A method and apparatus in a node for wireless communication uplink timing

Abstract

A method and apparatus in a node for uplink timing in wireless communication. The node receives a first signaling, the first signaling initiates a random access procedure; then transmits a first signal; the random access procedure initiated by the first signaling comprises the first signal; whether the first signaling comprises a field indicating a transmission power value of the first signal depends on whether a first loss offset value is configured. The method optimizes uplink synchronization in wireless communication, and realizes uplink synchronization in uplink-downlink asymmetric scenarios on the basis of reducing the improvement of existing standards, thereby improving overall performance.

Description

A method and device in a node used for uplink timing of wireless communication

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on April 6, 2024, with application number 202410406336.1 and application name “A method and device in a node used for uplink timing of wireless communication”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to a signal transmission method and apparatus in a wireless communication system, and in particular to an uplink timing method and apparatus. Background Art

[0003] Multi-antenna technology is a key technology in 3GPP (3rd Generation Partnership Project) LTE (Long-Term Evolution) and NR (New Radio) systems. It achieves additional spatial degrees of freedom by deploying multiple antennas at communication nodes, such as base stations or user equipment (UE). Multiple antennas use beamforming to form beams pointed in a specific direction, improving communication quality. When multiple antennas belong to multiple Transmitter Receiver Points (TRPs) / panels, additional diversity gain can be achieved by leveraging the spatial differences between different TRPs / panels. Deploying heterogeneous networks, where a UE receives downlink (DL) transmissions from a gNB but sends uplink (UL) transmissions to a gNB or non-co-located TRP / panel, is a key enhancement for improving uplink throughput. Furthermore, the TRP / panel receiving the UL transmissions can reduce or even disable DL transmissions to reduce energy consumption.

[0004] In December 2023, the RAN (Radio Access Network) #102 plenary meeting passed the WI (Work Item) of NR MIMO Phase 5. The RAN1 working group will at least enhance UL power control (PC) in the Rel-19 stage to support this UL / DL asymmetric deployment scenario; this includes configuring path loss offset for the UE to facilitate accurate calculation of the path loss associated with the UE and the TRP / panel; and supporting two closed-loop PC adjustment states of two SRS (Sounding Resource Signal) for gNB DL CSI (Channel State Information) acquisition and UL multi-TRP (multi-TRP) transmission. Summary of the Invention

[0005] In existing standards, a base station triggers a UE to send a PRACH (Physical Random Access Channel) by sending a PDCCH (Physical Downlink Control Channel) Order, to help the base station determine a TA (Timing Advance) and thus maintain uplink timing.

[0006] In UL / DL asymmetric scenarios, UE uplink transmission may correspond to different beams / TRPs / panels, and different beams / TRPs / panels may correspond to different TAs. How to support different TAs in a serving cell and initiate PRACH transmission for TA estimation corresponding to different uplink receiving nodes is a problem that needs to be solved.

[0007] In response to the above problems, the present application discloses a solution. It should be noted that, in the description of the above problem, the NR (New Radio) system is used as an example. The present application is also applicable to scenarios such as the future 6G system, and achieves technical effects similar to the NR system. Furthermore, although the original intention of the present application is for UL / DL asymmetric, cellular network, uplink transmission, multi-beam / TRP / panel scenarios, the present application can also be applied to other non-UL / DL asymmetric scenarios. Furthermore, for different scenarios (such as other non-UL / DL asymmetric scenarios, including but not limited to sidelink transmission, downlink transmission, single beam / TRP / panel, RIS (Reconfigurable Intelligent Surface), Vehicle to Everything (V2X), NCR (Network Control Repeater) capacity enhancement system, short-range communication system, NTN (Non Terrestrial Network), IoT (Internet of Things), URLLC (Ultra Reliable Low Latency The use of a unified design for robust communication (ultra-robust low-latency communication) networks, etc., also helps reduce hardware complexity and costs. Unless there is a conflict, the embodiments and features of any node in this application can be applied to any other node. Unless there is a conflict, the embodiments and features of the embodiments in this application can be combined in any way.

[0008] In particular, for the interpretation of terminology, nouns, functions, and variables in this application (unless otherwise specified), reference may be made to the definitions in the TS38 series and TS37 series of the technical specifications (TS) of the 3GPP (the 3rd Generation Partnership Project). If necessary, reference may be made to TS38.211, TS38.212, TS38.213, TS38.214, TS38.215, TS38.300, TS38.304, TS38.305, TS38.321, TS38.331, TS37.355, and TS38.423 in the 3GPP technical standards to assist in understanding this application.

[0009] As an example, the interpretation of the terms in this application refers to the definitions of the 3GPP specification protocol TS38 series.

[0010] As an example, the interpretation of the terms in this application refers to the definitions of the TS37 series of specification protocols of 3GPP.

[0011] As an example, the interpretation of the terms in this application refers to the definitions of the TS40 series of specification protocols of 3GPP.

[0012] As an example, the interpretation of the terms in this application refers to the definitions in the TS39 series of specification protocols of 3GPP.

[0013] As an embodiment, the interpretation of the terms in this application refers to the definitions in the Rel-17 version of the 3GPP specification protocol.

[0014] As an example, the interpretation of the terms in this application refers to the definitions in the Rel-18 version of the 3GPP specification protocol.

[0015] As an example, the interpretation of the terms in this application refers to the definitions in the Rel-19 version of the 3GPP specification protocol.

[0016] As an example, the interpretation of the terms in this application refers to the definitions in the Rel-20 version of the 3GPP specification protocol.

[0017] The present application discloses a method in a first node for uplink synchronization of wireless communication, which includes:

[0018] receiving a first signaling, where the first signaling initiates a random access procedure;

[0019] sending a first signal;

[0020] The random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal depends on whether a first path loss offset value is configured.

[0021] As an embodiment, the problems to be solved by this application include: how to determine the TA for the base station and UL-TRP respectively in a scenario where a service cell supports both the base station and UL-TRP to receive uplink transmissions.

[0022] As an embodiment, the problem to be solved by the present application includes: uplink timing of the first node.

[0023] As an embodiment, the problem to be solved by the present application includes: using PDCCH Order to trigger PRACH transmission for different uplink reception points while reducing modifications to the existing system.

[0024] As an embodiment, the problems to be solved by this application include: the UE can send uplinks to the base station and to a remote TRP specifically used to receive uplinks, and then how to determine the two different uplink timings corresponding to the two links.

[0025] According to one aspect of the present application, the above method is characterized in that, when the first path loss offset value is configured, the first signaling includes the domain indicating the transmit power value of the first signal; when the first path loss offset value is not configured, the first signaling does not include the domain indicating the transmit power value of the first signal.

[0026] As an embodiment, the characteristics of the above method include: determining the composition and interpretation of the PDCCH Order field based on whether the first path loss offset value is configured, so as to save signaling overhead and improve transmission efficiency.

[0027] According to one aspect of the present application, the above method is characterized in that the first path loss offset value is configured, the first signaling includes a first field, and the first field included in the first signaling indicates whether the transmission power value of the first signal depends on the first path loss offset.

[0028] As an embodiment, the characteristics of the above method include: when the first domain exists, further determining the transmission power value of the first signal based on the dynamic indication of the first domain, thereby being able to simultaneously support PRACH transmission for the base station and PRACH transmission for UL-TRP to improve flexibility.

[0029] According to one aspect of the present application, the above method is characterized in that the first signal is associated with a downlink signal; the transmit power value of the first signal is equal to the smaller value of the first maximum power value and the first power value; when the first field included in the first signaling indicates that the transmit power value of the first signal depends on the first path loss offset, the first power value is equal to the sum of the target power value and the target path loss value, and the target path loss value includes the path loss obtained for the downlink signal and the first path loss offset; when the first field included in the first signaling indicates that the transmit power value of the first signal does not depend on the first path loss offset, the first power value is equal to the sum of the target power value and the target path loss value, and the target path loss value is equal to the path loss obtained for the downlink signal.

[0030] As an embodiment, the characteristics of the above method include: introducing the first path loss offset value to achieve PRACH transmission for multiple nodes, thereby adapting to UL / DL asymmetric deployment scenarios.

[0031] According to one aspect of the present application, the above method is characterized in that the bits occupied by the first field included in the first signaling are reserved bits.

[0032] As an embodiment, the characteristics of the above method include: ensuring consistency with the payload of the existing DCI (Downlink Control Information) format, reducing the complexity of system implementation, and improving compatibility.

[0033] According to one aspect of the present application, the above method is characterized in that the first field included in the first signaling includes only 1 bit, and the first field indicates whether the first path loss offset is enabled; when the first path loss offset is enabled, the transmit power value of the first signal depends on the first path loss offset; when the first path loss offset is not enabled, the transmit power value of the first signal does not depend on the first path loss offset.

[0034] According to one aspect of the present application, the above method is characterized in that the first path loss offset is associated with a first TCI state, the first TCI state is associated with at least one SRS resource, and the first signal and the SRS resource are quasi-co-located.

[0035] As an embodiment, the characteristics of the above method include: by associating the first path loss offset with the first TCI state, an integrated design of uplink power control, beamforming, and TA estimation is achieved, thereby achieving system unification.

[0036] According to one aspect of the present application, the above method is characterized in that the first node is a user equipment.

[0037] According to one aspect of the present application, the above method is characterized in that the first node is a relay node.

[0038] The present application discloses a method in a second node for uplink synchronization of wireless communication, which includes:

[0039] Sending a first signaling, where the first signaling initiates a random access procedure;

[0040] receiving a first signal;

[0041] The random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal depends on whether a first path loss offset value is configured.

[0042] According to one aspect of the present application, when the first path loss offset value is configured, the first signaling includes the domain indicating the transmit power value of the first signal; when the first path loss offset value is not configured, the first signaling does not include the domain indicating the transmit power value of the first signal.

[0043] According to one aspect of the present application, the above method is characterized in that the first path loss offset value is configured, the first signaling includes a first field, and the first field included in the first signaling indicates whether the transmission power value of the first signal depends on the first path loss offset.

[0044] According to one aspect of the present application, the above method is characterized in that the first signal is associated with a downlink signal; the transmit power value of the first signal is equal to the smaller value of the first maximum power value and the first power value; when the first field included in the first signaling indicates that the transmit power value of the first signal depends on the first path loss offset, the first power value is equal to the sum of the target power value and the target path loss value, and the target path loss value includes the path loss obtained for the downlink signal and the first path loss offset; when the first field included in the first signaling indicates that the transmit power value of the first signal does not depend on the first path loss offset, the first power value is equal to the sum of the target power value and the target path loss value, and the target path loss value is equal to the path loss obtained for the downlink signal.

[0045] According to one aspect of the present application, the above method is characterized in that the bits occupied by the first field included in the first signaling are reserved bits.

[0046] According to one aspect of the present application, the above method is characterized in that the first field included in the first signaling includes only 1 bit, and the first field indicates whether the first path loss offset is enabled; when the first path loss offset is enabled, the transmit power value of the first signal depends on the first path loss offset; when the first path loss offset is not enabled, the transmit power value of the first signal does not depend on the first path loss offset.

[0047] According to one aspect of the present application, the above method is characterized in that the first path loss offset is associated with a first TCI state, the first TCI state is associated with at least one SRS resource, and the first signal and the SRS resource are quasi-co-located.

[0048] According to one aspect of the present application, the above method is characterized in that the second node is a base station.

[0049] According to one aspect of the present application, the above method is characterized in that the second node is a user equipment.

[0050] According to one aspect of the present application, the above method is characterized in that the second node is a relay node.

[0051] The present application discloses a device for a first node used for uplink synchronization of wireless communication, comprising:

[0052] A first receiver receives a first signaling, wherein the first signaling initiates a random access process;

[0053] A first transmitter sends a first signal;

[0054] The random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal depends on whether a first path loss offset value is configured.

[0055] The present application discloses a device for a second node used for uplink synchronization of wireless communication, comprising:

[0056] A second transmitter sends a first signaling, where the first signaling initiates a random access process;

[0057] a second receiver, receiving the first signal;

[0058] The random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal depends on whether a first path loss offset value is configured.

[0059] As an embodiment, compared with the traditional solution, the present application has the following advantages but not limited to:

[0060] -This application supports the transmission of PRACH to different uplink reception points, thereby estimating different TAs and maintaining different uplink synchronization;

[0061] -Uplink multi-beam / TRP / panel transmission with different timing advance values ​​improves uplink transmission performance;

[0062] - This application maintains the PDCCH format unchanged, and the presence of the first field is related to the configuration of the first path loss offset value, thereby simplifying the design and reducing signaling overhead;

[0063] - This application supports dynamic indication of PRACH switching between two uplink reception points, thereby improving flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0065] FIG1 shows a flow chart of first node transmission according to an embodiment of the present application;

[0066] FIG2 shows a schematic diagram of a network architecture according to an embodiment of the present application;

[0067] FIG3 is a schematic diagram showing an embodiment of a radio protocol architecture of a user plane and a control plane according to an embodiment of the present application;

[0068] FIG4 shows a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application;

[0069] FIG5 shows a flow chart of transmission between a first node and a second node according to an embodiment of the present application;

[0070] FIG6 shows a schematic diagram of an embodiment according to an application scenario of the present application;

[0071] FIG7 shows a structural block diagram of a processing device used in a first node according to an embodiment of the present application;

[0072] FIG8 shows a structural block diagram of a processing device used in a second node according to an embodiment of the present application. DETAILED DESCRIPTION

[0073] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other in any way.

[0074] Example 1

[0075] Example 1 illustrates a flowchart of a first node transmission according to an embodiment of the present application, as shown in FIG1 . In FIG1 , each box represents a step. In particular, the order of the steps in the boxes does not represent a specific temporal relationship between the steps.

[0076] In step 101 , the first node receives first signaling, which initiates a random access process; and in step 102 , sends a first signal.

[0077] In embodiment 1, the random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal depends on whether a first path loss offset value is configured.

[0078] As an embodiment, the first signaling includes DCI.

[0079] As an embodiment, the physical layer channel occupied by the first signaling includes PDCCH.

[0080] As an embodiment, the first signaling is a PDCCH Order.

[0081] As an embodiment, the first signaling initiates a random access process.

[0082] As an embodiment, the CRC (Cyclic redundancy check) included in the first signaling is scrambled by C (Cell)-RNTI (Radio Network Temporary Identifier).

[0083] As an embodiment, the FDRA (Frequency domain resource assignment) field included in the first signaling is all 1s.

[0084] As an embodiment, the first signal includes PRACH.

[0085] As an embodiment, the first signal includes a Preamble.

[0086] As an embodiment, the first signal includes Msg1.

[0087] As an embodiment, the first signal includes MsgA.

[0088] As an embodiment, the transmission of the first signal is a response to the reception of the first signaling.

[0089] As an embodiment, the first path loss offset value is configured, and the first signaling includes a domain indicating the transmit power value of the first signal; or, the first path loss offset value is not configured, and the first signaling does not include a domain indicating the transmit power value of the first signal.

[0090] As an embodiment, the meaning that the first path loss offset value is configured includes: the first path loss offset value is configured by the first node.

[0091] As an embodiment, the meaning that the first path loss offset value is configured includes: the first path loss offset value is indicated to the first node.

[0092] As an embodiment, the meaning that the first path loss offset value is configured includes: the first path loss offset value is configured by the second node in this application.

[0093] As an embodiment, the meaning that the first path loss offset value is configured includes: the first path loss offset value is indicated by the second node.

[0094] As an embodiment, the SSB described in this application refers to: Synchronization Signal Block.

[0095] As an embodiment, the SSB described in this application refers to: SS (Synchronization Signal) / PBCH (Physical Broadcast Channel) block, synchronization signal / physical broadcast channel block.

[0096] Typically, the PBCH, PSS (Primary Synchronization Signal) and SSS (Secondary Synchronization Signal) are received in consecutive symbols and form an SS / PBCH block.

[0097] As an embodiment, the first path loss offset value is associated with an SSB.

[0098] As an embodiment, the first path loss offset value is configured for an SSB.

[0099] As an embodiment, the first path loss offset value is associated with an SSB Index.

[0100] As an embodiment, the first path loss offset value is configured to an SSB Index.

[0101] As an embodiment, the first path loss offset value is associated with a CSI-RS (Channel State Information-Reference Signal).

[0102] As an embodiment, the first path loss offset value is configured for CSI-RS.

[0103] As an embodiment, the first path loss offset value is associated with a CSI-RS resource.

[0104] As an embodiment, the first path loss offset value is configured for a CSI-RS resource.

[0105] As an embodiment, the first path loss offset value is associated with an NZP-CSI-RS-Resource.

[0106] As an embodiment, the first path loss offset value is configured for an NZP-CSI-RS-Resource.

[0107] As an embodiment, the first path loss offset value is associated with an NZP-CSI-RS-ResourceId.

[0108] As an embodiment, the first path loss offset value is configured to an NZP-CSI-RS-ResourceId.

[0109] As an embodiment, the first path loss offset value is associated with a TCI (Transmission configuration indicator) state.

[0110] As an embodiment, the first path loss offset value is configured for a TCI state.

[0111] As a sub-embodiment of the above two embodiments, the TCI state is an uplink TCI state.

[0112] As a sub-embodiment of the above two embodiments, the TCI state is a downlink TCI state.

[0113] As an embodiment, the first path loss offset value is associated with a quasi-co-location-Info.

[0114] As an embodiment, the first path loss offset value is configured to a quasi co-location-Info.

[0115] As an embodiment, the unit of the first path loss offset value is dB.

[0116] As an embodiment, the DCI Format corresponding to the first signaling is DCI Format 1_0.

[0117] Example 2

[0118] Example 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in Figure 2.

[0119] FIG2 illustrates a network architecture 200. Network architecture 200 is the network architecture for LTE (Long-Term Evolution), LTE-A (Long-Term Evolution Advanced), 5G systems, 5G-Advanced, and future 6G systems. The network architecture for LTE, LTE-A, 5G systems, 5G-Advanced, and future 6G systems is referred to as EPS (Evolved Packet System). The 5G NR or LTE network architecture may be referred to as 5GS (5G System) / EPS or some other suitable terminology; the 6G network architecture may be referred to as 6GS (6G System) / EPS or some other suitable terminology. Network architecture 200 may include one or more UEs 201, a Next Generation Radio Access Network (RAN) 202, a core network 210, a Home Subscriber Server (HSS) / Unified Data Management (UDM) 220, and Internet services 230. The network architecture 200 can interconnect with other access networks, but for simplicity these entities / interfaces are not shown. As shown in FIG2 , the network architecture 200 provides packet-switched services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit-switched services. The RAN 202 includes a Node B 203 and other nodes 204. Node 203 provides user and control plane protocol termination towards the UE 201. Node 203 can be connected to the other nodes 204 via an Xn interface (e.g., backhaul). Node 203 may also be referred to as a base station, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a Basic Service Set (BSS), an Extended Service Set (ESS), a Transmitter Receiver Point (TRP), or some other appropriate terminology. Node 203 provides an access point to the core network 210 for UE 201; the core network 210 is 5GC (5G Core Network) / EPC (Evolved Packet Core), or the core network 210 is 6GC.Examples of UE 201 include a cellular phone, a smartphone, a Session Initiation Protocol (SIP) phone, a laptop computer, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a drone, an aircraft, a narrowband physical network device, a machine type communication device, a land vehicle, an automobile, a wearable device, or any other similarly functional device. Those skilled in the art may also refer to UE 201 as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term. Node 203 is connected to core network 210 via an S1 / NG interface. The core network 210 includes the MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MMEs / AMFs / SMFs 214, the S-GW (Service Gateway) / UPF (User Plane Function) 212, and the P-GW (Packet Data Network Gateway) / UPF 213. The MME / AMF / SMF 211 is the control node that handles signaling between the UE 201 and the 5G-CN / EPC 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through the S-GW / UPF 212, which is itself connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF 213 is connected to the Internet service 230. The Internet service 230 includes operator-specific Internet protocol services, which may include the Internet, intranet, IMS (IP Multimedia Subsystem), and packet switching services.

[0120] As an embodiment, the first node in the present application includes the UE 201.

[0121] As an embodiment, the second node in this application includes the node 203.

[0122] As an embodiment, the node 203 is a macro cell base station.

[0123] As an embodiment, the node 203 is a micro cell base station.

[0124] As an embodiment, the node 203 is a pico cell base station.

[0125] As an embodiment, the node 203 is a home base station (Femtocell).

[0126] As an embodiment, the node 203 is a base station device that supports a large delay difference.

[0127] As an embodiment, the node 203 is a flying platform device.

[0128] As an embodiment, the node 203 is a satellite device.

[0129] As an embodiment, the node 203 is a test device (eg, a transceiver that simulates some functions of a base station, a signaling tester).

[0130] As an embodiment, the UE 201 includes a mobile phone.

[0131] As an embodiment, the UE 201 is a vehicle including a car.

[0132] As an embodiment, the wireless link from the UE 201 to the node 203 is an uplink, and the uplink is used to perform uplink transmission.

[0133] As an embodiment, the wireless link from the node 203 to the UE 201 is a downlink, and the downlink is used to perform downlink transmission.

[0134] As an embodiment, the wireless link between the node 203 and the UE 201 includes a cellular network link.

[0135] As an embodiment, the node 203 and the UE 201 are connected via a Uu air interface.

[0136] As an embodiment, the sender of the first signaling includes the node 203.

[0137] As an embodiment, the recipient of the first signaling includes the UE 201.

[0138] As an embodiment, the receiver of the first signal includes the node 203.

[0139] As an embodiment, the sender of the first signal includes the UE 201.

[0140] As an embodiment, the UE 201 supports UL / DL asymmetric.

[0141] As an embodiment, the UE 201 supports multi-panel / TRP transmission based on multi-TA.

[0142] As an embodiment, the UE 201 supports configuring two CORESET Pools.

[0143] As an embodiment, the UE 201 supports a 5G system.

[0144] As an embodiment, the node 203 supports a 5G system.

[0145] As an embodiment, the UE 201 supports at least the 6G system.

[0146] As an embodiment, the node 203 supports at least a 6G system.

[0147] Example 3

[0148] Embodiment 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application, as shown in FIG3 .

[0149] FIG3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300. FIG3 illustrates the radio protocol architecture for a first communication node device (a UE or RSU (Road Side Unit) in a V2X (Vehicle to Everything) network, a vehicle-mounted device, or a vehicle-mounted communication module) and a second node device (a gNB, a UE or RSU in a V2X network, a vehicle-mounted device, or a vehicle-mounted communication module), or the control plane 300 between two UEs using three layers: Layer 1 (L1), Layer 2 (L2), and Layer 3 (L3). L1 is the lowest layer and implements various PHY (Physical Layer) signal processing functions. L1 will be referred to herein as PHY 301. L2 305, located above PHY 301, is responsible for the link between the first and second node devices, or between two UEs, through PHY 301. L2 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second 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 supports handover of the first communication node device between the second communication node devices. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ (Hybrid Automatic Repeat reQuest). The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in L3 in the control plane 300 is responsible for obtaining radio resources (ie, radio bearers) and configuring lower layers using RRC signaling between the second communication node device and the first communication node device.The radio protocol architecture of the user plane 350 includes Layer 1 (L1) and Layer 2 (L2). The radio protocol architecture for the first and second communication node devices in the user plane 350 is substantially identical to the corresponding layers and sublayers in the control plane 300, including the physical layer 351, the PDCP sublayer 354 in Layer 2 355, the RLC sublayer 353 in Layer 2 355, and the MAC sublayer 352 in Layer 2 355. However, the PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. Layer 2 355 in the user plane 350 also includes the SDAP (Service Data Adaptation Protocol) sublayer 356, which is responsible for mapping QoS (Quality of Service) flows to data radio bearers (DRBs) to support service diversity. Although not shown, the first communication node device may have several upper layers above L2 355, including a network layer (e.g., an IP (Internet Protocol) layer) terminated at the P-GW on the network side and an application layer terminated at the other end of the connection (e.g., a remote UE, a server, etc.).

[0150] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the first node in this application.

[0151] As an embodiment, the wireless protocol architecture in FIG3 is applicable to the second node in this application.

[0152] As an embodiment, the first signaling is generated by the PHY 301 or PHY 351.

[0153] As an embodiment, the first signaling is generated by the MAC 302 or MAC 352.

[0154] As an embodiment, the first signaling is generated in the RRC 306.

[0155] As an embodiment, the first signal is generated by the PHY 301 or PHY 351 .

[0156] As an embodiment, the first signal is generated by the MAC 302 or MAC 352.

[0157] Example 4

[0158] Embodiment 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application, as shown in Figure 4. Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0159] The first communications device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 , and an antenna 420 .

[0160] The second communication device 450 includes a controller / processor 459 , a memory 460 , a data source 467 , a transmit processor 468 , a receive processor 456 , a multi-antenna transmit processor 457 , a multi-antenna receive processor 458 , a transmitter / receiver 454 and an antenna 452 .

[0161] In transmission from the first communications device 410 to the second communications device 450, at the first communications device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements L2 functionality. In the DL, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and allocation of radio resources to the second communications device 450 based on various priority metrics. The controller / processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the second communications device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 (i.e., physical layer). The transmit processor 416 performs coding and interleaving to facilitate forward error correction (FEC) at the second communications device 450, as well as mapping of signal constellations based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-ary phase shift keying (M-PSK), and M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding on the coded and modulated symbols, including codebook-based and non-codebook-based precoding and beamforming, to generate one or more parallel streams. The transmit processor 416 then maps each parallel stream to a subcarrier, multiplexes the modulated symbols with a reference signal (e.g., a pilot) in the time and / or frequency domain, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multi-carrier symbol stream. The multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multi-carrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, which is then provided to a different antenna 420.

[0162] During transmission from the first communication device 410 to the second communication device 450, at the second communication device 450, each receiver 454 receives a signal via its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream, which is provided to the receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various L1 signal processing functions. The multi-antenna receive processor 458 performs receive analog precoding / beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. The receive processor 456 converts the baseband multi-carrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain using a Fast Fourier Transform (FFT). In the frequency domain, the physical layer data signal and reference signal are demultiplexed by the receive processor 456, where the reference signal is used for channel estimation. The data signal is recovered in the multi-antenna receive processor 458 after multi-antenna detection to any parallel stream destined for the second communication device 450. The symbols on each parallel stream are demodulated and recovered in the receive processor 456, and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements L2 functionality. 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 the DL, the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above L2. Various control signals may also be provided to L3 for L3 processing. The controller / processor 459 is also responsible for error detection using acknowledgment (ACK) and / or negative acknowledgment (NACK) protocols to support HARQ operations.

[0163] During transmission from the second communications device 450 to the first communications device 410, at the second communications device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above L2. Similar to the transmit functionality at the first communications device 410 described in the DL, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the first communications device 410, implementing L2 functionality for both the user plane and the control plane. The controller / processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the first communications device 410. The transmit processor 468 performs modulation mapping and channel coding, while the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming. The transmit processor 468 then modulates the resulting parallel streams into multi-carrier / single-carrier symbol streams. After analog precoding and beamforming operations in the multi-antenna transmit processor 457, these streams are provided to different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a RF symbol stream before providing it to the antenna 452.

[0164] During transmission from the second communication device 450 to the first communication device 410, the functionality at the first communication device 410 is similar to the reception functionality at the second communication device 450 described for transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives RF signals via its corresponding antenna 420, converts the received RF signals into baseband signals, and provides the baseband signals to the multi-antenna receive processor 472 and the receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement L1 functionality. The controller / processor 475 implements L2 functionality. The controller / processor 475 may be associated with a memory 476 storing program code and data. The memory 476 may be referred to as a computer-readable medium. The controller / processor 475 provides demultiplexing between transmit and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the second communication device 450. The upper layer data packets from the controller / processor 475 may be provided to the core network. The controller / processor 475 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0165] As an embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The second communication device 450 device at least receives first signaling, the first signaling initiating a random access process; transmits a first signal; the random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal and whether a first path loss offset value is configured.

[0166] As an embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates an action when executed by at least one processor, and the action includes: receiving a first signaling, wherein the first signaling initiates a random access process; sending a first signal; the random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain dependency indicating the transmission power value of the first signal and whether a first path loss offset value is configured.

[0167] As an embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The first communication device 410 device at least sends a first signaling, the first signaling initiating a random access procedure; receives a first signal; the random access procedure initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal and whether a first path loss offset value is configured.

[0168] As an embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program, wherein the computer-readable instruction program generates an action when executed by at least one processor, and the action includes: sending a first signaling, wherein the first signaling initiates a random access process; receiving a first signal; the random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain dependency indicating the transmission power value of the first signal and whether a first path loss offset value is configured.

[0169] As an embodiment, the first node in this application includes the second communication device 450.

[0170] As an embodiment, the second node in this application includes the first communication device 410.

[0171] As an embodiment, at least one of {the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller / processor 475, and the memory 476} is used to send the first signaling; and at least one of {the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller / processor 459, the memory 460, and the data source 467} is used to receive the first signaling.

[0172] As an embodiment, at least one of {the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller / processor 459, the memory 460, and the data source 467} is used to send a first signal; and at least one of {the antenna 420, the receiver 418, the receive processor 470, the multi-antenna receive processor 472, the controller / processor 475, and the memory 476} is used to receive a first signal.

[0173] Example 5

[0174] Example 5 illustrates a first flowchart of transmission between a first node and a second node according to an embodiment of the present application. In FIG5 , the first node U1 and the second node N2 communicate via a wireless link. It should be noted that the sequence in this example does not limit the order of signal transmission and implementation in this application.

[0175] For the first node U1, in step S510, the first signaling is received; in step S511, the first signal is sent;

[0176] For the second node N2, a first signaling is sent in step S520; and a first signal is received in step S521.

[0177] In embodiment 5, the random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal depends on whether a first path loss offset value is configured.

[0178] As an embodiment, the first node U1 is the first node in this application.

[0179] As an embodiment, the second node N2 is the second node in this application.

[0180] Typically, when the first path loss offset value is configured, the first signaling includes the field indicating the transmit power value of the first signal; when the first path loss offset value is not configured, the first signaling does not include the field indicating the transmit power value of the first signal.

[0181] As an embodiment, the field indicating the transmission power value of the first signal included in the first signaling occupies 1 bit.

[0182] As an embodiment, the meaning that the first signaling does not include the field indicating the transmit power value of the first signal includes: the field indicating the transmit power value of the first signal is set to a fixed value.

[0183] As a sub-embodiment of this embodiment, the fixed value is 0.

[0184] As a sub-embodiment of this embodiment, the fixed value is 1.

[0185] As an embodiment, the meaning that the first signaling does not include the field indicating the transmit power value of the first signal includes: the field indicating the transmit power value of the first signal is set to a reserved bit.

[0186] As an embodiment, the meaning that the first signaling does not include the field indicating the transmit power value of the first signal includes: the field indicating the transmit power value of the first signal is set as a padding bit.

[0187] Typically, the first path loss offset value is configured, the first signaling includes a first field, and the first field included in the first signaling indicates whether the transmit power value of the first signal depends on the first path loss offset.

[0188] As an embodiment, the first field included in the first signaling includes 1 bit.

[0189] As a sub-embodiment of this embodiment, the value indicated by the first domain included in the first signaling is "1", and the transmission power value of the first signal depends on the first path loss offset; the value indicated by the first domain included in the first signaling is "0", and the transmission power value of the first signal does not depend on the first path loss offset.

[0190] As a sub-embodiment of this embodiment, the value indicated by the first domain included in the first signaling is "0", and the transmission power value of the first signal depends on the first path loss offset; the value indicated by the first domain included in the first signaling is "1", and the transmission power value of the first signal does not depend on the first path loss offset.

[0191] As an embodiment, the first field included in the first signaling is a BOOLEAN.

[0192] As a sub-embodiment of this embodiment, the value indicated by the first field included in the first signaling is "TRUE", and the transmission power value of the first signal depends on the first path loss offset; the value indicated by the first field included in the first signaling is "FALSE", and the transmission power value of the first signal does not depend on the first path loss offset.

[0193] Typically, the first signal is associated with a downlink signal; the transmit power value of the first signal is equal to the smaller value between a first maximum power value and a first power value; when the first field included in the first signaling indicates that the transmit power value of the first signal depends on the first path loss offset, the first power value is equal to the sum of a target power value and a target path loss value, and the target path loss value includes the path loss obtained for the downlink signal and the first path loss offset; when the first field included in the first signaling indicates that the transmit power value of the first signal does not depend on the first path loss offset, the first power value is equal to the sum of the target power value and the target path loss value, and the target path loss value is equal to the path loss obtained for the downlink signal.

[0194] As an embodiment, the downlink signal includes CSI-RS.

[0195] As an embodiment, the downlink signal occupies CSI-RS resources.

[0196] As an embodiment, the downlink signal occupies NZP-CSI-RS resources.

[0197] As an embodiment, the downlink signal corresponds to an NZP-CSI-RS resource identifier.

[0198] As an embodiment, the downlink signal includes SSB.

[0199] As an embodiment, the downlink signal corresponds to the SSB Index.

[0200] As an embodiment, the downlink signal includes a downlink reference signal that is quasi-co-located with the DMRS carried by the first signaling.

[0201] As an embodiment, the first signal being associated with the downlink signal means that the first signal and the downlink signal are quasi-co-located.

[0202] As an embodiment, the first signal being associated with the downlink signal means that the first signal and the downlink signal are quasi-co-located.

[0203] As an embodiment, the meaning that the first signal is associated with the downlink signal includes: the downlink signal corresponds to the referenceSignalPower of the first signal.

[0204] As an embodiment, the first maximum power value is the maximum output power configured by the first node.

[0205] As an embodiment, the first maximum power value is for the carrier f of the serving cell c.

[0206] As an embodiment, the first maximum power value is for transmission opportunity i.

[0207] As an embodiment, the first maximum power value is P CMAX,f,c (i).

[0208] As an embodiment, the target power value is a target receiving power value of the first signal.

[0209] As an embodiment, the target power value is P PRACH,target,f,c .

[0210] As an embodiment, the path loss obtained for the downlink signal is PL b,f,c .

[0211] As an embodiment, the path loss obtained for the downlink signal is obtained by the first node subtracting the RSRP of the downlink signal that has been filtered by a higher layer from the transmit power value of the downlink signal.

[0212] As an embodiment, the target path loss value includes the path loss obtained for the downlink signal and the first path loss offset, which means that the target path loss value is equal to the sum of the path loss obtained for the downlink signal and the first path loss offset.

[0213] As an embodiment, the target path loss value includes the path loss obtained for the downlink signal and the first path loss offset, which means that the target path loss value is equal to the difference between the path loss obtained for the downlink signal and the first path loss offset.

[0214] As an embodiment, the target path loss value includes the path loss obtained for the downlink signal and the first path loss offset, which means that the target path loss value is equal to the product of the path loss obtained for the downlink signal and the first path loss offset.

[0215] Typically, the bits occupied by the first field included in the first signaling are reserved bits.

[0216] As an embodiment, the reserved bits are Reserved bits.

[0217] Typically, the first domain included in the first signaling includes only 1 bit, and the first domain indicates whether the first path loss offset is enabled; when the first path loss offset is enabled, the transmit power value of the first signal depends on the first path loss offset; when the first path loss offset is not enabled, the transmit power value of the first signal does not depend on the first path loss offset.

[0218] Typically, the first path loss offset is associated with a first TCI state, the first TCI state is associated with at least one SRS resource, and the first signal and the SRS resource are quasi co-located.

[0219] As an embodiment, the first TCI state is configured with the first path loss offset.

[0220] As an embodiment, the first TCI state is associated with an SRS resource set, and the SRS resource set includes the SRS resource.

[0221] As an embodiment, the first TCI state is associated with two SRS resources, and the first signal and one of the two SRS resources are quasi-co-located.

[0222] As a sub-embodiment of this embodiment, only one of the two SRS resources is associated with the first path loss offset.

[0223] As an embodiment, the first TCI state is an uplink TCI state.

[0224] As an embodiment, the first TCI state is a TCI-UL-State.

[0225] As an embodiment, the first TCI state is associated with two TAGs (Timing Advance Groups).

[0226] As an embodiment, the first TCI state is associated with two SRS resources, and the two SRS resources are associated with two TAGs respectively.

[0227] Example 6

[0228] Example 6 illustrates a schematic diagram of an embodiment according to an application scenario of the present application, as shown in Figure 6. In Figure 6, the base station can perform downlink transmission and uplink reception, and the U-TRP connected to the base station via a backhaul link can also perform uplink reception, which can improve uplink coverage at the cell edge and reduce terminal power consumption; and the second UL link for the base station and the first UL link for the UL-TRP correspond to different uplink timings.

[0229] As an embodiment, the first path loss offset value is configured, and the first path loss offset value is for the first UL link.

[0230] As a sub-embodiment of this embodiment, the first signal is a PRACH for the first UL link.

[0231] As an embodiment, the first path loss offset value is not configured; the first signal is a PRACH for the second UL link.

[0232] As an embodiment, the base station is the second node in the application.

[0233] As an embodiment, the base station and the UL-TRP constitute the second node in this application.

[0234] As an embodiment, the base station and the UL-TRP are connected via a backhaul link.

[0235] As an embodiment, the base station and the UL-TRP are connected via a wired connection.

[0236] As an embodiment, the transmission delay between the base station and the UL-TRP through the wire can be ignored.

[0237] Example 7

[0238] Embodiment 7 illustrates a structural block diagram of a processing device in a first node according to an embodiment of the present application, as shown in FIG10 . In FIG7 , a processing device 700 in a first node includes a first receiver 701 and a first transmitter 702 .

[0239] In embodiment 7, the first receiver 701 receives a first signaling, which initiates a random access process; and the first transmitter 702 sends a first signal.

[0240] In embodiment 7, the random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal depends on whether a first path loss offset value is configured.

[0241] As an embodiment, when the first path loss offset value is configured, the first signaling includes the domain indicating the transmit power value of the first signal; when the first path loss offset value is not configured, the first signaling does not include the domain indicating the transmit power value of the first signal.

[0242] As an embodiment, the first path loss offset value is configured, and the first signaling includes a first field, and the first field included in the first signaling indicates whether the transmit power value of the first signal depends on the first path loss offset.

[0243] As an embodiment, the first signal is associated with a downlink signal; the transmit power value of the first signal is equal to the smaller value between a first maximum power value and a first power value; when the first field included in the first signaling indicates that the transmit power value of the first signal depends on the first path loss offset, the first power value is equal to the sum of a target power value and a target path loss value, and the target path loss value includes the path loss obtained for the downlink signal and the first path loss offset; when the first field included in the first signaling indicates that the transmit power value of the first signal does not depend on the first path loss offset, the first power value is equal to the sum of the target power value and the target path loss value, and the target path loss value is equal to the path loss obtained for the downlink signal.

[0244] As an embodiment, the bits occupied by the first field included in the first signaling are reserved bits.

[0245] As an embodiment, the first domain included in the first signaling includes only 1 bit, and the first domain indicates whether the first path loss offset is enabled; when the first path loss offset is enabled, the transmit power value of the first signal depends on the first path loss offset; when the first path loss offset is not enabled, the transmit power value of the first signal does not depend on the first path loss offset.

[0246] As an embodiment, the first path loss offset is associated with a first TCI state, the first TCI state is associated with at least one SRS resource, and the first signal and the SRS resource are quasi-co-located.

[0247] As an embodiment, the first node is user equipment.

[0248] As an embodiment, the first node is a relay node device.

[0249] As an embodiment, the first receiver 701 includes at least one of {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller / processor 459, the memory 460, the data source 467} in Example 4.

[0250] As an embodiment, the first transmitter 702 includes at least one of {the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller / processor 459, the memory 460, the data source 467} in Example 4.

[0251] Example 8

[0252] Embodiment 8 illustrates a structural block diagram of a processing device in a second node according to an embodiment of the present application, as shown in FIG8 . In FIG8 , the processing device 800 in the second node includes a second transmitter 801 and a second receiver 802 .

[0253] In embodiment 8, the second transmitter 801 sends a first signaling, which initiates a random access process; and the second receiver 802 receives a first signal.

[0254] In embodiment 8, the random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal depends on whether a first path loss offset value is configured.

[0255] As an embodiment, when the first path loss offset value is configured, the first signaling includes the domain indicating the transmit power value of the first signal; when the first path loss offset value is not configured, the first signaling does not include the domain indicating the transmit power value of the first signal.

[0256] As an embodiment, the first path loss offset value is configured, and the first signaling includes a first field, and the first field included in the first signaling indicates whether the transmit power value of the first signal depends on the first path loss offset.

[0257] As an embodiment, the first signal is associated with a downlink signal; the transmit power value of the first signal is equal to the smaller value between a first maximum power value and a first power value; when the first field included in the first signaling indicates that the transmit power value of the first signal depends on the first path loss offset, the first power value is equal to the sum of a target power value and a target path loss value, and the target path loss value includes the path loss obtained for the downlink signal and the first path loss offset; when the first field included in the first signaling indicates that the transmit power value of the first signal does not depend on the first path loss offset, the first power value is equal to the sum of the target power value and the target path loss value, and the target path loss value is equal to the path loss obtained for the downlink signal.

[0258] As an embodiment, the bits occupied by the first field included in the first signaling are reserved bits.

[0259] As an embodiment, the first domain included in the first signaling includes only 1 bit, and the first domain indicates whether the first path loss offset is enabled; when the first path loss offset is enabled, the transmit power value of the first signal depends on the first path loss offset; when the first path loss offset is not enabled, the transmit power value of the first signal does not depend on the first path loss offset.

[0260] As an embodiment, the first path loss offset is associated with a first TCI state, the first TCI state is associated with at least one SRS resource, and the first signal and the SRS resource are quasi-co-located.

[0261] As an embodiment, the second node is a base station device.

[0262] As an embodiment, the second node is user equipment.

[0263] As an embodiment, the second node is a relay node device.

[0264] As an embodiment, the second transmitter 801 includes at least one of {the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller / processor 475, and the memory 476} in Embodiment 4.

[0265] As an embodiment, the second receiver 802 includes at least one of {the antenna 420, the receiver 418, the receiving processor 470, the multi-antenna receiving processor 472, the controller / processor 475, and the memory 476} in Embodiment 4.

[0266] Those skilled in the art will appreciate that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software functional module. This application is not limited to any specific form of combination of software and hardware. The user equipment, terminal and UE in this application include but are not limited to drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment, transportation vehicles, vehicles, RSUs, wireless sensors, internet cards, Internet of Things terminals, RFID (Radio Frequency Identification) terminals, NB-IoT (Narrow Band Internet of Things) terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base stations or system equipment in this application include but are not limited to macrocell base stations, microcell base stations, small cell base stations, home base stations, relay base stations, eNB (evolved Node B), gNB, TRP, GNSS (Global Navigation Satellite System), relay satellites, satellite base stations, aerial base stations, RSUs, drones, test equipment, such as transceivers or signaling testers that simulate some functions of base stations, and other wireless communication equipment.

[0267] Those skilled in the art will appreciate that the present invention may be implemented in other specific forms without departing from its core or essential characteristics. Therefore, the presently disclosed embodiments should be considered in all respects as illustrative and not restrictive. The scope of the invention is determined by the appended claims, not the foregoing description, and all modifications that come within the meaning and range of equivalents are intended to be embraced therein.

Claims

1. A first node used for transmitting a reference signal for wireless communication, characterized in that: include: A first receiver receives a first signaling, wherein the first signaling initiates a random access process; A first transmitter sends a first signal; The random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal depends on whether a first path loss offset value is configured.

2. The first node according to claim 1, characterized in that; When the first path loss offset value is configured, the first signaling includes the field indicating the transmit power value of the first signal; when the first path loss offset value is not configured, the first signaling does not include the field indicating the transmit power value of the first signal.

3. The first node according to claim 2, characterized in that; The first path loss offset value is configured, the first signaling includes a first field, and the first field included in the first signaling indicates whether the transmit power value of the first signal depends on the first path loss offset.

4. The first node according to claim 3, characterized in that; The first signal is associated with a downlink signal; the transmit power value of the first signal is equal to the smaller value of a first maximum power value and a first power value; when the first field included in the first signaling indicates that the transmit power value of the first signal depends on the first path loss offset, the first power value is equal to the sum of a target power value and a target path loss value, and the target path loss value includes the path loss obtained for the downlink signal and the first path loss offset; when the first field included in the first signaling indicates that the transmit power value of the first signal does not depend on the first path loss offset, the first power value is equal to the sum of the target power value and the target path loss value, and the target path loss value is equal to the path loss obtained for the downlink signal.

5. The first node according to claim 3 or 4, characterized in that: The bits occupied by the first field included in the first signaling are reserved bits.

6. The first node according to any one of claims 3 to 5, characterized in that: The first field included in the first signaling includes only 1 bit, and the first field indicates whether the first path loss offset is enabled; when the first path loss offset is enabled, the transmit power value of the first signal depends on the first path loss offset; When the first path loss offset is not enabled, the transmit power value of the first signal does not depend on the first path loss offset.

7. The first node according to any one of claims 1 to 6, characterized in that: The first path loss offset is associated with a first TCI state, the first TCI state is associated with at least one SRS resource, and the first signal and the SRS resource are quasi co-located.

8. A second node used for transmitting a wireless communication reference signal, characterized in that: include: A second transmitter sends a first signaling, where the first signaling initiates a random access process; a second receiver, receiving the first signal; The random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal depends on whether a first path loss offset value is configured.

9. A method in a first node for transmitting a reference signal for wireless communication, characterized in that: include: receiving a first signaling, where the first signaling initiates a random access procedure; sending a first signal; The random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal depends on whether a first path loss offset value is configured.

10. A method in a second node used for transmitting a wireless communication reference signal, characterized in that: include: Sending a first signaling, where the first signaling initiates a random access procedure; receiving a first signal; The random access process initiated by the first signaling includes the first signal; whether the first signaling includes a domain indicating a transmit power value of the first signal depends on whether a first path loss offset value is configured.

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