportunities in the first RO set.

[0142] As one embodiment, every two ROs in the first RO set are for the same preamble format. As a supplementary embodiment to the above, this approach offers the advantage of design simplicity.

[0143] As one example, the first set of ROs contains two ROs that target different leading formats. As a supplementary embodiment to the above example, this approach offers the advantage of increased flexibility.

[0144] As an example, each RO in the first RO set occupies at least one SBFD symbol in the time domain.

[0145] As an example, each RO in the first RO set occupies only SBFD symbols in the time domain.

[0146] As an example, each RO in the first RO set occupies only the SBFD symbol indicated as downlink by the TDD uplink / downlink configuration in the time domain.

[0147] As an example, in the first RO set, there exists an RO that occupies both SBFD symbols indicated as downlink by TDD uplink / downlink configuration and SBFD symbols indicated as flexible by TDD uplink / downlink configuration in the time domain, wherein the number of SBFD symbols occupied that are indicated as downlink by TDD uplink / downlink configuration is greater than or equal to 1.

[0148] As one embodiment, the second RO set includes multiple ROs.

[0149] As an example, each RO in the second RO set is a PRACH (Physical Random Access Channel) opportunity.

[0150] As one embodiment, each RO in the second RO set includes allocated or configured PRACH time-frequency resources.

[0151] As an example, each RO in the second RO set includes the time-frequency resources occupied by one of the first PRACH transmissions.

[0152] As an example, each RO in the second RO set is used to send a random access preamble sequence.

[0153] As an example, every two ROs in the second RO set are time-division multiplexed.

[0154] As an example, every two ROs in the second RO set include the same time-domain resources.

[0155] As an example, each pair of ROs in the second RO set includes different time-domain resources.

[0156] As an example, there are two frequency division multiplexed (FDM) PRACH opportunities in the second RO set.

[0157] As an example, each RO included in the second RO set is a legacy RO.

[0158] As an example, each RO included in the second RO set is an RO supported by versions prior to Release 19.

[0159] As an example, each RO included in the second RO set is an RO outside the first RO set.

[0160] As an example, each RO included in the second RO set is an RO that does not overlap with the downlink indicated by the TDD uplink / downlink configuration.

[0161] As an example, the second RO set and the first RO set are orthogonal.

[0162] As one embodiment, every two ROs in the second RO set are for the same leading format. As a supplementary embodiment to the above, this approach offers the advantage of design simplicity.

[0163] As one embodiment, the preamble format of one RO in the first RO set is different from the preamble format of one RO in the second RO set. As a supplementary embodiment to the above, this approach increases flexibility and optimizes coverage performance in the SBFD case.

[0164] As one embodiment, the preamble format for each RO in the first RO set is the same as the preamble format for each RO in the second RO set. As a supplementary embodiment to the above, this approach offers the advantage of simple design and reduced implementation complexity.

[0165] As an example, each RO in the second RO set occupies only non-SBFD symbols in the time domain.

[0166] As an example, the second RO set does not occupy SBFD symbols indicated as downlink by TDD uplink / downlink configuration.

[0167] As one embodiment, each RO in the second RO set occupies only the symbol indicated as uplink or flexible by the TDD uplink / downlink configuration in the time domain.

[0168] As one embodiment, each RO in the second RO set occupies a symbol in the time domain that is indicated as an uplink symbol by the TDD uplink / downlink configuration, a flexible non-SBFD symbol by the TDD uplink / downlink configuration, or a flexible SBFD symbol by the TDD uplink / downlink configuration.

[0169] As one embodiment, the technical feature "the second information block indicates the first RO set and the second RO set" includes: part or all of the second information block is used to explicitly or implicitly indicate the first RO set and the second RO set.

[0170] As one embodiment, the technical feature "the second information block indicates the first RO set and the second RO set" includes: the first RO set and the second RO set depend on the second information block.

[0171] As one embodiment, the technical feature "the second information block indicates the first RO set and the second RO set" includes: the second information block is used to determine the first RO set and the second RO set.

[0172] As one embodiment, the technical feature "the second information block indicates the first RO set and the second RO set" includes: the second information block indicates the time-frequency resources included by at least one RO in the first RO set, and the second information block indicates the time-frequency resources included by at least one RO in the second RO set.

[0173] As an example, the technical feature "the second information block indicates the first RO set and the second RO set" includes: the second information block indicates the number of ROs in the first RO set that are frequency-divided in the same time domain resource, and the second information block indicates the number of ROs in the second RO set that are frequency-divided in the same time domain resource.

[0174] As an example, the technical feature "the second information block indicates the first RO set and the second RO set" includes: the second information block indicates the starting frequency domain resource of the lowest PRACH opportunity in the frequency domain in the first RO set, and the second information block indicates the starting frequency domain resource of the lowest PRACH opportunity in the frequency domain in the second RO set.

[0175] As one embodiment, the technical feature "the second information block indicates the first RO set and the second RO set" includes: the second information block indicates a PRACH configuration index, which configures the first RO set and the second RO set.

[0176] As an example, the technical feature "the second information block indicates the first RO set and the second RO set" includes: the second information block indicates a PRACH configuration index, wherein the ROs configured by the PRACH configuration index located on full-duplex symbols indicated as downlink by TDD uplink / downlink configuration belong to the first RO set, and the ROs configured by the PRACH configuration index located on symbols indicated as flexible or uplink by TDD uplink / downlink configuration belong to the second RO set.

[0177] As one embodiment, the technical feature "the second information block indicates the first RO set and the second RO set" includes: the second information block indicates a PRACH configuration index, wherein the ROs configured by the PRACH configuration index to be located on full-duplex symbols indicated as downlink by TDD uplink / downlink configuration belong to the first RO set, and the ROs configured by the PRACH configuration index to be located on symbols indicated as uplink by TDD uplink / downlink configuration, symbols indicated as flexible non-SBFD by TDD uplink / downlink configuration, or symbols indicated as flexible SBFD by TDD uplink / downlink configuration belong to the second RO set.

[0178] As an example, the technical feature "the second information block indicates the first RO set and the second RO set" includes: the second information block indicates a PRACH configuration index, wherein the ROs configured by the PRACH configuration index that overlap with full-duplex symbols indicated as downlink by TDD uplink / downlink configuration belong to the first RO set, and the ROs configured by the PRACH configuration index that overlap with symbols indicated as flexible or uplink by TDD uplink / downlink configuration belong to the second RO set.

[0179] As one embodiment, the technical feature "the second information block indicates the first RO set and the second RO set" includes: the second information block indicates the first PRACH configuration index and the second PRACH configuration index respectively, the first PRACH configuration index configures the first RO set, and the second PRACH configuration index configures the second RO set.

[0180] As an example, the four-step random access procedure is a Type-1 random access procedure.

[0181] As an example, the four-step random access procedure is a Type-1 Layer 1 (L1) random access procedure.

[0182] As an example, the four-step random access process is a CBRA (Contention Based Random Access) process.

[0183] As an example, the four-step random access process is a CFRA (Contention Free Random Access) process.

[0184] As one embodiment, the technical feature "the first RO set includes at least one RO for 4-step random access" includes: the first RO set includes multiple ROs for 4-step random access.

[0185] As an example, the technical feature "the first RO set includes at least one RO for 4-step random access" includes: the first RO set consists of at least one RO for 4-step random access.

[0186] As one embodiment, the technical feature "the first RO set includes at least one RO for 4-step random access" includes: the first RO set includes only at least one RO for 4-step random access.

[0187] As an example, the technical feature "the first RO set includes at least one RO for a 4-step random access" includes: the first RO set includes at least one RO for a 4-step random access procedure.

[0188] As one embodiment, the technical feature "the first RO set includes at least one RO for 4-step random access" includes: at least one RO included in the first RO set is used in the 4-step random access process.

[0189] As an example, the technical feature “the first RO set includes at least one RO for 4-step random access” includes: sending Msg 1 (message 1) in the 4-step random access process on the ROs included in the first RO set.

[0190] As one embodiment, the technical feature "the second RO set includes at least one RO for 4-step random access" includes: the second RO set includes multiple ROs for 4-step random access.

[0191] As one embodiment, the technical feature "the second RO set includes at least one RO for 4-step random access" includes: the second RO set consists of at least one RO for 4-step random access.

[0192] As one embodiment, the technical feature "the second RO set includes at least one RO for 4-step random access" includes: the second RO set includes only at least one RO for 4-step random access.

[0193] As one embodiment, the technical feature "the second RO set includes at least one RO for a 4-step random access" includes: the at least one RO included in the second RO set is for a 4-step random access procedure.

[0194] As one embodiment, the technical feature "the second RO set includes at least one RO for 4-step random access" includes: at least one RO included in the second RO set is used in the 4-step random access procedure.

[0195] As one embodiment, the technical feature "the second RO set includes at least one RO for 4-step random access" includes: sending Msg 1 in the 4-step random access process on the ROs included in the second RO set.

[0196] As one embodiment, the third information block includes some or all of the fields included in an SIB.

[0197] As an example, the third information block is Cell Common.

[0198] As an example, the third information block is cell specific.

[0199] As an example, the third information block is group common.

[0200] As an example, the third information block is configured per subband.

[0201] As one example, the third information block is configured per carrier.

[0202] As an example, the third information block is configured per bandwidth part (BWP).

[0203] As one embodiment, the third information block includes some or all of the fields in IE "SIB1".

[0204] As one example, the third information block includes some or all of the domains in the IE "ServingCellConfigCommon".

[0205] As one example, the third information block includes some or all of the fields in the IE "ServingCellConfigCommonSIB".

[0206] As one example, the third information block includes some or all of the fields in IE's "UplinkConfigCommon".

[0207] As one example, the third information block includes some or all of the fields in the IE "UplinkConfigCommonSIB".

[0208] As one example, the third information block includes some or all of the fields in the IE "BWP-UplinkCommon".

[0209] As one example, the third information block includes some or all of the fields in the IE "MsgA-ConfigCommon".

[0210] As one example, the third information block includes some or all of the fields in the IE "RACH-ConfigCommonTwoStepRA".

[0211] As one example, the third information block includes some or all of the fields in IE “msgA-SSB-SharedRO-MaskIndex”.

[0212] As one example, the third information block includes some or all of the fields in IE “msgA-SSB-SharedRO-MaskIndex-SBFD”.

[0213] As one example, the third information block includes some or all of the fields in the IE “MsgA-PUSCH-Config”.

[0214] As one example, the third information block includes some or all of the fields in the IE “MsgA-PUSCH-Resource”.

[0215] As one example, the third information block includes some or all of the fields in IE "SBFDConfigCommon-r19".

[0216] As one example, the third information block includes some or all of the fields in IE "SBFDConfig-r19".

[0217] As one embodiment, the first PRACH is transmitted via an air interface or a wireless interface.

[0218] As an example, the first PRACH is a baseband signal or a radio frequency signal.

[0219] As an example, the first PRACH is MsgA(Message A)PRACH.

[0220] As an example, the first PRACH is a PRACH (physical random access channel) or is used to transmit PRACH.

[0221] As an example, the first PRACH is generated from a leader sequence.

[0222] As an example, the first PRACH is generated from a pseudo-random sequence.

[0223] As an example, the first PRACH is generated from a ZC (Zaddoff Chu) sequence.

[0224] As an example, the first PRACH includes or carries a random access preamble or a random access preamble code.

[0225] As an example, the first PRACH includes or carries a random access preamble sequence.

[0226] As an example, the first PRACH is used for initial random access.

[0227] As an example, "sending the first PRACH in the target RO" includes: the target RO being used to send (or being used to transmit) the first PRACH.

[0228] As an example, "sending the first PRACH in the target RO" includes: the target RO carrying the information of the first PRACH.

[0229] As an example, "sending a first PRACH in the target RO" includes: the first PRACH maps (or occupies) the time-frequency resources of the target RO.

[0230] As an example, "sending a first PRACH in the target RO" includes: the first PRACH overlaps with the time domain resources occupied by the target RO in the time domain.

[0231] As an example, the two-step random access procedure is a Type-2 random access procedure.

[0232] As an example, the two-step random access procedure is a Type-2 Layer 1 (L1) random access procedure.

[0233] As an example, the two-step random access procedure is a CBRA procedure.

[0234] As an example, the two-step random access process is a CFRA process.

[0235] As an example, the target RO set includes multiple ROs.

[0236] As an example, each RO in the target RO set is a PRACH (Physical Random Access Channel) opportunity.

[0237] As an example, each RO in the target RO set includes allocated or configured PRACH time-frequency resources.

[0238] As an example, each RO in the target RO set includes the time-frequency resources occupied by one PRACH transmission.

[0239] As an example, every two ROs in the target RO set are time-division multiplexed.

[0240] As an example, the target RO set contains two ROs that include the same time-domain resources.

[0241] As an example, the target RO set contains two ROs that include different time-domain resources.

[0242] As an example, there are two frequency division multiplexed (FDM) PRACH opportunities in the target RO set.

[0243] As one example, every two ROs in the target RO set are for the same preamble format. As a supplementary embodiment to the above example, this approach offers the advantage of design simplicity.

[0244] As one example, the target RO set contains two ROs targeting different leading formats. As a supplementary embodiment to the above example, this approach offers the advantage of increased flexibility.

[0245] As an example, each RO in the target RO set is indicated by a downlink SBFD symbol in the time domain occupancy by the TDD uplink / downlink configuration.

[0246] As an example, each RO in the target RO set occupies, in the time domain, an SBFD symbol indicated as downlink by the TDD uplink / downlink configuration, or simultaneously occupies both an SBFD symbol indicated as downlink by the TDD uplink / downlink configuration and an SBFD symbol indicated as flexible by the TDD uplink / downlink configuration.

[0247] As an example, each RO in the target RO set is indicated by the TDD uplink / downlink configuration as an uplink or flexible symbol in the time domain occupancy.

[0248] As an example, each RO in the target RO set occupies a symbol in the time domain that is indicated as an uplink symbol by the TDD uplink / downlink configuration, a flexible non-SBFD symbol by the TDD uplink / downlink configuration, or a flexible SBFD symbol by the TDD uplink / downlink configuration.

[0249] As an example, the technical feature "the target RO belongs to the target RO set" includes: the target RO set includes the target RO.

[0250] As an example, the technical feature "the target RO belongs to the target RO set" includes: the target RO is an RO included in the target RO set.

[0251] As an example, the technical feature "the target RO belongs to the target RO set" includes: the target RO is one of the multiple ROs included in the target RO set.

[0252] As an example, the technical feature "the target RO set is one of the first RO set or the second RO set" includes: the target RO set is the first RO set, or the target RO set is the second RO set.

[0253] As an example, the technical feature "the target RO set is one of the first RO set or the second RO set" includes: the target RO set includes only at least one RO in the first RO set, or the target RO set includes only at least one RO in the second RO set.

[0254] As an example, the technical feature "the third information block indicates the first mask index and the second mask index" includes: part or all of the third information block is used to explicitly or implicitly indicate the first mask index and the second mask index.

[0255] As an example, the technical feature "the third information block indicates the first mask index and the second mask index" includes: the first mask index and the second mask index depend on the third information block.

[0256] As one embodiment, the technical feature "the third information block indicates the first mask index and the second mask index" includes: the third information block is used to determine the first mask index and the second mask index.

[0257] As an example, the technical feature "the third information block indicates the first mask index and the second mask index" includes: the two fields included in the third information block respectively indicate the first mask index and the second mask index.

[0258] As an example, the technical feature "the third information block indicates the first mask index and the second mask index" includes: the field "msgA-SSB-SharedRO-MaskIndex" included in the third information block indicates the first mask index, and the field "msgA-SSB-SharedRO-MaskIndex-SBFD" included in the third information block indicates the second mask index.

[0259] As an example, the technical feature "the third information block indicates the first mask index and the second mask index" includes: the field "msgA-SSB-SharedRO-MaskIndex" included in the third information block indicates the second mask index, and the field "msgA-SSB-SharedRO-MaskIndex-SBFD" included in the third information block indicates the first mask index.

[0260] As an example, the first mask index is a mask index.

[0261] As an example, the first mask index indicates multiple shared ROs used for two-step random access.

[0262] As an example, the value of the first mask index is a non-negative integer.

[0263] As an example, the value of the first mask index is one of {0,1,…,15}.

[0264] As an example, the second mask index is a mask index.

[0265] As one embodiment, the second mask index indication is used for multiple shared ROs in a 2-step random access process.

[0266] As an example, the value of the second mask index is a non-negative integer.

[0267] As an example, the value of the second mask index is one of {0,1,…,15}.

[0268] As an example, the target mask index is a mask index.

[0269] As an example, the target mask index indication can be used to transmit multiple ROs of the first PRACH.

[0270] As an example, the value of the target mask index is a non-negative integer.

[0271] As an example, the value of the target mask index is one of {0, 1, ..., 15}.

[0272] As an example, the technical feature "the target RO depends on the target mask index" includes: the target mask index is used to determine the target RO.

[0273] As an example, the technical feature "the target RO depends on the target mask index" includes: the target RO and the target mask index are related.

[0274] As an example, the technical feature "the target RO depends on the target mask index" includes: the target RO belongs to at least one RO indicated by the target mask index.

[0275] As an example, the technical feature "the target RO depends on the target mask index" includes: the target RO is one of a plurality of ROs indicated by the target mask index.

[0276] As an example, the technical feature "the target RO depends on the target mask index" includes: the target mask index indicates a subset of ROs, the target RO is an RO in the subset of ROs, and the subset of ROs belongs to the set of target ROs.

[0277] As an example, the technical feature "the target RO depends on the target mask index" includes: the target mask index indicates a subset of ROs, the target RO being one of at least one RO in the subset of ROs associated with an SSB index, the subset of ROs belonging to the set of target ROs.

[0278] As an example, the technical feature "the target RO depends on the target mask index" includes: the value of the target mask index is used to determine a subset of ROs, the target RO is one of at least one RO in the subset of ROs associated with an SSB index, the subset of ROs belongs to the set of target ROs, and the value of the target mask index and the subset of ROs have a correspondence or mapping relationship according to a predefined table.

[0279] As an example, the technical feature "the target mask index is equal to the mask index corresponding to the target RO set, whichever is either the first mask index or the second mask index" includes: the target mask index is one of the first mask index or the second mask index.

[0280] As an example, the technical feature "the target mask index is equal to the mask index corresponding to the target RO set, whichever is either the first mask index or the second mask index" includes: the target mask index is equal to the first mask index, or the target mask index is equal to the second mask index.

[0281] As an example, the technical feature "the target mask index is equal to the mask index corresponding to the target RO set, whichever is either the first mask index or the second mask index" includes: the target mask index is the mask index corresponding to the target RO set.

[0282] As an example, the technical feature "the target mask index is equal to the mask index corresponding to the target RO set, whichever is either the first mask index or the second mask index" includes: the mask index corresponding to the target RO set is used to determine the target mask index.

[0283] As an example, the technical feature "the target mask index is equal to the mask index corresponding to the target RO set, whichever is either the first mask index or the second mask index" includes: the relationship between the target RO set and the first mask index and the second mask index is predefined or configured.

[0284] As an example, the technical feature "the target mask index is equal to the mask index corresponding to the target RO set, whichever is either the first mask index or the second mask index" includes: the relationship between the first RO set and the second RO set and the first mask index and the second mask index is predefined or configured.

[0285] As an example, the technical feature "the target mask index is equal to the mask index corresponding to the target RO set, whichever is either the first mask index or the second mask index" includes: the relationship between the first RO set and the second RO set and the first mask index and the second mask index is one-to-one.

[0286] As an example, the technical feature "the target mask index is equal to the mask index corresponding to the target RO set, whichever is either the first mask index or the second mask index" includes: the target mask index is the mask index configured in the same IE as the target RO set, whichever is either the first mask index or the second mask index.

[0287] As an example, the technical feature "the target mask index is equal to the mask index corresponding to the target RO set, whichever is either the first mask index or the second mask index" includes: the target mask index is the mask index configured in the same domain as the target RO set, whichever is either the first mask index or the second mask index.

[0288] As an example, the technical feature "the target mask index is equal to the mask index corresponding to the target RO set, whichever is either the first mask index or the second mask index" includes: the target mask index is the mask index indicated or configured for the target RO set, whichever is either the first mask index or the second mask index.

[0289] As an example, the technical feature "the target mask index is equal to the mask index corresponding to the target RO set, whichever is either the first mask index or the second mask index" includes: the target mask index is the mask index of the symbol type corresponding to the target RO set, whichever is either the first mask index or the second mask index.

[0290] As an example, the technical feature "the target mask index is equal to the mask index corresponding to the target RO set, whichever is either the first mask index or the second mask index" includes: when the target RO set is the first RO set, the target mask index is the first mask index; when the target RO set is the second RO set, the target mask index is the second mask index.

[0291] As an example, the technical feature "the target mask index is equal to the mask index corresponding to the target RO set, whichever is either the first mask index or the second mask index" includes: when the target RO set is the first RO set, the target mask index is the second mask index; when the target RO set is the second RO set, the target mask index is the first mask index.

[0292] As an example, the TDD uplink / downlink configuration is an uplink / downlink TDD configuration used to determine the time slot format.

[0293] As an example, the TDD uplink / downlink configuration includes at least configuration information indicating which symbols are downlink symbols, which symbols are flexible symbols, and which symbols are uplink symbols within a periodic time window.

[0294] As an example, the TDD uplink / downlink configuration is a higher-layer configuration that includes at least symbolic link direction indication information.

[0295] As an example, the TDD uplink / downlink configuration is an RRC layer configuration.

[0296] As an example, the TDD uplink / downlink configuration is a higher-level configuration.

[0297] As an example, the TDD uplink / downlink configuration also includes indication information of the subcarrier spacing used.

[0298] As an example, the TDD uplink / downlink configuration also includes indication information of the length of the periodic time window used.

[0299] As one example, the TDD uplink / downlink configuration includes some or all of the domains in the IE "tdd-UL-DL-ConfigCommon".

[0300] As one example, the TDD uplink / downlink configuration includes some or all of the domains in the IE "tdd-UL-DL-ConfigDedicated".

[0301] As one embodiment, the technical feature “the first RO set includes at least one RO that occupies a full-duplex symbol in the time domain and is indicated as downlink by the TDD uplink / downlink configuration” includes: the first RO set includes only at least one RO that occupies a full-duplex symbol in the time domain and is indicated as downlink by the TDD uplink / downlink configuration.

[0302] As an example, the technical feature “the first RO set includes at least one RO that occupies a full-duplex symbol in the time domain and is indicated as downlink by the TDD uplink / downlink configuration” includes: at least one RO that occupies a full-duplex symbol in the time domain and is indicated as downlink by the TDD uplink / downlink configuration belongs to the first RO set.

[0303] As an example, the technical feature “the first RO set includes at least one RO that occupies a full-duplex symbol in the time domain and is indicated as downlink by the TDD uplink / downlink configuration” includes: the first RO set includes at least one RO that occupies (or maps to) a full-duplex symbol in the time domain and is indicated as downlink by the TDD uplink / downlink configuration.

[0304] As an example, the technical feature “the first RO set includes at least one RO occupying a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain” includes: the first RO set includes at least one RO located on a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain.

[0305] As an example, the technical feature “the first RO set includes at least one RO occupying a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain” includes: the at least one RO included in the first RO set has overlap in the time domain and the full-duplex symbol indicated as downlink by TDD uplink / downlink configuration.

[0306] As an example, the technical feature “the first RO set includes at least one RO occupying a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain” includes: the at least one RO included in the first RO set partially or completely overlaps with a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain.

[0307] As one embodiment, the technical feature "the second RO set includes at least one RO that occupies a symbol in the time domain that is indicated as uplink or flexible by the TDD uplink / downlink configuration" includes: the second RO set includes at least one RO that occupies a symbol in the time domain that is indicated as uplink by the TDD uplink / downlink configuration, a full-duplex symbol that is indicated as flexible by the TDD uplink / downlink configuration, or a non-full-duplex symbol that is indicated as flexible by the TDD uplink / downlink configuration.

[0308] As one embodiment, the technical feature "the second RO set includes at least one RO whose time domain occupancy is indicated by the TDD uplink / downlink configuration as uplink or flexible" includes: the second RO set includes only at least one RO whose time domain occupancy is indicated by the TDD uplink / downlink configuration as uplink or flexible.

[0309] As one embodiment, the technical feature “the second RO set includes at least one RO whose time domain occupancy is indicated by TDD uplink / downlink configuration as uplink or flexible” includes: at least one RO whose time domain occupancy is indicated by TDD uplink / downlink configuration as uplink or flexible belongs to the second RO set.

[0310] As one embodiment, the technical feature “the second RO set includes at least one RO that occupies a symbol in the time domain and is indicated as uplink or flexible by the TDD uplink / downlink configuration” includes: the second RO set includes at least one RO that occupies (or maps to) a symbol in the time domain and is indicated as uplink or flexible by the TDD uplink / downlink configuration.

[0311] As one embodiment, the technical feature “the second RO set includes at least one RO occupying a symbol in the time domain that is indicated as uplink or flexible by the TDD uplink / downlink configuration” includes: the at least one RO included in the second RO set is located in the time domain on a symbol that is indicated as uplink or flexible by the TDD uplink / downlink configuration.

[0312] As one embodiment, the technical feature “the second RO set includes at least one RO occupying a symbol indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain” includes: the at least one RO included in the second RO set has overlap in the time domain and the symbol indicated as uplink or flexible by TDD uplink / downlink configuration.

[0313] As one embodiment, the technical feature “the second RO set includes at least one RO occupying a symbol indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain” includes: the at least one RO included in the second RO set partially or completely overlaps with the symbol indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain.

[0314] Example 2

[0315] Example 2 illustrates a schematic diagram of a network architecture according to an embodiment of this application, as shown in Figure 2.

[0316] Figure 2 illustrates the network architecture of LTE (Long-Term Evolution), LTE-A (Long-Term Evolution Advanced), and future 5G systems. The network architecture of LTE, LTE-A, and future 5G systems is referred to as EPS (Evolved Packet System). The 5G NR or LTE network architecture may be referred to as 5GS (5G System) / EPS 200 or some other suitable term. The 5GS / EPS 200 may include one or more UEs 201, a UE 241 communicating with UE 201 via a sidelink, an NG-RAN (Next Generation Radio Access Network) 202, a 5G-CN (5G Core Network) / EPC (Evolved Packet Core) 210, an HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and Internet services 230. The 5GS / EPS 200 may interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown in Figure 2, the 5GS / EPS 200 provides packet-switched services; however, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services. The NG-RAN 202 includes NR Node Bs (gNBs) 203 and other gNBs 204. gNB 203 provides user and control plane protocol termination to UE 201. gNB 203 can connect to other gNB 204 via the Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Service Set (BSS), Extended Service Set (ESS), TRP (Transmitter Receiver Point), or some other suitable terminology. gNB 203 provides UE 201 with access to 5G-CN / EPC 210.Examples of UE 201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband physical network devices, machine-type communication devices, land vehicles, automobiles, wearable devices, or any other similar functional devices. Those skilled in the art may also refer to UE 201 as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. gNB 203 connects to 5G-CN / EPC 210 via the S1 / NG interface. 5G-CN / EPC 210 includes MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MME / AMF / SMFs 214, S-GW (Service Gateway) / UPF (User Plane Function) 212, and P-GW (Packet Data Network Gateway) / UPF 213. MME / AMF / SMF 211 is the control node that handles signaling between UE 201 and 5G-CN / EPC 210. Generally, MME / AMF / SMF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through S-GW / UPF 212, which is itself connected to P-GW / UPF 213. P-GW provides UE IP address allocation and other functions. P-GW / UPF 213 is connected to Internet service 230. Internet service 230 includes operator-compliant Internet Protocol services, specifically including the Internet, intranet, IMS (IP Multimedia Subsystem), and packet switching services.

[0317] As an example, the UE201 corresponds to the terminal described in this application.

[0318] As an example, the UE201 supports flexible duplex mode transmission.

[0319] As an example, the gNB(eNB)201 corresponds to the base station in this application.

[0320] As an example, the gNB (eNB) 201 supports flexible duplex mode transmission.

[0321] Example 3

[0322] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for the user plane and control plane according to an embodiment of this application, as shown in Figure 3.

[0323] Figure 3 is a schematic diagram illustrating an embodiment of the radio protocol architecture for the user plane 350 and the control plane 300. Figure 3 shows the radio protocol architecture for the control plane 300, or 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. L2 305 sits above PHY 301 and is responsible for the link between the terminal and the base station, or between two UEs, via PHY 301. 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 base station. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. It also provides security through encrypted data packets and supports inter-base station mobility for terminals. The RLC sublayer 303 provides upper-layer packet segmentation and reassembly, retransmission of lost packets, and packet reordering to compensate for out-of-order reception due to HARQ (Hybrid Automatic Repeat reQuest process number). The MAC sublayer 302 provides multiplexing between logical and transport channels. It is also responsible for allocating various radio resources (e.g., resource blocks) within a cell among terminals. Furthermore, the MAC sublayer 302 handles 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 using RRC signaling between the base station and the terminal to configure the lower layer.The radio protocol architecture of user plane 350 includes Layer 1 (L1) and Layer 2 (L2). The radio protocol architecture for terminals and base stations in user plane 350 is largely the same as the corresponding layers and sublayers in control plane 300 for Physical Layer 351, PDCP sublayer 354 in L2 355, RLC sublayer 353 in L2 355, and MAC sublayer 352 in L2 355. However, PDCP sublayer 354 also provides header compression for upper-layer packets to reduce radio transmission overhead. L2 355 in user plane 350 also includes SDAP (Service Data Adaptation Protocol) sublayer 356. SDAP sublayer 356 is responsible for mapping between QoS (Quality of Service) streams and Data Radio Bearer (DRB) to support service diversity. Although not illustrated, the terminal may have several upper layers above L2 355, including a network layer (e.g., 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., remote UE, server, etc.).

[0324] As an example, the wireless protocol architecture in Figure 3 is applicable to the terminal described in this application.

[0325] As an example, the wireless protocol architecture in Figure 3 is applicable to the base station described in this application.

[0326] As an example, the first information block in this application is generated in RRC306, or MAC302, or MAC352, or PHY301, or PHY351.

[0327] As an example, the second information block in this application is generated in RRC306, or MAC302, or MAC352, or PHY301, or PHY351.

[0328] As an example, the third information block in this application is generated in RRC306, or MAC302, or MAC352, or PHY301, or PHY351.

[0329] As an example, the first PRACH in this application is generated in RRC306, or MAC302, or MAC352, or PHY301, or PHY351.

[0330] As an example, the first SSB in this application is generated in the RRC306, or MAC302, or MAC352, or PHY301, or PHY351.

[0331] As an example, the first PUSCH in this application is generated in RRC306, or MAC302, or MAC352, or PHY301, or PHY351.

[0332] As an example, the first capability parameter in this application is generated by the RRC306, or MAC302, or MAC352, or PHY301, or PHY351.

[0333] As an example, the second capability parameter in this application is generated in the RRC306, or MAC302, or MAC352, or PHY301, or PHY351.

[0334] Example 4

[0335] Example 4 illustrates a schematic diagram of a terminal and a base station according to an embodiment of this application, as shown in Figure 4.

[0336] The terminal (450) may include a controller / processor 490, a data source / buffer 480, a receiver processor 452, a transmitter / receiver 456 and a transmitter processor 455, wherein the transmitter / receiver 456 includes an antenna 460.

[0337] The base station (410) may include a controller / processor 440, a data source / buffer 430, a receiver processor 412, a transmitter / receiver 416 and a transmitter processor 415, the transmitter / receiver 416 including an antenna 420.

[0338] In the DL (Downlink), upper-layer packets are provided to the controller / processor 440. The controller / processor 440 implements the functions of Layer 2 and above. In the DL, the controller / processor 440 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the terminal 450 based on various priority metrics. The controller / processor 440 is also responsible for HARQ operation, retransmission of lost packets, and higher-layer signaling to the terminal 450. The higher-layer information carried by the first information block, second information block, third information block, and first SSB (when the first SSB carries higher-layer information) in this application is generated by the controller / processor 440. Transmit processor 415 implements various signal processing functions for the L1 layer (i.e., the physical layer), including encoding, interleaving, scrambling, modulation, power control / distribution, precoding, and physical layer control signaling generation. For example, physical layer signals carrying a first information block, physical layer signals carrying a second information block, physical layer signals carrying a third information block, and the first SSB are generated in transmit processor 415. The generated modulation symbols are divided into parallel streams, and each stream is mapped to a corresponding multicarrier subcarrier and / or multicarrier symbol. These are then mapped by transmit processor 415 to antenna 420 via transmitter 416 and transmitted as radio frequency signals. At the receiving end, each receiver 456 receives the radio frequency signal through its corresponding antenna 460. Each receiver 456 recovers the baseband information modulated onto the radio frequency carrier and provides the baseband information to receiver processor 452. Receiver processor 452 implements various signal reception processing functions for the L1 layer. The signal reception and processing function includes demodulating the physical layer signal carrying the first information block, the physical layer signal carrying the second information block, the physical layer signal carrying the third information block, and the first SSB using multi-carrier symbols in the multi-carrier symbol stream based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK)). Subsequently, it performs descrambling, decoding, and deinterleaving to recover the data or control transmitted by the base station 410 on the physical channel. The data and control signals are then provided to the controller / processor 490. The controller / processor 490 is responsible for Layer 2 and above, and it interprets higher-layer information. This includes interpreting the higher-layer information carried by the first information block, the second information block, the third information block, and the first SSB (when the first SSB carries higher-layer information). The controller / processor may be associated with a memory 480 that stores program code and data. The memory 480 may be referred to as computer-readable media.

[0339] In uplink (UL) transmission, similar to downlink transmission, the higher-layer information, including the first PRACH (when the first PRACH carries higher-layer information), the first PUSCH (when the first PUSCH carries higher-layer information), the first capability parameter (when the first capability parameter carries higher-layer information), and the second capability parameter (when the second capability parameter carries higher-layer information), is generated by the controller / processor 490 and then processed by the transmitter processor 455 for various signal transmission processing functions for the L1 layer (i.e., physical layer). The first PRACH, the first PUSCH, the first capability parameter, and the second capability parameter are mapped by the transmitter processor 455 to the antenna 460 and transmitted as radio frequency signals. The receiver 416 receives the radio frequency signals through its corresponding antenna 420. Each receiver 416 recovers the baseband information modulated onto the radio frequency carrier and provides the baseband information to the receiver processor 412. The receiver processor 412 implements various signal reception processing functions for the L1 layer (i.e., the physical layer), including receiving and processing the first PRACH, first PUSCH, first capability parameter, and second capability parameter as described in this application, and subsequently providing data and / or control signals to the controller / processor 440. The controller / processor 440 implements L2 layer functions, including interpreting higher-layer information such as the higher-layer information carried by the first PRACH (when the first signal carries higher-layer information), the first PUSCH (when the first PUSCH carries higher-layer information), the first capability parameter (when the first capability parameter carries higher-layer information), and the second capability parameter (when the second capability parameter carries higher-layer information). The controller / processor may be associated with a buffer 430 that stores program code and data. The buffer 430 may be a computer-readable medium.

[0340] As one embodiment, the terminal 450 device includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the terminal 450 device at least: receives a first information block and a second information block, the first information block indicating at least one full-duplex symbol, the second information block indicating a first RO set and a second RO set, the first RO set including at least one RO for 4-step random access, the second RO set including at least one RO for 4-step random access; receives a third information block and transmits a first PRACH in a target RO, the first... PRACH is a two-step random access procedure; wherein, the target RO belongs to a target RO set, which is one of the first RO set or the second RO set; the third information block indicates a first mask index and a second mask index, the target RO depends on the target mask index, and the target mask index is equal to the mask index corresponding to the target RO set, whichever is between the first mask index and the second mask index; the first RO set includes at least one RO that occupies a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain, and the second RO set includes at least one RO that occupies a symbol indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain.

[0341] As one embodiment, the terminal 450 device includes: a memory storing a computer-readable instruction program that generates actions when executed by at least one processor, the actions including: receiving a first information block and a second information block, the first information block indicating at least one full-duplex symbol, the second information block indicating a first RO set and a second RO set, the first RO set including at least one RO for 4-step random access, the second RO set including at least one RO for 4-step random access; receiving a third information block and transmitting a first PRACH in a target RO, the first PRACH belonging to a 2-step random access procedure; Wherein, the target RO belongs to a target RO set, which is one of the first RO set or the second RO set; the third information block indicates a first mask index and a second mask index, the target RO depends on the target mask index, and the target mask index is equal to the mask index corresponding to the target RO set, whichever is one of the first mask index or the second mask index; the first RO set includes at least one RO that occupies a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain, and the second RO set includes at least one RO that occupies a symbol indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain.

[0342] As one embodiment, the base station 410 device includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The base station 410 device at least: transmits a first information block and a second information block, the first information block indicating at least one full-duplex symbol, the second information block indicating a first RO set and a second RO set, the first RO set including at least one RO for 4-step random access, the second RO set including at least one RO for 4-step random access; transmits a third information block and receives a first PRACH in a target RO, the first PRACH belonging to a 2-step random access procedure; wherein, the target RO belongs to a target RO set, the target RO set being one of the first RO set or the second RO set; the third information block indicating a first mask index and a second mask index, the target RO depending on the target mask index, the target mask index being equal to the mask index corresponding to the target RO set, either the first mask index or the second mask index; the first RO set including at least one RO occupying a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain, the second RO set including at least one RO occupying a symbol indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain.

[0343] As one embodiment, the base station 410 includes: a memory storing a computer-readable instruction program that, when executed by at least one processor, produces actions including: transmitting a first information block and a second information block, the first information block indicating at least one full-duplex symbol, the second information block indicating a first RO set and a second RO set, the first RO set including at least one RO for 4-step random access, and the second RO set including at least one RO for 4-step random access; transmitting a third information block and receiving a first PRACH in a target RO, the first PRACH belonging to a 2-step random access procedure; In this context, the target RO belongs to a target RO set, which is either the first RO set or the second RO set; the third information block indicates a first mask index and a second mask index, the target RO depends on the target mask index, and the target mask index is equal to either the first mask index or the second mask index corresponding to the target RO set; the first RO set includes at least one RO that occupies a full-duplex symbol in the time domain and is indicated as downlink by the TDD uplink / downlink configuration, and the second RO set includes at least one RO that occupies a symbol in the time domain and is indicated as uplink or flexible by the TDD uplink / downlink configuration.

[0344] As an example, the terminal 450 is a user equipment (UE).

[0345] As an example, the terminal 450 is a user equipment that supports flexible duplex mode transmission.

[0346] As one embodiment, the base station 410 is a base station device (gNB / eNB).

[0347] As an example, the base station 410 is a base station device that supports flexible duplex mode transmission.

[0348] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used to receive the first information block in this application.

[0349] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used to receive the second information block in this application.

[0350] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used to receive the third information block in this application.

[0351] As one embodiment, receiver 456 (including antenna 460), receiver processor 452 and controller / processor 490 are used to receive the first SSB in this application.

[0352] As one embodiment, transmitter 456 (including antenna 460), transmitter processor 455 and controller / processor 490 are used to transmit the first PRACH in this application.

[0353] As one embodiment, transmitter 456 (including antenna 460), transmitter processor 455 and controller / processor 490 are used to transmit the first PUSCH in this application.

[0354] As one embodiment, transmitter 456 (including antenna 460), transmitter processor 455 and controller / processor 490 are used to transmit the first capability parameters in this application.

[0355] As one embodiment, transmitter 456 (including antenna 460), transmitter processor 455 and controller / processor 490 are used to transmit the second capability parameter in this application.

[0356] As one embodiment, transmitter 416 (including antenna 420), transmitter processor 415 and controller / processor 440 are used to transmit the first information block in this application.

[0357] As one embodiment, transmitter 416 (including antenna 420), transmitter processor 415 and controller / processor 440 are used to transmit the second information block in this application.

[0358] As one embodiment, transmitter 416 (including antenna 420), transmitter processor 415, and controller / processor 440 are used to transmit the third information block described in this application.

[0359] As one embodiment, transmitter 416 (including antenna 420), transmitter processor 415, and controller / processor 440 are used to transmit the first SSB in this application.

[0360] As one embodiment, receiver 416 (including antenna 420), receiver processor 412 and controller / processor 440 are used to receive the first PRACH in this application.

[0361] As one embodiment, receiver 416 (including antenna 420), receiver processor 412 and controller / processor 440 are used to receive the first PUSCH in this application.

[0362] As one embodiment, receiver 416 (including antenna 420), receiver processor 412 and controller / processor 440 are used to receive the first capability parameter in this application.

[0363] As one embodiment, receiver 416 (including antenna 420), receiver processor 412 and controller / processor 440 are used to receive the second capability parameter in this application.

[0364] Example 5

[0365] Example 5 illustrates a flowchart of terminal and base station transmission according to an embodiment of this application, as shown in Figure 5. In Figure 5, base station N500 is the sustaining base station of the serving cell of terminal U550. It should be noted that the order in this example does not limit the signal transmission order or the order of implementation in this application.

[0366] For base station N500, a first information block is sent in step S501, a second information block is sent in step S502, a third information block is sent in step S503, a first SSB is sent in step S504, a first PRACH is received in step S505, a first PUSCH is received in step S506, a first capability parameter is received in step S507, and a second capability parameter is received in step S508.

[0367] For terminal U550, in step S551, a first information block is received; in step S552, a second information block is received; in step S553, a third information block is received; in step S554, a first SSB is received; in step S555, a first PRACH is sent; in step S556, a first PUSCH is sent; in step S557, a first capability parameter is sent; and in step S558, a second capability parameter is sent.

[0368] In embodiment 5, a first information block and a second information block are received. The first information block indicates at least one full-duplex symbol, and the second information block indicates a first RO set and a second RO set. The first RO set includes at least one RO for 4-step random access, and the second RO set includes at least one RO for 4-step random access. A third information block is received and a first PRACH is transmitted in a target RO. The first PRACH belongs to a 2-step random access procedure. The target RO belongs to a target RO set, which is either the first RO set or the second RO set. The third information block indicates a first mask index and a second mask index. The target RO depends on the target mask index, which is equal to the mask index corresponding to the target RO set, either the first mask index or the second mask index. The first RO set includes at least one RO that occupies a full-duplex symbol in the time domain and is indicated as downlink by TDD uplink / downlink configuration. The second RO set includes at least one RO that occupies a symbol in the time domain and is indicated as uplink or flexible by TDD uplink / downlink configuration. Receive a first SSB, which is associated with the target RO; send a first PUSCH in the target PO; send a first capability parameter and a second capability parameter.

[0369] As one example, the first information block precedes the second information block.

[0370] As one example, the first information block follows the second information block.

[0371] As one example, the first information block precedes the third information block.

[0372] As an example, the first information block follows the third information block.

[0373] As one example, the first information block precedes the first capability parameter.

[0374] As one example, the first information block follows the first capability parameter.

[0375] As one example, the first information block precedes the second capability parameter.

[0376] As one example, the first information block follows the second capability parameter.

[0377] As one example, the second information block precedes the third information block.

[0378] As one example, the second information block follows the third information block.

[0379] As one example, the second information block precedes the first capability parameter.

[0380] As one embodiment, the second information block follows the first capability parameter.

[0381] As one example, the second information block precedes the second capability parameter.

[0382] As one embodiment, the second information block follows the second capability parameter.

[0383] As one example, the third information block precedes the first capability parameter.

[0384] As an example, the third information block follows the first capability parameter.

[0385] As an example, the third information block precedes the second capability parameter.

[0386] As one example, the third information block follows the second capability parameter.

[0387] As one example, the first capability parameter precedes the second capability parameter.

[0388] As one example, the first capability parameter follows the second capability parameter.

[0389] As one example, the first information block and the second information block are transmitted through the same physical channel.

[0390] As one embodiment, the first information block and the second information block respectively include different IEs or domains included in the same IE.

[0391] As one embodiment, the first information block, the second information block, and the third information block are transmitted through the same physical channel.

[0392] As one embodiment, the first information block, the second information block, and the third information block each include different IEs or domains included in the same IE.

[0393] As one embodiment, the first capability parameter is transmitted via an air interface or a wireless interface.

[0394] As an example, the first capability parameter is transmitted via PUSCH or PUCCH (Physical Uplink Control Channel).

[0395] As an example, the first capability parameter is used to indicate the capabilities of the terminal in this application.

[0396] As one embodiment, the first capability parameter includes the IE "Phy-ParametersFRX-Diff", or the first capability parameter includes the IE "UE-NR-Capability".

[0397] As one embodiment, the first capability parameter is per user equipment (per UE). As a supplementary embodiment of the above embodiment, transmitting the first capability parameter per user equipment can reduce standard complexity.

[0398] As one embodiment, the first capability parameter is per band. As a supplementary embodiment of the above embodiment, transmitting the first capability parameter per band can be optimized for different frequency bands, simplifying product implementation.

[0399] As one embodiment, the first capability parameter is per band combination. As a supplementary embodiment of the above embodiment, the transmission of the first capability parameter per band combination can be optimized for band combinations, achieving a balance between standard complexity and product implementation complexity.

[0400] As one embodiment, the first capability parameter is per feature set. As a supplementary embodiment of the above embodiment, transmitting the first capability parameter per feature set can optimize for features and reduce signaling overhead.

[0401] As one embodiment, the first capability parameter is per feature set and per component carrier. As a supplementary embodiment of the above embodiment, transmitting the first capability parameter per feature set and per component carrier can improve flexibility, reduce product implementation complexity, and reduce signaling overhead.

[0402] As an example, the first capability parameter has different parameter values ​​between FDD (Frequency Division Duplexing) and TDD (Time Division Duplexing).

[0403] As an example, the first capability parameter is applied only to TDD.

[0404] As one embodiment, the first capability parameter has different parameter values ​​across different frequency ranges (FR). As a supplementary embodiment of the above embodiment, having different parameter values ​​for different frequency ranges allows for optimization of product implementation for specific frequency ranges, improving flexibility.

[0405] As one embodiment, the first capability parameter has the same parameter value across different frequency ranges. As a supplementary embodiment of the above example, having the same parameter value across different frequency ranges can support a unified design and reduce standard complexity.

[0406] As one embodiment, the first capability parameter includes the IE "BandCombinationList", or the first capability parameter includes the IE "BandCombination", or the first capability parameter includes the IE "BandNR", or the first capability parameter includes the IE "FeatureSetUplink", or the first capability parameter includes the IE "FeatureSetUplinkPerCC", or the first capability parameter includes the IE "Phy-Parameters".

[0407] As an example, the first capability parameter includes the IE "RF-Parameters".

[0408] As one embodiment, the second capability parameter is transmitted via an air interface or a wireless interface.

[0409] As an example, the second capability parameter is transmitted via PUSCH or PUCCH (Physical Uplink Control Channel).

[0410] As an example, the second capability parameter is used to indicate the capabilities of the terminal in this application.

[0411] As one embodiment, the second capability parameter includes the IE "Phy-ParametersFRX-Diff", or the second capability parameter includes the IE "UE-NR-Capability".

[0412] As one embodiment, the second capability parameter is per user equipment (per UE). As a supplementary embodiment of the above embodiment, transmitting the second capability parameter per user equipment can reduce standard complexity.

[0413] As one embodiment, the second capability parameter is per band. As a supplementary embodiment of the above embodiment, transmitting the second capability parameter per band can be optimized for different frequency bands, simplifying product implementation.

[0414] As one embodiment, the second capability parameter is per band combination. As a supplementary embodiment of the above embodiment, the transmission of the second capability parameter per band combination can be optimized for band combinations, achieving a balance between standard complexity and product implementation complexity.

[0415] As one embodiment, the second capability parameter is per feature set. As a supplementary embodiment of the above embodiment, transmitting the second capability parameter per feature set can optimize for features and reduce signaling overhead.

[0416] As one embodiment, the second capability parameter is per feature set and per component carrier. As a supplementary embodiment of the above embodiment, transmitting the second capability parameter per feature set and per component carrier can improve flexibility, reduce product implementation complexity, and reduce signaling overhead.

[0417] As an example, the second capability parameter has different parameter values ​​between FDD (Frequency Division Duplexing) and TDD (Time Division Duplexing).

[0418] As an example, the second capability parameter is applied only to TDD.

[0419] As one embodiment, the second capability parameter has different parameter values ​​across different frequency ranges (FR). As a supplementary embodiment of the above embodiment, having different parameter values ​​for different frequency ranges allows for product optimization tailored to those frequency ranges, improving flexibility.

[0420] As one embodiment, the second capability parameter has the same parameter value across different frequency ranges. As a supplementary embodiment of the above example, having the same parameter value across different frequency ranges can support a unified design and reduce standard complexity.

[0421] As one embodiment, the second capability parameter includes the IE "BandCombinationList", or the second capability parameter includes the IE "BandCombination", or the second capability parameter includes the IE "BandNR", or the second capability parameter includes the IE "FeatureSetUplink", or the second capability parameter includes the IE "FeatureSetUplinkPerCC", or the second capability parameter includes the IE "Phy-Parameters".

[0422] As one example, the second capability parameter includes the IE "RF-Parameters".

[0423] Example 6

[0424] Example 6 illustrates a schematic diagram of a target RO set according to an embodiment of this application, as shown in Figure 6. In Figure 6, the target RO set depends on the relationship between a first RSRP and a first threshold.

[0425] In Embodiment 6, the first SSB in this application is associated with the target RO, the set of target ROs in this application depends on the relationship between the first RSRP and the first threshold, the first RSRP in this application is the RSRP for downlink path loss reference; the second information block in this application indicates the first threshold.

[0426] As an example, the target RO set is determined based on the relationship between the first RSRP (reference signal received power) and the first threshold, which ensures transmission performance and provides greater flexibility.

[0427] As an example, the first SSB index is a non-negative integer.

[0428] As an example, the first SSB index is the index of the synchronization broadcast block.

[0429] As an example, the first SSB index is an index of a synchronous broadcast block among multiple synchronous broadcast blocks.

[0430] As an example, the first SSB index is the index of SSBs transmitted within an SSB cycle.

[0431] As an example, the first SSB index is the index of the SSBs transmitted in an SSB burst set.

[0432] As an example, the first SSB index indicates the index of the synchronization broadcast block.

[0433] As an example, the first SSB index identifies an SSB.

[0434] As an example, the first SSB index is no greater than 7.

[0435] As an example, the first SSB index is no greater than 63.

[0436] As an example, the technical feature “the first SSB and the target RO are associated” includes: the target RO is associated with (or mapped to) the first SSB in the SSB-RO mapping cycle.

[0437] As an example, the technical feature “the first SSB and the target RO are associated” includes: the first PRACH sent on the target RO is associated with (or mapped to) the first SSB in the SSB-RO mapping cycle.

[0438] As an example, the technical feature “the first SSB and the target RO are associated” includes: the transmit beam used by the target RO corresponds to the receive beam of the first SSB.

[0439] As an example, the technical feature “the first SSB and the target RO are associated” includes: the transmit spatial filter used by the target RO corresponds to the receive spatial filter of the first SSB.

[0440] As an example, the first threshold is a numerical value.

[0441] As an example, the first threshold is a non-negative number.

[0442] As an example, the unit of the first threshold is dB.

[0443] As an example, the unit of the first threshold is dBm.

[0444] As an example, the unit of the first threshold is mW.

[0445] As an example, the unit of the first threshold is W.

[0446] As an example, the target RO set is UE-implementation related.

[0447] As one example, the target RO set is configured by base station signaling.

[0448] As an example, the technical feature "the target RO set depends on the relationship between the first RSRP and the first threshold" includes: whether the target RO set is the first RO set or the second RO set depends on the relationship between the first RSRP and the first threshold.

[0449] As an example, the technical feature "the target RO set depends on the relationship between the first RSRP and the first threshold" includes: whether the target RO set is the first RO set or the second RO set is related to the relationship between the first RSRP and the first threshold.

[0450] As an example, the technical feature "the target RO set depends on the relationship between the first RSRP and the first threshold" includes: the relationship between the first RSRP and the first threshold is used to determine whether the target RO set is the first RO set or the second RO set.

[0451] As an example, the technical feature "the target RO set depends on the relationship between the first RSRP and the first threshold" includes: when the first RSRP is greater than the first threshold, the target RO set is the first RO set.

[0452] As an example, the technical feature "the target RO set depends on the relationship between the first RSRP and the first threshold" includes: when the first RSRP is not greater than (or less than or equal to) the first threshold, the target RO set is the second RO set.

[0453] As an example, the technical feature "the target RO set depends on the relationship between the first RSRP and the first threshold" includes: the first RSRP being greater than the first threshold is a condition that the target RO set is the first RO set.

[0454] As an example, the technical feature "the target RO set depends on the relationship between the first RSRP and the first threshold" includes: the first RSRP being greater than the first threshold is one of a number of conditions for the target RO set to be the first RO set.

[0455] As an example, the technical feature "the target RO set depends on the relationship between the first RSRP and the first threshold" includes: the first RSRP being greater than the first threshold is a necessary condition for the target RO set to be the first RO set.

[0456] As an example, the technical feature "the target RO set depends on the relationship between the first RSRP and the first threshold" includes: the first RSRP not being greater than the first threshold is a condition for the target RO set to be the second RO set.

[0457] As an example, the technical feature "the target RO set depends on the relationship between the first RSRP and the first threshold" includes: the first RSRP not being greater than the first threshold is one of a number of conditions for the target RO set to be the second RO set.

[0458] As an example, the technical feature "the target RO set depends on the relationship between the first RSRP and the first threshold" includes: the first RSRP not being greater than the first threshold is a necessary condition for the target RO set to be the second RO set.

[0459] As an example, the downlink path loss reference is a reference signal.

[0460] As an example, the downlink path loss reference is a downlink reference signal used to determine path loss.

[0461] As an example, the downlink path loss reference is CSI-RS (Channel State Information-Reference Signal) or SSB.

[0462] As an example, the downlink path loss reference occupies CSI-RS resources.

[0463] As an example, the downlink path loss reference occupies NZP (non-zero-power) CSI-RS resources.

[0464] As an example, the downlink path loss reference is the first SSB.

[0465] As an example, the downlink path loss reference is an SSB other than the first SSB or a reference signal.

[0466] As an example, the technical feature "the first RSRP is an RSRP for downlink path loss reference" includes: the first RSRP depends on the RSRP (reference signal received power) for the downlink path loss reference.

[0467] As an example, the technical feature "the first RSRP is an RSRP for downlink path loss reference" includes: the RSRP for the downlink path loss reference is used to determine (or to calculate) the first RSRP.

[0468] As an example, the technical feature "the first RSRP is an RSRP for downlink path loss reference" includes: the first RSRP is related to the RSRP for the downlink path loss reference.

[0469] As an example, the technical feature "the first RSRP is an RSRP for downlink path loss reference" includes: the first RSRP is linearly correlated with the RSRP for the downlink path loss reference.

[0470] As an example, the technical feature "the first RSRP is an RSRP for downlink path loss reference" includes: the value of the first RSRP is equal to the value of the RSRP for the downlink path loss reference.

[0471] As an example, the technical feature "the first RSRP is an RSRP for downlink path loss reference" includes: the value of the first RSRP is equal to the RSRP value measured based on the downlink path loss reference.

[0472] As an example, the technical feature "the second information block indicates the first threshold" includes: the second information block explicitly or implicitly indicates the first threshold.

[0473] As one embodiment, the technical feature "the second information block indicates the first threshold" includes: part or all of the second information block is used to explicitly or implicitly indicate the first threshold.

[0474] As one embodiment, the technical feature "the second information block indicates the first threshold" includes: the second information block is used to determine the first threshold.

[0475] As one embodiment, the technical feature "the second information block indicates the first threshold" includes: the first threshold depends on the second information block.

[0476] As an example, the technical feature "the second information block indicates the first threshold" includes: the value of a field included in the second information block is equal to the first threshold.

[0477] Example 7

[0478] Example 7 illustrates a schematic diagram of multiple parameters according to an embodiment of this application, as shown in Figure 7. In Figure 7, the multiple parameters include a first parameter and a second parameter, the first parameter indicating the number of preambles for two-step random access for a first RO set, and the second parameter indicating the number of preambles for two-step random access for a second RO set.

[0479] In Embodiment 7, the multiple parameters in this application respectively indicate the number of preambles for two-step random access for different RO sets; the random access preambles included in the first PRACH in this application depend on one of the multiple parameters corresponding to the target RO set; the third information block indicates the multiple parameters.

[0480] As an example, multiple parameters are set to indicate the number of preambles for two-step random access for the first RO set and the second RO set, respectively, thereby effectively determining the random access preambles included in the first PRACH, improving the performance of random access and ensuring compatibility.

[0481] As an example, the plurality of parameters includes only two parameters.

[0482] As an example, the number of the plurality of parameters is greater than or equal to 2.

[0483] As an example, the value of any one of the plurality of parameters is an integer.

[0484] As an example, the value of any one of the plurality of parameters is greater than 0.

[0485] As an example, any two of the plurality of parameters are configured or indicated independently.

[0486] As an example, any two of the plurality of parameters may be configured or indicated by two separate Internet Explorers (IEs) or by two separate domains within the same IE.

[0487] As an example, any one of the plurality of parameters indicates the number of preambles for a 2-step random access for a set of ROs.

[0488] As an example, any one of the plurality of parameters indicates the number of preambles used for two-step random access in the mapping of ROs included in the SSB and the RO set.

[0489] As an example, the value of any one of the multiple parameters is not greater than the first parameter, which is the number of preambles corresponding to one SSB minus the number of preambles used for 4-step random access corresponding to one SSB in the SSB-RO mapping.

[0490] As an example, the technical feature "multiple parameters respectively indicate the number of preambles for 2-step random access for different RO sets" includes: the multiple parameters respectively indicate the number of contention-based preambles for 2-step random access for different RO sets.

[0491] As an example, the technical feature "multiple parameters respectively indicate the number of preambles for 2-step random access for different RO sets" includes: the values ​​of the multiple parameters respectively represent the number of preambles for 2-step random access for different RO sets.

[0492] As an example, the technical feature “multiple parameters respectively indicate the number of preambles for 2-step random access for different RO sets” includes: the values ​​of the multiple parameters are associated with the number of preambles for 2-step random access for different RO sets.

[0493] As an example, the technical feature "multiple parameters respectively indicate the number of preambles for 2-step random access for different RO sets" includes: the values ​​of the multiple parameters and the number of preambles for 2-step random access for different RO sets are in one-to-one correspondence.

[0494] As an example, the technical feature “multiple parameters respectively indicate the number of preambles for 2-step random access for different RO sets” includes: the relationship between the values ​​of the multiple parameters and the number of preambles for 2-step random access for different RO sets is predefined or configurable.

[0495] As an example, the technical feature "multiple parameters respectively indicate the number of preambles for two-step random access for different RO sets" includes: the multiple parameters respectively indicate the number of preambles for two-step random access for a first subset of ROs and a second subset of ROs; wherein, the number of the multiple parameters is 2, the first subset of ROs includes multiple ROs determined by the first mask index in the first subset of ROs, and the second subset of ROs includes multiple ROs determined by the second mask index in the second subset of ROs.

[0496] As an example, the technical feature "multiple parameters respectively indicate the number of preambles for 2-step random access for different RO sets" includes: the multiple parameters include a first parameter and a second parameter, the first parameter indicating the number of preambles for 2-step random access for a first subset of ROs, and the second parameter indicating the number of preambles for 2-step random access for a second subset of ROs; wherein, the first parameter and the second parameter are configured separately, the first subset of ROs includes multiple ROs determined by the first mask index in the first subset of ROs, and the second subset of ROs includes multiple ROs determined by the second mask index in the second subset of ROs.

[0497] As an example, the technical feature "multiple parameters respectively indicating the number of preambles for 2-step random access for different RO sets" includes: the multiple parameters include a first parameter and a second parameter, the first parameter indicating the number of preambles for 2-step random access corresponding to each SSB in the mapping of SSB and ROs included in the first RO subset, and the second parameter indicating the number of preambles for 2-step random access corresponding to each SSB in the mapping of SSB and ROs included in the second RO subset; wherein, the first parameter and the second parameter are configured separately, the first RO subset includes multiple ROs determined by the first mask index in the first RO set, and the second RO subset includes multiple ROs determined by the second mask index in the second RO set.

[0498] As an example, the random access preamble included in the first PRACH refers to the random access preamble code included in the first PRACH.

[0499] As an example, the random access preamble included in the first PRACH refers to the random access preamble index included in the first PRACH.

[0500] As an example, the random access preamble included in the first PRACH refers to the format of the random access preamble sequence included in the first PRACH.

[0501] As an example, the random access preamble included in the first PRACH refers to the sequence length of the random access preamble sequence included in the first PRACH.

[0502] As an example, the technical feature "the random access preamble included in the first PRACH depends on one of the plurality of parameters corresponding to the target RO set" includes: the parameter among the plurality of parameters corresponding to the target RO set is used to determine the random access preamble included in the first PRACH.

[0503] As an example, the technical feature "the random access preamble included in the first PRACH depends on one of the plurality of parameters corresponding to the target RO set" includes: the random access preamble included in the first PRACH is related to one of the plurality of parameters corresponding to the target RO set.

[0504] As an example, the technical feature "the random access preamble included in the first PRACH depends on one of the plurality of parameters corresponding to the target RO set" includes: the random access preamble included in the first PRACH belongs to a plurality of random access preambles indicated by one of the plurality of parameters corresponding to the target RO set.

[0505] As an example, the technical feature “the random access preamble included in the first PRACH depends on one of the plurality of parameters corresponding to the target RO set” includes: the random access preamble included in the first PRACH is one of the plurality of random access preambles indicated by the parameter corresponding to the target RO set and associated with the first SSB.

[0506] As an example, the technical feature “the random access preamble included in the first PRACH depends on a parameter among the plurality of parameters corresponding to the target RO set” includes: the random access preamble included in the first PRACH is one of N preambles for 2-step random access, wherein N depends on the value of a parameter among the plurality of parameters for the target RO set.

[0507] As an example, the technical feature "the third information block indicates the plurality of parameters" includes: part or all of the third information block is used to explicitly or implicitly indicate the plurality of parameters.

[0508] As an example, the technical feature "the third information block indicates the plurality of parameters" includes: the plurality of parameters depend on the third information block.

[0509] As an example, the technical feature "the third information block indicates the plurality of parameters" includes: the third information block is used to determine the plurality of parameters.

[0510] As an example, the technical feature "the third information block indicates the plurality of parameters" includes: the plurality of fields included in the third information block respectively indicate the plurality of parameters.

[0511] As an example, the technical feature "the third information block indicates the plurality of parameters" includes: the two fields included in the third information block respectively indicate the plurality of parameters, and the number of the plurality of parameters is 2.

[0512] As an example, the technical feature "the third information block indicates the plurality of parameters" includes: the two fields included in the third information block respectively indicate the first parameter and the second parameter, and the plurality of parameters include only the first parameter and the second parameter.

[0513] As an example, the technical feature "the third information block indicates the plurality of parameters" includes: the plurality of parameters include only the first parameter and the second parameter, the field "msgA-CB-PreamblesPerSSB-PerSharedRO" included in the third information block indicates the first parameter, and the field "msgA-CB-PreamblesPerSSB-PerSharedRO-SBFD" included in the third information block indicates the second parameter.

[0514] As an example, the technical feature "the third information block indicates the plurality of parameters" includes: the plurality of parameters include only the first parameter and the second parameter, the field "msgA-CB-PreamblesPerSSB-PerSharedRO-SBFD" included in the third information block indicates the first parameter, and the field "msgA-CB-PreamblesPerSSB-PerSharedRO" included in the third information block indicates the second parameter.

[0515] Example 8

[0516] Example 8 illustrates a schematic diagram of the target received power according to an embodiment of this application, as shown in Figure 8. In Figure 8, the target received power depends on the initial target received power corresponding to the target RO set.

[0517] In Embodiment 8, the transmit power of the first PRACH in this application depends on the target receive power of the first PRACH, the target receive power in this application depends on the initial target receive power corresponding to the target RO set, and the second information block in this application indicates the initial target receive power.

[0518] As an example, the target received power depends on the initial target received power corresponding to the target RO set, which is compatible with existing standards and supports random access in different scenarios, and can achieve better uplink coverage and lower transmission latency.

[0519] As an example, the transmit power of the first PRACH is a real number.

[0520] As an example, the transmit power of the first PRACH is measured in dBm.

[0521] As an example, the unit of the transmit power of the first PRACH is mW (milliwatt).

[0522] As an example, the unit of the transmit power of the first PRACH is W (Watt).

[0523] As an example, the transmit power of the first PRACH is the transmit power of the first PRACH on the active uplink BWP in the carrier of the serving cell.

[0524] As an example, the target received power of the first PRACH is a real number.

[0525] As an example, the target received power of the first PRACH is measured in dBm.

[0526] As an example, the target received power of the first PRACH is measured in mW (milliWatt).

[0527] As an example, the target received power of the first PRACH is measured in W (Watt).

[0528] As an example, the target received power of the first PRACH is the expected received power of the first PRACH.

[0529] As an example, the target receive power of the first PRACH is the expected receive power of the first PRACH configured according to the target SINR value.

[0530] As an example, the target received power of the first PRACH is the power desired by the receiver of the first PRACH.

[0531] As an example, the target received power of the first PRACH is the value of the variable "PREAMBLE_RECEIVED_TARGET_POWER" in the two-step random access process to which the first PRACH belongs.

[0532] As an example, the feature "the transmit power of the first PRACH depends on the target receive power of the first PRACH" includes the following meaning: the target receive power of the first PRACH is used to determine (or to calculate) the transmit power of the first PRACH.

[0533] As an example, the feature "the transmit power of the first PRACH depends on the target receive power of the first PRACH" includes the following meaning: the transmit power of the first PRACH is related to the target receive power of the first PRACH.

[0534] As an example, the feature "the transmit power of the first PRACH depends on the target receive power of the first PRACH" includes the following meaning: the transmit power of the first PRACH depends on the target receive power of the first PRACH and the path loss of the downlink path loss reference.

[0535] As a supplementary embodiment of this example, the path loss referenced for the downlink path loss corresponds to the PL in the 3GPP protocol. b,f,c .

[0536] As a supplementary embodiment of this example, the path loss of the downlink path loss reference is the path loss determined by the measurement of the downlink path loss reference.

[0537] As an auxiliary embodiment of this example, the path loss of the downlink path loss reference is the transmit power of the downlink path loss reference and the path loss determined by the RSRP (reference signal received power) for the downlink path loss reference.

[0538] As a supplementary embodiment of this example, the path loss of the downlink path loss reference is equal to the difference between the transmit power of the downlink path loss reference and the RSRP for the downlink path loss reference.

[0539] As an example, the feature "the transmit power of the first PRACH depends on the target receive power of the first PRACH" includes the following meaning: the transmit power of the first PRACH is equal to the minimum value between the maximum output power and the target receive power of the first PRACH and the path loss of the downlink path loss reference.

[0540] As an example, the feature "the transmit power of the first PRACH depends on the target receive power of the first PRACH" includes the following meaning: within a range not exceeding the configured maximum output power, the transmit power of the first PRACH and the target receive power of the first PRACH are linearly related.

[0541] As an additional embodiment of this example, the maximum output power is the maximum transmit power value of the first PRACH configured in the terminal.

[0542] As an additional embodiment of this example, the maximum output power is the maximum output power of the terminal configured for a serving cell of a carrier.

[0543] As a supplementary embodiment of this example, the maximum output power is related to the capability of the terminal.

[0544] As a supplementary embodiment of this example, the maximum output power is related to the category of the terminal.

[0545] As a supplementary embodiment of this example, the maximum output power corresponds to P in the 3GPP protocol. CMAX,f,c (i).

[0546] As an example, the unit of the initial target received power is dBm.

[0547] As an example, the unit of the initial target received power is mW (milliWatt).

[0548] As an example, the unit of the initial target received power is W (Watt).

[0549] As an example, the initial target received power is predefined or configurable.

[0550] As an example, the technical feature "the target received power depends on the initial target received power corresponding to the target RO set" includes: the target received power is related to the initial target received power corresponding to the target RO set.

[0551] As an example, the technical feature "the target received power depends on the initial target received power corresponding to the target RO set" includes: the initial target received power corresponding to the target RO set is used to determine the target received power.

[0552] As an example, the technical feature "the target received power depends on the initial target received power corresponding to the target RO set" includes: the target received power = msgA - preambleReceivedTargetPower + DELTA_PREAMBLE + (PREAMBLE_POWER_RAMPING_COUNTER – 1) × PREAMBLE_POWER_RAMPING_STEP; where the value of msgA - preambleReceivedTargetPower is equal to the initial target received power corresponding to the target RO set, DELTA_PREAMBLE represents a power offset related to the random access preamble format, PREAMBLE_POWER_RAMPING_COUNTER represents the power boost counter of the random access preamble, and PREAMBLE_POWER_RAMPING_STEP represents the power boost value.

[0553] As an example, the technical feature "the target received power depends on the initial target received power corresponding to the target RO set" includes: the target received power of the first PRACH depends on the initial target received power corresponding to the target RO set and the initial power boost value corresponding to the target RO set, and the second information block indicates the initial power boost value corresponding to the target RO set.

[0554] As an example, the technical feature "the target received power depends on the initial target received power corresponding to the target RO set" includes: the target received power of the first PRACH = msgA - preambleReceivedTargetPower + DELTA_PREAMBLE + (PREAMBLE_POWER_RAMPING_COUNTER – 1) × PREAMBLE_POWER_RAMPING_STEP; where the value of msgA - preambleReceivedTargetPower is equal to the initial target received power corresponding to the target RO set, DELTA_PREAMBLE represents a power offset related to the random access preamble format, PREAMBLE_POWER_RAMPING_COUNTER represents the power boost counter of the random access preamble, PREAMBLE_POWER_RAMPING_STEP represents the initial power boost value corresponding to the target RO set, and the second information block indicates the initial power boost value corresponding to the target RO set.

[0555] As an adjunct to this embodiment, the field “powerRampingStep” included in the second information block indicates the initial power boost value.

[0556] As an adjunct to this embodiment, the field “powerRampingStep-SBFD” included in the second information block indicates the initial power boost value.

[0557] As an example, the technical feature "the second information block indicates the initial target received power" includes: the second information block explicitly or implicitly indicates the initial target received power.

[0558] As an example, the technical feature "the second information block indicates the initial target received power" includes: part or all of the second information block is used to explicitly or implicitly indicate the initial target received power.

[0559] As one embodiment, the technical feature "the second information block indicates the initial target received power" includes: the second information block is used to determine the initial target received power.

[0560] As an example, the technical feature "the second information block indicates the initial target received power" includes: the second information block indicates the initial target received power, which is related to the target RO set.

[0561] As an example, the technical feature "the second information block indicates the initial target received power" includes: the second information block indicates the initial target received power corresponding to the target RO set.

[0562] As an example, the technical feature "the second information block indicates the initial target received power" includes: a field corresponding to the target RO set in the second information block indicates the initial target received power.

[0563] As an example, the technical feature "the second information block indicates the initial target received power" includes: the field "preambleReceivedTargetPower" corresponding to the target RO set in the second information block indicates the initial target received power.

[0564] As an example, the technical feature "the second information block indicates the initial target received power" includes: the field "preambleReceivedTargetPower-SBFD" corresponding to the target RO set in the second information block indicates the initial target received power.

[0565] Example 9

[0566] Example 9 illustrates a schematic diagram of a target PO according to an embodiment of this application, as shown in Figure 9. In Figure 9, the vertically filled rectangular areas represent the first PRACH, each unfilled rectangular area represents a PO in the target PO set, where the numbers #1, #2, and #N represent the index values ​​of the PO, and the thick-lined unfilled rectangular areas represent target POs.

[0567] In Embodiment 9, this application sends a first PUSCH in the target PO; wherein, the first PUSCH in this application belongs to a 2-step random access procedure, the target PO in this application is a PO associated with the first PRACH in the target PO set, and the third information block in this application indicates the target PO set corresponding to the target PO set.

[0568] As an example, setting the target PO to be a PO associated with the first PRACH in the target PO set, and the target PO set corresponding to the target RO set, increases the probability of successful transmission of MsgA PRACH and MsgA PUSCH, increases flexibility, and improves system performance.

[0569] As an example, the first PUSCH is transmitted via an air interface or a wireless interface.

[0570] As an example, the first PUSCH is a baseband signal or a radio frequency signal.

[0571] As an example, the first PUSCH is MsgA(Message A)PUSCH.

[0572] As an example, the first PUSCH is a PUSCH (physical uplink shared channel) or is used to transmit PUSCH.

[0573] As an example, the first PUSCH includes a Transport Block (TB).

[0574] As an example, the first PUSCH is used for initial random access.

[0575] As an example, the technical feature "sending the first PUSCH in the target PO" includes: the target PO being used to send (or being used to transmit) the first PUSCH.

[0576] As an example, the technical feature "sending the first PUSCH in the target PO" includes: the target PO carrying information about the first PUSCH.

[0577] As an example, the technical feature "sending a first PUSCH in the target PO" includes: the first PUSCH maps (or occupies) the time-domain resources of the target PO.

[0578] As an example, the technical feature "sending a first PUSCH in the target PO" includes: the first PUSCH overlaps with the time domain resources occupied by the target PO in the time domain.

[0579] As an example, the first PRACH and the first PUSCH form an MSGA.

[0580] As an example, the first PRACH and the first PUSCH are MSGA PRACH and MSGA PUSCH, respectively.

[0581] As an example, the target PO set includes multiple POs.

[0582] As an example, each PO in the target PO set is a PUSCH opportunity.

[0583] As an example, each PO in the target PO set includes time-frequency resources for allocated or configured PUSCH.

[0584] As an example, each PO in the target PO set includes the time-frequency resources occupied by one PUSCH transmission.

[0585] As an example, the target PO set contains two time-division multiplexed POs.

[0586] As an example, the target PO set contains two frequency division multiplexed POs.

[0587] As an example, each PO in the target PO set occupies only SBFD symbols in the time domain.

[0588] As an example, each PO in the target PO set occupies only non-SBFD symbols in the time domain.

[0589] As an example, the technical feature "the target PO is a PO associated with the first PRACH in the target PO set" includes: the target PO is a PO in the target PO set.

[0590] As an example, the technical feature "the target PO is a PO associated with the first PRACH in the target PO set" includes: the target PO belongs to the target PO set.

[0591] As an example, the technical feature "the target PO is a PO in the target PO set that is associated with the first PRACH" includes: the target PO is a PO in the target PO set that is associated with the first PRACH.

[0592] As an example, the technical feature "the target PO is a PO associated with the first PRACH in the target PO set" includes: the target PO is a PO mapped by the first PRACH in the target PO set.

[0593] As an example, the technical feature "the target PO is a PO in the target PO set that is associated with the first PRACH" includes: the target PO set and the target PO set satisfy a predefined mapping rule, wherein the first PRACH is associated with and mapped to the target PO.

[0594] As an example, the technical feature "the target PO is a PO associated with the first PRACH in the target PO set" includes: the mapping ratio between the target PO set and the target PO set is configured by the base station, wherein the first PRACH is mapped to the target PO.

[0595] As an example, the target PO set corresponding to the target RO set is the target PO set that has a mapping relationship with the target RO set.

[0596] As an example, the target PO set corresponding to the target RO set is the target PO set associated with the target RO set.

[0597] As an example, the target PO set corresponding to the target RO set is the target PO set configured by the base station and mapped to the target RO set.

[0598] As an example, when the target RO set is the first RO set, the target PO set corresponding to the target RO set is the target PO set corresponding to the first RO set; or when the target RO set is the second RO set, the target PO set corresponding to the target RO set is the target PO set corresponding to the second RO set.

[0599] As an example, when the target RO set is the first RO set, the target PO set corresponding to the target RO set includes at least one PO that occupies a full-duplex symbol in the time domain; or when the target RO set is the second RO set, the target PO set corresponding to the target RO set includes at least one PO that occupies a non-full-duplex symbol in the time domain.

[0600] As an example, the non-full-duplex symbol is a non-SBFD symbol.

[0601] As an example, the "non-full-duplex symbol" and the "non-SBFD symbol" are equivalent or interchangeable.

[0602] As an example, the non-full-duplex symbol is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

[0603] As an example, the non-full-duplex symbol is a time-domain symbol that is not configured with SBFD.

[0604] As an example, the non-full-duplex symbol is a symbol that does not overlap with the SBFD time slot in the time domain.

[0605] As an example, the non-full-duplex symbol is a symbol that does not overlap with the full-duplex symbol.

[0606] As an example, the non-full-duplex symbol is a time-domain symbol that does not support full-duplex.

[0607] As an example, the non-full-duplex symbol is a time-domain symbol that can only be used for uplink transmission, downlink transmission, or guard interval.

[0608] As an example, the non-full-duplex symbol is a time-domain symbol that is not indicated (or provided) by signaling configured with SBFD.

[0609] As an example, the non-full-duplex symbol is a time-domain symbol that is not indicated (or provided) by the first information block.

[0610] As an example, the non-full-duplex symbol is a symbol that is indicated by TDD uplink / downlink configuration as downlink or flexible and cannot be used for uplink transmission.

[0611] As an example, the non-full-duplex symbol is a symbol that is indicated as downlink by the TDD uplink / downlink configuration and cannot be used for uplink transmission.

[0612] As an example, the non-full-duplex symbol is a symbol indicated as uplink by the TDD uplink / downlink configuration.

[0613] As an example, the non-full-duplex symbol is a symbol other than the full-duplex symbol.

[0614] As an example, the non-full-duplex symbol is a time-domain symbol that is not configured with the target sub-band.

[0615] As an example, the technical feature "the third information block indicates the target PO set corresponding to the target RO set" includes: part or all of the third information block is used to explicitly or implicitly indicate the target PO set corresponding to the target RO set.

[0616] As an example, the technical feature "the third information block indicates the target PO set corresponding to the target RO set" includes: the target PO set corresponding to the target RO set depends on the third information block.

[0617] As one embodiment, the technical feature "the third information block indicates the target PO set corresponding to the target RO set" includes: the third information block is used to determine the target PO set corresponding to the target RO set.

[0618] As an example, the technical feature "the third information block indicates the target PO set corresponding to the target RO set" includes: the time-domain resources and frequency-domain resources included in at least one PO in the target PO set corresponding to the target RO set indicated by the third information block.

[0619] As an example, the technical feature "the third information block indicates the target PO set corresponding to the target RO set" includes: the third information block indicates the number of time-division multiplexed POs and the number of frequency-division multiplexed POs in the target PO set corresponding to the target RO set.

[0620] As an example, the technical feature "the third information block indicates the target PO set corresponding to the target RO set" includes: the third information block indicates the starting time domain resources of the earliest PO in the time domain and the starting frequency domain resources of the lowest PO in the frequency domain in the target PO set corresponding to the target RO set.

[0621] As an example, the technical feature "the third information block indicates the target PO set corresponding to the target RO set" includes: the third information block indicates a first PO set and a second PO set, and the target PO set is a PO set that corresponds to the target RO set in the first PO set and the second PO set; wherein, the first PO set includes at least one PO that occupies a full-duplex symbol in the time domain, and the second PO set includes at least one PO that occupies a non-full-duplex symbol in the time domain.

[0622] Example 10

[0623] Example 10 illustrates a schematic diagram of a first capability parameter and a second capability parameter according to an embodiment of this application, as shown in Figure 10. In Figure 10, the horizontal axis represents time, the rectangular area filled with crosshairs represents a full-duplex symbol, and the first capability parameter and the second capability parameter respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol.

[0624] In Embodiment 10, the first capability parameter and the second capability parameter in this application respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol.

[0625] As an example, the sender of the first PRACH is determined to support a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol based on the first capability parameter and the second capability parameter, respectively, which reduces the complexity of the user equipment and reduces the uplink transmission latency.

[0626] As an example, the sender of the first capability parameter is the terminal described in this application.

[0627] As an example, the sender of the first capability parameter is equivalent to or can be used interchangeably with the terminal described in this application.

[0628] As an example, the sender of the second capability parameter is the terminal described in this application.

[0629] As an example, the sender of the second capability parameter is equivalent to or can be used interchangeably with the terminal described in this application.

[0630] As an example, the technical feature “the first capability parameter and the second capability parameter respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol” includes: the first capability parameter indicates that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol; the second capability parameter indicates that the sender of the first PRACH supports a 2-step random access procedure on a full-duplex symbol.

[0631] As an example, the technical feature “the first capability parameter and the second capability parameter respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol” includes: the sender of the first PRACH is an SBFD device, and the SBFD-enabled device can perform a 4-step random access procedure and a 2-step random access procedure on a full-duplex symbol.

[0632] As an example, the technical feature “the first capability parameter and the second capability parameter respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol” includes: the first capability parameter indicates whether the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol; the second capability parameter indicates whether the sender of the first PRACH supports a 2-step random access procedure on a full-duplex symbol.

[0633] As an example, the technical feature "the first capability parameter and the second capability parameter respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol" includes: all or part of the first capability parameter is used to explicitly or implicitly indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol; all or part of the second capability parameter is used to explicitly or implicitly indicate that the sender of the first PRACH supports a 2-step random access procedure on a full-duplex symbol.

[0634] As an example, the technical feature "the first capability parameter and the second capability parameter respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol" includes: the first capability parameter is equal to a given value and is used to indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol; the second capability parameter is equal to a given value and is used to indicate that the sender of the first PRACH supports a 2-step random access procedure on a full-duplex symbol.

[0635] As an example, the technical feature “the first capability parameter and the second capability parameter respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol” includes: the first capability parameter indicates that the sender of the first PRACH has the capability to perform a 4-step random access procedure on a full-duplex symbol; the second capability parameter indicates that the sender of the first PRACH has the capability to perform a 2-step random access procedure on a full-duplex symbol.

[0636] Example 11

[0637] Example 11 illustrates a schematic diagram of the mapping between a first RO set and a second RO set and a synchronization broadcast signal according to an embodiment of this application, as shown in Figure 11. In Figure 11, each rectangle represents a transmission of a synchronization broadcast signal, where the numbers #0, #1, and #2 represent the index values ​​of the synchronization broadcast signal, the upper dashed ellipse represents the ROs in the first RO set, and the lower dashed ellipse represents the ROs in the second RO set.

[0638] In Embodiment 11, the ROs in the first RO set and the ROs in the second RO set of this application are each mapped to a synchronous broadcast signal.

[0639] As an example, the ROs in the first RO set and the ROs in the second RO set are mapped separately from the synchronous broadcast signal. This improves PRACH capacity while avoiding adverse effects on other users and ensuring backward compatibility.

[0640] As an example, the synchronous broadcast signal is a synchronization signal.

[0641] As an example, the synchronization broadcast signal is the physical broadcast channel (PBCH).

[0642] As an example, the synchronization broadcast signal includes a synchronization signal and a physical broadcast channel.

[0643] As an example, the synchronization broadcast signal is the synchronization signal physical broadcast channel block (SS / PBCH block).

[0644] As an example, the synchronization broadcast signal is a synchronization signal block (SSB).

[0645] As an example, the synchronization broadcast signal is a 6G synchronization signal or a 6G physical broadcast channel.

[0646] As an example, the technical feature "the ROs in the first RO set and the ROs in the second RO set are each mapped to the synchronous broadcast signal" includes: the ROs in the first RO set and the ROs in the second RO set are independently mapped to the synchronous broadcast signal.

[0647] As an example, the technical feature "the ROs in the first RO set and the ROs in the second RO set are each mapped to the synchronous broadcast signal" includes: the ROs in the first RO set located on full-duplex symbols in the time domain and the ROs in the second RO set located on non-full-duplex symbols in the time domain are each mapped to the synchronous broadcast signal.

[0648] As an example, the technical feature “the ROs in the first RO set and the ROs in the second RO set are each mapped to the synchronous broadcast signal” includes: the ROs in the first RO set located in the time domain on full-duplex symbols indicated as downlink by the TDD uplink / downlink configuration and the ROs in the second RO set located in the time domain on symbols indicated as uplink or flexible by the TDD uplink / downlink configuration are each mapped to the synchronous broadcast signal.

[0649] As one embodiment, the technical feature "the ROs in the first RO set and the ROs in the second RO set are each mapped to the synchronous broadcast signal" includes: the ROs in the first RO set and the ROs in the second RO set are each mapped to the synchronous broadcast signal within a time window. As a supplementary embodiment of the above embodiment, the advantage of doing so is that it uses the existing association period design, reducing the standard workload.

[0650] As one embodiment, the technical feature "ROs in the first RO set and ROs in the second RO set are each mapped to a synchronous broadcast signal" includes: ROs in the first RO set located on full-duplex symbols indicated as downlink by TDD uplink / downlink configuration in the time domain, and ROs in the second RO set located on symbols indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain, are each mapped to a synchronous broadcast signal within a time window. As a supplementary embodiment of the above embodiment, the advantage of doing so is that it utilizes the existing association period design, reducing standard workload.

[0651] As one embodiment, the technical feature "ROs in the first RO set and ROs in the second RO set are each mapped to a synchronization broadcast signal" includes: ROs in the first RO set located on full-duplex symbols in the time domain and ROs in the second RO set located on non-full-duplex symbols in the time domain are mapped to a synchronization broadcast signal respectively within their respective time windows. As a supplementary embodiment of the above embodiment, the advantage of doing so is that independent association periods are used for ROs in downlink full-duplex symbols, improving flexibility and optimizing PRACH capacity performance.

[0652] As one embodiment, the technical feature "ROs in the first RO set and ROs in the second RO set are each mapped to a synchronous broadcast signal" includes: ROs in the first RO set located on full-duplex symbols indicated as downlink by TDD uplink / downlink configuration in the time domain, and ROs in the second RO set located on symbols indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain, are respectively mapped to a synchronous broadcast signal within their respective time windows. As a supplementary embodiment of the above embodiment, the advantage of doing so is that it employs independent association periods, improving flexibility and optimizing PRACH capacity performance.

[0653] As an example, the technical feature "the ROs in the first RO set and the ROs in the second RO set are each mapped to the synchronous broadcast signal" includes: the mapping between the ROs in the first RO set and the synchronous broadcast signal and the mapping between the ROs in the second RO set and the synchronous broadcast signal do not affect each other.

[0654] As an example, the technical feature "mapping the ROs in the first RO set and the ROs in the second RO set with the synchronous broadcast signal" includes: mapping the ROs in the first RO set and the ROs in the second RO set with the index of the synchronous broadcast signal.

[0655] As an example, the technical feature "the ROs in the first RO set and the ROs in the second RO set are each mapped to the synchronous broadcast signal" includes: the ROs in the first RO set and the ROs in the second RO set are each mapped to the index of the synchronous broadcast signal according to the same sorting rule.

[0656] As an example, the technical feature "the ROs in the first RO set and the ROs in the second RO set are each mapped to the synchronous broadcast signal" includes: the ROs in the first RO set and the ROs in the second RO set are each independently sorted, and then each is mapped to the synchronous broadcast signal.

[0657] As an example, the technical feature "the ROs in the first RO set and the ROs in the second RO set are each mapped to the synchronous broadcast signal" includes: the ROs in the first RO set are associated with the synchronous broadcast signal in a given order, and the ROs in the second RO set are also associated with the synchronous broadcast signal in a given order.

[0658] As an example, the technical feature "mapping the ROs in the first RO set and the ROs in the second RO set with the synchronous broadcast signal" includes: the synchronous broadcast block index and the ROs in the first RO set are mapped sequentially according to the following mapping order: first, the preamble index in a RO; then, the frequency resource index of the frequency-division RO; then, the time domain resource index of the time-division RO in a PRACH time slot; and finally, the index of the PRACH time slot. The synchronous broadcast block index and the ROs in the second RO set are mapped sequentially according to the following mapping order: first, the preamble index in a RO; then, the frequency resource index of the frequency-division RO; then, the time domain resource index of the time-division RO in a PRACH time slot; and finally, the index of the PRACH time slot.

[0659] As an example, the technical feature "mapping the ROs in the first RO set and the ROs in the second RO set with the synchronous broadcast signal" includes: the synchronous broadcast block is mapped sequentially according to the index of 0, 1... and the ROs in the first RO set according to the mapping order of first the preamble index in a RO, then the frequency resource index of the frequency-division RO, then the time domain resource index of the time-division RO in a PRACH time slot, and finally the index of the PRACH time slot; the synchronous broadcast block index is mapped sequentially according to the index of 0, 1... and the ROs in the second RO set according to the mapping order of first the preamble index in a RO, then the frequency resource index of the frequency-division RO, then the time domain resource index of the time-division RO in a PRACH time slot, and finally the index of the PRACH time slot.

[0660] Example 12

[0661] Example 12 illustrates a structural block diagram of a processing device for a terminal according to an embodiment of this application, as shown in Figure 12. In Figure 12, the processing device 1200 in the terminal includes a first receiver 1201 and a first transmitter 1202. The first receiver 1201 includes a transmitter / receiver 456 (including an antenna 460) as shown in Figure 4 of this application, a receiving processor 452, and a controller / processor 490; the first transmitter 1202 includes a transmitter / receiver 456 (including an antenna 460) as shown in Figure 4 of this application, a transmitting processor 455, and a controller / processor 490.

[0662] In embodiment 12, a first receiver 1201 receives a first information block and a second information block. The first information block indicates at least one full-duplex symbol, and the second information block indicates a first RO set and a second RO set. The first RO set includes at least one RO for 4-step random access, and the second RO set includes at least one RO for 4-step random access. The first receiver 1201 receives a third information block, and a first transmitter 1202 transmits a first PRACH in the target RO. The first PRACH belongs to a 2-step random access procedure.

[0663] Wherein, the target RO belongs to a target RO set, which is one of the first RO set or the second RO set; the third information block indicates a first mask index and a second mask index, the target RO depends on the target mask index, and the target mask index is equal to the mask index corresponding to the target RO set, whichever is one of the first mask index or the second mask index; the first RO set includes at least one RO that occupies a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain, and the second RO set includes at least one RO that occupies a symbol indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain.

[0664] As an example, the first receiver 1201 receives a first SSB, which is associated with the target RO. The set of target ROs depends on the relationship between a first RSRP and a first threshold, where the first RSRP is an RSRP for downlink path loss reference. The second information block indicates the first threshold.

[0665] As an example, multiple parameters indicate the number of preambles for two-step random access for different RO sets; the random access preambles included in the first PRACH depend on one of the multiple parameters corresponding to the target RO set; the third information block indicates the multiple parameters.

[0666] As an example, the transmit power of the first PRACH depends on the target receive power of the first PRACH, the target receive power depends on the initial target receive power corresponding to the target RO set, and the second information block indicates the initial target receive power.

[0667] As an example, the first transmitter 1202 transmits a first PUSCH in the target PO;

[0668] Wherein, the first PUSCH belongs to a 2-step random access procedure, the target PO is a PO associated with the first PRACH in the target PO set, and the third information block indicates the target PO set corresponding to the target RO set.

[0669] As one embodiment, the first transmitter 1202 transmits a first capability parameter and a second capability parameter;

[0670] The first capability parameter and the second capability parameter respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol.

[0671] As an example, the ROs in the first RO set and the ROs in the second RO set are each mapped to a synchronous broadcast signal.

[0672] Example 13

[0673] Example 13 illustrates a structural block diagram of a processing apparatus in a base station according to an embodiment of this application, as shown in Figure 13. In Figure 13, the processing apparatus 1300 in the base station includes a second transmitter 1301 and a second receiver 1302. The second transmitter 1301 includes a transmitter / receiver 416 (including an antenna 460) as shown in Figure 4 of this application, a transmit processor 415, and a controller / processor 440; the second receiver 1302 includes a transmitter / receiver 416 (including an antenna 460) as shown in Figure 4 of this application, a receive processor 412, and a controller / processor 440.

[0674] In embodiment 13, the second transmitter 1301 transmits a first information block and a second information block. The first information block indicates at least one full-duplex symbol, and the second information block indicates a first RO set and a second RO set. The first RO set includes at least one RO for 4-step random access, and the second RO set includes at least one RO for 4-step random access. The second transmitter 1301 transmits a third information block, and the second receiver 1302 receives a first PRACH in the target RO. The first PRACH belongs to a 2-step random access procedure.

[0675] Wherein, the target RO belongs to a target RO set, which is one of the first RO set or the second RO set; the third information block indicates a first mask index and a second mask index, the target RO depends on the target mask index, and the target mask index is equal to the mask index corresponding to the target RO set, whichever is one of the first mask index or the second mask index; the first RO set includes at least one RO that occupies a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain, and the second RO set includes at least one RO that occupies a symbol indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain.

[0676] As an example, the second transmitter 1301 transmits a first SSB associated with the target RO, the set of target ROs depending on the relationship between a first RSRP and a first threshold, the first RSRP being an RSRP for downlink path loss reference; the second information block indicates the first threshold.

[0677] As an example, multiple parameters indicate the number of preambles for two-step random access for different RO sets; the random access preambles included in the first PRACH depend on one of the multiple parameters corresponding to the target RO set; the third information block indicates the multiple parameters.

[0678] As an example, the transmit power of the first PRACH depends on the target receive power of the first PRACH, the target receive power depends on the initial target receive power corresponding to the target RO set, and the second information block indicates the initial target receive power.

[0679] As one embodiment, the second receiver 1302 receives the first PUSCH in the target PO;

[0680] Wherein, the first PUSCH belongs to a 2-step random access procedure, the target PO is a PO associated with the first PRACH in the target PO set, and the third information block indicates the target PO set corresponding to the target RO set.

[0681] As one embodiment, the second receiver 1302 receives the first capability parameter and the second capability parameter;

[0682] The first capability parameter and the second capability parameter respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol.

[0683] As an example, the ROs in the first RO set and the ROs in the second RO set are each mapped to a synchronous broadcast signal.

[0684] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The terminal or base station or UE in this application includes, but is not limited to, mobile phones, tablets, laptops, network cards, low-power devices, eMTC devices, NB-IoT devices, vehicle communication devices, aircraft, airplanes, drones, remote-controlled airplanes, testing devices, testing equipment, testing instruments, etc. The base station equipment or base station or network-side equipment in this application includes, but is not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, eNBs, gNBs, Transmitter Receiver Nodes (TRPs), relay satellites, satellite base stations, airborne base stations, testing devices, testing equipment, testing instruments, etc.

[0685] Those skilled in the art will understand that the present invention can be practiced in other specified forms without departing from its core or essential characteristics. Therefore, the embodiments disclosed herein should in any way be considered descriptive rather than restrictive. The scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications within their equivalent meaning and scope are considered to be included therein.

Claims

1. A method for use in a terminal, characterized in that, include: Receive a first information block and a second information block, the first information block indicating at least one full-duplex symbol, the second information block indicating a first RO set and a second RO set, the first RO set including at least one RO for 4-step random access, and the second RO set including at least one RO for 4-step random access. Receive the third information block and send the first PRACH to the target RO. The first PRACH belongs to a 2-step random access procedure. Wherein, the target RO belongs to a target RO set, which is one of the first RO set or the second RO set; the third information block indicates a first mask index and a second mask index, the target RO depends on the target mask index, and the target mask index is equal to the mask index corresponding to the target RO set, whichever is between the first mask index and the second mask index; the first RO set includes at least one RO that occupies a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain, and the second RO set includes at least one RO that occupies a symbol indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain.

2. The method according to claim 1, characterized in that, Receive a first SSB, which is associated with the target RO, the set of target ROs depending on the relationship between a first RSRP and a first threshold, the first RSRP being an RSRP for downlink path loss reference; the second information block indicates the first threshold.

3. The method according to claim 1 or 2, characterized in that, Multiple parameters indicate the number of preambles for two-step random access for different RO sets; the random access preambles included in the first PRACH depend on one of the multiple parameters corresponding to the target RO set; the third information block indicates the multiple parameters.

4. The method according to any one of claims 1-3, characterized in that, The transmit power of the first PRACH depends on the target receive power of the first PRACH, the target receive power depends on the initial target receive power corresponding to the target RO set, and the second information block indicates the initial target receive power.

5. The method according to any one of claims 1-4, characterized in that, Send the first PUSCH to the target PO; Wherein, the first PUSCH belongs to a 2-step random access procedure, the target PO is a PO associated with the first PRACH in the target PO set, and the third information block indicates the target PO set corresponding to the target RO set.

6. The method according to any one of claims 1-5, characterized in that, Send the first capability parameter and the second capability parameter; The first capability parameter and the second capability parameter respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol.

7. The method according to any one of claims 1-6, characterized in that, The ROs in the first RO set and the ROs in the second RO set are each mapped to the synchronous broadcast signal.

8. A terminal, characterized in that, The terminal includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code including computer instructions, and the one or more processors call the computer instructions to cause the terminal to perform the method as described in any one of claims 1-7.

9. A method for use in a base station, characterized in that, include: Send a first information block and a second information block, the first information block indicating at least one full-duplex symbol, the second information block indicating a first RO set and a second RO set, the first RO set including at least one RO for 4-step random access, the second RO set including at least one RO for 4-step random access; A third information block is sent and a first PRACH is received in the target RO, the first PRACH belonging to a 2-step random access procedure; wherein, the target RO belongs to a target RO set, the target RO set being one of the first RO set or the second RO set; the third information block indicates a first mask index and a second mask index, the target RO depending on the target mask index, the target mask index being equal to the mask index corresponding to the target RO set, whichever of the first mask index or the second mask index is correct; the first RO set includes at least one RO occupying a full-duplex symbol indicated as downlink by TDD uplink / downlink configuration in the time domain, and the second RO set includes at least one RO occupying a symbol indicated as uplink or flexible by TDD uplink / downlink configuration in the time domain.

10. The method according to claim 9, characterized in that, Send a first SSB, which is associated with the target RO, the set of target ROs depending on the relationship between a first RSRP and a first threshold, the first RSRP being an RSRP for downlink path loss reference; the second information block indicates the first threshold.

11. The method according to claim 9 or 10, characterized in that, Multiple parameters indicate the number of preambles for two-step random access for different RO sets; the random access preambles included in the first PRACH depend on one of the multiple parameters corresponding to the target RO set; the third information block indicates the multiple parameters.

12. The method according to any one of claims 9-11, characterized in that, The transmit power of the first PRACH depends on the target receive power of the first PRACH, the target receive power depends on the initial target receive power corresponding to the target RO set, and the second information block indicates the initial target receive power.

13. The method according to any one of claims 9-12, characterized in that, Receive the first PUSCH in the target PO; Wherein, the first PUSCH belongs to a 2-step random access procedure, the target PO is a PO associated with the first PRACH in the target PO set, and the third information block indicates the target PO set corresponding to the target RO set.

14. The method according to any one of claims 9-13, characterized in that, Receive the first capability parameter and the second capability parameter; The first capability parameter and the second capability parameter respectively indicate that the sender of the first PRACH supports a 4-step random access procedure on a full-duplex symbol and a 2-step random access procedure on a full-duplex symbol.

15. The method according to any one of claims 9-14, characterized in that, The ROs in the first RO set and the ROs in the second RO set are each mapped to the synchronous broadcast signal.

16. A base station, characterized in that, The base station includes: one or more processors and a memory; the memory is coupled to the one or more processors, the memory is used to store computer program code, the computer program code including computer instructions, and the one or more processors call the computer instructions to cause the base station to perform the method as described in any one of claims 9-15.

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