Methods and apparatus used in nodes for wireless communications

Abstract

This application discloses a method and apparatus for use in a node for wireless communication. The apparatus comprises a first receiver that receives a first RRC signaling and a first information block, wherein a symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block, and a first transmitter that transmits a first random access preamble in each of a plurality of PRACH opportunities, wherein all of the plurality of PRACH opportunities occupy only symbols of the same symbol type from a variety of symbol types in the time domain, the variety of symbol types including at least a first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission.

Description

Technical Field

[0001] This application relates to a transmission method and a transmission apparatus in a wireless communication system, and more particularly, to a transmission method and a transmission apparatus for wireless signals in a wireless communication system that supports a cellular network.

Background Art

[0002] Transmitting a random access preamble using a plurality of PRACH (Physical Random Access Channel) opportunities is an effective means for improving uplink coverage.

Summary of the Invention

[0003] When symbols of various symbol types are constructed, the way in which symbols are designated to be occupied by multiple PRACHs in the time domain is a critical issue that must be addressed, and this application discloses a solution to the above problem. This application can be applied to various wireless communication scenarios, such as scenarios supporting full-duplex communication, scenarios supporting only half-duplex communication, eMBB (Enhanced Mobile Broadband), URLLC (Ultra-Reliable Low-Latency Communications), Vehicle Internet, Internet of Things, and NTN (Non-Terrestrial Networks), and achieves similar technical effects. Furthermore, using a unified solution for different scenarios (including, but not limited to, scenarios supporting full-duplex communication, scenarios supporting only half-duplex communication, eMBB, URLLC, Vehicle Internet, Internet of Things, and NTN) also helps to reduce hardware complexity and cost, or improve performance. Where there are no inconsistencies, any node embodiment and features in any embodiment of this application can be applied to any other node. Where there is no contradiction, the embodiments and features of this application can be combined in any way.

[0004] In one embodiment, the interpretation of terms in this application refers to the definitions of the TS36 series of standard protocols of 3GPP.

[0005] In one embodiment, the interpretation of terms in this application refers to the definitions of the TS38 series of standard protocols of 3GPP.

[0006] In one embodiment, the interpretation of terms in this application refers to the definitions of the TS37 series of standard protocols of 3GPP.

[0007] As one embodiment, the interpretation of terms in this application refers to the definitions of standard protocols of the IEEE (Institute of Electrical and Electronics Engineers).

[0008] This application discloses a method used in a first node for wireless communication, the method being described as follows: Receiving a first RRC signaling and a first information block, wherein the symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block, This includes sending a first random access preamble in each of multiple PRACH opportunities, All multiple PRACH opportunities occupy only symbols of the same symbol type among various symbol types in the time domain, and the various symbol types include at least a first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission.

[0009] In one embodiment, the problem to be solved by this application includes a method for determining the time-domain resources occupied by multiple transmissions of a single random access preamble.

[0010] In one embodiment, the problem to be solved by this application includes what the relationship is between symbols occupied by multiple PRACH opportunities in the time domain when multiple PRACH opportunities are used to transmit the same random access preamble.

[0011] In one embodiment, the problem to be solved by this application includes a method for reducing the complexity of reception at the receiving end or improving the gain of the merging process at the receiving end for multiple transmissions of a single random access preamble in multiple PRACH opportunities.

[0012] As one embodiment, the problem to be solved by this application includes a method for performing multiple transmissions of a single random access preamble in multiple PRACH opportunities after introducing a first symbol type.

[0013] As one embodiment, the problem to be solved by this application includes a method for performing multiple transmissions of a single random access preamble in multiple PRACH opportunities, after introducing symbols available for full-duplex operation.

[0014] In one embodiment, the problem to be solved by this application includes a method for improving the transmission performance of a random access preamble.

[0015] In one embodiment, the advantages of the above method include helping to improve uplink coverage.

[0016] In one embodiment, the advantages of the above method include its ability to improve the transmission performance of random access preambles.

[0017] In one embodiment, the advantages of the above method include helping to reduce the complexity of sending and receiving random access preambles.

[0018] In one embodiment, the advantages of the above method include facilitating the merging process of multiple PRACH transmissions at the receiving end by performing multiple PRACH (Physical Random Access Channel) transmissions with symbols of the same symbol type, thereby improving the transmission performance of PRACH.

[0019] In one embodiment, the advantages of the above method include the benefit of performing PRACH transmission with symbols available for full-duplex operation.

[0020] In one embodiment, the advantages of the method described above include good compatibility with existing 3GPP technical specifications.

[0021] According to one aspect of the present application, the above method is characterized in that at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling and is configured to be available for uplink transmission by the first information block.

[0022] According to one aspect of the present application, the above method is characterized in that the various symbol types further include a second symbol type, at least one symbol of the second symbol type is indicated as an uplink symbol by the first RRC signaling, and the symbol indicated as an uplink symbol by the first RRC signaling is not a symbol of the first symbol type.

[0023] As an embodiment, the advantages of the above method include having good compatibility with existing 3GPP technical specifications.

[0024] According to one aspect of the present application, the above method is characterized in that the first RRC signaling is tdd-UL-DL-ConfigurationCommon.

[0025] As an embodiment, the advantages of the above method include promoting the redefinition of cell-specific downlink symbols.

[0026] According to one aspect of the present application, the above method is characterized in that all of the plurality of PRACH opportunities occupy only symbols of the first symbol type in the time domain.

[0027] As an embodiment, the advantages of the above method include reducing the probability of collision between PRACH transmissions of symbols of symbol types other than the first symbol type (such as symbols of the second symbol type) among the various symbol types and improving system efficiency.

[0028] According to one aspect of the present application, the above method includes receiving a second information block, where the second information block is used to form a first PRACH opportunity group, and all of the plurality of PRACH opportunities belong to the first PRACH opportunity group.

[0029] According to one aspect of the present application, the above method includes that a first type of PRACH opportunity and a second type of PRACH opportunity are both associated with a first SS / PBCH block index, the first type of PRACH opportunity and the second type of PRACH opportunity respectively occupy symbols of different symbol types among various symbol types, the first type of PRACH opportunity and the second type of PRACH opportunity are configured to form a plurality of PRACH opportunity groups, each of the plurality of PRACH opportunity groups includes only one or more first type of PRACH opportunities or only one or more second type of PRACH opportunities, and the first PRACH opportunity group is one of the plurality of PRACH opportunity groups.

[0030] The present application discloses a method used in a second node for wireless communication. The method includes transmitting a first RRC signaling and a first information block, where the symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block, and receiving a first random access preamble in each of the plurality of PRACH opportunities. The present invention is characterized in that all of the multiple PRACH opportunities occupy only symbols of the same symbol type among various symbol types in the time domain, and each of the various symbol types includes at least one symbol of the first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission.

[0031] According to one aspect of this application, the above method is At least one symbol of a first symbol type is indicated as a downlink symbol by first RRC signaling and is configured by first information block to be available for uplink transmission.

[0032] According to one aspect of this application, the above method is Various symbol types further include a second symbol type, wherein at least one symbol of the second symbol type is indicated as an uplink symbol by the first RRC signaling, and the symbol indicated as an uplink symbol by the first RRC signaling is not a symbol of the first symbol type.

[0033] According to one aspect of this application, the above method is The first RRC signaling is characterized by being tdd-UL-DL-ConfigurationCommon.

[0034] According to one aspect of this application, the above method is All of the multiple PRACH opportunities are characterized in that they occupy only symbols of the first symbol type in the time domain.

[0035] According to one aspect of this application, the above method is This includes transmitting a second information block, The second information block is used to constitute the first PRACH opportunity group, characterized in that all of the multiple PRACH opportunities belong to the first PRACH opportunity group.

[0036] According to one aspect of this application, the above method is The first type of PRACH opportunity and the second type of PRACH opportunity are both associated with a first SS / PBCH block index, and the first type of PRACH opportunity and the second type of PRACH opportunity each occupy symbols of different symbol types from a variety of symbol types, and the first type of PRACH opportunity and the second type of PRACH opportunity are configured to form a plurality of PRACH opportunity groups, each of which contains only one or more first type PRACH opportunities or only one or more second type PRACH opportunities, and the first PRACH opportunity group is one of the plurality of PRACH opportunity groups.

[0037] This application discloses a first node used for wireless communication, the first node being, A first receiver that receives a first RRC signaling and a first information block, wherein the symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block, A first transmitter that transmits a first random access preamble in each of a plurality of PRACH opportunities, The present invention is characterized in that all of the multiple PRACH opportunities occupy only symbols of the same symbol type among various symbol types in the time domain, and each of the various symbol types includes at least one symbol of the first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission.

[0038] This application discloses a second node used for wireless communication, the second node being, A second transmitter that transmits a first RRC signaling and a first information block, wherein the symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block, A second receiver that receives a first random access preamble in each of multiple PRACH opportunities, The present invention is characterized in that all of the multiple PRACH opportunities occupy only symbols of the same symbol type among various symbol types in the time domain, and each of the various symbol types includes at least one symbol of the first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission.

[0039] Other features, purposes, and advantages of this application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. [Brief explanation of the drawing]

[0040] [Figure 1] A processing flowchart for the first node according to one embodiment of this application is shown. [Figure 2] A schematic diagram of a network architecture according to one embodiment of this application is shown. [Figure 3] A schematic diagram of a wireless protocol architecture for the user plane and control plane according to one embodiment of this application is shown. [Figure 4] A schematic diagram of a first communication device and a second communication device according to one embodiment of this application is shown. [Figure 5] A flowchart of signal transmission according to one embodiment of this application is shown. [Figure 6] A schematic diagram illustrating a second symbol type according to one embodiment of this application is shown. [Figure 7] A schematic diagram illustrating a first PRACH opportunity group according to one embodiment of this application is shown. [Figure 8] This diagram shows a schematic representation of the relationship between a plurality of PRACH opportunities, a first type of PRACH opportunity, a second type of PRACH opportunity, and a first SS / PBCH block index according to one embodiment of this application. [Figure 9] This diagram shows a schematic representation of the relationship between multiple PRACH opportunities and a first SS / PBCH block index according to one embodiment of this application. [Figure 10] This diagram illustrates the behavior of a first node in response to a first random access preamble transmitted in each of a plurality of PRACH opportunities, according to one embodiment of this application. [Figure 11] This shows a structural block diagram of a processing device in a first node device according to one embodiment of this application. [Figure 12] This shows a structural block diagram of a processing device in a second node device according to one embodiment of this application. [Modes for carrying out the invention]

[0041] The technical solutions of this application are described in further detail below, in conjunction with the accompanying drawings. It should be noted that, where there is no inconsistency, the embodiments and features of this application can be arbitrarily combined with each other.

[0042] Embodiment 1 Embodiment 1, as shown in Figure 1, illustrates a processing flowchart of the first node according to one embodiment of the present application.

[0043] In Embodiment 1, the first node of the present application receives a first RRC signaling and a first information block in step 101, and transmits a first random access preamble in each of a plurality of PRACH opportunities in step 102.

[0044] In Embodiment 1, a symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on a first information block, and all of the multiple PRACH opportunities occupy only symbols of the same symbol type from among various symbol types in the time domain, and the various symbol types include at least the first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission.

[0045] In one embodiment, the first RRC signaling includes at least one field in at least one IE (Information Element).

[0046] In one embodiment, the first RRC signaling is one IE.

[0047] In one embodiment, the first RRC signaling is a single field in a single IE.

[0048] In one embodiment, the first RRC signaling is a single RRC IE.

[0049] In one embodiment, the first RRC signaling includes one RRC parameter.

[0050] In one embodiment, the first RRC signaling includes time-domain configuration information.

[0051] In one embodiment, the first RRC signaling includes configuration information for UL / DL (Uplink / Downlink) TDD (Time Division Duplexing).

[0052] In one embodiment, the first RRC signaling includes tdd-UL-DL-ConfigurationCommon.

[0053] In one embodiment, the first RRC signaling includes tdd-UL-DL-ConfigurationDedicated.

[0054] In one embodiment, the first RRC signaling includes tdd-UL-DL-ConfigurationCommon and tdd-UL-DL-ConfigurationDedicated.

[0055] In one embodiment, the first RRC signaling is tdd-UL-DL-Config It is urationCommon.

[0056] In one embodiment, the first RRC signaling is tdd-UL-DL-ConfigurationDedicated.

[0057] In one embodiment, the name of the first RRC signaling includes tdd-UL-DL-ConfigurationCommon.

[0058] In one embodiment, the name of the first RRC signaling includes tdd-UL-DL-ConfigurationDedicated.

[0059] In one embodiment, the first information block includes physical layer signaling.

[0060] In one embodiment, the first information block includes DCI (Downlink Control Information).

[0061] In one embodiment, the first information block includes at least one field in a DCI format.

[0062] In one embodiment, the first information block includes signaling of the upper layer.

[0063] In one embodiment, the first information block includes a MAC CE (Medium Access Control Layer Control Element).

[0064] In one embodiment, the first information block includes RRC (Radio Resource Control) signaling.

[0065] In one embodiment, the first information block includes at least one field in at least one IE (information element).

[0066] In one embodiment, the first information block is DCI.

[0067] In one embodiment, the first information block is a single field in a DCI format.

[0068] In one embodiment, the first information block is a single MAC CE.

[0069] In one embodiment, the first information block is a field in a MAC CE.

[0070] In one embodiment, the first information block is a single RRC IE.

[0071] In one embodiment, the first information block is a single field in one IE.

[0072] In one embodiment, the first information block is RRC signaling.

[0073] In one embodiment, the name of the first information block includes subbands.

[0074] In one embodiment, the name of the first information block includes SBFD.

[0075] In one embodiment, the first information block includes configuration information for at least one frequency band resource.

[0076] In one embodiment, the first information block includes configuration information for time-domain resources.

[0077] In one embodiment, the first information block includes configuration information for resources for full-duplex operation.

[0078] In one embodiment, the first information block does not include tdd-UL-DL-ConfigurationCommon.

[0079] In one embodiment, the first information block is an RRC signaling other than the first RRC signaling.

[0080] In one embodiment, the first RRC signaling is used to indicate the link direction of at least one symbol.

[0081] In one embodiment, the link direction includes downlinks and uplinks.

[0082] In one embodiment, the symbol type corresponding to at least one symbol indicated as a downlink symbol by the first RRC signaling depends on a first information block.

[0083] In one embodiment, at least one symbol of a first symbol type is represented as a flexible symbol by first RRC signaling.

[0084] In one embodiment, the symbol type corresponding to at least one symbol represented as a flexible symbol by the first RRC signaling depends on a first information block.

[0085] In one embodiment, the target symbol is a symbol indicated by a first information block, and at least one symbol of a first symbol type is indicated as a flexible symbol by first RRC signaling and belongs to the target symbol.

[0086] In one embodiment, at least one symbol of a first symbol type is represented as a flexible symbol by first RRC signaling and configured by first information block to be available for full-duplex operation.

[0087] In one embodiment, a symbol represented as a flexible symbol by the first RRC signaling is not a symbol of the first symbol type.

[0088] In one embodiment, multiple PRACH opportunities are configured to send the same random access preamble.

[0089] In one embodiment, the advantages of the above method include its ability to improve the transmission performance of random access preambles.

[0090] In one embodiment, multiple PRACH opportunities send the same random access preamble. They are structured to be linked to one another in order to be trusted.

[0091] In one embodiment, the advantages of the above method include its ability to improve the transmission performance of random access preambles.

[0092] In one embodiment, the first random access preamble is transmitted repeatedly multiple times across multiple PRACH opportunities.

[0093] In one embodiment, the expression "transmit the first random access preamble at each of the multiple PRACH opportunities" means that multiple signals are transmitted at each of the multiple PRACH opportunities, and all of the multiple signals are generated based on the first random access preamble.

[0094] In one embodiment, the first random access preamble is mapped to a physical resource occupied by each of several PRACH opportunities before it is transmitted.

[0095] In one embodiment, multiple repetitions of a single PRACH are transmitted in multiple PRACH opportunities, and each of the multiple repetitions of a single PRACH carries a first random access preamble.

[0096] In one embodiment, transmissions in all multiple PRACH opportunities are triggered together.

[0097] In one embodiment, multiple PRACH opportunities are selected together to be used to send a first random access preamble.

[0098] In one embodiment, multiple PRACH opportunities are two PRACH opportunities.

[0099] In one embodiment, multiple PRACH opportunities are more than two PRACH opportunities.

[0100] In one embodiment, the multiple PRACH opportunities are three PRACH opportunities.

[0101] In one embodiment, the multiple PRACH opportunities are four PRACH opportunities.

[0102] In one embodiment, the multiple PRACH opportunities are five PRACH opportunities.

[0103] In one embodiment, the multiple PRACH opportunities are six PRACH opportunities.

[0104] In one embodiment, the multiple PRACH opportunities are seven PRACH opportunities.

[0105] In one embodiment, the multiple PRACH opportunities are eight PRACH opportunities.

[0106] In one embodiment, the multiple PRACH opportunities include up to 1024 PRACH opportunities.

[0107] In one embodiment, multiple PRACH opportunities are all valid PRACH opportunities.

[0108] In one embodiment, one valid PRACH opportunity can be used to send a random access preamble.

[0109] In one embodiment, a valid PRACH opportunity occupies only one symbol type among various symbol types in the time domain.

[0110] In one embodiment, one PRACH opportunity includes a configurable time-frequency resource.

[0111] In one embodiment, one PRACH opportunity is a PRACH resource reserved for sending a random access preamble.

[0112] In one embodiment, any two of the multiple PRACH opportunities do not overlap in the time domain.

[0113] In one embodiment, two of the multiple PRACH opportunities overlap in the time domain.

[0114] In one embodiment, the various symbol types include symbol types corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling.

[0115] In one embodiment, symbols occupied by any two of a plurality of PRACH opportunities in the time domain are correlated, and any two of the plurality of PRACH opportunities satisfy the following relationship: that two PRACH opportunities always occupy symbols of the same symbol type among various symbol types in the time domain.

[0116] In one embodiment, one prerequisite for a first node to decide to transmit a first random access preamble in each of a plurality of PRACH opportunities is that all of the plurality of PRACH opportunities occupy only symbols of the same symbol type among a variety of symbol types in the time domain.

[0117] In one embodiment, the advantages of the above method include the fact that it helps to save on equipment costs.

[0118] In one embodiment, the advantages of the above method include avoiding adverse effects on the merging process at the receiving end caused by introducing different transmission parameters (corresponding to different symbol types among various symbol types) in multiple transmissions across multiple PRACH opportunities.

[0119] In one embodiment, when the symbol type corresponding to a single symbol is one of various symbol types, then a single symbol is a symbol of one of the various symbol types.

[0120] In one embodiment, the expression "all of the multiple PRACH opportunities occupy only symbols of the same symbol type among various symbol types in the time domain" means that all of the multiple PRACH opportunities contain only symbols of the same symbol type among various symbol types in the time domain.

[0121] In one embodiment, the first symbol is a symbol included in one of a plurality of PRACH opportunities in the time domain, the first symbol is a symbol of a target symbol type, the target symbol type is a symbol type from a variety of symbol types, and any symbol included in each of the plurality of PRACH opportunities is a symbol of a target symbol type.

[0122] In one embodiment, the expression "all of the multiple PRACH opportunities occupy only symbols of the same symbol type among various symbol types in the time domain" means that all of the multiple PRACH opportunities overlap only with symbols of the same symbol type among various symbol types in the time domain.

[0123] In one embodiment, the first symbol is a symbol that overlaps with one of a plurality of PRACH opportunities in the time domain, the first symbol is a symbol of a target symbol type, the target symbol type is one of a variety of symbol types, and each of the plurality of PRACH opportunities overlaps only with symbols of the target symbol type.

[0124] In one embodiment, the expression "all of the multiple PRACH opportunities occupy only symbols of the same symbol type among various symbol types in the time domain" means that all of the multiple PRACH opportunities are located within symbols of the same symbol type among various symbol types in the time domain.

[0125] In one embodiment, all of the multiple PRACH opportunities are located within a time-domain resource occupied by symbols of the same symbol type among various symbol types in the time domain.

[0126] In one embodiment, a time-domain resource occupied by one of a plurality of PRACH opportunities includes at least a portion of the time-domain resource occupied by a first symbol, the first symbol being a symbol of a target symbol type, the target symbol type being one of a variety of symbol types, and all time-domain resources occupied by each of the plurality of PRACH opportunities are located within the time-domain resource occupied by the symbol of the target symbol type.

[0127] In one embodiment, the symbol occupied by one PRACH opportunity is the symbol for uplink transmission on the service cell where the PRACH is located.

[0128] In one embodiment, each of the multiple PRACH opportunities does not occupy symbols of any symbol type other than its own among various symbol types in the time domain.

[0129] In one embodiment, each of the multiple PRACH opportunities does not contain symbols of any symbol type other than the same symbol type among various symbol types in the time domain.

[0130] In one embodiment, each of the multiple PRACH opportunities does not overlap with symbols of any symbol type other than the same symbol type in the time domain.

[0131] In one embodiment, the expression "at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission" means that at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling and is determined to be used for uplink transmission based on the first information block.

[0132] In one embodiment, the expression "at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission" means that at least one of the first symbol type The symbol is indicated as a downlink symbol by the first RRC signaling and is configured by the first information block to be available for uplink transmission.

[0133] In one embodiment, the expression "at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission" means that at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling and is indicated by the first information block to be used for uplink transmission.

[0134] In one embodiment, the expression "at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission" means that at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling and is configured to be available for full-duplex operation.

[0135] In one embodiment, at least one symbol of a first symbol type is indicated as a downlink symbol by first RRC signaling and is configured by first information block to be available for full-duplex operation.

[0136] In one embodiment, any symbol of the first symbol type is not a symbol that is indicated as an uplink symbol by the first RRC signaling.

[0137] In one embodiment, a symbol that is indicated as a downlink symbol by the first RRC signaling and is not used for uplink transmission is not a symbol of the first symbol type.

[0138] In one embodiment, a symbol of the first symbol type is a symbol that can be used for full-duplex operation.

[0139] In one embodiment, the advantages of the above method include its ability to support full-duplex operation.

[0140] In one embodiment, the symbol of the first symbol type is a symbol used only for half-duplex operation.

[0141] In one embodiment, the expression "used for uplink transmission" includes being used to transmit uplink signals.

[0142] In one embodiment, the expression "used for uplink transmission" means at least "used for transmitting PRACH".

[0143] In one embodiment, the expression "used for uplink transmission" means at least "used for transmitting a PUSCH (Physical Uplink Shared Channel)."

[0144] In one embodiment, the expression "used for uplink transmission" means at least "used for transmitting PRACH and PUSCH".

[0145] As one embodiment, the meaning of the expression "used for uplink transmission" is at least This also includes being used to transmit PRACH, PUSCH, and PUCCH (Physical Uplink Control Channel).

[0146] In one embodiment, the expression "used for uplink transmission" means used to transmit at least one of PRACH, PUSCH, PUCCH, and SRS (Sounding Reference Signal).

[0147] In one embodiment, the symbol type corresponding to one symbol of the first symbol type is the first symbol type.

[0148] Embodiment 2 Embodiment 2 illustrates a schematic diagram of a network architecture according to this application, as shown in Figure 2.

[0149] Figure 2 illustrates the network architecture 200 of 5G NR, LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) systems. The 5G NR or LTE network architecture 200 may be referred to as EPS (Evolved Packet System) 200 or several other preferred terms. The EPS 200 may comprise one or more of the following: UE (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, EPC (Evolved Packet Core) / 5G-CN (5G Core Network) 210, HSS (Home Subscriber Server) 220, and Internet services 230. The EPS may interconnect with other access networks, but for simplicity, these entities / interfaces are not shown. As shown in the figure, the EPS provides packet switching services. However, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. The NG-RAN includes NR node B (gNB) 203 and other gNBs 204. A gNB 203 provides user plane and control plane protocol termination to a UE 201. A gNB 203 may be connected to other gNBs 204 via an Xn interface (e.g., backhaul). A gNB 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver device, transceiver device function, basic service set (BSS), extended service set (ESS), TRP (transceiver point), or any other preferred term. A gNB 203 provides a point of access to the EPC / 5G-CN 210 to the UE 201.Examples of UE201 include mobile phones, smartphones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband Internet of Things devices, mechanical communication devices, land vehicles, automobiles, wearable devices, or any other devices with similar functions. Those skilled in the art may also refer to UE201 as mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or any other preferred term. gNB203 is connected via the S1 / NG interface. It connects to the PC / 5G-CN210. The EPC / 5G-CN210 includes an MME (Mobility Management Entity) / AMF (Authentication Management Field) / UPF (User Plane Function) 211, other MME / AMF / UPF 214, an S-GW (Service Gateway) 212, and a P-GW (Packet Data Network Gateway) 213. The MME / AMF / UPF 211 is the control node that handles signaling between the UE 201 and the EPC / 5G-CN210. Generally, the MME / AMF / UPF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted via the S-GW 212, which itself connects to the P-GW 213. The P-GW 213 provides UE IP address assignment and other functions. P-GW213 connects to Internet service 230. Internet service 230 includes the operator's corresponding Internet Protocol services, which may specifically include the Internet, intranet, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0150] In one embodiment, UE201 corresponds to the first node in this application.

[0151] In one embodiment, gNB203 corresponds to the second node in this application.

[0152] In one embodiment, UE201 corresponds to the first node in this application, and gNB203 corresponds to the second node in this application.

[0153] In one embodiment, the gNB203 is a macrocellular base station.

[0154] In one embodiment, the gNB203 is a microcell base station.

[0155] As one embodiment, gNB203 is a picocell base station.

[0156] In one embodiment, gNB203 is a femtocell.

[0157] In one embodiment, the gNB203 is a base station device that supports large latency differences.

[0158] In one embodiment, the gNB203 is a flying platform device.

[0159] In one embodiment, the gNB203 is a satellite device.

[0160] Embodiment 3 Embodiment 3, as shown in Figure 3, provides a schematic diagram of one embodiment of the wireless protocol architecture of one user plane and one control plane according to the present application. Figure 3 is a schematic diagram illustrating one embodiment of the wireless protocol architecture for a user plane 350 and a control plane 300, and Figure 3 shows the wireless protocol architecture of the control plane 300 between a first communication node device (UE, gNB, or RSU in V2X) and a second communication node device (gNB, UE, or RSU in V2X), or two UEs using three layers, namely Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer is referred to herein as PHY 301. Layer 2 (L2 layer) 305 is above PHY 301 and is responsible for the links between the first and second communication node devices, and between the two UEs via PHY 301. L2 layer 305 includes MAC (Medium Access Control) sublayer 302, RLC (Radio Link Control) sublayer 303, and PDCP (Packet Convergence Protocol) sublayer 304, which are terminated at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets and provides handover support between the first and second communication node devices. The RLC sublayer 303 compensates for out-of-order reception due to HARQ by providing segmentation and reconstruction of upper-layer data packets, retransmission of lost data packets, and reordering of data packets. The MAC sublayer 302 provides multiplexing between logical channels and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a single cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operation. The RRC (Radio Resource Control) sublayer 306 at Layer 3 (L3 layer) in the control plane 300 is responsible for acquiring radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second and first communication node devices. The radio protocol architecture of the user plane 350 includes Layer 1 (L1 layer) and Layer 2 (L2 layer).The radio protocol architecture for the first and second communication node devices in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for physical layer 351, PDCP sublayer 354 in L2 layer 355, RLC sublayer 353 in L2 layer 355, and MAC sublayer 352 in L2 layer 355, except that the PDCP sublayer 354 also provides header compression of upper-layer data packets to reduce radio transmission overhead. The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356, which provides QoS streams and Data Radio Bearers (DRBs) to support service diversity. It is responsible for mapping between the Bearer and the other end. Although not shown in the diagram, the first communication node device may have several higher layers above L2 layer 355, including a network layer (e.g., IP layer) that terminates at the network-side P-GW and an application layer that terminates at the other end of the connection (e.g., remote UE, server, etc.).

[0161] As one embodiment, the wireless protocol architecture shown in Figure 3 is applicable to the first node of this application.

[0162] As one embodiment, the wireless protocol architecture shown in Figure 3 is applicable to the second node of this application.

[0163] In one embodiment, the first RRC signaling in this application is generated in the RRC sublayer 306.

[0164] In one embodiment, the first information block in this application is generated in the RRC sublayer 306.

[0165] In one embodiment, the first information block in this application is located in the MAC sublayer 302. It is generated in [location].

[0166] In one embodiment, the first information block in this application is generated in PHY301.

[0167] In one embodiment, the second information block in this application is generated in the RRC sublayer 306.

[0168] In one embodiment, the second information block in this application is generated in the MAC sublayer 302.

[0169] In one embodiment, the second information block in this application is generated in PHY301.

[0170] Embodiment 4 Embodiment 4, as shown in Figure 4, shows schematic diagrams of the first and second communication devices according to this application. Figure 4 is a block diagram of the first communication device 410 and the second communication device 450 communicating with each other within an access network.

[0171] The first communication device 410 comprises a controller / processor 475, memory 476, a receiving processor 470, a transmitting processor 416, a multi-antenna receiving processor 472, a multi-antenna transmitting processor 471, a transmitting / receiving device 418, and an antenna 420.

[0172] The second communication device 450 comprises a controller / processor 459, memory 460, data source 467, transmit processor 468, receive processor 456, multi-antenna transmit processor 457, multi-antenna receive processor 458, transmit / receive device 454, and antenna 452.

[0173] In transmission from the first communication device 410 to the second communication device 450, the first communication device 410 provides upper-layer data packets from the core network to the controller / processor 475. The controller / processor 475 implements L2 layer functions. In transmission from the first communication device 410 to the first communication device 450, the controller / processor 475 provides the second communication device 450 with header compression, encryption, packet splitting and reordering, multiplexing between logical channels and transport channels, and radio resource allocation based on various priority metrics. The controller / processor 475 is also responsible for retransmitting lost packets and signaling to the second communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmitting processor 416 implements coding and interleaving to facilitate forward error correction (FEC) in the second communication device 450, as well as mapping of signal clusters based on various modulation schemes (e.g., two-phase-shifted modulation (BPSK), four-phase-shifted modulation (QPSK), M-phase-shifted modulation (M-PSK), and M-quadrature-amplitude modulation (M-QAM)). The multi-antenna transmitting processor 471 performs digital spatial precoding, including codebook-based and non-codebook-based precoding, as well as beamforming processing, on the coded and modulated symbols to generate one or more spatial streams. The transmitting processor 416 then maps each spatial stream to subcarriers, multiplexes them with a reference signal in the time domain and / or frequency domain (e.g., a pilot frequency), and then uses an inverse fast Fourier transform (IFFT) to determine the physical carriers that carry the time-domain multicarrier symbol stream. A channel is generated. The multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multi-carrier symbol stream. Each transmit device 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, which is then provided to different antennas 420.

[0174] In transmission from the first communication device 410 to the second communication device 450, each receiving device 454 in the second communication device 450 receives the signal via its corresponding antenna 452. Each receiving device 454 reconstructs the information modulated on the radio frequency carrier, converts the radio frequency stream into a baseband multicarrier symbol stream, and provides the baseband multicarrier symbol stream to the receiving processor 456. The receiving processor 456 and the multi-antenna receiving processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiving processor 458 performs a receive analog precoding / beamforming operation on the baseband multicarrier symbol stream from the receiving device 454. The receiving processor 456 uses a Fast Fourier Transform (FFT) to convert the baseband multicarrier symbol stream from the time domain to the frequency domain after the receive analog precoding / beamforming operation. In the frequency domain, the physical layer data signal and reference signal are demultiplexed by the receiving processor 456. The reference signal is used for channel estimation, and the data signal is reconstructed after multi-antenna detection in the multi-antenna receiving processor 458 to reconstruct an arbitrary spatial stream destined for the second communication device 450. Symbols on each spatial stream are demodulated and reconstructed in the receiving processor 456 to generate a soft decision. The receiving processor 456 then decodes and deinterleaves the soft decision to reconstruct the upper layer data and control signals transmitted over the physical channel by the first communication device 410. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program code and data. The memory 460 may be referred to as a computer-readable medium.In transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 provides demultiplexing between the transport channel and logical channel, packet reconstruction, decryption, header decompression, and control signal processing to reconstruct the upper-layer data packets from the core network. The upper-layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to L3 for L3 processing.

[0175] In transmission from the second communication device 450 to the first communication device 410, the second communication device 450 uses a data source 467 to provide upper-layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functions in the first communication device 410 described in the transmission from the first communication device 410 to the second communication device 450, the controller / processor 459 implements header compression, encryption, packet splitting and reordering, and multiplexing between logical channels and transport channels based on radio resource allocation, and implements L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmitting lost packets and signaling to the first communication device 410. The transmit processor 468 performs modulation mapping and channel coding processing, and the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, as well as beamforming processing. Next, the transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream, and this symbol stream is After analog precoding / beamforming operation in the multi-antenna transmit processor 457, the signal is provided to different antennas 452 via the transmit device 454. Each transmit device 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a radio frequency symbol stream, which is then provided to the antenna 452.

[0176] In transmission from the second communication device 450 to the first communication device 410, the functions of the first communication device 410 are the same as the receiving functions of the second communication device 450 described in the transmission from the first communication device 410 to the second communication device 450. Each receiving device 418 receives radio frequency signals via its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly implement the functions of the L1 layer. The controller / processor 475 implements the functions of the L2 layer. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be referred to as computer-readable media. In transmission from the second communication device 450 to the first communication device 410, the controller / processor 475 provides demultiplexing between the transport channel and logical channel, packet reconstruction, decryption, header decompression, and control signal processing to recover the upper layer data packets from the UE 450. The upper layer data packets from the controller / processor 475 can then be provided to the core network.

[0177] In one embodiment, the first node in this application comprises a second communication device 450, and the second node in this application comprises a first communication device 410.

[0178] As one sub-embodiment of the above embodiment, the first node is a user device and the second node is a relay node.

[0179] As one sub-embodiment of the above embodiment, the first node is user equipment and the second node is a base station device.

[0180] As one sub-embodiment of the above embodiment, the first node is a relay node and the second node is a base station device.

[0181] As one sub-embodiment of the above embodiment, the second communication device 450 comprises at least one controller / processor, the at least one controller / processor responsible for HARQ operation.

[0182] As one sub-embodiment of the above embodiment, the first communication device 410 comprises at least one controller / processor, the at least one controller / processor responsible for HARQ operation.

[0183] As one sub-embodiment of the above embodiment, the first communication device 410 comprises at least one controller / processor, the at least one controller / processor responsible for performing error detection using acknowledgment (ACK) and / or negation (NACK) protocols to support HARQ operation.

[0184] In one embodiment, the second communication device 450 comprises at least one processor and at least one memory, the at least one memory containing computer program code, and the at least one memory and the computer program code contain at least It is configured to be used with one processor. The second communication device 450 receives at least a first RRC signaling and a first information block, and the symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block, transmits a first random access preamble in each of a plurality of PRACH opportunities, all of the plurality of PRACH opportunities occupy only symbols of the same symbol type from a variety of symbol types in the time domain, the variety of symbol types include at least the first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission.

[0185] As one sub-embodiment of the above embodiment, the second communication device 450 corresponds to the first node in this application.

[0186] In one embodiment, the second communication device 450 includes a memory for storing a computer-readable instruction program that, when executed by at least one processor, generates an action, the action comprising receiving a first RRC signaling and a first information block, wherein the symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block, and transmitting a first random access preamble in each of a plurality of PRACH opportunities, wherein all of the plurality of PRACH opportunities occupy only symbols of the same symbol type from a variety of symbol types in the time domain, the variety of symbol types including at least the first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission.

[0187] As one sub-embodiment of the above embodiment, the second communication device 450 corresponds to the first node in this application.

[0188] In one embodiment, the first communication device 410 comprises at least one processor and at least one memory, the at least one memory containing computer program code, and the at least one memory and computer program code are configured to be used together with the at least one processor. The first communication device 410 transmits at least a first RRC signaling and a first information block, the symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block, receives a first random access preamble in each of a plurality of PRACH opportunities, all of the plurality of PRACH opportunities occupy only symbols of the same symbol type from a variety of symbol types in the time domain, the variety of symbol types include at least the first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission.

[0189] As one sub-embodiment of the above embodiment, the first communication device 410 corresponds to the second node in this application.

[0190] In one embodiment, the first communication device 410 includes a memory for storing a computer-readable instruction program that, when executed by at least one processor, generates an action, the action of transmitting a first RRC signaling and a first information block, which is indicated as an uplink symbol by the first RRC signaling. A symbol type corresponding to at least one symbol other than a symbol depends on a first information block, and includes transmitting and receiving a first random access preamble in each of a plurality of PRACH opportunities, wherein all of the plurality of PRACH opportunities occupy only symbols of the same symbol type from a variety of symbol types in the time domain, the variety of symbol types include at least the first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by first RRC signaling but can be used for uplink transmission.

[0191] As one sub-embodiment of the above embodiment, the first communication device 410 corresponds to the second node in this application.

[0192] In one embodiment, at least one of {antenna 452, receiving device 454, multi-antenna receiving processor 458, receiving processor 456, controller / processor 459, memory 460, and data source 467} is used in this application to receive the first RRC signaling.

[0193] In one embodiment, at least one of {antenna 420, transmitting device 418, multi-antenna transmitting processor 471, transmitting processor 416, controller / processor 475, and memory 476} is used to transmit the first RRC signaling in this application.

[0194] In one embodiment, at least one of {antenna 452, receiving device 454, multi-antenna receiving processor 458, receiving processor 456, controller / processor 459, memory 460, and data source 467} is used in this application to receive a first information block.

[0195] In one embodiment, at least one of {antenna 420, transmitting device 418, multi-antenna transmitting processor 471, transmitting processor 416, controller / processor 475, and memory 476} is used in this application to transmit a first information block.

[0196] In one embodiment, at least one of {antenna 452, receiving device 454, multi-antenna receiving processor 458, receiving processor 456, controller / processor 459, memory 460, and data source 467} is used in this application to receive a second information block.

[0197] In one embodiment, at least one of {antenna 420, transmitting device 418, multi-antenna transmitting processor 471, transmitting processor 416, controller / processor 475, and memory 476} is used in this application to transmit a second information block.

[0198] In one embodiment, at least one of {antenna 452, transmitting device 454, multi-antenna transmitting processor 458, transmitting processor 468, controller / processor 459, memory 460, and data source 467} is used in this application to transmit a first random access preamble.

[0199] In one embodiment, at least one of {antenna 420, receiving device 418, multi-antenna receiving processor 472, receiving processor 470, controller / processor 475, and memory 476} is used in this application to receive a first random access preamble.

[0200] Embodiment 5 Embodiment 5 illustrates a flowchart of signal transmission according to one embodiment of the present application, as shown in Figure 5. In Figure 5, the first node U1 and the second node U2 communicate via an air interface. In particular, the steps in the dotted block F1 in Figure 5 are optional, and in Figure 5, the order between the step pair {S521, S511} and the step pair {S522, S512} does not represent a specific time relationship.

[0201] The first node U1 receives the first RRC signaling and the first information block in step S511, receives the second information block in step S512, and transmits the first random access preamble in each of the multiple PRACH opportunities in step S513.

[0202] The second node U2 transmits the first RRC signaling and the first information block in step S521, transmits the second information block in step S522, and receives the first random access preamble in each of the multiple PRACH opportunities in step S523.

[0203] In Embodiment 5, the symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block, and all of the multiple PRACH opportunities occupy only symbols of the same symbol type among the various symbol types in the time domain, and the various symbol types include at least the first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling and is configured by the first information block to be available for uplink transmission, and the various symbol types further include the second symbol type, and at least the second symbol type One symbol is indicated as an uplink symbol by a first RRC signaling, and the symbol indicated as an uplink symbol by the first RRC signaling is not a symbol of a first symbol type, and the first RRC signaling is tdd-UL-DL-ConfigurationCommon, and the second information block is used to constitute a first PRACH opportunity group, and all of the multiple PRACH opportunities belong to the first PRACH opportunity group, and all of the multiple PRACH opportunities occupy only symbols of a first symbol type in the time domain, or all of the multiple PRACH opportunities occupy only symbols of a second symbol type in the time domain.

[0204] As a sub-embodiment of Embodiment 5, one prerequisite for the first node U1 to decide to transmit a first random access preamble in each of a plurality of PRACH opportunities is that all of the plurality of PRACH opportunities occupy only symbols of the same symbol type among a variety of symbol types in the time domain.

[0205] As one sub-embodiment of Embodiment 5, both the first and second information blocks are RRC signaling.

[0206] In one embodiment, the first node U1 is the first node in this application.

[0207] In one embodiment, the second node U2 is the second node in this application.

[0208] In one embodiment, the first node U1 is a single UE.

[0209] In one embodiment, the second node U2 is a base station.

[0210] In one embodiment, the air interface between the second node U2 and the first node U1 is the Uu interface.

[0211] In one embodiment, the air interface between the second node U2 and the first node U1 includes a cellular link.

[0212] In one embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between the base station device and the user equipment.

[0213] In one embodiment, the air interface between the second node U2 and the first node U1 includes a wireless interface between the satellite device and the user equipment.

[0214] In one embodiment, a step exists within the dotted line block F1.

[0215] In one embodiment, there are no steps within the dotted line block F1.

[0216] In one embodiment, the first RRC signaling is received before the first information block.

[0217] In one embodiment, the first RRC signaling is received after the first information block.

[0218] In one embodiment, the first RRC signaling and the first information block are received simultaneously.

[0219] In one embodiment, the first RRC signaling is received before the second information block.

[0220] In one embodiment, the first RRC signaling is received after the second information block.

[0221] In one embodiment, the first RRC signaling and the second information block are received simultaneously.

[0222] In one embodiment, the first information block is received before the second information block.

[0223] In one embodiment, the first information block is received after the second information block.

[0224] In one embodiment, the first information block and the second information block are received simultaneously.

[0225] In one embodiment, the expression "receive a first random access preamble at each of the multiple PRACH opportunities" includes the second node U2 obtaining the first random access preamble after performing a merge process on the signals received at all of the multiple PRACH opportunities.

[0226] In one embodiment, the expression "receiving the first random access preamble in each of the multiple PRACH opportunities" means that the second node U2 performs multiple independent detections of the first random access preamble in each of the multiple PRACH opportunities. Includes.

[0227] Embodiment 6 Embodiment 6, as shown in Figure 6, illustrates a schematic diagram of a second symbol type according to one embodiment of the present application.

[0228] In Embodiment 6, the various symbol types further include a second symbol type, where at least one symbol of the second symbol type is indicated as an uplink symbol by the first RRC signaling.

[0229] In one embodiment, a symbol indicated as an uplink symbol by the first RRC signaling is not a symbol of the first symbol type.

[0230] In one embodiment, each symbol of the second symbol type is not a symbol of the first symbol type, and at least one symbol of the second symbol type is at least N symbols after the last downlink symbol and at least N symbols after the last SS / PBCH block symbol, rather than before the SS / PBCH block (synchronization signal and physical broadcast channel block) in the PRACH slot, where N depends on the preamble SCS (Subcarrier spacing).

[0231] In one embodiment, N and different values ​​of different preamble SCS follow a predefined mapping rule.

[0232] In one embodiment, the symbol type corresponding to one symbol of the second symbol type is the second symbol type.

[0233] In one embodiment, the target symbol is a symbol indicated by a first information block, and at least one symbol of a second symbol type is indicated as a flexible symbol by first RRC signaling and does not belong to the target symbol.

[0234] In one embodiment, any symbol of the first symbol type is not a symbol of the second symbol type, and any symbol of the second symbol type is not a symbol of the first symbol type.

[0235] In one embodiment, the various symbol types include only the first symbol type and the second symbol type.

[0236] In one embodiment, the various symbol types further include symbol types other than the first and second symbol types.

[0237] In one embodiment, the various symbol types include only the first symbol type and the third symbol type.

[0238] In one embodiment, the various symbol types further include symbol types other than the first and third symbol types.

[0239] In one embodiment, various symbol types include a third symbol type, and any symbol of the third symbol type is sidelinked by the first RRC signaling. It is shown as "volt".

[0240] In one embodiment, the various symbol types include only the first and fourth symbol types.

[0241] In one embodiment, the various symbol types further include symbol types other than the first and fourth symbol types.

[0242] In one embodiment, the various symbol types include a fourth symbol type, where at least one symbol of the fourth symbol type cannot be used for downlink transmission and cannot be used for uplink transmission.

[0243] In one embodiment, the advantages of the above method include promoting power saving on the network side.

[0244] In one embodiment, all of the multiple PRACH opportunities occupy only symbols of a first symbol type in the time domain, or all of the multiple PRACH opportunities occupy only symbols of a second symbol type in the time domain.

[0245] In one embodiment, the advantages of the above method include facilitating the acquisition of more optional PRACH resources and gains resulting from better merging processing at the receiving end.

[0246] Embodiment 7 Embodiment 7, as shown in Figure 7, illustrates a schematic diagram of a first PRACH opportunity group according to one embodiment of the present application.

[0247] In Embodiment 7, the first node of the present application receives a second information block, which is used to constitute a first PRACH opportunity group, and all of the multiple PRACH opportunities belong to the first PRACH opportunity group.

[0248] In one embodiment, the second information block includes upper-layer signaling.

[0249] In one embodiment, the second information block includes MAC CE.

[0250] In one embodiment, the second information block includes RRC signaling.

[0251] In one embodiment, the second information block includes at least one field in at least one IE.

[0252] In one embodiment, the second information block is a single MAC CE.

[0253] In one embodiment, the second information block is a field in a MAC CE.

[0254] In one embodiment, the second information block is a single RRC IE.

[0255] In one embodiment, the second information block is a field in one IE.

[0256] In one embodiment, the second information block is RRC signaling.

[0257] In one embodiment, the second information block includes random access configuration information.

[0258] In one embodiment, a second information block is used to indicate the number of PRACH opportunities included in the first PRACH opportunity group.

[0259] In one embodiment, a second information block is used to indicate that all PRACH opportunities within a first PRACH opportunity group are related to one another.

[0260] In one embodiment, the first PRACH opportunity group is configured to send the same random access preamble.

[0261] In one embodiment, only the first PRACH opportunity group includes multiple PRACH opportunities.

[0262] In one embodiment, the first PRACH opportunity group further includes at least one PRACH opportunity other than the plurality of PRACH opportunities.

[0263] In one embodiment, all PRACH opportunities within the first PRACH opportunity group are valid PRACH opportunities.

[0264] In one embodiment, at least one PRACH opportunity in the first PRACH opportunity group is not a valid PRACH opportunity.

[0265] In one embodiment, the first PRACH opportunity group further includes at least one PRACH opportunity other than the plurality of PRACH opportunities, all of which occupy only symbols of the target symbol type in the time domain, and each PRACH opportunity other than the plurality of PRACH opportunities in the first PRACH opportunity group occupies symbols of a symbol type other than the target symbol type from among various symbol types, the target symbol type being one of the various symbol types.

[0266] In one embodiment, the first PRACH opportunity group further includes at least one PRACH opportunity other than the plurality of PRACH opportunities, all of which occupy only symbols of the target symbol type in the time domain, and each active PRACH machine other than the plurality of PRACH opportunities in the first PRACH opportunity group occupies symbols of a symbol type other than the target symbol type from among various symbol types, the target symbol type being one of the various symbol types.

[0267] In one embodiment, the target symbol type is a first symbol type.

[0268] In one embodiment, the target symbol type is a symbol type other than the first symbol type among various symbol types.

[0269] In one embodiment, the target symbol type is a second symbol type.

[0270] In one embodiment, the target symbol type is a third symbol type.

[0271] In one embodiment, the target symbol type is a fourth symbol type.

[0272] As one embodiment, the first PRACH opportunity group further includes at least one PRACH opportunity other than the plurality of PRACH opportunities. All of the plurality of PRACH opportunities occupy only symbols of the second symbol type in the time domain, and each PRACH opportunity other than the plurality of PRACH opportunities within the first PRACH opportunity group occupies only symbols of the first symbol type.

[0273] As one embodiment, the first PRACH opportunity group further includes at least one PRACH opportunity other than the plurality of PRACH opportunities. All of the plurality of PRACH opportunities occupy only symbols of the first symbol type in the time domain, and each PRACH opportunity other than the plurality of PRACH opportunities within the first PRACH opportunity group occupies only symbols of the second symbol type.

[0274] As one embodiment, the first node determines that the first random access preamble is not transmitted in a PRACH opportunity other than the plurality of PRACH opportunities within the first PRACH opportunity group.

[0275] As one embodiment, the advantage of the above method includes avoiding the adverse effect on the merge processing at the receiving end caused by incorporating different transmission parameters (corresponding to different symbol types among various symbol types) in a plurality of transmissions in the first PRACH opportunity group.

[0276] As one embodiment, when at least one PRACH opportunity group is configured, the first node treats one PRACH opportunity group as one PRACH opportunity during at least a part of the random access process.

[0277] Embodiment 8 Embodiment 8 illustrates a schematic diagram of the relationship between a plurality of PRACH opportunities, a first type of PRACH opportunity, a second type of PRACH opportunity, and a first SS / PBCH block index according to an embodiment of the present application, as shown in FIG. 8.

[0278] In Embodiment 8, both the first type of PRACH opportunity and the second type of PRACH opportunity are associated with the first SS / PBCH block index, and the first type of PRACH opportunity and the second type of PRACH opportunity each occupy symbols of different symbol types from among various symbol types, and each of the multiple PRACH opportunities is a first type PRACH opportunity.

[0279] In one embodiment, a first type of PRACH opportunity occupies only symbols of a first symbol type, and a second type of PRACH opportunity occupies only symbols of a second symbol type.

[0280] In one embodiment, a second type of PRACH opportunity occupies only symbols of the first symbol type, and a first type of PRACH opportunity occupies only symbols of the second symbol type.

[0281] In one embodiment, both the first type of PRACH opportunity and the second type of PRACH opportunity are valid PRACH opportunities.

[0282] In one embodiment, the first type of PRACH opportunity and the second type of PRACH opportunity are configured to form a plurality of PRACH opportunity groups, each of which contains at least one first type of PRACH opportunity, or The first PRACH opportunity group includes at least one second type of PRACH opportunity, and the first PRACH opportunity group is one of several PRACH opportunity groups.

[0283] Embodiment 9 Embodiment 9, as shown in Figure 9, illustrates a schematic diagram of the relationship between multiple PRACH opportunities and a first SS / PBCH block index according to one embodiment of the present application.

[0284] In Embodiment 9, all PRACH opportunities are associated with a first SS / PBCH block index, and all valid PRACH opportunities associated with the first SS / PBCH block index occupy only symbols of the same symbol type among various symbol types in the time domain.

[0285] In one embodiment, all valid PRACH opportunities in a first PRACH opportunity group are associated with a first SS / PBCH block index.

[0286] In one embodiment, a relationship between one valid PRACH opportunity and one SS / PBCH block index can be configured.

[0287] In one embodiment, when one valid PRACH opportunity is mapped to one SS / PBCH block index according to the configuration of RRC signaling, the valid PRACH opportunity is associated with that SS / PBCH block index.

[0288] In one embodiment, when a valid PRACH opportunity is mapped to multiple SS / PBCH block indices according to the configuration of RRC signaling, the valid PRACH opportunity is associated with each of those multiple SS / PBCH block indices.

[0289] In one embodiment, when one SS / PBCH block index is used to indicate one valid PRACH opportunity, the valid PRACH opportunity is associated with that SS / PBCH block index.

[0290] In one embodiment, when a single SS / PBCH block index is used to represent multiple valid PRACH opportunities, each of the multiple valid PRACH opportunities is associated with that SS / PBCH block index.

[0291] Embodiment 10 As shown in FIG. 10, Embodiment 10 illustrates a schematic explanatory diagram of the behavior of a first node that responds to a first random access preamble transmitted in each of a plurality of PRACH opportunities according to an embodiment of the present application.

[0292] In Embodiment 10, in response to the first random access preamble transmitted in each of the plurality of PRACH opportunities, the first node performs monitoring in a first time window, and the first time window occupies the duration of at least one slot.

[0293] As one embodiment, the meaning of the expression "the first node performs monitoring in the first time window" is that the first node monitors, in the first time window, a DCI format for responding to the first random access preamble transmitted in each of the plurality of PRACH opportunities.

[0294] As one embodiment, the meaning of the expression "the first node performs monitoring in the first time window" is that the first node attempts to detect, in the first time window, DCI format 1_0 in which CRC (Cyclic Redundancy Check) is scrambled by the corresponding RA-RNTI. yclic Redundancy Check, Cyclic Redundancy Check) is scrambled by the corresponding RA-RNTI.

[0295] As one embodiment, the meaning of the expression "the first node performs monitoring in the first time window" is that the first node monitors, in the first time window, a DCI format of a random access response (RAR, Random Access Response).

[0296] As one embodiment, the meaning of the expression "the first node performs monitoring in the first time window" is that the first node monitors, in the first time window, a DCI format for scheduling a PDSCH (Physical Downlink Shared Channel) with RAR UL grant information.

[0297] In one embodiment, the first time window is a PDCCH (Physical Downlink) of the first type PDCCH CSS set (Type 1-PDCCH CSS set). Starting with the first symbol occupied by the earliest CORESET (Control Resource Set) configured to receive the Control Channel (physical downlink control channel), this is at least one symbol that is later than the last symbol occupied by the most recent PRACH opportunity among multiple PRACH opportunities.

[0298] In one embodiment, the advantages of the above method include reducing the delay of the random access response (RAR).

[0299] In one embodiment, the first time window begins with a first symbol occupied by the earliest CORESET configured to receive a PDCCH (Physical Downlink Control Channel) of a first type PDCCH CSS set (Type 1-PDCCH CSS set), which is at least one symbol later than the last symbol occupied by the newest PRACH opportunity in the first PRACH opportunity group.

[0300] In one embodiment, the first type of PDCCH CSS set is a common search space set (CSS set).

[0301] In one embodiment, a first type of PDCCH CSS set is comprised of ra-SearchSpace in PDCCH-ConfigCommon.

[0302] In one embodiment, a first type of PDCCH CSS set is used to detect DCI formats scrambled by RA-RNTI, MsgB-RNTI, or TC-RNTI in the primary cell, with its CRC.

[0303] In one embodiment, the first time window is a time window used to monitor random access responses (RARs).

[0304] Embodiment 11 Embodiment 11 illustrates a structural block diagram of a processing device in a first node device, as shown in Figure 11. In Figure 11, the processing device A00 of the first node device comprises a first receiver A01 and a first transmitter A02.

[0305] In one embodiment, the first node device A00 is a user device.

[0306] In one embodiment, the first node device A00 is a relay node.

[0307] In one embodiment, the first node device A00 is a vehicle-mounted communication device.

[0308] In one embodiment, the first node device A00 is a conventional user device.

[0309] In one embodiment, the first node device A00 is a form of UE that supports a configuration related to full-duplex operation.

[0310] In one embodiment, the first receiver A01 comprises at least one of the antenna 452, receiving device 454, multi-antenna receiving processor 458, receiving processor 456, controller / processor 459, memory 460, and data source 467 shown in Figure 4 of this application.

[0311] In one embodiment, the first receiver A01 comprises at least the first five of the following: antenna 452, receiving device 454, multi-antenna receiving processor 458, receiving processor 456, controller / processor 459, memory 460, and data source 467, as shown in Figure 4 of this application.

[0312] In one embodiment, the first receiver A01 comprises at least the first four of the following: antenna 452, receiving device 454, multi-antenna receiving processor 458, receiving processor 456, controller / processor 459, memory 460, and data source 467, as shown in Figure 4 of this application.

[0313] In one embodiment, the first receiver A01 comprises at least the first three of the following: antenna 452, receiving device 454, multi-antenna receiving processor 458, receiving processor 456, controller / processor 459, memory 460, and data source 467, as shown in Figure 4 of this application.

[0314] In one embodiment, the first receiver A01 comprises at least the first two of the following: antenna 452, receiving device 454, multi-antenna receiving processor 458, receiving processor 456, controller / processor 459, memory 460, and data source 467, as shown in Figure 4 of this application.

[0315] In one embodiment, the first transmitter A02 comprises at least one of the following: antenna 452, transmitting device 454, multi-antenna transmitting device processor 457, transmitting processor 468, controller / processor 459, memory 460, and data source 467, as shown in Figure 4 of this application.

[0316] In one embodiment, the first transmitter A02 comprises at least the first five of the following: antenna 452, transmitting device 454, multi-antenna transmitting device processor 457, transmitting processor 468, controller / processor 459, memory 460, and data source 467, as shown in Figure 4 of this application.

[0317] In one embodiment, the first transmitter A02 comprises at least the first four of the following: antenna 452, transmitting device 454, multi-antenna transmitting device processor 457, transmitting processor 468, controller / processor 459, memory 460, and data source 467, as shown in Figure 4 of this application.

[0318] In one embodiment, the first transmitter A02 includes the antenna 452, transmitting device 454, multi-antenna transmitting device processor 457, and transmitting processor 46 in Figure 4 of this application. 8. It comprises at least the first three of the following: controller / processor 459, memory 460, and data source 467.

[0319] In one embodiment, the first transmitter A02 comprises at least the first two of the following: antenna 452, transmitting device 454, multi-antenna transmitting device processor 457, transmitting processor 468, controller / processor 459, memory 460, and data source 467, as shown in Figure 4 of this application.

[0320] In one embodiment, a first receiver A01 receives a first RRC signaling and a first information block, and the symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block, and a first transmitter A02 transmits a first random access preamble in each of a plurality of PRACH opportunities, and all of the plurality of PRACH opportunities occupy only symbols of the same symbol type from a variety of symbol types in the time domain, and the variety of symbol types includes at least a first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission.

[0321] In one embodiment, at least one symbol of a first symbol type is indicated as a downlink symbol by first RRC signaling and is configured by first information block to be available for uplink transmission.

[0322] In one embodiment, the various symbol types further include a second symbol type, where at least one symbol of the second symbol type is indicated as an uplink symbol by the first RRC signaling, and the symbol indicated as an uplink symbol by the first RRC signaling is not a symbol of the first symbol type.

[0323] In one embodiment, the first RRC signaling is tdd-UL-DL-ConfigurationCommon.

[0324] In one embodiment, all of the multiple PRACH opportunities occupy only symbols of the first symbol type in the time domain.

[0325] In one embodiment, the first receiver A01 receives a second information block, which is used to constitute a first PRACH opportunity group, and all of the multiple PRACH opportunities belong to the first PRACH opportunity group.

[0326] In one embodiment, both a first type of PRACH opportunity and a second type of PRACH opportunity are associated with a first SS / PBCH block index, and the first type of PRACH opportunity and the second type of PRACH opportunity each occupy symbols of different symbol types from a variety of symbol types, and the first type of PRACH opportunity and the second type of PRACH opportunity are configured to form a plurality of PRACH opportunity groups, each of which contains only one or more first type PRACH opportunities or only one or more second type PRACH opportunities, and the first PRACH opportunity group is one of the plurality of PRACH opportunity groups.

[0327] Embodiment 12 Embodiment 12 illustrates a structural block diagram of a processing device in a second node device, as shown in Figure 12. In Figure 12, the processing device of the second node device B00 comprises a second transmitter B01 and a second receiver B02.

[0328] In one embodiment, the second node device B00 is a base station.

[0329] In one embodiment, the second node device B00 is a satellite device.

[0330] In one embodiment, the second node device B00 is a relay node.

[0331] In one embodiment, the second node device B00 is a base station device that supports full-duplex operation.

[0332] In one embodiment, the second node device B00 is a base station that supports only half-duplex operation.

[0333] In one embodiment, the second node device B00 is one of a test device, a test instrument, and a test meter.

[0334] In one embodiment, the second transmitter B01 comprises at least one of the antenna 420, transmitting device 418, multi-antenna transmitting processor 471, transmitting processor 416, controller / processor 475, and memory 476 shown in Figure 4 of this application.

[0335] In one embodiment, the second transmitter B01 comprises at least the first five of the following: antenna 420, transmitting device 418, multi-antenna transmitting processor 471, transmitting processor 416, controller / processor 475, and memory 476, as shown in Figure 4 of this application.

[0336] In one embodiment, the second transmitter B01 comprises at least the first four of the following: antenna 420, transmitting device 418, multi-antenna transmitting processor 471, transmitting processor 416, controller / processor 475, and memory 476, as shown in Figure 4 of this application.

[0337] In one embodiment, the second transmitter B01 comprises at least the first three of the following: antenna 420, transmitting device 418, multi-antenna transmitting processor 471, transmitting processor 416, controller / processor 475, and memory 476, as shown in Figure 4 of this application.

[0338] In one embodiment, the second transmitter B01 comprises at least the first two of the following: antenna 420, transmitting device 418, multi-antenna transmitting processor 471, transmitting processor 416, controller / processor 475, and memory 476, as shown in Figure 4 of this application.

[0339] In one embodiment, the second receiver B02 comprises at least one of the antenna 420, receiving device 418, multi-antenna receiving processor 472, receiving processor 470, controller / processor 475, and memory 476 shown in Figure 4 of this application.

[0340] In one embodiment, the second receiver B02 comprises at least the first five of the following: antenna 420, receiving device 418, multi-antenna receiving processor 472, receiving processor 470, controller / processor 475, and memory 476, as shown in Figure 4 of this application.

[0341] In one embodiment, the second receiver B02 comprises at least the first four of the following: antenna 420, receiving device 418, multi-antenna receiving processor 472, receiving processor 470, controller / processor 475, and memory 476, as shown in Figure 4 of this application.

[0342] In one embodiment, the second receiver B02 comprises at least the first three of the following: antenna 420, receiving device 418, multi-antenna receiving processor 472, receiving processor 470, controller / processor 475, and memory 476, as shown in Figure 4 of this application.

[0343] In one embodiment, the second receiver B02 comprises at least the first two of the following: antenna 420, receiving device 418, multi-antenna receiving processor 472, receiving processor 470, controller / processor 475, and memory 476, as shown in Figure 4 of this application.

[0344] In one embodiment, a second transmitter B01 transmits a first RRC signaling and a first information block, the symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block, and a second receiver B02 receives a first random access preamble at each of a plurality of PRACH opportunities, all of the plurality of PRACH opportunities occupy only symbols of the same symbol type from a variety of symbol types in the time domain, the variety of symbol types include at least the first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission.

[0345] In one embodiment, at least one symbol of a first symbol type is indicated as a downlink symbol by first RRC signaling and is configured by first information block to be available for uplink transmission.

[0346] In one embodiment, the various symbol types further include a second symbol type, where at least one symbol of the second symbol type is indicated as an uplink symbol by the first RRC signaling, and the symbol indicated as an uplink symbol by the first RRC signaling is not a symbol of the first symbol type.

[0347] In one embodiment, the first RRC signaling is tdd-UL-DL-ConfigurationCommon.

[0348] In one embodiment, all of the multiple PRACH opportunities occupy only symbols of the first symbol type in the time domain.

[0349] In one embodiment, the second transmitter B01 transmits a second information block, which is used to constitute a first PRACH opportunity group, and all of the multiple PRACH opportunities belong to the first PRACH opportunity group.

[0350] In one embodiment, both a first type of PRACH opportunity and a second type of PRACH opportunity are associated with a first SS / PBCH block index, and each of the first type of PRACH opportunity and the second type of PRACH opportunity occupies symbols of different symbol types from among various symbol types, and the first type of PRACH opportunity and the second type of PRACH opportunity are configured to form a plurality of PRACH opportunity groups, and each of the plurality of PRACH opportunity groups is one or more first types The first PRACH opportunity group includes only one of several PRACH opportunity groups, or includes only one or more second-type PRACH opportunities, where the first PRACH opportunity group is one of several PRACH opportunity groups.

[0351] Those skilled in the art will understand that all or some of the steps in the above method can be completed by programmatically instructing the associated hardware, and that the program can be stored in a computer-readable storage medium such as read-only memory, a hard disk, or an optical disc. Optionally, all or some of the steps in the above embodiments can also be carried out using one or more integrated circuits. Thus, each module unit in the above embodiments can be implemented in the form of hardware or in the form of a software functional module. This application is not limited to any particular form of software-hardware combination. Examples of first node devices in this application include, but are not limited to, mobile phones, tablet computers, notebook computers, network access cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircraft, airplanes, drones, remote-controlled aircraft, and other wireless communication devices. Examples of second node devices in this application include, but are not limited to, mobile phones, tablet computers, notebook computers, network access cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircraft, airplanes, drones, remote-controlled aircraft, and other wireless communication devices. User equipment or UE or terminal in this application includes, but is not limited to, mobile phones, tablet computers, laptop computers, network access cards, low-power devices, eMTC devices, NB-IoT devices, vehicle-mounted communication devices, aircraft, airplanes, drones, remote-controlled airplanes, and other wireless communication devices. Base station devices or base station or network-side devices in this application include, but is not limited to, macrocellular base stations, microcell base stations, femtocells, relay base stations, eNBs, gNBs, transmit / receive point TRPs, GNSS, relay satellites, satellite base stations, aerial base stations, test devices, test equipment, test instruments, and other devices.

[0352] Those skilled in the art will understand that the present invention can be implemented in other specific forms without departing from its core or fundamental features. Therefore, the embodiments disclosed herein should be considered explanatory and not restrictive. The scope of the invention is determined not by the foregoing description but by the appended claims, and all modifications within their equivalent meaning and scope are deemed to be included therein.

Claims

1. A first node used for wireless communication, A first receiver that receives a first RRC signaling and a first information block, wherein the symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block, A first transmitter that transmits a first random access preamble in each of multiple PRACH opportunities, Equipped with, All of the aforementioned PRACH opportunities occupy only symbols of the same symbol type from among various symbol types in the time domain, and the various symbol types include at least a first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission. The first node.

2. The first node according to claim 1, wherein at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling and is configured by the first information block to be available for uplink transmission.

3. The various symbol types further include a second symbol type, wherein at least one symbol of the second symbol type is indicated as an uplink symbol by the first RRC signaling, and the symbol indicated as the uplink symbol by the first RRC signaling is not a symbol of the first symbol type, the first node according to claim 1 or 2.

4. The first RRC signaling comprises a tdd-UL-DL-ConfigurationCommon, the first node according to any one of claims 1 to 3.

5. The first node according to any one of claims 1 to 4, wherein all of the plurality of PRACH opportunities occupy only symbols of the first symbol type in the time domain.

6. The first receiver that receives the second information block Equipped with, The second information block is used to constitute a first PRACH opportunity group, and all of the PRACH opportunities belong to the first PRACH opportunity group. The first node according to any one of claims 1 to 5.

7. The first node according to claim 6, wherein both a first type of PRACH opportunity and a second type of PRACH opportunity are associated with a first SS / PBCH block index, the first type of PRACH opportunity and the second type of PRACH opportunity each occupy symbols of different symbol types from the various symbol types, the first type of PRACH opportunity and the second type of PRACH opportunity are configured to form a plurality of PRACH opportunity groups, each of the plurality of PRACH opportunity groups containing only one or more first type PRACH opportunities or only one or more second type PRACH opportunities, and the first PRACH opportunity group is one of the plurality of PRACH opportunity groups.

8. A second node used for wireless communication, A second transmitter that transmits a first RRC signaling and a first information block, wherein the symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block, A second receiver that receives a first random access preamble in each of multiple PRACH opportunities, Equipped with, All of the aforementioned PRACH opportunities occupy only symbols of the same symbol type from among various symbol types in the time domain, and the various symbol types include at least a first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission. The second node.

9. The second node according to claim 8, wherein at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling and is configured by the first information block to be available for uplink transmission.

10. The various symbol types further include a second symbol type, wherein at least one symbol of the second symbol type is indicated as an uplink symbol by the first RRC signaling, and the symbol indicated as the uplink symbol by the first RRC signaling is not a symbol of the first symbol type, as per claim 8 or 9.

11. The first RRC signaling comprises a tdd-UL-DL-ConfigurationCommon, the second node according to any one of claims 8 to 10.

12. The second node according to any one of claims 8 to 11, wherein all of the plurality of PRACH opportunities occupy only symbols of the first symbol type in the time domain.

13. The second transmitter that transmits the second information block Equipped with, The second information block is used to constitute a first PRACH opportunity group, and all of the PRACH opportunities belong to the first PRACH opportunity group. The second node according to any one of claims 8 to 12.

14. The second node according to claim 13, wherein both a first type of PRACH opportunity and a second type of PRACH opportunity are associated with a first SS / PBCH block index, the first type of PRACH opportunity and the second type of PRACH opportunity each occupy symbols of different symbol types from the various symbol types, the first type of PRACH opportunity and the second type of PRACH opportunity are configured to form a plurality of PRACH opportunity groups, each of the plurality of PRACH opportunity groups containing only one or more first type PRACH opportunities or only one or more second type PRACH opportunities, and the first PRACH opportunity group is one of the plurality of PRACH opportunity groups.

15. A method used in a first node for wireless communication, Receiving a first RRC signaling and a first information block, wherein the symbol type corresponding to at least one symbol other than the symbol indicated as an uplink symbol by the first RRC signaling depends on the first information block. to receive, Sending a first random access preamble in each of multiple PRACH opportunities, Includes, All of the aforementioned PRACH opportunities occupy only symbols of the same symbol type from among various symbol types in the time domain, and the various symbol types include at least a first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission. The method used in the first node.

16. The method used in a first node according to claim 15, wherein at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling and is configured by the first information block to be available for uplink transmission.

17. The method used in a first node according to claim 15 or 16, wherein the various symbol types further include a second symbol type, where at least one symbol of the second symbol type is indicated as an uplink symbol by the first RRC signaling, and the symbol indicated as the uplink symbol by the first RRC signaling is not a symbol of the first symbol type.

18. The first RRC signaling is a method used in the first node according to any one of claims 15 to 17, comprising a tdd-UL-DL-ConfigurationCommon.

19. A method used in a first node according to any one of claims 15 to 18, wherein all of the plurality of PRACH opportunities occupy only symbols of the first symbol type in the time domain.

20. Receiving the second information block Includes, A method used in a first node according to any one of claims 15 to 19, wherein the second information block is used to constitute a first PRACH opportunity group, and all of the plurality of PRACH opportunities belong to the first PRACH opportunity group.

21. A method used in a first node according to claim 20, wherein both a first type of PRACH opportunity and a second type of PRACH opportunity are associated with a first SS / PBCH block index, the first type of PRACH opportunity and the second type of PRACH opportunity each occupy symbols of different symbol types from the various symbol types, the first type of PRACH opportunity and the second type of PRACH opportunity are configured to form a plurality of PRACH opportunity groups, each of the plurality of PRACH opportunity groups containing only one or more first type PRACH opportunities or only one or more second type PRACH opportunities, and the first PRACH opportunity group is one of the plurality of PRACH opportunity groups.

22. A method used in a second node for wireless communication, Transmitting a first RRC signaling and a first information block, wherein the first RRC signaling transmits a number of symbols other than the symbols indicated as uplink symbols. At least one symbol type corresponds to the first information block, and transmission is performed. Receiving a first random access preamble in each of multiple PRACH opportunities, Includes, A method used at a second node, wherein all of the aforementioned PRACH opportunities occupy only symbols of the same symbol type from among various symbol types in the time domain, the various symbol types including at least a first symbol type, and at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling but can be used for uplink transmission.

23. The method used in a second node according to claim 22, wherein at least one symbol of the first symbol type is indicated as a downlink symbol by the first RRC signaling and is configured by the first information block to be available for uplink transmission.

24. The method used in a second node according to claim 22 or 23, wherein the various symbol types further include a second symbol type, where at least one symbol of the second symbol type is indicated as an uplink symbol by the first RRC signaling, and the symbol indicated as the uplink symbol by the first RRC signaling is not a symbol of the first symbol type.

25. The first RRC signaling is a method used in a second node according to any one of claims 22 to 24, comprising a tdd-UL-DL-ConfigurationCommon.

26. A method used in a second node according to any one of claims 22 to 25, wherein all of the plurality of PRACH opportunities occupy only symbols of the first symbol type in the time domain.

27. Send the second information block. Includes, The second information block is used to constitute a first PRACH opportunity group, and all of the PRACH opportunities belong to the first PRACH opportunity group. A method used in a second node according to any one of claims 22 to 26.

28. A method used in a second node according to claim 27, wherein both a first type of PRACH opportunity and a second type of PRACH opportunity are associated with a first SS / PBCH block index, the first type of PRACH opportunity and the second type of PRACH opportunity each occupy symbols of different symbol types from the various symbol types, the first type of PRACH opportunity and the second type of PRACH opportunity are configured to form a plurality of PRACH opportunity groups, each of the plurality of PRACH opportunity groups containing only one or more first type PRACH opportunities or only one or more second type PRACH opportunities, and the first PRACH opportunity group is one of the plurality of PRACH opportunity groups.

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